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苏州市有线电视综合业务网的建设及发展

广播与电视技术 2001年第11期28卷 72-75页

作者：倪飞夏娟江苏苏州市广电局技术事业处

苏州有线电视网络建设从1991年开始,通过10年的努力,如今全市网内己拥有有线电视用户近100万户,传送30余套电视节目,完成市到县(市)到乡镇的ATM+IP数据交换网建设,为广大社会集团用户提供高质量高可靠、宽带快速数据传输服务,既拓宽了... 详细信息

苏州有线电视网络建设从1991年开始,通过10年的努力,如今全市网内己拥有有线电视用户近100万户,传送30余套电视节目,完成市到县(市)到乡镇的ATM+IP数据交换网建设,为广大社会集团用户提供高质量高可靠、宽带快速数据传输服务,既拓宽了有线电视网络的服务领域,又取得了一定的经济效益.本文简要介绍苏州市有线电视综合业务网的建设情况及其发展.

关键词：有线电视综合业务网光缆网

Identification and Characterization of Bacillus cereus SW7-1 in Bombyx mori(Lepidoptera: Bombycidae)

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Identification and Characterization of Bacillus cereus SW7-1...

扩张型心肌病患者左心室能量损耗及室壁剪应力的血流向量成像评价

第十二届家（柞）蚕遗传育种暨良种繁育学术研讨会

作者： Guan-Nan Li Xue-juan xia Huan-Huan Zhao Parfait Sendegeya Yong Zhu College of Biotechnology Southwest University

The bacterial diseases of silkworms cause significant reductions in sericulture and result in huge economic loss. This study aimed to identify and characterize a pathogen from diseased silkworm. SW7-1, a pathogenic bacterial strain, was isolated from the dis-eased silkworm. The strain was identified on the basis of its bacteriological properties and 16 S rRNA gene sequence. The colony was round, slightly convex, opaque, dry, and milky on a nutrient agar medium, the colony also exhibited jagged edges. SW7-1 was Gram-positive, without parasporal crystal, and 0.8–1.2 by 2.6–3.4 mm in length, resembling long rods with rounded ends. The strain was posi-tive to most of the physiological biochemical tests used in this study. The strain could utilize glucose, sucrose, and maltose. The results of its 16 S rRNA gene sequence analysis revealed that SW7-1 shared the highest sequence identity(>99%) with Bacillus cereus strain 14. The bacterial strain was highly susceptible to gentamycin, streptomycin, erythromycin, norfloxacin, and ofloxacin and moderately susceptible to tetracycline and rifampicin. It exhibited resistance to other antibiotics. SW7-1 had hemolytic activity and could produce extracellular casease, lipase, and amylase. SW7-1 could reproduce septicemia-like symptoms with high mortality rate when re-fed to healthy silkworm..The median lethal concentration(LC) was 5.45 104 cfu/ml. Thus, SW7-1 was identified as B. cereus, which is a pathogen for silkworm and human infections are possible.

关键词： silkworm(Bombyx mori) identification characterization Bacillus cereus pathogen

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中华医学超声杂志（电子版） 2021年第10期18卷 954-959页

作者：程冠夏娟马小静武汉科技大学附属武汉亚洲心脏病医院超声中心 430022

目的应用血流向量成像(VFM)技术定量评估扩张型心肌病(DCM)患者的左心功能异常。方法选取2019年1月至2019年4月于武汉亚洲心脏病医院确诊DCM的患者29例为DCM组,同期匹配健康志愿者32例为对照组。VFM模式下获取两组心尖四腔心、三腔心切... 详细信息

目的应用血流向量成像(VFM)技术定量评估扩张型心肌病(DCM)患者的左心功能异常。方法选取2019年1月至2019年4月于武汉亚洲心脏病医院确诊DCM的患者29例为DCM组,同期匹配健康志愿者32例为对照组。VFM模式下获取两组心尖四腔心、三腔心切面二维彩色多普勒血流动态图,脱机分析对比不同切面等容收缩期(P0)、快速射血期(P1)、等容舒张期(P2)、快速充盈期(P3)、心房收缩期(P4)能量损耗(EL)及各节段室壁剪应力(WSS)平均值的差异,评估DCM患者左心室血流动力学的改变。结果与对照组相比,DCM组在P0、P1及P3期EL均减低[分别为(2.24±1.33)J/(s·m^(3))vs(1.39±0.49)J/(s·m^(3))、(6.14±3.58)J/(s·m^(3))vs(4.17±2.12)J/(s·m^(3))、(10.38±6.67)J/(s·m^(3))vs(4.92±2.73)J/(s·m^(3)),均P中间段>心尖段,而DCM组P0、P2和P4期基底段与中间段WSS差异无统计学意义(均P>0.05)。对照组WSS同一节段P0→P1→P2→P3→P4期表现为升高-减低-升高-减低改变(均P0.05)。结论VFM技术中的EL及WSS作为新的血流动力学量化参数,可评估DCM患者左心室功能异常。

关键词：血流向量成像心肌病,扩张型能量损耗室壁剪应力

Factors influencing recovery of left ventricular structure in patients with chronic heart failure

