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7 results for “calcite”
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Research ArticleOpen accessIn the keywordsSustainable Study of Self-Healing Concrete in Hot Desert ClimateBatoul Chamali, Moayyad Al-Nasra, Taher M. Abu-LebdehThe hot and dry desert climate is characterized by high temperature and high humidity. This affects the strength of concrete negatively by the difficulty of providing proper curing and by generating early micro-cracks due to the high temperature. These two issues have been addressed in this study by adding calcite precipitating bacteria to deal with the micro-cracks and by adding … …American Journal of Engineering and Applied Sciences, Vol. 12, Issue 2 · 16 May 2019 · 8,041 accessesView PDFCite
Research ArticleOpen accessIn the keywordsCharacterization of Maturity Level in Laying Hen Manure by Chemical and Thermogravimetric AnalysisAlice Dall’Ara, Francesco Antolini, Laura Billi et al.This study aims at investigating maturity levels in manure from laying hens in order to encourage its agronomic re-utilization. In fact the use of unstable/insufficiently mature manure could potentially damage both soils and crops. Effective, easy to reproduce methods are needed in order to assess bio-stabilisation and maturity levels, particularly for biomass that has not undergone conventional composting. This study … …American Journal of Environmental Sciences, Vol. 4, Issue 4 · 31 Aug 2008 · 6,540 accessesView PDFCite
Research ArticleOpen accessIn the abstractSIMULTANEOUS OPTIMISATION OF DRYING PARAMETERS OF CERAMIC BODIESSalah Mahmoudi, Ezzeddine Srasra, Fouad ZargouniThis study deals with the mineralogical, physico-chemical and geotechnical analyses of representative Aptian clays in the north-east of Tunisia. X-ray diffraction reveals a predominance of illite (50-60 wt.%) associated to kaolinite and interstratified illite/smectite. The accessory minerals detected in raw materials are quartz, calcite and Na-feldspar. The average amounts of silica, alumina and alkalis are 52, 20 and 3.5 wt.%, … …Current Research in Geoscience, Vol. 4, Issue 1 · 1 Jul 2014 · 6,991 accessesView PDFCite
Research ArticleOpen accessIn the abstractElectron Spin Resonance Study of Tertiary Sediments in Mae Moh Basin, Lampang ProvinceTidarut Vichaidid, Supanee Limsuwan, Pichet LimsuwanElectron Spin Resonance (ESR) studies have been carried out on Tertiary sediment collected from Mae Moh basin, well known for its lignite mining in Lampang province of the northern Thailand, a stratigraphic bedding plane in the sediment that formed in geological time of about 13 million years ago. Each individual sedimentary bed has its own unique assemblage and occurs in … …American Journal of Applied Sciences, Vol. 9, Issue 9 · 14 Jul 2012 · 7,172 accessesView PDFCite
Research ArticleOpen accessIn the abstractFull Scale Tests of Short-Term Municipal Solid Waste Incineration Bottom Ash Weathering Before Landfill DisposalFranco Marchese, Giuseppe GenonProblem statement: Natural weathering is the most economic method of treatment in order to reduce the release of heavy metals present in the residue. Approach: The aim of the study was to optimize the minimum weathering times that were useful to reduce the lead release to within the Italian limits for landfill disposal. The mechanism of short-term weathering of MSWI … …American Journal of Environmental Sciences, Vol. 5, Issue 4 · 31 Aug 2009 · 7,153 accessesView PDFCite
Research ArticleOpen accessIn the abstractHydrochemical Differentiation of Salinisation Process of the Water in Endoreic Semi-Arid Basin: Case of Rémila Basin, AlgeriaHouha Belgacem, Kherici Nacer, Kachi Slimane, Valles VincentThe aim of this study is to determine and treat a hierarchical basis of the various mechanisms responsible for the space variation of the water quality in a endoreic semi-arid basin. The water chemistry showed a large variability in space and time. The total dissolved solid (TDS) in water increases from upstream to downstream due to the effect of the … …American Journal of Applied Sciences, Vol. 5, Issue 7 · 31 Jul 2008 · 7,307 accessesView PDFCite
Research ArticleOpen accessIn the abstractAssessment of Suspended Sediments Concentration in Surface Waters, Using Modis ImagesMobasheri Mohammad RezaRemote sensing from air-borne and space-borne sensors have proved to be a useful method for Suspended Sediment Concentration (SSC) estimation as it provides an instantaneous and synoptic view of suspended sediments that would otherwise be unavailable. The reason for the success of remote sensing in such surveys is the strong positive relationship that exists between SSC and remotely sensed water … …American Journal of Applied Sciences, Vol. 5, Issue 7 · 31 Jul 2008 · 7,006 accessesView PDFCite