检索结果-南通市图书馆

Port site and distant metastases of gallbladder cancer after laparoscopic cholecystectomy diagnosed by positron emission tomography

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2008年第41期14卷 6428-6431页

作者： Jian-Bin Hu xiao-Nan sun jing Xu Chao He Department of Radiation Oncology of Sir Run Run Shaw Hospital Sir Run Run Shaw institute of Clinical Medicine of Zhejiang University Zhejiang University School of Medicine Hangzhou 310016 Zhejiang Province China Department of Colorectal Surgery of Sir Run Run Shaw Hospital Zhejiang University School of Medicine Hangzhou 310016 Zhejiang Province China

We report port site and distant metastases of unsuspected gallbladder cancer after laparoscopic cholecystectomy diagnosed by positron emission tomography （PET） in two patients. Patient 1, a 72-yearold woman was diagnosed as cholelithiasis and cholecystitis and received laparoscopic cholecystectomy. Unsuspected gallbladder cancer was discovered with histological result of well-differentiated squamous cell carcinoma of the gallbladder infiltrating the entire wall. A PET scan using F-18-fluorodeoxyglucose （FDG- PET） before radical resection revealed residual tumor in the gallbladder fossa and recurrence at port site and metastases in bilateral hilar lymph nodes. Patient 2, a 69-year-old woman underwent laparoscopic cholecystectomy more than one year ago with pathologically confirmed unsuspected adenosquamous carcinoma of stage pTlb. At 7-mo follow-up after surgery, the patient presented with nodules in the periumbilical incision. Excisional biopsy of the nodule revealed adenosquamous carcinoma. The patient was examined by FDG-PET, demonstrating increased FDG uptake in the right lobe of the liver and mediastinal lymph nodes consistent with metastatic disease. This report is followed by a discussion about the utility of FDG-PET in the gallbladder cancer.

关键词： Gallbladder cancer Positron emission tomography Fluorodeoxyglucose

Evolution of gas kick and overflow in wellbore and formation pressure inversion method under the condition of failure in well shut-in during a blowout

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Petroleum Science 2022年第2期19卷 678-687页

作者： Guo-Shuai Ju Tie Yan xiao-Feng sun jing-Yu Qu Qiao-Bo Hu College of Petroleum Engineering Northeast Petroleum UniversityDaqing163318HeilongjiangPeople's Republic of China

With ongoing development of oil exploration and techniques,there is a significant need for improved well control strategies and formation pressure prediction *** this paper,a gas-liquid transient drift flow model was established according to the gas-liquid two-phase flow characteristics during the gas kick.A Roe scheme was used for numerical calculation based on the finite volume *** changes of bottom-hole pressure,casing pressure,the development law of cross-sectional gas holdup,and gas velocity,along with the vertical well depth,were analyzed through simulation *** time-series characteristics of mud pit gain were obtained by adjusting the formation *** complex nonlinear mapping relationship between the formation parameters and the mud pit gain was *** long short-term memory network(LSTM)of deep learning was used to obtain a formation pressure inversion when the blowout is out of control and the well cannot be *** data from a well were used to verify the gas-liquid two-phase transient drift flow model based on the finite volume method,demonstrating that this method is reliable,with greatly improved prediction *** approach provides theoretical support for the early monitoring of gas kick during drilling,and for well-killing design and construction after uncontrolled blowout.

关键词： Gas kick Formation pressure Multiphase flow Computational model Long short-term memory

356例高血压住院患者素食与中医证候特征调查分析

在线全文

学校读者我要写书评

暂无评论

天津中医药 2017年第6期34卷 370-372页

作者：戴国华刘小翠孙经兴刘刚高武霖山东中医药大学附属医院济南250014 山东省日照市中医医院日照276800 山东力明科技职业学院济南250116 山东中医药大学济南250014

[目的]调查高血压患者中医证候类型和饮食情况,分析素食与高血压中医证候之间的相关性。[方法]采用流行病学研究方法,选择山东中医药大学附属医院2015年7月1日—12月31日收治的356例高血压住院患者,应用食物频率法调查饮食情况,依据《... 详细信息

