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Comparative Studyon DC Flashover Characteristics of Iced Insulators with Various Test Methods

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高电压技术 2012年第8期38卷 2051-2058页

作者： HU Jianlin LUO mingwu JIANG Xingliang SUN Caixin zhang Zhijin SHU Lichun State Key Laboratory of Power Transmission Equipment ~ System Security and New Technology College of Electrical Engineering Chongqing University Chongqing 400030 China Hubei Suizhou Electric Power Supply Company Suizhou 441300 China

In this paper,the DC flashover characteristics of iced insulator strings were explored in the multi-functional artificial climate chamber by four methods,namely,the average flashover voltage method,the minimum flashover voltage method(U-curve method),the maximum withstand method and the 50% withstand *** DC porcelain insulator strings and composite insulators were used as *** results indicate that the average flashover voltage and the minimum flashover voltage obtained by the average flashover voltage method and the minimum flashover voltage method,respectively,obey a normal *** 50% flashover voltage could be gained by the two methods with a minimal test number of nine and were about 8.0%~9.8% and 3.8%~5.9% respectively higher than that gained by the 50% withstand *** justified the feasibility of employing the Ucurve method and the average flashover voltage method to study the flashover characteristics of iced insulators and their affecting factors.

关键词：局部放电射频信号放电量高电压技术

The present situation and the prospect of medical cyclotrons in China

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The present situation and the prospect of medical cyclotrons...

Distribution and Characteristics of Nitraria sphaerocarpa nebkhas in a Gobi habitat outside an oasis in Hexi Corridor region,China

第一届中国粒子加速器会议

作者： zhang TianJue FAN mingwu WEI SuMin CHEN ShengZu YANG Fang China Institute of Atomic Energy(CIAE) Huazhong University of Science and Technology Cancer Institute and Hospital Chinese Academy of Medical Sciences

The paper introduces the increasing applications of cyclotrons in the field of health care and some major work carried out *** emphasis is placed on the introduction to the application status and the development process of medical cyclotrons in *** paper has assessed possible developing trends of medical cyclotrons based on the current application demand and the technological development status.

关键词： medical cyclotrons diagnosis therapy

来源： cnki会议 cnki会议评论

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Research in Cold and Arid Regions 2012年第4期4卷 288-295页

作者： YongZhong Su Rong Yang ZhiHui zhang mingwu Du Linze Inland River Basin Research Station Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of SciencesLanzhouGansu 730000China

Nitraria sphaerocarpa Maxim., a typical desert plant which often appears in nebkha form, is widely distributed along the periph- ery of oasis in arid regions of Northwest China, and plays an important role in desertification control around oases. In this paper, the characteristics and distribution patterns ofN. sphaerocarpa nebkhas were investigated in a Gobi environment outside an oasis. Results shows that about 200 N. sphaerocarpa nebkhas per hectare was recorded and total sand sediments was 25 m3/ha. Nebkhas vary in size, and the mean height （H） and horizontal composition （L） were 15 cm and 80 cm, respectively. There exists a signifi- cant linear relationship between H and L, suggesting that the investigated nebkhas are mostly in the growth stage. The numbers, height and sand deposit ofnebkhas decreased with increasing distance away from the oasis. Grain-size analysis indicates that the mean grain size of sediments at the crests of nebkhas increased with increasing nebkha height. Organic C and total N concentra- tions were related to the mean grain size. It was concluded that N. sphaerocarpa shrubs are efficient horizontal sand traps for wind-driven sediments. A better understanding of the development of nebkha can provide information for the design of biological sand control measures around oases in add regions.

