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城市组群及相关概念的界定与辨析

现代城市研究 2008年第3期23卷 6-13页

作者：王士君吴嫦娥东北师范大学城市与环境科学学院教授东北师范大学城市规划与设计专业硕士研究生

鉴于目前城市规划和城市地理界在社会经济实践领域承担的关于城市群和都市区的应用研究任务愈来愈多,而相关的理论尚不完善、认识尚不统一的实际情况,论文对城市组群、城市群、城镇密集区、都市区、都市连绵区、大都市带、城市带等相关... 详细信息

鉴于目前城市规划和城市地理界在社会经济实践领域承担的关于城市群和都市区的应用研究任务愈来愈多,而相关的理论尚不完善、认识尚不统一的实际情况,论文对城市组群、城市群、城镇密集区、都市区、都市连绵区、大都市带、城市带等相关概念及其内涵和外延,进行了深入的辨析和进一步的界定,尤其强调了相关概念的关联和区别。论文认为,城市群是城市群体发育到高级阶段的一种表现形式,而城市组群是城市群形成演化的中间形态,同时也是城市群地域结构的构成单元;"城市单体→城市组群→城市群→都市连绵区"是城市空间相互作用的有序发展过程。

关键词：城市组群城市群都市连绵区城市规划城市地理

丙型肝炎或丙型肝炎合并人类免疫缺陷病毒感染患者的病毒动力学

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世界核心医学期刊文摘（胃肠病学分册） 2005年第8期1卷 22-23页

作者： Sherman K.e Shire N.J Rouster S.D 樊菁 Department of Me dicine Division of Digestive Diseases Univ. of Cincinnati Coll. of Med. CincinnatiOH 45267 -0595 United States.Dr

Background &Aims: Kinetic modeling of hepatitis C virus(HCV) response to inte rferon (IFN)-based therapy provides insights into factors associated with treat ment ***/human immunodeficiency virus (HIV)-co-infected patients show lower response rates vs. HCV-monoinfected patients. Reasons for this remain un clear. This study evaluated kinetic parameters and treatment responses in co-in fected vs monoinfected patients. Methods: Co-infected patients were randomized within a US multicenter trial (ACTG 5071) to receive pegylated-interferon (PeG -IFN) alfa-2a +ribavirin *** alfa-2a +ribavirin. Monoinfected controls w ere matched prospectively for treatment, genotype, age, sex, race, and histology .Quantitative HCV-RNA testing was performed at hours 0,6, 12, 24, 48, and 72; d ays 7, 10, 14, 28, and 56; and weeks 12,24, 48, and 72. Results: Twelve HCV/HIV -co-infected and 15 HCV-monoinfected patients underwent viral kinetic samplin *** HIV-positive patients the mean CD4+count was 325 cells/mm3. Seventy-f ive percent of patients were genotype *** HCV-RNA level was undetectable at 7 2 weeks in 25%and 40%of co-infected and monoinfected patients, respectively.P hase 1/2 declines, free virus clearance rate, and infected hepatocyte death rate were not affected by co-infection status but differed by treatment. efficiency (e) ≥90%at 60 hours was associated with viral clearance (P =. 02). Modeling w ith pooled parameters suggests baseline viral load is a key factor in time to re sponse in this cohort. Predicted clearance time increased by 28%in co-infected patients. Conclusions: Co-infection status did not affect key kinetic paramete rs. Among kinetic parameters, efficiency was associated significantly with viral clearance. Co-infected patients may require longer treatment duration thanmono infected patients given their generally higher baseline viral loads.

关键词：丙型肝炎治疗应答感染状态单一感染合并感染者肝细胞死亡应答率清除率多中心试验研究评价

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对结肠直肠癌高危患者的筛查行为

世界核心医学期刊文摘（胃肠病学分册） 2005年第8期1卷 20-21页

作者： Bleiker e.M.A Menko F.H Taal B.G 樊菁 Div. Psychosoci al Res. epidemiol. Netherlands Cancer Institute Plesmanlaan 121 1066 CX Amste rdamNetherlands.Dr

