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Tytuł:
Comparative dynamic analysis of the portal cranes of type H and X
Autorzy:
Vasiljević, Rade
Powiązania:
https://bibliotekanauki.pl/articles/1839622.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
portal cranes
type H
type X
Finite Element Method
comparative dynamicanalysis
Opis:
In this paper, a comparative dynamic analysis of the portal cranes of type H and X is described. The difference of the considered cranes arises from the difference of their portals. These two types of portals have the same main geometric measurements. They differ only at the medium level in the horizontal plane. The first type of the portal on the middle level has an H-frame, while the second type has an X-frame. In this paper, dynamic parameters of the two portals have been compared. Estimation has been done to find which of the two types of portals has more favourable dynamic stability for overturn.
Źródło:
Journal of Theoretical and Applied Mechanics; 2020, 58, 4; 825-839
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tests results of new diagnostic method for WOLA marine diesel engines type H
Autorzy:
Lus, T.
Powiązania:
https://bibliotekanauki.pl/articles/245573.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
transport
maritime transport
combustion engines
diagnostics
Opis:
Results of studies that aim was to develop a diagnostic method for WOLA marine diesel engines type H are presented in this paper. These engines are high-speed type units used to drive small vessels or more often to drive ship generators. Polish Navy is operating significant number engines of this type. Motors of this type do not have indicator valves, which complicates the assessment of their technical condition in exploitation. These engines also, because of their age, are relatively poorly equipped in control and measurement devices. In the era of cost reduction in operation of marine equipment there is also tendency to reduce the cost of maintenance and repair of diesel engines. One way to avoid malfunction of the motor can be systematic monitoring of the technical condition of selected critical systems using reliable diagnostic methods. Polish Naval Academy (PNA) in Gdynia for years has been doing research on methods of diagnosing marine internal combustion engines. In recent years, a diagnostic method for high-speed diesel engines based on the analysis of envelope of vibration accelerations generated by the valve gear mechanism and fuel system of WOLA type H engines has been developed. Preliminary tests were carried out on a six-cylinder WOLA engine type 57H6Aa in the Marine Power Plant Operation Laboratory in PNA. Verification tests were conducted on twelve-cylinders WOLA engines of the same type on navy vessels. The developed method allows determine the angles of opening and closing the fuel injection valves and angles of closing intake and exhaust valves during engine operation. Using this method it could not be clearly determined opening angles of intake and exhaust valves.
Źródło:
Journal of KONES; 2013, 20, 1; 193-200
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
TiAl-based Ohmic Contacts to p-type 4H-SiC
Autorzy:
Martychowiec, Agnieszka
Kwietniewski, Norbert
Kondracka, Kinga
Werbowy, Aleksander
Sochacki, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/1844507.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ohmic contact
SiC
silicon carbide
TiAl
Opis:
This paper describes successfully formed ohmic contacts to p-type 4H-SiC based on titanium-aluminum alloys. Four different metallization structures were examined, varying in aluminum layer thickness (25, 50, 75, 100 nm) and with constant thickness of the titanium layer (50 nm). Structures were annealed within the temperature range of 800°C - 1100°C and then electrically characterized. The best electrical parameters and linear, ohmic character of contacts demonstrated structures with Al layer thickness equal or greater than that of Ti layer and annealed at temperatures of 1000°C or higher.
Źródło:
International Journal of Electronics and Telecommunications; 2021, 67, 3; 459-463
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A multiplier theorem for H-type groups
Autorzy:
Pini, Rita
Powiązania:
https://bibliotekanauki.pl/articles/1293542.pdf
Data publikacji:
1991
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Opis:
We prove an $L^p$-boundedness result for a convolution operator with rough kernel supported on a hyperplane of a group of Heisenberg type.
Źródło:
Studia Mathematica; 1991, 100, 1; 39-49
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania mössbauerowskie chondrytów zwyczajnych typu H potwierdzają stopień ich zwietrzenia określony za pomocą skali W
Mössbauer measurements of ordinary chondrites type H confirm their level of weathering determined by scale W
Autorzy:
Jakubowska, Martyna
Rzepecka, Patrycja
Duda, Przemysław
Woźniak, Marek
Gałązka-Friedman, Jolanta
Powiązania:
https://bibliotekanauki.pl/articles/1033083.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Meteorytowe
Tematy:
Carancas
Gao-Guenie meteorites
Juancheng
Mössbauer spectroscopy
weathering
Opis:
Mössbauer measurements of ordinary chondrites type H performed in room temperature are presented. Three investigated meteorites: Carancas, Juancheng and Gao-Guenie are new falls with different terrestrial history. Results of weathering in different conditions during terrestrial life are well seen in their Mössbauer spectra. The level of weathering determined by scale W is in perfect agreement with Mössbauer measurements of these three ordinary chondrites.
Źródło:
Acta Societatis Metheoriticae Polonorum; 2017, 8; 63-72
2080-5497
Pojawia się w:
Acta Societatis Metheoriticae Polonorum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania mössbauerowskie trzech chondrytów zwyczajnych typu H i trzech chondrytów zwyczajnych typu LL – wyznaczanie niepewności powierzchni spektralnych
Mössbauer studies of three ordinary chondrites type H and three ordinary chondrites type LL – uncertainty of the determination of spectral areas
Autorzy:
Jakubowska, Martyna
Buczek, Aleksandra
Gwiździel, Katarzyna
Djellouli, Adam
Nowak, Filip
Woźniak, Marek
Gałązka-Friedman, Jolanta
Karwowski, Łukasz
Duda, Przemysław
Powiązania:
https://bibliotekanauki.pl/articles/1032384.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Meteorytowe
Tematy:
Bassikounou
Buzzard Coulee
Kilabo
Mössbauer spectroscopy
NWA 4841
NWA 6287
Zag
ordinary chondrites
Opis:
Mössbauer 57Fe measurements of three ordinary chondrites type H and of three ordinary chondrites type LL were performed at room temperature. The spectral areas were fitted using the “Recoil” program (Lagarec i in. 1998). Fitting was repeated three times which allowed us to determinate the differences between the results of fits performed by different persons.
Źródło:
Acta Societatis Metheoriticae Polonorum; 2019, 10; 34-39
2080-5497
Pojawia się w:
Acta Societatis Metheoriticae Polonorum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hermite-Hadamard type inequalities for h-preinvex mappings via fractional integrals
Autorzy:
Matloka, M.
Powiązania:
https://bibliotekanauki.pl/articles/205901.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
Riemann-Liouville integral
Hermite-Hadamard type inequalities
h-preinvex function
Opis:
In this paper, we first establish the Hermite-Hadamard inequalities involving Riemann-Liouville fractional integrals for the h-preinvex function. Then, some Hermite-Hadamard type integraf inequalities for the fractional integrals are obtained.
Źródło:
Control and Cybernetics; 2015, 44, 2; 275-285
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Security management in the H-H type of the organizational structures
Autorzy:
Woźniak, J.
Zaskórski, P.
Powiązania:
https://bibliotekanauki.pl/articles/94845.pdf
Data publikacji:
2014
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
dispersed structure
H-H structure
network
security
ICT
X-engineering
cloud computing
struktura rozproszona
sieć
bezpieczeństwo
Opis:
The article is devoted to the problems of the security management for the dispersed organizational structures. The security is one of the system criteria that determine the factual value of the organization, what tends to expose the information and decision-making processes in an article. These processes determine the efficiency of modern business units and directly affect the level of the overall security of dispersed organizations. The security of an organization can be seen in various aspects ranging from the system security (general, global) through the economic security to the information security. The process nature of the relationships between the links of an dispersed structure indicates the need for the creation of the operational security. A particular role is played by the ICT as a strengthening factor for the widely understood potential of the company and its economic security in this area, e.g. in the framework of stimulating processes of a group learning, using of dispersed databases, or verifying generated knowledge in terms of the efficiency and certainty of the decision-making processes in dispersed structures. This article is a kind of an outline of the concept of the new H-H type structural solution (the hybrid of the hierarchical and heterarchical configurations), taking the criterion of an information and economic security into an account.
Źródło:
Information Systems in Management; 2014, 3, 1; 64-76
2084-5537
2544-1728
Pojawia się w:
Information Systems in Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation on the Mechanisms of Nitrogen Shallow Implantation Influence on Trap Properties of $SiO_2$/n-Type 4H-SiC Interface
Autorzy:
Król, K.
Sochacki, M.
Szmidt, J.
Powiązania:
https://bibliotekanauki.pl/articles/1363825.pdf
Data publikacji:
2014-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
73.40.Qv
68.55.ag
72.20.-i
72.25.-b
Opis:
Silicon carbide (SiC) is the only wide-bandgap semiconductor capable of forming native dielectric layer of $SiO_2$ by thermal oxidation. This unique property of SiC combined with its high thermal conductivity and high critical field makes this semiconductor material suitable for high power electronic devices. Unfortunately, the state-of-the art technology does not use the full benefits of the material, especially in the case of MOSFET transistors. This is caused by insufficient electrical parameters of $SiO_2$/SiC interface. Two-component structure of the material and its high density result in high level of interface traps reducing the surface mobility and thus increasing series resistance of the device. One of the proposed methods of reducing the trap density in SiC MOS structure is a shallow nitrogen implantation prior to oxidation. This technique is based on the observation that introducing nitrogen into the $SiO_2$/SiC system results in significant reduction of trap states density and increase of the channel effective mobility. The shallow implantation technique has been reported to be as much effective as nitric oxide annealing which is one of the most effective techniques for oxide quality improvement in case of SiC. Unlike the diffusion based techniques, like postoxidation annealing, implantation of the nitrogen prior oxidation has the possibility of nitrogen concentration control near the oxide interface during oxidation process itself. This property is important since it was shown that the improvement degree is directly proportional to amount of nitrogen built in the vicinity of $SiO_2$/SiC interface during oxidation. However, previous investigations about this technique were inconclusive about the influence of implantation parameters and process conditions on observed effects. Both improvement and deterioration of interface quality was observed by different researchers. This behavior was never explained clearly. The primary objective of this research is to analyze the impact of implantation conditions on electrical properties of $SiO_2$/SiC MOS structure. This analysis is used to evaluate a hypothetical description of physical phenomena during oxidation of shallowly implanted substrates.
Źródło:
Acta Physica Polonica A; 2014, 125, 4; 1033-1037
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nawęglanie i azotowanie próżniowe dysz wtrysku paliwa wykonanych ze stali WCL (H11)
Vaccum carburizing and vaccum nitiriding of fuel injection nozzles made of hot work tool steel (type WCL H11)
Autorzy:
Korecki, M.
Bazel, M.
Sut, M.
Kula, P.
Wołowiec, E.
Powiązania:
https://bibliotekanauki.pl/articles/109248.pdf
Data publikacji:
2014
Wydawca:
AXIS MEDIA
Tematy:
nawęglanie próżniowe
azotowanie próżniowe
dysza wtrysku paliwa
stal WCL (H11)
vaccum carburizing
vaccum nitiriding
fuel injection nozzles
steel (type WCL H11)
Opis:
Poniższy artykuł opisuje najnowsze osiągnięcia w dziedzinie obróbki cieplnej dysz wtrysku paliwa wykonanych ze stali narzędziowej do pracy na gorąco, wykorzystywanych w silnikach wysokoprężnych. W przeprowadzonym badaniu przetestowano różne techniki udoskonalania warstwy z pomocą nawęglania i azotowania próżniowego, które nadają się zwłaszcza do obróbki elementów o skomplikowanych kształtach, takich jak np. ślepy otwór. Pod rozwagę wzięto różne parametry procesowe dotyczące sekwencji procesu oraz jego temperatury i zbadano ich wpływ na mikrostrukturę, twardość i równomierność warstwy. Rozwinięto kompleksową metodę obróbki, na którą składają się procesy termochemiczne oraz hartowanie w gazie pod wysokim ciśnieniem (HPGQ) i odpuszczanie. Cały proces został przeprowadzony w jednokomorowym piecu próżniowym wyposażonym w system nawęglania (LPC) i azotowania (LPN) niskociśnieniowego oraz hartowania w gazie pod wysokim ciśnieniem.
The article describes the newest achievements in heat treatment of fuel injection nozzles made of hot work tool steel applied in diesel engines. Different methods of surface properties improvement has been used by means of vacuum carburizing and vacuum nitriding, especially suitable for elements characterized by difficult shape geometry like blind whole. Variables process parameters has been considered in terms of sequence and temperature, and their influence on surface microstructure, hardness and case uniformity. Complex technology was discovered involving thermo-chemical process supplemented by high pressure gas quenching (HPGQ) and tempering. All technological steps was performed in a single chamber vacuum furnaces equipped with LPC, LPN and HPGQ.
Źródło:
Piece Przemysłowe & Kotły; 2014, 3-4; 30-33
2082-9833
Pojawia się w:
Piece Przemysłowe & Kotły
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Marcinkiewicz type multiplier theorem for H¹ spaces on product domains
Autorzy:
Wojciechowski, Michał
Powiązania:
https://bibliotekanauki.pl/articles/1206045.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Opis:
It is proved that if $m : ℝ^d → ℂ$ satisfies a suitable integral condition of Marcinkiewicz type then m is a Fourier multiplier on the $H^1$ space on the product domain $ℝ^{d_1}×...×ℝ^{d_k}$. This implies an estimate of the norm $N(m,L^p(ℝ^d)$ of the multiplier transformation of m on $L^p(ℝ^d)$ as p→1. Precisely we get $N(m,L^p(ℝ^d))≲(p-1)^{-k}$. This bound is the best possible in general.
