我国透明聚丙烯的研制与生产

1市场需求透明聚丙烯(PP)主要用于制作透明塑料制品,具有透明性好、光泽度高、色泽白净、耐碎裂、手感性好等优点,其力学性能和热变形温度比通用PP高,广泛应用于微波用具、包装材料、医用领域等,如对透明性要求高的用品、食品容器、文具、快餐汤碗、水瓶、米酒瓶、奶瓶、香皂盒、洗涤剂瓶、热水杯、消毒的器具等.因此,各类透明PP牌号是近期世界PP新产品开发方面的一个亮点.     

反舰导弹攻防对抗仿真系统

结合反舰导弹攻防对抗特点,设计了模块化、易扩展、可视化的仿真框架,分析并建立了导引头、制导控制、干扰等关键模块的数学模型,通过加入惯导实物构建了反舰导弹攻防对抗半实物仿真与视景显示系统,进行了空射型反舰导弹全弹道飞行、反舰导弹雷达导引头极化抗干扰两个典型场景的仿真,实验结果表明本系统的研究开发可为反舰导弹作战效能分析与评估提供平台和依据。     

新疆策勒县喜马拉雅旱獭无形体和埃立克体病原的筛查与鉴定

目的 对新疆策勒县捕获的喜马拉雅旱獭进行无形体和埃立克体分子检测.方法 用线粒体细胞色素氧化酶Cytb和形态学对捕获的52只旱獭进行鉴定;基于16S rDNA和MSP4基因片段分别对旱獭的心、肝、脾、肺、肾、小肠和大肠进行埃立克体和无形体基因检测,PCR阳性产物进行测序和遗传进化分析.结果 捕获的52只旱獭均为喜马拉雅...     

碳钢屑/活性炭混合反应器对焦化废水的预处理

研究了碳钢屑/活性炭混合床反应器对焦化废水中COD的去除效果及其影响因素,并依据腐蚀电化学原理对机理作了探讨。结果表明,碳钢屑/活性炭混合床反应器可以有效地去除焦化废水中的COD,其去除率能达到80%左右;在2 h左右的反应时间里,pH值对去除效果的影响仅为3%,加入絮凝剂可使去除率提高5%左右;碳钢屑/活性炭混合床反应器对焦化废水中COD的去除主要是通过电絮凝起作用。     

Mesencephalic Progenitors Can Differentiate into TH—Positive Neurons and Improve Dysfunction in PD Rats

This study investigated the possibility of using mesencephalic progenitors (MPs) in the treatment of Parkinson‘s disease (PD). MPs were prepared from El1-13 rats and proliferated in the serum-free medium with basic fibroblast growth factor (bFGF) for 10 days. Cells were then collected and implanted into the striatum only--single grafts, or simultaneously into the substantia nigra (SN) and the striatum--double grafts. Twelve weeks after transplantation, 1,1‘-dioctadecyl-3,3,3‘,3‘-tetramethylindocarbocyanine perchlorate (Dil), a fluorescent dye, was microinjected into the ipsilateral striatum. The results show that double grafted MPs have more potent effects on rotational behavior than single grafted MPs. Injection of the retrograde tracer Dil into the striatum results in fluorescent-labeled cells within the intranigral grafts only in double graft subjects. These data suggest that MP transplants not only can improve rotational behavior, but also help to reestablish nigrostriatal connections, so that such transplants may become an efficient way of treating PD.     

神经网络在大尺度采空区损伤演化统计与预测中应用

利用神经网络结构计算方法对岩石基复合材料支护大尺度采空区动力损伤演化趋势进行统计和预测，并与工程现场多种方法的综合监测数据进行了比较，其结果完全吻合。     

为生命坚持到底

2003年1月底,正是农历新年的除夕,广州中山医科大学附属第三医院收治了广州市的三名"非典型肺炎"重症患者,其中包括后来被称为"毒王"的重症患者.患者当时有频繁的咳嗽,并伴有严重缺氧,非常烦躁.     

原棉性能与细纱比强度之间关系的研究

通过对大批原棉进行试纺实验，运用多元相关理论，结合主成分分析方法，探索原棉的物理性能和成纱比强度间的关系，求得的方程具有很好的拟合效果．     

与时俱进 奋发有为做好学校合并过渡期的思想政治工作

针对学校合并过渡期教职工的思想状况，提出进行融为一体教育，做到“三个讲清楚”，开展三大主题活动，以谋求合并的最佳效果。     

Identification of Wool and Cashmere

The quality number66 wool and the first grade cashmerewere tested and analyzed by using the scanning electronmicroscope(SEM)and the probability distribution of thediameter,the surface scale height and the surface scalethickness of the wool and the cashmere were got,thenthe error identification probability(EIP)of the three pa-rameters were calculated.After verifying that these threeparameters were linear non-related,by using the prob-ability theory,the EIPs of these three parameters weremultiplied,thus,the total EIPs of the wool and the cash-mere were reduced.The result of the experiment verifiedthis conclusion.