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EN串列静电加速器的维护运行

原子能科学技术 2008年第B9期42卷 242-245页

作者：任晓堂华景山蒋正元巩玲华付东坡北京大学重离子物理研究所和核物理与核技术国家重点实验室北京100871

介绍了北京大学EN串列静电加速器近两年来的维护运行情况。包括加速器工作在较高端电压时的稳定运行条件,其中分压电阻阻值的稳定性及绝缘可靠性和绝缘气体的干燥程度是影响加速器在较高的端电压下稳定运行的非常重要的两个因素;气体剥... 详细信息

介绍了北京大学EN串列静电加速器近两年来的维护运行情况。包括加速器工作在较高端电压时的稳定运行条件,其中分压电阻阻值的稳定性及绝缘可靠性和绝缘气体的干燥程度是影响加速器在较高的端电压下稳定运行的非常重要的两个因素;气体剥离压缩循环系统对束流电荷态分布及束流传输的影响,它的使用使得中、高电荷态的离子束成倍增加,提高了束流的传输效率。另外,对小流强离子束进行积分测量的实验研究表明,PIN半导体探测器可用于流强小于0.01 nA的离子束的测量。

关键词：串列静电加速器气体剥离压缩循环系统 PIN探测器

对加快我国核电发展的思考——基于我国能源、电力结构布局状况分析

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福建行政学院学报 2008年第4期 68-73,100页

作者：任德曦胡泊南华大学经济管理学院湖南衡阳421001

我国能源、电力结构布局呈现不合理现状,核能发电在总发电量中的比重过小。世界核电的新发展趋势启迪我们必须借鉴他国经验加快发展核电。欲改善我国能源、电力结构布局不合理状况,一是能源、电力布局要从资源布局型向资源主导与需求使... 详细信息

我国能源、电力结构布局呈现不合理现状,核能发电在总发电量中的比重过小。世界核电的新发展趋势启迪我们必须借鉴他国经验加快发展核电。欲改善我国能源、电力结构布局不合理状况,一是能源、电力布局要从资源布局型向资源主导与需求使用相结合的布局方向演进;二是建立各地区电力基本负荷体系,建立地区特色的电力结构体系;三是跟上世界核电新发展趋势,加快核电发展。

关键词：能源电力核电发展建设

P2Y1R is involved in visceral hypersensitivity in rats with experimental irritable bowel syndrome

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World Journal of Gastroenterology 2017年第34期23卷 6339-6349页

作者： Jie Wu Yan Cheng Rong Zhang Dong Liu Yu-mei Luo Kun-Lun Chen Song ren Jun Zhang Department of Gastroenterology The Second Affiliated Hospital of School of MedicineXi’an Jiaotong University Department of Gastroenterology Shaanxi Provincial People’s Hospital Department of Gastroenterology The First Affiliated Hospital of School of MedicineXi’an Jiaotong University Fourth Cadre ward The Second Affiliated Hospital of School of MedicineXi’an Jiaotong University

AIM To evaluate the role of P2Y1 R in visceral hypersensitivity in rats with experimental irritable bowel *** A rat model of irritable bowel syndrome was generated by intra-colonic administration of acetic acid(AA) and assessed by histology and myeloperoxidase(m po) activity assay. Then P2Y1 R expression in the colonic tissue was detected by Western blot. In order to explore the regulatory role of P2Y1 R in visceral hypersensitivity, an agonist(m RS2365) and an antagonist(m RS2179) of P2Y1 R were intra-colonically administered and effects were tested through a colorectal distension test. The abdominal withdrawal reflex and abdominal electromyography were tested during the course. RESULTS model assessment tests showed an obvious inflammatoryreaction that appeared on the 2^(nd) d after the AA injection, and the inflammatory reaction gradually recovered and almost disappeared on the 7^(th) d. The model finished on day 8 and showed a clear feature of IBS that had no organic lesion. The average expression of P2Y1 R was significantly higher in the AA group than in the na?ve group(0.319 ± 0.02 vs 0.094 ± 0.016, P rences between the m RS2179 group(1.88 ± 1.45) and either the m RS2365 group(3.96 ± 0.19) or the combined treatment(m RS2179 and m RS2365) group(3.28 ± 0.11) were significant(P potential therapeutic value in treating abdominal pain in IBS.

