检索结果-南通市图书馆

Bis(4-chloro-2-cyclohexylimino methyl-phenolate)-two Thiocyanation Cadmium

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2006年第9期25卷 1067-1070页

作者： zhang Xin-li li Zong-Xiao Department Of Chemistry Baoji University of Arts and Science Baoji 721007 China

The title compound （C28H32CdCl2N4O2S2, Mr = 704.00） has been synthesized and characterized by elemental analysis and single-crystal X-ray diffraction. The Schiff base compound is a derivative of 5-chlorosalicylaldehyde. As expected, the molecular structure adopts a trans configuration about the central C=N double bond. It crystallizes in the monoclinic system, space group P21/n with a = 6.003（5）, b = 16.490（15）, c = 15.698 （14） A,β = 94.523（12）°, V= 1549（2） A^3, Z = 2, Dc = 1.509 g/cm^3, F（000） = 716 and μ = 1.044 mm^-1. A total of 7724 reflections were collected in the range of 2.47-25.01° by using an phi and omega scantechnique, of which 2695 were unique （Rint = 0.0341） and 2258 observed reflections with 1 〉 2σ（I） were used in the structure solution and refinement. The complex assumes a distorted octahedral coordination geometry formed by four thiocyanate anions and two Schiff base ligands. The thiocyanate anion bridges the neighboring Cd（Ⅱ） atoms to form the polymeric chains.

关键词： 5-chlorosalicylaldehyde derivative crystal structure Schiff base

Validation And Reliability of Distress Thermometer in Chinese Cancer Patients

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Cancer Research 2011年第1期23卷 54-58页

作者： li-li Tang Ye-ning zhang Ying Pang Hai-wei zhang li-li Song Key laboratory of Corcinogenesis and Translational Research (Ministry of Education) Department of Psycho-OntologyPeking University School of Oncology Beijing Cancer Hospital ＆ Institute Beijing 100142 China

Objective：To examine the validation and reliability of the distress thermometer（DT） recommended by National Comprehensive Cancer Network（NCCN） in Chinese cancer ***：A total of 574 Chinese cancer patients from Beijing Cancer Hospital completed the detection of DT,the Hospital Anxiety and Depression Scale（HADS） and Symptom Checklist 90（SCL-90）,Receiver Operating Characteristic（ROC） curve and Area Under the Curve（AUC） were used to analyze the validation relative to HADS and *** patients with DT≥4 and whose distress caused by emotional problems were interviewed with the MiNi International Neuro-psychiatric Interview（MINI）（Chinese Version 5.0）.This version was used to analyze cancer patients＇ psychological and Psychiatric symptoms during the cancer process;*** 106 cancer patients in rehabilitation stage and stable condition were asked to fill in DT two times,at the base time and after 7-10 ***：Data of ROC indicates that a DT cutoff score of 4 yielded AUC of 0.80 with a optimal sensitivity（0.80） and specificity（0.70） relative to HADS,and AUC of 0.83 with the greatest sensitivity（0.87） and specificity（0.72） against *** DT also has acceptable test-retest reliability（r=0.800,P=0.000）;According to the interview results,the most common psychiatric problems cancer patients have adjustment disorder,depression,and ***：The data suggest that DT has acceptable overall accuracy and reliability as a screening tool for testing distress severity and specific problems causing distress in Chinese cancer *** is worth being used in oncology clinic,the rapid screening and interview could help caregivers to identify psychological and psychiatric problems of cancer patients and provide useful information for further treatment.

关键词： Validation Reliability Cancer patients Distress thermometer

Monoterpene and tetrahydronaphthene derivatives from Senecio argunensis

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2009年第5期20卷 598-600页

作者： Chao Feng zhang Ning li lin li Mian zhang Research Department of Pharmacognosy China Pharmaceutical University Nanjing 210038 China

Two new compounds, senarguines A and B, were isolated from Senecio argunensis. They were respectively identified as （Z）-3- ethylidene-9-hydroxyl-9-methyl-6,7-dioxaspiro [4.4] nonane-5,8-dione （1） and 3,6,6-trimeth... 详细信息

关键词： Compositae Senecio argunensis Senarguine A Senarguine B

The Effect of Method of Constructing the Mass Distribution on Single Stellar Populations

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Astronomy and Astrophysics 2005年第4期5卷 371-378页

作者： Feng-Hui zhang li-Fang li Zhan-Wen Han National Astronomical Observatories Yunnan Observatory Chinese Academy of SciencesKunming 650011

