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云南华电绿水河电厂1、2号厂变并列运行技术改造

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云南水力发电 2024年第6期40卷 51-54页

作者：马成武华电云南发电有限公司绿水河发电厂云南个旧661014

变压器是电力系统中最重要的电气设备之一,在电力系统有“承上启下”之作用且一般需要不间断长时间运行,为了使变压器安全经济运行及提高供电的可靠性和灵活性,在运行中通常将两台或以上变压器并列运行。文章主要对绿水河电厂二级站1、... 详细信息

变压器是电力系统中最重要的电气设备之一,在电力系统有“承上启下”之作用且一般需要不间断长时间运行,为了使变压器安全经济运行及提高供电的可靠性和灵活性,在运行中通常将两台或以上变压器并列运行。文章主要对绿水河电厂二级站1、2号厂变无法并列运行的原因展开分析及技术改造措施做具体讨论。因技改后的变压器运行方式及其经济效益等达到了预期目标,希望对同行业的其他单位,如若遇到此问题时能够提供解决问题的思路。

关键词：变压器电力系统并列运行相序故障分析

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直流泄露和直流耐压试验的意义

云南水力发电 2024年第6期40卷 3-6页

作者：马成武华电云南发电有限公司绿水河发电厂云南个旧661014

主要讲述绿水河发电厂季节性检修过程中进行的电气预防性试验,针对发电机、变压器、母线电缆、避雷器、互感器等电气一次设备测量直流泄漏电流和直流耐压试验的方法及试验特点。通过试验的方法检查设备经过1个试验周期的运行是否存在缺... 详细信息

主要讲述绿水河发电厂季节性检修过程中进行的电气预防性试验,针对发电机、变压器、母线电缆、避雷器、互感器等电气一次设备测量直流泄漏电流和直流耐压试验的方法及试验特点。通过试验的方法检查设备经过1个试验周期的运行是否存在缺陷,按相关规程的要求,检验设备的电气性能及相关参数是否满足规程的要求,为一次设备的安全、稳定运行提供试验依据,为设备的检修、维护提供数据支撑。

关键词：发电机直流泄露直流耐压绝缘性能检测

Inhibitory effect of parvovirus H-1 on the formation of colonies of human hepatoma cell line in vitro and its tumors in nude mice

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Cell Research 1994年第1期4卷 47-56页

作者： YAN SHANGJUN chengwu ma XIANHUA CHEN SHANHONG WAN ZUYU LUO(Physiology and Biophysics Department, Fudan University,Shanghai 200433, China) Physiology and Biophysics Department Fudan University Shanghai China

The inhibitory effect of parvovirus H-1 on the colonyforming ability in vitro of QGY-7703, a cultured human hepatoma cell line, and on the formation and growth of its tumors in nude mice was studied. With higher multiplicity of infection (MOI) of H-1 given, survival of the QGY-7703 cells was found to be decreased. H-1 DNA amplification level at 30 h postinfection(p.i.) was detected to be 7.4 times higher than that at 2 h by dispersed cells assay, while the cells were delayed to enter into S *** were formed in the indicator cells (new-born human kidney cell line, NBK) by progeny H-1 virus particles released from the infected QGY-7703 cells by infectious cell center assay. The formation of tumors in nude mice by QGY-7703 cells which were injected s c at 2 h postinfection was observed to be prevented in 2 groups with given MOI 25 and 50. The tumor growth of MOI 10 group occurred at a lower exponential rate than that of control,after a 20 d latent period. It was evident that parvovirus H-1 exhibited a direct inhibitory effect on the formation and growth of human hepatoma cells in vivo as well as in vitro.

关键词： Parvovirus H-1 human hepatoma cell line colony formation nude mice inhibitory effect

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关于发展农业私营企业的研究

农业经济问题 2005年第12期26卷 65-68页

作者：成新华马成武扬州大学经济学院扬州225009 吉林省乡镇企业局长春130051

提高农业组织化程度必须大力推进农业产业化进程。农业产业化以农业企业化为基础和前提,没有企业化也就没有产业化。农业企业化的发展重在选择组织方式和培植微观主体,农业生产的特点、资本结构和企业家的素质等,决定了私营是农业企业... 详细信息

提高农业组织化程度必须大力推进农业产业化进程。农业产业化以农业企业化为基础和前提,没有企业化也就没有产业化。农业企业化的发展重在选择组织方式和培植微观主体,农业生产的特点、资本结构和企业家的素质等,决定了私营是农业企业的最佳形式。中国农业私营企业已经在农村经济社会中承担着主力军的作用,其进一步发展依赖于农业企业家的成长。

关键词：农业组织化农业产业化农业企业化农业私营企业企业家

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铜绿微囊藻代谢对藻源膜污染影响和作用机制

环境科学与技术 2023年第1期46卷 15-23页

作者：马成武张艳陈伟东北农业大学水利与土木工程学院黑龙江哈尔滨150030 松辽水利委员会流域规划与政策研究中心吉林长春130012

藻细胞生长代谢受藻细胞分布形式的影响,文章为研究藻细胞在不同氮浓度下藻细胞生长代谢差异及其藻源膜污染的变化,将纯净的藻细胞预覆盖在超滤膜表面,原水中硝酸钠浓度设置为0、24.7、247和1235 mg/L,从膜表面观测、膜污染阻力变化、... 详细信息

