农产品全程追溯取得重大进展

农业部近日发布的《中国农产品质量安全概况》中指出,自2004年探索建立农产品质量安全追溯制度以来,以推进农产品标识行动为抓手,我国农产品质量安全全程可追溯管理取得重大进展。据农业部介绍,在"进京蔬菜产品质量追溯制度试点"中初步实现了农产品的源头追溯和流向追踪,尤其在产品标签信息码的开发、管理、使用、查询等方面取     

中国农产品质量安全追溯体系建设现状和未来发展

农产品质量安全追溯是通过标识农产品从生产到市场全过程信息、落实农产品质量安全监管主体责任的重要手段;农产品质量安全追溯体系建设,对于保障"从农田到餐桌"的食品安全、促进我国农业现代化具有重要意义。本文首先简要回顾了欧盟、美国等发达国家和地区农产品质量安全追溯体系建设历史,分析了发达国家农产品追溯体系建设的主要经验及其对中国农产品追溯体系建设的启示。在此基础上,详细总结了2000年以来中国农产品质量安全追溯体系在法律法规建设、标准编码研制、关键技术研发重点和平台研发应用四个方面的发展现状,并根据国际发展趋势和中国农产品追溯产业发展需要,提出了近期我国农产品质量安全追溯体系建设的四项目标和三项建议。     

基于网格化管理的农产品质量安全追溯系统的设计与实现

农产品质量安全追溯是通过标识和查询农产品过程信息、落实农产品质量安全的重要手段。农产品质量安全追溯体系的建设,对于保障"从农田到餐桌"的食品安全和我国农业现代化都具有重要意义。为此,笔者以中宁县枸杞生产为案例,采用了空间分析、数据网格化、云计算、移动互联网等一系列技术和方法,构建了包括宽度、深度和精确度三个维度的食品可追溯体系,突破了定位与地图显示、数据网格化、预警服务与推送、二维码关联与追溯等多项关键技术,形成了能够覆盖农产品生产全流程的农产品质量安全追溯系统。在系统建设与应用示范过程中,该系统在农作物质量安全追溯上可以基本满足管理人员、生产人员和消费者的需求,在未来该系统可以应用到全部农产品的质量安全追溯体系中,可继续研究并建立国家层面统一的、标准化的追溯标准。     

山东省农产品质量安全监管追溯平台设计与建设初探

本文总结了自2009年以来,山东省推进农产品质量安全监管追溯平台建设的经验和不足,立足中央一号文件提出"建立全程可追溯、互联共享的农产品质量安全信息平台"的要求,提出了借助互联网+新型信息化手段,在全省加快建立健全农产品质量安全监管追溯平台的设计思路和建设任务。     

我国农产品追溯体系现状及对策

我国农产品质量追溯体系的现状及存在的问题,已成为政府和学术界关心的热门话题。通过对农产品追溯体系的现状、发展历程及存在问题进行分析,归纳出我国农产品追溯体系建设的成果和不足,在研究和分析的基础上,提出了完善我国农产品追溯体系的对策。     

农产品质量追溯技术和体系建设进展研究

为了提高农产品质量安全,面对农产品安全事故能够及时应对,对农产品质量追溯技术和体系的国内外情况进行了比较分析,针对我国农产品生产加工现状,就加强农产品质量追溯技术和体系发展提出了相应的建议与对策。     

杭州利用条形码建立农产品追溯机制

近日,杭州市鲜活食用农产品质量安全追溯管理启动仪式在杭州市农产品物流中心举行。启动仪式上发布了《杭州市鲜活食用农产品质量安全追溯管理工作方案》（以下简称《方案》）,这标志着杭州市开始了农产品质量安全追溯机制的探索。     

