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Combinatorial Supports for Ru-based Ammonia Synthesis Catalysts

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Chinese Chemical Letters 2005年第2期16卷 273-274页

作者： GuiYuHUANG JingDongLIN ZhongXiangXU DaiWeiLIAO DepartmentofChemistry DepartmentofChemicalEngineeringandBioengineering DepartmentofChemistry／／TheStatekeyLaboratoryofPhysicalChemistryonSolidSurfaces／／InstituteofPhysicalChemistry XiamenUniversityXiamen361005

The support materials of ruthenium-based catalysts for ammonia synthesis were preparedusing mixed solutions composed of magnesium nitrate, aluminum nitrate and calcium nitrate with acertain ratio. The catalysts supported on complex oxides were more active and the optimal activitytemperatures were lower than that supported on single oxide under the same conditions. Thecatalyst with Mg-Al complex oxide as support prepared by calcinating hydrotalcite-like compoundhad significantly higher activity, 38.42 mL NH3?h-1?g-1 at 673 K. The BET determination showedthat the Mg-Al complex oxide possessed large surface area, 140.95 m2?g-1, similar to γ-Al2O3.

关键词： Hydrotalcite magnesium aluminum oxide ammonia synthesis ruthenium.

Diels-Alder addition of some 6-and 5-member ring aromatic compounds on the Si(001)-2×1 surface: dependence of the binding energy on the resonance energy of the aromatic compounds

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Science China Chemistry 2001年第5期44卷 473-477页

作者：吕鑫 LINM.C. 徐昕王南钦张乾二 1. State Key Laboratory for Physical Chemistry of Solid Surfaces Institute of Physical Chemistry Department of Chemistry Xiamen University 361005 Xiamen China 2. Cherry L. Emerson Center for Scientific Computation Department of Chemistry Emory University 30322 Atlanta GA USA

An energy decomposition scheme is proposed for understanding of the relative low binding energy of the [4+2] cycloaddition of benzene on the Si(001)-2×1 surface. By means of density functional cluster model calculations, this scheme is demonstrated to be applicable to some other 6- and 5-member ring aromatic compounds, giving a trend that the binding energy of the [4+2] cycloaddition products of those aromatic compounds on the Si(001) surface depends strongly on their resonance energy.

关键词： silicon aromatic compound adsorption Diels-Alder reaction cluster model density functional theory.

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原子团簇Ge_7的结构与稳定性

Chinese Journal of Structural Chemistry 2002年第4期21卷 432-436页

作者：罗海彬刘明宏邱志金陈明旦张乾二固体表面物理化学国家重点实验室厦门大学化学系厦门361005

用分子图形软件设计出多种锗原子团簇Ge7的模型,并进行B3LYP密度泛函几何构型优化和振动频率计算,得到8种稳定的同分异构体结构。在锗原子团簇中,大部分原子以三、四、五配位成键。根据分子的总能量,最稳定的Ge7构型为D5h构型。Ge7稳定... 详细信息

用分子图形软件设计出多种锗原子团簇Ge7的模型,并进行B3LYP密度泛函几何构型优化和振动频率计算,得到8种稳定的同分异构体结构。在锗原子团簇中,大部分原子以三、四、五配位成键。根据分子的总能量,最稳定的Ge7构型为D5h构型。Ge7稳定结构中高配位原子越多,构型越稳定。

关键词：原子团族 Ge7 结构稳定性同分异构体 B3LYP 密度泛函锗

Transoral atlantoaxial reduction plate fixation for irreducible atlantoaxial dislocation

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Chinese Journal of Traumatology 2006年第1期9卷 14-20页

作者：尹庆水艾福志章凯昌耘冰夏虹吴增辉权日麦小红刘景发 Department of Orthopedics Liuhuaqiao Hospital Guangzhou 510010 China

Objective： To design a clinically applicable transoraipharyngeai atlantoaxiai reduction plate （TARP）, introduce the operation procedure, and evaluate its preliminary clinical effects. Methods： A novel TARP system, including butterfly titanium alloy plate, self-locking screws, atlantoaxial reductor and other operational instruments was developed. This system was applied clinically on five patients with irreducible atlantoaxiai dislocation of congenital or traumatic origin. During operation, the reduction was completed by the combined action of the plate and the atlantoaxiai reductor after transoral joint release and cord decompression. Bone graft granules were implanted between the bilateral atlantoaxiai joints and TARP was used to immobilize subsequently the atlas and axis. Results： Clinical application demonstrated that TARP could induce instant reduction and that the method was operationally feasible and its postoperationai effect was satisfactory. Conclusions： The design of TARP is novel. The operational procedure is simple and easy to use. Furthermore, instant reduction can be completed during the operation and the fixation is relatively stable. TARP is an ideal alternative for irreducible atlantoaxiai dislocation and may have excellent prospects for further clinical applications.

