纳米安全性事关重大国家利益

由国家纳米科学中心和中国科学院高能物理所联合举办的“纳米安全性：纳米生物效应与生物医学应用——化学、生物、医学、毒理学、物理学与纳米科学交叉的新机遇”研讨会于1月24日至26日在京举行。中国科学院常务副院长、国家纳米科学中心主任白春礼在会上指出，“纳米安全性一方面是保障纳米科技顺利发展的重要前提；另一方面，它也事关重大国家利益，因为纳米产品和纳米技术的安全性，将成为影响纳米产业国际竞争力的关键因素之一。纳米产品的安全性问题可能成为发达国家限制‘市场准人’的策略”。他认为，纳米安全性是纳米科技的重要组成部分，它能使纳米科技成为人类第一个真正的“绿色科技”，使科学技术能够更有效地造福人类。     

2007中国国际纳米科学技术会议在京开幕

继“2005中国国际纳米科学技术会议（ChinaNANO 2005）”在京成功举办之后，由国家纳米科技指导协调委员会主办、国家纳米科学中心承办的“2007中国国际纳米科学技术会议（ChinaNANO 2007）”于2007年6月4日在北京召开，会议为期三天。中国科学院常务副院长、国家纳米科学中心主任白春礼院士担任大会主席。     

我国将进一步加强纳米科技研究

针对纳米科技发展存在的研究方向发展不均衡、可持续发展能力不足等问题，“十一五”我国纳米科技研究将突出重点，加强顶层设计。这是记者从近日召开的国家纳米科学技术指导协调委员会工作会议上获悉的。[第一段]     

关于发展纳米技术的几点看法

纳米科学与技术（简称“纳米技术”）内容十分广泛,美国的国家纳米技术倡议（NNI）就提出了7个大类,即材料与制造、纳米电子学和计算机技术、医疗和卫生、航空航天、环保和能源、生物技术和农业、国家安全。我个人认为这些都很重要,但重点是材料、电子学和医学3个方面,现分述如下。 纳米材料 这方面包括用超微粒子（UFP）构成的材料或具有纳米结构的材料。内容比较广泛,国内也开展得较多。但称     

跑步前行的中国纳米研究

由国家纳米科技指导协调委员会主办、国家纳米科学中心承办的“2007中国国际纳米科学技术会议（ChinaNANO2007）”于2007年6月4—6日在北京召开，《科学时报》记者特别采访了中国科学院常务副院长、国家纳米科学中心主任白春礼。白春礼向记者谈到了我国纳米科技的快速发展态势以及国际地位，并回顾了近年来我国在纳米科技领域取得的累累硕果，其间，激动自豪的心情溢于言表。同时他也指出我国的纳米科技研究还存在的一些不足之处。现将该粳道全文转载，借以与关注我国纳米科技发展的读者们共学共勉![编者按]     

美国公布国家纳米技术项目战略计划

正美国政府已经公布了2014年国家纳米技术项目(NNI)战略计划,由国家科技委员会小组委员会就纳米科学、工程与技术的发展制定该计划。本计划更新和替换2011年2月发布的NNI战略计划。NNI的目标是在未来有能力去理解和控制纳米尺度上的物质,为促进社会发展,带来一场技术和产业革命。NNI加快了纳米科学、工程和技术的发现、开发和部署,通过一个     

纳米认可认证机构设立

日前,纳米技术专门委员会正式成立,标志着我国纳米认可认证走向标准化、规范化。纳米技术专门委员会隶属于中国实验室国家认可委员会技术委员会,挂靠在国家纳米科学中心。国家纳米科学中心作为国家级的纳米科技研究单位,对纳米技术标准化、纳米检测实验室的认可工作非常重视,在国家认可认证监督管理委员会的支持帮助下,筹备成立了纳米技术专门委员会。(摘自2004年5月27日《人民日报》)纳米认可认证机构设立     

解思深院士访谈笔录

2005年9月初，国家纳米科学中心首席科学家解思深院士应邀参加了“2005（第四届）中国纳米科技西安研讨会暨纳米科技产品展览会”。本刊付主编孙向成博士在会议期间采访了解思深院士：     

我国跻身纳米科技大国行列

据报道,2011年1月11日,科技部与中科院、自然科学基金会等在北京召开了国家纳米科学技术指导协调委员会工作会议。兼任该委员会主任的科技部部长万钢在会上表示,“十一五”我国纳米技术实现了跨越式发展,纳米研究重大科研计划等的实施,使我国纳米研究水平大幅提升,进入国际先进行列,已成为纳米科技大国。     