“互联网+”农产品质量安全追溯发展研究

保障农产品质量安全是全面建成小康社会的基本要求,事关农业农村经济发展和人民群众健康安全。在"互联网+"发展背景下,农产品质量安全标准体系和溯源体系加速推进,农产品质量安全风险整体上得到有效控制;但是依然存在政府监管责权不明,地域分割现象严重,溯源标准统一性较差,追溯信息缺乏宽度、深度和精度,追溯系统业务化运行能力弱,追溯生态可持续性不足等问题。本文系统回顾了我国农产品质量安全监管体系、法律法规、标准体系建设以及溯源技术/系统研发取得的进展,分析了当前面临的主要问题;基于2025年、2035年战略目标,提出了针对性的发展路径和建议。研究表明,未来"互联网+"农产品质量安全发展应重点推进溯源标准化、完善质量安全追溯体系、强化风险评估和监测预警、拓宽实践领域和服务对象、加大溯源技术研发力度、落实好专业人才培养,保障2035年建成正循环、可持续追溯生态与农产品质量安全国家治理体系的远景目标。     

我国将规范转基因食品标识使用

日前,中国政府网公布了国务院办公厅印发的《2014年食品安全重点工作安排》,提出要建立食品原产地可追溯制度和质量标识制度,同时规范转基因食品标识的使用。今后,食品的“身份信息”将逐步实现可追溯。该工作安排提出要建立食品原产地可追溯制度和质量标识制度,同时规范转基因食品标识的使用。该工作安排提出,要建立食品原产地可追溯制度和质量标识制度。加快建立“从农田到餐桌”的全程追溯体系,研究起草重要食用农产品追溯管理办法,稳步推进农产品质量安全追溯、肉菜流通追溯、酒类流通追溯、     

江西农产品质量追溯标准体系建设研究

本文结合农产品质量追溯管理的技术要求及标准规范,针对江西农产品进行质量追溯管理需要建设的标准体系进行分析研究,介绍了如何从统一化、信息化、标准化的管理思路进行产品质量追溯管理平台建设,明确了如何有效地与国家、其他相关部门之间建立产品质量追溯管理体系。     

Insertion of triangulated surfaces into a meccano tetrahedral discretization by means of mesh refinement and optimization procedures

In this paper, we present a new method for inserting several triangulated surfaces into an existing tetrahedral mesh generated by the meccano method. The result is a conformal mesh where each inserted surface is approximated by a set of faces of the final tetrahedral mesh. First, the tetrahedral mesh is refined around the inserted surfaces to capture their geometric features. Second, each immersed surface is approximated by a set of faces from the tetrahedral mesh. Third, following a novel approach, the nodes of the approximated surfaces are mapped to the corresponding immersed surface. Fourth, we untangle and smooth the mesh by optimizing a regularized shape distortion measure for tetrahedral elements in which we move all the nodes of the mesh, restricting the movement of the edge and surface nodes along the corresponding entity they belong to. The refining process allows approximating the immersed surface for any initial meccano tetrahedral mesh. Moreover, the proposed projection method avoids computational expensive geometric projections. Finally, the applied simultaneous untangling and smoothing process delivers a high‐quality mesh and ensures that the immersed surfaces are interpolated. Several examples are presented to assess the properties of the proposed method.     

Certification Institutions Expected to Update and Transfer Information on Present Standards

Standards are the basis for production enterprises to organize production, ex-factory inspection, trade (delivery) and technical exchanges, product certification, quality arbitration and supervision.……     

Flow calorimeter for enthalpy increment measurements on condensed gases

A flow calorimeter for enthalpy increment measurements on condensed gases is presented. A better knowledge of the properties of the liquefied natural gas is needed, and therefore a liquid loop has been designed for our flow calorimeter. The fluid loop in the calorimeter is designed in order to avoid the two-phase region, since two phases would give compositional disturbances in the measurements. The avoidance of the two-phase region is made possible by increasing the pressure of the test fluid after the measurement section, then heating the fluid at super-critical pressure past the critical point. Finally, the fluid is throttled to the low-pressure gas state at the inlet condition of the compressor that circulates the fluid. To perform the pressure increase, a new cryogenic pump has been designed. To evaluate the new equipment, measurements were taken on liquid ethane over the temperature range 146–256 K at pressure between 0.9 and 5.1 MPa.     

