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    Wyświetlanie 1-14 z 14
    Tytuł:
    Analiza wpływu zewnętrznego pola magnetycznego na zmianę właściwości magnetycznych stopu Co-Cr-Ni
    The analysis of influence of magnetic field on change of magnetic properties of Co-Cr-Ni alloy
    Autorzy:
    Błaszczak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/395465.pdf
    Data publikacji:
    2011
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    biomateriały
    stopy kobaltu
    właściwości magnetyczne
    biomaterials
    melts of cobalt
    magnetic proprieties
    Opis:
    W części analitycznej artykułu przedstawiono podstawy teoretyczne wyjaśniające wpływ budowy wewnętrznej biomateriałów na bazie kobaltu na zmianę własności magnetycznych. Szczególny nacisk położono na analizę struktury domenowej jako cechy mającej istotny wpływ na zachowanie się biomateriałów w silnym zewnętrznym polu magnetycznym. W części badawczej przedstawiono wyniki pomiarów koercji z których wynika że materiał ten znajduje się na pograniczu diamagnetyzmu i paramagnetyzmu.
    Theoretical basis explaining the influence of internal structure of biomaterials based on cobalt on the change of magnetic properties were introduced in the analytic part of the article. The special emphasis was placed on the analysis of the domain structure as the attribute essentially influencing the behavior of biomaterials in strong external magnetic field. The results of the measurements of coercive force, Curi temperature and magnetic susceptibility which prove that the investigated material can be placed on the borderland between diamagnetism and paramagnetism were presented in research part of paper.
    Źródło:
    Postępy Nauki i Techniki; 2011, 10; 49-60
    2080-4075
    Pojawia się w:
    Postępy Nauki i Techniki
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Oral hygiene in children suffering from acute lymphoblastic leukemia living in rural and urban regions
    Autorzy:
    Pels, E.
    Mielnik-Blaszczak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/49515.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Medycyny Wsi
    Opis:
    Introduction and objective. During acute lymphoblastic leukemia treatment, oral mucositis is a hugely important dental problem. In order to lower the risk of such complications, patients should take special care of their oral hygiene. The aim of this study was to assess the oral hygiene status in children with ALL during anti-cancer treatment protocols. Materials and methods. 78 children with ALL who were examined in 3 stages, and 78 generally healthy children, who constituted the control group, participated in the study. In the group of patients were 55 children from the rural environment and 23 children living in towns. Oral hygiene status was assessed with the use of the Oral Hygiene Simplified Index, Plaque Index, and Gingival Index. Results. The average value of OHI-S index in children with ALL before the chemotherapy was 0.64 ± 0.85, the value of the Pl.I index was 0.59 ± 0.74, GI index value was 0.08 ± 0.34. In the period from 0.5 – 1.5 years, the anti-cancer therapy value indicators of oral hygiene in children with ALL developed as follows: OHI-S – 0.49 ± 0.69, Pl.I – 0.49 ± 0.67, GI – 0.02 ± 0.13. Conclusions. Oral hygiene was significantly better in children with ALL than in children in the control group. The better condition of oral hygiene in children with ALL than children in the control group is the result of the oral hygiene regime that the children were following during cancer treatment protocols. Significantly higher GI in children with ALL, compared to children from the control group, was observed despite the better oral hygiene.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2012, 19, 3
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza parametrów złoża węgla brunatnego dla potrzeb projektowania elektrowni
    Analysis of lignite deposit parameters for the purpose of a planned power plant
    Autorzy:
    Naworyta, W.
    Wasilewska-Błaszczak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/282915.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
    Tematy:
    analiza złoża
    węgiel brunatny
    parametry węgla brunatnego
    elektrownia
    deposit analysis
    lignite
    deposit parameters
    power plant
    Opis:
    Elektrownie produkujące energię opierającą się na węgielu brunatnym są ściśle związane z miejscem pozyskania surowca, czyli ze złożem.W przeciwieństwie do węgla kamiennego, węgiel brunatny w stanie surowym, ze względu na swoje właściwości, nie nadaje się do transportu na większe odległości. Budowane przy złożach elektrownie bazujące na tym surowcu muszą być dostosowane do właściwości dostępnej w pobliżu kopaliny. W artykule przedstawiono analizę jednego ze złóż węgla brunatnego pod kątem parametrów technologicznych projektowanej elektrowni. Do analiz wytypowano trzy parametry węgla: popielność Ad [%], wartość opałową Qir [kJ/kg] oraz zawartość siarki całkowitej w węglu Std [%]. Na podstawie informacji z dokumentacji geologicznej oraz projektu zagospodarowania złoża określono statystykę parametrów jakościowych węgla w złożu w funkcji postępu projektowanej eksploatacji. Oprócz wartości średnich przedstawiono wielkości możliwych błędów oszacowań wynikających ze zmienności złoża ale również z niedoskonałej informacji o złożu.
