预方案

Comparing the synchronous rectifier to normal circuit by calculating the efficiency indicates that forestay is much better on efficiency and thermal performance. A simple circuit with good consistency, high efficiency, high reliability and low cost is presented in this paper. The feasibility is proved by emulating with computer.

通过分析已有的集中解决隔离型变换器输出带预偏置电压启动的解决方案，提出了一种全新的一致性好、成本低、效率高、简单和可靠性高的解决隔离变换器输出有预偏置电压的启动问题的电路，通过仿真验证了其可行性。

Combined the extended structure and the simple memory predistorter model can realize the linearization of the amplifier with memory.

仿真结果表明，利用所提出的预失真方案能快速实现记忆放大器的预失真，而且显著提高了线性化性能。

The results show that the test method is feasible and convenient on restriction of experimental conditions.

以镇胜公路平寨特大桥挂篮荷载试验为例，论述了采用等代千斤顶荷载进行挂篮预压试验的方案确定和结果分析，试验表明由于受试验条件限制采用此方法进行挂篮预压试验是方便可行的。

Compared with the Epoxy resorcinol-formaldehyde resin pretreatment system and Maleic anhydride pretreatment system developed by Xusigui, the 40% carbolated styrene-butadiene latex system can keep the composite"s properties and reduce the cost of pretreatment and simplify the pretreatment technology; especially to the HST 2073 latex system, the composite"s mechanics properties are improved greatly. Secondly, the composite"s comprehensive properties and interface performance are improved by reinforced with short fiber grafted with rubber in the surface. Thirdly, to simplify the production technology of composite, we add TKM-M and RF-90 as adhesive agent to the composite blended in an internal mixer, so as to the composite can be used to industry widely, then the effect of the amount adhesive agent on the composite"s properties and interface adhesive performance was studied, from the experiments the optimum amount of adhesive agent was deduced.

其中采用特软羧基丁苯胶乳预处理短纤维的方案，降低了预处理成本，相对许泗贵的低分子环氧和马来酸酐体系来说，预处理工艺大大简化了，而材料的力学性能保持良好，尤其是 HST 2073A 胶乳预处理体系，力学性能有较大幅度的提高；第二，通过对尼龙短纤维表面进行接枝橡胶分子链预处理，改善了复合材料的界面粘合性能，复合材料的综合性能也得到了相应的提高；第三，为了简化复合材料的生产工艺，使复合材料的应用得到工业化推广，我们选用TKM—M和RF—90长效增粘剂，直接加入短纤维橡胶复合材料中，采用密炼工艺，探讨了增粘剂的用量对复合材料界面粘合以及性能的影响，得出了增粘剂在复合材料中的最佳用量。

To further enhance the security and connectivity for wireless sensor networks,proposed an improved key management scheme.introduced the scheme,a random key predistribution using multiple key spaces and multipath key reinforcement was based on group-based deployment model which in the paper of du wen-liang.analysis and simulations show that the scheme has lower memory and communication overheads, better ability against attacks besides good security performance.

为了进一步提高无线传感器网络的安全连通性，在分析du wen-liang等人的group-based节点投放模型的基础上，提出了一种改进的密钥管理方案：多密钥空间与多路径增强相结合的随机密钥预分配方案。结果分析表明，该方案需要较少的内存存储空间，不仅提高了系统的连通性，还降低了节点的被捕获概率。

This scheme selects the minimal span set of all predistributed keys by running the adaptive key selection algorithm. It can maintain the security of the network and improve the connectivity among sensors simultaneously and integrate with the existed key predistribution schemes very easily.

该方案通过运行自适应****选择算法生成部署集中所有预分配****的最小生成集，从而在维持较高安全性的同时极大地提高了传感器节点之间的连通概率，并且能很容易地与现有的****预分配方案相结合。

It introduces the target and aim of prestressing test,elaborates prestressing crafts of large bridge building machine,brings forward how to simulate prestressing pile on large bridge building machine in big bulk,so as to ensure the safety of construction and feasibility of the plan under inspection state.

介绍了预压试验的对象及其目的，简要叙述了造桥机在施工中的预压工艺，提出了如何在造桥机上进行大吨位预应力箱梁模拟预压的方法，从而保证检验施工状态下造桥机的施工安全及方案的可行性。

The similarity degree is defined by utilizing similarity relations; the dominated index and the dominating index of each alternative are calculated respectively, the two complete preorders of alternatives are worked out; the two complete preorders are then combined into a final partial order of alternatives.

