Journal of Chemistry

Papers

Voulume: 2
Issue: 2
Article No. 1
Determination of Sedimentation Rate in erengganu Coastal Water, East-Coast  of Peninsular Malaysia
KAMARUZZAMAN
Institute of Oceanography, Kolej Universiti Sains & Teknologi Malaysia, 2013, Kuala Terengganu, Terengganu (MALAYSIA)
B. Y., MOHD EFFENDY
Institute of Oceanography, Kolej Universiti Sains & Teknologi Malaysia, 2013, Kuala Terengganu, Terengganu (MALAYSIA)
A. W., WILLISON
Institute of Oceanography, Kolej Universiti Sains & Teknologi Malaysia, 2013, Kuala Terengganu, Terengganu (MALAYSIA)
K. Y. S., HASRIZAL B.S.
Institute of Oceanography, Kolej Universiti Sains & Teknologi Malaysia, 2013, Kuala Terengganu, Terengganu (MALAYSIA)
ONG, M. C.
Institute of Oceanography, Kolej Universiti Sains & Teknologi Malaysia, 2013, Kuala Terengganu, Terengganu (MALAYSIA)
Abstract :

To explore the sedimentation process in the Terengganu coastal water, 30 cm sediment cores was studied by measuring the stable element lead (Pb). Applying the 210Pbexcess method, average sedimentation rates of 0.21 cmyr-1 was obtained.  The estimated sedimentation rates obtained was comparable to other related studies in South China Sea and other coastal areas elsewhere.  Assuming that the sedimentation rate values are accurate, this implies that the sediments in the upper 30 cm were deposited during the last 143 years ago.
 

Keyword : sedimentation rate, Terengganu coastal water
DOI : juc
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Article No. 2
Inhibition of Albumin Denaturation and Anti-nflammatory Activity of Bio-Active Molecule Fluorobenzothiazole Comprising Sulfonamido Pyrazole Derivatives
Hitendra N. Yadav
P.G. Department of Pharmaceutical Chemistry, S.C.S. College of Pharmacy, Harapanahalli - 583131 (INDIA)
G. M. Sreenivasa
P.G. Department of Pharmaceutical Chemistry, S.C.S. College of Pharmacy, Harapanahalli - 583131 (INDIA)
E. Jayachandran
P.G. Department of Pharmaceutical Chemistry, S.C.S. College of Pharmacy, Harapanahalli - 583131 (INDIA)
Kore Srinivas
P.G. Department of Pharmaceutical Chemistry, S.C.S. College of Pharmacy, Harapanahalli - 583131 (INDIA)
Abstract :

Fluorobenzothiazole comprising sulfonamido pyrazole derivatives have been synthesized and evaluated for their antimicrobial activity.  Structures of these products have been established by IR, 1HNMR data.  Significant antimicrobial activities were observed for some members of this series.
 

Keyword : Fluorobenzothiazole, Sulfonamido, Pyrazole, Cyanoacetamide, Bis-s-methyl ethylene cynoacetamide
DOI : juc
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Article No. 3
Glass reinforced composites based on epoxy sinand furfural-methyl ethyl ketone resin system
Mahendrasinh Raj
Plastics Technology Section Institute of Science & Technology for Advanced Studies & Research (ISTAR) Vallabh Vidyanagar, Anand, Gujrat (INDIA)
Prashant Anthony
Plastics Technology Section Institute of Science & Technology for Advanced Studies & Research (ISTAR) Vallabh Vidyanagar, Anand, Gujrat (INDIA)
Lata Raj
M.B. Patel Science College, Anand, Gujrat (INDIA)
Abstract :

An epoxy-furfural-methylethylketone matrix resin (FM resin) system has been developed to prepare glass reinforced composites. The polycondensation reaction of furfural and methyl ethyl ketone which derived furfural-methylethylketone resin (FM resin) in a single step under different experimental condition. This FM resin is used for blending with epoxy resin i.e diglycidyl ether of bisphenol A (DGEBA) in presence of various catalysts such as triethylamine (TEA), Diamino diphenylmethane (DDM) and p-toluene sulphonic acid (PTS). Glass reinforced composites based on FM resin and epoxy resin were prepared and characterized by measuring its mechanical and chemical resistance properties
 

