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9. Understanding Chemical and Mineralogical Composition of Nahartangi Nephrite from Goshta

Author

Amin, Usman, Zaheer, Hamid Zaheer, Salih, Abdul Haq, Bawary, Ahmad Faham, Noorzai, Safiullah, Noori, Ulfatullah, Nader, Sohaib, Amin, Usman, Zaheer, Hamid Zaheer, Salih, Abdul Haq, Bawary, Ahmad Faham, Noorzai, Safiullah, Noori, Ulfatullah, and Nader, Sohaib

Abstract

The geochemical mineralogical characteristics of the Nahartangi nephrite deposit in the Goshta district of Nangarhar province are investigated in this research. Nephrite is a Cyclosilicate mineral with a high silicate content. Ca2(Mg, Fe)5Si8O22(OH)2 is its chemical formula, and it is monoclinic. It's been discovered in metamorphic rocks across the arena. The nephrite zone of Nahartangi is linked to the Jalalabad structural band and the ophiolite complex. Jalalabad is a region in eastern Afghanistan, southeast of Nuristan. As a result, this belt is associated with the upper or late Cambrian. The age of the rocks in this quarter is related to the Archean-Mesoproterozoic AR-PR2. This manuscript offers the first systematic mineralogical and geochemical observation of the Nahartangi nephrite deposit electronic probe Microanalysis, X-ray fluorescence spectroscopy (XRF) and mineralogical analysis. The Nahartangi nephrite was investigated using an XRF and petrographic microscope. According to field research, dolomitic marble is involved in Nahartangi nephrite deposits close to the intrusive granitoids. According to petrographic investigations, nephrite is mostly made up of fine-grained actinolite, schist, and dolomite, all of which are metamorphic minerals. Through every phase, nephrite samples had low Fe/(FeO+MgO) values (8.2524.17%) according to geochemical analysis, and SiO2 (81.30%), Al2O3 (3.22), and CaO (17.41%) were also low and 1.21% NiO content, as well. Chemical records analysis and interpretation of Mg+Fe percentages indicate that actinolite is the type of nephrite. The formation of veins and hydrothermal lenses in contact with serpentinite and carbonates has produced nephrite deposits. Dolomitic marble rocks are the specific rocks found near the study area. The economy and value are immediately impacted by color and its transparency. The presence of Mg elements causes the nephrite from the Goshta

Published
2023

15. Role of fruits in aging and age-related disorders

Author

Arif, Muhammad Usman, primary, Khan, Muhammad Kashif Iqbal, additional, Riaz, Sana, additional, Nazir, Akmal, additional, Maan, Abid Aslam, additional, Amin, Usman, additional, Saeed, Farhan, additional, and Afzaal, Muhammad, additional

Published
2022
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18. Microwave assisted drying and extraction technique; kinetic modelling, energy consumption and influence on antioxidant compounds of fenugreek leaves

Author

KHAN, Muhammad Kashif Iqbal, primary, GHAURI, Yasir Mahmood, additional, ALVI, Tayyaba, additional, AMIN, Usman, additional, KHAN, Muhammad Issa, additional, NAZIR, Akmal, additional, SAEED, Farhan, additional, AADIL, Rana Muhammad, additional, NADEEM, Muhammad Tahir, additional, BABU, Irrum, additional, and MAAN, Abid Aslam, additional

Published
2022
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20. Heterologous expression and biophysical characterization of a mesophilic tannase following manganese nanoparticle immobilization

Author

Dutta, Nalok, primary, Miraz, Shahriar Md., additional, Khan, Muhammad Usman, additional, Karekar, Supriya Charuhas, additional, Usman, Muhammad, additional, Khan, Shahbaz Manzoor, additional, Amin, Usman, additional, Rebezov, Maksim, additional, Shariati, Mohammad Ali, additional, and Thiruvengadam, Muthu, additional

Published
2021
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34. CHARACTERIZATION OF COMPISOTE EDIBLE FILMS FROM ALOE VERA GEL, BEESWAX AND CHITOSAN.

Author

Amin, Usman, Khan, Muhammad Azam, Akram, Muhammad Ehtasham, Said Al-Tawaha, Abdel Rahman Mohammad, Laishevtcev, Alexey, and Shariati, Mohammad Ali

Subjects
*ALOE vera, *CHITOSAN
Abstract

Environmental consciousness as well as individual's demand for ready to eat food, recently, has changed the trends in food packaging leading to the development of biodegradable and edible packaging. Emulsified edible films have better transparency, superior mechanical properties and provide barriers to water and other atmospheric gases. Edible films if not consumed, biodegrad chemically. In present study, edible films were, initially, prepared using Chitosan and Aloe vera at different concentrations. Films were then subjected to physical and mechanical testing. Films with 20% Aloe vera had low thickness as compared to films with no Aloe vera. These films also had superior mechanical properties and lower water vapor permeability. Films with 20% Aloe vera were, then, selected and beeswax was dispersed in Chitosan-Aloe vera solution at concentration upto 2.0% followed by film preparation through casting technique. Thickness and water vapor permeability were observed to be improved with increase in concentration of beeswax. Tensile strength of edible films was also improved 1.3 times when concentration of beeswax increased from 0.5 to 2.0%. Percentage elongation decreased with increase in beeswax concentration in the emulsified films. No change in particle size was observed with change in concentration of beeswax. Emulsions were also stable at room temperatures. Decrease in transparency of emulsified edible films was observed with increase in beeswax content in the emulsified films. In addition, cost analysis of the films proved them reasonable to be used as an alternate of synthetic packaging materials. [ABSTRACT FROM AUTHOR]

Published
2019
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35. Energy-Efficient and Environmentally Sound Technique of Emulsification and Phase Inversion for Producing Stable Droplets -- Application of Membrane Emulsification to Polymerization: A Review.

Author

Habib, Muddasar, Memon, Abdul Rehman, Habib, Unsia, Khan, Amadullah, Amin, Usman, Naveed, Syed, and Ali, Sultan

Subjects
STABILIZING agents, ARTIFICIAL membranes, DROPLETS, POLYMERIZATION, TURBULENCE, FLUID dynamics
Abstract

Emulsification plays an important role in the formation of many products such as milk products, pharmaceuticals, lubricants, paints, dyes, and many food items. Their application in industry such as mining, crude oil extraction, pulp and paper, textile, and polymer, is immense. Over the last two decades there has been a growing interest in making emulsions by a new technique known as membrane emulsification. This is because it requires lesser energy as compared to the other conventional turbulence based methods like homogenization and rotor-stator systems, with the added advantage of producing droplets of a given size by just selecting the average pore size of the membrane. It is the distinguished feature of membrane emulsification that the resulting droplet size is controlled primarily by the membrane type and its pore size and not by the generation of turbulent droplet breakup. This article provides a review of the currently available emulsification processes with special focus on polymer emulsification. The main characteristics of emulsification processes including membrane emulsification process and its principles, influence of process parameters, industrial applications as well as an outlook to further improvement of the processes are discussed. [ABSTRACT FROM AUTHOR]

Published
2012

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