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金属化

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The third approach is about the concept of an ITO direct Ohmic contact structure on GaP window layer. The direct Ohmic contact structure is performed by the deposition of an AuBe diffused thin layer and the following activation process on the surface of a Mg-doped GaP window layer. The presence of this thin AuBe diffused layer yields the Be dominant metallic surface layer and significantly reduces the barrier height between the ITO and p-GaP layer. Via the modification of contact structure, not only the brightness was significantly increased but the reliability was comparable to the conventional LED without this structure.

第三个研究为一种具有直接欧姆接触在p型磷化镓窗层与氧化铟锡界面的制程方法,於本研究中并无习知砷化镓欧姆接触层的存在,我们利用金/金铍金属藉由热退火程序,使其金铍原子在磷化镓窗层表面形成具金属特性之薄膜层,降低磷化镓与氧化铟锡接触产生之接面能障;另外,该元件在氧化铟锡直接欧姆接触於磷化镓窗层下,除亮度具明显提升外,在稍大电流(20毫安培)元件可靠度测试下,亦未有明显衰减情形发生。

This paper is focused on the preparation, characterization of metal clusters and theircatalytic performance in the enantioselective as well as stereoselective hydrogenations. It iscomposed of the five parts as follows: Chapter 1 A review was given on the two most studied enantioselective systems—Ni/TA and Pt/cinchona system, including some recent progress.

本论文研究了铂、铱纳米金属簇在α-酮酯、α-二酮不对称氢化中的催化性能及金属离子在α-二酮立体选择性氢化中的修饰作用,主要分为以下几部分:第一章对多相不对称催化体系一Ni/TA和Pt/cinchona及其一些最新进展作了较系统的评述;同时简要介绍了纳米金属簇的特性及其在催化中的一些应用。

New contributions of this work are as follows:(1). Preparation of Spherical MgCl_2-Supported Late-Transition Metal Catalysts for Ethylene PolymerizationFacile and effective immobilization of late-transition metal catalysts. 2,3-bis-(2,6-diisopropylphenyl) butane diimine nickel dibromide (1) and 2,6-bis-[1-(2,4,6-trimethylphenylimino)ethyl]pyridine iron dichloride (2), for ethylene polymerization has been achieved, using spherical MgCl_2 supports obtained by thermal dealcoholization of MgCl_2·2.56C_2H_5OH, and the effects of dealcoholization temperature on supported late-transition metal catalysts and the properties of resultant polymers were studied, the results indicated that:1.Supports with appropriate mechanical strength, high surface area and high porosity could be prepared by thermal dealcoholization of spherical MgCl_2·2.56C_2H_5OH supports; 2.BET, XRD, IR, SEM, GPC and DSC analyses indicate that the activities of the supported late-transition metal catalysts and the properties of resultant polymers are strongly dependent on the dealcoholization temperature.

本工作的新贡献如下:(1)、球形氯化镁负载后过渡金属催化荆催化乙烯聚合本文将配合物2,3-双(2,6-二异丙基苯亚胺)丁烷二溴化镍(1)和配合物2,6-二[1-(2,4,6-三甲基苯亚胺)乙基]吡啶二氯化铁(2)分别直接负载于经不同热脱醇温度处理的球形氯化镁载体上,研究了氯化镁载体的脱醇温度对负载化后过渡金属催化剂及其聚合物的影响,研究表明:1、通过对球形MgCl_2·2.56C_2H_5OH载体进行热脱醇处理,可以获得合适机械强度、较高比表面积和较高孔隙度的球形氯化镁载体;2、BET,XRD,IR,SEM,GPC和DSC研究表明,脱醇温度极大地影响负载后过渡金属催化剂的活性和聚合物的性能。

New contributions of this work are as follows:(1). Preparation of Spherical MgCl_2-Supported Late-Transition Metal Catalysts for Ethylene Polymerization Facile and effective immobilization of late-transition metal catalysts. 2,3-bis-(2,6-diisopropylphenyl) butane diimine nickel dibromide (1) and 2,6-bis-[1-(2,4,6-trimethylphenylimino)ethyl]pyridine iron dichloride (2), for ethylene polymerization has been achieved, using spherical MgCl_2 supports obtained by thermal dealcoholization of MgCl_2·2.56C_2H_5OH, and the effects of dealcoholization temperature on supported late-transition metal catalysts and the properties of resultant polymers were studied, the results indicated that: 1.Supports with appropriate mechanical strength, high surface area and high porosity could be prepared by thermal dealcoholization of spherical MgCl_2·2.56C_2H_5OH supports; 2.BET, XRD, IR, SEM, GPC and DSC analyses indicate that the activities of the supported late-transition metal catalysts and the properties of resultant polymers are strongly dependent on the dealcoholization temperature.

本工作的新贡献如下:(1)、球形氯化镁负载后过渡金属催化荆催化乙烯聚合本文将配合物2,3-双(2,6-二异丙基苯亚胺)丁烷二溴化镍(1)和配合物2,6-二[1-(2,4,6-三甲基苯亚胺)乙基]吡啶二氯化铁(2)分别直接负载于经不同热脱醇温度处理的球形氯化镁载体上,研究了氯化镁载体的脱醇温度对负载化后过渡金属催化剂及其聚合物的影响,研究表明: 1、通过对球形MgCl_2·2.56C_2H_5OH载体进行热脱醇处理,可以获得合适机械强度、较高比表面积和较高孔隙度的球形氯化镁载体; 2、BET,XRD,IR,SEM,GPC和DSC研究表明,脱醇温度极大地影响负载后过渡金属催化剂的活性和聚合物的性能。

AlN MSM devices were fabricated on AlN epitaxial thin film deposited on GaN/Sapphire substrates using helicon sputtering system at the low temperature of 300°C. The device characteristic was found to be improved by in situ metallization of Al electrodes. The extremely low dark current (1.39pA at 20V), the ideal factor (1.0125) and the Schottky barrier height (0.916eV) are superior compared to those of AlN MSM in the literature. When the device was illuminated by the 150W D2 lamp, the ratio of the induced photocurrent to dark current is more than 2 orders of magnitude. The illumination effect also shows the linear relationship between the radiation power and the photo current for the MSM devices, indicating the potential applicability for deep UV sensors.

