Volume-8 ~ Issue-11 ~ November-2015

Abstract: Esterified waxes were compounded with toluene, oleic acid, morpholine and distilled water to produce the emulsions. The emulsions produced were applied on wood and leather, which adhered and dried. The coated substrates showed decrease in water absorption coefficients compared to the uncoated surfaces. Coated leather showed better marking-off properties than the wood coated substrates. The emulsions applied on wood finishing show good absorption properties which can be used as undercoat emulsion for wood.

Keywords: emulsions,esterified waxes, marking-off properties,water absorption coefficients.

[1]. Umaru HI. Effect of Pyrolysis Temperature and Time on the Preparation of Emulsions from Waste Polyethene. (Unpublished Master's Thesis). Department of Textile Science and Technology, Ahmadu Bello University, Zaria. Nigeria: 2011.
[2]. Kogo AA. Studies on degradation of HDPE using Atmospheric Conditions and Ultraviolet Radiation (Unpublished Master's Thesis). Department of Chemistry, Bayero University, Kano. Nigeria; 1999.
[3]. Hassan TA. (2011, July 14). Impact of Indiscriminate Disposal of Polythene on the Environment. Daily Trust, p 51.

Abstract: In this study, a set of novel synthesized indole𝛽- diketo acid, diketo acid and carboxamide derivativeswas investigated by quantitative structure–activity relationship (QSAR) analysis using semi-empirical (PM3) based descriptors. The best molecular descriptors identified were LogP, polar area corresponding to absolute values of electrostatic potential greater than 75 (P-area(75)), Energy (E), Minimum values of electrostatic potential (as mapped onto an electron density surface) (MinEIPot), Polar surface area and Maximum values of electrostatic potential (as mapped onto an electron density surface) (MaxEIPot) that contributed to the anti-HIV activity of the indole𝛽- diketo acid, diketo acid and carboxamide derivatives as independent factors.

[1] I. Daniela, C. Luminita, F. Simona, and M. Mircea, A quantitative structure–activity relationships study for the anti-HIV-1 activities of 1-[(2-hydroxyethoxy)methyl]-6--(phenylthio)thymine derivatives using the multiple linear regression and partial least squares methodologies. Journal of the Serbian Chemical Society 78 (4), 2013, 495–506.

[2] B. Jan, S. Miguel, E. De Clecq., et al. Pyridine N-oxide derivatives: unusual anti-HIV compounds with multiple mechanisms of antiviral action. Journal of Antimicrobial Chemotherapy 55, 2005, 135-138.

[3] O.S Pedersen and E.B Pedersen, Non-nucleoside reverse transcriptase inhibitors: the NNRTI boom. Antiviral Chemistry & Chemotherapy 10, 1999, 285–314.

[4] K.K Sahu, V. Ravichandran, K.J Prateek, S. Simant, et al. QSAR Analysis of Chicoric Acid Derivatives as HIV–1 Integrase Inhibitors. Acta Chim. Slov., 55, 2008, 138–145.

[5] R. Hadanu and Syamsudin. Quantitative Structure-Activity Relationship Analysis of Antimalarial Compound of Mangostin Derivatives Using Regression Linear Approach. Asian Journal of Chemistry 25 (11), 2013, 6136-6140.

Abstract: The study examined the physicochemical and heavy metal analysis of municipal water supply along the distribution channels from source (raw water) to end user points of Kaduna metropolis. Water samples were collected from the raw water sources of the treatment plants in the metropolis (Malali and Barnawa water works), treated water from the treatment plant reservoirs, the three booster stations (Kawo, Lugard Hall and Tudun Wada) and randomly from residential areas which includes; Malali, Barnawa, Tudun Wada, Marafa, Kabala costain, Badiko, Kurmin Mashi and UnguwanSunusi area of the metropolis.

[1] Diwakar , J., Yami, K.D., Prasai, T. Assessment of Drinking water of Bhaktapur municipality Area in Premonsoonseason.Scientific world. Vol .6(6), 2008 [2] WHO.(1996) "Guideline for Drinking water Quality Recommendation." pp: 16-17.

[3] Mark, W.R.,Ximing Cai and Sarah,A.C. World water and wood to 2025:dealing with scarcity. washington DC: intrnatiinal food policy research inatitute,2002

[4] Ike, E.E and Ugudunlunwa, F.X.O, History and philosophy of Science, University of Jos Consultancy limited Jos, 1999,134-136

Abstract: Determination of spin multiplicity is very important for identification of spin state of different molecules or ions. But, the conventional method of prediction of spin multiplicity by using formula (2S+1) is time consuming. So, in this manuscript, I tried to show a rapid and simple method for prediction of spin multiplicity value without calculating the total spin quantum number(S=Σs). This method is only applicable for homo and hetero nuclear diatomic molecules and ions having total electron (01-20). Keywords: Even electron number, Molecules, Odd electron number, Spin Multiplicity value, Spin State, Total electron number, Value of 'l'..

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