藻细胞生长代谢受藻细胞分布形式的影响,文章为研究藻细胞在不同氮浓度下藻细胞生长代谢差异及其藻源膜污染的变化,将纯净的藻细胞预覆盖在超滤膜表面,原水中硝酸钠浓度设置为0、24.7、247和1235 mg/L,从膜表面观测、膜污染阻力变化、原水水质变化、藻细胞生长代谢行为对藻源膜污染机理定性分析。结果表明,膜污染主要成因均为滤饼层污染,大小表现为培养基组>低氮组>无氮组>高氮组。藻细胞在低氮组、培养基组中正常生长代谢,大量藻细胞及胞外有机物(EOM)附着在膜表面,引起滤饼层厚度变厚、结构致密;无氮组藻细胞在第10天开始褪绿,褪绿状态下短期保持完整细胞形态,褪绿过程中释放胞内有机物(IOM)引起滤饼层结构致密;高氮组藻细胞生长停滞少量,少量藻细胞碎片、IOM等附着在滤饼层上引起滤饼层结构轻微改变。分析表明,藻细胞生长引起的藻细胞数目与EOM增多造成严重的藻源膜污染。

关键词：超滤膜铜绿微囊藻藻源膜污染滤饼层

WTO框架下国际蔬菜市场准入与贸易壁垒——兼论中国蔬菜产业“走出去”战略的实施

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农业经济问题 2006年第12期27卷 61-64页

作者：肖长惜马成武华中农业大学经济管理学院武汉430070 浙江大学管理学院杭州310029

蔬菜产业属于典型的劳动密集型产业,中国在该领域具有比较优势,但由于遭遇到严重的技术性贸易壁垒而导致市场准入性很差,贸易争端不断。然而,加入WTO后因为国内产业政策要符合全球多边贸易谈判所达成协议的原则精神,我国蔬菜产业发展的... 详细信息

蔬菜产业属于典型的劳动密集型产业,中国在该领域具有比较优势,但由于遭遇到严重的技术性贸易壁垒而导致市场准入性很差,贸易争端不断。然而,加入WTO后因为国内产业政策要符合全球多边贸易谈判所达成协议的原则精神,我国蔬菜产业发展的外部约束条件显著增强,要研究和制订中国蔬菜产业未来的发展政策,就必须对国际蔬菜市场准入与贸易壁垒有所了解和把握。文章在此基础上还提出了中国蔬菜产业积极跨越技术性贸易壁垒,全面推进标准化、集约化、产业化,实施“走出去”战略的相关对策和政策建议。

关键词：蔬菜产业市场准入技术性贸易壁垒蔬菜出口

Cardiovascular risk burden,dementia risk and brain structural imaging markers:a study from UK Biobank

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General Psychiatry 2024年第1期37卷 94-102页

作者： Yaying Cao Gaohong Zhu chengwu Feng Jing Chen Wei Gan Yuan ma Yonghua Hu Klodian Dhana Trudy Voortman Jie Shen Ting Li Yan Zheng Changzheng Yuan Geng Zong Department of Food Nutrition and Health School of Medicine and HealthHarbin Institute of TechnologyHarbinHeilongjiangChina CAS Key Laboratory of Nutrition Metabolism and Food SafetyShanghai Institute of Nutrition and HealthChinese Academy of SciencesShanghaiChina Department of Nuclear Medicine First Affiliated Hospital of Kunming Medical UniversityKunmingYunnanChina Neurology Department Zhongshan Hospital Affliated with Fudan UniversityShanghaiChina Medical Research Council Population Health Research Unit University of OxfordOxfordUK Department of Genetics Novo Nordisk Research Centre OxfordOxfordUK Harvard University T H Chan School of Public Health BostonMassachusettsUSA Department of Epidemiology and Biostatistics School of Public HealthPeking UniversityBeijingChina Department of Internal Medicine Rush University Medical CenterChicagolinoisUSA Department of Epidemiology rasmus MCUniversity Medical Center RotterdamRotterdamThe Netherlands Division of Human Nutrition and Health Wageningen University&ResearchWageningenThe Netherlands School of Public Health the Second Afliated HospitalZhejiang University School of MedicineHangzhouZhejiangChina First Afiliated Hospital of Kunming Medical University KunmingYunnanChina State Key Laboratory of Genetic Engineering School f ife SCciencesFudan UniversityShanghaiChina Ministry of Education Key Laboratory of Public Health Safety School of Public HealthFudan UniversityShanghaiChina The Key Laboratory of Inteligent Preventive Medicine of Zhejang Province HangzhouZhejiangChina Shanghai Jiao Tong University Affiliated Sixth People's Hospital ShanghaiChina

Background Cardiovascular risk burden is associated with dementia risk and neurodegeneration-related brain structure,while the role of genetics and incident cardiovascular disease(CVD)remains *** To examine the association of overall cardiovascular risk burden with the risk of major dementia subtypes and volumes of related brain regions in a large sample,and to explore the role of genetics and CVD *** A prospective study among 354 654 participants free of CVD and dementia(2006-2010,mean age 56.4 years)was conducted within the UK Biobank,with brain magnetic resonance imaging(MRl)measurement availablefor 15104participants since *** risk burden was evaluated by the Framingham General Cardiovascular Risk Score(FGCRS).Dementia diagnosis was ascertained from inpatient and death register *** Overamedian 12.0-yearfollow-up,3998 all-cause dementia cases were *** FGCRS was associated with increasedall-cause dementia risk after adjusting for demographic,major lifestyle,clinical factors and the polygenic risk score(PRS)of Alzheimer's *** the high versus low tertile of FGCRS,the odds ratios(ORs)and 95%confidence intervals(Cls)were 1.26(1.12 to 1.41)for all-cause dementia,1.67(1.33 to 2.09)for Alzheimer's disease and 1.53(1.07 to 2.16)for vascular dementia(all p_(treng)matter hyperintensities,smaller cortical volume and smaller grey matter *** Our findings suggest that the positive association of cardiovascular risk burden with dementia risk also applies to major dementia subtypes.T

关键词： Cardiovascular diagnosis burden