Volume-9 ~ Issue-7 ~ July-2016

Abstract: PBI-I was synthesized by condensing 3,3'- diaminobenzidine (DAB) and Isophthalic acid(IPA) by solution polycondensation method using polyphosphoric acid (PPA). PBI-I has inherent viscosity ≥1dl/gm. Four dense membranes with different thickness were prepared by solution casting method under identical conditions using 3%(w/v) polymer solution in Dimethylacetamide (DMAc). Membranes samples of 4x4cm2 with different thickness were dipped in H3PO4 solution of various concentrations........
Keywords: Polybenzimidazole(PBI), Phosphoric acid doped membrane, Fuel cell performance evaluation

[1]. R. Kannan.Md. N.Islam.D. Rathod. M. Vijay. U. K. Kharul.P. C. Ghosh.K. Vijayamohanan. J Appl Electrochem (2008) ;38:583–590 a. Dhanraj Rathod .Meenu Vijay. Nazrul Islam .Ramaiyan Kannan .Ulhas Kharul. Sreekumar Kurungot. Vijayamohanan Pillai. J Appl Electrochem (2009);39:1097–1103 b. S.C. Kumbharkar, Md. Nazrul Islam, R.A. Potrekar, U.K. Kharul. Polymer 50 (2009) 1403–1413 c. V. Parthiban, Srinu Akula, S. Gouse Peera, Nazrul Islam,and A. K. Sahu. Energy Fuels 2016, 30, 725−734
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Abstract: 2-propionyl-amino-5-Methyl-1,3,4-thiadiazole (PAMTDA) and 2-propionyl-amino-5-ethyl-1,3,4-thiadiazole (PAETDA) and their Ni(II) and Zn(II) complexes were synthesized and characterized using LC-MS, IR, UV, ESR, 1H-NMR,(D2O exchangeable),13C-NMR and TGA. The proton-ligand and metal-ligand constants[M=Ni(II), Zn(II)] of these compounds were determined in 70%(v/v) DMF-water medium at 0.1M KNO3 ionic strength and 303K temperature by using Irving-Rossetti titration method and the stability constant (Log β) values were found to follow Irving William series of stability of complexes.........
Keywords: Potentiometric titrations, spectrofluorophotometry, thermal analysis, UV absorption spectroscopy, viscosity measurements.

[1]. Abhishek Kumar Jain, Simant sharma, Ankur vaidya, Veerasamy Ravichandran and Ram Kishore Agarwal. Chem Biol Drug Des. 2013;81:557-576.
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[3]. Yurii SLYUKA., Chem.met.Alloys., 2014,7; 37-41.
[4]. Shadab miyan siddiqui, Attarsalahuddin,AmirAzam., Med. chem. Res. 2013; 22: 1305- 1312.
[5]. Yang Hu., Chem. Rev. 2014 ;114 (10): 5572-5610.

Abstract: This study assessed the antimicrobial activity of four synthesized organotin (IV) derivatives of potassium hydrogen hexanedioate, L: Bu2SnL2 (1), Bu3SnL (2), Ph2SnL2 (3) and Ph3SnL (4). The compounds were tested for antimicrobial activity against four strains of Gram-positive bacteria: Staphylococcus aureus, Streptococcus pyogenes, Bacillus cereus, Corynebacterium ulcerans, four strains of Gram- negative Bacteria: Escherichia coli, Klebsiella pneumoniae, Proteus mirabilis and Pseudomonas aeruginosa and four fungi strains of :Histoplasma capsulatum, Mucor mucedor, Penicillium helicium and Penicillium chrysogenum.........
Keywords: Organotin(IV) derivatives, potassium hydrogen hexanedioate, Antimicrobial Activity

