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...

We have come to divide bacteria and viruses into filterable and nonfilterable, and we have come to think that those organisms, visible or invisible, which are smaller than the pores of our filter are filterable. That size, however, cannot be the sole criterion we have known from the behavior of certain aniline dyes.* Thus Victoria blue, a basic dye, will not pass a Berkefeld filter while Congo ...

This study synthesized highly pure silica nanoparticles from the northeast Algerian Sahara dunes sand as a low-cost source using simple and environmentally friendly method. The were extracted sodium silicate solution precursor without employing any additive agents. silica’s crystalline structure, chemical composition, bonding, microstructure, elemental analysis, thermal optical characteristics ...

Sand dripping in 1 dimensional Sand Pile Model is rst studied. Patterns and signals appear. Their behaviors and interactions are explained and asymptotic approximations are made. The total collapsing time of a single stack of sand is linear in function of the number of grains.

Titanium dioxide (TiO2) has been widely applied as a photocatalyst for wastewater treatment due to its high photocatalytic activity and it can remove various harmful organic pollutants effectively. Under heated system, however, TiO2 is prone agglomeration that decrease abilities photocatalyst. In order overcome the increase thermal resistance, addition of silica (SiO2) supporting material propo...

Abstract The motion of particle clouds (i.e., sediment clouds) usually can be found in engineering applications such as wastewater discharge, land reclamation, and marine bed capping. In this paper, a series laboratory tests are conducted on coral sand to investigate the shape feature single mixing processes clouds. is measured quantified. experimental results demonstrate that particles tends s...

Abstract Thecemententerprisebetheessentialhotspotintendedfornaturalcontamination because it admissions a tremendous measure of energy during the creationas well as deliveries ton CO2which adds to an unnatural weather change. Reducethese impacts, concrete is some degree subbed among blend Silica Fume (SF) and Fly Ash (FA) sand by Quarry Dust (QD) with addition steel fibre. This paper centered on...

Greensand casting is a process that uses mixture of silica sand with addition control additions which are bentonite clay and the presence water. Control influence mechanical properties greensand mould, for this study focuses on permeability. Bentonite acts as binder activated by water to develop strength plasticity thus mould can be formed. Permeability ability gas pass through moulding aggrega...