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    Wyświetlanie 1-70 z 70
    Tytuł:
    Formal Theory and Value Judgments
    Autorzy:
    Kamiński, Marek
    Lissowski, Grzegorz
    Świstak, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/1930068.pdf
    Data publikacji:
    2014-01-07
    Wydawca:
    Polskie Towarzystwo Socjologiczne
    Tematy:
    formal theory
    experiments
    value judgments
    rationality
    Opis:
    When we assume that a survey reveals respondents’ true attitudes we tacitly assume that the subjects understood what we are asking them about and that they had no incentive to be untruthful. In typical studies none of the two assumptions holds. Subjects are asked questions that use undefined terms and they are asked about issues they have no incentive to answer truthfully. Here we argue that a way to solve the two problems lies in constructing a formal theory of an attitude in such a way that an attitude can be derived from the answers yet when answering the questions subjects cannot possibly know that their responses reveal anything about their attitude and, hence, they have no incentive to answer insincerely.We briefly discuss a study that has the desirable properties necessary for the proper design.
    Źródło:
    Polish Sociological Review; 2014, 184, 4; 409-430
    1231-1413
    2657-4276
    Pojawia się w:
    Polish Sociological Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Perioperative analgesia in laryngological cases
    Autorzy:
    Kącka, Agata
    Piotrowski, Mariusz
    Kozakowski, Marek
    Niewiński, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/1401524.pdf
    Data publikacji:
    2016
    Wydawca:
    Index Copernicus International
    Tematy:
    postoperative pain management
    laryngological surgery
    Opis:
    In clinical practice, pain management following various surgical interventions is far from perfect. Despite advances in pharmacology, suffering of patients after surgery is still commonplace. A change in simple rules for managing postoperative pain, as well as introduction of standards for therapy would let change status quo. Introduction of multidrug therapy brings hope to improve patients’ comfort and efficacy of treatment.
    Źródło:
    Polski Przegląd Otorynolaryngologiczny; 2016, 5, 4; 6-9
    2084-5308
    2300-7338
    Pojawia się w:
    Polski Przegląd Otorynolaryngologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Neuroma (schwannoma). A rare pancreatic tumor
    Autorzy:
    Witkowski, Grzegorz
    Kołos, Małgorzata
    Nasierowska-Guttmejer, Anna
    Durlik, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/1391855.pdf
    Data publikacji:
    2020
    Wydawca:
    Index Copernicus International
    Tematy:
    pancreas
    pancreatoduodenectomy
    schwannoma
    tumor of pancreas
    Opis:
    Introduction: Neuroma (Schwannoma in Latin) is an encapsulated, mesenchymal tumor arising from Schwann cells surrounded by nerves. Hence it can be located in any area in the body with passing peripheral nerves. The most common location is the head, neck, and extremities. The tumor arising from Schwannoma cells was first described by Stout and Carson in 1935. Pancreatic schwannomas are extremely rare tumors. Until 2017, in English literature 68 cases have been described. Surgical treatment is the most common way of treating pancreatic schwannomas, and postoperative prognoses are good. Case report: A 63-year-old patient was admitted to the Clinical Department of Gastroenterological Surgery and Transplantation of the Central Clinical Hospital at the Ministry of Interior and Administration in Warsaw due to pancreatic head cancer. Needle biopsy–both ultrasound-guided and CT-guided as well as open biopsy for lesions in the pancreas did not show tumor cells in any of the collected samples. Abdominal CT in a projection of the uncinate process of the pancreas revealed an oval lesion highly suspected of neoplastic process. Next, diagnostics was extended by abdominal MRI which revealed a retroperitoneal tumorous thick-walled cystic mass filled with fluid. The patient was qualified for surgical treatment. Pancreaticoduodenectomy (Whipple Procedure) was done on August 22, 2017. Material sent for histopathological examination revealed Schwannoma capitis pancreatis. In surgical practice, pancreatic schwannoma occurs extremely rare, but in centers which conduct large numbers of surgical procedures in the pancreas, a case like this may occur.
    Źródło:
    Polish Journal of Surgery; 2020, 92, 1; 48-51
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The use of managerial dashboards in manufacturing companies
    Autorzy:
    Dzieża, Grzegorz
    Sikora, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/27313620.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    dashboard
    data visualization
    business intelligence
    BI
    kokpit menedżerski
    wizualizacja danych
    Opis:
    Purpose: The aim of the publication is to diagnose the level and to assess the possibility of using managerial dashboards created in an Excel spreadsheet to supervise management processes in enterprises. Design/methodology/approach: The research developed the method of a directed interview with the staff at various management levels. The supervision of technological processes, economic analysis, and the provision of broadly understood services for citizens have been the subject of the research. Findings: Managers show little interest in improving their employees' analytical skills. Training in this area is not planned and the impact of analytical capabilities of the tools available for the functioning of the company are not appreciated. Research limitations/implications: The results of the research are not representative, but they encourage the authors to carry out a broader and more in-depth analysis of the existing situation in enterprises. Practical implications: The research shows the need to rationalize human resources management. This process requires an increased supervision over employee development planning with the use of the appropriate training. This may have a significant impact on efficient management and, consequently, on the company's financial results. Originality/value: The article is to be an element stimulating the management to more thoughtful activities in the field of selection, training, and use of personnel at various levels of management in the company.
    Źródło:
    Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska; 2022, 156; 157--168
    1641-3466
    Pojawia się w:
    Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of farmers’ first aid knowledge in most common injuries at work in agriculture – a pilot study
    Autorzy:
    Kucaba, Grzegorz
    Bebło, Katarzyna
    Wojtaszek, Marek
    Filip, Dawid
    Muster, Marek
    Naróg, Maciej
    Włodyka, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/454989.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
    Tematy:
    injuries at work in agriculture
    trauma
    first aid
    Opis:
    Introduction. According to the International Labour Organisation (ILO), agriculture is one of the most dangerous industries. The rate of fatal accidents in agriculture is about twice the average for other sectors. Aim. The aim of this study was to evaluate the level of knowledge of first aid concerning the most common injuries that occur in agricultural work. The analysis of the types of injuries during work in agriculture and their incidence among Polish farmers in the years 2013–2014 made it possible to define the most common types of injuries and their causes for the selected professional group and to draw up a survey for the farmers in order to achieve the main research goal. Material and methods. The study was conducted in two stages. At first, data from KRUS – Kasa Rolniczego Ubezpieczenia Społecznego (the Polish Agricultural Social Insurance Fund) was analyzed with reference to the incidence and the type of injuries that occurred in agriculture in 2013 and 2014. Then research was carried out by means of a survey based on the data obtained in the first stage. The study was preliminary and it was carried out on a sample of 51 persons. Results. The most common cause of the 41,702 incidents qualified by the Agricultural Social Insurance Fund as an accident in agriculture in Poland in the years 2013 and 2014 was a fall from heights. Every fourth respondent had witnessed or had been directly involved in an accident in agriculture. Despite the fact that everyone declared familiarity with the principles of first aid, over a half of the respondents had never given it. Conclusion. All of the respondents declared having knowledge of the principles of first aid, however, research shows that their knowledge is incomplete and not consolidated. Due to the fact that there are few reports on the research topic, it seems advisable to continue it in a larger study group. With reference to pesticide use, despite having knowledge of the hazard of intoxication by organophosphate compounds, a majority of farmers included in the study did not use any personal protective equipment.
    Źródło:
    European Journal of Clinical and Experimental Medicine; 2017, 1; 2-17
    2544-2406
    2544-1361
    Pojawia się w:
    European Journal of Clinical and Experimental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polish interdisciplinary consensus on diagnostics and treatment of colonic diverticulosis (2015)
    Autorzy:
    Pietrzak, Anna
    Bartnik, Witold
    Szczepkowski, Marek
    Krokowicz, Piotr
    Dziki, Adam
    Reguła, Jarosław
    Wallner, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/1395601.pdf
    Data publikacji:
    2015-04-01
    Wydawca:
    Index Copernicus International
    Źródło:
    Polish Journal of Surgery; 2015, 87, 4; 203-220
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Strength testing of a modular trailer with a sandwich platform
    Autorzy:
    Mysior, Marek
    Pietrucha, Grzegorz
    Koziołek, Sebastian
    Powiązania:
    https://bibliotekanauki.pl/articles/2087017.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
    Tematy:
    fatigue life
    light trailer
    road testing
    sandwich panel
    honeycomb
    Opis:
    The article presents the experimental strength evaluation of modular car trailers with a maximum permissible total mass of up to 3500 kg and its application to assess the mechanical strength of box-type car trailers. Tests were carried out using an original test bench dedicated to fatigue testing. They aimed to compare a trailer made in traditional technology with a trailer equipped with a load-carrying structure containing a sandwich panel. As a result of the conducted work, the displacement values of the measurement points were measured. The deformation form of the trailer made in the traditional technology was compared with the trailer containing the sandwich panel. The proposed method of experimental strength evaluation of modular car trailers enables a quantitative assessment of the mechanical strength of the load-carrying structures of trailers. This results in improved safety of trailer operation in road traffic by identifying the critical elements of the load-carrying structure at the early design phase before the trailer is allowed to run on the road.
    Źródło:
    Eksploatacja i Niezawodność; 2022, 24, 2; 163--169
    1507-2711
    Pojawia się w:
    Eksploatacja i Niezawodność
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Materials to the knowledge of beetles (Coleoptera) of aquatic habitats in the Suwalski Landscape Park
    Autorzy:
    Buczyński, Paweł
    Przewoźny, Marek
    Pakulnicka, Joanna
    Buczyńska, Edyta
    Dawidowicz, Łukasz
    Wagner, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/763843.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
    Opis:
    The authors discuss the material collected in the Suwalski Landscape Park in the years 2009 and 2011-2013, almost exclusively obtained from standing waters. At 29 study sites, 1 204 individuals representing 109 species from 12 families were caught, of which 55 species have been recorded for the first time in the examined area. The most valuable were: Gyrinus distinctus, Haliplus fulvicollis, H. variegatus, Ilybius erichsoni, Graphoderus austriacus, Hydroporus glabriusculus, H. incognitus, Hydrochus ignicollis, H. megaphallus, Spercheus emarginatus, Anacaena globulus, Berosus frontifoveatus, Enochrus melanocephalus, Hydrophilus aterrimus, Cercyon quisquilius, C. unipunctatus, Limnebius aluta, Dryops anglicanus, Heterocerus fenestratus and Cyphon pubescens. The most species were found in small water bodies and lakes. The collected material was ecologically diversified; dominating groups were eurytopes as well as tyrphobionts and tyrphophiles, rheophilous species were also numerous. Taking into consideration data discussed in this paper and literature as well as the lack of complex studies, in waters of the Suwalski Landscape Park 139 beetle species have been recorded so far, of which 136 species represent true aquatic beetles (the authors provide the list of them). This number is similar or even higher than the one recorded in well studied, the most valuable and diversified habitats in protected areas of Poland. The Suwalski Landscape Park is also the place of occurrence of many species under protection, from the Red List of Animals in Poland or regarded as rarely occurring in Poland. It is also a refuge of many seriously threatened species in neighbouring countries. This confirms a great, overregional role of this area in the protection of aquatic beetles and their habitats.
    Źródło:
    Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia; 2014, 69, 1
    2083-3563
    0066-2232
    Pojawia się w:
    Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Patient Reoperations for Late Complications of Surgical Treatment of Parastomal Hernias – Own Experience
    Autorzy:
    Szczepkowski, Marek
    Gil, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/1396854.pdf
    Data publikacji:
    2012-12-01
    Wydawca:
    Index Copernicus International
    Tematy:
    intestinal stoma
    late complications of intestinal stoma
    perastomal hernia
    reoperations
    Opis:
    Parastomal hernias continue to be a significant clinical problem. Use of a synthetic material results in the best results of treatment of this pathology. However, treatment results are still unsatisfactory. The aim of the study is to present 6 cases of late complications of treatment of parastomal hernia using synthetic material, with successful surgical treatment. Material and methods. Among 52 surgical procedures of parastomal hernia repair using a synthetic material, 6 patients underwent late reoperation, including 4 women. Six reoperations were performed due to complications of parastomal hernia repair. Results. All cases of reoperation are presented and discussed in the study in order in which parastomal hernia repair procedures were performed. Conclusions. Presentation of 6 cases of patients treated for complications of the parastomal hernia repair procedure indicates that surgical technique of repair of this pathology is far from being perfect, although there has been a significant progress in this area over the past 20 years.
    Źródło:
    Polish Journal of Surgery; 2012, 84, 10; 495-501
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Insight Into Vibration Sources in Turbines
    Autorzy:
    Moneta, Grzegorz
    Jachimowicz, Jerzy
    Pietrzakowski, Marek
    Doligalski, Adam
    Szwedowicz, Jarosław
    Powiązania:
    https://bibliotekanauki.pl/articles/2105187.pdf
    Data publikacji:
    2021
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
    Tematy:
    vibrations
    blade
    gas turbine
    turbine engine
    strain gauge
    tip timing
    Additive Manufacturing
    Opis:
    Despite of nearly 100 years of turbine engine development and design, blade vibrations remain a great engineering challenge. The rotating turbine blades’ vibrations lead to cyclic oscillations, which result in alternating stress and strain in harsh environments of high temperature and pressure. In modern aeroengines, high hot flow velocities might generate erosion and corrosion pitting on the metal surfaces, that leverage remarkably mean stresses. The combination of both mean and alternating stresses can lead to unexpected engine failures, especially under resonance conditions. Then, alternating stress amplitudes can exceed the safety endurance limit, what accelerates the high cyclic fatigue leading quickly to catastrophic failure of the blade. Concerning the existing state-of-the-art and new market demands, this paper revises forced vibrations with respect to excitation mechanisms related to three design levels: (i) a component like the blade design, (ii) turbine stage design consisting of vanes and blades and (iii) a system design of a combustor and turbine. This work reviews the best practices for preventing the crotating turbine and compressor blades from High Cyclic Fatigue in the design process. Finally, an engine commissioning is briefly weighed up all the pros and cons to the experimental validations and needed measuring equipment.
    Źródło:
    Fatigue of Aircraft Structures; 2021, 13; 40--53
    2081-7738
    2300-7591
    Pojawia się w:
    Fatigue of Aircraft Structures
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polskie państwo podziemne
    Autorzy:
    Salmonowicz, Stanisław.
    Ney-Krwawicz Marek.
    Górski, Grzegorz.
    Współwytwórcy:
    Ślaski, Jerzy. Przedmowa
    Pawlak, Nicodemus. Tłumaczenie
    Data publikacji:
    1999
    Wydawca:
    Warszawa : Światowy Związek Żołnierzy Armii Krajowej : "Rytm"
    Tematy:
    Armia Krajowa (AK)
    Polskie Państwo Podziemne (1939-1945)
    Underground state
    Underground movement
    Opis:
    Bibliogr. s. 105-[106].
