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Search Results: 1 - 10 of 159264 matches for " WANG Hong-Min "
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Laser pulse control of bridge state electron transfer in heterogeneous structures
异质结中桥分子电子转移的飞秒激光控制研究

Zhao Hong-Min,Wang Lu-Xia,
赵红敏
,王鹿霞

物理学报 , 2009,
Abstract: Combined with one-dimensional reduced vibrational model and optimal control theory, the heterogeneous electron transfer in bridge mediated systems is theoretically studied. Laser pulse control of heterogeneous system with single bridge and double parallel bridges are simulated, the the dynamic process and the optimal pulse are analysed. The influence of bridge molecules on the ultrafast electron transfer path is also discussed.
Key Parameter Study of 65Mn Steel in Warm Rolling
Zhi-Jie Li,Yan Peng,Hong-Min Liu,Su-Fen Wang
Research Journal of Applied Sciences, Engineering and Technology , 2013,
Abstract: For study warm rolling process, warm compression experiment of ferrite combined with pearlite colony was conducted using the Gleeble-3500 thermal/mechanical simulator system. The warm deformation was carried out at temperature (500~700°C) and the strain rate (0.001~10/sec). Based on the flow stress data, the key parameter was calculated. The results show that the warm-working process of carbon steel conforms to hyperbolic sine equation. The relationship of and T could be described by parameter Z (temperature compensation of strain rate factor). The value of apparent n (stress index) and Q (deformation activation energy) was calculated, the draught pressure calculated was 1.87×104 t during warm rolling process at 600°C.
Electroacupuncture at Zusanli (ST36) Prevents Intestinal Barrier and Remote Organ Dysfunction following Gut Ischemia through Activating the Cholinergic Anti-Inflammatory-Dependent Mechanism
Sen Hu,Ming-Hua Du,Hong-Min Luo,Huan Wang
Evidence-Based Complementary and Alternative Medicine , 2013, DOI: 10.1155/2013/592127
Abstract:
Vortex state in iron-based superconductors with collinear antiferromagnetic cores
Hong-Min Jiang,Jian-Xin Li,Z. D. Wang
Physics , 2009, DOI: 10.1103/PhysRevB.80.134505
Abstract: Magnetism in the FeAs stoichiometric compounds and its interplay with superconductivity in vortex states are studied by self-consistently solving the BdG equations based on a two-orbital model with including the on-site interactions between electrons in the two orbitals. It is revealed that for the parent compound, magnetism is caused by the strong Hund's coupling, and the Fermi surface topology aids to select the spin-density-wave (SDW) pattern. The superconducting (SC) order parameter with $s_{\pm}=\Delta_{0}\cos(k_{x})\cos(k_{y})$ symmetry is found to be the most favorable pairing for both the electron- and hole-doped cases, while the local density-of-states (LDOS) exhibits the characteristic of nodal gap for the former and full gap for the latter. In the vortex state, the emergence of the field-induced SDW depends on the strength of the Hund's coupling and the Coulomb repulsions. The field-induced SDW gaps the finite energy contours on the electron and hole pocket sides, leading to the dual structures with one reflecting the SC pairing and the other being related to the SDW order. These features can be discernable in STM measurements for identifying the interplay between the field-induced SDW order and the SC order around the core region.
Pseudo-rapidity Distributions of Charged Hadrons in pp and pA Collisions at the LHC
Hong-Min Wang,Jia-Fu Liu,Zhao-Yu Hou,Xian-Jing Sun
Physics , 2013, DOI: 10.1088/1674-1137/37/8/084101
Abstract: In the framework of Color Glass Condensate, the pseudo-rapidity distributions of charged hadrons in pp and pA collisions at the LHC are studied with the UGD function from the GBW model. With a $\chi^{2}$ analysis of the CMS data in pp collisions at $\sqrt{s}=0.9,~2.36,~7$ TeV, the normalization factor is obtained and the theoretical results are in good agreement with the perimental data. Then, considering the influence of nucleon hard partons distribution on the number of participants in pA collisions by a Glauber Monte Carlo method, we give the predictive results for the multiplicity distributions in p+Pb collisions at $\sqrt{s}=4.4$ TeV.
2-Phenyl-1H-1,3,7,8-tetraazacyclopenta[l]phenanthrene
Hong-Min Xi
Acta Crystallographica Section E , 2008, DOI: 10.1107/s1600536808029759
Abstract: There are two molecules in the asymmetric unit of the title compound, C19H12N4. One is almost planar [dihedral angle between the fused-ring system and the phenyl ring = 2.16 (13)°] and one is somewhat twisted [dihedral angle = 13.30 (14)°]. In the crystal, the molecules are linked by N—H...N hydrogen bonds to result in chains.
Regional Difference in Distribution of China's Colleges and Universities and Its Impact on the Equality in Access to Higher Education
Hong-min SHEN
Canadian Social Science , 2007,
Abstract: The inequality in higher education recruitment chances among various regions in China has been a much talked about subject and has triggered a number of discussions in recent years. Yet the systematic empirical study on this topic has not been carried out. This paper is an empirical effort to study the nature and reasons of inequality in access to higher education in China. The key questions asked in this study are, What is the impact of the imbalance in the regional distribution of higher education institutions on equal educational opportunities for students? And How has the regional distribution of higher education institutions formed and evolved in China? This paper traces back the historical process for the formation of regional distribution pattern of China’s higher education institutions, and through statistical analysis, discusses the influence of the imbalance in regional distribution of higher education institutions on students’ chances for higher education. The authors’ main findings are that, (1) The imbalanced regional distribution pattern of China's higher education institutions was mainly formed during the readjustment of departments and colleges in 1950s. Later, although the overall number of colleges and universities during the periods of Great Leap Forward (1958-1960) and the Cultural Revolution (1966-1976) fluctuated, the basic distribution pattern had not changed too much until 1990s. (2) There are two main reasons for the inequality in the chances for the students to be recruited by colleges and universities among different regions in China. One is the imbalance in regional distribution of colleges and universities, the other is the enrolment system with the planned number of students to be enrolled being based on provinces. The latter, in an institutionalized way, transforms the imbalance in regional distribution of colleges and universities into the difference in recruitment mark lines in different regions, and thus leads to the inequality in chances for being recruited by colleges and universities. Key words: China's higher education, Inequality in access to higher education, imbalanced regional distribution. Résumé: L’inégalité de chances dans le recrutement de l’éducation supérieure parmi les différentes régions en Chine a été un sujet beaucoup parlé et a provoqué de nombreuses discussions dans les dernières années. Mais une étude empirique et systématique sur ce problème n’a pas encore été entreprise. Cet article est un effort empirique pour étudier la nature et les raisons de l’inégalité de l’accès à l’éducation supérieure en C
Effect of Partial Ground Plane Removal on the Radiation Characteristics of a Microstrip Antenna  [PDF]
Hong-Min Lee, Wong-Sang Choi
Wireless Engineering and Technology (WET) , 2013, DOI: 10.4236/wet.2013.41002
Abstract:

