Results of the monitoring program of pesticide residues in organic food of plant origin in Lombardy (Italy)

Organic agriculture, with its restrictions on the use of synthetic chemical inputs, seems to offer a low-residue alternative to conventional methods. In Europe, the Council Regulation n. 2092/91/EEC regulates the production and trade of organic products and foodstuffs; national and regional legislation in Italy gives specific guidance on the surveillance of organic agriculture. However, monitoring of specific chemical residues in organic foodstuffs is part of the regular controls on food, aiming to safeguard consumer's health. Monitoring programs are coordinated at the national level by the Ministry of Health and at local level by Regional authorities. In Lombardy, in accordance with the provisions of the General Directorate of Health of the Region and under the supervision of the 15 Local Health Units, a monitoring program of pesticide residues in food of plant origin is undertaken every year. The International Centre for Pesticides and Health Risk Prevention (ICPS), on behalf of the General Directorate of Health of the Region of Lombardy, has been collecting and elaborating the data resulting from the analysis of food samples, carried out by the local laboratories. During the period 2002–2005, a total of 3508 samples food of plant origin were analyzed for pesticide residues, among which were 266 samples of organic farming products. Commodities were classified into groups (citrus fruits, legumes, vegetables, potatoes, processed products, cereals, and fruit other than citrus) and the outcomes of the analyses were reported by year, origin of the sample and presence/absence of pesticide residues. Results showed that the vast majority of organic farming products were in conformity with the relevant legislation and did not contain detectable pesticide residues. A limited amount of samples had residues at concentration below the Maximum Residue Limit (MRL). Only in one sample the residue level was above the MRL, however it did not pose a concern for public health, as demonstrated by the outcomes of dietary risk assessment. Organic fruits and vegetables can be expected to contain fewer agrochemical residues than conventionally grown alternatives. There is a widespread belief that organic agriculture products are safer and healthier than conventional foods. It is difficult to come to conclusions, but what should be made clear to the consumer is that “organic” does not automatically equal “safe”. In the absence of adequate comparative data, additional studies in this area of research are required.     

新时期公众对地震谣言的认知状况分析

通过对北京地区不同阶层人群的防震减灾科普知识、需求及科普形式创新调查数据的定量分析,以及对2008年汶川地震发生后政府成功制止谣言的传播和2010年山西部分地区地震谣言传播事件进行的分析,阐述了地震谣言产生和传播的社会基础以及政府危机传播策略在地震谣言事件中存在的问题.防震减灾科普知识的匮乏以及对地震部门工作的不了解导致公众对地震谣言的识别能力低下；媒体对地震知识的概念混淆,使得高知人群更容易对国内地震预报工作产生误解；政府仅仅通过单一媒体对地震谣言进行简单的辟谣,效果将会非常有限.     

Design of Optimal Noise Hazard Control Strategy With Budget Constraint

An analytical design procedure to determine optimal noise hazard control strategies for industrial facilities is presented. Its objective is to determine a set of appropriate noise controls to eliminate or reduce noise levels so that workers ‘ daily noise exposure does not exceed a permissible level. From a given noise control budget, engineering controls will be firstly implemented, followed by administrative controls, and then the use of hearing protection devices. Six optimization models are developed and sequentially applied to select appropriate noise controls without exceeding the budget. Numerical examples are presented to demonstrate the application of the proposed design procedure.     

国有大中型钢铁企业后勤保障安全策略分析

国有大中型钢铁企业后勤安全管理是一项系统化工作，具体实施过程中需要坚持安全第一位的基本原则，建立长效安全保障制度，推动钢铁企业后勤安全管理工作顺利开展。钢铁企业后勤安全管理过程中需要坚持以人为本的基本原则，需要从安全保障基本制度建设出发。不断优化安全管理策略，建立科学合理的安全保证机制，推动国有大中型钢铁企业后勤管理水平不断提升，从根本上实现后勤安全保障工作规范化运行，促进企业获取更多的经济效益和社会效益。     

我国排污权交易政策及完善对策研究

排污权交易在环境管理领域里正受到越来越多的关注。回顾了我国近年来的排污权交易政策,并对排污权交易试点实施效果进行了阐述,同时结合目前排污权交易在我国应用和研究现状,对排污权交易制度在实践过程中仍存在法律政策落后、初始分配公平与效率缺乏保障、市场体制欠缺以及监测监督力度不够等主要问题进行分析,并从排污立法、市场培育、政府监管3个方面提出政策建议。     

中国海岸地带面临的重大环境变化与灾害及其防御对策

中国海岸地带面向２１世纪的持续发展,面临着相对海面加速上升和热带气旋、风暴潮与低洼地洪涝不断加剧以及海岸环境急剧恶化等一系列重大环境变化与灾害问题。本文着重分析相对海面上升、热带气旋、风暴潮与洪水灾害以及海岸环境污染的特征、演变趋势及防御对策。     

Water Resource Shortage: a Severe Challenge China Faces in the 21~(st) Century

1 Water Shortage is Approaching ChinaThe yearly average volume of waterresource in China amounts to2 .81 trillion m3,ranking the6 thplace in the world,but the per capita amount is only 2 30 0 m3,approximately one-fourth of theworld average,ranking1 2 1 st in the world.The uneven distribution of precipitation and waterresoruce by time and region,in combination with the very unbalanced configuration of water andsoil resources,has made the country one afflicted with frequent flood and drought di…     

可持续发展的基本理论分析

本文首先从可持续发展的概念与内涵入手,通过对可持续发展的理论分析和系统分析,归纳出了可持续发展的基本特点;并通过对指标体系的研究现状的分析,就可持续发展指标体系的建立原则进行了深入的探讨。     

山东21世纪自然资源可持续利用策略研究

本文探讨了自然资源可持续利用的基本内涵，分析了山东自然资源可持续利用面临的形势与问题，提出了山东21世纪自然资源可持续利用的战略构想。     

试论高校统计信息的策略

高校统计信息工作的策略是稳定统计信息人员队伍、制定统计信息制度、确定统计信息工作流程和改进统计信息工作手段．