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Wyświetlanie 1-15 z 44
Tytuł:
Application of tanh method to complex coupled nonlinear evolution equations
Autorzy:
Abdelkawy, M.
Bhrawy, A.
Zerrad, E.
Biswas, A.
Powiązania:
https://bibliotekanauki.pl/articles/1070617.pdf
Data publikacji:
2016-03
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
02.30.Ik
02.30.Jr
05.45.Yv
Opis:
This paper studies the application of tanh method to address a few coupled nonlinear evolution equations that are in complex domain. There are soliton solutions as well as triangular solutions that are revealed with this integration scheme. The equations studied in this paper are applicable to various branches of applied and theoretical physics.
Źródło:
Acta Physica Polonica A; 2016, 129, 3; 278-283
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Does silicon increase the tolerance of a sensitive pepper genotype to salt stress?
Autorzy:
Altuntas, O.
Dasgan, H.Y.
Akhoundnejad, Y.
Kutsal, I.K.
Powiązania:
https://bibliotekanauki.pl/articles/12711848.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Opis:
We evaluated the growth performance, ion regulation, osmotic potential, and chlorophyll content of two pepper (Capsicum annuum) genotypes with different salinity tolerance levels (Karaisali is tolerant and Demre is sensitive to salinity) under saline conditions with the application of silicon (Si). Plants were grown in pots filled with vermiculite in control or saline conditions [150 mM sodium chloride (NaCl)] with or without 2 mM Si from potassium silicate for 60 days after sowing. Better growth effects due to Si application were observed in the sensitive pepper Demre than in Karaisali, particularly, the root and fruit growth were remarkably enhanced in Demre. Furthermore, Si application reduced sodium (Na) and chloride (Cl) concentrations and increased potassium (K) and calcium (Ca) concentrations in the leaves and roots. The reduction in Na concentration in the leaves due to Si application was 9% and 2% in Demre and Karaisali, respectively. Under saline conditions, the increase in K concentration due to Si application in the leaves was 11% and 14% in Demre and Karaisali, respectively. In addition, Si application resulted in an increase in K/Na ratios in the leaves by 22% and 17% in Demre and Karaisali, respectively, in the presence of 150 mM NaCl. The increase in Ca concentration in the roots due to Si application was 55% in Demre compared with only 9% in Karaisali. The addition of NaCl decreased the chlorophyll concentration in both the genotypes, but Si application increased it. This increase in chlorophyll concentration was higher in Demre than in Karaisali. Si application allowed both the genotypes to maintain higher osmotic potentials than those in untreated plants. As a result, it may be claimed that under salt stress, Si application has a more alleviative effect on the susceptible pepper genotypes (Demre) than on the tolerant one (Karaisali). This information could be useful for the practical application of Si under saline conditions.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2020, 19, 2; 87-96
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of Superior Thermal Protective Coating on Carbon Composites
Autorzy:
Bae, Soo Bin
Lee, Ji Eun
Paik, Jong Gyu
Cho, Nam Choon
Lee, Hyung Ik
Powiązania:
https://bibliotekanauki.pl/articles/354076.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
composite
silicon carbide
CVR
CVD
Opis:
A superior SiC based thermal protection coating process for carbon composite, which can be especially effective in a hot oxidizing atmosphere, was established in this study. A multi-coating process based on a combination of Chemical Vapor Reaction (CVR) and Chemical Vapor Deposition (CVD) was developed. Various protective coating layers on carbon composite were tested in hot oxidizing surroundings and the test results verified that the thermal ablation rate could be dramatically reduced down to 3.8% when the protective multi-coating was applied. The thermal protection mechanism of the coating layers was also investigated.
Źródło:
Archives of Metallurgy and Materials; 2020, 65, 4; 1371-1375
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Laboulbeniales (Ascomycetes) from Latvia
Gatunki Laboulbeniales (Ascomycetes) z terenu Łotwy
Autorzy:
De Kesel, A.
De Kesel, I.K.
