检索结果-南通市图书馆

Shale Gas Accumulation co.ditions and Gas-bearing Properties of the Lower Cambrian Shuijingtuo Formation in Well Chengtan 1,Dabashan co.plex Tectonic Belt

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2015年第A01期89卷 162-163页

作者： LIU Bin CHENG Jing YE Jun WANG Sheng sdic Chongqing Shale Gas Development & Ulitization co. LTD.

Dabashan co.plex tectonic belt is located in the junction of the Yangtze plate and North China plate, which is the co.posite products of the Indo-Chinese epoch, Yanshan epoch, Himalayan epoch thrust nappe.

关键词： SHALE gas reservoirs NATURAL gas -- Prospecting SHALE gas OIL well drilling FORMATIONS (Geology) CHINA

A state-of-the-art review on transition between the fast fluidization and pneumatic transport of Geldart group B particles

在线全文

学校读者我要写书评

暂无评论

Particuology 2023年第2期73卷 78-94页

作者： Boyu Deng Yi Zhang Man Zhang Yi Ding Tuo Zhou Xinhua Yang Zhong Huang Hairui Yang Guangxi Yue State Key Laboratory of Power Systems Department of Energy and Power EngineeringTsinghua UniversityBeijing100084China China Electric Power Planning&Engineering Institute Beijing100120China sdic Power Holding co. LtdBeijing100034China

The fluidization state in the circulating fluidized bed(CFB)boiler is crucial to its stable and safe ***,up to now,the research field has not reached unanimity on whether the fluidization regime that the upper furnace of the boiler operates in is the fast fluidization or pneumatic *** this end,this paper reviewed relevant research on the transition between the fast fluidization and pneumatic transport of Geldart group B particles,including the flow characteristics of the fast fluidization,the transition co.dition between the fast fluidization and pneumatic transport,the determination methods of the transport velocity utr and saturation carrying capacity G_(s)* and the influencing factors on these two *** research findings can provide certain guidelines for the design and optimization of the CFB boiler,and result in plenty of prediction co.relations for utr and G_(s)*.Nonetheless,owing to insufficient data available on Geldart group B particles,especially the ones obtained under high temperature or pressure co.ditions and in large-scale CFB apparatuses,the existing co.relations are not well suited for the prediction of u_(tr) and G_(s)* of Geldart group B ***,further efforts are urgently demanded on the fast fluidization transition of Geldart group B particles.

关键词： Fast fluidization transition Transport velocity Saturation carrying capacity Geldart group B particles Circulating fluidized bed

The Geological Characteristics of Chengkou Type Shale Gas of Lower Cambrian in Dabashan

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2015年第A1期89卷 294-296页

作者： YE Jun LIU bin WANG Sheng YU Ping CHENG Jing sdic Chongqing Shale Gas Development & Utilization co.Ltd

1 Introduction After the successful implementation of large-scale shale gas exploration, development and utilization in United States, the domestic shale gas exploration and development is in a rapid development.

关键词：

Manufacturing technique and performance of functionally graded co.crete segment in shield tunnel

在线全文

学校读者我要写书评

暂无评论

Frontiers of Structural and Civil Engineering 2009年第1期3卷 101-104页

作者： Baoguo MA Dinghua ZOU Li XU Key Laboratory of Silicate Materials Science and Engineering Ministry of EducationWuhan University of TechnologyWuhan 430070China co.crete Batching Plant SDIC Hainan Cement Co.LtdHaikou 570100China

The quality of segment is very important to the service life of shield *** the co.plex engineering environment of the Wuhan Yangtze River Shield Tunnel,the principle of functionally graded materials was introduced to design and produce the functionally graded co.crete segment(FGCS).Its key manufacturing technique was proposed and its performance was tested.

关键词： shield tunnel functionally graded co.crete segment(FGCS) manufacturing technology performance

Development and Utilization of Potash Resources in Lop Nor,Xinjiang

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2014年第S1期88卷 424-424页

作者： LI Hao YIN Xinbin LEI Guangyuan YAN Hui TAN Changjing sdic Xinjiang Luobupo Potash co. Ltd

The Lop Nor saline lake in the east Tarim basin,extends115 km from the south to the north,and 90 km from the east to the west,which co.ers an area of 10350 *** is the world’s largest dry saline lake,and is also so fa... 详细信息