关键词： Irritable bowel syndrome P2Y1 receptor Regulation Therapy visceral hypersensitivity

Integrated Ni2P nanosheet arrays on three-dimensional Ni foam for highly efficient water reduction and oxidation

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Journal of Energy Chemistry 2017年第6期26卷 1196-1202页

作者： Jintao ren Zhongpan Hu Chong Chen Yuping Liu Zhongyong Yuan National Institute for Advanced Materials School of Materials Science and EngineeringNankai UniversityTianjin 300353China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Collaborative Innovation Center of Chemical Science and Engineering(Tianjin)Nankai UniversityTianjin 300071China

The large-scale synthesis of efficient nonprecious bifunctional electrocatalysts for overall water splitting is a great challenge for future renewable energy conversion systems. Herein, Ni2P nanosheet arrays directly grown on three-dimensional(3 D) Ni foam(Ni P/NF) are fabricated by hydrothermal treatment of metallic Ni foam with H2O2solution and subsequent phosphidation with NaH2po2. The Ni P/NF as electrocatalyst exhibits superior activities for both hydrogen evolution reaction(HER) and oxygen evolution reaction(OER). Most importantly, employing both as the cathode and anode for an alkaline water electrolyzer, Ni P/NF only requires a cell voltage of 1.63 V to reach a current density of 10 mV cm-2, together with stronger durability. Preliminary catalytic information suggests that the tailored 3 D superstructure and integrated electrode configurations afford improved active sties and enhanced electron/mass transfer,responding for the outstanding activity and stability.

关键词： Nickel phosphide Electrocatalyst Hydrogen evolution Oxygen evolution Water splitting

^11C-choline PET/MRI for Characterization of Primary High-Risk Prostate Cancer： Correlations between positron Emission Tomography Imaging Parameters and Clinical Features

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Journal of Pharmacy and Pharmacology 2017年第7期5卷 391-400页

作者： Jing-ren Tseng See-Tong Pang Kang-Hsing Fan Ji-Hong Hong po-Hung Lin Lan-Yan Yang Hsiu-Ya Chang Hou-Ting Yang Kwai-Fong Ng Li-Jen Wang Tzu-Chen Yen Department of Nuclear Medicine and Center for Advanced Molecular Imaging and Translation Chang Gung Memorial Hospital at Linkou Taoyuan 333 Taiwan Division of Urology Department of Surgery Chang Gung Memorial Hospital at Linkou Taoyuan 333 Taiwan Department of Radiation Oncology Chang Gung Memorial Hospital at Linkou Taoyuan 333 Taiwan Institute for Radiological Research Chang Gung Memorial Hospital/Chang Gung University Taoyuan 333 Taiwan Graduate Institute of Clinical Medieal Science College of Medicine Chang Gung University Taoyuan 333 Taiwan Biostatistics Unit Clinical Trial Center Chang Gung Memorial Hospital Taoyuan 333 Taiwan Department of Pathology Chang Gung Memorial Hospital at Linkou Taoyuan 333 Taiwan Department of Medical Imaging and Intervention Chang Gung Memorial Hospital at Linkou Taoyuan 333 Taiwan Department of Medical Imaging and Radiological Science College of Medicine Chang Gung University Taoyuan 333 Taiwan

Purpose： The aim of this study was to determine whether PET （positron emission tomography） imaging parameters from simultaneous ^11C-choline PET/MRI （magnetic resonance imaging） could be used to characterize primary prostate cancer. Methods： Forty-six patients with biopsy-proven high-risk prostate cancer （clinical T stage ≥ cT2c, a Gleason score 〉 8, or PSA （prostate-specific antigen） level 〉 20 ng/mL） were prospectively enrolled. A SUV （standardized uptake value） histogram analysis including maximum SUV, mean SUV, SUV variance, SUV entropy, MTV （metabolic tumor volume）, and UVP （uptake volume product） was applied for the calculation of PET imaging parameters. Correlations between the PSA level and Gleason score were then evaluated. Results： Maximum SUV, mean SUV, MTV, UVP, and SUV variance were significantly correlated with PSA level, whereas SUV variance was the only parameter negatively correlated with the Gleason score. Multivariate logistic regression analysis demonstrated that MTV and PSA level at diagnosis were independent predictors of positive distant metastasis status. Conclusions： PET imaging parameters from simultaneous ^11C-choline PET/MRI were correlated with PSA level. However, ^11C-choline metabolic tumor heterogeneity was not associated with biospecimen-derived Gleason scores in prostate cancer. To apply PET texture quantification analysis to prostate cancer, a more specific PET radiotracer is required.

关键词： ^11C-choline PET/MRI primary high-risk prostate cancer staging.

Synthesis, Crystal Structure of Protic Pyrazolium Ionic Liquid and Its Catalytic Properties for CO2 Cycloaddition

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Chinese Journal of Structural Chemistry 2020年第4期39卷 801-808页

作者： ren Yu-XuanWANG Shuai-Tao ZHANG Chen-Xu WANG Huan-Ming LI Gui-Hui Minsheng College Henan UniversityKaifeng 475004China The Key Laboratory for Special Functional Materials Henan UniversityKaifeng 475004China

Two protic pyrazolium ionic liquids(ILs)are synthesized and characterized by mass spectra(MS),1H NMR,13C NMR,and single-crystal X-ray ***,their catalytic activity for the cycloaddition of po and CO2 is *** protic pyrazolium ILs are the orthorhombic and triclinic systems of space groups Cmca and C2/c for HTMPzBr and HDMPzBr,*** could catalyze the cycloaddition reaction of carbon dioxide(CO2)with epoxides(po)to produce cyclic carbonate(PC)without any solvent and co-catalyst and show strong catalytic activity when the reaction temperature is over 110℃.

