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35篇 您的检索式:作者名="Chao 1"
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1Laparoscopic Partial Nephrectomy With Segmental Renal Artery Clamping:Technique and Clinical Outcomes显示文摘Background:Warm ischemic injury is one of the most important factors affecting renal function in partial nephrectomy(PN).The technique of segmental renal artery clamping emerges as an alternative to conventional renal artery clamping for renal hilar control.Objective:To evaluate the feasibility and efficiency of laparoscopic PN(LPN) with segmental renal artery clamping in comparison with the conventional technique.Design,setting,and participants:A total of 75 patients underwent LPN from June 2007 to November 2009.All patients had T1a or T1b tumor in one kidney and a normal contralateral kidney.Thirty-seven patients underwent surgeries with main renal artery clamping,and 38 underwent surgeries with segmental artery clamping.Intervention:All procedures were performed by the same laparoscopic surgeon.Measurements:Blood loss,operation time,warm ischemia(WI) time,and complications affected renal function before and after operation were recorded.Results and limitations:All LPNs were completed without conversion to open surgery or nephrectomy.The novel technique slightly increased WI time(p < 0.001) and intraoperative blood loss(p = 0.006),while it provided better postoperative affected renal function(p < 0.001) compared with the conventional technique.The total complication rate was 12%.Among the 38 cases where segmental renal artery clamping was performed,7 had to convert to the conventional method.Tumor size and location influenced the number of clamped segmental arteries.Long-term postoperative renal function is still awaited.Conclusions:LPN with segmental artery clamping is safe and feasible in clinical practice.It minimizes the intraoperative WI injury and improves early postoperative affected renal function compared with main renal artery clamping.(C) 2010 European Association of Urology.Published by Elsevier B.V.All rights reserved.Shao,P.F. Qin,C. Yin,C.J. Meng,X.X. Ju,X.B. Li,J. Lü,Q.A. Zhang,W. Xu,Z.Q.Shao,Pengfei Qin,Chao Yin,Changjun Meng,Xiaoxin Ju,Xiaobing Li,Jie Lü,Qiang Zhang,Wei Xu,Zhengquan] Nanjing Med Univ,Affiliated Hosp 1,Dept Urol,Nanjing,Peoples R China.Guangzhou Rd 300,Nanjing 210029,Peoples R China. 2011南京医科大学学报(自然科学版)2011,31,7:123
2The prognostic value of preoperative serum levels of CEA,CA19-9 and CA72-4 in patients with colorectal cancer显示文摘INTRODUCTIONCarcinoembryonic antigen ( CEA) , originally described by Gold and Freedman [1] in 1965, is now an acknowledged member of immunoglobulin superfamily[2],with a role as an intracellular adhesion molecule[3].Carbohydrate antigen 19-9(CA19-9), obtained with a monoclonal antibody produced by immunizing a monoclonal antibody produced by immunizing a mouse with a colonic cancer cell line in 1979[4],is a ligand for E-selectin that plays an important role in the addhesion of cancer cells to endothelial cells [5,6].Chao Xu Zheng~1 Wen Hua Zhan~1 Ji Zong Zhao~2 Dong Zheng~3 Dong Ping Wang~1 Yu Long He~1 Zhang Qing Zheng~1 ~1Department of General Surgery,~2Laboratory of Surgery,~3Department of Medicine,First Affiliated Hospital,Sun Yat-Sen University of Medical Sciences,Guangzhou 510080,Guangdong Province,ChinaDr.Chao Xu Zheng now working as a surgeon and lecturer in the Department of General Surgery,First Affiliated Hospital,Sun Yat-Sen University of Medical Sciences,who is a Ph.D.student,having 7 papers published. 2001World Journal of Gastroenterology2001,7,3:25
3Overexpression of P53 and its risk factors in esophageal cancer in urban areas of Xi′an显示文摘OverexpressionofP53anditsriskfactorsinesophagealcancerinurbanareasofXi′anQIAOGuiBin1,HANChengLong2,JIANGRenChao1,SUNChang?..QIAO GuiBin1, HAN ChengLong2, JIANG RenChao1, SUN ChangSheng3, WANG Yan3 and WANG YunJie3 1998World Journal of Gastroenterology1998,4,1:21
