查询词典 titanium oxide

"Its compounds, in which it has valence 2, 3, or 4, include titanium trichloride (used as a catalyst in polypropylene production), titanium dioxide (extensively used as a pigment -with the greatest hiding power of all white pigment s-in paints, enamels, and lacquers), and titanium tetrachloride (used in skywriting, smoke screens, and as a catalyst)."

钛的化合物(其中钛的原子价为2、3或4)包括三氯化钛(在聚丙烯生产中作催化剂)、二氧化钛(在油漆、釉药和漆器中广泛用作颜料，在所有白色颜料中掩盖能力最强)以及四氯化钛(用于空中显示图形文字、烟幕以及催化剂)。

"Its compounds, in which it has valence 2, 3, or 4, include titanium trichloride (used as a catalyst in polypropylene production), titanium dioxide (extensively used as a pigment-with the greatest hiding power of all white pigments-in paints, enamel s, and lacquers), and titanium tetrachloride (used in skywriting, smoke screens, and as a catalyst)."

钛的化合物(其中钛的原子价为2、3或4)包括三氯化钛(在聚丙烯生产中作催化剂)、二氧化钛(在油漆、釉药和漆器中广泛用作颜料，在所有白色颜料中掩盖能力最强)以及四氯化钛(用于空中显示图形文字、烟幕以及催化剂)。

"Its compounds, in which it has valence 2, 3, or 4, include titanium trichloride (used as a catalyst in polypropylene production), titanium dioxide (extensively used as a pigment-with the greatest hiding power of all white pigments-in paints, enamels, and lacquers), and titanium tetrachloride (used in skywriting, smoke screens, and as a catalyst )."

钛的化合物(其中钛的原子价为2、3或4)包括三氯化钛(在聚丙烯生产中作催化剂)、二氧化钛(在油漆、釉药和漆器中广泛用作颜料，在所有白色颜料中掩盖能力最强)以及四氯化钛(用于空中显示图形文字、烟幕以及催化剂)。

Such as the United States of the R960 with only 80 percent of titanium, its effect is the other most of titanium white, I technology companies high-tech sector is also the basis of this principle for further study and the various special type titanium white, to improve quality, reduce Cost.

如美国的R960含钛量只有80%多，它的效果是其它钛白粉之最，我公司技术部门也是根据这个高科技原理为用户进行研究的各种专用型钛白粉，做到提高质量，降低成本。

objective:to evaluate the clinical effectiveness of titanium plate osteosynthesis in maxillofacial fractures.methods:216 maxillofacial fractures in 157 cases from 1998 to 2005 were treated with titanium microplate or miniplate osteosynthesis,122 of which were mandibular fractures and 94 of maxillary fractures.43 cases of maxillofacial fractures including cranial injuries in 157 cases and 38 cases including zygoma and zygomatic arch fractures and 13 cases including other injuries.results:most of the cases were healed.only 9 cases had complications.conclusion:the titanium plate osteosynthesis would bring about good effects.it would reduce facial malformation and regain normal occlusion after operations.

目的：对应用钛板作骨内坚固内固定的效果进行临床评价。方法：自1998年－2005年收治157 例共计216处颌骨骨折进行微型钛板或小型钛板作骨内坚固内固定术。其中下颌骨骨折122处；上颌骨骨折94处。157 例颌骨骨折合并颅脑损伤43 例，伴有颧骨弓骨折38 例，伴有其他外伤13 例。结果：多数病例能达到一期愈合，仅9 例伴有并发症。结论：钛板内固定具有良好的效果，术后面颌畸形得以改善，咬合功能恢复。

The authers fetched the embryo calvarial peristeum tissue, got human osteoblast by enzyme-assimilating methods and tissue-block culture methods. We observed the morphological change, growth feature and osteogentic capability, of osteoblast during culture in vitro with phase contrast invert microscope, drew the growth curre and identified the cells by alkaline phosphatase dye. At same time, the morphology and bioactivity of 3-5th-generation osbeoblast and anabiotic cells was studied comparatively. 2. titanium particles were examined by scanning electron and the size was determined by semi-automated image analysis. The 3-5 th gereration of human osteoblast were cultured in medium with different concentration of particulates titanium alloy (1mg/ml, 0.1mg/ml, 0.01mg/ml). Cell growth and proliferation was detected by MTT method after 2、4、6 days that particles were added into medium and ALP activity was measured by kit after 4、7、10 days respectively. 3. With above same methods,the 3-5th generation of human osteoblasts were cultured for 3、6、9days after different concentration of particulates titanium alloy (1mg/ml, 0.1mg/ml, 0.01mg/ml) were added into the medium and OPG gene expression was quantified by RT-PCR.