[1]. A. Bacchi, A. Bonardi, M. Carcelli et al., "Organotin complexes with pyrrole-2,5-dicarboxaldehydebis(acylhydrazones).Synthesis, structure, antimicrobial activity and genotoxicity," Journal of Inorganic Biochemistry, vol. 69 (1 2), 1998, pp.101-112.
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[3]. P. Chaudhary, M. Swami, D. K. Sharma, and R. V. Singh, "Ecofriendly synthesis, antimicrobial and antlspermatogenk activity oftriorganotin (IV) complexes with 4-nitrobenzanilide semlcarbazone and 4-nitrobezanilide Thiosemicarba zone," Applied Organometallic Chemistry, 23( 4), 2009, pp. 140–149.
[4]. M. Nath and S. Goyal, "Spectral studies and bactericidal, fungicidal, insecticidal and parasitological activities of organotin(IV) complexes of Thio Schiff bases having no donor atoms," Metal-Based Drugs, vol. 2, pp. 297–309, 1995.
[5]. N. Awang, J. Baba, N. S. A. Mohdyusuf, N. F. Kamalodin, Synthesis and Characterisation of Organotin (IV) N-benzyl-Nisopropyldithiocarbamate Compounds: Cytotoxic Assay on Human Hepatocarcinoma cells (HepG2), American Journal of Applied Sciences. 7(8), 2010, 1047-1052.

Abstract: May women used contraceptive in family planning there for, our objective in this stud y was to evaluate AMH in Egyptian women which use contraceptives. this study was conducted in 30 women use the oral contraceptive, divided into 15 women use Implanon and 15 use Depoprovera (18-3 5years) together with 15 age matched normal control women. Blood tests were collected in a fasting state, lipid profile, AMH were assessed........
Keywords: lipid profile, AMH, Egyptian women.

[1]. Ahmed, I. T., Hussein, A. H., & Talib, A. (2015). Lipid Profile Changes in Women in Reproductive Age Group Using Injectable Medroxypogesterone Acetate Contraception.
[2]. Andersen, A. N., Witjes, H., Gordon, K., & Mannaerts, B. (2011). Predictive factors of ovarian response and clinical outcome after IVF/ICSI following a rFSH/GnRH antagonist protocol with or without oral contraceptive pre-treatment. Hum Reprod, 26(12), 3413- 3423. doi: 10.1093/humrep/der318
[3]. Arbo, E., Vetori, D. V., Jimenez, M. F., Freitas, F. M., Lemos, N., & Cunha-Filho, J. S. (2007). Serum anti-mullerian hormone levels and follicular cohort characteristics after pituitary suppression in the late luteal phase with oral contraceptive pills. Hum Reprod, 22(12), 3192-3196. doi: 10.1093/humrep/dem258
[4]. Bentzen, J., Forman, J. L., Pinborg, A., Lidegaard, Ø., Larsen, E., Friis-Hansen, L., . . . Andersen, A. N. (2012). Ovarian reserve parameters: a comparison between users and non-users of hormonal contraception. Reproductive biomedicine online, 25(6), 612- 619.
[5]. Bonnema, R. A., McNamara, M. C., & Spencer, A. L. (2010). Contraception choices in women with underlying medical conditions.
Am Fam Physician, 82(6), 621-628.

Abstract: This study presents the synthesis and characterization of 2-Methyl-N-prop-2-ynylbenzamide and Nprop- 2-ynylbenzamide by Schotten-Baumann method. These compounds were synthesized by treating propargylamine with acyl chloride in the presence of potassium carbonate as the sacrificial base, a yield of 61% and 48% respectively were obtained. The products were characterized with 1-H and 13-CNMR, IR and mass spectral.........
Keywords: acyl chloride, carboxamides, N-prop-2-ynylbenzamide, propargylamine, 2-Methyl-N-prop-2- ynylbenzamide.

[1] Madeleine M. Joullié and Kenneth M. Lassen, (2010), « Evolution of amide bond formation », ARKIVOC, 2010 (viii): 189-250.
[2] Eric Valeur and Mark Bradley, (2009), « Amide bond formation: beyond the myth of coupling reagents», Chemical Society
Reviews, 38(2): 606-631.
[3] Vijaya R. Pattabiraman and Jeffrey W. Bode, (2011), « Rethinking amide bond synthesis», Nature, 480(7378): 471-479.
[4] SCHMEING TM AND RAMAKRISHNAN V., (2009), « WHAT RECENT RIBOSOME STRUCTURES HAVE REVEALED ABOUT THE
MECHANISM OF TRANSLATION», NATURE, 461(7268): 1234-1242.
[5] IRENE COIN, MICHAEL BEYERMANN AND MICHAEL BIENERT, (2007), « SOLID-PHASE PEPTIDE SYNTHESIS: FROM STANDARD
PROCEDURES TO THE SYNTHESIS OF DIFFICULT SEQUENCES», NATURE PROTOCOLS, 2(12): 3247-3256.