氮化铝金属-半导体-金属光侦测器则是用In situ metallization制程,利用低温回旋溅镀法在氮化镓/蓝宝石基板上沉积之氮化铝,再直接溅镀金属铝作为指叉电极,比较目前文献制作出来的氮化铝MSM元件,可得到很好的元件金半接面之理想因子1.0125,算出萧特基能障高度为0.916eV,并有很低的暗电流为1.39 pA,提升了元件的特性,使用150 W氘灯入射,光暗电流差距可到两个order,且元件之光电流与入射光功率呈线性,显示所制作之氮化铝MSM元件,很适合针对深紫外光波段侦测。

Stone, Whether Or Not Roughly Trimmed Or Merely Cut By Sawing Etc.,Readymade Garment and underwear,Building materials and supplies,Refractory Bricks, Blocks And Similar Refractory Ceramic Constructional Goods, Except Those Of Siliceous Fossil Meals Or Similar Siliceous Earths,Hydrometers, Thermometers, Pyrometers, Barometers, Hygrometers And Psychrometers Etc.; Parts And Accessories Thereof,Converters, Ladles, Ingot Molds And Casting Machines Used In Metallurgy Or In Metal Foundries, And Parts Thereof,Lathes For Removing Metal, Including Turning Centers,Machine Tools, Other Than Lathes, For Drilling, Boring, Milling, Threading Or Tapping By Removing Metal,Machine Tools For Deburring, Honing Or Otherwise Finishing Metal Or Cermets By Means Of Grinding, Abrasive Or Polishing Products, Nesoi,Machine Tools For Planing, Shaping, Broaching Etc., Gear Cutting, Gear Finishing Etc., And Other Machine Tools Working By Removing Metal Etc., Nesoi,Pig Iron And Spiegeleisen In Pigs, Blocks Or Other Primary Forms,Iron And Steel 0 Z' W {-~!

主要进口商品:非电热工业或实验室用炉及烘箱〔包括焚烧炉〕,金属铸造用型箱;型模底板;阳模;型模等;其它金属、金属陶瓷、玻璃、矿物、橡胶和塑料模具,实验室、化学、农业、运输等用陶瓷器,碱金属、碱土金属;稀土金属、钪及钇;汞,花岗岩、玄武岩、砂岩等建筑用石,成衣及内衣,建筑材料及供应品,耐火砖、块、瓦及类似耐火陶瓷建材制品〔但硅质化石粉或类似硅土制的除外〕,液体比重计、温度计、气压计、湿度计等及其零附件,金属冶炼及铸造用转炉、浇包、锭模及铸造机及其零件,切削金属的车床〔包括车削中心〕,切削金属的钻床、镗床、铣床、攻丝机床〔车床除外〕,其它金属或金属陶瓷的磨削、研磨、抛光等精加工机床,切削金属的刨床、插床、拉床、切齿机及其他机床,生铁及镜铁,锭、块或其他初级形状,钢铁

Because of the rapid development of allylation reaction in aqueous media, allylation reaction mediated by new metal systems or metal systems, and its mechanism are reported increasingly.

水相烯丙基化反应由于其发展速度较快,新的金属及金属体系参与的烯丙基化反应以及水相烯丙基化反应的机理研究不断被报道。

17Mm x3mm and ψ15mmx2.5mm coin type blushless motors are respectively developed in 2005 and 2006. MIRDC expects to develop a ψ12mm x 2.5mm coin type blushless motors in 2007. Our research of the motor could assist not only Taiwan motor Industry to become the kingdom of mini motor worldwide once again, but also expect to build a new industry of micro parts in Taiwan.

期望藉由金属中心致力於金属制品高精密、微小化及高值化的制程技术研究,将薄型无刷马达技术开发逐步成熟后,将可应用於许多具有薄化需求的行动设备与装置,并期待能将本项技术与国内有兴趣的相关业者共同参与与投入,让台湾再度成为世界的小马达王国。

A method for forming a passivated metal layer that preserves the properties and morphology of an underlying metal layer during subsequent exposure to oxygen-containing ambients.

本发明提供了一种形成钝化金属层的方法,所述钝化金属层可以在随后暴露于含氧环境时保持下方金属层的性质和形貌。

The catalyst under high temperature hydrolysis into fatty acids and glycerol, with the metal oxides can happen saponification reaction, Formation of metal soap and glycerin, but also for halide, sulfate, sulfonation, oxidation, hydrogenation, polymerization and pyrolysis reaction.

可在催化剂作用下高温水解成脂肪酸和甘油,与金属氧化物能发生皂化反应,生成金属皂和甘油,还可进行卤化、硫酸化、磺化、氧化、氢化、聚合、热解等反应。

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According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。

When I was in school, the rabbi explained everythingin the Bible two different ways.

当我上学的时候,老师解释《圣经》用两种不同的方法。