关键词： Atlanto-axiai joint Arthrodesis Fracture fixation, internal fixation Dislocations

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催化裂解C_2H_2制备空心碳球

物理化学学报 2003年第11期19卷 1035-1038页

作者：许宗祥林敬东欧延廖代伟厦门大学化学系

在高岭土负载的镍催化剂上,于850℃催化裂解乙炔制备了直径约500nm的空心碳球。用XRD、TEM、SEM和显微激光Raman光谱对所得的碳球及催化剂进行了表征,并初步探讨了反应机理。

关键词：催化裂解 C2H2 制备空心碳球镍高岭土乙炔 TEM SEM XRD Raman光谱碳材料

The anatomical study of transoral atlantoaxial reduction plate internal fixation

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Chinese Journal of Traumatology 2006年第1期9卷 8-13页

作者：艾福志尹庆水王智运夏虹昌耘冰吴增晖刘景发 Department of Orthopedics Liuhuaqiao Hospital Guangzhou 510010 China

Objective： To study relevant anatomical features of the structures involved in transorai atlanto-axiai reduction plate （TARP） internal fixation through transorai approach for treating irreducible atlanto-axiai dislocation and providing anatomical basis for the clinical application of TARP. Methods： Ten fresh craniocervicai specimens were microsurgicaily dissected layer by layer through transorai approach. The stratification of the posterior pharyngeal wail, the course of the vertebral artery, anatomical relationships of the adjacent structures of the atlas and axis, and the closely relevant anatomical parameters for TARP internal fixation were measured. Results： The posterior pharyngeal wall consisted of two layers and two interspaces： the mucosa, prevertebrai fascia, retropharyngeai space, and prevertebrai space. The range from the anterior edge of the foramen magnum to C3 could be exposed by this approach. The thickness of the posterior pharyngeal wall was （ 3.6 ± 0.3 ） mm （ranging 2.9-4.3 mm） at the anterior tubercle of C1, （6.1 ±0.4） mm （ ranging 5.2-7.1 mm） at the lateral mass of C1 and （5.5±0.4） mm （ranging4.3-6.5 mm） at the central part of C2, respectively. The distance from the incisor tooth to the anterior tubercle of C1, C1 screw entry point, and C2 screw entry point was （82.5 ±7.8） mm （ranging71.4-96.2 mm）, （90. 1 ±3.8） mm （ranging 82.2-96.3 mm）, and （89.0±4.1） mm （ranging 81.3- 95.3 mm）, respectively. The distance between the vertebral artery at the atlas and the midline was （25.2 ± 2.3） mm （ ranging 20.4-29.7 mm ） and that between the vertebral artery at the axis and the midline was （ 18.4 _ 2.6 ） mm （ ranging 13.1-23.0 mm）. The allowed width of the atlas and axis for exposure was （39.4 ±2. 2） mm （ ranging 36.2-42. 7 mm ） and （ 39.0 ± 2.1 ） mm （ ranging 35.8-42.3 mm ）, respectively. The distance （ a ） between the two atlas screw insertion points （center of anterior aspect of C1 lateral mass ） was （ 31.4 ± 3.3 ）mm （ ranging 25.4-36.6 mm）. The vertical

关键词： Atlantoaxiai joint Arthrodesis Fracturefxation Internal fixators Bone plates Anatomy

电化学原位步进扫描时间分辨显微镜FTIR反射光谱

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物理化学学报 2002年第11期18卷 989-993页

作者：周志有孙世刚陈声培司迪贡辉厦门大学固体表面物理化学国家重点实验室化学系厦门361005

结合步进扫描傅立叶变换红外光谱仪和红外显微镜,建立了电化学原位步进扫描时间分辨显微镜FTIR反射光谱.采用微电极和利用纳米结构表面的异常红外效应,显著提高表面吸附物种的红外检测灵敏度和红外电极表面对极化电位的响应速度,使广泛... 详细信息

结合步进扫描傅立叶变换红外光谱仪和红外显微镜,建立了电化学原位步进扫描时间分辨显微镜FTIR反射光谱.采用微电极和利用纳米结构表面的异常红外效应,显著提高表面吸附物种的红外检测灵敏度和红外电极表面对极化电位的响应速度,使广泛应用的外反射型薄层红外电解池的时间常数(τ=R1Cd)从使用常规盘电极的约40ms降低到0.65ms.研究了酸性介质中CO在Pt电极上的吸附过程,谱图的时间分辨率达50μs.

