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Improving the performances of ultrasonic motors using intermittent contact scheme
Jiamei JIN, Jianhui ZHANG, Fu QIAN, Zhenfeng PAN,
《机械工程前沿(英文)》 2010年 第5卷 第2期 页码 242-246 doi: 10.1007/s11465-010-0016-y
The psychology of organizational and social sustainability
Wei-Tau LEE, Hao ZHANG, Kenneth H. FUNK II
《工程管理前沿(英文)》 2019年 第6卷 第3期 页码 336-350 doi: 10.1007/s42524-019-0029-0
关键词: work design work dimensions psychological factors good work
Basic model study on efficiency evaluation in collaborative design work process
XIE Qiu, YANG Yu, LI Xiaoli, ZHAO Ningyu
《机械工程前沿(英文)》 2007年 第2卷 第3期 页码 344-349 doi: 10.1007/s11465-007-0060-4
关键词: function system work evaluation process efficiency evaluation design work
Heat, mass, and work exchange networks
Zhiyou CHEN, Jingtao WANG
《化学科学与工程前沿(英文)》 2012年 第6卷 第4期 页码 484-502 doi: 10.1007/s11705-012-1221-5
关键词: process system engineering integration methods heat exchange network mass exchange network work exchange network
李十中
《中国工程科学》 2011年 第13卷 第2期 页码 50-56
文章分析了用生物燃料替代石油以实现控制全球气候变化、减少石油消耗和环境污染、创造就业机会,实现社会经济的可持续发展的重要性;介绍了国内外生物燃料产业发展历程和趋势,以及在汽车燃料和航空燃料领域的应用现状,提出了我国当前发展生物燃料的战略和对策。
Bing WANG, Qingbin CUI, Shuibo ZHANG
《工程管理前沿(英文)》 2019年 第6卷 第2期 页码 239-248 doi: 10.1007/s42524-019-0018-3
关键词: infrastructure development contract design contract reliability guarantee provision contract engineering
Rheological behavior’s effect on the work performance of oil film
Zhaomiao LIU, Qiuying JIN, Chengyin ZHANG, Feng SHEN
《机械工程前沿(英文)》 2011年 第6卷 第2期 页码 254-262 doi: 10.1007/s11465-011-0129-y
A 3D model of hydrostatic turntable’s oil chamber is established to investigate the lubricants performance with different rheological properties by using FLUENT software and the finite volume method. Newtonian oil and non-Newtonian oil’s performance under varied speeds are compared on the large size hydrostatic turntable system considering the temperature-viscosity relationship and pressure-viscosity relationship. The results show that the property of non-Newtonian fluid viscosity influenced by shear rate largely affects the lubricants performance for most oil added polymer additives. Lubricants cannot simply be regarded as Newtonian fluid. The shear thickening non-Newtonian fluid has a better work property. The results are important to design a large size and high-speed hydrostatic support system, choose lubricant oils, and investigate oil film’s work properties.
关键词: non-Newtonian fluid rotation speed pressure on wall viscosity
Robotized machining of big work pieces: Localization of supporting heads
Wojciech SZYNKIEWICZ, Teresa ZIELIŃSKA, Włodzimierz KASPRZAK
《机械工程前沿(英文)》 2010年 第5卷 第4期 页码 357-369 doi: 10.1007/s11465-010-0103-0
A naive optimization method for multi-line systems with alternative machines
Weichang KONG, Fei QIAO, Qidi WU
《机械工程前沿(英文)》 2019年 第14卷 第4期 页码 377-392 doi: 10.1007/s11465-019-0544-z
关键词: multi-line systems alternative machines feedback control closed-loop optimization
《医学前沿(英文)》 页码 907-923 doi: 10.1007/s11684-023-1009-7
Making central-local relations work: Comparing America and China environmental governance systems
Dan GUTTMAN, SONG Yaqin
《环境科学与工程前沿(英文)》 2007年 第1卷 第4期 页码 418-433 doi: 10.1007/s11783-007-0068-3
《农业科学与工程前沿(英文)》 2022年 第9卷 第2期 页码 284-294 doi: 10.15302/J-FASE-2021435
Bioenergy, currently the largest renewable energy source in the EU (64% of the total renewable energy consumption), has sparked great interest to meet the 32% renewable resources for the 2030 bioeconomy goal. The design of innovative cropping systems informed by bioeconomy imperatives requires the evaluate of the effects of introducing crops for bioenergy into conventional crop rotations. This study aimed to assess the impacts of changes in conventional cropping systems in mixed dairy cattle farms redesigned to introduce bioenergy crops either by increasing the biomass production through an increase of cover crops, while keeping main feed/food crops, or by substituting food crops with an increase of the crop rotation length. The assessment is based on the comparison between conventional and innovative systems oriented to feed and biogas production, with and without tillage, to evaluate their agri-environmental performances (biomass production, nitrogen fertilization autonomy, greenhouse gas emissions and biogas production). The result showed higher values in the biogas cropping system than in the conventional and feed ones for all indicators, biomass productivity (27% and 20% higher, respectively), nitrogen fertilization autonomy (26% and 73% higher, respectively), methanogenic potential (77% and 41% higher, respectively) and greenhouse gas emissions (15% and 3% higher, respectively). There were no negative impacts of no-till compared to the tillage practice, for all tested variables. The biogas cropping system showed a better potential in terms of agri-environmental performance, although its greenhouse gas emissions were higher. Consequently, it would be appropriate to undertake a multicriteria assessment integrating agri-environmental, economic and social performances.
