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Wyświetlanie 1-15 z 587
Tytuł:
Żydzi, konwertyci, nowi chrześcijanie, marrani – dylematy wiary, tożsamości i egzystencji społeczności żydowskiej w Portugalii po przymusowej konwersji w 1497 roku
Autorzy:
a, Dominika O l i w
Powiązania:
https://bibliotekanauki.pl/articles/708140.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Źródło:
Studia Historyczne; 2012, 3
0025-1429
Pojawia się w:
Studia Historyczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Specialized multi-agent search engine model for the extended manufacturing enterprise
Autorzy:
Oosthuizen, O. L.
Ehlers, E. M.
Powiązania:
https://bibliotekanauki.pl/articles/384496.pdf
Data publikacji:
2007
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
virtual manufacturing enterprises
agent based systems
personalised web search engines
Opis:
The Internet and Internet search engines have revolutionized the way in which we search for, and integrate information into our daily lives. One of the problems with general Internet search engines is the diversity of contexts queries can assume. Therefore, the construction of context-restricted search engines designed for use within a specialized domain has been proposed (S. Lawrence, 2000). The objective of this article is to suggest a model for a collaborative, personalized meta-search agent system for the virtual manufacturing enterprise in the context of resource location and integration across scope of the extended manufacturing enterprise. The key differences between the proposed model and general search engines are (1) the ability to personalize the search task according to an individual user need, (2) the utilization of similar search sessions through partner collaboration at an information retrieval level, (3) leveraging on existing search services available on the virtual enterprise extranet and (4) autonomous behaviour through the use of intelligent agents. The perceived benefits of a such search agent system for the virtual enterprise are: (1) Enabling a consistent and uniform view of business entities through improved access to information, (2) Simplified access to operational data, (3) Effective access and retrieval of organizational model elements and (4) Improving data location and sharing between trading partners providing a platform for tighter process integration between trading partners. These benefits are critical for effective decision making in a collaborative engineering process followed by the differing entities in a virtual manufacturing organization to ultimately enable final product realization. An evaluation strategy for the COPEMSA system presented is then briefly discussed, metrics for evaluation of focused crawlers and justification for development and implementation of the search system proposed. Finally, this article concludes with remarks about the model presented and future research to be undertaken.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2007, 1, 4; 59-69
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling of heat and mass transfer in LaNi5 matrix during hydrogen absorption-desorption cycle
Autorzy:
Akanji, O. L.
Kolesnikov, A. V.
Powiązania:
https://bibliotekanauki.pl/articles/779125.pdf
Data publikacji:
2012
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
packed bed
reactor
stress
metal hydride
hydrogen
structural mechanics
heat transfer
mass transfer
Opis:
Packed bed reactors using metal hydride are attracting a lot of attention as potential hydrogen storage systems. Some operational and design variables are major constraints to obtain a proper infl ow/outfl ow of hydrogen into a metal hydride reactor. These variables include packed bed thermal conductivity, porosity, pressure and temperature distributions in the reactor during the absorption/desorption cycle. They also cause a mechanical stress induced by temperature gradient. In this paper, two dimensional models are implemented in COMSOL multiphysics to simulate the hydrogen fl ow, pressure and temperature distributions in the packed bed reactor during absorption/desorption cycle. Also, stresses in porous metal hydride induced by temperature variation in the heating/cooling cycle were evaluated. A possible effect of stress induced, porosity changes on diffusion and heating of hydrogen in both radial and axial direction in packed bed is discussed. The model consists of a system of partial differential equations (PDE) describing structural mechanics of stress, heat and mass transfer of hydrogen in the porous matrix of the packed bed reactor.
Źródło:
Polish Journal of Chemical Technology; 2012, 14, 3; 71-76
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parametric Phonon-Helicon Interaction in Centrosymmetric Crystals with Strain-Dependent Dielectric Constant
Autorzy:
Artemenko, O. L.
Sevruk, B. B.
Powiązania:
https://bibliotekanauki.pl/articles/1945729.pdf
Data publikacji:
1996-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
63.20.Kr
Opis:
The process of interaction between circularly polarized coherent transverse phonons and slow electrokinetic waves in the centrosymmetric crystal placed in a longitudinal magnetic field and possessing strong strain dependence of the dielectric constant caused by the electrostriction is considered. The cut-off system of equations for the process of nonlinear four-wave interaction in crystal with a quadratic electrostriction corresponding to direct energy conversion from helicon to acoustic wave is derived. The solution is sought for numerically in the vicinity of a synchronism point determined by the intersection of helicon and phonon dispersion curves at different values of semiconductor plasma parameters. The results show the possibility of effective phonon parametric amplification in semiconductor crystal with the electroinduced elastic anisotropy.
Źródło:
Acta Physica Polonica A; 1996, 90, 3; 531-539
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of nutrient uptake by strawberry (Fragaria x ananassa Duch.) varieties according to phenological stages
Autorzy:
Bayram, S.E.
Elmacı, Ö.L.
