Resource Type

Journal Article 234

Conference Videos 10

Year

2024 1

2023 27

2022 32

2021 20

2020 18

2019 18

2018 12

2017 12

2016 10

2015 13

2014 10

2013 6

2012 7

2011 7

2010 9

2009 7

2008 8

2007 10

2006 2

2005 3

open ︾

Keywords

life cycle assessment 10

life cycle 9

China 2

Electron transfer 2

Life cycle assessment 2

carbon emission 2

control 2

dual circulation 2

irreversibility 2

nuclear fuel cycle 2

3-AB 1

3D printing 1

4D printing 1

5G 1

Brucella melitensis 1

Clostridium tyrobutyricum 1

Eucommia 1

β-glucosidase 1

AI reasoning 1

open ︾

Search scope:

排序： Display mode:

Optimization of the power, efficiency and ecological function for an air-standard irreversible Dual-Millercycle

Zhixiang WU, Lingen CHEN, Yanlin GE, Fengrui SUN

Frontiers in Energy 2019, Volume 13, Issue 3,   Pages 579-589 doi: 10.1007/s11708-018-0557-z

Abstract: This paper establishes an irreversible Dual-Miller cycle (DMC) model with the heat transfer (HT) lossTo analyze the effects of the cut-off ratio ( ) and Miller cycle ratio ( ) on the power output ( ), thermalPerformance differences among the DMC, the Otto cycle (OC), the Dual cycle (DDC), and the Otto-Millercycle (OMC) are compared for fixed design parameters.

Keywords： finite-time thermodynamics     Dual-Miller cycle     power output     thermal efficiency     ecological function    

HTML PDF Collect

Effect of variable heat capacities on performance of an irreversible Miller heat engine

Xingmei YE

Frontiers in Energy 2012, Volume 6, Issue 3,   Pages 280-284 doi: 10.1007/s11708-012-0203-0

Abstract: compression and expansion processes, and the heat leak losses through the cylinder wall, an irreversible cyclemodel of the Miller heat engine was established, from which expressions for the efficiency and workoutput of the cycle were derived.The performance characteristic curves of the Miller heat engine were generated through numerical calculationexpansion efficiencies, the variable heat capacities and the heat leak losses on the performance of the cycle

Keywords： Miller cycle     variable heat capacity     irreversibility     parametric optimization    

HTML PDF Collect

Improvement of engine performance with high compression ratio based on knock suppression using Millercycle with boost pressure and split injection

Haiqiao WEI, Jie YU, Lei ZHOU

Frontiers in Energy 2019, Volume 13, Issue 4,   Pages 691-706 doi: 10.1007/s11708-019-0621-3

Abstract: comprehensively investigate the application of high compression ratio on a gasoline engine based on the Millercycle with boost pressure and split injection.It was found that a high level of Miller cycle with a higher boost pressure could be used in CR12 toperformance and a reduced fuel consumption of CR12 at full load could be achieved by using the strong Millercycle and split injection.

Keywords： high compression ratio     knock     Miller cycle     split injection     engine performance    

HTML PDF Collect

High production of butyric acid by

Chao Ma,Jianfa Ou,Matthew Miller,Sarah McFann,Xiaoguang (Margaret) Liu

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 3,   Pages 369-375 doi: 10.1007/s11705-015-1525-3

Abstract: The objective of this study was to improve the production of butyric acid by process optimization using the metabolically engineered mutant of (PAK-Em). First, the free-cell fermentation at pH 6.0 produced butyric acid with concentration of 38.44 g/L and yield of 0.42 g/g. Second, the immobilized-cell fermentations using fibrous-bed bioreactor (FBB) were run at pHs of 5.0, 5.5, 6.0, 6.5 and 7.0 to optimize fermentation process and improve the butyric acid production. It was found that the highest titer of butyric acid, 63.02 g/L, was achieved at pH 6.5. Finally, the metabolic flux balance analysis was performed to investigate the carbon rebalance in . The results show both gene manipulation and fermentation pH change redistribute carbon between biomass, acetic acid and butyric acid. This study demonstrated that high butyric acid production could be obtained by integrating metabolic engineering and fermentation process optimization.

