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《化学科学与工程前沿(英文)》 2022年 第16卷 第3期 页码 443-460 doi: 10.1007/s11705-021-2079-1
关键词: Stöber method carbon-coated Ni-Co alloy in-situ hydrodeoxygenation methyl palmitate decarbonylation/decarboxylation
《化学科学与工程前沿(英文)》 2023年 第17卷 第2期 页码 139-155 doi: 10.1007/s11705-022-2217-4
关键词: extended Stöber method carbon encapsulated Ni–Sn intermetallic compounds confinement in-situ hydrothermal deoxygenation hydrogenation decarbonylation
Silk Roads for the 21st Century: Engineering Mega-Infrastructure for Development and Sustainability
Tony Marjoram
《工程管理前沿(英文)》 2016年 第3卷 第3期 页码 187-196 doi: 10.15302/J-FEM-2016038
关键词: infrastructure growth development sustainability change new Silk Roads
Digital manufacturing—the development direction of the manufacturing technology in the 21st century
XIONG You-lun, YIN Zhou-ping
《机械工程前沿(英文)》 2006年 第1卷 第2期 页码 125-130 doi: 10.1007/s11465-006-0021-3
关键词: development foundation multi-discipline scientific supporting
Livestock breeding for the 21st century: the promise of the editing revolution
Chris PROUDFOOT, Gus MCFARLANE, Bruce WHITELAW, Simon LILLICO
《农业科学与工程前沿(英文)》 2020年 第7卷 第2期 页码 129-135 doi: 10.15302/J-FASE-2019304
In recent years there has been a veritable explosion in the use of genome editors to create site-specific changes, both and , to the genomes of a multitude of species for both basic research and biotechnology. Livestock, which form a vital component of most societies, are no exception. While selective breeding has been hugely successful at enhancing some production traits, the rate of progress is often slow and is limited to variants that exist within the breeding population. Genome editing provides the potential to move traits between breeds, in a single generation, with no impact on existing productivity or to develop phenotypes that tackle intractable issues such as disease. As such, genome editors provide huge potential for ongoing livestock development programs in light of increased demand and disease challenge. This review will highlight some of the more notable agricultural applications of this technology in livestock.
Sustainable intensification of agriculture is key to feeding Africa in the 21st century
Shenggen FAN
《农业科学与工程前沿(英文)》 2020年 第7卷 第4期 页码 366-370 doi: 10.15302/J-FASE-2020342
Africa in facing numerous challenges in the 21st century in feeding its rapidly increasing population. Land resources have become limited due to urbanization and industrialization. The existing agricultural land has been degraded and soil fertility has declined due to unsustainable farming practices. Despite of progress made in the past several decades, hunger and malnutrition in Africa still hinder health, human development and economic growth, which will become even worse in the future if proper measures are not taken. Sustainable intensification is the only solution to tackling both environmental sustainability including climate change and malnutrition, i.e., to produce more foods in terms of nutrients human body needs with less natural resources and carbon emissions. To achieve this vision, innovations in technologies, policies and institutions are essential. The Chinese experience in Agricultural Green Development (AGD) can be shared with Africans when the region is pursuing its sustainable intensification strategy.
