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Increasing significance of advanced physical/chemical processes in the development and application of

RULKENS Wim

《环境科学与工程前沿(英文)》 2008年 第2卷 第4期   页码 385-396 doi: 10.1007/s11783-008-0073-1

摘要: The awareness of the problem of the scarcity of water of high quality has strongly changed the approach of wastewater treatment. Currently, there is an increasing need for the beneficial reuse of treated wastewater and to recover valuable products and energy from the wastewater. Because microbiological treatment methods are, only to a limited part, able to satisfy these needs, the role and significance of physical/chemical processes in wastewater treatment are gaining more and more interest. The specific future role and aim of the various physical/chemical treatment processes can be categorized in five groups: improvement of the performance of microbiological treatment processes, achievement of the high quality required for reuse of the effluent, recovery of valuable components and energy from the wastewater for beneficial reuse, desalination of brackish water and seawater, and treatment of concentrated liquid or solid waste residues produced in a wastewater treatment process. Development of more environmentally sustainable wastewater treatment chains in which physical/chemical processes play a crucial role, also requires application of process control and modeling strategies. This is briefly introduced by the elaboration of treatment scenarios for three specific wastewaters.

关键词: control     beneficial     valuable     scarcity     Development    

Application and development of modern long-span space structures in China

Shilin DONG, Yang ZHAO, Dong XING

《结构与土木工程前沿(英文)》 2012年 第6卷 第3期   页码 224-239 doi: 10.1007/s11709-012-0166-6

摘要: Modern long-span space structures, developed during the 1970s and 1980s, are light and effective structures based on new technologies and light-weight high-strength materials, such as membranes and steel cables. These structures include air-supported membrane structures, cable-membrane structures, cable truss structures, beam string structures, suspen-domes, cable domes, composite structures of cable dome and single-layer lattice shell, Tensairity structures and so forth. For the premodern space structures widely used since the mid-twentieth century (such as thin shells, space trusses, lattice shells and ordinary cable structures), new space structures have been developed by the combination of different structural forms and materials. The application of prestressing technology and the innovation of structural concepts and configurations are also associated with modern space structures, including composite space trusses, open-web grid structures, polyhedron space frame structures, partial double-layer lattice shells, cable-stayed grid structures, tree-type structures, prestressed segmental steel structures and so forth. This paper provides a review of the structural characteristics and practical applications in China of modern rigid space structures, modern flexible space structures and modern rigid-flexible combined space structures.

关键词: modern long-span space structures     rigid space structures     flexible space structures     rigid-flexible combined space structures     application and development    

Development and application of high-end aerospace MEMS

Weizheng YUAN

《机械工程前沿(英文)》 2017年 第12卷 第4期   页码 567-573 doi: 10.1007/s11465-017-0424-3

摘要:

This paper introduces the design and manufacturing technology of aerospace microelectromechanical systems (MEMS) characterized by high performance, multi-variety, and small batch. Moreover, several kinds of special MEMS devices with high precision, high reliability, and environmental adaptability, as well as their typical applications in the fields of aeronautics and aerospace, are presented.

关键词: MEMS     design and manufacture technology     aeronautic and aerospace    

Non-electric welding and its application on equipment under emergency conditions

HU Junzhi, HU Chunhua, MA Shining, XIN Wentong

《机械工程前沿(英文)》 2007年 第2卷 第2期   页码 239-242 doi: 10.1007/s11465-007-0042-6

摘要: This paper introduces the working principle, characteristics, development, welding techniques, and applications of non-electric welding. We analyzed the microstructure of the welding bead and the tensile strength of the non-electric welded joints. The results indicate that the welding technique is simple, the performance of the welding line is excellent, and that the application is broad. Therefore, non-electric welding shows favorable application value and potential prospect.

关键词: development     strength     technique     application     favorable application    

Base editors: development and applications in biomedicine

《医学前沿(英文)》 2023年 第17卷 第3期   页码 359-387 doi: 10.1007/s11684-023-1013-y

摘要: Base editor (BE) is a gene-editing tool developed by combining the CRISPR/Cas system with an individual deaminase, enabling precise single-base substitution in DNA or RNA without generating a DNA double-strand break (DSB) or requiring donor DNA templates in living cells. Base editors offer more precise and secure genome-editing effects than other conventional artificial nuclease systems, such as CRISPR/Cas9, as the DSB induced by Cas9 will cause severe damage to the genome. Thus, base editors have important applications in the field of biomedicine, including gene function investigation, directed protein evolution, genetic lineage tracing, disease modeling, and gene therapy. Since the development of the two main base editors, cytosine base editors (CBEs) and adenine base editors (ABEs), scientists have developed more than 100 optimized base editors with improved editing efficiency, precision, specificity, targeting scope, and capacity to be delivered in vivo, greatly enhancing their application potential in biomedicine. Here, we review the recent development of base editors, summarize their applications in the biomedical field, and discuss future perspectives and challenges for therapeutic applications.