    Dostawca treści:
    Bibliografia CBW
    Książka
    Tytuł:
    Palaeoenvironment of the middle Miocene wetlands at Drzewce, Konin region, central Poland
    Autorzy:
    Worobiec, Elżbieta
    Widera, Marek
    Worobiec, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/2134834.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    lignite
    palynology
    non-pollen palynomorphs
    palaeovegetation
    palaeoclimate
    fossil fungi
    Neogene
    Opis:
    Palynological analysis of the 1st mid-Polish lignite seam (MPLS-1) of the Drzewce deposit (Konin region, central Poland) was used as the data source for palaeoenvironmental and palaeoclimatic interpretations. Lignites of the 1st group developed in the middle Miocene, during and shortly after the last peak of the Mid-Miocene Climatic Optimum, over a large area of Poland, and they are the youngest of the main Neogene lignite seams in Poland. In the Konin region, these lignites have a relatively significant thickness (up to 20 m) and therefore they are (or were in the past) exploited in several open-pit mines. A total of 36 palynological samples from the 6.3-m-thick seam of the Drzewce opencast mine was studied in detail. Palynological analysis of the lignite seam indicates that the area was overgrown by palustrine wetland communities, similar in composition to modern pocosins. The most characteristic elements of them were shrubs in the Ericaceae family. The climate at that time was warm temperate and humid. The estimated mean annual temperature (MAT) for the lignite seam at Drzewce is 15.7–17.8 °C. Comparison with other palynofloras from the MPLS-1 shows that the climate during the formation of the group of seams was more or less homogenous across the entire Polish Lowlands. Sedimentological data and results of palynological studies (including NPPs) at Drzewce indicate that the palaeomires were relatively distant from the channels of the river system in the Konin Basin. The fossil fungal assemblage indicates dense vegetation on damp, swampy soils and the presence of small, shallow-water bodies, with a variable water level or even periodic reservoirs, existing only during the wet season or after floods. In small, flooded depressions, such as the pools in bogs, filamentous green algae occurred. The presence of zygospores of the desmids Desmidiaceaesporites cosmarioformis most probably indicates relatively nutrient-poor (ombrotrophic) conditions. Fluctuations in the frequency of individual plant taxa (including Sequoia and Sciadopitys) are likely to reflect changes in water level and trophic conditions.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2022, 92, 2; 201--218
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Neural activity and new methods of computational analysis in the model of mammalian brain cortex
    Autorzy:
    M. Wójcik, Grzegorz
    Falski, Marek
    Ruthe, Jan
    Żukowski, Michał
    Stanisławek, Dorota
    A. Kamiński, Wiesław
    Powiązania:
    https://bibliotekanauki.pl/articles/764355.pdf
    Data publikacji:
    2007
    Wydawca:
    Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
    Źródło:
    Annales Universitatis Mariae Curie-Skłodowska. Sectio AI, Informatica; 2007, 6, 1
    1732-1360
    2083-3628
    Pojawia się w:
    Annales Universitatis Mariae Curie-Skłodowska. Sectio AI, Informatica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Selected factors of fibrinolysis in the Buerger’s disease
    Autorzy:
    Terlecki, Piotr
    Feldo, Marcin
    Przywara, Stanisław
    Iłżecki, Marek
    Kęsik, Jan J.
    Borowski, Grzegorz
    Wroński, Jacek
    Zubilewicz, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/1396478.pdf
    Data publikacji:
    2013-11-01
    Wydawca:
    Index Copernicus International
    Tematy:
    Buerger’s disease
    fibrinolysis
    Opis:
    Thrombangiitis obliterans (TAO marked by coexistence of thrombotic and inflammatory changes of neurovascular tract has evoked a considerable dispute concerning pathogenesis of this disease. The aim of the study was to define the level of activation of fibirinolitic system in course of TAO disease by means of determination its basic constituents as well as to examine the essence of level of fibrinolysis disorders in pathogenesis and development of this disease. Material and methods. Fifty patients with thrombangiitis obliterans (TAO), 30 patients with peripheral occlusive disease - PAOD (ASO) and 20 healthy volunteers (K) have been subjected to the examination. We determined the activity some factors of fibrinolysis: t-PA, PAI-1, PAP, plasminogen, α2-antiplasminogen, D-dimmer as well as euglobulin lysis time. The analysis comprised 7 features and 8 factors of variability: a membership to a group of patients, sex, age, smoking, aggravation of the disease within last 3 months, occurrence of Raynaud’s symptom, a degree of ischemia according to Fontaine, time the disease lasted. Results. The significant differences between the average were checked by means of t-Student test or variance analysis (ANOVA) and co-relation rate r (Pearson). We concluded that the average value of PAI-1 in the group TAO was significantly higher than in comparison with ASO group. The increased values were revealed in case of 76 % of patients. The euglobulin lysis time was vitally extended in case of 60% of patients in ASO group. In all three groups higher levels of α2-antiplasmin were detected in case of elderly patients compared to the younger ones. Conclusions. The obtained results allow us to ascertain the state of potentially weakened fibrinolysis in case of patients with Buerger’s disease as well as with PAOD.
    Źródło:
    Polish Journal of Surgery; 2013, 85, 11; 630-637
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Post-“Little Ice Age” retreat rates of glaciers around Billefjorden in central Spitsbergen, Svalbard
    Autorzy:
    Rachlewicz, Grzegorz
    Szczuciński, Witold
    Ewertowski, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/2051843.pdf
    Data publikacji:
    2007
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Arctic
    Svalbard
    deglaciation
    retreat rate
    glacial geomorphology
    “Little Ice Age”
    Źródło:
    Polish Polar Research; 2007, 3; 159-186
    0138-0338
    2081-8262
    Pojawia się w:
    Polish Polar Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polish Consensus on Treatment of Gastric Cancer; Update 2013
    Autorzy:
    Kulig, Jan
    Wallner, Grzegorz
    Drews, Michał
    Frączek, Mariusz
    Jeziorski, Arkadiusz
    Kielan, Wojciech
    Kołodziejczyk, Piotr
    Nasierowska-Guttmejer, Anna
    Starzyńska, Teresa
    Zinkiewicz, Krzysztof
    Krawczyk, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/1396381.pdf
    Data publikacji:
    2013-09-01
    Wydawca:
    Index Copernicus International
    Źródło:
    Polish Journal of Surgery; 2013, 85, 9; 544-562
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of an abdominal drawing-in manoeuvre on stabilometric and gait parameters in adults: a pilot study
    Autorzy:
    Linek, Paweł
    Nowakowska, Katarzyna
    Michnik, Robert
    Myśliwiec, Andrzej
    Mikołajowski, Grzegorz
    Gzik, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/454836.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
    Tematy:
    gait
    stabilometric parameters
    Opis:
    Introduction. To our knowledge, no studies have checked the effect of the abdominal drawing-in maneuver (ADIM) on gait and stabilometric parameters in lower back pain (LBP) and pain-free subjects Aim. To assess the effect of sustained ADIM on a) gait pattern and b) stabilometric parameters with opened eyes and closed eyes in an adult population. Material and Methods. A group of 20 adults were invited to participate in the study. The Oswestry Disability Index was used for assessing LBP. Gait analysis was performed on a treadmill ZEBRIS FDM-T. The static balance assessment was performed on a stabilometric platform ZEBRIS FDM-S. Results. There were no significant differences in all tests conducted on the stabilometric platform. Results of gait analysis showed between-group differences in the main effect of group (Non-LBP vs. LBP) for the difference in maximal vertical ground reaction force during the terminal stance (GRFts). The mean GRFts value in the Non-LBP group was greater by 14.8 N (95% CI 9.55–20.1) compared with the LBP group (Table 3). Conclusions. ADIM has no immediate effects on selected stabilometric and gait parameters in the study group. No effect was seen in subjects with and without pain during the examination.
    Źródło:
    European Journal of Clinical and Experimental Medicine; 2017, 3; 257-262
    2544-2406
    2544-1361
    Pojawia się w:
    European Journal of Clinical and Experimental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polish Consensus Statement On The Protective Stoma
    Autorzy:
    Szczepkowski, Marek
    Banasiewicz, Tomasz
    Krokowicz, Piotr
    Dziki, Adam
    Wallner, Grzegorz
    Drews, Michał
    Herman, Roman
    Lorenc, Zbigniew
    Richter, Piotr
    Bielecki, Krzysztof
    Tarnowski, Wiesław
    Kruszewski, Jan
    Kładny, Józef
    Głuszek, Stanisław
    Zegarski, Wojciech
    Kielan, Wojciech
    Paśnik, Krzysztof
    Jackowski, Marek
    Wyleżoł, Mariusz
    Stojcev, Zoran
    Przywózka, Alicja
    Powiązania:
    https://bibliotekanauki.pl/articles/1395793.pdf
    Data publikacji:
    2014-08-01
    Wydawca:
    Index Copernicus International
    Źródło:
    Polish Journal of Surgery; 2014, 86, 8; 391-404
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investment Activity of Local Administrative Units and the Level of Entrepreneurship Development in the Rzeszów Functional Area
    Autorzy:
    Ślusarz, Grzegorz
    Cierpiał-Wolan, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/1357031.pdf
    Data publikacji:
    2019-05-07
    Wydawca:
    Uniwersytet Warszawski. Wydział Nauk Ekonomicznych
    Tematy:
    unctional areas
    synthetic measures
    integrated territorial investments
    typology of investment behaviour
    Opis:
    The article presents preliminary results of research on the effectiveness of cohesion policy in relation to functional areas that benefit from integrated territorial investments. Assuming that all local government units in their strategies assume economic development based on the development of entrepreneurship, an attempt was made to assess the impact of investments on their development. At this stage of the research, the investments of local governments in terms of value were taken into account without considering their types and structure as well as sources of financing. Initially, the purpose was to examine whether the scale of these investments translates into the economic sphere: into the development of entrepreneurship. To assess the differences in the level of entrepreneurship in 2012 and 2016, the analysis of quantitative changes in business entities, the dynamics of their number and the synthetic indicators were used. The basis for the calculation of synthetic indicators were the methods of taxonomic analysis, that is, a simple aggregate measure, the Hellwig taxonomic development pattern method and the positional method using the Weber median. The Theil standardised index was used to examine the level and structure of spatial inequalities of gmina investment expenditures and enterprises’ investments. The research indicated the specificity of the Rzeszów Functional Area (ROF) both in comparison with the voivodeship and similar functional areas in eastern Poland. However, these are still insufficient means to increase the cohesion of the entire area and fully activate its endogenous potential.
    Źródło:
    Central European Economic Journal; 2018, 5, 52; 40 - 55
    2543-6821
    Pojawia się w:
    Central European Economic Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of aerodynamic parameters of solar plane airfoil using CFD modeling
    Autorzy:
    Jaszczur, Marek
    Papis, Karolina
    Książek, Michał
    Czerwiński, Grzegorz
    Wojtas, Gabriel
    Koncewicz, Wojciech
    Nabożna, Sylwia
    Wójcik, Marcin
    Powiązania:
    https://bibliotekanauki.pl/articles/2097896.pdf
    Data publikacji:
    2021
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    solar plane
    aerodynamic parameters
    CFD modeling
    Opis:
    The technology of solar-powered aerial vehicles requires enormous financial support and further development. For this purpose, the computational fluid dynamic can be used. In order to carry out necessary analyses and model development in this research, ANSYS Fluent software was used. Using the first version of the AGH Solar Plane model, preliminary analysis of lift, drag and tearing off the stream was performed. Four new geometries were prepared on which the flattening of upper surfaces for fixing solar panels was tested. The results were validated in the aerodynamic tunnel using particle image velocimetry method. Taking into account all analyses, a number of recommendations have been prepared that will be implemented to create an aircraft, which meets all target requirements.
    Źródło:
    Computer Science; 2021, 22 (1); 123-142
    1508-2806
    2300-7036
    Pojawia się w:
    Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polish guidelines for treatment of patients with parastomal hernia
    Autorzy:
    Śmietański, Maciej
    Bury, Kamil
    Matyja, Andrzej
    Dziki, Adam
    Wallner, Grzegorz
    Studniarek, Michał
    Fridiger, Jerzy
    Szczepkowski, Marek
    Świerblewski, Maciej
    Wróblewski, Tadeusz
    Tarnowski, Wiesław
    Solecki, Rafał
    Mitura, Kryspin
    Powiązania:
    https://bibliotekanauki.pl/articles/1396115.pdf
    Data publikacji:
    2013-03-01
    Wydawca:
    Index Copernicus International
    Źródło:
    Polish Journal of Surgery; 2013, 85, 3; 152-180
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determination of biodiversity of Coprinus comatus using genotyping and metabolic profiling tools
    Autorzy:
    Pawlik, Anna
    Malinowska, Anna
    Siwulski, Marek
    Frąc, Magdalena
    Rogalski, Jerzy
    Janusz, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/1038885.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    AFLP
    ITS
    Biolog
    fungal diversity
    Coprinus comatus
    shaggy mane mushroom
    Opis:
    Coprinus comatus strains (CCMs) originating from Poland were identified using ITS region sequencing. Based on the sequences obtained, the genetic relationship between the CCM strains was determined and a clear separation of all strains into two main clusters was obtained. The Coprinus strains were also genetically characterized for the first time by the AFLP technique. The analysis showed that the CCMs separated into four main clusters and a high complication of a UPGMA-based dendrogram was achieved. C. comatus strains included in the analysis displayed an AFLP profile similarity level in the range from 44 to 66%. The highest similarity coefficient, 0.490, was found between CCM12 and CCM13, and the lowest (0.202) between the CCM2 and CCM5 isolates. Biolog FF MicroPlates were applied to obtain data on utilization of 95 carbon sources and mycelial growth. The analysis allowed comparison of the functional diversity of the CCM strains and revealed a broad variability within the analyzed Coprinus species based on substrate utilization profiles. Significant differences (2-48) have been shown in the substrate richness values. The Biolog experiments proved to be a good profiling technology for studying the diversity in shaggy manes due to metabolic differences and demonstrated that all the strains might be considered individually. It is evident that the strain metabolic grouping does not correlate with the grouping based on the ITS sequences and AFLP profiles, however, some similarities may be observed.
    Źródło:
    Acta Biochimica Polonica; 2015, 62, 4; 683-689
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Vibration impact on people transported by mining belt conveyors
    Autorzy:
    Góra, Grzegorz
    Iwaniec, Marek
    Kulinowski, Piotr
    Gac, Konrad
    Powiązania:
    https://bibliotekanauki.pl/articles/2146629.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Poznańska. Instytut Mechaniki Stosowanej
    Tematy:
    belt conveyor
    accelerations
    safety of transporting people
    comfort of transporting people
    przenośnik taśmowy
    przyspieszenia
    bezpieczeństwo podróżnych
    komfort podróżnych
    Opis:
    The paper presents the description and results of experimental research whose purpose was to analyze the vibration influence the miner's body during riding on a belt conveyor for transporting coal. The transport of people on mining belt conveyors is a commonly used method to increase mining efficiency and improve a mine's profitability. The paper presents an assessment of safety and comfort parameters used in transporting people, the effect of strong vibrations on the human body and its internal organs, the measuring system used to record the accelerations during the experiment and the measurement results. The recorded data enabled a dynamic analysis of the movement and an assessment of safety and comfort of transported miners on the basis of defined indicators. The data included the accelerations from the moment of getting on the conveyor belt to the moment of going down onto the platform. The tests were carried out for two different belt conveyor speeds, which allowed to assess how conveyor speed affects safety and comfort of people transported on the mining belt conveyor.
    Źródło:
    Vibrations in Physical Systems; 2020, 31, 1; art. no. 2020109
    0860-6897
    Pojawia się w:
    Vibrations in Physical Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Central Europe after 1918. A short outline
    Autorzy:
    Miszewski, Dariusz
    Dąbrowski, Franciszek
    Deszczyński, Marek
    Wnętrzak, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/576349.pdf
    Data publikacji:
    2018-06-20
    Wydawca:
    Akademia Sztuki Wojennej
    Tematy:
    Central Europe
    Russia and Central Europe
    integration and disintegration of
    Central European security
    Visegrad Group (V4)
    Eastern Partnership
    Three Seas Initiative
    Opis:
    This paper analyses changes in the region’s states, and the evolution of Central Europe’s (CE) position in the international environment. Since forming in 1918, the new CE independent states have remained a focus for neighbouring powers and Western powers. The paper looks at the background for the historical, political, economic, demographic, cultural and geopolitical importance of Central Europe. Three essential periods can be distinguished, the first being the post-WW1 period, when after the downfall of Austria-Hungary and the weakening of Germany, Russia and Turkey, a number of independent states emerged. The lack of Western assistance and insufficient mutual cooperation meant that CE countries became subject to aggression from Berlin and Moscow. After WW2, the region was forcefully reintegrated into the Soviet Union – and its states were subjected to political, social, economic and cultural degradation. The downfall of the Soviet Union and democratic transition in the states of Central Europe contributed to the regional economic and security integration. EU membership and close ties to the USA forged significant possibilities for development and becoming a subject of European policy. Historical experiences show that Central Europe has had a significant impact on international security in Europe. The region’s states of increasing significance have the capability potential to forge their own concepts of close regional political and economic cooperation.
