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Tytuł:
Selected aspects of the organization of the processes of reverse logistics of packaging waste in manufacturing enterprises
Wybrane aspekty organizacji procesów logistyki zwrotnej odpadów opakowaniowych w przedsiębiorstwie produkcyjnym
Autorzy:
Adamczak, J.
Budynek, M.
Dybikowska, A.
Iurkova, M.
Kozak, M.
Stepień, N.
Yeon Ji, H.
Powiązania:
https://bibliotekanauki.pl/articles/113694.pdf
Data publikacji:
2016
Wydawca:
STE GROUP
Tematy:
reverse logistics
packaging waste
manufacturing enterprises
logistyka zwrotna
odpady opakowaniowe
przedsiębiorstwo produkcyjne
Opis:
The paper discusses the problems of the efficiency of selected aspects of the organization of the processes of reverse logistics of packaging waste in manufacturing enterprises. On the basis of the analysis of background literature, current legal standards and strategic documents, benefits resulting from its application are shown, and legal obligations of entrepreneurs are presented.
W artykule omówiono problematykę skuteczności wybranych aspektów organizacji procesów logistyki zwrotnej odpadów opakowaniowych, w przedsiębiorstwie produkcyjnym. Na podstawie analizy piśmiennictwa, aktualnych norm prawnych i dokumentów strategicznych wykazano korzyści wynikające z jej stosowania oraz przedstawiono prawne obowiązki przedsiębiorców.
Źródło:
Systemy Wspomagania w Inżynierii Produkcji; 2016, 3 (15); 7-14
2391-9361
Pojawia się w:
Systemy Wspomagania w Inżynierii Produkcji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tibial tuberosity. Trochlear groove distance in symptom-free young subjects and the proposal for a new guideline value to evaluate patellofemoral pain syndrome in case of trochlea dysplasia
Autorzy:
Alk, A.
Bantle, V.
Martin, T.
Wang, R.
Kasprzyk, M.
Kozak, J.
Powiązania:
https://bibliotekanauki.pl/articles/2063813.pdf
Data publikacji:
2018
Wydawca:
Międzynarodowe Stowarzyszenie na rzecz Robotyki Medycznej
Tematy:
zespół bólu rzepkowo-udowego
kolano biegacza
mobilny system ultrasonograficzny oparty na smartfonie
patellofemoral pain syndrome
PFPS
TT-TG
smartphone-based mobile sonography system
Opis:
For the evaluation of the patellofemoral pain syndrome (PFPS) the mediolateral distance between the tibial tuberosity and the trochlear groove (TT-TG) is considered as the gold standard. In this work, we propose to replace the measurement of the TT-TG with conventional tomographic or radiological section images by a smartphone-based mobile sonography system. This new system allows to provide not only ultrasound imaging but also a measuring method for determining the TT-TG using a smartphone as a mobile tracking unit. Moreover, the system supports the diagnosis by acquiring an additional parameter: the mediolateral distance between the intercondylar notch and the tibial tuberosity (TT-IN). The distinctive structure of the intercondylar notch simplifies the examination compared to using the trochlear groove alone. A feasibility study conducted for this paper indicates that this second guideline value is an adequate replacement for the conventional measurement of the TT-TG. Especially in case of trochlea dysplasia the detection and definition of the groove may be difficult and the TT-IN value offers a reasonable alternative. Our study shows that the proposed sonography system is able to accurately determine the TT-TG in a population of symptom-free young subjects. These measurements range from 13.1 ± 4.2 mm for male to 14.8 ± 3.4 mm for female subjects. Our findings correspond to the postulated values of the gold standard. We are able to show that the values for the TT-IN are in a comparable range with 14.4 ± 4.1mm for men and 13.6 ± 4.0 mm for women. We are convinced that this study strongly indicates that the TT-IN is a useful value that is easy to measure with a mobile ultrasound-based measurement system and can provide the same level of diagnostic value compared to the gold standard TT-TG. In conclusion, a new guideline value is presented to complement the measurement of the TT-TG when a pathological anatomy prevents the detection of the groove.
