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Diagnostic value of magnetic resonance cholangiopancreatography in choledocholithiasis

World Journal of Gastroenterology 2015年第11期21卷 3351-3360页

作者： Wen Chen Jing-Jia Mo Li Lin Chao-Qun Li jian-feng zhang Department of Educational Administration The First Affiliated Hospital of Guangxi Medical University Department of Emergency The First Affiliated Hospital of Guangxi Medical University

AIM:To evaluate the diagnostic accuracy of magnetic resonance cholangiopancreatography(MRCP) in patients with ***:We systematically searched MEDLINE,EMBASE,Web of Science,and Cochrane databases for studies reporting on the sensitivity,specificity and other accuracy measures of diagnostic effectiveness of MRCP for detection of common bile duct(CBD) *** analysis was performed using random effects models,and receiver operating characteristic curves were generated to summarize overall test *** reviewers independently assessed the methodological quality of studies using standards for reporting diagnostic accuracy and quality assessment for studies of diagnostic accuracy ***:A total of 25 studies involving 2310 patients with suspected choledocholithiasis and 738 patients with CBD stones met the inclusion *** average inter-rater agreement on the methodological quality checklists was *** analysis of the ability of MRCP to detect CBD stones showed the following effect estimates:sensitivity,0.90(95%CI:0.88-0.92,χ2 = 65.80; P < 0.001); specificity,0.95(95%CI:0.93-1.0,χ2 = 110.51; P < 0.001); positive likelihood ratio,13.28(95%CI:8.85-19.94,χ2 = 78.95; P < 0.001); negative likelihood ratio,0.13(95%CI:0.09-0.18,χ2 = 6.27; P < 0.001); and diagnostic odds ratio,143.82(95%CI:82.42-250.95,χ2 = 44.19; P < 0.001).The area under the receiver operating characteristic curve was *** publication bias was not detected(P = 0.266).CONCLUSION:MRCP has high diagnostic accuracy for the detection of *** should be the method of choice for suspected cases of CBD stones.

关键词： Choledocholithiasis Diagnosis Magnetic resonance c

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Optimization of Ethylene Glycol Doped PEDOT:PSS Transparent Electrodes for Flexible Organic Solar Cells by Drop-coating Method

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Chinese Journal of Polymer Science 2019年第8期37卷 760-766页

作者： Hui-Qin Cui Rui-Xiang Peng Wei Song jian-feng zhang Jia-Ming Huang Li-Qiang Zhu Zi-Yi Ge Faculty of Materials Science and Chemical Engineering Ningbo University Ningbo 315211 China Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo 315201 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 China

Fabrication of flexible transparent electrodes(FTEs) is one of the core technologies in the field of flexible electronics. Among multiple choices of FTEs, poly(3,4-ethylenedioxythiophene):poly(styrene-sulfonic acid)(PEDOT:PSS) has shown its promising application in roll-to-roll manufacturing. A simple yet effective method for substantially boosting the conductivity of these conducting polymer films without causing large-domain aggregations is by adding ethylene glycol(EG) as dopant. Herein, we investigated in detail the effects of the secondary solvent of ethylene glycol(EG) on the optical and electrical characteristics of PEDOT:PSS films. The modified PEDOT:PSS FTEs were deposited using drop-coating techniques as it had greater compatibility for large-area samples than the conventional spin-coating method did. The 6% EG-doped PEDOT:PSS FTE via drop-coating method achieved a high figure of merit(FoM) value of 47.24 and the devices fabricated using the optimal PEDOT:PSS FTE yielded a high power conversion efficiency(PCE) of 8.89%, mostly attributed to the modified PEDOT:PSS films that had excellent optical and electrical characteristics with low surface roughness. These results suggested that EG-doping could effectively boost the conductivity of PEDOT:PSS films and that the modified PEDOT:PSS FTE is suitable for roll-to-roll manufacturing in the future.

关键词： PEDOT:PSS Doping Conductivity Flexible transparent electrodes Organic solar cells

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Estimating the prevalence of schistosomiasis japonica in China:a serological approach

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Infectious Diseases of Poverty 2018年第1期7卷 601-610页

作者： Xin-Yao Wang Jing Xu Song Zhao Wei Li jian-feng zhang jian He Ashley M.Swing Kun Yang jiangsu Institute of Parasitic Diseases Yangxiang117#MeiyuanWuxi 214064JiangsuChina Key Laboratory on Technology for Parasitic Disease Prevention and Control Ministry of HealthJiangsu Provincial Key Laboratory on the Molecular Biology of ParasitesYangxiang117#MeiyuanWuxi 214064JiangsuChina Public Health Research Center Jiangnan UniversityJiangsuShengChina National Institute of Parasitic Diseases Chinese Center for Disease Control and PreventionShanghaiChina