    Źródło:
    Security and Defence Quarterly; 2018, 19, 2; 13-38
    2300-8741
    2544-994X
    Pojawia się w:
    Security and Defence Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polish Consensus on Treatment of Gastric Cancer; update 2017
    Autorzy:
    Kulig, Jan
    Wallner, Grzegorz
    Drews, Michał
    Frączek, Mariusz
    Jeziorski, Arkadiusz
    Kielan, Wojciech
    Kołodziejczyk, Piotr
    Nasierowska-Guttmejer, Anna
    Starzyńska, Teresa
    Zinkiewicz, Krzysztof
    Wojtukiewicz, Marek
    Skoczylas, W. Tomasz
    Richter, Piotr
    Krawczyk, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/1393313.pdf
    Data publikacji:
    2017
    Wydawca:
    Index Copernicus International
    Tematy:
    Gastric Cancer
    Helicobacter pylori
    Laparotomy
    Non-steroidal anti-inflammatory drugs
    Immunohistochemistry
    Surgical treatment
    Panendoscopy
    Biopsy
    Opis:
    The “Polish Research on Gastric Cancer” project has been continued since 1986. The main aim of this project, which is a multicenter and interdisciplinary research, is enhancing the treatment results of gastric cancer patients by developing and promoting the use of optimal methods for diagnosis and treatment, both surgical as well as combined. One of the more important achievements of the project is the development and publication of a document named “Polish Consensus on Treatment of Patients with Gastric Cancer”, whose first version was published in 1998. Following versions were updated adequately to changing trends in the proceedings in patients with gastric cancer. A scientific symposium on “Polish Consensus on Treatment of Gastric Cancer – update 2016” was held in 3-4 June 2016 in Cracow. During the symposium a panel session was held during which all authors publicly presented the Consensus assumptions to be discussed further. Moreover, the already mentioned session was preceded by a correspondence as well as a working meeting in order to consolidate the position. It has to be underlined that the directions and guidelines included in the Consensus are not the arbitrarily assumed rules of conduct in a legal aspect and as such every doctor/team of doctors is entitled to make different decisions as long as they are beneficial to a patient with gastric cancer. The Consensus discusses as follows: a) recommended qualifications (stage of advancement, pathological, lymph node topography and the extent of lymphadenectomy, division of cancer of the gastroesophageal junction), b) rules for diagnostics including recommendations regarding endoscopic examination and clinical evaluation of the advancement stage, c) recommendations regarding surgical treatment (extent of resection, extent of lymphadenectomy, tactics of proceedings in cancer of the gastroesophageal junction), d) recommendations regarding combined treatment with chemotherapy or radiotherapy, e) place of endoscopic and less invasive surgery in the treatment of gastric cancer. This publication is a summary of the arrangements made in the panel session during the abovementioned scientific symposium in Cracow in 2016.
    Źródło:
    Polish Journal of Surgery; 2017, 89, 5; 59-73
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Soil conditions under great cormorant and grey heron colonies in a wetland : Effect on soil nematode abundance and trophic structure
    Autorzy:
    Kozacki, Dawid
    Ilieva-Makulec, Krassimira
    Hryniewicz, Marek
    Makulec, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/27312635.pdf
    Data publikacji:
    2023
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    bird excreta
    great cormorant
    grey heron
    nematodes
    nitrogen
    Opis:
    This study aimed to investigate how great cormorants and grey herons affect the density and trophic diversity of soil nematodes under breeding colonies located in Stawy Raszyńskie Nature Reserve (central Poland). Soil samples from the colonies were compared to control samples from adjacent areas unaffected by birds. Samples were taken at each site (two colonies and two relevant control sites) to a depth of 20 cm, and the soil cores were split into topsoil (0-10 cm) and subsoil (10-20 cm). A modified Baermann method was used to extract nematodes from the soil. The soil under nests supported more abundant nematode communities, but with a lower trophic diversity compared to the control sites. The cormorants had a greater impact on nematodes than the herons. We found that the external nitrogen input, the higher organic matter content and abundance of ammonifying bacteria, as well as the lower soil pH under the colonies than in the control sites, affected the nematode trophic groups in different ways. Compared to the control sites, there were significantly more bacterivorous nematodes but fewer herbivorous nematodes under the colonies. No predatory nematodes were found under the bird colonies and, in the case of the cormorant colony, no omnivorous nematodes. No significant differences in the abundance of fungivorous nematodes between the impact and the control plots were noticed. The results indicate that allochthonous input under bird colonies promotes microbial activity and the most opportunistic trophic group of nematodes, which may at least temporarily enhance decomposition and mineralisation processes and consequently affect nutrient cycling in the wetland soil.
    Źródło:
    Journal of Water and Land Development; 2023, 58; 79--88
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Questionnaire survey of thermal sensations in the large lecture room
    Badania ankietowe wrażeń cieplnych w dużej sali wykładowej
    Autorzy:
    Majewski, Grzegorz
    Telejko, Marek
    Krawczyk, Natalia
    Dębska, Luiza
    Orman, Łukasz J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2055083.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Świętokrzyska w Kielcach. Wydawnictwo PŚw
    Tematy:
    microclimate
    thermal sensations
    questionnaire survey
    mikroklimat
    wrażenia cieplne
    badania ankietowe
    Opis:
    The article focuses on the subjective assessment of human thermal sensations expressed by them in the questionnaires. The tests were performed in the lecture room of Kielce University of Technology, where 69 students answered the questions about their thermal sensations. The results show that the majority of students felt satisfied and were not interested in changing the conditions. The impact of Body Mass Index revealed itself and was quite obvious.
    Artykuł koncentruje się na zagadnieniu subiektywnej oceny wrażeń cieplnych ludzi wyrażonych przez nich w kwestionariuszach. Badania prowadzono w dużej sali wykładowej Politechniki Świętokrzyskiej, gdzie 69 studentów odpowiadało na pytania dotyczące ich odczuć termicznych. Wyniki pomiarów pokazują, że większość studentów była usatysfakcjonowana i nie chcieli zmieniać warunków swojego otoczenia. W pracy wyraźnie uwidocznił się również wpływ indeksu BMI respondentów.
    Źródło:
    Structure and Environment; 2021, 13, 4; 113--117
    2081-1500
    Pojawia się w:
    Structure and Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The first evidence of a host-to-parasite mitochondrial gene transfer in Orobanchaceae
    Autorzy:
    Kwolek, Dagmara
    Denysenko-Bennett, Magdalena
    Góralski, Grzegorz
    Cygan, Magdalena
    Mizia, Patryk
    Piwowarczyk, Renata
    Szklarczyk, Marek
    Joachimiak, Andrzej J.
    Powiązania:
    https://bibliotekanauki.pl/articles/952048.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    orobanche
    hgt
    horizontal gene transfer
    atp6
    mitochondrion
    Opis:
    Several parasitic plants are known to have acquired mitochondrial genes via a horizontal transfer from their hosts. However, mitochondrial gene transfer in this direction has not yet been found in the parasite-rich family Orobanchaceae. Based on a phylogenetic analysis of the mitochondrial atp6 gene in selected species of Orobanche s.l., we provide evidence of a host-to-parasite transfer of this gene in O. coerulescens, which is a Eurasiatic species that parasitises Artemisia (Asteraceae). We did not find the original Orobanche atp6 gene in this species, which suggests that it has been replaced by a gene that was acquired from Asteraceae. In addition, our data suggest the occurrence of a second HGT event in the atp6 sequence – from Asteraceae to Phelipanche. Our results support the view that the transfer of genetic material from hosts to parasites influences the mitochondrial genome evolution in the latter.
    Źródło:
    Acta Biologica Cracoviensia. Series Botanica; 2017, 59, 1
    0001-5296
    Pojawia się w:
    Acta Biologica Cracoviensia. Series Botanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Paleogene-Neogene tectonic evolution of the lignite-rich Szamotuły Graben
    Autorzy:
    Widera, Marek
    Stawikowski, Wojciech
    Uścinowicz, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/138663.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Palaeozoic Platform
    Polish Basin
    salt diapirism
    synsedimentary tectonics
    lignite compaction
    platforma paleozoiczna
    basen polski
    diapiryzm solny
    wysad solny
    tektonika synsedymentacyjna
    zagęszczanie węgla brunatnego
    Opis:
    The Szamotuły Graben covers the southernmost part of the Permo-Mesozoic Poznań–Szamotuły Fault Zone. Along this regional discontinuity there are several salt structures, including the Szamotuły diapir, over which an extensional graben formed in the Paleogene and Neogene. The graben is located north of Poznań in central-western Poland, and is NW–SE-trending, ~20 km long, 3–5.5 km wide, and up to 160 m deep. It is filled with Lower Oligocene and Neogene sediments, including relatively thick lignite seams. Data from boreholes allow the assignment of the graben-fill sediments to appropriate lithostratigraphic units. Furthermore, analysis of changes in the thickness of these units provides evidence for periods of accelerated graben subsidence or uplift relative to its flanks. As a result, two distinct stages of tectonic subsidence and one inversion in the Paleogene–Neogene evolution of the Szamotuły Graben have been distinguished. Thus, relatively significant subsidence occurred in the Early Oligocene and the middle Early–earliest Mid-Miocene, while slight inversion took place in the middle part of the Mid-Miocene.
    Źródło:
    Acta Geologica Polonica; 2019, 69, 3; 387-401
    0001-5709
    Pojawia się w:
    Acta Geologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Archiwum polityczne Ignacego Jana Paderewskiego. T. 6, 1915-1941
    Współwytwórcy:
    Dąbrowski, Adam Grzegorz (1969- ). Opracowanie
    Drozdowski, Marian Marek (1932- ). Redakcja
    Data publikacji:
    2007
    Wydawca:
    Warszawa : Wydawnictwo DiG
    Tematy:
    Paderewski, Ignacy Jan (1860-1941)
    Haller, Józef (1873-1960)
    Archiwum Akt Nowych
    Polityka
    II wojna światowa (1939-1945)
    Źródła historyczne
    Opis:
    T. 1-5 pt.: Archiwum polityczne Ignacego Paderewskiego.
    Indeks.
    Dostawca treści:
    Bibliografia CBW
    Książka
    Tytuł:
    Selected aspects of the use of gaseous fuels blends to improve efficiency and emission of si engine
    Autorzy:
    Kubica, Grzegorz
    Flekiewicz, Marek
    Marzec, Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/375318.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    internal combustion
    gaseous fuel
    methane
    hydrogen
    LPG
    DME
    energy efficiency
    spalanie wewnętrzne
    paliwo gazowe
    metan
    wodór
    efektywność energetyczna
    Opis:
    The paper presents results of SI engine tests, carried on for different gaseous fuels. The analysis carried out made it possible to define the correlation between fuel composition and engine operating parameters. Tests cover various gaseous mixtures: methane with hydrogen and LPG with DME. The first group, considered as low carbon content fuels, can be characterized by low CO2 emissions. The flammability of hydrogen added in those mixtures realizes the function of combustion process activator and improves the energy conversion. The second group of fuels is constituted by LPG and DME mixtures. DME mixes perfectly with LPG and differently than in the case of other hydrocarbon fuels also consisting of oxygen, which makes the stoichiometric mixture less oxygen demanding. In the case of this fuel, improvement in engine volumetric and overall engine efficiency has been noticed, compared to LPG. During the tests, standard CNG/LPG feeding systems have been used, which underlines the utility value of the research.
    Źródło:
    Transport Problems; 2019, 14, 1; 95-103
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Anastomotic leaks in gastrointestinal surgery and their prevention
    Autorzy:
    Banasiewicz, Tomasz
    Dziki, Adam
    Lampe, Paweł
    Lorenc, Zbigniew
    Szczepkowski, Marek
    Zieliński, Jacek
    Wallner, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/1393190.pdf
    Data publikacji:
    2017
    Wydawca:
    Index Copernicus International
    Tematy:
    GI tract anastomosis
    anastomotic leak
    protective stoma
    fibrin glue
    perioperative nutrition
    collagen matrix coated with the fibrynogen and thrombin
    Opis:
    Anastomotic leak in the gastrointestinal tract is one of the most important complications of resection. They are the main cause of reoperation, their occurrence worsens the prognosis of the patient, increasing the proportion of direct mortality, as well as being a significant risk factor for recurrence of cancer. The risk of leaks within the gastrointestinal tract is greatly varied, depending on the location and extent of the resection, but also on patient, disease or a surgical procedure, including surgeon. To determine the potential risk of leakage can be significant for introduction some prophylactic actions. Some of them have the character of general recommendations, as proper nutrition of the patient in the perioperative period, while another part is directly connected to the surgical procedure. The second group includes protective stoma, the use of tissue glues, insertion transrectal drain for rectal anastomosis decompression, the use of stents or the use of collagen matrix coated with fibrinogen and thrombin. Important to reduce the proportion of leaks can be more precise and targeted prophylactic recommendations, based on the individualized determination of risk factors leaks. Further research for this purpose are necessary for this purpose, the big hope can be associated with data obtained through mobile applications.
    Źródło:
    Polish Journal of Surgery; 2017, 89, 2; 49-56
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An evaluation of organic matter dispersed in the Menilite Formation in Silesian Nappe (Polish Outer Carpathians): an optical microscopic approach
    Autorzy:
    Waliczek, Marta
    Machowski, Grzegorz
    Solecki, Marek Leszek
    Stefaniuk, Michał
    Powiązania:
    https://bibliotekanauki.pl/articles/2172903.pdf
    Data publikacji:
    2022
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    Outer Carpathians
    Menilite Formation
    organic matter
    huminite/vitrinite reflectance
    solid bitumen
    Opis:
    In this study, optical microscopic analyses were applied to evaluate the thermal maturity, characteristics of solid bitumen, and other organic matter finely dispersed in Oligocene shales of the Menilite Formation in the Iwonicz-Zdrój–Rudawka Rymanowska Fold (IRF) and Bóbrka–Rogi Fold (BRF) of the Central Carpathian Synclinorium of the Silesian Nappe, Outer Carpathians, Poland. The investigation was carried out at two-unit depths of the shallow and deeper D-1 sections (430 m – IRF and 4,300 m – BRF) and outcrop samples (BRF). The mean random huminite reflectance values indicate immature conditions with respect to hydrocarbon generation in samples from the D-1 shallow section (VRo ≈ 0.40%) and in the outcrop samples (VRo = 0.36%). The degree of thermal maturity of the organic matter from a depth of about 4,300 m – BRF based on random vitrinite (VRo ≈ 0.80%) and solid bitumen (BRo ≈ 0.65%) reflectance measurements is associated with the “oil window” for petroleum generation. The organic components dispersed in the examined Menilite Formation samples are typical for hydrocarbon-prone organic matter, suggesting the dominant kerogen type II. The potential precursor maceral for solid bitumen occurring in the examined samples from the deeper D-1 sections is largely the alginite maceral.
    Źródło:
    Geology, Geophysics and Environment; 2022, 48, 3; 243--256
    2299-8004
    2353-0790
    Pojawia się w:
    Geology, Geophysics and Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Middle Devonian Skały Formation in the Holy Cross Mountains (Poland) : formal description and subdivision based on new field data
    Autorzy:
    Racki, Grzegorz
    Wójcik, Krystian
    Halamski, Adam T.
