γ射线脉冲星的辐射光度

本文以极冠模型为基础,计算了脉冲星γ射线辐射光度,指出对不同的脉冲星必须考虑辐射立体角和可见辐射区对观测光度的影响．考虑了这些观测效应后,计算的光度和观测值基本符合．预言了一些可能的γ射线脉冲星,并对其性质进行了研究．     

High efficiency induction of callus and regeneration of sporophytes ofLaminaria japonica (Phaeophyta)

This study on the effects of ultrasonic treatment on female gametophytes ofLaminaria japonica showed that:

1. 1.

   Ultrasonic treatment had shortening effect on filaments of female gametophytes. Within certain period of time, the average length of filamentous female gametophytes was shortened.

2. 2.

   Ultrasonic treatment had emptying effect on cells. The number of empty cells increased with time of treatment. Ultrasonic treatment had harmful effect on cells.

3. 3.

   Ultrasonic treatment could break down cell walls. The combination of frequency of 20 kHz, output of 15 W, 40 s and 60 s of treatment was best for this purpose. After ultrasonic treatment, the regeneration of female gametophytes into sporophytes was effected. Female ganetophytes could not recover after too long period of treatment.

     

青海滩间山金矿床成矿模式

滩间山金矿床位于柴达木地块北缘,产于中元古界蓟县系万洞沟群碳质糜棱片岩和华力西晚期侵入岩中。矿床形成与柴北缘区域地壳多阶段演化和多次成矿作用有关,属多因复成矿床。矿床是在热水沉积、区域变质、热变质等预富集的基础上,与区域绿片岩相韧性剪切带的退化演化同步,经历了脆韧性、韧脆性和脆性剪切变形成矿阶段的演化并遭受华力西晚期侵入岩浆活动的叠加改造形成的。成矿物质来自容矿黑色岩系和华力西晚期侵入岩。     

Burst strain disturbance — A new test study on fracture precursor

A multi-functional high-frequency seismometer, a new instrumental system, is used for recording multi-point strain variations of rock samples in the process of fracture development. The results indicate that strain in each point appears burst disturbance synchronously besides a tendency variation before main fracture. The burst disturbance could probably be one of the short-impending precursors before great earthquake.     

The Variance of Mango‘s Light—Hydrocarbon Parameter K

The analyses of light hydrocarbons in oils from the Tarim Basin show that the Mango‘s parameter K is about unity except those oils trapped in the eastern part of the Tazhong (Central Tarim)Fault Uplift,The regular variance of K may indicates the accumulation and admixture of the oil populations in the eastern part of the Tazhong Fault Uplift.     

含硬包体试样在破裂孕育过程中波速场的变化

含硬包体混凝土试样在底面支撑侧面双轴加压至主破裂的情况下波速场的变化图象为：加压初期,试样上的纵波平均速度在４１７５～４６１５ｍ／ｓ之间变化,随着压力升高,出现小于４１７５ｍ／ｓ的低速区,但范围甚小,位置在两个包体之间。随后出现大于４６１５ｍ／ｓ的高速区,范围大致与包体位置一致。随着σ１的增加,低速区在逐渐变大,高速区逐步减小后又重新变大,高速区与低速区在平面上相互重叠,在空间上看,高速区被低速区包围着。临近主破裂时,低速区变小并逐步形成条带,高速区也变小,主要集中在靠近未来出现破裂的一个包体位置上。最终的破裂面出现在此高速区与低速条带交界附近,包体也局部破裂了。     

淮北煤田上石盒子组花斑泥岩中的粘土矿物研究

淮北煤田上石盒子组花斑泥岩中的粘土矿物组合以高岭石为主,伊利石次之。高岭石的结晶度较好。伊利石均表现有混层现象。研究表明,花斑泥岩经历了较强的成岩作用。     

甘肃敦煌地区太古宙孔兹岩系特征

本文根据甘肃敦煌地区广泛出露在太古宙TTG杂岩中的一套副变质岩系的岩石组合、典型矿物组合、变质相特征和岩石化学特征的分析,认为它们是一套中深变质的碎屑岩-泥质岩-泥灰岩-碳酸盐建造,其中夹有少量的变质基性火山岩。原岩形成于具有基性火山作用的活动大陆边缘滨海-浅海环境。经过太古宙的区域高角闪岩相变质作用,形成孔兹岩系。     

环境水土对重要建筑材料的腐蚀作用

从建筑材料和水土中活跃成分的化学性质出发,讨论环境水土成分对重要建筑材料的腐蚀的机理及其评价的有关问题。     

水资源持续利用系统规划

基于可持续发展概念,构思了一个新型水资源系统持续利用规划的理论框架。其中包括:现行水资源系统规划(含环境影响评价)的缺陷、新型水资源系统规划的指导思想和原则、不同层次规划的任务与内容、坝址及水库容量选择,以及水资源持续利用的综合评价。