104 resultados para Professor Neil W. Archbold
em Chinese Academy of Sciences Institutional Repositories Grid Portal
Resumo:
X-ray photoelectron spectroscopy has been used to measure the valence band offset (VBO) of the w-InN/h-BN heterojunction. We find that it is a type-II heterojunction with the VBO being -0.30 +/- A 0.09 eV and the corresponding conduction band offset (CBO) being 4.99 +/- A 0.09 eV. The accurate determination of VBO and CBO is important for designing the w-InN/h-BN-based electronic devices.
Resumo:
The kinetic studies of the acrylic octadecyl ester and styrene polymerization in microemulsion systems, (1) cetyl pyridine bromide (CPDB)/t-butanol/styrene/water; (2) CPDB/t-butanol/toluene + acrylic octadecyl ester (1:1, w/v)/ water; (3) cetyl pyridine bromide/styrene/formamide, were made by using dynamic laser light scattering techniques (DLS). The mechanisms of nucleation of latex particles were discussed. The most possible nucleation location of the styrene and acrylic octadecyl ester microlatex particles in aqueous microemulsion system is in aqueous phase via homogeneous nucleation. Meanwhile, parts of microlatex particles are possibly produced via swollen micelles (microemulsions) and monomer droplets nucleation. On the other hand, the most possible nucleation location of the styrene microlatex particles in nonaqueous microemulsion system is inside monomer droplets. The relationship between the amount of monomer and the size of microlatex was also investigated. It has been found that the size of microlatex particles could be controlled by changing the amount of monomer. (C) 2002 Elsevier Science B.V. All rights reserved.
Resumo:
研究了WO型乳化液的表面张力,压力雾化喷嘴的乳化液雾化特性与乳化液的组分、乳化剂的黏度以及喷油压力的关系.实验结果表明:乳化液的表面张力接近柴油,但喷雾滴径均大于柴油,而且喷嘴的启喷压力、乳化液组分和乳化剂黏度对乳化液平均滴径均有显著影响.随着启喷压力升高,喷雾滴径明显减小;若启喷压力相同,随着乳化液中水相含量增加(不高于50%),乳化液喷雾滴径随之增加;采用高黏度、低HLB值乳化剂配制的乳化液的喷雾滴径相对较大;内相界面特性和界面上的乳化剂会对滴径分布有重要影响.
Resumo:
The laser-solidified microstructural and compositional characterization and phase evolution during tempering at 963 K were investigated using an analytical transmission electron microscope with energy dispersive X-ray analysis. The cladded alloy, a powder mixture of Fe, Cr, W, Ni, and C with a weight ratio of 10:5:1:1:1, was processed with a 3 kW continuous wave CO2 laser. The processing parameters were 16 mm/s beam scanning speed, 3 mm beam diameter. 2 kW laser power, and 0.3 g/s feed rate. The coating was metallurgically bonded to the substrate, with a maximum thickness of 730 mu m, a microhardness of about 860 Hv and a volumetric dilution ratio of about 6%. Microanalyses revealed that the cladded coating possessed the hypoeutectic microstructure comprising the primary dendritic gamma-austenite and interdendritic eutectic consisted of gamma-austenite and M7C3 carbide. The gamma-austenite was a non-equilibrium phase with extended solid solution of alloying elements and a great deal of defect structures, i.e. a high density of dislocations, twins, and stacking faults existed in gamma phase. During high temperature aging, in situ carbide transformation occurred of M7C3 to M23C6 and M6C. The precipitation of M23C6, MC and M2C carbides from austenite was also observed.
Resumo:
本文以对热工模具进行失效分析的基础上,利用激光熔覆技术,在5CrMnMo基础上设计并制备强韧兼备的抗高温磨损涂层。
Resumo:
A comprehensive strength monitoring system used on a fixed jacket platform is presented in this paper. The long-term monitoring of W-11-4A platform achieved. Structural responses (strain and acceleration) at selected locations, as well as associated environmental parameters, have been obtained. The emphasis of the paper is placed on the system design, and the instrumentation and operation methodology employed in the monitoring of the structural responses. The performance of the system and the characteristic results obtained during its 13-month operation are also summarized.
