检索结果-南通市图书馆

Band Offset and Optical Property of (ZnS)_(n)/(Si2)_(n) (110) Superlattice

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 1996年第6期13卷 458-460页

作者： LI Kai-hang huang mei-chun WANG Ren-zhi Department of Physics Xiamen UniversityXiamen 361005

Supercell self-consistent calculation of band structures of(ZnS)_(n)/(Si_(2))_(n) (110) (n=2,3,4,5)has been performed by means of linear muffin-tin orbitals *** valence-band offset of such systems is calculated by frozen optential method and their Joint density of states has been computed by tetrahedron *** results show that the(ZnS)n/(Si_(2))n(110)superlattices have a large valence-band offset and their optical properties integrate exellent optical properties of bulk ZnS and that of Si.

关键词： method Si_(2)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

医护人员的猴痘认知水平现状及影响因素

中国感染控制杂志 2024年第7期23卷 852-859页

作者：黄春梅王宁李雪莲陈兰陈梦灵顾陈婕上海市第一人民医院护理部上海201600

目的分析医护人员对猴痘的知识水平、意愿及态度的影响因素。方法采用横断面调查的方法,于2023年1—4月随机抽取上海市某三甲医院医护人员700名,应用自行编制的猴痘调查问卷,通过问卷星进行匿名调查。结果共回收问卷612份,有效问卷581份... 详细信息

目的分析医护人员对猴痘的知识水平、意愿及态度的影响因素。方法采用横断面调查的方法,于2023年1—4月随机抽取上海市某三甲医院医护人员700名,应用自行编制的猴痘调查问卷,通过问卷星进行匿名调查。结果共回收问卷612份,有效问卷581份,回收率87.43%,有效率94.93%。问卷平均得分为(128.80±27.70)分,得分率为58.54%。多元线性回归分析表明,不同年龄、职业、科室、文化程度、工作年限、职称、了解猴痘知识主动性和参加单位组织的猴痘相关的讲座情况医护人员的猴痘知识水平比较,差异均有统计学意义(均P<0.05)。结论医护人员对猴痘认知处于中等水平。应加强医护人员对猴痘知识的培训,提高猴痘疫情暴发时的应急能力。

关键词：医护人员猴痘知识态度影响因素

Electronic Properties of Solid Composed of Al_(12)Ge Clusters

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 1998年第2期15卷 103-105页

作者： ZHU Zi-zhong TIAN Bo huang mei-chun Department of Physics Xiamen UniversityXiamen 361005

The ab initio pseudopotential local-density studies on the electronic structure and geometry of a theoretical solid are presented with Al_(12)Ge cluster serving as the building block of the *** results show that bulk material formed from cubic close-packing of All2Ge clusters will eventually be an aluminum-like metal when lattice parameter of the solid and atomic geometry of the clusters are optimized by the crystal field.

关键词： material. field. geometry

First-Principles Electronic Structure of Cu^(+) Luminescence Centers in Cu-Doped ZnS

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 1998年第8期15卷 591-593页

作者： ZHANG Zhi-peng SHEN Yao-wen huang mei-chun Department of Physics Xiamen UniversityXiamen 361005

The electronic structures of various Cu^(+) luminescence centers in wurtzite ZnS are studied by using first-principles linear muffin-tin-orbital method combining atomic sphere *** results for ZnS:Cu:Cl and ZnS:Cu:Al show that Cu acceptor states are anomalously deep(beyond 2.7eV above the top of valence band)and located near the bottom of conduction band in these two *** the other hand,the results for ZnS:Cu with sulfur vacancies manifest that the Cu+center is an associated center,whose Cu d-like states are situated above the top of valence band.

关键词： band. ZnS:Cu conduction

Structural and Electronic Properties of RuSi, RuGe and OsSi

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2001年第10期18卷 1389-1391页

作者： HE Guo-min LI Shu-Ping huang mei-chun Department of Physics Xiamen UniversityXiamen 361005

Structural and electronic properties of RuSi, RuGe and OsSi are investigated by first-principle density-functional calculations based on ultrasoft pseudopotential and generalized gradient approximations for the exchange-correlation functional The bulk moduli for RuGe and OsSi which have not been available from experiments are predicted to be 2.08 and 2.65 Mbar. Though all these compounds with a B20 structure are semiconductors according to the calculation, their band gaps are overestimated compared to those from experiments by a factor of about two.

