منابع مشابه
The Development and Characterization of Zirconia-Silica Sand Nanoparticles Composites
The present study aims to develop zirconia-Silica sand nanoparticles composites through powder processing route and to study the physical properties, mechanical properties and microstructure of the composites. Zirconia based silica sand nanoparticles composite with 5, 10, 15 and 20 wt.% were developed through powder processing technique and sintered at 1500°C for two hours. A decreasing trend o...
متن کاملMortality in the UK industrial silica sand industry: 1. Assessment of exposure to respirable crystalline silica.
AIMS To develop a job-exposure matrix (JEM) from personal and static respirable crystalline silica (RCS) measurements in UK industrial silica sand workers. METHODS A total of 2429 personal and 583 static RCS dust samples were collected using cyclone samplers at seven UK quarries between 1978 and 2000. These data were combined, and analysis of variance using general linear models was used to e...
متن کاملExperimental study of applying colloidal nano Silica in improving sand-silt mixtures
Passive method is a new procedure in stabilizing loose soils. This methodology is a type of interlocking soil particles structures. In order to optimum improve in this method, it is necessary to achieve proper penetration length and increase the shear strength of parameters. Researches have shown an increased resistance to liquefaction and decreased permeability due to colloidal Nano silica inj...
متن کاملPreparation, purification, and characterization of aminopropyl-functionalized silica sol.
A new, simple, and "green" method was developed for the surface modification of 20 nm diameter Stöber silica particles with 3-aminopropyl(diethoxy)methylsilane in ethanol. The bulk polycondensation of the reagent was inhibited and the stability of the sol preserved by adding a small amount of glacial acetic acid after appropriate reaction time. Centrifugation, ultrafiltration, and dialysis were...
متن کاملEffects of asian sand dust, Arizona sand dust, amorphous silica and aluminum oxide on allergic inflammation in the murine lung.
The aggravating effects of Asian sand dust (SD) and related minerals on the allergic inflammation were examined in the murine lungs. The toxic materials adsorbed onto Asian SD, Arizona SD were inactivated by heat-treatment. ICR mice were administered mineral samples (0.1 mg/mouse) and/or ovalbumin (OVA) (1 microg/mouse) - normal saline (control), Asian SD, Arizona SD, SiO2, Al2O3, OVA, OVA + As...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: FLOTATION
سال: 1977
ISSN: 1883-9142,0427-7775
DOI: 10.4144/rpsj1954.24.2_22