    Narkiewicz, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/2182148.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    lithostratigraphy
    Skały Formation
    Dobruchna Member
    Middle Devonian
    Łysogóry Region
    Holy Cross Mts
    Opis:
    The well-known fossiliferous and lithologically variable clay-carbonate series in the Łysogóry Region (northern part of the Holy Cross Mts, central Poland), enclosed between the Middle Devonian Amphipora dolomites and limestones (Kowala Formation) and siliciclastics (Świętomarz Beds), is defined formally as the Shaly-Calcareous Skały Formation. This Upper Eifelian to Middle Givetian, ca. 250–280 m thick unit, consists of marly and clay shales, interbedded many times with various limestone types (including encrinite and biohermal varieties), as well as with marls and siltstones. Its diagnostic feature is the presence of variable skeletal accumulations, formed by exceptionally numerous, well-preserved and diverse macrofauna (including brachiopods, corals, crinoids, bryozoans), described since the 19th century. The stratotype is located in the eastern slope of the Dobruchna stream near the Skały village and belongs to the Silurian to Upper Devonian Grzegorzowice-Skały section. Compared to the previously used term, Skały Beds sensu Pajchlowa (1957), the lower boundary is redefined, owing to a new exposure in the active Skała Quarry, and placed higher, at the base of the famous brachiopod shales (set XIV of Pajchlowa), instead of the formerly accepted lower boundary at the base of set XIII. Set XIV is formally distinguished as the Dobruchna Brachiopod Shale Member. The higher part of the Skały Fm (sets XV–XXVA) is not subdivided further, as the poorly exposed succession, including in particular the type area, precludes a more accurate recognition of lithological variability. The upper boundary of the Skały Fm is placed at the top of set XXV sensu Pajchlowa (1957), corresponding to the boundary between subsets XXVA and XXVB sensu Malec and Turnau (1997). A hypostratotype of the upper boundary is selected in the outcrop M0 at Miłoszów, 2.5 km westwards from the type section, allowing recognition of the diachroneity of lithological change defining the transition from the Skały Fm to Świętomarz Beds. A borehole situated in a key location would be an obvious next step in the further elucidation of the stratigraphic sequence of the Łysogóry Region.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2022, 92, 4; 425--444
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Use of Virtual Reality to Facilitate Engineer Training in the Aerospace Industry
    Autorzy:
    Paszkiewicz, Andrzej
    Salach, Mateusz
    Wydrzyński, Dawid
    Woźniak, Joanna
    Budzik, Grzegorz
    Bolanowski, Marek
    Ganzha, Maria
    Paprzycki, Marcin
    Cierpicki, Norbert
    Powiązania:
    https://bibliotekanauki.pl/articles/27323143.pdf
    Data publikacji:
    2023
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Instytut Informatyki Technicznej
    Tematy:
    virtual reality
    industry 4.0
    CNC machines
    aviation industry
    quality management
    Opis:
    This work concerns automation of the training process, using modern information technologies, including virtual reality (VR). The starting point is an observation that automotive and aerospace industries require effective methods of preparation of engineering personnel. In this context, the technological process of preparing operations of a CNC numerical machine has been extracted. On this basis, a dedicated virtual reality environment, simulating manufacturing of a selected aircraft landing gear component, was created. For a comprehensive analysis of the pros and cons of the proposed approach, four forms of training, involving a physical CNC machine, a physical simulator, a software simulator, and the developed VR environment were instantiated. The features of each training form were analysed in terms of their potential for industrial applications. A survey, using the Net Promoter Score method, was also conducted among a target group of engineers, regarding the potential of use of each training form. As a result, the advantages and disadvantages of all four training forms were captured. They can be used as criteria for selecting the most effective training form.
    Źródło:
    Machine Graphics & Vision; 2023, 32, 2; 19--44
    1230-0535
    2720-250X
    Pojawia się w:
    Machine Graphics & Vision
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    TGF-β1, IL-10 and IL-4 in colostrum of allergic and nonallergic mothers
    Autorzy:
    Marek, Andrzej
    Zagierski, Maciej
    Liberek, Anna
    Aleksandrowicz, Ewa
    Korzon, Michał
    Krzykowski, Grzegorz
    Kamińska, Barbara
    Szlagatys-Sidorkiewicz, Agnieszka
    Powiązania:
    https://bibliotekanauki.pl/articles/1040529.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    IL-10
    allergy
    IL-4
    human milk
    TGF-β1
    Opis:
    Objective: To determine transforming growth factor (TGF) β1, interleukin (IL) 4, and IL-10 concentrations in human milk and to assess the relationship between allergic disorders in mothers and the content of the interleukins in their milk. Material and methods: Thirty allergic and 46 healthy mothers were included in the study. Colostrum was collected 2-3 days after delivery. Cytokine concentrations were determined with commercial enzyme-linked immunosorbent systems. Results: TGF-β1was found in milk from 23 women in the control group (53.49%) and 11 in the allergy group (37.93%). When TGF-β1 was present, the median concentration was higher in the allergy group than in the control (61.5 and 30.4 pg/mL, respectively; P < 0.004). IL-10 was present in the colostrum of all the women and the median IL-10 concentration did not differ between the allergy (50.5 pg/mL) and control (51.5 pg/mL) groups. The probability of occurrence of a positive IL-4 value in the allergy group was greater than in the control group (chi-squared [df=1] = 2.60, P < 0.053). Median IL-4 level did not differ significantly between the two groups (0.5 and 0.5 pg/mL respectively). Conclusions: TGF-β1 was detected less often in the colostrum of allergic mothers than in that of mothers without allergy (but the difference was not statistically significant). IL-4 was found more often in the colostrum of allergic mothers than nonallergic ones. The allergy status did not correlate with IL-10 concentration.
    Źródło:
    Acta Biochimica Polonica; 2009, 56, 3; 411-414
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Aerial detection of contamination with the use of unmanned vehicles : development prospects
    Autorzy:
    Harmata, Władysław.
    Powiązania:
    Scientific Journal of the Military University of Land Forces 2018, nr 1, s. 5-24
    Współwytwórcy:
    Witczak, Marek. Autor
    Pietrzak, Grzegorz. Autor
    Data publikacji:
    2018
    Tematy:
    Wojsko Polskie (1944- )
    Zanieczyszczenia chemiczne środowiska
    Obrona przeciwchemiczna
    Statki powietrzne bezzałogowe
    Ochrona środowiska
    Artykuł z czasopisma wojskowego
    Artykuł z czasopisma naukowego
    Opis:
    Bibliografia, netografia, wykaz norm na stronach 22-24.
    Dostawca treści:
    Bibliografia CBW
    Artykuł
    Tytuł:
    Non-linear mastic characteristics based on the modified MSCR (Multiple Stress Creep Recovery) test
    Nieliniowa charakterystyka mastyksu na podstawie zmodyfikowanej metody MSCR
    Autorzy:
    Mazurek, Grzegorz
    Pszczoła, Marek
    Szydłowski, Cezary
    Powiązania:
    https://bibliotekanauki.pl/articles/402366.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Świętokrzyska w Kielcach. Wydawnictwo PŚw
    Tematy:
    non-linear viscoelasticity
    numerical modelling
    MSCR test
    mastic
    lepkosprężystość nieliniowa
    modelowanie numeryczne
    test MSCR
    mastyks
    Opis:
    Mastic containing asphalt in its composition is an example of a viscoelastic material. It is an effective binder in asphalt. It consists of a filler (<0.063 mm) and asphalt mixed in the right proportions. Just like in asphalt, its response depends on the temperature level, the load and stress time. Changing the stress stiffness of the mastic affects the non-linear course of the stress-strain relationship. Modelling of the non-linear course of the mastic response for any stress history was performed using a single-integral Schapery equation. Two mastic composites made using filler to asphalt 2:1 ratio, was used in the tests. In addition, the contents of the filler, in one of the compositions, was enriched with hydrated lime in an amount of 15% in relation to the mass of the lime filler. It was found that the use of non-linear viscoelasticity model describes, in a comprehensive manner, the change in strain over time with different stress histories. In addition, hydrated lime reduced strains in the mastic compared to a composition consisting of limestone dust only.
    Mastyks zawierający w swoim składzie asfalt jest przykładem materiału lepkosprężystego. Stanowi on efektywne lepiszcze w mieszance mineralno-asfaltowej. Składa się on z wypełniacza (<0,063 mm) oraz asfaltu wymieszanego w odpowiednich proporcjach. Tak samo jak w mma jego odpowiedź zależy od poziomu temperatury, czasu oddziaływania obciążenia. Zmiana sztywności mastyksu wywołana naprężeniem rzutuje na nieliniowy przebieg relacji naprężenia-odkształcenie. Modelowanie nieliniowego przebiegu reakcji mastyksu dla dowolnej historii naprężenia zostało wykonane przy użyciu jednocałkowego równania Schapery’ego. W badaniach wykorzystano dwie kompozycje mastyksu sporządzonego przy proporcji wypełniacza do asfaltu wynoszącego 2:1. Ponadto skład wypełniacza został w jednej z kompozycji wzbogacony o wapno hydratyzowane w ilości 15% w stosunku do masy wypełniacza wapiennego. Stwierdzono, że zastosowanie modelu nieliniowej lepkosprężystości w sposób kompleksowy opisuje zmianę odkształcenia w czasie przy różnej historii występowania naprężna. Ponadto wapno hydratyzowane korzystnie ograniczyło deformacje w mastyksie w stosunku do kompozycji składającej się wyłącznie z mączki wapiennej.
    Źródło:
    Structure and Environment; 2019, 11, 1; 23-34
    2081-1500
    Pojawia się w:
    Structure and Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Calendar Effects in the Stock Markets of Central European Countries
    Efekty kalendarzowe na giełdach papierów wartościowych państw Europy Środkowej
    Autorzy:
    Szymański, Marek
    Wojtalik, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/1033617.pdf
    Data publikacji:
    2020-10-30
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Tematy:
    rynek kapitałowy
    anomalie sezonowe
    efekty kalendarzowe
    efektywność rynku
    efekt stycznia
    capital market
    seasonal anomalies
    calendar effects
    market efficiency
    January effect
    Opis:
    The efficient market hypothesis suggests that there are no opportunities to gain above‑normal profits using available information, because it is all reflected in the prices. However, calendar anomalies are found to contradict the efficient market hypothesis and enable investors to predict prices during specific days. Based on a review of papers on market efficiency and market anomalies, this paper examines and compares calendar effects known as ‘the month‑of‑the year effect’ and ‘the day‑of‑the‑week effect’ between the stock markets of three Central European countries: Poland, Hungary and the Czech Republic. The study has revealed the presence of calendar anomalies in the indexes representing small‑cap stocks listed on the Polish stock market and, to some extent, in the indexes used in the Hungarian and Czech stock markets.
    Według hipotezy rynku efektywnego inwestorzy nie są w stanie uzyskiwać ponadprzeciętnych zysków, ponieważ w każdej chwili ceny walorów w pełni odzwierciedlają informacje dostępne na ich temat. Jednakże na rynku występuje wiele anomalii kalendarzowych, co stanowi wyjątek od hipotezy efektywnego rynku. Głównym celem tego artykułu jest analiza i porównanie anomalii kalendarzowych – efektu miesiąca w roku i efektu dnia w tygodniu – na giełdach papierów wartościowych krajów Europy Środkowej (Polska, Węgry i Czechy). W pracy przeprowadzono krytyczną analizę literatury z zakresu anomalii rynkowych. Wyniki badań nie są jednoznaczne. Na polskiej giełdzie zaobserwowano anomalie w przypadku małych firm. Anomalie sezonowe zostały również zaobserwowane do pewnego stopnia na giełdzie węgierskiej oraz czeskiej.
    Źródło:
    Acta Universitatis Lodziensis. Folia Oeconomica; 2020, 5, 350; 27-51
    0208-6018
    2353-7663
    Pojawia się w:
    Acta Universitatis Lodziensis. Folia Oeconomica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Checklist in colorectal surgery – proposal of experts of the Polish Club of Coloproctology and National Consultant in general surgery
    Autorzy:
    Banasiewicz, Tomasz
    Krokowicz, Łukasz
    Richter, Piotr
    Dziki, Adam
    Krokowicz, Piotr
    Lorenc, Zbigniew
    Szczepkowski, Marek
    Drews, Michał
    Wallner, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/1393115.pdf
    Data publikacji:
    2017
    Wydawca:
    Index Copernicus International
    Tematy:
    Checklist
    colorectal surgery
    surgical complications
    Opis:
    A checklist is a collection of information that helps reduce the risk of failure due to limitations in human memory and attention. In surgery, the first Surgical Safety Checklist (SSC), created under the supervision of WHO (World Health Organization), was established in 2007 and covers three stages related to the patient's stay in the operating theater and operation: 1. Prior to initiation (induction) of anesthesia; 2. before cutting the skin; 3. before the patient leaves the operating room Colorectal surgery is particularly at high risk for complications and relatively high mortality. Elimination or, more likely, reducing the risk of complications by standardizing perioperative procedures may be particularly important in this group. The introduction of "dedicated" colorectal checklist surgery seems to be justified. The checklist proposed by the authors in colorectal surgery is divided into four stages, in which conscientious completion of checklists is intended to reduce the potential risk of complications due to hospitalization and surgical treatment. The presented checklist is obviously not closed, as a new publications or recommendations appear, some points may be modified, new issues may be added to the checklist. At present, however, it is a tool considering the well-known and confirmed elements of intraoperative procedures, the compliance of which may significantly reduce the rate of adverse events or surgical complications.
    Źródło:
    Polish Journal of Surgery; 2017, 89, 6; 44-49
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stability and vibrations of micro-nonhomogeneous plate band resting on elastic subsoil
    Stateczność i drgania mikroniejednorodnego pasma płytowego spoczywającego na podłożu sprężystym
    Autorzy:
    Chalecki, Marek
    Jemielita, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/1853648.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    pasmo płytowe
    częstość drgań własnych
    wyboczenie
    podłoże sprężyste
    metoda przemieszczeń
    plate band
    natural frequency
    buckling
    elastic subsoil
    displacement method
    Opis:
    The paper presents a procedure of calculation of natural frequencies and critical buckling forces of a micro-nonhomogeneous plate band resting on nonhomogeneous elastic subsoil and having any given boundary conditions. The band consists of N parts - cells - called elements, having a constant width l = L/N. Each band element consists of three parts - subelements with variable widths. The two of these subelements are matrix, the third - inclusion placed symmetrically relative to the matrix. Each band element is built of two isotropic materials. The matrix and inclusion bands have the stiffness and mass per area unit as well as they rest on the subsoil. The model has been derived with use of the classical displacement method. The stiffness matrix of any band element and then the band stiffness matrix have been built. An appropriate computer program has been written to calculate natural frequencies and critical buckling forces. A number of tests have been performed to check the working of the program and several calculative examples has been presented in the paper.
    W pracy przedstawiono sposób obliczania częstości drgań własnych i wyznaczania wartości sił krytycznych mikroniejednorodnego pasma płytowego o dowolnych warunkach brzegowych, spoczywającego na niejednorodnym podłożu sprężystym. Pasmo składa się z N części - komórek, zwanych elementami, o stałej szerokości l = L/N. Każdy element pasmowy składa się z trzech części - subelementów o zmiennych szerokościach. Dwie z nich są osnową, trzecia zaś wtrąceniem symetrycznie położonym względem osnowy. Każdy element pasmowy składa się z dwóch izotropowych materiałów. Pasma osnowy i wtrącenia mają pewne sztywności i masy na jednostkę powierzchni oraz spoczywają na podłożu o pewnej sztywności. Do wyznaczenia częstości drgań własnych i wartości krytycznych zastosowano metodę przemieszczeń. Zbudowano macierz sztywności dowolnego elementu pasmowego, a następnie macierz sztywności pasma. Ułożono odpowiedni program na wyznaczenie częstości drgań własnych i sił krytycznych ze względu na wyboczenie. Wykonano szereg testów sprawdzających działanie programu i podano szereg przykładów obliczeniowych.
    Źródło:
    Archives of Civil Engineering; 2021, 67, 1; 403-424
    1230-2945
    Pojawia się w:
    Archives of Civil Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wettability of the System of Cast Iron and Magnesia Ceramics with Graphite
    Autorzy:
    Hosadyna-Kondracka, Małgorzata
    Nowak, Rafał
    Turalska, Patrycja
    Bruzda, Grzegorz
    Boroń, Łukasz
    Wawrylak, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/2174618.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    composites
    metal-ceramic bonding
    wettability
    sessile drop method
    cast iron
    kompozyty
    wiązanie metal-ceramika
    zwilżalność
    metoda osiadłej kropli
    żeliwo
    Opis:
    In this paper examinations of high-temperature wetting tests of 3 systems of liquid alloy – cast iron in contact with ceramic materials: magnesia ceramics in combination with natural graphite were presented. After wettability testing, the microscopic observations of the morphology of the sample surface and the cross-section microstructure with the chemical composition in micro-areas were examined. One of the objective of this work was also to verify whether the graphite content would affect the wettability of the magnesia ceramics. The study of high-temperature wetting kinetics of the liquid alloy in contact with the ceramic material, by the "sessile drop" method with capillary purification (CP) procedure was conducted. Under the test conditions, at a temperature of 1450°C and time 15 minutes, all 3 experimental systems showed a non-wetting behaviour. The average contact angle for the system with cast iron drop on magnesia ceramics was 140°, on magnesia ceramics with 10 parts per weight of graphite was 137° and on magnesia ceramics with 30 parts per weight of graphite - 139°. Microscopic observations revealed that in the case of the sample consisting of the cast iron drop on the substrate with magnesia ceramics, the formation of fine separations was not observed, unlike the systems with the substrate with magnesia ceramics and the addition of natural graphite. Numerous, fine droplets accumulate on the graphite flakes and consist mainly of Si as well as Fe and O. On the other hand, the rough MgO grains have a gray, matt surface, without fine separations. The conducted observations indicate the mechanical nature of the bonding - liquid metal penetrates into the pores of the rough ceramics of the substrate. However, in the case of systems of cast iron drop with magnesia ceramics and addition of graphite, probably the adhesive connection and the physical attraction of elements derived from cast iron drop with the flake graphite appeared as well.