Background:The prevalence of schistosomiasis japonica has decreased significantly,and the responses changing from control to elimination in jiangsu Province,*** to estimate the change in prevalence of schistosomiasis using only serological data will be important and ***:We collected serum samples from 2011 to 2015 to build a serum bank from Dantu County of jiangsu,*** samples were detected by enzyme-linked immunosorbent assay(ELISA),the positive rate and optical density(OD)value were *** Bayesian model including the prior information of sensitivity and specificity of ELISA was established,and the estimated infection rates were obtained for different years,genders and age ***:There was no significant difference in the mean OD between different years and genders,but there was a significant difference between the different age *** were statistically significant differences in the positive rate for different years and age groups,but no significant difference at different *** estimated infection rate for the five years was 1.288,1.456,1.032,1.485 and 1.358%,*** was no significant difference between different years and between genders,but a significant difference between different age ***:The risk of schistosomiasis transmission in this area still exists,and risk monitoring of schistosomiasis should be strengthened.

关键词： Enzyme-linked immunosorbent assay(ELISA) Bayesian statistics Schistosomiasis japonica Sensitivity Specificity Estimated infection rate

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Crystal Structure of 1-Methyl-5-phenylhydantoin

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Chinese Journal of Structural Chemistry 2000年第4期19卷 249-252页

作者： QIU Li Hua * (Department of Chemistry, Suzhou Medical College, Suzhou, 215007) [WT4”BZ]GE jian feng zhang De Chun ZOU jian Ping (Department of Chemistry, Suzhou University, Suzhou, 215006) 苏州医学院江苏苏州 2 1 50 0 7 苏州大学江苏苏州 2 1 50 0 6

The title compound (C 10H 10N 2O 2 , M r =190.20), 1 methyl 5 phenylhydantoin (1 methyl 5 phenyl 2, 4 imidazolidinedione) was synthesized by the reaction of 2 hydroxy 2 methylthio acetophenone ( α benzoyl hemithioacetal) with methylurea in slightly acidic medium. The crystal was crystallized in the orthorhombic system, space group Pbca with parameters a=18.077(5), b=14.386(2), c=7.035(1), Z=8, V=1829(1) 3, D c =1.381 g/cm 3, μ (Mo Kα )=0.99cm -1, F(000)=800, R=0.040, R w =0.050 for 1395 observed reflections [ I>3σ(I )]. It consists of a planar benzene ring and an imidazole ring, whose dihedral angle is 96.32°. In the title crystal, the glide c related molecules ( x, 1/2-y, -1/2+z ) form chains, which are further related by the screw axis ( 1-x, 1/2+y, 1/2-z ), forming networks along the bc plane. The networks are centrosymmetrically packed (1- x, -y, -z).

关键词： crystal structure 1 methyl 5 phenylhydantoin bioelectric activity.

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Expert Consensus on Nurses'Human Caring for COVID-19 Patients in Different Sites

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Current Medical Science 2020年第4期40卷 602-607页

作者： feng-jian zhangI De-ying HU Yi-lan LIU Hong LI Xiao ping ZHU Shao-shan PAN Union Hospital Tongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Fiujian Provincial Hospital Fujian 350001China Zhongnan Hospital Wuhan UniversityWuhan 430071China General Hospital of Southern Theatre Command of China People's Liberation Army Guangzhou 510010China

Summary:This study aims to develop the expert consensus on nurse's human caring for Corona Virus Disease 2019(COVID-19)patients in different sites,and thus provide a guideline on providing whole process and systematic caring for COVID-19 *** on the frontline experiences of human caring for COVID-19 patients and the review of literature,the initial draft of consensus was made and finalized after online meeting and *** experts reached consensus on the following parts:terms and definitions,principles of human caring for COVID-19 patients,and human caring measures for COVID-19 patients in different *** expert consensus is practical,concise,and reasonable for guiding the nurses providing human caring for COVID-19 patients,as well as other similar infectious diseases.

关键词： human caring nursing expert consensus COVID-19

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Living donor liver transplantation in 43 children with biliary atresia: a single-center experience from the mainland of China

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Hepatobiliary & Pancreatic Diseases International 2012年第3期11卷 250-255页

作者： jian-Jun Zhu, Qiang Xia, jian-Jun zhang, feng Xue, Xiao-Song Chen, Qi-Gen Li and Ning XuAuthor Department of Liver Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China Department of Liver Surgery Renji Hospital Shanghai Jiaotong University School of Medicine Shanghai 200127 China

