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Tytuł:
Metallostatic pressure function in the quality of Al-Si alloy castings made in sand moulds
Rola ciśnienia metalostatycznego w kształtowaniu jakości odlewów ze stopów Al-Si wykonywanych w formach piaskowych
Autorzy:
Zych, J.
Wójcik, M.
Kolczyk, J.
Snopkiewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/263821.pdf
Data publikacji:
2014
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
aluminium casting
metallostatic pressure
density
surface roughness
odlewy aluminiowe
ciśnienie metalostatyczne
gęstość
chropowatość powierzchni
Opis:
The paper presents results of the studies regarding influence of metallostatic pressure of AlSi7Mg alloy on surface roughness of castings prepared in sand moulds as well as on alloy's density. Castings in a cylindrical shape with a diameter of 15.0; 25.0 or 3.5 mm and height of 700 mm that were cast in a vertical orientation are investigated. The melted alloy was poured into moulds in two ways: bottom up, and top down. Higher pressure and larger diameter of castings favors increase of surface roughness. In the analyzed range of height of a metal column, density increases linearly: for instance, in case of castings with diameter of 025 mm, the density increases from p = 2.60 g/cm3 to p = 2.68 g/cm3, what is about 0.10 g/cm3. In the roller with larger diameter, the density is slightly smaller, howeverthe range of changes along the longer axis is similar to that in the cylinder with diameter of 025 mm. Additional, ultrasonic studies were performed, which prove that with smali changes of the alloy density, velocity of a longitudinal wave changes only slightly.Thus, it is difficult to control smali variations (Δp < 0,10 g/cm3) in density of AISi7Mg alloy with ultrasonic technique.
W pracy przedstawiono wyniki badań wpływu ciśnienia metalostatycznego stopu AlSi7Mg na chropowatość powierzchni odlewów wykonywanych w formach piaskowych oraz na gęstość stopu. Badaniami objęto odlewy w kształcie walca o średnicach d = 15.0; 25.0 i 3.5 mm i wysokości h = 700 mm wykonywanych w pozycji pionowej. Formy zalewano na dwa sposoby: od dołu i od góry. Chropowatość powierzchni zwiększa się przy wyższych wartościach ciśnienia oraz wraz ze zwiększeniem grubości odlewów. W badanym zakresie zmian wysokości słupa metalu gęstość zwiększa się w sposób liniowy. Przykładowo dla odlewów o średnicy 025 mm gęstość rośnie od p = 2.60 g/cm3 do p = 2.68 g/cm3, o niecałe 0.10 g/cm3. W grubszym wałku gęstość jest nieco mniejsza, a zakres zmian na wysokości jest podobny jak w wałku 025 mm. Dodatkowe badania ultradźwiękowe pozwalają stwierdzić, iż przy tych niewielkich zmianach gęstości stopu, prędkość fali podłużnej zmienia się w niewielkim stopniu. Techniką ultradźwiękową trudno jest kontrolować niewielkie zmiany (Δp < 0,10 g/cm3) gęstości stopu AlSi7Mg
Źródło:
Metallurgy and Foundry Engineering; 2014, 40, 3; 191-202
1230-2325
2300-8377
Pojawia się w:
Metallurgy and Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of a diet containing beta-carotene and omega-3 fatty acids on the biochemical and nonspecific humoral immunity indicators and on the results of experimental calf rearing
Autorzy:
Zwierzchowski, G.
Micinski, J.
Pogorzelska, J.
Siwicki, A.
Wojcik, R.
Kobzhassarov, T.Z.
Bermagambetova, N.
Shaikamal, G.I.
Fijalkowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/1189818.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
animal feeding
diet
beta-carotene
omega-3 fatty acid
biochemical indicator
humoral immunity indicator
immunoglobulin
calf
rearing
Opis:
The aim of this study has been to determine the effect of a diet containing β-carotene and omega-3 fatty acids on the biochemical and nonspecific humoral immunity indicators and on the results of rearing calves to day 60 of life. The study was conducted in 2011-2012, on a herd of Polish Holstein-Friesian cows. 54 calves from the herd were divided into 3 groups, 18 animals in each: CTR, TRT1 and TRT2. During the colostral period lasting for 5 days after birth, calves were drinking the mother’s colostrum. From 6 to 60 days, calves were watered milk replacer formulation. The control group (CTR) consisted of calves after the colostral period given milk replacer formulation without any supplementation. In the two other groups, calves received milk replacers with the supplementation of b-carotene (TRT1 group) in the amount of 25 mg/calf/day or a suspension of liver omega-3 oil (TRT2 group) in the amount of 5g/calf/day. All calves received solid feed ad libitum. The research showed that the parameters of the metabolic profile of calves (ALT, ASP, CHOL, GLU, UREA, ALP, TG, CRE) were within the normal range, indicating good health of the calves. Moreover, the supplementation had a positive impact on the chosen immunological parameters, including a higher IgG concentration, especially at the end of the milk drinking period. The result of B-carotene in a diet was the highest daily gain in the period from 30 to 60 days of life among the analysed groups of calves. No such effect was achieved in the TRT2 group of calves, as their body weight was the lowest. However, noteworthy is the beneficial impact of beta-carotene and omega-3 oil on the non-specific humoral immunity parameters, which was manifested by fewer cases of clinical diarrhoea and upper respiratory tract diseases.
Źródło:
Journal of Elementology; 2016, 21, 1; 283-302
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of a diet containing beta-carotene and omega-3 fatty acids on the biochemical and nonspecific humoral immunity indicators and on the results of experimental calf rearing
Autorzy:
Zwierzchowski, G.
Micinski, J.
Pogorzelska, J.
Siwicki, A.
Wojcik, R.
Kobzhassarov, T.Z.
Bermagambetova, N.
Shaikamal, G.I.
Fijalkowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/14928.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
animal feeding
diet
beta-carotene
omega-3 fatty acid
biochemical indicator
humoral immunity indicator
immunoglobulin
calf
rearing
Opis:
The aim of this study has been to determine the effect of a diet containing β-carotene and omega-3 fatty acids on the biochemical and nonspecific humoral immunity indicators and on the results of rearing calves to day 60 of life. The study was conducted in 2011-2012, on a herd of Polish Holstein-Friesian cows. 54 calves from the herd were divided into 3 groups, 18 animals in each: CTR, TRT1 and TRT2. During the colostral period lasting for 5 days after birth, calves were drinking the mother’s colostrum. From 6 to 60 days, calves were watered milk replacer formulation. The control group (CTR) consisted of calves after the colostral period given milk replacer formulation without any supplementation. In the two other groups, calves received milk replacers with the supplementation of b-carotene (TRT1 group) in the amount of 25 mg/calf/day or a suspension of liver omega-3 oil (TRT2 group) in the amount of 5g/calf/day. All calves received solid feed ad libitum. The research showed that the parameters of the metabolic profile of calves (ALT, ASP, CHOL, GLU, UREA, ALP, TG, CRE) were within the normal range, indicating good health of the calves. Moreover, the supplementation had a positive impact on the chosen immunological parameters, including a higher IgG concentration, especially at the end of the milk drinking period. The result of B-carotene in a diet was the highest daily gain in the period from 30 to 60 days of life among the analysed groups of calves. No such effect was achieved in the TRT2 group of calves, as their body weight was the lowest. However, noteworthy is the beneficial impact of beta-carotene and omega-3 oil on the non-specific humoral immunity parameters, which was manifested by fewer cases of clinical diarrhoea and upper respiratory tract diseases.
Źródło:
Journal of Elementology; 2016, 21, 1
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The concentration of urea in hemolymph as a marker of health in Lissachatina fulica and Cornu aspersum edible snails – a preliminary study
Autorzy:
Ziętek, J.
Guz, L.
Wójcik, A.
Winiarczyk, S.
Adaszek, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/2087559.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Lissachatina fulica
Cornu aspersum
hemolymph
urea
markers
Źródło:
Polish Journal of Veterinary Sciences; 2019, 2; 259-262
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
SYMBAD : instrument in the course of aircraft flight test planning
Autorzy:
Zieja, M.
Kosiński, W.
Wójcik, J.