This study presents a new, simple method for reducing the back-lobe radiation of a microstrip antenna (MSA) by a partially removed ground plane of the antenna. The effect of the partial ground plane removal in different configurations on the radiation characteristics of a MSA are investigated numerically. The partial ground plane removal reduces the backlobe radiation of the MSA by suppressing the surface wave diffraction from the edges of the antenna ground plane. For further improving the front-to-back (F/B) ratio of the MSA, a new soft-surface configuration consisting of an array of stand-up split ring resonators (SRRs) are placed on a bare dielectric substrate near the two ground plane edges. Compared to the F/B ratio of a conventional MSA with a full ground plane of the same size, an improved F/B ratio of 9.7 dB has been achieved experimentally for our proposed MSA.

 

Preparation of Ultrafine Hematite Particles by Microwave Heating of Ferric Salt Solutions
纳米相铁红粒子的液相制备

JIA Zhen-Bin,WEI Yu,WANG Hong-min,
贾振斌
,魏雨,王洪敏

无机材料学报 , 2000,
Abstract: 由0.2mol.L^-1Fe^3+采用微小诱导加热制备了纳米尺寸的准立方形和纺锤形α-Fe2O3粒子,与常规加热主试比较微波加热制得的α-Fe2O3粒子粒径小且分布均匀,实验证明无机离子加H^+,OH^-和Na^+等的加入可明显加速反应速率。
一类非局部近共振问题多重解的存在性
Existence of Multiple Solutions for a Class of Nonlocal Near Resonance Problems

王跃,梁金平,索洪敏
WANG Yue
,LIANG Jin-ping,SUO Hong-min

- , 2018, DOI: 10.13718/j.cnki.xdzk.2018.04.009
Abstract: $通过变分方法在光滑有界域Ω上研究由常数ab>0,参数λ>0及连续函数f(xu)共同决定的非局部问题:$ \left\{ {\begin{array}{*{20}{c}} \begin{array}{l} - \left( {a - b\int_\mathit{\Omega } {{{\left| {\nabla u} \right|}^2}{\rm{d}}x} } \right)\Delta u + b\lambda {u^3} = f\left( {x,u} \right)\\ u = 0 \end{array}&\begin{array}{l} x \in \mathit{\Omega }\\ x \in \partial \mathit{\Omega } \end{array} \end{array}} \right. $ 利用Ekeland变分原理和山路引理得到该问题近共振情形多重解的存在性.$
$In this paper, we use the variational method to study the following nonlocal problems in the smooth bounded domain Ω, which are determined by the constant a, b > 0, the parameter λ > 0 and the continuous function f(x, u): $ \left\{ {\begin{array}{*{20}{c}} \begin{array}{l} - \left( {a - b\int_\mathit{\Omega } {{{\left| {\nabla u} \right|}^2}{\rm{d}}x} } \right)\Delta u + b\lambda {u^3} = f\left( {x,u} \right)\\ u = 0 \end{array}&\begin{array}{l} x \in \mathit{\Omega }\\ x \in \partial \mathit{\Omega } \end{array} \end{array}} \right. $ The existence and multiple solutions are obtained for this class of problems with near resonance by the Ekeland variational principle and a mountain pass lemma.
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