Development Review and Prospect of Wing-in-Ground Effect Craft

介绍了国内外地效飞行器发展情况和研制的最新进展,对其特点和应用前景进行了叙述,分析了地效飞行器发展中存在的技术障碍,探讨了地效飞行器的发展方向

The Application of In Situ Hybridization Technique with RNA Probes

目的:检测基因在动物组织或细胞中的时空表达模式。方法:转录反义RNA探针;利用RNA原位杂交技术检测人和小鼠牙原基中若干基因的表达。结果与结论:通过优化条件,转录出完整的反义RNA探针,并成功地利用RNA原位杂交技术在组织中检测到基因的表达;分析了一些在RNA原位杂交的过程中可能碰到的问题及其解决方法。Objective:To detect the temporal and spatial expression patterns of gene in animal tissue.Methods:Anti-sense mRNA probes were transcripted and RNA in situ hybridization was performed to examine the expression pattern of genes in the developing mouse and human tooth germ.Results & Conclusions:The anti-sense probes were transcripted completely and the gene expression were detected successfully.Some problems concerned in the process were analyzed,and the methods how to resolve it base on our past experiences were given.福建省科技项目(2002I006,C0320002

福建沿海侨乡农村篮球运动开展现状与发展对策的研究

通过对福建沿海侨乡农村篮球运动开展现状的调查研究 ,既肯定其成绩又指出不足 ,同时提出一些发展对策 ,为我国广大农村开展篮球运动起到宣传和借鉴意义

The Hydraulic Cylinder with Extensive Position Controlled Piston Rod

该文介绍了一种活塞杆伸出量可测并可控的液压缸。该缸利用滚珠丝杆将活塞杆的直线位移转化为丝杆角位移的方法进行位置测量,其结果由光栅编码器输出并传送到控制中心,由控制中心控制伺服阀的阀口方向和开口大小,从而对液压缸活塞杆产生控制作用。本文对其原理进行了阐述,并对可能存在的测量误差进行了分析。This paper introduces a hydraulic cylinder that its piston rod extension can be effectively controlled,linear displacement of the piston rod can be changed into the screw angular displacement by ball screw,then the distance are outputted by grating angular displacement sensor to the control center,valve port opening direction and size are controlled by the control center and then hydraulic cylinder piston rod is controlled so.This paper describes its principles and demonstrates its feasibility

The Organizational Control Strategy against Employee Counterproductive Work Behavior:An Empirical Research from Social Cognitive Perspective

本文基于社会认知的视角探讨中国企业员工反生产行为(CWb)的组织控制策略,采用跨层次分析的方法对27家企业的426名员工进行了实证研究。结果发现:虽然中国企业员工的尽责感和神经质人格特质对其CWb具有显著影响。但是,由于自利和规则导向的组织伦理气氛以及领导公正和信息公正作为重要的组织情境,不仅可以直接对CWb产生显著影响,而且还对人格特质与CWb之间的关系起到复杂的调节作用。因此,中国企业可以综合采用员工人格特质测试、组织伦理气氛培育以及组织公正环境建设等策略来进行员工CWb的组织控制。This article investigate the organizational control strategy of Chinese enterprises employee's counterproductive work behavior( CWB) from the perspective of social cognitive,using cross-level analysis method to do empirical research based on 426 employees from 26 enterprises.The results show that although Chinese employee's conscientiousness and neuroticism personality trait have the significant personality,but instrumentalism and rule oriented ethical climate,leader justice and information justice are very important organizational context,they not only have significant affect to CWB respectively,but also complex moderate the relationships between personality trait and CWB.So,Chinese enterprises can use a variety of strategies to control the employee's CWB such as employee personality test,organizational ethical climate cultivation,organizational justice environment construction,and so on.国家社会科学基金项目(14CGL018); 教育部人文社会科学规划基金项目(11YJA630057); 国家自然科学基金项目(71302175

EFFECT OF ELECTRON DONOR AND ACCEPTOR ON CAPACITIES OF AMMONIA-RESITANT FROM AZOTBACTER VINELANDII

电子供体连二亚硫酸钠、甲基紫精及电子受体亚甲蓝均能强烈抑制棕色固氮菌表达固氮活性 ,并引起该菌的抗氨阻遏能力减弱。适当提高氧压 ,能提高菌体的固氮活性近1 5 % ,但过高的氧分压反而抑制菌体的固氮活性。此外 ,提高氢分压能降低棕色固氮菌菌体内的还原电位 ,从而达到提高菌体抗氨阻遏能力的效果。Electronic donors dithionite as well as m et hyl viologen and it receptor methylene blue strongly inhibited activity of nitro gen fixation that Azotobacter vinelandii expressed,which ca used capacity of ammonia-resistant weaken greatly.About 15% of total activity f rom the whole cell were risen by increasing suitable oxygen atmosphere.Opposite, t he activity was inhibited by increasing over concentration of O 2 further.The r eduction potential in the inside environment from Azotobacter vinelan dii whole cell shifted to negative by increasing hydrogen pressure,whi ch resulted in its capacity of ammonia-resistant rose.福建省自然科学基金资助项目 (No . 960 0 6

我国中小体育用品生产企业产业集群集聚研究——以福建晋江运动鞋产业集群为实证

入世后,我国中小体育用品业面临着国外知名品牌企业的竞争威胁,引起了我国业内人士的高度重视;产业集聚战略已成为提升区域竞争力的重要措施之一。以晋江运动鞋行业为例证,分析了我国中小体育用品生产企业产业集群集聚竞争优势和形成条件

The application and research of the aircraft flexible fixture

主要研究气动、液压与电传技术在航空制造业中装配工艺中的应用。对研制出数控机床气动柔性夹紧系统,及其在飞机上零件加工上的应用进行了详细论述,包括柔性系统的机构组成、工作原理及PlC控制系统。该技术的突破为我国飞机数字化加工装配提供了参考价值,并将促进航空制造业的跨越式发展。The application of the pneumatic,hydraulic and power transmission for assembly process and equipment in aviation manufacturing industry is study.A novel type of CNC Aircraft Flexible Fixture machine system has been made out,and applied in manufacturing the aircraft parts.The system is including in architecture of the composition,working theory,PLC control system.It has a great signification of the manufacturing technology for aircraft digital processing,manufacturing and assembling,and promoting the developing of aircraft manufacturing

应用“血防846”等药物驱除羊只胰阔盘吸虫的试验报告

家畜胰阔盘吸虫病广泛流行于世界各地。在我国主要分布于东北、内蒙、西北一带的广大农牧区;南方的福建、江西、浙江、广东、广西、贵州等省、区也有报道。 胰阔盘吸虫不仅寄生于羊、牛、猪、骆驼等家畜,而且也可感染人体,威胁人类健康。胰阔盘吸虫寄生于家畜的胰管中,由于机械性刺激、堵塞,以及代谢产物的作用,营养的夺取,引起胰脏的机能障碍和形态改变,如胰管的高度扩张,管壁增厚,粘膜出血、溃疡、炎性细胞的浸润,整个胰脏结缔组织增生,呈慢性增生性胰腺炎。从而使胰液腺和胰岛素的生成、分泌发生改变,全