4Study on Quenching and Tempering Process of Q960 High Strength Steel for Construction Machinery显示文摘To develop the Q960 high-strength quenched and tempered steel plates for construction machinery,the effects of quenching and tempering treating regime on the microstructures and mechanical properties were investigated.The results show that the perfect austenization and fine grain size can be achieved by the optimum quenching process that is quenching temperature 900℃ and holding time 20min.Considering performance and production efficiency,the optimum tempering process parameters are found that tempering temperature 600℃ and holding time 40min.The excellent overall properties of specimens with tempered sorbite microstructure can be ultimately obtained.The yield strength is 1030MPa,tensile strength 1080MPa,percentage elongation 16.8% and the Charpy impact energy 144J at-40℃.All these indexes come up to the National Standard GB/T 16270-2009.WANG Zhao-dong 1,KANG Jian 1,LU Feng 1,2,DENG Xiang-tao 1,WANG Chao 1,WANG Guo-dong 1 (1.State Key Lab of Rolling and Automation,Northeastern University,Shenyang 110004,Liaoning,China 2.Wide Heavy Plate Project Department of Tangshan Iron and Steel Corporation,Tangshan 063000,Hebei,China) 2011Journal of Iron and Steel Research(International)2011,18,S1:13
5Investigation of Induced Distortions in a-Si∶H/a-SiN_x∶H Multilayers by Raman Scattering Technique显示文摘The a Si∶H/SiN x ∶H sample series are investigated by means of Raman scattering technique(RST). The result shows that due to the structural mismatch between a Si∶H and a SiN x ∶H, severe induced distortions are produced in the interface of the heterojunction, and these induced distortions tend towards a certain energy state. The ordering of the interface structure depends on the periodic number of multilayer thin films.CAO Guo rong 1, GUO Shen kang 1, WANG Zhi chao 2, LIU Yin chun 2, SUN Mei xiang 2 (1.Dept. of Phys., Jiangsu University, Zhenjiang 212003, CHN 2.Dept. of Phys., Nanjing University, Nanjing 210093, CHN) 2002Semiconductor Photonics and Technology2002,8,4:8
6Liver metastasis models of human colorectal carcinoma established in nude mice by orthotopic transplantation and their biologic characteristics显示文摘INTRUDUCTIONSomemodelsofnudemicethatfreshhumancolorectalcarcinomatisueorcelsweresuccesfulytransplantedsubcuteneouslyhavebeenr...LIU Qiu Zhen 1, TUO Chao Wei 1, WANG Bin 1, WU Bing Quan 2 and ZHANG Yan Hua 1 1998World Journal of Gastroenterology1998,4,5:6
7Heat shock protein 72 normothermic ischemia,and the impact of congested portal blood reperfusion on rat liver显示文摘INTRODUCTIONFrom the technical aspect of liver surgery ,control of bleeding during hepatic parenchymal resection is one of the most important procedures in hepatectomy .Pringle,s maneuver ,a temporary cross-clamping of the hepatoduodnal ligament ,has often been used for this purpose[1],This is the simplest and userul technique to reduce intraoperative blood loss .Chao Liu Dai~1 Zhen Long Xia~1 Makoto Kume~2 Yuzo Yamamoto~2 Kazuhiko Yamagami~2 Nobuhiro Ozaki~2 Yoshio Yamaoka~2 ~1Department of Surgery,The Second Clinical College of China Medical University,Shenyang 110003,Liaoning Province,China ~2Department of Gastroenterological Surgery,Kyoto University Graduate School of Medicine,Kyoto,Japan 2001World Journal of Gastroenterology2001,7,3:6
8Expression,purification and immunocharacteristics of recombination UreB protein of H.pylori显示文摘INTRODUCTIONHelicobacter pylori (H . pylori) is associated with the development of chronic gastritis ,peptic ulcer and gastric cancer and gastric MALT lymphoma[1-9],H .pylori has many antigens ,including urease ,heat shock protein and vacuolating cytotoxin and so on ,and urease is an important factor in the colinization of the gastric mucosa and suspected to cause damage to the gastric mucosa[10-14].At the same time ,urdase is also one of the important protective antigens .Chao Wu~1 Quan Ming Zou~1 Hong Guo~2 Xiao Peng Yuan~1 Wei Jun Zhang~1 Dong Shui Lu~1 Xu Hu Mao~1 ~1Department of Clinical Microbiology,Third Military Medical University,Chongqing 400038,China ~2Department of Gastroenterology,Xinqiao Hospital,Third Military Medical University,Chongqing 40003?,ChinaDr.Chao Wu graduated from Third Military Medical University as a postgraduate in 2000,now a lecturer,specialized in diagnosis,prevention and therapy of Helicobacter pylori infection,having 6 papers published. 2001World Journal of Gastroenterology2001,7,3:5
