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A fast and accurate dynamic relaxation scheme
Mohammad REZAIEE-PAJAND, Mohammad MOHAMMADI-KHATAMI
《结构与土木工程前沿(英文)》 2019年 第13卷 第1期 页码 176-189 doi: 10.1007/s11709-018-0486-2
关键词: viscous dynamic relaxation time step displacement error geometric nonlinear analysis
Analysis of flow over backward facing step with transition
Dwarikanath RATHA,Arindam SARKAR
《结构与土木工程前沿(英文)》 2015年 第9卷 第1期 页码 71-81 doi: 10.1007/s11709-014-0270-x
关键词: Reattachment length backward facing step transition flow separation k-? model
One-step synthesis of recoverable CuCo
Tongzhou Lu, Yongzheng Zhang, Chun Cheng, Yanbin Wang, Yongming Zhu
《化学科学与工程前沿(英文)》 2020年 第14卷 第4期 页码 595-604 doi: 10.1007/s11705-019-1818-z
关键词: copper cobalt sulfide recoverability one-step hydrothermal method anode material Li-ion battery
温俊峰
《中国工程科学》 2000年 第2卷 第3期 页码 23-26
文章简要论述了航空发动机发展的两种途径及其特点,从国内外航空发动机改进发展广泛采用的作 法和成功的经验事例,论证了“渐改”发展模式的规律性和重要性,提出了对发动机改进发展应加强组织领导和计划落实的建议。
一款基于改进的步进式译码算法实现的流水线架构RS码译码器 Article
Xing-ru PENG,Wei ZHANG,Yan-yan LIU
《信息与电子工程前沿(英文)》 2016年 第17卷 第9期 页码 954-961 doi: 10.1631/FITEE.1500303
Microplastics removal strategies: A step toward finding the solution
《环境科学与工程前沿(英文)》 2022年 第16卷 第1期 页码 7-7 doi: 10.1007/s11783-021-1441-3
Microplastics are an emerging threat and a big challenge for the environment. The presence of microplastics (MPs) in water is life-threatening to diverse organisms of aquatic ecosystems. Hence, the scientific community is exploring deeper to find treatment and removal options of MPs. Various physical, chemical and biological methods are researched for MPs removal, among which few have shown good efficiency in the laboratory. These methods also have a few limitations in environmental conditions. Other than finding a suitable method, the creation of legal restrictions at a governmental level by imposing policies against MPs is still a daunting task in many countries. This review is an effort to place all effectual MP removal methods in one document to compare the mechanisms, efficiency, advantages, and disadvantages and find the best solution.
关键词: Aquatic Coagulation Microplastics Plastic Water Treatment Plant Wastewater
Practical consideration for design and optimization of the step feed process
Shijian GE, Yongzhen PENG, Congcong LU, Shuying WANG
《环境科学与工程前沿(英文)》 2013年 第7卷 第1期 页码 135-142 doi: 10.1007/s11783-012-0454-3
关键词: step feed anoxic/oxic (A/O) University of Cape Town (UCT) simultaneous nitrification and denitrification (SND) denitrifying phosphorus removal biological nutrient removal (BNR)
一种基于多因素分析和多模型集成的海洋溶解氧浓度时间序列预测混合神经网络模型 Article
刘辉, 杨睿, 段铸, 吴海平
《工程(英文)》 2021年 第7卷 第12期 页码 1751-1765 doi: 10.1016/j.eng.2020.10.023
溶解氧是水产养殖的重要指标,准确预测溶解氧浓度可有效提高水产品质量。本文提出了一种新的溶解氧混合预测模型,该模型包括多因素分析、自适应分解和优化集成三个阶段。首先,考虑到影响溶解氧浓度的因素复杂繁多,采用灰色关联度法筛选出与溶解氧关系最密切的环境因素,多因素的考虑使得模型融合更加有效。其次,运用经验小波变换方法自适应地将溶解氧、水温、盐度和氧饱和度等序列分解为子序列。然后,利用5个基准模型对经验小波变换分解出的子序列进行预测,这五个子预测模型的集成权重通过粒子群优化和引力搜索算法计算得出。最后,通过加权分配得到溶解氧多因素集成模型。来自太平洋岛屿海洋观测系统希洛WQB04站收集的时间序列数据验证了该模型的性能。实验的评价指标包括Nash-Sutcliffe效率系数、Kling-Gupta效率系数、平均绝对百分比误差、误差标准差和决定系数。实例分析表明:①所提出的模型能够获得优异的溶解氧预测结果;②该模型优于文中其他对比模型;③预测模型可用于分析溶解氧变化趋势,便于管理者能够做出更好的决策。
Kuiyi YOU, Fangfang ZHAO, Xueyan LONG, Pingle LIU, Qiuhong AI, Hean LUO
《化学科学与工程前沿(英文)》 2012年 第6卷 第4期 页码 389-394 doi: 10.1007/s11705-012-1218-0
