Search
Now showing items 11-20 of 134
Biophysical studies of the effect of high power ultrasound on the DNA solution
(
Elsevier B.V.
, 2014 , Article)
Stability and molecular size of the DNA double helical structure were studied on an aqueous solution of DNA after exposure to high power doses of continuous wave ultrasound at frequency of 20kHz. Thermal transition ...
Evaluation of pesticide residues of organochlorine in vegetables and fruits in Qatar: statistical analysis
(
Springer Verlag
, 2016 , Article)
The study aimed to examine the residues of organochlorines pesticides (OCPs) in vegetables and fruits in Qatar. A total of 127 samples was studied. Ninety percent of the imported samples recorded residues above the maximum ...
Kinetic investigations into the synthesis of disulphides via tetrathiomolybdate as a sulphur-transfer reagent
(
Kluwer Academic Publishers
, 2014 , Article)
Kinetic and mechanistic aspects of the conversion of halides to disulphides using benzyl triethyl ammonium tetrathiomolybdate as sulphur-transfer reagent were investigated. The reaction follows a 1:1 stoichiometry with ...
Synthesis, immunomodulation and cytotoxic effects of vanadium (IV) complexes
(
Bentham Science Publishers B.V.
, 2014 , Article)
Vanadium is known to exhibit several bioactivities and shows potential as a pharmaceutical drug. The current studies were conducted with the goal of synthesizing a new generation of oxovanadium(IV) complexes, investigating ...
Aldehyde dehydrogenase expression in Metaphire posthuma as a bioindicator to monitor heavy metal pollution in soil
(
BioMed Central
, 2016 , Article)
Background
Soil contamination and associated pollution plays a detrimental role in soil flora and fauna. Soil is processed and remodeled by subterranean earthworms, accordingly are referred to as soil chemical engineers. ...
Mechanism and kinetics of electrochemical degradation of uric acid using conductive-diamond anodes
(
Taylor & Francis
, 2016 , Article)
Uric acid (UA) is one of the principal effluents of urine wastewaters, widely used in agriculture as fertilizer, which is potentially dangerous and biorefractory. Hence, the degradation of UA (2,6,8-trihydroxy purine) in ...
Synthesis, characterization and spectroscopic structural studies of charge-transfer complexes of 1,4,8,11-tetraazacyclotetradecane-5,7-dione with iodine, TCNE and DDQ
(
Elsevier B.V.
, 2010 , Article)
Three novel aqueous and solid charge-transfer complexes are synthesized by the reaction of the polynitrogen cyclic n-donor 1,4,8,11-tetraazacyclotetradecane-5,7-dione (TACTDD) with the σ-acceptor iodine, the aliphatic ...
Unusual product from the acid-catalyzed one-pot, multicomponent reaction of thiocarbohydrazide, aldehydes, and phenacyl bromides
(
Taylor & Francis
, 2017 , Article)
A one-pot, three-component protocol for the synthesis of novel five-membered thiazole ring bonded to two hydrazone motifs is described. The acid-catalyzed reaction of one equivalent of thiocarbohydrazide, two equivalents ...
Alpha-glucosidase and carbonic anhydrase inhibition studies of Pd(II)-hydrazide complexes
(
Elsevier
, 2017 , Article)
This study focused on the synthesis and characterization of hydrazide ligands and their respective Pd(II) complexes and used high throughput screening to determine their α-glucosidase and carbonic anhydrase II enzyme ...
Charge-transfer complexes of 4-methylpiperidine with σ- and π-acceptors
(
Elsevier B.V.
, 2015 , Article)
The solid charge-transfer (CT) molecular complexes formed in the reaction of the electron donor 4-methylpiperidine (4MP) with the σ-electron acceptor iodine and π-acceptors 7,7,8,8-tetracyanoquinodimethane (TCNQ), ...