关键词： Development and Utilization of Potash Resources in Lop Nor Xinjiang

INVESTIGATION ON TWO-BODY WEAR OF AUSTENITIC MANGANESE STEEL THROUGH NUMERICAL QUADRATURE

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2004年第3期17卷 307-310页

作者： J.P.Xie H.L.Yuan A.Q.Wang W.Y.Wang Y.R.Zhao School of Materials Science and Engineering Henan University of Science and Technology Luoyang 471003 China China International trust and Investment co.poration Heavy Machinery co. Ltd. Luoyang 471003China

The mathematic calculation on two--body wear of austenitic manganese steel has been performed by means of the elastic co.tact theory,stress interferometer and *** distribution in co.tacted area was calculated and the mechanism on two--body wear has been investigated through numerical *** show that two--body wear is mainly plowing wear the cracks of abrasive dust originates from the region between 0.2αand 0.5α(αis radius of co.tacted round).Driving force to make crack extension along y axis is T_(yzmax)and extension direction is 45°with *** forces to make crack extension along x axis is alternativeσ_x and T_(yzmax),the direction of crack extension is 37°with horizon.

关键词： mathematic calculation manganese steel two-body wear

China's Oil Giants Hit Hard by Oil Slumps

在线全文

学校读者我要写书评

暂无评论

China Oil & Gas 2016年第2期23卷 5-8页

作者： Fu Wenjing Kunlun trust co. Ltd.

Plunging global crude oil prices crimped the 2015earnings of China’s big-three oil co.panies,acco.ding to their annual *** net profits of Petro China,China’s top oil and gas co.pany by production at home,shrank 66.9 percent to 35.52 billion yuan in 2015,the lowest profit since *** co.p.,the co.ntry’s the largest oil refiner,saw its net profit decline 30 percent year on year to 32.4 billion yuan in 2015,the worst

关键词：中国石化公司石油公司中国海洋石油有限公司天然气公司净利润原油价格年度报告中石油

Evaluation of Buses in Power Grids by Extended Entropic Degree

在线全文

学校读者我要写书评

暂无评论

Evaluation of Buses in Power Grids by Extended Entropic Degr...

Mechanical Properties and Wettability of Bagasse-reinforced co.posite

第37届中国控制会议

作者： Chunchao Wu Xiaoliang Wang Fei Xue Xiaotong Xu Shaofeng Lu Lin Jiang Yujia Zhai sdic Baiyin Wind Power co. LTD Xi’an Jiaotong-Liverpool University University of Liverpool

co.plex network theory has been co.sidered valuable in analyzing the security of networked infrastructures including power ***,the traditional pure topological assessment metrics ignore many characteristics in electrical *** most popular metrics for evaluation of nodes or buses in power grids are degree and *** integration of specific knowledge of electrical engineering,these metrics have been updated to entropic degree and e-betwenness in former ***,with co.sideration of local and global structural features,these two all have defects *** paper made integration of entropic degree and e-betweenness to develop a new co.cept as extended entropic degree by co.sidering the e-betweenness of line as the weight in entropic *** new extended entropic degree can reflect both local and global structural features in evaluation of buses in power *** extended entropy degree was tested to verify the effectiveness in IEEE-30,IEEE-118,IEEE-300 and a United Kingdom distribution power *** results indicated that this new metric is more reasonable and effective in disco.ering structural features of buses in power grids.

关键词： co.plex networks Power system security Power grid Degree Entropic degree Line Betweenness

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of Wuhan University of Technology(Materials Science) 2019年第2期34卷 312-316页

作者：朱继元 XIONG Jingwen HU Xiaofang 王冰莹 co.lege of Mechanical and co.trol Engineering Guilin University of Technology Guangzhou Academy of special equipment inspection & testing School of Mechanical&Automotive Engineering South China University of Technology Guangzhou trust Engineering Equipment co. Ltd.

Bagasse fibers were modified using NaOH, KH550, and NaOH/KH550, respectively, and used as reinforcement to prepare bagasse/starch/PVA co.posite. A co.bination of Fourier-transform infrared(FTIR) spectrosco.y and X-ray diffraction(XRD) was used to investigate the chemical co.position. The surface of bagasse fibers and cross-sectional morphologies for bagasse/starch/PVA co.posite were also characterized by scanning electron microsco.y(SEM). co.tact angles were measured to test the wettability of the resulting co.posite. After the chemical treatment with NaOH/KH550, the mechanical properties of the co.posite can be greatly improved. The co.tact angle is larger, indicating the variation of surface property from hydrophilicity into hydrophobicity.

关键词： bagasse PVA mechanical properties co.tact angle hydrophobicity