关键词:
cyclohexane
Two-step hydrothermal conversion of biomass waste to humic acid using hydrochar as intermediate
《环境科学与工程前沿(英文)》 2023年 第17卷 第10期 doi: 10.1007/s11783-023-1719-8
关键词: Biowaste Hydrochar Humic acid Hydrothermal parameter Unsaturation
Error measurement and assemble error correction of a 3D-step-gauge
MAO Xinyong, LI Bin, SHI Hanmin, LIU Hongqi, LI Xi, LI Peigen
《机械工程前沿(英文)》 2007年 第2卷 第4期 页码 388-393 doi: 10.1007/s11465-007-0067-x
Novel precision piezoelectric step rotary actuator
LIU Jianfang, YANG Zhigang, ZHAO Hongwei, CHENG Guangming
《机械工程前沿(英文)》 2007年 第2卷 第3期 页码 356-360 doi: 10.1007/s11465-007-0062-2
关键词: developed stability ineffective anchoring/loosening technology piezoelectric
Bin MA, Shuying WANG, Guibing ZHU, Shijian GE, Junmin WANG, Nanqi Ren, Yongzhen PENG
《环境科学与工程前沿(英文)》 2013年 第7卷 第2期 页码 267-272 doi: 10.1007/s11783-012-0439-2
关键词: denitrifying phosphate accumulating organisms (DPAOs) denitrification phosphorus uptake nitrite step-feed enhanced biological phosphorus removal
Nanopositioning and Nonlinearity Compensation for Step Imprint Lithography Tool
LU Bing-heng, LIU Hong-zhong, DING Yu-cheng, WANG Li, QIU Zhi-hui
《机械工程前沿(英文)》 2006年 第1卷 第1期 页码 6-13 doi: 10.1007/s11465-005-0003-x
In this paper, the motion mode and nanopositioning accuracy in the step imprinting lithography process are presented, and the positioning errors different from the traditional errors, such as the gap error existing in the hinges of the stage structure and the random error produced during the process of the stage position adjustment, are analyzed. To avoid and eliminate these nonlinearity errors, radial basis function proportional integral derivative and position control algorithms are introduced into the macroand microdriving processes, respectively. The innovation of this driving method is that the motion locus is monotone, nonoscillatory, and a multistep approaching target, which eliminates the root of the random error by single direction driving mode and avoids the backlash error through preloading function. Driving experiments of different motion ranges prove that this nonlinearity compensation is very effective and the positioning accuracy during the step imprinting process can be improved up to 10 nm.
关键词: different nonoscillatory nonlinearity integral derivative positioning
标题 作者 时间 类型 操作
A fast and accurate dynamic relaxation scheme
Mohammad REZAIEE-PAJAND, Mohammad MOHAMMADI-KHATAMI
期刊论文
One-step synthesis of recoverable CuCo
Tongzhou Lu, Yongzheng Zhang, Chun Cheng, Yanbin Wang, Yongming Zhu
期刊论文
Practical consideration for design and optimization of the step feed process
Shijian GE, Yongzhen PENG, Congcong LU, Shuying WANG
期刊论文
Two-step hydrothermal conversion of biomass waste to humic acid using hydrochar as intermediate
期刊论文
Error measurement and assemble error correction of a 3D-step-gauge
MAO Xinyong, LI Bin, SHI Hanmin, LIU Hongqi, LI Xi, LI Peigen
期刊论文
Novel precision piezoelectric step rotary actuator
LIU Jianfang, YANG Zhigang, ZHAO Hongwei, CHENG Guangming
期刊论文
Denitrification and phosphorus uptake by DPAOs using nitrite as an electron acceptor by step-feed strategies
Bin MA, Shuying WANG, Guibing ZHU, Shijian GE, Junmin WANG, Nanqi Ren, Yongzhen PENG
期刊论文