zeolites due to their structures can be used as molecular sieves for purification of materials and solutions. zeolites with phi and sod structure are so common and applicable for this purpose. hydroxy sodalite and phillipsite are the more abundant members of zeolites which display good selectivity for very small molecules and some ions such as sr, pb, zn, cu and rb. there is not any pure natura...

The proposed Mars Science Laboratory (MSL) mission is intended to deliver a large rover to the Martian surface within 10 km of the target site. This paper presents computational fluid dynamics (CFD) predictions of forebody heating rates for two MSL entry configurations with fixed aerodynamic trim tabs. Results are compared to heating on a 70-deg sphere-cone reference geometry. All three heatshi...

The rapid growth of multiple parallel synthesis in our laboratories has created a demand for a robust, easily accessed automated system for solution-phase reaction work-up, since the manual work-up of large numbers of small-scale reactions is both time-consuming and tedious, and is a rate limiting step in the generation of large numbers of compounds for test. Work-up in chemical organic synthes...

in this study the synthesis of molybdenum oxide nano-whiskers with circular cross-section is performed. in some areas, it was observed that also some whiskers have open tips exhibiting their hollow structures. these whiskers have side dimensions ranging 2-5 μm with an average diameter in the nanometer rang. the structure suggested the vapor-liquid-solid growth mechanism (vls). scanning elect...

Lagerqvist, U. 2016. Solution-Chemical Synthesis of Cobalt and Iron:Zinc Oxide Nanocomposite Films. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 1356. 85 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN 978-91-554-9520-6. The potentially most important challenges today are related to energy and the environment. New materials and methods ar...

Nowadays green synthesis of metal nanoparticles is a developing area of research. In this study, titanium dioxide nanoparticles were biosynthesized using an aqueous solution of Echinacea purpurea herba extract as a bioreductant. This is novel and interesting method for synthesis of TiO2 nanoparticles. The prepared titanium dioxide nanoparticles were characterized using ultraviolet–visible spect...

The analysis of mechanical properties and corrosion resistance industrial alloy AMg6 composite material AMg6-10%TiC obtained by self-propagating high-temperature synthesis is carried out. It shown that the existence a carbide phase subsequent heating up to 230 ℃ allows increasing hardness 17 % maintaining high re-sistance composite.