Źródło:
Studia Mathematica; 2000, 140, 3; 273-287
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The house is the city: resilience in Barcelona apartments plans during ’50-’60 modernism
Autorzy:
Lucchini, Marco
Urban, Gaspar Jaen I
Powiązania:
https://bibliotekanauki.pl/articles/2099218.pdf
Data publikacji:
2021
Wydawca:
Politechnika Krakowska im. Tadeusza Kościuszki. Wydział Architektury. Katedra Kształtowania Środowiska Mieszkaniowego
Tematy:
housing
Barcelona
Modernist
Catalan architecture
H-type module
mieszkania
Modernista
architektura katalońska
moduł typu H
Opis:
The paper deals with the Modernist housing design in Barcelona during ‘50s and ‘60s. In this period, the architecture culturally committed was struggling against Francoist censorship and the wild real estate development. The urban landscape is characterized by the housing design that can be considered a critical interface between the houses ground plan layout and the arrange-ment of the urban tissue at the settlement scale. The evolution of the Modernist housing design in Barcelona is the outcome of a dialectic be-tween long-lasting types as the H-model, a strong will to be modern expressed by architects as a reaction against the cultural lack of Francoism, the avant-garde heritage, namely the GATCPAC (Group of Catalan Architect and Technicians for the Promotion of Contemporary Architecture) and the research aimed to resume the traditional Barcelonese way of built-in which lays the city identity. By this point of view, we can argue that the concept of resilience in spite of its use as buzz word in the last 15 years is rooted in the history of the city: Barcelona it’s an example due to the “resistance” carried on by the modernist architects that was the background for the Renaissance of the city since the Olimpic Games onward.
Źródło:
Środowisko Mieszkaniowe; 2021, 36; 4--20
1731-2442
2543-8700
Pojawia się w:
Środowisko Mieszkaniowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative study of scaling parameters and research output of selected highly- and moderately-cited individual authors
Badanie porównawczych parametrów skalowania i dorobku badawczego wybranych wysoko i umiarkowanie cytowanych autorów
Autorzy:
Sangwal, Keshra
Powiązania:
https://bibliotekanauki.pl/articles/2086219.pdf
Data publikacji:
2022
Wydawca:
Politechnika Lubelska. Instytut Informatyki
Tematy:
citation analysis
citation distribution
coauthorship
h-type indices
Langmuir-type function
analiza cytowań
rozkład cytowań
współautorstwo
współczynniki typu h
funkcja typu Langmuira
Opis:
The real data of cumulative citations ln of selected nth paper of individual N papers published by some highly- and moderately-cited individual authors are analyzed to compare Hirsch and Hirsch-type indices h, h1, hf and hm, and cita-tion radii R and Rf from consideration of: (1) the number An of coauthors of the paper, (2) the normalization of citations ln and cumulative fraction lnf of citation of the nth paper by mean and median citations of the citations ln of all Nc cited papers, and (3) the determination of effective rank neff of the lnf citations. Analysis of the ln(n), lnf(n) and lnf(neff) data was also carried out by using a Langmuir-type function l = l0[1−Kn/(1+Kn)], where l denotes the citations ln and lnf of all cited Nc papers arranged in the decreasing order, is an effectiveness parameter, K is the so-called Langmuir con-stant, n denotes the rank n or neff of citations and l0 is the value of l when n or neff approaches zero. For a comparison of the publication output of different authors it was found that the hm index is more consistent than other indices, and it can be normalized to account for the publication career of different authors. However, Langmuir-type function is not ade-quate for comparison of the publication output of different authors because it describes the rank-order distribution pat-terns satisfactorily in terms of two parameters. To compare the publication output of different authors independent of their career length t, it is suggested to use scaling parameters h/t, hf/t and hm/t.
Przeanalizowano dane liczby cytowań kumulacyjnych ln wybranego n-tego artykułu spośródN indywidualnych artyku-łów opublikowanych przez niektórych wysoko i umiarkowanie cytowanych pojedynczych autorów. Do porównania użyto wskaźników Hirscha h i Hirscha-podobnych h1, hf i hm, oraz promienia cytowań R i Rfpod względem: 1) liczby Anwspółautorów artykułów, 2) normalizacji liczby cytowań lni ułamka kumulacyjnego lnf cytowania n-tego artykułu średnimi i środkowymi cytowaniami lnwszystkich cytowań Ncartykułów,3) określenia efektywnego rzędu neffcytowań lnf. Analiza danych ln(n), lnf(n) i lnf(neff) była prowadzona również wedle funkcji typu Langmuira l = l0[1−Kn/(1+Kn)], gdzie: l oznacza ln i lnf cytowania wszystkich cytowanych Ncartykułów umieszczonych w malejącym porządku, pa-rametr efektywności, K to tak zwana stała Langmuira, noznacza rząd n lub neffcytowań oraz l0 to wartość l, gdy n lub neffdąży do zera. Do porównania dorobku publikacyjnego różnych autorów stwierdzono, że wskaźnik hm jest bardziej miarodajny od pozostałych oraz, że można je znormalizować w celu uwzględnienia kariery publikacyjnej różnych auto-rów. Funkcja typu Langmuira nie jest właściwa jednak do porównania dorobku publikacyjnego różnych autorów po-nieważ opisuje ona w sposób zadowalający rozkład kolejności rzędu ich artykułówprzy pomocy dwóch parametrów. Do porównania dorobku publikacyjnego różnych autorów, niezależnego od długości ich kariery t, zaproponowano sto-sowanie parametrów skalowania h/t, hf/t and hm/t.
Źródło:
Journal of Computer Sciences Institute; 2022, 23; 152--164
2544-0764
Pojawia się w:
Journal of Computer Sciences Institute
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Domain h Type Collective Dimerization of Graphite and Possible $sp^2$ rightarrow $sp^3$ Transition Induced by Inter h Layer Charge Transfer Excitations in the Visible Region
Autorzy:
Radosinski, L.
Ostasiewicz, K.
Luty, T.
Radosz, A.
Nasu, K.
Powiązania:
https://bibliotekanauki.pl/articles/1536487.pdf
Data publikacji:
2010-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.30.Hd
61.66.-f
Opis:
We theoretically study possible domain-type collective dimerizations of graphite induced by inter-layer charge transfer excitations in the visible region. Using the semiempirical Brenner theory, we have calculated the adiabatic energy along the path that starts from original two distant graphite layers, but finally reaches the dimerized domain which consists of about 100 carbons with inter-layer σ-bonds. The energy barrier between this new domain and the starting graphite is shown to be of the order of 1 eV, being easily overcome by applying a few visible photons. We have also shown the optimal path of transformation via step by step increase of the domain size.
Źródło:
Acta Physica Polonica A; 2010, 118, 3; 500-506
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oxidation of a lignin model compound of benzyl-ether type linkage in water with H2O2 under an oxygen atmosphere catalyzed by Co(Salen)
Utlenianie modelowego związku ligniny z typem wiązania benzylowo-eterowego w wodzie z H2O2 w atmosferze tlenu katalizowane Co(Salen)
Autorzy:
Zhou, X.F.
Qin, J.X.
Wang, S.R.
Powiązania:
https://bibliotekanauki.pl/articles/52363.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Tematy:
oxidation
lignin model compound
benzyl-ether type
linkage
water
oxygen atmosphere
cobalt salen complex
catalytic property
analytical technique
veratrylglycerol-beta-guaiacyl-alpha,gamma-dimethylether
Opis:
The catalytic properties of Cobalt salen? complex in the oxidation of a lignin model compound [veratrylglycerol-β-guaiacyl-α,γ-dimethylether, VGD] have been investigated in order to obtain the mechanistic aspects of the reaction between Co(salen) and VGD under an oxygen atmosphere using hydrogen peroxide as an oxidant. VGD was found to undergo structural changes in response to the catalytic reaction as characterised by different analytical techniques (FT-IR, H-1 NMR and GC-MS), yielding 2-methoxy phenol and biphenyl. A mechanism for the oxidation of VGD was postulated.
Zbadano katalityczne właściwości kompleksu Co(Salen) w utlenianiu modelowego związku ligniny (veratrylglycerol-β-guaiacyl-α,γ-dimetyleter, VGD) w celu określenia mechanicznych aspektów reakcji pomiędzy Co(salen) i VGD w atmosferze tlenu przy zastosowaniu nadtlenku wodoru jako utleniacza. Zaobserwowano, że w VGD zaszły zmiany strukturalne w odpowiedzi na reakcję katalityczną, co przedstawiono za pomocą różnych technik analitycznych (FTIR, H-1 NMR oraz GC-MS). W efekcie otrzymano 2-metoksy fenol i bifenyl.
Źródło:
Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2011, 54, 186
1644-3985
Pojawia się w:
Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preparation of thioester type of broom extractant with silver selectivity
Autorzy:
Furugou, H.
Ohto, K.
Kawakita, H.
Harada, H.
Inoue, K.
Powiązania:
https://bibliotekanauki.pl/articles/346979.pdf
Data publikacji:
2007
Wydawca:
Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydział Technologii i Inżynierii Chemicznej
Tematy:
broom type extractant
tripodal compound
silver ion
extraction
ion selectivity
Opis:
A novel tripodal thioester type of broom extractant has been synthesized to investigate selectivity for soft metal ions. Broom extractant exhibited high extractability for silver ion compared with monopodal compound. The complexation ratio of the broom extractant and silver ion was found to be 1:1 from the result of extractant concentration dependency. For stripping of loaded silver ion, complete stripping was achieved with both 1 mol dm-3 thiourea and high concentration of acidic solutions. As an application, electrode response of silver ion was observed at concentration range of 10-3 to 10-6 M silver nitrate using broom extractant as an ionophore.
Źródło:
Ars Separatoria Acta; 2007, 5; 68-75
1731-6340
Pojawia się w:
Ars Separatoria Acta
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New type of axial starter
Autorzy:
Hajek, V.
Vitek, O.
Kuchynkova, H.
Powiązania:
https://bibliotekanauki.pl/articles/1373273.pdf
Data publikacji:
2010
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
rozrusznik
Opis:
The Czech automotive industry presents its product to the car market segment: a starter of a unique AXIAL concept developed with the aid of purpose support from the Ministry of Industry and Trade, with a power of 1.3 kW and 2 kW, - the switch in one axis with the pinion, planet reducer and motor rotor. The starter uses excitation by NdFeB-based permanent magnets.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2010, 87; 59-62
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spaces of sequences, sampling theorem, and functions of exponential type
Autorzy:
H. Torres, Rodolfo
Powiązania:
https://bibliotekanauki.pl/articles/1293543.pdf
Data publikacji:
1991
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Opis:
We introduce certain spaces of sequences which can be used to characterize spaces of functions of exponential type. We present a generalized version of the sampling theorem and a "nonorthogonal wavelet decomposition" for the elements of these spaces of sequences. In particular, we obtain a discrete version of the so-called φ-transform studied in [6] [8]. We also show how these new spaces and the corresponding decompositions can be used to study multiplier operators on Besov spaces.
Źródło:
Studia Mathematica; 1991, 100, 1; 51-74
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On coalgebras and type transformations
Autorzy:
Gumm, H.
Powiązania:
https://bibliotekanauki.pl/articles/728854.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
coalgebra
endofunctor
filter functor
cartesian transformation
crisp
Opis:
We show that for an arbitrary Set-endofunctor T the generalized membership function given by a sub-cartesian transformation μ from T to the filter functor can be alternatively defined by the collection of subcoalgebras of constant T-coalgebras. Sub-natural transformations ε between any two functors S and T are shown to be sub-cartesian if and only if they respect μ. The class of T-coalgebras whose structure map factors through ε is shown to be a covariety if ε is a natural and sub-cartesian mono-transformation.
Źródło:
Discussiones Mathematicae - General Algebra and Applications; 2007, 27, 2; 187-197
1509-9415
Pojawia się w:
Discussiones Mathematicae - General Algebra and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Triebel-Lizorkin spaces on spaces of homogeneous type
Autorzy:
Han, Y.-S
Powiązania:
https://bibliotekanauki.pl/articles/1290774.pdf
Data publikacji:
1994
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
spaces of homogeneous type
$H^p$ and Triebel-Lizorkin spaces
Littlewood-Paley S-function
atomic decomposition
Opis:
In [HS] the Besov and Triebel-Lizorkin spaces on spaces of homogeneous type were introduced. In this paper, the Triebel-Lizorkin spaces on spaces of homogeneous type are generalized to the case where $p_0 < p ≤ 1 ≤ q < ∞$, and a new atomic decomposition for these spaces is obtained. As a consequence, we give the Littlewood-Paley characterization of Hardy spaces on spaces of homogeneous type which were introduced by the maximal function characterization in [MS2].
Źródło:
Studia Mathematica; 1994, 108, 3; 247-273
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
1H-Benzimidazole derivatives as mammalian DNA topoisomerase I inhibitors
Autorzy:
Alpan, A
Gunes, H
Topcu, Zeki
Powiązania:
https://bibliotekanauki.pl/articles/1040939.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
1H-benzimidazole derivatives
type I DNA topoisomerase
plasmid supercoil relaxation assays
Opis:
Benzimidazole is one of the most important heterocyclic groups manifesting various biological properties, such as antibacterial, antifungal, antimicrobial, antiprotozoal and antihelmintic activities. Several benzimidazole derivatives are also active as inhibitors of type I DNA topoisomerases. In this study, three 1H-benzimidazole derivatives with different electronic characteristics at position 5-, namely 5-chloro-4-(1H-benzimidazole-2-yl)phenol (Cpd I), 5-methyl-4-(1H-benzimidazole-2-yl)phenol (Cpd II) and 4-(1H-benzimidazole-2-yl)phenol (Cpd III), were synthesized and evaluated for their effects on mammalian type I DNA topoisomerase activity using quantitative in vitro plasmid supercoil relaxation assays. For the structure elucidation of the compounds, melting points, UV, IR, 1H NMR, 13C NMR, mass spectral data and elemental analyses were interpreted. Among the compounds, 5-methyl-4-(1H-benzimidazole-2-yl)phenol (Cpd II) manifested relatively potent topoisomerase I inhibition.
Źródło:
Acta Biochimica Polonica; 2007, 54, 3; 561-565
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of the effect of intermittent type of mental work-load by physiological psychological index
Autorzy:
Mizuno, T.
Nomura, S.
Nozawa, A.
Asano, H.
Ide, H.
