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All published articles 118073

Kinetics and Mechanism of Malachite Green Oxidation by Hypochlorite Ion in Aqueous Acidic Medium

S. O. Idris, A. Tanimu, J. F. Iyun & Y. Mohammed · Chemical Science International Journal · 2014

The kinetic investigations of the redox reaction between malachite green, MG+, and hypochlorite ion, ClO–, were carried out in aqueous HClO4 medium at [H+] = 1x10–3 mol dm–3, µ = 0.1 mol dm–3, T =  25±1°C. The reaction showed a stoichiometry  of  1:2, which conforms to the equati...

Research Article 10.9734/ACSJ/2015/12705

Presence of Camptotheca in the Red River Delta (North Vietnam) during the Holocene Revealed by Palynological Studies

Nguyen Thuy Duong, Pim de Klerk & Hans Joosten · European Journal of Medicinal Plants · 2014

Aims: Evaluation of the presence of the important medicinal tree genus Camptotheca in the Red River Delta (northern Vietnam) during the Holocene. Place and Duration of Study: Institute of Botany and Landscape Ecology (Greifswald University), between March 2003 and May 2006. Metho...

Open access Research Article 10.9734/EJMP/2015/14153

Threshold Analysis of Wavelet Based Fingerprint Feature Extraction Methods on Multiple Impression Dataset

P. Amoako-Yirenkyi, N. K. Frempong, J. K. Appati, J. B. Hafron-Acquah & I. K. Dontwi · Journal of Advances in Mathematics and Computer Science · 2014

In recent years, fingerprint recognition has been moving through series of evolutions with the intent to decrease the False Acceptance Rate (FAR) and the False Rejection Rate (FRR) in order to achieve minimum Equal Error Rate (EER) while increasing recognition rate. In practical...

Open access Research Article 10.9734/BJMCS/2015/13000

Bilateral Retrobulbar Optic Neuritis Caused by Varicella Zoster Virus in a Patient with AIDS

Jose F. Duda & Jose G. Castro · Journal of Advances in Medicine and Medical Research · 2014

Aims: To report on a case of bilateral retrobulbar optic neuritis in a patient with acquired immune deficiency syndrome (AIDS) caused by varicella-zoster virus (VZV); and to review the literature focusing on: cases reported, epidemiology, pathophysiology, diagnosis and treatment....

Open access Research Article 10.9734/BJMMR/2015/14259

In-vitro Evaluation of Cytotoxic and Anthelmintic Activity of Luffa acutangula, Luffa aegyptiaca and Momordica cochinchinensis

Md. Mosiqur Rahman, Ashik Ahmed, Saibal Saha Sunny, Md. Samiul Huq Atanu, Abdullah Faruque & Md. Sohel Rana · Journal of Pharmaceutical Research International · 2014

Aims: The study was designed to investigate cytotoxic and anthelmintic activity of aerial parts of Luffa acutangula (L.) Roxb. (Family: Cucurbitaceae, locally known as ‘Jhinga’), Luffa aegyptiaca Mill. (Family: Cucurbitaceae, locally known as ‘Dhundul’) and Momordica cochinchinen...

Open access Research Article 10.9734/BJPR/2014/4613

Somatic Embryogenesis and Plantlet Regeneration from Protoplast Culture of Stevia rebaudiana

Marisol Lopez-Arellano, Seema Dhir, Nilmarie Colón Albino, Anais Santiago, Terrica Morris & Sarwan K. Dhir · Biotechnology Journal International · 2014

Somatic Embryogenesis and Plantlet Regeneration from Protoplast Culture of Stevia rebaudiana In order to develop a high-efficiency and reproducible regeneration protocol for Stevia protoplasts, various factors such as type and concentration of enzymes, osmoticum, incubation time,...

Open access Research Article 10.9734/BBJ/2015/13884

Existence and Structure of Entire Large Positive Radial Solutions for A Class of Quasilinear Elliptic Systems

Dianpeng He & Zuodong Yang · Journal of Advances in Mathematics and Computer Science · 2014

In this paper, we consider the problem for the existence of the entire positive radial solutions of quasilinear elliptic system   And, we also consider the following quasilinear elliptic system:   Using the theory of ordinary differential equation, iteration method and comparison...

