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2,629 条 记 录,以下是 1-30

Machine learning assisted design of high entropy alloys with desired property
ACTA MATERIALIAWen, Cheng Zhang, Yan Wang, Changxin Xue, Dezhen Bai, Yang Antonov, Stoichko Dai, Lanhong Lookman, Turab Su, Yanjing  出版年:2019
We formulate a materials design strategy combining a machine learning (ML) surrogate model with experimental design algorithms to search for high entropy alloys (HEAs) with large hardness in a model Al-Co-Cr-Cu-Fe-Ni sys...
Modeling solid solution strengthening in high entropy alloys using machine learning
ACTA MATERIALIAWen, Cheng Wang, Changxin Zhang, Yan Antonov, Stoichko Xue, Dezhen Lookman, Turab Su, Yanjing  出版年:2021
Solid solution strengthening (SSS) influences the exceptional mechanical properties of single-phase high entropy alloys (HEAs). Thus, given the vast compositional space, identifying the underlying factors that control SS...
烟气酸露点温度的影响因素及其计算方法
《工业锅炉》贾明生 凌长明  出版年:2003
确定烟气露点温度 ,已成为避免低温受热面造成腐蚀、增加锅炉运行安全性和提高锅炉效率的关键所在。文章对影响烟气酸露点的主要因素进行了分析 ,对几种烟气酸露点温度的计算方法进行了对比和评价 ,并依据酸露点的图表数据 。
关键词:锅炉  低温腐蚀  烟气  酸露点温度  计算方法  被引量:100
溴化锂水溶液的几个主要物性参数计算方程
《湛江海洋大学学报》贾明生  出版年:2002
通过对溴化锂水溶液物性的实测数据进行回归分析 ,提出了溴化锂水溶液的平衡方程及粘度系数、结晶温度、密度、定压比热容、比焓等物性参数计算方程。回归和归纳出的方程中最大的相对误差为6 42 % ,平均相对误差均不超过 1 ...
关键词:溴化锂水溶液  溴化锂  物性在数  计算方程  多项式回归  制冷剂  被引量:90
Water jet impact damage mechanism and dynamic penetration energy absorption of 2A12 aluminum alloy
VACUUMZhang, Ping Liu, Zehua Yue, Xiujie Wang, Penghao Zhai, Yanchun  出版年:2022
This study aims to explore the waterjet cavitation impact (WCI) mechanism of 2A12 aluminum alloy and its dynamic penetration energy absorption after WCI treatment. The effects of WCI process parameters on the re-sidual s...
荔枝果肉热风干燥薄层模型
《农业机械学报》关志强 王秀芝 李敏 蒋小强 谢晶  出版年:2012
利用热泵干燥装置探讨了热风温度和热风风速对荔枝果肉干燥水分比MR和干燥速率U的影响。结果表明:荔枝果肉薄层热风干燥是内部水分扩散控制的降速干燥过程。对9种常见食品薄层干燥模型进行试验数据非线性拟合,通过比较评价决定系数R...
关键词:荔枝果肉  热泵干燥  干燥特性  薄层干燥模型  被引量:86
Three-dimensional discrete particle model for gas-solid fluidized beds on unstructured mesh
CHEMICAL ENGINEERING JOURNALWu, C. L. Berrouk, A. S. Nandakumar, K.  出版年:2009
A robust three-dimensional discrete particle model (3D DPM) for unstructured meshes is presented to model the gas-solid flows in fluidized beds. The finite volume method is used to discretize the governing equations of t...
East Asian Summer Monsoon variations in the past 12.5ka: High-resolution δ18O record from a precisely dated aragonite stalagmite in central China
Journal of Asian Earth SciencesZhang H.-L. Yu K.-F. Zhao J.-X. Feng Y.-X. Lin Y.-S. Zhou W. Liu G.-H.  出版年:2013
Due to possible aragonite to calcite transformation resulting in alteration in isotopic signatures and a bias in age-dating, aragonite speleothems are often excluded from paleoclimatic archives. However, aragonite stalag...
A review of the thermal stability of metastable austenite in steels: Martensite formation
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGYLi, Yong San Martin, David Wang, Jinliang Wang, Chenchong Xu, Wei  出版年:2021
Metastable austenite plays a critical role in achieving improved combinations of high strength and high ductility/toughness in the design of advanced high-strength steels (AHSS). The thermal stability of metastable auste...
