Volume-13 ~ Issue-10 ~ October 2020

Abstract: 4-nitro benzene diazonium chloride was prepared by the treatment of 4-nitro aniline in presence of sodium nitrite and aqueous hydrochloric acid at 00c. Then diazonium salt was coupled with 4,6-diamino pyrimidine in presence of 4(M) hydrochloric acid stirred for 2h at 00c. Then 0.001 (M) sodium hydroxide solution was added to naintian the pH=6.Polyimide of 5-(4-nitrophenylazo)-4,6-diaminopyrimidine was synthesized by chemical imidization process. At first 5-(4-nitro phenylazo)- 4, 6- diamino pyrimidine was treated with 6FDA dissolved in NMP stirring at 400c for 24h yielding viscous polyamic acid. To this solution acetic anhydride and Pyridine was added and stirred at 900c for 24h. The polyimide was characterized by IR, UV and NMR spectroscopy.

Key words: 4,6-diamino pyrimidine, 5-(4-nitro phenylazo)-4, 6-diamino pyrimidine, polyamicacid, Polyimide

[1]. Kippelen B, Tamura K, Peyhambarian N, Padias AB, Hall Jr. HK. Phys. Rev B 1993, 48 (15): 10710.
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Abstract: This study examined, the quality of water using the wagtech palintest kit, in some selected communities of Darazo Local government area of Bauchi state, Nigeria. Water samples (groundwater) were collected from eight (8) randomly selected locations (communities) across four different wards. Wagtech Palintest Photometer, Atomic Absorption Spectrophotometer, pH meter, Conductivity meter, Turbidimeter, Wagtech Incubators were used to analyze the samples. The results revealed that the mean concentration (mg/L) of the physicochemical parameters were within the Nigerian standard for drinking water quality maximum permissible limits (NSDWQ MPL) except for two locations (Angwan Gabarr....

Keywords: Wagtech Palintest Kit, Physicochemical parameters, Eschericia coli

[1]. APHA (1995). Standard methods for analysis of water and wastewater. American Public Health Association 19th edition Inc., Washington D C.
[2]. Bernard, E. and Ayeni, N. (2012). Physicochemical analysis of groundwater samples of Bichi local government area of Kano State, Nigeria. ARPN Journal of Science and Technology. 3 (2): 325-332.
[3]. Chindo, I. Y., Elisha, K., Ishaku, Z. and Ephraim, D. A. (2013). Physicochemical analysis of ground water of selected areas of Dass and Ganjuwa local government areas, Bauchi State, Nigeria. World journal of analytical chemistry, 1 (4): 73-79. Doi: 10.1261/wjac-1-4-6.
[4]. Daramola, S. O (2013). Groundwater quality assessment of some boreholes from Odo-Oro Ekiti, South Western Nigeria. Journal of Environmental Science, Toxicology and Food Technology.7(2):58-62
[5]. Ezekwe, C. I., Igbagara, P. W. and Odubo, T.V. (2016). Public Health Implications and Threats to Domestic Water Quality in Owerri Metropolis in Imo State Nigeria. International Journal of Environmental Technology Research. (2):1-2

Abstract: An efficient procedure for the synthesis of Nickel Sulphide (NiS) Nanoparticles from Nickel Chloride and Sodium Sulphideby nanocrystalline Nickel Sulphide (NiS) can be used as catalystand a variety of elegant techniques have been done to control growth of shape and size of NiS Crystals. The worldwide availability, larger scale synthesis, higher yields and shorter reaction times are the advantages of the present method.

Keywords: Metal Sulphides, NiS nanoparticles, XRD, UV-Spectra, IR- Spectra

[1]. L. Spanhel, M. Haase, H. Weller, A. Henglein, J. Am. Chem.Soc., 1987, 109, 5649.
[2]. C.L. Czekaj, M.S. Rau, G.L. Geoffroy, T.A. Guiton, C.G. Pantano, Inorg.chem., 1988, 27, 3269.
[3]. J. Xu, W.J. Ji, Mater.Sci.Lett., 1999, 18, 115.
[4]. I. Honma, S. Hirakawa, K. Yamada, J.M. Bae, Solid State Ionics, 1999, 118, 29.
[5]. V.I. Klimor, A.A. Mikhailovsky, S. Xu, A. Malko, J.A. Hollingsworth, C.A. Leatherdale, H.J. Einsler, M.G. Bawendi, Science, 2000, 290, 314..

