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实用放射学杂志 2005年第3期21卷 325-327页

作者：徐庆云浙江省长兴县人民医院放射科浙江长兴313100

卵巢肿瘤在女性盆腔病变中较为常见,有良恶性之分.关于这方面的文献报道有不少,本文着重对良恶性卵巢肿瘤的ＣＴ鉴别诊断要点,进行客观地评价,从而进一步提高对该病变的定性诊断准确率.

关键词：卵巢肿瘤定性诊断浆液性囊腺瘤生殖器肿瘤子宫浆膜黏液性囊腺瘤鉴别诊断 CT

血清肌钙蛋白I变化在多发伤患者早期预后评估中的价值

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中国现代医学杂志 2014年第22期24卷 89-91页

作者：谭宁锋湖南省新田县人民医院急诊科湖南新田425700

目的观察多发伤患者心脏肌钙蛋白I的动态变化并探讨其与急性生理学和长期健康评分（APACHEⅡ）的关系。方法选取该院2011年1月~2012年12月收治的多发伤患者228例为研究对象,根据APACHEⅡ评分分为危重组（APACHEⅡ≥15）125例和普通组（A... 详细信息

目的观察多发伤患者心脏肌钙蛋白I的动态变化并探讨其与急性生理学和长期健康评分（APACHEⅡ）的关系。方法选取该院2011年1月~2012年12月收治的多发伤患者228例为研究对象,根据APACHEⅡ评分分为危重组（APACHEⅡ≥15）125例和普通组（APACHEⅡ〈15）103例,并测定伤后入院时血清cTNI水平。结果 228例患者中cTNI异常121例（53.07%）;血清cTNI水平危重组〉普通组（P〈0.01）,APACHEⅡ评分越高,cTNI水平越高。结论血清cTNI可作为判断多发伤患者早期预后的参考指标。

关键词：多发伤心脏肌钙蛋白I 急性生理学和长期健康评分Ⅱ

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薄煤层开采技术与综采设备的发展

煤矿开采 2013年第1期18卷 5-7页

作者：宁桂峰天地科技股份有限公司开采设计事业部北京100013

介绍了薄煤层的综合机械化开采几种配套方式的适应性,分析了薄煤层综采设备的特点,指出了薄煤层综采设备及支护设备液压支架的发展趋势。

关键词：薄煤层综采设备液压支架

The Binding Ability Analysis of the Normal VLDL Receptor and Its Mutant

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Journal of Huazhong University of Science and Technology(Medical Sciences) 2001年第3期21卷 177-180,194页

作者：屈伸冯宁刘志国周华邓耀祖冯宗忱 Department of Biochemistry Tongji Medical College Huazhong University of Science and Technology Wuhan

The ligand-binding domain of VLDL receptor contains eight imperfectly similar repeats. To discuss the contribution of each repeat to ligand binding, the RT-PCR technique was used to clone the VLDLR-cDNA from the heart muscle of Chinese people. Two recombinants were further constructed, which contained the full-length cDNA of VLDLR and the mutant lacking repeats 1-5. CHO cell line was transfected with two recombinants. The expression of VLDLR gene could be detected by RT-PCR from the CHO cells transfected with pCD-VR. The results of binding experiments showed that the ability of the CHO cells transfected with the full-length cDNA of VLDL-R binding DiI-labeled β-VLDL was higher than that of the CHO cells transfected with the mutant. Our findings indicated that human VLDL-R gene could be expressed effectively on CHO cells, and the receptor was almost inactivated when repeats1-5 were deleted.

关键词： VLDL receptor gene expression, β-VLDL CHO cells

Ginseng Panaxosides Rb1,as a central regulator,reduces body weight in diet-induced obese mice

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Ginseng Panaxosides Rb1,as a central regulator,reduces body ...

