水利施工中的钻孔灌注桩技术探析

随着我国经济的快速发展,水利工程也得到了快速发展,然而在水利工程中,工程钻孔技术作为水利工程施工的一个重要难点,它直接关系到水利工程的质量。在水利工程施工中,钻孔灌注桩技术作为一种常用的地基处理技术,它为建筑工程施工质量提供了技术保障。本文就水利施工中的钻孔灌注桩技术进行了相关的分析。     

滑膜施工技术在水利工程中的应用

随着我国经济水平的持续提升和水利工程整体水平的不断进步,在水利工程中滑膜施工技术得到了越来越广泛的应用。本文从对滑膜施工技术进行简析入手,对滑膜施工技术在水利工程中的应用进行了分析。     

水利工程围堰施工技术要点探析

随着我国经济水平的持续提升和水利工程整体水平的不断进步,水利工程围堰施工技术要点得到了越来越广泛的关注。本文从对水利工程围堰施工技术进行简析入手,对水利工程围堰施工技术要点进行了分析。     

探讨新技术在水利工程施工中的运用问题

我国河流众多,水资源十分丰富,兴建水利工程对各大江大河中蕴含的资源进行合理利用以造福人民是古今中外都在不断探索的一个方向。根据不同河流的特点建筑水利工程,有利于充分利用我国的水资源。在当前的水利工程施工中,要注重不断革新施工技术,积极探索能切实提高施工质量的新型技术,进而提高水利工程的施工质量和施工速度,最大限度地利用好我国的水资源。对目前水利施工中新技术应用的思考,能为我国的水利工程施工提供良好的参考。本文对新技术在水利施工中的运用问题进行了探讨。     

现代化水利工程施工技术分析

水利工程是我国农业的基础设施建设,同时也为人们的生活用水提供保障,它不仅能够保证农业的持续发展,也关系着社会的安定以及国家和人民的财产和利益。随着科技的不断发展,水利工程施工技术也在不断进步,现代化水利工程施工技术可以有效地提高水利工程建设的效率,为水利工程建设提供可靠的技术保障。     

水利工程隧洞施工管理探究

隧道施工质量影响水利工程的使用寿命,其施工过程管理与水利工程质量控制密切相关。特别是隧道施工与施工技术在过程中的应用密切相关,是一种对技术要求很高的施工项目。因此,在隧道施工过程中,适当的质量管理至关重要,管理者也需要对施工技术有一定的掌握,做好充分的技术准备,优化施工方案,进行严格的技术监督。本文将谈谈水利工程隧道施...     

堤防防渗施工技术在水利工程中实践探究

本文首先总结水利工程堤防防渗施工的重要性,再探究目前我国水利工程堤防防渗施工技术的缺陷,最后给出完善水利工程堤防防渗施工技术的措施,以促进水利工程堤防防渗施工技术进一步发展。     

水利闸站施工中的混凝土技术分析

如今,我国水利事业发展迅速,水利工程的数量在不断增多;闸站在水利工程中发挥着十分重要的作用,它的施工质量将会直接影响到水利工程的整体质量;而闸站施工的关键就是混凝土技术,需要对混凝土技术产生足够的重视。在具体实践中,需要控制每一个环节的质量,保证工程整体质量。本文以某水利工程为例,分析了水利工程闸站施工的混凝土技术,希望可以提供一些有价值的参考意见。     

水利工程施工管理的现状及对策探讨

随着时代的发展,水利工程在人们的生活工作中占据了越来越重的位置,然而目前我国水利工程施工管理仍处于发展阶段,一些常见的问题,也将导致水利工程整体的质量。笔者结合自身经验,对水利工程施工管理的现状进行分析,并提出相应的对策。望能为我国水利工程的发展作出微薄之力。     

关于如何做好水利工程施工组织设计的几点思考

水利工程在我国经济、农业发展过程中发挥着重要的作用。水利工程施工的工期比较长,施工条件也比较复杂,在加上施工任务繁重、时间较紧,而且很多因素都对水利工程施工进度产生着较大的影响,因此,对水利工程施工组织设计进行不断的优化,提高水利工程施工组织设计水平就显得尤为重要。     

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.