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High Pressure Raman Study of Phase Transitions on Solid Benzene Using Raman Notch Filter Set

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Chinese Physics Letters 1996年第4期13卷 293-296页

作者： XU Li-wen WANG Ru-ju CHEN liang-chen Institute of Physics Chinese Academy of SciencesBeijing 100080

A high-throughput Haman notch filter set has been manufactured and used to collect the Raman scattering signals of pressure-hiduced phase transitions of solid benzene in a diamond anvil cell up to 15 GPa at room *** changes in the profiles as well as the frequencies of Raman scattering spectra are observed and enable us to determine the phase transition.

关键词： temperature. transition. Transition

组合电力系统概率安全性与概率充裕性综合评估

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电工电能新技术 2014年第9期33卷 41-47页

作者：彭卉梁文举张鑫李媛媛唐文左李亚军赵晋宋云亭邹舒吉平国网重庆市电力公司重庆400014 国网重庆市电力公司电力科学研究院重庆400000 中国电力科学研究院系统所北京100192

概率安全性与概率充裕性评估是组合电力系统可靠性研究的两个方面。由于建模的复杂性和巨大的计算量,二者在过去一直是分开研究的,这样造成所得的两类指标缺乏可比性和统一性。本文将二者协调统一在同一框架内,提出了一整套综合评估风... 详细信息

概率安全性与概率充裕性评估是组合电力系统可靠性研究的两个方面。由于建模的复杂性和巨大的计算量,二者在过去一直是分开研究的,这样造成所得的两类指标缺乏可比性和统一性。本文将二者协调统一在同一框架内,提出了一整套综合评估风险指标,建立了完整的基于序贯蒙特卡罗仿真的发输电合成系统可靠性综合评估新体系。算法结合自组织映射网络和合并相同系统状态加速计算技术,并在安全性评估中考虑了不对称故障等多种故障模式对可靠性指标的影响。对IEEE标准可靠性测试系统进行计算分析,结果表明所提算法可行有效。

关键词：概率安全性概率充裕性发输电合成系统可靠性评估蒙特卡罗仿真

新电力体制改革对电网企业投资运营及管理的影响

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粘接 2019年第12期40卷 163-165,188页

作者：周平崔荣陶凜梁文举郝晓晗余彪国网重庆市电力公司经济技术研究院重庆401120 国网重庆市电力公司重庆400014 四川华汇智研电力科技有限公司四川成都610041

随着中国近年来的不断崛起,中国发展呈现出一片红的局势,为保障我国经济的正常发展,电力消耗不断加强,我国电网企业可以说是起到了非常重要的作用。与此同时,为了跟上时代发展需要,更好满足社会发展需求,形成一套健全的电力体制对电力... 详细信息

随着中国近年来的不断崛起,中国发展呈现出一片红的局势,为保障我国经济的正常发展,电力消耗不断加强,我国电网企业可以说是起到了非常重要的作用。与此同时,为了跟上时代发展需要,更好满足社会发展需求,形成一套健全的电力体制对电力发展具有深远的意义。在这深远意义背后我们能解析出很多问题,主要体现在新电力体制会让电网各方面的触及利益的矛盾日益明显。与此同时电网诸多方面的问题会不断显现出来。福祸相依,机遇与挑战共存,文章将讨论新电力体制改革带来的影响,并提出了相应处理的措施。

关键词：新电力体制改革电网企业影响战略

Comparative study of the chitooligosaccharides effect on the proliferation inhibition and radiosensitization of three types of human gastric cancer cell line

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Asian Pacific Journal of Tropical Medicine 2016年第6期9卷 581-585页

作者： Yang Luo liang Deng Qiu-ju Deng Li wen Department of Gastroenterology the First Affiliated Hospital of Chongqing Medical University Department of Genetics Beijing Cancer Hospital Department of Cardiology First Affiliated Hospital of Chongqing Medical University