    Power plants producing energy from lignite are tied to the locations of lignite extraction – to lignite deposits. Unlike hard coal, raw lignite, because of its properties and water content, cannot be transported over long distances. Therefore, power plants built in the neighborhood of a deposit have to be adjusted to the properties of the lignite in the deposit. This article analyzes the parameters of a lignite deposit for the purpose of considering a new power plant. Three lignite parameters were selected – ash content Ad [%], calorific value Qir [kJ/kg], and sulfur content Std [%]. Based on the information from geological documentation and the lignite deposit development project, the analysis calculates relevant statistics of these lignite deposit parameters, taking into account the progress of the planned exploitation. The mean values as well as the standard deviation of the mean values are presented.
    Źródło:
    Polityka Energetyczna; 2014, 17, 4; 127-136
    1429-6675
    Pojawia się w:
    Polityka Energetyczna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Andersen-Tawil syndrome (ATS) - case report and literature review
    Autorzy:
    Olszewska, K.
    Blaszczak, J.
    Mielnik-Blaszczak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/3664.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    Andersen-Tawil syndrome
    dysmorphic feature
    craniofacial complex
    genetic disorder
    KCNJ2 gene
    mutation
    Opis:
    Andersen-Tawil Syndrome (ATS) is a rare genetic disorder inherited in an autosomal dominant pattern caused by mutations in the KCNJ2 gene encoding Kir2.1 protein forming potassium ion channel, leading to disruption of cardiac and skeletal muscle repolarisation. Clinical symptoms include periodic paralysis, ventricular arrhythmia associated with QT prolongation and typical skeletal and facial dysmorphic features. The aim of the study was to present characteristic features of the rare Andersen-Tawil syndrome (ATS) within the face and oral cavity of a 9-year-old boy. The patient was diagnosed with Andersen-Tawil syndrome (OMIM#170390) at the age of 8 due to the positive family history, typical dysmorphic features, and the presence of mutation in the KCNJ2 gene confirmed by genetic testing. Typical manifestations of ATS were diagnosed: cardiac arrhythmia, short stature, scoliosis and clinodactyly. Clinical examination revealed typical facial dysmorphic features of ATS: broad forehead, triangular shape of the face, hypertelorism, microstomia, low-set ears, and mandibular retrognathism. Intraoral examination revealed: high-arched palate, crowding in the dental arches, hypomineralisation of enamel and high incidence of dental caries. Dental age assessment by Demirijan pointed to delayed development of permanent dentition. Cephalometric analysis revealed skeletal class II with high angle vertical jaws relation. Diagnosis of ATS requires high index of suspicion because of a great variability in the clinical manifestation of the syndrome. The subtle nature of the dysmorphic features often delays the diagnosis of this syndrome, and its potentially lethal cardiac arrhythmia remaining undetected.
    Źródło:
    Journal of Pre-Clinical and Clinical Research; 2014, 08, 2
    1898-2395
    Pojawia się w:
    Journal of Pre-Clinical and Clinical Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The pattern of seed banks during secondary succession on poor soils
    Autorzy:
    Kwiatkowska-Falinska, A.
    Jankowska-Blaszczak, M.
    Wodkiewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/58044.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    seed bank
    secondary succession
    poor soil
    fallow
    Calluna vulgaris
    fresh coniferous forest
    initial stage
    psammophilous species
    persistence
    Opis:
    Studies on the soil seed banks of fallow lands of different ages were carried out on poor soil abandoned fields and in a fresh coniferous forest in north-eastern Poland. The size and diversity of seed banks was studied with the seedling emergence method. Species abundance (i), density (ii), number of species from different biological groups (iii) and distribution and mean LI value (iv) were analysed as the function of fallow land age. It was found that: (i) species diversity, number of species and ln of density are linear declining function of the fallow land age; (ii) for approx. 25 years the share of diaspores of identified species groups has been relatively similar. Seed banks of 40-50-year-old fallow lands are dominated by Calluna vulgaris, while the seed bank of the old fresh coniferous forest is dominated by dicotyledonous perennials and grasses; (iii) within the first 50 years of succession the persistence of seed banks measured by the Longevity Index increases gradually.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2011, 80, 4
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Life style and risk of development of dental caries in a population of adolescents
    Autorzy:
    Krawczyk, D.
