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Sorrel (Hibiscus sabdariffa) Seed Oil Extraction Optimization and Quality Characterization

E. Betiku & T. F. Adepoju · Chemical Science International Journal · 2013

Aims: This study was aimed at separating seed oil from sorrel (Hibiscus sabdariffa) oilseeds using application of solvent extraction method. The process was optimized using response surface methodology and the quality of the seed oil was determined. Methodology: Optimization of o...

Open access Research Article 10.9734/ACSJ/2013/2777

A Combined Experimental Green Flow-Injection Procedure and Computational Analysis to Determine Amino Acids

Samy Emara, Tarek Aboul-Fadl, Abdel Nasser El-Shorbagy, Maha Kamal, Walaa Zarad & Mohamed Abdel Kawi · Chemical Science International Journal · 2013

Aim: Methods of pollution reduction and human health protection would be more successful if the fields of green analytical chemistry and computational analysis could come together. This overlap would help to minimize, or even eliminate the use and generation of hazardous substanc...

Open access Research Article 10.9734/ACSJ/2013/4923

Photocatalytic Activity of Titanium Oxide – Iron Oxide Coatings Prepared by Plasma Spraying

P. Ctibor, V. Stengl & Z. Pala · Chemical Science International Journal · 2013

This study examines the photocatalytic activity of coatings produced by atmospheric plasma spraying (APS). The spraying tool used is a water-stabilized plasma gun WSP. The TiO2– Fe2O3 powder with and without Na2SiO3 additive was agglomerated to build particles suitable for feedin...

Open access Research Article 10.9734/ACSJ/2013/4745

Synthesis and Studies on Some Spiro and Fused of Quinone Derivatives

H. A. Soleiman, A. K. Khalafallah & A. M. H. Sorry · Chemical Science International Journal · 2013

Some new Spiro β-lactam, Spiro thiazolidine derivatives were synthesized by the reaction of new Schiff bases (5a-c, 8a-c ) with chloroacetyl chloride and/or mercaptoacetic acid to give new Spiro β-lactam (6a-c, 9a-c ) and new Spiro thiazolidinone derivatives (7a-c, 10a-c ) . Also...

Open access Research Article 10.9734/ACSJ/2013/3213

Thieno[2,3-d]Pyrimidin-4-Ones. Part 3.* Electrophilic Ipso-Substitution Reactions of Methyl and Methoxycarbonyl Groups

B. Zh. Elmuradov, Kh. A. Bozorov, А. Zh. Kurbanbayeva, I. S. Ortikov, Kh. M. Bobakulov, N. D. Abdullayev, A. Yili2, H. A. Aisa & Kh. М. Shakhidoyatov · Chemical Science International Journal · 2013

Interactions of 5,6-dimethyl- (1), 3,5,6-trimethylthieno[2,3-d]pyrimidin-4(3H)-ones (2) and 2,3-dimethyl- (5-7), 2-methyl-3-methoxycarbonylthieno[2,3-d]dihydropyrrolo-, -tetrahydropyrido-, tetrahydroazepino[1,2-a]pyrimidin-4-ones (14-16) with nitrating mixture were investigated....

Open access Research Article 10.9734/ACSJ/2013/4203

Spectrophotometric and Chromatographic Methods for the Estimation of Raloxifene Hydrochloride in Bulk and Pharmaceutical Formulations

Bahia A. Moussa, Ramzia I. El-Bagary & Essam Eldin A. Osman · Chemical Science International Journal · 2013

Aim: To develop simple, accurate and precise spectrophotometric and chromatographic methods for the estimation of Raloxifene Hydrochloride (RXF) in pure and pharmaceutical dosage forms. Study Design: Spectrophotometric and chromatographic methods. Place of Study: Pharmaceutical C...

Open access Research Article 10.9734/ACSJ/2013/4598

The Study of Nucleophlic and Electrohilic Reaсtions of Bis- and 3-Substituted Chroman-2, 4-Dions

A. A. Shkel, O. A. Mazhukina & O. V. Fedotova · Chemical Science International Journal · 2013

Aims: Here we study nucleophilic and electrophilic reactions of bis- and condensed 3-substituted chroman-2,4-dions to produce polychromeno (thio)pyrans and trioxaoxonium benzonaphthotetracene salts. Place and Duration of Study: Saratov State University, Chemistry Institute, betwe...

