可行性

PartⅡFeasibility of vitrifying normospermic samples using droplets without cryoprotectans Objective Discuss the feasibility of droplets to vitrify normospermic samples without cryoprotectants. Methods Normal prepared sperm were frozen by conventional freezing protocol and non-cryoprotectant freezing in droplets respectively. Freezing in droplets means freezing sperm in every 10ul drop. After thawing, compared the two groups'sperm mobilities.

第二部分微滴法无保护剂玻璃化冷冻正常精子的可行性探讨目的探讨在不添加冷冻保护剂的情况下微滴法玻璃化冷冻正常精子的可行性方法收集16份正常精液标本，上游处理后分别进行慢速冷冻和微滴法冷冻，微滴法即用拉细巴氏管将标本形成10ul的液滴，直接投入液氮内冻存，复苏后镜检其活动率。

At the same time, on the base of analysis of the present situation, the development trend and the leading edge technology, the necessity and feasibility about the exploitation of the full hydraulic bulldozer"s sate monitoring and fault diagnosis system is given; According to the structure, working feature and working environment, it works out system schema and system composition; The system is divided into display module, communication module and fault diagnosis module by means of block design, the implementation method and key parameter are also given; In light of the features of the full hydraulic bulldozer, the state monitoring and fault diagnosis platform composed of controller RC6-9 and display DI2/10 is designed based on CAN-Bus and the hardware design is completed; It lists the measured values and state of monitored parameters which should be real-time displayed in monitoring module as well as the data which will be transmitted; Furthermore, On the base of the study of, it gives 34 kinds of constant faults" diagnosis methods; Using BODAS software and DPS software, it compile the program code of the controller and the displayer; At last, this paper design and make the simulation test device of control system of construction machinery, through the experiment, the realizability, the categoricalness, the reliability, the stability and real-time are tested, in addition, the improved methods are given.

本文收集整理了国内外智能推土机研究的相关文献资料，综合分析了国内外智能推土机的研究现状、发展趋势和前沿技术，论证了开发全液压推土机智能系统的重要组成部分&全液压推土机状态监测与故障诊断系统&的必要性和可行性；根据全液压推土机的结构、作业特点和作业环境，制定了全液压推土机状态监测与故障诊断系统方案，确定了系统的结构组成；采用模块化设计方法，将整个系统分成了显示、通信和故障诊断三个模块，给出了各模块功能的实现方法，确定了各模块的关键技术参数：选用RC6-9和DI2／10作为系统的控制器和显示器，用CAN总线搭建了系统的通信平台，完成了系统的硬件设计；确定了系统监测参数和通信数据，对全液压推土机常见故障特征进行了分析，给出了34种常见故障的诊断方法；在BODAS软件和DPS软件的集成编程环境下，编写了控制器和显示器程序；设计并制作了工程机械控制系统模拟试验板，并在此基础上通过多次的程序调试与试验，对所设计的全液压推土机状态监测与故障诊断系统功能的可实现性、完备性、可靠性、稳定性和实时性进行了检验，证实了此系统的可行性，并提出了进一步的改进方案和措施。

Althought this surgery has been reported by a few doctors recently, the safety and effectiveness need to be evaluated in further studies. In our study, the approach of the chorioretinal venous anatomosis in the model eyes with branch retinal vein occlusion, are induced by different surgical anastomosis procedures, in order to invest the effectiveness and safety and make a pilot clinic treatment exploration. Methods and materials The study was divided two ports: animal experiment and clinical study.

这种治疗方法的可行性和疗效评价，在激光诱导脉络膜视网膜静脉吻合术治疗非缺血型CRVO病人中得到证实；而对缺血型CRVO，由于病情严重，晚期新生血管并发症产生的危险性高，或者已有产生，因此最近开展的用玻璃体切除联合手术吻合脉络膜视网膜静脉的外科治疗作为最新的探索性治疗方法，在国外已见少数病例报告，但是尚需要进一步的研究观察来评价其可行性、安全性和疗效。

The production indicate that the research find out distributing, range, size, geological environment, formative reason and genesic facter of YuQiuHao landslides. At the same time, I calculate and access stability of landslide, put forward scheme of prevention, access economic benefit, finally achieve anticipateve purpose.