Powiązania:
https://bibliotekanauki.pl/articles/67072.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Botaniczne
Opis:
This contribution presents new and historical data on the Laboulbeniales of Latvian Coleoptera. An annotated checklist of 26 taxa is given, 13 are new for Latvia. Only six taxa (accepted names) from Briedis’ historical list were found again and six more need to be confirmed as Briedis’ material was lost. A neotype is indicated here for the extremely rare Laboulbenia elaphricolaSiemaszko et Siemaszko. Its morphology is discussed and compared with Laboulbenia elaphriSpegazzini and Laboulbenia vulgaris Peyr.
W artykule przedstawiono zarówno nowe jak i historyczne dane o gatunkach Laboulbeniales występujących na łotewskich Coleoptera, przede wszystkim na Carabidaei Staphylinidae. Odnotowano 26 gatunków, z których 13 jest nowych dla Łotwy. Pierwsza lista gatunków Laboulbeniales z Łotwy została opublikowana w roku 1932 przez Briedisa w Acta Horti Botanici Universitatis Latviensis. Kolekcja Briedisa najprawdopodobniej zaginęła. Sześć potwierdzonych taksonów z listy Briedisa zostało na nowo odnalezionych, a dalsze sześć należy odszukać. Krytyczna lista 26 gatunków zawiera również uwagi taksonomiczne dotyczące m. in. Laboulbenia elaphricolaSiemaszko et Siemaszko.
Źródło:
Acta Mycologica; 2006, 41, 1
0001-625X
2353-074X
Pojawia się w:
Acta Mycologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hints on the Hirota Bilinear Method
Autorzy:
Goldstein, P.
Powiązania:
https://bibliotekanauki.pl/articles/1814021.pdf
Data publikacji:
2007-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
02.30.Ik
42.81.Dp
Opis:
We discuss four stages of the Hirota bilinear method, for construction of soliton solutions to partial differential equations: the proper substitution to express the equation in the bilinear variables (1), reduction of the excess degrees of freedom (2), the perturbation scheme (3), and solution of the system of equations at the successive orders of magnitude (4). For the first stage we suggest an extension of the well-known singularity analysis. In the second stage we point out the need for caution to avoid overdetermined systems. In the third one we suggest a path to proper assumptions on the orders of magnitude of the unknown functions. Finally, we summarize the question of the choice of appropriate solutions. For the expansions at the stages (1) and (3) we suggest a 'renormalization', i.e. completion of the lower order terms with higher order ones to achieve the desired form of the coefficients.
Źródło:
Acta Physica Polonica A; 2007, 112, 6; 1171-1184
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New Applications of the (G/G,1/G)-Expansion Method
Autorzy:
Inan, I.
Ugurlu, Y.
Inc, M.
Powiązania:
https://bibliotekanauki.pl/articles/1401446.pdf
Data publikacji:
2015-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
02.30.Ik
02.30.Jk
05.45.Yv
Opis:
In this paper, we study general solutions of the new fifth order nonlinear evolution and the Burgers KP equations with the aid of the two variables (G'/G,1/G)-expansion method. The kink, bell-shaped solitary wave, periodic and singular periodic solutions are obtained. Finally, the numerical simulations add to these obtained solutions.
Źródło:
Acta Physica Polonica A; 2015, 128, 3; 245-251
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exact Solutions and Conservation Laws of the Bogoyavlenskii Equation
Autorzy:
Inc, M.
Hashemi, M.
Isa Aliyu, A.
Powiązania:
https://bibliotekanauki.pl/articles/1029868.pdf
Data publikacji:
2018-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
02.30.Ik
02.30.Jr
47.35.Fg
Opis:
In this paper, the Lie symmetry analysis method is performed for a Bogoyavlenskii equation. The symmetries and exact invariant solutions for the equation are retrieved for the first time. The conservation laws of the Bogoyavlenskii equation are constructed using the conservation laws theorem introduced by Ibragimov.
