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A cellphone-based colorimetric multi-channel sensor for water environmental monitoring

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 12, doi: 10.1007/s11783-022-1590-z

Abstract:

● A cellphone-based colorimetric multi-channel sensor for in-field

Keywords： Colorimetric analysis     Multi-channel sensor     Cellphone     Water quality indexes     Environmental monitoring    

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Analysis of nonlinear channel friction inverse problem

CHENG Weiping, LIU Guohua

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2,   Pages 205-210 doi: 10.1007/s11709-007-0024-0

Abstract: decomposition (SVD) for general inverse matrices and the optimization algorithm are used to solve the channel

Keywords： singular     SVD     second-order     covariance     Theoretical    

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Indoor massivemultiple-inputmultiple-output channel characterization and performance evaluation Article

Jian-zhi LI, Bo AI, Rui-si HE, Qi WANG, Mi YANG, Bei ZHANG, Ke GUAN, Dan-ping HE, Zhang-dui ZHONG, Ting ZHOU, Nan LI

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 6,   Pages 773-787 doi: 10.1631/FITEE.1700021

Abstract: present a measurement campaign to characterize an indoor massive multiple-input multiple-output (MIMO) channelThe typical channel parameters are extracted, including path loss, shadow fading, power delay profileThe frequency dependence of these channel parameters is analyzed.Other performance measures, such as entropy capacity, Demmel condition number, and channel ellipticity

Keywords： Massive MIMO     Channel modeling     5G     Shadow fading     Delay spread     Matched filter     Entropy capacity     Conditionnumber     Channel ellipticity    

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Improvement of solidification model and analysis of 3D channel blockage with MPS method

Frontiers in Energy 2021, Volume 15, Issue 4,   Pages 946-958 doi: 10.1007/s11708-021-0754-z

Abstract: In a severe accident of a nuclear power reactor, coolant channel blockage by solidified molten core debrisIn the study described in this paper, a novel solidification model for analyzing melt flowing channelwithin each time step over the “mushy zone” (between the solidus and liquidus temperature) for accurate modelingThe results show that a partial channel blockage develops from the vicinity of the speed limiter, whichdoes not fully develop into a complete channel blockage, but still diverts the incoming melt flow that

Keywords： boiling water reactor (BWR)     severe accident     channel blockage     moving particle semi-implicit (MPS) method    

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Experimental investigation of liquid metal alloy based mini-channel heat exchanger for high power electronic

Manli LUO, Jing LIU

Frontiers in Energy 2013, Volume 7, Issue 4,   Pages 479-486 doi: 10.1007/s11708-013-0277-3

Abstract: this paper is dedicated to clarify the heat transfer behaviors of the liquid metal flowing in mini-channelwere all cooled down by these three heat dissipation apparatuses and the exchanger with the smallest channelconstant heat flux in the hydrodynamically developed and thermally developing region in the rectangular channelThis study is expected to provide valuable reference for designing future liquid metal based mini-channel

Keywords： heat exchanger     liquid metal     mini-channel     heat dissipation     heat transfer coefficient    

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Effect of Joule heating on electro-osmotic flow in a closed-end micro-channel with isothermal and convective

Liang ZHAO, Linhua LIU,

Frontiers in Energy 2009, Volume 3, Issue 4,   Pages 381-388 doi: 10.1007/s11708-009-0057-2

Abstract: The effect of Joule heating on the steady state electro-osmotic flow in a closed-end micro-channel ispresence of Joule heating causes an increase in temperature and a decrease in viscosity in the whole micro-channelvelocity at the central region in order to maintain a zero flow rate at the cross section of the micro-channelpressure gradient is also studied, which is very important for the application of the closed-end micro-channelsignificantly smaller than that without considering Joule heating when the wall temperature of the micro-channel

Keywords： closed-end micro-channel     electrical double layer     electro-osmotic flow     induced pressure gradient     Joule    

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Understanding channel tropism in traditional Chinese medicine in the context of systems biology

Ping Liu, Songlin Liu, Gang Chen, Ping Wang

Frontiers of Medicine 2013, Volume 7, Issue 3,   Pages 277-279 doi: 10.1007/s11684-013-0273-3

Abstract:

