precipitation method

Effects of Reaction Conditions on the Particle Size of Yttrium Chloride Oxide Prepared by Precipitation Method of NH_4HCO_3

碳酸氢铵沉淀法制备氧化钇粉体时反应条件对产物粒度的影响

An Application of Composite Index Method to Precipitation Categorical Forecast

综合指标方法在降水分级预报中的应用

Abstract In this paper nano TiO 2 powder was prepared from industrial primary products& titaniferous solution by homogeneous precipitation method.

本文以工业钛白粉生产的中间产物&钛液为原料，采用均匀沉淀法制备纳米级TiO2微粉。

The results are as follows: ( 1) Classification process of industrial lignin used the improved acid precipitation method were influenced by the acid type, alkali concentration, temperature, classification pH and rotation speed.

研究结果如下：（1）改进的酸析沉淀法分级纯化工业木质素的过程中受酸的种类、碱液浓度、酸析温度、分级pH、离心转速多因素共同作用。

Effects of Charging Method in the Precipitation Process on Iron-based Catalysts for High Temperature Shift Reaction

中和沉淀过程中加料方法对新型铁基CO高变催化剂性能影响的研究

Hydrated silicic acid from natural grammite were produced by precipitation method.

用天然硅灰石为原料，沉淀法生产水合硅酸。

This paper describes the conditions of preparing AgI& Ag_2S mixed crystal iodide ion-selective electrode of compacting membrane type by co precipitation method, measures its characteristics, examines the effect of varying pressure on properties.

本文叙述了用共沉淀法制备AgI&Ag2S混晶压片膜碘离子选择电极的条件，并测试了电极的各项性能。同时，考察了不同压片压力对电极性能的影响。

Using barium hydroxide octahydrate and urea as raw material, barium carbonate is prepared homogeneous precipitation method.

以八水氢氧化钡和尿素为原料, 采用均相沉淀法制备了碳酸钡粉体.

With the action of some bivalent cation, high temperature shift catalyst has been prepared by mixture precipitation method using open-hearth dust as a raw material.

利用钢铁厂平炉尘制备中温变换催化剂，制备成本低，工艺简单，活性达到部颁标准，具有明显的经济效益。

The scale removing efficiency of the new self-made detergent QX was studied by precipitation method and contrasted with those of several kinds of detergents available on market.

采用沉淀重量法，对几种市售除垢剂与自制新型除垢剂QX进行了除垢效果对比实验。

Preparation of CNTs/ ZnO composites by homogenous precipitation method

均匀沉淀法制备碳纳米管/氧化锌复合材料的研究

Using barium hydroxide octahydrate and urea as raw material, barium carbonate is prepared by homogeneous precipitation method.

以工业氯化镁和硫氢化钡为原料，采用复分解法合成高纯氢氧化镁。

METHOD: The inclusion compound of DFS? � �? CD was prepared by the co ? precipitation method.

方法: 采用共沉淀法制备双氯芬酸钠? β? 环糊精包合物.

Preparation of Nanometre α-Al_2O_3 Powders by Adding Aluminium Particles Through Precipitation Method

利用纳米铝和沉淀法制备纳米α-Al2O3粉体

Study of Natural Precipitation Method and Impacting Method for Measurement of Bacterial Count in Air

撞击法和自然沉降法监测室内空气细菌总数捕获效果的研究

Based on the series climate data of 97 meteorological stations in the Yellow River Basin from 1960 to 2000 compiled by the China Meteorological Administration, the spatial and temporal structure of precipitation in the Yellow River Basin was analyzed, by using Kriging method.

采用国家气象局整编的1960-2000年黄河流域97个气象站点的系列资料和Kriging插值方法，对黄河流域降水时空结构及其变化特征进行了分析。

The optimal conditions of direct precipitation processes, coupling route of hydrolyzation of metal alcoholate with homogeneous precipitation and solid state reaction method were obtained by orthonormal experiments.

