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Search Results: 1 - 10 of 75815 matches for " XU Jing-sheng "
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AN ELECTRON MASER INSTABILITY
电子迴旋激射不稳定性

XU MlN-JIAN,WU JING-SHENG,
徐民健
,吴京生

物理学报 , 1985,
Abstract: The electron cyclotron maser instability is analyzed for the following case, in which a relativistic monoenergetic electron beam is injected into a background plasma, but the beam direction is initially oblique to the ambient magnetic field. We consider that the electron plasma frequency is comparable to the electron cyclotron frequency associated with the external magnetic field and study the situation: (1) the background plasma density n0 is much larger than that of the suprathermal electron ns and (2) n0
PHOTOELECTRON SPECTROSCOPIC STUDY OF THE EFFECT OF Cs INTRALAYER ON THE BAND LINEUP OF Ge/InP(100) HETEROJUNCTION

XU SHI-HONG,XU PENG-SHOU,ZHU JING-SHENG,LIU XIAN-MING,ZHANG YU-HENG,XU ZHEN-JIA,

中国物理 B , 1994,
Abstract:
DEPOSITION OF CNx THIN FILMS BY ELECTROLYSIS OF ORGANIC SOLUTION
电解有机溶液法制备CNx薄膜

XU QI-AN,SHEN MING-RONG,NING ZHAO-YUAN,ZHU JING-SHENG,
许杞安
,沈明荣,宁兆元,朱警生

物理学报 , 1999,
Abstract: 在60℃和常压下,电解甲醇和脲的混合溶液在硅基片上沉积CNx薄膜.傅里叶红外和Raman测试表明,所得薄膜是非晶态的,碳和氮主要是以C—N,C—C,C=C和C=N的形式成键,有少量的碳和氮以C≡N的形式成键.X射线光电子能谱测试表明,氮是以SP2和SP3杂化形式与碳化学成键来成膜的.测试结果表明通过液相沉积法所得CNx薄膜与汽相沉积法所得CNx薄膜的结构比较接近.
THE POLYCONDENSATION OF TEREPHTHALOYL CHLORIDE AND p-PHENYLENEDIAMINE HYDROCHLORIDE IN NMP-CaCl2 SOLVENT SYSTEM
对苯二胺盐酸盐与对苯二甲酰氯在NMP-CaCl2溶剂体系中的缩聚反应

BAO Jing-sheng,XU Chao-chou,ZHANG Qiu-hua,
宝净生
,徐朝俦,张秋华

高分子学报 , 1985,
Abstract: 聚对苯二甲酰对苯二胺(PPTA)具有刚性链分子结构,能形成各向异性的高分子液晶溶液,纺丝后可得到性能优异的高模量、高强度的纤维。但是,欲制出高模高强的PPTA纤维,必须先制出高分子量的PPTA聚合体。等曾研究了对苯二胺盐酸盐与对苯二甲酰氯在二甲基乙酰胺-氯化锂(DMAC-LiCl)溶剂体系中合成PPTA的问题。
Pituitary-Thyroid Dysfunction in a Hashimoto’s Encephalopathy Patient  [PDF]
Jing-Sheng Hu, Jian-Jun He, Mei-Kui Zhang
Neuroscience & Medicine (NM) , 2012, DOI: 10.4236/nm.2012.34042
Abstract:

The pathogenesis of Hashimoto’s encephalopathy has not been clearly elucidated and involvement of autoimmune damage has been proposed. We report a 23-year-old man who was emergently hospitalized for paroxysmal syncope and involuntary tremor with normal physical examination except for low heart rate. The patient was characterized by neurological symptoms, mild hypothyroidism, enlarged pituitary gland and extremely elevated thyrotropin, which all were reversed with levothyroxine alone. The case indicated that the pituitary-thyroid dysfunction may play a role in the pathogenesis of Hashimoto’s encephalopathy, hence, evaluation of pituitary gland should be recommended in diagnosis and treatment of Hashimoto’s encephalopathy.

