Physicochemical analysis of automobile effluent before and after treatment with an alkaline-activated montmorillonite
Publication date: October 2015 Source:Journal of Taibah University for Science, Volume 9, Issue 4 Author(s): K.G. Akpomie, F.A. Dawodu Effluents obtained from six industries were analysed for physicochemical properties. An alkaline-modified montmorillonite was used to remove heavy metals from automobile effluent. The effects of effluent pH, adsorbent dose, adsorbent particle size and contact time on adsorption were determined. Langmuir, Freundlich, Temkin and Dubinin–Radushkevich models were used to analyse equilibrium isotherms. Kinetics was analysed by the pseudo-first-order, pseudo-second-order, intra-particle...
Source: Journal of Taibah University for Science - October 5, 2015 Category: Science Source Type: research

Amino acid esters as prodrugs of an arylalkanoic acid COX inhibitor: Synthesis and biopharmaceutical and pharmacological evaluation
Publication date: October 2015 Source:Journal of Taibah University for Science, Volume 9, Issue 4 Author(s): Nilesh Prakash Nirmal, Mithun Singh Rajput, Purnima Dey Sarkar, Sampada Sinha, Amit Gupta Sulindac is an analgesic and anti-inflammatory agent. It has the general side-effects of non-steroidal anti-inflammatory drugs, owing to presence of a free carboxylic acid group. The aim of the study was to retard the adverse gastrointestinal effects of the drug. Various conjugates of sulindac were synthesized by amidation with methyl esters of 10 amino acids. The synthesized conjugates were characterized by melti...
Source: Journal of Taibah University for Science - October 5, 2015 Category: Science Source Type: research

Determination of total phenolic and flavonoid content, antimicrobial and antioxidant activity of a root extract of Arisaema jacquemontii Blume
Publication date: October 2015 Source:Journal of Taibah University for Science, Volume 9, Issue 4 Author(s): Shoib A. Baba, Shahid A. Malik We evaluated the antioxidant and antimicrobial activity of a methanolic extract of the roots of Arisaema jacquemontii. Antioxidant activity was determined in the 1,1-diphenyl-2-picryl-hydrazyl (DPPH), nitroblue tetrazolium (NBT) and ferric reducing power tests. The extract had significant antioxidant activity in all assays, with values of 64.16±0.19% in the DPPH and 62.16±0.17% in the NBT assays, and reduced Fe3+ ferricyanide complex to the ferrous form (Fe2+). Antibacterial ...
Source: Journal of Taibah University for Science - October 5, 2015 Category: Science Source Type: research

Physicochemical characterization and antibacterial activity of the leaf oil of Crotalaria pallida Aiton
Publication date: Available online 7 September 2015 Source:Journal of Taibah University for Science Author(s): Sushobhan Ukil, Subrata Laskar, Raj Narayan Roy Antibiotic resistance has led to the search for more effective antimicrobial agents among plant materials that can serve as source and template for the synthesis of new antimicrobial drugs. The current study aims to analyses the oil, extracted from the leaves of Crotalaria pallida for its physicochemical and antimicrobial properties. Leaf oil was extracted by petroleum ether (40–60°C) and its fatty acid constituents were isolated as a mixture after sapon...
Source: Journal of Taibah University for Science - September 26, 2015 Category: Science Source Type: research

Effective radiation doses from natural sources at Seila area South Eastern Desert, Egypt
Publication date: Available online 3 September 2015 Source:Journal of Taibah University for Science Author(s): Yassin. A. Abdel-Razek, Masoud. S. Masoud, Moamed.Y. Hanfi, Mohamed. S. El-Nagdy Fifty one locations were chosen at Seila area, South Eastern Desert, Egypt to evaluate the public effective doses due to the exposure to the natural sources of radiation at this area. These locations were distributed over these sites called the Passage and the Wadi. The average value of the activity concentration of the terrestrial radionuclides 238U, 232Th and 40K was found to be 41.68, 28.51 and 567.57Bqkg−1 at the Pas...
Source: Journal of Taibah University for Science - September 18, 2015 Category: Science Source Type: research