East Asian Summer Monsoon variations in the past 12.5 ka: High-resolution δ<SUP>18</SUP>O record from a precisely dated aragonite stalagmite in central China
JOURNAL OF ASIAN EARTH SCIENCESZhang, Hui-Ling Yu, Ke-Fu Zhao, Jian-Xin Feng, Yue-Xing Lin, Yu-Shi Zhou, Wei Liu, Guo-Hui  出版年:2013
Due to possible aragonite to calcite transformation resulting in alteration in isotopic signatures and a bias in age-dating, aragonite speleothems are often excluded from paleoclimatic archives. However, aragonite stalag...
Detection and counting of banana bunches by integrating deep learning and classic image-processing algorithms
COMPUTERS AND ELECTRONICS IN AGRICULTUREWu, Fengyun Yang, Zhou Mo, Xingkang Wu, Zihao Tang, Wei Duan, Jieli Zou, Xiangjun  出版年:2023
Robots must first detect the number of banana bunches when making judgements on sterile bud removal and estimating weight for harvest in the field environment. Banana bunches are complex in shape, arranged in a nonlinear...
Performance optimization of solar humidification-dehumidification desalination process using Pinch technology
DESALINATIONHou, SB Ye, SQ Zhang, HF  出版年:2005
This paper presents a method of performance optimization of solar humidification-dehumidification desalination (HDD) process using Pinch technology. Pinch technology is used in the humidification process to determine the...
Wavenumber prediction and measurement of axisymmetric waves in buried fluid-filled pipes: Inclusion of shear coupling at a lubricated pipe/soil interface
JOURNAL OF SOUND AND VIBRATIONMuggleton, J. M. Yan, J.  出版年:2013
Acoustic methods have been widely used to detect water leaks in buried fluid-filled pipes, and these technologies also have the potential to locate buried pipes and cables. Relatively predictable for metal pipes, there i...
Effect of heat treatment process on the micro machinability of 7075 aluminum alloy
VACUUMZhang, Ping Liu, Junling Gao, Yeran Liu, Zehua Mai, Qingqun  出版年:2023
This work aims to investigate the effect of heat treatment process on the micro machinability of 7075 aluminum alloy,7075 aluminum alloy was treated with T6, T73 and RRA.T6 single-stage aging process is 120 degrees C x 2...
Short-time performance of composite-medium line-source model for predicting responses of ground heat exchangers with single U-shaped tube
INTERNATIONAL JOURNAL OF THERMAL SCIENCESYang, Yi Li, Min  出版年:2014
A composite-medium line-source model has been recently developed for modeling short-time thermal processes of borehole ground heat exchangers. The composite-medium line-source model is attractive for applications where t...
Planning feed speed in cold ring rolling
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTUREYan, Feng-Lin Hua, Lin Wu, Yong-Qiao  出版年:2007
Feed speed needs to be controlled during cold ring rolling but first it must be planned. However, up to now, it has been set mainly by trials and experience, as the existing method is inefficient. This paper aims to find...
Controlled synthesis and characterization of large-scale, uniform Dy(OH)<sub>3</sub> and DY<sub>2</sub>O<sub>3</sub> single-crystal nanorods by a hydrothermal method
NANOTECHNOLOGYWang, G Wang, ZD Zhang, YX Fei, GT Zhang, LD  出版年:2004
Large-scale and uniform Dy(OH)(3) nanorods have been successfully prepared by a simple hydrothermal method. Subsequent thermal decomposition of the as-prepared Dy(OH)3 nanorods produced Dy2O3 nanorods. X-ray diffraction ...
A robust and self-powered tilt sensor based on annular liquid-solid interfacing triboelectric nanogenerator for ship attitude sensing
SENSORS AND ACTUATORS A-PHYSICALWang, Song Wang, Yan Liu, Dehua Zhang, Ziyi Li, Wenxiang Liu, Changxin Du, Taili Xiao, Xiu Song, Liguo Pang, Hongchen Xu, Minyi  出版年:2021
Ship's attitude information is of great significance for navigation safety, cargo handling monitoring, and operation management. It is highly desired to develop an electromechanical integrated tilt sensor which can work ...
多指标综合评价方法研究综述
《机电产品开发与创新》李鹏 俞国燕  出版年:2009
在分析现有相关文献的基础上,重点对当前利用神经网络、粗糙集、熵与模糊数学等理论的新综合评价方法进行了归类与总结,最后对综合评价方法的发展方向作了展望。
关键词:多指标综合评价  权重确定  神经网络  粗糙集  熵  被引量:57
Influence of microwave power, metal oxides and metal salts on the pyrolysis of algae
BIORESOURCE TECHNOLOGYLi Longjun Ma Xiaoqian Xu Qing Hu Zhifeng  出版年:2013
The work was to investigate the influence of microwave power, metal oxides and metal salts onto the pyrolysis of algae (4.55 wt.% moisture). It was found that the heating rate and the final temperature would increase as ...
