The nanosized silicon powder has been produced by reduction of silica with magnesium in an argon medium using both the mechanically activated self-propagating high-temperature synthesis and direct mechanochemical investigated X-ray phase analysis, Infrared spectroscopy, electron scanning microscopy, energy dispersive spectroscopy. optimal Mg:SiO2 ratio found to provide minimum content contamina...

Magnesium matrix syntactic foams (MgMSFs) are emerging lightweight materials with unique capabilities to exhibit remarkable thermal, acoustic, and mechanical properties. In the current study, glass micro balloon (GMB)-reinforced Mg were synthesized via powder metallurgy technique using hybrid microwave sintering. The processing employed in study yielded MgMSFs refined grain sizes, no secondary ...

Natural Akermanite (NAM) has been successfully prepared by a modified sol-gel method. Optimization in calcination temperature and mechanical ball milling resulted in a pure and nano-sized powder which characterized by means of scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM) and Fourier transform infrared Spectroscopy (FT–IR). Calcium nitrate, ...

1 E E E f f f f f f e e e c c c t t t o o o f f f M M M e e e c c c h h h a a a n n n i i i c c c a a a l l l d d d r r r y y y C C C o o o a a a t t t i i i n n n g g g o o o n n n t t t h h h e e e F F F l l l o o o w w w a a a b b b i i i l l l i i i t t t y y y a a a n n n d d d t t t h h h e e e W W W e e e t t t t t t a a a b b b i Abstract Dry particle coating has been used to create new...

the purpose of this study was preparation and evaluation of sustained release matrix type ocular mini-tablets of timolol maleate, as a potential formulation for the treatment of glaucoma. following the initial studies on timolol maleate powder, it was formulated into ocular mini-tablets. the polymers investigated in this study included cellulose derivatives (hec, cmc, ec) and carbopol971p. mann...

Mineralogically, acid mine drainage consists of minerals such as silica, iron silicate, magnesium, sodium, potassium and sulfide. These can undergo oxidation (especially pyrite oxidation) to form acidic salts with a pH 2.8-3.4. Moringa seed powder activity test were performed by adding 30% H2O2 coal waste water treatment; was added 2 L stirred for 50, 100, 150, 200, 250 minutes. Observations an...

Powder diffraction patterns are often calculated from structural parameters to assist in the identification of materials. To ensure that powder pattern calculations are correct, it is useful to have data to test the computer program doing the calculations. This paper contains test data for each of the crystallographic point groups and 63 of the 230 space groups. An important feature of the data...