نتایج جستجو برای: silicate mineral

تعداد نتایج: 76299  

Journal: :EDIS 2022

The publication presents recommendations for calcium silicate application sugarcane grown on Florida mineral soils along with supporting information. Written by J. Mabry McCray, and published the UF/IFAS Agronomy Department, August 2022.

رهگشای, محمد, شفائی مقدم, هادی , عموئی اردکانی, طاهره , مکی زاده, محمد علی,

The injection of I-type granitoid bodies (Hosh intrusion) with calc-alkaline affinity into Lower Cretaceous limestones (Taft Formation) has produced the various types of related skarns and marbles. Thereby, those skarns formed can be undoubtedly divided into four groups, clinopyroxene-plagioclase skarns, clinopyroxene skarns, clinopyroxene- vesuvianite skarns and moreover garnet skarns. Additio...

1998
F. HOROWITZ

Optical interferometric monitoring of spin coating (optospinography) has allowed close observation of the temporal evolution of a thin silicate sol film (typically at 2000 rpm, 100 Hz data acquisition). The kinematic viscosity data obtained, using a simple analytical model, are validated with those from a mineral oil standard, with agreement well within the experimental uncertainties. For spin ...

2012
Libor Sitek Josef Foldyna Petr Martinec Jiří Klich Miroslav Mašláň

Original scientific paper High-velocity water jet expanded into many fields of human activity due to its unique properties. Besides already traditional technological processes it begins to find its way also to the comminution of mineral particles. The paper analyzes the possibility of particle comminution using an abrasive mixing head used to generate high-velocity abrasive water jet and an imp...

شمعانیان, غلامحسین, رقیمی, مصطفی , قلی پور, محسن , مهدوی آکردی, مهدی ,

Portland cement could be produced by heating the raw materials (clay, lime stone) about 1500°C which clinker will be formed. The geochemistry and mineralogical studies of raw materials, clinker, Portland cement and dust have been carried out by optical microscopy, X-ray diffraction and X-ray florescence. The results of spectrometry indicate the presence of calcite mineral in limestone, montmori...

شریفی, رضا, مُر, فرید ,

Mineralogical and geochemical investigations indicate two general stages of skarnification i.e, prograde and retrograde stages in the Mohammad-Abad district, south west of Yazd province. Metasomatic skarn (Prograde stage) occurred with precipitation of anhydrous calc-silicate mineral assemblages (andradite and diopside- hedenbergite) within the temperature ranges of 470 to 550 ºC. During the re...

2009
Marc B. Schenker Kent E. Pinkerton Diane Mitchell Val Vallyathan Brenda Elvine-Kreis Francis H.Y. Green

BACKGROUND Agricultural workers are exposed to airborne pollutants, including organic and inorganic (mineral) dusts. OBJECTIVES Lung autopsy specimens from consecutive coroner's cases of Hispanic males in Fresno County, California, (n = 112) were obtained to determine whether mineral dust exposure in agricultural work leads to pneumoconiosis. METHODS The left lung was fixed by inflation. We...

ارزانی, کاوه, سرپولکی, حسین , قهرمانی, داود ,

The Kalibbar Nephelincyanite comes from a region in East Azerbaijan. Its mineral and chemical composition is nearly similar to an Indian feldspar which is used in some of Iranian tile and ceramic industries. The procreation and behavior parameters of Kalibbar Nephlincyanite with the Indian feldspar in production of Monokotorata tile engob, has been studied comparatively. Nephelincyanite has sho...

2013
Jason R. Price Michael A. Velbel

Biotite is a common constituent of silicate bedrock. Its weathering releases plant nutrients and consumes atmospheric CO2. Because of its stoichiometric relationship with its transformational weathering product and sensitivity to botanical activity, calculating biotite weathering rates using watershed mass-balance methods has proven challenging. At Coweeta Hydrologic Laboratory the coupling of ...

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