    Źródło:
    Archives of Foundry Engineering; 2022, 22, 3; 25--33
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Removal of nickel(II) from industrial wastewater using selected methods: a review
    Autorzy:
    Kruszelnicka, Izabela
    Ginter-Kramarczyk, Dobrochna
    Góra, Wojciech
    Staszak, Katarzyna
    Baraniak, Marek
    Lota, Grzegorz
    Regel-Rosocka, Magdalena
    Powiązania:
    https://bibliotekanauki.pl/articles/2202888.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    nickel
    nickel removal
    wastewater
    adsorption
    electrocoagulation
    membrane techniques
    nikiel
    usuwanie niklu
    ścieki
    adsorpcja
    elektrokoagulacja
    techniki membranowe
    Opis:
    Due to the increasing problem resulting from environmental pollution with heavy metals, great emphasis is placed on the development of removal methods of these pollutants from the environment. This study presents a literature review on the methods for the removal of nickel ions from aqueous solutions such as sorption, especially using low-cost sorbents which are very popular in 21 century, electrochemical processes and membrane techniques. It is often impossible to use a single technique for efficient removal of heavy metals from wastewater as the process depends on many factors, such as wastewater composition, pH, temperature and many others. The aim of this review is to present some selected removal techniques of nickel(II) from wastewater from the point of view of their efficiency and applicability.
    Źródło:
    Chemical and Process Engineering; 2022, 43, 4; 437--448
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Periprocedural decrease in tumor necrosis factor alpha is a risk factor for atrial fibrillation recurrence after ablation
    Autorzy:
    Szczerba, Ewa
    Koźluk, Edward
    Januszkiewicz, Łukasz
    Lisicka, Monika
    Nowak, Justyna
    Kondracka, Agnieszka
    Majstrak, Joanna
    Rodkiewicz, Dariusz
    Piątkowska, Agnieszka
    Kiliszek, Marek
    Opolski, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/25712809.pdf
    Data publikacji:
    2022-12-05
    Wydawca:
    Gdański Uniwersytet Medyczny
    Tematy:
    atrial fibrillation
    ablation
    TNF-alpha
    Opis:
    Background Concentration of tumor necrosis factor alpha (TNF-alpha) might be useful in selecting patients with paroxysmal atrial fibrillation (PAF) who will benefit the most from pulmonary vein isolation. Material and methods We performed prospective cohort study among patients with PAF who had sinus rhythm prior to undergoing either radiofrequency ablation or cryoablation procedure. Blood samples were collected at the start of the procedure and 16-24 h after. TNF-alpha concentrations were measured. Follow-up data was obtained during a structured telephone interview and 24-hour ECG Holter monitoring 12 months after the ablation procedure. Results Thirty seven patients were enrolled. After 12-month follow-up 27 patients maintained sinus rhythm, 8 had recurrence of AF and 2 were lost to follow-up. There was no significant correlation between TNF-alpha concentrations in any of the samples and the recurrence of arrhythmia (for pre-procedural samples: 1.75 pg/ml vs 1.74 pg/ml; p=0.72; for post-procedural samples: 1.49 pg/ml vs 1.79 pg/ml; p=0.16). In patients who had a recurrence of AF, we observed a decrease in the periprocedural TNF-alpha concentration (-0.12 pg/ml vs 0.05 pg/ml; p=0.05). Conclusions Neither pre- nor post-procedural TNF-alpha concentrations are predictive of ablation outcome in patients with PAF. We observed a decrease in the periprocedural TNF-alpha concentration in patients who had AF recurrence.
    Źródło:
    European Journal of Translational and Clinical Medicine; 2022, 5, 2; 16-23
    2657-3148
    2657-3156
    Pojawia się w:
    European Journal of Translational and Clinical Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Detrital zircon age data from the conglomerates in the Upper Silesian and Małopolska blocks, and their implications for the pre-Variscan tectonic evolution (S Poland)
    Autorzy:
    Habryn, Ryszard
    Krzemińska, Ewa
    Krzemiński, Leszek
    Markowiak, Marek
    Zieliński, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/2059693.pdf
    Data publikacji:
    2020
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Teisseyre-Tornquist Terrane Assemblage
    maximum deposition age
    proximal source
    provenance
    Cadomian orogen
    Baltica
    Opis:
    Detrital zircon age of the conglomerates from the Upper Silesian (USB) and Małopolska (MB) (S Poland) have been investigated to compare their deposition age and possible provenience. The size and poor sorting of the lithoclasts reflect a short transportation, with deposition close to the sourceland. The Late Ediacaran conglomerate of the Potrójna IG 1 and Raciechowice 1 boreholes (USB) reveal a good match between the ages known from the local basement explored by boreholes. Detrital zircon clusters in a range of 579-585 Ma and 628-638 Ma and of 707 Ma are consistent with the distributions of Cadomian magmatism within the nearest orogenic belt or those identified elsewhere within the Brunovistulicum. In case of the conglomerate deposited in the Batowice 2 borehole (MB), the zircon clusters of 532, 551, 594 and 649 Ma, accompanied with a pre-Svecofennian group peaked at 2071 Ma, and the lack of Sveconorvegian population may document a tectono-sedimentary interaction between the Baltica's southern margin and the Gondwanan Cadomian and Late Cadomian basement during Early Paleozoic time. This conglomerate bed was deposited later, after the Early Ordovician, then docking of Małopolska Block - Baltica was probably completed.
    Źródło:
    Geological Quarterly; 2020, 64, 2; 321--341
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    “Turn back the course of a river / the course of life / that is my mission.” On the poems by Wincenty Różański
    „Cofnąć bieg rzeki / bieg życia / oto moje posłanie”. O wierszach Wincentego Różańskiego
    Autorzy:
    Nalepa, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/1041979.pdf
    Data publikacji:
    2019-12-31
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Tematy:
    Wincenty Różański
    poezja
    Edward Stachura
    Grzegorz Ratajczyk
    matka
    religia
    flâneur
    Mosina
    Poznań
    poetry
    mother
    religion
    Opis:
    The article is an attempt at discussing the most important features of Wincenty Różański’s poetry written in the final years of his creative period. This poetry is strongly subjective, manifesting the poet’s Catholicism, and entrusting himself to the Blessed Virgin Mary, but it also tackled the subject of everyday life, routine behaviors and activities. In addition, the poet’s poems are characteristic in terms of their dialogical and stylistic relations compared to other cultural contexts, especially in the case of Grzegorz Ratajczyk’s paintings, as well as the prose and poems by Edward Stachura.
    Artykuł jest próbą omówienia najważniejszych cech poezji Wincentego Różańskiego z ostatnich lat jego aktywności twórczej. Jest to literatura silnie zsubiektywizowana, manifestująca katolickość poety, zawierzenie Najświętszej Marii Pannie, z drugiej strony podejmująca tematykę życia codziennego, rutynowych zachowań i czynności. Dokonano ponadto charakterystyki wierszy poety poznańskiego pod względem ich relacji dialogowych i stylizacyjnych w stosunku do innych tekstów kultury, szczególnie malarstwa Grzegorza Ratajczyka oraz prozy i poematów Edwarda Stachury.
    Źródło:
    Acta Universitatis Lodziensis. Folia Litteraria Polonica; 2019, 55, 4; 99-130
    1505-9057
    2353-1908
    Pojawia się w:
    Acta Universitatis Lodziensis. Folia Litteraria Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Statement of the expert group on the current practice and prospects for the treatment of complex perirectal fistulas in the course of Crohn’s disease
    Autorzy:
    Banasiewicz, Tomasz
    Eder, Piotr
    Rydzewska, Grażyna
    Reguła, Jarosław
    Dobrowolska, Agnieszka
    Durlik, Marek
    Wallner, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/1392381.pdf
    Data publikacji:
    2019
    Wydawca:
    Index Copernicus International
    Tematy:
    Crohn's disease
    perianal fistula
    surgical treatment of fistulas
    biological treatment
    stem cells
    Opis:
    Perirectal fistulas in the course of Crohn’s disease (CD) constitute an important problem in this group of patients. They are observed in a vast majority of patients with involvement through colorectal inflammation. Perirectal fistulas in CD present a great diagnostic and therapeutic challenge due to the intensified clinical symptoms and worse prognosis than in the case of crypt originating fistulas. The condition for implementation of effective treatment of perirectal fistulas in the course of CD is the correct diagnosis, defining the anatomy of fistulas, presence of potential stenoses and inflammation in the gastrointestinal tract. Treatment of these fistulas is difficult and requires close cooperation between the colorectal surgeon and the gastroenterologist. The combination of surgical and pharmacological treatment has higher efficacy compared to surgical treatment or pharmacotherapy alone. In conservative treatment, aminosalicylates and steroids are of minor importance, while chemotherapeutics, antibiotics, and thiopurines find application in daily clinical practice. TNF-α neutralizing antibodies such as infliximab (IFX), adalimumab (ADA) or certolizumab (CER) prove to be the most effective. Surgical treatment may be provided as ad hoc; in this case, drainage procedures are recommended, usually with leaving a loose seton. Planned procedures consist in the excision of fistulas (simple fistulas) or performing more complex procedures, such as advancement flaps or ligation of the intersphincteric fistula tract Surgical measures can be complemented by the use of video technology (video-assisted anal fistula treatment VAAFT) or vacuum therapy. In extreme cases, it may be necessary to create the stoma. Treatment of perirectal fistulas includes adhesives or so-called plugs. High hopes may be associated with the introduction of stem cells into clinical practice, which is the administration of non-hematopoietic multipotent cells to the fistulas to induce the phenomenon of immunomodulation and tissue healing.
    Źródło:
    Polish Journal of Surgery; 2019, 91, 1; 38-46
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Underground Water Monitoring and Visualisation System at the Piast-Ziemowit Hard Coal Mine, Ziemowit Operation
    System monitoringu i wizualizacji wód dołowych w KWK Piast-Ziemowit Ruch Ziemowit
    Autorzy:
    Wąs, Grzegorz
    Kluska, Adam
    Sobolowski, Marek
    Garbacz, Marcin
    Pałka, Marcin
    Wojtas, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/29520690.pdf
    Data publikacji:
    2022
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    monitoring
    mine water
    dewatering
    visualisation
    wody kopalniane
    odwodnienie
    wizualizacja
    Opis:
    The paper presents a monitoring system for the pipeline network at Piast-Ziemowit Hard Coal Mine, Ziemowit Operation, which was implemented in February 2023. The system covers monitoring of both fire system pipelines and pipelines of the dewatering and drinking water systems. The Ziemowit Operation is self-sufficient in terms of water consumption both for technological and domestic purposes. Precise monitoring of pipelines allows to maintain installation parameters at a level sufficient for technological and mine fire safety purposes. The system also allows for the detection of emergency conditions, monitoring of water levels in storage reservoirs, while in terms of hydrogeology it is used for water balancing. Flowmeters installed at the pumps allow the actual measurement of pump performance, determine their efficiency, and thus allow diagnostics to anticipate future failures and take preventive measures. Visualisation of the performance of the system is available from a web browser and enables convenient and intuitive configuration to suit the user's current needs related to making changes to the system. The visualisation application has extensive functionality for current viewing and analysis of historical events and diagnostics of emergency conditions.
    W artykule przedstawiono system monitorowania sieci rurociągów w kopalni Piast- -Ziemowit Ruch Ziemowit, który został wdrożony w lutym 2023 r. System obejmuje monitoring rurociągów systemów: przeciwpożarowego, odwadniania oraz wody pitnej. Ruch Ziemowit jest samowystarczalny w zakresie zużycia wody zarówno do celów technologicznych, jak i bytowych. Precyzyjny monitoring rurociągów pozwala na zapewnienie parametrów instalacji dla celów technologicznych i bezpieczeństwa pożarowego kopalni. System pozwala również na wykrywanie stanów awaryjnych, monitoring poziomu wody w zbiornikach wyrównawczych, a pod względem hydrogeologicznym stosowany jest do bilansowania wód. Przepływomierze zainstalowane przy pompach pozwalają na faktyczny pomiar ich wydajności, określenie ich sprawności, a tym samym pozwalają na diagnostykę wyprzedzającą przyszłe awarie oraz podjęcie działań zapobiegawczych. Wizualizacja pracy systemu dostępna jest z poziomu przeglądarki internetowej i pozwala na wygodną oraz intuicyjną konfigurację pod bieżące potrzeby użytkownika związane z wprowadzaniem zmian w instalacji. Aplikacja wizualizacyjna posiada rozbudowaną funkcjonalność do podglądu bieżącego i analizy zdarzeń historycznych oraz diagnostyki stanów awaryjnych.
    Źródło:
    Mining – Informatics, Automation and Electrical Engineering; 2022, 60, 4; 21-32
    2450-7326
    2449-6421
    Pojawia się w:
    Mining – Informatics, Automation and Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Tectonic-climatic interactions during changes of depositional environments in the Carpathian foreland: An example from the Neogene of central Poland
    Autorzy:
    Widera, Marek
    Zieliński, Tomasz
    Chomiak, Lilianna
    Maciaszek, Piotr
    Wachocki, Robert
    Bechtel, Achim
    Słodkowska, Barbara
    Worobiec, Elżbieta
    Worobiec, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/2024070.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    river type
    lignite seam
    sedimentology
    tectonics
    climate
    miocene
    pokłady węgla brunatnego
    sedymentologia
    tektonika
    klimat
    miocen
    Opis:
    Many geological problems have not been convincingly explained so far and are debatable, for instance the origin and changes of the Neogene depositional environments in central Poland. Therefore, these changes have been reconstructed in terms of global to local tectonic and climatic fluctuations. The examined Neogene deposits are divided into a sub-lignite unit (Koźmin Formation), a lignite-bearing unit (Grey Clays Member), and a supra-lignite unit (Wielkopolska Member). The two lithostratigraphic members constitute the Poznań Formation. The results of facies analysis show that the Koźmin Formation was deposited by relatively high-gradient and well-drained braided rivers. Most likely, they encompassed widespread alluvial plains. In the case of the Grey Clays Member, the type of river in close proximity to which the mid-Miocene low-lying mires existed and then were transformed into the first Mid-Miocene Lignite Seam (MPLS-1), has not been resolved. The obtained results confirm the formation of the Wielkopolska Member by low-gradient, but mostly well-drained anastomosing or anastomosing-to-meandering rivers. The depositional evolution of the examined successions depended on tectonic and climatic changes that may be closely related to the mid-Miocene great tectonic remodelling of the Alpine-Carpathian orogen. This resulted in palaeogeographic changes in its foreland in the form of limiting the flow of wet air and water masses from the south and vertical tectonic movements.