Abstract: In this study, synthesis of novel β-Lactam derivative comprising of β-Lactam moiety 7-ACT i.e. (6R,7R)-7-amino-3-((6-hydroxy-2-methyl-5-oxo-2,5-dihydro-1,2,4-triazin-3-ylthio)methyl)-8-oxo-5-thia-1-azabicyclo[ 4,2,0]oct-2-ene-2-carboxylic acid and NEPA-NCA i.e. [(S)-ethyl 2-((S)-4-methyl-2,5-dioxooxazolidin- 3-yl)-4-phenylbutanoat] is disclosed. The synthesis of intended compound has been characterized and confirmed by 1H-NMR, 13C-NMR and Mass..........
Keywords: β-Lactam, NEPA-NCA, 7-ACT

[1]. Montavon, Marc; Reiner, Roland; Thiazolylacelamidecephalosporins; US 4327210

[2]. Shrivastava, Sarita; Ranjan, Amulya; Tripathi, Niraj Kumar; "Synthesis of novel β-Lactam derivative and it's application." IOSR Journal of Applied Chemistry (IOSR-JAC) Volume 7, Issue 7 Ver. I. (July. 2014), PP 16-20.

[3]. Mehta, Goverdhan; Singh, Vishwakarma in Chemical Society Reviews (2002), 31(6), 324-334

[4]. Singh, Girij Pal; Wani, Mukesh Jagannath; Lande, Hemraj Mahadeorao; Jain, Adinath Murlidhar; WO 2006085332 A1

[5]. Wang, Lixin; Li, Xianguo; Cai, Zegui; Wang, Wen; Tian, Fang; CN 101024630 A

Abstract: In this work, Calculation of the formation constant of uranium (VI) complexes with leucine and isuleusine has been determined in the PH renges 1 to 3.5 and ionic strength in 0.1 mol/dm3 sodium pherchlorate at 25+0.1 ℃ and wave lenghth of 250 to 285 nm (distance of 5 nm each) by potentiometry and spectrophotometric methods.The average values of logarithms of the stability constants for complexes of 𝑈𝑂2+2 with Leucine for models of MHL and (HL)2is equal to 2.76 and 5.12, respectively and for complexes of 𝑈𝑂2+2 with isoleucine, for models of MHL and M(HL)2is equal to 2.26 and 4.62 respectively.
Keywords: Uranium (VI), leucine, isoleucine, spectrophotometry

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Abstract: An examination of the experimental data obtained from polymerisation of styrene of in THF using alternating current through a series of plots showed that relationships of rate of Polymerisation and limiting viscosity of polystyrene with frequency of current are of Freundlich and Langmuir Adsorption Isotherm types at higher and lower frequencies respectively. The experimental data are closely reproducible from these empirical relationships. The total Chain Length of polystyrene at different frequencies have been calculated and are found to decrease with the increase in frequency of current.
Keywords: Polymerisation, Styrene, Alternating Current, Chain Length, Frequency

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Abstract: PMDI (polymeric methyl diphenyl diisocyanate) resin cannot be used for plywood manufacturing through conventional method due to its high reactivity towards active hydroxyl containing compounds. The PMDI adhesives are mixed with starch to control the reactivity and to make its easy application for plywood. The urethane formation between starch and PMDI was confirmed using FTIR. The adhesive was used to make plywood. But the bond strength was not satisfactory. The bond strength was improved by the addition of tannin and hexamine solution............
Keywords: PMDI, Plywood, Adhesives, Starch, Tannin