Resumo:
利用OM、SEM、TEM研究了Fe-Cr-C-W-Ni激光熔覆涂层熔覆态及其高温时效态的微观组织结构。结果表明激光熔覆层组织细小,具有强韧两相组成(奥氏体和M_7C_3碳化物)的微观结构特征,高温时效处理组织中有M_(23)C_6、M_6C、M_2C等新碳化物形成。显微硬度和冲击磨损实验证实了激光熔覆态和峰值时效态熔覆层均具有良好的力学性能。
Resumo:
The spray of emulsified fuel, composed of diesel fuel, water and methanol can make micro-explosion under high temperature conditions, and the viscosity and the atomization characteristics of emulsion have significant effects on the micro- explosion of emulsions. To clarify the combustion mechanism of water-in-oil emulsion sprays, combustion bomb experiments were carried out, and the droplet group micro- explosions in W/O fuel emulsion sprays in a high-pressure, high-temperature bomb were observed clearly by a multi-pulsed, off-axis, image-plane ruby laser holocamera and continuously by a high-speed CCD camera.The viscosity and atomization characteristics of emulsions were also studied experimentally. The experimental results show that the higher concentration of the aqueous phase (water-methanol) (<50%) increases the viscosity of the emulsions, especially for higher agent concentration, and higher aqueous phase concentration and higher viscosity results in lager Sauter Mean Diameter (SMD). The experiment results also show that the different kinds of emulsifying agents, with different Hydrophile-Lipophile Balance (HLB) values, have significant influence on the viscosity of the emulsions.
Resumo:
本文通过数值模拟研究了W火焰锅炉的三维速度场分布,数值结果和试验结果基本吻合。结果表明:炉内气流形成两个明显的漩涡,延长了煤粉气流在下炉膛的停留时间,同时也增加了炉内气流充满度。加大喉口风速,漩涡运动更加明显,在炉内形成γ型气流,炉内的一、二次风混合更加均匀。
Resumo:
width="149" height="210" align="left" />目录
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=6">访罗湖 忆当年[李佩]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=7">怀念同窗益友郭永怀教授[钱伟长]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=10">郭永怀追求科学、为国献身的一生[洪友士]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=13">深深怀念为核盾牌献身的著名科学家--郭永怀先生 中国工程物理研究院
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=17">深切怀念郭永怀教授的奠基性贡献 中国空气动力研究与发展中心
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=19">胸怀长江长城 心系国家安危--纪念我国核防护工程奠基人郭永怀先生[周丰峻]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=21">缅怀我们的首任系主任--郭永怀教授[辛厚文 马兴孝 俞书勤 何天敬]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=23">科学和技术结合的典范--纪念郭永怀先生诞辰九十周年[郑哲敏 李家春]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=27">怀念与感激[俞鸿儒]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=29">继承先师遗愿,谈我所冲击动力学的发展--纪念郭永怀副院长诞辰九十周年[陈裕泽]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=31">英名长存--纪念郭永怀副院长诞辰九十周年[沈中毅]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=33">郭永怀与我国导弹弹头再入气动物理研究[魏叔如]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=36">科研工作引路人--纪念郭永怀九十诞辰[胡在军]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=38">科技楷模,引路良师--怀念敬爱的郭永怀副院长[朱竟洪 郑百瑛]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=40">七律 永怀永怀郭老师[董务民]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=41">留得春晖映核魂--怀念我们的好领导好老师郭永怀同志[孙德纶 张克才]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=44">难以忘怀--忆郭永怀副院长事迹点滴[孙天雄]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=46">研究工作与工程技术工作之间的关系[谈庆明]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=48">忆敬爱的郭永怀老师[张兆顺 呼和敖德]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=49">根深叶茂 厚积薄发--追忆恩师郭永怀先生教诲我打好基础[严宗毅]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=51">力学前辈,科德风范[徐友钜]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=52">领导的楷模 学者的典范 青年的导师--怀念郭永怀副院长[于长勤]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=54">怀念郭永怀副院长[陈裕泽]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=56">关于郭永怀事迹的回顾[张长富]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=57">严谨的导师,可亲的长者--忆著名的空气动力学家郭永怀先生[吴兰春]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=59">严谨细致 