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Hydrothermal synthesis of Zinc Stannate nanoparticles for antibacterial applications
Publication date: Available online 29 December 2015 Source:Journal of Taibah University for Science Author(s): J. Emima Jeronsia, L. Allwin Joseph, M. Mary Jaculine, P. Anne vinosha, S. Jerome Das A facile and economical hydrothermal method was adapted to synthesis spinal Zn2SnO4 nanoparticles with cubic structure. The crystallography and optical properties of as synthesised nanoparticles have been studied using XRD (X-ray diffraction) and (UV-Vis) UV-Visible spectroscopy. The morphology of the nanoparticles has been revealed via FESEM (Field emission scanning electron microscopy). The synergetic antibacteria...
Source: Journal of Taibah University for Science - January 11, 2016 Category: Science Source Type: research

Antibacterial activity of Miswak (Salvadora persica L.) extracts on oral hygiene
This study investigates the presence of antimicrobial agents in Miswak extracts based on their polarity in different solvents. Results of this study shows that Miswak contains more than one kind of antimicrobial agents that inhibits the growth of both gram positive and negative bacteria. Zone of inhibition for three different extracts was measured on E.coli, Staph. aureus, L. acidophilus, Strep. mutans and P. aeruginosa, results shows a strong antimicrobial activity in aqueous extract and less activity in alcoholic and nonpolar extracts. (Source: Journal of Taibah University for Science)
Source: Journal of Taibah University for Science - January 11, 2016 Category: Science Source Type: research

CFD studies of soot production in a coflow laminar diffusion flame under conditions of micro-gravity in fire safety
Publication date: Available online 29 December 2015 Source:Journal of Taibah University for Science Author(s): Arnaud Mbainguebem, Ruben Mouangue, Barthélemy Tikri Bianzeube This work which is in the fire safety framework is focused on a numerical study of the production of soot in a laminar diffusion flame, under different conditions of micro-gravity in unsteady regime. It is intended to evaluate the temperature and rate at which the production of soot is predominant, to quantify their concentrations and volume fraction in dispersion. It has been accomplished by modification of the ReactingFOAM application sour...
Source: Journal of Taibah University for Science - January 11, 2016 Category: Science Source Type: research

Comparative evaluation of long-term storage techniques on viability and virulence of Alternaria solani
Publication date: Available online 30 December 2015 Source:Journal of Taibah University for Science Author(s): M.C. Ravikumar, Heminder Singh, H.G. Rajkumar The study was conducted to test the viability and pathogenicity of different forms of A. solani inoculum stored at different conditions and time intervals for a period of 16 months. The aim was to confirm the survival period of pathogen in soil and to determine the simplest method to maintain inoculum in laboratory for further studies. The cultures stored at 5°C for 2, 4, 8 and 16 months were pathogenic, while cultures stored at room temperature turned non-p...
Source: Journal of Taibah University for Science - January 11, 2016 Category: Science Source Type: research

Hydromagnetic flow and radiative heat transfer of nanofluid past a vertical plate
Publication date: Available online 7 January 2016 Source:Journal of Taibah University for Science Author(s): B. Ganga, S. Mohamed Yusuff Ansari, N. Vishnu Ganesh, A.K. Abdul Hakeem Hydromagnetic flow of an incompressible viscous nanofluid past a vertical plate in the presence of thermal radiation is investigated both analytically and numerically. The radiative heat flux is described by the Rosseland diffusion approximation in the energy equation. The governing non-linear partial differential equations are converted into a set of ordinary differential equations by suitable similarity transformations. The resulti...
Source: Journal of Taibah University for Science - January 11, 2016 Category: Science Source Type: research