关键词： gradient structure electronic

住院床位统筹管理对医院床位运营效率的成效分析

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

现代医院管理 2024年第5期22卷 34-37页

作者：陈欣静黄春梅钟新华中山大学附属第三医院广州市510630

目的探讨某三甲医院住院床位统筹管理模式的方法及成效。方法建设和完善医院信息系统,设立专人专岗,通过一站式医疗服务中心对全院住院床位进行统筹管理,包括预住院统一检查检验及预约、跨病区床位调配、日间医疗管理等综合管理。结果... 详细信息

目的探讨某三甲医院住院床位统筹管理模式的方法及成效。方法建设和完善医院信息系统,设立专人专岗,通过一站式医疗服务中心对全院住院床位进行统筹管理,包括预住院统一检查检验及预约、跨病区床位调配、日间医疗管理等综合管理。结果通过前后对比,床位效能分析优势象限的医疗单元增多(P<0.001)。结论住院床位统筹管理能够使各医疗单元床位使用效能明显提高,盘活全院床位,提高床位使用率,解决患者住院难的问题,改善患者就医体验。

关键词：床位统筹管理床位使用率预住院

Electronic Structure of Equilibrium-State TiN_(x) Films

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 1997年第7期14卷 542-545页

作者： ZHANG Zhi-peng SHEN Yao-wen XU Wei huang mei-chun Department of Physics Xiamen UniversityXiamen 361005

By using LMTO-ASA method and supercell approach,the self-consistent band structures forα-Ti,ε-Ti_(2)N,andδ-TiN have been ***,α-Ti,ε-Ti_(2)N,andδ-TiN were taken as three samples corresponding to TiNx films for x=0,0.5,***,according to the phase diagram of Ti-N and statistical supercell method,we have,for the first time to our knowledge,calculated the electronic structures of equilibrium-state TiN_(x) films for all compositions of x<1.0.

关键词： (x) method equilibrium

Change of Work Function of Pd, Ag, K on Al(001) as a Function of External Electric Field

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2001年第8期18卷 1111-1113页

作者： ZHU Zi-Zhong HOU Zhu-Feng huang mei-chun huang Rong-Bin ZHENG Lan-Sun Department of Physics Xiamen UniversityXiamen 361005 State Key Laboratory for Physical Chemistry of Solid Surfaces Xiamen UniversityXiamen 361005

We present a local density functional calculation of the effect of an external electric field on the work function change of Pd and Ag adsorption on an Al(001)*** adsorption of K has also been considered for *** found that the work functions for all the systems increased linearly when the strength of external electric field was *** the polarized electrons at the interstitial regions between the adsorbate and substrate for Pd/Al(001)and Ag/Al(001)react to the external electric field differently,the subtle differences between Pd/Al(001)and Ag/Al(001)bondings has been characterized through the comparison of slopes of the work function change versus electric field.

关键词： surface. field. adsorption

Electronic and Optical Properties of (GaN)_(n)/(AlN)_(n) (001) Superlattices

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 1999年第6期16卷 437-439页

作者： LI Kai-hang huang mei-chun ZHU Zi-zhong ZHANG Zhi-peng Department of Physics Xiamen UniversityXiamen 361005

The band structure of the short period zinc-blende(GaN)_(n)/(AlN)_(n)(001)superlattices has been calculated by means of semi-empirical tight-bin ding sp^(3)s^(*) *** superlattices energy gap dependence on layer number n is given *** the basis of the calculated eigenfunctions and eigenvalues of the superlattices(SL),the imaginary Parts of the dielectric function ε2(ω) of(GaN)_(n)/(AlN)_(n)(001)superlattices were *** order to compare with the optical properties of bulk zinc-blende GaN and AlN,we also calculated ε2(ω) of the two *** is shown that there are some discernible effects due to confinement and superlattice periodicity.

关键词： imaginary dielectric