نتایج جستجو برای: mineralogical characterization
تعداد نتایج: 378077 فیلتر نتایج به سال:
Overview: The objectives of the Earth-Mars Cave Detection Project is to identify regions on Mars likely to contain caves and/or cave-bearing geology through (1) the analysis of multispectral imagery from past and current orbital missions and other orbital assets (e.g., radar), and (2) the investigation of terrestrial analogs for the identification of associated thermal, and geosignatures. The p...
Earth scientists are often asked to establish or constrain the likely provenance of very small quantities of earth-related material as part of a forensic investigation. We tested the independent and collective interpretations of four experts with differing analytical skills in the prediction of sample provenance for three samples from different environmental settings. The methods used were X-ra...
Although asbestos research has been ongoing for decades, this increased knowledge has not led to consensus in many areas of the field. Two such areas of controversy include the specific definitions of asbestos, and limitations in understanding exposure-response relationships for various asbestos types and exposure levels and disease. This document reviews the current regulatory and mineralogica...
Experimental results of the study of the mineralogical characterization of coals by X-Ray differaction and IR are reported. These results suggest that different minerals present as major and minor phases in the coals could be distinctly characterised by X-ray diffractometry. The IR spectroscopy technique has provided additional supplementry informations for the identification of several other m...
Studies on the kinetics of dissolution of a Nigerian lateritic soil in acids media including hydrochloric, nitric and sulphuric acids have been undertaken. The elemental and mineralogical characterization, loss of mass on ignition, moisture content and pH of the material suspension in water were determined. The effects of acid concentration, process temperature, stirring rate and particle size ...
In this study, we present mineralogical and geochemical characterization of samples systematically collected from a nickel laterite profile at the Sta. Cruz deposit, Zambales, Philippines. Wavelength-dispersive X-ray fluorescence spectroscopy (WDSXRF), mass-balance element mobility calculations, transmitted reflected light microscopy, previously reported results coupled diffraction (XRD) Rietve...
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