Powiązania:
https://bibliotekanauki.pl/articles/333172.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
mentalne obciążenie pracą
mental workload
fasal skin temperature physiological psychological evaluation
intermittent type of MWL
Opis:
This paper was aimed at evaluating the mental work-load (MWL) with psycho-physiological indices. Especially, we focused on the intermittent type of MWL, which is assumed as a predisposing factor of various somatic and mental disorders. In the experiment, we introduced a facial skin thermo image comparing with conventional physiological indices, such as electrocardiogram (ECG) and electroencephalogram (EEG). As a result, the facial skin image was suggested to be a useful tool for evaluating such an intermittent type of MWL.
Źródło:
Journal of Medical Informatics & Technologies; 2009, 13; 249-253
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Critical Behaviour of Pyroelectric-Type Superconductors
Autorzy:
Krzyżanowski, I. H.
Powiązania:
https://bibliotekanauki.pl/articles/1887981.pdf
Data publikacji:
1991-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
67.50.-b
74.70.-b
Opis:
The quasiclassical, Eilenberger-type equations are applied to description of rotating P-wave pyroelectric-type superconductor in the presence of magnetic field H and superflow υ. In analogy to type-II superconductors the possibility of vortex solution is discussed. We determine the symmetry of eigensolutions and the upper critical velocity Ω$\text{}_{c2}$. We discuss the paramagnetic critical behaviour of the system depending on the strength of spin-orbit interaction.
Źródło:
Acta Physica Polonica A; 1991, 80, 1; 81-98
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Converse type inequalities for averaged moduli of smoothness in Orlicz spaces generated by concave functions
Autorzy:
Musielak, H.
Powiązania:
https://bibliotekanauki.pl/articles/745929.pdf
Data publikacji:
1986
Wydawca:
Polskie Towarzystwo Matematyczne
Opis:
The article contains no abstract
Źródło:
Commentationes Mathematicae; 1986, 26, 2
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Isometric immersions of the hyperbolic space $H^n(-1)$ into $H^{n+1}(-1)$
Autorzy:
Hu, Ze-Jun
Powiązania:
https://bibliotekanauki.pl/articles/1396048.pdf
Data publikacji:
1999
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
isometric immersion
Monge-Ampère type equation
hyperbolic space
Opis:
We transform the problem of determining isometric immersions from $H^n(-1)$ into $H^{n+1}(-1)$ into that of solving equations of degenerate Monge-Ampère type on the unit ball $B^n(1)$. By presenting one family of special solutions to the equations, we obtain a great many noncongruent examples of such isometric immersions with or without umbilic set.
Źródło:
Colloquium Mathematicum; 1999, 79, 1; 17-23
0010-1354
Pojawia się w:
Colloquium Mathematicum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selenium and copper in type 2 diabetes mellitus - more doubt than certainty
Autorzy:
Zabłocka-Słowińska, K.
Grajeta, H.
Powiązania:
https://bibliotekanauki.pl/articles/960069.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Opis:
Type 2 diabetes mellitus (T2DM) is one of the most common chronic illnesses nearly all over the world and the prevalence of this disorder is still growing. Particularly in industrialized countries, it has become the most serious global medical and public problem, next to cancer and cardiovascular diseases. Despite intensive developments in the research on T2DM pathogenesis, the impact of nutritional factors, and particularly the effect of trace elements, on the development of this disease has not been identified completely, although relationships between some elements, e.g. Zn, Fe, Cr, and T2DM have been described in detail. Critical review of the literature indicates that the majority of inconsistencies appear in studies on Cu and Se: on the one hand, these minerals have strong antioxidant properties and even insulin-mimetic action; on the other hand, an increased risk of T2DM positively correlates with a high dietary intake of Se and Cu or supplementation with these elements. High content of these minerals in diets observed in selected countries and/or increasing popularity of dietary supplementation with Se or Cu, especially among chronically ill patients including ones with T2DM, can cause distortions in the molecular pathways of glucose metabolism. The influence of these minerals on inducing diabetic complications is even more vague and depends on several factors, e.g. the body status of these and other trace elements, the type of complications and the duration of T2DM. The relationship between T2DM and the status of Se and Cu is complex and bidirectional, thus a well-balanced diet providing these trace elements in proper amounts, according to the demand of an organism, may be one of the strategies in reducing the risk of T2DM and its complications.
Źródło:
Journal of Elementology; 2017, 22, 1
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On a weak type (1,1) inequality for a maximal conjugate function
Autorzy:
Asmar, Nakhlé H.
Montgomery-Smith, Stephen J.
Powiązania:
https://bibliotekanauki.pl/articles/1219146.pdf
Data publikacji:
1997
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Opis:
In their celebrated paper [3], Burkholder, Gundy, and Silverstein used Brownian motion to derive a maximal function characterization of $H^p$ spaces for 0 < p < ∞. In the present paper, we show that the methods in [3] extend to higher dimensions and yield a dimension-free weak type (1,1) estimate for a conjugate function on the N-dimensional torus.
Źródło:
Studia Mathematica; 1997, 125, 1; 13-21
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Tendencies Group Type III Burst Form Type II Burst During Low activity
Autorzy:
Hamidi, Z. S.
Mokthtar, Fatin Nabila
Shariff, N. N. M.
Ali, Marhana Omar
Husien, Nurulhazwani
Sabri, S. N. U.
Zainol, N. H.
Monstein, C.
Powiązania:
https://bibliotekanauki.pl/articles/1191365.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Coronal Mass Ejections (CMEs)
X-ray region
radio region
solar burst
sun
sun type II
sun type III
Opis:
Using the e-CALLISTO network radio observations on 1st June 2015, we present an analysis of the complex type III and type II solar radio bursts during low activity. This event occurred on 1st July 2015 at 13:52 UT (complex solar burst type III) and 13:40 UT - 13:44 UT (solar burst type II). Solar burst type detected at (i) BIR, (ii) BLENSW, (iii) Essen, (iv) Glascow (v) Osra, (vi) Rwanda. The spectral shape consists of high flux densities at meter wavelengths. The energy going into plasma heating during each flare was estimated by computing the time evolution of the energy content of the thermal plasma and obtaining the peak value. This constitutes a lower limit to the thermal energy, since it does not account for the cooling of the plasma prior to this time nor to any heating at later times. It is also believed that the meter wavelength branch of the this type III spectrum may be attributable to second-phase accelerated electrons to form type II burst. There are four sunspots of the active regions (AR2355, AR2356, AR2357, and AR2358) during this event. The solar wind recorded during the event is 342.4 km/s and the density of the proton recorded is 4.1 protons/cm3. Moreover, the are some evidence that radio-quiet CMEs mostly came from the edges of the sun. The main goal of this study was to determine whether is there any possibilities that the radio burst can be formed even the Sun is at low activity and this event is one of the candidate events.
Źródło:
World Scientific News; 2016, 34; 121-134
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary studies on the inheritance of white coat colour in Arctic foxes [Alopex lagopus L.]
Autorzy:
Filistowicz, A
Wierzbicki, H
Przysiecki, P
Powiązania:
https://bibliotekanauki.pl/articles/2046602.pdf
Data publikacji:
1997
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
inheritance
Arctic fox
Alopex lagopus
coat colour
blue type
white type
Opis:
Main genes determining white coat colour in Arctic foxes are: recessive gene d and incompletely dominant, autosomal gene S with lethal effect in homozygous condition. The white coat colour of Arctic foxes bred on Polish farms had been determined solely by the recessive gene until the 1970s, when the Shadow variety was imported from Norway. The genetic code of the two varieties was different, but this fact was not taken into account. The results obtained in the present study do not confirm the theories on the heredity of white coat colour of Arctic foxes. The authors of these theories assumed that the coat colour depends on the presence of a recessive gene, the only factor responsible for the white furcoat. Apart from Polar and Shadow white foxes, there is a wide variety of darker white animals, and this fact suggests that there is a number of cumulative genes responsible for the intensity of coat pigmentation.
Źródło:
Journal of Applied Genetics; 1997, 38, 1; 57-64
1234-1983
Pojawia się w:
Journal of Applied Genetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Establishment of motion model for wave capture buoy and research on hydrodynamic performance of floating-type wave energy converter
Autorzy:
Gao, H.
Li, B.
Powiązania:
https://bibliotekanauki.pl/articles/259950.pdf
Data publikacji:
2015
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
wave energy
linear wave
floating-type
hydrodynamic
absorption efficiency
Opis:
Floating-type wave energy converter has the advantages of high wave energy conversion efficiency, strong shock resistance ability in rough sea and stable output power. So it is regarded as a promising energy utilization facility. The research on hydrodynamic performance of wave capture buoys is the precondition and key to the wave energy device design and optimization. A simplified motion model of the buoys in the waves is established. Based on linear wave theory, the equations of motion of buoys are derived according to Newton’s second law. The factors of wave and buoys structural parameters on wave energy absorption efficiency are discussed in the China’s Bohai Sea with short wave period and small wave height. The results show that the main factor which affects the dynamic responses of wave capture buoys is the proximity of the natural frequency of buoys to the wave period. And the incoming wave power takes a backseat role to it at constant wave height. The buoys structural parameters such as length, radius and immersed depth, influence the wave energy absorption efficiency, which play significant factors in device design. The effectiveness of this model is validated by the sea tests with small-sized wave energy devices. The establishment methods of motion model and analysis results are expected to be helpful for designing and manufacturing of floating-type wave energy converter.
Źródło:
Polish Maritime Research; 2015, S 1; 106-111
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multiplicity results for perturbed fourth-order Kirchhoff-type problems
Autorzy:
Tavani, M. R. H.
Afrouzi, G. A.
Heidarkhani, S.
Powiązania:
https://bibliotekanauki.pl/articles/952853.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
multiplicity results
multiple solutions
fourth-order Kirchhoff-type equation
variational methods
critical point theory
Opis:
In this paper, we investigate the existence of three generalized solutions for fourth-order Kirchhoff-type problems with a perturbed nonlinear term depending on two real parameters. Our approach is based on variational methods.
Źródło:
Opuscula Mathematica; 2017, 37, 5; 755-772
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Petrology and geochemistry of rapakivi-type granites from the crystalline basement of NE Poland
Autorzy:
Bagiński, B.
Duchense, J.
Auwera, J. van der
Martin, H.
Wiszniewska, J.
Powiązania:
https://bibliotekanauki.pl/articles/2059326.pdf
Data publikacji:
2001
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Mazury complex
rapakivi-type granites
jotunite
granite modelling
Opis:
80 rock samples from drill-cores at 8 localities in the Mazury complex (Polish part of the crystalline East European Craton), representing rock types from monzodiorites to leucogranites, were studied for major, trace and REE elements by XRF and ICP-MS methods. The range in composition of the investigated rocks varies from 46 to 76% SiO2 contents. All of them show similar REE distributions, which suggests that they are genetically linked. They also plot along a major trend with many similarities to the jotunitic liquid line of descent defined in AMCG rocks from Rogaland (Norway). Each group of rocks has however its own specific pattern of elements.
Źródło:
Geological Quarterly; 2001, 45, 1; 33-52
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Fatigue Fracture Study on TDCB Aluminum Foam Specimen of Type Mode III Bonded with Adhesive
Autorzy:
Lee, J. H.
Cho, J. U.
Powiązania:
https://bibliotekanauki.pl/articles/356731.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
aluminum foam
fatigue fracture
fatigue analysis
load
Mode III type
specimen thickness
Opis:
This paper studies the characteristics of junction structure of closed-cell type aluminum foam, which is generally used as a shock absorber. TDCB specimens were designed for mode III type with thickness as a variable and performed a fatigue experiment on them by thickness. As the result, the load value of all specimens peaks under 0 to 25 cycles and decreases as the cycles increase. As the specimen thickens by 10 mm, the maximum load value is 1.2 times. When the thickness increases by 20 mm, the maximum value increases by 1.5 times. This study result can be utilized by investigating the mechanical characteristics of TDCB specimens for mode III type under fatigue loading conditions systematically and efficiently.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 2B; 1359-1362
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Production of Coronal Mass Ejections in Relation With Complex Solar Radio Burst Type III Correlated With Single Solar Radio Burst Type III
Autorzy:
Hussien, Nurul Hazwani
Hamidi, Z. S.
Ali, M. O.
Sabri, S. N. U.
Zainol, N. H.
Shariff, N. N. M.
Moinstein, C
Powiązania:
https://bibliotekanauki.pl/articles/1192988.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Sun
Solar radio burst
type III
single Solar Radio Burst Type (SRBT) III
complex Solar Radio Burst Type (SRBT) III
Coronal Mass Ejection (CMEs)
magnetic reconnection
Opis:
The complex solar radio burst type III is very related to generation of Coronal Mass Ejections (CMEs). In a previous study, they deduced that the burst was produced by electron beams accelerated in blast wave shocks and injected along open magnetic field lines, similar to the herringbone bursts at metric wavelengths. Usually, if there is another solar flare recorded during complex solar radio burst type III it should be type II burst. Different for this event, the single solar radio burst recorded occur 8 minutes 30 seconds before the complex solar radio burst type III. The Coronal Mass Ejections also recorded occurred 7 hours before the single and complex solar radio burst type III. It is noted that CMEs occurred several hours before this event recorded by the SOHO websites.It is proved that the production of coronal mass ejection contributed to the production of complex solar radio burst type III.
Źródło:
World Scientific News; 2016, 36; 96-108
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Users-centric adaptive learning system based on interval type-2 fuzzy logic for massively crowded e-learning platforms
Autorzy:
Almohammadi, K.
Hagras, H.
Alghazzawi, D.
Aldabbagh, G.