[目的]调查高血压患者中医证候类型和饮食情况,分析素食与高血压中医证候之间的相关性。[方法]采用流行病学研究方法,选择山东中医药大学附属医院2015年7月1日—12月31日收治的356例高血压住院患者,应用食物频率法调查饮食情况,依据《中药新药临床研究指导原则》辨别高血压中医证型,多因素logistic回归分析素食与高血压中医证型的关系。[结果]素食组(蔬菜水果占饮食结构的80%及以上者)187例,其中低强度组(蔬菜水果占饮食结构的80%-90%者)120例,高强度组(蔬菜水果占饮食结构的90%及以上者)67例;痰湿壅盛型142例(39.89%),肝火亢盛型101例(28.37%),阴阳两虚型80例(22.47%);素食强度是痰湿壅盛型、肝火亢盛型、阴虚阳亢型的相关因素(P<0.05),其OR值分别为13.259、0.237、0.591。[结论]素食与高血压痰湿壅盛型、肝火亢盛型和阴虚阳亢型有相关性,适当增加素食比例能降低痰湿壅盛型高血压的发生。

关键词：高血压素食中医证候特征临床流行病学调查

Investigation of Cationic Soapless P(St-co-DMAEMA) Latex and Its Electrostatic Adsorption of Laponite

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2016年第10期34卷 1240-1250页

作者： jie shen jing xu yang hu jian-wu sun ling-xiao li 阚成友 Department of Chemical Engineering Key Laboratory of Advanced Materials of Ministry of Education Tsinghua University Beijing 100084 China

Cationic poly（styrene-co-N,N-dimethylaminoethyl methacrylate）（P（St-co-DMAEMA）） latexes were prepared in the absence of surfactant by using 2,2＇-azobis （2-methylpropionamidine） dihydrochloride （AIBA） as the initiator. The effects of the AIBA concentration, HC1/DMAEMA molar ratio and DMAEMA amount on the emulsion polymerization and the latex properties were investigated. The particle morphology and size, the zeta potential and the amino distribution of the P（St- co-DMAEMA） latexes were characterized by transmission electron microscope （TEM）, dynamic light scattering （DLS） and conductometric titration, respectively. Results showed that the emulsion polymerization performed smoothly with high monomer conversion and narrow particle size distribution under the optimized conditions with AIBA concentration of1 wt%, HC1/DMAEMA molar ratio of 1.2 and DMAEMA content of 5 wt%. The diameter of the dried latex particles decreased and the density of amino groups on the particle surfaces increased with increasing the DMAEMA content. The zeta potential of the P（St-co-DMAEMA） latexes was pH-dependent and the zero point was around at pH 7.2. A facile method was developed to fabricate P（St-co-DMAEMA）/laponite hybrid nanoparticles via electrostatic adsorption, in which the loading capacity of laponite platelets reached 17.7 wt%, and the resultant hybrid nanoparticles showed good thermal stability.

关键词： Cationic latex Soapless emulsion polymerization DMAEMA Polymeric-laponite nanoparticles.

Cracking on a nickel-based superalloy fabricated by direct energy deposition

在线全文

学校读者我要写书评

暂无评论

China Foundry 2024年第4期21卷 311-318页

作者： Xue Zhang Ya-hang Mu Liang Ma jing-jing Liang Yi-zhou Zhou xiao-feng sun Jin-guo Li School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering Northeastern UniversityShenyang 110819China

Cracks have consistently been a significant challenge limiting the development of additive manufactured nickel-based *** is essential to investigate the location of cracks and their forming *** study extensively examines the impact of solidification process,microstructural evolution,and stress concentration on crack initiation during direct energy deposition(DED).The results emphasize that the crack formation is significantly related to large-angle grain boundaries,rapid cooling *** caused by large-angle grain boundaries and a fast-cooling rate predominantly appear near the edge of the deposited *** cracks are more likely to form near the top of the deposited sample,due to the presence ofγ/γ'*** secondary dendritic arm and the carbides in the interdendritic regions can obstruct liquid flow during the final stage of solidification,which results in the formation of solidification cracks and *** work paves the way to avoid cracks in nickel-based superalloys fabricated by DED,thereby enhancing the performance of superalloys.

关键词： location cracks direct energy deposition nickel-based superalloys

A powerful approach to alkoxy radical-mediated remote C(sp^3)–H bonds functionalization

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2018年第5期61卷 505-506页

作者： Cong xiao Wen-jing xiao Department of Chemistry Georgia State University CCNU-u Ottawa Joint Research Centre Key Laboratory of Pesticide & Chemical Biology Ministry of Education College of ChemistryCentral China Normal University

The activation of inert C（sp^3）–H bonds with control of reactivity and selectivity is one of the central topics in chemical sciences.