Keywords： Clostridium tyrobutyricum     butyric acid production     fermentation     mutant     pH     flux balance analysis    

HTML PDF Collect

Mercury source zone identification using soil vapor sampling and analysis

David WATSON,Carrie MILLER,Brian LESTER,Kenneth LOWE,George SOUTHWORTH,Mary Anna BOGLE,Liyuan LIANG,Eric

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 4,   Pages 596-604 doi: 10.1007/s11783-014-0709-2

Abstract: Development and demonstration of reliable measurement techniques that can detect and help quantify the nature and extent of elemental mercury (Hg(0)) in the subsurface are needed to reduce uncertainties in the decision-making process and increase the effectiveness of remedial actions. We conducted field tests at the Y-12 National Security Complex in Oak Ridge, Tennessee, USA, to determine if sampling and analysis of Hg(0) vapors in the shallow subsurface (<0.3 m depth) can be used to as an indicator of the location and extent of Hg(0) releases in the subsurface. We constructed a rigid polyvinyl chloride push probe assembly, which was driven into the ground. Soil gas samples were collected through a sealed inner tube of the assembly and were analyzed immediately in the field with a Lumex and/or Jerome Hg(0) analyzer. Time-series sampling showed that Hg vapor concentrations were fairly stable over time, suggesting that the vapor phase Hg(0) was not being depleted and that sampling results were not sensitive to the soil gas purge volume. Hg(0) vapor data collected at over 200 push probe locations at 3 different release sites correlated very well to areas of known Hg(0) contamination. Vertical profiling of Hg(0) vapor concentrations conducted at two locations provided information on the vertical distribution of Hg(0) contamination in the subsurface. We conclude from our studies that soil gas sampling and analysis can be conducted rapidly and inexpensively at large scales to help identify areas contaminated with Hg(0).

Keywords： push probe     spill     characterization     mapping     gas    

HTML PDF Collect

A novel task-oriented framework for dual-arm robotic assembly task

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3,   Pages 528-545 doi: 10.1007/s11465-021-0638-2

Abstract: In industrial manufacturing, the deployment of dual-arm robots in assembly tasks has become a trend.However, making the dual-arm robots more intelligent in such applications is still an open, challengingperception to facilitate robot deployment from perception to execution and finish assembly problems by using dual-armExperiments are set up with a dual-arm robotic system (ABB YuMi and an RGB-D camera) to validate the

Keywords： dual-arm assembly     AI reasoning     intelligent system     task-oriented motion planning     visual perception    

HTML PDF Collect

A comparison of production system life cycle models

Rajesh ATTRI, Sandeep GROVER

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 3,   Pages 305-311 doi: 10.1007/s11465-012-0332-5

Abstract: Hence, analyzing different life cycle models of the production system is necessary.In this paper, different life cycle models of the production system are compared to evaluate the distinctiveFurthermore, the difference between product life cycle and production life cycle is summarized, and theeffect of product life cycle on production life cycle is explained.Finally, a production system life cycle model, along with key activities to be performed in each stage

Keywords： production system     life cycle     model     product    

HTML PDF Collect

Theory analysis and system identification methods on thermal dynamics characteristics of ballscrews

XIA Junyong, HU Youmin, WU Bo, SHI Tielin

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4,   Pages 408-415 doi: 10.1007/s11465-008-0061-y

Abstract: The model of thermal error of the axis in a feed system of DM4600 vertical miller is established with

Keywords： square system     network     vertical miller     transfer     ANN    

HTML PDF Collect

Improved nitrogen removal in dual-contaminated surface water by photocatalysis

Yongming ZHANG, Rong YAN, Zhen ZOU, Jiewei WANG, Bruce E. RITTMANN

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 3,   Pages 428-436 doi: 10.1007/s11783-012-0401-3

Abstract: River waters in China have dual contamination by nutrients and recalcitrant organic compounds.Batch denitrification tests in a biofilm reactor demonstrated that dual-contaminated river water was

Keywords： dual contamination     eutrophication     photocatalysis     remediation     surface water    

HTML PDF Collect

Analysis on carbon emission reduction intensity of fuel cell vehicles from a life-cycle perspective

Frontiers in Energy doi: 10.1007/s11708-023-0909-1

Abstract: This paper evaluated the life-cycle cost and carbon emission of hydrogen energy via lots of field surveys

Keywords： hydrogen energy     life-cycle assessment (LCA)     fuel cell vehicle     carbon emission     energy cost    

HTML PDF Collect

Development of a dual temperature control system for isoprene biosynthesis in

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7,   Pages 1079-1089 doi: 10.1007/s11705-021-2088-0

