نتایج جستجو برای: pyrrolidine 1 dithiocarboxylic acid ammonium
تعداد نتایج: 3308511 فیلتر نتایج به سال:
A simple and rapid method has been developed for the determination of ascorbic acid in fruit and pharmaceutical products. The method is based on the measurement of the reaction rate between ammonium molybdate and ascorbic acid in acidic media. The reaction was monitored spectrophotometrically at 800 nm by fixed-time and variable-time methods. The calibration graph was linear in the range of...
a simple and rapid method has been developed for the determination of ascorbic acid in fruit and pharmaceutical products. the method is based on the measurement of the reaction rate between ammonium molybdate and ascorbic acid in acidic media. the reaction was monitored spectrophotometrically at 800 nm by fixed-time and variable-time methods. the calibration graph was linear in the range of 5 0...
The Nuclear factor kappa-light-chain-enhancer of activated B cells (NF-kB) represent family of structurally-related eukaryotic transcription factors which regulate diverse array of cellular processes including immunological responses, inflammation, apoptosis, growth & development. Increased expression of NF-kB has often been seen in many diverse diseases, suggesting the importance of genomic de...
In the mol-ecular structure of title compound, C(18)H(13)NO(2), the succinimide ring is orientated away from the plane of the anthracene moiety by 71.94 (4)°. The crystal structure features three different types of inter-molecular inter-actions, viz. C-H⋯O, C-H⋯π and π-π bonds. Mol-ecules along the b axis stack on each other as a result of π-π inter-actions which have a centroid-centroid distan...
Structural features and dynamical behaviour of the copper(ii) bis-complexes with glycine, d-alanine, d-valine, l-serine, l-aspartic acid, l-glutamic acid, l-lysine, l-proline, and sarcosine were studied by combined EPR and NMR relaxation methods. The cis and trans isomers were unambiguously assigned and characterized by EPR data. It was found that addition of a salt background has an influence ...
‘Payizeh Znouz’ apple trees have a high capacity for fruit bearing, leading to a small fruit size. Thinning of flowers and fruits can considerably increase the quality of the fruits in prunus trees by improving the size, color, and other features related to the quality of the fruit. An experiment was conducted to study the effects of ammonium thiosulphate (0.25%, 1% and 1.75%) at different stag...
The effects of increasing ammonium concentrations in combination with different pH levels were studied on five heathland plant species to determine whether their occurrence and decline could be attributed to ammonium toxicity and/or pH levels. Plants were grown in growth media amended with four different ammonium concentrations (10, 100, 500 and 1000 micromol l(-1)) and two pH levels resembling...
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