We use two methods of constructing the initial mass distribution, the traditional way and Monte Carlo simulation, to obtain integrated U - B, B - V,V-R and V-I colours and absorption-line indices defined by the lick Observatory image dissector scanner （referred to as lick/IDS）, for instantaneous burst solarmetallicity single stellar populations with ages in the range 1-15Gyr. We find that the evolutionary curves of all colours obtained by the traditional method are smoother than those by Monte Carlo simulation, that the U- B and B- V colours obtained by the two methods agree with one another, while the V - R and V - I colours by the traditional method are bluer than those by Monte Carlo simulation.A comparison of the lick/IDS absorption-line indices shows that the variations in all the indices by the traditional method are smoother than that for the Monte Carlo simulation, and that all the indices except for TiO1 and TiO2 are consistent with those for the Monte Carlo simulation.

关键词： star: evolution - galaxies: star clusters- galaxies: stellar content

MG63 Osteoblast-like Cells Growth Behaviour on Carbon/Carbon Composites with Different Carbon Matrixes

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Mechanical Engineering 2011年第2期24卷 303-308页

作者： zhang Leilei li Hejun li Kezhi ZHAO Xueni WU Heng CAO Sheng State Key Laboratory of Solidification Processing Northwestern Polytechnical University Xi ＇an 710072 China

During the process that implant materials are used for bone replacement,the cell responses to implant materials determine the long-term stability of bone *** microstructure of implant materials is considered as a critical factor that influences the cell ***/Carbon composites（C/C composites） are novel implant materials,but there are few reports on the effect of their microstructure,especially the carbon matrixes and holes,on cell *** this paper,C/C composites with different carbon matrixes are prepared by chemical vapor infiltration and pressure impregnation carbonization technique,*** structure of holes is *** cell responses to C/C composites with different carbon matrixes are evaluated with MG63 osteoblast-like *** morphologies of MG63 osteoblast-like cells on the surface of C/C composites,especially in the holes are assessed by scanning electron microscope,and cell proliferation behavior is evaluated by 3-[4,5-dimethylthiozol-2-yl]-2,5-diphenyltetrazolium bromide（MTT） assay. The results show that MG63 osteoblast-like cells have a lamellar morphology with similar sizes and spreading areas as well as the same proliferation behaviors for C/C composites with different carbon *** matrix shows unapparent influence on the cell growth ***,MG63 osteoblast-like cells have various interactions with the holes of C/C *** cells stride over the holes with 6～8μm in size,and connect with each other or grow along the curvature wall of the holes with a size of 30-40μm;the cells present three-dimensional morphologies inside the holes and display circular shapes along the ridge of the *** cell-material interactions are found according to the size and position of the holes,which provides theoretical foundation for the microstructure design of clinical C/C composites.

关键词： Carbon/Carbon composite matrix osteoblast growth behavior microstructure

Responses of Ammonia-Oxidizing Bacteria and Archaea in Two Agricultural Soils to Nitrification Inhibitors DCD and DMPP: A Pot Experiment

在线全文

学校读者我要写书评

暂无评论

Pedosphere 2013年第6期23卷 729-739页

作者： GONG Ping zhang li-li WU Zhi-Jie CHEN Zhen-Hua CHEN li-Jun Institute of Applied Ecology Chinese Academy of Sciences University of Chinese Academy of Sciences State Key Laboratory of Forest and Soil Ecology Institute of Applied EcologyChinese Academy of Sciences

Taking two important agricultural soils with different pH, brown soil （Hap-Udic Luvisol） and cinnamon soil （Hap-Ustic Luvisol）, from Northeast China, a pot culture experiment with spring maize （Zea mays L.） was conducted to study the dynamic changes in the abundance and diversity of soil ammonia-oxidizing bacteria （AOB） and ammonia-oxidizing archaea （AOA） populations during maize growth period in response to the additions of nitrification inhibitors dicyandiamide （DCD） and 3,4-dimethylpyrazole phosphate （DMPP） by the methods of real-time polymerase chain reaction （PCR） assay, PCR-denaturing gradient gel electrophoresis （DGGE）, and construction of clone library targeting the amoA gene. Four treatments were established, i.e., no urea （control）, urea, urea plus DCD, and urea plus DMPP. Both DCD and DMPP inhibited growth of AOB significantly, compared to applying urea alone. Soil bacterial amoA gene copies had a significant positive linear correlation with soil nitrate content, but soil archaeal amoA gene copies did not. In both soils, all AOB sequences fell within Nitrosospira or Nitrosospira-like groups, and all AOA sequences belonged to group 1.1b crenaxchaea. With the application of DCD or DMPP, community composition of AOB and AOA in the two soils had less change except that the AOB community composition in Hap-Udic Luvisol changed at the last two growth stages of maize under the application of DCD. AOB rather than AOA likely dominated soil ammonia oxidation in these two agricultural soils.

