射频识别技术在军品包装上的应用探讨

射频识别(RFID)技术的正在得到越来越广泛的应用.就射频识别技术在现代军品包装中的发展、应用和技术优势进行了探讨,并对该技术应用的前景进行了分析,指出了该技术应用的重大意义.     

土地测绘中GPS技术的应用

GPS技术的发展以及应用使得其逐步的被应用到各行各业中,其中土地测绘中GPS技术的应用成为了现代土地测绘的特点,并展现出了其应有的效益。文章首先针对GPS技术的原理进行了分析,并介绍了该技术目前在土地测绘中的现状,详细的剖析了该技术的应用,并对其技术特点进行了介绍。     

跳频技术在超短波无线通信中的应用

作为一种扩频通信技术,跳频技术拥有许多技术优点,非常适合应用于超短波无线通信。本文着重介绍了跳频技术在超短波无线通信中的应用,分析了这一应用的技术优点和所涉及的关键技术,最后阐述了这一技术的应用现状及未来的发展趋势。     

房屋结构托换技术应用研究

针对当前房屋改造实旌过程中出现的工程量大、不易施工的现象,本论文对房屋结构托换技术进行了分析探究,首先简单分析了当前房屋结构托换技术的应用现状,并在此基础上详细探讨了房屋结构托换技术的应用,给出了结构托换技术的关键和技术措施,并列举了两个典型结构的托换技术施工工艺及步骤探讨了房屋结构托换技术的应用,对于进一步提高房屋结构托换技术应用水平具有一定借鉴意义。     

地源热泵技术的应用现状及展望

本文介绍了地源热泵技术及其应用情况,并指出了地源热泵技术在国内外的应用现状及最新动态,同时对今后地源热泵技术应用进行了展望.     

黑龙江省经济发展背景下技术应用人才需求预测

主要从2003-2009年度技术应用人才需求分析入手,构建了灰色GM(1,1)技术应用人才需求预测模型;依据2003-2009年黑龙江省技术应用人才需求数据资料,对黑龙江技术应用人才需求预测模式进行了预测,并对预测结果进行了检验。     

RFID技术的电子票证解决方案与应用

从当前技术及票证种类入手,阐述了票证技术现状,并和现存的证件技术进行比较。接下来阐述了射频识别技术(RFID)在电子证件的典型应用方案,通过原理图、实现功能等方面介绍。结合RFID电子票证的应用实例详细阐述了RFID电子票证解决方案的应用。量后总结了此类技术的应用前景。     

浅议电气工程中自动化技术的运用

随着时代的发展,很多新技术不断兴起,国家电网建设也不断改进发展,自动化技术在电气工程中的应用也越来越广泛。本文分析了自动化技术在电气工程中的应用以及当前的技术热点,探讨了自动化技术应用的未来发展趋势。     

井下有轨运输自动化无人驾驶技术分析

为了发挥5G技术的优势作用,实现井下有轨运输自动化无人驾驶技术的应用目标,文章应用调查分析法、文献资料分析法、观察法等改造了电机车技术、矿车技术、装卸矿技术、转辙机（道岔）技术、控制设备技术、主控系统技术、料位检测技术的应用,从而实现了井下有轨运输自动化无人驾驶技术的应用目标,不仅增强了电机车在矿井传输信号的可靠性和装卸矿的精准化,而且显著提升了电机车作业的安全水平。     

信息通信技术在物联网中的应用

物联网是在互联网快速发展的基础上产生的一种新生事物,当前很多现代化科技技术都在物联网中获得了较好的应用,信息通信技术就是其中之一。信息通信技术与物联网的有机融合极好地促进了现有经济体制的稳定发展,使物联网技术应用得到了进一步提高。在此背景下,该文对信息通信技术在物联网中的应用进行了介绍和分析,并就信息通信技术的应用进行了展望。     

Gender differences in publication productivity in psychology in India

An analysis of gender differences in psychology in India provides quantitative and qualitative assessment of R&D output contributed by psychologists with the indication of the trend of growth, skewness, relatedness, co-authorship pattern of productivity.     

Metrology in Chemistry in Germany

The system for Metrology in Chemistry in Germany is described. At the national standards level, a network of high-level chemistry institutes coordinated by the national metrology institute, PTB, provides the primary references for chemical measurements. A dissemination mechanism employs chemical calibration laboratories accredited within the framework of the German Calibration Service (DKD). They act as “multipliers” between the national standards level and the user level by providing the user with calibration means which are traceable to the SI via national standards. Traceability structures in clinical chemistry, electrochemistry, elemental analysis and gas analysis are described     

Natural radioactivity in drinking water in private wells in Finland

Natural radioactivity in drinking water was determined in population-based random study of 472 private wells. The mean concentrations of (222)Rn, (226)Ra, (234)U, (238)U, (210)Pb and (210)Po in drilled wells were 460, 0.05, 0.35, 0.26, 0.04 and 0.05 Bq l(-1), and in wells dug in the soil were 50, 0.016, 0.02, 0.015, 0.013 and 0.007 Bq l(-1), respectively. Approximately 10% of the drilled wells exceeded a radon concentration of 1000 Bq l(-1) and 18% a uranium concentration of 15 microg l(-1). The mean annual effective dose from natural radionuclides for a drilled well user was 0.4 mSv and 0.05 mSv for a user of a well dug in the soil. The effective dose arising from (222)Rn was 75% of the total of all natural radionuclides for drilled well users. As regards long-lived radionuclides, (210)Po and (210)Pb caused the largest portion of the effective dose. The dose arising from (238)U, (234)U and (226)Ra was only 8% of the total of all natural radionuclides.     

Natural radioactivity in drinking water in private wells in Finland

Radiation Protection Dosimetry     

Radioactivity in building materials in Iraq

Activity concentrations of (226)Ra, (232)Th and (40)K in 45 samples of different building materials used in Iraq were measured using gamma-spectroscopy system based on high-purity germanium detector with an efficiency of 40 %. Radium equivalent activity, air-absorbed dose rate, annual effective dose, external and internal hazard indices and alpha index due to radon inhalation originating from building materials were measured to assess the potential radiological hazard associated with these building materials. The activity concentrations of the natural radionuclides (226)Ra, (232)Th and 40K were found to range from below detection limit (BDL) to 223.7 ± 9, BDL to 93.0 ± 3 and BDL to 343.1 ± 12, respectively. Values of average radium equivalent activity, air-absorbed dose rate, indoor and outdoor annual effective doses, external and internal hazard indices and alpha index ranged from 6.5 to 124.9, 16.2 to 89.5 (nGy h(-1)), 0.08 to 0.44 mSv, 0.02-0.11 mSv, 0.09 to 0.53, 0.13 to 0.69 and 0.03 to 0.62, respectively. These values indicate a low dose. Therefore, the building materials used in the current study are quite safe to be used as building materials.     

Optische in situ Schichtdickenmessung in Bedampfungsanlagen. Optical in situ film thickness monitoring in coating systems

Optical film thickness monitoring is more precise than crystal monitoring. The optical measurement makes use of the fact that the intensity of a monochromatic light beam which is reflected on a film will change periodically with increasing film thickness. The measurement is performed at an exchangeable test glass that is positioned beside the substrates and is therefore coated in the same way as the substrates. The accuracy of cut‐off is achieved by a “fit” of a theoretical curve shape to the measured values. Order filters are used to ensure that, at a certain wavelength, higher deflection orders do not influence the measurement when a monochromator grating is used.