关键词： N. sphaerocarpa nebkha sediments Gobi oasis Northwest China

Efficacy and safety evaluation of intravenous infusion of cervus and cucumis polypeptides for treatment of avascular necrosis of the femoral head: a randomized clinical trial

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Journal of Traditional Chinese Medicine 2016年第1期36卷 39-44页

作者： Wei Liyou zhang Hongwei Li Xinmin Yang Chunyan Wang Guoqiang zhang Lifeng Cui mingwu Han Lijun Department of Orthopaedics Orthopaedic Hospital Affiliated with Hebei United University (The Second Hospital of Tangshan) Department of Intensive Care Unit Orthopaedic Hospital Affiliated with Hebei United University (The Second Hospital of Tangshan) Department of Orthopedics Qian Hai Femoral Head Hospital of Beijing

OBJECTIVE: To investigate the efficacy and safety of intravenous cervus and cucumis polypeptides for treating avascular necrosis of the femoral head(ANFH) in regard to pain and hip function in a randomized clinical ***: A total of 96 subjects with ANFH who were recruited at the Orthopaedic Hospital Affiliated with Hebei United University and Qian Hai Femoral Head Hospital of Beijing were assigned by lottery to an intervention group(n = 48) or a control group(n = 48). All subjects underwent physical therapy and rehabilitation exercises. In addition,subjects in the intervention group were given intravenous infusions of cervus and cucumis polypeptides. Visual analogue scale(VAS), Harris hip score,and radiography or magnetic resonance imaging were applied to assess all subjects at the beginning of treatment and 3, 6, and 9 months afterward. All the subjects were followed up for 2 ***: At the beginning of treatment, there were no statistically significant differences between the two groups in terms of the general condition of patients or the VAS and Harris hip scores(all P > 0.05). At 3, 6, and 9 months after treatment,however, the VAS score decreased and the Harris hip score increased in all patients, with the improvement of intervention group significantly greater than that of the control group(P 0.05).CONCLUSION: Intravenous infusion of cervus and cucumis polypeptides relieved pain and improved hip function of subjects with ***, the intravenous infusion of cervus and cucumis polypeptides was a safe, effective treatment for ANFH.

关键词： Femur head necrosis Pain measurement Cervus and cucumis polypeptide injection Randomized clinical trial

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细胞周期蛋白E与白血病

中华血液学杂志 2001年第4期22卷 219-221页

作者：王颖徐世荣河北医科大学第二医院石家庄050000

血病细胞的细胞周期存在异常调节。细胞周期蛋白(cyclin)与细胞周期蛋白依赖激酶(cyclin dependent kinase,CDK)结合，形成细胞周期调节复合物(cyclin-CDK),激活CDK，使cyclin-CDK具酶活性，催化相应底物磷酸化是细胞周期进展所必需。cy... 详细信息

血病细胞的细胞周期存在异常调节。细胞周期蛋白(cyclin)与细胞周期蛋白依赖激酶(cyclin dependent kinase,CDK)结合，形成细胞周期调节复合物(cyclin-CDK),激活CDK，使cyclin-CDK具酶活性，催化相应底物磷酸化是细胞周期进展所必需。cyclin E属于G1期细胞周期的正调节因子，参与G１/S转换点功能的调控，与其他参与G1/S转换点功能调控的因子cyclin DS、抑癌基因视网膜神经胶质细胞瘤蛋白(retinoblastoma protein, pRb)、转录因子E2F、抑癌基因P53、KIP家族、CDK2,4,5等相互作用决定细胞的生存和凋亡[1]。

关键词：白血病细胞周期蛋白E 生物学特性基因结构

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静电纺短纤维的制备及其生物医学应用

纺织学报 2021年第5期42卷 1-8页

作者：张蓓蕾沈明武史向阳东华大学化学化工与生物工程学院上海201620

传统静电纺纳米纤维常作为组织工程支架被用于修复缺损部位,往往必须借助外科手术有创植入,极大限制了其在生物医学领域中的应用。为促进静电纺丝技术的开发和应用,综述了静电纺短纤维的制备及其功能化的方法,分类介绍了功能化短纤维在... 详细信息

传统静电纺纳米纤维常作为组织工程支架被用于修复缺损部位,往往必须借助外科手术有创植入,极大限制了其在生物医学领域中的应用。为促进静电纺丝技术的开发和应用,综述了静电纺短纤维的制备及其功能化的方法,分类介绍了功能化短纤维在诊断检测、治疗和组织工程这3个方面的生物医学应用;系统分析通过调节工艺参数、后续加工等方式保留静电纺纳米纤维膜的内在功能,以及基于其小尺寸和单分散性,避免纤维膜植入所造成的机体侵入创伤;最后,结合静电纺短纤维当前发展情形分析了其在生物医学领域应用中所面临的挑战和未来的发展前景。