论文就是在GIS技术的基础上，查明勘查区自然条件及地质环境条件、滑坡基本特征及类别，在此基础上进行稳定性分析评价，分析其成灾的可能性，成灾的条件，分析论证防治的必要性和可行性，进行工程治理与搬迁避让的比较，提出工程防治方案的建议，为可行性研究提供必要的地质资料。

Mainly introduce the concept, origin, developing cause of assets securilization, developing history of securilization in the countries and areas such as U. S. A., British, Australia, Japan, Hongkong, ect. Part three, includes Chapter four, five, six, and seven. Mainly study the effect to the development of our country's economy by carrying out banking assets securitization, the actuality of banks in our country, imminency and realistic meaning to carry out assets securitization, and talk about the feasibility of take housing mortgage loan as a cut-in point and reference meaning of dealing with bad assets of banks; the design of carrying out housing mortgage loan at present moment, and the feasibility, difficulties and problem of making experiment of bad assets securitization, the study of relevant policy such as law system, revenue system, finance system, supervising principle and so on, which needs to be studied and resolved in making experiment of banking assets securitization; all kinds of risks, risks estimate and providing measures needed in.

主要研究实施资产证券化对我国经济发展的影响，主要从银行资产证券化入手，研究我国银行的现状，进行资产证券化的迫切性和现实意义，探讨了我国从住房抵押贷款作为切入点的可行性以及对处理银行不良资产的借鉴意义；现阶段我国实施住房抵押贷款证券化的方案设计，以及进行不良资产证券化试点的可行性、难点和需要解决的问题；近期我国进行银行资产证券化试点需要研究和解决的法律制度、税收制度、财会制度、监管原则等配套政策研究；资产证券化面临的各类风险、风险评价和需要采取的防范措施。

A 2. 5～5. 5 MHz transducer was used according to the acoustic depth of the heart examined. Group B was used x-ray fluoroscopy (a Philip mono-rotatable C arm X-ray equipment) as image guide with routine method reported by american college of cardiology cardiovascular technology assessment committee. TTE guiding CSC in site: The guide wire was inserted into left subclavicular vein and inferior vena cava and it was displayed clearly by TTE. The sheath could be displayed clearly too by TTE. CSC was put through the sheath into right atrium in prone position and was thoroughly showed by TTE via untypical parasternal four-chamber view.

本研究对60例心内电生理检查患者，应用TTE作为影像学引导的可行性和临床应用的方法学进行了探讨，并对5只犬TEE引导射频导管消融术时大头电极导管到位的可行性进行了动物实验研究，具体为：(1)专用冠状窦电极导管置放时TTE引导的可行研究；(2)普通电极导管置放时TTE引导的可行研究；(3)专用冠状窦电极导管和普通冠状窦电极导管置放时TTE的对比研究：(4)TTE引导His束电极导管和右室电极导管到位的临床应用研究；(5)TTE在心内电生理检查中的应用研究；(6)TEE引导射频导管消融术大头电极导管到位的实验研究。

The main contents and some most important results are as following. On the basis of experience from extensive literature survey and visiting some relevant known research institute, the volumetric method is chosen for measuring the adsorption isothermal in reservoir cores in the end, after a basic evaluation experiment using a porosimeter.

本文的主要研究内容和所获得的重要结论如下·在广泛文献调研和实地走访国内知名科研院所的基础上，结合储层介质气体吸附特点，初步选定恒体积法作为储层介质气体吸附的测试方法，并利用一台孔隙度测试仪对该方法进行了可行性研究，研究的结果进一步确定了这种方法对储层介质气体吸附测试的可行性。

To realize network interoperability is a pressing problem, but limitations and unfeasibility exist in the interoperability of telecom services between broadband heterogeneous networks while using existing techniques.

文章针对现有网络互通的现实要求，分析了现有技术手段解决电信业务在宽带异构网络间互通的局限性和非可行性，提出了一种在软交换体系下宽带异构网络间的互通模型和实现方法，并给出了采用此方法的两个互通实例，最后阐明了该方案的具体优点和现实可行性。

Methods Based on the internationally accepted de finition of QOL and the clinical characteristics of uterocervical cancer as wel l as the existing QOL scales, we designed the QOL-UCC.

对 113例宫颈癌患者用QOL UCC评估生存质量，以考察量表可信性、有效性及可行性。其中被测者信度、重测信度、分半信度、克朗巴赫系数表示量表可信性，准确关联效度、结构效度、反应度研究表示量表有效性，量表完成率及完成时间表示量表可行性。

The comparison of two practical projects is done, and the feasibility of further application of sewage source heat pump systems was discussed by calculating and diagramming.

在能量利用可行性，系统费用比较2个方面，通过公式计算和图表的形式进一步分析了应用污水源热泵系统的可行性及其发展潜力，并对太原地区推广污水源热泵系统提出了一些建议。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。