三烷基氧膦（TRPO）辐射稳定性研究：辐解损失率的测定

三烷基氧膦是用于高放废液处理的萃取剂,本文试验了在辐照剂量为１×１０＾４Ｇｙ－１×１０＾６Ｇｙ时ＴＲＰＯ损失率。结果表明,１００％（Ｖ／Ｖ）ＴＲＰＯ在λ辐照剂量１０＾４Ｇｙ－１０＾６Ｇｙ变化时,辐解损失率为１．２％－１．６％;３０％（Ｖ／Ｖ）ＴＲＰＯ－煤油在辐照剂量１０＾４Ｇｙ－１０＾５Ｇｙ时,辐解损失率基本不变（０．３３％－０．３４％）,而在１×１０＾６Ｇｙ时增加到０．７７％。均低于磷酸三丁酯的     

Co（1，10－phen·）_3~（2＋）－KIO_4－鲁米诺化学发光体系与应用

本文研究了Ｃｏ（１，１０－ｐｈｅｎ·）３（２＋）配合物对ＫＩＯ４氧化鲁米诺所产生的强化学发光反应．以１，１０－ｐｈｅｎ·为配位体时，Ｃｏ（Ⅱ）的检出限为８×１０（－８）ｇ／Ｌ，工作曲线响应浓度范围在１×１０（－６）～１×１０（－４）ｇ／Ｌ，测定１×１０（－４）ｇ／ＬＣｏ（Ⅱ）离子的相对标准偏差为２．５％．配合物化学发光法检测啤酒、维生素Ｂ（１２）针剂中微量Ｃｏ（Ⅱ）可获得满意结果．     

胶束增敏荧光光度法测定螺内酯的研究

本文用荧光光度法对硫酸介质中螺内酯和十二烷基硫酸钠（ＳＤＳ）形成的胶束配合物的性能进行了系统研究。利用胶束的增敏增稳作用,提出了测定螺内酯的荧光光度新方法,方法线性范围宽,为１．４×１０－９－４．３×１０－６ｍｏｌ·Ｌ－１,灵敏度高,检出限为１．２×１０－９ｍｏｌ·Ｌ－１。应用本法于片剂中螺内酯的测定,结果满意     

胶束增效荧光光度法测定螺内酯的研究

本文用荧光光度法对硫酸介质中螺内酯和十二烷基硫酸钠（ＳＤＳ）形成的胶束配合物的进行了系统研究。利用胶束的增敏增稳作用,提出了测定螺内酯的荧光光度新方法,方法线性范围宽,为１．４×１０＾－９－４．３×１０＾－６ｍｏｌ·Ｌ＾－１,灵敏度高,检出限为１．２×１０＾－９ｍｏｌ·Ｌ＾－１,应用本法于片剂中螺内酯的测定,结果满意。     

吩噻嗪卤代衍生物的荧光研究

本主要研究了３－溴－Ｎ－乙基吩噻嗪（Ｂｒ－Ｐ）在各种酸度、增敏溶剂、感光效应等条件下的荧光变换现象,并确定了最佳的发光体系。方法简单、准确可靠,其线性范围为１×１０＾－７￣１×１０＾－４ｍｏｌ／Ｌ,检出限为１×１０＾－８ｍｏｌ／Ｌ,ＲＳＤ〈２．８％。     

不除氧条件下环糊精诱导室温磷光法测定喹啉

在不除氧条件下，１０ｍＬ含喹啉／β－ＣＤ溶液中只需加入１５μＬ１，２－二溴丙烷（ＤＢＰ）作重原子微扰剂，就能产生强而稳定的室温磷光信号。最大λｅｘ／λｅｍ＝２７３／４９６ｎｍ。喹啉浓度在５．０×１０＾－７￣５．０×１０＾－５ｍｏｌ／Ｌ，５．０×１０＾－４ｍｏｌ／Ｌ，两段三个数量级范围与室温磷光信号有良好的线性关系，最低检测限７．４×１０＾－８ｍｏｌ／Ｌ。本体系的特点是ＤＢＰ用量少，从而减少了因过量     