Geoelectrical parameter based multivariate regression borehole yield model for predicting aquifer yield in managing groundwater resource sustainability
This study developed a GIS - based multivariate regression (MVR) yield rate prediction model of groundwater resource sustainability in the hardrock geology terrain southwestern, Nigeria. With this model, the aquifer yield rate potential prediction that are often trivialized in groundwater resources development can be well managed economically. The proposed model relates the borehole yield rate inventory of the area to the geoelectrical derived parameters. Three sets of borehole yield rate conditioning geoelectrical derived parameters namely: aquifer unit resistivity (ρ), aquifer unit thickness (D) and coefficient of aniso...
Source: Journal of Taibah University for Science - January 11, 2016 Category: Science Source Type: research

“Recovery and subsequent characterization of polyhydroxybutyrate from Rhodococcus equi cells grown on crude palm kernel oil”
Publication date: Available online 25 December 2015 Source:Journal of Taibah University for Science Author(s): Nadia Altaee, Ayad Fahdil, Emad Yousif, kumar Sudesh The gram positive bacteria Rhodococcus equi was isolated from fertile soil and used the mineral salts media (MM) and trace elements to provide the necessary elements for its growth and PHB production in addition to using crude palm kernel oil (CPKO) 1% as carbon source. The gas chromatography (GC) was proved the composition of recovered biopolymer that was homopolymer polyhydroxybutyrate (PHB). The strain of the present study gave 1.43 (g/l) as dry b...
Source: Journal of Taibah University for Science - December 25, 2015 Category: Science Source Type: research

Development and Validation of HPTLC method for simultaneous estimation of Clonazepam and Paroxetine hydrochloride using DOE approach
Publication date: Available online 23 December 2015 Source:Journal of Taibah University for Science Author(s): Purvi Shah, Jalpa Patel, Kalpana Patel, Tejal Gandhi The present study deals with simultaneous multiple response optimization using the Derringer's desirability function for the development of HPTLC method for the determination of Clonazepam and Paroxetine hydrochloride in pharmaceutical dosage form. CCD was used for the optimization of chromatographic conditions in HPTLC. The independent variables used for the optimization were n-butanol content in mobile phase, chamber saturation time and distance tr...
Source: Journal of Taibah University for Science - December 23, 2015 Category: Science Source Type: research

Schiff's base derived from 2-acetyl thiophene as corrosion inhibitor of steel in acidic medium
Publication date: Available online 21 December 2015 Source:Journal of Taibah University for Science Author(s): A. Aouniti, H. Elmsellem, S. Tighadouini, M. Elazzouzi, S. Radi, A. Chetouani, B. Hammouti, A. Zarrouk The adsorption and corrosion inhibition behavior of (E)-2-methyl-N-(thiophen-2- ylmethylidene)aniline (T) at steel/1.0M HCl interface was investigated using gravimetric and electrochemical methods at 308K. Inhibition efficiency increased with increase in the concentration of new synthesized Tiophene Schiff Base. The potentiodynamic polarization studies revealed that this compound as mixed-type...
Source: Journal of Taibah University for Science - December 22, 2015 Category: Science Source Type: research

Nickel complexes of Schiff bases derived from mono/diketone with anthranilic acid: Synthesis, Characterization and microbial evaluation
Publication date: Available online 21 December 2015 Source:Journal of Taibah University for Science Author(s): Md. Rabiul Hasan, Mohammad Amzad Hossain, Md. Abdus Salam, Mohammad Nasir Uddin The nickel(II) complexes of the dibasic tridentate Schiff bases viz. Sal-AnthraH 2, HNP-AnthraH 2, HAP-AnthraH 2, HPP-AnthraH 2, Acac-AnthraH 2, Etac-AnthraH 2, Bzac-AnthraH 2, have been synthesized and characterized by IR, H1 NMR, mass and electronic spectra, magnetic and conductance studies. On the basis of analytical data four-coordinate geometry was proposed for the prepared nickel(II) complexes. The complexes have been...
Source: Journal of Taibah University for Science - December 22, 2015 Category: Science Source Type: research

