资源类型

期刊论文 573

会议视频 19

会议信息 2

会议专题 1

年份

2024 1

2023 39

2022 45

2021 46

2020 41

2019 31

2018 33

2017 45

2016 44

2015 21

2014 21

2013 16

2012 10

2011 14

2010 10

2009 19

2008 24

2007 19

2006 9

2005 14

展开 ︾

关键词

工程科技 8

钱学森 8

2035年 6

技术预见 6

系统科学 5

信息技术 4

开放的复杂巨系统 4

思维科学 4

人工智能 3

关键技术 3

工程 3

战略研究 3

颠覆性技术 3

“一带一路” 2

三峡工程 2

乳液 2

从定性到定量综合集成法 2

内禀尺度 2

农业科技创新 2

展开 ︾

检索范围:

排序: 展示方式:

工程过程中分子间和表面间相互作用 Review

张嘉文, 曾宏波

《工程(英文)》 2021年 第7卷 第1期   页码 63-83 doi: 10.1016/j.eng.2020.08.017

摘要:

在复杂流体中,化学试剂、固体颗粒、气泡、液滴和固体表面间的相互作用在许多工程过程中起着至关重要的作用,如泡沫浮选、乳液和泡沫形成、吸附、污垢、防污现象等。这些在分子、纳米和微观尺度上的相互作用显著地影响并决定了相关工程过程的宏观性能和效率。理解工程过程中的分子间和表面间相互作用具有基础和实际意义,这不仅改善了生产技术,而且为新材料的开发提供了有价值的见解。本文首先介绍了各种工程过程中涉及的典型分子间和表面间相互作用,包括Derjaguin-Landau-Verwey-Overbeek(DLVO)相互作用(即范德华相互作用和双电层相互作用)和非DLVO相互作用(如空间位阻和疏水相互作用)。本文简要介绍了用于测量复杂流体中分子间和表面间相互作用力的原子力显微镜和表面力仪等纳米力学技术;综述了近年来我们对矿物浮选、石油工程、废水处理、储能材料这些工程体系中分子间和表面间相互作用的研究进展;讨论了这些基本相互作用机制与解决工程挑战中的实际应用之间的相关性,并对未来的研究领域进行前景展望。

 

关键词: 分子间和表面间相互作用     胶体     乳液     界面科学     工程过程     原子力显微镜     表面力仪    

Towards an integrated modeling of the plasma-solid interface

Michael Bonitz, Alexey Filinov, Jan-Willem Abraham, Karsten Balzer, Hanno Kählert, Eckhard Pehlke, Franz X. Bronold, Matthias Pamperin, Markus Becker, Dettlef Loffhagen, Holger Fehske

《化学科学与工程前沿(英文)》 2019年 第13卷 第2期   页码 201-237 doi: 10.1007/s11705-019-1793-4

摘要: Solids facing a plasma are a common situation in many astrophysical systems and laboratory setups. Moreover, many plasma technology applications rely on the control of the plasma-surface interaction, i.e., of the particle, momentum and energy fluxes across the plasma-solid interface. However, presently often a fundamental understanding of them is missing, so most technological applications are being developed via trial and error. The reason is that the physical processes at the interface of a low-temperature plasma and a solid are extremely complex, involving a large number of elementary processes in the plasma, in the solid as well as fluxes across the interface. An accurate theoretical treatment of these processes is very difficult due to the vastly different system properties on both sides of the interface: Quantum versus classical behavior of electrons in the solid and plasma, respectively; as well as the dramatically differing electron densities, length and time scales. Moreover, often the system is far from equilibrium. In the majority of plasma simulations surface processes are either neglected or treated via phenomenological parameters such as sticking coefficients, sputter rates or secondary electron emission coefficients. However, those parameters are known only in some cases and with very limited accuracy. Similarly, while surface physics simulations have often studied the impact of single ions or neutrals, so far, the influence of a plasma medium and correlations between successive impacts have not been taken into account. Such an approach, necessarily neglects the mutual influences between plasma and solid surface and cannot have predictive power. In this paper we discuss in some detail the physical processes of the plasma-solid interface which brings us to the necessity of coupled plasma-solid simulations. We briefly summarize relevant theoretical methods from solid state and surface physics that are suitable to contribute to such an approach and identify four methods. The first are mesoscopic simulations such as kinetic Monte Carlo and molecular dynamics that are able to treat complex processes on large scales but neglect electronic effects. The second are quantum kinetic methods based on the quantum Boltzmann equation that give access to a more accurate treatment of surface processes using simplifying models for the solid. The third approach are simulations of surface process that are based on density functional theory (DFT) and time-dependent DFT. The fourths are nonequilibrium Green functions that able to treat correlation effects in the material and at the interface. The price for the increased quality is a dramatic increase of computational effort and a restriction to short time and length scales. We conclude that, presently, none of the four methods is capable of providing a complete picture of the processes at the interface. Instead, each of them provides complementary information, and we discuss possible combinations.