    Blaszczak, J.
    Borowicz, J.
    Mielnik-Blaszczak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/49992.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Medycyny Wsi
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2014, 21, 3
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Entamoeba gingivalis - prevalence and correlation with dental caries in children from rural and urban regions of Lublin province, Eastern Poland
    Autorzy:
    Mielnik-Błaszczak, M.
    Rzymowska, J.
    Michałowski, A.
    Skawińska-Bednarczyk, A.
    Błaszczak, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2081940.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    children
    dental caries
    Entamoeba gingivalis
    Opis:
    Introduction. Entamoeba gingivalis, as the name implies. typically lives around the gumline of the teeth in the tartar and gingival pockets of the oral cavity. Pathogenicity of protozoa in the oral cavity is not completely understood. The occurrence in patients with a good state of the immune system usually does not cause any pathological changes. In the presentede survey, an increased incidence of Entamoeba gingivalis in conjunction with pathological changes in the oral cavity was found. Objectives. The aim of the study was to evaluate the prevalence of Entamoeba gingivalis in children treated in Department of Paediatric Dentistry of the Medical University in Lublin and its correlation with dental caries. Materials and method. Diagnostic materials in the form of swabs were obtained from 154 children in the age 2–18 years old, treated in the Department of Paediatric Dentistry of the Medical University in Lublin. The main index for epidemiological surveys in oral health – DMFT (decayed, missed, and filled teeth) for permanent teeth and DMFT for deciduous teeth was calculated. Results. The average number of Entamoeba gingivalis in urban children was 12.84. The DMFT number in the deciduous teeth was lower in urban patients (5.0) than from rural patients (5.4). The DMFT number in the permanent teeth was lower in urban patients (3.155) than rural patients (3.98). There was no statistically significant correlation between the DMFT value and the number of Entamoeba gingivalis. Conclusions. 1) Entamoeba gingivalis occurs in the oral cavity of children. 2) In the presented survey, both DMFT and dmft indexes were high which proves high activity of dental carious. 3) There was no significant statistical correlation observed between dental caries and the presence of Entamoeba gingivalis.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2018, 25, 4; 656-658
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Smoking and the level of nicotine addiction in relation to the state of hard dental tissues in young adults
    Autorzy:
    Sikorska-Jaroszynska, M.H.J.
    Mielnik-Blaszczak, M.
    Krawczyk, D.
    Nasilowska-Barud, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/50206.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    cigarette smoking
    nicotine addiction
    nicotine level
    hard dental tissue
    young adult
    adult
    human behaviour
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2011, 18, 2
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Passive smoking as an environmental health risk factor
    Autorzy:
    Sikorska-Jaroszynska, M.H.J.
    Mielnik-Blaszczak, M.
    Krawczyk, D.
    Nasilowska-Barud, A.
    Blaszczak, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/51680.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Medycyny Wsi
    Opis:
    Initially, tobacco was considered as a decorative plant and only later began to be treated as a herb with special therapeutic properties. With time, it was found that tobacco had strong insecticidal and addictive properties. There also occurred reports about the negative influence of tobacco on human health. The World Health Organization (WHO) classifies smoking as a chronic, progressive disease which is also ‘contagious’. It is also considered to be a neurobiotic addiction. Nicotine addiction does not cause changes in the behaviour or functioning of a smoker; however, it adversely affects his or her general health status and the health status of people within their environment. Passive smoking (so-called ETS – Environmental Tobacco Smoke), which means accompanying smokers negatively influences the health of passive smokers. Environmental tobacco smoke, on the one hand, is the result of spontaneous cigarette burning and, on the other hand, the result of the side-stream of cigarette smoke, as well as the smoke exhaled by active smokers. Health personnel should clearly and convincingly present the data concerning the adverse results of smoking, as well as the dangers of exposure to environmental tobacco smoke, thereby making their patients aware that breaking their addiction will not only be beneficial for their own health, but will also protect non-smokers in their environment from the adverse effects of exposure to environmental tobacco smoke.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2012, 19, 3
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Solute-Solvent Interaction in Aqueous Solutions Studied by Optical Kerr Effect
    Autorzy:
    Błaszczak, Z.
