基于Web的NP-CAPP系统的设计与实现

本文介绍了基于 Web的 NP- CAPP系统的设计与实现过程。包括运行环境、开发工具、数据传输过程、工作原理、安全控制。开发该系统所使用的关键技术 :ASP与 ADO。其特点 :界面友好、使用简单灵活、安全可靠、易于维护及升级、动态交互性强等等。     

国务院办公厅关于建立完整的先进的废旧商品回收体系的意见

各省、自治区、直辖市人民政府，国务院各部委、各直属机构：随着我国工业化、城镇化进程加速和人民生活水平不断提高．产品更新换代周期缩短．废旧商品数量增长加快。由于我国废旧商品回收体系很不完善．不仅影响废物利用．而且极易造成环境污染。建立完整的先进的回收、运输、处理、利用废旧商品回收体系已刻不容缓。经国务院同意，现提出如下意见：     

从电力机车的应用看节能减排的成效

大力推进节能减排、发展循环经济是全面落实科学发展观、实现可持续和谐发展的国家战略,资源优化、能源替代,实现节能减排,同样也是交通运输企业自身发展的需要。相对其他运输方式,铁路运输具有单位运输能耗低、占地少、效率高、污染小等比较优势,尤其是电气化铁路,以电代煤、以电代油,可实现多种能源转换替代,大量节约我国相对匮乏的石油资源,同时减少二氧化硫、氮氧化物等污染物排放。为国家的节能减排战略提供有力支持。     

基于MCU的摩托车数字仪表的研制

本文介绍了一款利用97C2051单片机实现简洁、低成本摩托车数字仪表的设计方法。包括单片机控制、电源、传感器、油量报警、油量显示、车速信息、里程信息、LED显示等模块设计和软件的设计。电路中采用抗干扰技术，具有精度高、误差小、显示柔和等特点。     

五月的鲜花

五月的鲜花开遍了原野。 山西煤层气产业迎来了万紫千红的春天。“气化山西”战略取得重大突破。煤层气和天然气、煤制气、焦炉煤气等清洁能源已广泛应用于发电、化工、交通与居民生活，“三晋”大地更加天蓝、水清、花红、树绿。     

ACCC导线的应用和金具的研制

介绍ACCC导线结构、主要品种、技术参数及应用实例,得出ACCC导线具有高强度、高容量、耐高温、耐腐蚀、线损低、低弧垂等技术特性,提出金具国产化研制的设想,供采用ACCC碳纤维复合芯铝绞线的研究、设计、施工参考。     

煤的形成

煤是由植物在湖泊、沼泽地带埋没在水底、泥沙中,经过漫长的地质年代和地壳运动,在隔绝空气的情况下,在细菌、高温、高压的作用下经过生物、物理、化学作用,逐步演变而成的。     

工程机械发动机及液压系统的冷却系统的智能控制

本文介绍了工程机械电液混和驱动冷却系统的智能控制系统的组成、工作原理、软件设计、硬件设计等。     

地热能的优势

<正>我国的《可再生能源法》说明了可再生能源包括太阳能、风能、生物质能、地热能和海洋能等。实际上,可再生能源有两个来源,一个来自天上的太阳,太阳能、风能、生物质能和海洋能都源于太阳活动;另一个来自地球,地热能是来自地球深部不断向外散发的热。来自太阳的能量都受昼夜、气象等条件影响而变化,它们发出的电力需要"智能电网"来弥补其     

基于物联网的锅炉能效测试集成系统的研发

研发了一种基于物联网的锅炉能效测试集成系统.该系统以物联网为网络技术架构、以Zigbee无线通讯技术高度集成测试设备,实现现场测试数据自动采集、无线传输、记录和处理、现场出具测试报告等功能,可减少测试人员劳动强度,提高测试的科学性、可信度和及时性.     

Synthesis of Cu/ZnO nanocomposites by r.f. co-sputtering technique

Cu/ZnO composite films with different Cu contents were prepared on quartz glass substrates by r.f. co-sputtering technique. The as-grown films were annealed at different temperatures in argon atmosphere for 2 h. TEM images revealed the formation of nanoparticles, which are distributed homogeneously in the ZnO matrix. The size of the nanoparticles increased with the increase of Cu content in the films and with the temperature of annealing. X-ray diffraction spectra revealed the peaks of partially oxidized copper along with the peaks that correspond to ZnO matrix. Optical absorption spectra of the films revealed the characteristic plasmon resonance absorption peak of small Cu particles. The intensity of the plasmon resonance peak increased either on increasing the Cu content in the films or on increasing the annealing temperature.     