关键词: Africa sustainable intensification Agricultural Green Development climate change malnutrition
李传起,孙小菡,张明德,丁东
《中国工程科学》 2003年 第5卷 第4期 页码 50-54
给出了二维λ-t光正交方阵码2D-OOSC的设计方案, 重点讨论了2D-OOSC码字的相关性及码字参数对系统性能的影响。详细分析了2D-OOSC系统的用户容量以及由多用户干扰引起的误码性能。研究表明,在占用相同带宽的条件下,系统的用户容量远大于基于1D-OOC的WDM-CDMA混合系统,特别是在传输距离不太远的局域网中,光纤色散引起的传输损失较小。基于2D-OOSC地址码的 OCDMA系统有着现实的应用价值。
陈俊武
《中国工程科学》 2000年 第2卷 第4期 页码 21-24
文章从世界能源消费不断增长的社会发展需求出发,考虑日益苛刻的环境保护政策和举世关心的可持续发展的战略方针,结合今后科学技术的进展,分别从产品需求和资源供应、产品规格和环境保护、非常规石油进入角色及天然气前景引人瞩目四个专题进行论述,对21世纪的以石油和天然气为代表的非再生能源工业形势做了初步展望。
An Algorithm to compute damage from load in composites
DUNANT, Stéphane P. A. BORDAS, Pierre KERFRIDEN, Karen L. SCRIVENER, Timon RABCZUK
《结构与土木工程前沿(英文)》 2011年 第5卷 第2期 页码 180-193 doi: 10.1007/s11709-011-0107-9
关键词: Concrete damage prediction modelling energy minimisation ASR
Self-motions of 3-RPS manipulators
HUSTY, Stéphane CARO, Philippe WENGERY
《机械工程前沿(英文)》 2013年 第8卷 第1期 页码 62-69 doi: 10.1007/s11465-013-0366-3
Recently a complete kinematic description of the 3-RPS parallel manipulator was obtained using algebraic constraint equations. It turned out that the workspace splits into two components describing two kinematically different operation modes. In this paper the algebraic description is used to give a complete analysis of all possible self-motions of this manipulator in both operation modes. Furthermore it is shown that a transition from one operation mode into the other in a self-motion is possible.
蒋正华
《中国工程科学》 2002年 第4卷 第4期 页码 1-11
从管理学角度回顾了过去百年的世界历史,研究新世纪可能发生的进步,并探讨更好地建立 世界和平与合作,实现共同发展的方案。
赵宪文
《中国工程科学》 1999年 第1卷 第3期 页码 16-21
重点概述了近20年来林业遥感专家们为改进森林资源调查方法所作的诸多努力,如用卫星数据估计森林蓄积量、小块林地面积、以及森林郁闭度方法的研究、森林动态图的编制等。特别是上述方法在经过森林调查实际应用并进行效益分析后,提出的改进现行调查体系的建议。此外还提及了遥感用于评估、监测森林生态环境和森林灾害等方面取得的进展。对21世纪中国林业遥感前景进行了展望。作者认为下一个世纪中国林业遥感发展的主要方向是:包容各种新技术,形成新的技术体系,并与国际接轨;利用遥感的优势,研究森林的宏观状况与作用;与森林经营进一步结合。
Conrad BOTON, Éric ST-PIERRE, Gabriel LEFEBVRE
《工程管理前沿(英文)》 2020年 第7卷 第1期 页码 142-158 doi: 10.1007/s42524-019-0065-9
关键词: small- and medium-sized enterprises mobile computing mobile cloud computing information technology for construction construction site ethnographic action research
标题 作者 时间 类型 操作
Carbon-coated Ni-Co alloy catalysts: preparation and performance for aqueous phase hydrodeoxygenation of methyl palmitate to hydrocarbons using methanol as the hydrogen donor
期刊论文
Efficient hydrothermal deoxygenation of methyl palmitate to diesel-like hydrocarbons on carbon encapsulated Ni–Sn intermetallic compounds with methanol as hydrogen donor
期刊论文
Silk Roads for the 21st Century: Engineering Mega-Infrastructure for Development and Sustainability
Tony Marjoram
期刊论文
Digital manufacturing—the development direction of the manufacturing technology in the 21st century
XIONG You-lun, YIN Zhou-ping
期刊论文
Livestock breeding for the 21st century: the promise of the editing revolution
Chris PROUDFOOT, Gus MCFARLANE, Bruce WHITELAW, Simon LILLICO
期刊论文
Sustainable intensification of agriculture is key to feeding Africa in the 21st century
Shenggen FAN
期刊论文
An Algorithm to compute damage from load in composites
DUNANT, Stéphane P. A. BORDAS, Pierre KERFRIDEN, Karen L. SCRIVENER, Timon RABCZUK
期刊论文