检索结果-南通市图书馆

Chinese Chemical Letters 1996年第3期7卷 241-244页

作者： Pan, XP Yu, DQ lee, kh BEIJING UNION MED COLL BEIJING 100050PEOPLES R CHINA UNIV N CAROLINA SCH PHARMNAT PROD LABDIV MED CHEM & NAT PRODCHAPEL HILLNC 27599 CHINESE ACAD MED SCI INST MAT MEDBEIJING 100050PEOPLES R CHINA

Two new polyoxygenated cyclohexenes,named uvarigranol E (I) andF(VII),were isolated from the rhizome of Uvaria grandiflora. On the basis ofspectral analysis and chemical derivatizations, including preparation of Mosheresters,the structures of I and VII were established as IR-acetoxymethyl-l,2Sdihydroxy-3 R,6S-dibenzoyloxy-cyclohex-4-ene and IR-hydroxymethyl-l,2Sdihydroxy-3R,6S-dibenzoyloxy cyclohex-4-ene.

关键词：

Micro-Gravity-Induced Systemic Deterioration of Musculoskeletal System and Development of Preventive Strategy-A Rat Tail Suspension Model

在线全文

学校读者我要写书评

暂无评论

Micro-Gravity-Induced Systemic Deterioration of Musculoskele...

中国空间科学学会第七次学术年会

作者： Leung KS Tam KF Ng Eric lee kh Cheung HW Department of Orthopaedics and Traumatology The Chinese University of Hong Kong

＜正＞BACKGROUND and PURPOSE:Prolonged exposure to microgravity may cause systemic problems to all body systems,including the relevant musculoskeletal *** studies concentrated on either bone loss or muscle *** current... 详细信息

关键词： Rats Tail suspention Bone Skeletal muslce Bone-tendon junction

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

神经管过表达BRE基因促进体节形成和分化

基础医学与临床 2011年第12期31卷 1309-1313页

作者：雷健王广李艳常青 Kenneth kh lee John YH Chan 杨雪松暨南大学医学院组织与胚胎学教研室再生医学教育部重点实验室广东广州510632 香港中文大学解剖系

目的探讨BRE基因对鸡胚胎早期体节发育的作用。方法显微注射法将含有BRE基因的质粒注射入HH10期鸡胚神经管,活体胚胎细胞电穿孔方法转染半侧神经管,以另一侧为正常对照侧,原位杂交及免疫荧光法观察过表达BRE基因后体节的发育。结果 BRE... 详细信息

目的探讨BRE基因对鸡胚胎早期体节发育的作用。方法显微注射法将含有BRE基因的质粒注射入HH10期鸡胚神经管,活体胚胎细胞电穿孔方法转染半侧神经管,以另一侧为正常对照侧,原位杂交及免疫荧光法观察过表达BRE基因后体节的发育。结果 BRE基因在鸡胚表达始于神经板,而后高表达在脑泡、神经管及体节。过表达BRE基因后,神经管形态及PAX7和FGF8表达与对照侧相比无明显异常,而实验侧体节PAX7标记发现生皮肌节较大,FGF8表达与对照侧相比无明显异常。结论过表达BRE基因对体节的形成和分化有促进作用,其机制可能与PAX7相关。

关键词：神经管体节 BRE PAX7 FGF8

在线全文

学校读者我要写书评

暂无评论

采用低频电磁场进行电导率层析成像

物探化探译丛 1993年第A7期 15-19页

作者： lee,kh 胡平

Synthesis and characterization of nanocarbon from waste batteries via an eco-friendly method

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Waste Disposal and Sustainable Energy 2024年第2期6卷 197-208页

作者： Maraim kh.Uoda Hussein Q.Hussein Rana R.Jalil Chemical Engineering Department College of EngineeringUniversity of BaghdadBaghdadIraq Thi.Qar Oil Company NassriyaIraq Petroleum Research and Development Center BaghdadIraq

The widespread use of disposable batteries to power common electronic devices is a major source of *** are growing environmental and health concerns due to the expansion of e-waste around the ***,developing a reli-able system for recycling old batteries has reached the top of the recycling priority *** current study presents a novel approach to synthesis carbon nanoparticles(CNPs)from spent batteries via an eco-friendly method that offers economical,environment-friendly,and nontoxic approaches in comparison to conventional chemical *** synthesized nano-particles were characterized by field emission scanning electron microscopy(FE-SEM),energy-dispersive X-ray(EDX),powder X-ray diffractometry(XRD),UV-VIS absorption analysis(UV),Fourier transform infrared spectroscopy(FT-IR),Atomic force microscope(AFM),and thermo-gravimetric analysis(TGA).The average diameter of the synthesized particles was 40.16 nm,and the particles tended to be aspherical in *** analysis also predicted the presence of pure carbon,with some contamination arrived at 15%(in weight).This is a novel study in which nanocarbons were synthesized in a brine(7600x10-6)from a target(CNPs>75 nm),which paves the way for future use of CNPs derived from spent batteries and helps the environment by decreasing the amount of electronic waste dumped in landfills.

