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12 results for “Refractory”
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Research ArticleOpen accessEvery word in the titleLeaching of a Nigerian Refractory Gold Ore Using Aqua RegiaOluwasanmi Samuel Teniola, Abraham A. Adeleke, Simeon Ademola Ibitoye, Moshood Deinde ShituIn this research, refractory gold ore from Imogbara deposit in Iperindo area of Osun state Nigeria were collected systematically from various segments of the deposits at different depths to obtain a set of samples that truly represent the deposits. The 50 kg sample collected was subjected to panning in a flowing river to obtain about 1 kg-upgraded sample. The upgraded … …American Journal of Engineering and Applied Sciences, Vol. 15, Issue 1 · 13 Mar 2022 · 7,457 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of Various Combustible Materials on Insulating Properties of Refractory BricksIsiaka Olajide Odewale, Ebere Monica Ameh, Victor Tyonenge Dhave Amaakaven et al.The effect of various combustible materials on insulating properties of refractory bricks produced from Enugu fire clay and Ekebedi clay has been studied. This is aimed at determining the most favourable combustible material for different composition(s). The clays with combustible materials were used to compose different samples labeled A-G with varying percentages of combustible materials at reducing rate of 5% … …International Journal of Structural Glass and Advanced Materials Research, Vol. 4, Issue 1 · 22 Jul 2020 · 6,046 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleInvestigation into the Use of Electrochemical Extraction to Draw Gold from Refractory OresBagdaulet Kenzhalyevich Kenzhaliyev, Zamzagul Duisenovna Dosymbaeva, Renata Ramilevna Iskhakova, Essen Nurgalievich SuleimenovThis paper studies the possibility of extracting gold by electrochemical leaching through the use of a sodium thiosulfate solution. In this regard, the requirements for environmentally sound technologies play a huge and vital role. Low extraction ratios and metal losses increase the cost of this process significantly and therefore it is necessary to reduce or prevent these disadvantages. Dissolution of … …American Journal of Applied Sciences, Vol. 12, Issue 11 · 17 Nov 2015 · 6,681 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleA Case of Refractory Salmonella Spondylodiscitis in an Immunocompetent Patient Treated Via an Extracavitary Approach, Corpectomy and Placement of Expandable CageKimon Bekelis, Oren Gottfried, Zyia L. Gokaslan et al.Problem statement: Salmonella spondylodiscitis is a rare condition that is more prevalent in patients with sickle cell disease or immunosuppression. However, it can also be found in immunocompetent patients. It usually responds well to proper antibiotics. However, surgery is rarely indicated when the infection is refractory to antibiotics, the spine is destabilized or there is an epidural component that is … …American Journal of Infectious Diseases, Vol. 6, Issue 2 · 30 Jun 2010 · 7,533 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleProduction of Silica-refractory Bricks from White SandGazze AlmarahleAt present, no refractories are produced in Jordan, but large quantities are imported for use in the lining of furnaces and kilns in the metallurgical industries.The aim of this study is to initiate a program of research for production of silica-refractory bricks from local materials.The raw material, which has been used in this study was white sand. This sand contains … …American Journal of Applied Sciences, Vol. 2, Issue 1 · 31 Jan 2005 · 7,332 accessesView PDFCite
Research ArticleOpen accessIn the abstractDistribution of Alleles and Genotypes of ACE2 Gene Polymorphisms (rs2285666 and rs35803318) and Association with COVID-19 Among Populations in KazakhstanAnar Bisseneva, Konstantin Li, Gayane Pogossyan, Valeriya ProtasThere is still no definitive confirmation regarding the association between ACE2 gene polymorphisms and COVID-19. This study was conducted to analyze the distribution of alleles and genotypes of the ACE2 gene rs2285666 and rs35803318 two polymorphisms and their possible association with COVID-19 among two ethnic groups, namely, the Kazakhs and Eastern Slavs, residing within the same geographic area in the … …OnLine Journal of Biological Sciences, Vol. 24, Issue 1 · 31 Oct 2023 · 4,942 accessesView PDFCite
Research ArticleOpen accessIn the abstractMetabolic Markers of Insulin Resistance in Feline Hypertrophied Myocardium. Insulin Resistance in Heart FailureOleinikov Dmitrii ArkadievichInvestigation of myocardial tissue concentration of ATP, glucose transporters 1 and 4, pyruvate dehydrogenase, hexokinase 2, insulin receptor and adropin proteins, determining metabolic changes and possible insulin resistance in feline myocardium with hypertrophic phenotype. This is the pilot study for metabolic markers determination. Eighteen cats were studied, divided into 3 groups: Without cardiac disease (n = 5), cats with hypertrophic … …American Journal of Animal and Veterinary Sciences, Vol. 15, Issue 4 · 13 Nov 2020 · 6,327 accessesView PDFCite
Research ArticleOpen accessIn the abstractSorption Extraction of Noble and Non-Ferrous Metals from Process Leaching SolutionsBagdaulet Kenzhalyevich Kenzhaliyev, Renata Ramilevna Iskhakova, Zamzagul Duisenovna DosymbayevaIn view of the annual increase in ore processing output for low grade or refractory gold-bearing ores, as well as recoverable raw materials, stricter requirements for completeness of gold extraction and environmental safety, the interest is rising in possible alternatives to substitute the cyanide process used in gold mining practice. One of such alternatives is to convert metals into solutions … …American Journal of Applied Sciences, Vol. 12, Issue 11 · 18 Nov 2015 · 7,050 accessesView PDFCite
Research ArticleOpen accessIn the abstractRAPID DEGRADATION OF AZO DYES USING NANO-SCALE ZERO VALENT IRONNabila Rahman, Zainal Abedin, M. Ali HossainIn the present study, nano-scale Zero Valent Iron (NZVI) was synthesized in ethanol medium by the method of ferric iron reduction using sodium borohydride as a reducing agent under atmospheric conditions. The obtained iron nanoparticles are mainly in zero valent oxidation state and remain without significant oxidation for hours. A systematic characterization of NZVI was performed using XRD, SEM and … …American Journal of Environmental Sciences, Vol. 10, Issue 2 · 8 Apr 2014 · 8,599 accessesView PDFCite