Keyword : Furan resin, epoxy resin, DSC curing study, glass fibre, Glass fibre reinforced composites.
DOI : juc
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Article No. 4
Study of Alkyd Resin Emulsions for Low VOC Eco-friendly Surface Coatings
D.A. Raval
Campus Director, Yogidham, Sarovaday Kelavani Samaj, Lakavad Road, Rajkot, Gujrat (INDIA)
Archana Shah
Sr. Lecturer, Department of Chemical Science, N.V. Patel College of Pure and Applied Sciences, Vallabh, Vidyanagar, Gujrat (INDIA)
Randhir J. Parmar
Lecturer, Department of Paint, ISTAR, Vallabh Vidyanagar, Gujrat (INDIA)
Sibbansingh
Lecturer, Department of Paint, ISTAR, Vallabh Vidyanagar, Gujrat (INDIA)
Abstract :

Owing to the pollution implications of the volatile organic compounds (VOCs or organic solvents) present in coating resins, the current focus of the surface coating industries is towards the use of low VOC binders. Since alkyds are the workhorse of the paint industries, they were chosen for the study. Present study is aimed at optimising the ingredients of alkyd resin emulsions so as to have low VOC, shelf stable and performance oriented coatings. Various experimental sets were designed by changing the oil length, surfactants amount, and organic phase to water phase ratios. The resulting emulsions were studied for their stabilities. Also the films were coated on test panels and their performance was compared with their solvent based counter parts.
The films were evaluated for adhesion, flexibility, impact resistance, scratch hardness, chemical resistance as well as drying performance at ambient temperature. The study revealed certain excellent features of alkyd emulsion [low VOC] as surface coating binders.       

Keyword : Resin Emulsions, Eco-friendly
DOI : juc
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Article No. 5
Synthesis of some antimicrobial 3-Aryl-1,2,4- triazolo-8-methyl-thiadiazepin-6-ones
H.K. Singh (hemnt38singh@yahoo.com
Department of Chemistry, T.D.P.G., College, Jaunpur, (V.B.S.) Purvachal Universtiy, Jaunpur (U.P.) 222002 (INDIA)
S. Singh
Department of Chemistry, T.D.P.G., College, Jaunpur, (V.B.S.) Purvachal Universtiy, Jaunpur (U.P.) 222002 (INDIA)
Abstract :

Cyclodehydration of thiocarbohydrazide with substituted benzoic acid gives, 5-Aryl-4-amino-3-mercapto-1,2,4 triazole.  The requisite 3-Aryl-1,2,4-triazolo-8-methyl-thiadiazepin-6-ones were prepared by refluxing ethyl acetoacetate and 5-Aryl-4-amino-3-mercapto-1,2,4-triazole. The screening results are correlated with the structural features of the tested compounds.        

Keyword : Synthesis of some antimicrobial , ones
DOI : juc
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Article No. 6
Relation between turbidity and total dissolved solids based on flow rate of the godavari water
D. Dasharath
Department of Chemistry, Girraj Government College, Nizamabad - 503 002 (AP)
E. Narsimha Reddy
Rural Water Supply Division Nizamabad
Abstract :

The relation between turbidity and the Total Dissolved Solids (TDS) was measured basing on the flow rate of the Godavari water during the period pre- mansoon (July 2005) to post-mansoon (November 2005).  It is observed that, in pre mansoon season during heavy rainfall, the flow rate of the Godavari water increases causing decrease in TDS and increase in turbidity, where as in post mansoon season due to decrease in flow rate of water turbidity decreases and TDS value increases.
The heavy flow rate of river water neither allows settling the turbid soil nor does allow the salts to dissolve in water. Hence turbidity in water increases, simultaneously the TDS value decreases. The soil sample of the Godavari was also analyzed and found low Total Soluble Salts (TSS) in pre mansoon and high in post mansoon season.
 

Keyword : Turbidity, Flow Rate
DOI : juc
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Article No. 7
Effect of solvents on the fluorescence  haracteristics of 6-Anilinopurine and 6-piperidinopurine
Zanariah Abdullah (zana@um.educ.my)
Chemical Synthesis and Modeling Research Group, Department of Chemistry, University, Universtiy of Malaya - 50603 Kuala Lumpur
Maizathul Akmam A. Bakar
Chemical Synthesis and Modeling Research Group, Department of Chemistry, University, Universtiy of Malaya - 50603 Kuala Lumpur
Mohd Adlan Mohd Shariffuddin
Chemical Synthesis and Modeling Research Group, Department of Chemistry, University, Universtiy of Malaya - 50603 Kuala Lumpur
Zaharah Aiyub
Chemical Synthesis and Modeling Research Group, Department of Chemistry, University, Universtiy of Malaya - 50603 Kuala Lumpur
Abstract :

