Training of expatriate refugee health workers: Principles and practices

Abstract—This paper describes in detail the separate components of an ideal expatriate refugee health worker training course. Emphasis is given to organizational aspects of such courses.     

奇台县退耕还林标准化实践探索

新疆奇台县位于天山北麓准噶尔盆地东南缘,2001年被国家林业局确定为退耕还林还草标准化示范县,项目实施以来,奇台县根据自身的情况和特点制定了抗旱集水保墒整地、重点防护林整地、树草种选择、生态公益林配置等切实可行的林业行业标准,并通过两个重点、八种模式、四种机制的林业工程建设,使得奇台县的退耕还林工作在全疆范围内发挥了很好的示范作用。     

贵州省旅游资源特性及其开发

揭示了贵州旅游资源的独特个性,深入探讨了贵州旅游业的形象定位--奇异秀美的喀斯特王国、神秘独特的地域文化旅游区,对贵州客源市场进行了细分和定位,并强调贵州近期应主抓普通兴趣旅游,但也要特别重视和扶持发展极有潜力的特殊兴趣旅游,最后提出了搞好贵州旅游开发营销的4点措施.     

超声光催化降解酸性粒子元青染料的研究

对超声波作用下的纳米TiO2光催化氧化法降角酸性粒子元青染料进行了研究。结果表明，超声波的引入提高了纳米TiO2光催化降解酸性粒子元青染料的降解率；降解率受反应时间、坡声波功率、空气流量的影响；添加少量的H2O2能够明显地提高酸性粒子元青染料的降解率。     

中国粮食生产发展预测及其保证程度分析

本文讨论了中国粮食生产发展面临的４种严峻困难与挑战。按照中国基本国情及世界市场粮食资源状况，中国必须走粮食基本自给的道路。利用投入占用产出技术及系统科学方法，对２０３０年中国的粮食产量、粮食进口量及自给率进行了预测。     

粤北城口-九连钨多金属成矿带特征及找矿方向

粤北城口—九连钨多金属成矿带位于北西向半隐伏—隐伏构造岩浆岩带和海西期隆拗过渡带。钨成矿与燕山第三期、四期花岗岩岩浆活动关系密切,成矿岩体同位素年龄97.5~157 Ma。钨矿化类型复杂,其中石英脉型钨矿是主要矿床类型。根据该成矿带钨的成矿地质条件及找矿信息,目前除寻找石英脉(带)型钨矿外,还应寻找蚀变花岗岩型和矽卡岩型钨矿。     

粮食安全与耕地的关系

粮食安全是关系到长治久安，社会稳定的大事，而耕地是粮食生产的主要载体。在广东省目前耕地面积不断减少，并且耕地质量面临下降的情况下，各级政府有责任采取各项措施，加大对耕地质量改良的投入。只有提高了耕地质量，才能确保广东省的粮食安全。     

粮食增产寄希望于中低产田改造

广东省增加粮食产量的关键是提高单产，改造中低产田是提高单产的最有效途径．本文回顾了一年来广东省农建改低的工作，指出今后应进一步提高认识，高标准搞好农田基本建设，为广东农业实现现代化打下坚实的基础．为搞好农田基本建设，必须切实加强领导．有计划有步骤地认真做好各方面的工作．     

Elevated Levels of Cadmium and Zinc in Paddy Soils and Elevated Levels of Cadmium in Rice Grain Downstream of a Zinc Mineralized Area in Thailand: Implications for Public Health

Prolonged consumption of rice containing elevated cadmium (Cd) levels is a significant health issue particularly in subsistence communities that are dependent on rice produced on-farm. This situation is further exacerbated in areas of known non-ferrous mineralization adjacent to rice-based agricultural systems where the opportunity for contamination of rice and its eventual entry into the food chain is high. In the current study, an assessment of the degree of soil Cd and Zn contamination and associated rice grain Cd contamination downstream of an actively mined zone of Zn mineralization in western Thailand was undertaken. Total soil Cd and Zn concentrations in the rice-based agricultural system investigated ranged from 0.5 to 284 mg kg⁻¹ and 100 to 8036 mg kg⁻¹, respectively. Further, the results indicate that the contamination is associated with suspended sediment transported to fields via the irrigation supply. Consequently, the spatial distribution of Cd and Zn is directly related to a field’s proximity to primary outlets from in-field irrigation channels and inter-field irrigation flows with 60–100% of the Cd and Zn loading associated with the first three fields in irrigation sequence. Rice grain Cd concentrations in the 524 fields sampled, ranged from 0.05 to 7.7 mg kg⁻¹. Over 90% of the rice grain samples collected contained Cd at concentrations exceeding the Codex Committee on Food Additives and Contaminants (CCFAC) draft Maximum Permissible Level for rice grain of 0.2 mg Cd kg⁻¹. In addition, as a function of demographic group, estimated Weekly Intake (WI) values ranged from 20 to 82 μg Cd per kg Body. This poses a significant public health risk to local communities. The results of this study suggest that an irrigation sequence-based field classification technique in combination with strategic soil and rice grain sampling and the estimation of WI values via rice intake alone may be a useful decision support tool to rapidly evaluate potential public health risks in irrigated rice-based agricultural systems receiving Cd contaminated irrigation water. In addition, the proposed technique will facilitate the cost effective strategic targeting of detailed epidemiological studies thus focusing resources to specific ‘high risk’ areas.