Abstract: An experiment was conducted to study the safety evaluation of certain insecticides on C. montrouzieri at Insectary, S. V. Agricultural college, Tirupati. C. montrouzieri is an important coccinellid predator of psuedococcidae. In recent times, it is well known that the natural enemies are getting affected by the usage of harmful pesticides in huge amount which is a major concern. Hence, we have taken up the study of safety evaluation of certain new insecticides on CryptolaemusmontrouzieriCultures of C. montrouzieri was maintained on Maconellicoccushirsutus.Spray fluid of respective insecticides at desired concentration was sprayed on mealybugs using micro applicator.....

Key Word: C. montrouzieri, Food contamination method, Dimethoate, Flonicamid, Buprofezin, Neem oil

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[2]. Chacko, M.J., Bhat, P.K., Ananda Rao, L.V., Deepak Singh, M.B., Ramanarayan, E.P and Sreedharan, K. The use of the lady bird beetle, Cryptolaemusmontrouzierifor the control of coffee mealybugs. Journal of Coffee Research. 1978. 8: 14-19.
[3]. Mani, M., Jhansilakshmi, V and Krishnamoorthy, A. Side effects of some pesticides on the adult longevity, progeny production and prey consumption of Cryptolaemusmontrouzieri(Coccinellidae: Coleoptera). Indian Journal of Plant Protection. 1997. 25 (1): 48-55.
[4]. Rao, T.V., Gahani, M.A., Sankaran, T and Mathur, K.C. A review of biological control of insects and other pests in South East Asia and Pacific Region. Commonwealth Institute of Biology and Technology Communication.1971.6: 142 pp.
[5]. Babu, T.R and Azam, K.M. Biological control of grape mealybug, Maconellicoccushirsutus(Green). Indian Journal of Plant Protection. 1989.17:123-126.

Abstract: The present study describes the kinetics study of Malonic ester with N-chlorosaccharin reagent in acetic acid water medium through kinetic study. The result confirms that the activity of N-chlorosaccharin is limited and it is due to the restricted activity on ketones/esters in ordinary medium of solvent. Further it concluded that the presence of acid does increase the activity at relatively higher temperature.Therefore, this study worth contribution in the field of chemical kinetics by opening a new field with NCSA. Background: Chemical kinetics describes the time evolution of a well-stirred chemically reacting system in a way that takes into account the fact that molecules come in whole numbers and exhibit some degree of randomness in their.......

Key Words: Malonic ester, N-chlorosaccharin reagent, Acetic acid

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Abstract: Optimization studies of anaerobic waste matter digestion using integrated Bioreactor system was carried out using curve fitting software programs such as MATLAB7.9 and EXCELL2007. The substrate material was municipal organic waste. The integrated bioreactor system comprised a standard up flow anaerobic sludge bed (UASB) (Module I), vessel bioreactor (Module II). The simultaneous batch process showed that chemical CSTR to 97% for the UASB. Observed cumulative methane yields at three OLRS for the tree reactor system shown from further analysis and observation that the vessel bioreactorhad the highest efficiency of 17.941 (CH4/STP)kg-1 of substrate material the optimization......