Objective:To observe the chitooligosaccharides(COS) effect on the proliferation inhibition and radiosensitivity of three types of human gastric cancer cell ***:CCK-8 assay was employed to obtain the inhibition ratio of COS on BGC823 cells,MKN45 cells and SGC7901 cells at 48 h after treatment and the proliferation-inhibition curve was drawn with the inhibition ratio of COS on three types of *** clonogenic assay was used to detect the cell viability of 0,1,2,4,6 and 8 Gy(6 dose grades) in RAY group and RAY+COS group after X-ray,and the cell survival curve was used to analyze the sensitization enhancement ratio of *** cytometry was employed to detect cell cycle and apoptosis rate in control group,RAY group and RAY+COS group after 48 h ***:COS inhibited the proliferation of three types of *** inhibition rate was positively correlated with the concentration of COS,and the susceptibility of MKN45 cells,SGC7901 cells and BGC823 cells to COS decreased in *** cell viability decreased gradually with the increasing radiation dose in RAY group and RAY+COS group(P<0.01).The cell viabilities of RAY+COS group were lower than those of RAY group at all the dose grades under X-ray exposure(P<0.01),and the sensitization enhancement ratios of COS on BGC823 cells,MKN45 cells and SGC7901 cells were 1.06,1.28 and 1.15 *** controlled trials,apoptosis rate and percentage in the G_2/M phase of three types of cells in RAY+COS group were higher than those in control group and RAY group,and percentage in the S phase and the G_0/G_1 phase in RAY+COS group were lower than those in the other two groups(P<0.01).Conclusions:COS can inhibit the proliferation of three types of human gastric cancer cells and enhance the radiosensitivity by inducing apoptosis and G_2/M phase arrest.

关键词： Chitooligosaccharides Gastric cancer Radiotherapy radiosensitization Cell cycle Apoptosis

Behaviour of cold-formed stainless steel beams at elevated temperatures

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第11期9卷 1507-1513页

作者： ju CHEN Wei-liang JIN Department of Civil Engineering Zhejiang University Hangzhou 310058 China

A study of the behaviour of constructional cold-formed stainless steel beams at elevated temperatures was conducted in this paper. An accurate finite element model (FEM) for stainless steel beams was developed using the finite element program ABAQUS. Stainless steel beams having different cross-sections were simulated in this study. The nonlinear FEM was verified against the experimental results. Generally, the developed FEM could accurately simulate the stainless steel beams. Based on the high temperature stainless steel material test results, a parametric study was carried out on stainless steel beams at elevated tem- peratures using the verified FEM. Both high strength stainless steel EN 1.4462 and normal strength stainless steel EN 1.4301 were considered. A total of 42 stainless steel beams were simulated in the parametric study. The effect of temperatures on the behaviour of stainless steel beams was investigated. In addition, a limiting temperature for stainless steel beams was also proposed.

关键词： Elevated temperatures Finite element model (FEM) Fire Stainless steel beams

Corner strength enhancement of high strength cold-formed steel at normal room and elevated temperatures

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第9期9卷 1251-1257页

作者： ju CHEN Wei-liang JIN Department of Civil Engineering Zhejiang University Hangzhou 310027 China

In this study, the suitability of current design methods for the 0.2% proof yield strength of the comer regions for high strength cold-formed steel at normal room temperature was investigated. The current standard predictions are generally accurate for outer comer specimen but conservative for inner comer specimen. Based on the experimental results, an analytical model to predict the comer strength of high strength cold-formed steel at normal room temperature was also proposed. The comparison indicated that the proposed model predicted well the comer strength of high strength cold-formed steel not only at normal room temperature but also at elevated temperatures. It is shown that the predictions obtained from the proposed model agree well with the test results. Generally the comer strength enhancement of high strength cold-formed steel decreases when the temperature increases.

关键词： Cold-formed steel Comer Elevated temperatures High strength steel Yield strength

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几种试剂对马尾松产脂量的影响

广西林业科学 2017年第4期46卷 436-439页

作者：张帅陈翠湖梁聚文黎伟军高全森吴坚梧州市林业技术推广站广西梧州543002 岑溪市紫胶林场广西岑溪543216 岑溪市林业局安平镇林业工作站广西岑溪543213

以21年生马尾松(Pinus massoniana)为材料,处理后/处理前单刀产脂量比值为评价指标,研究了不同酸碱度、植物矿质营养溶液和增脂剂对产脂量的影响。结果表明,除水处理外,酸碱度、增脂剂以及植物矿质营养溶液对马尾松产脂量影响极显著,马... 详细信息