关键词: base editing     CBE     ABE     ADAR     DdCBE     disease model     therapeutic application    

Application of Grading of Recommendations Assessment, Development, and Evaluation (GRADE) to the guidelinedevelopment for clinical practice with acupuncture and moxibustion

null

《医学前沿(英文)》 2017年 第11卷 第4期   页码 590-594 doi: 10.1007/s11684-017-0537-4

摘要:

Grading of Recommendations Assessment, Development, and Evaluation (GRADE) offers a worldwide approach to guideline development for clinical practice. For the clinical practice of acupuncture therapy, 18 evidence-based guidelines have been developed in China using GRADE. In this study, we review the advantages and limitations of the GRADE approach in the guideline development for acupuncture and moxibustion and propose some solutions to these limitations. Scientific advantages of rating the quality of evidence, outcome-centric direction, overall progression to develop recommendations, and strength of recommendations providing specific clinical guidance are the advantages of GRADE. The limitations of GRADE in the development of guidelines for acupuncture and moxibustion include rating the quality of evidence for ancient literature and literature on famous traditional Chinese medicine experts’ experiences and specific guidelines for formulating recommendations from evidence. In the guideline development for clinical practice with acupuncture and moxibustion, we suggest that a specific method should be explored based on the GRADE approach and the characteristics of acupuncture therapy.

关键词: guideline     acupuncture     GRADE    

The development and application of genome editing technology in ruminants: a review

Mengke YUAN, Yuanpeng GAO, Jing HAN, Teng WU, Jingcheng ZHANG, Yongke WEI, Yong ZHANG

《农业科学与工程前沿(英文)》 2020年 第7卷 第2期   页码 171-180 doi: 10.15302/J-FASE-2019302

摘要:

Transgenic ruminants are a valuable resource for both animal breeding and biomedical research. The development of transgenic breeding is proceeding slowly, because it suffers from low efficiency of gene transfer and possible safety problems from uncontrolled random integration. However, new breeding methods combined with genome editing and somatic cell nuclear transfer or microinjection can offer an economic and efficient way to produce gene-edited ruminants, which can serve as bioreactors or have improved disease resistance, animal welfare and product quality. Recent advances in precise genome editing technologies, especially clustered regularly interspaced short palindromic repeat (CRISPR)/Cas9 nucleases, are enabling the systematic development of gene-edited ruminant production. This review covers the development of gene-edited ruminants, the particulars of site-specific engineered nucleases and the state of the art and new insights into practical applications and social acceptance of genome editing technology in ruminants. It is concluded that the production of gene-edited ruminants is feasible and through improvements in genome editing technology it is possible to help feed the world.

关键词: bioreactors     breeding     engineered endonucleases     genome editing     ruminants    

Recent development and application of thin-film thermoelectric cooler

Yuedong Yu, Wei Zhu, Xixia Kong, Yaling Wang, Pengcheng Zhu, Yuan Deng

《化学科学与工程前沿(英文)》 2020年 第14卷 第4期   页码 492-503 doi: 10.1007/s11705-019-1829-9

摘要: Recently, the performance and fabrication of thin-film thermoelectric materials have been largely enhanced. Based on this enhancement, the thin-film thermoelectric cooler (TEC) is becoming a research hot topic, due to its high cooling flux and microchip level size. To fulfill a thin-film TEC, interfacial problems are unavoidable, as they may largely reduce the properties of a thin-film TEC. Moreover, the architecture of a thin-film TEC should also be properly designed. In this review, we introduced the enhancement of thermoelectric properties of (Bi,Sb) (Te,Se) solid solution materials by chemical vapor deposition, physical vapor deposition and electrodeposition. Then, the interfacial problems, including contact resistance, interfacial diffusion and thermal contact resistance, were discussed. Furthermore, the design, fabrication, as well as the performance of thin-film TECs were summarized.

关键词: thin-film thermoelectric cooler     interfaces     cooling flux     TE device fabrication    

Development and application of some renovated technologies for municipal wastewater treatment in China

QIAN Yi, WEN Xianghua, HUANG Xia

《环境科学与工程前沿(英文)》 2007年 第1卷 第1期   页码 1-12 doi: 10.1007/s11783-007-0001-9

摘要: China has been experiencing fast economic development in recent decades at the cost of serious environmental deterioration. Wastewater discharge, especially municipal wastewater discharge, and non-point pollution sources are becoming the major water pollution source and research focus. Great efforts have been made on water pollution control and a number of renovated technologies and processes for municipal wastewater treatment and reclamation as well as non-point pollution control have been developed and applied in China. This paper discusses the development and application of the appropriate technologies, including natural treatment systems, anaerobic biological treatment, biofilm reactors and wastewater reclamation technologies, for water pollution control in the country.