[1]. Courtney, B.B. (2003). Worldwide Fossil Fuel Chemistry Department of Louisiana State University.
[2]. Dow and Downing (2006). The Atlas of Climate Change: Mapping the world's greatest challenges. Lost Angeles: University of California Press.
[3]. Erguder, T.H., Tezel, U.,Guven, E. andDemirer, G.N. (2001). Anaerobic biotransformation and methane generation potential of chees whey in batch UASB reactor. Waste Manag. 21;643-650
[4]. Najafpour, G.O. Zinatizadeh A.A.,L. Mohammed, A;Rlsa, M.H. and NastrollahZadeh, H. (2007). High anaerobic digestion palm oil mill effluent in an up flow anaerobic sludge-fixed film bioreactor, process Biochemistry 44 pp 370-379.
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Abstract: 4-arylidene-phenyl/methyl oxazolone have been synthesized from reactions of various aromatic aldehydes such as benzaldehyde (3a), 4-chlorobenzaldehyde (3b), 4-hydroxybenzaldehyde (3c) and 4-methoxybenzaldehyde (3d) with hippuric acid and acetyl glycine in the presence of anhydrous sodium acetate with acetic anhydride as a basic medium.Treatment of produced oxazolones with 5,5 methylene bis (pyridine-2-amine) which was prepared during this work by reacting 2-amino pyridine with formaldehyde to give ethyl acet /benz amide acrylate (I-VIII).In addition,All the synthesized compounds were identified on the basis of m.p, TLC, IR, 1H NMR, D2O Exchange, 13C NMR, APT spectroscopy.

Key words:hippuric acid, acetyl glycine, oxazolone, bis(pyridine-2-amine), acrylate

[1]. Abdel-Aty, A. S. 2009. Pesticidal effects of some imidazolidine and oxazolone derivatives. World Journal of Agricultural Sciences 5(1): 105-113.
[2]. Bala, S., Saini, M., & Kamboj, S. 2011. Methods for synthesis of Oxazolones: A Review. International Journal of ChemTech Research. 3(3): 1102-1118.
[3]. Betlakowska, B., Banecki, B., Czaplewski, C., lankiewicz, L. & Wiczk, W. 2002. Reaction of 4‐benzylidene‐2‐methyl‐5‐oxazolone with amines, Part 2: Influence of substituents in para‐position in the phenyl ring and a substituent on amine nitrogen atom on the reaction kinetics. International Journal of Chemical Kinetics. 34(3): 148-155.
[4]. El-Mekabaty, A. 2013. Erlenmeyer azlactones: synthesis, reactions and biological activity. International Journal of Modern Organic Chemistry. 2(1): 40-66.
[5]. El-Mekabaty, A., Habib, O. M. O., Hassan, H. M., & Moawad, E. B. 2012. Synthesis and evaluation of some new oxazolones and imidazolones as antioxidant additives for Egyptian lubricating oils. Petroleum Science. 9 (3): 389-399.

Abstract: Novel Pt(100)Pd, Pt(100)Au and Pt(100)PdAu nanoalloys were synthesised and tested for ammonia oxidation, which is a structure sensitive reaction that occurs almost exclusively on Pt(100) sites. High resolution
transmission electron microscopy (HRTEM) analysis showed well distributed non-agglomerated 5-20 nm semispherical and cubic nanoalloys with lattice fridges on their surfaces indicating the crystalline nature of the
nanoalloys. The existence of the preferentially cubic shaped nanoalloys in the samples revealed that the nanoalloys had a significant amount of (100) sites at their surfaces. The cyclic voltammetry (CV) of the Pt(100)
nanoparticles in the hydrogen adsorption/desorption region (-200 mV to 100 mV vs. Ag/AgCl) showed the presence of adsorption states......

Keywords: Nanoalloy, Nanoparticles, Catalyst, Ammonia oxidation, Adatoms

[1]. Rosca, V., Koper, M.T.M. Electrocatalytic oxidation of ammonia on Pt(111) and Pt(100) surfaces. Phys. Chem. Chem. Phys. 2006, 8, 2513-2524.
[2]. Zhong, C., Hu, W.B., Cheng, Y.F. On the essential role of current density in electrocatalytic activity of the electrodeposited platinum for oxidation of ammonia. J. Power Sources 2011, 196, 8064-8072.
[3]. Vidal-Iglesias, F.J., Solla-Gullón, J., Montiel, V., Feliu, J.M., Aldaz, A. Screening of electrocatalysts for direct ammonia fuel cell: Ammonia oxidation on PtMe (Me: Ir, Rh, Pd, Ru) and preferentially oriented Pt(100) nanoparticles. J. Power Sources 2007, 171, 448-456.
[4]. Lomocso, T.L., Baranova, E.A. Electrochemical oxidation of ammonia on carbon-supported bi-metallic PtM (M = Ir, Pd, SnOx) nanoparticles. Electrochim. Acta 2011, 56, 8551-8558..