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Chinese Medical Journal 2011年第18期124卷 2868-2873页

作者： DUAN Hong-yan WU Xue-si HAN Zhi-hong GUO Yong-fang FANG Shan-juan ZHANG xiao-xia WANG Chun-mei Department of Cardiology Beijing Anzhen Hospital Capital Medical University Beijing 100029 China

Background Angiotensin converting enzyme （ACE） inhibitors and G-blockers （13B） have beneficial effects on left ventricular （LV） remodeling, alleviate symptoms and reduce morbidity and mortality in patients with chronic heart failure （CHF）. However the correlation between the d osages of ACE inhibitors, βB, and recovery of LV structure remains controversial. Clinical factors associated with recovery of normal ventricular structure in CHF patients receiving medical therapy are poorly defined. Here we aimed to identify variables associated with recovery of normal or near-normal structure in patients with CHF. Methods We recruited 231 consecutive CHF outpatients, left ventricular ejection fraction （LVEF）〈40% and left ventricular end diastolic diameter （LVEDD）〉55/50 mm （male/female）, who were receiving optimal pharmacotherapy between January 2001 and June 2009, and followed them until December 31,2009. They were divided into three groups according to LVEDD and whether they were still alive at final follow-up： group A, LVEDD 〈60/55 mm （male/female）; group B, LVEDD 〉60/55 mm （male/female）; and group C, those who died before final follow-up. Apart from group C, univariate analysis was performed followed by Logistic multivariate analysis to determine the predictors of recovery of LV structure. Results A total of 217 patients completed follow-up, and median follow-up time was 35 months （range 6-108）. Twenty-five patients died during that period; the all-cause mortality rate was 11.5%. Group A showed clinical characteristics as follows： the shortest duration of disease and shortest QRS width, the lowest N-terminal brain natriuretic peptide （NT-proBNP） at baseline, the highest dose of I3B usage, the highest systolic blood pressure （SBP）, diastolic blood pressure （DBP） and the lowest New York Heart Association （NYHA） classification, serum creatinine, uric acid, total bilirubin and NT-proBNP after treatment. Logistic multivariate analysis was performed according to recovery or

关键词： heart failure drug therapy prognosis prognostic factors

Impacts of conservative endodontic cavities on root canal therapy compare to traditional endodontic cavities in premolars

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Impacts of conservative endodontic cavities on root canal th...

数量代表与实质代表:理解女性政治地位的一个理论视角

2019年中华口腔医学会老年口腔医学专业委员会第十四次全国老年口腔医学学术年会

作者： juan xia Weidong Wang Zhengmao Li Bingpeng Lin Qianzhou Jiang Qian Zhang Xuechao Yang

Objective:Background:This study aims to compare the percentage of dentin removed,instrumentation efficacy,root canal filling and load at fracture between contracted endodontic cavities and traditional endodontic cavities in ***:Forty extracted intact human first premolars were imaged with micro-CT and randomly assigned to CEC or TEC *** CECs were prepared with the aid of 3 D-printed guide template,canals were prepared with a 0.04 taper M-Two rotary instrument and cavities were restored with *** specimens were loaded to fracture in an Instron Universal Testing Machine after a fatigue *** data were analyzed by the independent samples T test and MannWhitney U test,appropriate post hoc ***:In the premolars tested in vitro,CECs conserved coronal dentin in premolars with two dental roots but no impact on the instrument efficacy,the root canal filling or the biomechanical responses compared with ***:The results of this study did not suggest that CEC could improve the fracture resistance of the endodontically treated *** instrumentation efficacy and the percentage of filling material did not significantly differ between CECs and TECs in the premolars.

关键词： 3D-printed template contracted endodontic cavities instrumentation efficacy root canal filling fracture resistance

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妇女研究论丛 2019年第5期 57-70页

作者：郭夏娟魏芃浙江大学公共管理学院

近年来,中国女性政治地位在性别平等评估中出现两种看似矛盾的结果:在国内评价体系中持续上升,在全球评价体系中却呈下降态势。如何理解这种不尽一致的结果?以女性代表性理论为依据进行分析发现,从决策机构中的女性数量看,尽管中国的政... 详细信息

近年来,中国女性政治地位在性别平等评估中出现两种看似矛盾的结果:在国内评价体系中持续上升,在全球评价体系中却呈下降态势。如何理解这种不尽一致的结果?以女性代表性理论为依据进行分析发现,从决策机构中的女性数量看,尽管中国的政策法规体系为女性决策参与提供了制度保障,但与国际水平相比,增长速度仍不尽如人意。如果从女性的实质性代表考察,并非只有"女性代表"才能为提升女性政治地位采取行动。实际上,自中华人民共和国成立以来,已经发展出包括政府机构、社会组织、两性公民个体在内的多元女性代表主体,形成了包括政策产出、统计监测与需求回应等有利于女性发展的多元行动机制,无论是政策制定理念还是政策制定与评估方式,均朝着服务女性需求、追求社会性别公平的方向持续转变。因此,评价女性政治地位需要一种更加开放与包容的视角,即数量代表与实质代表的"二元维度",除了依据国际上普遍采纳的数量代表指标之外,还应结合实质代表要素进行综合思考,二者缺一不可。