9Detection of enteroviruses and hepatitis a virus in water by consensus primer multiplex RT-PCR显示文摘AIM: To develop a rapid detection method ofenteroviruses and Hepatitis A virus (HAV).METHODS: A one-step, single-tube consensus primersmultiplex RT-PCR was developed to simultaneouslydetect Poliovirus, Coxsackie virus, Echovirus and HAV.A general upstream primer and a HAV primer and fourdifferent sets of primers (5 primers) specific forPoliovirus, Coxsacki evirus, Echovirus and HAV cDNAwere mixed in the PCR mixture to reverse transcriptand amplify the target DNA.Four distinct amplified DNAsegments representing Poliovirus, Coxsackie virus,Echovirus and HAV were identified by gelelectrophoresis as 589-,671-, 1084-, and 1128bpsequences, respectively. Semi-nested PCR was used toconfirm the amplified products for each enterovirus andHAV.RESULTS: All four kinds of viral genome RNA weredetected, and producing four bands which could bedifferentiated by the band size on the gel.To confirmthe specificity of the multiplex PCR products, semi-nested PCR was performed. For all the four strainstested gave positive results .The detection sensitivityof multiplex PCR was similar to that of monoplex RT-PCR which was 24 PFU for Poliovrus, 21 PFU forCoxsackie virus,60 PFU for Echovirus and 105 TCID50for HAV. The minimum amount of enteric viral RNAdetected by semi-nested PCR was equivalent to 2.4 PFUfor Poliovrus, 2.1 PFU for Coxsackie virus, 6.0 PFU forEchovirus and 10.5 TCID50 for HAV.CONCLUSION: The consensus primers multiplex RT-PCRhas more advantages over monoplex RT-PCR for entericviruses detection, namely, the rapid turnaround timeand cost effectiveness.Jun-Wen Li Xin-Wei Wang Chang-Qing Yuan Jin-Lai Zheng Min Jin Nong Song Xiu-Quan Shi Fu-Huan Chao Department of Environment and Health,Institute of Health and Environmental Medicine of Tianiin,1 Da Li Road.Tianjin 300050,China 2002World Journal of Gastroenterology2002,8,4:4
10Effects of L-arginine during ischemia-reperfusion injury in rat orthotopic liver transplantation显示文摘EfectsofLarginineduringischemiareperfusioninjuryinratorthotopiclivertransplantationDIAOTongJin1,YAOXiaoPing2,JIBing1,YANG...DIAO Tong Jin 1, YAO Xiao Ping 2, JI Bing 1, YANG Jia Mei 2, WU Meng Chao 2 and ZHANG Shao Geng 3 1Department of General Surgery, Chinese PLA 401 Navy Hospital, Qingdao 266071, Shandong Province, China 2Eastern Hospital of Hepa 1998World Journal of Gastroenterology1998,4,3:4
11Implementation of broadband low-sidelobe beamforming in time domain显示文摘In modern active and passive sonar systems, broadband beamforming for acoustic arrays is widely used to suppress unwanted interference and to detect target signals of interest. A broadband low sidelobe beamforming scheme in time domain is proposed in this paper. The first step of this scheme is to delay the outputs of each element in the acoustic array by a tapped-delay-line (TDL) to accomplish the integer part of the time delay need to form a beam. Then, finite impulse response (FIR) digital filters are used to implement the fractional part of the time delay. The weighting coefficients for all array elements at different frequencies to realize the low sidelobe beams are also implemented with the FIR digital filters. Finally, the outputs of the digital filters are summed up to yield the time domain beam output. The design of low sidelobe beam pattern and that of the FIR digital filters are two crucial technical issues in this beamforming procedure. The low sidelobe beams of each sub-band are designed using the optimized beam synthesis approach based on the principle of MVDR beamforming. An improved adaptive approach are used for the design of FIR digital filters, and the design requirements of these filters were specified by the weights of low sidelobe beams of each sub-band over the broad frequency band. Results of computer simulation for a twelve-element arc array show that the beamforming scheme is very effective in forming low sidelobe broadband beam.YANG Yixin~1, SUN Chao, MA Yuanliang (Institute of Acoustic Engineering, Northwestern Polytechnical University, Xi’an 710072, China) 2003声学技术2003,22,z1:2
12Effects of MoS_2 on mechanical and tribological properties of NiCr-based alloys显示文摘Ni Cr based alloys with a wide temperature range self lubrication were made by hot pressing the mixture powder of alloyed Ni Cr powder, elemental Mo, Al, Ti and B powders and MoS 2 powder. The mechanical and tribological properties of these alloys when rubbing with Al 2O 3 ceramics and W18Cr4V high speed steel were measured in the temperature range of 20~700 ℃, and the mechanisms of self lubrication and wear resistance were studied. The results showed that the alloy containing 10% MoS 2 has the best combination of mechanical properties, antifriction and wear resistance. Over a wide temperature range from 20 ℃ to 700 ℃, when rubbing with Al 2O 3, its friction coefficient and wear rate are 0.19~0.3 and (1.1~1.5)10 -14 m 3/(N·m), respectively; when rubbing with the high speed steel, those values are 0.18 ~ 0.26 and (0.6~3.2)×10 -15 m 3/(N·m), respectively.XIONG Dang sheng(熊党生) 1, PENG Chao qun(彭超群) 2, LIU Jin long(刘金龙) 1 1. College of Mechanical Engineering, China University of Mining and Technology, Xuzhou 221008, P.R.China 2. State Key Lab for Powder Metallurgy, Central South Unive 2000中国有色金属学会会刊:英文版2000,10,3:2