    Farhoud, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1963257.pdf
    Data publikacji:
    1997-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.25.Lc
    42.65.An
    Opis:
    Solute-solvent interactions were studied by a method based on laser induced optical birefringence in aqueous solutions. The paper reports results of the optical Kerr constant measurements for binary liquid mixtures of aqueous solution of methanol, ethanol, n-propanol and acetone at room temperature in a wide range of concentrations. At 50% concentration of the above mentioned alcohols, the temperature dependence of the laser induced optical birefringence was also measured in the range from 283 K to 315 K. These data together with the density and refractive index were used to calculate the optical and specific Kerr constants. Moreover, these data enabled the calculation of the anisotropic factors, optical anisotropy and orientation function of the substances studied.
    Źródło:
    Acta Physica Polonica A; 1997, 91, 3; 531-541
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Performance of three turbulence models in 3D flow investigation for a 1.5-stage turbine
    Autorzy:
    Karczewski, M.
    Błaszczak, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1943250.pdf
    Data publikacji:
    2008
    Wydawca:
    Politechnika Gdańska
    Tematy:
    turbulence modeling
    numerical research
    low-pressure turbine
    Opis:
    The object of this study was to investigate the flow phenomena in a cold air turbine built at the Institute of Jet Propulsion and Turbomachinery at Aachen Technical University (IST RWTH Aachen, Germany). The said turbine had been studied previously both experimentally and numerically on an IST’s flow solver called Panta Rhei. Since that time certain improvements, computational-wise, have been implemented in the code. In order to test them, new simulation runs were conducted. The detailed studies of the measured and computed flow angles as well as a flow velocity analysis are the means for this evaluation.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2008, 12, 3-4; 185-195
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hiatal hernia as a rare cause of cardiac complications – case based review of the literature
    Autorzy:
    Krawiec, K.
    Szczasny, M.
    Kadej, A.
    Piasecka, M.
    Blaszczak, P.
    Głowniak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/28762875.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Medycyny Wsi
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2021, 28, 1
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preliminary results of lidar based studies of the aerosol vertical distribution in the lower troposphere over urban coastal areas
    Autorzy:
    Halas, M.
    Blaszczak, Z.
    Grabowski, J.
    Papayannis, A.
    Zielinski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/48171.pdf
    Data publikacji:
    2004
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    vertical profile
    aerosol
    urban area
    lidar
    troposphere
    coastal area
    Opis:
    The paper reports the results of lidar measurements performed in the lower troposphere during several measurement sessions in Athens (Greece) in 2000. For the sake of comparison, results of a similar study performed in Kołobrzeg (Poland) in 2001 are also given. These data indicate that the exhaust gases produced by motor transportation in the cities resulted in the formation of an inversion layer. The rate of convection of the inversion layer depends on the intensity of sunlight, the strength of winds and the morphology of the land. The inversion layer reaches the highest altitudes in the middle of summer, lower in early and late summer and the lowest in autumn. Over the sea the inversion layer altitude extends to several meters, but on moving inland it rises to a fewh undred meters.
    Źródło:
    Oceanologia; 2004, 46, 3
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bioelectrical activity of the pelvic floor muscles after 6-week biofeedback training in nulliparous continent women
    Autorzy:
    Chmielewska, D.
    Stania, M.
    Smykla, A.
    Kwaśna, K.
    Błaszczak, E.
    Sobota, G.
    Skrzypulec-Plinta, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/306365.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    elektromiografia
    biofeedback
    zdrowi ochotnicy
    profilaktyka
    pelvic floor
    electromyography
    healthy volunteers
    prevention
    Opis:
    Purpose: The aim of the study was to evaluate the effects of a 6-week sEMG-biofeedback-assisted pelvic floor muscle training program on pelvic floor muscle activity in young continent women. Methods: Pelvic floor muscle activity was recorded using a vaginal probe during five experimental trials. Biofeedback training was continued for 6 weeks, 3 times a week. Muscle strenghtening and endurance exercises were performed alternately. SEMG (surface electromyography) measurements were recorded on four different occasions: before training started, after the third week of training, after the sixth week of training, and one month after training ended. Results: A 6-week sEMG-biofeedback-assisted pelvic floor muscle training program significantly decreased the resting activity of the pelvic floor muscles in supine lying and standing. The ability to relax the pelvic floor muscles after a sustained 60-second contraction improved significantly after the 6-week training in both positions. SEMG-biofeedback training program did not seem to affect the activity of the pelvic floor muscles or muscle fatigue during voluntary pelvic floor muscle contractions. Conclusions: SEMG-biofeedback-assisted pelvic floor muscle training might be recommended for physiotherapists to improve the effectiveness of their relaxation techniques.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2016, 18, 3; 105-113
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-14 z 14

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