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Chemisorption solid materials for hydrogen storage near ambient temperature: a review
Yiheng ZHANG, Shaofei WU, Liwei WANG, Xuefeng ZHANG
《能源前沿(英文)》 2023年 第17卷 第1期 页码 72-101 doi: 10.1007/s11708-022-0835-7
关键词: hydrogen storage capacity chemisorption near-ambient-temperature modification methods alloy hydrides
《环境科学与工程前沿(英文)》 2023年 第17卷 第9期 doi: 10.1007/s11783-023-1705-1
● A study assessing the temperature-injury relationship was conducted among students.
关键词: Ambient temperature Fall Road traffic injury Student China
Prediction of the theoretical and semi-empirical model of ambient temperature
Foued CHABANE,Noureddine MOUMMI,Abdelhafid BRIMA,Abdelhafid MOUMMI
《能源前沿(英文)》 2016年 第10卷 第3期 页码 268-276 doi: 10.1007/s11708-016-0413-y
关键词: ambient temperature environment correlation theoretical model semi-empirical
Rencheng Zhu, Jingnan Hu, Liqiang He, Lei Zu, Xiaofeng Bao, Yitu Lai, Sheng Su
《环境科学与工程前沿(英文)》 2021年 第15卷 第1期 doi: 10.1007/s11783-020-1306-1
关键词: Particle mass Particle number Black carbon Alcohol gasoline Low temperature
Numerical investigation on side heat transfer enhancement in 300 kA aluminum reduction cell
WANG Changhong, ZHU Dongsheng, LEI Junxi, ZHOU Jiemin
《能源前沿(英文)》 2008年 第2卷 第3期 页码 256-260 doi: 10.1007/s11708-008-0051-0
关键词: constant ambient temperature thickness electrolytic temperature transfer process
O. S. OHUNAKIN, M. S. ADARAMOLA, O. M. OYEWOLA, R. O. FAGBENLE
《能源前沿(英文)》 2013年 第7卷 第2期 页码 214-222 doi: 10.1007/s11708-013-0241-2
关键词: global solar radiation Hargreaves model sunshine hour ambient temperatures Osogbo
Study on the Path of “Near-zero Emission” Coal-based Clean Energy Ecosystem Development
Zhang Yu-zhuo
《工程管理前沿(英文)》 2014年 第1卷 第1期 页码 37-41 doi: 10.15302/J-FEM-2014007
关键词: near-zero emission clean energy ecosystem study on the path
Research and industrialization of near-net rolling technology used in shaft parts
Zhenghuan HU, Baoyu WANG, Zhenhua ZHENG
《机械工程前沿(英文)》 2018年 第13卷 第1期 页码 17-24 doi: 10.1007/s11465-018-0480-3
Shaft part rolling is an efficient and green near-net shaping technology offering many advantages, including high production efficiency, high material utilization rate, high product quality, and excellent production environment. In this paper, the features of shaft part rolling are introduced along with the working principles of two main shaft part rolling technologies, namely, cross wedge rolling (CWR) and skew rolling (SR). In relation to this technology, some R&D achievements gained by the University of Science and Technology Beijing are summarized. Finally, the latest developments in shaft part rolling are presented, including SR steel balls, precise forming of camshaft blank by CWR, SR phosphorous copper balls at room temperature, and CWR hollow axle sleeve. Although the shaft part rolling technology has been widely used in China, it only accounts for about 15% of applicable parts at present. Nevertheless, this technology has broad application prospects.
关键词: cross wedge rolling skew rolling near-net rolling shaft part
Special issue: Near-net shaping technology
Dequn LI, Dongming GUO, Qingxue HUANG, Yanchun LOU
《机械工程前沿(英文)》 2018年 第13卷 第1期 页码 1-2 doi: 10.1007/s11465-018-0497-7
《环境科学与工程前沿(英文)》 2022年 第16卷 第4期 doi: 10.1007/s11783-021-1475-6
• The concentrations of 13 heavy metals in Taihu Lake were analyzed.
关键词: Heavy metals Human health ambient water quality criteria Taihu Lake Health risk assessment Contribution rate
Determining casting defects in near-net shape casting aluminum parts by computed tomography
Jiehua LI, Bernd OBERDORFER, Daniel HABE, Peter SCHUMACHER
《机械工程前沿(英文)》 2018年 第13卷 第1期 页码 48-52 doi: 10.1007/s11465-018-0493-y
Three types of near-net shape casting aluminum parts were investigated by computed tomography to determine casting defects and evaluate quality. The first, second, and third parts were produced by low-pressure die casting (Al-12Si-0.8Cu-0.5Fe-0.9Mg-0.7Ni-0.2Zn alloy), die casting (A356, Al-7Si-0.3Mg), and semi-solid casting (A356, Al-7Si-0.3Mg), respectively. Unlike die casting (second part), low-pressure die casting (first part) significantly reduced the formation of casting defects (i.e., porosity) due to its smooth filling and solidification under pressure. No significant casting defect was observed in the third part, and this absence of defects indicates that semi-solid casting could produce high-quality near-net shape casting aluminum parts. Moreover, casting defects were mostly distributed along the eutectic grain boundaries. This finding reveals that refinement of eutectic grains is necessary to optimize the distribution of casting defects and reduce their size. This investigation demonstrated that computed tomography is an efficient method to determine casting defects in near-net shape casting aluminum parts.
