Atmospheric precipitation

Firstly, rainfall rate structure in horizontal and vertical of Typhoon Dans precipitation cloud system at 3 different times during its life period is studied based on the data from PR 2A25 data.

首先，利用PR的标准资料2A25，研究了9914号台风降水云系在三个不同时次雨强的水平和垂直结构。

The IWFs were purified by (NH4)2SO4 precipitation fractionation, and then applied to Sephadex G-75 column. The column eluates were collected separately according to A280 nm and injected into the health wheat leaves to examine the eliciting activities by PAL, PO assays.

IWF经硫酸铵粗沉淀后，将蛋白沉淀用重蒸水重新溶解后进行凝胶过滤柱层析，以280nm紫外吸收检测、收集不同的蛋白峰，分别注射到健康的Thatcher叶片中，以苯丙氨酸解氨酶(phenylalanine ammonialyase，PAL)、过氧化物酶(peroxidase，PO)防卫反应作为评价诱导活性的指标，检测活性成分在各部分中的分布和诱导活性的强弱。

Third, the phenyl aldehyde precipitation method and ion-exchange method were utilized to refine the eluent.

次之，分别采用苯甲醛沉淀法和离子交换法对L-精氨酸粗提液进行纯化精制。

It specifically analyses the construction problems of bridge deep foundation ditch excavation in the section of earthquake liquefied soft soil area,puts forward the programs of vacuum light well precipitation, steel tube pile fender and the composition of them to solve the damages of sand-blast boil and landslide that easily happened in the construction.

详细分析了地震液化带软土地区桥梁深基坑开挖的施工问题，提出了真空轻型井点降水、钢管桩围堰和两者相结合的方案来解决施工过程中可能出现的喷砂冒水和滑坡等灾害，试验结果表明，用该方法进行深基坑开挖支护是十分有效的。

The research contents consist of three parts:(1) Method of biological acid precipitation of lignin from alkaline pulp black liquor (2) Making organic fertilizer with technical lignin and natural lignin.

用工业木质素和天然木质素制备有机缓释肥料。

The products have excellent mechanical properties and no precipitation, no fisheyes, and lasting and stable conductivity, They can be widely applied in preparing conducting PO injection products, sheet products and blow-molded products.

本产品采用超导电炭黑、树脂以及加工助剂精制而成，外观为黑色颗粒状，产品性能优异，不掉粉，无晶点，具有永久而稳定的导电性能，适用于制备导电聚稀烃注塑制品、片材制品以及吹膜制品。

Four typical grassland communities, Stipa klemenzii, Stipa grandis, Leymus chinensis and Leymus chinensis + forbs, had been chosen along precipitation gradients from 200, 290, 350 to 450 mm respectively in Inner Mongolia Steppe. The objectives of this study were to determine the effects of grazing on plant community composition, aboveground and belowground biomass, species and functional group diversities and the relationship between diversity and productivity, the effects of grazing on soil seed bank species composition, seed density and diversity along the transect.

选取内蒙古草原三种主要草原类型(草甸草原、典型草原和荒漠草原)代表性群落羊草杂类草群落、羊草群落和大针茅群落、小针茅群落，应用样线法沿水分梯度研究放牧对内蒙古草原不同植物群落功能群组成、多样性、生产力以及多样性与生产力关系的影响和放牧对土壤种子库组成、大小以及多样性的影响，在此基础上，研究土壤种子库与地上植被间的关系。

Oxygen is the most important unintentional doped impurity in CZ silicon, thus its related oxygen precipitation and internal gettering technique have long been the subjects of research interests.

氧是直拉硅单晶中最重要的非故意掺入杂质，与氧相关的氧沉淀及内吸杂技术的研究一直是硅材料研究的重要课题。

Keywords Heavily As- doped silicon , Oxygen precipitation, Defects, Intrinsic gettering

重掺砷硅单晶；氧沉淀；缺陷；内吸除

The results show that the crystal grain of nanometer ZrO2 loading CuO and ZnO which are prepared by fractional precipitation method are less than 20 nm as a shape of sphericity or ellipsoidal, and the nanometer ZnO/ZrO2 grain glomerates intensively.

结果表明，分步沉淀法制得的担载CuO和ZnO的ZrO2基纳米粉体的晶粒小于20mm，形貌多为球形或椭球形状，其中ZnO／ZrO2纳米粉体晶粒间有较大的团聚现象。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。