DESIGN OF MULTI-SERVICE SDH NETWORKS: FORMULATION AND HEURISTICS

第二届两岸四地营养改善学术会议

作者： LIN ning,JIN Di,feng Xiaohui,WANG Jie,TIAN Jianqing,CAI Donglian 第二军医大学附属长海医院临床营养科

Aims Ginsenoside Rb1,the main component of ginsenosides,have been reported to show a variety of efficacies such as anticancer,antihypertension,antidiabetes,and *** the present study,the anti-obesity effect of Ginseng ...

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来源： cnki会议评论

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Journal of Electronics(China) 2003年第3期20卷 215-219页

作者： Xi Kang Ge ning feng Chongxi (Department of Electronic Engineering, Tsinghua University, Beijing 100084) Department of Electronic Engineering Tsinghua University Beijing

Multi-service SDH networks support both packet- and circuit-switched traffic. Optimal design of such a network means to guarantee the circuit connections and configure a logical packet-switched topology with lowest congestion. This letter first formulates the problem as a mixed integer linear programming, which achieves optimal solution but has high computation. Then a heuristic algorithm is proposed to yield near-optimal solution efficiently. Performance of the algorithm is verified by an example.

关键词： Multi-service networks Logical topology design SDH

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纵振激励频率对圆盘弯曲振动特性的影响

振动与冲击 2011年第4期30卷 100-102页

作者：宁景锋贺西平李娜陕西师范大学应用声学研究所西安710062

利用有限元方法,计算并分析了具有一定大小的激励面积、频率不同的纵向夹心式换能器激励圆盘中心时,产生一阶弯曲振动的规律。结果表明:随着激励源频率的逐渐提高,圆盘弯曲振动的基频在不断增大,节圆半径也在增大,圆盘圆心处的位移振幅... 详细信息

利用有限元方法,计算并分析了具有一定大小的激励面积、频率不同的纵向夹心式换能器激励圆盘中心时,产生一阶弯曲振动的规律。结果表明:随着激励源频率的逐渐提高,圆盘弯曲振动的基频在不断增大,节圆半径也在增大,圆盘圆心处的位移振幅先增大后减小。实验测试与有限元计算结果基本吻合。该研究为此类复合纵弯振动系统的设计和实际应用提供了一定的参考。

关键词：激励源圆盘弯曲振动基频有限元方法

量子局域效应和应力对GaSb纳米线电子结构影响的第一性原理研究

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物理学报 2015年第22期64卷 373-379页

作者：李立明宁锋唐黎明湖南大学物理与微电子科学学院长沙410082

采用基于密度泛函理论的第一性原理计算方法,研究了不同晶体结构和尺寸的GaSb纳米线能带结构特性和载流子的有效质量,以及单轴应力对GaSb纳米线能带结构的调控.研究结果表明:闪锌矿结构[111]方向和纤锌矿结构[0001]方向的小尺寸GaSb纳... 详细信息

采用基于密度泛函理论的第一性原理计算方法,研究了不同晶体结构和尺寸的GaSb纳米线能带结构特性和载流子的有效质量,以及单轴应力对GaSb纳米线能带结构的调控.研究结果表明:闪锌矿结构[111]方向和纤锌矿结构[0001]方向的小尺寸GaSb纳米线均出现间接带隙的能带结构,并可通过单轴应力来实现纳米线能带结构由间接带隙到直接带隙的转变,其中,闪锌矿结构[111]方向GaSb纳米线仅在受到单轴拉伸应力时才发生能带由间接带隙到直接带隙的转变,而纤锌矿结构[0001]方向GaSb纳米线无论受单轴拉伸还是压缩应力的作用均可实现能带由间接带隙到直接带隙的转变;[111]和[0001]方向GaSb纳米线的带隙和载流子有效质量与纳米线直径呈非线性关系,并随纳米线直径的减小而增大;同一方向和尺寸的GaSb纳米线,其空穴有效质量要小于电子有效质量,这表明小尺寸GaSb纳米线有利于空穴载流子输运.

