Influence of Hydrogen on Impact strength and Microstrcture of the Titanium Alloy Ti-Al-V

Absract:After analyzed and tested the composition, microstructure and the mechanical property for the forging timber of the titanium alloy Ti-Al-V, Processed it into lash test samples , and made the samples having different hydrgen-content by the way of artificial hydrogen-absorption. Next, measured the impact strength vaules(ak ) of the titanium alloy in different hydrogen-content, and drawn the relation curve between the impact strength and the hydrogen-content. Afertwards,four samples and themselves impact fractographies whose hydrogen-contents are 48ppm,137ppm, 361ppm and 666ppm have been used for phases and the sweep electorn microscopes,Known microstructures and shapes of the hydrogenate of the different hydrogen-content tianium alloy and that the hydrogenate is sheet and its distribution in the titanium alloy.     

Image Secure Communication Based on Logistic Map

The chaotic sequences generated by logistic map are used as the carrier, and the image secure communication scheme is proposed based on that the sequences possess a good correlation property. Promising results are obtained on Lenna image by computer simulation. The obtained results indicate that the transmitted source image can be correctly recovered and the proposed scheme is reliable when transmitter and receiver using identical initial value even under the situations of a noisy channel. However, the tiny difference of initial value between transmitter and receiver will result in failure to communication. Finally, the quality of recovered source image is assessed, and the approximate formula of bit-error rate in term of code length is also obtained.     

Towns of Chongqing Sustainable Development Objective Appraisement

Master towns of Chongqing includes Wanzhou, Fuling, Jiangjin, Huochuan and Yongchuan. According to the stratage of developing Western China and urbanization, this article discusses tendency of sustainable development in towns of Chongqing. Applying `evaluation method of arrangement model' and `analyze method of equal difference ', the authors find the short wming of the quality of urbanization and the sustainable development in five towns. So the article takes center city and towns construction and set up cooperation mechanism between the five cities that will be sure to increase momentum and ability of Chongqing for Sustainable development object.     

Two-dimension Opto-electronic Test Method to Determine the Cancellous Bone Porosity

A two dimension opto electronic test method has been developed to determine the distribution characteristics of cancellous bone porosity. The fresh pig tibiae concellous bone in behind leg was sectioned. A total of 36 cancellous bone sections were divided two groups. The first group consisted of 18 transversal sections along the axial direction, and the second group consisted of 18 axial sections along the transversal direction of the tibiae. Their images were examined microscopically and processed quantitatively. The total area, solid matrix area and pore area of each specimen and its porosity were determined, too. The cancellous bone porosity is gradually decreased along the axial direction of tibiae and approaching to the compact bone, but almost constant along the transversal direction. Cancellous bone is modeled as a transversely isotropic, liquid saturated porous solid. The two dimension opto electronic test method can be used to relatively accurately determine the distribution characteristics of the cancellous bone porosity from different directions if the cancellous bone sections are enough.     

Health Record Management System in Visual Electroencephalograph

Visual Electroencephalograph (VEEG) is a new type of digital, information electroencephalograph. As an important part of Visual Electroencephalograph, Health Record Management System(HRMS)is integrant to store electroencephalographic data plentifully, show and edit their waveforms, analyze the data on line or off line. By the most popular and steady Relational-Database technology, ADO Application Programming Interface (API) and Visual C++ programming tool, the system has the friendly interactive interface and the functions of adding, updating, deleting, recalling, counting health record information, etc. Integrated with other parts of VEEG, HRMS ameliorates traditional EEG and overcomes some disadvantages of it such as discommodious to record, difficult to read and hard to get useful information. This paper introduces main functions, structure design and components of Health Record Management System.     

树莓的栽培与管理措施

基于昭苏县的自然条件,树莓春栽应在土壤解冻后苗木萌发前,以土壤10～20cm地温稳定在10℃以上为宜;秋栽在苗木质化后至土壤结冻前为好.为缩短缓苗期,提高成活率,要勤浇、少浇水,保持土壤湿润.为提高效益,对土壤较肥沃地块.可在行间套种喜荫矮作物.在开花后至幼果形成期,以施氮肥为主;果实形成后,以磷钾为主;施基肥宜在早秋,以腐熟的农家肥为主.     

新疆查干郭勒乡杀虫油剂和伊维菌素联合应用防控家畜蜱虫试验

为探索有效的杀灭蜱方法,减少蜱虫危害,选择新疆阿勒泰地区青河县查干郭勒乡蜱虫流行较严重的一家农户,开展了杀虫油剂和伊维菌素联合应用防控家畜蜱虫试验。试验分为杀虫油剂组、伊维菌素注射液组、杀虫油剂和伊维菌素注射液联合使用组和不用药的对照组。每组有50只不同年龄的牛、羊、马等家畜,其饲养管理、放牧条件、圈室条件都基本相同。杀虫油剂组、伊维菌素注射液组间隔1个月,同法同量进行2次用药;杀虫油剂和伊维菌素注射液联合使用组先使用杀虫油剂,1个月后注射伊维菌素注射液。用药后观察无蜱的维持时间和第1次用药90 d后仍发现蜱的试验动物数量,计算不同试验组的杀虫效果。结果显示,杀虫油剂组、伊维菌素注射液组、杀虫油剂和伊维菌素注射液联合使用组用药后的无蜱维持时间分别为70、60、90 d,预防效率分别为90%、86%、100%。结果表明,杀虫油剂和伊维菌素注射液联合使用,可起到最佳的蜱虫预防效果。     

新疆昭苏县马梨形虫的检测及传播媒介蜱的鉴定

为了解新疆昭苏县马感染梨形虫情况及传播媒介蜱的种类,采用寄生虫病病原常规检查方法、分子生物学技术和血清学检测方法对200匹马进行马梨形虫的检测,对320只传播媒介蜱进行形态学鉴定。结果显示,血液涂片染色镜检红细胞染虫率为9.23%,PCR、cELISA对驽巴贝斯虫的检出率分别为28%和23.5%,对泰勒虫的检出率分别为36%和34%;对马体表和周边环境采集的320只蜱虫鉴定为草原革蜱和森林革蜱2种。本研究为该地区马梨形虫病的防控提供了科学依据。     

畜牧兽医实验室人畜共患病防控措施

国内畜牧兽医实验室的人畜共患病频发,影响了高校畜牧教学项目的有序进行,并且也明显提高了病菌扩散的可能性,使院校师生的工作学习过程伴随较高的染病风险。为切实避免以上情况的发生,就需要先对人畜共患病方面的知识做出阐述,明确实验室人畜共患病的出现因素并做出探讨,最后结合畜牧兽医实验室人畜共患病的征兆和出现因素,给出有针对性的预防方法。