用于等离子体电位测量的电容探针和发射探针

本文给出了发射探针和电容探针测量等离子体电位的实验和方法。发射探针采用直流功率加热，并在较强电子发射条件下运行（Ｉ_（ｅ０）／Ｉ_（ｅ０）＞１）。电容探针表面二次电子发射系数δ≥１。本文对发射探针的电子发射性能、工作电流、电容探针的输入、输出电压关系进行了标定实验。得到了电容探针的校准系数分别为３×１０（－３）、５×１０（－４）。实验给出了ＭＭ－４会切中心等离子体电位Ｖ_（ｐ４）＝－８２±９－１２２±１２Ｖ；ＭＭ－４Ｕ东、西会切中心等离子体电位分别为Ｖ_（Ｐ４ｕ１）＝－５２．９±３．２Ｖ，Ｖ_（Ｐ４ｕ２）＝－６２±３．２Ｖ。     

一种新型尾式卟啉吡啶季铵盐对锌离子显色反应的研究

本文研究了一种新型尾式卟啉吡啶季铵盐５－「４－（４－吡啶丁氧基）苯基」－１０,１５,２０－三（４－氯苯基）卟啉溴化物与锌的反应条件。ＰＨ＝１０．０,在吡啶存在下于沸水浴中加热１５ｍｉｎ,其与Ｚｎ＾２＋形成１：１配合物,其最大吸收波长位于４２８．６ｎｍ,在此条件下试剂的最大吸收波长在４１８．２ｎｍ,相差１０ｎｍ,配合物摩尔吸光系数４．６４×１０＾５Ｌ·ｍｏｌ·ｃｍ＾－１,锌在０－１．２μｇ／１０ｍＬ     

光谱—电化学法对铁,铅的测定方法研究

在０．１５ｍｏｌ／ＬＨＡｃ－ＮＨ４Ａｃ支持电解质中，使用０．１ｇ／Ｌ的邻菲罗啉（ｏ－Ｐｈｅｎ）采用经典极谱仪测定其离子络合物吸附波，分光光度法测定铁离子，检出下限分别达到：铅离子为１．５０×１０＾－１０ｍｏｌ／Ｌ，铁离子为３．５８１×１０＾－７ｍｏｌ／Ｌ。该方法在回收率为９９．２％－１００．４％之间，具有较好的选择性。     

高TcBOLOMETER

章给出了高Ｔｃ超导红外探测器的理论分析；器件设计。并报道了用ＧｄＢａ２Ｃｕ３Ｏ７－ｘ薄膜制备的红外探测器的实验结果。得到的最好结果是噪声等效功率ＮＥＰ（５００，１０，１）＝１．４×１０＾－１１ＷＨｚ＾－１／２；探测率Ｄ＾＊（５００，１０，１）４．２×１０＾９ｃｍＨｚ＾１／２Ｗ＾－１；响应度Ｒｖ＝１０６５Ｖ／Ｗ。     

Pressure effect on the melting point of alkali metals

The mean-square displacement of alkali metals is studied theoretically using our local Heine-Abarenkov-type model potential in the perturbational scheme. The temperature-dependent mean-square displacement of alkali metals decreases as function of the compressed volume. Lindemann's criterion for melting x_m, which is defined as the ratio of two times the root-mean-square displacement to the nearest-neighbour distance, is found to be nearly constant for five alkali metals. The volume effect on the melting temperature of alkali metals is studied by keeping x_m constant. The obtained melting curve increases as function of the compressed volume and are qualitatively in good agreement with the observed tendency for alkali metals.     

阜新褐煤中腐植酸的提取

以阜新褐煤为原料,采用稀碱法提取腐植酸（HA）并通过红外光谱分析腐植酸的基本结构,为今后研究腐植酸的基本结构提供一定参考。实验主要考察了碱液浓度、反应温度、反应时间对腐植酸的提取率的影响,结果显示,用2.0%N aOH在50℃下反应75m in可得到最大提取率为13.696%。     

On the origin of atomistic mechanism of rapid diffusion in alkali halide nanoclusters

To elucidate the atomistic diffusion mechanism responsible for the rapid diffusion in alkali halide nano particles, called Spontaneous Mixing, we execute molecular dynamics simulations with empirical models for KCl-KBr, NaCl-NaBr, RbCl-RbBr and KBr-KI. We successfully reproduce essential features of the rapid diffusion phenomenon. It is numerically confirmed that the rate of the diffusion clearly depends on the size and temperature of the clusters, which is consistent with experiments. A quite conspicuous feature is that the surface melting and collective motions of ions are inhibited in alkali halide clusters. This result indicates that the Surface Peeling Mechanism, which is responsible for the spontaneous alloying of binary metals, does not play a dominant role for the spontaneous mixing in alkali halide nanoclusters. Detailed analysis of atomic motion inside the clusters reveals that the Vacancy Mechanism is the most important mechanism for the rapid diffusion in alkali halide clusters. This is also confirmed by evaluation of the vacancy formation energy: the formation energy notably decreases with the cluster size, which makes vacancy formation easier and diffusion more rapid in small alkali halide clusters.     