关键词： Novel Zn-C battery Carbon nanoparticles Characterization Eco-friendly methods

芸苔属作物非整倍体连续自交产生的新型二倍体的细胞遗传学和形…

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

国外农学（油料作物） 1996年第1期 12-15页

作者： lee,kh 晏春庚

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

慢性阻塞性肺疾病病人与ICU

中华结核和呼吸杂志 1997年第Z1期20卷 101-101页

作者： lee kh Lim TK Tan WC 臧松(译) DivisionofRespiratoryMedicine NationalUniversityHospitalSingapore

碘-131-Cun-1肺癌单克隆抗体在裸鼠肺癌移植模型动力学的实验研究

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

冶金医药情报 1989年第1期6卷 1-5页

作者：陈克云 Epstein AL Chen FM lee kh Chen DCP Huny GL Ballard S Payne D Siegel ME Halls J 浙江医科大学附属第一医院核医学教研室 University of Southern California

肺癌单克隆抗体的实验研究近年米有较快地进展，我国在这个领域亦有迅速的发展。兹将在南加利福尼亚大学期简对Cun-1 MoAb工作小结于下。

关键词：肺癌单克隆抗体实验研究裸鼠移植模型鼠肺小结发展中国

Influence of loading ratio on flat slab connections at elevated temperature:A numerical study

在线全文

学校读者我要写书评

暂无评论

Frontiers of Structural and Civil Engineering 2020年第3期14卷 664-674页

作者： Rwayda kh.S.AL-HAMD Martin GILLIE Safaa Adnan MOHAMAD lee S.CUNNINGHAM Mechanical Aerospace and Civil Engineering DepartmentSchool of EngineeringThe University of ManchesterManchester M139PLUK Prosthetics and Orthotics Engineering Deparment College of EngineeringAl-Nahrain UniversityBaghdad 10011Iraq Deparment of Mechanical and Consrruction Engineering Northumbria UniversityNewcastleNE18STUK Department of Highway and Transporation Engineering Al-Mustansiriyah UniversityBaghdad 10011lraq

For reinforced concrete members subjected to high temperature,the degree of in-service loading,commonly expressed as the loading ratio,can be highly influential on the structural *** particular,the loading ratio may be pivotal in relation to the phenomenon of load-induced thermal *** its potentially pivotal role,to date,the influence of the loading ratio on both material and structural behavior has not been explored in *** practice,real structures experience variation in imposed loading during their service life and it is important to understand the likely response at elevated temperatures across the loading *** this paper,the effect of the loading ratio is numerically investigated at both material and structural level using a validated finite element *** model incorporates a proposed constitutive model accounting for load-induced thermal strain and this is shown to outperform the existing Eurocode 2 model in terms of *** the validated model,the specific case of flats slabs and the associated connections to supporting columns at various loading ratios are *** the cases examined,a marked difference in the structural behavior including displacement direction was captured from low to high loading ratios consistent with experimental observations.

关键词： concrete finite clements fire load-induced thermal strain punching shear

The effect of a magnetic field on a 2D problem of fibre-reinforced thermoelasticity rotation under three theories

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 B 2012年第6期21卷 264-275页

作者： kh.Lotfy Department of Mathematics Faculty of ScienceZagazig UniversityZagazigP.O.Box 44519Egypt Department of Mathematics Faculty of Science and ArtsAl-mithnabQassim UniversityP.O.Box 931Buridah 51931Al-mithnabKingdom of Saudi Arabia

In the present paper, we introduce the coupled theory （CD）, Lord-Schulman （LS） theory, and Green-Lindsay （GL） theory to study the influences of a magnetic field and rotation on a two-dimensional problem of fibre-reinforced thermoelasticity. The material is a homogeneous isotropic elastic half-space. The method applied here is to use normal mode analysis to solve a thermal shock problem. Some particular cases are also discussed in the context of the problem. Deformation of a body depends on the nature of the force applied as well as the type of boundary conditions. Numerical results for the temperature, displacement, and thermal stress components are given and illustrated graphically in the absence and the presence of the magnetic field and rotation.

关键词： Lord-Schulman theory Green-Lindsay theory coupled theory reinforcement rotation,magnetic field