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Search Results: 1 - 10 of 177571 matches for " 陈月勋 "
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大庆油田油水井套管侧挂串状阳极防腐模拟实验研究
李福军,任成峰,张建军,
腐蚀科学与防护技术 , 2007,
Abstract: 针对大庆油田油水井浅表层套管腐蚀外漏逐年加剧的问题,对于正常生产的油水井套管的防腐保护提出套管外壁侧埋深井牺牲阳极串的防腐蚀技术.通过室内模拟实验,发现在水电阻率和阴-阳极面积比近似相同的情况下,深埋阳极对套管的保护效果明显优于浅埋阳极,阳极以串、并联组合方式连接有较大的电流输出和较好的电位分布.结果表明,阳极以深埋方式为宜,阳极埋入深度在3000cm~5000cm左右为最佳位置,阴阳极间最佳距离为900cm.
大庆油田油水井套管手镯阳极防腐室内模拟实验
,朱殿瑞,李福军,李晓川
腐蚀科学与防护技术 , 2007,
Abstract: 提出了适合大庆地区的套管防腐技术-手镯阳极套管防腐技术,通过室内模拟实验确定手镯式阳极的最佳组合方式.结果表明,每只手镯式阳极极化半径超过9m,极化场呈辐射状.在浅表层100m内每一根套管固定一个手镯式阳极是最佳的组合方式;套管保护电位均负于-850mV(SCE),套管保护电流可极化到地下100m.
采用原子分解法的带并联补偿线路单相自适应重合闸
贾晶晶,,龚庆武,,关钦,姝磊
电力系统自动化 , 2013, DOI: 10.7500/AEPS201110030
Abstract: 带并联补偿输电线路单相瞬时性故障时,故障相恢复电压阶段会同时存在工频分量和低频分量,从而形成拍频现象。目前,基于上述原理的自适应重合闸判据抗干扰能力不强,且不能确定准确的熄弧时间。对此,文中采用一种新的信号处理方法——原子稀疏分解法分析非线性故障信号,以提取瞬时性故障时恢复电压阶段存在的低频分量,进而对故障性质作出判别;同时,原子稀疏分解法较强的时域和频域分析能力可以准确地确定故障熄弧时刻,为线路断路器的重合时刻整定提供依据。仿真实验验证了所述方法能够有效提高自适应重合闸性能。
减小齿轮传动误差波动的渐开线直齿轮齿廓修形研究
,张策,熊光彤,,黄永强
天津大学学报(自然科学与工程技术版) , 2001,
Abstract: 以理论渐开线直齿轮修形减振为目的,分析减小齿轮传动误差波动,啮合齿对齿廓综合修形参数应满足的几何条件;给出恒定设计载荷条件下,保持齿轮传动误差为定值齿廓修形参数的计算方法;动态计算结果表明,用该方法所获得的修形齿轮具有较好的减振效果.
中国企业危机沟通失败典型案例研究
Failure Case Study of the China Enterprise in Crisis Communication
 [PDF]

李宏,
Modern Management (MM) , 2013, DOI: 10.12677/MM.2013.31005
Abstract:
随着中国现代企业发展得日益成熟和信息时代的到来,危机沟通的重要性逐渐在企业管理中得到提升。本文从中国企业危机沟通失败的典型案例出发,具体分析了三鹿、双汇这两家中国企业在危机前、危机中、危机后所做的沟通措施,结合其危机不同阶段特征与解决危机手段的组合,总结出其在危机沟通中的缺失以及缺失的原因,得出相关启示,希望通过这些分析能够使企业在未来面对危机的过程中少走弯路。
With the Chinese modern enterprise more and more mature, the place of crisis consciousness in the enterprise management is more important. This paper starting with a few typical cases of failure in crisis communication, especially analysis two enterprises: Shuanghui, Sanlu. Analysis the measures they take be-fore the crisis, during the crisis and after the crisis, find the problem in crisis communication and the reason why they failure in the crisis communication, finally we will summarize experience from the case and through this experience we will find short cut to success in crisis communication.
EXPERIMENAL SIMULATION OF EFFECTIVENESS OF CORROSION CONTROL BY SERIAL ANODE FOR OIL-WATER WELLS IN DAQING OILFIELD
大庆油田油水井套管侧挂串状阳极防腐模拟实验研究