Powiązania:
https://bibliotekanauki.pl/articles/246155.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
aircraft
flight-test planning
flight test schedule
artificial neural networks
Opis:
Any flight test programme is essentially based on a flight test plan, i.e. a document agreed upon and accepted by all the parties interested in the tests, and authorised by the superior body/authorities responsible for the execution of the tests. The flight test plan determines the number of flights and flight hours indispensable to verify whether a given aircraft satisfies specified requirements. Many and various external factors may have significant and adverse effect on the execution of the flight test program according to the earlier agreed schedule. The identification of areas hazardous to the project is a very interesting and it depend of the experience of researchers. The flight test program in addition to the requirements for the equipment under test must take into account the available infrastructure, time and cost SYMBAD is the structure of artificial neural network (ANN) developed on the basis of experimentally gained data from the military aircraft testing. These tests were done in Aircraft Institute of Technology for the many years and for the different type of aircrafts. Potential usage of this programme for the managing of aircraft prototypes testing has been formulated as well. This case is presented in this article. Presented the program will be improved based on the knowledge of researchers. The Sindbad’s structure can be easily adjusted depending on the type of test equipment, e.g. for unmanned air systems.
Źródło:
Journal of KONES; 2013, 20, 4; 501-510
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of the effectiveness of various parasitological methods in detecting nematode eggs in different types of soil
Autorzy:
Zdybel, J.M.
Sroka, J.
Karamon, J.
Bilska-Zając, E.
Wójcik-Fatla, A.
Kłapeć, T.
Skowron, P.
Siebielec, G.
Jadczyszyn, T.
Cencek, T.
Powiązania:
https://bibliotekanauki.pl/articles/28763034.pdf
Data publikacji:
2023
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2023, 30, 3; 425-431
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Knowledge, protection behaviours and seroprevalence of Lyme borreliosis in inhabitants of Lublin Province, eastern Poland – evaluation of a prophylaxis programme
Autorzy:
Zając, V.
Sroka, J.
Wójcik-Fatla, A.
Powiązania:
https://bibliotekanauki.pl/articles/28763061.pdf
Data publikacji:
2023
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2023, 30, 3; 413-424
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study on tick-borne rickettsiae in eastern Poland. II. Serological response of occupationally exposed populations
Autorzy:
Zajac, V.
Wojcik-Fatla, A.
Cisak, E.
Sroka, J.
Sawczyn, A.
Dutkiewicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/51448.pdf
Data publikacji:
2013
Wydawca:
Instytut Medycyny Wsi
Tematy:
tick
Rickettsia
Polska
serological response
occupational exposure
population
serology
ELISA test
forestry worker
agricultural worker
Opis:
A group of 150 persons living in the Lublin province of eastern Poland and occupationally exposed to tick bite were examined by the immunoenzymatic ELISA test for the presence of antibodies against tick-borne Spotted Fever Group (SFG) rickettsiae. The group consisted of 75 forestry workers employed in 3 forest inspectorates and 75 agricultural workers living in 2 villages. As a control group, 43 urban dwellers living in the city of Lublin and not occupationally exposed to tick bite were examined. Among 150 persons occupationally exposed to tick bite, the presence of antibodies against SFG rickettsiae was found in 54 (36.0% of the total). In the control group, the frequency of positive findings was only 4.7%, being significantly smaller compared to the exposed group (p=0.0001). Within the exposed group, the percentage of positive results in forestry workers (50.7%) was greater than in agricultural workers (21.3%); the difference was statistically significant (p=0.0002). Also within this group, the frequency of positive findings in males(46.5%) was significantly greater than in females (21.9%) (p=0.0029). In the exposed group, the positive results tended to increase with the age of the examined persons. However, a significant relationship between age and positive findings was found only in forestry workers (c2=14.207, p=0.00264), but not in agricultural workers and total exposed workers. The frequencies of positive results in forestry workers varied significantly depending on place of work (c2=11.271, p=0.00357). Similarly, the difference between the positive reactions in agricultural workers living in 2 villages proved to be significant (34.2% vs. 8.1%; p=0.0074). The obtained results indicate that people occupationally exposed to tick bite and living in the area of eastern Poland where over half of Dermacentor reticulatus ticks harbour SFG rickettsiae, are under significantly increased risk of infection with these rickettsiae.
Źródło:
Annals of Agricultural and Environmental Medicine; 2013, 20, 2
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Semi-automatic test system for characterization of ASIC/MPWS
Autorzy:
Zając, J.