关键词: near-net shape casting aluminum parts casting defects low pressure die casting die casting semi-solid casting computed tomography
Factors influencing near infrared spectroscopy analysis of agro-products: a review
Xiao XU, Lijuan XIE, Yibin YING
《农业科学与工程前沿(英文)》 2019年 第6卷 第2期 页码 105-115 doi: 10.15302/J-FASE-2019255
The near infrared (NIR) spectroscopy technique has wide applications in agriculture with the advantages of being nondestructive, sensitive, safe and rapid. However, there are still more than 40 error sources influencing the robustness and accuracy of its calibration and operation. Environmental, sample and instrument factors that influence the analysis are discussed in this review, including temperature, humidity and other factors that introduce uncertainty. Error sources from livestock products, fruit and vegetables, which are the most common objects in the field of NIR analysis, are also emphasized in the second part. In addition, studies utilizing different instruments, spectral pretreatments, variable selection methods, wavelength ranges, detection modes and calibration methods are tabulated to illustrate the complications they introduce and how they influence NIR analysis. It is suggested that large scale of data with abundant varieties can be used to build a more robust calibration model, in order to improve the robustness and accuracy of the NIR analytical model, and overcome problems caused by confining analysis to too many uniform samples.
关键词: agro-product error source influence factor near infrared spectroscopy
Hygroscopicity of ambient submicron particles in urban Hangzhou, China
Jiachen ZHANG, Lin WANG, Jianmin CHEN, Shengmao FENG, Jiandong SHEN, Li JIAO
《环境科学与工程前沿(英文)》 2011年 第5卷 第3期 页码 342-347 doi: 10.1007/s11783-011-0358-7
关键词: hygroscopicity hygroscopic tandem differential mobility analyzer (H-TDMA) submicron ambient particles Hangzhou
Guizhong XIE,Dehai ZHANG,Jianming ZHANG,Fannian MENG,Wenliao DU,Xiaoyu WEN
《机械工程前沿(英文)》 2016年 第11卷 第4期 页码 412-422 doi: 10.1007/s11465-016-0396-8
As a widely used numerical method, boundary element method (BEM) is efficient for computer aided engineering (CAE). However, boundary integrals with near singularity need to be calculated accurately and efficiently to implement BEM for CAE analysis on thin bodies successfully. In this paper, the distance in the denominator of the fundamental solution is first designed as an equivalent form using approximate expansion and the original sinh method can be revised into a new form considering the minimum distance and the approximate expansion. Second, the acquisition of the projection point by Newton-Raphson method is introduced. We acquire the nearest point between the source point and element edge by solving a cubic equation if the location of the projection point is outside the element, where boundary integrals with near singularity appear. Finally, the subtriangles of the local coordinate space are mapped into the integration space and the sinh method is applied in the integration space. The revised sinh method can be directly performed in the integration element. A verification test of our method is proposed. Results demonstrate that our method is effective for regularizing the boundary integrals with near singularity.
关键词: computer aided engineering (CAE) boundary element method (BEM) near singularity sinh method coordinate transformation integration space
Effect of ambient polycyclic aromatic hydrocarbons and nicotine on the structure of Aβ protein
《环境科学与工程前沿(英文)》 2023年 第17卷 第2期 doi: 10.1007/s11783-023-1615-2
● B[a]P, nicotine and phenanthrene molecules altered the secondary structure of Aβ42.
关键词: Polycyclic aromatic hydrocarbons Nicotine toxicology Aβ42 peptide Alzheimer’s disease Molecular dynamics simulations Environmental pollution
标题 作者 时间 类型 操作
Chemisorption solid materials for hydrogen storage near ambient temperature: a review
Yiheng ZHANG, Shaofei WU, Liwei WANG, Xuefeng ZHANG
期刊论文
Evaluating the short-term effect of ambient temperature on non-fatal outdoor falls and road traffic injuries
期刊论文
Prediction of the theoretical and semi-empirical model of ambient temperature
Foued CHABANE,Noureddine MOUMMI,Abdelhafid BRIMA,Abdelhafid MOUMMI
期刊论文
Effects of ambient temperature on regulated gaseous and particulate emissions from gasoline-, E10- and
Rencheng Zhu, Jingnan Hu, Liqiang He, Lei Zu, Xiaofeng Bao, Yitu Lai, Sheng Su
期刊论文
Numerical investigation on side heat transfer enhancement in 300 kA aluminum reduction cell
WANG Changhong, ZHU Dongsheng, LEI Junxi, ZHOU Jiemin
期刊论文
Correlations for estimating solar radiation using sunshine hours and temperature measurement in Osogbo
O. S. OHUNAKIN, M. S. ADARAMOLA, O. M. OYEWOLA, R. O. FAGBENLE
期刊论文
Study on the Path of “Near-zero Emission” Coal-based Clean Energy Ecosystem Development
Zhang Yu-zhuo
期刊论文
Research and industrialization of near-net rolling technology used in shaft parts
Zhenghuan HU, Baoyu WANG, Zhenhua ZHENG
期刊论文
Human health ambient water quality criteria for 13 heavy metals and health risk assessment in Taihu Lake
期刊论文
Determining casting defects in near-net shape casting aluminum parts by computed tomography
Jiehua LI, Bernd OBERDORFER, Daniel HABE, Peter SCHUMACHER
期刊论文
Factors influencing near infrared spectroscopy analysis of agro-products: a review
Xiao XU, Lijuan XIE, Yibin YING
期刊论文
Hygroscopicity of ambient submicron particles in urban Hangzhou, China
Jiachen ZHANG, Lin WANG, Jianmin CHEN, Shengmao FENG, Jiandong SHEN, Li JIAO
期刊论文
Implementation of sinh method in integration space for boundary integrals with near singularity in potential
Guizhong XIE,Dehai ZHANG,Jianming ZHANG,Fannian MENG,Wenliao DU,Xiaoyu WEN
期刊论文