Powiązania:
https://bibliotekanauki.pl/articles/13079809.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2021, 20, 1; 49-59
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Misja „cywilizacyjna” czy „okupacyjna”? Aneksja Rusi Czerwonej w czasach Kazimierza III w kolonialistycznym dyskursie polskich i rusińskich historyków w habsburskiej Galicji
Autorzy:
r, Burkhard W ö l l e
Powiązania:
https://bibliotekanauki.pl/articles/702009.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Źródło:
Historyka studia metodologiczne; 2012, 42
0073-277X
Pojawia się w:
Historyka studia metodologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental determination of aerodynamic characteristics of the planes wing with the volume generators
Doświadczalne wyznaczenie charakterystyk aerodynamicznych skrzydła samolotu z generatorami wirów na krawędzi natarcia
Autorzy:
Lemko, O. L.
Molodchyk, A.
Predachenko, K.
Powiązania:
https://bibliotekanauki.pl/articles/212982.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
vortex generators
wind tunnel
angle of attack
lift-to-drag ratio
lift force
pitching moment
generatory wirów
tunel aerodynamiczny
kąt natarcia
siła nośna
Opis:
This paper is devoted to the results of studies in a wind tunnel model aircraft mounted with the vortex generators on the wing leading edge. The article presents away to improve the aerodynamic characteristics with vortex generators on the leading edge in the direct flow. It is shown that the vortex generators increase the lift force and the critical angle of attack due to the impact of large-scale vortices on the flow separation. Experimental data of studies of the wing in the wind tunnel showed rationality of use of volume generators - there usage enlarges the range of flight angles of attack and significantly increases lift-to-drag ratio.
Niniejsza praca poświęcona jest wynikom badań w tunelu aerodynamicznym modelu samolotu wyposażonemu w generatory wirów na krawędzi natarcia skrzydła. W artykule przedstawiono sposób na poprawę właściwości aerodynamicznych samolotu z generatorami wirów na krawędzi natarcia w bezpośrednim strumieniu powietrza. Wykazano, że generatory wirów prowadzą do zwiększenia siły nośnej i krytycznego kąta natarcia z powodu wpływu dużych wirów na rozdzielenie przepływu. Dane doświadczalne badania skrzydła w tunelu aerodynamicznym wykazały, racjonalność wykorzystania generatorów wirów. Wykorzystanie powiększa zakres kątów natarcia i znacznie zwiększa współczynnik siły nośnej.
Źródło:
Prace Instytutu Lotnictwa; 2016, 4 (245); 79-86
0509-6669
2300-5408
Pojawia się w:
Prace Instytutu Lotnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Le traduzioni polacche dei testi towianisti italiani: un caso di doppia traduzione oppure un caso di ritraduzione della terminologia towianista?
Autorzy:
i, M i k o ł a j S o k o ł o w s k
Powiązania:
https://bibliotekanauki.pl/articles/702260.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Źródło:
Kwartalnik Neofilologiczny; 2015, 2
0023-5911
Pojawia się w:
Kwartalnik Neofilologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Steady and unsteady analysis of NACA 0018 airfoil in vertical-axis wind turbine
Autorzy:
Rogowski, K.
Hansen, M. O. L.
Maroński, R.
Powiązania:
https://bibliotekanauki.pl/articles/279244.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
airfoil characteristics
vertical-axis wind turbine
computational fluid dynamics
Opis:
Numerical results are presented for aerodynamic unsteady and steady airfoil characteristics of the NACA 0018 airfoil of a two-dimensional vertical-axis wind turbine. A geometrical model of the Darrieus-type wind turbine and the rotor operating parameters used for numerical simulation are taken from the literature. Airfoil characteristics are investigated using the same mesh distribution around the airfoil edges and two turbulence models: the RNG k-ε and the SST Transition. Computed results for the SST Transition model are in good agreement with the experiment, especially for static airfoil characteristics.
Źródło:
Journal of Theoretical and Applied Mechanics; 2018, 56, 1; 203-212
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enhancing adsorption capacity of clay and application in dye removal from waste water
Autorzy:
Ogunmodede, O. T.
Adebayo, O. L
Ojo, A. A.
Powiązania:
https://bibliotekanauki.pl/articles/412039.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
snail shell
methylene blue
natural clay
langmuir
freundlich
temkin
Halsey and Harkins-Jura isotherm equations
Opis:
Natural clay has been considered as a potential absorbent for removing pollutants from water and waste water. Nonetheless, the effective application of clay for water treatment is limited due to small surface area and presence of net negative surface charge, leading to it low adsorption capacity. The absorption capacity was boosted via intercalation of CaO derived from snail shell (SS). The methylene blue sorption potential, PZC, and the surface area of unmodified clay sample were substantially enhanced by the intercalation process. The process of sorption of MB from solution was analyzed using five different isotherm models (Langmuir, Freundlich, Temkin, Harkins-Jura, and Halsey isotherm equations). The value of the Langmuir monolayer sorption capacity qm (mg/g) increased from 50.12 to 88.71, PZC values increased from 4.50 to 7.40, and the surface area (m2/g) value increased from 27 m2/g to 123 m2/g after the intercalation process. The experimental data were fitted into two kinetic models: Lagergren pseudo-first order and the chemisorptions pseudo-second order. It was observed that chemisorptions pseudo-second order kinetic model described the sorption process with high coefficients of determination (r2) better than pseudo first other kinetic models. The modification caused no change in the clay surficial microstructure but increased the lattice spacing of the clay framework.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 20, 1; 35-51
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Liquid Phase Production Technologies of Metal Matrix Composites (Review)
Autorzy:
Kosnikov, G. A.