关键词： protic pyrazolium ionic liquids carbon dioxide epoxide cyclic carbonate crystal structure

Extraction of Tetracycline via Ionic Liquid Two-phase System

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Chemical Research in Chinese Universities 2009年第6期25卷 832-835页

作者： MA Chun-hong WANG Liang YAN Yong-sheng CHE Guang-bo YIN Yan-su WANG ren-zhang LI Dong-ying Institute of Environment Jiangsu University Zhenjiang 212013 P. R. China Institute of Chemistry Jilin Normal University Siping 136000 P. R. China Department of Chemistry and Biological Engineering Sanming University Sanming 365004 P. R. China

A new method to extract and separate tetracycline（TC） in a new aqueous tyro-phase system（ATPS） consisting of hydrophilic [Bmim]BF4 and NaH2po4 was investigated. The effects of the amount of salt, ionic liquid as well as tetracycline on extraction efficiency were studied systematically. The results show that ionic liquid-ATPS exhibited the highest extraction efficiency higher than 90%. When the concentration of NaH2po4 was 33.3%--38.5% （mass fraction）, the amounts of ionic liquid and TC were 1.0--2.0 mL and 1.8 mL, respectively, and ionic liquid could be re-used.

关键词： Ionic liquid Aqueous two-phase Tetracycline Extraction separation

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江苏南部溪流司氏䱀生长特性的初步研究

水生生物学报 2021年第1期45卷 89-96页

作者：任文强匡箴凡迎春任泷丁隆强徐东坡上海海洋大学水产科学国家级实验教学示范中心上海201306 中国水产科学研究院淡水渔业研究中心农业农村部长江下游渔业资源环境科学观测实验站无锡214081

2017年1月至2019年4月于江苏南部溪流水域采集司氏䱀(Liobagrus styani)样本221尾,利用脊椎骨分析法对司氏䱀的年龄与生长进行了初步研究。结果表明,司氏䱀渔获物年龄组成为1—5龄,以2—3龄个体为主,占总样本量的71.85%。体长分布范围为32... 详细信息

2017年1月至2019年4月于江苏南部溪流水域采集司氏䱀(Liobagrus styani)样本221尾,利用脊椎骨分析法对司氏䱀的年龄与生长进行了初步研究。结果表明,司氏䱀渔获物年龄组成为1—5龄,以2—3龄个体为主,占总样本量的71.85%。体长分布范围为32.09—104.02 mm,优势组60—90 mm。体长与脊椎骨外径关系为L=22.134R+34.551,体长与体重关系为W=3×10–5L2.836,von Bertalanffy生长方程为:Lt=108.45[1–e–0.1330(t+3.8058)],Wt=17.74[1–e–0.1330(t+3.8058)]2.836。生长拐点年龄为4.04龄,拐点年龄时对应体长、体重分别为Li=70.22 mm和Wi=5.17 g。研究首次在江苏南部水域采集到司氏䱀,并首次报道了年龄结构和生长特征,为其资源保护提供了基础资料。

关键词：江苏南部溪流司氏䱀年龄结构生长特性

^125I粒子植入治疗非小细胞肺癌近期疗效评估

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介入放射学杂志 2014年第1期23卷 65-68页

作者：李任飞王月东闫龑杨坡沙菲李威任海涛哈尔滨医科大学附属第四医院介入血管科哈尔滨150001

目的探讨125I粒子植入治疗非小细胞肺癌(NSCLC)介入综合治疗的近期疗效、可行性、安全性。方法 2010年6月—2012年12月,治疗符合标准肺癌患者为56例,将其分成治疗组A组(24例)和对照组B组(32例)。A组给以支气管动脉化疗药物灌注术,术后给... 详细信息

目的探讨125I粒子植入治疗非小细胞肺癌(NSCLC)介入综合治疗的近期疗效、可行性、安全性。方法 2010年6月—2012年12月,治疗符合标准肺癌患者为56例,将其分成治疗组A组(24例)和对照组B组(32例)。A组给以支气管动脉化疗药物灌注术,术后给以125I粒子植入术。B组单纯给以支气管动脉化疗药物灌注术。结果 A组中位生存期(22.8±1.9)个月,B组中位生存期(14.2±1.3)个月。A组显著长于B组(P=0.006)。结论125I粒子植入联合动脉化疗治疗中晚期NSCLC与单纯动脉化疗相比能够明显的提高患者的生存质量和延长患者的生存期,是治疗中晚期NSCLC的一种有效的方法,值得临床广泛应用。

关键词：非小细胞肺癌支气管动脉化疗药物灌注 125I粒子植入计算机治疗计划系统