Detection of the end point temperature of thermal denatured protein in fish and chicken meat through SDS-PAGE electrophoresis

Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) was applied in the detection of the end point temperature (EPT) of thermal denatured protein in fish and meat in this study. It was also used in studying the thermal denatured temperature range of proteins in salmon and chicken meat. The results show that the temperature ranges of denatured proteins were from 65 ℃ to 75 ℃ , and these temperature ranges were influenced by the processing methods. Through SDS-PAGE, the features of repeated he...     

Comparisons of several evaporation/precipitation datasets for the Bohai Sea based on salinity simulation

Evaporation (E) rate and precipitation (P) rate are two significant meteorological elements required in the ocean baroclinic modeling as external forcings. However, there are some uncertainties in the currently used E/P rates datasets, especially in terms of the data quality. In this study, we collected E/P rates data from ERA-40, NCEP/NCAR Reanalysis, HOAPS for the Bohai Sea and nine routine stations around Laizhou Bay, and made comparisons among them. It was found that the differences in E/P rates between land and sea are remarkable, which was due to the difference in underlying surfaces. Therefore, the traditional way of using E/P rates acquired on land directly at sea is not correct. Since no final conclusion has been reached concerning the net water transport between the Bohai Sea and the Yellow Sea, it is unfeasible to judge the adequacy of the four kinds of data by using the water budget equation. However, the E/P rates at ERA-40 sea points were considered to be the optimal in terms of temporal/spatial coverage and resolution for the hindcast of salinity variation in the Bohai Sea. Besides, using the 3-D hydrodynamic model HAMSOM (HAMburg Shelf Ocean Model), we performed numerical experiments with different E/P datasets and found that the E/P rates at sea points from ERA-40 dataset are better than those from NCEP/NCAR Reanalysis dataset. If NCEP/NCAR Reanalysis E/P rates are to be used, they need to be adjusted and tested prior to simulation so that more close-to-reality salinity values can be reproduced.     

Matlab在测量实习教学中的应用

从测量实习教学特点出发,利用Matlab编制了水准、导线和视距测量内业计算程序.该软件界面友好,操作简单,运行效果良好.与电子经纬仪配合,可在一定程度上解决目前许多高校全站仪尚未普及的问题.     

CORS用户管理系统的研究与实现

利用了GNSS／GIS集成、ASP．NET技术,开发了基于C／S和B／S模式相结合的系统,实现了CORS系统业务管理的自动化、网络化、规范化。     

利用GPU实现基于物理模型的流体运动仿真

纳维-斯托克斯方程是描述流体运动的基础物理模型。首先简要介绍了在计算机上实现该模型的数值解算方法。在流体运动的计算机视觉仿真中,密度渲染才是最终结果,因此,又阐述了流体的密度场与速度场的关系,并且给出了流体仿真的基本流程。由于可编程图形处理器(GPU)具有并行性和速度快等特点,流体模拟的解算和渲染在图形处理器上运行更加高效,但是利用GPU编程实现流体仿真必须要实现3个核心转换,最后以支持3维纹理的Direct3D10为例,给出了利用GPU实现流体运动仿真两个简单实例。     

高分辨率遥感影像在云南澜沧老厂矿床地质研究中的应用

在云南澜沧老厂矿床地质研究中,高分辨率QuickBird 影像提供了丰富的地质异常信息:影像线-环结构反映出矿床的控矿环形构造及隐伏构造信息;影像色调异常斑块显示了地面围岩蚀变区域;遥感异常与物化探异常的高度吻合,为地质构造分析和成矿预测提供了有用信息和佐证.     

Skyline精细地形场景生成探讨

提出了Skyline精细地形场景生成的解决方案,并针对业务思路、业务流程进行了详细介绍,同时,通过实例说明方案的可行性,为工作开展提供了便利。     

海底孔内水合物观测系统与钻井实施

通过耦合布设海底表面和孔内水合物观测系统获取物理、化学、微生物等数据是了解掌握海洋水合物环境动态变化、碳循环规律和资源开发技术的有效手段,据此初步提出了一套海底孔内水合物观测系统,并指出了系统的关键技术难点。而在钻井布设该孔内观测系统时,要注意防止井内安全事故的发生,充分评估安放位置处含水合物地层的地质力学稳定性并采取适当的钻井和完井方式稳定或强化含水合物地层以支撑孔内观察仪器,实现孔内长期监测。最后讨论了在我国南海实施孔内水合物观测系统的必要性,并提出了初步想法。     

寻路地图设计中相关问题研究

以郑州市街头的寻路地图为例,对其设计现状进行了分析,指出了这些地图的特点和其在设计上存在的不足之处.根据寻路地图的目的和用户的特殊性,制作了寻路地图样图,并就其在定向和路线选择等方面进行了试验,对实验结果进行了分析和研究.结果表明地图内容、参考方向和地图符号是影响用户定向和路线选择的主要因素.以此为基础,得出了寻路地图设计中应当遵循的一些规律.