弱激光对小鼠血液流变学指标的影响

选用雄性昆明种小鼠 ,随机分为对照组 (A)、He -Ne激光照射 10min组 (B)、He -Ne激光照射 2 0min组 (C)三组。结果显示 ,照射2 0min组 (C)小鼠的血细胞压积 (HCT)显著高于对照组 (P <0 .0 5 ) ,其余各项指标均无显著改变 ,结果对临床治疗具有一定的指导作用     

He-Ne激光照射促进大面积皮肤创面愈合的临床观察

目的 :　探讨低强度He -Ne激光照射辅助治疗对大面积皮肤创面愈合的疗效。方法 :选择骨外伤患者 2 10例 ,分为常规治疗组 ( 10 7例 )和低强度He -Ne激光辅助治疗组 ( 10 3例 ) ,各自分为二个亚组即不规则及长切口组 ( 1亚组 )和大面积皮肤损伤组 ( 2亚组 ) ,回顾分析低强度He -Ne激光照射的疗效。结果 :常规治疗组和低强度He -Ne激光照射辅助治疗组中的 1亚组皮肤创面平均愈合时间分别为 10 .8± 1.3天和 7.1± 1.1天 ,P <0 .0 5。而 2亚组创面平均愈合时间分别为 13 .4± 1.7天和 8.9± 1.5天 ,P <0 .0 5。两大组创面均达到临床治愈 ,但优良愈合率在常规治疗组和低强度He -Ne激光照射辅助治疗组中的 1亚组分别为 75 %和 90 % ,P <0 .0 5。在 2亚组分别为 5 4%和 87% ,P <0 .0 5。结论 :低强度He -Ne激光照射可显著缩短大面积皮肤创面愈合时间 ,同时 ,可明显提高皮肤创面愈合质量 ,减少瘢痕疙瘩形成和愈合皮肤不适感     

弱激光照射对血液自由基代谢的影响

选用雄性昆明种小鼠 ,随机分为对照组 (A)、He-Ne激光照射 10min组 (B)、He -Ne激光照射 2 0min组 (C)三组。结果显示C组超氧化物歧化酶 (SOD)比活性和丙二醛 (MDA)值均显著降低 ,说明较高剂量弱激光可能抑制了血液中自由基的产生 ,结果对临床治疗具有一定的指导作用     

He-Ne激光血管内照射对健康兔血液流变学指标的影响

目的 :研究He -Ne激光血管内照射对血液流变学指标的影响。方法 :以健康兔为模型 ,用光纤引导作血管内照射 ,分别在照射前、照射一次后当天、照射七次后当天检测全血粘度及红细胞变形指数。结果 :与照射前比较 ,一次照射后 ,全血粘度平均降低 1 7% ,红细胞变形指数提高 1 2 % ;七次照射后 ,全血粘度平均降低 43% ,红细胞变形指数提高 2 7%。结论 :He -Ne激光血管内照射可降低血液粘度 ,提高红细胞的变形能力 ,改善微循环 ,对缺血性心脑血管疾病有治疗作用     

He-Ne激光对愈合延迟创面修复的促进作用

目的 :观察He -Ne激光对整形手术愈合延迟创面的修复作用及可能发生的不良反应。方法 :选择整形术后创面愈合延迟患者 42例为受试对象 ,A组 ( 2 2例 )为治疗组 ,用He -Ne激光照射联合常规换药方法处理 ,B组 ( 2 0例 )为对照组 ,单纯采用常规换药方法处理 (观察激光对坏死或感染创面有无促进愈合作用及是否可减少再手术植皮率 ,并观察其不良反应 )。结果 :A组患者创面 3周内愈合率为 86 .82 % ,B组患者创面 3周内愈合率为 5 5 % ;A组患者再手术植皮率明显低于B组。 (P <0 .0 5 )A组创面分泌物及创周炎明显轻于B组 ;两组患者创面均未发现明显不良反应。结论 :He -Ne激光可促进整形术后愈合延迟创面愈合 ,缩短愈合时间 ,减少再手术植皮率 ,无明显不良反应     

低能量He-Ne激光血管内照射对血液循环的影响

低能量激光血管内照射 (intravascularlow -lev ellaserirradiation ,ILLLI)在上世纪 80年代首先兴起于前苏联 ,在我国 90年代初开始临床应用。激光源有氦氖激光、半导体激光等。其中 ,以He -Ne激光血管内照射为主广泛应用于临床[1- 3] 。　　低能量He -Ne激光由He和Ne气体为工作物质的激光源 ,将激光经柔软的光纤导入肘正中静脉、贵要静脉。激光输出波长 6 32 .8nm ;功率 3- 6mW ;光量子能量约 1.96eV ;持续照射 30 - 6 0分钟 ,疗程依病情而定 ,一般每疗程为 7- 10次 ,两疗程间间隔3- 5天。低能量血管内照射时 ,激光束发出光量子经生…     

