Results 151 to 160 of about 558,186 (382)

New and Improved Diagnostics for Detection of Drug-Resistant Pulmonary Tuberculosis. [PDF]

open access: yes, 2011
PURPOSE OF REVIEW: Tuberculosis (TB) remains a global emergency and continues to kill 1.7 million people globally each year. Drug-resistant TB is now well established throughout the world and most TB patients are not being screened for drug resistance ...
Affolabi   +41 more
core   +1 more source

Drought-induced effects on nitrate reductase activity and mRNA and on the coordination of nitrogen and carbon metabolism in maize leaves

open access: yesPlant Physiology, 1998
Maize (Zea mays L.) plants were grown to the nine-leaf stage. Despite a saturating N supply, the youngest mature leaves (seventh position on the stem) contained little NO3- reserve.
C. Foyer   +3 more
semanticscholar   +1 more source

Denitrification, activity of bacterial flocs, and growth of a filamentous bacterium in relation with the bulking of activated sludge [PDF]

open access: yes, 1978
Activated sludge with poor settling characteristics is caught under the term "bulking" sludge. Various types of bulking activated sludge can be distinguished.1) Sludge containing an abundance of filamentous microorganisms.2) Sludge, characterized by ...
Krul, J.M.
core   +1 more source

Modeling the effect of copper availability on bacterial denitrification [PDF]

open access: yes, 2013
When denitrifying bacteria such as Paracoccus denitrificans respire anaerobically they convert nitrate to dinitrogen gas via a pathway which includes the potent greenhouse gas, nitrous oxide (NO). The copper-dependent enzyme Nitrous Oxide reductase (Nos)
Blyth, M.G.   +5 more
core   +1 more source

Post-translational regulation of nitrate reductase: mechanism, physiological relevance and environmental triggers.

open access: yesJournal of Experimental Botany, 2001
Assimilatory nitrate reductase (NR) of higher plants is a most interesting enzyme, both from its central function in plant primary metabolism and from the complex regulation of its expression and control of catalytic activity and degradation.
W. Kaiser, S. Huber
semanticscholar   +1 more source

Photo‐controlled Release of Urea Enables the Detection of Urea‐Urease Intermediates by cryo‐FTIR

open access: yesAngewandte Chemie International Edition, Accepted Article.
Caged compounds are a valuable tool to photocontrol the release of enzymatic substrates in a reaction. For example, caged urea molecules were proposed to control urea delivery to urease reactions and aid the determination of the catalytic mechanism of this enzyme.
Caterina Netto   +7 more
wiley   +1 more source

Synthesis of silver nanoparticles by Bacillus clausii and computational profiling of nitrate reductase enzyme involved in production

open access: yesJournal of Genetic Engineering and Biotechnology, 2018
Biogenic synthesis of silver nanoparticles using microorganisms has found interest recently since last decade because of their prospect to synthesize nanoparticles of various size, shape and morphology which are eco-friendly. Here, an eco-friendly method
Koel Mukherjee   +5 more
doaj  

Seasonal variation in the nitrogen metabolism of young Scots pine.

open access: yesSilva Fennica, 1988
Seasonal changed in total nitrogen, protein, amino acid, ammonia, nitrate and nitrite concentrations, and nitrate reductase and γ-glutamyltransferase activities in the needles, buds and shoots of young Scots pine ( L.) were studied.
Lähdesmäki, Pekka, Pietiläinen, Pekka
doaj   +1 more source

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