用土的分形结构确定土的水份特征曲线

运用筛析法和比重计法，分析了宁夏膨胀土的颗粒分布，发现粒径介于0．002～0．1mm的粒度分布是分形的，分维介于2．46～2．67；运用上孔隙分布的分维确定水份特征曲线，得到了很好的结果。此外，还探讨了粒度分形分布的机制。     

Inter- and intra-annual trend analysis of water level and flow in the middle and lower reaches of the Ganjiang River,China

ABSTRACT

The Ganjiang River is the largest tributary of Poyang Lake in China, and its hydrological regime variation greatly affects the utilization of regional water resources and the ecological environment of the lake. In this study, a novel trend analysis method, the Moving Average over Shifting Horizon (MASH), was applied to investigate the inter- and intra-annual trends of flow and water level from 1976 to 2016 at the Xiajiang and the Waizhou hydrological stations in the Ganjiang River. The Significant Change Rate Method (SCRM) was proposed to determine the MASH averaging parameters. The trend analysis results show a statistically significant decrease in water level series throughout the year and the relationship of flow and water level have changed greatly at the Waizhou station. The sediment load reduction, large-scale sand mining and water level decrease of Poyang Lake are identified as the main causes for the water level decrease.     

Proline with or without hydroxyproline influences collagen concentration and regulates prolyl 4-hydroxylase α (I) gene expression in juvenile turbo (Scophthalmus maximus L.)

Journal of Ocean University of China - This study was conducted to investigate the effect of dietary proline (Pro), and Pro and hydroxyproline (Hyp) in combination on the growth performance, total...     

英峰岭剖面红土的粘土矿物和化学特征与成土环境关系

地球化学与粘土矿物学研究表明,广东雷州半岛英峰岭多期红土是拉弱武岩红土化初级阶段的产物,由剖面底层至顶层,红土成熟度依次递增。各层红土中主要粘土矿物含量和粘土的Ｆｅ２Ｏ３含量,以及工土和粘土的氧化,淋溶,富铁铝等化学特征系数与红土埋深之间呈波动起伏的关系。     

An interior solution of the vector graviton gauge field

We have found an interior solution of the Einstein equation containing a vector graviton field under a special mass distribution.     

安徽沿江地区中生代岩浆岩的基本特点

安徽沿江地区位于长江中下游岩浆带中段,中生代岩浆活动强烈,类型复杂,特点突出。它具有夹心饼干式分带现象。中间为富碱的高钾钙碱性岩系和橄榄安粗岩系;两侧为钙碱性岩系。中间的岩浆岩具有高钾富碱、高Ｓｒ,低Ｍｇ、Ｃｒ、Ｎｉ,εＮｄ变化大但Ｉｓｒ变化小且较低以及岩浆演化的多样性为特点。     

Mid-Late Neoproterozoic rift-related volcanic rocks in China: Geological records of rifting and break-up of Rodinia

Early Cambrian and Mid-Late Neoproterozoic volcanic rocks in China are widespread on several Precambrian continental blocks,which had aggregated to form part of the Rodinia supercontinent by ca.900 Ma....     

中国东部中一新生代活动大陆边缘构造—岩浆作用演化和发展

本文论述中国东部中－新生代由科迪勒拉型转变为西太平洋活动大陆边缘过程中的构造－岩浆作用及其演化。在印支旋回（２５０～１８５Ｍａ）,初始欧亚板块与古太平洋板块强烈挤压俯冲,并伴随大范围改造型花岗岩类的发育。在燕山早期（１８５～１４０Ｍａ）,继续俯冲,改造型花岗岩进一步发育,并开始有同熔型花岗岩类的形成。在约１４０Ｍａ两类花岗岩的形成达到高潮。在１４０～１００Ｍａ广泛发育安山－流纹岩系。燕山晚期（１００～７０Ｍａ）由于弧后扩张,配合红色盆地的广泛形成,发育碱性火山岩和碱性花岗岩带．新生代中国东部大陆花岗岩和中－酸性火山岩活动消失,代之以玄武岩活动;边缘海和岛弧逐渐形成,钙碱性火山岩系转入岛弧地带。     

2003年淮河流域大洪水的雨情、水情特征分析

利用地面加密资料,分析了2003年淮河流域6~7月降水的时空分布和气候统计特征以及降水雨情、水情特征,并与历史同期进行了比较。结果表明：2003年淮河流域梅雨期经历了7次强降水过程,降水总量和洪水流量都超过1991年同期,但低于1954年梅雨期;2003年淮河流域降水的突出特点是：雨带稳定、暴雨集中和突发性强;水情特点是：洪峰逐次递减;造成淮河流域全线超警戒水位的重要原因是：2003年春季降水偏多、7月份副热带高压位置偏南以及淮河中游下段河床剖面倒比降。     

大地热流测量数据子库

大地热流数据子库是建立在Microsoft Access 97基础上,以Microsoft Visual Basic 6.0开发、基于Windows平台上的集数据储存、编辑、报表打印输出及基本数据解释处理于一体的数据库管理软件.具有运行速度快、操作简单、易学及可靠性强等优点.特别编制了强大的数据查询系统,提供了各种查询方式,大大方便了用户.