Thermostable acidic protease production by Aspergillus terreus NCFT 4269.10 using chickling vetch peels
Publication date: Available online 21 December 2015 Source:Journal of Taibah University for Science Author(s): Bijay K. Sethi, Arijit Jana, Prativa K. Nanda, Pradeep K. Das Mohapatra, Santi L. Sahoo A newly isolated fungus, Aspergillus terreus NCFT4269.10 was employed in both solid state (SSF) and liquid static surface culture (LSSC) for production of protease using different agro-residues. Among different substrates appraised, chickling vetch peels (CVP) supported the enhanced production of protease both at LSSC and SSF (499.99±11U/ml; 5266.8±202.5U/gds), respectively. In presence of peptone (1%, w/v), leu...
Source: Journal of Taibah University for Science - December 22, 2015 Category: Science Source Type: research

Synthesis, characterization and anti-fungal evaluation of Ni(II) and Cu(II) complexes with derivative of 4-aminoantipyrine
Publication date: Available online 21 December 2015 Source:Journal of Taibah University for Science Author(s): Monika Tyagi, Sulekh Chandra, Prateek Tyagi, Jameel Akhtar, Arvind Kandan, Baleswar Singh Transition metal complexes of Ni(II) and Cu(II) metal ions with general stoichiometry [M(L)X]X and [M(L)SO4], where M=Ni(II) and Cu(II), L=(1E)-N-((5-((E)-(2,3-dimethyl-1-phenyl- 4-pyrazolineimino)methyl)thiophen-2-yl)methylene) -2,3-dimethyl-1-phenyl-4-pyrazolineamine and X=Cl−, NO3 − and SO4 2− have been synthesized and characterized. The synthesized ligand and metal complexes are characterized by 1HNM...
Source: Journal of Taibah University for Science - December 22, 2015 Category: Science Source Type: research

Simultaneous determination of amoxicillin and chloramphenicol and their drug interaction study by the validated UPLC method
Publication date: Available online 21 December 2015 Source:Journal of Taibah University for Science Author(s): Mohammad Nasir Uddin, Suman Das, Shakhawat Hasan Khan, Swapon Kumar Shill, Habibur Rahman Bhuiyan, Rezaul Karim A new UPLC method was developed for the simultaneous estimation of Amoxicillin and Chloramphenicol in pharmaceutical formulations. Drugs were resolved on Shim-Pack XR-ODS (2mm i.d.×50mm, particle size 2.2μm) reverse-phase column, utilizing a mobile phase of methanol: 0.0025M ammonium acetate in the initial ratio 40:60 (v/v) at a gradient program. The mobile phase was pumped at a flow ra...
Source: Journal of Taibah University for Science - December 22, 2015 Category: Science Source Type: research

Reynold's model viscosity on radiative MHD flow in a porous medium between two vertical wavy walls
Publication date: Available online 21 December 2015 Source:Journal of Taibah University for Science Author(s): A.B. Disu, M.S. Dada The two dimensional heat transfer of a free convective-radiative MHD (Magnetohydrodynamics) flow with variable viscosity and heat source of a viscous incompressible fluid in a porous medium between two vertical wavy walls was investigated. The fluid viscosity is assumed to vary as an exponential function of temperature. The flow is assumed to consist of a mean part and a perturbed part. The perturbed quantities were expressed in terms of complex exponential series of plane wave equatio...
Source: Journal of Taibah University for Science - December 22, 2015 Category: Science Source Type: research

Flame atomic absorption determination of zirconium in glass and refractory bricks after coprecipitation with aluminum hydroxide
Publication date: Available online 21 December 2015 Source:Journal of Taibah University for Science Author(s): Ardeshir Shokrollahi, Masoud Gohari A simple preconcentration method of zirconium based on coprecipitation with aluminum hydroxide prior to flame atomic absorption (FAAS) determination was established. The recovery values of analyte ions were higher than 95%. The parameters including types of hydroxide ion source for precipitation, acid type for dissolution step, amount of Al3+ ion as collector, pH, temperature, standing and centrifuge time were optimized, using 50mL of solution containing 150μg of zircon...
Source: Journal of Taibah University for Science - December 22, 2015 Category: Science Source Type: research