Źródło:
Medical Robotics Reports; 2018, 7; 26--30
2299-7407
Pojawia się w:
Medical Robotics Reports
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wielopłaszczyznowa opieka nad dzieckiem z mózgowym porażeniem dziecięcym
Multi-level care of a child with cerebral palsy
Autorzy:
Andruszczak, B.
Buraczynska-Andrzejewska, B.
Krauss, H.
Krzywicka, A.
Kozak, M.
Jonczyk-Potoczna, K.
Piatek, J.
Zukiewicz-Sobczak, W.
Krasowska, E.
Powiązania:
https://bibliotekanauki.pl/articles/4279.pdf
Data publikacji:
2012
Wydawca:
Instytut Medycyny Wsi
Źródło:
Medycyna Ogólna i Nauki o Zdrowiu; 2012, 18(47), 4
2083-4543
Pojawia się w:
Medycyna Ogólna i Nauki o Zdrowiu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on deformations of laser-welded joint of a steel sandwich structure model
Autorzy:
Boroński, D.
Kozak, J.
Powiązania:
https://bibliotekanauki.pl/articles/259411.pdf
Data publikacji:
2004
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
laser welding
laboratorytests of structural elements
laser interferometry
Opis:
Problems of the behaviour of all-steel, laser welded sandwich panels in plate-to-web contact zone are presented. Results of laboratory tests on determination of deformation field around laser weld under bending load - obtained by laser interferometry technique - are shown. Analysis of strain field distribution is included and same conclusions related to modeling of behaviour of such connection are drawn.
Źródło:
Polish Maritime Research; 2004, 2; 3-8
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Strategies of production control as tools of efficient management of production enterprises
Strategie sterowania produkcją jako narzędzia efektywnego zarządzania przedsiębiorstwem produkcyjnym
Autorzy:
Budynek, M.
Celińska, E.
Dybikowska, A.
Kozak, M.
Ratajczak, J.
Urban, J.
Materene, K.
Powiązania:
https://bibliotekanauki.pl/articles/1205720.pdf
Data publikacji:
2016
Wydawca:
STE GROUP
Tematy:
JIT
KANBAN
MRP
production companies
production control strategies
przedsiębiorstwa produkcyjne
strategie sterowania produkcją
Opis:
The paper discusses the problem of principle methods of production control as a strategy supporting the production system and stimulating efficient solutions in respect management in production enterprises. The article describes MRP, ERP, JIT, KANBAN and TOC methods and focuses on their main goals, principles of functioning as well as benefits resulting from their application. The methods represent two diverse strategies of production control, i.e. pull and push strategies. Push strategies are used when the plans apply to the first and principle part of production and are based on the demand forecasts. Pull strategies are used when all planning decisions apply to the final stage and depend on the actual demand or orders from customers.
Artykuł podejmuje tematykę podstawowych metod sterowania produkcją jako strategii wspomagających system produkcyjny oraz stymulujących efektywne rozwiązania w zakresie zarządzania w przedsiębiorstwach produkcyjnych. Artykuł opisuje metody MRP, ERP, JIT, KANBAN oraz TOC, skupiając się na ich głównych celach, zasadach funkcjonowania oraz zaletach wynikających z ich zastosowania. Metody te prezentują dwie odmienne strategie sterownia produkcją, tj. strategie typu pull oraz strategie typu push. Strategie typu push używane są wtedy, kiedy plany dotyczą pierwszej, bazowej części produkcji i oparte są na prognozach popytu. Strategie typu pull, wykorzystywane są natomiast wtedy, kiedy wszelkie decyzje planistyczne dotyczą części końcowej i są podporządkowane realnemu popytowi, czyli zależą od rzeczywistych zamówień klientów.
