条状魔芋食品成条稳定性的研究

利用微电脑变频这一新技术手段来改进现有条状魔芋食品的生产工艺,并对全数字微电脑变频调速器输出频率、魔芋精粉膨化物温度及精粉的使用浓度与条状魔芋食品成条性状和成条稳定性的关系进行了研究。通过多因素组合试验的结果表明:当全数字微电脑变频调速器的输出频率为25Hz、魔芋精粉膨化物的温度为40℃、魔芋精粉的使用浓度为0.028g/mL时,条状魔芋食品的成条性状和成条稳定性最好     

Not in my body: BGH and the rise of organic milk

The advent of rBGH (recombinant bovinegrowth hormone) has spurred the establishment of anorganic milk industry. The food systems/commoditychain analytical framework cannot fully explain therise of this new food. An adequate understanding ofthe consumer's role in the food system/commodity chainrequires more attention to consumption as a form ofpolitics. One way to do this is to look at thepolitics of other new social movements, especiallythose contesting mainstream notions of risk. From thisapproach, organic milk consumption challenges rBGHfrom a ``Not-in-my-Body' or ``NIMB' politics of refusal,similar to the political refusal of neighborhoodresidents in ``Not-in-My-Backyard' or ``NIMBY'environmental movements. The NIMB form of politics isnot a social movement of politically consciousconsumers, yet it is still a political activity inwhich consumers participate in the formation of theindustry through a process of ``reflexive consumption.'An analysis of producer-consumer discourse on milkcartons reveals the nature of this political formation.     

食物含水量及饲养密度对家蝇生长发育的影响

试验结果表明,用不同含水量的豆渣饲养家蝇,其卵孵化率、幼虫存活率、幼虫期、化蛹率、幼虫体重等均有明显差异,在供试食物含水量为50％～90％时,以食物含水量70％～80％最有利家蝇的生存和体重增长。在不同的饲养密度下,幼虫体重、幼虫期、化蛹率等均有明显差异,随着饲养密度的增大、幼虫体重体长减小、幼虫期延长、化蛹率降低,体重与饲养密度之间的关系符合Logistic方程W=K／e^a-rp(W为幼虫重、P为饲养密度,K为环境容量)。以豆渣和麦麸为家蝇幼虫培养基质时,最佳养殖密度范围分别为18～35头/g和20～30头/g。     

Drainage and Agricultural Development

This paper explores the role of drainage as aninstrument for agricultural and rural development andthe related drainage development forces and processes.Five specific roles of drainage are distinguished:foodproduction, agricultural intensification anddiversification, sustainable irrigated land use, ruraldevelopment and environmental protection. Specialattention is given to the drainage development needsof the developing countries. It is argued that whileat early stages of agricultural development, drainagedevelopment is generally driven by ongoingagricultural development, at later stages ofdevelopment these roles often reverse withagricultural development risking to become stagnatedwhen drainage is not improved. These relationshipsshould be taken into account in the design of drainagedevelopment programs and projects. It is emphasizedthat improved drainage can contribute to establishinga more diversified, competitive and sustainable typeof agriculture, enhance sanitary and public healthconditions and generally contribute to ruraldevelopment, rural well being and poverty alleviation.Drainage development in the developing countries ishowever often severely constrained by the lack of supporting public policies, institutional frameworksand professional cadres. Overcoming these constraintsshould be given high priority on the national andinternational drainage development agendas.     

Responses of the parthenogenetic isopod, Trichoniscus pusillus (Isopoda: Oniscidea), to changes in food quality

Long-term observations of Trichoniscus pusillus revealed that chemical composition and microbial activity of the leaf litter serving as food influenced the reproductive success of females and the mortality rates of juveniles as well. Of the food sources investigated, only alder litter, exhibiting high microbial activity, allowed the maintenance of a stable population with frequently reproducing females. This study concludes that the food type is a significant factor for population parameters of this parthenogenetic isopod. Our results on T. pusillus, belonging to the taxon Synocheta, are compared with data on terrestrial isopod species of the taxon Crinocheta.     

Universal Chart Generation Method on Web Pages

The development mode of MIS application program is transferring from C/S mode to B/S mode.The visualization of data will paly an important role in MIS application program.Many commercial data chart activex controls are used to realize the data chart,such as Microsoft activeX control MSCHRT20.OCX,but some important properties and methods of this control are disabled on WEB pages based on B/S mode.In practical application point of view,a universal chart generation method on web pages is presented in this paper.All kinds of complicated data chart such as statistical chart can be easily be processed to show on web pages by using this method.The detailed implementing steps are also given in this paper.     

Technology of Developing CAI Courseware Based on Web

This paper introduces specificities of CAI courseware based on network,the configuration and connection of courseware server, compares several technologies to develop CAI courseware based on network, discusses technical key points to develop courseware based on campus network.     

摄食水平和饵料种类对3种海洋鱼类生长和生长效率的影响

采用室内流水模拟法测定了摄食水平与铒料生物种类对真鲷、黑鲷、黑Ｊｕｅ特定生长率和生长效率的影响。３种实验鱼类的物壹生长率均随摄食水平增大呈减速增长趋势。二者间的定量关系和对数曲线描述;而其生长效率则均随摄食水平增大呈倒“Ｕ”形变化趋势。二者间的定量关系可用二次曲线描述,曲线相关检验结果表明,其特定生长率和生长效率与摄食水平之间均呈显著相关关系。依据上述定量关系,分别求得３种鱼的维持摄食量和最佳摄食     

氢化物发生原子荧光法测定食品、水产品及饲料中硒的方法研究

应用ＡＦＳ－２２０１型双道原子荧光光谱仪对氢化物发生原子荧光法测定食品、水产品及饲料中微量元素硒的方法进行研究。采用改进的ＨＮＯ３－ＨＣＩＯ４湿式消解法消解样品,并对各种最佳分析进行探讨和验证。方法的检出限为０．４ｎｇ／ｍｌ,线性范围为０～４００ｎｇ／ｍｌ,回收率为８８．４％～９８．５％。用标准物质对照,其测定数据完全在标准值范围内,该方法具较多优点,适于各种含硒样品的测定。     

日本核污水排放背景下我国食品安全综合法制研究

随着我国社会的不断发展和经济水平的提高,人们对环境污染和食品安全问题愈发重视。针对日本核污染水排入海洋事件,我国政府为了保障国人的食品安全,对日本采取了全面暂停从其进口水产品等措施,日本第二次核污水的排放,更加引发了人们对于食品安全的广泛关注和担忧。对日本核污水排放造成的食品安全问题与应对措施进行了研究,以期为我国食品安全的维护提供借鉴。