Bacillus subtilis uses glutamine as the best source of nitrogen. In the absence of glutamine, alternative nitrogen sources such as ammonium can be used. Ammonium utilization involves the uptake of the gas or the ammonium ion, the synthesis of glutamine by the glutamine synthetase and the recycling of the glutamate by the glutamate synthase. In this work, ammonium transport in B. subtilis was st...

RATIONALE Because of the threat of bombings using improvised explosives containing ammonium nitrate (AN), law enforcement and intelligence communities have been interested in stable isotope techniques for tracking and discriminating AN sources. Separate analysis of the AN component ions ammonium and nitrate would add discriminatory power to these techniques. METHODS Ammonium ions in dissolved...

The result indicates the possibility of creating methods to stimulate growth rate microalgae by extremely high frequency electromagnetic radiation (EHF EMF). Pollution quarry waste water with inorganic nitrogen compounds (ammonium, nitrate, nitrite) is an important problem in mining industry. Biological treatment use plant organisms and microorganisms show efficiency require less financial labo...

The efficiency in water treatment by granulated complexes formed from the clay bentonite with (i) micelles of cations octadecyltrimethyl-ammonium (ODTMA) or (ii) liposomes didodecyldimethyl-ammonium (DDAB) was investigated. bentonite–ODTMA were synthesized three variations: I. mass ratio 68/32, which resulted an excess positive charge half cation exchange capacity and is denoted “ordinary”; II....

To date urea and ammonium are two nitrogen (N) forms widely used in agriculture. Due to a low production cost, is the N form most applied However, its stability soil depends on activity of microbial ureases, that operate hydrolysis into ammonium. In subjected fast volatilization ammonia, an environmental loss contributes atmospheric pollution impacts farm economies. Based these considerations, ...

We have developed a method where, after glutaraldehyde fixation, human hair shafts and insect cuticles are treated with ammonium thioglycolate (ATG) to improve ultrastructural staining. Conventional transmission electron microscopic (TEM) preparations do not distinguish the A-layer and the exocuticles of hair shafts. However, after ATG treatment, the A-layer appears in higher contrast. ATG trea...