关键词：数量代表实质代表女性政治地位性别配额制

Respiratory syncytial virus infection in immunocompetent and immunocompromised murine

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Journal of Microbiology and Immunology 2006年第1期4卷 49-57页

作者： juan ZHOU Yu xia CUI XI QIANG YANG ZHOU FU LI PING JIANG LI JIA WANG Immune lab Children＇s Hospital Affiliated to Chongqing University of Medical Sciences Chongqing P.R. China

The purpose of this study is to distinguish respiratory syncytial virus （RSV） infection and immunology between immunocompetent and immunocompromised murine and to explore immune mechanism of RSV infection. At various time points after RSV infection of BALB/c mice and nude mice, pulmonary viral titers were assayed, RSV antigen was tested by direct immunofluorescent assay and immunohistochemistry. Pulmonary mRNA expressions of Toll like receptor （TLR）2 and TLR4 were assayed by RT-PCR. CD4^＋ ceils and CD8 ^＋ ceils in peripheral blood were examined by flow cytometry and plasma total IgE was assayed by ELISA. Leukocytes in bronchoalveolar lavage fluid （BALF） and pulmonary histology were identified to reflect airway inflammation. It was found that RSV titers of both mice peaked on the 3rd day post infection with a much higher level of viral titer in nude mice than in BALB/c mice and a longer viral duration in nude mice （over 9 days post infection） than in BALB/c mice （6 days post infection）. RSV infection induced higher viral antigen expression in nude mice （0.267 ±0.045） than in BALB/c mice （0. 168 ±0.031）. RSV infection enhanced pulmonary TLR4 expression of BALB/c mice （51.96% ±11.34%） and nude mice （48.96% ± 12.35%） compared with each control （34.04% ±10.06% and 32.37% ±9.87% respectively）. CD4^＋ peripheral blood ceils increased in RSV infected BALB/c mice （66.51% ±2.09% ） compared with the control BALB/c mice （51.63% ±5.90%）, and CD4^＋ ceils and CD8^＋ ceils were deficient in nude mice. RSV infection increased plasma total IgE in both mice, and BALB/c mice had a larger amount of IgE on the 7th day post infection （9.02 ng/ml ±2.90 ng/ml） and on the 14th day post infection （12.76 ng/ml ±4.15 ng/ml） than corresponding nude mice （3.72 ng/ml ±1.06 ng/ml and 7.62 ng/ml ±3.08 ng/ml respectively on the 7th and 14th day post infection）. RSV infected nude mice had more severe airway inflammation than infected BALB/c mice. It is concluded that BALB/c mice and nude mice presented

关键词： Respiratory syncytial virus Mice Immunocompetence Immunodeficiency

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基于神经网络的运动控制系统算法研究

计算机工程与应用 2006年第3期42卷 205-208,211页

作者：周治平夏娟华东理工大学上海200237 江南大学江苏无锡214122

文章研究了神经网络控制算法在运动控制系统中的应用,以典型的运动控制系统为例,基于神经网络内模自适应控制方法设计速度环控制器。采用递归神经网络的ANNI用于充分逼近被控对象的动态模型,前向反馈神经网络ANNC用作控制器,在网络拓扑... 详细信息

文章研究了神经网络控制算法在运动控制系统中的应用,以典型的运动控制系统为例,基于神经网络内模自适应控制方法设计速度环控制器。采用递归神经网络的ANNI用于充分逼近被控对象的动态模型,前向反馈神经网络ANNC用作控制器,在网络拓扑结构的设计及训练算法的选择上,进行探讨,提供了解决方法并获得了一些有意义的结论。实时仿真结果表明了基于神经网络的控制系统有很强的自适应能力和抗负载扰动能力,在系统的性能上优于传统的控制算法,为类似运动控制系统的设计与研究提供了新的方法。

关键词：神经网络内模自适应运动控制实时仿真控制器网络拓扑结构

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电动汽车峰谷分时电价时段充电优化模型

电源技术 2016年第9期40卷 1848-1850,1877页

作者：夏娟娟周明坚袁帅夏斌长沙理工大学电气与信息工程学院湖南长沙410114 湖南省送变电工程公司湖南长沙410114 国网浙江海宁市供电公司浙江海宁314400

利用峰谷分时电价引导电动汽车用户进行有序充电,在减小大规模电动汽车接入电网对其造成的影响的同时,还能减小电网峰谷差。在得到电动汽车充电负荷的基础上,通过实际案例验证了电价时段和响应度对充电负荷曲线的影响;进而构建以电网负... 详细信息

利用峰谷分时电价引导电动汽车用户进行有序充电,在减小大规模电动汽车接入电网对其造成的影响的同时,还能减小电网峰谷差。在得到电动汽车充电负荷的基础上,通过实际案例验证了电价时段和响应度对充电负荷曲线的影响;进而构建以电网负荷峰谷差最小所对应的峰谷电价时段为目标的优化模型,利用粒子群算法进行优化求解;通过算例分析验证了该模型的有效性。

关键词：峰谷分时电价电动汽车有序充电优化模型粒子群算法