Źródło:
Management Systems in Production Engineering; 2016, 1 (21); 20-24
2299-0461
Pojawia się w:
Management Systems in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nitrate reductase activity (NRA) in the invasive alien Fallopia japonica: seasonal variation, differences among habitats types, and comparison with native species
Autorzy:
Chmura, D.
Krywult, M.
Kozak, J.L.
Powiązania:
https://bibliotekanauki.pl/articles/56983.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Botaniczne
Opis:
Nitrate reductase activity (NRA) was studied in the invasive alien plant F. japonica (Japanese knotweed) during the vegetation season and among natural, semi-natural, and human-made habitats and compared with NRA in selected native species. NRA was measured directly in the field from the beginning of May until the beginning of October. NRA was much higher than in the plant’s native range, i.e., East Asia, and showed a high degree of variation over time with the highest values being reached at the stage of fast vegetative growth and at the beginning of fruiting. NRA was highest on dumping sites probably due to the high nitrogen input into soils and near traffic and the emission of NOx by vehicles. A comparison of the enzyme activity in four selected native plant species indicated that NRA in F. japonica was the highest with the exception of Urtica dioica, which exhibited a similar activity of the enzyme. A detailed comparison with this species showed that differences between these species on particular dates were influenced by differences in the phenology of both plants. The initial results that were obtained suggest that nitrogen pollution in an environment can contribute to habitat invasibility and a high level of NRA, which in addition to the many plant traits that are commonly accepted as characteristic of invasiveness features, may be an important factor that enhances invasion success.
Źródło:
Acta Societatis Botanicorum Poloniae; 2016, 85, 3
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Different soybean plant arrangements affect ground beetle assemblages
Autorzy:
Cierpisz, M.
Twardowski, J.
Gruss, I.
Kozak, M.
Powiązania:
https://bibliotekanauki.pl/articles/2084814.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Carabidae
ground beetles
plant density
soybean
Opis:
It was expected that there would be a relationship between plant density and arrangement within soybean plantations and ground beetles due to changes of abiotic habitat conditions. The aim of this study was to determinate the effect of different plant arrangements of soybean plants on the abundance and species diversity of ground beetles (Coleoptera, Carabidae). The studies were conducted from 2015 to 2017 at the Experimental Research Station, Wrocław, Poland. The occurrence of beetles was examined on soybeans, growing in four different treatments: row spacing of 15 cm or 30 cm, and seeding density of 50 or 90 seeds per m2. The experiment was conducted in a split-plot design in four replicates. Ground beetles were collected with 16 pitfall traps, with one trap in the middle part of each plot. The obtained results show that the general number of ground beetles was similar between the treatments. Some minor effects were found in species number, which was higher in the lower row spacing treatment. Only less abundant species were significantly affected. The most abundant species in all years and treatments were Pseudoophonus rufipes, Harpalus affinis, Calathus fuscipes and Pterostichus melanarius. The abundance of the above-listed common ground beetle species did not differ significantly between treatments.
Źródło:
Journal of Plant Protection Research; 2019, 59, 4; 441-450
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of plant arrangement in soybean crop on presence of more important herbivores - preliminary results
Wpływ rozmieszczenia roślin w łanie na występowanie ważniejszych fitofagów soi - badania wstępne
Autorzy:
Cierpisz, M.
Twardowski, J.
Kozak, M.
Powiązania:
https://bibliotekanauki.pl/articles/334868.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Maszyn Rolniczych
Tematy:
soybean
pests
plant
arrangement
organic farming
soja
szkodnik
rozmieszczenie
roślina
rolnictwo ekologiczne
Opis:
The aim of the study was to determinate the effect of soybean plant arrangement on the number and dynamics of the most important herbivores. Preliminary studies were carried out in 2015, at RZD Pawłowice, Poland belonging to Wrocław University of Environmental and Life Sciences. Colonization of plants by herbivores was compared for row spacing 15 and 30 cm and also for seeding rate 50 and 90 seeds per square meter. Plants were directly observed throughout the vegetation season and sweep net was also used for collecting arthropods. It has been demonstrated, that the row spacing has a significant impact on the incidence of herbivorous organisms. Thrips were most numerous group of arthropods that appeared on the soybean plants. A total of 2371 specimens were observed during collecting with entomological net and 1902 individuals during plant observations. Also great number of aphids, flea beetles and caterpillars occurred on soybean plants. Most of these pests inhabited soybean growing in the lower density.