实事求是--纪念郭永怀九十诞辰[李启廉]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=60">纪念核武器环境试验技术的奠基人--郭永怀副院长诞辰九十周年[李荣林]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=62">郭老精神激励着材料科学研究的不断深入[周维宣 谭云]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=65">郭永怀副院长的关怀与我所有机材料研究的发展[陈晓丽]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=69">忆与郭永怀副院长的一次谈话[孙德纶]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=72">缅怀郭永怀院士[陈家镛]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=73">记郭永怀先生二三事[屠善澄]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=222">Remembering Yunghuai Kuo[C.C.Lin]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=74">Recall with love and respect[William R.Sears]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=75">Y.H.Kuo:An appreciation[Frank E.Marble]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=76">A commemorative tribute to Professor Guo Yonghuai[T.Y.Wu]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=78">Y.H.Kuo:A great scientist,revered teacher and good friend[Alfred Ritter]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=80">氢氧燃烧及爆轰驱动激波管[俞鸿儒]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=88">颗粒材料中致密波结构研究[孙锦山 朱建士 贾祥瑞]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=98">网格与高精度差分计算问题[张涵信 呙超 宗文刚]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=105">植被层湍流的大涡模拟[李家春 谢正桐]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=113">半浮区液桥热毛细振荡流[唐泽眉 阿燕 胡文瑞]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=121">再入湍流尾迹及其对雷达散射的影响研究[牛家玉 于明]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=129">超声射流中CS2分子态分辨转动弛豫研究[陈从香 刘世林 戴静华 张志萍 马兴孝]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=135">37mm冲压加速器实验和计算[柳森 简和祥 白智勇 平新红 部绍清]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=141">化学体系中噪声诱导的时空有序结构和随机共振[辛厚文 侯中怀 杨灵法]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=146">根据守恒律计算热流和摩阻的有限元提法[童秉纲 段占元]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=151">高阶精度线性耗散紧致格式的渐近稳定性[邓小刚 毛枚良]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=160">离散流体力学:理论和数值方法[高智]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=171">2号复合离心机自动控制系统研制[王磊 林明 冯晓军]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=178">海沧大桥气动弹性特性风洞试验研究[李明水 陈忻 张大康 王卫华]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=183">内爆炸载荷下圆管变形、损伤和破坏规律的研究[李永池 李大红 魏志刚 孙宇新]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=191">两种凝聚炸药的静态断裂性能实验研究[罗景润 韦日演 马丽莲]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=196">圆柱体侵彻薄靶极限击穿速度估算探讨[吴应白 唐平]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=201">动力学修改方法在夹具设计中的应用研究[蒲怀强 唐定勇]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=207">Numerical simulation of non-linear stability of two-dimensional supersonic boundary layer[Shen Qing Yuan Xiangjiang]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=211">我为什么回到祖国--写给还留在美国的同学和朋友们[郭永怀]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=214">科研工作与工程技术工作如何衔接[郭永怀]
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=215">钱学森给郭永怀的两封信
- href="http://book.chaoxing.com/ebook/detail.jhtml?id=10655056&page=216">W.R.Sears给郭永怀的信
Resumo:
A diode stack end-pumped Nd:YVO4 slab laser at 1342 nm with near-diffraction-limited beam quality by using a hybrid resonator was presented. At a pump power of 139.5 W, laser power of 35.4 W was obtained with a conversion efficiency of 25.4% of the laser diode to laser output. The beam quality M-2 factors were measured to be 1.2 in the unstable direction and 1.3 in the stable direction at the output power of 29 W. (C) 2009 Optical Society of America
Resumo:
报道了一种MOPA式国产单频光纤放大器。该放大器采用连续波单频激光器作为主振荡器,采用我国自行设计和制造的大模场面积掺Yb双包层光纤作为功率放大器,在波长1064 nm处实现了最高7.3 W连续激光输出,斜率效率为39%,光-光转换效率为26%。此外,对光谱特性及放大的自发发射的抑制也进行了探讨。