分光光度法测定叶绿素a含量的方法探讨

通过对用分光光度法测定叶绿素a含量的两种方法的比较,选择出一种准确、合理的分析方法。针对该分析方法关于比色时间、检测下限及最大取样量的确定问题进行了探讨。     

带式输送机导料槽长度的计算方法

推导了导料槽长度的计算公式,提出根据计算值合理选取导料槽的段数，给出了计算实例。     

Adaptive synthesis of distance fields

We address the computational resource requirements of 3D example-based synthesis with an adaptive synthesis technique that uses a tree-based synthesis map. A signed-distance field (SDF) is determined for the 3D exemplars, and then new models can be synthesized as SDFs by neighborhood matching. Unlike voxel synthesis approach, our input is posed in the real domain to preserve maximum detail. In comparison to straightforward extensions to the existing volume texture synthesis approach, we made several improvements in terms of memory requirements, computation times, and synthesis quality. The inherent parallelism in this method makes it suitable for a multicore CPU. Results show that computation times and memory requirements are very much reduced, and large synthesized scenes exhibit fine details which mimic the exemplars.     

Functional properties of collagenous material from chicken feet

Collagenous material was obtained from chicken feet skins and tendons, defatted with ethylic ether and treated with 0.05 M and 0.6 M NaCl solutions. Part of the material was dried at 35 degrees C in a forced air convection oven and another was freeze-dried. The air dried material had 77.2 g/100 g of collagen and the freeze-dried material 76.7 g/100 g. Both dehydrated materials showed the same behaviour for gel formation and cold water holding capacity. The material air dried had higher emulsifying capacity than the freeze-dried one. The collagen of freeze-dried material had higher solubility in 0.5 M acetic acid and water at 70 degrees C than air dried material. Gel strength, emulsion stability and water holding capacity at 60 degrees C were higher for freeze-dried material. The results indicate the potential use of these materials as functional ingredients in meat products.     

甲胺基阿维菌素苯甲酸盐等对棉铃虫的室内毒力评价

采用微量点滴和夹毒叶片法测定了甲胺基阿维菌素苯甲酸盐等几种杀虫剂对棉铃虫的触杀及胃毒毒力，又采用了虫体浸渍法和食叶浸渍法测定了其对棉铃虫的室内防盗。甲胺基阿维菌素苯甲酸盐对棉铃虫有着极高的胃毒毒力，其LC50为1．0086mg/L。     

有机硅废渣浆无害化处理技术研究通过验收

由吉林石化公司研究院开发成功的有机硅废渣浆无害化处理技术研究成果，最近通过中油公司组织的专家验收。