关键词： ammonium clone library denaturing gradient gel electrophoresis nitrate real-time polymerase chain reaction

Analytical Modeling of Dual Material Gate SOI MOSFET with Asymmetric Halo

在线全文

学校读者我要写书评

暂无评论

Journal of China University of Mining and Technology 2006年第3期16卷 308-311页

作者： li Zun-chao JIANG Yao-lin zhang li-li School of Electrical and Communication Engineering Xi＇an Jiaotong University Xi＇an Shanxi 710049 China

A dual material gate silicon-on-insulator MOSFET with asymmetrical halo is presented to improve short channel effect and carder transport efficiency for the first time. The front gate consists of two metal gates with different work functions by making them contacting laterally, and the channel is more heavily doped near the source than in the rest. Using a three-region polynomial potential distribution and a universal boundary condition, a two-dimensional analytical model for the fully depleted silicon-on-insulator MOSFET is developed based on the explicit solution of two-dimensional Poisson＇s equation. The model includes the calculation of potential distribution along the channel and subthreshold current. The performance improvement of the novel silicon-on-insulator MOSFET is examined and compared with the traditional silicon-on-insulator MOSFET using the analytical model and two-dimensional device simulator MEDICI. It is found that the novel silicon-on-insulator MOSFET could not only suppress short channel effect, but also increase cartier transoort efficiency noticeably. The derived analytical model agrees well with MEDICI.

关键词： SOI MOSFET dual material gate subthreshold current surface potential

Bio-replicated forming of the biomimetic drag-reducing surfaces in large area based on shark skin

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2008年第10期53卷 1587-1592页

作者： HAN Xin zhang DeYuan li Xiang li YuanYue School of Mechanical Engineering and Automation Beihang University Beijing 100083 China

On the investigation of biomimetic drag-reducing surface, direct replication of the firm scarfskins on low-resistance creatures to form biomimetic drag-reducing surfaces with relatively vivid morphology relative to the living prototype is a new attempt of the bio-replicated forming *** shark skin as the bio-replication template, the hot embossing method was applied to the microreplication of its outward morphology. Furthermore, the skins were jointed together to form the drag-reducing surface in large area. The results of the resistance measurements in a water tunnel according to the flat-plate sample pieces have shown that the biomimetic shark-skin coating fabricated by the bio-replicated forming method has significant drag reduction effect, and that the drag reduction efficiency reached 8.25% in the test conditions.

关键词：鲨鱼皮生物复制成型热压纹生物学

High performance liquid chromatography with immobilized Ru(bpy)_3^(2+)-KMnO_4 chemiluminescence detection and its application in metabolism of repaglinide in pig liver microsomes

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2011年第10期22卷 1245-1248页

作者： Ai Hua Fu Zhu Jun zhang li li Chen Xiao Ming zhang Pan Xue Key Laboratory of Analytical Chemistry for life Science of Shaanxi Province School of Chemistry and Materials Science Shaanxi Normal University Xi＇ an 710062 China

A novel high performance liquid chromatography-chemiluminescence（HPLC-CL） method for investigation of in vitro metabolism of repaglinide in pig liver microsomes with microdialysis sampling technique was *** chromatographic separation was performed on a Hypersil BDS-C18 column with an isocratic mobile phase consisting of methanol and 0.01 mol/L KH_2PO_4（pH 3.0）（volume ratio 75：25） at a flow rate of 1.0 mL/*** detection was based on the chemiluminescence reaction of repaglinide with acidic potassium permanganate（KMnO_4） and tris（2,2＇-bipyridyl）ruthenium（Ⅲ）（Ru（bpy）_3^（3＋））,which was immobilized on the cationic ion-exchange resin for obtaining high sensitivity and reducing consumption of expensive reagent.

关键词： High performance liquid chromatography Chemiluminescence Microdialysis Repaglinide Immobilized Ru(bpy)_3^(2+)