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An experimental study of a single-piston free piston linear generator

Jin XIAO, Yingdong CHENG, Jinlong WANG, Chengwei ZHU, Zhen HUANG

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 916-930 doi: 10.1007/s11708-022-0838-4

Abstract: The root cause of this misfire was then identified as the poor scavenging process, and a compressed airsource was leveraged to enhance the related scavenging pressure.Afterward, optimal control parameters, in terms of scavenging pressure, air-fuel equivalence ratio, andignition position, were then calibrated in this charged-scavenging condition.

Keywords： free piston linear generator (FPLG)     charged scavenging     engine control     misfire     stable operation    

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Temporal evolution of charged and neutral nanoparticle concentrations during atmospheric new particle

E. Rohan Jayaratne, Buddhi Pushpawela, Lidia Morawska

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 5, doi: 10.1007/s11783-016-0862-x

Abstract: In 50 events, charged and neutral particles were not formed at the same time.In 42 of these events the charged particles formed before the neutral particles.formation (NPF) events in the urban environment of Brisbane, Australia, showed that the formation of chargedWe studied the times at which the charged and neutral particle concentrations in the size range 1.8–3.2While the charged particles were more likely to form before the neutral particles, once formed, the growth

Keywords： Charged particles     Cluster ions     Secondary particles     Environmental pollution    

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Shear wall layout optimization of tall buildings using Quantum Charged System Search

Siamak TALATAHARI, Mahdi RABIEI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 5,   Pages 1131-1151 doi: 10.1007/s11709-020-0660-1

Abstract: In this paper, Quantum Charged System Search (QCSS) algorithm is presented as a new optimization methodand used to improve the convergence capability of the original Charged System Search.

Keywords： Quantum Charged System Search     shear wall     layout optimization     tall buildings    

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Free radical scavenging window of infertile patients with polycystic ovary syndrome: correlation with

Bo Huang, Zhou Li, Xinling Ren, Jihui Ai, Lixia Zhu, Lei Jin

Frontiers of Medicine 2017, Volume 11, Issue 2,   Pages 247-252 doi: 10.1007/s11684-017-0519-6

Abstract: However, studies analyzing the relationship between the free radical scavenging capacity and embryo qualityThe aim of this study was to evaluate the relationship between the free radical scavenging window ofThe free radical scavenging capacity of follicular fluid from women with PCOS was determined by a,a-diphenyl-b-picrylhydrazylThe lower control limit of DPPH radical scavenging capacity and upper control limit of ROS level wereThese cut-off values of free radical scavenging activity of follicular fluid could assist embryologists

Keywords： in vitro fertilization     PCOS     free radical     embryo quality    

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Ductility loss of hydrogen-charged and releasing 304L steel

Yanfei WANG, Jianming GONG, Yong JIANG, Wenchun JIANG, Wang JIANG

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 3,   Pages 298-304 doi: 10.1007/s11465-013-0265-7

Abstract: Flat tensile specimens were cathodic hydrogen charged at various current densities.For each density, two specimens were charged at the same condition.The results show ductility loss occurred in the hydrogen-charged specimens and the loss increased as

Keywords： hydrogen embrittlement     ductility loss     hydrogen releasing     control strategy     304L austenitic stainless steel    

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Effect of electrokinetic property of charged polyether sulfone membrane on bovine serum albumin fouling

Xiaorong Meng, Shanshan Huo, Lei Wang, Xudong Wang, Yongtao Lv, Weiting Tang, Rui Miao, Danxi Huang

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 2, doi: 10.1007/s11783-017-0907-9

Abstract: Negatively charged CMPES and positively charged QAPES membranes were fabricated.Negatively charged carboxymethylated polyethersulfone (CMPES) and positively charged quaternized polyethersulfoneWhen pH value was 3, 4.7 or 9, the interaction behavior between charged PES membrane and BSA showed thatCharged modification significantly reduced the adhesion of PES membrane-BSA, and the adhesion data wasThe above experimental facts proved that the charged membrane interfacial electric double layer structure

Keywords： Charged PES UF membrane     BSA     Electrokinetic characterization     Adhesion force     Jump distance    

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Combustion and emission characteristics of a turbo-charged common rail diesel engine fuelled with diesel-biodiesel-DEE

Ni ZHANG, Zuohua HUANG, Xiangang WANG, Bin ZHENG

Frontiers in Energy 2011, Volume 5, Issue 1,   Pages 104-114 doi: 10.1007/s11708-011-0138-x