[1]. Charles E. Frazier. (2003). Isocyanate wood binders, 681-694pp. In Handbook of adhesive technology (second edition, revised and expanded), Pizzi A. and Mittal K.L. (eds). Marcel Dekker, Inc.
[2]. Papadopoulos, A.N. (2006), Property comparisons and bonding efficiency of UF and PMDI bonded particle boards as affected by key process variables. BioResources 1(2), 201-208 pp.
[3]. Papadopoulos, A.N. (2002). Isocyanate resins for particle board: PMDI vs EMDI. European journal of wood and wood products 60(2) 81-83 pp.
[4]. Hanns-Immo sachs and Donald Larimer (1997). Polyisocyanate binders for products based upon wood, agricultural wastes and PUR scraps, 4p. In Utech asia 97, David Reed and Sarah Ward (eds). Rapra Technology Ltd.
[5]. Long Yu, Eustathios Petinakis, Katherine Dean, and Hongshen Liu (2011), Poly(lactic acid) Starch blends, 222p: In Poly(lactic acid): Synthesis, structures, properties, processing and applications, Rafael A. Auras, Loong-Tak Lim, Susan E.M.Selke, Hideto Tsuji (eds). JohnWiley & Sons publication.

Abstract: The polycrystalline CdSe thin films were deposited on amorphous glass substrate by the thermal evaporation technique under the pressure of 10-5 torr. The structural, surface morphological and optical properties of deposited films were studied by using X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and UV-VIS Spectroscopy respectively............
Keywords: CDSE thin Films, XRD, SEM, UV-VIS

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Abstract: The Biochemical Oxygen Demand (BOD) of groundwater in Enugu Northern Senatorial District of South-east Nigeria have been found to indicate a general high degree of pollution. The Chemical Oxygen Demand (COD) of the water was also assessed and temperature measured. The parameters were determined using standard methods by the Association of Official Analytical Chemists (AOAC) and the American Public Health Association, American Water Works Association; World Environmental Federation (APHA-AWWA-WEF). 12 boreholes were randomly sampled due to depth and spatial distribution and the parameters determined in triplicates on weekly bases for a period of six months.............
Keywords: BOD, COD, groundwater pollution, Enugu north senatorial district.

[1]. UNICEF, Fact sheet: water, sanitation and hygiene. WBCSD water facts and trends: Technical and policy document, UNICEF, WHO, UNESCO, WFP, and World Bank 2010, [Online]. Available from: http://www.unicef.org/index_documents.html (accessed April 2014).
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Abstract: Activated carbons from raphia hookeri fruit epicarps obtained by chemical activation using ZnCl2 (CAZn), H3PO4 (CAH) and KOH (CAK) were utilized for the removal of lead (II) ion from aqueous solution. Samples were characterized by FTIR, Boehm method, pHpzc, iodine number, bulk density and surface area. Batch adsorption experiments were performed to study the effects of contact time, solution pH, adsorbent mass and initial adsorbate concentration at 27 oC. Optimal conditions from equilibrium studies were as follows:............
Keywords: Activated carbon, Adsorption, Chemical activation, Lead (II) ions, Raphia hookeri.

[1] U. Farooq, J. A. Farooq, M. A. Khan and M. Khan. Biosorption of heavy metal ions using wheat based biosorbents – a review of the recent literature, Bioresource and Technology, 101, 2010, 5043–5053.
[2] M. Fomina and G. M. Gadd, Biosorption: current perspectives on concept, definition and application, Bioresource Technology. 160, 2014, 3–14.
[3] A. Gundogdu, , D. Ozdes, C. Duran, V. N. Bulut, M. Soylak, H. B. Senturk, Biosorption of Pb(II) ions from aqueous solution by pine bark (Pinus brutia Ten.), Chemical Engineering Journal, 153, 2009, 62–69.
[4] F. J. Cerino-Cordova, P. E. Díaz-Flore, R. B. García-Reyes, E. Soto-Regalado, R. Gómez-González, and M. T. E. Bustamante-Alcántara Biosorption of Cu(II) and Pb(II) from aqueous solutions by chemically modified spent coffee grains. International Journal of Environmental Science and Technology. 10, 2013, 611–622.
[5] P. Sivakumar, and P. N. Palanisamy Adsorption studies of basic Red 29 by a non-conventional activated carbon prepared from Euphorbia ssantiquorum L. International Journal of Chemical Technology and Research, 03, 2009, 502-510.