Open access Research Article 10.9734/ACSJ/2013/4645

Extraction, Preconcentration and Spectrophotometric Determination of Ethylene Glycol in Antifreeze Samples

Hijran Sanaan Jabbar & Azad Tawfiq Faizullah · Chemical Science International Journal · 2013

Aims: Using a simple and sensitive spectrophotometric method for the indirect determination of ethylene glycol by Malaprade reaction. The method was based on the extraction and preconcentration of iodine. Place and Duration of Study: Samples: Antifreeze samples were purchased fro...

Open access Research Article 10.9734/ACSJ/2013/3675

Synthesis and a Preliminary Characterization of Poly(Propylene)Imine Hexadecylamine Dendrimer (DAB-Am-16) Modified with Methyl Acrylate

Devaney Ribeiro do Carmo, Tayla Fernanda Serantoni da Silveira, Rosângela Silva de Laurentiz, Urquisa Oliveira Bicalho, Leandro Martins, Newton Luiz Dias Filho & Leonardo Lataro Paim · Chemical Science International Journal · 2013

This paper describes the reaction of a Poly(propylene)imine hexadecylamine dendrimer (DAB-Am-16) with methyl acrylate. The modified dendrimer obtained (DKMA) was characterized by vibrational spectroscopy, nuclear resonance magnetic (13C), thermogravimetry and scanning electron mi...

Open access Research Article 10.9734/ACSJ/2013/3818

Investigation of the Optical and Dielectric Properties of the Urea L-malic Acid NLO Single Crystal

Sagadevan Suresh · Chemical Science International Journal · 2013

Single crystals of urea L-malic acid were grown by the slow evaporation technique. The single crystal X-ray diffraction analysis reveals that the crystal belongs to the monoclinic system. The optical transmission study reveals the transparency of the crystal in the entire visible...

Open access Research Article 10.9734/ACSJ/2013/3503

XRD Characterization of Sand Deposit in River Niger (South Eastern Nigeria)

Ekpunobi Uche Eunice, Duru Chiamara Blessing & Obumselu Fabian · Chemical Science International Journal · 2013

In this study the sand deposits from River Niger in Anambra State, South Eastern Nigeria, were characterized for its potential utilization as industrial raw materials for ceramics and enamel wares. Physical, chemical and mineralogical characteristics of the sand sample (A) were d...

Open access Research Article 10.9734/ACSJ/2013/3250

Effect of Different Disinfecting Agents on Heavy Metals During Water Treatment

Mohammed A. Hussein, Abd EL-hafeez El- Seheimy, Mohamed El Sayed, Mahmoud M. El haloty, Wael M. Kamel, Yasser H. Mohamed & Noha E. Ibrahim · Chemical Science International Journal · 2013

Aims: The aim of this study to evaluate the effect of huwa-san and chlorine as disinfecting agents on heavy metals during water treatment. Place and Duration of Study: Department of Biochemistry, Faculty of Pharmacy, October 6 university (Medical Unit IV) and Inorganic laboratory...

Open access Research Article 10.9734/ACSJ/2013/2711

Deposition and Characterization of Silver Oxide from Silver Solution Recovered from Industrial Wastes

U. E. Ekpunobi, O. K. Okwukogu, A. I. Anozie, A. S. Ogbuagu, V. I. Ajiwe & C. I. Nweze · Chemical Science International Journal · 2013

Aims: To recover silver from industrial waste and use its solution in silver oxide deposition. Study Design: Extraction, electrodeopsition on different substrates, XRD and topographical characterizations. Place and Duration of Study: Sample: x-ray films were collected from Anambr...

Open access Research Article 10.9734/ACSJ/2013/3214

An Overview on Manganese in Nature

Gina Vasile Scăeţeanu, Leonard Ilie & Cătălina Călin · Chemical Science International Journal · 2013

Manganese is the most 12th prevalent element on Earth that occurs in 11 oxidation states (from -3 up to +7). An essential element present in all living organisms, manganese is required for growth, development and maintenance of health. It is naturally present in soil, plants, wat...

Open access Research Article 10.9734/ACSJ/2013/3748

Characterization Studies of Aluminum Alloy Substrate Surfaces Treated By Oxyanion Esters of Α-Hydroxy Acids and Their Salts

Volkan Cicek · Chemical Science International Journal · 2013

In this investigation, first, substrate coupons of commonly used alloys of Aluminum, which are 2024, 6061 and 7075 alloys, were immersed in solutions of inhibitors such as gluconate esters having the formula of (M)x(hydroxyacid)y(M‘aOb)z combining constituents that are already kn...

Open access Research Article 10.9734/ACSJ/2013/3823