Abstract: The combustion and emission characteristics of a turbo-charged, common rail diesel engine fuelled with

Keywords： Combustion     particulate emissions     diesel-biodiesel-DEE blend     diesel engine    

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A High-Efficiency Two-Stroke Engine Concept: The Boosted Uniflow Scavenged Direct-Injection Gasoline (BUSDIG) Engine with Air Hybrid Operation Review

Xinyan Wang, Hua Zhao

Engineering 2019, Volume 5, Issue 3,   Pages 535-547 doi: 10.1016/j.eng.2019.03.008

Abstract: In order to maximize the scavenging performance and produce sufficient incylinder flow motions for theThe effects of the opening profiles of the scavenge ports and exhaust valves on controlling the scavenging

Keywords： Two-stroke engine     Uniflow scavenging     Engine design     Engine simulation     Scavenging performance     Thermal    

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Monovalent Cation Exchange Membranes with Janus Charged Structure for Ion Separation Article

Wenguang Wang, Yanqiu Zhang, Xiaobin Yang, Haixiang Sun, Yadong Wu, Lu Shao

Engineering 2023, Volume 25, Issue 6,   Pages 204-213 doi: 10.1016/j.eng.2021.09.020

Abstract: Herein, we proposed a facile approach to construct a novel M-CEM with a Janus-charged structure, consistingof a positively-charged trimesic acid/polyethylenimine surface thin layer and a negatively charged commercialSelectrodialysis results indicated that the Janus-charged M-CEMs could effectively suppress the migrationof anions, which often occurred in porous CEMs, thereby enabling the novel Janus-charged M-CEMs to possessCompared with state-of-the-art M-CEMs, the Janus-charged M-CEM exhibited the highest perm-selectivity

Keywords： Monovalent cation exchange membranes     Janus charged structure     Selectrodialysis     Perm-selectivity     “Upper    

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Novel polyethyleneimine/TMC-based nanofiltration membrane prepared on a polydopamine coated substrate

Zhe Yang, Xiaoyu Huang, Jianqiang Wang, Chuyang Y. Tang

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 2,   Pages 273-282 doi: 10.1007/s11705-017-1695-2

Abstract: Most commercial NF membranes are negatively charged at the pH range of a typical feed solution.polymerization reaction on a polydopamine coated hydrolyzed polyacrylonitrile substrate to obtain a positively charged

Keywords： nanofiltration     polyethyleneimine     trimesoyl chloride     polydopamine     positively charged rejection layer    

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Study on the Removal Technology of the Respirable Dust inthe Metallurgy Industry

Zou Shenghua,Li Gang, Li Kongqing

Strategic Study of CAE 2007, Volume 9, Issue 11,   Pages 196-199

Abstract: Based on analyzing and comparing with different technologies of reducing dust, the results show that charged

Keywords： srespirable dust     wetting agent     ultrasonic atomization     magnetic water     charged fog     dust cleaningeffect    

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Metal cation removal by P(VC-r-AA) copolymer ultrafiltration membranes

Nachuan Wang, Jun Wang, Peng Zhang, Wenbin Wang, Chuangchao Sun, Ling Xiao, Chen Chen, Bin Zhao, Qingran Kong, Baoku Zhu

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 2,   Pages 262-272 doi: 10.1007/s11705-017-1682-7

Abstract: A series of amphiphilic copolymers containing poly(vinyl chloride-r-acrylic acid) (P(VC-r-AA) ) was synthesized and used to prepare membranes via a non-solvent induced phase separation method. The prepared membranes were characterized by scanning electron microscopy, X-ray photoelectron spectroscopy, and water contact angle and zeta potential measurements. The copolymer P(VC-r-AA) chains did not dissolved in a coagulation bath, indicating that the AA segments were completely retained within the membrane. Enriching degree of AA segments in surface layer was 2 for copolymer membrane. In addition, the introduction of AA segments made the membrane electronegative and hydrophilic so that the membrane was sensitive to the solution pH. The fouling resistance, adsorption of Cu(II), Cr(III) and Ce(IV) ions and the desorption properties of the membranes were also determined. The copolymer membranes exhibited good antifouling performance with a fouling reversibility of 92%. The membranes also had good adsorption capacities for Cu(II), Cr(III) and Ce(IV) ions. The optimal pH for Cu(II) adsorption was 6 and the copolymer membrane has potential applications for low concentration Cu(II) removal.

