Results 11 to 20 of about 3,543 (266)
Kongjian kexue xuebao, 2023 在微重力条件下，双自由面液层是实现新型材料晶体生长的一种潜在方式，对其流动进行稳定性分析对于薄膜结晶等应用具有重要意义。本文采用线性稳定性理论研究了黏弹性双自由面热毛细液层的不稳定性。在不同Prandtl数(Pr)下得到临界Marangoni数(Mac)与弹性数(ε)的函数关系，并分析了临界模态的流场和能量机制。研究发现流场存在三种临界模态，分别是斜波、流向波和展向稳态，且三者均受弹性影响。小和高Pr的临界模态为斜波和流向波。在中等Pr下，随着ε的增加，临界模态由斜波变为流向波，最终变为展向稳态模态 ...
胡 棚辉, 胡 开鑫
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Transition to conservation agriculture: how tillage intensity and covering affect soil physical parameters [PDF]
SOIL, 2022 Conservation agriculture (CA) relies on the following three key practices to improve agricultural sustainability: crop rotation, reduced tillage, and cover crop usage.
F. Sartori +3 more
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IEEE Photonics Journal, 2019 The regular perturbation (RP) series used to analytically approximate the solution of the nonlinear Schrodinger equation has a serious energy-divergence problem when truncated to the first order.
O. S. Sunish Kumar +3 more
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Sensors, 2021 A reflectarray antenna with an optimized sectorial beam is designed for the surveillance channel of a DVB-S-based passive radar (PR). The employment of satellite illuminators requires a high gain antenna to counteract the losses due to the great distance
Javier Rosado-Sanz +5 more
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Entropy, 2022 As computational fluid dynamics (CFD) advances, entropy generation minimization based on CFD becomes attractive for optimizing complex heat-transfer systems.
Xianglong Yang, Lei Yang
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Near-yrast structure of odd-
Physical Review C, 2012 The neutron-rich praseodymium isotopes 151Pr and 153Pr have been studied by prompt γ-ray spectroscopy using 248Cm and 252Cf spontaneous-fission sources placed inside the EUROGAM-II and Gammasphere germanium arrays, respectively. Rotational bands based on 3/2 -[541] states, with similar structures, have been assigned to these nuclei.
Malkiewicz, T. +12 more
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Asymptotic behavior of some statistics in Ewens random permutations [PDF]
Discrete Mathematics & Theoretical Computer Science, 2012 The purpose of this article is to present a general method to find limiting laws for some renormalized statistics on random permutations. The model considered here is Ewens sampling model, which generalizes uniform random permutations.
Valentin Feray
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Molecules, 2023 Although heterogeneous photocatalysis has shown promising results in degradation of contaminants of emerging concern (CECs), the mechanistic implications related to structural diversity of chemicals, affecting oxidative (by HO•) or reductive (by O2 ...
Antonija Tomic +5 more
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Energy shifts of
Physical Review A, 1974 The energy shifts of Kα2, Kα1, Kβ3, Kβ1, and Kβ2 x rays were measured for the following Ru, Pr, and Yb compounds: Ru, Ru(CO2)Cl2, RuO2, [Ru(NH3)4OHCl]Cl · 2H2O, and RuF3; Pr, PrC2, Pr2O3, PrFeO3, Pr6O11, PrO2, CsPrF5, and Cs2PrF6, Yb, YbF3, and Yb2O3. The results are compared with free-ion relativistic self-consistent-field calculations.
Lee, P. L., Boehm, F., Vogel, P.
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Separations, 2023 In this study, the enhanced photodegradation of a high-concentration phenol red (PR) using very fine TiO2 nanocrystals by adding a KBrO3 electron acceptor was reported for the first time. The structural study on TiO2 nanocrystals using HRTEM, XRD, Raman,
Najla Khaled Almulhem +2 more
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