排序方式: 共有44条查询结果,搜索用时 171 毫秒
31.
Anjan Biswas Essaid Zerrad 《Communications in Nonlinear Science & Numerical Simulation》2009,14(9-10):3574-3577
In this paper, the Zakharov–Kuznetsov equation, with dual-power law nonlinearity is solved by using the solitary wave ansatze and 1-soliton solution is obtained. Using this soliton solution, a couple of conserved quantities, of this equation, are calculated. 相似文献
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Touazi Ahmed Amin Khellili Essaid Didaoui Saéda Khimeche Kamel Benziane Mokhtar 《Journal of Thermal Analysis and Calorimetry》2018,134(2):1223-1242
Journal of Thermal Analysis and Calorimetry - Accurate experimental isobaric densities and viscosities data between 288.15 and 318.15 K at 5 K intervals for five binary liquid... 相似文献
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Russell Kohl Anjan Biswas Daniela Milovic Essaid Zerrad 《International Journal of Theoretical Physics》2008,47(7):2038-2064
The dynamics of super-sech solitons in dispersion-managed optical fibers is obtained in this paper. The dynamical system of
soliton parameters is obtained for such pulses for dispersion-managed fibers, in presence of various perturbation terms. The
perturbation terms studied are Hamiltonian, as well as non-Hamiltonian along with non-local types. 相似文献
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In this paper, we obtain an exact 1-soliton solution of the Zakharov–Kuznetsov equation, with power law nonlinearity, by the solitary wave ansatz method. A couple of conserved quantities of this equation are also calculated by using this 1-soliton solution. 相似文献
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Canneaux S Louis F Ribaucour M Minetti R El Bakali A Pauwels JF 《The journal of physical chemistry. A》2008,112(26):6045-6052
The rate constant of the benzylperoxy isomerization reaction has been computed using 54 different levels of theory and has been compared to the experimental value reported at 773 K. The aim of this methodology work is to demonstrate that standard theoretical methods are not adequate to obtain quantitative rate constants for the reaction under study. The use of the elaborated CASPT2 method is essential to estimate a quantitative rate constant. Geometry optimizations and vibrational frequency calculations are performed using three different methods (B3LYP, MPW1K, and MP2) and six different basis sets (6-31G(d,p), 6-31+G(d,p), 6-31++G(d,p), 6-311G(d,p), 6-311+G(d,p), and cc-pVDZ). Single-point energy calculations are performed with the highly correlated ab initio coupled cluster method in the space of single, double, and triple (pertubatively) electron excitations CCSD(T) using the 6-31G(d,p) basis set, and with the CASPT2 level of theory with the ANO-L-VDZP basis set. Canonical transition-state theory with a simple Wigner tunneling correction is used to predict the high-pressure limit rate constants as a function of temperature. We recommend the use of the CASPT2/ANO-L-VDZP//B3LYP/cc-pVDZ level of theory to compute the temperature dependence of the rate constant of the four-center isomerization of the benzylperoxy radical. It is given by the following relation: k(600-2000 K) (in s (-1)) = (1.29 x 10 (10)) T (0.79) exp[(-133.1 in kJ mol (-1))/ RT]. These parameters can be used in the thermokinetic models involving aromatic compounds at high pressure. This computational procedure can be extended to predict rate constants for other similar reactions where no available experimental data exist. 相似文献
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Feyisara Eyiwumi Oni Qassim Esmaeel Joseph Tobias Onyeka Rasheed Adeleke Cedric Jacquard Christophe Clement Harald Gross Essaid Ait Barka Monica Hfte 《Molecules (Basel, Switzerland)》2022,27(2)
Pseudomonas lipopeptides (Ps-LPs) play crucial roles in bacterial physiology, host–microbe interactions and plant disease control. Beneficial LP producers have mainly been isolated from the rhizosphere, phyllosphere and from bulk soils. Despite their wide geographic distribution and host range, emerging evidence suggests that LP-producing pseudomonads and their corresponding molecules display tight specificity and follow a phylogenetic distribution. About a decade ago, biocontrol LPs were mainly reported from the P. fluorescens group, but this has drastically advanced due to increased LP diversity research. On the one hand, the presence of a close-knit relationship between Pseudomonas taxonomy and the molecule produced may provide a startup toolbox for the delineation of unknown LPs into existing (or novel) LP groups. Furthermore, a taxonomy–molecule match may facilitate decisions regarding antimicrobial activity profiling and subsequent agricultural relevance of such LPs. In this review, we highlight and discuss the production of beneficial Ps-LPs by strains situated within unique taxonomic groups and the lineage-specificity and coevolution of this relationship. We also chronicle the antimicrobial activity demonstrated by these biomolecules in limited plant systems compared with multiple in vitro assays. Our review further stresses the need to systematically elucidate the roles of diverse Ps-LP groups in direct plant–pathogen interactions and in the enhancement of plant innate immunity. 相似文献
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This paper obtains the 1-soliton solution to Zakharov equation with power law and dual-power law nonlinearities. The He’s variational principle is used to carry out the integration of this equation. 相似文献
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