GEMOLOGY, MINERALOGY, AND SPECTROSCOPY OF GEM-QUALITY DIOPSIDE FROM PAKISTAN AND RUSSIA: NEW INSIGHTS FOR THE CHROMOGENIC MECHANISM AND POSSIBLE ORIGIN

Green diopside is currently popular in the jewelry market due to its attractive color and excellent transparency.Gem-quality diopsides are mainly sourced from Pakistan, Italy, Russia, and other places.The color, geographic origin, and formation mechanism are the main factors affecting the value of gemstones, which can be determined by examining the

Measurements of activity concentrations of natural radionuclides in and around Obajana cement factory, North Central Nigeria have been carried out in this study to determine the activity levels of natural radionuclides in different environmental matrices in order to assess the radiological health GPS Antenna hazards associated with the use of these

The brown pansy, Junonia stygia (Aurivillius, 1894) (Lepidoptera: Nymphalidae), is a widespread West African forest butterfly.Genome skimming by Illumina sequencing allowed assembly of a complete 15,233 Bicycles bp circular mitogenome from J.stygia consisting of 79.5% AT nucleotides.Mitochondrial gene order and composition is identical to other but

The effect of the polycarboxylate ether and the complex hydrophobic-plasticizing additive on the structure, phase and mineral composition Colon Support of cement based on polymineral clay with content of relict minerals more than 85 % (52.49 % of quartz) was studied.As research methods chosen X-ray diffraction pattern, differential scanning calorim

The Medium Resolution Imaging Spectrometer (MERIS) launched in February 2002 on-board the ENVISAT spacecraft is making global observations of top-of-atmosphere (TOA) radiances.Aerosol optical properties are retrieved over land using Look-Up Table (LUT) based algorithm and surface reflectances in the blue and the red spectral regions.We compared ins