Powiązania:
https://bibliotekanauki.pl/articles/91622.pdf
Data publikacji:
2016
Wydawca:
Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
Tematy:
Type-2 Fuzzy Logic systems
e-learning
intelligent learning environments
Opis:
Technological advancements within the educational sector and online learning promoted portable data-based adaptive techniques to influence the developments within transformative learning and enhancing the learning experience. However, many common adaptive educational systems tend to focus on adopting learning content that revolves around pre-black box learner modelling and teaching models that depend on the ideas of a few experts. Such views might be characterized by various sources of uncertainty about the learner response evaluation with adaptive educational system, linked to learner reception of instruction. High linguistic uncertainty levels in e-learning settings result in different user interpretations and responses to the same techniques, words, or terms according to their plans, cognition, pre-knowledge, and motivation levels. Hence, adaptive teaching models must be targeted to individual learners’ needs. Thus, developing a teaching model based on the knowledge of how learners interact with the learning environment in readable and interpretable white box models is critical in the guidance of the adaptation approach for learners’ needs as well as understanding the way learning is achieved. This paper presents a novel interval type-2 fuzzy logic-based system which is capable of identifying learners’ preferred learning strategies and knowledge delivery needs that revolves around characteristics of learners and the existing knowledge level in generating an adaptive learning environment. We have conducted a large scale evaluation of the proposed system via real-word experiments on 1458 students within a massively crowded e-learning platform. Such evaluations have shown the proposed interval type-2 fuzzy logic system’s capability of handling the encountered uncertainties which enabled to achieve superior performance with regard to better completion and success rates as well as enhanced learning compared to the non-adaptive systems, adaptive system versions led by the teacher, and type-1-based fuzzy based counterparts.
Źródło:
Journal of Artificial Intelligence and Soft Computing Research; 2016, 6, 2; 81-101
2083-2567
2449-6499
Pojawia się w:
Journal of Artificial Intelligence and Soft Computing Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Convergence of one-step difference methods for nonlinear parabolic differential-functional systems with initial boundary conditions of Dirichlet type
Autorzy:
Leszczyński, H.
Powiązania:
https://bibliotekanauki.pl/articles/746479.pdf
Data publikacji:
1991
Wydawca:
Polskie Towarzystwo Matematyczne
Opis:
The article contains no abstract
Źródło:
Commentationes Mathematicae; 1991, 30, 2
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preparation of network π-conjugated copolymers with Ullmann type polycondensation
Autorzy:
Nakajima, K.
Goto, H.
Powiązania:
https://bibliotekanauki.pl/articles/411673.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
copolymer
cross-link
polyaniline
Ullmann re action
Opis:
Ullmann type polycondensations in the presence of CuI and a base were carried out to afford network type π-conjugated copolymers. Infrared absorption spectroscopy measurements and surface observation using a scanning electron microscopy are carried out. Electron spin resonance spectroscopy measurements revealed that the cross-linked copolymers thus obtained contain small amount of copper. This polymerization conveniently allows production of network π-conjugated polymers. The polymer can be expected to have thermo-resistance.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 6; 33-38
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optymalizacja konstrukcji pewnej klasy przetworników typu "parametr/okres" ze względu na błędy dynamiczne
Optimization of construction of a type
Autorzy:
Urzędniczok, H.
Powiązania:
https://bibliotekanauki.pl/articles/157859.pdf
Data publikacji:
1998
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Opis:
Omówiono zagadnienia dotyczące błędów wprowadzanych przez tytułowe przetworniki przy pomoiarach wielkości zmiennych w czasie. Przedstawiono założenia i metodę uproszczonej analizy dynamiki generatorów sprzężeniowych jako przetworników pomiarowych typu "parametr/okres sygnału wyjściowego". Rezultaty analizy pozwalają na dobór struktuty układu przetwornika i wartości jego parametrów pod kątem minimalizacji błędów dynamicznych.
Some problems connected to the dynamic errors when the oscillating "parameter-to period" converters are used to measure time variable quantity are presented. a method of analisis of the RC oscillators as the "parameter-to-period" measuring converters is described. The obtained results allows for optimal choosing of the structure and parameters of converters.
Źródło:
Pomiary Automatyka Kontrola; 1998, R. 44, nr 2, 2; 34-37
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parametric Borel summability for some semilinear system of partial differential equations
Autorzy:
Yamazawa, H.
Yoshino, M.
Powiązania:
https://bibliotekanauki.pl/articles/254935.pdf
Data publikacji:
2015
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
Borel summability
singular perturbation
Euler type operator
Opis:
In this paper we study the Borel summability of formal solutions with a parameter of first order semilinear system of partial differential equations with n independent variables. In [Singular perturbation of linear systems with a regular singularity, J. Dynam. Control. Syst. 8 (2002), 313-322], Balser and Kostov proved the Borel summability of formal solutions with respect to a singular perturbation parameter for a linear equation with one independent variable. We shall extend their results to a semilinear system of equations with general independent variables.
Źródło:
Opuscula Mathematica; 2015, 35, 5; 825-845
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Effect Etching Time on Structure Properties of Nano-Crystalline p-type Silicon
Autorzy:
Hadi, H. A.
Powiązania:
https://bibliotekanauki.pl/articles/412165.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Porous Silicon
Electrochemical Etching
ECE
XRD
AFM
Opis:
This paper reports the influence of the etching time on structural characteristics of porous silicon manufactured by electrochemical etching (ECE) anodization p-type silicon wafers. Micro and nano-structural features of the samples are mainly investigated by XRD and AFM techniques. The morphological properties of PS layer such as nano-crystalline size, the structure aspect of PS layer and lattice constant have been investigated. Nanocrystals size (grain size) computing from XRD data (145 to 85) nm is resulting the increasing etching time.AFM investigations reveal increase in (RMS) roughness, Sz.(Ten Point height) and average diameter of the porous structure with increase in etching time.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 17, 3; 327-333
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Late Cretaceous anomurans and brachyurans from the Maastrichtian type area
Autorzy:
Collins, J S H
Fraaye, R H B
Jagt, J W M
Powiązania:
https://bibliotekanauki.pl/articles/19953.pdf
Data publikacji:
1995
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
rak pustelnik
kraby
Holandia
mastrycht holendersko-belgijski
paleontologia
Paragalathea
Belgia
Opis:
From the late Maastrichtian of southern Limburg (The Netherlands) and northeast Belgium, three species of anomurans in as many genera and sixteen brachyuran species in fourteen genera are described. Of the anomurans, Paguristes florae and Eomunidopsis meerssensis, are new; of the brachyurans seven species and one genus are new. These are: Glyptodynomene inornata, Dromiopsis praelaevior, Dromiopsis mosae, Homolopsis declinata, Raninoides? quadrispinosus, Raniliformis occlusa and Binkhorstia euglypha. A new genus, Leptoides, is erected to contain Titanocarcinus briarti (Forir 1887) and a concise historical account of the crabs of the Liège-Limburg Maastrichtian is given.
Publikacja zawiera opisy trzech gatunków raków pustelników i szesnastu krabów ze stratotypowych odsłonięć mastrychtu na pograniczu Holandii i Belgii. Spośród pustelników dwa gatunki są nowe a z krabów siedem gatunków i jeden rodzaj. Zespół krabów zawiera zarówno kosmopolityczne jak i endemiczne gatunki. Najbardziej konserwatywnym ewolucyjnie rodzajem jest Paragalathea, znany od tytonu; połowa rodzajów jest znana również z wczesnej lub środkowej kredy, są to głównie formy kosmopolityczne. Poza raninidami, spośród których przynajmniej niektóre ryły w osadzie, kraby z mastrychtu holendersko-belgijskiego zasiedlały stosunkowo płytkowodne środowiska. Wysokie zróżnicowanie taksonomiczne późnokredowych pustelników i krabów jest wyrazem "morskiej rewolucji mezozoicznej". Liczne ciągi ewolucyjne późnomastrychckich skorupiaków kontynuują się w paleocenie.
Źródło:
Acta Palaeontologica Polonica; 1995, 40, 2; 165-210
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Increase in glycaemia stimulates reactive oxygen species (ROS) production by polymorphonuclear neutrophils in type 2 diabetic patients
Autorzy:
Pisarczyk-Wiza, D.
Zozulinska-Ziolkiewicz, D.
Wysocki, H.
Wierusz-Wysocka, B.
Powiązania:
https://bibliotekanauki.pl/articles/3393.pdf
Data publikacji:
2011
Wydawca:
Instytut Medycyny Wsi
Tematy:
glycemia
reactive oxygen species
production
polymorphonuclear neutrophil
patient
diabetes type 2
Źródło:
Journal of Pre-Clinical and Clinical Research; 2011, 05, 1
1898-2395
Pojawia się w:
Journal of Pre-Clinical and Clinical Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Indirect RKKY-Type Interaction by Direct Oxygen Hopping
Autorzy:
Rodriguez-Nuńez, J.
Coqblin, B.
Beck, H.
Konior, J.
Powiązania:
https://bibliotekanauki.pl/articles/1930566.pdf
Data publikacji:
1994-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
74.20.Mn
74.25.Jb
Opis:
The three-band Emery model, describing the holes in the CuO$\text{}_{2}$ planes of the high-temperature superconducting oxides, is considered. The model includes the direct oxygen-oxygen hopping integral t$\text{}_{pp}$. The exact Bogolyubov transformation is used to exclude one oxygen band and obtain a two-dimensional Anderson model. Afterward, the effective Hamiltonian is obtained by eliminating the second oxygen band with the use of two approximate canonical transformations. The effective Hamiltonian describes the spins residing on the copper sites and interacting through an indirect interaction J$\text{}_{SX}$(R), where R is the distance between two copper ions. J$\text{}_{SX}$(R) depends on the doping rate δ and is a decaying function of R. Numerical results for J$\text{}_{SX}$(R) are given for different doping rates δ for the case of parabolic bands. The obtained interaction J$\text{}_{SX}$(R), when added to the original antiferromagnetic interaction (present in oxides at δ = 0), might lead to a frustration of the long-range antiferromagnetic ordering upon doping.
Źródło:
Acta Physica Polonica A; 1994, 85, 2; 317-322
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
$(H_p,L_p)$-type inequalities for the two-dimensional dyadic derivative
Autorzy:
Weisz, Ferenc
Powiązania:
https://bibliotekanauki.pl/articles/1287322.pdf
Data publikacji:
1996
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
Hardy spaces
p-atom
interpolation
Walsh functions
dyadic derivative
Opis:
It is shown that the restricted maximal operator of the two-dimensional dyadic derivative of the dyadic integral is bounded from the two-dimensional dyadic Hardy-Lorentz space $H_{p,q}$ to $L_{p,q}$ (2/3 < p < ∞, 0 < q ≤ ∞) and is of weak type $(L_1,L_1)$. As a consequence we show that the dyadic integral of a ∞ function $f ∈ L_1$ is dyadically differentiable and its derivative is f a.e.
Źródło:
Studia Mathematica; 1996, 120, 3; 271-288
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The use of low-carbohydrate diet in type 2 diabetes-benefits and risks
Autorzy:
Czyzewska-Majchrzak, L.
Grzelak, T.
Kramkowska, M.
Czyzewska, K.
Witmanowski, H.
Powiązania:
https://bibliotekanauki.pl/articles/50466.pdf
Data publikacji:
2014
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2014, 21, 2
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design of Supply Chain Network to Reduce Impacts of Damages during Shipping
Autorzy:
Abushaega, Mastoor M.
Daehy, Yahya H.
Alghamdi, Saleh Y.
Krishnan, Krishna K.
Khamaj, Abdulrahman
Powiązania:
https://bibliotekanauki.pl/articles/1841416.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
supply chain network
damage recovery scenarios
closed loop supply chain
type I errors
type II errors
Opis:
Recently, the expand of industrial market has led to have long supply chain network. During the long shipment, the probability of having damaged products is likely to occur. The probability of having damaged products is different between stages and that could lead to higher percentage of damaged products when arrived at retailers. Many companies have rejected the entire shipment because the damaged product percentage was higher than that agreed on. Decision-makers have tried to reduce the percentage of damaged products that happened because the transit, loading unloading the shipment, and natural disasters. Companies started to implement recovery centers in the supply chain network in order to return their system steady statues. Recovery models have been developed in this paper to reduce the damaged percentage at minimum costs to do so. Results show that the possibility of implementing an inspection unit and a recovery centers in the system before sending the entire shipment to the retailer based on examining a sample size that has been selected randomly from the shipment and the minimum cost of committing type I and type II errors. Designing a methodology to minimize the total cost associated with the supply chain system when there is a possibility of damage occurring during shipping is the objective of this research.
Źródło:
Management and Production Engineering Review; 2021, 12, 2; 17-26
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Big-Bang Big-Crunch optimized general type-2 fuzzy logic approach for Multi-Criteria Group Decision Making
Autorzy:
Naim, S.
Hagras, H.
Powiązania:
https://bibliotekanauki.pl/articles/91606.pdf
Data publikacji:
2013
Wydawca:
Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
Tematy:
General Type-2 Fuzzy Logic
Multi-Criteria Group Decision Making
MCGDM
Big Bang-Big Crunch
BB-BC
intelligent apartment
iSpace
Opis:
Multi-Criteria Group Decision Making (MCGDM) aims to find a unique agreement from a number of decision makers/users by evaluating the uncertainty in judgments. In this paper, we present a General Type-2 Fuzzy Logic based approach for MCGDM (GFLMCGDM). The proposed system aims to handle the high levels of uncertainties which exist due to the varying Decision Makers’ (DMs) judgments and the vagueness of the appraisal. In order to find the optimal parameters of the general type-2 fuzzy sets, we employed the Big Bang-Big Crunch (BB-BC) optimization. The aggregation operation in the proposed method aggregates the various DMs opinions which allow handling the disagreements of DMs’ opinions into a unique approval. We present results from an application for the selection of reading lighting level in an intelligent environment. We carried out various experiments in the intelligent apartment (iSpace) located at the University of Essex. We found that the proposed GFL-MCGDM effectively handle the uncertainties between the various decision makers which resulted in producing outputs which better agreed with the users’ decision compared to type 1 and interval type 2 fuzzy based systems.
Źródło:
Journal of Artificial Intelligence and Soft Computing Research; 2013, 3, 2; 117-132
2083-2567
2449-6499
Pojawia się w:
Journal of Artificial Intelligence and Soft Computing Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of Carbon Nanotube Based Reflection Type X-ray Source
Autorzy:
Choi, H.
