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Comparative Studies of Isotherm and Kinetics on the Adsorption of Cr (VI) and Ni (II) from Aqueous Solutions by Powder of Mosambi Fruit Peelings

R. Hema Krishna · International Research Journal of Pure and Applied Chemistry · 2013

This study focuses on the use of powder of Mosambi fruit peelings (PMFP) as an inexpensive and efficient adsorbent to remove Cr(VI) and Ni (II) from aqueous solutions. The influence of physico-chemical key parameters such as the initial metal ion concentration, pH, agitation time...

Open access Research Article 10.9734/IRJPAC/2014/5765

Application of Newton’s Zero Order Caustic for Analysis and Measurement: Part-I Absorbance

Antonio A. Garcia, Luis Nuñez, Charles John, Habtom Hadish, Victor Orioke & Vladimiro Mujica · International Research Journal of Pure and Applied Chemistry · 2013

When light is incident upon a liquid solution droplet containing a light absorbing solute and it is formed into a spheroid shape, absorbance can be measured and related to concentration of the light absorbing species in a manner analogous to standard spectrophotometry. However, t...

Open access Research Article 10.9734/IRJPAC/2014/5897

Azamacrocycle Complexes: Synthesis and Xanthine Oxidase and Antioxidant Activity

A. Bushra Begum, V. Lakshmi Ranganatha, T. Prashanth, M. S. Asha, Farhan Zameer, Raghavendra Hegdekatte & Shaukath Ara Khanum · International Research Journal of Pure and Applied Chemistry · 2013

Aims: Gout is caused by high uric acid in the blood that leads to excess uric acid crystallizing in the joints causing swelling and pain. Uric acid is produced from the breakdown of the purine which is released when cells die or introduced from the food we eat. The enzyme that he...

Open access Research Article 10.9734/IRJPAC/2014/5355

Kinetics and Mechanism of Oxidation of Gabapentin by N-bromosuccinimide in Aqueous Alkaline Medium. Comparing to the Kinetics of Oxidation by N-bromosuccinimide in Aqueous Acid Medium

Alaa Eldin Mokhtar Abdel-Hady · International Research Journal of Pure and Applied Chemistry · 2013

The kinetics of oxidation of gabapentin (GBP) by N-bromosuccinimide (NBS) in an alkaline medium has been investigated. The oxidation reaction showed unique kinetics that greatly differed on going from acid to base medium.  In an acid medium (pH=2.52), the reaction rate showed fir...

Open access Research Article 10.9734/IRJPAC/2014/6175

1HNMR and X-Ray Crystallographic Structure Determination of 4aR*,5R*,10bR*-5-(7- Methylcoumarin- 4yl)-3,4,4a,5,6,10b-Hexahydro- 2H-Pyrano[3,2-c]Quinoline

M. Kayalvizhi, G. Vasuki, Shriniwas D. Samant & Kailas K. Sanap · Physical Science International Journal · 2013

The title compound, C22H21NO3 belongs to the monoclinic system, space group P21/c  with  a = 9.3400 (3) Å, b = 22.1653 (8) Å, c = 8.7044 (3) Å, α = γ = 90˚ , β = 105.549 (1)˚,             V = 1736.07 (10) Å3, Z = 4, Dc = 1.3291(1) Mg /m3, F(000) = 736, R = 0.0358 and wR = 0.0959,...

Open access Research Article

Metal Oxide Buffer Layer Thickness Influence on the Performance of Pentacene Thin Film Transistors

Zhe Sun, Wei Peng, Yaya Chen & Wei Hu · Physical Science International Journal · 2013

High performance top contact organic thin-film transistors (TC OTFTs) with bilayer electrodes (MoO3/Au) are fabricated. The interface properties of metal electrodes with organic active layer have an important effect on the OTFTs performance. We demonstrate the MoO3 layer is worki...

Open access Research Article

Identifying the Most Effective Orientation of the CFRP Laminate for Strengthening the Tension Face of the RC T- Beams

Muhammad Mukhlesur Rahman & Mohd Zamin Jumaat · Physical Science International Journal · 2013

Most of the researches on strengthening so far had been focused on rectangular reinforced concrete (RC) beams. Researches on strengthening of RC T-beams are rather limited. This study focuses on the application of carbon fibre reinforced polymer (CFRP) laminate for strengthening...

Open access Research Article

Photovoltaic System Equipped with a DC/DC Buck Converter and a MPPT Command Ensuring an Optimal Functioning Independently of System Perturbations

E. Baghaz, M. Melhaoui, M. F. Yaden & K. Kassmi · Physical Science International Journal · 2013

In this paper, we analyze the conception, the realization, and the characterization of a photovoltaic system (PV) equipped by a DC/DC buck converter and an analogical MPPT controller provided with detection circuit of dysfunction and convergence of the system (CDCS). We demonstra...

Open access Research Article

The Product and the Ratio of α - μ Random Variables and Outage, Delay-Limited and Ergodic Capacities Analysis

Pushpa N. Rathie, Arjun K. Rathie & Luan C. de S. M. Ozelim · Physical Science International Journal · 2013

Historically, the algebra of random variables has been a discipline of interest to statisticians. On the other hand, in the last ve decades special functions and numerical tools have become largely available, implying other scientists to apply results regarding this area of knowl...

Open access Research Article

The Behaviour of Flexurally Strengthened RC T Beams Considering the Constraints Caused by Columns

Muhammad Mukhlesur Rahman & Mohd Zamin Jumaat · Physical Science International Journal · 2013

Most of the researches on strengthening so far has been focused on rectangular reinforced concrete (RC) beams,and  strengthening of Reinforced Concrete (RC) T-beams are rather limited. This study focuses on the application of carbon fibre reinforced polymer (CFRP) laminate for st...

Open access Research Article