Celem badań było określenie wpływu rozmieszczenia roślin w łanie na liczebność oraz dynamikę występowania ważniejszych fitofagów soi. Badania wstępne przeprowadzono w 2015 roku w RZD w Pawłowicach należącym do Uniwersytetu Przyrodniczego we Wrocławiu. Porównywano zasiedlenie roślin przez fitofagi przy rozstawie rzędów 15 i 30 cm oraz gęstości wysiewu 50 i 90 nasion na m2. Rośliny były obserwowane bezpośrednio przez cały okres wegetacji, a do odłowu stawonogów wykorzystano również czerpak entomologiczny. Wykazano, że rozstawa rzędów ma istotny wpływ na występowanie organizmów fitofagicznych. Najliczniejszą grupą owadów obserwowanych na roślinach soi były przylżeńce. Łącznie odnotowano 2371 osobników w odłowach za pomocą czerpaka entomologicznego oraz 2072 osobniki w trakcie obserwacji bezpośrednich roślin. Licznie na soi występowały również mszyce, pchełki oraz gąsienice motyli. Większość szkodników w większej liczbie zasiedlała soję rosnącą w mniejszej obsadzie.
Źródło:
Journal of Research and Applications in Agricultural Engineering; 2016, 61, 3; 48-52
1642-686X
2719-423X
Pojawia się w:
Journal of Research and Applications in Agricultural Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ stopnia rozdrobnienia wybranych warzyw na proces konwekcyjnego suszenia i podatność uzyskanego suszu na rozdrabnianie
The effect of size reduction of selected vegetables on the convection drying process and susceptibility the dried product to fragmentation
Autorzy:
Dziki, D.
Hassoon, W.H.
Biernacka, B.
Kozak, P.
Wojcik, J.
Powiązania:
https://bibliotekanauki.pl/articles/801443.pdf
Data publikacji:
2016
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Opis:
Celem pracy było przeanalizowanie wpływu stopnia rozdrobnienia warzyw na przebieg konwekcyjnego suszenia oraz na proces rozdrabniania suszu. Materiał badawczy stanowiły bulwy ziemniaka i korzeń marchwi. Próby przed pomiarami pocięto w plastry o średnicy 2,5 cm i grubości 3,0 mm oraz w paski o kształcie prostopadłościanów (0,30 × 0,35 × 2,5 cm). Proces suszenia prowadzono w pojedynczej warstwie, stosując temperaturę powietrza 60°C i prędkość przepływu 0,5 m⋅s⁻¹. Do redukcji wymiarów suszu wykorzystano rozdrabniacz nożowy. Stwierdzono, że w przypadku marchwi i ziemniaka zwiększenie powierzchni prób przed suszeniem średnio o 50% powodowało kilkukrotne skrócenie czasu tego procesu. Susz ziemniaczany i marchwiowy charakteryzowały się podobną podatnością na rozdrabnianie, aczkolwiek nieco niższe nakłady energii na ten proces uzyskano dla surowca w postaci pasków. Wskaźnik rozdrabniania Sokołowskiego zawierał się od 81 kJ·kg⁻¹mm⁰∙⁵ (paski marchwi) do 90 kJ·kg⁻¹mm⁰∙⁵ (plastry ziemniaka). Przeprowadzone badania wykazały, że stopień rozdrobnienia warzyw istotnie wpływa zarówno na proces suszenia, jak i na energochłonność rozdrabniania suszu.