Kim, J.
Lee, C.
Powiązania:
https://bibliotekanauki.pl/articles/1807922.pdf
Data publikacji:
2009-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.47.Lx
75.47.Gk
73.50.Fq
Opis:
X-ray imaging technology is a useful and leading medical diagnostic tool for health care professionals to diagnose disease in human body. Carbon nanotube based X-ray source, which we have developed in this study, could be also useful and supply integrated diagnostic X-ray imaging tool in diagnosis. Conventionally, thermionic type of tungsten filament X-ray tube is widely employed in the field of biomedical and industrial application fields. However, intrinsic problems, such as poor emission efficiency, low imaging resolution, and high electrical energy consumption etc., may cause the limitation of using the X-ray tube. To fulfill the current market requirement, specifically for medical diagnostic field, we have developed rather a portable and compact carbon nanotube based X-ray device in which microfocus high imaging resolution can be feasible.
Źródło:
Acta Physica Polonica A; 2009, 115, 6; 1078-1080
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Intervalley Transfer of Electrons in ZnS-Type Thin Film Electroluminescent Devices
Autorzy:
Zhao, H.
Wang, Y.
Xu, Z.
Xu, X.
Powiązania:
https://bibliotekanauki.pl/articles/2011094.pdf
Data publikacji:
1999-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
72.20.-i
78.60.-b
Opis:
Based on the calculation about intervalley scattering rates in ZnS, the intervalley transfer process in ZnS-type thin film electroluminescent devices is investigated through the Monte Carlo simulation. The transient time of intervalley transfer is about 0.2-0.3 ps, it coincides with that of electron average energy. Intervalley distribution shifts to high valleys as the electric field increased. The electron kinetic energy distributions in different valleys are also gained. We propose that high valleys could store energies, which could prolong the decay of the electron average energy as the field was removed. These results could be used as the basic data on the study of electroluminescent process and the citation of valley parameters in analytic models should be carefully considered.
Źródło:
Acta Physica Polonica A; 1999, 96, 3-4; 475-482
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Graph-based Forensic Analysis of Web Honeypot
Autorzy:
Studiawan, H.
Djanali, S.
Pratomo, D. A.
Powiązania:
https://bibliotekanauki.pl/articles/309273.pdf
Data publikacji:
2016
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
access log
attack type
graph agglomerative clustering
visualization of large graphs
Opis:
Honeypot still plays an important role in network security, especially in analyzing attack type and defining attacker patterns. Previous research has mainly focused on detecting attack pattern while categorization of type has not yet been-comprehensively discussed. Nowadays, the web application is the most common and popular way for users to gather information, but it also invites attackers to assault the system. Therefore, deployment of a web honeypot is important and its forensic analysis is urgently required. In this paper, authors propose attack type analysis from web honeypot log for forensic purposes. Every log is represented as a vertex in a graph. Then a custom agglomerative clustering to categorize attack type based on PHP-IDS rules is deployed. A visualization of large graphs is also provided since the actual logs contain tens of thousands of rows of records. The experimental results show that the proposed model can help forensic investigators examine a web honeypot log more precisely.
Źródło:
Journal of Telecommunications and Information Technology; 2016, 2; 60-65
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Semi-Relativistic Scattering States of the Hulthén and Hyperbolic-Type Potentials
Autorzy:
Hassanabadi, H.
Yazarloo, B.
Hassanabadi, S.
Zarrinkamar, S.
Powiązania:
https://bibliotekanauki.pl/articles/1399494.pdf
Data publikacji:
2013-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
03.65.Pm
03.65.Nk
Opis:
In this paper, the scattering states of the spinless-Salpeter equation are investigated for Hulthén and hyperbolic-type potentials for any arbitrary l-state. Approximate analytical formulae of the wave functions and the scattering phase shifts are reported.
Źródło:
Acta Physica Polonica A; 2013, 124, 1; 20-22
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optical and Electrical Properties of Iodine Doped n-Type ZnSe Crystals
Autorzy:
Balcerzyk, M.
Firszt, F.
Męczyńska, H.
Powiązania:
https://bibliotekanauki.pl/articles/1886616.pdf
Data publikacji:
1991-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.55.Gs
72.20.My
78.55.Et
Opis:
We have studied the electrooptical properties of ZnSe single crystals doped with iodine by diffusion at high temperature. The obtained samples are highly conductive. The luminescence at 300 K (RT) is dominated by well known self activated orange emission. At 30 K the blue and orange emission is observed. The ratio of the blue emission peak intensity to the deep level one is much greater for the iodine doped samples than for the undoped intentionally ones.
Źródło:
Acta Physica Polonica A; 1991, 79, 2-3; 299-302
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of Hand Posture, Breathing Type, Arm Posture and Body Posture on Hand Errors
Autorzy:
Lee, T. H.
Cheng, T. S.
Powiązania:
https://bibliotekanauki.pl/articles/90970.pdf
Data publikacji:
2012
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
aiming
fine manipulation
hand tremor
pointing
Opis:
This study consisted of 2 experiments. Experiment 1 examined the effects of hand posture, arm posture and body posture on hand error, while experiment 2 examined the effects of hand posture, breathing type and body posture on hand error. This study showed that more hand errors occurred in the nondominant hand, extended arm, normal breathing and standing compared with errors in the dominant hand, flexed arm, inspire–hold and sitting, respectively. This study advised people to use their dominant hand, flex their arm, inspire and hold the breath and support their body while performing fine manipulation tasks. Finally, hand error varied dramatically across the participants, indicating the need to screen individuals for fine manual manipulation tasks.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2012, 18, 3; 393-398
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
MGF360-12L of ASFV-SY18 is an immune-evasion protein that inhibits host type I IFN, NF-κB, and JAK/STAT pathways
Autorzy:
Chen, Q.
Wang, X.X.
Jiang, S.W.
Gao, X.T.
Huang, S.Y.
Liang, Y.
Jia, H.
Zhu, H.F.
Powiązania:
https://bibliotekanauki.pl/articles/16647496.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
African swine fever virus
MGF360-12L
type I IFN
NF-κB
JAK/STAT
Opis:
African swine fever virus (ASFV) causes feverous and hemorrhagic disease of domestic pigs and European wild boars with high mortality, yet no commercial vaccine is currently available. Several ASFV strains with natural deletion or gene-targeted knockout of multiple MGF360 and MGF505 genes are attenuated in vitro and in vivo, and can offer full protection against homologous challenge. However, the mechanisms underlying the protection are not fully understood. This study aims to investigate the effects of MGF360-12L of ASFV-SY18 on the cGAS-STING signaling pathway and explore the potential mechanisms. We identified that ASFV-SY18 MGF360-12L could inhibit cGAS-STING, TBK1, or IRF3-5D-stimulated IFN-β expression and ISRE activation. Specifically, MGF360-12L inhibits both the activation of PRD(III-I) in a dose-dependent manner, and suppresses the exogenous expression of TBK1 and IRF3-5D. MGF360-12L could block NF-κB activation induced by overexpression of cGAS-STING, TBK1, IKKβ. Downstream of the IFN-β signaling, MGF360-12L blocks the ISRE promoter activation by reducing total protein level of IRF9. Moreover, MGF360-12L protein can inhibit IFN-β-mediated antiviral effects. In conclusion, our findings suggest that MGF360-12L is a multifunctional immune-evasion protein that inhibits both the expression and effect of IFN-β, which could partially explain the attenuation of relevant gene-deleted ASFV strains, and shed light on the development of efficient ASFV live attenuated vaccines in the future.
Źródło:
Polish Journal of Veterinary Sciences; 2023, 26, 1; 119-130
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Temperature Sensitive Spinel-Type Ceramics in Thick-Film Multilayer Performance for Environment Sensors
Autorzy:
Hadzaman, I.
Klym, H.
Shpotuyk, O.
Brunner, M.
Powiązania:
https://bibliotekanauki.pl/articles/1550632.pdf
Data publikacji:
2010-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.Je
07.07.Df
Opis:
Temperature sensitive thick films based on spinel-type semiconducting ceramics of different chemical composition $Cu_{0.1}Ni_{0.1}Co_{1.6}Mn_{1.2}O_{4}$ (with $p^{+}$-types of electrical conductivity), $Cu_{0.1}Ni_{0.8}Co_{0.2}Mn_{1.9}O_{4}$ (with p-types of electrical conductivity) and their multilayer $p^{+}$-p structures were fabricated and studied. These thick-film elements possess good electrophysical characteristics before and after long-term ageing test at 170°C. It is shown that degradation processes connected with diffusion of metallic Ag into film grain boundaries occur in one-layer p- and $p^{+}$-conductive thick films. The $p^{+}$-p structures were of high stability, the relative electrical drift was not greater than 1%.
Źródło:
Acta Physica Polonica A; 2010, 117, 1; 234-237
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Existence of p-Adic Quasi Gibbs Measures for Mixed Type p-Adic Ising λ-Model
Autorzy:
Dogan, M.
Akin, H.
Mukhamedov, F.
Powiązania:
https://bibliotekanauki.pl/articles/1398800.pdf
Data publikacji:
2016-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
05.50.+q
02.20.Qs
Opis:
We consider nearest-neighbors and next nearest-neighbors p-adic Ising λ-model with spin values {∓ 1} on a Cayley tree of order two. First we prove that the model satisfies the Kolmogorov consistency condition and then we prove that the nonlinear equation corresponding to the model has at least two solutions in $Q_{p}$, where p is a prime number p ≥ 3. One of the roots is in $ε_{p}$ and the others are in $Q_{p}$\$ε_{p}$. If the nonlinear equation has more than one non-trivial solutions for the model then we conclude that p-adic quasi Gibbs measure exists for the model.
Źródło:
Acta Physica Polonica A; 2016, 129, 4; 861-864
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Cation Substitution in "123"-type Superconducting Oxides on Powder Diffraction Intensities
Autorzy:
Łasocha, W.
Hodorowicz, S. A.
Chodorowicz-Bąk, A.
Eick, H. A.
Powiązania:
https://bibliotekanauki.pl/articles/1920530.pdf
Data publikacji:
1992-03
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
74.70.Vy
Opis:
This research was undertaken to determine whether by powder diffraction substitution in the "123"-type high T$\text{}_{c}$ oxides, Ln$\text{}_{1-x}$M$\text{}_{x}$Ba$\text{}_{2-y}$M$\text{}_{y}$Cu$\text{}_{3-z}$M$\text{}_{z}$O$\text{}_{6.5+δ}$ (where Ln = lanthanoid, M$\text{}_{x}$ = Me$\text{}^{3+}$, M$\text{}_{y}$ = Me$\text{}^{3+}$ and M$\text{}_{z}$ = Me$\text{}^{3+}$ and Me$\text{}^{2+}$) could be detected unequivocally. Numerous X-ray and a few neutron powder diffractograms were calculated for substituted compounds. Reflections most sensitive to substitution and the influence of site occupancy for Cu and O atoms are also characterized. The results are compared with some experimental data reported in the literature.
Źródło:
Acta Physica Polonica A; 1992, 81, 3; 397-404
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Use of Quantum Mechanical Methods to Obtain a Bohm-Type Coefficient of Diffusion
Autorzy:
Jiménez-Domínguez, H.
Powiązania:
https://bibliotekanauki.pl/articles/1807782.pdf
Data publikacji:
2009-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
51.20.+d
52.20.Dq
52.25.Fi
52.25.Xz
Opis:
A Bohm-type coefficient of diffusion is obtained by means of a procedure starting from the Hamiltonian of a single electron in a dilute plasma in the presence of an external, uniform magnetic field of constant magnitude and an electrical potential that serves to simulate an electrical fluctuation which drives the guiding center drift. Using the concept of the differentiation of operators with respect to time, the formula for the well-known E × B drift velocity is recovered. Finally, the solution of a quantum mechanical equation of motion for the guiding center is found in the quasi-classical approximation to obtain a diffusion coefficient.
Źródło:
Acta Physica Polonica A; 2009, 116, 2; 197-202
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Skuteczność herbicydów w uprawie kukurydzy w zależności od doboru adiuwantów i rozpylaczy
Effect of spray nozzle type and adjuvants on herbicide activity in maize
Autorzy:
Kierzek, R.
Wachowiak, M.
Krawczyk, R.
Ratajkiewicz, H.
Powiązania:
https://bibliotekanauki.pl/articles/238241.pdf
Data publikacji:
2014
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
opryskiwanie
adiuwanty
herbicydy
kukurydza
chwast
rozpylacz
spraying
adjuvants
herbicide
maize
weeds
droplet size
nozzle type
Opis:
W badaniach polowych określano wpływ środków powierzchniowo czynnych, dodawanych do cieczy użytkowej zawierającej herbicydy Hector 53,6 WG lub Hector Max 66,5 WG, na skuteczność zwalczania komosy białej w uprawie kukurydzy. Oceniano ponadto wpływ rozpylaczy o identycznej intensywności wypływu cieczy (w dm3·min-1), lecz wytwarzających krople o zróżnicowanej wielkości (jakość rozpylenia cieczy), na efektywność chwastobójczą. W zmiennych warunkach meteorologicznych panujących przed zabiegami ochronnymi i w trakcie ich wykonywania, dobór adiuwantów i rozpylaczy wpływał na skuteczność działania herbicydów. W warunkach stabilnych najlepsze efekty zniszczenia komosy białej (gatunek trudno zwilżalny) uzyskano po wykonaniu opryskiwania za pomocą rozpylaczy dwustrumieniowych TwinJet TJ60 11002 VS, wytwarzających krople drobne i bardzo drobne, natomiast w warunkach zmiennych i stresu wodnego – lepszym rozwiązaniem było użycie do zabiegu rozpylaczy grubokroplistych (AVI 11002), gdy do herbicydów dodawano adiuwanty o cechach poprawiających retencję oraz wnikanie substancji czynnych przez warstwę woskową liści. Najbardziej efektywnym dodatkiem okazał się adiuwant olejowy Olstick 90 EC.