The Canadian contribution to the I.E.A. work on photoelectrolysis of water

This work was initiated in 1980 as the Canadian contribution to the International Energy Agency efforts to develop a method for hydrogen production by photoelectrolysis of water using semiconductor electrodes and sunlight as the source of energy. The work is derived from a combination of a CANMET in-house project and outside contracts. The contract work included preparation of semiconductor TiO₂ thick films by screen printing, TiO₂ thin films by sputtering, epitactic GaAs films, and preparation and PEC investigations of transition metal oxide semiconductors with the perovskite structure. The in-house work at CANMET included PEC studies on (1) screen printed TiO₂ films, (2) MoS₂ and (3) epitactic GaAs films. Investigations were conducted on charge transfer mechanisms, impedance and optical absorption properties and interfacial properties such as the zero point of charge, flat-band potentials, and distribution of charge and potential at the interface. Energy level diagrams were constructed. This paper presents a review of this work.     

Photoelectrocatalytic activity of spray deposited ZnO thin films against E. coli Davis

Abstract

Zinc oxide (ZnO) thin films have been deposited onto fluorine doped tin oxide coated glass substrates by economical chemical spray pyrolysis technique. Films were deposited using various quantities of solution from 50 to 200 cc (substrate temperature 400°C, solution concentration 0·2M) in order to achieve different thicknesses. The films were characterised by X-ray diffraction, SEM, AFM and optical absorption techniques. The films exhibit a hexagonal wurtzite crystal structure with preferred (002) orientation. Morphological study showed a smooth and nanocrystalline surface of ZnO films. Direct optical band gap energy of ZnO thin films is found to be 3·24 eV. The average transmission is of the order of 87% in the visible region. The photoelectrocatalytic response of the film against Escherichia coli Davis is studied using a specially designed photoelectrochemical (PEC) reactor module. Thickness and UV light dependent photoelectrocatalytic bactericidal properties of ZnO thin films have been investigated. It shows that biased 1·1 μm thick ZnO thin films with 2 mW cm^?2 UV light intensity give better bactericidal response compared to others. The relative percentage of killing of bacteria is 19·81% due to UV illumination, 52·71% due to UV illumination and passing over ZnO surface and 95·03% due to UV illumination and passing through PEC reactor with ZnO thin film after 2·5 h. It can be concluded that the ZnO thin film with photochemical reactor can be used in a water purifier to get bacteria free drinking water.     

Analysis of the influence of the gas pressure during the deposition of electrochromic WO3 films by reactive r.f. sputtering of W and WO3 target

Tungsten trioxide is the most accepted material for electrochromic devices. In the work thin films of WO₃ were deposited by reactive r.f. sputtering of both metallic (W) and ceramic (WO₃) targets to study the correlation between the electrochromic properties and the structures of the films. Samples were grown at different pressures of Ar+O₂ in order that the energy regimes of the sputtered particles on the condensing surface could be set either below or above the thermalisation diffusion limit. Lithium ions were intercalated in the films in an aprotic electrolyte and the colouring/bleaching behaviour as a function of the intercalated amount of lithium was detected in the 1st and 10th cycle. From these measurements, the electrochromic properties of the films were worked out. The optical and morphological characteristics were analysed respectively, by spectrophotometric and X-TEM measurements. The amount of water present in the films, detected by IR spectroscopy, turned out to be well correlated to the film morphology and also to the porosity.     

Preparation of thin films of polycrystalline CdSe for solar energy conversion I. A literature survey

pA survey is given of various ways of preparing thin semiconductor films, especially CdSe films, and with special emphasis on cathodic electrodeposition.     

The kinetic behaviour of ion injection in WO3 based films produced by sputter and sol–gel deposition: Part II. Diffusion coefficients

The use of AC impedance spectroscopy for kinetic study of the ion intercalation into WO₃ films is reviewed, and methods for extracting the diffusion coefficient of the ion diffusion process from AC impedance spectroscopy data are described. These are applied to several different electrochromic thin films, all based on tungsten oxide, and the electrochromic performance is correlated with the diffusion coefficient. The results are also compared with results of a previous paper which concentrated on modelling the voltage response of films coloured and bleached using constant current charge injection techniques. Several examples of non-ideal behaviour of the impedance spectra are observed, including depressed semicircles and evidence of two semicircles. A full discussion of these effects is given in a following paper.     

