资源类型

期刊论文 744

会议视频 39

会议信息 1

年份

2024 2

2023 47

2022 70

2021 70

2020 44

2019 56

2018 51

2017 73

2016 60

2015 39

2014 21

2013 22

2012 21

2011 21

2010 23

2009 22

2008 18

2007 20

2006 17

2005 10

展开 ︾

关键词

发展战略 17

能源 9

2035年 6

可持续发展 6

中国航天 5

中国铁路“走出去” 5

技术预见 5

2023全球十大工程成就 4

“走出去” 4

智能制造 4

2035 3

S-N曲线 3

WTO 3

信息技术 3

农业科学 3

工程科技 3

环境 3

经济 3

中国 2

展开 ︾

检索范围:

排序: 展示方式:

三峡库区航道建设中的航标遥测监控系统设计与实现

吴允平,李国祥,艾廷华,蔡声镇,王红,俞建林,李汪彪,杜杨文,刘华松,朱幌,苏伟达,吴进营

《中国工程科学》 2008年 第10卷 第11期   页码 18-22

摘要: 多层分级的数据处理方法,提高了终端的可靠性,功耗仅30 mA/4V;基于通用分组无线业务的虚拟专网(GPRS VPN)网络传送美国海运事业无线电委员会(RTCM)的差分数据,GPS定位精度达到0.9 m;基于S-5757标准并进行适当的拓展作为数据管理和交换平台,以满足内河应用需求。

关键词: 三峡库区     航标监控     双单片机架构     S-57     差分GPS    

Postnatal feeding with high-fat diet induces obesity and precocious puberty in C57BL/6J mouse pups: a

null

《医学前沿(英文)》 2017年 第11卷 第2期   页码 266-276 doi: 10.1007/s11684-017-0530-y

摘要:

Childhood obesity and obesity-related metabolic complications are induced by a high-fat postnatal diet. The lack of a suitable animal model, however, remains a considerable challenge in obesity studies. In the current study, we provided high-fat diet (HFD) to dams during lactation and to pups after weaning. We also developed a novel model of C57BL/6J mouse pups with HFD-induced postnatal obesity. Results showed that feeding with HFD induces fat deposition and obesity in pups. Furthermore, HFD more potently increased the body weight (BW) of male than female pups. HFD-fed female pups were obese, underwent precocious puberty, and showed increased kisspeptin expression in the hypothalamus. However, parental obesity and precocious puberty exerted no synergistic effects on the HFD-induced postnatal weight gain and puberty onset of the pups. Interestingly, some HFD-fed litters with normal BW also exhibited precocious puberty. This finding suggested that diet composition but not BW triggers puberty onset. Our model suggests good construction validity of obesity and precocious puberty. Furthermore, our model can also be used to explore the mutual interactions between diet–induced postnatal childhood obesity and puberty.

关键词: postnatal HFD feeding     obesity     kisspeptin     HPG axis     precocious puberty    

肠道菌群调控的色氨酸代谢改善了D-Gal/LPS诱导的C57BL/6小鼠急性肝衰竭 Article

郑志鹏, 伍莉, 韩玉秋, 陈俊, 朱帅, 姚圆圆, 王保红, 李兰娟

《工程(英文)》 2022年 第14卷 第7期   页码 134-146 doi: 10.1016/j.eng.2020.12.013

摘要: 肠道菌群16S rRNA测序发现,Abx重塑了肠道菌群的结构和功能,伴随肠道菌群的色氨酸(tryptophan, Trp)代谢通路增强。

关键词: 肠道菌群     抗生素     色氨酸     犬尿氨酸     芳香烃受体     急性肝衰竭    

Society for Neuroscience's 49th Annualmeeting

会议日期: 2019年10月19日

会议地点: 美国/伊利诺斯/芝加哥

主办单位: 美国神经科学学会

s Best Papers of 2015

《环境科学与工程前沿(英文)》 2016年 第10卷 第4期 doi: 10.1007/s11783-016-0858-6

Anion-exchange membrane direct ethanol fuel cells: Status and perspective

T.S. Zhao, Y.S. Li, S.Y. Shen

《能源前沿(英文)》 2010年 第4卷 第4期   页码 443-458 doi: 10.1007/s11708-010-0127-5

摘要: Direct ethanol fuel cells (DEFCs) are a promising carbon-neutral and sustainable power source for portable, mobile, and stationary applications. However, conventional DEFCs that use acid proton-exchange membranes (typically Nafion type) and platinum-based catalysts exhibit low performance (i.e., the state-of-the-art peak power density is 79.5 mW/cm at 90°C). Anion-exchange membrane (AEM) DEFCs that use low-cost AEM and non-platinum catalysts have recently been demonstrated to yield a much better performance (i.e., the state-of-the-art peak power density is 160 mW/cm at 80°C). This paper provides a comprehensive review of past research on the development of AEM DEFCs, including the aspects of catalysts, AEMs, and single-cell design and performance. Current and future research challenges are identified along with potential strategies to overcome them.

