查询词典 carbonate-apatite

The reaction system of synthesizing propylene carbonate from urea and 1,2-propylene glycol has been analyzed thermodynamically.

对尿素与1，2-丙二醇合成碳酸丙烯酯反应体系进行了热力学分析。

The chemical composition, crystal morphology, fluid inclusions and thermoluminescent characteristics of non-metallic mineral s such as quartz and carbonate from the Jindoushan gold deposit were studied in detail.

对产于烟台金斗山金矿内的贯通性非金属矿物石英及碳酸盐类的化学成分、晶体习性、流体包裹体和天然热发光特征做了研究，结果表明，矿床的主成矿阶段的环境介质为酸性偏中性，富矿和贫矿石英的热发光曲线均为双峰型，但峰点温度、总积分强度有显著差异。

High concentration white masterbatch is prepared by using different titanium dioxide, PE wax and adding nanocalcium carbonate etc. to change the formulation of masterbatch in this paper. Hiding power, tinctorial power and dispersion performance were tested by color measure instrument and IBAS, and process performance, rheology were tested by Brabender torsion rheometer and INSTRON rheometer.

本文采用不同的钛白粉、聚乙烯蜡及添加纳米碳酸钙等助剂的方法改变浓色母粒的配方，加工制备浓白色母粒，通过测色仪、图像分析仪测试母粒的着色力、遮盖力和分散性能，通过转矩流变仪和INSTRON流变仪研究了母粒的加工性能和静态流变性能。

The result showed that, rutile TiO2 was well consistent with carrier resin, so the prepared masterbatch had glabrous of surface, and application was better than acute TiO2; the masterbatch was prepared by using polymerization PE wax, whose application is better than masterbatch prepared by using other PE wax, such as hiding power of the film, whiteness of the templet; dispersion of TiO2 was uniformity, and application was improved, in particular hiding power and tinctorial power by adding PPA and nanocalcium carbonate in masterbatch.

结果表明，浓PE白色母粒的加工制备，样品中金红石型钛白粉与载体树脂相容性较好，载体树脂仍能形成连续相，制备出表面光洁的色母粒，且应用性能较优于锐钛型钛白粉；聚合型聚乙烯蜡制备的浓白色母粒，薄膜透过率较低，光密值较大，母粒的遮盖力强，注塑样板的白度高，母粒的着色力强，应用性能优于其它聚乙烯蜡；浓白色母粒中加入PPA和纳米碳酸钙，使钛白粉粒子的分散均匀，提高了母粒的着色力、遮盖力等应用性能。

It is found that the concentration of nitric acid has great effect on reclaiming rate of lead in the processing of nitric acid leaching-lead deposition after investigating the preparation of tribasic lead sulphate from bismuth waste residue by ammonium hydrogen carbonate transformation method.

通过对铋冶炼浸渣采用碳酸氢铵转化法合成三碱式硫酸铅的工艺研究，得出在硝酸浸出—硫酸沉铅工艺过程中影响铅回收率的主要因素为硝酸质量浓度。

The processing principle for the preparation of tribasic lead sulphate from bismuth hydrometallurgy waste residue by ammonium hydrogen carbonate transformation-nitric acid leaching-lead deposition with sulphuric acid-sodium hydroxide synthesis is introduced.

介绍了铋冶炼浸渣采用碳酸氢铵转化—硝酸浸出—硫酸沉铅—氢氧化钠反应合成三碱式硫酸铅的工艺原理。

ABSTRACT: ObjectiveThe physicochemical properties and hydrating product of α tricalcium phosphate cement modified by strontium carbonate was investigated.

目的 探讨用碳酸锶对α磷酸钙骨水门汀系统进行改性后的理化性能和水化产物分析。

The invention relates to a pipeline polyurea outer anticorrosive coating and the making method thereof, making heated prepolymerization reaction on dibenzo-methane diisocyanate, carbodiimide diisocyanate, polyether binary alcohol and polyether trihydric alcohol to prepare prepolymer solution A, and making end amino polyethylene oxide ether, dimethyl sulfur-based toluene diamine, diethyl diamine, iso-propyl titanate solution, polyacrylate, carbon black, titanium dioxide and lightweight calcium carbonate into solution B, and as using, respectively heating the solutions A and B to 65 deg.C and then mixing them, then quickly spraying and curing to form a coat.

本发明涉及一种管道用聚脲外防腐涂料及制造方法，由二苯基甲烷二异氰酸酯、碳化二亚胺化二异氰酸酯、聚醚二元醇和聚醚三元醇通过加热预聚反应制成预聚物的A液、由端氨基聚氧化乙烯醚、二甲硫基甲苯二胺、二乙基甲苯二胺、钛酸异丙酯溶液、聚丙烯酸酯溶液、碳黑、钛白粉和轻质碳酸钙配制而成的B液组成，使用时将A液和B液分别加热至65℃后混合，然后快速喷涂固化形成涂层。

The secondary pores of the sandstones were formed by the dissolution of the aluminosilicate, tuffaceous interstitial material and carbonate minerals effect by the carbonic acid and organic acid produced in late diagenesis stage. Hydrocarbon emplacement and tectonic thermal event act a positive role in the preservation of the primary pore and the formation of the secondary pores.

砂岩次生孔隙主要是成岩晚期阶段的碳酸以及有机酸对长石等硅酸盐矿物、凝灰质填隙物以及碳酸盐矿物的溶蚀造成的，油气侵位及构造热事件对原生孔隙的保存及次生孔隙的形成起到了积极作用。

Assuming that variations of the marine 13C/12C ratio are directly recorded in carbonate rocks, thousands of carbon isotope analyses of late Precambrian examples have been published to correlate these otherwise undatable strata and to document perturbations to the carbon cycle just before the great expansion of metazoan life.

新元古代较低的13C/12C比值被认为是前寒武纪特有的变化，这些变化包括所有有机质在海洋中的完全氧化以及生物产率的下降导致的热液二氧化碳的输入。通常热液中的二氧化碳被认为拥有较低的13C/12C比值。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。