以21年生马尾松(Pinus massoniana)为材料,处理后/处理前单刀产脂量比值为评价指标,研究了不同酸碱度、植物矿质营养溶液和增脂剂对产脂量的影响。结果表明,除水处理外,酸碱度、增脂剂以及植物矿质营养溶液对马尾松产脂量影响极显著,马尾松产脂量随NaOH溶液pH值递增呈上升趋势,产脂量随植物矿质营养液、增脂剂浓度递减呈递增的趋势,以NaOH溶液pH 10.5的处理效果最佳。

关键词：马尾松采脂增脂剂植物矿质营养液

Climatology of the Meteorological Factors Associated with Haze Events over Northern China and Their Potential Response to the Quasi-Biannual Oscillation

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Journal of Meteorological Research 2017年第5期31卷 852-864页

作者： ju liang Yaoguo TANG Department of Meteorology University of Reading Nanjing University of Information Science & Technology

An upswing in haze weather during autumn and winter has been observed over North and Northeast China in re- cent years, imposing adverse impacts upon local socioeconomic development and human health. However, such an increase in the occurrence of haze events and its association with natural climate variability and climate change are not well understood. To investigate the climatology of the meteorological factors associated with haze events and their natural variability, this study uses a meteorological pollution index called PLAM （Parameter Linking Air-qual- ity to Meteorological conditions） and ERA-Interim reanalysis data. The results suggest that high PLAM values tend to occur over southern parts of northem China, implying the weather conditions over this area are favorable for the occurrence of haze weather. For the period 1979-2014, the regional mean PLAM shows an overall increase across Beijing, Tianjin, and Hebei Province, and parts of Shanxi Province. Also, a periodicity of 28-34 months is found in the temporal variation of PLAM, which implies a potential association of PLAM with the stratospheric Quasi-Bian- nual Oscillation （QBO）. By using the QBO index during the autumn and winter seasons in the preceding year, an in- crease in PLAM is found for the westerly phases of the QBO, relative to the easterly phases. An upper-tropospheric warming is also found in the westerly phases, which can induce a stable stratification that favors the increase in PLAM across the midlatitudes. The modulations of large-scale environmental factors, including moist static stability, vertical velocity, and temperattu＇e advection, also act to enhance PLAM in the westerly phases. However, the baro- clinic term of moist potential vorticity at 700 hPa tends to decrease over the south, and an increase in low-level as- cent is found over the north. These factors can reduce PLAM and possibly limit the statistical significance of the in- creased PLAM in the westerly phases of the QBO.

关键词： haze events Parameter Linking Air-quality to Meteorological conditions (PLAM) Quasi-Biannual Os-cillation (QBO)

基于输配电价改革背景下电网企业资产管理研究

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粘接 2019年第12期40卷 151-154页

作者：梁文举罗旭张林俊樊晓伟郝晓晗王晶国网重庆市电力公司经济技术研究院重庆401120 国网重庆市电力公司重庆400014 四川华汇智研电力科技有限公司四川成都610041

随着我国实行了输配电价改革,一方面提高了我国电力市场的整个竞争环境,也让电力市场更加的公平公正;另一方面,输配电价改革也改变了电网企业的经营模式,给电网企业带来的巨大的挑战。面对新的环境,电网企业需要不断的加强自身管理,其... 详细信息

随着我国实行了输配电价改革,一方面提高了我国电力市场的整个竞争环境,也让电力市场更加的公平公正;另一方面,输配电价改革也改变了电网企业的经营模式,给电网企业带来的巨大的挑战。面对新的环境,电网企业需要不断的加强自身管理,其中资产管理作为重要的管理方面,直接关乎着企业的收入和利润,所以本文研究基于输配电价改革背景下电网企业资产管理。首先对输配电价改革这一背景进行分析,分析其改革的相关内容和改革的意义。输配电价改革能够营造更好的市场氛围,然而电网企业面对新的环境,一时难以适应,于是文章提出了新背景下电网企业资产管理存在的问题。最后通过分析电网企业资产管理,得出一些管理策略,该策略能够帮助到电网企业更快的适应新的环境。

关键词：输配电价改革:电网企业资产管理问题策略