Keywords： poly(vinyl chloride-r-acrylic acid)     negatively charged PVC membrane     anti-fouling     heavy metal adsorption    

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Scavenging Microwave Wireless Power: A Unified Model, Rectenna Design Automation, and Cutting-Edge Techniques Review

Si-Ping Gao, Jun-Hui Ou, Xiuyin Zhang, Yongxin Guo

Engineering 2023, Volume 30, Issue 11,   Pages 32-48 doi: 10.1016/j.eng.2023.05.019

Abstract:

While sufficient review articles exist on inductive short-range wireless power transfer (WPT), long-haul microwave WPT (MWPT) for solar power satellites, and ambient microwave wireless energy harvesting (MWEH) in urban areas, few studies focus on the fundamental modeling and related design automation of receiver systems. This article reviews the development of MWPT and MWEH receivers, with a focus on rectenna design automation. A novel rectifier model capable of accurately modeling the rectification process under both high and low input power is presented. The model reveals the theoretical boundary of radio frequency-to-direct current (dc) power conversion efficiency and, most importantly, enables an automated system design. The automated rectenna design flow is sequential, with the minimal engagement of iterative optimization. It covers the design automation of every module (i.e., rectifiers, matching circuits,   antennae, and dc–dc converters). Scaling-up of the technique to large rectenna arrays is also possible, where the challenges in array partitioning and power combining are briefly discussed. In addition, several cutting-edge rectenna techniques for MWPT and MWEH are reviewed, including the dynamic range extension technique, the harmonics-based retro-directive technique, and the simultaneous wireless information and power transfer technique, which can be good complements to the presented automated design methodology.

Keywords： Microwave wireless power transfer     Microwave wireless energy harvesting     Unified Rectifier model     Automated rectenna design     Emerging rectenna techniques    

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Title Author Date Type Operation

An experimental study of a single-piston free piston linear generator

Jin XIAO, Yingdong CHENG, Jinlong WANG, Chengwei ZHU, Zhen HUANG

Journal Article

Temporal evolution of charged and neutral nanoparticle concentrations during atmospheric new particle

E. Rohan Jayaratne, Buddhi Pushpawela, Lidia Morawska

Journal Article

Shear wall layout optimization of tall buildings using Quantum Charged System Search

Siamak TALATAHARI, Mahdi RABIEI

Journal Article

Free radical scavenging window of infertile patients with polycystic ovary syndrome: correlation with

Bo Huang, Zhou Li, Xinling Ren, Jihui Ai, Lixia Zhu, Lei Jin

Journal Article

Ductility loss of hydrogen-charged and releasing 304L steel

Yanfei WANG, Jianming GONG, Yong JIANG, Wenchun JIANG, Wang JIANG

Journal Article

Effect of electrokinetic property of charged polyether sulfone membrane on bovine serum albumin fouling

Xiaorong Meng, Shanshan Huo, Lei Wang, Xudong Wang, Yongtao Lv, Weiting Tang, Rui Miao, Danxi Huang

Journal Article

Combustion and emission characteristics of a turbo-charged common rail diesel engine fuelled with diesel-biodiesel-DEE

Ni ZHANG, Zuohua HUANG, Xiangang WANG, Bin ZHENG

Journal Article

A High-Efficiency Two-Stroke Engine Concept: The Boosted Uniflow Scavenged Direct-Injection Gasoline (BUSDIG) Engine with Air Hybrid Operation

Xinyan Wang, Hua Zhao

Journal Article

Monovalent Cation Exchange Membranes with Janus Charged Structure for Ion Separation

Wenguang Wang, Yanqiu Zhang, Xiaobin Yang, Haixiang Sun, Yadong Wu, Lu Shao

Journal Article

Novel polyethyleneimine/TMC-based nanofiltration membrane prepared on a polydopamine coated substrate

Zhe Yang, Xiaoyu Huang, Jianqiang Wang, Chuyang Y. Tang

Journal Article

Study on the Removal Technology of the Respirable Dust inthe Metallurgy Industry

Zou Shenghua,Li Gang, Li Kongqing

Journal Article

Metal cation removal by P(VC-r-AA) copolymer ultrafiltration membranes

Nachuan Wang, Jun Wang, Peng Zhang, Wenbin Wang, Chuangchao Sun, Ling Xiao, Chen Chen, Bin Zhao, Qingran Kong, Baoku Zhu

Journal Article

Scavenging Microwave Wireless Power: A Unified Model, Rectenna Design Automation, and Cutting-Edge Techniques

Si-Ping Gao, Jun-Hui Ou, Xiuyin Zhang, Yongxin Guo

Journal Article