Channel tropism is investigated and developed through long-term clinical practice.In recent years, the development of channel tropism theory has attracted increasing attention.This study analyzed channel tropism theory and the problems associated with it.Systems biology could provide novel insights and platform in the study of channel tropism.Some problems in channel tropism theory, including pharmacology and action mechanism, were investigated

Keywords： systems biology     channel tropism theory     traditional Chinese medicine     application    

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The Innovation of the Yangtze Estuary Deepwater Channel Improvement Project

Fan Qijin

Strategic Study of CAE 2004, Volume 6, Issue 12,   Pages 13-26

Abstract: technical innovation and strict, scientific management, the unprecedented Yangtze Estuary deepwater channel

Keywords： Yangtze Estuary deepwater channel     engineering management     designing     construction    

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Optimum design of a channel roughened by dimples to improve cooling performance

Abdus SAMAD, Ki-Don LEE, Kwang-Yong KIM, Jin-Hyuk KIM,

Frontiers in Energy 2010, Volume 4, Issue 2,   Pages 262-268 doi: 10.1007/s11708-010-0012-2

Abstract: Staggered arrays of dimples imprinted on opposite surfaces of an internal flow channel have been formulatedThe channel is simulated with the help of three-dimensional Reynolds-averaged Navier-Stokes (RANS) analysisThree non-dimensional design variables based on dimple size and channel dimensions and two objectivesThe optimum design produces lower channel height, wider dimple spacing, and deeper dimple as compared

Keywords： Staggered     three-dimensional Reynolds-averaged     multi-objective optimization     reference     transfer    

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Joint DOA and channel estimation with data detection based on 2D unitary ESPRITin massive MIMO systems Article

Jing-ming KUANG, Yuan ZHOU, Ze-song FEI

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 6,   Pages 841-849 doi: 10.1631/FITEE.1700025

Abstract: We propose a novel method for joint two-dimensional (2D) direction-of-arrival (DOA) and channel estimationThe conventional DOA estimation algorithms usually assume that the channel impulse responses are knownIn contrast, a joint DOA and channel estimation scheme is proposed, which first estimates the channelAfter that, the DOAs of the waves are estimated based on a unitary ESPRIT algorithm using previous channelimpulse response estimates instead of accurate channel impulse responses and then, the enhanced channel

Keywords： Two-dimensional (2D) direction-of-arrival (DOA) estimation     Channel impulse response estimation     Data    

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Construction of west rail channel and analysis of policy measures

Sun Yongfu

Strategic Study of CAE 2010, Volume 12, Issue 6,   Pages 18-24

Abstract: analysis of the west rail, the main problems at present are raised, and the need for rail ransport channelThe west rail network development objectives and the rail channel onstruction principle are clarifiedAnd some policy measures o speeding up the construction of west rail channel are proposed.

Keywords： west rail     channel onstruction     transport capacity     investment and financing reform     rail freight price    

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Frequency–angle two-dimensional reflection coefficient modeling based on terahertz channel measurement Correspondence

Zhaowei CHANG, Jianhua ZHANG, Pan TANG, Lei TIAN, Li YU, Guangyi LIU, Liang XIA,changzw12345@bupt.edu.cn,jhzhang@bupt.edu.cn

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 4,   Pages 626-632 doi: 10.1631/FITEE.2200290

Abstract: Terahertz (THz) channel propagation characteristics are vital for the design, evaluation, and optimizationMoreover, reflection plays a significant role in channel propagation.In this correspondence, the reflection coefficients of the THz channel are researched based on extensiveFirst, we set up the THz channel sounder from 220 to 320 GHz at incident angles ranging from 10◦ to 80Generally, these results are useful for modeling THz channels.

Keywords： 太赫兹通信；反射系数建模；入射角；建筑材料；菲涅耳模型    

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Experimental study on flow behavior at open channel confluences

WANG Xiekang, WANG Xianye, LU Weizhen, LIU Tonghuan

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2,   Pages 211-216 doi: 10.1007/s11709-007-0025-z

Abstract: Channel confluences are common in natural rivers and hydraulic engineering, and the flow behavior atBased on the analysis of the velocity at the confluence, the distinctive characteristics of a channeldivided into several zones including a zone of separation immediately downstream of the junction branch channel, the maximum and minimum velocity regions at the upstream and downstream in the confluent channel, anda shear plane developed between the two combining flows downstream of the confluent channel.

