OALib Journal期刊

ISSN: 2333-9721




2018 ( 2 )

2017 ( 32 )

2016 ( 52 )

2015 ( 752 )


匹配条件: “SHENG Hao” ,找到相关结果约28651条。
K-quantum Nonlinear Jaynes-Cummings Model in Two Trapped Ions
Hao-Sheng Zeng
Physics , 2001, DOI: 10.1088/1009-1963/11/5/314
Abstract: A k-quantum nonlinear Jaynes-Cummings model for two trapped ions interacting with laser beams resonant to k-th red side-band of center-of-mass mode, far from Lamb-Dicke regime, has been obtained. The exact analytic solution showed the existence of quantum collapses and revivals of the occupation of two atoms.
Unparticle Physics and Supersymmetry Phenomenology
Zhang, Hao;Li, Chong Sheng;Li, Zhao
High Energy Physics - Phenomenology , 2007, DOI: 10.1103/PhysRevD.76.116003
Abstract: We show a natural form of the interaction between unparticle and supersymmetry. Using the couplings of unparticle to supersymmetry presented, as examples, we calculate the differential decay rates for the processes ${\it {\tilde f}}\to {\it f}+{\cal U}_{3/2}$, ${\it {\tilde \chi}}^0\to{\it \gamma}+{\cal U}_{3/2}$, ${\it {\tilde \chi}}^\pm\to W^\pm+{\cal U}_{3/2}$ and ${\it {\tilde \chi}}^0\to Z^0+{\cal U}_{3/2}$. Finally, we discuss the phenomenological implication of our results and give some comments.
Particle deposition characteristics in entrained flow coal gasifier
Liu Sheng,Hao Ying-Li
Thermal Science , 2012, DOI: 10.2298/tsci1205544l
Abstract: Cold state experiment and numerical simulation are carried out to study particle deposition process. The deposit mass can be divided into two parts, one directly collides with the wall and the other is brought by the backflow. The deposit flux increases with the increase of gas flow rate or water flow rate or both, and decreases with the increase of the central channel gas flow rate.
Use of the Thermal Chemical Vapor Deposition to Fabricate Light-Emitting Diodes Based on ZnO Nanowire/p-GaN Heterojunction
Sheng-Po Chang,Ting-Hao Chang
Journal of Nanomaterials , 2011, DOI: 10.1155/2011/903176
Abstract: The fabrication and characteristics of grown ZnO nanowire/p-GaN heterojunction light-emitting diodes are reported. Vertically aligned ZnO nanowire arrays were grown on a p-GaN substrate by thermal chemical vapor deposition in quartz tube. The rectifying current-voltage characteristics indicate that a p-n junction was formed with a heterostructure of n-ZnO nanowire/p-GaN. The room temperature electroluminescent emission peak at 425 nm was attributed to the band offset at the interface between the n-ZnO nanowire and p-GaN and to defect-related emission from GaN; it was also found that the there exist the yellow band in the hetrojunction. It would be attributed to the deep defect level in the heterojunction. 1. Introduction Recently, nanowire- (NW-) based light-emitting diodes (LEDs) have become the focus of many researches and have also drawn considerable attention owing to their many advantages over conventional thin-film-based devices. NWs can improve light extraction without the use of a reflector because they can act as direct waveguides, and their nanostructure can overcome lower carrier injection efficiency because of a large band offset at the heterojunction interface. The nanojunction can also increase the contact area and aspect ratio and, hence, enhance carrier injection efficiency and recombination. Zinc oxide (ZnO) has a wide bandgap ( = 3.37?eV) and a stronger excitation binding energy (60?meV) than gallium nitride (GaN) (~29?meV) [1]. In addition, ZnO is a natural n-type semiconductor and has a wurtzite structure [2, 3]. These properties make ZnO a potential material to be used for ultraviolet (UV) photodetectors and other optoelectronic applications [4]. Moreover, ZnO-based one-dimensional (1D) materials are widely used because of their high surface-area-to-volume ratio. Therefore, a large contact area of the p-n junction structure could be fabricated to produce many kinds of optoelectronic devices such as LEDs and detectors. However, ZnO homojunction devices are difficult to fabricate because p-type doping in ZnO is not stable or reliable enough. Therefore, a heterojunction of ZnO and another material is needed to realize a p-n junction, which is an important part of many devices. Heterojunction devices fabricated in previous studies utilized semiconductors such as Cu2O, Si, SiC, and GaN [5–8]. Although several studies have investigated the use of p-type ZnO to realize homojunction devices, the fabrication of such devices is difficult because p-type ZnO is not stable or reliable enough. GaN is a wide-bandgap semiconductor ( = 3.39?eV) and
Identification of Antifreeze Proteins and Their Functional Residues by Support Vector Machine and Genetic Algorithms based on n-Peptide Compositions
Chin-Sheng Yu, Chih-Hao Lu
PLOS ONE , 2011, DOI: 10.1371/journal.pone.0020445
Abstract: For the first time, multiple sets of n-peptide compositions from antifreeze protein (AFP) sequences of various cold-adapted fish and insects were analyzed using support vector machine and genetic algorithms. The identification of AFPs is difficult because they exist as evolutionarily divergent types, and because their sequences and structures are present in limited numbers in currently available databases. Our results reveal that it is feasible to identify the shared sequential features among the various structural types of AFPs. Moreover, we were able to identify residues involved in ice binding without requiring knowledge of the three-dimensional structures of these AFPs. This approach should be useful for genomic and proteomic studies involving cold-adapted organisms.
Human parthenogenetic embryonic stem cells: one potential resource for cell therapy
Jie Hao,WanWan Zhu,Chao Sheng,Yang Yu,Qi Zhou
Science China Life Sciences , 2009, DOI: 10.1007/s11427-009-0096-2
Abstract: Pluripotent stem cells derived from somatic cells through such processes as nuclear transfer or induced pluripotent stem (iPS) cells present an important model for biomedical research and provide potential resources for cell replacement therapies. However, the overall efficiency of the conversional nuclear transfer is very low and the safety issue remains a major concern for iPS cells. Embryonic stem cells (ESCs) generated from parthenogenetic embryos are one attractive alternative as a source of histocompatible cells and tissues for cell therapy. Recent studies on human parthenogenetic embryonic stem cells (hPG ESCs) have revealed that these ESCs are very similar to the hESCs derived from IVF or in vivo produced blastocysts in gene expression and other characteristics, but full differentiation and development potential of these hPG ESCs have to be further investigated before clinical research and therapeutic interventions. To generate various pluripotent stem cells, diverse reprogramming techniques and approaches will be developed and integrated. This may help elucidate the fundamental mechanisms underlying reprogramming and stem cell biology, and ultimately benefit cell therapy and regenerative medicine.


