Tencel与蚕蛹蛋白纤维/Modal混纺纱交织宽幅缎条织物的开发

探讨生产以Tencel短纤纱为经纱,以蚕蛹蛋白纤维/Modal混纺纱为纬纱的宽幅缎条织物的工艺要点,通过合理设计整经、浆纱以及织造各工序的工艺参数,在宽幅喷气织机上成功开发生产出Tencel与蚕蛹蛋白纤维/Modal混纺纱交织高密宽幅缎条织物,织机效率达87%,入库一等品率达92.5%。     

从酸化液腐蚀性检验中引发的几点思考

介绍了大庆油田酸化技术的发展史和技术现状,对大庆油田几年来酸化液腐蚀性检验中出现的问题及现象进行介绍和分析．对缓蚀剂用量不合理和点蚀的危害性进行阐述,同时介绍了目前常用单一型和复配型缓蚀剂、缓蚀剂适用酸化液类型及缓蚀剂适用井别,并对缓蚀剂用量、酸化液添加剂的选用、酸化液配制及监督等提出几点建议。对进一步提高大庆油田的酸化液产品质量．减少对地层造成的二次伤害,提高施工设备和管柱的使用寿命,减少施工事故,提高酸化液产品的性价比等,具有一定的指导意义．     

Tourism and rural settlements Nepal’s Annapurna region

Functional and humanist perspectives relevant to counterurbanization studies are applied to examine the processes of growth and development of rural settlements affected by tourism. Based on a survey of tourism lodges located in several settlements in the Annapurna region of Nepal, this paper analyzes tourism-induced growth in such accommodations and its implications on changing characteristics. Results suggest the emergence of a hierarchical structure of rural settlements with core and peripheral traits. A normative classification of induced patterns defined by their development stage, size, and function is proposed. Historical, social, and economic influences on the transformation of rural settlements are discussed.     

一种融合遮挡分割的多目标跟踪算法

复杂环境下的多目标视频跟踪是计算机视觉领域的一个难点,有效处理目标间遮挡是 解决多目标跟踪问题的关键。提出了一种融合遮挡分割的多目标跟踪算法,计算每个目标 的光流速度概率直方图,反映其运动统计信息;综合使用外观、运动、颜色信息构造新的像 素距离表达,借助分阶段分类思想及K均值聚类技术进行遮挡分割,得到准确的运动前景 像素;在粒子滤波器跟踪框架下,使用概率外观模型进行多目标跟踪,更好地处理动态遮挡 问题。实验表明,所提算法解决了复杂环境下的多目标跟踪问题。     

大豆分离蛋白的功能特性、应用及营养价值

随着现代营养学和国际食品行业的发展趋势,优质植物蛋白——大豆分离蛋白,将成为21世纪促进人类健康的主流食品。开发植物蛋白系列食品符合我国国情和长期发展战略。本文介绍了大豆分离蛋白的部分功能特性、在食品行业的发展以及其主要营养价值。     

响应面法优化豌豆分离蛋白提取工艺

试验采用碱溶酸沉的方法提取豌豆分离蛋白,探讨各个因素对提取率的影响。研究了料液比、浸泡时间、浸泡温度、pH对豌豆分离蛋白提取率的影响。利用响应面分析法优化工艺参数,最后确定豌豆分离蛋白的最佳提取条件为：料液比1：23,浸泡时间53min,浸泡温度47℃,pH8．8,其中蛋白质含量高达90．24％。     

碱性蛋白酶提取杜仲籽粕蛋白的工艺优化

采用二次通用旋转组合设计实验优化超声波辅助碱性蛋白酶提取杜仲籽粕蛋白工艺。在单因素实验基础上,选择pH值、碱性蛋白酶用量、酶解温度与酶解时间为考察因素,以杜仲籽粕蛋白提取率为响应值建立回归数学模型,对杜仲籽粕蛋白提取工艺条件进行优化。结果表明,最佳提取工艺条件为：pH10,碱性蛋白酶用量320u／g,酶解温度55℃,酶解时间115rain。在此优化条件下,杜仲籽粕蛋白提取率可迭74．28％。     

Where to implement local biotech innovations? A framework for multi-scale socio-economic and environmental impact assessment of Green Bio-Refineries

Green Bio-Refineries (GBRs) have economic and environmental potentials through changing land use from cereals to grass production and provision of grass-based protein feed for livestock production and other valuable byproducts. However, the potentials are dependent on local conditions of the GBRs, such as land productivity, environmental sensitivity and transport distances for feedstock as well as the regional economy which GBRs are a part of. In this paper, we compare the total (direct, indirect and induced) effects of different location choices of GBRs in Denmark at different (municipal, regional, national) scales − a key step for decisions about development of GBRs from both investors' and authorities' perspectives. We integrate a local life-cycle assessment (LCA), a geographic information system (GIS) analysis and an economic-environmental input-output (EEIO) based model (LINE) into a common framework (GIS-LCA-EEIO). We show that locating GBRs in Western Denmark, where the soils are primarily sandy and livestock densities are high, generates higher socio-economic gains than in Eastern Denmark, where the soils are primarily loamy and the concentrations of livestock are lower. We conclude by sketching out priority areas for developing GBRs and discuss the policy implications of the results within the context of development of a bio-based economy.     

响应面法优化碱性蛋白酶提取野生山核桃籽粕蛋白

为研究响应面法优化碱性蛋白酶提取野生山核桃籽粕蛋白质的工艺,在单因素试验的基础上考察了加酶量、pH值、提取温度和提取时间等条件对蛋白质提取率的影响。采用Box-Behnken Design试验设计,进行四因素三水平的中心组合试验,建立了蛋白质提取率与各主效因子的二次回归模型方程。结果表明,最佳提取条件为加酶量4．0％、pH12．0、温度47℃、提取时间2．0h。在此条件下,蛋白质提取率可达81．90％。     

含乳饮料中蛋白质含量测定结果的不确定度评定

对凯氏定氮法测定含乳饮料中蛋白质含量进行测量不确定度来源分析,结果的适用性给出合理的建议.依据JJF 1059.1—2012,分析测量过程中影响不确定度的因素,进行评估合成.结果表明,空白测定和测量重复性是主要的不确度来源,含乳饮料中蛋白质结果为1.53 g/100 g时,扩展不确定度为0.13 g/100 g,因此蛋...