1、取人胚胎颅骨骨膜，采有用酶消化法和组织培养法获取成骨细胞体外培养并传代，观察细胞形态，生物特点及成骨特性，并绘制生长曲线同时碱性磷酸酶染色鉴定成骨细胞以及比较冻存前3-5 代与冻存后成骨细胞的特点。2、电镜下观察钛合金颗粒的形态并测量其粒径，将不同浓度的钛合金颗粒(1mg/ml，0.1mg/ml，0.01mg/ml)与成骨细胞共同培养，分别于第2、4、6 天用MTT 法测量细胞增殖情况及4、7、10天用试剂盒检测碱性磷酸酶活性。3、分别将不同浓度的钛合金颗粒(1mg/ml，0.1mg/ml，0.01mg/ml)与成骨细胞基因培养3、6、9 天用RT-PCR 方法半定量测定骨保护素基因mRNA 的表达。

When using urea-hydroperoxide as oxygent, just the trimethylphosphine adsorbed on the Lewis acid sites in TS-1 zeolite was oxidized. It further confirmed that the hydroperoxo-titanium species formed by the interaction between the titanium in Lewis acid sites and urea-hydroperoxide are the active oxidation center, and the titanium in the framework as Lewis acid sites enhances the oxidation ability of hydroperoxide. 3. Phenylacetaldehyde and benzaldehyde are found to be the major products in the catalytic oxidation of styrene over TS-1 zeolite, and styrene epoxide is not as speculated detected.

当以过氧化氢尿素为氧化剂时，室温条件下吸附在TS-1分子筛Lewis酸性位的三甲基膦即能被氧化，由此进一步证明，TS-1分子筛中由Lewis酸性位的骨架钛与过氧化氢相互作用形成的过氧化钛物种是三甲基膦氧化反应的活性中心，骨架钛作为Lewis酸中心提高了过氧化氢的氧化能力。

Quadridentate Titanium was detected in the samples with 5% at the low temperature. However, absorption peak of Sexadentate Titanium was not detected at the high temperature. it might not be detected by IR Spectra because of too little Titanium phase.

结果表明，未添加的样品中主要检测到的是硅氧链的变化；添加5%的样品，低温检测到有四配位的钛存在，但是高温时却未检测到六配位的钛离子的吸收峰，这可能是由于生成的含钛晶相太少，红外光谱未能敏感的检测到。

It is prepared from titanium tetrachloride carried on an alcohol carrier that Mg and Li chlorides with molar ratio of 1:(2-20) are dissolved in alcohol, and by: co-dissolving Mg chloride and Li chloride in a low carbon alcohol and stirring at high speed in an inert medium to form micro-particles; reacting the said alcohol with titanium tetrachloride twice, adding organic acid polyester at first time, washing out uncarried titanium tetrachloride, and drying to obtain powdery pruduct.

它是由四氯化钛负载于将氯化镁和氯化锂共溶于醇形成的醇合物载体上组成，其中氯化锂与氯化镁的摩尔比为1∶2～1∶20。这种主催化剂组分的制备有两个步骤：(1)无水氯化镁和氯化锂共溶于低碳醇中形成醇合物，并在惰性介质中高速搅拌形成醇合物微粒；(2)醇合物与四氯化钛进行两次反应，其中第一次反应时加入有机酸多元酯。反应结束后用惰性溶剂洗去未负载的四氯化钛，干燥后得到呈粉末状的主催化剂组分。

They are FF testing methods, surface treatment technique, evaluation of the properties of surface modification layer, coating induced embrittlement, selection of coating materials, effects of SP and other surface modification on fretting fatigue resistance . A new coating technology combined with shot peening is proved in improving FFR of titanium alloy. The relation between fretting wear and fretting fatigue mechanism of titanium alloy are discussed on the basis of the experimental results. The main contributions are as follows:(1) Shot peening is the most efficient way in improving fretting fatigue resistance of titanium alloys. Working hardening, roughening and compressive residual stress are involved in the shot peened surface.

本文针对上述问题，从影响FF行为的关键环节：FF实验方法、表面处理工艺技术及表层性能评价、镀层引起的钛合金脆化行为、脆化机制及镀层材料的选择、喷丸强化因数和表面涂层对钛合金FF抗力的影响、FF与微动磨损的联系等，深入系统地研究影响钛合金FF抗力的控制因数，探讨FF机理，并通过喷丸形变强化与新型表面镀或渗层合理复合，达到进一步提高钛合金FF抗力的目的。

But GST= 0.156, Nm=1. 588. As a result, the foundation of Youyongchi Avicennia marina population was the result of the migration of hypocotyles and human factors.

这项工作可以为海岸防护林中新引进种类的判定以及为研究种群建立者效应方法的确定提供科学依据。

The two-dimensional CDRC-ADI-FDTD update equations for collision unmagnetized plasma are induced. The unconditional stability of the CDRC-ADI-FDTD formulation for collision unmagnetized plasma is obtained by the examples.

推导了碰撞非磁化等离子体中的二维CDRC-ADI-FDTD迭代公式，并用算例验证了碰撞非磁化等离子体CDRC-ADI-FDTD算法也是无条件稳定的。