关键词： GaSb纳米线有效质量能带结构应力调控

基于双能X线吸收仪的骨折风险评估:骨密度以外的因素

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中华骨质疏松和骨矿盐疾病杂志 2023年第4期16卷 381-387页

作者：传丰宁周波重庆大学附属涪陵医院内分泌科重庆408099 重庆医科大学附属第一医院内分泌科重庆400016

脆性骨折系骨质疏松症患者最严重的并发症。尽管双能X线吸收测量仪(dual-energy X-ray absorptiometry,DXA)测量的骨密度(bone mineral density,BMD)广泛应用于评估骨折风险,但仅依据BMD测量结果往往会低估骨折风险。近年来,随着DXA技... 详细信息

脆性骨折系骨质疏松症患者最严重的并发症。尽管双能X线吸收测量仪(dual-energy X-ray absorptiometry,DXA)测量的骨密度(bone mineral density,BMD)广泛应用于评估骨折风险,但仅依据BMD测量结果往往会低估骨折风险。近年来,随着DXA技术的快速发展,其实用性已从BMD扩展到其他新功能,如检测寂静性骨折、评估骨质量以及测定体成分等,这为骨折的临床预防及治疗策略提供了新思路。本文对基于DXA除BMD外的其他参数在预测骨折风险方面的研究进展做一综述。

关键词：双能X线吸收测量仪骨折风险骨质量体成分

Change patterns of oncomelanid snail burden in areas within the Yangtze River drainage after the three gorges dam operated

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Infectious Diseases of Poverty 2019年第3期8卷 64-71页

作者： Si-Min Dai Jeffrey Edwards Zhou Guan Shan Lv Shi-Zhu Li Li-Juan Zhang Jun feng ning feng Xiao-Nong Zhou Jing Xu National Institute of Parasitic Diseases Control and Prevention Chinese Center for Disease Control and Prevention207 Ruijin Er RoadShanghai 200025China Key Laboratory of Parasite and Vector Biology Ministry of HealthWHO Collaborating Centre for Tropical DiseasesNational Tropical Disease Research Center207 Ruijin Er RoadShanghai 200025China Department of Global Health University of WashingtonSeattleWashingtonUSA Center for Global Public Health Chinese Center for Disease Control and PreventionRoom 211155 Changbai RoadChangping DistrictBeijing 102206China Center of Disease Control and Prevention of Henan Province 105 Nongyenan RoadZhengzhou 450016HenanChina

Background:An"integrated control"strategy has been implemented within seven provinces at highest risk for schistosomiasis along Yangtze River in Peoples'Republic of China(***)since *** O ncom elania hupensis is the only intermediate host of the blood fluke(Schistosom a japonicum),controlling the distribution of snails is considered an essential and effeaive way to reduce the risk of schistosomiasis *** study aimed to determine the snail area burden and annual trend among provinces with potential risk for schistosomiasis along the Yangtze River,above and below the Three Gorges Dam(TGD).Methods:This retrospective study utilized data previously collected from the National Parasitic Diseases Control Information Management System(NPDCIMS)on annual snail surveys from 2009 to *** statistics were performed for analyzing the snail burden by provinces,counties,type of environmental location and year,and mapping was conducted to present the snails ***:From 2009 to 2017,the total snail infested area decreased by 4.22%,from 372253 hm^2 to 356553 hm^2 within the seven high risk *** majority of snails were found in the marshland and lake regions,outside of control *** total snail burden trend remained relatively stable in upstream regions above the TGD from 2010 to 2015,while the trend decreased within downstream regions during this *** 2016 and 2017,the total snail burden trend increased in both upstream and downstream provinces,however,upstream saw a larger *** 2009 to 2017,there were a total of 5990 hm^2 of newly developed snail areas in the seven study provinces and the majority were concentrated in regions below the TGD,accounting for 5610 hm^2(93.70%).Conclusions:There has been a decline in total snail counts from 2009 to ***,new snail breeding areas were formed mainly within provinces downstream the TGD due to spread of snails,indicated that the oncomelanid snail would be d

关键词： Schistosomiasis Oncom elania hupensis Yangtze River Three gorges dam China Operational research