氧化铁浆液脱硫的实验研究与理论分析

本文实验研究了氧化铁浆液在酸性环境下脱除烟气中的二氧化硫气体。实验在一自制的脱硫塔中进行。通过燃烧液化石油气来产生烟气,将氧化铁的超细粉加入水中作为脱硫介质。实验中研究了二氧化硫初始浓度、水气比对脱硫效率的影响。从实验结果可以看出,脱硫率随着水气比的增加而增大;随二氧化硫的初始浓度的增加,其脱硫率呈降低趋势。在文中同时分析了氧化铁浆液的脱硫机理和此方法脱硫的优点以及目前存在的问题。     

柱形分布的电荷产生的电势

将无限长线电荷看成二维平面上的一个“源”,利用电势叠加原理计算了无限长柱形均匀分布的电荷产生的电势.这些柱体的截面电荷分布包括可解析表示和不可求解表示两种,后者可以通过数值计算给出结果.因此这种方法实际上可以计算任意截面柱形电荷分布的电势.通过计算,展示了各种电荷分布所产生电场的特性和共同特征.     

超宽谱微波急性辐照对大鼠外周血血象的影响

 采用90 kV/m低剂量和180 kV/m高剂量超宽谱微波全身一次辐照大鼠10 min，于照后5个时相点取静脉血进行血常规参数测定。结果发现：低剂量微波辐照后0 h WBC总数就开始升高；高剂量微波辐照后0 h WBC总数明显升高，辐照后12和24 h，WBC总数下降，在188 h时WBC总数又显著升高。RBC,HGB,HCT和RDW-CV在两个剂量辐照后24 h内升高，至辐照后188 h，降至正常水平。红细胞的MCV,MCH在两个剂量的微波辐照后无显著变化。低剂量微波辐照后3,12,24 h，MCHC明显低于正常对照值，高剂量微波辐照后仅在照后24 h内MCHC明显低于正常对照值。在两个剂量辐照后,血小板总数显著高于正常对照值。辐照后24 h和188 h PDW均显著低于正常对照值；MPV,P-LCR在两个剂量辐照后188 h显著低于正常对照值。实验结果表明:低剂量和高剂量的微波辐照均可造成机体类似急性炎症性反应，对红细胞形态和功能影响较小，可使骨髓生成和释放红细胞及血小板增加。     

About Regularity of Collections of Sets

The paper continues investigations of stationarity and regularity properties of collections of sets in normed spaces. It contains a summary of different characterizations (both primal and dual) of regularity and a list of sufficient conditions for a collection of sets to be regular.     

Chaotic oscillations and noise transformations in a simple dissipative system with delayed feedback

We analyze the statistical behavior of signals in nonlinear circuits with delayed feedback in the presence of external Markovian noise. For the special class of circuits with intense phase mixing we develop an approach for the computation of the probability distributions and multitime correlation functions based on the random phase approximation. Both Gaussian and Kubo-Andersen models of external noise statistics are analyzed and the existence of the stationary (asymptotic) random process in the long-time limit is shown. We demonstrate that a nonlinear system with chaotic behavior becomes a noise amplifier with specific statistical transformation properties.     

An axially symmetric contact problem for a half-space with an elastically reinforced cylindrical cavity

We consider the pressure of a plate on a half-space with a round cylindrical cavity. The surface of the cavity is reinforced by elastic elements that are modeled by very general operators. The problem is reduced to a Fredholm integral equation of second kind. A detailed study is made of the case of reinforcement described by the Winkler law. An approximate solution is obtained in the form of the asymptotics with respect to the radii of the plate and the cavity.Translated fromDinamicheskie Sistemy, No. 6, 1987, pp. 80–85.     

Investigation of radical decay mechanisms in a glow-discharge plasma in carbon tetrafluoride

Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 54, No. 6, pp. 1004–1010, June, 1991.     

光学三维成像实验系统

建立光学投影层析三维成像系统,该系统包括光学成像、图像采集、断层重建及三维显示,重建算法为滤波反投影算法.实验结果表明:利用该系统得到的重建图像与样品的形状吻合,重建结果边缘清晰,伪迹较小.     

二维光子晶体中极化原子自发辐射的开关效应

利用二维光子晶体的各向异性，结合原子的偶极辐射能量分布特点，提出通过改变原子的极化方向，可以使其自发辐射寿命显著地缩短或者延长，实现开关控制．发现在某些空间位置上，极化原子寿命的改变可高达33倍．