区域旅游开发的RMP分析——以河南省洛阳市为例

针对目前中国区域旅游开发所面临的旅游产品结构性过剩、产品开发由80年代的“低投入高产出”向“高投入高风险高产出”的特征变化,作者提出了区域旅游开发中应该从资源(Resource)、市场(Market)和产品(Product)三个方面进行程序式评价论证,即所谓的昂谱(RMP)分析模式,为区域旅游规划提供基本思路。这一模式在1999年进行的洛阳市旅游发展总体规划中得到了操作性应用     

Aloka LSC-LB1低本底液闪仪升级改造

本文介绍了为AlokaLSC LB1低本底液闪仪配置计算机升级改造工作。新系统具有实时能谱测量 ,中断后恢复测量 ,自动换样 ,用户设置测量参数 ,软窗选择工作点 ,计算系统效率、1 4 C年龄、3 H含量 ,打印报表等多种功能。提高了原系统的智能化程度。     

Vertical Migration of Petroleum via Faults in Zhu Ⅲ Subbasin, Pearl River Mouth Basin, South China Sea

ＩＮＴＲＯＤＵＣＴＩＯＮＤｏｗ (1994)ｓｔａｔｅｄ ,“Ｉｆｗｅｋｎｅｗｗｈｅｒｅｔｈｅｏｉｌｓｃａｍｅｆｒｏｍａｎｄｈｏｗｔｈｅｙｍｉｇｒａｔｅｄ ,ｗｅｃｏｕｌｄｂｅｔｔｅｒｐｒｅｄｉｃｔｗｈｅｒｅｔｈｅｙｗｏｕｌｄｂｅｆｏｕｎｄｉｎｔｈｅｆｕｔｕｒｅ .”Ｔｈｉｓｓｔａｔｅｍｅｎｔｈｉｇｈｌｉｇｈｔｓｔｗｏｉｍｐｏｒｔａｎｔａｓｐｅｃｔｓ,ｔｈｅｓｏｕｒｃｅｏｆｏｉｌｓａｎｄｔｈｅｍｉｇｒａｔｉｏｎｏｆｏｉｌｓ.Ｓｅｃｏｎｄａｒｙｍｉｇｒａｔｉｏｎｉｓｔｈｅｍｏｖｅｍｅｎｔｏｆｐｅｔｒｏｌｅｕｍｂ…     

滇中南无量山种子植物区系联系及其地位

无量山种子植物区系迄今为止含207科,1027属,2548种,极其丰富,通过对区系相似性系数、云南各自然小区的共有种频率以及中国特有属三方面的分析,把无量山置于东亚植物区的中国-喜马拉雅森林植物亚区的云南高原地区。     

三元体系Mg~(2 )/Cl~-,Borate—H_2O25℃相关系和溶液性质的研究

用等温溶解法测定了Mg2+／Cl-，Borate-H2O三元体系25℃时的溶解度．此三元体系等温溶解度图为简单共饱型，它的平衡固相分别为三方硼镁石（Mg2B12O20·15H2O）和MgCl2·6H2O，未产生新的复盐或固溶体。拟合了MgB6O10随MgCl2浓度变化的溶解度曲线方程，并且对平稳溶液的物化性质（密度、粘度、折光率、电导、pH值）进行了测定，用半经验公式描述了一些物化性质随浓度的变化规律，结果令人满意。     

华北板块北缘东段上三叠统的若干特征

位于华北板块与古蒙古洋板块的交接处、金银别河至白水滩一带的一套变质的陆相碎屑岩,前人命名为白水滩组,时代归属早侏罗世。80年代末笔者在此进行1∶5万区域地质调查,在该地层中采到了Neoclamites sp.,Cycadocarpiclium sp.,Uniohuang bogouensis(?)等重要分子,同时发现其被二长花岗岩(U—Pb 192.7Ma)侵入,暂与小营子组对比,将其时代归属为晚三叠世。该套地层分为上下两段,即下部砾岩段和上部砂岩段;地层褶皱形态复杂,断裂构造发育,新老地质体相互推覆掩盖,构成独特的地质景观。     

无线短波计算机通信网在地震数据传输中的应用

本文根据“七五”期间建立区域地震无线数据通信网的成功经验,提出建立全国地震无线短波计算机通信网的技术方案。文中对通信网系统总体结构和组网方式、通信规程、系统功能和特点进行了介绍,重点阐述了通信网软件的设计方法和主要实现技术。     

Research on thermal structure and thermal stress of the crust in Bohai Sea and its surroundings

In this paper, the three-dimensional thermal structure and the two-dimensional thermal stress caused by the horizontal inhomogeneity of the thermal structure in the crust of the Bohai Sea and its surroundings were analyzed using the geothermal and the crust structural data by means of the finite element method. As resulted, the horizontal distribution of the temperature in the upper crust is obviously different from that in the lower crust in most part of the region. But the horizontal distribution of the heat flow is constant in the crust. There is a belt where the thermal structure of the crust is intensely changed around Tangshan. There are some different characteristics of the thermal stress of the crust around Tangshan, in the North-China plain, in the Bohai Sea gulf, and in the middle part of the Bohai Sea. Utilizing those results, the distribution features of the seismic activity in the region were explained in this paper. The Chinese version of this paper appeared in the Chinese edition ofActa Seismologica Sinica,14, 29–35, 1992. This project is supported by the Chinese Joint Seismological Science Foundation.     

试论层状铜矿的三种主要成因模式

层状铜矿是铜矿资源中仅次于斑岩铜矿的重要矿床类型,包含多种成因机制,历来有同生与后生之争。本文归纳了这类铜矿的３种成因模式,即“沉积－成岩”、“沉积－喷气”和“沉积－改造”模式,讨论了它们的不同特征和机制,以及三者之间的相互关系。文中对“沉积－改造”模式进行了重点讨论,并强调了这一成矿作用的意义。     

Non-adiabatic interactions in excitedC 2 H molecules and their relationship toC 2 formation in comets

A unified picture of the photodissociation of theC ₂ H radical has been developed using the results from the latest experimental and theoretical work. This picture shows that a variety of electronic states ofC ₂ are formed during the photodissociation of theC ₂ H radical even if photoexcitation accesses only one excited state. This is because the excited states have many avoided corssings and near intersections where two electronic states come very close to one another. At these avoided crossings and near intersections, the excited radical can hop from one electronic state to another and access new final electronic states of theC ₂ radical. The complexity of the excited state surfaces also explains the bimodal rotational distributions that are observed in all of the electronic states studied. The excited states that dissociate through a direct path are limited by dynamics to produceC ₂ fragments with a modest amount of rotational energy, whereas those that dissociate by a more complex path have a greater chance to access all of phase space and produce fragments with higher rotational excitation. Finally, the theoretical transition moments and potential energy curves have been used to provide a better estimate of the photochemical lifetimes in comets of the different excited states of theC ₂ H radical. The photochemically active states are the 2²₊, 2²II, 3²II, and 3²₊, with photodissociation rate constants of 1.0×10^–6, 4.0×10^–6, 0.7×10^–6, and 1.3×10^–6s^–1, respectively. These rate constants lead to a total photochemical lifetime of 1.4×10⁵ s.