Wójcik, J.
Kociubiński, A.
Tomaszewski, D.
Powiązania:
https://bibliotekanauki.pl/articles/308858.pdf
Data publikacji:
2005
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
automatic testing
diagnostics of technology
multi-project wafers
Opis:
A measurement system for integrated circuit testing has been developed. It consists of a semi-automatic probe station and a set of measurement equipment controlled by commercially available measurement software. The probe station is controlled by dedicated software. Both the measurement and station-control software communicate using the DDE protocol. The measurement system is flexible. It is particularly suitable for semi-automatic testing of multi-project wafers. Output data generated by the system is used for the characterization of the CMOS technologies.
Źródło:
Journal of Telecommunications and Information Technology; 2005, 1; 124-128
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zautomatyzowany system kontroli wizyjnej tabletek i kapsułek pakowanych w przezroczyste blistry
Automated optical system for tablets and capsules packaging inspection
Autorzy:
Zając, J.
Małkiński, W.
Wójcik, J.
Karliński, M.
Powiązania:
https://bibliotekanauki.pl/articles/256633.pdf
Data publikacji:
2009
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy
Tematy:
wizja maszynowa
inspekcja optyczna
przetwarzanie obrazu
analiza obrazu
inspekcja pakowania
tabletka
kapsułka
system zarządzania jakością
machine vision
optical inspection
image processing
image analysis
tablet
capsule
packaging inspection
quality management system
Opis:
W artykule przedstawiono charakterystykę zautomatyzowanego systemu przeznaczonego do kontroli wizyjnej tabletek i kapsułek pakowanych w przezroczyste blistry. Inspekcja jakości pakowania obejmuje: wykrywanie braku tabletek w gnieździe lub ich nieprawidłowe ułożenie, wykrywanie tabletek o niewłaściwym kolorze lub wymiarach, wykrywanie zanieczyszczeń blistra oraz sprawdzenie prawidłowości oznakowania blistra. Omówiono właściwości podstawowych składników sprzętowych systemu. Zaprezentowano moduły programowe związane z projektowaniem nastaw systemu, tworzeniem nowych zadań inspekcji, a także wizualizacją przebiegu inspekcji w trybie automatycznym. Przedstawiono właściwości i parametry techniczne systemu. Opracowany system umożliwia pełną archiwizację nastaw oraz wyników inspekcji.
The system described in the paper provides automated optical inspection of tablets and capsules packed in transparent blisters. The packaging inspection includes: detection of tablets/capsules presence in nests, detection of improper position of tablets, detection of tablets which have improper color or size, detection of blister contaminations, and marking inspection of blisters. Features of basic hardware components of the system are discussed. Software modules related to projects of system settings, creation of new inspection tasks and visualization of the inspection stream in automatic mode are presented as well. Main features and technical data of the system are described. The system also assures the possibility of full archiving of the inspection settings and results.
Źródło:
Problemy Eksploatacji; 2009, 1; 197-208
1232-9312
Pojawia się w:
Problemy Eksploatacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of large concrete object geometrical model based on terrestrial laser scanning
Autorzy:
Zaczek-Peplinska, J.
Popielski, P.
Kasprzak, A.
Wójcik, P.
Powiązania:
https://bibliotekanauki.pl/articles/106781.pdf
Data publikacji:
2014
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
terrestrial laser scanning
numerical modelling
finite elements method
technical control of dam
geodetic inventory
skanowanie laserowe naziemne
modelowanie numeryczne
metoda elementów skończonych
kontrola techniczna tamy
inwentaryzacja geodezyjna
Opis:
The paper presents control periodic measurements of movements and survey of concrete dam on Dunajec River in Rożnów, Poland. Topographical survey was conducted using laser scanning technique. The goal of survey was data collection and creation of a geometrical model. Acquired cross- and horizontal sections were utilised to create a numerical model of object behaviour at various load depending of changing level of water in reservoir. Modelling was accomplished using finite elements technique. During the project an assessment was conducted to terrestrial laser scanning techniques for such type of research of large hydrotechnical objects such as gravitational water dams. Developed model can be used to define deformations and displacement prognosis.