Keywords： ADV     different     interaction     separation     downstream    

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Alluvial channel hydrodynamics around tandem piers with downward seepage

Rutuja CHAVAN, Wenxin HUAI, Bimlesh KUMAR

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 6,   Pages 1445-1461 doi: 10.1007/s11709-020-0648-x

Abstract: In this paper, we report the turbulent flow structures and the scour geometry around two piers with different diameters. An experiment was conducted on a non-uniform sand bed with two types of tandem arrangements, namely, pier (T1) with a 75 mm front and 90 mm rear, and pier (T2) with a 90 mm front and 75 mm rear, with and without-seepage flows, respectively. A strong wake region was observed behind the piers, but the vortex strength diminished with downward seepage. Streamwise velocity was found to be maximum near the bed downstream of the piers and at the edge of the scour hole upstream of the piers. Quadrant analysis was used to recognize the susceptible region for sediment entrainment and deposition. Upstream of the piers near the bed, the moments, turbulent kinetic energy (TKE), and TKE fluxes were found to decrease with downward seepage, in contrast to those in a plane mobile bed without piers. The reduction percentages of scour depth at the rear pier compared with the front one were approximately 40% for T1 and 60% for T2. Downward seepage also resulted in restrained growth of scouring with time.

Keywords： scour     seepage     Strouhal number     tandem arrangement     turbulent characteristics    

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Study on scheme comparison of bridge and tunnel for Bohai Strait cross-sea channel

Song Kezhi

Strategic Study of CAE 2013, Volume 15, Issue 12,   Pages 52-60

Abstract: Comparative evaluation index system for Bohai Strait cross-sea channel is structured by analytic hierarchytunnel scheme is maximum and the full tunnel scheme is the recommended scheme for Bohai Strait cross-sea channel

Keywords： bridge and tunnel engineering     cross-sea channel     Bohai Strait     scheme comparison     fuzzy comprehensive evaluation    

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Title Author Date Type Operation

A cellphone-based colorimetric multi-channel sensor for water environmental monitoring

Journal Article

Analysis of nonlinear channel friction inverse problem

CHENG Weiping, LIU Guohua

Journal Article

Indoor massivemultiple-inputmultiple-output channel characterization and performance evaluation

Jian-zhi LI, Bo AI, Rui-si HE, Qi WANG, Mi YANG, Bei ZHANG, Ke GUAN, Dan-ping HE, Zhang-dui ZHONG, Ting ZHOU, Nan LI

Journal Article

Improvement of solidification model and analysis of 3D channel blockage with MPS method

Journal Article

Experimental investigation of liquid metal alloy based mini-channel heat exchanger for high power electronic

Manli LUO, Jing LIU

Journal Article

Effect of Joule heating on electro-osmotic flow in a closed-end micro-channel with isothermal and convective

Liang ZHAO, Linhua LIU,

Journal Article

Understanding channel tropism in traditional Chinese medicine in the context of systems biology

Ping Liu, Songlin Liu, Gang Chen, Ping Wang

Journal Article

The Innovation of the Yangtze Estuary Deepwater Channel Improvement Project

Fan Qijin

Journal Article

Optimum design of a channel roughened by dimples to improve cooling performance

Abdus SAMAD, Ki-Don LEE, Kwang-Yong KIM, Jin-Hyuk KIM,

Journal Article

Joint DOA and channel estimation with data detection based on 2D unitary ESPRITin massive MIMO systems

Jing-ming KUANG, Yuan ZHOU, Ze-song FEI

Journal Article

Construction of west rail channel and analysis of policy measures

Sun Yongfu

Journal Article

Frequency–angle two-dimensional reflection coefficient modeling based on terahertz channel measurement

Zhaowei CHANG, Jianhua ZHANG, Pan TANG, Lei TIAN, Li YU, Guangyi LIU, Liang XIA,changzw12345@bupt.edu.cn,jhzhang@bupt.edu.cn

Journal Article

Experimental study on flow behavior at open channel confluences

WANG Xiekang, WANG Xianye, LU Weizhen, LIU Tonghuan

Journal Article

Alluvial channel hydrodynamics around tandem piers with downward seepage

Rutuja CHAVAN, Wenxin HUAI, Bimlesh KUMAR

Journal Article

Study on scheme comparison of bridge and tunnel for Bohai Strait cross-sea channel

Song Kezhi

Journal Article