关键词: plasma physics     surface science     plasma-surface modeling     DFT     nonequilibrium Green functions    

钱学森论地理科学

马蔼乃

《中国工程科学》 2002年 第4卷 第1期   页码 1-8

摘要:

钱学森在现代人类知识体系11个门类中,将地理科学归结为自然科学与社会科学之间的桥梁科学;在五大开放的复杂巨系统中,把地理系统排在星系系统与社会系统之间;在社会总体设计部下设四大建设中,将地理建设与政治文明、物质文明、精神文明建设并列。钱学森把地理科学看做是举足轻重的科学体系。钱学森从哲学高度,从人类知识体系的高度,从复杂性系统科学的理论框架中,从社会总体设计工程的实践出发,把地理学提升到为国民经济服务的科学,因此,地理科学具有重要的理论与实践意义,必须重新认识地理。

关键词: 地理科学     理论地理科学     地理信息科学     地理系统工程    

对我国现代工程科学技术发展的思考

赵少奎,杨永太

《中国工程科学》 2001年 第3卷 第1期   页码 22-30

摘要:

在概要地讨论了科学技术发展历程的基础上,阐述了“现代管理科学”、“现代系统科学”和“复杂性科学”对现代工程科学技术发展的重要作用,并论述了我国工程科学技术发展中值得重视的几个问题。

关键词: 工程科学技术     现代管理科学     现代系统科学     复杂性科学    

Bridging science, technology and policy in emerging contaminants control

《环境科学与工程前沿(英文)》 2023年 第17卷 第5期 doi: 10.1007/s11783-023-1665-5

Cell surface protein engineering for high-performance whole-cell catalysts

Hajime Nakatani,Katsutoshi Hori

《化学科学与工程前沿(英文)》 2017年 第11卷 第1期   页码 46-57 doi: 10.1007/s11705-017-1609-3

摘要: Cell surface protein engineering facilitated by accumulation of information on genome and protein structure involves heterologous production and modification of cell surface proteins using genetic engineering, and is important for the development of high-performance whole-cell catalysts. In this field, cell surface display is a major technology by exposing target proteins, such as enzymes, on the cell surface using a carrier protein. The target proteins are fused to the carrier proteins that transport and tether them to the cell surface, as well as to a secretion signal. This paper reviews cell surface display systems for prokaryotic and eukaryotic cells from the perspective of carrier proteins, which determine the number of displayed molecules, and the localization, size, and direction ( or terminal anchoring) of the passengers. We also discuss advanced methods for displaying multiple enzymes and a new method for the immobilization of whole-cell catalysts using adhesive surface proteins.