    Źródło:
    Acta Geologica Polonica; 2021, 71, 4; 519--542
    0001-5709
    Pojawia się w:
    Acta Geologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of paramedics’ knowledge and skills on dealing with dental injuries
    Ocena wiedzy i umiejętności ratowników medycznych na temat postępowania w urazach zębów
    Autorzy:
    Lewandowski, Bogumił
    Brodowski, Robert
    Stopyra, Wojciech
    Muster, Marek
    Włodyka, Andrzej
    Migut, Małgorzata
    Leja, Michał
    Wozniak, Krystyna
    Kucaba, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/437816.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
    Tematy:
    dental injuries
    first aid
    paramedics’ knowledge
    urazy zębów
    pierwsza pomoc
    wiedza ratowników medycznych
    Opis:
    Introduction: Traumatic teeth and mouth injuries constitute a fixed percentage of injuries. They occur as only dental injuries or accompany fractures of craniofacial skeleton or multiorgan injuries in the body. The aim of the study was to assess the paramedics’ knowledge of first aid principles in cases of traumatic dental and masticatory system injuries. Material and Methods: A survey was conducted among 138 randomly selected paramedics employed in the Medical Rescue Teams and emergency departments in Rzeszów region, who were informed about the anonymous nature of the project. A voluntarily completed questionnaire was simultaneously assumed an informed consent to participate in the study. The questionnaire consisted of two parts. The first part covered respondents’ demographic and social data, while the second part focused on the first aid conduct in tooth injuries and included 18 questions. Results: The results demonstrated that the paramedics’ knowledge of the conduct in cases of the most common dental injuries, ie. tooth knocking and dislocation, fracture of tooth crown or tooth root is unsatisfactory. Most of the respondents gave answers intuitively. Studies and statistical analysis did not confirm a significant correlation between subjects’ professional experience (p = 0.5891) and education (p = 0.1093) with their skills and knowledge of the proceedings after dental injuries. The fact that about 20% of the paramedics did not consider it necessary to broaden their knowledge in this subject seems distressing. Conclusions: In the light of conducted research, systematic training in dental first aid in terms of proceeding in teeth injuries for paramedics seems justified as well as its inclusion in the curriculum of undergraduate programme for paramedics.
    Wstęp: Obrażenia urazowe zębów i okolicy jamy ustnej stanowią stały odsetek urazów ciała. Mogą występować jako samodzielne uszkodzenia zębów lub towarzyszyć złamaniom szkieletu części twarzowej czaszki lub tzw. obrażeniom wielonarządowym ciała. Cel pracy: Celem pracy była ocena wiedzy i znajomość zasad udzielania pomocy w przypadkach urazowych obrażeń zębów i narządu żucia przez ratowników medycznych. Materiał i metoda: Badania ankietowe przeprowadzono w grupie 138 losowo wybranych ratowników medycznych zatrudnionych w Zespołach Ratownictwa Medycznego oraz Szpitalnych Oddziałach Ratunkowych na terenie regionu rzeszowskiego, których poinformowano o anonimowym charakterze projektu. Dobrowolnie wypełnienie kwestionariusza ankiety uznano jednocześnie za świa domą zgodę na udział w badaniu. Kwestionariusz ankiety składał się z dwóch części. Pierwsza część dotyczyła danych demograficzno-społecznych respondentów, zaś druga część merytoryczna dotyczyła udzielania pierwszej pomocy w urazach zębów i obejmowała 18 pytań. Wyniki: Przeprowadzone badania wykazały, że wiedza badanej grupy ratowników medycznych w zakresie postępowania w przypadkach najczęściej występujących obrażeń i uszkodzeń zębów tj. wybicie i zwichnięcie zęba, złamanie korony lub korzenia zęba jest niezadowalająca. Większość respondentów udzielała odpowiedzi intuicyjnie. Przeprowadzone badania i analiza statystyczna nie potwierdziła istotnej zależności pomiędzy stażempracy (p=0,5891) oraz wykształceniem badanych (p=0,1093) a ich umiejętnościami i wiedzą na temat postępowania po urazach zębów. Niepokojący jest fakt, że około 20% ratowników medycznych nie widziało konieczności poszerzenia wiedzy w omawianej tematyce. Wnioski: W świetle przeprowadzonych badań uzasadnione jest prowadzenie systematycznych szkoleń z pierwszej pomocy stomatologicznej w aspekcie postępowania w urazach zębów dla ratowników medycznych oraz włączenia ich do programu studiów licencjackich ratowników medycznych.
    Źródło:
    Medical Review; 2016, 3; 287-299
    2450-6761
    Pojawia się w:
    Medical Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Guidelines of the Association of Polish Surgeons and the Polish Society of Surgical Oncology on the accreditation of healthcare centers providing cytoreductive surgery and HIPEC for primary and secondary peritoneal cancers
    Autorzy:
    Jastrzębski, Tomasz
    Richter, Piotr
    Zegarski, Wojciech
    Dziki, Adam
    Wallner, Grzegorz
    Jeziorski, Arkadiusz
    Wysocki, Wojciech
    Jackowski, Marek
    Bębenek, Marek
    Olesiński, Tomasz
    Polkowski, Wojciech
    Wyrwicz, Lucjan
    Wydra, Dariusz
    Biernat, Wojciech
    Czauderna, Piotr
    Studniarek, Michał
    Polec, Tomasz
    Owczuk, Radosław
    Sommer, Anna
    Szewczyk, Krzysztof
    Mielko, Jerzy
    Powiązania:
    https://bibliotekanauki.pl/articles/1391728.pdf
    Data publikacji:
    2020
    Wydawca:
    Index Copernicus International
    Tematy:
    accreditation
    cytoreduction
    HIPEC
    peritoneal cancer
    quality of treatment
    Opis:
    Surgical interventions in patients with peritoneal metastases combined with hyperthermic intraperitoneal chemotherapy (HIPEC) and systemic treatment are becoming more common and, when applied to selected patient groups, they reach 5-year survival rates of 32–52%. Good clinical outcomes require experienced and well-equipped healthcare centers, experienced surgical team and adequate patient qualification process. As a result of the discussion on the need for evaluation of quality of care and treatment outcomes and at the request of the Peritoneal Cancer Section of the Polish Society of Surgical Oncology, accreditation standards have been developed and the Accreditation Committee has been established for healthcare centers providing cytoreductive surgery and HIPEC for the management of primary and secondary peritoneal cancers.
    Źródło:
    Polish Journal of Surgery; 2020, 92, 4; 47-53
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An improvement of body surface area formulas using the 3D scanning technique
    Autorzy:
    Redlarski, Grzegorz
    Kozieł, Sławomir
    Krawczuk, Marek
    Siebert, Janusz
    Tałałaj, Marek
    Pałkowski, Aleksander
    Tojza, Piotr
    Cieślikowska, Zuzanna
    Litzbarski, Leszek S.
    Powiązania:
    https://bibliotekanauki.pl/articles/31341050.pdf
    Data publikacji:
    2024-05-20
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    cancer therapy
    diagnosis
    3D body scanning
    body surface area formulae
    BSA calculations
    drugs dosage
    Opis:
    Objectives Body surface area (BSA) is one of the major parameters used in several medical fields. However, there are concerns raised about its usefulness, mostly due to the ambiguity of its estimation. Material and Methods Authors have conducted a voluntary study to investigate BSA distribution and estimation in a group of 179 adult people of various sex, age, and physique. Here, there is provided an extended analysis of the majority of known BSA formulas. Furthermore, it was supplement with a comparison with the authors' propositions of enhanced formulas coefficients for known formulas models as well as with new power models based on an increased number of anthropometric data. Results Introduction of the enhanced formulas coefficients cause a reduction of at least 30.5% in mean absolute error and 21.1% in maximum error in comparison with their known counterparts. Conclusions In the context of the analysis presented it can be stated that the development of a single universal body surface area formula, based on a small number of state variables, is not possible. Therefore, it is necessary and justified to search for new estimation models that allow for quick and accurate calculation of body surface area for the entire population, regardless of individual body variations. The new formulas presented are such an alternative, which achieves better results than the previously known methods.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2024, 37, 2; 205-219
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Incremental processing of polymer materials using the INDUSTRY 4.0 network structure
    Przyrostowe przetwarzanie materiałów polimerowych z zastosowaniem sieciowej struktury INDUSTRY 4.0
    Autorzy:
    Paszkiewicz, Andrzej
    Budzik, Grzegorz
    Bolanowski, Marek
    Woźniak, Joanna
    Przytuła, Mateusz
    Kiełbicki, Mateusz
    Poliński, Przemysław
    Kochmański, Łukasz
    Powiązania:
    https://bibliotekanauki.pl/articles/2088257.pdf
    Data publikacji:
    2021
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
    Tematy:
    polymer materials
    network communications
    3D printing
    additive manufacturing
    materiały polimerowe
    komunikacja sieciowa
    druk 3D
    technologie przyrostowe
    Opis:
    The article presents the possibility of polymeric materials incremental processing, using the network structure of INDUSTRY 4.0. The selected network control systems for 3D printers processing polymer materials were analyzed in terms of software and hardware identification used in industrial conditions, science and education. Both solutions requiring continuous data exchange between the controlling computer and the 3D printer and systems dedicated to control with the use of a computer network were taken into account. The possibilities of adapting 3D printers to work in the remote control mode and control of the incremental process are presented. The possibilities of developing processes related to 3D printing based on remote control using network systems were also determined.
    Artykuł przedstawia możliwości przyrostowego przetwarzania materiałów polimerowych z zastosowaniem sieciowej struktury INDUSTRY 4.0. Analizie poddano wybrane systemy sterowania sieciowego dla drukarek 3D pod względem identyfikacji softwarowej i hardwarowej stosowane w warunkach przemysłowych, nauce i edukacji. Wzięto pod uwagę zarówno rozwiązania w których występuje konieczność ciągłej wymiany danych pomiędzy komputerem sterującym a drukarką 3D oraz systemy, które są dedykowane do sterowania z zastosowaniem sieci komputerowej. Przedstawiono możliwości adaptacji drukarek 3D do pracy w trybie zdalnego sterowania i kontroli procesu przyrostowego. Określono również możliwości rozwoju procesów związanych z drukiem 3D w oparciu o zdalne sterowanie wykorzystujące systemy sieciowe.
    Źródło:
    Polimery; 2021, 66, 7-8; 418--425
    0032-2725
    Pojawia się w:
    Polimery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Changes within permanent grasslands used for agriculture in the West Pomeranian Voivodship
    Autorzy:
    Kitczak, Teodor
    Podlasiński, Marek
    Jarnuszewski, Grzegorz
    Malinowski, Ryszard
    Powiązania:
    https://bibliotekanauki.pl/articles/28411644.pdf
    Data publikacji:
    2023
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    agricultural land
    decrease in permanent grasslands share
    grasslands share
    land use changes
    transformation of grasslands
    Opis:
    The study of changes in grassland was conducted on the territory of individual counties of the West Pomeranian Voivodship. Based on data collected in the Valorisation of the Agricultural Production Space of Poland and spatial data (an electronic 1:5000 soil and agricultural map) the basic information on the use of agricultural land in the 70s of the 20th century. Changes in use over time were analysed based on data the Statistics Poland (Pol.: Główny Urząd Statystyczny - GUS), General Geographic Database and The Agency for Restructuring and Modernisation of Agriculture Crop Register (Pol.: Agencja Restrukturyzacji i Modernizacji Rolnictwa - ARiMR). The studies showed that in the West Pomeranian Voivodship, a successive decrease in the share of permanent grasslands (0.9%) and arable lands (1.4%) is observed. There is a spatial variation in the share of permanent grassland in the province’s counties, with a distinction between northern and southern counties. The main direction of change in grassland area is arable land, which applies to counties with the highest share of permanent grassland (PG) and counties with a high share of the best soils and forest direction. Land quality was the main factor determining the direction of grassland changes, with the best PG converted to arable land or for investment purposes. In contrast, the weakest were converted to forestry or spontaneously wooded through abandonment. The main reasons for changes in grassland areas in the West Pomeranian Voivodship were: conversion of use to arable land, afforestation of grasslands, land use for urban planning purposes, leaving land fallow and conversion for constructing fishponds.
    Źródło:
    Journal of Water and Land Development; 2023, 59; 108--117
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The interaction of laser radiation with tissue in the aspect of generating the process of decellularization in the preparation of animal origin autologous tissue
    Autorzy:
    Kopernik, Magdalena
    Major, Roman
    Lis, Grzegorz
    Wilczek, Piotr
    Lis, Maciej
    Imbir, Gabriela
    Chrouda, Abir
    Mzyk, Aldona
    Ostrowski, Roman
    Sanak, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/306501.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    zastawka aorty
    FEM
    histologia
    promieniowanie laserowe
    decellularized tissue
    aortic valve
    finite element modeling
    histology
    pulmonary valve
    laser radiation
    Opis:
    Purpose: The aim of the work was to create an appropriate substrate for organ transplantation using bioactive tissue-based scaffold populated by cells of the graft recipient. The purpose of the modeling was to investigate the mechanical effects of wave loading of aortic and pulmonary tissue material. Methods: The biological properties of tissues of aortic and pulmonary valves were modified by the process of decellularization. The host cells were removed by various physical methods with focus on minimal degradation of the extracellular matrix. Thus, the decellularization process was controlled by histological methods. The tissue decellularization process was simulated by finite element modelling. Results: The mechanical results represented by a displacement at the center of the sample were coherent and the heterogeneity of the distribution of the caves on the surface of the samples was confirmed, both by experiment and in the simulation by the alternate occurrence of local minima and maxima. The latter results from the uneven removal of cells from the effect of the wave causing decellularization were also predicted by the numerical model. Laser radiation had a destructive effect on the components of the extracellular matrix (e.g., collagen and elastic fibers), mainly depending on the fluence and number of pulses in a single exposure. Conclusions: The differences between the valve tissue materials were shown, and the impact of the process of decellularization on the properties of the tissues was analyzed. It should be emphasized that due to low absorption and high scattering, laser radiation can deeply penetrate the tissue, which allows for effective decellularization process in the entire volume of irradiated tissue.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2020, 22, 1; 67-77
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Falls-risk in the Third Age University female students against the outcome of a 6-month physical therapy regimen - a randomised trial
    Ryzyko upadku słuchaczek Uniwersytetu Trzeciego Wieku na tle 6-miesięcznego programu fizjoterapeutycznego – badanie randomizowane
    Autorzy:
    Puzio, Grzegorz
    Wloch, Tomasz
    Żarnowski, Kamil
    Górski, Maciek
    Żak, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/1790860.pdf
    Data publikacji:
    2019-02-12
    Wydawca:
    Akademia Wychowania Fizycznego im. Bronisława Czecha w Krakowie
    Tematy:
    Falls-risk
    Third Age University (TAU)
    balance
    physical therapy
    ryzyko upadku
    UTW
    równowaga
    fizjoterapia
    Opis:
    As our bodies age, the performance of all bodily organs and systems deteriorates, adversely affecting their functional capacity and increasing overall falls-risk, even in the most active individuals, including female students of the Third Age Universities (TAU). A well-developed and implemented physiotherapy programme makes it possible to appreciably reduce the falls-risk in TAU students, as well as any attendant negative consequences mitigated. The study aimed to assess the impact of a 6-month original physical therapy regimen on the attendant falls-risk, as established in the female TAU students. The study covered 131 female TAU students, aged 60 and over. The subjects were randomly split into two groups, i.e. Study Group (n = 66; mean age 67.2 5.4 years), and a Control Group (n = 65; mean age 66.2 3.5 years). All subjects were assessed twice, prior to, and up-on the conclusion of a 6-month physical therapy regimen. Falls-risk and individual sense of balance were assessed by a "Step Test" (ST), "One-Leg Standing Test" (OLST), and a "Func-tional Reach Test" (FRT). The study group ST and OLST test scores upon conclusion of the physical therapy regimen were significantly higher (i.e. longer time of a one-legged stand), as compared to the Control Group, for both right and left lower limbs (p > 0.05). FRT scores upon conclusion of the phys-ical therapy regimen were also significantly higher (p > 0.05), as a greater range of body ex-tension was observed. Falls-risk in the TAU students aged 60 and over was significantly decreased through the im-plementation of an original, 6-month physical therapy regimen, while an individual sense of balance in a standing position was also found to be appreciably enhanced. This article is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License. null
    Wstęp: Z wiekiem pogarsza się wydolność wszystkich narządów i układów człowieka, wpływając na pogorszenie sprawności funkcjonalnej i zwiększenie ryzyka upadków u osób, nawet tych najaktywniejszych, do których zaliczamy słuchaczy Uniwersytetów Trzeciego Wieku (UTW). Odpowiednio przygotowany i realizowany program fizjoterapeutyczny pozwala na przygotowanie słuchaczy UTW do zmniejszenia ryzyka upadków i konsekwencji z tym związanych. Cel pracy: Celem pracy jest ocena wpływu autorskiego 6-miesięcznego programu postępowania fizjoterapeutycznego na ryzyko upadku i równowagę słuchaczek UTW. Materiał i metody badań: Badaniami zostały objęte słuchaczki Jagiellońskiego Uniwersytetu Trzeciego Wieku w Krakowie które ukończyły 60. rok życia. Badane podzielono losowo na dwie grupy: grupa badana (n=66, śr. wiek: 67,2 ±5,4 lat), grupa kontrolna (n=65, śr. wiek: 66,2 ±3,5 lat). Badane poddano dwukrotnie ocenie przed i po 6-miesięcznym programie fizjoterapeutycznym. Ocenę ryzyka upadku i równowagi zbadano testami „wchodzenia na stopień” (ST − Step Test), „stania na jednej nodze” (OLST − One-Leg Standing Test), „sięgania” (FRT − Functional Reach Test). Wyniki: Wynik testów (ST) i (OLST) w grupie badanej po programie fizjoterapeutycznym był istotnie wyższy w stosunku do grupy kontrolnej, zarówno w przypadku prawej, jak i lewej kończyny dolnej (p>0,05). Wyniki świadczą o istotnie statystycznie dłuższym czasie stania na jednej nodze w grupie badanej. Także wynik testu (FRT) w grupie badanej po programie fizjoterapeutycznym był istotnie wyższy w stosunku do grupy kontrolnej (p>0,05). Po drugim badaniu zaobserwowano istotny statystycznie większy zakres wychylenia w grupie badanej. Wnioski: Ryzyko upadku słuchaczek UTW które mają 60 lat i więcej istotnie zmniejsza się pod wpływem autorskiego 6-miesięcznego programu fizjoterapeutycznego, a poczucie równowagi w pozycji stojącej poprawia się po programie.