Abstract: A dual temperature regulation system was developed through engineering and expression regulation of theCompared to the control strain with constitutively expressed wild-type Gal4p, the dual temperature regulationreports the creation of the first cold-sensitive variants of Gal4p by directed evolution and provides a dual

Keywords： transcriptional activator     directed evolution     dynamic control     heat-shock     isoprene    

HTML PDF Collect

Design of Data Supervision System Based on Dual CPU Structure

Jia Guixi,Qi Le

Strategic Study of CAE 2006, Volume 8, Issue 4,   Pages 68-71

Abstract: temperature on the clients' lines in communication system, the design method of the system based on dualsystem has been applied to the supervision of 48 V communication lines in mail system.It shows that the dual

Keywords： data supervision     dual CPU     dual port RAM    

HTML PDF Collect

Experimental study of stratified lean burn characteristics on a dual injection gasoline engine

Chun XIA, Tingyu ZHAO, Junhua FANG, Lei ZHU, Zhen HUANG

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 900-915 doi: 10.1007/s11708-021-0812-6

Abstract: In this study, dual injection stratified combustion mode is used to accelerate the burning rate of leanDI, and DI timing on combustion, fuel consumption, gaseous emissions, and particulate emissions of a dualThere exists a spark window for dual injection stratified lean burn mode, in which the spark timing hasThe dual injection stratified lean burn has a wide range of applications which can effectively reduce

Keywords： dual injection     stratified lean burn     gasoline engine     particulate matter emission     combustion analysis    

HTML PDF Collect

Improvement of the cascading closed loop cycle system

ZHANG Guoqiang, CAI Ruixian

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 341-346 doi: 10.1007/s11708-007-0051-5

Abstract: Aspen Plus was used to simulate and get more information about the cascading closed loop cycle (CCLC)by the CCLC, both qualitative and quantitive comparisons between the system and simple steam Rankine cycleA better cycle scheme and pressure distribution was proposed to raise the efficiency of the CCLC.
HTML PDF Collect

State-of-the-art applications of machine learning in the life cycle of solid waste management

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 4, doi: 10.1007/s11783-023-1644-x

Abstract:

● State-of-the-art applications of machine learning (ML) in solid waste (SW) is presented.

Keywords： Machine learning (ML)     Solid waste (SW)     Bibliometrics     SW management     Energy utilization     Life cycle    

HTML PDF Collect

Title Author Date Type Operation

Optimization of the power, efficiency and ecological function for an air-standard irreversible Dual-Millercycle

Zhixiang WU, Lingen CHEN, Yanlin GE, Fengrui SUN

Journal Article

Effect of variable heat capacities on performance of an irreversible Miller heat engine

Xingmei YE

Journal Article

Improvement of engine performance with high compression ratio based on knock suppression using Millercycle with boost pressure and split injection

Haiqiao WEI, Jie YU, Lei ZHOU

Journal Article

High production of butyric acid by

Chao Ma,Jianfa Ou,Matthew Miller,Sarah McFann,Xiaoguang (Margaret) Liu

Journal Article

Mercury source zone identification using soil vapor sampling and analysis

David WATSON,Carrie MILLER,Brian LESTER,Kenneth LOWE,George SOUTHWORTH,Mary Anna BOGLE,Liyuan LIANG,Eric

Journal Article

A novel task-oriented framework for dual-arm robotic assembly task

Journal Article

A comparison of production system life cycle models

Rajesh ATTRI, Sandeep GROVER

Journal Article

Theory analysis and system identification methods on thermal dynamics characteristics of ballscrews

XIA Junyong, HU Youmin, WU Bo, SHI Tielin

Journal Article

Improved nitrogen removal in dual-contaminated surface water by photocatalysis

Yongming ZHANG, Rong YAN, Zhen ZOU, Jiewei WANG, Bruce E. RITTMANN

Journal Article

Analysis on carbon emission reduction intensity of fuel cell vehicles from a life-cycle perspective

Journal Article

Development of a dual temperature control system for isoprene biosynthesis in

Journal Article

Design of Data Supervision System Based on Dual CPU Structure

Jia Guixi,Qi Le

Journal Article

Experimental study of stratified lean burn characteristics on a dual injection gasoline engine

Chun XIA, Tingyu ZHAO, Junhua FANG, Lei ZHU, Zhen HUANG

Journal Article

Improvement of the cascading closed loop cycle system

ZHANG Guoqiang, CAI Ruixian

Journal Article

State-of-the-art applications of machine learning in the life cycle of solid waste management

Journal Article