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Simulation Study on the Contact Scouring Development Between Underground Layers

Chen Jiansheng,Liu Jiangang,Jiao Yuehong

Strategic Study of CAE 2003, Volume 5, Issue 7,   Pages 33-39

Abstract: It will develope rapidly in the direction perpendicular to tho bank, and even forms a concentrate leakagepassage.

Keywords： contact scouring     starting speed     flow net     concentrate leakage passage    

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Numerical and experimental analyses of methane leakage in shield tunnel

Frontiers of Structural and Civil Engineering   Pages 1011-1020 doi: 10.1007/s11709-023-0956-z

Abstract: Tunnels constructed in gas-bearing strata are affected by the potential leakage of harmful gases, suchmethane emission was diluted, and the methane accumulation was only observed in the area near the methane leakageIn addition, laboratory tests on methane leakage through segment joints were performed.The results show that the leakage process can be divided into “rapid leakage” and “slight leakage”, dependingon the leakage pressure and the state of joint deformation.

Keywords： shield tunnel     harmful gas leakage     numerical analysis     laboratory test    

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Numerical study of internal flow field and flow passage improvement of an inlet particle separator

Florian PAOLI, Tong WANG

Frontiers in Energy 2011, Volume 5, Issue 4,   Pages 386-397 doi: 10.1007/s11708-011-0156-8

Abstract: 9 × 10 ) and byflow ratios (from 10% to 20%), the present study has proposed to improve the flow passageTherefore, the profile of streamlines along the original passage has been considered.Then the flow passage improvement method has focused on the separation area.As a result, the numerical calculations demonstrate that the flow passage improvement method applied

Keywords： streamlines     pressure losses     flow passage improvement     inlet particle separator (IPS)    

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Nitrogen removal performance of municipal reverse osmosis concentrate with low C/N ratio by membrane-aerated

Xiao Quan, Kai Huang, Mei Li, Meichao Lan, Baoan Li

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 6, doi: 10.1007/s11783-018-1047-6

Abstract:

MABR exhibits excellent TN removal performance for treating ROC with low C/N ratio.

Operating conditions should be properly controlled to achieve optimal TN removal.

Denitrifying bacteria and NOB are proved notably inhibited by high salinity stress.

The TN removal rate remains over 70% when the NaCl addition amount is below 20 g/L.

Keywords： Membrane-aerated biofilm reactor (MABR)     Salinity     Total nitrogen     Reverse osmosis concentrate    

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Effects of leakage and friction on the miniaturization of a Wankel compressor

Yilin ZHANG, Wen WANG

Frontiers in Energy 2011, Volume 5, Issue 1,   Pages 83-92 doi: 10.1007/s11708-010-0125-7

Abstract: The discussion is related to the effect of leakage and friction on the design limit (cooling capacityIn the simulation, the main leakage comes from the gaps between the rotor and the endplates as well asThe decreasing cooling capacity of the meso Wankel compressor increases the proportion of leakage to

Keywords： meso-scale     Wankel compressor     leakage     friction    

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strong>Forward osmosis coupled with lime-soda ash softening for volume minimization of reverse osmosis concentrate

Jiandong Lu, Shijie You, Xiuheng Wang

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 1, doi: 10.1007/s11783-020-1301-6

Abstract: The RO concentrate (ROC) produced from the coal chemical industry (CCI) generally contains refractory

Keywords： Coal chemical industry     Forward osmosis     Chemical softening     Reverse osmosis concentrate    

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Test investigation on hydraulic losses in the discharge passage of an axial-flow pump

QIU Baoyun, CAO Haihong, JIANG Wei, GAO Zhaohui, WANG Fei

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 50-56 doi: 10.1007/s11465-007-0008-8

Abstract: In a discharge passage with a guide blade discharge circulation and secondary flow because of bend pipe, the flow in a 1-channel discharge passage of an axial flow pump is a complicated spiral flow.For a 2-channel passage, the discharge in the left channel is bigger than that in the right, and thepassage hydraulic losses are abnormal.As for the 1-channel passage, the axial-flow pump outlet circulation is usually too big; the passage
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Cohesive zone model-based analyses of localized leakage of segmentally lined tunnels

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 503-521 doi: 10.1007/s11709-023-0927-4

Abstract: This paper presents a novel approach for simulating the localized leakage behavior of segmentally linedThe proposed approach not only simulates localized leakage at the lining segment, but also captures thebehavior, stratum seepage field, and leakage-induced mechanical response of the tunnel lining.the leakage point and slight inward deformation at its diametrically opposite side.The seepage field depends on both the number and location of the leakage zones.

Keywords： segmentally lined tunnel     localized leakage     cohesive element     hydraulic behavior     numerical modeling    

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Long-term settlement behavior of ground around shield tunnel due to leakage of water in soft deposit

Huaina WU, Yeshuang XU, Shui-long SHEN, Jin-chun CHAI

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 2,   Pages 194-198 doi: 10.1007/s11709-011-0105-y

Abstract: This paper aims to analyze the impact of the leakage of groundwater through segments on the long-term

Keywords： lining deficit     leakage of water     shield tunnel     settlement     soft deposit    

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A building unit decomposition model for energy leakage by infrared thermography image analysis

Yan SU, Fangjun HONG, Lianjie SHU

Frontiers in Energy 2020, Volume 14, Issue 4,   Pages 901-921 doi: 10.1007/s11708-020-0679-y

Abstract: A quantitative energy leakage model was developed based on the thermography image data measured for bothThe uncertainties of the predicted total building energy leakage are about 14.7%, 12.8%, 12.4%, and 15.8%The typical daily thermal energy leakage value in winter is the highest among the four seasons.The present decomposition model for energy leakage is expected to provide a practical tool for quantitativeanalysis of energy leakage of buildings.