国家计委着手安排国家纳米科学中心和纳米技术及应用国家研究中心建设

6月6日国家计委高新技术产业发展司召开座谈会,通报已经国务院领导批准的《国家计委关于组建纳米科学中心和纳米技术及应用国家工程研究中心有关问题的报告》的相关内容及国务院领导批示“要加大对纳米科学技术研究开发的投入。请计委牵头协商有关部门,采用创新的机制推动纳米科技的更快发展”,并听取各部门意见,安排布置下一步有关工作。《报告》在分析了发展纳米科技的形式后提出:(一)组建国家纳米科学中心,集中力量开展纳米基础理论、基本方法等基础科学研究。国家纳米科学中心要在自愿的基础上,由依托单位联合相关的科研单位共同组建,并成立由各发起单位和科学家组成的理事会进行管理。为避免重复建设和分散管理,在组建国家纳米科学中心时,要求采取鼓励联合,适度竞争的方式选择依托单位。国家纳米科学中心的运行要采用完全开放的体制,对国内外科学家完全开放,鼓励自带研究课题进入中心利用科学中心的设施开展研究工作,使纳米科学中心真正成为我国纳米科学研究的公用研究平台。对纳米技术基础理论的研究,要充分重视发挥各科研单位的积极性,形成网络式的研究体系,促进科学交叉和信息共享。初步考虑在北京组建国家纳米科学中心。(二)组建纳米技术及应用国家工程研究中心,集中力量研究开发纳米材料、纳米器件、纳米机械、纳米电子等应用技术.加快纳米技术的产业化开发。纳米     

Effect of Permeable Crystalline Material on Steel Reinforcement Corrosion of Concrete

Permeable crystalline materialcan permeate into pores and cracks of concrete and catalyze the reaction between Ca(OH) 2and unhydrated cement to generate a great quantity needle non-soluble crystals, which can stop up the pores and cracks of concrete, and increase the impermeability of concrete. This paper reported the results of a study conducted to evaluate steel reinforcement corrosion of concrete specimens uncoated and coated with permeable crystalline material as well as mixed with the permeable crystalline material. The properties evaluated for corrosion test were water impermeability, water absorption, compressive strength and potential. The results of water impermeability, water absorption, compressive strength clearly showed that the permeable crystalline material could prohibit water, any soluble salts and moisture from penetrating the concrete to cause corrosion, leaking, and other problems, and it did increase the compressive strength, which was favorable for protection of corrosion of reinforcing steel. Moreover, it was concluded from the potential-time curve that the steel reinforcement of uncoated specimen was in the state of activation whereas that of other specimens coated and mixed with the permeable crystalline material was in the state of inactivation. Above all, it was indicated that the permeable crystalline materialis very effective to protect the steel reinforcement of concrete from corrosion.     

The Research and Application About "Dry Peeling Off" Technology for Airplane Surface Paint Layer

In this paper, the principle of spurting take off lacquer were introduced; and with orthogonal method the unsaturate polyester was prepared ;it was easy to peel airplane paint layer off with this material and equipment.     

Quality Study of Honeycomb Core Shaping Without Wax Stabilization

Sandwich panels utilizing honeycomb cores result in lightweight, high-strength units that are very rigid. Indeed, they give honeycomb panels the best strength-to-weight ratio of any construction type available. Conventionally, the wax is poured into the cell of the core to strengthen the structure and prevent the core from being crushed during milling. Much time and labor is required to wax, mill, and clean the cores. In this study, the process of pouring wax into the core was skipped. In other words, the cutter directly milled the core. Experiments showed that the compressive strength of the core produced without wax stabilization was only 3% lower than that of cores produced using the traditional method. In addition, the drum peel strengths of cores produced without wax stabilization were 38.4% higher than cores produced using the traditional method, in which residual wax seriously polluted the adhesive. It was also found that eliminating the wax process can reduce costs.     

In-process thermal treatment of polylactic acid in fused deposition modelling

Polylactic acid (PLA) is one of the most widely used open source fused filament fabrication materials due to its ease of extrusion, biodegradability, and mechanical strength. The mechanical strength of PLA largely depends on the proper growth of its semi-crystalline structure, which can be severely impaired by a low rate of crystallization, particularly in open source printers. This can be further aggravated by the non-uniform thermal distribution of heat that causes improper curing among the extruded beads of the printing material. As a result, PLA printed on open source printers does not achieve the best mechanical properties. This research, for the first time, proposes an additive-free solution implemented through a detailed set of experimentation to improve the curing rate through in-process temperature variations to cure the joints among the beads. Scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and Fourier transform infrared (FTIR) spectroscopy is used to confirm the improvements in the bead joints. This work is conducted in two phases of experiments. In the first phase, a full factorial ANOVA is used to investigate various process parameters and the important variables are used in the second phase to print test specimens in four different sets.     