物理学报 , 1957,
Abstract: In this paper, an approximate expression for solving plane stress problem of orthotropic material is worked out based upon the procedures of Lecknitzky's work. For the purpose of applications, three simple examples are given, namely: (1) The bending of beam with circular hole, ( 2 ) circular hole in a plate under simple tension, ( 3 ) elliptic hole in an infinite plane with uniformly distributed pressure acting on the edge of hole.
Social Constructionism and the Future of Theoretical Research in Psychology

YE Hao-Sheng,

心理学报 , 2009,
Abstract: 社会建构论是当代西方心理学中的一股重要学术思潮。它认为知识不是一种科学发现,而是一种社会建构。知识的生产过程不是个体理性决定的,而是一种文化历史的过程,是社会协商和互动的结果。有关心理现象的分类、心理活动的形式方面的知识都是一定文化历史条件的产物。从社会建构论的视角看心理学的研究成果会有许多新的收获。从社会建构论的观点来看,理论不是经验事实的概括和抽象,而是一种社会建构。理论先于经验观察,也高于经验观察,这种观点将理论建构置于经验工作之首,为心理学理论的未来发展开辟了全新的视角。
Embodied Cognition: A New Approach in Cognitive Psychology

YE Hao-Sheng,

心理科学进展 , 2010,
Abstract: The embodied cognition approach in cognitive psychology is featured as the emphasis it places on the role the body plays in an organism's cognitive processes.Its central meanings include the following claims:(1) steps in a cognitive process might emerge from the physical attributes of the body;(2) it tries to account for the content of cognition by appeal to the nature of the body;(3) cognitive processes or states might be extended into the environment in which the cognition takes place.At first,the study o...
Historiography of Psychology: Challenges of Postmodernism

YE Hao-Sheng,

心理学报 , 2008,
Abstract: 后现代主义思潮深刻影响了心理学史的研究与写作.传统的心理学历史编纂学接受真理的符合论,认为心理学的发展史是一维的和历时的.它习惯于在心理学的发展史中寻找某些"中心"或"标志",并假定了不同的国家和民族、不同历史时期的心理学所面对的是同一主题.但是后现代主义的心理学历史编纂学强调了历史的社会建构特性,认为心理学史叙述的并非一种"客观实在",而是史学家的一种话语建构.后现代主义的心理学历史编纂学使得心理学史家更明确的意识到历史知识的主观性,有助于心理学史家认识历史研究中的价值和意识形态问题,正视文化视角造成的认识差异,因而是有着积极意义的.

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