Background &Aims: Periodic colonoscopy is an effective means of reducing the incidence and mortality of colorectal cancer in individuals with a family histor y of the disease. The aims of this study were to determine the degree of complia nce and to identify the factors related significantly to noncompliance with peri odic screening in this high-risk population. Methods:A total of 178 individuals who had undergone genetic couns eling for colorectal cancer between 1986 and 1998 and who had been advised to un dergo periodic screening because of familial colorectal cancer (FCRC) or heredit ary nonpolyposis colorectal cancer (HNPCC) were invited to complete a self-repo rt questionnaire on psychosocial issues and screening *** dat a were derived from medical records and via self-report. Results: A total of 14 9 individuals (84%) participated in the study. Noncompliance with screening adv icewas rare (in 3%of cases), but significant delays (more than 1 year) in under going screening were observed in approximately 25%of the cases. The number of p erceived barriers to screening (eg, discomfort, embarrassment) was the only vari able related significantly to noncompliance/screening delay (odds ratio, 1.2;95 %confidence interval, 1.1-1.3). Use of sedatives during the procedure and rece ipt of a reminder letter seemed to facilitate better compliance. Conclusions: Al though few high-risk individualsabstain from screening entirely, approximately one in 4 deviates significantly from the recommended frequency of screening. Inc reased compliance may be achieved by reducing the discomfort and embarrassment a ssociated with the procedure and by the use of reminder letters.

关键词：结肠直肠癌依从性结肠镜检认知障碍高危人群族性社会心理问题问卷表本项自我报告

“模拟联合国”活动和当今大学生综合素质与能力培养的关系——以解放军信息工程大学“模拟联合国”活动为例

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新疆教育学院学报 2018年第1期34卷 32-35页

作者：周时娥彭强解放军信息工程大学基础部大学英语教研室河南郑州450001

"模拟联合国"活动旨在培养国际复合型人才。文章首先介绍了"模拟联合国"活动以及"模拟联合国"活动在解放军信息工程大学的开展情况,着重论述了"模拟联合国"活动对大学生综合素质和能力的培养,并对"模拟联合国"活动进行了思考和探索,同... 详细信息

"模拟联合国"活动旨在培养国际复合型人才。文章首先介绍了"模拟联合国"活动以及"模拟联合国"活动在解放军信息工程大学的开展情况,着重论述了"模拟联合国"活动对大学生综合素质和能力的培养,并对"模拟联合国"活动进行了思考和探索,同时提出了一些建议。

关键词： “模拟联合国” 综合素质和能力复合型国际人才建议

胃内折叠缝合的术式:一项环形折叠式与螺旋折叠式对比

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世界核心医学期刊文摘（胃肠病学分册） 2006年第4期2卷 47-48页

作者： Davis R.e Iqbal A Gerhardt J.D. C.J. Filipi 张欣 Department of Surgery Creighton University Medical Center 601 N. 30th Street Omaha NE 68131 Un ited StatesDr.

Goals: To determine the long-term efficacy of endoluminal gastroplication (eLGP) and the most effective plication configuration. Background: endoluminal gast roplication is an intriguing therapy for gastroesophageal reflux disease. We con ducted a retrospective review of a prospective experience of patient cohorts com paring outcomes of the circumferential and helical plication patterns. Study: Tw enty patients underwent eLGP, with 9 receiving the circumferential (Group 1) and 11 the helical pattern (Group 2). Manometry, endoscopy, and 24-hour pH monitor ing were performed at baseline and at 6 months. Symptom scores and medication us age were assessed at baseline, 1, 3, 6, 12, and 18months. Results: Both groups d id not differ significantly from each other with respect to symptom improvement, medication usage, or other variables measured. At 6 months, symptom scores, his tamine-2 receptor antagonist (H2RA), proton pump inhibitor usage,and hernia siz e decreased significantly. No other parameter showed a significant change. At th e 18-month follow-up, symptom scores and H2RA usage decreased significantly. C onclusion: eLGP improves heartburn and regurgitation scores at 18 months. Our st udy suggests that there is no benefit to additional placations when using the he lical pattern.

关键词：折叠缝合折叠术缝合术预后结果胃食管反流药物用量压力测定治疗作用胃灼热药物治疗

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田间便携式短喉槽水力特性试验研究

人民黄河 2017年第8期39卷 143-148页

作者：肖苡辀王文娥胡笑涛西北农林科技大学水利与建筑工程学院陕西杨凌712100

结合临界流原理,提出适用于灌区田间进水口水量计量的新型量水设备——田间便携式短喉槽,以满足量水槽结构简单、水头损失小、量水精度较高、流量计算公式简明的要求。田间便携式短喉槽是一种喉道宽度为76 mm、槽底为平底的短喉道量水... 详细信息

