نتایج جستجو برای: p h

تعداد نتایج: 1669898  

Journal: :Chemical communications 2013
Arnaud Chevalier Claire Mercier Laura Saurel Sylvain Orenga Pierre-Yves Renard Anthony Romieu

An efficient synthesis of original bio-reductive probes suitable for the detection of azoreductases from the fluorescent rhodamine 110 dye is presented. A "turn-on" green fluorescence response upon reduction of the two diazo bonds of these latent fluorophores was observed both in vitro and in the context of bacterial cultures.

2005
SUHAS DISA ADITYA GUPTA V. K. RAJASEKHAR SIPRA GUHA-MUKHERJEE

Nitrate reductase (NR) activity, induced by germination in KNO3 showed a strong rhythmicity during the early stages of germination of wheat embryos. Peaks of activity occurred approximateiy every 12 h. Tbere was no relationship hetween the amounts of nitrate in tbe embryos and enzyme activity. Tbe fluctuations in enzyme activity did not appear to be due to reversible inactivation of the enzyme....

2013
James R. Wright Paul C. Young Nigel T. Lucas Ai-Lan Lee James D. Crowley

The synthesis of a small family of six electronically and sterically modified 1,3,4-trisubstituted 1,2,3-triazol-5-ylidene gold(I) chloride complexes is described. Additionally, the corresponding trans-[PdBr2(iPr2-bimy)(1,3,4-trisubstituted 1,2,3-triazol-5-ylidene)] complexes are also generated and used to examine the donor strength of the 1,3,4-trisubstituted 1,2,3-triazol-5-ylidene ligands. A...

Journal: :Biochemistry 2010
K Danielle Kelley Lorenzo Q Olive Arina Hadziselimovic Charles R Sanders

It is shown that Methyl Red can be used as an indicator dye that changes color in Escherichia coli culture as a result of time- and cell density-dependent bleaching by azoreductase produced by the bacteria. For cell cultures that are being used to express a recombinant protein, this phenomenon can be exploited to provide a simple visual cue that cell cultures have reached an appropriate growth ...

Journal: :Journal of environmental sciences 2016
Wipasanee Tangkitjawisut Tawan Limpiyakorn Sorawit Powtongsook Preeyaporn Pornkulwat Benjaporn Boonchayaanant Suwannasilp

Nitrite accumulation in shrimp ponds can pose serious adverse effects to shrimp production and the environment. This study aims to develop an effective process for the enrichment of ready-to-use nitrite-oxidizing bacteria (NOB) inocula that would be appropriate for nitrite removal in brackish shrimp ponds. To achieve this objective, the effects of nitrite concentrations on NOB communities and n...

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