晶相形成对TiSi2薄膜光学性能的影响

通过常压CVD方法由SiH4和TiCl4直接在玻璃基板上成功制备了TiSi2薄膜,用XRD、FESEM、四探针测阻仪和分光光度计研究了薄膜的结构、形貌、电学和光学性能。研究表明TiSi2薄膜的晶相是面心正交型TiSi2;薄膜的电阻率直接由晶相的形成决定,受晶相颗粒大小和晶相致密度控制,TiSi2薄膜的电阻率随薄膜中TiSi2晶相含量的增大而下降。TiSi2薄膜在400~750nm范围的可见光区具有大致相同的透射比和最小的反射比,薄膜的透射比随薄膜厚度的增加而减小。在大于750nm的红外区,薄膜电阻率越小,对红外辐射的反射比越高,且随着波长增加至25000nm,TiSi2薄膜的反射比逐渐上升到约0.95。     

Visible and near infrared light absorbance of Ag thin films deposited on ZnO under layers by magnetron sputtering

The correlation among the electrical, optical and structural properties of Ag thin films was investigated. Low-emissivity (low-e) coatings consisting of glass/ZnO/Ag were deposited by magnetron sputtering. The ZnO thin films were deposited under various oxygen gas pressures to vary the property of Ag thin films deposited on them. When the ZnO thin films were deposited in low oxygen gas pressure, the Ag thin films deposited on the ZnO thin films exhibited low resistivity and smooth surface. Besides, it was found that the low-emissivity coatings with low visible and near infrared light absorbance were obtained using the low-resistive and smooth Ag thin films. It was concluded from the results that the light absorbance became low with decreasing the resistivity of Ag thin films in accordance with Drude's theory in the case where the Ag thin films exhibited sufficiently smooth surface. Furthermore, it can be considered that the surface plasmon polariton of Ag thin films had an influence on the optical property when their surface became rough. The optical absorbance of the low-e coatings should be determined as the result of the competition between two factors: resistivity and surface roughness of Ag thin films.     

Advances in Fe(VI) charge storage: Part II. Reversible alkaline super-iron batteries and nonaqueous super-iron batteries

Reversible thin film Fe(VI/III) cathodic charge/discharge storage in alkaline batteries is presented. Whereas ultra-thin (e.g., 3 nm) Fe(VI/III) films exhibit a high degree of reversibility, thicker films are increasingly passive toward the Fe(VI) charge transfer. An extended conductive matrix facilitates a 100-fold enhancement in charge storage for reversible Fe(VI/III) super-iron thin films. The thicker (100s of nanometers) films deposited on extended conductive matrixes composed of high-surface-area Pt, Ti, and Au can sustain high reversibility, which provides the possibility of using Fe(VI) salts as the cathode materials for rechargeable Fe(VI)/metal hydride batteries. Super-iron cathodes can also be discharged in conjunction with a Li anode in nonaqueous media. Optimization of the nonaqueous primary super-iron/Li batteries is summarized. Fe(VI) cathodes are also reversible in nonaqueous electrolyte systems. The charge/discharge process of super-iron cathodes in nonaqueous media involves both the lithiation/delithiation of the active mass and the reduction/oxidation of the Fe(VI/III), while only the thin film Fe(VI/III) electrodes can sustain high reversibility involving the full theoretical capacity in the nonaqueous batteries.     

Comparative study of Cu2ZnSnS4 film growth

We fabricated Cu₂ZnSnS₄ (CZTS) thin films using two different methods, spray pyrolysis and sulfurization of Cu-Zn-Sn metallic films. Spray pyrolysis was carried out under air ambient with modified ultrasonic spray system. Sulfurizations of metallic Cu-Zn-Sn films were done for stacked metallic films, Cu/Sn/Zn/glass, Cu/Sn/Cu/Zn/glass and Sn/Cu/Zn/glass, which were prepared by sputtering method in high vacuum chamber. The sprayed films were not observed to be grown well with good crystallinity, compared with CZTS films made by sulfurization of stacked metallic films. However, it was found that application of additional sulfurization to sprayed CZTS films induced great improvement of crystallinity to the level of the sulfurized metallic films. This implicates that spray pyrolysis with additional sulfurization is a good method for fabrication of CZTS films, especially as a low-cost fabrication technique. All CZTS films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and Raman spectroscopy measurements.