Results 81 to 90 of about 1,022,236 (123)

用混合净化剂从油田污水中浮选分离油类及杂质的研究

open access: yesGongye shui chuli, 1985
一、引言油田污水是油田回注水的重要来源之一。它由原油脱出水、洗井水和联合站内其它污水所组成,具有含油量高、含硫酸还原菌高、含有机色素及机杂(机械杂质 ...
王键吉   +4 more
doaj  

The response of well-aquifer systems to barometric loading

open access: yes, 2013
定量研究了井孔储存量对气压波动引起的承压含水层井水水位波动的抑制和滞后效应,建立了相应的数学模型,并推出了其解析解,给出了承压含水层井孔水位波动与气压波动的定量关系。分析发现,对于常见承压含水层完整井来说,当其井径大于0.1 m时,井孔储存量对气压波动引起的井水水位波动具有明显的控制和滞后效应。随着井径的增大或者含水层水力扩散系数的减小,气压波动引起的井水水位的波动减弱。当井径无穷大或含水层水力扩散系数无穷小时,井水水位不再随气压波动;反之,当井径无限小或含水层水力扩散系数无穷大时 ...
李海龙, 柳富田, 宋金颖, 万力
core   +1 more source

[Guangdong consensus on integrated Chinese and Western medicine management of prolonged disorders of consciousness]. [PDF]

open access: yesNan Fang Yi Ke Da Xue Xue Bao
Neurocritical Care Committee of Guangdong Provincial Association of Chinese Medicine.
europepmc   +1 more source

[Recent advances in the development and application of effervescence-assisted microextraction techniques]. [PDF]

open access: yesSe Pu, 2023
Ye HZ   +7 more
europepmc   +1 more source

[Analysis of liver histological characteristics and clinically related factors in patients with inactive HBsAg carriers]. [PDF]

open access: yesZhonghua Gan Zang Bing Za Zhi
Zhang XY   +12 more
europepmc   +1 more source

[Characteristics of bone marrow compensatory erythropoiesis in hereditary spherocytosis]. [PDF]

open access: yesZhonghua Xue Ye Xue Za Zhi, 2022
Li XX   +15 more
europepmc   +1 more source

[The value of HRCT in predicting cerebrospinal fluid gusher during cochlear implantation]. [PDF]

open access: yesLin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Liu Z, Lin X, Huang H, Dong G, Wu P.
europepmc   +1 more source

Groundwater-surface water interactions and resilience to hydrological extremes in a data-sparse arid transboundary river basin: Insights from collaborative groundwater modelling. [PDF]

open access: yesHydrogeol J
Mustafa SMT   +18 more
europepmc   +1 more source

波流联合作用下隔水管响应及水下井口受力

open access: yes
为确保在波流联合作用下的系统稳定性,在实际工程设计中需要充分考虑隔水管-水下井口系统的动力响应。针对东海某典型海域的复杂环境条件,考虑隔水管与井口结构间的力学特性,建立隔水管-水下井口系统的有限元仿真模型。重点关注不同环境载荷及顶张力下的结构应力、变形和井口受力的变化,并探讨井口安装偏角对结构稳定性的影响。结果表明:在不同环境载荷下隔水管对顶张力的敏感范围存在差异,在一定范围内增大顶张力可有效提升结构稳定性;水下井口受力与井口装置安装方式有关 ...
徐万海   +4 more
core   +2 more sources

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