Drying and grinding are two basic processes in food processing, where the final result is determined by either the properties of the raw material and processing parameters. The aim of the study was to analyze the influence of vegetables size reduction on the kinetics of convection drying and grinding process of dried materials. The potato tubers and carrot roots were used for investigations. Before measurements the moisture content of raw materials was evaluated and the samples were cut into slices (2.5 cm diameter and 3.0 mm thick) and strips with the shape of parallelepipeds (0.30 × 0.35 × 2.5 cm). The drying was carried out in a single layer, using an air temperature of 60°C and flow rate 0.5 m⋅s⁻¹. The Henderson and Pabis model was used for describing the drying kinetics. The dried samples were comminuted by using the laboratory knife mill. The sieving test was used to determine the size distribution of the pulverized material and the average particle size was calculated. Besides, the grinding energy indices were determined. The experiment was performed in triplicate. The obtained data was further subjected to a statistical analysis and the consequent evaluations were analyzed for a variance analysis. It was found that both in the case of carrots and potatoes increasing the area of samples before drying (approximately about 50%) decreased several times the drying period. The drying time of potatoes was shorter then drying period of carrot. Dried potatoes and carrots were characterized by similar susceptibility to fragmentation, although a slightly lower grinding energy requirements were obtained for the raw material in the form of strips. The average particle size of ground material changed from 0.340 to 0.404 mm in the case of potato and carrots strips, respectively and from 0.475 mm to 0.514 mm in the case of potato and carrot slices, respectively. Sokołowski`s grinding index ranged from 81 kJ·kg⁻¹mm⁰∙⁵ (carrot strips) to 90 kJ·kg⁻¹mm⁰∙⁵ (potato slices). The study showed that the size reduction of vegetables before drying had especially significant effect on the drying process and to a much lesser extent influenced on the grinding process of dried material.
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 2016, 585
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania właściwości reologicznych ścieków
Research on sludge rheological properties
Autorzy:
Fryźlewicz-Kozak, B.
Jamróz, J.
Pachołek, M.
Powiązania:
https://bibliotekanauki.pl/articles/2073026.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
parametry reologiczne
krzywe płynięcia
rheological parameters
flow curves
Opis:
W pracy przedstawiono analizę reologiczną osadu z oczyszczalni z okolic Krakowa. Badane osady należą do płynów nienewtonowskich, lepkoplastycznych, niebinghamowskich, posiadających granicę płynięcia. Wielkość granicy płynięcia osadów rośnie wraz ze wzrostem zawartości związków organicznych. Do opisu Teologicznych właściwości najlepszy okazał się matematyczny model Herschela-Bulkley’a, średnia wartość współczynnika korelacji wyniosła 0,993. Stała konsystencji malała ze wzrostem wartości wskaźnika płynięcia płynu.
The paper deals with rheological analysis of sludge from the waste water treatment plant situated near Cracow. Sewage sludge belongs to non-Newtonian, viscoplastic, non-Bingham fluid. The yield point value increases with the concentration of organic compounds in the sludge (expressed as organic dry solids). The Herschel-Bulkley model turned out to be the best to describe Theological properties. The average correlation coefficient was equal to 0.993. The fluid consistency index decreases with the increase of flow behaviour index.
Źródło:
Inżynieria i Aparatura Chemiczna; 2015, 2; 33--35
0368-0827
Pojawia się w:
Inżynieria i Aparatura Chemiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Radon Hazards in Relation to Elemental and Isotope Composition of the Geological Structures in the Lubelskie Voivodeship
Autorzy:
Gazda, L.
Połednik, B.
Czerwiński, J.
Kozak, K.
Mazur, J.
Grządziel, D.
Dudzińska, M.
