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Ray Durrheim was born in Bloemfontein in 1956. He is a graduate of Stellenbosch (BSc, 1977), Wits (BSc Hons, 1978 and PhD, 1990), Pretoria (MSc, 1984), and UNISA (BA, 1984).He started his career in 19...
The unusual behaviour of smectites, the ability to change volume when wetted (swelling) or dried (shrinking), make soil containing smectites very unstable and hazardous for the building industry due t...
Analysis of 53 bulk powders derived from various rocks of the Upper Floridan Aquifer reveal calcite, dolomite/ankerite, quartz, apatite, and smectite to be the dominant minerals, with the clay and apa...
Prior to DSDP Leg 17, no sites drilled in the central Pacific had continuously cored a thick section of pelagic brown clay. On Leg 6 several sites were drilled through brown clay, but poor recovery du...
Real-time, temperature-resolved synchrotron powder X-ray diffraction data and Rietveld refinements provide unprecedented insights into mineral behaviors and mechanisms of crystal structure transformat...
In spite of the abundance of colors found in the murals and other objects that correspond to the Classic Mayan period (600-900 A.D.), a peculiar hue captured the interest of researchers. The most well...
A periodical unevenness of the running surface of rails is formed on ascending slope of submarine railway tunnel. One of the causes has been concluded due to the combination of a low friction and whee...
The leather industry creates a large quantity of organic and inorganic waste containing chromium. This research examines stabilization of particulate tannery waste in type II Portland cement. Several ...
The palaeoecology and palaeobiogeography of two Cretaceous selachian genera, Tribodus BRITO & FERREIRA,1989 and Pseudohypolophus CAPPETTA & CASE, 1975, are briefly discussed. These two similar-sized t...
Seven juvenile specimens of Raja inornata were CT scanned and digitally modeled to examine the variation of synarcual morphology with changing size. The synarcual is a highly variable skeletal element...
Rietveld refinements using synchrotron powder X-ray diffraction data were used to study the crystal structure and dehydration behavior of pure monoclinic palygorskite samples from Korea and Alaska. Th...
期刊信息 篇名 基于X-Ray CT方法的岩石小裂纹的性质研究 语种 中文 撰写或编译 作者 仵彦卿,曹广祝,王殿武 第一作者单位 刊物名称 应用力学学报 页面 2005年(在出版) 出版日期 2005年 月 日 文章标识(ISSN) 相关项目 三轴条件下冻融岩石损伤过程的CT三维实时观测
Abstract: An internal standard X-ray diffraction (XRD) analysis technique permits reproducible and accurate calculation of the mineral contents of rocks, including the major clay mineral families: Fe-...
The Clay Minerals Society maintains a repository of Source Clays to provide scientists and researchers with a readily available supply of consistent materials so that research conducted by different ...

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