关键词：电化学原位步进扫描时间分辨显微镜 FTIR 反射光谱时间分辨红外光谱红外显微镜铂微电极 CO 吸附一氧化碳酸性介质

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高择优取向铜镀层的电化学形成及其表面形貌

物理化学学报 2002年第11期18卷 973-978页

作者：辜敏杨防祖黄令姚士冰周绍民汕头大学化学系 2厦门大学化学系固体表面物理化学国家重点实验室物理化学研究所厦门361005

采用电化学方法在H2SO4-CuSO4电解液中获得高择优取向的Cu电沉积层.XRD结果表明,在1.0～6.0和15.0A·dm-2的电流密度下可分别获得(220)和(111)晶面高择优取向的Cu镀层.在同一电流密度下获得的Cu电沉积层织构度随镀层厚度增大而提高.SEM... 详细信息

采用电化学方法在H2SO4-CuSO4电解液中获得高择优取向的Cu电沉积层.XRD结果表明,在1.0～6.0和15.0A·dm-2的电流密度下可分别获得(220)和(111)晶面高择优取向的Cu镀层.在同一电流密度下获得的Cu电沉积层织构度随镀层厚度增大而提高.SEM结果表明,在4.0和15.0A·dm-2的电流密度下可分别获得(220)和(111)织构Cu沉积层,其表面形貌在(220)晶面取向时呈现为细长晶粒连结成的网状,在(111)取向时则呈六棱锥状.提出了可能的机理,认为电流密度变化引起的Cu镀层择优取向晶面的转化归因于电结晶晶面生长方向及生长速度竞争的结果.

关键词：择优取向铜镀层电化学形成电沉积表面形貌镀铜

计算机三维仿真技术在复杂跟骨骨折手术中的应用

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中国修复重建外科杂志 2009年第12期23卷 1447-1450页

作者：章莹夏远军万磊吴文谭新宇谢会斌刘汉辉尹庆水广州军区广州总医院骨科广州510010

目的探讨将计算机三维仿真技术个体化设计应用于复杂跟骨骨折精确手术治疗的效果。方法2007年11月-2008年3月,收治38例跟骨关节内骨折患者。男29例,女9例;年龄14～69岁,平均29.8岁。Sanders分型:Ⅰ型4例,Ⅱ型14例,Ⅲ型12例,Ⅳ型8例。受... 详细信息

目的探讨将计算机三维仿真技术个体化设计应用于复杂跟骨骨折精确手术治疗的效果。方法2007年11月-2008年3月,收治38例跟骨关节内骨折患者。男29例,女9例;年龄14～69岁,平均29.8岁。Sanders分型:Ⅰ型4例,Ⅱ型14例,Ⅲ型12例,Ⅳ型8例。受伤至手术时间3h～5d。CT图像经计算机三维重建后测量健、患侧术前B?hler角,并行撬拨复位计算机三维设计,测量跟骨结节撬拨旋转角度。根据计算机测量骨折块旋转角度,为患者制定个体化手术方案,C臂X线机监测下行跟骨骨折切开复位内固定术。结果计算机测量术前健侧B?hler角为(34.58±4.38)°,患侧为(8.33±12.62)°,比较差异有统计学意义(P0.05),与术前患侧比较差异有统计学意义(P<0.05)。术后28例获随访,随访时间12～22个月,平均18个月。术后1年B?hler角恢复至(32.41±1.42)°。根据美国足踝外科学会足部功能评分系统评定,获优16例,良10例,中1例,差1例,优良率为92.9%。结论计算机三维仿真技术可个体化设计复杂跟骨骨折手术,术中精确恢复B?hler角及距下关节,是辅助治疗跟骨骨折的有效方法。

关键词：跟骨骨折 Bhler角计算机三维仿真技术撬拨复位