Powiązania:
https://bibliotekanauki.pl/articles/123882.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
rocks
radon sources
emanations
radon exhalations
indoor environment
Opis:
The study involved investigation of the relationship between the radon concentrations in the ground air – and thus in the indoor air – and the geological structure of the Lubelskie Voivodeship (eastern Poland). Both passive and active methods were used for measuring the radon concentrations in coal, phosphate and chalk mines, caves, wells as well as indoor environments. The study also included elemental, uranium and lead isotope analyses of rocks. The performed research showed that Paleogene and Mesozoic sedimentary rocks rich in radionuclides are the sources of radon in the Lubelskie Voivodeship. In the case of the buildings located in proximity to such rocks, characterized by relatively high radon exhalations, radon remediation methods are recommended. Already at the designing stage of buildings, the measures which protect against the hazardous radon gas should be applied.
Źródło:
Journal of Ecological Engineering; 2018, 19, 2; 45-49
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Strefowość ekshalacji radonowych w rejonie Nałęczowa
Zone-Related Variability of Radon Exhalations in Nałęczów Region
Autorzy:
Gazda, L.
Połednik, B.
Dudzińska, M.
Kozak, K.
Mazur, J.
Powiązania:
https://bibliotekanauki.pl/articles/1818079.pdf
Data publikacji:
2016
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
radon
ekshalacje radonowe
rów tektoniczny
uzdrowisko
radon exhalation
rift fault
resort
Opis:
The studies on the radioactivity of waters in health resorts around the world have been conducted for over a hundred years. At first, they were strictly connected with the use of radioactive radon 222Rn for the purpose of treating patients. In Health Resort Nałęczów, the first studies on the content of radon in water were carried out in 1909. Encouraged by promising results, an attempt was made to expand the treatment possibilities/potential of this resort. Balneological treatment procedures were devised; however, they were not implemented in practice. In the following years, no research on the radioactivity of waters in Nałęczów was conducted. In 2005, pilot measurements of radon exhalations were carried out in the vicinity of Lublin. Their results showed no significant concentrations of radon in the air. The paper presents the results of radon studies performed in the years 2009-2011 in the water intake area of the resort and its proximity. The measurements of radon exhalations and its content in water were conducted. The former were carried out using the CR-39 passive dosimeters at the underground level, above the aquifer. Measurements of radon concentrations in soil air and water were performed in selected locations. In the areas in which abnormally high radon exhalations were detected, additional measurements were made using active methods by means of an Alpha GUARD PQ 2000 PRO meter. The performed studies enabled to determine the background exhalation values as 42-190 Bq/3. According to the contemporary knowledge, these values correspond to the concentrations detected in other regions of Lubelskie Voivodeship and the strip of Polish low- and highlands. In the water intake area of the resort, as well as selected parts of Bystra river valley and the Kocianow rift fault, the radon concentrations of 1130-4535 Bq/3 were detected. Such high concentrations should be considered abnormally high, and have not been previously noted in the Lubelskie Voivodeship. These concentrations are comparable to the ones in Sudety mountains and certain parts of Carpathian Mountains. Radon exhalations in the underground mining excavation measured with active method in open crevices and cracks of paleogene rocks reached the value as high as 14110 Bq/3. Locally, water in the zones of elevated radon exhalation levels (except for the resort) can be considered as radon-poor. Zone-related variability of radon exhalations connected with the local tectonic, lithological, and hydrogeochemical conditions of rock mass in this part of Lublin Upland, was determined in the paper. Most probably, the source of radon constitutes glauconite layers with phosphorites from the borderline of Cretaceous and Paleogene. The transportation of radon to the ground level and building cellars is induced and directed by the local tectonics, cracks in rock mass and the flow of water within. Significant difference in the 222Rn-saturation level of iron springs and normally-mineralized waters in similar hydrodynamic conditions, is an interesting phenomenon. Determining a possible influence of ferric ions on the emanation coefficient requires further research, especially as this issue has not been previously investigated. Another important problem is the detection of radon concentrations (over 200 Bq/3) in the existing and designed objects in Nałęczów and its vicinity. Repeating the research on the prospective balneological use of radon in Health Resort Nałęczów – which was conducted a hundred years ago – seems justified as well.