BACKGROUND: There is no large-cohort report on living donor liver transplantation (LDLT) for biliary atresia (BA) patients from the mainland of China. This single-center study describes our initial experience with 43 LDLTs for BA patients aged two years or younger. METHODS: In this study, the eligibility criteria were BA as the primary diagnosis and two years of age or younger. From October 2006 to December 2010, the clinical data of 43 LDLTs, including pre-operative evaluations, surgical techniques, postoperative complications and outcomes of donors and recipients, were retrospectively analyzed. RESULTS: Donor graft type was the left lateral segment with compatible ABO blood groups. Forty-three recipients were selected in this study. The median patient age at operation was 9 months (range 6-24), and the median body weight was 8 kg (range 5.7-12.5). Fourteen (32.6%) recipients received Kasai operations before liver transplantation. The overall one- and two-year cumulative survival rates for grafts and recipients were 81%, 81% and 76%, 76%, respectively. No donor mortality was encountered, with a minimal morbidity and no long- term sequelae. Nine out of 43 recipients died. Postoperative complications of recipients were biliary leakage and refluxing cholangitis (11/43, 25.6%), hepatic artery thrombosis (4, 9.3%), pulmonary infections (4, 9.3%), portal vein thrombosis (3, 7.0%), wound disruption (3, 7.0%), acute rejection (3, 7.0%), cytomegalovirus infection (2, 4.7%), and intra-abdominal bleeding (1, 2.3%).CONCLUSION: Despite the relatively low survival rates due to lack of experience initially, LDLT still provides encouraging outcomes for pediatric recipients with BA, even small children under two years old.

关键词： living donor liver transplantation biliary atresia children

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Rho signaling inhibitor,Y-27632,inhibits invasiveness of metastastic hepatocellular carcinoma in a mouse model

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Chinese Medical Journal 2007年第24期120卷 2304-2307页

作者： XUE feng zhang jian-jun QIU feng zhang Ming CHEN Xiao-song LI Qi-gen HAN Long-zhi XI Zhi-feng XIA Qiang Organ Transplantation Center Renji Hospital Shanghai Jiao TongUniversity School of Medicine Shanghai 200127 China

Hepatocellular carcinoma(HCC)is among the mostcommon tumors *** extensiveexploration of novel therapies,the prognosis of HCCpatients with intrahepatic metastasis is still poor,and notreatment is effective against ***,... 详细信息

关键词： ROCK inhibitor hepatocellular carcinoma metastasis apoptosis invasiveness

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局部共形对称黎曼流形的孤立现象

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数学学报（中文版） 2014年第6期57卷 1191-1198页

作者：张剑锋丽水学院数学系丽水323000

讨论了局部共形对称的封闭黎曼流形,证明了黎曼曲率张量模长的一个拼挤定理.当M是局部共形平坦流形时,得到了曲率张量模长的最佳拼挤常数,并确定了达到该值的黎曼流形.

关键词：局部共形对称局部共形平坦黎曼曲率张量 Weyl张量 Schouten张量

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High-resolution angle-resolved photoemission study of large magnetoresistance topological semimetal CaAl4

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Chinese Physics B 2021年第9期30卷 490-494页

作者： Xu-Chuan Wu Shen Xu jian-feng zhang Huan Ma Kai Liu Tian-Long Xia Shan-Cai Wang Department of Physics Beijing Key Laboratory of Optoelectronic Functional Materials and Micro-nano DevicesRenmin University of ChinaBeijing 100872China

Extremely large magnetoresistance(XMR)has been explored in many nonmagnetic topologically nontrivial/trivial semimetals,while it is experimentally ambiguous which mechanism should be responsible in a specific material due to the complex electronic *** this paper,the magnetoresistance origin of single crystal CaAl4 with C2/m structure at low temperature is investigated,exhibiting unsaturated magnetoresistance of~3000%at 2.5 K and 14 T as the fingerprints of XMR *** the combination of ARPES and the first-principles calculations,we elaborate multiband features and anisotropic Fermi surfaces,which can explain the mismatch of isotropic two-band *** the structural phase transition from I4/mmm to C2/m has been recognized,the subtle impact on electronic structure is revealed by our ARPES *** that both charge compensation and potential topologically nontrivial band structure exist in CaAl4,our findings report CaAl4 as a new reference material for exploring the XMR phenomena.

关键词： magnetoresistance angle-resolved photoemission spectroscopy(ARPES) topological semimetal

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One Eye Suffering from Ocular Decompression Retinopathy after Trabeculectomy in a Patient with Juvenile Open-Angle Glaucoma

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Chinese Medical Journal 2018年第3期131卷 366-367页

作者： Lei Shao Chun-Yan Qiao Yu-Fang Su jian-feng zhang Beijing Tongren Eye Center Beijing Tongren Hospital Capital Medical University Beijing 100730 China Department of Ophthalmology Inner Mongolia Baotou Chaoju Ophthalmic Hospital Baotou Inner Mongolia 014060 China Department of Ophthalmology People's Hospital Baoji Shaanxi 721000 China

Ocular decompression retinopathy （ODR） is characterized by scattered retinal hemorrhage following acute reduction of intraocular pressure （IOP）.It is frequently associated with glaucoma-filtering surgery but also found in some of the other ocular surgeries such as vitrectomy and even in patients with lOP-lowering medication, One of the possible underlying mechanisms could be the sudden increase in retinal intravascular flow as a result of hypotony and defective autoregulation of blood vessels.

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