Abstract: Levels of Cd, Cu, Ni, V, Pb in Bonny light crude oil was investigated using atomic absorption spectrophotometer. The result revealed mean concentration of Cu (0.0485 ± 0.002 ppm), Ni (0.0375 ± 0.002), V (0.006 ± 0.001 ppm) and Pb (0.093 ± 0.003 ppm). Cd was not detected in the analysis. In a comparison to other crude, the level of these metals was not significantly high. The metal concentration increase on the order: Pb > Cu > Ni > V. level of Pb and Cu were higher than Ni and V possibly as a result of anthropogenic activities. The mean Ni/V ratio was high (6.3) which suggest that the crude oil came from terrestrial derived source rock.............
Keywords: Heavy metals, Crude Oil, Ni/V ratio, Bonny, Nigeria

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Abstract: Consumption of sugar –sweetened beverages (SSBs), particularly carbonated soft drinks may be a key contributor to the epidemic of diabetes by virtue of these beverages 'high' added sugar content, low safety and incomplete compensation for total energy. The sugar content in some selected soft drinks was analyzed using hand-held refractometer. The results revealed that the content of sucrose per bottle in Amstel malt, Malta Guinness, Grand malt, Fayrouz, Teem, Bitter lemon, Beta malt, Maltina and Maltex were:............
Keywords: Sugar, Sweetener, Soft Drink, Malt, Refractometer, Abakaliki,

[1]. Flegal K.M., Carroll M.D. and Kit B.K. and Ogden C.L. (2012) Prevalence of obesity and trends in the distribution of body mass index among US adults, 1999-2010, JAMA, 307 (5): 491-497
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Abstract: One big disadvantage of pure Zirconis is polymorphism, during heating process it undergoes phase transformation and this makes the usage of pure Zirconia (ZrO2) in many applications very difficult. This phase transformation leads researchers to focus on the modification of ZrO2. The addition of some oxides e.g. CaO, Y2O5 etc into Zirconia (ZrO2) results into modification that do not undergo phase transformation during heating, hence can be used in many applications. Y2O3 was used in this research as a stabiliser to prepare the modifications known i.e. monoclinic, cubic and tetragonal and it was doped with a rare earth trivalent metal.............
Keywords: Cerium, Doping, Luminescence, Phase transformation, Stabilized Zirconia.

[1] Xu.gang; Zhang. Ya-wen; Liao. Chun- Sheng: Yan. Chun - Hua. Teragonal to monoclinic phase transitions in nanocrystalline rare earth stabilized zirconia prepared by a mild hydrothermal method. Journal of ceramic society (2004), 87 (12), 2275 - 2281.
[2] Edgar Williams. Structure and photo stimulated luminescent properties of Eu-doped M2BaX4(M= Cs, Rb:, X = Br, Cl). Journal of applied physics 2004, 96(11).
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[5] Yang. Chih - Liang; Hsing-1 and Chen. Chih – Cheng Characteristic of yttria stabilized tetragonal zirconia powder used in optical fiber connector ferrule. Ceramics International (2005), 31(2), 297 - 303.

Abstract: This paper proposes a new method for the quantitative analysis of date seed coffee in a binary mixture with Arabica coffee by applying Attenuated Total Reflectance-Fourier Transform Mid Infrared Spectroscopy (ATR-FTMIR) associated with chemometric tools. Blends of Arabica coffee with different percentages of Date seed coffee were measured using ATR-FTIR spectroscopy. Spectral and reference data were firstly analyzed by principal component analysis (PCA). Partial least square regression (PLSR) was used to establish calibration model...........
Keywords: Arabica coffee, chemometrics, date sees coffee, infrared spectroscopie, quantification.

[1]. Belitz, H. D., Grosch, W., & Schieberle, P. Food chemistry. Berlin-Heidelberg: Springer-Verlag, 2009.
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Abstract: In this study, an intensive review of lanthanides as activators is done. The literature was reviewes for works on lanthanides as activator. The general properties of the lanthanides are described here, followed by criteria for which an element or ion can be judged upon as a good activator, for which the lanthanides fulfilled these criteria. To understand how the lanthanides function as activators in luminescence, an indebt study of the theory of luminescence was done in this review. Green luminescence of Ca(SCN)2۰2H2O:Eu2+ and that of Sr(SCN)2:Eu2+ were used in this review to demonstrate the properties of the lanthanides as activators. The conclusion this review has reached is that the lanthanides using EU as an example are good activators in luminescence.

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