13Semi-analytical analysis of the response of the air temperature over the land surface to the global vegetation distribution显示文摘Response of the air temperature over the land surface to the global vegetation distribution is investigated, using a three-dimensional governing equation to simulate the steady, large-scale, limited amplitude perturbation of the free, inviscid and adiabatic atmosphere. The adoption of the static equation leads to a temperature governing equation in the terrain following coordinate. With the prescribed temperature as the upper boundary condition and the radiation balance as the lower boundary condition, the semi-analytical solution of the global circulation temperature can be calculated. In this article, only the air temperature (at 2 m height) over the land surface is analyzed, and the result suggests that this model can simulate the air temperature pattern over the land surface reasonably. A better simulation occurs when a simple feedback of the albedo on the temperature is included. Two sensitivity experiments are analyzed through this model. One suggests that the air temperature over the land surface descends obviously when the land surface is covered with ice all over, while another suggests that the air temperature rises a little when the land surface is covered with forest except the ice-covered area. This model appears to be a good tool to study the response of the air temperature to the vegetation distribution. Limitations of the model are also discussed.LIU Fei1,2 & CHAO JiPing3,4 1 Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China 2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China 3 National Marine Environmental Forecasting Center, Beijing 100081, China 4 First Institute of Oceanography, State Oceanic Administration of China, Qingdao 266061, China 2009Chinese Science Bulletin2009,54,14:2
14Application of ERS-1 scatterometer data to studying land surfaces ──Distributive characteristic of backscattering coefficient over China land surfaces显示文摘ERS 1 WSC data were obtained by international cooperation. The distributive characteristics of radar backscattering coefficient image of China land surface are analyzed and the research results are presented. The capability of ERS 1 WSC data for monitoring land surfaces is investigated. The results show that the radar backscattering coefficient images can reveal the natural landform features of China land. Using the WSC data can discriminate six types of major land coverage, including evergreen vegetation and snow covered region, vegetation and crops, mountains, grassland, desert and grassland, desert. On the whole, the radar backscattering coefficient image of China land is the synthesis of the vegetation map and terrain map. Statistical study of the typical terrain shows that the radar backscatter coefficients of China land range from -29 dB to -5 dB. The lowest value corresponds to the deserts of Badain Jaran, Takla Makan, and Tengger. The highest value corresponds to snow covered regions of Himalaya Mountains and Tianshan Mountains.WANG Xiangyun 1, WANG Chao 2, GUO Huadong 2 and SHI Yangshen 1 1. Department of Earth Sciences, Nanjing University, Nanjing 210093, China 2. Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, China 1998Chinese Science Bulletin1998,43,23:1
15A critical reappraisal of allopurinol dosing, safety, and efficacy for hyperuricemia in gout 显示文摘Chao 1 Terkeltaub R 2009CUff Rheumatol Rep2009,11,2:1
16Martingale Analysis for Assets with Discontinuous Returns 显示文摘Bardha I X 1 Chao 1995Mathematics of Operations Research1995,,20:1
17Intensity-modulated radia- tion therapy (IMRT) reduces small bowel,rectum and bladder doses in patients with cervical cancer receiving pelvic and para- aortic irradiation显示文摘Portelance 1 Chao KS Grigsby PW 2001Int Radiat oncol Biol Phys2001,51,1:1
18InterPlaNetary Internet: State-of-the-art and research challenges 显示文摘AKYILDIZ 1 F AKANO B CHEN CHAO 2003Computer Networks2003,43,2:1
19Induction of an angiogenic phenotype in endometriotic stromal cell cultures by interleukin-1 beta显示文摘Lebovic D 1 Bentzien F Chao V A 2000Mol Hum Reprod2000,6,3:1
20Development of single drive electrode electrical resistance tomography system显示文摘Dong Feng Tan Chao 1 iu Junwen 2006IEEE Transactions on Instrumentation & Measurement2006,55,4:1
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