该方法运用相似关系确定出相似度，建立了最大控制指标和最小被控制指标模型。通过模型的计算，得出方案集的两个全预序排列，然后将这两个全预序排列合并成方案集的最后排序。

B:Oocytes and early embryos were permeated in 0.5%Triton X-100 for 10 minutes,then fixed in 4% paraformaldehyde/PBS.Method C:Oocytes and early embryos were fixed in 1%PFA while permeated in 0.2%Triton X-100 at the same time for 1 hour.Method D: Oocytes and early embryos were fixed in precooled methanol(-20℃) for 15 min,then permeated in 0.5%Triton X-100 for 10 minutes.

方案A：先用4%多聚甲醛固定1h，再用0.5%Triton X-100穿透10min；方案B：先用0.5%Triton X-100穿透10min，再用4%PFA固定1h；方案C：用1%PFA+0.2%Triton X-100同时固定与穿透1h；方案D：用-20℃预冷甲醇固定15min，再用0.5%Triton X-100孵育10min。

Develop thorough screening programmes to identify the "provincial project quality inspection teams working procedures"; Adjust steel detector, a few concrete Hin resilient devices, infrared ranger, concrete thickness detector, and more than 10 types of screening equipment, equipment; Equipped with cameras, video cameras and other evidentiary materials; requirements for the preparation of inspection units related materials "examined units and personnel original list" for the registration of imported works of the "Project Profile Form" for the inspection of the quality of acts related units "quality checklist" for the inspection of engineering information "Engineering Quality Inspection Records Form" for the inspection of the quality of engineering entities "Housing construction quality inspection log," and "decorative decoration quality inspection log","roads, bridges project quality inspection log," for inspection Liang, panels, pillars location and diameter steel "reinforcement location checklist" for the inspection of the concrete strength "concrete strength resilience testing Form" inspection works for the detection test units "laboratory quality checklist," and "laboratory examination of records in table","quality laboratory testing checklist" for the inspection of ready-mix concrete production enterprise "ready-mix concrete plant quality checklist","ready-mix concrete plant quality inspection records acts table","ready-mix concrete plant quality control inspection log","ready-mix concrete plant product quality inspection and Registration Form" for the examination of relevant personnel to mandatory standards of the "construction standards mandatory testing of the questionnaire table," for statistical findings of the "quality inspection Tables","Engineering Quality Inspection results summary","project quality inspection results tables","Punishment of project quality inspection list","quality check" and the "existence of major problems tables construction standards mandatory testing of the questionnaire tables."

制定周密的检查方案，确定《省工程质量检查组工作程序》；调校钢筋测定仪、混凝土数显回弹仪、红外线测距仪、混凝土板厚测定仪等十余种检查仪器、设备；配备照相机、摄像机等取证器材；编制用于要求受检单位提供有关材料的《受检单位及人员提供原件清单》，用于登记受检工程有关情况的《工程项目概况表》，用于检查相关单位质量行为的《工程质量检查表》，用于检查工程技术资料的《工程质量检查记录表》，用于检查工程实体质量的《房屋建筑工程质量检查记录表》、《装饰装修工程质量检查记录表》、《道路、桥梁工程质量检查记录表》，用于检查梁、板、柱钢筋位置和直径的《钢筋位置检查表》，用于检查混凝土强度的《混凝土强度回弹检测表》，用于检查工程检测试验单位的《试验室工作质量检查表》、《试验室检查记录表》、《试验室检测质量检查表》，用于检查预拌混凝土生产企业的《预拌混凝土厂工作质量检查表》、《预拌混凝土厂质量行为检查记录表》、《预拌混凝土厂质量管理检查记录表》、《预拌混凝土厂产品质量检查登记表》，用于考核相关人员掌握强制性标准情况的《工程建设标准强制性条文问卷考核情况表》，用于统计检查结果的《工程质量检查情况统计表》、《工程质量检查结果汇总表》、《工程质量检查结果统计表》、《工程质量检查处罚情况一览表》、《工程质量检查存在主要问题统计表》和《工程建设标准强制性条文问卷考核情况统计表》。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。