The droplet size used for spraying operations and spray liquid properties modified with adjuvants have a significant impact on the coverage of the leaf surface of weeds and protected plants. In the study the effect of nozzle types with the same output but with different spray qualities (droplet size) was tested. Also was evaluated the influence of surface active agents (adjuvants) added to herbicide in tank mixture against Chenopodium album L. control in maize. Depending on weather conditions prevailing during the period of protective treatments (variable structure of weed leaf surface), the impact of spraying techniques and adjuvants on herbicidal effectiveness were mixed. The results showed that the most effective weed control was achieved after treatment with a fine nozzles TwinJet TJ60 11002 VS, especially when the adjuvants were added to herbicides to increase retention and penetration of active ingredients through a wax layer on the Ch. album leaves. In variable weather conditions the most useful was an adjuvant oil Olstick 90 EC.
Źródło:
Problemy Inżynierii Rolniczej; 2014, R. 22, nr 2, 2; 29-39
1231-0093
Pojawia się w:
Problemy Inżynierii Rolniczej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the Accuracy of the Solution to the Heat Conduction Problem with the Interval Method of Crank-Nicolson Type
Autorzy:
Jankowska, M. A.
Sypniewska-Kamińska, G.
Kamiński, H.
Powiązania:
https://bibliotekanauki.pl/articles/387306.pdf
Data publikacji:
2012
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
metoda Cranka-Nicholsona
arytmetyka interwałowa
błędy obliczeniowe
interval finite difference method of Crank-Nicholson type
interval arithmetic
computational errors
Opis:
The paper deals with the interval method of Crank-Nicolson type used for some initial-boundary value problem for the onedimensional heat conduction equation. The numerical experiments are directed at a short presentation of advantages of the interval solutions obtained in the floating-point interval arithmetic over the approximate ones. It is also shown how we can deal with errors that occur during computations in terms of interval analysis and interval arithmetic.
Źródło:
Acta Mechanica et Automatica; 2012, 6, 1; 36-43
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of diet quality in children and adolescents with type 1 diabetes
Autorzy:
El-Jamal, S.
Elfane, H.
Chamlal, H.
Barakat, I.
Daif, H.
Mziwira, M.
Fassouane, A.
Belahsen, R.
Powiązania:
https://bibliotekanauki.pl/articles/28765556.pdf
Data publikacji:
2022
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Opis:
Background. Micronutrient malnutrition is a serious public health problem in most developing countries, including Morocco, due to poor and therefore lower quality diets that lack dietary diversity. Objective. The present study aimed to assess dietary diversity and variety and their relationship with micronutrient adequacy in children and adolescents with type 1 diabetes (T1D). Materials and methods. A cross-sectional study was carried among 240 children and adolescents with T1D. Weight and height were measured and BMI was calculated. Dietary intake data were obtained from two 24-h recalls. A Dietary diversity (DDS) and dietary variety scores (DVS) and mean adequacy ratio (MAR) and nutritional adequacy ratios (NARs) were calculated and compared according to sociodemographic/anthropometric categories. Results. 52.1% of the patients were female. The mean age of the patients was 8.49 ± 4.1 years. The mean BMI was 19.44 ± 5.24 kg/m2; the mean DDS was 4.62±1.20 and the mean MAR was 0.66 ± 0.11. Older children living in rural areas have a low DDS/DVS. Parental education and income level are associated with DDS/DVS. General and central obesity were significantly elevated in children with high DDS. In addition, a high intake of vegetables, eggs, fiber and micronutrients (Magnesium, Calcium, Potassium, Zinc, Phosphorus and Vit B1) is associated with a high DDS; however, high DVS is associated with high consumption of dairy products, carbohydrates and low intake of protein and fat. There are also positive correlations between DDS/DVS and NARs for various nutrients. Conclusion. The quality of the respondents’ diets are moderately diversified. DDS or DVS can be used as indicators of micronutrient adequacy in Moroccan T1D children. Nutritional education needs to be strengthened to improve dietary diversity in children, especially in rural areas.
Źródło:
Roczniki Państwowego Zakładu Higieny; 2022, 73, 4; 413-422
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ rodzaju i zawartości tłuszczu na właściwości akustyczne ciastek kruchych
Influence of type and content of fat on acoustic properties of shortbread
Autorzy:
Marzec, A.
Kowalska, H.
Suwinska, S.
Powiązania:
https://bibliotekanauki.pl/articles/36837.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Opis:
Celem pracy było badanie wpływu rodzaju i udziału tłuszczu w recepturze ciastek kruchych na ich właściwości akustyczne. Stosowano margarynę (80,0% tł.) i masło śmietankowe (82,0% tł.), o udziale w recepturze od 19,2 do 82,0% w stosunku do mąki. Przeprowadzono pomiary zawartości i aktywności wody ciastek oraz ich ocenę sensoryczną, metodą punktową. Rejestrację emisji akustycznej (EA) generowanej podczas testu trójpunktowego łamania materiału z prędkością 20 mm·min-1, wykonano techniką kontaktową. Dźwięk analizowano w zakresie częstotliwości od 1 do 18 kHz. Analizowano deskryptory emisji akustycznej (liczbę zdarzeń EA, energię akustyczną, energię zdarzenia EA, maksymalną energię zdarzenia EA, czas trwania dźwięku, amplitudę, współczynnik nachylenia charakterystyki widmowej) oraz parametry sensoryczne (głośność, twardość, jakość ogólną, smak). Wykonano analizę statystyczną uzyskanych wyników metodą składowych głównych (PCA). Rodzaj i udział tłuszczu w recepturze ciastek wpływały na ich właściwości akustyczne. Ciastka z margaryną generowały dźwięki o wyższej energii w paśmie częstotliwości niskich 1-3 kHz i wysokich 13-14 kHz, niż ciastka z masłem śmietankowym, które emitowały dźwięki w paśmie częstotliwości: 1-2 kHz i 15-16 kHz. Zastosowanie statystycznej metody wielowymiarowej PCA do analizy danych pozwoliło na wyodrębnienie dwóch grup ciastek różniących się właściwościami akustycznymi. Grupę ciastek o udziale tłuszczu w recepturze od 19,5 do 32,0% oraz grupę o udziale tłuszczu od 52,8 do 82,0%. Wyższy udział tłuszczu w recepturze ciastek spowodował generację małej liczby zdarzeń, o krótkim czasie trwania i o niskiej energii zdarzenia. Malała również amplituda dźwięku, zaś współczynnik nachylenia charakterystyki widmowej nie wykazywał jednoznacznej tendencji zmian. Ciastka o większym udziale tłuszczu w recepturze postrzegano jako smaczniejsze oraz uzyskały wyższą ogólną ocenę sensoryczną niż ciastka z mniejszym udziałem tłuszczu. Do badania tekstury ciastek kruchych można stosować metodę pomiaru emisji akustycznej generowanej podczas ich łamania.
The aim of this study was to investigate how the type and the share of fat in the shortbread recipe influences the acoustic properties. Margarine (80% fat) and butter (82% fat) were used, in an amounts from 19.2 to 82.0% relative to flour. Measurements of water content and water activity of shortbread were taken, and sensory evaluation was performed with the scoring method. Acoustic emission (EA) generated during the three-point breaking test of the material at a speed of 20 mm min-1 was registered with the contact technique. The sound was analysed in the frequency range from 1 to 18 kHz. Analysis was performed of the acoustic descriptors: number of AE events, acoustic energy, energy of one AE event, the maximum of one AE event, sound duration, amplitude, partition power spectrum slope, and of sensory parameters: loudness, hardness, overall quality, flavour. Statistical analysis of results was conducted with the principal components method (PCA). The type and the share of fat in the shortbread recipe affected the acoustic characteristics. Shortbread with margarine generated sounds of higher energy than shortbread with butter. The spectral characteristic of the AE signal presented activity in 1-3 kHz and 13-14 kHz for shortbread with margarine, and in 1-2 kHz and 15-16 kHz for shortbread with butter. Analysis of the acoustic descriptors of shortbread performed with the statistical method of principal component (PCA) allowed the separation of two groups of shortbread with different acoustic properties. A group with fat content in the shortbread recipe from 19.5 to 32.0%, and a group with fat share from 52.8 to 82.0%. The higher share of fat in the shortbread recipe caused the generation of a small number of events of short duration and low energy of event. Shortbread with the higher share of fat in the recipe were perceived as tastier and received higher sensory scores overall than shortbread with the lower the share of fat in the recipe. The method of registering acoustic emission during the breaking can be used for instrumental texture evaluation of shortbread.
Źródło:
Acta Agrophysica; 2012, 19, 3
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Separator taśmowy - modyfikacja stołów taśmowych typu Vanner zastosowana w Wietnamie
Belt separator – Vanner type separators modification introduced in Vietnam
Autorzy:
Mijał, W.
Nguyen, N.P.
Pham, V.L.
Tran, T.T
Phung, T.T.
Pham, T.H.
Nguyen, H.S.
Powiązania:
https://bibliotekanauki.pl/articles/166768.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Inżynierów i Techników Górnictwa
Tematy:
separator taśmowy
separator typu Vanner
węgiel kamienny
wzbogacanie węgla
próby wzbogacania
górnictwo wietnamskie
belt separator
Vanner type separator
hard coal
coal beneficiation
beneficiation tests
Vietnam’s mining industry
Opis:
Separatory typu Vanner były stosowane głównie do wzbogacania rud takich jak: miedź, ołów, złoto itp.. Konstrukcja tego urządzenia była nietypowa, gdyż był to stół taśmowy, na którym następował rozdział materiału, podobnie jak na klasycznym stole koncentracyjnym. Urządzenie o podobnej konstrukcji jest stosowane do przeróbki węgla kamiennego w wietnamskim przemyśle wydobywczym. Hanoi University of Mining and Geology przeprowadzał wiele testów dla zastosowania tego urządzenia, a w niniejszym artykule zostanie przedstawiona część wyników, jakie uzyskiwano podczas projektowania węzła technologicznego dla węgla płukanego w zakładach Vang Danh i Uong Bi o uziarnieniu 3-20 mm.
Vanner type separators were mainly used to enrich ores such as copper, lead, gold, etc. The construction of this device was atypical, because it was a belt table on which the material was separated like on a classic concentration table. A device of similar construction is used for processing hard coal in the Vietnam’s mining industry. Hanoi University of Mining and Geology has carried out many tests for the use of this device, and this paper presents some of the results obtained during the design of the technological node for the rinsed coal at the Vang Danh and Uong Bi plants with a grain size of 3-20 mm.
Źródło:
Przegląd Górniczy; 2018, 74, 5; 42-47
0033-216X
Pojawia się w:
Przegląd Górniczy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Strut Thickness on Room and High Temperature Compressive Properties of Block-Type Ni-Cr-Al Powder Porous Metals
Autorzy:
Kang, B.-H.
Park, M.-H.
Lee, K.-A.
Powiązania:
https://bibliotekanauki.pl/articles/355591.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Ni-Cr-Al
powder porous metal
strut thickness
high temperature
compressive behavior
Opis:
This study investigated the effect of strut thickness on the room and high temperature compressive properties of block-type Ni-Cr-Al powder porous metals with ~3000 μm pore size manufactured using a new powder process. Two block-type Ni-Cr-Al porous metals with different strut thicknesses were manufactured. The strut thicknesses of two block foams were 340 μm (A) and 383 μm (B), respectively. Room temperature, 500°C, 650°C and 800°C compressive tests were performed. The compressive results identified typical elastic, plateau and densification regions of foam material in all temperature conditions. Regardless of the strut thickness, compressive strength (maximum peak stress) decreased as deformation temperature increased. In all deformation temperature ranges, the compressive strength measured higher in the porous metal with greater strut thickness (B). The high temperature deformation behavior of powder porous metal was confirmed to be affected by the structural factor and microstructural factor of the porous metal. With the findings described above, this study also discussed the high temperature deformation mechanism of the Ni-Cr-Al metal foam based on fracture surfaces after the high temperature compressions.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 2B; 1329-1334
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on a square Cassegrain-type solar concentrating reflector with a double pyramid
Autorzy:
Zhang, Y.
Yang, H.
Jiang, P.
Mao, S.
Yu, M.
Powiązania:
https://bibliotekanauki.pl/articles/174264.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
concentrating reflector
double pyramidal
ray tracing
Opis:
A structure of a solar concentrating reflector is designed in this paper to improve the usage of solar energy. For the dark image which is the result of the secondary mirror in the new type of the Cassegrain solar concentrating system, a double pyramid system is used to improve this phenomenon. By eliminating the dark image, the system enhanced the concentration ratio and the working efficiency. Meanwhile, both the primary and secondary mirrors are shaped into a square section in order to get a better match with a square photovoltaic receiver. While the length of the primary mirror is 89m and the block ratio is 20%, the concentration ratio is equal to 118.86.
Źródło:
Optica Applicata; 2016, 46, 3; 461-471
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heat storing effectiveness with the use of a recuperator in the liquid type battery
Efektywność magazynowania ciepła w akumulatorze cieczowym z wykorzystaniem przeponowego wymiennika ciepła
Autorzy:
Kurpaska, S.
Latała, H.
Baran, D.
Konopacki, P.
Hołownicki, R.
Powiązania:
https://bibliotekanauki.pl/articles/956534.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Inżynierii Rolniczej
Tematy:
heat storing
liquid type battery
recuperator
magazynowanie ciepła
akumulator cieczowy
przeponowy wymiennik ciepła
Opis:
The paper presents results of the analysis concerning the process of storing and discharging the liquid type battery. A system comprising a recuperator, a battery tank, a circulating pump and a ventilator, was analysed. Hot air obtained from the perforated conduits system from the laboratory tunnel was pumped through a recuperator. The heat storing system in the analysed battery cooperated strictly with a stone battery and its priority was to charge it. Tests were carried out from June to August. A detailed analysis included measurement cycles covering both the storing process as well as the process of discharging. Based on the obtained results, thermal power of the exchanger was determined as a function of air temperature difference between the flowing air and water stored in the battery and its flow velocity. Furthermore, quantity relations between the efficiency of work of the exchanger and independent variables of the process: air temperature and water stored in the battery, air flow velocity, process duration and the stream of heat transfer fluid which flows through a recuperator, were determined. Non-linear estimation with the use of quasi-Newton method was applied for determination of these relations. Moreover, the amount of the heat stored in the battery and the heat transferred to the inside of the object were defined. A total coefficient of heat supply with this system was introduced in the analysis. Based on the obtained values of the process performance, it was found out that despite favourable ecological effects, such system of heating support cannot be recommended for horticultural practice on account of a low value of the coefficient. Whereas the use of the storing system for heating process water is justified.