Źródło:
Rocznik Ochrona Środowiska; 2016, Tom 18, cz. 2; 828-837
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design methodology for small passenger ships on the example of the ferryboat Motława 2 driven by hybrid propulsion system
Autorzy:
Gełesz, P.
Karczewski, A.
Kozak, J.
Litwin, W.
Piątek, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/259617.pdf
Data publikacji:
2017
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
small passenger ships
urban ship
design methodology
hybrid propulsion system
Opis:
Dynamic development in practically all fields of science and engineering has not passed over shipbuilding . In last years, engineers got to their use computer software which makes it possible to perform strength and hydrodynamic calculations as well as to visualize design projects in 3 D space [1-4]. At their disposal they have full spectrum of modern solutions associated with the use of advanced materials and technologies [5-7]. More and more attention is also paid to impact onto the natural environment [8,9]. Every new object must influence the environment as low as possible, beginning from building phase through its service life up to final utilization – such approach is called „green-shipping”. However , not only practical reasons are important . Clients , i.e. ship owners and passengers of ships paid more and more attention to image of floating units. During decision taking on that from whom a transport service has to be ordered , the most modern ships of an attractive image matching with place and time, are often taken into consideration. Such situation has become a basis for an idea of working out a concept of a new ferryboat for National Maritime Museum. As the ferry has to navigate in „the heart of the town”, then , apart from strictly marine and engineering aspects , an important factor of its designing is its expected image - a set of significant meanings and emotions written in architecture language. The new ferryboat , like its historical predecessors , will never leave urban water routes.
Źródło:
Polish Maritime Research; 2017, S 1; 67-73
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of air conditioning changes on the effective dose due to radon and its short-lived decay products
Autorzy:
Grządziel, A.
Kozak, K.
Mazur, J.
Połednik, B.
Dudzińska, M. R.
Bilska, I.
Powiązania:
https://bibliotekanauki.pl/articles/147303.pdf
Data publikacji:
2016
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
radon
radon progeny
attached fraction of radon progeny
unattached fraction of radon progeny
dose conversion factor
Opis:
Most people spend the majority of their time in indoor environments where the level of harmful pollutants is often significantly higher than outdoors. Radon (222Rn) and its decay products are the example of radioactive pollutants. These radioisotopes are the main source of ionizing radiation in non-industrial buildings. The aim of the study was to determine the impact of air-conditioning system on radon and its progeny concentrations and thus on the effective dose. The measurements were carried out in the auditorium at the Environmental Engineering Faculty (Lublin University of Technology, Poland). Measurements of radon and its progeny (in attached and unattached fractions) as well as measurements of the following indoor air parameters were performed in two air-conditioning (AC) operation modes: AC ON and AC ON/OFF. The air supply rate and air recirculation were taken into consideration. The separation of radon progeny into attached and unattached fractions allowed for determining, respectively, the dose conversion factor (DCF) and the inhalation dose for teachers and students in the auditorium. A considerable increase of the mean radon progeny concentrations from 1.2 Bq/m3 to 5.0 Bq/m3 was observed in the AC ON/OFF mode compared to the AC ON mode. This also resulted in the increase of the inhalation dose from 0.005 mSv/y to 0.016 mSv/y (for 200 h/year). Furthermore, the change of the air recirculation rate from 0% to 80% resulted in a decrease of the mean radon concentration from 30 Bq/m3 to 12 Bq/m3 and the reduction of the mean radon progeny concentration from 1.4 Bq/m3 to 0.8 Bq/m3. This resulted in the reduction of the inhalation dose from 0.006 mSv/y to 0.003 mSv/y.
Źródło:
Nukleonika; 2016, 61, 3; 239-244
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 110

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