    Źródło:
    Medical Rehabilitation; 2018, 22(3); 35-43
    1427-9622
    1896-3250
    Pojawia się w:
    Medical Rehabilitation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Comparative Analysis of Ecological Lubricants
    Analiza porównawcza proekologicznych środków smarowych
    Autorzy:
    Drabik, Jolanta
    Kozdrach, Rafał
    Wolszczak, Marek
    Michalski, Janusz
    Duszyński, Grzegorz
    Piątkowski, Mariusz
    Powiązania:
    https://bibliotekanauki.pl/articles/2200630.pdf
    Data publikacji:
    2022
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    lubricant based on Crambe Abyssinica seed oil
    thermal stress
    mechanical stress
    wear test
    oxidation resistance
    complex modulus
    środek smarowy na bazie oleju z nasion Crambe Abyssinica
    wymuszenia cieplne
    wymuszenia mechaniczne
    test zużyciowy
    odporność na utlenianie
    kompleksowy moduł zespolony
    Opis:
    On the base of rheological tests, the resistance to deformation of lubricants elaborated on the base of Crambe abyssinica seed oil was evaluated. The developed lubricants were subjected to thermal and mechanical stresses, which allowed the evaluation of their resistance to the oxidation process and anti-wear properties. After tests, the rheological properties of tested lubricants were carried out by determining the complex modulus in oscillation tests. On the base of the rheological parameter, the resistance of lubricants to deformation and change of this indicator under the influence of thermal and mechanical stresses was evaluated. The carried out analysis of changes in the G* complex modulus showed that the tested lubricants show a different resistance to deformation depending on their type and depending on the impact of the extortion. It was found that the rheological index (complex modulus G*) determined in oscillation tests can be a successful criterion for the quality of pro-ecological lubricants.
    Na podstawie testów reologicznych oceniono odporności na deformację środków smarowych opracowanych na bazie oleju z nasion Crambe abyssinica. Opracowane środki smarowe poddano działaniu wymuszeń cieplnych i mechanicznych, co umożliwiło ocenę ich odporności na proces utleniania i właściwości przeciwzużyciowych. Po przeprowadzonych testach wyznaczono właściwości reologiczne badanych środków smarowych, wyznaczając moduł zespolony w testach oscylacyjnych. Na podstawie parametru reologicznego oceniono odporność smarów na odkształcenia i zmianę tego wskaźnika pod wpływem wymuszeń cieplnych i mechanicznych. Przeprowadzona analiza zmian modułu zespolonego G* wykazała, że badane środki smarowe wykazują zróżnicowaną odporność na odkształcenia w zależności od ich rodzaju oraz w zależności od oddziaływania wymuszeń. Stwierdzono, że wskaźnik reologiczny (moduł zespolony G*) wyznaczony w testach oscylacyjnych może z powodzeniem stanowić kryterium jakości proekologicznych środków smarowych.
    Źródło:
    Tribologia; 2022, 4; 17--22
    0208-7774
    Pojawia się w:
    Tribologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Guidelines for the management of surgical departments in non-uniform hospitals during the COVID-19 pandemic
    Autorzy:
    Mitura, Kryspin
    Myśliwiec, Piotr
    Rogula, Wojciech
    Solecki, Michał
    Furtak, Jarosław Piotr
    Kazanowski, Michał
    Kłęk, Stanisław
    Nowakowski, Michał
    Pędziwiatr, Michał
    Zawadzki, Marek
    Wallner, Grzegorz
    Sobocki, Jacek
    Powiązania:
    https://bibliotekanauki.pl/articles/1391784.pdf
    Data publikacji:
    2020
    Wydawca:
    Index Copernicus International
    Tematy:
    COVID-19
    SARS-CoV-2
    pandemic
    epidemic
    surgical care
    personal protective equipment
    FFP3 masks
    surgery
    hospital
    virus
    guidelines
    recommendations
    Opis:
    In the last several weeks we have been witnessing the exponentially progressing pandemic SARS-CoV-2 coronavirus. As the number of people infected with SARS-CoV2 escalates, the problem of surgical management of patients requiring urgent surgery is increasing. Patients infected with SARS-CoV2 virus but with negative test results will appear in general hospitals and may pose a risk to other patients and hospital staff. Health care workers constitutes nearly 17% of infected population in Poland, therefore early identification of infected people becomes a priority to protect human resources and to ensure continuity of the access to a surgical care. Both surgical operations, and endoscopic procedures are considered as interventions with an increased risk of infection. Therefore, determining the algorithm becomes crucial for qualifying patients for surgical treatment, but also to stratify the risk of personnel being infected during surgery and to adequately protect staff. Each hospital should be logistically prepared for the need to perform urgent surgery on a patient with suspected or confirmed infection, including personal protective equipment. Limited availability of the equipment, working under pressure and staff shortages in addition to a highly contagious pathogen necessitate a pragmatic management of human resources in health care. Instant synchronized action is needed, and clear uniform guidelines are essential for the healthcare system to provide citizens with the necessary surgical care while protecting both patients, and staff. This document presents current recommendations regarding surgery during the COVID-19 pandemic in Poland.
    Źródło:
    Polish Journal of Surgery; 2020, 92, 2; 42-53
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Clinical parameters of inflammatory bowel disease in children do not correlate with four common polymorphisms of the transforming growth factor β1 gene
    Autorzy:
    Liberek, Anna
    Jakóbkiewicz-Banecka, Joanna
    Kloska, Anna
    Świderska, Joanna
    Kmieć, Zbigniew
    Łuczak, Grażyna
    Wierzbicki, Piotr
    Liberek, Tomasz
    Marek, Krzysztof
    Plata-Nazar, Katarzyna
    Sikorska-Wiśniewska, Grażyna
    Kamińska, Barbara
    Węgrzyn, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/1039871.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    pediatric patients
    gene polymorphism
    Transforming growth factor β1
    inflammatory bowel disease
    Opis:
    Transforming growth factor β1 (TGF-β1) is a cytokine affecting cell proliferation and development, which also has an immunomodulatory activity. Correlations between polymorphisms of the TGF-β1 gene and clinical parameters of inflammatory bowel disease (IBD) were reported previously in adults. Here, we tested whether such correlations occur in pediatric patients suffering from IBD. One hundred and four pediatric IBD patients were involved in this study. Among them, 36 were diagnosed with Crohn's Disease (CD) and 68 were diagnosed with ulcerative colitis (UC). The control group consisted of 103 children, in which IBD was excluded. TGF-β1 levels were determined in plasma and intestinal mucosa samples. The presence of the TGF β1 protein and the amount of TGF β1 mRNA were estimated in intestinal mucosa by immunohistochemistry and reverse transcription Real-Time PCR, respectively. Four common polymorphisms of the TGF-β1 gene were investigated: -800G/A, -509C/T, 869T/C and 915G/C. No significant correlation between TGF-β1 genotypes and (i) TGF-β1 levels in plasma and tissue samples, (ii) TGF-β1 gene expression efficiency in intestinal mucosa, (iii) IBD clinical parameters and (iv) inflammatory activity could be detected in children suffering from IBD. We conclude that, contrary to previous suggestions, the four common polymorphisms of the TGF-β1 gene do not influence the susceptibility to or clinical parameters of IBD in the tested population of children.
    Źródło:
    Acta Biochimica Polonica; 2011, 58, 4; 641-644
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical modelling of interlayer adhesion in the layer of recycled material with the use of the Leutner apparatus and computed tomography scanning
    Numeryczne modelowanie sczepności międzywarstwowej w warstwie recyklowanej z wykorzystaniem badań w aparacie Leutnera oraz tomografii komputerowej
    Autorzy:
    Mazurek, Grzegorz
    Durlej, Małgorzata
    Iwański, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/2055084.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Świętokrzyska w Kielcach. Wydawnictwo PŚw
    Tematy:
    finite element method
    Leutner test
    contact phenomena
    calibration of the cohesion contact model
    metoda elementów skończonych
    badanie Leutnera
    zjawiska kontaktowe
    kalibracja modelu kohezyjnego
    Opis:
    The work has investigated the actual mechanism of the adhesion between successive asphalt layers, taking into account the macrostructure of the pavement layers, which are made of heterogeneous materials. The interaction between the joined layers was determined by applying a cohesion contact model. The parameters of the model were identified using the results obtained in the course of the actual Leutner tests. The heterogeneity of the structure was mapped based on a digital image of a tomographic cross-section. The separation of the materials included in the individual layers was performed with the use of a script in the MatLab program. Thanks to this, the batch file for the Abaqus program was prepared thoroughly. As a result, it was possible to map as closely as possible the profile of the deformation caused by the loss of the interlayer adhesion. Based on the data analysis, it was found that in the layer of the base course constructed from cold-applied recycled materials, the loss of interlayer adhesion is related to the state of non-linear mastic deformation. As a consequence, it was found that large deformations in the mastic structure would cause losses of aggregate grains in the recycled layer. In addition, a large horizontal displacement within the layer of the base course made of recycled material is one of the likely causes of edge fractures in the road structure.
    W pracy został rozpoznany rzeczywisty mechanizm pracy połączenia między warstwami asfaltowymi uwzględniający makrostrukturę warstw nawierzchni, które są w istocie rzeczy materiałami niejednorodnymi. Interakcję pomiędzy łączonymi warstwami określono poprzez zastosowanie modelu kohezyjnego. Jego parametry zostały zidentyfikowane przy wykorzystaniu wyników pochodzących z rzeczywistych badań Leutnera. Niejednorodność struktury odwzorowano na podstawie cyfrowego obrazu przekroju tomograficznego. Separacja materiałów wchodzących w skład poszczególnych warstw została wykonana z wykorzystaniem skryptu w programie MatLab. Dzięki temu w sposób kompleksowy został przygotowany plik wsadowy do programu Abaqus. W rezultacie udało się odwzorować możliwie najwierniej stan odkształcenia, jaki powstaje w wyniku utraty sczepności międzywarstwowej. Na podstawie analizy danych stwierdzono, że w warstwie recyklowanej podbudowy w technologii na zimno utrata sczepności międzywarstwowej jest sprzężona z nieliniowym stanem odkształcenia w mastyksie. W konsekwencji stwierdzono, że duże odkształcenia w mastyksie spowodują w warstwie recyklowanej ubytki ziarn kruszywa. Ponadto duże przemieszczenia poziome w warstwie recyklowanej podbudowy są jedną z prawdopodobnych przyczyn odłamania krawędzi w konstrukcji drogi.
    Źródło:
    Structure and Environment; 2021, 13, 4; 95--103
    2081-1500
    Pojawia się w:
    Structure and Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Torsional strength tests of spline connections made of polymer materials
    Badania wytrzymałości na skręcanie połączeń wielowypustowych wykonanych z materiałów polimerowych
    Autorzy:
    Oleksy, Mariusz
    Oliwa, Rafał
    Bulanda, Katarzyna
    Budzik, Grzegorz
    Przeszłowski, Łukasz
    Magniszewski, Marek
    Paszkiewicz, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/1789747.pdf
    Data publikacji:
    2021
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
    Tematy:
    torsion testing of polymeric materials
    splined connections made of polymeric materials
    incrementally produced machine elements
    3D printing
    badania skręcania materiałów polimerowych
    połączenia wielowypustowe z materiałów polimerowych
    elementy maszyn wytwarzane przyrostowo
    druk 3D
    Opis:
    This work is a continuation of the publication [1], in which the torsional strength tests of samples made of polymer materials, loaded with torsional moment, which more and more often can be made with the use of incremental technologies, were carried out. The designed proprietary test stand, which was described in the publication [1], was used. A series of preliminary studies on the torsion of fittings with spline connections obtained using additive techniques were carried out. It was found, that a additive technologies have a clear impact on the torsional strength of the tested machine components, including the placement of the prototype relative to the 3D printing plane or the method of processing polymer material.
    Niniejsza praca jest kontynuacją publikacji [1], w ramach której przeprowadzono badania wytrzymałości na skręcanie próbek wykonanych z materiałów polimerowych obciążonych momentem skręcającym, które coraz częściej są wytwarzane z zastosowaniem technologii przyrostowych. Wykorzystano zaprojektowane do badań autorskie stanowisko badawcze opisane w publikacji [1]. Przeprowadzono serię badań wstępnych skręcania kształtek połączeń wielowypustowych otrzymanych przy użyciu technik addytywnych. Stwierdzono wyraźny wpływ zastosowanej technologii przyrostowej na wytrzymałość na skręcanie badanych elementów maszyn, w tym ułożenia prototypu względem płaszczyzny druku 3D i sposobu przetwarzania materiału polimerowego.
    Źródło:
    Polimery; 2021, 66, 1; 52--55
    0032-2725
    Pojawia się w:
    Polimery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Postoperative pain relief in general surgery – recommendations of the Association of Polish Surgeons, Polish Society of Anaesthesiology and Intensive Therapy, Polish Association for the Study of Pain and Polish Association of Regional Anaesthesia and Pain Treatment
    Autorzy:
    Wordliczek, Jerzy
    Zajączkowska, Renata
    Dziki, Adam
    Jackowski, Marek
    Richter, Piotr
    Woroń, Jarosław
    Misiołek, Hanna
    Dobrogowski, Jan
    Paśnik, Krzysztof
    Wallner, Grzegorz
    Malec-Milewska, Małgorzata
    Powiązania:
    https://bibliotekanauki.pl/articles/1392367.pdf
    Data publikacji:
    2019
    Wydawca:
    Index Copernicus International
    Tematy:
    recommendations
    pain
    pain treatment
    pharmacotherapy
    general surgery
    perioperative procedures
    Opis:
    It is estimated that there are over 310 million surgeries performed in the world every year. Appropriate analgesic management in the perioperative period constitutes a fundamental right of every patient, significantly reducing the number of postoperative complications and the time and costs of hospitalization, particularly in the high-risk group of patients (ASA III-V) subject to extensive surgical procedures and hospitalized in intensive care units. Despite such significant arguments speaking for the conduct of effective analgesia in the perioperative period, nearly 79% of patients operated in hospitalization settings and 71% of patients operated in outpatient settings (so-called first day surgery) experienced postoperative pain of moderate, strong or extreme intensity. Hence, effective relief of postoperative pain should constitute one of the priorities of integrated, modern perioperative management, the components of which apart from adequate analgesia involve early nutrition through the alimentary canal, early patient activation and active physiotherapy. In the currently published “Guidelines”, a team of authors has updated the previous “Recommendations” primarily in terms of methods for optimizing postoperative pain relief and new techniques and drugs introduced for postoperative pain therapy in recent years. The algorithms of postoperative pain management in different treatment categories were also updated.
