Atmospheric precipitation

METHOD:SOD was purified from the shark liver by 72℃ heat treatment,following precipitation with ammonium sulfate and Sephadex G-100 column chromatography.

方 法：采用72℃热处理，硫酸铵分级分离和Sephadex G-100柱层析工艺。

At that time, evaporation was less than precipitation, and the Maar Lake was in its deep-water time. Consequently, the land area around the lake decreased due to the relative cold temperature, leading to the low productivity of vegetation and the low content of organic matter in the core.

此时双池玛珥湖处於深水期，由於气温降低以及湖水上升引起的湖边陡壁植被覆盖面积减少，植物生产力降低，导致了岩芯中有机质的低含量。

The changes of root and photosynthetic physiological characteristics under soil drought stress of two genotypic maizes at seedling were studied with a pot experiment with a rain shelter to keep off precipitation.

以玉米品种&白单9&和&白单31&为试材在防雨棚内进行盆栽试验，研究中度干旱胁迫下玉米苗期根系的生长特征、光合作用日变化特征和光响应特征的变化。

Nano manganese oxide was prepared by the liquid phase precipitation method ,and characterized by XRD and TEM.

采用液相沉淀法制备了纳米氧化锰，通过色谱分析其脱硫效率，并通过X射线衍射和透射电镜对粉末样品的组成、结构、粒径和形貌进行了表征。

In precision alloy (soft, including Nd-Fe-B rare earth permanent magnet materials, including, expansion, flexibility, hot bi-metals, electric resistance), high temperature alloy and stainless steel (Ni-Cr system, precipitation-hardening grades, grade maraging ) materials and products in research, development, trial and production areas such as the domestic advanced level, some products up to international standards.

在精密合金（软磁、包括钕铁硼及稀土材料在内的永磁、膨胀、弹性、热双金属、电阻电热）、高温合金和不锈钢（镍铬系、沉淀硬化系、马氏体时效系）材料及制品的研究、开发、试制和生产等方面居国内先进水平，部分产品达到国际水平。

Coli, and purify rWHcAg under native condition by precipitation with saturated ammonium sulfate and CsCl gradient centrifugation; Immunize Balb/c mice with purified rWHcAg to prepare antiserum; Establish a competitive inhibition ELISA method to detect WHcAb in serum of Chinese marmots.

原核表达重组WHcAg，氯化铯密度梯度离心获得非变性的纯化蛋白；用该纯化蛋白免疫Balb/c小鼠制备多克隆抗体；建立竞争抑制ELISA方法用于检测旱獭血清中的抗－WHc。

The molecularly imprinted polymeric microspheres for L -methyldopa were synthesized by precipitation polymerization.

采用沉淀聚合法合成了左旋甲基多巴( L -Methyldopa， LMD)分子印迹聚合物微球，并对其合成条件进行了详细研究。

In this work, nanostructure samples of La1-xCaxMnO3（x=0.2、0.3、0.4、0.5）were prepared by hydrothermal-precipitation method . The structural characterization of the powder samples were done by X-ray diffraction. XRD patterns showed that all the samples ate single perovskite-type phase withoutother impurity or secondary phase. The shape and size of samples were performed on Scanning Electron Microscopy. SEM photographs investigated that temperature of hydrothermal effects the phase of samples and alkalinity of the reaction mixture by ΔTad-T curve measurement device at low magnetic fielded

本论文采用水热共沉淀退火法制备了La1-xCaxMnO3（x=0.2、0.3、0.4、0.5）系纳米结构，用X射线衍射仪确定产物为单相钙钛矿结构，无任何杂峰及第二相；用扫描电子显微镜与透射电子显微镜分析了产物的大小和形貌，发现水热温度对产物的形成起决定作用，随着温度的升高，产物由薄膜状向丝状转变，而溶液的碱度可控制产物的形貌和大小，当碱度为6.35mol/L，水热温度为240 C时，La0.6Ca0.4MnO3的主要形貌为纳米丝并有少量纳米颗粒，纳米丝平均直径为40nm；最后测量了粉末样品在低磁场（1.4T）下的磁热效应，发现水热共沉淀退火法制备样品的最大绝热温度明显高于球磨法制备样品的最大绝热温变。

The core issue is how to construct a reasonable physical, chemical and microbial condition for early rapid precipitation and filling of molar tooth cracks in the subtidal shallow marine.

在综述臼齿碳酸盐岩成因研究历程和国内外最新研究成果的基础上，总结评述了6种主要的臼齿构造成因模式，其核心问题是在元古代正常潮下浅海环境中构建成岩作用早期臼齿构造裂缝形成及等粒微亮晶方解石快速沉淀充填的物理、化学及微生物条件。

The decrease of precipitation has the problem of wetland loses and xerophytes invasion even worse.

因为连年降雨的减少导致了北京市湿地面积的下降和旱生植物的入侵问题日益加重。

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。