Źródło:
Acta Physica Polonica A; 2018, 133, 5; 1133-1137
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The social vole [Microtus socialis] as a zoonotic reservoir of Babesia microti in steppe zone of Ukraina
Autorzy:
Karbowiak, G.
Wita, I.
Czaplinska, U.
Polishchuk, I.K.
Powiązania:
https://bibliotekanauki.pl/articles/838857.pdf
Data publikacji:
1998
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
parasite
Ukraine
Babesia microti
social vole
vole
Microtus socialis
Europe
rodent
small mammal
Źródło:
Annals of Parasitology; 1998, 44, 3
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Trypanosoma [Herpetosoma] sp. in the social vole [Microtus socialis] for first time in Ukraine
Autorzy:
Karbowiak, G.
Wita, I.
Czaplinska, U.
Polishchuk, I.K.
Powiązania:
https://bibliotekanauki.pl/articles/837245.pdf
Data publikacji:
1998
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
parasite
Ukraine
blood
social vole
vole
Trypanosoma microti
Microtus socialis
small mammal
Źródło:
Annals of Parasitology; 1998, 44, 3
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Process Variables on Friction Stirred Microstructure and Surface Hardness of AZ31 Magnesium Alloy
Autorzy:
Kim, Jae-Yeon
Hwang, Jung-Woo
Lee, Seung-Mi
Hyun, Chang-Young
Park, Ik-Keun
Byeon, Jai-Won
Powiązania:
https://bibliotekanauki.pl/articles/355106.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
friction stir process
AZ31 alloy
diamond particle
process variable
grain size
Opis:
Effects of various friction stir processing (FSP) variables on the microstructural evolution and microhardness of the AZ31 magnesium alloy were investigated. The processing variables include rotational and travelling speed of the tool, kind of secondphase (i.e., diamond, Al2 O3 , and ZrO2 ) and groove depth (i.e., volume fraction of second phase). Grain size, distribution of second phase particle, grain texture, and microhardness were analyzed as a function of the FSP process variables. The FSPed AZ31 com-posites fabricated with a high heat input condition showed the better dispersion of particle without macro defect. For all composite specimens, the grain size decreased and the microhardness increased regardless of the grooved depth compared with that of the FSPed AZ31 without strengthening particle, respectively. For the AZ31/diamond composite having a grain size of about 1 μm, microhardness (i.e., about 108 Hv) was about two times higher than that of the matrix alloy (i.e., about 52 Hv). The effect of second phase particle on retardation of grain growth and resulting hardness increase was discussed.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 3; 907-911
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of Si Addition on Microstructure and Mechanical Properties of the Al Alloys with High Cr Content Prepared by Gas Atomization and SPS Processes
Autorzy:
Kim, Yong-Ho
Oh, Ik-Hyun
Yoo, Hyo-Sang
Park, Hyun-Kuk
Lee, Jung-Han
Son, Hyeon-Taek
Powiązania:
https://bibliotekanauki.pl/articles/354961.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Al-Cr-Si
gas atomization
spark plasma sintering
powder
rapid solidification
Opis:
This research describes effects of Si addition on microstructure and mechanical properties of the Al-Cr based alloys prepared manufactured using gas atomization and SPS (Spark Plasma Sintering) processes. The Al-Cr-Si bulks with high Cr and Si content were produced successfully using SPS sintering process without crack and obtained fully dense specimens close to nearly 100% T. D. (Theoretical Density). Microstructure of the as-atomized Al-Cr-Si alloys with high contents of Cr and Si was composed multi-phases with hard and thermally stable such as Al13Cr4Si4, AlCrSi, Al8Cr5 and Cr3Si intermetallic compounds. The average hardness values were 703 Hv for S5, 698 Hv for S10 and 824 Hv for S20 alloy. Enhancement of hardness value was resulted from the formation of the multi-intermetallic compound with hard and thermally stable and fine microstructure by the addition of high Cr and Si using rapid solidification and SPS process.
Źródło:
Archives of Metallurgy and Materials; 2020, 65, 3; 1045-1049
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 44

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