Investigation of the Corrosion Behaviors of HVOF-Sprayed Carbide Cernet Coatings in Molten Al-Zn-Si Alloy Bath

In continuous hot-dip galvanization process the corrosion and chemical stability of the sink roll in the galvanizing bath are important problem which effects on the quality and productivity. In order to protect the sink roll the carbide cermet and/or ceramic coatings were deposited on the surface of the sink roll. The WC-, Cr3 C2-cermet coatings were deposited by high velocity oxygen fuel (HVOF) spray, respectively. The coating samples were immersed in molten Zn-alloy containing 50 wt % aluminum at 833 K for 24 hr and 144 hr, respectively. The inter-diffusion and inter-reaction of Zn, Al and elements in coating and corrosion behaviors of these coatings were investigated by XRD, SEM and EPMA etc. The corrosion mechanisms of the carbide cermet coatings and ceramic coatings in molten High Al-Zn-alloy were approached.     

Fundamental study of adhesion of ice to cooling solid surface (Discussion on influence of copper oxide layer on ice adhesion force)

In many situations, ice often adheres to a cooling solid surface, frequently causing serious accidents. It is critical to clarify the mechanism of ice adhesion to the cooling surface in order to prevent ice adhesion. In a past study, the shearing stresses of two kinds of test plates with a copper surface having the higher thermal conductivity were measured. The shearing stress corresponds to ice adhesion force. Both shearing stresses were significantly different; however, the cause remains unclear.Therefore, the present study focuses on an oxide layer as the main factor causing the difference of both shearing stresses; the influence of the oxide layer formed on shearing stress was discussed. And in the removal and reformation processes of the oxide layer, the time variation of the shearing stress was clarified. Moreover, the relationship between the state of the copper surface and the shearing stress was also clarified by surface analysis.     

重塑标准推行格局 推动LED照明的普及（英文）

正When you are enjoying the green,energy-saving and healthy lighting of IKEA LED luminaire,you may not realize that most of IKEA’s LED bulbs are produced by the LED luminaire smart manufacturing system of Hangzhou Zhongwei Photoelectricity CO.,LTD(ZVISION).No longer enclosed in the laboratory,the product standards are brought into the factory workshop and even to the entire production process.Thus,the standards are promoted and applied in a favorable way by enterprises,benefitting consumers with high quality products.     

Chinese Experts Contribute to ISO＇s New Toy Standards

正The international standard,ISO 8124-6,Safety of toys–Part 6:Certain phthalate esters in toys and children’s products,was officially issued by ISO worldwide on August 15.It was the first time for Chinese experts to lead the ISO standard development in toys industry.The standard was drafted by a group of Chinese experts from SAC/TC for toys and relevant Chinese departments and finally completed by a dedicated international group of experts.ISO 8124-6 makes a substantive breakthrough in the aspects of the scope of toys,limitation of plasticizer types,control of test cost,accuracy of test,operation convenience,etc.,offering the operational guidance for toy manufactures and testing laboratories.     

中国质量(北京)大会(英文)

正Themed on"quality,innovation,development",the first China Quality Conference(Beijing)was held in the Great Hall of the People on September 15.Chinese Premier Li Keqiang delivered an important speech at the conference.State Councilor Yang Jing and Wang Yong attended the conference with over 600 domestic and international representatives from foreign,regional and international quality organizations     

National Working Meeting on Land and Resources Standardization

正The National Working Meeting on Land and Resources Standardization was held in Beijing on July 15,2014.Wang Min,the Deputy-Minister of the Ministry of Land and Resources,and Yin Minghan,the Chief-Engineer of SAC addressed the meeting.Representatives from relevant competent departments and technical committees were present.The meeting aims to summarize work,discuss existing problems and make clear working thoughts,promoting standardization work of land and resources to a new level.Wang Min pointed out that the standardization work of land and resources should be centered on the basic principles of"protecting land and resources dutifully,intensively and economically utilizing land and resources,and making all-out efforts to safeguard the public’s rights and interests",highlighted the