结合临界流原理,提出适用于灌区田间进水口水量计量的新型量水设备——田间便携式短喉槽,以满足量水槽结构简单、水头损失小、量水精度较高、流量计算公式简明的要求。田间便携式短喉槽是一种喉道宽度为76 mm、槽底为平底的短喉道量水槽。在自由出流、淹没出流两种工况下对不同流量下的水力特性进行试验研究,结果表明:该量水槽过流顺畅,量测流量最大可达40 L/s,能够满足灌区末级渠道的量水要求;断面流速分布为中间流速大、两侧流速较小,且自由出流工况下的流速略大于淹没出流工况下的流速;水头损失较长喉槽的小;根据对弗劳德数的分析得到临界水深断面位于喉道后半段;通过回归分析得到田间便携式短喉槽的上游水深—流量计算公式,其最大测流误差为9.16%,满足灌区田间量水精度要求。

关键词：田间便携式短喉槽断面流速分布水头损失弗劳德数临界水深断面灌区

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Preface

Science China Mathematics 2013年第12期56卷 I0003-I0003页

作者： Zhiming Chen Weinan e Chi-Wang Shu Academy of Mathematics and Systems Science Chinese Academy of Sciences Princeton university Peking university Brown university

This special issue is dedicated to Professor Shi Zhong-Ci on the occasion of his 80th birthday. Professor Shi was born on December 5, 1933, in Ningbo, Zhejiang Province. He completed the un- dergraduate study in Fudan university in 1955 and had studied computational mathematics in Steklov Institute of Mathematics in Moscow in 1956-1960. Professor Shi has made profound and significant con- tributions in many areas of scientific computing including finite element methods, domain decomposition methods, and multigrid methods. His achievements in the development of nonconforming finite element methods have been particularly recognized by the community.

关键词：计算数学区域分解方法有限元方法复旦大学有限元法多重网格宁波市浙江省

温度和内水压力对小浪底排沙洞衬砌混凝土应变的影响

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水利与建筑工程学报 2013年第6期11卷 20-25,77页

作者：随春娥亢景付天津大学建筑工程学院天津300072 滨海土木工程结构与安全教育部重点实验室(天津大学) 天津300072

小浪底排沙洞是我国首例采用无粘结预应力混凝土衬砌的水工隧洞,根据运行期间混凝土应变计所获得的大量实测数据,对排沙洞衬砌混凝土应变在温度和内水压力影响下的变化进行了分析。结果表明,对于同一衬砌段,端部断面内侧混凝土的温度影... 详细信息

小浪底排沙洞是我国首例采用无粘结预应力混凝土衬砌的水工隧洞,根据运行期间混凝土应变计所获得的大量实测数据,对排沙洞衬砌混凝土应变在温度和内水压力影响下的变化进行了分析。结果表明,对于同一衬砌段,端部断面内侧混凝土的温度影响系数αT大于端部断面厚度中部;3#排沙洞ST3-A段端部断面αT比中部断面小,而ST3-B段正好相反;同一断面位于时钟6∶00、12∶00位置的αT较大,平均值约为-6.83με/℃;对于同一时钟位置,衬砌厚度内侧水头影响系数αW大于衬砌厚度中部;3#排沙洞衬砌的αW小于2#排沙洞。分析结果表明,在温度和水头作用下,衬砌混凝土应变计所在位置的混凝土应力均为压应力,没有产生引起裂缝的拉应力,小浪底排沙洞可正常使用。

关键词：衬砌混凝土应变变化温度影响系数水头影响系数

不锈钢衬底的抛光处理对碳纳米管薄膜场发射性能的影响(英文)

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人工晶体学报 2005年第5期34卷 954-959页

作者：樊志琴朱庆芳杨仕娥姚宁鲁占灵张兵临河南工业大学数理系郑州450052 郑州大学材料物理教育部重点实验室郑州450052

在抛光的和未抛光的不锈钢衬底上,利用微波等离子体化学气相沉积(MPCVD)方法从甲烷和氢气的混合气体中沉积碳纳米管薄膜,并对其场发射性能进行了研究。实验发现,不锈钢衬底的机械抛光能降低碳纳米管膜的开启场强,增大它的发射电流密度... 详细信息

在抛光的和未抛光的不锈钢衬底上,利用微波等离子体化学气相沉积(MPCVD)方法从甲烷和氢气的混合气体中沉积碳纳米管薄膜,并对其场发射性能进行了研究。实验发现,不锈钢衬底的机械抛光能降低碳纳米管膜的开启场强,增大它的发射电流密度。在同一场强7.5 V/μm下,衬底未抛光样品的电流密度为2.9 mA/cm2,而衬底抛光样品的电流密度达到5.5 mA/cm2。低开启场强和大发射电流密度意味着β增大,说明机械抛光能使碳纳米管膜的β增大。

关键词：碳纳米管膜场发射 MPCVD 拉曼光谱