W pracy przedstawiono wyniki analizy z zakresu procesu magazynowania i rozładowywania akumulatora cieczowego. Analizowano system składający się z: przeponowego wymiennika ciepła, zbiornika akumulatora, pompy obiegowej oraz wentylatora. Ciepłe powietrze, pozyskiwane systemem przewodów perforowanych z wnętrza tunelu laboratoryjnego, zatłaczano przez przeponowy wymiennik ciepła. System magazynowania ciepła w analizowanym akumulatorze współpracował ściśle z akumulatorem kamiennym z nadanym priorytetem ładowania akumulatora kamiennego. Badania przeprowadzono w okresie czerwiec- sierpień. Do szczegółowej analizy wyszczególniono cykle pomiarowe obejmujące zarówno proces magazynowania jak i rozładowania akumulatora. Na bazie uzyskanych wyników określono moc cieplną wymiennika, jako funkcję różnicy temperatury powietrza między przepływającym powietrzem a wodą zmagazynowaną w akumulatorze oraz jego prędkości przepływu. Wyznaczono także ilościowe zależności między efektywnością pracy wymiennika a zmiennymi niezależnymi procesu: temperatura powietrza oraz zmagazynowanej wody w akumulatorze, prędkość przepływu powietrza, czas trwania procesu oraz strumień czynnika obiegowego przepływającego przez wymiennik przeponowy. Do określenie zależności zastosowano estymację nieliniową z wykorzystaniem metody quasi-Newtona. Określono również ilość zmagazynowanego ciepła w akumulatorze oraz ciepło przekazane do wnętrza obiektu. W analizie wprowadzono całkowity współczynnik sprawności dostarczania ciepła tym systemem. Na podstawie uzyskanych wartości sprawności procesu stwierdzono, że pomimo korzystnych efektów ekologicznych, taki system wspomagania ogrzewania ze względu na niską wartość współczynnika nie można rekomendować do praktyki ogrodniczej. Uzasadnione zaś jest wykorzystanie systemu magazynowania do ogrzewania wody przeznaczonej na cele technologiczne.
Źródło:
Agricultural Engineering; 2015, 19, 3; 47-57
2083-1587
Pojawia się w:
Agricultural Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
pUC18-CpG stimulates RAW 264.7 via TBK1-mediated pathway and presents adjuvanticity in mice
Autorzy:
Wu, J.
Chen, Q.
Xin, T.
Sun, Y.
Jia, H.
Hou, S.H.
Guo, X.Y.
Powiązania:
https://bibliotekanauki.pl/articles/2087554.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
adjuvant
CpG DNA
Echinococcus granulosus
TBK1
type I interferons
Źródło:
Polish Journal of Veterinary Sciences; 2019, 2; 195-201
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Individuation, reliability, and the mass/count distinction
Autorzy:
Sutton, P. R.
Filip, H.
Powiązania:
https://bibliotekanauki.pl/articles/103819.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Podstaw Informatyki PAN
Tematy:
mass distinction
mount distinction
probabilistic semantics
individuation
reliability
semantic learning
information theory
context-sensitivity
Type Theory with Records
Opis:
Counting in natural language presupposes that we can successfully identify what counts as one, which, as we argue, relies on how and whether one can balance two pressures on learning nominal predicates, which we formalise in probabilistic and information theoretic terms: individuation (establishing a schema for judging what counts as one with respect to a predicate); and reliability (establishing a reliable criterion for applying a predicate). This hypothesis has two main consequences. First, the mass/count distinction in natural language is a complex phenomenon that is partly grounded in a theory of individuation, which we contend must integrate particular qualitative properties of entities, among which a key role is player by those that rely on our spatial perception. Second, it allows us to predict when we can expect the puzzling variation in mass/count lexicalization, cross- and intralinguistically: namely, exactly when the two learning pressures of individuation and reliability conflict.
Źródło:
Journal of Language Modelling; 2017, 5, 2; 303-356
2299-856X
2299-8470
Pojawia się w:
Journal of Language Modelling
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simultaneous detection of astrovirus, rotavirus, reovirus and adenovirus type I in broiler chicken flocks
Autorzy:
Roussan, D.A.
Shaheen, I.A.
Khawaldeh, G.Y.
Totanji, W.S.
Al-Rifai, R.H.
Powiązania:
https://bibliotekanauki.pl/articles/30522.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Enteric diseases cause substantial economic losses to the poultry industry. Astroviruses, rotaviruses, reoviruses, and adenovirus type 1 have been reported as a significant cause of intestinal symptoms in poultry. In the present study, intestinal samples from 70 commercial broiler chicken flocks were examined for the presence of astroviruses, rotavirus, and reovirus by reverse transcription-polymerase chain reaction, and for the presence of group I adenovirus by polymerase chain reaction. Astroviruses were identified in 38.6% of samples tested. Both avian nephritis virus and chicken astrovirus were identified in the astrovirus positive flocks, where 74.1% of these flocks were positive for only one type of astrovirus, whereas, 25.9% of these flocks were positive for both types of astrovirus. Reoviruses, rotaviruses, and adenoviruses were identified in 21.4, 18.6, and 14.3% of these flocks, respectively. Concomitant infection with two or more viruses in the same flock were also prominent, where 5.7, 5.7, 2.9, 2.9, 1.4, and 1.4% of these flocks were positive with both astrovirus and rotavirus; astrovirus and adenovirus; astrovirus and reovirus; rotavirus and adenovirus; rotavirus and reovirus; and reovirus and adenovirus respectively. Moreover, 4.3 and 2.7% of these flocks were positive for astrovirus, reovirus, and adenovirus; and astrovirus, reovirus, and rotavirus, respectively. Further studies will focus on identifying specific viral factors or subtypes/subgroups associated with disease through pathogenesis studies, economic losses caused by infections and co-infections of these pathogens, and the costs and benefits of countermeasures.
Źródło:
Polish Journal of Veterinary Sciences; 2012, 15, 2
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Emergence of an Impulsive CMEs Related To Solar Radio Burst Type III Due To Magnetic Filament Eruption
Autorzy:
Ali, M. Omar
Shariff, N. N. M.
Hamidi, Z. S.
Husien, Nurul Hazwani
Sabri, S. N. U.
Zainol, N. H.
Monstein, C.
Powiązania:
https://bibliotekanauki.pl/articles/1192085.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Sun
Coronal Mass Ejections (CMEs)
solar burst type III
magnetic filament
Opis:
During solar activity the energy particles of the sun released due to solar flare, Coronal Mass Ejections (CMEs), coronal heating as well as sunspot. Solar radio burst will be observed in the presence of solar activity such solar flare, CMEs and solar prominence as the indicator for those events to happen. During the peak of solar cycle, the filaments are present due to the active magnetic field and solar storm’s explosion. This type of solar radio burst normally can be seen in the phase of impulsive solar flare. Therefore, it is crucial to understand field line connectivity in flare and the access of flare accelerated particle to the earth. In this study, we highlighted on the observation of solar radio burst type III on 9th of May at 05:31 UT till 05:44 UT. The event was successfully recoded by e-CALLISTO using BLEINSW radio telescope. The Solar Radio Burst Type III that had been observed was related to the Coronal Mass Ejections and the mechanisms that trigger the events have been discussed. It is shown that the CMEs is believed to happen because of the magnetic filament that connected to active region (AR) 2339 was erupted, and combination of two wild filament produced a bright CMEs. Fortunately, the expanding cloud does not appear to be heading for earth.
Źródło:
World Scientific News; 2016, 37; 168-178
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamics of Automatic Firing System Type Gas-Operated Weapon
Autorzy:
Nguyen, Phon D.
Vo, Bien Van
Nguyen, Phu M.
Tran, Thanh H.
Powiązania:
https://bibliotekanauki.pl/articles/27314927.pdf
Data publikacji:
2023
Wydawca:
Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:
automatic firing system
PKMS machine gun
gas operated weapon
Opis:
The paper presents a new approach to establish a mathematical model of an automatic firing system of gas-operated weapons, which is based on the Lagrange's theory. In contrast to previous studies, a dynamic model is supplemented with dynamic link between a basic mechanism and a receiver assembly with longitudinal clearance without taking into account horizontal clearance. The automatic firing system of the PKMS machine gun has been selected for calculation of a theoretical model and a verification test. Through comparison between theoretical and experimental results, the mathematical model is proven to be accurate and reliable. The results obtained from the paper are the basis for evaluating the automatic firing system ability to work. This is also a reliable source of reference for designers in the process of optimising the structure of the automatic firing system.
Źródło:
Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa; 2023, 14, 4 (54); 9--22
2081-5891
Pojawia się w:
Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The development strategies of the farms in Ukraine
Strategii razvitija fermerskikh khozjajjstv v Ukraine
Autorzy:
Lypchuk, V.
Kozlowa, H.
Powiązania:
https://bibliotekanauki.pl/articles/76455.pdf
Data publikacji:
2013
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
farm
farm type
SWOT analysis
development strategy
agriculture
segmentation
marketing
transformation
Ukraine
Opis:
The peculiarities and determinants, basics and special ways for elaboration and strategy development of farms have been considered in the paper. The necessity for economic, marketing and social criteria when choosing the strategy have been presented. On the basis of SWOT analysis the strategies for farm development taking into account their type and size have been offered: dynamic, existence on the market, exit market and vertical diversification.
В статьерассматриваются особенностиде- терминанты, основы иособенности формированиястра- тегиифермерскиххозяйств. Отмечаетсянеобходимость примененияэкономического, рыночного иобщественногокрите- рнев выборастратегии.Наосновании проведения SWOT-анализа предлагаютсястратегиихозяйствв зависимостиотихтипови- размеров: динамические, пребыванияна рынке, стратегиявыхо- да изрынка ивертикальнойдиверсификации
Źródło:
Motrol. Motoryzacja i Energetyka Rolnictwa; 2013, 15, 1
1730-8658
Pojawia się w:
Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Equation of State of Zircon-Type $TbVO_{4}$
Autorzy:
Minikayev, R.
Paszkowicz, W.
Werner-Malento, E.
Lathe, C.
Dąbkowska, H.
Powiązania:
https://bibliotekanauki.pl/articles/1538929.pdf
Data publikacji:
2010-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.05.cp
62.50.-p
61.50.Ks
64.30.Jk
Opis:
High-pressure energy-dispersive X-ray diffraction study were performed on zircon-type phase of terbium orthovanadate, $TbVO_{4}$, in the pressure range up to 7 GPa. For analysis of the collected diffraction spectra, Le Bail refinements were performed. The values of bulk modulus and its pressure derivative ($B_0$ = 121 GPa, B' = 4.1) were obtained from fitting of the second-order Birch-Murnaghan equation of state. The equation of state derived for $TbVO_{4}$, is compared with earlier data based on the Raman spectroscopic studies and with data of several other rare-earth orthovanadates.
Źródło:
Acta Physica Polonica A; 2010, 117, 2; 319-322
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
General Lebesgue integral inequalities of Jensen and Ostrowski type for differentiable functions whose derivatives in absolute value are h-convex and applications
Autorzy:
Dragomir, Sever
Powiązania:
https://bibliotekanauki.pl/articles/747017.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
Ostrowski's inequality
Jensen's inequality
f-divergence measures.
Opis:
Some inequalities related to Jensen and Ostrowski inequalities for general Lebesgue integral of differentiable functions whose derivatives in absolute value are h-convex are obtained. Applications for f-divergence measure are provided as well.
Źródło:
Annales Universitatis Mariae Curie-Skłodowska, sectio A – Mathematica; 2015, 69, 2
0365-1029
2083-7402
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska, sectio A – Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Architektoniczno-urbanistyczne i społeczne aspekty dostosowania powojennej zabudowy osiedlowej do standardów XXI wieku
Autorzy:
Zaniewska, H.
Powiązania:
https://bibliotekanauki.pl/articles/162996.pdf
Data publikacji:
2013
Wydawca:
Polski Związek Inżynierów i Techników Budownictwa
Tematy:
budownictwo powojenne
zabudowa osiedlowa
rewitalizacja
bariera
post-war construction
settlement-type of land development
revitalization
barrier
Źródło:
Przegląd Budowlany; 2013, R. 84, nr 3, 3; 145-148
0033-2038
Pojawia się w:
Przegląd Budowlany
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of effect of pillars position on longitudinal strength in perintis ship structure type 1200 GT
Autorzy:
Yudo, H.
Abdillah, H. Z.
Zakki, A. F.
Powiązania:
https://bibliotekanauki.pl/articles/2211983.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
cargo liquefication
cargo liquefication accident, bulk carriers
risk of cargo liquefication
sea transportation
biro klasifikasi Indonesia
marine accidents
longitudinal strength
Opis:
Perintis ships are sea transportation highly relied upon by the people in remote, frontier, underdeveloped, and border islands, considering the absence of other types of vehicle operating in the area. Perintis Ships can carry up to 500 people and connect islands categorized as 3TP with larger ports. This ship will be analyzed in longitudinal strength with variations in pillar positions. The analysis results will be compared, and whether the research results allowed the BKI regulatory standards. The maximum stress value produced by the variation without pillars is 21.76 N/m2 in calm water conditions, 41.19 MPa in sagging conditions, and 10.67 MPa in hogging conditions. The variation of the pillars on the side is 21.95 MPa in calm water, 41.54 MPa in sagging conditions, and 10.76 MPa in hogging Conditions. The variation of the pillar in the middle obtained maximum stress 21.96 MPa in calm water conditions, 41.55 MPa in sagging conditions, and 10.77 MPa in hogging conditions. Of all the variations, it has met the criteria of the BKI regulations, where the allowable stress is not to exceed 140.14 MPa. From the analysis that has been done, it can be concluded that the position of the pillar laying does not significantly affect the longitudinal strength of the ship.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2022, 16, 3; 563--571
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Porównanie aktywności fizycznej i diety u kobiet i mężczyzn chorych na cukrzycę typu 2
Physical activity and dietary profile of females and males with type 2 diabetes
Autorzy:
Medrela-Kuder, E.