关键词: cell surface engineering     surface display     whole-cell catalysts     bioprocess    

矿山安全减灾系统科学——矿山灾害学

周利华

《中国工程科学》 2003年 第5卷 第7期   页码 90-94

摘要:

矿山灾害学是一门综合性强并需不断扩充的矿山安全减灾科学。它与以往单一矿山灾害防治理论研究相比,具有综合性、预测性和经济性三大特征;它的安全减灾原理包含了安全哲学、安全经济学等八大原理;它的研究模型体现了宏观与微观相统一的原则。因此,矿山灾害学的研究,应以科学的系统论思想为指导,采用逻辑与历史相统一法,既要从微观上研究矿山灾害中单一灾种事故的防治技术和方法,又要在宏观上从不同学科、不同层次、不同的方位切入,对矿山灾害进行系统的研究;与此同时,还必须大力开展多层次、多领域、多方位的国际协作。

关键词: 矿山灾害     矿山安全     矿山灾害学    

Engineering Fronts in fields of Energy and Electrical Science and Technologies in the report of

《能源前沿(英文)》 2023年 第17卷 第1期   页码 5-8 doi: 10.1007/s11708-023-0868-6

摘要: . {{custom_ra.content}} . . . {{article.highlightEn}} . . . {{article.abstractEn}} . . . {{article.authorSummayEn}} .

钱学森与思维科学

卢明森

《中国工程科学》 2002年 第4卷 第2期   页码 8-15

摘要:

文章分析了钱学森倡导建立思维科学的背景和必要性,介绍了钱学森关于思维科学研究的对象、基本道路、思想来源的一系列论述,阐述了钱学森倡导建立的思维科学是现代科学技术体系中的11个大部门之一,它包含基础科学、技术科学与工程技术三个层次,分别介绍了各个层次近20年来所取得的初步成果。

关键词: 认知科学     思维科学     抽象思维     形象思维     创造性思维     模式识别    

An Exploration of Surface Integrity Remanufacturing for Aeroengine Components

Qiao Xiang,Yong He,Ting-hong Hou

《工程管理前沿(英文)》 2016年 第3卷 第2期   页码 107-114 doi: 10.15302/J-FEM-2016025

摘要: Surface integrity is the major factor impacting on the operation quality, service life and reliability of the aeroengine components. The surface integrity of aeroengine component is damaged by the failures such as crack, deformation, oxidation, corrosion, erosion, and microstructural degeneration. It adopts advanced remanufacturing technologies to restore or improve the surface integrity and regenerate these high value parts. This paper firstly puts forward the concept, namely surface integrity remanufacturing for aeroengine components, and its connotation. The key remanufacturing technologies have been developed to repair the components with surface damages. Ultimately, some application examples of surface integrity remanufacturing technologies as well as their effects in aeroengine maintenance are introduced. The discarded components have been reused and their service lives have been extended and their reliability has been increased by implementing surface integrity remanufacturing. It has realized “The Repaired Components Outpacing the New Ones”, material saving, energy saving, and emission reduction.

关键词: aeroengine component     surface integrity     remanufacturing     surface integrity remanufacturing    

技术科学的发展与技术科学的社会价值

黄志澄

《中国工程科学》 2003年 第5卷 第1期   页码 10-14

摘要:

文章首先介绍钱学森先生关于技术科学的论述,重点从信息科学的发展,讨论了近代技术科学发展的特点,在这个基础上, 从应用价值、文化价值和精神价值等方面,进一步探讨了技术科学的社会价值。

关键词: 钱学森     技术科学     信息科学     系统科学     科学、技术与社会     社会价值    

Review on mechanism and process of surface polishing using lasers

Arun KRISHNAN, Fengzhou FANG

《机械工程前沿(英文)》 2019年 第14卷 第3期   页码 299-319 doi: 10.1007/s11465-019-0535-0

摘要: Laser polishing is a technology of smoothening the surface of various materials with highly intense laser beams. When these beams impact on the material surface to be polished, the surface starts to be melted due to the high temperature. The melted material is then relocated from the ‘peaks to valleys’ under the multidirectional action of surface tension. By varying the process parameters such as beam intensity, energy density, spot diameter, and feed rate, different rates of surface roughness can be achieved. High precision polishing of surfaces can be done using laser process. Currently, laser polishing has extended its applications from photonics to molds as well as bio-medical sectors. Conventional polishing techniques have many drawbacks such as less capability of polishing freeform surfaces, environmental pollution, long processing time, and health hazards for the operators. Laser polishing on the other hand eliminates all the mentioned drawbacks and comes as a promising technology that can be relied for smoothening of initial topography of the surfaces irrespective of the complexity of the surface. Majority of the researchers performed laser polishing on materials such as steel, titanium, and its alloys because of its low cost and reliability. This article gives a detailed overview of the laser polishing mechanism by explaining various process parameters briefly to get a better understanding about the entire polishing process. The advantages and applications are also explained clearly to have a good knowledge about the importance of laser polishing in the future.