关键词： A powerful approach to alkoxy radical-mediated remote C H bonds functionalization

在线全文

学校读者我要写书评

暂无评论

长生牌鹿茸片急性毒性及增强免疫力实验研究

人参研究 2017年第3期29卷 35-37页

作者：高小风孙敬蒙王园薛传梅张晓晨张炜煜长春中医药大学吉林长春130117

目的研究长生牌鹿茸片的急性毒性反应及增强免疫力的作用。方法将小鼠禁食(不禁水)16 h后,经口灌胃给予受试物,灌胃后观察并记录14天内动物的体重、中毒症状及死亡情况,以此考察小鼠急性毒性反应;以厂家日推荐摄入量剂量的5、10和30倍... 详细信息

目的研究长生牌鹿茸片的急性毒性反应及增强免疫力的作用。方法将小鼠禁食(不禁水)16 h后,经口灌胃给予受试物,灌胃后观察并记录14天内动物的体重、中毒症状及死亡情况,以此考察小鼠急性毒性反应;以厂家日推荐摄入量剂量的5、10和30倍设置灌胃剂量,以蒸馏水作阴性对照组,各组小鼠连续灌胃30天后,以迟发型变态反应组指标以及小鼠腹腔巨噬细胞吞噬鸡红细胞组指标来考察增强免疫力的作用。结果急性毒性反应中各小鼠均未见明显症状,也无死亡;增强免疫力实验,中、高剂量组的受试物能增强小鼠的迟发型变态反应、对小鼠巨噬细胞吞噬鸡红细胞的能力无影响。结论长生牌鹿茸片无明显的急性毒性反应,属无毒级;具有增强免疫力作用。

关键词：长生牌鹿茸片急性毒性实验增强免疫力实验

Homologous CoS2 interface with directed electron transfer and strong chloridion repulsion for efficient seawater oxidation

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2025年

作者： Yuan Tian Jiang-Bo Chen Jie Ying Ge Tian Yu-Xuan xiao Yi Lu Si-Ming Wu Wei Geng Ling Shen xiao-Yu Yang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and School of Materials Science and Engineering and Shenzhen Research Institute & Laoshan Laboratory Wuhan University of Technology School of Chemical Engineering and Technology Sun Yat-Sen University National Energy Key Laboratory for New Hydrogen-Ammonia Energy Technologies Foshan Xianhu Laboratory

Seawater electrolysis is a highly promising method to produce high energy density hydrogen,especially in dry areas that have scarce freshwater ***,application of seawater electrolysis is confronted by two major problems associated with catalysts employed for the anodic oxygen evolution reaction （OER） including the competitive hypochlorite evolution reaction（HCER） and strong chloridion （Cl–） triggered *** studies aimed at overcoming these problems,a facile method has been developed to synthesize a homologous CoS2heterojunction as an OER *** to a difference in work functions at the interface and increased electron density,this material has directed electron transfer and strong chloridion repulsion properties,*** have shown that CoS2achieves low overpotentials of 289 and 322 mV at 10 mA cm-2current density in respective alkaline （1 M KOH） and alkaline simulated seawater ***,the outstanding stability of CoS2is reflected in a negligible decline in activity during promotion of the OER for 100 *** of density functional theory calculations reveal that the homologous CoS2heterojunction promotes directed electron transport for optimizing adsorption/desorption of reactive species and heightens the Cl-adsorption energy for strongly repulsing Cl-,phenomena that enhance OER performance in alkaline simulated seawater.

关键词：

Activation cross sections for reactions induced by 14 MeV neutrons on natural copper

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2018年第10期29卷 254-260页

作者： jing-Jie Ma Feng-Qun Zhou xiao-Jun sun xiao-Peng Zhang Shu-Qing Yuan School of Electrical and Mechanical Engineering Pingdingshan UniversityPingdingshan 467000China Henan Quality Polytechnic Pingdingshan 467000China

The cross sections for the^(63)Cu(n,a)^(60(m+g))Co,^(65)Cu(n,2 n)^(64)Cu, and ^(65)Cu(n,p)^(65)Ni reactions have been studied in the neutron energy range of 13.5–14.8 MeV using the activation technique. The neutron beams were produced via the^3 H(d,n)~4 He reaction. The neutron energies of different directions in the measurements were determined beforehand by the method of cross section ratios for the^(90)Zr(n,2 n)^(89 m+g)Zr and ^(93)Nb(n,2 n)^(92 m)Nb reactions. The results in the present work were discussed and compared with measurement results found in the literatures.

关键词： Copper Activation Neutron Cross section Nuclear reaction