SU(5) Symmetry of spdfg Interacting Boson Model
Jing-sheng Li,Yu-xin Liu,Peng Gao
Physics , 2003, DOI: 10.1360/03yg9028
Abstract: The extended interacting boson model with s-, p-, d-, f- and g-bosons being included (spdfg IBM) are investigated. The algebraic structure including the generators, the Casimir operators of the groups at the SU(5) dynamical symmetry and the branching rules of the irreducible representation reductions along the group chain are obtained. The typical energy spectrum of the Symmetry is given.
Exploiting Big Data in Logistics Risk Assessment via Bayesian Nonparametrics
Yan Shang,David B. Dunson,Jing-Sheng Song
Statistics , 2015,
Abstract: In cargo logistics, a key performance measure is transport risk, defined as the deviation of the actual arrival time from the planned arrival time. Neither earliness nor tardiness is desirable for customer and freight forwarders. In this paper, we investigate ways to assess and forecast transport risks using a half-year of air cargo data, provided by a leading forwarder on 1336 routes served by 20 airlines. Interestingly, our preliminary data analysis shows a strong multimodal feature in the transport risks, driven by unobserved events, such as cargo missing flights. To accommodate this feature, we introduce a Bayesian nonparametric model -- the probit stick-breaking process (PSBP) mixture model -- for flexible estimation of the conditional (i.e., state-dependent) density function of transport risk. We demonstrate that using simpler methods, such as OLS linear regression, can lead to misleading inferences. Our model provides a tool for the forwarder to offer customized price and service quotes. It can also generate baseline airline performance to enable fair supplier evaluation. Furthermore, the method allows us to separate recurrent risks from disruption risks. This is important, because hedging strategies for these two kinds of risks are often drastically different.
STUDIES OF INTERFACE FORMATION OF Co/GaAs(100) AND THE MAGNETIC PROPERTY OF ULTRATHIN Co FILMS
Co/GaAs(100)界面形成以及Co超薄膜磁性质的研究

ZHANG FA-PEI,XU PENG-SHOU,XU FA-QIANG,LU ER-DONG,SUN YU-MING,ZHANG XIN-YI,ZHU JING-SHENG,LIANG REN-YOU,
张发培
,徐彭寿,徐发强,陆尔东,孙玉明,张新夷,朱警生,梁任又

物理学报 , 1998,
Abstract: 利用同步辐射光电发射和铁磁共振(FMR)研究了Co/GaAs(100)界面形成以及Co超薄膜的磁性质.结果表明,在低覆盖度(约为0.2nm)下,Co吸附原子与衬底发生强烈的界面反应,在覆盖度为0.9nm时,形成稳定的界面.从衬底扩散出的Ga原子与Co覆盖层合金化,而部分As原子与Co原子发生反应,形成稳定的键合,这些反应产物都停留在界面处很窄的区域(0.3—0.4nm)内.另一部分As原子偏析在Co覆盖层表面.结合理论模型,详细地讨论了界面结构及Ga,As原子的深度分布.FMR结果表明,生长的Co超薄膜具
Cloning and Expression Analysis of Cytosolic Malate Dehydrogenase Gene from Sugarcane
甘蔗细胞质型苹果酸脱氢酶基因的克隆及其表达分析

XU Jing-sheng,QUE You-xiong,YAN Ke-wei,TANG Wei-qi,XU Li-ping,GAO San-ji,GUO Jin-long,DONG Meng,CHEN Ru-kai,
徐景升
,阙友雄,颜克伟,唐唯其,许莉萍,高三基,郭晋隆,董萌,陈如凯

热带亚热带植物学报 , 2012,
Abstract: A full-length cDNA sequence of sugarcane (Saccharum officinarum L.) cytosolic malate dehydrogenase (cMDH) gene, named as Sc-cMDH, was obtained from sugarcane full-length cDNA library by EST sequencing and bioinformatics analysis. The full-length of Sc-cMDH was 1314 bp with 999 bp open reading frame, encoding 332 amino acids. Sc-cMDH shared 86.5%~97.0% of amino acids with cMDH from other 9 species. Sc-cMDH contains typical NAD+ binding motif (T11GAAGQI17) and catalytic motif (I184WGNH188). Real-time PCR analysis showed that the expression of Sc-cMDH was higher in leaves and roots than that in stems of sugarcane.
THE LONGITUDINAL RESISTIVITY OF A MAGNETIZED PLASMA
磁化等离子体的纵向电阻率

CAI SHI-DONG,WU JING-SHENG,
蔡诗东
,吴京生

物理学报 , 1980,
Abstract: 从动力论方程出发,推导并讨论了磁化与非磁化等离子体的纵向电阻率。结果是:(1)各向同性磁化等离子体的电阻率约为非磁化者的1.5倍;(2)对各向异性的等离子体而言,磁化后的电阻率约与Te⊥Te‖-5/2成正比,但非磁化时的电阻率则与Te⊥-1Te‖-1/2成正比。以上的差异主要是来自外磁场对电子运动轨迹的作用。同时本文亦论述了在讨论经典电阻率时,静态屏蔽作用是主要的,而动力屏蔽对电阻率的影响是可以忽略不计的。
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