排序方式: 共有97条查询结果,搜索用时 15 毫秒
81.
基于我国食品认证体系现状,通过文献研究对我国食品认证体制进行深入分析,并对比和借鉴美国、欧盟与日本的食品认证体制的先进性,为我国食品认证工作提出恰当的对策建议,旨在促进我国食品认证体制的完善。 相似文献
82.
RAPD技术快速鉴定辣椒杂种纯度的研究 总被引:4,自引:0,他引:4
利用RAPD技术,通过对60个随机引物的筛选,获得能区分粤椒4号及其亲本的引物OPS—01、并得到单株验证。 相似文献
83.
Janice Ser Huay Lee Lucy Rist Krystof Obidzinski Jaboury Ghazoul Lian Pin Koh 《Biological conservation》2011,(10):2512-2516
Societal concerns about the social and environmental impacts of biofuel production are driving producers to adopt better management practices. Existing certification schemes for sustainable biofuel production are, however, biased towards industrial-scale producers that have the financial capital and economies of scale to meet sustainability and certification objectives. Smallholder farmers in developing countries, by contrast, often lack the means and capacity to do so. Some of the challenges faced by smallholders include high certification costs, insufficient institutional capacity, inadequate financial and social incentives, poor group organization and lack of external support. Drawing lessons from existing certification programs, we argue that proponents of sustainable practices and standards must fully appreciate the complex realities of smallholder production systems. We provide policy recommendations for ensuring that no farmer is left behind in the quest to increase sustainable biofuel production. 相似文献
84.
Grain amaranth was fractionated to prepare a seed coat rich fraction along with the fine seed coat, middling and flour fractions. The nutritional content of the coarse seed coat fraction and its antioxidant potential were evaluated. It was observed that, the coarse seed coat fraction contained highest protein (17.81 g/100 g), dietary fiber (25.78 g/100 g), free sugar (2.25 g/100 g), calcium (1115 mg/100 g), sodium (279 mg/100 g), magnesium (178.4 mg/100 g) and potassium (398.8 mg/100 g) contents compared to all other fractions. The carbohydrate and protein digestibility of all the fractions were more than 80%. A slight decrease in linoleic acid and a concurrent increase in palmitic acid contents were observed in coarse seed coat fraction. The total phytic acid increased and total polyphenols contents decreased in the coarse seed coat fraction compared to the native grain. The DPPH, ABTS and total antioxidant activities are comparatively high in this particular fraction. The study indicated a possibility of preparation of a protein, fiber and mineral rich fraction from grain amaranth with good antioxidant potential which can be used as a functional food ingredient. 相似文献
85.
主要对兽药GMP认证中存在的问题,结合兽药GMP标准提出相应的建议,以提高人们对兽药GMP的认识,使我国兽药GMP认证工作进一步加强。 相似文献
86.
文章旨在通过对福建省建瓯市林业生态资本经营的实地研究中发现,FSC森林认证在促进林业可持续发展、增加林农收入、改善生态环境、提高生活质量、带动旅游经济发展、加快建设资源节约型、环境友好型社会方面起了不可或缺的作用,是林业进行可持续发展的一种路径探索。 相似文献
87.
Georgios C. Koubouris Varvara I. Maliogka Kostadinos Efthimiou Nikolaos I. Katis Miltiadis D. Vasilakakis 《Journal of General Plant Pathology》2007,73(5):370-373
The effectiveness of in vitro thermotherapy (explants at 35–37°C for 20 days) in obtaining propagating material of apricot
(Prunus armeniaca L.) cultivar Bebecou that is free of Plum pox virus (PPV) was compared to a conventional heat treatment technique (potted plants at 30–35°C for 8 weeks). An improved protocol
for in vitro thermotherapy was combined with shoot tip culture. The protocol is 5.8 times more effective than conventional
thermotherapy while taking half the time and is likely to have a high commercial impact for nurseries. 相似文献
88.
对3家森林认证管理委员会(FSC)认证单位的森林认证报告进行了分析,介绍了他们在环境保护方面的主要做法及存在的问题,提出了相关的对策。 相似文献
89.
在传统的FSC赛车制作过程中,一般采用手动拉杆离合,而在传统机械机械装置基础上,采用电子控制进行离合控制,会提高车手的操作速度,在FSC赛事中体现出离合的智能性,故研究电动离合有着必然的趋势和必然性。文章将电子控制引入FSC赛车中,本项目系统采用摩托罗拉公司生产的飞思卡尔xs128处理器作为核心,前端使用拨片控制电位器作为输入传感器,将采集到的信号输入到微处理器中,使用PWM(脉宽调制)算法,对采集到的信号进行运算处理,输出运算结果(角度)控制舵机带动转盘机构等机械装置完成离合动作,实现FSC赛车的电动智能离合。 相似文献
90.