光动力学疗法联合He-Ne激光照射脾区对荷瘤小鼠肿瘤生长的抑制作用

目的 :探讨光动力学疗法联合He -Ne激光照射脾区对荷瘤小鼠肿瘤生长的抑制作用。方法 :将 4 0只昆明种小鼠接种Louis肺癌细胞 ,做成动物模型。随机分为 4组 ,对照组、光动力学疗法组、He-Ne激光照射组、光动力学疗法与He-Ne激光照射脾区联合治疗组。观察各组小鼠肿瘤的体积、肿瘤抑制脾区率随照射天数的变化及肿瘤生长延迟期。结果 :光动力学疗法与He -Ne激光照射脾区联合治疗组 ,肿瘤抑制率和生长延迟期均优于其他组。结论 :动力学疗法结合He-Ne激光照射脾区可提高治疗肿瘤的疗效     

He-Ne激光照射合并超短波治疗麦粒肿临床研究

目的 :　观察He -Ne激光合并超短波治疗麦粒肿的临床疗效。方法 :将临床诊断的 15 4例麦粒肿患者分为He -Ne激光合并超短波治疗组 76例 (治疗组 )和超短波治疗组 78例 (对照组 ) ,治疗后观察比较两组疗效。结果 :治疗组治愈率 82 .89% ,平均治愈时间 4.0 2天 ;对照组治愈率 46.15 % ,平均治愈时间 6.74天 ,两组资料经统计学处理 ,治愈率有非常显著性差异 (P <0 .0 1) ,平均治愈时间有非常显著性差异 (P <0 .0 1)。结论 :治疗组治愈率明显优于对照组并且治疗组平均治愈时间明显短于对照组 ,He -Ne激光照射合并超短波治疗麦粒肿有显著临床效果 ,具有重要的临床应用价值     

He-Ne激光与生物组织相互作用的信息传递机理研究

根据生物组织的电生理特性 ,建立He-Ne激光与生物组织相互作用时信息传递的物理模型 ,再根据电路和电磁学的有关理论 ,探讨He -Ne激光与生物组织相互作用的信息传递规律 ,从而阐明了激光作用于生物组织时信息传递的机制     

激光穴照加综合疗法治疗脑卒中肩～手综合征临床疗效观察

临床观察激光穴位照射加综合治疗法治疗脑卒中肩～手综合征 80例 ,发现在改善临床症状及体征、恢复上肢功能方面优于单纯针刺组 ,说明He -Ne激光与综合疗法治疗脑卒中肩～手综合征为一种有效的治疗方法     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Development of the readout system for waveguide multilayer optical card

Waveguide multilayer optical card （WMOC） is a novel storage device of three-dimensional optical information. An advanced readout system fitting for the WMOC is introduced in this paper. The hardware mainly consists of the light source for reading, WMOC, motorized stages addressing unit, microscope imaging unit, CCD detecting unit and PC controlling ＆ processing unit. The movement of the precision motorized stage is controlled by the computer through Visual Basic （VB） language in software. A control panel is also designed to get the layer address and the page address through which the position of the motorized stages can be changed. The WMOC readout system is easy to manage and the readout result is directly displayed on computer monitor.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Collinear phase-matching study of terahertz-wave generation via difference frequency mixed in GaAs and Inp

The collinearly phase-matching condition of terahertz-wave generation via difference frequency mixed in GaAs and InP is theoretically studied. In collinear phase-matching, the optimum phase-matching wave hands of these two crystals are calculated. The optimum phase-matching wave bands in GaAs and lnP are 0.95-1.38μm and 0.7-0.96μm respectively. The influence of the wavelength choice of the pump wave on the coherent length in THz-wave tuning is also discussed. The influence of the temperature alteration on the phase-matching and the temperature tuning properties in GaAs crystal are calculated and analyzed. It can serve for the following experiments as a theoretical evidence and a reference as well.     

Effects of the alloy compositions on the phonon-polaritons in ternary mixed crystals

Composition dependence of bulk and surface phonon-polaritons in ternary mixed crystals are studied in the framework of the modified random-element-isodisplacement model and the Bom-Huang approximation. The numerical results for Several Ⅱ - Ⅵ and Ⅲ- Ⅴ compound systems are performed, and the polariton frequencies as functions of the compositions for ternary mixed crystals AlxGa1-xAs, GaPxAS1-x, ZnSxSe1-x, GaAsxSb1-x, GaxIn1-xP, and ZnxCd1-xS as examples are given and discussed. The results show that the dependence of the energies of two branches of bulk phonon-polaritons which have phonon-like characteristics, and surface phonon-polaritons on the compositions of ternary mixed crystals are nonlinear and different from those of the corresponding binary systems.     

New insert layer structure OLEDs

An insert layer structure organic electroluminescent device（OLED） based on a new luminescent material （Zn（salen）） is fabricated. The configuration of the device is ITO/CuPc/NPD/Zn（salen）/Liq/LiF/A1/CuPc/NPD/Zn（salen）/Liq/LiF/A1. Effective insert electrode layers comprising LiF（1nm）/Al（5 nm） are used as a single semitransparent mirror, and bilayer cathode LiF（1 nm）/A1（100 nm） is used as a reflecting mirror. The two mirrors form a Fabry-Perot microcavity and two emissive units. The maximum brightness and luminous efficiency reach 674 cd/m^2 and 2.652 cd/A, respectively, which are 2.1 and 3.7 times higher than the conventional device, respectively. The superior brightness and luminous efficiency over conventional single-unit devices are attributed to microcavity effect.