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1.
Huahua Lü 《世界地质(英文版)》2006,9(1)
In order to make use of ocean clay reasonably and excavate its potential applications the properties of ocean clay in Chinese investigating area of the East Pacific have been tested with the chemical analysis, XRFS, ICP/MAS, granulometry and SSA, etc. The results show that the clay sediments of this area are rich in clay minerals, fine granularity, bigger SSA, bigger water absorbability and lower ion changing ability etc. To improve the adaptability of ocean clay and macromolecule materials, using the dry milling method with silane, aluminate, stearic acid coupling agents etc the properties of ocean clay are improved. The effect has been evaluated by testing the water absorbing of the modified ocean clay and their dispersing in paraffin liquid. The result is that KH550 is better than any other active reagents, and the best activation technics is that 1.5% (volume) of KH550 quantity, 20min of milling time. The DTA, XRD, SEM and IR analyses and SSA testing show that the organic activation can not change the mineral structure but can densify the structure of clay, and activation mechanism is chemical covered mainly and chemical combined secondly. 相似文献
2.
测试了１３０余件含金石英脉及不含金石英脉的红外光谱试样，查明了该区含金石英脉的红外光谱特征，同时配合其它预测含金石英脉的测量方法，提出了该区含金石英脉的预测靶区，经过初步验证，预测基本上是准确的。 相似文献
3.
中国与俄罗斯及中亚地区的贸易格局分析 总被引：2，自引：2，他引：0
作为上海合作组织成员国及丝绸之路经济带的重点区域,俄罗斯及中亚地区与中国经贸关系日益密切,对中国内陆开放及地缘政治安全具有重大意义。利用贸易强度指数、贸易互补性指数、出口集中指数等,对1992-2012年中国与俄罗斯及中亚地区的贸易发展历程及空间格局、进出口产品格局进行深入分析。结果显示双方贸易强度不断提升,且贸易互补性增强,同时俄罗斯及中亚出口产品种类明显增加。当前双方贸易格局呈现以下特点:俄罗斯及中亚形成了以资源类初级产品为绝对主导的出口产品结构,中国则以机械设备及纺织服装等为主;中国对其出口贸易格局是边境贸易与地区产业专业化格局叠加的结果,进口贸易格局则受边境贸易及能源需求格局的影响。 相似文献
4.
科学评估“一带一路”建设对沿线国家经济增长的影响效果与中介路径,对理解国际合作模式、推动“一带一路”建设向高质量发展转变具有重要意义。基于2003—2017年“一带一路”沿线64个国家的相关数据,采用固定效应面板模型和中介效应检验程序,实证检验了“一带一路”建设对沿线国家经济增长的总体性影响效果,并分析对外直接投资、进出口贸易、交通运输、就业等中介因素之间的作用关系。研究结果表明：2013—2017年间“一带一路”建设能够显著地促进沿线国家的经济增长,但新建交通基础设施线路长度、中国对外直接投资等对沿线国家GDP增长的直接促进作用并不显著。它主要通过推动中国与沿线国家之间的贸易增长,对沿线国家内部的货物资源流动、人口就业率、就业结构等产生积极影响,进而促进沿线国家的GDP增长。 相似文献
5.
Ⅰ. INTRODUCTION. The most popular Chinese agalmatolites are Shoushanshih (壽山石), Changhuashih (昌化石), Chingtienshih (青田石) and Kwanglushih (廣綠石). They are named after the names of places, as the name Shoushanshih is from 相似文献
6.
Analyzing raw material's structure and performance of bentonite from Panzhihua in Sichuan, the authors think that it is adequate for agglomerant of iron smelting. According to its composition and property we have researched the purification and modification of I/S bentonite under conditions of different dispersants and sodium agent. XRD test result reveals that the essential minerals of Panzhihua bentonite are I/S mixed-layer ones, and FTIR analysis shows that when adding 1 5% sodium pyrophosphate to the bentonite slurry during purification, the composition of quartz in bentonite decreases to less than 4% and I/S is more than 90%. The optimized modification technic conditions are Na2CO3 (4%) and CMC-Na (3%) as modified agents, the clay and water are 10 vs. 1, and the temperature is 75℃. It is 40 min for stirring time and reacting time is 4 h. Under the conditions we can get the modified I/S bentonite with colloid index more than 500 ml/15 g. 相似文献
7.
FRANZ WEIDENREICH 《地质学报》1937,(Z1)
In my publication on the Choukoutien population published lastyear I gave a list of all the Sinanthropus material available at that time.Since then only a few new discoveries have been made which, althoughfew in number, are of the greatest importance. 相似文献
8.
Sensitivity of Chinese Industrial Wastewater Discharge Reduction to Direct Input Coefficients in an Input-output Context 总被引：1，自引：0，他引：1
Industrial wastewater discharge in China is increasing with the country′s economic development and it is worthy of concern. The discharge is primarily relevant to the direct discharge coefficient of each sector of the economy, its direct input coefficient and the final demand in input-output models. In this study, we calculated the sensitivity of the reduction in the Chinese industrial wastewater discharge using the direct input coefficients based on the theory of error-transmission in an input-output framework. Using input-output models, we calculated the direct and total industrial wastewater discharge coefficients. Analysis of 2007 input-output data of 30 sectors of the Chinese economy and of 30 provincial regions of China indicates that by lowering their direct input coefficients, the manufacturers of textiles, paper and paper products, chemical products, smelting and metal pressing, telecommunication equipment, computers and other electronic equipment will significantly reduce their amounts of industrial wastewater discharge. By lowering intra-provincial direct input coefficients to industrial sectors themselves of Jiangsu, Shandong and Zhejiang, there will be a significant reduction in industrial wastewater discharge for the country as a whole. Investment in production technology and improvement in organizational efficiency in these sectors and in these provinces can help lessen the direct input coefficients, thereby effectively achieving a reduction in industrial wastewater discharge in China via industrial restructuring. 相似文献
9.
大别山高压变质杂岩中的硬玉 总被引：10，自引：1，他引：10
本文描述了在大别山高压变质杂岩中新近发现的石榴硬玉石英岩的岩石学物质特征。对高压指示性矿物硬玉的物理性质、光学性质、化学成分及结构进行了精确测定和研究。认为石榴硬玉石英岩与柯石英榴辉岩形成于同一高温超高压物理化学条件，硬玉的出现主要受控于原岩特定的化学成分。 相似文献
10.
中国与“一带一路”沿线国家贸易的商品格局 总被引：12，自引：2，他引：10
经贸合作是"一带一路"建设的重点内容之一。研究中国与"一带一路"沿线国家的经贸合作演变特点及格局,对于促进沿线各国经济繁荣与区域经济合作,实现"贸易畅通"具有重要意义。本文在文献回顾的基础上,基于大量的数据分析,梳理了2001年以来中国与沿线国家贸易的商品结构演化历程,并采用显性比较优势指数、敏感性行业度量及k值聚类算法等,对中国与沿线国家贸易商品结构及格局进行了深入分析。研究结果显示:1中国对沿线国家的出口商品结构有所优化,进口商品结构日趋集中,能源及劳动密集型产品比重上升;2中国与沿线国家贸易的商品结构与各国出口优势行业基本一致;3中国与经济规模相对较小且产业结构较为单一的国家存在一些敏感性行业,出口方面涉及服装鞋帽、矿物制品及交通运输设备等,进口主要涉及能源、矿砂及一些资源初级加工品;4由于国内各省发展差距明显,中国出口商品的空间连续性较差。 相似文献