关键词: reclamation     Wastewater discharge     renovated     biological treatment     application    

An Evaluation Model for the Coordinated Development of a Circular Economy in China and Its Application

Ji-liang Zheng,Chen Zheng,Pan Chen,Ching Yuan Luk

《工程管理前沿(英文)》 2014年 第1卷 第4期   页码 364-371 doi: 10.15302/J-FEM-2014053

摘要: Energy-intensive industries (EIIs) are fundamental to the industrial development of China and are also the key industries of a circular economic infrastructure. It is worth paying attention to the coordinated development of a circular economy using EIIs due to the present interrelationship among EIIs. It is related to the optimization and comprehensive performance improvement of a circular economy. Based on the perspective of order parameter, this study uses economic and environmental subsystems to establish an evaluation model that examines the coordinated development of a circular economy within six main EIIs and an EII cluster from 2006 to 2011 in China. The result shows that the level of coordinated development in a circular economy among six EIIs differs and the level of coordinated development of circular economy among the EII cluster lags behind that of each EII examined. It also shows that the outside coordinated degree of EIIs is lower than the inside coordinated degree of each EII.

关键词: order parameter     coordinated degree evaluation     energy-intensive industry     circular economy    

RESEARCH AND APPLICATION OF CROP PEST MONITORING AND EARLY WARNING TECHNOLOGY IN CHINA

《农业科学与工程前沿(英文)》 2022年 第9卷 第1期   页码 19-36 doi: 10.15302/J-FASE-2021411

摘要:

The importance of food security, especially in combating the problem of acute hunger, has been underscored as a key component of sustainable development. Considering the major challenge of rapidly increasing demands for both food security and safety, the management and control of major pests is urged to secure supplies of major agricultural products. However, owing to global climate change, biological invasion (e.g., fall armyworm), decreasing agricultural biodiversity, and other factors, a wide range of crop pest outbreaks are becoming more frequent and serious, making China, one of the world’s largest country in terms of agricultural production, one of the primary victims of crop yield loss and the largest pesticide consumer in the world. Nevertheless, the use of science and technology in monitoring and early warning of major crop pests provides better pest management and acts as a fundamental part of an integrated plant protection strategy to achieve the goal of sustainable development of agriculture. This review summarizes the most fundamental information on pest monitoring and early warning in China by documenting the developmental history of research and application, Chinese laws and regulations related to plant protection, and the National Monitoring and Early Warning System, with the purpose of presenting the Chinese model as an example of how to promote regional management of crop pests, especially of cross border pests such as fall armyworm and locust, by international cooperation across pest-related countries.

 

关键词: China / law / early warning system and national crop pest monitoring / pest management / regulation and sustainable agricultural development    

APPLICATION AND DEVELOPMENT OF ‘GREEN’ PREVENTIVE AND CONTROL TECHNOLOGIES IN GUIZHOU TEA PLANTATIONS

《农业科学与工程前沿(英文)》 2022年 第9卷 第1期   页码 75-81 doi: 10.15302/J-FASE-2021424

摘要:

● Application of plant defense inducers against tea diseases.

关键词: ‘green’ prevention     natural enemies     plant defense inducers     tea plantations     Trifolium repens    

Development of MCBurn and its application in the analysis of SCWR physical characteristics

Ganglin YU , Kan WANG ,

《能源前沿(英文)》 2009年 第3卷 第3期   页码 348-352 doi: 10.1007/s11708-009-0031-z

摘要: The MCBurn, a coupled code system linking the Monte Carlo N-particle transport code(MCNP) and Oak Ridge isotope generation and depletion code (ORIGEN), can resolve the basic calculation problems in reactor physical design and analysis, such as criticality, power distribution, nuclide burn up, and neutron fluence. It has been verified in the pressurized water reactor (PWR) pin model, fast reactor (FR) burn up model, and boiling water reactor(BWR) assemble model with benchmarked results. In supercritical water reactor (SCWR) physical calculations, the calculation conditions such as the geometry, the neutron spectrum, and the fuel materials, etc., are more complex than those in traditional reactors, which is a great challenge to reactor physics calculation code. However, the MCBurn code is a possible solution. In this paper, several update functions of the MCBurn in new neutron cross-section lib, code interface, and neutron flux distribution were described. The application of the MCBurn in SCWR were verified on a supercritical water reactor assemble. The calculation results show that the MCBurn is accurate and adaptable in the SCWR calculation.