    Źródło:
    Polish Journal of Surgery; 2019, 91, 1; 47-68
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stiffness modulus prediction against basic physical and mechanical characteristics of recycled base course with foamed bitumen and emulsified bitumen
    Prognozowanie modułu sztywności względem podstawowych cech fizycznych i mechanicznych podbudowy recyklowanej z asfaltem spienionym i emulsją asfaltową
    Autorzy:
    Mazurek, Grzegorz
    Buczyński, Przemysław
    Iwański, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/27312163.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    recykling głęboki
    asfalt spieniony
    model regresji wielorakiej
    moduł sztywności
    spoiwo mieszane
    odcinek doświadczalny
    deep recycling
    foamed bitumen
    multiple regression modelling
    stiffness modulus
    blended binder
    trial section
    Opis:
    The paper’s objective was to present the results of predicting the stiffness modulus of a recycled mix containing a blended road binder with foamed bitumen and emulsified bitumen. The Sm (acc. to IT-CY) indirect tensile test was used at temperatures of -10°C, +5°C, +13°C and +25°C. Prediction of the stiffness modulus accounted for the effect of temperature, the type of road binders, the sampling location and the type of technology selected. All effects, except temperature, were included in the model by entangling their effects through recycled base course physical and mechanical characteristics, such as indirect tensile strength, compressive strength, creep rate, air void content and moisture resistance. As a result, it was possible to determine a regression model based on multiple regression with a coefficient of determination R2 = 0.78. Temperature and compressive strength were found to have the strongest effect on the variability of stiffness modulus. However, indirect tensile strength also significantly affected the Sm characteristic. In addition, FB-RCM (foamed bitumen) recycled mixtures proved to be more favourable than EB-RCM (emulsified bitumen) mixtures as they exhibited a lower deformation rate while retaining limited stiffness.
    Mieszanki recyklowane są powszechnie wykorzystywanym materiałem do budowy podbudowy zasadniczej i pomocniczej zarówno w przebudowach jak i nowych konstrukcji drogowych. Mogą one być wykonywane w technologii asfaltu spienionego jak i również emulsji asfaltowych. Należy pamiętać, że zastosowanie materiału odpadowego lub pochodzącego z recyklingu kwalifikuje tę technologię jako rozwiązanie proekologiczne. Aplikacja spoiwa drogowego zawierającego 100% cementu jest najczęściej wykorzystywanym sposobem podnoszenia stopnia kohezji mieszanek recyklowanych. Nie mniej jednak brak poprawnie wykonanego procesu optymalizacji ilości cementu może doprowadzić do nadmiernego przesztywnienia mieszanki recyklowanej i pojawieniem się spękań. Pomimo wielu korzyści, jakie wynikają ze stosowania technologii recyklingu wciąż napotykane się ograniczenia w jej stosowaniu i popularyzacji. Główną przyczyną jest brak kompleksowej wiedzy z zakresu struktury wewnętrznej mieszanek recyklowanych oraz panujących w niej efektów reologicznych, co objawia się częstymi awariami dróg o dużym natężeniu ruchu, które zostały wykonane na podbudowie z mieszanki recyklowanej [13, 43]. W związku z tym była to jedna z przyczyn ograniczenia stosowania tej technologii w Polsce dla ruchu o natężenia pojazdów powyżej ESAL100 kN >7,3 mln osi. W związku z tym autorzy podjęli się zadania związanego z możliwością prognozowania zmiany modułu sztywności mieszanki recyklowanej, rozrzedzając swoje działania o efekty związane z: technologią recyklingu, rodzajem spoiwa oraz zjawiskami jakie mogą wystąpić w czasie realizacji odcinka doświadczalnego. W artykule zostały przedstawione rezultaty prognozowania modułu sztywności mieszanki recyklowanej zawierającej mieszane spoiwo drogowe w technologii asfaltu spienionego oraz emulsji asfaltowej. Badanie modułu sztywności wykonano metodą pośredniego rozciągania IT-CY. Moduł sztywności oznaczono w temperaturach –10°C, +5°C, +13°C oraz +25°C. Prognozowanie modułu sztywności uwzględniało efekt temperatury, rodzaj spoiw drogowego, miejsce poboru próbek oraz rodzaj technologii. Wszystkie efekty, oprócz temperatury, zostały uwzględnione w modelu poprzez uwikłanie ich oddziaływania za pomocą cech fizycznych i mechanicznych recyklowanej podbudowy takich jak: wytrzymałość na pośrednie rozciąganie, wytrzymałość na ściskanie, szybkość pełzania, zawartość wolnej przestrzeni oraz odporność na oddziaływanie wody.
    Źródło:
    Archives of Civil Engineering; 2023, 69, 3; 95--112
    1230-2945
    Pojawia się w:
    Archives of Civil Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Comparative Analysis of Prepared Mixtures of Crambe Abyssinica Seed Oil with Mineral and Synthetic Oil
    Analiza porównawcza opracowanych mieszanin oleju z nasion Crambe Abyssinica z olejem mineralnym i syntetycznym
    Autorzy:
    Drabik, Jolanta
    Kozdrach, Rafał
    Wolszczak, Marek
    Iłowska, Jolanta
    Duszyński, Grzegorz
    Piątkowski, Mariusz
    Powiązania:
    https://bibliotekanauki.pl/articles/1857783.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    vegetable oil from Crambe Abyssinica seeds
    mixture of vegetable and mineral oil
    mixture of vegetable and synthetic oil
    oxidation stability
    antiwear properties
    Raman spectrum analysis
    thermal extortions
    mechanical extortions
    olej roślinny z nasion Crambe Abyssinica
    mieszanina oleju roślinnego z mineralnym
    mieszanina oleju roślinnego z syntetycznym
    stabilność oksydacyjna
    właściwości przeciwzużyciowe
    spektroskopia Ramana
    Opis:
    The base oils must meet the high technical and ecological requirements for the raw materials used in the production of lubricants. The relevant useful properties can be obtained by mixing the vegetable oil with mineral or synthetic oil. The paper presents the results of tests of mixtures of oil obtained from Crambe Abyssinica seeds with mineral and synthetic oil. A variation of tested mixtures with regard to thermo-oxidative stability and antiwear properties were found. The mixtures with the most favourable properties were recommended as a base oils during the production of ecological lubricants.
    Oleje bazowe muszą spełniać wysokie wymagania techniczne i ekologiczne stawiane surowcom wykorzystywanym do produkcji środków smarowych. Odpowiednie właściwości użytkowe można uzyskać przez mieszanie oleju roślinnego z olejem mineralnym lub syntetycznym. W pracy przedstawiono wyniki badań mieszanin oleju pozyskanego z nasion Crambe Abyssinica z olejem mineralnym i syntetycznym. Stwierdzono zróżnicowanie badanych mieszanin pod względem stabilności termooksydacyjnej i właściwości przeciwzużyciowych. Mieszaniny o najkorzystniejszych właściwościach rekomendowano jako oleje bazowe podczas wytwarzania ekologicznych środków smarowych.
    Źródło:
    Tribologia; 2020, 291, 3; 15-21
    0208-7774
    Pojawia się w:
    Tribologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    VIS camera studies of the combustion process of the pyrotechnic retarders of NGP-76 underwater fifle[!] grenades = Badania za pomocą kamery VIS procesu spalania opóźniaczy pirotechnicznych nasadkowych granatów podwodnych NGP-76
    VIS camera studies of the combustion process of the pyrotechnic retarders of NGP-76 underwater rifle grenades
    Badania za pomocą kamery VIS procesu spalania opóźniaczy pirotechnicznych nasadkowych granatów podwodnych NGP-76
    Autorzy:
    Miszczak, Maciej.
    Powiązania:
    Polish Hyperbaric Research 2022, nr 1, s. 31-41
    Współwytwórcy:
    Warchoł, Radosław. Autor
    Gędziorowski, M. P. Autor
    Piecuch, Marek. Autor
    Grzeczka, Grzegorz. Autor
    Data publikacji:
    2022
    Tematy:
    Granaty nasadkowe
    Opóźniacze palenia
    Spalanie
    Kamera wideo
    Badania naukowe
    Nurkowie
    Fala uderzeniowa
    Artykuł z czasopisma fachowego
    Opis:
    W artykule przedstawiono wyniki badań dotyczących procesu spalania wielosegmentowej, małogazowej, kolumny pirotechnicznej opóźniacza głowicy bojowej nasadkowego granatu podwodnego NGP-76. Głównym przeznaczeniem granatu jest zwalczanie nurków za pomocą podwodnej fali uderzeniowej. Do obserwacji procesu spalania, czyli momentu od zapłonu pierwszego segmentu opóźniacza do zakończenia spalania ostatniego jego segmentu wykorzystano kamerę VIS filmującą z częstotliwością 30 klatek na sekundę.
    W tytule w języku angielskim błędnie zapisane słowo „rifle”.
    Bibliografia na stronie 41.
    Dostawca treści:
    Bibliografia CBW
    Artykuł
    Tytuł:
    1000 Liver Transplantations at the Department of General, Transplant and Liver Surgery, Medical University of Warsaw - Analysis of Indications and Results
    Autorzy:
    Krawczyk, Marek
    Grąt, Michał
    Barski, Krzysztof
    Ligocka, Joanna
    Antczak, Arkadiusz
    Kornasiewicz, Oskar
    Skalski, Michał
    Patkowski, Waldemar
    Nyckowski, Paweł
    Zieniewicz, Krzysztof
    Grzelak, Ireneusz
    Pawlak, Jacek
    Alsharabi, Abdulsalam
    Wróblewski, Tadeusz
    Paluszkiewicz, Rafał
    Najnigier, Bogusław
    Dudek, Krzysztof
    Remiszewski, Piotr
    Smoter, Piotr
    Grodzicki, Mariusz
    Korba, Michał
    Kotulski, Marcin
    Cieślak, Bartosz
    Kalinowski, Piotr
    Gierej, Piotr
    Frączek, Mariusz
    Rdzanek, Łukasz
    Stankiewicz, Rafał
    Kobryń, Konrad
    Nazarewski, Łukasz
    Leonowicz, Dorota
    Urban-Lechowicz, Magdalena
    Skwarek, Anna
    Giercuszkiewicz, Dorota
    Paczkowska, Agata
    Piwowarska, Jolanta
    Gelo, Remigiusz
    Andruszkiewicz, Paweł
    Brudkowska, Anna
    Andrzejewska, Renata
    Niewiński, Grzegorz
    Kilińska, Beata
    Zarzycka, Aleksandra
    Nowak, Robert
    Kosiński, Cezary
    Korta, Teresa
    Ołdakowska-Jedynak, Urszula
    Sańko-Resmer, Joanna
    Foroncewicz, Bartosz
    Ziółkowski, Jacek
    Mucha, Krzysztof
    Senatorski, Grzegorz
    Pączek, Leszek
    Habior, Andrzej
    Lechowicz, Robert
    Polański, Sławomir
    Leowska, Elżbieta
    Pacho, Ryszard
    Andrzejewska, Małgorzata
    Rowiński, Olgierd
    Kozieł, Sławomir
    Żurakowski, Jerzy
    Ziarkiewicz-Wróblewska, Bogna
    Górnicka, Barbara
    Hevelke, Piotr
    Michałowicz, Bogdan
    Karwowski, Andrzej
    Szczerbań, Jerzy
    Powiązania:
    https://bibliotekanauki.pl/articles/1396689.pdf
    Data publikacji:
    2012-06-01
    Wydawca:
    Index Copernicus International
    Tematy:
    liver transplantation
    indications
    results
    mortality
    Opis:
    The aim of the study was to analyze indications and results of the first one thousand liver transplantations at Chair and Clinic of General, Transplantation and Liver Surgery, Medical University of Warsaw.Material and methods. Data from 1000 transplantations (944 patients) performed at Chair and Clinic of General, Transplantation and Liver Surgery between 1994 and 2011 were analyzed retrospectively. These included 943 first transplantations and 55 retransplantations and 2 re-retransplantations. Frequency of particular indications for first transplantation and retransplantations was established. Perioperative mortality was defined as death within 30 days after the transplantation. Kaplan-Meier survival analysis was used to estimate 5-year patient and graft survival.Results. The most common indications for first transplantation included: liver failure caused by hepatitis C infection (27.8%) and hepatitis B infection (18%) and alcoholic liver disease (17.7%). Early (< 6 months) and late (> 6 months) retransplantations were dominated by hepatic artery thrombosis (54.3%) and recurrence of the underlying disease (45%). Perioperative mortality rate was 8.9% for first transplantations and 34.5% for retransplantations. Five-year patient and graft survival rate was 74.3% and 71%, respectively, after first transplantations and 54.7% and 52.9%, respectively, after retransplantations.Conclusions. Development of liver transplantation program provided more than 1000 transplantations and excellent long-term results. Liver failure caused by hepatitis C and B infections remains the most common cause of liver transplantation and structure of other indications is consistent with European data.
    Źródło:
    Polish Journal of Surgery; 2012, 84, 6; 304-312
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evolution Of The Results Of 1500 Liver Transplantations Performed In The Department Of General, Transplant And Liver Surgery Medical University Of Warsaw
    Autorzy:
    Krawczyk, Marek
    Grąt, Michał
    Grąt, Karolina
    Wronka, Karolina
    Krasnodębski, Maciej
    Stypułkowski, Jan
    Masior, Łukasz
    Hołówko, Wacław
    Ligocka, Joanna
    Nyckowski, Paweł
    Wróblewski, Tadeusz
    Paluszkiewicz, Rafał
    Patkowski, Waldemar
    Zieniewicz, Krzysztof
    Pączek, Leszek
    Milkiewicz, Piotr
    Ołdakowska-Jedynak, Urszula
    Najnigier, Bogusław
    Dudek, Krzysztof
    Remiszewski, Piotr
    Grzelak, Ireneusz
    Kornasiewicz, Oskar
    Kotulski, Marcin
    Smoter, Piotr
    Grodzicki, Mariusz
    Korba, Michał
    Kalinowski, Piotr
    Skalski, Michał
    Zając, Krzysztof
    Stankiewicz, Rafał
    Przybysz, Marta
    Cieślak, Bartosz
    Nazarewski, Łukasz
    Nowosad, Małgorzata
    Kobryń, Konrad
    Wasilewicz, Michał
    Raszeja-Wyszomirska, Joanna
    Piwowarska, Jolanta
    Giercuszkiewicz, Dorota
    Sańko-Resmer, Joanna
    Rejowski, Sławomir
    Szydłowska-Jakimiuk, Monika
    Górnicka, Barbara
    Wróblewska-Ziarkiewicz, Bogna
    Mazurkiewicz, Michał
    Niewiński, Grzegorz
    Pawlak, Jacek
    Pacho, Ryszard
    Powiązania:
    https://bibliotekanauki.pl/articles/1395614.pdf
    Data publikacji:
    2015-05-01
    Wydawca:
    Index Copernicus International
    Tematy:
    liver transplantation
    survival
    outcomes
    donors
    center experience
    center volume
    Opis:
    Liver transplantation is a well-established treatment of patients with end-stage liver disease and selected liver tumors. Remarkable progress has been made over the last years concerning nearly all of its aspects. The aim of this study was to evaluate the evolution of long-term outcomes after liver transplantations performed in the Department of General, Transplant and Liver Surgery (Medical University of Warsaw). Material and methods. Data of 1500 liver transplantations performed between 1989 and 2014 were retrospectively analyzed. Transplantations were divided into 3 groups: group 1 including first 500 operations, group 2 including subsequent 500, and group 3 comprising the most recent 500. Five year overall and graft survival were set as outcome measures. Results. Increased number of transplantations performed at the site was associated with increased age of the recipients (p<0.001) and donors (p<0.001), increased rate of male recipients (p<0.001), and increased rate of piggyback operations (p<0.001), and decreased MELD (p<0.001), as well as decreased blood (p=0.006) and plasma (p<0.001) transfusions. Overall survival was 71.6% at 5 years in group 1, 74.5% at 5 years in group 2, and 85% at 2.9 years in group 3 (p=0.008). Improvement of overall survival was particularly observed for primary transplantations (p=0.004). Increased graft survival rates did not reach the level of significance (p=0.136). Conclusions. Long-term outcomes after liver transplantations performed in the Department of General, Transplant and Liver Surgery are comparable to those achieved in the largest transplant centers worldwide and are continuously improving despite increasing recipient age and wider utilization of organs procured from older donors.
    Źródło:
    Polish Journal of Surgery; 2015, 87, 5; 221-230
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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