边坡倾倒变形的形成机制与影响因素分析

本文从边坡倾倒的变形特点出发,分析了倾倒变形的力学机制。在此基础上研究了结构面间距及力学参数对变形的影响。通过含有结构面的岩体的应力,位移以及屈服区的分布特点,讨论了反倾边坡的稳定性问题。     

鲁西南地区红层软岩水岩作用特征与工程应用

鲁西南各断块盆地中广泛分布有侏罗、第三系的紫红色、杂色砂砾岩,岩石呈固结半固结状态,遇水后发生渗透、膨胀、崩解和软化等失稳现象,对煤矿建井及煤矿开采带来重大威胁。本文采用X衍射仪、扫描电镜、压汞仪及液压伺服机等手段进行了红层软岩的物质组成、微孔结构及渗透性的试验研究,探讨了红层软岩的渗透机理及遇水失稳机理,并结合实例进行了工程应用分析。     

绞股蓝对明矾诱发遗传物质损伤的抑制作用

本次遗传毒理实验以绞股蓝为材料,以明矾为诱变剂,以小白鼠骨髓嗜多染红细胞的微核率和染色体畸变率作为DNA损伤的指标。结果含10%的绞股蓝饲料使明矾诱变的微核率从8.83±1.7‰降到3.67±0.52‰(P＜0.001),染色体畸变率从14.17±0.98%降至5.67±1.37%(P＜0.001)。表明绞股蓝对明矾诱发的DNA损伤具有明显的抑制作用,提示绞股蓝具有抗癌作用。     

五种补肾中成药物中微量铝分析

用Ａｌ－ＣＡＳ－ＯＰ－１０分光光度法测定了五种补肾中成药中铝含量。结果表明,五种中成药中铝含量有一定的差异。本实验结果为进一步研究铝与补肾中成药的功效关系提供了有用数据。     

分光光度法测定五种补肾中成药中铝的含量

用分光光度法测定蚁王壮力胶囊,三五神威丸、颐和春、强力生血宝,海马二肾丸五种补肾中成药中铝的含量。结果表明,五种中成药中铝含量有显著差异。其中以三五神威丸中铝的含量最高。     

Temperature-Dependent Imaginary Part of the Off-Shell Nucleon Self-Energy and the Second Order Correction of Real Part of the Nucleon Self-Energy

The imaginary part of the off-shell nucleon self-energy at finite temperature in nuclear matter, where the polarization and correlation contributions of exchanges of the meson are taken into account, is investigated based on Walecka's meson-nucleon model and thermofield dynamics. The second order correction of temperature-dependent real part of the nucleon self-energy is calculated in terms of the dispersion relation. The Schrodinger equivalent potential of relativistic microscopic optical potential of a nucleon at finite temperature in nuclear medium is also studied.     

联立方程组新解法测定小儿退烧片的含量

本文采用联立方程组新解法,不经提取分离,直接测定小儿退烧片中阿斯匹林和扑热息痛的含量。阿斯匹林和扑热息痛的平均回收率和变异系数分别为９９．９５％,１．７４％和１００．１％,０．９３％（ｎ＝１０）,方法简便、快速、准确。     

SCINTILLATION COUNTER ARRAY LOCALIZATION SYSTEM

A scintillation counter array localization system, i.e, scintillation counter hodoscope, was studied and made for selecting events and triggering the streamer chamber in 1980. With this facility the penetrating position of the charged particles can be determined and it can be used as a trigger counter too. As soon as the charged particles penetrated this array and other scintillation telescope, the generated coincidence signal triggers the control system of the streamer chamber with the time delay 74 ns.On the other hand, this system also has a ability of selecting charged particle number penetrating the counter array, thus, the streamer chamber is able to record the event with certain multiplicity.This hodoscope contains a 8×8 scintillation counter array. Each plastic scintillator (type ST401) has the dimensions of 40×5×0.6 cm³ and the type of photomultipliers used is GDB50. The array area is 40×40 cm².The fast electronics and data handling system were made by ourselves. The whole system works well during the test with the on-line microcomputer TRS-80 and is not expensive.     

IRREDUCIBLE REPRESENTATIONS OF THE GRADED LIE ALGEBRA SU(m/n)

Using the definition of irreducible tensor operators of the Lie group SU(n), we ive a method of calculating the irreducible representations of the graded Lie algebra U(m/n). We also give some simple examples of irreducible representations of U(3/2) and SU(m/n).     

THE MOMENTUM SELECTOR OF BIG CLOUD CHAMBER SET

Using a“preselection-register-operation for reselection”program,a selection systemof the Yunan big cloud chamber set used for cosmic ray reseach is projected andconstructed.A small on-line digital computation technigue is applied to the momentumselector of the system,and a special computation element is designed.According tothe deflection angle and momentum of a charged particle passing through the magniticfield,computation and logieal judgment can be done immediately for the track signal registered before.