空调蓄冷及气体水合蓄冷技术

本文论述了蓄冷空调对电力主财峰，平衡电网和节能的意义，比较分析各种蓄冷方式的技术经济性，着重介绍了气体水合蓄冷技术的研究结果及其蓄冷空调系统的方案设计与经济性评估方法，论证了气体水合蓄冷空调的技术可行性，并指出了发展蓄冷空调技术应采取的电力负载管理策略及大规模推广应用该技术的前景。     

蓄冷空调的经济性研究

本文建立了蓄冷空调经济性研究的数学模型,通过对一实例的经济性分析,得到了蓄冷率、蓄冷策略、电价结构及蓄冷空调的种类对蓄冷空调经济性的影响关系.     

蓄冷空调系统经济分析与比较

本文建立了常规空调系统和蓄冷空调系统经济分析模型,半利用该模型分别对水蓄冷系统、冰蓄冷系统和共晶盐蓄冷系统的经济效益进行了计算了分析与比较,其结果可供有关决策部门参考。     

蓄冷空调系统经济分析与比较

本文建立了常规空调系统和蓄冷空调系统经济分析模型,并利用该模型分别对水蓄冷系统,冰蓄冷系统和共晶盐蓄冷系统的经济效益进行了计算分析与比较,其结果可供有关决策部门参考。     

深海适冷菌Pseudomonas sp.SM9913的适冷生长机制探讨

研究了温度对适冷菌Pseudomonas sp.SM9913的生长与适冷蛋白酶合成的影响，结果表明，P.sp.SM9913的最适生长温度为15℃，最适产酶温度为10℃，是一典型的适冷菌。P.sp.SM9913分泌的适冷蛋白酶在低温下与底物的亲和力增大，反应的活化能降低，表明在低温下较中温蛋白酶有更高的催化效率。深海产适冷蛋白酶的适冷菌P.SM9913可能是通过提高菌株在低温下的生长速率和增加酶分子在低温下的催化效率两条途径增加低温环境中蛋白质的分解效率，从而以适应低温环境。     

相变蓄冷技术在生鲜产品冷链中的研究进展

目的 分析相变蓄冷材料的研究现状,以及在生鲜产品冷链运输领域中的应用进展,为相变蓄冷技术在生鲜产品冷链上的应用及发展提供参考。方法 阐述相变蓄冷技术的基本原理,及各种相变蓄冷材料性能的调控方法,总结近年相变蓄冷技术在生鲜冷链运输中的研究方向。结论 相变蓄冷箱是未来的研究重点,相变蓄冷技术在中短途冷链运输领域中应用广泛。为满足我国绿色化、节能化、标准化的冷链进程需求,相变蓄冷技术还需向更深入、更广泛的方向发展。     

蓄冷空调小型化研究

本文简要介绍了蓄冷空调国内外研究现状，从技术角度阐述了小型化的可行性和所存在问题，并就小型蓄冷空调在我国的发展提出建议。认为随着蓄冷介质、系统优化控制、换热设备等方面技术的不断提高，小型蓄冷空调的开发应用已成为可能，并有着广泛的市场前景。     

空调蓄冷及固体吸附蓄冷技术

介绍了目前空调工程中常用的蓄冷技术及其各自特点,分析了固体吸附蓄冷技术及其应用.     

从第七届国际急冷材料会议看急冷技术的研究现状及发展趋势

本文简要介绍了第七届国际急冷材料会议的概况,论述了急冷技术的研究现状及其发展趋势,并提出了发展我国急冷技术的一些建议。     

Estimation of Parameters of Universal Distribution of Moments of Failure of Products

A method is proposed for estimating the parameters of a mixture of exponential and Weibull distributions for which the accuracy of preliminary estimates obtained by graphical analysis is refined in accordance with the criterion of maximum likelihood. The efficiency of the proposed method is supported by the results of statistical modeling.     

Evaluation of optical properties of highly scattering media by moments of distributions of times of flight of photons

A novel method for the determination of the optical properties of tissue from time-domain measurements is presented. The data analysis is based on the evaluation of the first moment and the second centralized moment, i.e., the mean time of flight and the variance of the measured distribution of times of flight (DTOF) of photons injected by short (picosecond) laser pulses. Analytical expressions are derived for calculation of absorption and of reduced scattering coefficients from these moments by application of diffusion theory for infinite and semi-infinite homogeneous media. The proposed method was tested on experimental data obtained with phantoms, and results for absorption and reduced scattering coefficients obtained by the proposed method are compared with those obtained by fitting of the same data with analytical solutions of the diffusion equation. Furthermore, the accuracy of the moment analysis was investigated for a range of integration limits of the DTOF. The moment analysis may serve as a comparatively fast method for evaluating optical properties with sufficient accuracy and can be used, e.g., for on-line monitoring of optical properties of biological tissue.     

Assessment of intakes of mixtures of radionuclides

Australia has several uranium mines and a large number of mineral sand mines, with associated processing facilities. Exposures resulting from these mining and processing operations usually involve intakes of mixtures of radionuclides. This work describes the development of a suite of first order, linear compartment models, based on the ICRP Publication 66 respiratory tract model, and an analytical solution to the decay equations, for assessing the consequences of such intakes. The computer programs based on these models directly compute excretion, organ retention and organ and whole-body doses for intakes of either single radionuclides or any mixture of radionuclides belonging to the same radioactive decay chain. The intake can be via inhalation, ingestion or injection, and can be acute, chronic or of limited duration. The starting concentration and degree of secular (dis)equilibrium can be specified for each radionuclide. No assumptions need to be made about the relative magnitudes of the radioactive half-lives of the different nuclides.     

Estimation of potentialities of methods of summation of direct measurement errors

Conventional methods for summation of direct measurement errors are considered. Conditions under which these methods provide consistent results are stated. It is proposed to utilize for characteristic of the total error, its interval estimator or the half-sum of the value obtained by adding up its arithmetic and geometric random errors.Translated from Izmeritel'naya Tekhnika, No. 4, pp. 10–12, April, 1995.     

卧式金属罐容量的测量结果不确定度

本文根据多年的实践检定经验 ,参照JJF1 0 59- 1 999《测量不确定度评定与表示》以及《测量不确定度表达 1 0讲》 ,对卧式金属罐容量的测量结果不确定度进行了评定。     

盐酸浓度不确定度的评估

通过对盐酸浓度标定的过程分析，找出影响结果的各个分量，进行不确定度的评定，按照计量技术规范给出标准的表示法。     

Analysis of the rate of propagation of the wave of change of boiling modes

An approximate analytical expression is derived for the velocity of the front of the wave of change of boiling modes on a rod and on a plate. The impact of the Thomson effect and of the heater orientation in the gravity field is included. Adequate agreement is demonstrated between the derived relations and experimental data.