Atmospheric precipitation

Y-TZP nanoceramics were prepared by means of sintering after their cold-press formation of the Y-TZP nanopowders prepared with co-precipitation method.

采用沉淀法制备的Y-TZP纳米粉体经冷压成型后烧结成Y-TZP纳米陶瓷。

In this project, the selection criteria of matrix and reinforcement for obtaining composites with high strength and toughness are determined. The as-cast and aged microstructures of composites reinforced with particles of different strength are observed, and their metallurgical conditions and stabilization mechanisms are analyzed. The aging precipitation behaviors and mechanisms are studied. Some characteristics of nano-materials (micro-distortion areas) are found in 150nm- Al2O3p/Al composites and their formation mechanisms are expatiated. The "flexible" restriction to the deformation of the matrix by low strength AlN particle is observed by in-situ TEM and SEM techniques, and the mechanisms of its resist on cracks propagation and its contribution to composite strength are revealed. The high temperature deformation behaviors of Al2O3p/Al composites are studied. A rare-earth coating is established on sub-micron Al2O3 particles, leading to an improvement in wettability between coated Al2O3 and liquid aluminum and a decrease in infiltration pressure. The strength and ductility of coated particles reinforced composite are also increased. The interfacial characteristics, bonding structures and their formation mechanisms are studied, and the crystal orientation relationships between reinforcement particles and aluminum matrix are investigated. Finally a lighter composite with better balance of strength and damping properties is reinforced with hollow ceramic microballoons of ultra-lower strength.

本项目发现了获得高强度和高韧性复合材料的基体、增强体选择依据；观察了各种强度质点增强复合材料的铸态和时效态微观组织，分析其微观结构形成的金属学条件及稳定性机理，研究了其时效析出规律和时效机制，发现了150nmAl2O3颗粒增强铝基复合材料基体中的纳米材料特征，并解释了其形成机理；利用TEM和SEM动态拉伸技术发现了低强度质点AlN颗粒对变形协调的&柔性强化&机制，揭示了其对裂纹扩展的阻碍作用和对复合材料高强度的贡献；研究了中强度质点的Al2O3颗粒增强铝基复合材料的高温变形行为，并对其进行了稀土界面层设计与制备，改善了颗粒与铝合金之间的界面润湿性，降低了复合材料铸造渗透压力，提高了复合材料的强、韧性；研究了多种复合材料界面结构及形成机理，确定了增强体与基体之间的界面结合机制，分析了复合材料界面处的晶体学位向关系；最后制备了含微孔的中空型陶瓷颗粒增强的特种复合材料，得到了强度和阻尼综合性能较好的轻质复合材料。

Compared with single dimension immersion, the precipitation of chloride ions in the concrete surface layer under three dimensions immersion was higher.

相对于一维浸泡方式，三维浸泡的混凝土表层沉积的氯离子有一定程度的提高。

Hydrogen peroxide as oxidizer and sodium carbonate as remover, arsenic, iron, nickel, calciumand lead are removed from copper-bearing mixture by neutralization and precipitation, then use the liquor thathave been filtrated react with the sodium carbonate to produce basic copper carbonae and make the quality of theproduct meet the export request.

采用氧化和中和沉淀方法，以H_2O_2作氧化剂、Na_2CO_3作脱杂剂脱除含铜混合液中的As、Fe、Ni、Ca、Pb等杂质，利用其与碳酸钠反应生产减式碳酸铜，并使产品质量达到出口要求。

Gold came from the mantle and/or from remelted crust, while large, deep-cut faults and passageways of the remelted magmas provided possibility of transportation of the hydrothermal fluids, and brittle, brittle-ductile overlapped faults developped at the moderate-shallow levels of the mantle plumes, and related decollements, provided ideal sites for the precipitation of hydrothermai fluids.

金主要来自地幔及重熔地壳，深大断裂及重熔岩浆通道为成矿热液的迁移提供了有利条件，中浅层次的幔枝隆起及外围滑脱带中的脆性、韧—脆性叠加断裂为矿液提供了沉淀场所。

It is on the theoretical analysis and/or test research of the model input such as the precipitation predication, the metabolic equation of groundwater and the critical depth of water table on groundwater evaporation.

其中包括模型输入项大气降水量的预报、地下水代谢方程的推导以及潜水蒸发极限埋深的实验研究等。

And precipitation rate of vanadium was higher than 98.5%. Five vanadium catalysts were made withγ-Al_2O_3 and the mesoporous molecular sieve MCM-41 as carrier, and were made by dipping method, intermingle process and functionalizing method respectively. The characterization of their pore size, crystal structure, specific surface area and V_2O_5 load of catalysts were studied by XRD, the adsorption /desorption of N_2 technique, Raman spectroscopy and XRF. The activities of the catalysts estimated by the synthesis of DPC with DMC and phenol.

钒催化剂的制备与表征及活性评价：是分别以γ-Al_2O_3和介孔分子筛为载体，采用浸渍法，掺杂法及官能化法制备了5种钒催化剂；分别对其进行了XRD分析、N_2吸附-脱附分析、红外光谱分析和荧光分析，对其孔径、晶型结构、比表面积和V_2O_5负载量进行了表征；以碳酸二甲酯和苯酚的酯交换合成碳酸二苯酯的典型反应为依据，对钒催化剂进行了活性评价。

The annual total water resources storage in the controlled main drainage canal is about 110 mm, which is about 13% of the annual precipitation.

以大沟控制蓄水进行农田水资源调控这一技术模式，是适合淮北平原区特点的解决水资源短缺和改善农田生态环境、调控区域水资源时空合理分布的有效途径。

And also introduce the basic theory of dewatering of confined water and the processing method of the gutter drainage and well point precipitation.

本文中介绍了承压水降水的基本理论和明沟排水与井点降水等处理方法，以及各种方法的优缺点和适用条件。

Lake pigment: A pigment made by precipitation of a soluble dye on an inorganic base to render it insoluble in water.

色淀颜料：可溶性染料在无机碱中沉淀而生的颜料，它不溶于水。

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。