回填区基础灌柱桩施工及检测

本文简要介绍海上回填块石区摩擦灌注桩施工方法与质量检测。     

沿岸流与海带养殖关系的研究 Ⅱ、流速对海带生长的影响

本研究的第一部分,报告了山东省日照县石臼所湾海带养殖区的沿岸流的研究结果,提出了该海区海带养殖筏合理设置的措施。经过二年的生产证明,合理设筏(依主流轴向顺流设筏)后,改善了养殖区的流水条件,促进了海带的生长,减轻了风浪灾害,使该海区海带的产量得到提高。1980—1981年我们又在山东省荣成县俚岛湾,进行     

沿岸流与海带养殖关系的研究：Ⅱ、流速对海带生长的影响

本研究的第一部分，报告了山东省日照县石臼所湾海带养殖区的沿岸流的研究结果，提出了该海区海带养殖筏合理设置的措施。经过二年的生产证明，合理设筏(依主流轴向顺流设筏)后，改善了养殖区的流水条件，促进了海带的生长，减轻了风浪灾害，使该海区海带的产量得到提高。1980—1981年我们又在山东省荣成县俚岛湾，进行了不同流速条件下的海带生长与产量的定量试验，本文即报告此项研究的结果。     

海带“单海1号”新品种的选育——用海带单倍体材料培育新品种

海带是我国重要的养殖海藻。选育海带新品种进行养殖,可以提高产量和质量。60年代初期,鉴于当时所养殖的海带是杂种,山东海洋学院和科学院海洋研究所有关同志合作,对海带进行了遗传育种研究。他们采取的育种方法是从自然种群中选出个别优良个体,进行单棵采孢子,自交,然后从后代中选优培育,经过连续若干代的自交和定向选     

Solvothermal Synthesis of CdSxSe1-x Nanorods by Polymer Gel-Controlled Growth Strategy

Alloyed ternary CdSxSe1-x nanorods have been synthesized by the thermal treatment of Cd2 -dispersed polyethylene glycol 2 000 gel (PEG 2000) with ethylenediamine solution of sulfur and selenium in a sealed system at 180 ℃ for 24 h, in which the ratio of S to Se in the nanorods was controlled by adjusting the relative amounts of the starting materials. Based on the results of experiments, it is found that the CdSxSe1-x nanorods were also synthesized with several sulfur sources by the method. X-ray diffraction (XRD) shows that the alloyed ternary CdSxSe1-x nanorods are highly crystalline, and no other phase was observed in these nanorods.     

Neutral Leaching of Low-Grade Pyrolusite with High Silica Content

Leaching studies of low-grade pyrolusite, containing 11.84% Mn with high silicon, were carried out using sodium sulfite as a reductant in ammonium sulfate medium. Various process parameters including temperature, leaching time, solid-liquid ratio, quantity of ammonium sulfate, as well as the amount of reducing agent were studied in detail. The manganese extraction yield was the response of the process. Temperature and reagent concentration exerted the most important positive effect on the manganese extraction. The optimized conditions showed that when the amount of reducing agent was a stoichonmetric amount, over 90% manganese extraction and the lowest impurities were achieved, the amount of heavy metal impurities in the manganese leaching liquid was less than 5 mg/L, and almost no iron and aluminum were extracted in 3 mol/L ammonium sulfate concentration at 100 ℃ in 45 min.     

又一种冷云成核引晶剂——“间苯三酚”

在1949-1950年间,公认的过冷云、雾的冰晶试剂是干冰、碘化银和碘化铅.其后,近25年间在无机物中只找到一种在一定程度上能代替碘化银和碘化铅的物质,就是硫化铜.为了在有机物中寻找引晶剂曾作过大量的试验,后来发现间苯三酚能起冰核的作用.间苯三酚即1、3、5苯三酚C_6H_3(OH)_3·2H_2O,是一种菱形晶体(a=6.79?,b=8.1?,c=13.7?),在温度110℃时失去结     

工程勘察中激光三维扫描和建模技术研究

激光三维扫描和三维地质建模技术的应用,使得工程地质体的变形、沉降、扭转、位移勘察工作变得更加高效、快速和经济.简要介绍了逆向工程的基本思想,探讨了逆向工程在工程勘察中的应用模式,基于激光三维扫描仪器Trimble GS200和三维数据处理软件CATIA,阐述了工程勘察过程中数字模型的建立方法和图像数据的处理流程,并通过对处理结果的分析来完成工程勘察的目标.通过对一个实体数据实例的分析和模拟,实现了对实体表面地质数据的全面分析和动态监控.分析发现,联合应用激光三维扫描和三维地质建模技术,能够在河道变形分析、大坝位移与变形监测、飞机跑道路面勘察、桥梁变形监测等工程勘察工作中发挥作用,其发展前景非常广阔.