Źródło:
Reports on Geodesy and Geoinformatics; 2014, 97; 91-102
2391-8365
2391-8152
Pojawia się w:
Reports on Geodesy and Geoinformatics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Proximate hair analysis in male and female dromedary and Bactrian camels
Podstawowa analiza okrywy włosowej wielbłądów w zalezności od ich płci i gatunku
Autorzy:
Ząbek, K.
Wójcik, S.
Dzida, J.
Miciński, J.
Powiązania:
https://bibliotekanauki.pl/articles/29433587.pdf
Data publikacji:
2022
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
camels
Bactrian camel
dromedary camel
male
female
hair
wool
hair analysis
fiber thickness
non-medullated fibers
medullated fibers
Źródło:
Acta Scientiarum Polonorum. Zootechnica; 2022, 21, 4; 31-38
1644-0714
Pojawia się w:
Acta Scientiarum Polonorum. Zootechnica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the quality of life of older people with diabetes
Autorzy:
Wróblewska, Z.
Chmielewski, J.P.
Wojciechowska, M.
Florek-Łuszczki, M.
Wójcik, T.
Hlinková, S.
Wróblewska, I.
Powiązania:
https://bibliotekanauki.pl/articles/28763038.pdf
Data publikacji:
2023
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2023, 30, 3; 505-512
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Associations between overweight and obesity and health enhancing behaviours among female nurses in Poland
Autorzy:
Woynarowska-Sołdan, M.
Panczyk, M.
Iwanow, L.
Gałązkowski, R.
Wójcik-Fatla, A.
Panasiuk, L.
Gotlib, J.
Powiązania:
https://bibliotekanauki.pl/articles/2081941.pdf
Data publikacji:
2018
Wydawca:
Instytut Medycyny Wsi
Tematy:
health behaviours
lifestyle
obesity
overweigh
nurses
Opis:
Introduction and objective. The nursing profession entails many negative factors and high risk of chronic diseases, including overweight and obesity. The aim of the study is to investigate the prevalence of overweight and obesity and health enhancing behaviours in Polish female nurses, and associations between overweight and 4 groups of such behaviours, age and shift work. Materials and method. The analysis covered data obtained through cross-sectional survey carried out in a group of 994 nurses with an average age of 43. The analysis covered answers about 29 health-enhancing behaviours divided into 4 categories (subscales): 1) nutrition, 2) physical activity, 3) sleep, rest and behaviours related to mental health, 4) preventive behaviours. They were analysed through the validated Positive Health Behaviours Scale for adults. The analysis also covered answers about avoiding drinking large amounts of alcohol in one go, not smoking, avoiding passive smoking, not abusing unprescribed drugs. Results. The prevalence of overweight and obesity was 44%. Of 29 health behaviours concerned with nutrition, physical activity, sleep, rest, and mental health, preventive behaviours, 3 were exhibited always or almost always by over a half of the nurses. Health behaviours were more common in nurses whose BMI was normal than in nurses with BMI ≥ 25.0. Age and low physical activity levels were related to overweight and obesity in nurses. Conclusions. The study revealed a high prevalence of overweight and obesity and many deficits in health behaviours. Obesity and health behaviour deficits pose risks to the health of nurses, limit their involvement in prevention and treatment of patient obesity and impact as health educators. It is essential to engage in actions for health promotion among nurses.
Źródło:
Annals of Agricultural and Environmental Medicine; 2018, 25, 4; 714-719
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spin Conductance of Nanowires with Double Coupled Quantum Dots
Autorzy:
Wołoszyn, M.
Spisak, B.
Wójcik, P.
Adamowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/1398537.pdf
Data publikacji:
2016-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
72.25.Dc
73.63.Nm
Opis:
Using the computer simulations we have studied the spin conductance of the InAs nanowire with three all-around gates that generate two coupled quantum dots in the nanowire. We have assumed that the same constant voltage is applied to the outermost (left and right) gates and investigated the effect of the varying central-gate voltage (V_{G}) and axially directed magnetic field B on the spin currents. The calculated spin-up and spin-down conductances exhibit pronounced oscillations as functions of V_{G}. In certain intervals of V_{G}, both the spin conductances oscillate in antiphase, which can be applied to the spin-filter operation.
Źródło:
Acta Physica Polonica A; 2016, 129, 1a; A-114-A-116
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł

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