6-Chloropurine which was obtained commercially was used as the precursor for the preparation of 6-anilinopurine and of 6-piperidinopurine. Fluorescence studies were carried out in 75% ethanol, acetonitrile and ethyl acetate.  Both compounds showed the highest fluorescence peak  in ethyl acetate whereby 6-piperidinopurine showed fluorescence peak at 373 nm, when excited at 315 nm, and 6-anilinopurine showed fluorescence peak at 447 nm when excited at 321 nm. The fluorescence intensity of 6-anilinopurine and 6-piperidinopurine decreased with time. 

Keyword : haracteristics , Anilinopurine
DOI : juc
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Article No. 8
Synthesis of some antimicrobial 2-Aryl-3,9-dibromo-1,3- diazolo-(3,2-b)-primido [4, 5-d] -5,7-diaryl-8-oxo-pyrimidine-7-thiones.
H.K.Singh (hemnt38sing@yahoo.com)
Department of Chemistry, T.D.P.G., College, Jaunpur, (V.B.S.) Purvachal Universtiy, Jaunpur (U.P.) 222002 (INDIA)
S. Singh
Department of Chemistry, T.D.P.G., College, Jaunpur, (V.B.S.) Purvachal Universtiy, Jaunpur (U.P.) 222002 (INDIA)
Abstract :

The reaction of 2-Amino-6,8-diphenyl-5-oxo-pyrimido [4,5-d] pyrimidine-7-thions with a-halo ketones offers  2-Aryl-1,3-diazolo-(3, 2-b)-pyrimido [4,5-d]-5,7-diaryl-8-oxo-pyrimidine-7-thiones, which on bromination results their bromo analogues  2-Aryl-3,9-dibromo-1,3-diazolo-(3, 2-b)-pyrimido [4,5-d]-5,7-diaryl-8-oxo-pyrimidine-7-thiones.                    

Keyword : antimicrobial, pyrimidine
DOI : juc
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Article No. 9
SPECTRAL AND BIOCIDAL STUDIES ON SOME MIXED LIGAND COMPLEXES OF LANTHANIDES
Suresh K. Agarwal
Department of Chemistry, L.R.P.G. Colleg, Sahibabad, Ghaziabad, 201 005 (INDIA)e
Abstract :

Mixed ligand complexes of Ln (III) chlorides and nitrates possessing the general formula [Ln LL' x (H2O)n], where Ln = La, Pr, Nd and Sm, X = Cl, NO3, n = 3 in chtoro complexes of La, Pr, Nd, n = 1 in chloro complex of Sm, n = 2 in nitrato complexes of La, Pr, Nd, n = 0 in nitrato complex of Sm, LH = 2 - acetyl pyridyl - pyrazine carboxylic hydrazone (apph) and L' H = 2 thiophene acetic acid (taa), have been prepared and characterized on the basis of analytical, conductance, magnetic, spectral and thermal data. The complexes are non­electrolytic in nature. IR spectra suggest that both the ligands are bidentate in nature. The complexes have been found to possess antibacterial activity.        

Keyword : SOME MIXED LIGAND, LANTHANIDES
DOI : juc
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Article No. 10
SYnthesis AND ANTIMICROBIAL ACTIVITY OF SOME 3,8- DISuBSTItuted-5H -s- TRIAZOLO (3,4-b) PYRAZOLO (5,4-e) -­1,3,4 -THIADIAZINE DERIVATIVES
A.K. Yadav
Department of Chemistry, T.D. College, Jaunpur (U.P.) INDIA
Daroga Singh
Department of Chemistry, T.D. College, Jaunpur (U.P.) INDIA
Abstract :

Condensation of 4-bromo-3-aryl pyrazol-5(4H)-one (1) with 3-substitued-4-amino-5­-mercapto-1,2,4-triazoles (2) in ethanol in the presence of pyridine afforded 3,8-disubstitued-5H-s-triazolo (3,4-b) pyrazolo (5,4-e) -1,3,4- thiadiazines (3). The antifungal and antibacterial activity of synthesized compounds have also been evaluated.   

Keyword : ANTIMICROBIAL ACTIVITY , Synthesis
DOI : juc
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