关键词：静电纺丝纳米纤维功能化短纤维诊断检测肿瘤治疗组织工程

Treatment of primary hepatic carcinoma by transcatheter arterial perfusion of batroxobin combined with TACE:a preliminary clinical study

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The Chinese-German Journal of Clinical Oncology 2011年第2期10卷 96-99页

作者： Tianjun Gao mingwu Lou Hui Wang Yi Fan Yunxia Shen Jiyin Ruan Hongguang zhang Department of Interventional Radiology Longgang District Central Hospital of Shenzhen Shenzhen 518116 China Department of Intervention Tumour Hospital of Jilin Province Changchun 130012 China

Objective:The aim of the study was to explore the therapeutic efficacy and safety of batroxobin in patients with primary hepatic carcinoma(PHC) and the advantages of transcatheter arterial perfusion of batroxobin combined with transcatheter arterial chemoembolization(TACE).Methods:Forty patients with PHC were randomized into experimental group(transcatheter arterial perfusion of batroxobin combined with TACE treatment,20 patients) and control group(TACE alone group,20 patients).The patients were followed up and the data were recorded,compared and ***:(1) Compared with the control group,the FIB level in the experimental group was significantly decreased at the first month after treatment(P 0.05).Conclusion:Batroxobin can rapidly and effectively decrease the FIB level of the PHC *** it may be used as an effective and safe adjuvant drug for the treatment of primary hepatic *** arterial perfusion of batroxobin combined with TACE therapy has advantages in comparison with TACE alone *** could be taken as a new therapeutic regimen in the PHC treatment.

关键词： batroxobin liver neoplasms fibrinogen therapy transcatheter arterial chemoembolization(TACE)

Comprehensive Refurbishment of 200 MW Thermal Power Generating Units

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Electricity 1997年第2期 26-30页

作者： zhang Fuyin(Northeast China Electric Power Group Corp.)Shi mingwu(Northeast China Electric Power Research Institute)

This paper introduces the refurbishmentof 200 MW generating units in NortheastPower Network in recent years, to improvetheir operation reliability, economy,adjustability and controllability. It mainlydescribes the advanced technology used inimproving the combustion, optimizingpulverized coal distribution, economizerantiwear and strengthening heat transfer ofboiler sets and the refurbishment effects. Itintroduces technical measures and prot1ts inretro fit of flow passage of triple-flow lowpressure steam turbines, as well as theapplication of digital electronic hydraulic(DEH) govemors to realize the coordinatedcontrol and energy saving of generating units.(I) Refurbish ment of 200 MWBoiler Equipment in NortheastPower NetworkAbstractThis part introduces some measuresperformed to improve the operation level of2OO MW boiler sets of the power plants inNortheast Power Network in recent *** the application of conce11trated(conc)-weak c0mbustion technology, theresearch and application of high-efficiencypulverized coal classifier, the application ofantiwear economizer and comprehensiveimprovement of insufficient temperature ofmain steam and reheated stean1. Afterrefurbishment the operating econo111y andsafety of the generating units are greatlyimproved.

关键词： boiler burner c1assifier economizer comprehensive improvement

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15CrMo钢珠光体球化对性能的影响

金属热处理 2015年第6期40卷 41-44页

作者：刘明武苏辉张晋坤辽宁石油化工大学机械工程学院辽宁抚顺113001

采用高温加速时效的方法模拟15CrMo钢珠光体球化的演变过程,测试了不同球化等级15CrMo钢的室温及高温力学性能。结果表明,在高温时效过程中,随着保温时间增加,珠光体球化程度加重,使材料的抗拉强度和屈服强度降低;球化减少了铁素体基体... 详细信息

采用高温加速时效的方法模拟15CrMo钢珠光体球化的演变过程,测试了不同球化等级15CrMo钢的室温及高温力学性能。结果表明,在高温时效过程中,随着保温时间增加,珠光体球化程度加重,使材料的抗拉强度和屈服强度降低;球化减少了铁素体基体的固溶原子,使材料硬度降低。

关键词： 15CrMo钢珠光体球化强度显微硬度