Keywords： heat conductivity     heat coefficient     heat &fllig     ux     infrared thermography     thermal image    

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Meeting Future Challenge in Copper Industry——Considerations on Treatment of Copper Sulfide Concentrate

Zhu Zuze

Strategic Study of CAE 2000, Volume 2, Issue 2,   Pages 87-90

Abstract:

A brief review of the advance of copper smelting technology and the price fluctuations of copper products indicate that the competition of copper market depends upon the production cost relying on metallurgy technology. In order to ensure the smooth development of the copper industry in China and win competition in the world, we must persist in domestic r & D and incorporation with foreign technology for copper smelting. This paper commentes on the deficiencies of intensified oxidizing-PS convetring-pyrorefining-electrolysis processes and analyzes the feasibility and basises of combined pyrometallurgical and hydrometallurgical method. The new combined process route will be more advantageous in future competition.

Keywords： Copper industry     copper sulfide concentrate     low cost    

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Aggravation of membrane fouling and methane leakage by a three-phase separator in an external anaerobic

Chao Pang, Chunhua He, Zhenhu Hu, Shoujun Yuan, Wei Wang

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 4, doi: 10.1007/s11783-019-1131-6

Abstract: itemcontent>

The existence of three-phase separator aggravated methane leakage

Keywords： Anaerobic membrane bioreactor     Three-phase separator     Membrane fouling     Methane leakage     Sludge property    

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Oil and gas strategy passage construction and management innovation of CNPCI

Huang Weihe

Strategic Study of CAE 2012, Volume 14, Issue 12,   Pages 19-24

Abstract:

The oil and gas pipeline system is the artery of energy for the national economy development. With China’s increasing dependence on foreign oil and gas, accessibility of oil and gas strategic passages and availability of safe and stable energy supply are the urgent affairs. In the construction process of the onshore oil and gas strategic channels, by the independent innovation based on the “1+ N” cooperative model, the pipeline design, construction, equipment localization and high-pour-point and viscous crude oil transportation and other key technologies have been formed, and the large oil and gas pipeline networks with the scale of a total length of 6×104 km, transport capacity of 1.7×108 t of oil, transmission capacity of 1.4×1011 m3 of natural gas have been built. During the operation and management of the large pipeline networks, through the establishment of e-SAME security consistency systems, the operation and management organization, asset integrity management, market guarantee and emergency maintenance and other subsystems have been developed, and the enterprise security goals have been ensured.

Keywords： oil and gas pipeline     strategy channels     construction     management    

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Dynamic power-gating for leakage power reduction in FPGAs Research Article

Hadi JAHANIRAD,h.jahanirad@uok.ac.ir

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 4,   Pages 582-598 doi: 10.1631/FITEE.2200084

Abstract: The proposed low-leakage FPGA architecture is compared with state-of-the-art architectures by implementingMoreover, the total power consumption (leakage+dynamic power consumption) is reduced by more than 15%

Keywords： Field programmable gate array (FPGA)     Leakage power     Power-gating     Transistor-level circuit design    

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Leakage location system for oil pipeline on basis of stress wave detection

WANG Bangfeng, CHEN Renwen

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 3,   Pages 307-312 doi: 10.1007/s11465-008-0047-9

Abstract: accuracy ratio for the holing alarm is more than 90%, and the time that the system takes to respond to the leakage
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Title Author Date Type Operation

Simulation Study on the Contact Scouring Development Between Underground Layers

Chen Jiansheng,Liu Jiangang,Jiao Yuehong

Journal Article

Numerical and experimental analyses of methane leakage in shield tunnel

Journal Article

Numerical study of internal flow field and flow passage improvement of an inlet particle separator

Florian PAOLI, Tong WANG

Journal Article

Nitrogen removal performance of municipal reverse osmosis concentrate with low C/N ratio by membrane-aerated

Xiao Quan, Kai Huang, Mei Li, Meichao Lan, Baoan Li

Journal Article

Effects of leakage and friction on the miniaturization of a Wankel compressor

Yilin ZHANG, Wen WANG

Journal Article

strong>Forward osmosis coupled with lime-soda ash softening for volume minimization of reverse osmosis concentrate

Jiandong Lu, Shijie You, Xiuheng Wang

Journal Article

Test investigation on hydraulic losses in the discharge passage of an axial-flow pump

QIU Baoyun, CAO Haihong, JIANG Wei, GAO Zhaohui, WANG Fei

Journal Article

Cohesive zone model-based analyses of localized leakage of segmentally lined tunnels

Journal Article

Long-term settlement behavior of ground around shield tunnel due to leakage of water in soft deposit

Huaina WU, Yeshuang XU, Shui-long SHEN, Jin-chun CHAI

Journal Article

A building unit decomposition model for energy leakage by infrared thermography image analysis

Yan SU, Fangjun HONG, Lianjie SHU

Journal Article

Meeting Future Challenge in Copper Industry——Considerations on Treatment of Copper Sulfide Concentrate

Zhu Zuze

Journal Article

Aggravation of membrane fouling and methane leakage by a three-phase separator in an external anaerobic

Chao Pang, Chunhua He, Zhenhu Hu, Shoujun Yuan, Wei Wang

Journal Article

Oil and gas strategy passage construction and management innovation of CNPCI

Huang Weihe

Journal Article

Dynamic power-gating for leakage power reduction in FPGAs

Hadi JAHANIRAD,h.jahanirad@uok.ac.ir

Journal Article

Leakage location system for oil pipeline on basis of stress wave detection

WANG Bangfeng, CHEN Renwen

Journal Article