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A spectrofluorimetric method based on complex formation between Zn2+ ions and 5-(4-flourophenyl)-quinolin-8-ol has been developed for the rapid determination of trace levels of zinc ions. The method is sensitive and selective. The complex formed emit strongly at 535nm with excitation wavelength at 394nm. Complexation formation was optimized by studying the effect of pH, molar ratio of the metal to...
Ascorbic acid (AsAc) was tested to evaluate its ability to reverse the oxidative stress induced by envenoming. Test groups of rats were envenomed with sub-lethal doses (4.0mg/kgs.c.) of Bitis arietans venom (BaV) whilst, single doses (500mg/kg, orally) of AsAc were pre-administered in half of them. Blood samples were collected within three periods and levels of lipid peroxidation (LPO) and total-SH...
This paper is devoted to the study of a new graph, called mk-graph and denoted by mk(G), that arises from a simple graph G by k successive iterations of a special kind of construction. We provide some of its topological indices such as Wiener index, Hyper-Wiener index, Wiener polarity, Zagreb indices, Schultz and modified Schultz indices and Wiener-type invariant. Some Formulas concerning classical...
This paper presents a semi-analytical method for solving fractional differential equations with strong terms like (exp, sin, cos,…). An auxiliary parameter is introduced into the well-known Picard’s method and so called controlled Picard’s method. The proposed approach is based on a combination of controlled Picard’s method with Simpson rule. This approach can cover a wider range of integer and fractional...
Antibiotics represent a global environmental problem due to their role in the increasing of antimicrobial resistance. Therefore, the removal of antibiotics from wastewater has received unrivalled attention in the recent years. Several technologies including the biodegradation process have been applied for this purpose. However, the potential of bacterial biomass in the biosorption of antibiotics has...
The soluble form of starch nanoparticle (SNP) is used for its advantage to encapsulate the antibiotics. In this study, SNP encapsulated antibiotics were introduced to the bacterium, Streptococcus pyogenes and the inhibitory effect was studied. The preparation of SNP loaded antibiotics was carried out using microemulsion nanoprecipitation method which does not require sophisticated equipment, hazardous...
Three Gemini quaternary ammonium surfactants based on polyethylene glycol have been prepared and characterized using FTIR and 1HNMR spectra. The effect of ethylene oxide units’ number on the steel corrosion in 1.0M HCl has been estimated using weight loss, polarization and electrochemical impedance spectroscopy. The Gravimetric technique has been done at three different temperatures 25, 40 and 55°C...
This study describes the digestive enzyme profiles from foregut contents of the blue swimming crab, Portunus pelagicus (L.), from Straits of Johor, Malaysia. Adult male (mature and immature) and female (ovarian maturation stages 1–4) blue swimming crabs were assayed for the presence of digestive enzymes (protease, trypsin, amylase and lipase) in the foregut. The results show that in some instances,...
In this paper, a fourth order integro-differential arising in the modeling of suspension bridge. A hybrid Genetic Algorithm (GA) and Nelder-Mead (NM) optimization technique is employed along with collocation finite element method and Optimal Homotopic Asymptotic Method. The solutions are compared with existing solutions. A excellent comparison is obtain results are shown, graphs and tables are shown.
The principal object of this paper is to present a natural further step toward the mathematical properties and presentations concerning the two variable Laguerre matrix polynomials defined in (Bin-Saad, Maged G., Antar, A. Al-Sayaad, 2015. Study of two variable Laguerre polynomials via symbolic operational images. Asian J. of math. and comput. research, 2(1), 42–50). Series expansions, integral transforms...
In this paper, we shall establish sufficient conditions for the uniform asymptotic stability and boundedness of solutions of a certain third order vector nonlinear non-autonomous differential equation with multiple deviating arguments, by using a Lyapunov function as basic tool. In doing so we extend some existing results. Example is given to illustrate our results.
A new basic formulation of electroless Cu–P plating using sodium hypophosphite as reducing agent was developed at different concentration of NiSO4. So, the effect of temperature solution, pH and immersion time on deposition rate was also investigated. It is found that the deposition rate increases with nickel sulphate concentration and temperature and decreases with immersion time. The cyclic voltammetry...
Using the Exp-function method, we derive exact solutions of the nonlinear space–time fractional Telegraph equation and space–time fractional KPP equation. As a result, we obtain many exact analytical solutions including hyperbolic function. The fractional derivative is described in Jumarie’s modified Riemann–Liouville sense. This method is very effective and convenient for solving nonlinear fractional...
The modified regularized long wave (MRLW) equation is numerically solved using Fourier spectral collection method. The MRLW equation is discretized in space variable by the Fourier spectral method and Leap-Frog method for time dependence. To validate the efficiency, accuracy and simplicity of the used method, four cases study are solved. The single soliton wave motion, interaction of two solitary...
The use of Persea americana has been studied as an alternative source of activated carbon for the removal of dyes from wastewater. Chemical activation using phosphoric acid was employed for the preparation of the activated carbon (C-PAN). The BET surface area and the total pore volumes were found to be 1593m2/g and 1.053cm3/g, respectively. This study investigates the effect of some parameters like,...
A dense and mesoporous ceramic from locally sourced Nigerian clay under fracture-strength test were produced and the reliability analysis of the fractured strength was conducted using a three-parameter Weibull probability distribution. The samples were prepared by addition of starch (0–20wt%), pressed at 60MPa and fired at 1300°C. The as-received Nigerian clay, dense and porous ceramic were characterized...
Using the well-known solitary wave ansatz method, we obtain new exact bright and dark soliton solutions for two nonlinear Schrödinger equations, namely, the perturbed nonlinear Schrödinger equation with the Kerr law nonlinearity and a higher order nonlinear Schrödinger equation which describe the propagation of ultra short pulses in nonlinear optical fibers. The parameters of the soliton envelope...
The number of diabetes mellitus (DM) patients is one of the major concerns worldwide. As one of the main mechanisms of DM pathology is the involvement of oxidative stress, here we investigate the antioxidant capacities of frankincense (FRN) to treat or reduce the DM complications in the brain cortices of DM rats. Animals were segregated into four groups, the control group, FRN group given a dose of...
Nitrofurantoin (NIT) is used as an antibiotic for the treatment of urinary tract infection. To determine the concentration of NIT in pharmaceutical preparations, two cost-effective extraction-free flow injection (FI) spectrophotometric methods (direct and indirect) were studied. The direct FI method was based on the reaction of NIT with potassium hydroxide and the formation of a red/orange coloured...
To isolate fungal communities from coastal areas of the Red Sea in Saudi Arabia and identify and classify them by molecular techniques. Samples were collected from the seaside of the Red Sea in Jeddah, Saudi Arabia during March 2012 and stored in sterile screw cap bottles for further analysis. Phenotypic and genotypic characterization of fungal isolates were done using standard techniques. Eight fungal...
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