Bis, H.
Powiązania:
https://bibliotekanauki.pl/articles/3818.pdf
Data publikacji:
2014
Wydawca:
Instytut Medycyny Wsi
Opis:
Cukrzyca typu 2 zaliczana jest do chorób przewlekłych niezakaźnych. W powstawaniu tego schorzenia zasadniczą rolę odgrywają predyspozycje genetyczne oraz czynniki środowiskowe. Wśród nich należy wymienić styl życia, sposób żywienia, niską aktywność fizyczną, wiek, otyłość i inne. Celem pracy było porównanie aktywności fizycznej i diety u kobiet i mężczyzn chorych na cukrzycę typu 2. Badania przeprowadzono w poradniach diabetologicznych w województwie małopolskim od kwietnia 2011 do lutego 2012 roku. Do badań zakwalifikowano 120 pacjentów (60 kobiet i 60 mężczyzn) z rozpoznaną cukrzycą typu 2. Wśród ankietowanych przeprowadzono anonimową ankietę, która zawierała pytania dotyczące stylu życia badanych. Większość kobiet i mężczyzn deklarowała bierny sposób spędzania wolnego czasu. Zdecydowana większość ankietowanych 70% respondentek i 63% respondentów oglądała programy w telewizji od 2 do 5 godzin dziennie. Większość badanych stosowała prawidłową dietę: planowała skład i kaloryczność posiłków, nie słodziła napojów oraz konsumowała posiłki o stałej porze dnia. Mężczyźni częściej niż kobiety popełniali błędy takie jak: dosalanie potraw, konsumpcja tłustego mięsa, mięsa wieprzowego, spożywanie tłustych kiełbas i słodyczy. Należy poszerzyć edukację pacjentów z zakresu stosowania aktywności ruchowej i odpowiedniej diety w cukrzycy i profilaktyce innych chorób przewlekłych. Należy opracować programy aktywności fizycznej u pacjentów, gdyż większość badanych deklarowała bierny sposób wypoczynku.
Type 2 diabetes is classified into chronic, non-communicable diseases, the development of which genetic predispositions and environmental factors, including life style, dietary habits, low physical activity, age and obesity play a primary role. The objective of the project was to compare physical activity and dietary habits of females and males with type 2 diabetes. The study was conducted during the period from April 2011 – February 2012 in the diabetes outpatient departments in the Krakow Region, and covered 120 patients (60 females and 60 males) with the diagnosis of type 2 diabetes. An anonymous questionnaire served as the source of information on the lifestyles of the respondents. An anonymous survey was carried out containing items concerning the respondents’ life style. The majority of respondents declared a passive way of spending leisure time, as many as 70% of females and 63% of males watched television for 2–5 hours daily. At the same time, most of the respondents applied adequate diet: planned the composition and caloric content of meals, did not sweeten beverages and consumed meals at regular times of the day. Males more frequently than females committed dietary errors, such as salting foods, consumption of fatty pork meat and sausages, and sweets. The present study confirms the need for extended patient education with regard to the role of physical activity and adequate diet in type 2 diabetes and prevention of other chronic diseases. Furthermore, physical activity programmes for patients should be developed in view of the declared sedentary leisure time preferences.
Źródło:
Medycyna Ogólna i Nauki o Zdrowiu; 2014, 20(49), 1
2083-4543
Pojawia się w:
Medycyna Ogólna i Nauki o Zdrowiu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impedance spectroscopy in H2 sensing with TiO2/SnO2 nanomaterials
Autorzy:
Szafraniak, Bartłomiej
Kusior, Anna
Radecka, Marta
Zakrzewska, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/221225.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
impedance spectroscopy
TiO2
SnO2
hydrogen detection
resistive-type gas sensors
Opis:
Alternating current a.c. measurements enable to understand the physical and chemical processes occurring in semiconductor materials. Impedance spectroscopy has been successfully applied to study the responses of gas sensors based on metal oxides, such as TiO2, SnO2 and TiO2/SnO2 nanocomposites. This work is devoted to dynamic measurements of hydrogen sensor behaviour over the temperature range of 300-450°C. Frequency dependence of the impedance signal gives evidence that 50 mol% TiO2/50 mol% SnO2 nanocomposites should be treated as resistive-type sensors. Temporal evolution of the response to 500 ppm H2 at 320°C indicates a very short response time and much longer recovery.
Źródło:
Metrology and Measurement Systems; 2020, 27, 3; 417-425
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rola paciorkowców mlekowych i pałeczek propionowych w procesie dojrzewania sera typu szwajcarsko-holenderskiego
Role of lactic acid cocci and propionic acid rods in swiss-dutch type cheese ripening process
Autorzy:
Miks-Krajnik, M.H.
Powiązania:
https://bibliotekanauki.pl/articles/825720.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Technologów Żywności
Opis:
Sery dojrzewające typu szwajcarsko-holenderskiego są serami produkowanymi z zastosowaniem paciorkowców fermentacji mlekowej: Lactococcus spp., Leuconostoc spp. oraz pałeczek propionowych Propionibacterium spp. Kultury starterowe oraz środowisko sera dojrzewającego tworzą bardzo złożony, a jednocześnie dynamiczny układ. Procesy biotechnologiczne zachodzące w matrycy sera dojrzewającego w warunkach przemysłowych zależą głównie od stanu fizjologicznego zastosowanych drobnoustrojów. Metabolizm komórek bakterii nadaje kierunek prowadzonym w środowisku przemianom biochemicznym i enzymatycznym, kształtując tym samym pożądane cechy produktu.
Swiss-Dutch type cheeses are produced with the use of lactic acid streptococci: Lactococcus spp., Leuconostoc spp., and propionic acid rods of Propionibacterium spp. Starter cultures and the environment of ripening cheese create a very complex and, at the same time, a dynamic system. Biotechnological processes occurring in the matrix of cheese ripening under the industrial conditions mainly depend on the physiological state of the micro-organisms applied. The metabolism of bacterial cells governs the biochemical and enzymatic changes occurring in the cheese environment, thus, it models the desirable characteristics of the product.
Źródło:
Żywność Nauka Technologia Jakość; 2012, 19, 1
1425-6959
Pojawia się w:
Żywność Nauka Technologia Jakość
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wypływy typu JET z instalacji procesowych
JET type out flow from process installations
Autorzy:
Krokos, R.
Dziubiński, M.
Fidos, H.
Powiązania:
https://bibliotekanauki.pl/articles/2071207.pdf
Data publikacji:
2010
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
wypływ ze zbiornika
ciecze nienewtonowskie
obrót strugi
vessel outflow
non-Newtonian liquids
stream turnover
Opis:
Przedstawiono wyniki badań mających na celu opis wypływów awaryjnych typu jet oraz geometrii wypływającej strugi cieczy ze szczelin o różnym kształcie. Zaobserwowano zjawisko obrotu o 180° wypływającego ze zbiornika strumienia cieczy. Zjawisko to obserwowano dla wszystkich przebadanych szczelin wypływowych i mediów doświadczalnych. Odległość miejsca obrotu strugi zależała wyłącznie od bezwzględnej długości szczeliny i nadciśnienia w zbiorniku. Zaproponowano opis matematyczny zjawiska.
Experimental data concerningjet type outflow from a vessel and geometry of liquid stream outflowing from cracks of different shapes were presented in the paper. A phenomenon of 180° turn of liquid stream outflowing from tank cracks for every examined cracks shape and liquids were observed. A distance from the crack in tank wall to the turn point depended on the crack absolute length and vessel overpressure. The mathematical description of phenomenon was proposed.
Źródło:
Inżynieria i Aparatura Chemiczna; 2010, 3; 61-62
0368-0827
Pojawia się w:
Inżynieria i Aparatura Chemiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improvement of Microwave Absorbance of Polymer Composites of W-Type Hexaferrite Powders by Attachment of Frequency Selective Surface
Autorzy:
Cho, H.-S.
Kim, S.-S.
Powiązania:
https://bibliotekanauki.pl/articles/352824.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
frequency selective surface
microwave absorbers
hexaferrite powders
polymer composites
Opis:
This work investigates the effect of a frequency selective surface (FSS) composed of a regular array of square loop elements on the absorption properties of grounded ferrite composites. Polymer matrix composites of CoZnW hexaferrite powders having small magnetic loss were used as the substrate material. Computational tools were used to model the interaction between electromagnetic waves and materials and determine the reflection coefficient. Reflection loss and bandwidth were greatly improved by attaching an FSS with controlled electrical resistance (R) onto the grounded ferrite composites. For the FSS with R = 800 Ω, the minimum reflection loss decreased to –25 dB at 10 GHz and the bandwidth was broadened to 7.5-12.5 GHz with respect to –10 dB reflection loss.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 2B; 1325-1328
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Formation of Fundamental Structure of Solar Radio Burst Type II Due X6.9 Class Solar Flare
Autorzy:
Zainol, N. H.
Hamidi, Z. S.
Shariff, N. N. M.
Ali, Marhana Omar
Husien, Nurulhazwani
Sabri, S. N. U.
Monstein, C.
Powiązania:
https://bibliotekanauki.pl/articles/1190115.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Sun
solar burst
type II
radio region
X-ray region
solar flare
Coronal Mass Ejections (CMEs)
Opis:
A vigorous solar flare event marked on the spectrometer of the CALLISTO data, being one of the highest solar flare event that successfully detected. The formation of solar burst type II in meter region and their associated with X6. 9-class solar flares have been reported. The burst has been observed at the Blein Obsevatory, Switzerland, which detected by the Compound Astronomical Low-cost Low-frequency Instrument for Spectroscopy and Transportable Observatory (CALLISTO) system in the range of 170-870 MHz in the two polarizations of left and right circular polarization. It occurred between 08:01 UT to 08:08 UT within 7 minutes. The Compound Astronomical Low-cost Low-frequency Instrument for Spectroscopy and Transportable Observatory CALLISTO spectrometer is a solar dedicated spectrometer system that has been installed all over the world to monitor the Sun activity in 24 hours. The growth of this burst is often accompanied by abundance enhancement of particles which may take the form of multiple independent drifting bands or other forms of fine structure. Due to the results, the drift rate of this burst is 85.71 MHz s-1, which is considered as a fast drift rate. The burst detected using CALLISTO also being compared to results detected by X-ray GOES data. Both different electromagnetic spectrum shows the exact time. The observations of the burst being discussed in details.
Źródło:
World Scientific News; 2016, 35; 30-43
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Enlargement of Type II Burst After Type III at AR 12522 on 16th March 2016 In Conjunction With Flare-Related Coronal Mass Ejections Event
Autorzy:
Husien, Nurulhazwani
Hamidi, Z. S.
Shariff, N. N. M.
Ali, M. O.
Zainol, N. H.
Sabri, S. N. U.
Monstein, C.
Powiązania:
https://bibliotekanauki.pl/articles/1178545.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Coronal Mass Ejections
Sun
X-ray emission
Opis:
On 16th March 2016 the solar radio burst type II is recorded to appear on spectrograph after the type III formation. These two bursts related to the Coronal Mass Ejections (CMEs) event that recorded by the SOHO spacecraft several minutes before the formation of Type III on the spectrograph. It has been reported that the Type III burst a fast drift compared to the Type II burst. In this paper, the calculation has been proved that the type III burst has a higher drift rate compared to Type II. These two events of Type II and III burst also has been contributing to the formation of C class flare with magnitude of C2.2 It is also proven that the type III burst has a fast drift rate compared to type II burst. In this case, the type III has a fast drift rate of 81% compared to the type II burst. During this event, the active region AR 12522 erupted the C-class X-ray emission with magnitude of C2.2 contribute to these type III and II burst
Źródło:
World Scientific News; 2017, 70, 2; 230-240
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Broad Band THz Sensing by 2DEG Bow-Tie-Type Diodes
Autorzy:
Valušis, G.
Seliuta, D.
Tamošiūnas, V.
Širmulis, E.
Balakauskas, S.
Gradauskas, J.
Sužiedėlis, A.
Ašmontas, S.
Anbinderis, T.
Narkūnas, A.
Papsujeva, I.
Lisauskas, A.
Roskos, H. G.
Köhler, K.
Powiązania:
https://bibliotekanauki.pl/articles/2041684.pdf
Data publikacji:
2005-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
73.50.-h
85.30.De
72.30.+q
Opis:
We suggest a novel approach to detect broad band, 0.078-2.52 THz, electromagnetic radiation at room temperature using an asymmetrically-shaped bow-tie diode based on a modulation-doped GaAs/AlGaAs structure. We show that the voltage sensitivity in the range from 0.078 THz up to 0.8 THz has a plateau and its value is within 0.3-0.5 V/W. We consider the bow-tie diode design to increase the sensitivity of the device.
Źródło:
Acta Physica Polonica A; 2005, 107, 1; 184-187
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Expression of IFN-λ1 from Congjiang pigs and its effect on anti-PRRSV proliferation
Autorzy:
Xin-qin, J.
Biao, W.
Zhi-qiang, D.
Yong, R.
Yan, H.
Meng-qiu, H.
Shan-shan, D.
Yu-jie, T.
Powiązania:
https://bibliotekanauki.pl/articles/2087291.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
porcine ifn-λ1
porcine type III interferon
eukaryotic expression
anti-proliferation
Źródło:
Polish Journal of Veterinary Sciences; 2020, 23, 3; 423-430
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-100 z 211

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