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CNKI为你找到相关结果

Size matters-very high resolution permafrost simulatio...  CNKI文献

Observations and model studies indicate warming of frozen ground in many northern regions and as a consequence degradation of ice-and carbon-rich permafrost,with potentially far-reaching consequences...

Martin Stendel Sergei Marchenko... Proceedings of the IX International Symposium on Permaf... 2011-09-03 国际会议

关键词: permafrost / climate / change / Greenland

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Strength characteristics of tire-clay mixtures in free...  CNKI文献

Waste tires,rubbers,and plastic materials are normally produced in every society,entering the environment and causing serious problems.These problems may be somehow reduced by finding applications fo...

Mahya Roustaei Mahmoud Ghazavi... Proceedings of the IX International Symposium on Permaf... 2011-09-03 国际会议

关键词: freeze / thaw / cycles / tire

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Pressuremeter test in warm and ice-rich permafrost  CNKI文献

In order to investigate the in-situ mechanical behavior of warm and ice-rich frozen soils,a series of pressuremeter tests were carried out in permafrost regions on the Qinghai-Tibetan Plateau.Based o...

Hu ZHANG Jianming ZHANG... Proceedings of the IX International Symposium on Permaf... 2011-09-03 国际会议

关键词: Qinghai-Tibetan / Plateau / pressuremeter / test

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The impact of freeze-thaw cycles on the dynamic charac...  CNKI文献

Based on the test result of Qinghai-Tibet clay before and after freeze-thaw cycles under long-time cyclic dynamic loading,following conclusion can be drawn.The change rule of the accumulative strain ...

Shu-ping ZHAO Wei MA... Proceedings of the IX International Symposium on Permaf... 2011-09-03 国际会议

关键词: freeze-thaw / cycles / long-time / cyclic

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Permafrost investigation in Tibetan Plateau using elec...  CNKI文献

Geophysics method is one of the important ways to survey the permafrost,therefore,in order to understand the applied scope and prospect of the electrical resistivity tomography in Tibetan Plateau per...

Yanhui YOU Jun HU... Proceedings of the IX International Symposium on Permaf... 2011-09-03 国际会议

关键词: electrical / resistivity / tomography / permafrost

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Research on the thermal stability of frozen soil emban...  CNKI文献

The Chaidaer-muli Railway(abbreviated as Chaimu Railway)is located in the northeast of Qinghai-Tibet Plateau,where is covered widely by the permafrost in the mid-latitude area.The railway is 142.04 k...

Xianfu DONG Liping SUN... Proceedings of the IX International Symposium on Permaf... 2011-09-03 国际会议

关键词: heat / pipe / convection / embankment

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Physical changes of five types of rock in the Qinghai-...  CNKI文献

Rocks,including the clastic rock,mudstone,sandstone,granite,andesite,were used to the protecting-slope and berms of the Qinghai-Tibet Railway,as the rock layers have good effect on protecting permafr...

Fujun NIU Hua LIU... Proceedings of the IX International Symposium on Permaf... 2011-09-03 国际会议

关键词: freeze-thaw / ultrasonic / wave / physical

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Analysis on the potential problems of constructing hig...  CNKI文献

The countermeasures for some possible problems which may arise in the construction of highways or in the application of some typical engineering measures in permafrost regions are analyzed,within the...

Qihao YU Jun HU... Proceedings of the IX International Symposium on Permaf... 2011-09-03 国际会议

关键词: permafrost / high / grade / highway

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Methodology of study on freeze-thaw cycling induced ch...  CNKI文献

Freeze-thaw action is an important topic in cold regions engineering,which results in moisture and solute migration and re-distribution,thus changes in physical and mechanical properties.On the basis...

Wei MA Lili FANG... Proceedings of the IX International Symposium on Permaf... 2011-09-03 国际会议

关键词: review / freeze-thaw / cycles / engineering

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Study on the failure mechanism of roadbed with saline ...  CNKI文献

Saline soil is widely distributed in the arid and semiarid regions of northwest China.Due to the frost heave of seasonally frozen soil,salt expansion and thaw settlement a great deal of diseases occu...