关键词: laser polishing     surface roughness     process parameters     mechanism    

Unconventional energy: Seeking the ways to innovate energy science and technology

Jing LIU, Zhixiong GUO

《能源前沿(英文)》 2018年 第12卷 第2期   页码 195-197 doi: 10.1007/s11708-018-0568-9

极地系统科学考察——大科学系统工程管理探索

陈立奇

《中国工程科学》 2004年 第6卷 第2期   页码 1-7

摘要:

人与地球系统之间的相互作用已成为全球变化的重要驱动力,极地系统是感应全球变化的放大器和指示器极地系统科学进入了一个大科学研究时代。极地系统科学不但是一门研究极地系统对全球变化的响应与反馈作用中运转的机制、规律和控制这些变化的机理,并为区域复杂性及其对全球变化预测提供科学基础的科学,同时也是一门高新技术应用和人类认识自然活动并科学管理极地系统的系统工程学。20年来,中国科学家对极地系统复杂性有了深入的认识,对极地科学考察管理也进行了有益的探索。

关键词: 全球变化科学     极地系统科学     系统工程管理    

Emerging contaminant control: From science to action

《环境科学与工程前沿(英文)》 2022年 第16卷 第6期 doi: 10.1007/s11783-022-1559-y

摘要: Since the concept of emerging contaminants (ECs) was first proposed in 2001, the global scientific research of ECs has developed rapidly. In the past decades, great progress has been achieved in the scientific research of ECs in China, including the establishment of EC analysis method system, the evaluation of the pollution status, pollution characteristics and environmental risk of ECs in typical regions of China, and establishment of EC control technology system. Continuous progress in scientific research of ECs promoted China’s action on EC control. It is planned that the environmental risk of ECs will be generally controlled by 2035 in China. Priority ECs should be screened for environmental management. Although great efforts have been made, the EC control in China still faces tremendous challenges. It is necessary to bridge the gap between scientific research and decision-making management. Based on the science and technology study, various measures such as engineering, policy management and public participation should be combinedly adopted for EC control.

关键词: Emerging contaminants     Priority pollutants     PPCPs     POPs     Control policy    

标题 作者 时间 类型 操作

工程过程中分子间和表面间相互作用

张嘉文, 曾宏波

期刊论文

Towards an integrated modeling of the plasma-solid interface

Michael Bonitz, Alexey Filinov, Jan-Willem Abraham, Karsten Balzer, Hanno Kählert, Eckhard Pehlke, Franz X. Bronold, Matthias Pamperin, Markus Becker, Dettlef Loffhagen, Holger Fehske

期刊论文

钱学森论地理科学

马蔼乃

期刊论文

对我国现代工程科学技术发展的思考

赵少奎,杨永太

期刊论文

Bridging science, technology and policy in emerging contaminants control

期刊论文

Cell surface protein engineering for high-performance whole-cell catalysts

Hajime Nakatani,Katsutoshi Hori

期刊论文

矿山安全减灾系统科学——矿山灾害学

周利华

期刊论文

Engineering Fronts in fields of Energy and Electrical Science and Technologies in the report of

期刊论文

钱学森与思维科学

卢明森

期刊论文

An Exploration of Surface Integrity Remanufacturing for Aeroengine Components

Qiao Xiang,Yong He,Ting-hong Hou

期刊论文

技术科学的发展与技术科学的社会价值

黄志澄

期刊论文

Review on mechanism and process of surface polishing using lasers

Arun KRISHNAN, Fengzhou FANG

期刊论文

Unconventional energy: Seeking the ways to innovate energy science and technology

Jing LIU, Zhixiong GUO

期刊论文

极地系统科学考察——大科学系统工程管理探索

陈立奇

期刊论文

Emerging contaminant control: From science to action

期刊论文