查明地质异常：成矿预测的基础

一成矿有关的条件都表现为地质演化过程中的地质异常事件。与成矿有关的地质异常都是“成矿可能地段”，可能找到预期类型矿床的地质异常或异常带可以称为“找矿可行地段”，而其中有更多的直接和间接找矿信息的部位则称之为“找矿有利地段”。地质异常在不同尺度水平上具有自相似性，在空间上具有复杂扰因机制－－混沌动力学机制，在表现形式上，包含显式和隐式两大类型的地质体或地质体组成。它们与成矿的关系是内在的成因联系和空     

中国满洲里—绥芬河断面域及邻区地球化学分区及其形成的构造过程

基于对断面域前寒武纪基底、古生代碎屑岩和花岗质岩石的化学组成分析，结合区域成矿和构造演化特征，建立了断面域前寒武纪和古生代两个不同时间域的地球化学分区。通过地球化学分区与构造演化的关系研究，探讨了地球化学区形成的构造过程。     

中国东部地壳元素丰度与岩石平均化学组成研究

迄今我们习用的地壳化学元素丰度和岩石平均化学组成的文献值大多是收集的汇编数据,不少微量元素特别是贵金属等难测元素的丰度所依据的样品的代表性和测试质量难以考证,其值存在着颇大的不确定度。本研究立足于实测资料,在中国东部系统采集了各类火成岩和变质杂岩体及各时代的标准地层剖面岩石样品28253个,组合成2718个分析样。采用中子活化等15种可靠分析方法测试,以国家一级标准物质作质量监控。求得的华北地台地壳、中国东部上地壳和出露地壳及各类岩石的78种化学元素丰度,显著改善了地壳和岩石的化学元素丰度,填补了多种岩石微量元素丰度的空白。     

多宝山斑岩铜矿区水热蚀变矿物的激光显微探针40Ar/39Ar定年

在利用脉冲显微激光探针⁴⁰Ar/³⁹Ar定年技术测定标准样品的J值和年龄适用范围的基础上,研究了黑龙江省嫩江县北部多宝山斑岩铜矿区水热成因矿物的年代学。结果表明,高钾含量的水热蚀变矿物适合于激光探针的表面微区测定,并且可以克服水热蚀变矿物中的³⁹Ar “反冲”丢失对年龄结果的影响。矿区的岩浆-水热事件主要有两期,分别为253-220Ma和184-162Ma,前者代表了成矿时代,后者反映出由成矿期后岩浆活动所引起的水热叠加事件。     

Study of radioactive status in the Zhujiang Estuary and adjacent sea area in South China Sea (SCS)

Through the investigation on radioactive activities of water, sediment and some marine organismsin the Zhujiang Estuary, adjacent sea area and the distributary mouths of the Zhujiang River, activities of total α. radioactivity, total β radioactivity, artificial radioactive 90Srand 157Cs, and factors inflencing the distribution and the content of U in seawater are studied.The mainly radioactive pollution substances and their sources in the sea area are studied by γ spectra obtained from sediment in the sea area. The results show that the main radioactivity substances are natural radioactivity U,Th series and 40K. which were produced by the modern industry and transported into the sea through the main current of the Zhujiang River.     

Tide Forecasting of Tides Around Taiwan by Artificial Neural Network Method and Wavelet Analysis

In multiresolution analysis(MRA)by wavelet function Daubechies(db),we decompose the signal to two parts,the low and high frequency content.The high-frequency content of the data is removed first and a new "de-noise" signal is reconstructed by using inverse wavelet transform.The wavelet spectrum and harmonic analysis were used to analyze the characteristics of tidal data before constructing the input and output structure of ANN model.That is,the concept of tidal constituent phase-lags was introduced and the new "de-noise" signal was used as the input data set of ANN and the forecasting accuracy of ANN model is significantly improved.     

AccQ-Tag法测定毛蚶抗贫血口服液中的氨基酸含量

以 6 -氨基喹啉 - N-羟基琥珀酰亚胺基氨基甲酸酯 (AQC)为衍生剂 ,与毛蚶抗贫血口服液中的氨基酸柱前定量衍生 ,用 Waters HPL C仪 ,Acc Q- Tag TM专用 C18柱 (3.9mm× 15 cm) ,以140 mmol· L-1的醋酸钠溶液 (p H5 .0 2 )为溶剂 A,乙腈为溶剂 B,超纯水 (Milli- Q水 )为溶剂 C,进行梯度洗脱 ,检测波长为 2 4 8nm,35 min测试完毕。各种氨基酸测定的重现性 RSD%均 <3.0 %(n=5 )。该方法简便快速 ,结果准确可信。     

甲壳胺人工皮—CHIMEHERB治疗不同类型创面初步结果

本文报告了1989年1月至12月使用甲壳胺人工皮治疗94例不同类型创面,其中手部创伤66例,烧伤5例,其它创面17例。结果断层皮肤损伤愈合良好,小面积全层皮肤损伤愈合后有少量疤痕形成,在手外伤中,以指端损伤效果较好,采用此疗法,方法简单,易于推广。     

Friction Characteristics at the Pipe-Soil Interface

-In order to analyze the stability of pipelines on the sea bed, the friction characteristics at the pipe-soil interface were examined by means of special direct shear tests. High density polythene was used as the surface of the pipe, which is a widely-utilized material for the outer cover of the pipe to prevent sea water corrosion. Sands of different gradings were tested. The reconstituted soft clay taken from the Bohai area was consolidated to different degrees of consolidation by the vacuum preloading technique, and tested.     

Residential satisfaction and the propensity to move: an analysis of potential movers from marginal settlements in Costa Rica

The authors use 1974 survey data from three marginal communities in the city of Limon, Costa Rica, to examine the propensity of settlers in such communities to move voluntarily. In particular, the concept of residential satisifaction is examined and refined