Alternative energy development strategies for China towards 2030
Linwei MA , Zheng LI , Feng FU , Weidou NI , Xiliang ZHANG ,
《能源前沿(英文)》 2009年 第3卷 第1期 页码 2-10 doi: 10.1007/s11708-009-0014-0
关键词: alternative energy China energy technology pathway six-dimensional evaluation
Hani BENGUESMIA, Nassima M’ZIOU, Ahmed BOUBAKEUR
《能源前沿(英文)》 2021年 第15卷 第1期 页码 213-221 doi: 10.1007/s11708-017-0479-1
关键词: 1512L insulator circular model artificial pollution flashover leakage current discontinuous pollution high voltage
Dimethyl ether as alternative fuel for CI engine and vehicle
Zhen HUANG , Xinqi QIAO , Wugao ZHANG , Junhua WU , Junjun ZHANG ,
《能源前沿(英文)》 2009年 第3卷 第1期 页码 99-108 doi: 10.1007/s11708-009-0013-1
关键词: dimethyl ether (DME) fuel injection combustion process emission control CI engine vehicle
标题 作者 时间 类型 操作
Improving the performances of ultrasonic motors using intermittent contact scheme
Jiamei JIN, Jianhui ZHANG, Fu QIAN, Zhenfeng PAN,
期刊论文
The psychology of organizational and social sustainability
Wei-Tau LEE, Hao ZHANG, Kenneth H. FUNK II
期刊论文
Basic model study on efficiency evaluation in collaborative design work process
XIE Qiu, YANG Yu, LI Xiaoli, ZHAO Ningyu
期刊论文
Evaluation of the contract reliability for alternative infrastructure project delivery: a contract engineering
Bing WANG, Qingbin CUI, Shuibo ZHANG
期刊论文
Rheological behavior’s effect on the work performance of oil film
Zhaomiao LIU, Qiuying JIN, Chengyin ZHANG, Feng SHEN
期刊论文
Robotized machining of big work pieces: Localization of supporting heads
Wojciech SZYNKIEWICZ, Teresa ZIELIŃSKA, Włodzimierz KASPRZAK
期刊论文
A naive optimization method for multi-line systems with alternative machines
Weichang KONG, Fei QIAO, Qidi WU
期刊论文
High frequency of alternative splicing variants of the oncogene in neuroendocrine tumors of the pancreas
期刊论文
Making central-local relations work: Comparing America and China environmental governance systems
Dan GUTTMAN, SONG Yaqin
期刊论文
AGRI-ENVIRONMENTAL ASSESSMENT OF CONVENTIONAL AND ALTERNATIVE BIOENERGY CROPPING SYSTEMS PROMOTING BIOMASS
期刊论文
Alternative energy development strategies for China towards 2030
Linwei MA , Zheng LI , Feng FU , Weidou NI , Xiliang ZHANG ,
期刊论文
Experimental study of pollution effect on the behavior of high voltage insulators under alternative current
Hani BENGUESMIA, Nassima M’ZIOU, Ahmed BOUBAKEUR
期刊论文