共查询到20条相似文献,搜索用时 172 毫秒
1.
基于农药残留危害分析的农村食品安全建设 总被引:1,自引:0,他引:1
文章综述了农药是造成食品化学性污染的主要原因,导致农药残留的原因所在,以及农药残留对人体健康、农业生产和进出口贸易的危害,并提出了减少农药残留的方法、解决农药残留问题和农村食品安全问题的措施和建议。 相似文献
2.
3.
4.
课程思政背景下,实现专业课程与思想政治理论课程的有效融合是新时代下教育改革的必然趋势,也是高校落实立德树人根本任务的必然要求。食品化学课程是高校食品科学与工程专业的基础课、必修课。为实现食品类专业立德树人的教育目标,高校必须充分地深入挖掘食品化学课程中蕴含地丰富思政元素,将之与思想政治理论课深度融合,重构课程思政下的食品化学课程教学模式。以海南大学为例,在阐述课程思政背景下重构食品化学课程教学模式的重要性,从加强食品化学课程思政教师队伍建设、深入挖掘化学课程中蕴含的思政元素、创新食品化学课程教学方法以及完善食品化学课程思政考核评价方法等方面提出了重构食品化学课程教学模式的具体路径,最后对课程思政背景下食品化学课程教学模式改革的成效进行总结和反思,以期可以为高校食品化学课程教学模式改革与应用提供合理建议。 相似文献
5.
6.
基于主动探索能力的食品化学实验教学改革 总被引:1,自引:0,他引:1
《广州化工》2017,(2)
食品化学是食品专业的专业基础课程之一,实验教学是加强学生对知识的理解,也是培养学生发现问题、分析问题和解决问题的能力。本课题分析了食品化学实验教学现状和存在的问题,通过优化实验内容,增大学生感兴趣的设计类实验比例,鼓励学生利用校内实训基地进行项目研发等方式,激发学生的主动探索能力。探讨了激发学生主动探索能力在食品化学实验教学改革中的作用,对食品化学的学科发展起着重要作用。 相似文献
7.
8.
浅谈对食品化学实验教学的认识与改革探索 总被引:2,自引:1,他引:1
针对目前食品化学实验教学存在的缺点与不足,提出在实验教学内容和方法上加以改革,通过实践证明行之有效。教研改革有效地保证了学生对食品化学基本原理的掌握,同时培养了学生的科研素质和创新能力。 相似文献
9.
食品化学是食品科学与工程专业的重要专业基础课,在课程教学中,课题组以培养应用型人才为目标,依据食品化学课程的性质和特点,对教学内容、多元化实践教学和考核评价体系及反馈体系的构建等方面进行了改革探索,努力构建"前沿、实践、创新"的教学模式,培养学生的实践能力和创新能力,促进应用型食品专业人才的培养,达到了食品化学课程教学的目的。 相似文献
10.
“民以食为天”,随着人民生活水平不断提高,人们关心食品不仅仅是“食以果腹”,更多地是关心食品的营养、安全卫生、贮藏、综合利用等问题。本文在描述“食品化学”的定义的基础上,说明食品化学在食品安全、打击伪劣食品、食用产品加工质量、食品资源的综合利用中所起的作用,论述了食品化学对人类健康的重要性。 相似文献
11.
12.
13.
The scale and shape of areas and volumes of contamination at and below the Earth's surface are summarized. It is argued that in terms of their anomalous chemical composition, spatial distribution and relation with the host matrix, analogies can be drawn between bodies of contamination and deposits of metalliferous minerals. It is recommended that bodies of contamination are explored in much the same ways as mineral deposits. Additional attention must be given to their greater chemical complexity and degree of mobility. Characterization of clays and other sorbents is particularly important in contaminated soils and sediments. The scavenging property of clays means that they act as natural immobilizers of contaminants and can be employed as contaminant containment barriers. Clays are, however, vulnerable to alteration and degradation of their sorption capacity, which can lead to the release of absorbed contaminants. 相似文献
14.
环保型铜及铜合金化学抛光与钝化新工艺 总被引:2,自引:0,他引:2
介绍了一种无毒、低污、环保型铜及铜合金化学抛光工艺,该工艺的优点是溶液成分简单,易于操作,抛光速度快、亮度好、低污染。讨论了该工艺的特点、影响因素以及操作规范。 相似文献
15.
16.
Frank L. Jones 《Journal of the American Ceramic Society》1945,28(1):32-32
Glass deteriorates rapidly in tropical regions with a high relative humidity. Transparency decreases due to the growth of deposits of corrosion products, chemical decomposition of the surface layer to produce pits or holes, or contamination of the surface by organic material. The processes involved in tropical deterioration are similar to the chemical reactions of glass and water in other environments. 相似文献
17.
纳米自洁涂料的自清洁特性包括两方面:涂膜具有拒水、拒油和拒污染物特性,以及涂膜具有促进光降解污染物特性。前者特性的表征和评价方法,主要有涂膜化学成分分析、与水接触角和滚动角测定、对粉煤灰耐沽污性测定、对炭黑集灰效果测定、涂膜表面在纳米和微米水平上形貌观察等;后者特性的表征和评价方法,有涂膜对光降解亚甲基蓝和茜素红能力测定等。文章对纳米涂料自清洁特性的表征和评价方法进行综述。 相似文献
18.
19.
Joëlle Fismes Christophe Schwartz Corinne Perrin-Ganier Jean Louis Morel Anne-Marie Charissou Marie-José Jourdain 《Polycyclic Aromatic Compounds》2013,33(4-5):827-836
Former industrial sites represent a potential source for food chain contamination if they are converted to residential use where garden practices may be undertaken. In order to assess the risk for human health through vegetable consumption, two research programs were initiated to evaluate the bioavailability of selected PAHs and their potential transfer to edible parts of different vegetables. With this intention, we tested four methods to predict the potential contamination of vegetables growing on polluted soils (wild plant analysis, cropping of vegetables on polluted soils, models of organic pollutant transfer, soil selective chemical extractions). Various wild plant species colonized naturally the contaminated soils of former industrial sites and edible vegetables grew on these soils without symptoms of phytotoxicity. When soils presented concentrations of pollutants compatible with residential land use, no significant concentration of PAHs was measured in the different tissues. Moreover, in soils highly polluted by PAHs significant soil-root-leaf transfers of pollutants were showed, but no PAHs were found in fruits and in storage organs. We noted a similar behavior of cultivated vegetables and of their wild analogous plants facing organic pollutants. In another way, two selective chemical extraction methods correctly evaluated the soil PAH bioavailable fraction for plants growing on low-polluted soil. This would allow the use of wild plants naturally present on polluted soils in parallel with soil chemical extraction methods to assess the risk of contamination of the food chain. 相似文献