Accurate void fraction calculation for three-dimensional discrete particle model on unstructured mesh
CHEMICAL ENGINEERING SCIENCEWu, C. L. Zhan, J. M. Li, Y. S. Lam, K. S. Berrouk, A. S.  出版年:2009
An accurate and efficient analytical method for computing the three-dimensional local void fraction is proposed in the context of discrete particle modeling. it is developed for the general case of unstructured meshes wh...
Experimental and numerical investigations of shell-side thermo-hydraulic performances for shell-and-tube heat exchanger with trefoil-hole baffles
APPLIED THERMAL ENGINEERINGYou, Yonghua Fan, Aiwu Lai, Xuejiang Huang, Suyi Liu, Wei  出版年:2013
Orifice plates have been developed as the support of tubes for shell-and-tube heat exchangers, however, very few related academic literature are available. In the present work, we experimentally investigate the shell-sid...
三江源地区生态系统生态功能分析及其价值评估
《环境科学学报》刘敏超 李迪强 温琰茂 栾晓峰  出版年:2005
在地理信息系统的支持下,将相关地图数字化并利用已有的地形数据库等资料,研究了三江源地区生态系统土壤保持、涵养水源、固定CO2和释放O2等4项生态功能,并利用市场价值法、机会成本法和影子工程法等评估了其生态功能的价值.研究...
关键词:三江源地区  生态功能  价值评估  空间分析  被引量:53
Effect of aging plus cryogenic treatment on the machinability of 7075 aluminum alloy
VACUUMZhang, Ping Liu, Zehua Liu, Junling Yu, Jiang Mai, Qingqun Yue, Xiujie  出版年:2023
This work aims to explore the effect of aging plus cryogenic treatment on the machinability of 7075 aluminum alloy in high speed cutting. First, 7075 aluminum alloy samples are pretreated by T6 and T6I4. Then they are cr...
Two-stage solar multi-effect humidification dehumidification desalination process plotted from pinch analysis
DESALINATIONHou, Shaobo  出版年:2008
This paper presents a two-stage solar multi-effect humidification dehumidification desalination process plotted from pinch analysis. The sketch of two-stage solar multi-effect humidification dehumidification desalination...
Microstructure and property of SiC coating for carbon materials
FUSION ENGINEERING AND DESIGNZhao, Juan Wang, Gui Guo, Quangui Liu, Lang  出版年:2007
SiC coating has been developed on four kinds of carbon substrates using a slurry-sintering method. The relationship between the microstructure and property of SiC coating and carbon substrates was investigated experiment...
Disinfection efficacy of ultraviolet germicidal irradiation on airborne bacteria in ventilation ducts
INDOOR AIRYang, Yi Zhang, Huihui Nunayon, Sunday Segbenu Chan, Vincent Lai, Alvin C. K.  出版年:2018
A full-scale ventilation duct ultraviolet germicidal irradiation (in-duct UVGI) system was designed to investigate its disinfection efficacy on five airborne pathogens: Serratia marcescens, Pseudomonas alcaligenes, Esche...
Exergy analysis of the solar multi-effect humidification-dehumidification desalination process
DESALINATIONHou, Shaobo Zeng, Dongqi Ye, Shengquan Zhang, Hefei  出版年:2007
An exergy analysis method is presented of the solar multi-effect humidification-dehumidification desalination (HDD) process. Pinch technology is used in the humidification process to determine the maximum possible satura...
A kinetic study on the effects of alkaline earth and alkali metal compounds for catalytic pyrolysis of microalgae using thermogravimetry
APPLIED THERMAL ENGINEERINGXu, Qing Ma, Xiaoqian Yu, Zhaosheng Cai, Zilin  出版年:2014
In this paper, thermogravimetric (TG) analysis and kinetic modeling are applied to study the effects of alkaline earth and alkali metal compounds on catalytic thermal decomposition of microalgae. When alkaline earth and ...
Dense particulate flow model on unstructured mesh
CHEMICAL ENGINEERING SCIENCEWu, C.L. Zhan, J.M. Li, Y.S. Lam, K.S.  出版年:2006
A numerical method based on two-dimensional (2D) unstructured meshes is developed to solve the discrete particle model (DPM). Interparticle interactions are taken into account for dense particulate flows, which are descr...
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