关键词: Monte Carlo method     MCBurn     SCWR     neutron cross-section lib    

统筹空间科学、空间技术、空间应用协调发展的思考

周建平,吴季

《中国工程科学》 2023年 第25卷 第2期   页码 59-66 doi: 10.15302/J-SSCAE-2023.02.007

摘要:

我国航天事业因历史原因和投入限制,在初期以空间技术、空间应用为主,对空间科学重视不足,空间科学、空间技术、空间应用基本上是独立发展的;着眼新时期航天强国建设,需要将空间技术的发展深度融合到空间科学、空间应用中去,从而创造新的机遇和成就。本文剖析了空间科学、空间技术、空间应用的基本内涵并明确三者的相互关系,在系统分析国际空间科学、空间技术、空间应用的整体态势,细致梳理我国相关领域发展情况的基础上,论证了统筹我国空间科学、空间技术、空间应用协调发展的必要性,凝练了三者协调发展面临的主要问题。空间科学、空间技术、空间应用之间既有需求交叉,又可互促带动,应在规划、部署、实施的全过程中进行统筹考虑:发挥新型举国体制优势,在统一管理下做好顶层规划;坚持创新驱动发展战略,以技术进步抢占国际航天制高点;支持空间领域基础研究,培育高水平的科学家和工程师队伍;加强资源统筹协调,促进空间应用数据的合理开放和充分利用。

关键词: 航天事业;空间科学;空间技术;空间应用;协调发展;数据开放共享    

APPLICATION AND DEVELOPMENT OF ‘GREEN’ PREVENTIVE AND CONTROL TECHNOLOGIES IN GUIZHOU TEA PLANTATIONS

《农业科学与工程前沿(英文)》 2022年 第9卷 第1期 doi: 0.15302/J-FASE-2021424

摘要:

The application and development of ‘green’ preventive technologies in tea plantations is an important means of ensuring tea quality and ecological safety. Ecological, agronomic and biological controls are the main preventive measures used in Guizhou Province. This paper summarizes the ‘green’ preventive technologies being applied in Guizhou tea plantations, including the use of plant defense inducers to regulate tea plant responses to pathogens, natural enemies to control pest species causing damage to shoots and Trifolium repens to control the main weed species. In addition, it summarizes the integrated ‘green’ preventive technologies being used in Guizhou and provides a foundation for the ecological maintenance of tea plantations. 

 

关键词: ‘green’ prevention / natural enemies / plant defense inducers / tea plantations / Trifolium repens    

标题 作者 时间 类型 操作

Increasing significance of advanced physical/chemical processes in the development and application of

RULKENS Wim

期刊论文

Application and development of modern long-span space structures in China

Shilin DONG, Yang ZHAO, Dong XING

期刊论文

Development and application of high-end aerospace MEMS

Weizheng YUAN

期刊论文

Non-electric welding and its application on equipment under emergency conditions

HU Junzhi, HU Chunhua, MA Shining, XIN Wentong

期刊论文

Base editors: development and applications in biomedicine

期刊论文

Application of Grading of Recommendations Assessment, Development, and Evaluation (GRADE) to the guidelinedevelopment for clinical practice with acupuncture and moxibustion

null

期刊论文

The development and application of genome editing technology in ruminants: a review

Mengke YUAN, Yuanpeng GAO, Jing HAN, Teng WU, Jingcheng ZHANG, Yongke WEI, Yong ZHANG

期刊论文

Recent development and application of thin-film thermoelectric cooler

Yuedong Yu, Wei Zhu, Xixia Kong, Yaling Wang, Pengcheng Zhu, Yuan Deng

期刊论文

Development and application of some renovated technologies for municipal wastewater treatment in China

QIAN Yi, WEN Xianghua, HUANG Xia

期刊论文

An Evaluation Model for the Coordinated Development of a Circular Economy in China and Its Application

Ji-liang Zheng,Chen Zheng,Pan Chen,Ching Yuan Luk

期刊论文

RESEARCH AND APPLICATION OF CROP PEST MONITORING AND EARLY WARNING TECHNOLOGY IN CHINA

期刊论文

APPLICATION AND DEVELOPMENT OF ‘GREEN’ PREVENTIVE AND CONTROL TECHNOLOGIES IN GUIZHOU TEA PLANTATIONS

期刊论文

Development of MCBurn and its application in the analysis of SCWR physical characteristics

Ganglin YU , Kan WANG ,

期刊论文

统筹空间科学、空间技术、空间应用协调发展的思考

周建平,吴季

期刊论文

APPLICATION AND DEVELOPMENT OF ‘GREEN’ PREVENTIVE AND CONTROL TECHNOLOGIES IN GUIZHOU TEA PLANTATIONS

期刊论文