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PORK PRODUCTION SYSTEMS IN CHINA:A REVIEW OF THEIR DEVELOPMENT,CHALLENGES AND PROSPECTS IN GREEN PRODUCTION

Frontiers of Agricultural Science and Engineering 2021年第1期8卷 15-24页

作者： Shuai ZHANG Xin WU Dandan HAN Yong HOU Jianzhuang TAN Sung Woo KIM Defa LI Yulong YIN Junjun WANG State Key Laboratory of Animal Nutrition Ministry of Agriculture and Rural Affairs Feed Industry CentreCollege of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China Key Laboratory of Agro-ecological Processes in the Subtropical Region Institute of Subtropical Agriculturethe Chinese Academy of SciencesNational Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionHunan Provincial Engineering Research Center for Healthy Livestock and Poultry ProductionScientific Observation and Experimental Station of Animal Nutrition and Feed Science in the South-Central RegionMinistry of Agriculture and Rural AffairsChangsha 410125China College of resources and Environmental Sciences National Academy of Agriculture Green DevelopmentKey Laboratory of Plant-Soil Interactions(Ministry of Education)China Agricultural UniversityBeijing 100193China Tech-bank Food Co. LtdNanjing 211800China Department of Animal Science College of Agriculture and Life SciencesNorth Carolina State UniversityRaleighNC 27695USA

This paper reviews the changes in pork production in China,the largest pork producing and consuming nation in the *** pork sector in China has changed dramatically since the 1990s,with large-scale intensive pork production systems replacing the former,exclusively family-based pork production *** breeding,feeding,vaccinating,and management technologies are widely used ***,smallholders still account for a large proportion of the total *** intensification and specialization of the pork sector is expected to continue in the future,but there is increasing awareness and pressure to develop more environmentally-sustainable production *** relative shortage of domestically produced feed,the low utilization efficiency of feed ingredients,the large emissions of nitrogen and phosphorus to the environment,the high use of antibiotics,and the presence of residual metals in manures are very large challenges for the pork sector *** solve these problems,techniques including new feed resource utilization,precise feeding,low-protein diets,alternatives to antibiotics and increased manure recycling are all important topics and research directions *** new techniques and management approaches,it is possible to build more sustainable pork production systems in China.

关键词： China feed pork production sustainability

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Innovations of phosphorus sustainability:implications for the whole chain

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Frontiers of Agricultural Science and Engineering 2019年第4期6卷 321-331页

作者： Jianbo SHEN Liyang WANG Xiaoqiang JIAO Fanlei MENG Lin ZHANG Gu FENG Junling ZHANG Lixing YUAN Lin MA Yong HOU Tao ZHANG Weifeng ZHANG Guohua LI Kai ZHANG Fusuo ZHANG National Academy of Agriculture Green Development Key Laboratory of Plant-Soil InteractionsMinistry of EducationCollege of Resources and Environmental SciencesChina Agricultural UniversityBeijing 100193China Key Laboratory of Agricultural Water resources Center for Agricultural Resources ResearchInstitute of Genetic and Developmental BiologyChinese Academy of SciencesShijiazhuang 050021China Department of Environmental Science and Engineering College of Resources and Environmental SciencesChina Agricultural UniversityBeijing 100193China

Phosphorus(P)is a non-renewable resource,therefore ensuring global food and environmental security depends upon sustainable P *** achieve this goal,sustainable P management in the upstream and downstream sectors of agriculture from mineral extraction to food consumption must be addressed *** innovation and feasibility of P sustainability are highlighted from the perspective of the whole P-based chain,including the mining and processing of P rock,production of P fertilizers,soil and rhizosphere processes involving P,absorption and utilization of P by plants,P in livestock production,as well as flow and management of P at the catchment *** paper also emphasizes the importance of recycling P and the current challenges of P ***,sustainable solutions of holistic P management are proposed from the perspective of technology improvement with policy support.

关键词： P-use efficiency recycling sustainable management the whole Pchain

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生物来源的类玻璃弹性体助力完全可持续性的摩擦纳米发电机

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Science China Materials 2023年第3期66卷 1089-1096页

作者：陈硕郭一凡孙利杰孙巍 Rasoul Esmaeely Neisiany 陈玮昱管清宝游正伟 State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Institute of Functional MaterialsCollege of Materials Science and EngineeringResearch Base of Textile Materials for Flexible Electronics and Biomedical Applications(China Textile Engineering Society)Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative MedicineDonghua UniversityShanghai 201620China Department of Materials and Polymer Engineering Faculty of EngineeringHakim Sabzevari UniversitySabzevar ***Iran

具有生物来源、“绿色”制备、稳定的力学和电学性能、可循环利用、可降解的摩擦纳米发电机在绿色能源收集和可穿戴器件应用中意义重大,但是其制备仍存在挑战.据此,本工作发展了具有优异的弹性、生物降解性和可循环性的生物基类玻璃弹... 详细信息

具有生物来源、“绿色”制备、稳定的力学和电学性能、可循环利用、可降解的摩擦纳米发电机在绿色能源收集和可穿戴器件应用中意义重大,但是其制备仍存在挑战.据此,本工作发展了具有优异的弹性、生物降解性和可循环性的生物基类玻璃弹性体来应对上述挑战.我们以弹性体和碳纳米管为原料通过盐粒辅助的3D打印技术制备了具有多级孔结构的摩擦纳米发电机.该摩擦纳米发电机表现出优异的力学和电能输出性能,并能够通过光致加工手段实现回收再利用;而废弃的摩擦纳米发电机也能够通过弹性体的降解和碳纳米管的回收,有效节约资源和减少污染.本工作为完全可持续性摩擦纳米发电机提供了一个新的范例,对可持续性电子器件的发展具有一定的启发意义.

关键词：摩擦纳米发电机多级孔结构可循环利用回收再利用生物降解性可持续性弹性体可穿戴器件

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Preface

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Journal of Iron and Steel Research International 2023年第8期30卷 1461-1462页

作者： Yan-xin Qiao Hao-kun Yang Zhi-bin Zheng Tang-qing Wu School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212100JiangsuChina Smart Manufacturing Division(SMD) Hong Kong Productivity CouncilHong Kong 999077China Institute of New Materials Guangdong Academy of SciencesNational Engineering Research Center of Powder Metallurgy of Titanium&Rare MetalsGuangdong Provincial Key Laboratory of Metal Toughening Technology and ApplicationGuangzhou 510650GuangdongChina School of Materials Science and Engineering Xiangtan UniversityXiangtan 411105HunanChina

The guest editors are pleased to present the upcoming August issue of the Journal of Iron and Steel Research International as a special issue on"Corrosion and wear of materials in extreme environments".This issue is proposed to collect the current development of energy resource usage with high working *** effective methods include enhancement of power engine and/or battery,reduction in the critical equipment and/or component mass,as well as the adoption of clean energy,utilized in the field of heavy industries.

关键词： wear battery utilized

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