Ammonium dinitramide (ADN) is a promising oxidizing agent for solid rocket propellants. In situ XRD investigations of ADN and suspensions have been performed in order to understand refine the emulsion crystallization process manufacturing spherical particles (prills). The investigation revealed that melt behavior depends on quality, humidity, maximum temperature cycles, suspension agents. Furth...

Bis(2,4,6-triisopropylphenyl) tellurone (Tip(2)TeO(2)) was prepared, fully characterized by spectroscopic and X-ray crystallographic analyses, as well as theoretical calculations, and found to be an effective oxidizing agent that was capable of converting alcohols into carbonyl compounds under mild reaction conditions.

In previous papers (1, 2) the conditions for the oxidation of lactic acid to acetaldehyde, quantitatively, and the accurate determination of the latter, were described. It was found that the oxidation to acetaldehyde appears to depend upon factors such as the concentration of oxidizing agent added, the acidity of the solution, the concentration of MnS04, and probably also the amount of lactic a...

bioleaching is the extraction of metals from their ores through the use of microorganisms. inthis process, the use of native bacteria leads to achieve more yields of metals. so, in the presentstudy, native sulfur-oxidizing bacterium in potentiality of uranium extraction was isolated fromghachin mine in iran and identified by partial gene sequencing. for this purpose, the watersamples were colle...

In this work, we present an efficient one-pot method for the synthesis of three new azo-isoxazoline derivatives (4a–c) from aromatic aldehydes, hydroxylamine hydrochloride and 4-(allyloxy)azobenzene. Thus, were synthesized via 1,3-dipolar cycloaddition using sodium dichloroisocyanurate (SDIC) as eco-friendly inexpensive oxidizing agent under ultrasound cavitation in water a green solvent. The d...

Solar radiation and nutrient pulses regulate the ecosystem's functioning. However, little is known about how a greater frequency of pulsed nutrients under high ultraviolet radiation (UVR) levels, as expected in the near future, could alter the responses and interaction between primary producers and decomposers. In this report, we demonstrate through a mesocosm study in lake La Caldera (Spain) t...

If thioctic acid is an intermediate in photosynthesis closely related to the primary photochemical act as proposed by Calvin and Barltrop,I it should be possible to realize experimental conditions under which the concentration of thioctic acid limits the quantum efficiency of photosynthesis as well as the closely related Hill reaction. Conditions under which the amounts of thioctic acid and oxi...