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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)
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
Lu LI, Shuguang XIE, Hui ZHANG, Donghui WEN
《环境科学与工程前沿(英文)》 2009年 第3卷 第1期 页码 38-47 doi: 10.1007/s11783-009-0007-6
关键词: step-feed biological contact oxidation process (SBCOP) inter-recycle biological contact oxidation process (IBCOP) river water removal efficiency nitrogen transformation the Dianchi Lake watershed
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
Identification of thermal error in a feed system based on multi-class LS-SVM
Chao JIN, Bo WU, Youmin HU, Yao CHENG
《机械工程前沿(英文)》 2012年 第7卷 第1期 页码 47-54 doi: 10.1007/s11465-012-0307-6
Research of thermal characteristics has been a key issue in the development of high-speed feed system. The thermal positioning error of a ball-screw is one of the most important objects to consider for high-accuracy and high-speed machine tools. The research work undertaken herein ultimately aims at the development of a comprehensive thermal error identification model with high accuracy and robust. Using multi-class least squares support vector machines (LS-SVM), the thermal positioning error of the feed system is identified with the variance and mean square value of the temperatures of supporting bearings and screw-nut as feature vector. A series of experiments were carried out on a self-made quasi high-speed feed system experimental bench HUST-FS-001 to verify the identification capacity of the presented method. The results show that the recommended model can be used to predict the thermal error of a feed system with good accuracy, which is better than the ordinary BP and RBF neural network. The work described in this paper lays a solid foundation of thermal error prediction and compensation in a feed system.
关键词: least squares support vector machine (LS-SVM) feed system thermal error precision machining
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
《结构与土木工程前沿(英文)》 2021年 第15卷 第6期 页码 1453-1479 doi: 10.1007/s11709-021-0767-z
关键词: damage detection deep feed-forward neural networks functionally graded carbon nanotube-reinforced composite plates modal kinetic energy
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
INTERCROPPING: FEED MORE PEOPLE AND BUILD MORE SUSTAINABLE AGROECOSYSTEMS
《农业科学与工程前沿(英文)》 2021年 第8卷 第3期 页码 373-386 doi: 10.15302/J-FASE -2021398
Intercropping is a traditional farming system that increases crop diversity to strengthen agroecosystem functions while decreasing chemical inputs and minimizing negative environmental effects of crop production. Intercropping is currently considerable interest because of its importance in sustainable agriculture. Here, we synthesize the factors that make intercropping a sustainable means of food production by integrating biodiversity of natural ecosystems and crop diversity. In addition to well-known yield increases, intercropping can also increase yield stability over the long term and increase systemic resistance to plant diseases, pests and other unfavorable factors (e.g. nutrient deficiencies). The efficient use of resources can save mineral fertilizer inputs, reduce environmental pollution risks and greenhouse gas emissions caused by agriculture, thus mitigating global climate change. Intercropping potentially increases above- and below-ground biodiversity of various taxa at field scale, consequently it enhances ecosystem services. Complementarity and selection effects allow a better understanding the mechanisms behind enhanced ecosystem functioning. The development of mechanization is essential for large-scale application of intercropping. Agroecosystem multifunctionality and soil health should be priority topics in future research on intercropping.
关键词: agroecosystems , crop diversity ,intercropping,interspecific interactions,sustainable agriculture
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
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
Min SU, Lin WANG, Hua SUN, Jingkang WANG
《化学科学与工程前沿(英文)》 2009年 第3卷 第3期 页码 282-288 doi: 10.1007/s11705-009-0018-7
关键词: 6-aminopenicillanic acid crystallization double-feeding FBRM PVM crystal habit
null
《农业科学与工程前沿(英文)》 2019年 第6卷 第4期 页码 443-444 doi: 10.15302/J-FASE-2019288
张子仪
《中国工程科学》 2001年 第3卷 第7期 页码 30-36
上个世纪末,我国饲料工业总产量比改革开放前增长了近70倍。1999年全国配合饲料合格率也从20世纪80年代的40%~60%提高到95.7%,这是一个巨大的成就。但目前饲料工业标准化工作则相对滞后。入世以后,我国饲料工业标准化体系将面临着与国际质量管理和质量保证标准的接轨以及与环境管理系列标准的配套问题。为此,在近期内应把握时机,及时作好我国饲料工业标准化工作水平的提高及更新换代。当前应重点抓紧饲料安全性标准的增删与修订。对饲料卫生标准、饲料原料标准、饲料质量监测技术及生物学效价评定等方面的标准必须全国统一;而对饲养标准则应因地制宜分类设置,根据具体情况可以跨省区设一类饲养标准,也可以在一个省或区设多种类型的饲养标准。
当前,饲料市场各个流通环节中的法制建设任务仍然十分艰巨。要坚决杜绝一切有损社会、生态效益的饲料添加剂进入市场;特别要严密监视国外活菌制剂类饲料及一切激素类饲料添加剂非法进入我国市场。要加强保护我国目前尚保留着的大面积净土;要为合法的、科学的饲料添加剂正名。这是争创“中国产绿色产品”品牌,提高我国饲料工业产品市场竞争能力的重要保证。
关键词: 饲料工业 标准化工作 安全性 国际环境管理系列标准 饲养标准
标题 作者 时间 类型 操作
Practical consideration for design and optimization of the step feed process
Shijian GE, Yongzhen PENG, Congcong LU, Shuying WANG
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
Field experiment on biological contact oxidation process to treat polluted river water in the Dianchi Lake watershed
Lu LI, Shuguang XIE, Hui ZHANG, Donghui WEN
期刊论文
Identification of thermal error in a feed system based on multi-class LS-SVM
Chao JIN, Bo WU, Youmin HU, Yao CHENG
期刊论文
One-step synthesis of recoverable CuCo
Tongzhou Lu, Yongzheng Zhang, Chun Cheng, Yanbin Wang, Yongming Zhu
期刊论文
A deep feed-forward neural network for damage detection in functionally graded carbon nanotube-reinforced
期刊论文
FBRM and PVM investigations of the double feed semi-batch crystallization of 6-aminopenicillanic acid
Min SU, Lin WANG, Hua SUN, Jingkang WANG
期刊论文
Comments on “Adaptation of Chinese and German maize-based food-feed-energy systems to limited phosphate
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期刊论文