An in-situ method for time-resolved sodium release behaviour during coal combustion and its application in industrial coal-fired boilers

To mitigate the slagging, fouling and high-temperature corrosion problems caused by alkali metals during coal combustion process, measurement of time-resolved alkali metals release is very important. The paper proposed an in-situ approach for measuring sodium (Na) release in coal combustion by Flame Emission Spectroscopy (FES). Through the analysis of spontaneous emission spectra and a calibration procedure, the concentration of gas phase Na, temperature and thermal radiation can be obtained. Firstly, experimental measurement of Zhundong coal particles burning in a flat flame burner was done. Two kinds of Zhundong coal with similar proximate and ultimate analyses, but different ash composition were used. The Na-release history measured by FES was compared with that by LIBS. Results showed that the Na-release at the devolatilization, char, and ash stages can be distinguished by FES. The higher Si/Al content in ash can suppress the Na-release at the ash stage. Moreover, FES method was extended to the measurement of Na-release in four industrial boiler furnaces of two Zhundong coal-fired power plants. Results showed the Na-release measured by FES can reflect the change of fuel and load, and both temperature and thermal radiation play key roles in Na-release in coal combustion.     

直接膨胀供液制冷系统性能可视化研究

对直接膨胀供液制冷系统的传热性能进行了理论分析,建立了相应的数学模型.在保温体内对-5℃、0℃、5℃、10℃、15℃、20℃的工况进行了实验.分别测得制冷系统的压力、风量、制冷量、及功耗等技术参数,得到在环境温度一定的情况下的传热系数和制冷量的变化关系.并对蒸发器内制冷剂流动状态进行观察.实验表明:直接膨胀供液制冷系统...     

The influence of quantum interference effects on the resonance fluorescence spectra of a degenerate three-level atom

The resonance fluorescence spectra of a degenerate three-level atom of the V-type in the field of an intense monochromatic wave with an arbitrary polarization composition are investigated. Analytical expressions are derived for the resonance fluorescence spectra, and the angular distribution of spontaneous fluorescence of atoms is analyzed for the D-line emitted by vapors of alkali atoms. It is shown that the number of lines in the spectrum may decrease in the case of the linear polarization of spontaneous radiation. The radiation relaxation operator is obtained for the D-line of alkali metals in the case when an atom is near the metal surface. Interference effects for such systems are analyzed.     

超声-硝酸联合法提取褐煤腐植酸工艺

实验考察了超声、硝酸预处理、酸化程度、碱液浓度、反应温度、液固比、反应时间等对腐植酸提取率的影响,并通过正交设计选择最佳预氧化条件和褐煤腐植酸的最佳提取条件.结果表明;超声硝酸联合氧化法提取腐植酸的最佳条件为：超声频率80kHz,氧化温度50℃,硝酸液固比（mL/g）为5∶1,氧化时间90min,硝酸浓度1.5mol/L.     

An equation of state and non-linear parameter from sound velocity measurements for liquid alkali metals

In the present paper, an equation of state has been obtained in case of liquid alkali metals like Na, K, Rb and Cs from sound velocity measurements. The theory developed gives very good agreement for both the sound velocity and the volume as a function of pressure at different temperatures in these liquid alkali metals. Further, the variation of non-linear parameter,B / A, as a function of pressure and temperature is also studied.     

Electron work function in alloys with alkali metals

The electron work function in alloys and compounds containing alkali metals, which are of interest for the designing of new photocathode materials and further development of the theory of electron emission, is studied. It is shown that a number of applied and theoretical issues in this field are poorly understood. These are the temperature and concentration dependences of the electron work function in binary metallic systems, the surface activity of components that are inactive in alloys with alkali metals, and some others.     

Susceptibility and electric dipole in metal C 60 compounds

The permanent electric dipole moment of metal atom-C₆₀ compounds is measured. A column (alkali) and a row (transition metals) of the periodic table are systematically investigated. Most of the experimental results are obtained at high temperature when the atom is mobile on the C₆₀ cage. For a given example (NaC₆₀), the dipole moment is also measured by a different method at low temperature and both results are consistent. For alkali, the results are compared to ab initio calculations. A good agreement is obtained, both for absolute values and for the evolution of the bonding in the alkali column. For transition metals, the relative values of the dipole moments are in qualitative agreement with the ionic character of the compounds.