关键词: fuel cell     direct ethanol fuel cells     anion-exchange membrane     ethanol oxidation reaction     oxygen reduction reaction     cell performance    

Astrocytes in depression and Alzheimer’s disease

《医学前沿(英文)》 2021年 第15卷 第6期   页码 829-841 doi: 10.1007/s11684-021-0875-0

摘要: Astrocytes are an abundant subgroup of cells in the central nervous system (CNS) that play a critical role in controlling neuronal circuits involved in emotion, learning, and memory. In clinical cases, multiple chronic brain diseases may cause psychosocial and cognitive impairment, such as depression and Alzheimer’s disease (AD). For years, complex pathological conditions driven by depression and AD have been widely perceived to contribute to a high risk of disability, resulting in gradual loss of self-care ability, lower life qualities, and vast burden on human society. Interestingly, correlational research on depression and AD has shown that depression might be a prodrome of progressive degenerative neurological disease. As a kind of multifunctional glial cell in the CNS, astrocytes maintain physiological function via supporting neuronal cells, modulating pathologic niche, and regulating energy metabolism. Mounting evidence has shown that astrocytic dysfunction is involved in the progression of depression and AD. We herein review the current findings on the roles and mechanisms of astrocytes in the development of depression and AD, with an implication of potential therapeutic avenue for these diseases by targeting astrocytes.

关键词: astrocytes     depression     Alzheimer’s disease     roles     mechanisms    

FESE’s Best Papers of 2020

《环境科学与工程前沿(英文)》 2021年 第15卷 第3期 doi: 10.1007/s11783-021-1424-4

基于马尔可夫到达过程的两级可修备件(S-1,S)库存优化模型

陈 童,黎 放,狄 鹏

《中国工程科学》 2015年 第17卷 第5期   页码 113-119

摘要: ,采用马尔可夫到达过程(MAP)描述备件需求规律,考虑有限维修设施的情况,假设故障件维修时间、备件运输时间以及采购时间均服从phase-type(PH)分布,建立了一种描述能力更强、解析计算性更好的(S-1,S)库存优化模型,并推导出系统缺货量分布函数;然后通过算例演示了模型的优化效果,验证了模型的正确性和适用性。

关键词: S-1,S)库存策略;两级库存;可修备件;马尔可夫到达过程    

New Year’s Message for 2022

《环境科学与工程前沿(英文)》 2022年 第16卷 第1期   页码 14-14 doi: 10.1007/s11783-022-1538-3

摘要: 2022 marks the 15th anniversary of the journal of Frontiers of Environmental Science & Engineering (FESE). To date, FESE has received more than 5500 submissions from more than 80 countries and our acceptance rate is ~20%. FESE has also been providing a communication and development platform by increasing its editorial board, organizing conferences, and setting up awards. We are grateful for the support from authors, reviewers, readers, and editorial colleagues to jointly make FESE an internationally recognized journal in the Environmental Science and Engineering field. FESE is becoming an important and irreplaceable forum on environmental issues. Nowadays, environmental issues have attracted tremendous attention and they call for solutions to combat pollution, to achieve carbon neutrality, to tackle climate change, and to promote sustainable development. Accordingly, research is tackling more complex challenges and FESE is conveying knowledge and technological solutions to address these challenges. FESE will implement several new initiatives in 2022. First, FESE will further increase the quality of its publications and its services to the Environmental Science and Engineering community. Second, FESE will publish articles in a more timely fashion by publishing them on a monthly basis. Third, we will introduce a new article style, “Opinion,” that will broaden our perspectives and focus. Fourth, we have been launching the first Young Talent Award which will recognize promising investigators. 2022 will certainly be a year full of passion and expectations. Hereby, we hope that FESE will march toward a higher level with the hard work from editorial board members and editorial office, the continuous support from authors and reviewers, and the close collaborations among Chinese Academy of Engineering, Tsinghua University, Higher Education Press, Springer, and other organizations. Finally, we wish you all a happy, healthy, and fruitful 2022!