通过正交实验确定了直接沉淀法、金属醇盐水解和均匀沉淀耦合法和固相法的较佳工艺条件。

Ascites were purified by caprylic acid ammonium sulfate precipitation method.

采用辛酸／硫酸铵法纯化腹水。

The stress-relaxation method is used to monitor the strain-induced precipitation curves with thermo-simulation machine in Nb and Nb-Ti microalloyed steel. Meanwhile, the strain-induced precipitation process is also obtained with the aid of carbon replica technique under the TEM observation.

利用应力弛豫法在热模拟机上分别测定了Nb钢及Nb-Ti微合金钢的应变诱导析出曲线，并采用萃取复型技术在电镜下直接观察了应变诱导析出过程。

Research on crystal control of barium carbonate by homogeneous precipitation method

均相沉淀法制备不同晶形碳酸钡的研究

Nano-sized CeO2 powders were synthesized by homogeneous precipitation method in four alcohol-water solutions with HMT as precipitator.

在四种醇水体系中，以HMT为缓释沉淀剂制备了纳米CeO2粉体。

Based on the precipitation data of 21 representative stations during the period from 1961 to 2000, used percentile threshold method to analyze the trends of minimum temperature, maximum temperature, extreme precipitation and extreme climate changes in each subarea.

本文选取了西北干旱区21个代表站点1961-2000年逐日气温和逐日降水量资料。用百分位阈值法分析极端年最低温度、年最高温度和极端降水量变化特征及其各分区极端气候变化趋势。

This work mainly focuses on: ( 1) A series of phosphate catalysts have been prepared by precipitation method and sol-gel method respectively. The effects of preparing method, materials, conditions of drying and calcination on the properties of the catalysts have been investigated.

本研究主要包括以下内容：（1）分别以沉淀法和溶胶-凝胶法制备磷酸盐系列催化剂，考察了制备方法、原料、干燥、煅烧等条件对催化剂性能的影响。

Research on preparation of molybdenum disulfide nanoparticles by homogeneous precipitation method

均匀沉淀法制备纳米二硫化钼粉末的研究

Surface coating of potassium titanate whiskers by a novel homogenous precipitation method

一种无机包覆钛酸钾晶须的新方法

For chemical co-precipitation method, tetraethylenepentamine was used as precipitant for the first time to synthesize pure phase YAG powders.

对于化学共沉淀法，首次采用四乙烯五胺作为沉淀剂合成出纯相的YAG粉体。

Methods Using gellan gum, a cation-sensitive gel forming excipient, huperzine A ( Hup A) nasal in situ gel was prepared by pH gradient precipitation method.

方法用阳离子敏感性成胶辅料结冷胶，采用pH梯度沉淀法制备了石杉碱甲鼻用原位凝胶。

Two major β-glucan binding proteins(β-GBPs), 75 9 ku and 83 2 ku, were extracted from the hemolymph of Plutella xylostella larvae by using β-1, 3-glucan affinity precipitation method. The proteins were present in plasma but absent in haemocytes.

用亲和沉淀法从小菜蛾（Plutella xylostella）幼虫血淋巴中分离获得2种β1,3葡聚糖结合蛋白，分子质量分别为759ku和832ku，主要存在于幼虫血浆中，但血细胞中未检出。

Physical demulsification method includes gravity precipitation method, centrifugalization method, electric demulsification method, wetting coalescence demulsification of emulsion membrane method and grinding demulsification method.

物理破乳法主要有重力法、离心法、电学破乳法、膜润湿聚结法和研磨破乳法；

This paper analyzes the annual precipitation and the rainy days distribution characteristic and their change rule during 1961~ 2004 in the various stations of Hainan Island by using tendency analytic method, gathered methods and so on.

应用趋势分析法和聚类分析法等方法分析了海南岛全岛各站点1961~2004年雨量和雨日分布特征及其变化规律。