LI Fu-jun,REN Cheng-feng,ZHANG Jian-jun,CHEN Yue-xun,
李福军
,任成峰,张建军,

腐蚀科学与防护技术 , 2007,
Abstract: In view of the fact that corrosion induced leakage of casings gets much severe year by year of oil - water wells in Daqing oilfield, we put forward the anticorrosion methodology of sacrifice anodes, and the technology is the serial anodes are buried on the flank of the working casing of oil-water wells. Through simulation experiment in the laboratory, it follows that in case the water electric resistivity is appoximately egual to the cathode-anode area ratio, anodes should be buried underground with a depth of 3000 cm-5000 cm, the way of anodes combination is connection in series-parallel, and it would come into being the bigger electric current output and the good potential distribution. The suitable spacing between of anode and cathode ranges around 900 cm.
蒙其古尔铀矿床含矿目的层砂体强烈高岭石化成因初探
刘红旭,刘章,张晓,所世鑫,曹清艳,,虞航,,王永
地质论评 , 2013,
Abstract:
富铬灵芝发酵米谷粉之抗氧化和降血糖研究
Antioxidant and Hypoglycemic Effect of Chromium Enriched Ganoderma lucidum Fermented Rice Flour
 [PDF]

林伯, 淑德, 辉煌
Hans Journal of Food and Nutrition Science (HJFNS) , 2013, DOI: 10.12677/HJFNS.2013.24011
Abstract:
灵芝是华人重要的药用和食用菇蕈类,灵芝最主要的活性成分为多醣和三萜,具有抗氧化、抗肝炎、降血糖、抗发炎和降胆固醇的活性;三价铬对于糖尿病有血糖控制与葡萄糖耐受性有改善的作用。添加不同三价铬浓度(0, 100 and 200 ppm)于水分含量为50%的糙米基质中,并在30℃下,灵芝发酵14天,进一步分析抗氧化成分和微波萃取物的降血糖效果。添加200 ppm的三价铬会有较佳的多醣和总多酚含量、螯合亚铁能力及还原力。分别以0%25%50%75%95%酒精以300 W微波萃取富铬灵芝发酵糙米产物10 min,其中25%酒精比例可以获得较多的有效成分,其中粗多醣含量19.75%,粗三萜0.34%,总铬0.0026%。在以小鼠动物模式分别以正常组、糖尿病(STZ)对照组、糖尿病管喂50 ppm灵芝萃取物四周,记录采水量及采食量,并每周测量空腹血糖,在饮食及饮水部分则是在第二周及第三周开始即有显著降低,在四周后可以发现空腹血糖值有显著降低。
>Ganoderma lucidum is one of the most important Chinese medicinal and edible mushrooms. The most im- portant active components of G. lucidum were polysaccharides and triterpenoids. They have been proven to possess many pharmacological functions such as antioxidant, anti-hepatitis, hypoglycemic activity, anti-inflammation and hy- pocholesterolemia. Trivalent chromium for
INDOOR EXPERIMENTAL SIMULATION OF ANTICORROSION PERFORMANCE OF BRACELET ANODE FOR OIL-WATER WELLS IN DAQING OILFIELD
大庆油田油水井套管手镯阳极防腐室内模拟实验

CHEN Yue-xun,ZHU Dian-rui,LI Fu-jun,LI Xiao-chuan,
,朱殿瑞,李福军,李晓川

腐蚀科学与防护技术 , 2007,
Abstract: 提出了适合大庆地区的套管防腐技术-手镯阳极套管防腐技术,通过室内模拟实验确定手镯式阳极的最佳组合方式.结果表明,每只手镯式阳极极化半径超过9 m,极化场呈辐射状.在浅表层100 m内每一根套管固定一个手镯式阳极是最佳的组合方式;套管保护电位均负于-850 mV(SCE),套管保护电流可极化到地下100 m.
一种用于非洲猪瘟病毒检测的pcr方法
杨吉飞,关贵全,刘志杰,,李有全,马米玲,刘爱红,任巧云,,苟惠天,杜鹏飞,罗建,殷宏
牲畜兽医学报 , 2011,
Abstract: ?基于非洲猪瘟病毒(asfv)vp72基因设计引物,建立一种检测非洲猪瘟病毒的pcr方法。应用本研究所建立的方法与oie参考的方法进行比较,并对参考实验室提供的非洲猪瘟病毒17个分离株的基因组以及本实验室收集的野外样品进行检测。结果显示:本研究设计的引物具有良好的特异性,与猪的其他病原没有交叉反应;其敏感性与oie参考的方法相当;所建立的pcr方法能够成功扩增非洲猪瘟病毒17个分离株的基因组,野外样品检测均为阴性。根据上述研究结果,本研究所建立的方法具有很好的应用性,能够用于非洲猪瘟疫病的诊断以及防控。
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