Open access Research Article 10.9734/BJMCS/2014/6354

Level of Organochlorine Pesticides Residue in Fish, Water and Sediment in Biu Dam (Reservoir) Borno State Nigeria

D. Y. Shinggu, O. N. Maitera & J. T. Barminas · International Research Journal of Pure and Applied Chemistry · 2014

The health risks posed by organochlorine compounds to the total environment have continued to elicit concern among researchers in developing countries worldwide. Hence, this study focused on investigating the levels of Organochlorine pesticides residues in water sediment and fish...

Open access Research Article 10.9734/IRJPAC/2015/13199

Optimization and Kinetic Study for the Removal of Chromium (VI) Ions by Acid Treated Sawdust Chitosan Composite Beads

N. M. I. Alhaji & K. M. Tajun Meera Begum · International Research Journal of Pure and Applied Chemistry · 2014

Aims: To study the adsorption efficiency of acid-treated sawdust composite beads (SDCCB) for Cr(VI) ions and to optimize the process variables using Response Surface Methodology (RSM). Study Design: Preparation of SDCCB, Characterization of SDCCB, Study of influence of variables...

Open access Research Article 10.9734/IRJPAC/2015/13834

Kinetics and Mechanism of the Reaction of Malachite Green and Dithionite Ion

S. O. Idris, A. Tanimu, J. F. Iyun & Y. Mohammed · International Research Journal of Pure and Applied Chemistry · 2014

The kinetics of the oxidation of malachite green, MG+, by dithionite ions, S2O42- have been studied spectrophotometrically in an aqueous acid free medium. The investigation was carried out under pseudo- first order conditions of an excess of dithionite concentration. Reaction con...

Open access Research Article 10.9734/IRJPAC/2015/12428

Cost-Price Squeeze in Export Oriented Crop Production: Welfare Implication for Commercialized Smallholder Tea Producers in Kenya

B. L. Kiplimo, L. Inyanje, V. Ngeno, T. Kipkurgat & M. C. Lopokoiyit · Journal of Economics, Management and Trade · 2014

Tea production, a leading export crop in Kenya and produced largely by smallholders was analyzed to determine how the input and output prices adjust to both inflation and exchange rates. It was hypothesized that prices received and prices paid by farmers are not cointegrated and...

Open access Research Article 10.9734/BJEMT/2015/12398

An Econometric Analysis of Determinants of External Debt in Pakistan

Rehmat Ullah Awan, Akhtar Anjum & Shazia Rahim · Journal of Economics, Management and Trade · 2014

Present study examined macroeconomic determinants of external debt in Pakistan using annual time series data from 1976 to 2010.Cointegration technique has been used to find long run equilibrium relationship while short run dynamics have been analyzed using ECM. By applying ARDL m...

Open access Research Article 10.9734/BJEMT/2015/8837

An Empirical Analysis of Monetary Policies on Stock Price Distortion in Nigeria: Implications on Real Sector

Onafalujo Akinwunmi Kunle & Eke Patrick Omoruyi · Journal of Economics, Management and Trade · 2014

A market economy functions through competitive model where pricing is the control and indirect agent of economic development. Imperfect markets however result from various influences that are dominant enough to creating information asymmetry thereby causing unsystematic disequili...

Open access Research Article 10.9734/BJEMT/2015/13851

Instrumental Analysis of Foods: Inductively Coupled Plasma Mass Spectrometry for Determination of Metals in Cereals and Fast Ion Chromatography Analysis for Minerals in Sport Drinks

Ronald Bartzatt & Conrad Martinez · Advances in Research · 2014

Aims: Foods are analyzed for their content for important reasons that include: Adherence to government regulations, nutritional labeling, authentication, inspection (for grading), safety, quality control and detection of adulterants. Study Design: Inductively coupled plasma mass...

Open access Research Article 10.9734/AIR/2015/13579