困难条件下的媒巷锚杆控顶技术研究

阳方口矿业集团公司下设程家沟矿、石湖矿，石湖矿主采2^#煤层为复合顶板，程家沟矿主采煤层5^#层为典型的“三软”煤层，均为困难条件下的煤巷锚杆支护。通过总结近年采煤巷锚杆支护的工程实践经验和研究结果，提出了困难备件下煤巷锚杆支护的顶板控制技术。     

新型垂直沟道的NPN型偶载场效应晶体管的设计及特性

研制了一种新模式的半导体场效应晶体第－－垂直沟道的偶载场效应晶体管（VDCFET），这种结构可以避免现有光刻技术的制约，使用常规的半导体双极晶体管工艺，既可把有效沟道长度减短，大大提高器件的速度，又可将电源电压降低到小于1V，大幅度降低功耗，改进其电学性能。本器件可应用于高频电路、D触发器、环振电路及反相器等重要电路。从纵向和横向报道了器件的设计思想，并给出了器件特性的测量结果。     

载波端机特性自动测试简述

载波通信是铁路长途通信的重要通信手段之一。为进一步提高通信质量和维护效率,对载波机特性采用自动测试的方法是势在必行的。受铁道部电务局的委托,我们于1985年8月开始研制自动测试仪的性能样机。本文首先给出了总体组成方框。进而简述了各硬件部分和软件的基本原理。最后对比人工测试的方法,论述了本仪器的特点:①体积小,造价低廉;②能自动测数、自动数据处理;③有自检功能;④提高了测试精度;⑤仪器具有可扩展性。     

转变观念发展高职

本文针对中专升格的高职学院,运用系统的观点,探讨转变办学观念的载体,提出发展高职“五制”的技术内涵。     

潜空导弹运载器水下弹道仿真研究

在建立适合于运载器六自由度运动的数学模型的基础上,建立了光纤对运载器作用力的数学模型,然后对潜空导弹运载器的水下弹道进行了仿真研究.结果表明运载器运动稳定,控制规律合理.     

深圳港液化天然气船航行安全风险评估

对中国第一座海运LNG接收站LNG船航行安全进行了安全评估.采用美国海岸警卫队的《基于风险的决策指南(RBDM)》中的预先风险评估方法(PrRA),使用了事件树方法和风险指数方法.根据ALARP原理,评估出三种情景属于需改进的范围,针对评宿结果提出了五条减少风险水平的建议.     

Multi-objective carrier chaotic evolutionary algorithm for DNA sequences design

DNA computing is a new vista of computation, which is of biochemical type. Since each piece of information is encoded in biological sequences, their design is crucial for successful DNA computation. DNA sequence design is involved with a number of design criteria, which is difficult to be solved by the traditional optimization methods. In this paper, the multi-objective carrier chaotic evolution algorithm (MCCEA) is introduced to solve the DNA sequence design problem. By merging the chaotic search base on power function carrier, a set of good DNA sequences are generated. Furthermore, the simulation results show the efficiency of our method.     

Dialdehyde starch nanoparticles： Preparation and application in drub carrier

Dialdehyde starch nanoparticles (DASNP) were prepared by the redox reaction of NaIO4 and starch in water-in-oil microemulsion. IR spectrum showed that DASNP had aldehyde groups, and quantitative alkali consumption showed that its dialdehyde content was about (50±5)%. The average diameter of DASNP determined by SEM was about 100 nm. TGA-DTA showed that its thermal stability was better than starch nanoparticle (StNP) and dialdehyde starch (DAS). Its low biological toxicity was detected by cell experiment. Also the best mass ratio of doxorubicin (DOX) to combined DASNP detected by UV-VIS was 15 : 1, and the product was effective for controlled release of DOX. The cell experiment showed that the drug-carrier particle (DOX-DASNP) can release DOX for a long time and strengthened the effect of the anticancer drug. This work demonstrates that the DASNP, which has good thermal stability, small particle size, low biological toxicity, and slowly anticancer drug-releasing to strengthen drug effect, is a potentially useful carrier for anticancer drug.     

住宅小区智能控制与管理系统

介绍了一种住宅小区智能控制与管理系统的网络结构及其实现，在此系统中，家庭自动化系统采用有线电缆与电力线载波通信相结合的机制；家庭自动化系统与大楼集中控制站之间的通信通过RS485实现；大楼集中控制站、公用设施控制站与小区中央控制站之间的通信通过LONWORKS局部操作网实现。     

有关改变教学方式的苦干问题析论

对从根本上改变现有的教学方式的必要性做了简要的说明；对长期以来导致教学方式几乎没有根本的改变的原因进行了分析论述；提出了新的教学方式构想以及为实现这一构想所应做的事情。