Hui BING Shu-ping ZHAO Proceedings of the IX International Symposium on Permaf... 2011-09-03 国际会议

关键词: saline / soil / cyclical / freeze-thaw

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Radiation effect analysis of the awning measure on the...  CNKI文献

Because the higher elevation and better atmospheric transparency,the Qinghai-Tibet plateau have stronger radiation than other regions,which can make the ground surface temperature daily variation cha...

Wenjie FENG Wei MA... Proceedings of the IX International Symposium on Permaf... 2011-09-03 国际会议

关键词: cold / regions / embankment / shading

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Hysteretic energy and temperature behavior of frozen s...  CNKI文献

Based on the results from a series of testing with temperature monitored,using embedded thermistor temperature sensor in frozen specimen during cyclic compressive loading,it is known that,when the en...

Shujuan ZHANG Zhizhong SUN... Proceedings of the IX International Symposium on Permaf... 2011-09-03 国际会议

关键词: frozen / soil / cyclic / loading

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The spatial distribution of ground ice and dry density...  CNKI文献

Ground ice is an important element of frozen soil,and the study of ground ice distribution in permafrost is extremely important for geocryological research.Ice content variations in frozen soil influ...

Chengsong YANG Guodong CHENG... Proceedings of the IX International Symposium on Permaf... 2011-09-03 国际会议

关键词: ground / ice / dry / density

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APPLICATION OF CT TESTING TECHNOLOGY IN EVALUATING THE...  CNKI文献

Some conclusion can be drawn from the CT test result of silty clay samples,which are made by little-pressing specimen-preparing method.First,the surveyor's mass absorbing coefficient of soil grai...

Zhao Shuping Zhen Jianfeng... Proceedings of the seventh International Symposium on P... 2007-11-21 国际会议

关键词: than / APPLICATION / OF / CT

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Influences of vegetation degradation on the ground moi...  CNKI文献

In permafrost regions on the Qinghai-Tibet Plateau,the vegetation degradation would change the surface energy balance and consequently influence the moisture and thermal regimes in the active layer s...

Junfeng WANG Qingbai WU Proceedings of the IX International Symposium on Permaf... 2011-09-03 国际会议

关键词: wet / meadow / degradation / active

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LABORATORY STUDY ON COOLING EFFECT OF CRUSHEDROCK EMBA...  CNKI文献

Crushed-rock embankment has been utilized as a method for avoiding thaw settlement of roadway in warm permafrost regions.Its cooling effect has been recognized.However,infield,the crushed-rock embank...

Mingyi Zhang Yuanming Lai... Proceedings of the seventh International Symposium on P... 2007-11-21 国际会议

关键词: rock / LABORATORY / STUDY / ON

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Vehicles loading effects on thawing embankment  CNKI文献

Vehicle loading is always a serious threat to embankment engineering stability,especially to the thawing ice rich embankment.Anew numerical simulation method was proposed by combining large strain th...

Xiaoliang YAO Jinlin QI Proceedings of the IX International Symposium on Permaf... 2011-09-03 国际会议

关键词: vehicles / loading / ice / rich

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血循环衰竭时应用Strophanthin和Corglycon治疗酸碱平衡变化  CNKI文献

作者曾对50例血循环衰竭患者采用强心配糖体Strophantin及Corglycon治疗后进行酸硷平衡变化的研究。其中5例动脉硬化生心脏硬化,其余44例系风湿病和风湿性心瓣膜病(风湿活动期51例,发作间期13例)。按心力衰竭分类Ⅰ度...

А.И.Кабаков 邬其俊 《山西医学杂志》 1963年01期 期刊

关键词: 血循环 / Corglycon / Strophanthin / 强心配糖体

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