Refrigerators Enter a New Era of Health Preservation Frestech initiates the establishment of China's first standard for household sterilization refrigerators

On November 30, 2007, the China Association for Standardization (CAS) held a press conference at Beijing Diaoyutai State Guest House. Leaders from the China Household Electric Appliance Research Institute, the China Household Electric Appliance Association, and the China Consumers' Association attended and made speeches.……     

Optimum-Simulation von Ernteprozessen

Zusammenfassung Bei der Gestaltung von Ernteprozessen — beispielsweise des Prozesses Mähdrusch, Körnertransport und -abnahme — als transportverbundene Fließarbeitsverfahren mit mindestens zwei verschiedenen Arbeitsmitteln gibt es einen großen Optimierungsspielraum. Solche Prozesse sind mehrstufige Bedienungsprozesse mit gemischter Anordnung der Bedienungseinrichtungen. Außerdem besitzen sie stark ausgeprägte räumliche Aspekte. Es wird vor allem gezeigt, welche Merkmale solcher Prozesse in Simulationsmodellen abgebildet sein müssen, welche Zielgrößen in Abhängigkeit von welchen Einflußgrößen unter Berücksichtigung welcher Prozeßbedingungen ermittelt werden sollten und wie der Bewertungsprozeß zur Ermittlung der gewünschten Informationen gestaltet werden muß.     

A study of centrifugal cast high boron high speed steel

In the present study a high‐boron high speed steel (HSS) roll material was designed. Many expensive alloy elements have been substituted by cheap boron alloy, and high‐boron high speed steel roll has been manufactured by centrifugal casting method. The microstructures, mechanical properties and wear resistance of centrifugal casting high‐boron high speed steel roll have been investigated by optical microscopy (OM), scanning electron microscopy (SEM), and X‐ray diffraction (XRD) analysis, hardness test, impact test and wear test. The results indicated that the solidification microstructures of high‐boron high speed steel roll consisted of M₂(B,C), (W,Mo)₂(B,C), M₃(B,C), M₂₃(B,C)₆ type borocarbides and martensite, a small amount of retained austenite. Borocarbides were continuously distributed over the grain boundary. After quenching from 1050 °C, local broken network appeared in partial borocarbides, and fine secondary borocarbide precipitated from the matrix. After tempering from 525 °C, the amount of precipitated borocarbide increased significantly. After heat treatment, the hardness of high‐boron high speed steel roll excelled 60 HRC, and its impact toughness excelled 8.0 J/cm². The single groove steel rolling amount of high‐boron high speed steel rolls increases by 500% than that of bainite cast iron roll, when the rolls are used in K₁ mill housing of bar mill.     

Brainstorming for ISO Strategy 2016-2020

正Responding to ISO’s appeal for survey for the to-be-developed ISO Strategy Plan for 2016-2020,SAC hosted a special workshop over the needs and comments of various fi elds on June 8 in Beijing.The workshop was attended by ISO President-elect and Ansteel General Manager Zhang Xiaogang,SAC Vice-Administrator Yu Xinli,and 30 experts from     

CNAS Passes APLAC's PTP Review

正The review group of Asia Pacific Laboratory Accreditation Cooperation(APLAC)carried out a 4-day peer review of the proficiency testing provider(PTP)for China National Accreditation Service for Conformity Assessment(CNAS)from July 28 to 31,2014.CNAS passed the PTP review with excellent performance.Two senior peer reviewers of APLAC made a comprehensive,rigorous and detailed review of CNAS’s PTP accreditation activities,and made the on-spot inspection of the review groups in Shanghai and Shenzhen respectively.     

新闻(英文)

正China and Greece Sign the Standardization Cooperation Agreement Witnessed by Chinese Premier Li Keqiang and Greek Prime Minister Antonis Samaras,AQSIQ Minister Zhi Shuping and ELOT Chairman and Executive Director Angelos Tolkas signed the SAC-ELOT Standardization Cooperation Agreement.The Agreement is one of the critical cooperation documents signed during Li Keqiang’s visit in Greece,encouraging China and Greece to