Figovsky, O. L.
Eldarkhanov, A. S.
Powiązania:
https://bibliotekanauki.pl/articles/412161.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
metal matrix composites
liquidphase technologies
magnetohydrodynamic stirring
ultrasonic treatment
thixocasting
Opis:
Liquid phase production technologies of metal matrix micro- and nanostructural composites are considered. Complex using magnetohydrodynamic stirring, ultrasonic treatment of melt during liquid and liquid-solid states and thixocasting advantages are proposed.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 6; 69-77
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Densification behaviour of carob powder
Autorzy:
Akangbe, O. L.
Adamovský, R.
Blahovec, J.
Rutkowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/100953.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
food powder
strain rate
aspect ratio
deformation
Opis:
The behaviour of carob (Ceratonia siliqua L.) powder relevant to its densification at low pressure was determined given different equipment aspect ratios (0.5, 1.0 and 1.5) and varying rates of deformation (5.5, 10 and 14.5 mm min-1). The effects of both parameters were examined through the analysis of variance and trends were fitted to observed mechanical responses using standard regression technique. Both aspect ratio and the time rate of deformation had highly significant effects on the material’s response to load. Strain rate and specific power requirement were power functions of the equipment’s aspect ratio, at all rates of deformation. These findings furnish insights on mechanical response in compressed food powders which are applicable in modelling related food handling and processing systems.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2018, IV/1; 1099-1100
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measuring container port complementarity and substitutability with Automatic Identification System (AIS) Data – studying the inter-port relationships in the Oslo Fjord multi-port gateway region
Autorzy:
Schøyen, H.
Hjelmervik, K.
Wang, H.
Osen, O.L.
Powiązania:
https://bibliotekanauki.pl/articles/116687.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Automatic Identification System (AIS)
AIS Data
container port
inter-port relationships
Oslo Fjord
container feeder vessels
Norwegian Port
multi-port gateway region
Opis:
This paper considers the degree of competition among small and medium-sized container ports located in a multi-port gateway region. The level of port competition is evaluated by means of an analysis of the revealed preferences in the port-calling pattern of container feeder vessels deployed on their various links and routes. Unit of analysis is feeder vessel sailing legs and ports stays at/between adjacent container ports. At these ports’ terminals, ships are moored and loading and unloading of containers are performed. The vessel movement data is provided by the Automatic Identification System (AIS). A study of the principal container ports in the Oslo Fjord area is performed, measuring the actual container feeder traffic during the year of 2015. It is demonstrated to which extent ports in the Oslo Fjord region are acting as substitutes, and to which extent they are functioning more as a complement to each other.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2017, 11, 2; 265-270
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tissue helminthes larvae as the first xenotransplants in mammal and human evolution
Autorzy:
Bekish, O J L
Powiązania:
https://bibliotekanauki.pl/articles/840598.pdf
Data publikacji:
2001
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
Cestoda
man
mammal
Nematoda
evolution
larva
helminth
host
Trematoda
tissue
Opis:
The review aims at explaining the role of larvae of tissue helminthes in suppression of protective responses of the host during xenotransplantation. We analyse the influence of invasion in the host by larvae of tissue helminths on the development of the graft against host reaction. The role of secrets and excrets of parasites in suppression of protective responses of the host is clarified at allotransplantation. The author considers the nature of immunodepressive components generated with larvae of helminthes in preventing response of the graft against host reaction. The role of corticosteroids and eicosanoids, secreted by parasites, in suppression of immune responses of the host is estimated at allotransplantation.
Źródło:
Annals of Parasitology; 2001, 47, 4
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tissue helminthes larvae as the first xenotransplants in mammal and human evolution
Autorzy:
Bekish, O.-J. L.
Powiązania:
https://bibliotekanauki.pl/articles/2148478.pdf
Data publikacji:
2001
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
Cestoda
man
mammal
Nematoda
evolution
larva
helminth
host
Trematoda
tissue
Opis:
The review aims at explaining the role of larvae of tissue helminthes in suppression of protective responses of the host during xenotransplantation. We analyse the influence of invasion in the host by larvae of tissue helminths on the development of the graft against host reaction. The role of secrets and excrets of parasites in suppression of protective responses of the host is clarified at allotransplantation. The author considers the nature of immunodepressive components generated with larvae of helminthes in preventing response of the graft against host reaction. The role of corticosteroids and eicosanoids, secreted by parasites, in suppression of immune responses of the host is estimated at allotransplantation.
Źródło:
Wiadomości Parazytologiczne; 2001, 47, 4; 897-902
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 587

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