FESE’s Best Papers of 2021

《环境科学与工程前沿(英文)》 2022年 第16卷 第6期 doi: 10.1007/s11783-022-1561-4

FESE’s Best Papers of 2022

《环境科学与工程前沿(英文)》 2023年 第17卷 第6期 doi: 10.1007/s11783-023-1678-0

Exergy analysis and simulation of a 30MW cogeneration cycle

Nikhil Dev, Samsher, S. S. Kachhwaha, Rajesh Attri

《机械工程前沿(英文)》 2013年 第8卷 第2期   页码 169-180 doi: 10.1007/s11465-013-0263-9

摘要:

Cogeneration cycle is an efficient mean to recover the waste heat from the flue gases coming out of gas turbine. With the help of computer simulation, design parameters may be selected for the best performance of cogeneration cycle. In the present work a program is executed in software EES on the basis of mathematical modelling described in paper to study cogeneration cycle performance for different parameters. Results obtained are compared with the results available in literature and are found in good agreement with them. Real gas and water properties are inbuilt in the software. Results show that enthalpy of air entering the combustion chamber is higher than that of the flue gases at combustion chamber outlet. For different operative conditions, energy and exergy efficiencies follow similar trends; although, exergy efficiency values are always lower than the corresponding energy efficiency ones. From the results it is found that turbine outlet temperature (TIT) of 524°C is uniquely suited to efficient cogeneration cycle because it enables the transfer of heat from exhaust gas to the steam cycle to take place over a minimal temperature difference. This temperature range results in the maximum thermodynamic availability while operating with highest temperature and highest efficiency cogeneration cycle. Effect of cycle pressure ratio (CR), inlet air temperature (IAT) and water pressure at heat recovery steam generator (HRSG) inlet on the 30 MW cogeneration cycle is also studied.

关键词: Cogeneration cycle     air compressor     HRSG     gas turbine     regenerator     CR     IAT    

Development of environmental management system in China's financial sector

CHANG Miao, PENG Lijuan, WANG Shiwen

《环境科学与工程前沿(英文)》 2008年 第2卷 第2期   页码 172-177 doi: 10.1007/s11783-008-0032-x

摘要: The establishment of the environmental management system in the financial sector can be effectively promoted through the introduction of the environmental protection concept and its implementation by the financial sector. The impact of a sustainable development system on the sector is analyzed in this article from three aspects: environmental risk assessment, financing support for environmental protection projects, and financial services to environmentally friendly corporations and individuals. Influential factors on the development of the environmental management system in China’s financial sector are discussed from the perspective of various entities such as financial institutions, financial regulation authorities, environmental protection departments, corporations, and the public. It is pointed out that China’s financial sector is now in the transitional phase from a defensive attitude to a preventive attitude. Strengthening governmental guidance, the supervision of regulators as well as public awareness of environmental protection should be used to enhance the initiative in the development of the environmental management system in the Chinese financial sector.

关键词: perspective     s financial     financial     ’ s     transitional    

标题 作者 时间 类型 操作

三峡库区航道建设中的航标遥测监控系统设计与实现

吴允平,李国祥,艾廷华,蔡声镇,王红,俞建林,李汪彪,杜杨文,刘华松,朱幌,苏伟达,吴进营

期刊论文

Postnatal feeding with high-fat diet induces obesity and precocious puberty in C57BL/6J mouse pups: a

null

期刊论文

肠道菌群调控的色氨酸代谢改善了D-Gal/LPS诱导的C57BL/6小鼠急性肝衰竭

郑志鹏, 伍莉, 韩玉秋, 陈俊, 朱帅, 姚圆圆, 王保红, 李兰娟

期刊论文

Society for Neuroscience's 49th Annualmeeting

2019年10月19日

会议信息

RTS,S/AS01疟疾疫苗(英文)

2024年01月16日

会议视频

s Best Papers of 2015

期刊论文

Anion-exchange membrane direct ethanol fuel cells: Status and perspective

T.S. Zhao, Y.S. Li, S.Y. Shen

期刊论文

Astrocytes in depression and Alzheimer’s disease

期刊论文

FESE’s Best Papers of 2020

期刊论文

基于马尔可夫到达过程的两级可修备件(S-1,S)库存优化模型

陈 童,黎 放,狄 鹏

期刊论文

New Year’s Message for 2022

期刊论文

FESE’s Best Papers of 2021

期刊论文

FESE’s Best Papers of 2022

期刊论文

Exergy analysis and simulation of a 30MW cogeneration cycle

Nikhil Dev, Samsher, S. S. Kachhwaha, Rajesh Attri

期刊论文

Development of environmental management system in China's financial sector

CHANG Miao, PENG Lijuan, WANG Shiwen

期刊论文