Abstract: A Coherent procedure for the Concoction of Nickel Sulphide – Silicon Dioxide (NiS - SiO2) Nanoparticles from Nickel Chloride, Sodium Sulphide and Silicon Dioxideby nanocrystalline Nickel Sulphide – Silicon Dioxide (NiS - SiO2) can be used as catalystand a variety of inventive methods have been done to control growth of shape and size of NiS-SiO2 Crystals. The worldwide usage, larger scale synthesis, higher yields and shorter reaction times are the advantages of the present method.

Keywords: Metal Sulphides, NiS – SiO2 nanoparticles, XRD, UV, IR- Spectra

[1]. L. Spanhel, M. Haase, H. Weller, A. Henglein, J. Am. Chem.Soc., 1987, 109, 5649.
[2]. C.L. Czekaj, M.S. Rau, G.L. Geoffroy, T.A. Guiton, C.G. Pantano, Inorg.chem., 1988, 27, 3269.
[3]. J. Xu, W.J. Ji, Mater.Sci.Lett., 1999, 18, 115.
[4]. I. Honma, S. Hirakawa, K. Yamada, J.M. Bae, Solid State Ionics, 1999, 118, 29.
[5]. V.I. Klimor, A.A. Mikhailovsky, S. Xu, A. Malko, J.A. Hollingsworth, C.A. Leatherdale, H.J. Einsler, M.G. Bawendi, Science, 2000, 290, 314.

Abstract: In the present CuII and ZnII complexes of Schiff bases derived form ((E)-4-p-hydroxyphenyl-5-((4-phenylthiazol-2-yl)diazenyl)thiazol-2-amine)and p-aminobenzaldehyde were synthesized, characterized and tested for the bioactivity against Gram positive and Gram negative group of organisms. The synthesized complexes were characterized by elemental and spectroscopic methods, UV-Vis, magnetic susceptibility and assayed for biological activities. The complexes showed (1:2)metal: ligand stoichiometry (ML2) and an octahedral geometry. The complexes showed an increased in the antibacterial and antifungal activity compared to their parent ligand

Keywords: Substituted thiazole, Schiff bases, metal complexes, antimicrobial screening

[1]. Chen P, Horton LB, Mikulski RL, Deng L, Sundriyal S, Palzkill T, et al. 2-Substituted 4,5-dihydrothiazole-4-carboxylic acids are novel inhibitors of metallo-β-lactamases. Bioorg Med Chem Lett, 2012;22:6229–32.
[2]. Venkatraman R, Hossain MA, Fronczek FR. 4-Phenyl-1-[1-(1,3- thiazol-2-yl) ethylidene]thiosemicarbazidato}{4-phenyl-1-[1-(1,3-thiazol-2-yl)ethylidene]-thiosemicarbazide} nickel(II) chloride monohydrate. Acta Cryst, 2010;66:541–2.
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Abstract: This work aimed to evaluate the effect of a new soil conditioning developed from the Mangonia Pubences biomass on cation exchange capacity and nutrient leaching in two different soils.It was evaluated the chemical composition of the produced soil conditioner, the physicochemical properties of cation exchange capacity and water holding capacity, as well as directly application tests were performed in two soils - sandy and clayey texture. The results indicated that the oxidative chemical treatment allows to obtain a material mainly composed by holocellulose, as evidenced by the soil conditioner produced presents water retention capacity of 35 g.g-1 and 471 mmolc.kg-1 of capacity cation exchange. Tests with application of 0.5%, 1.0% and 1.5% conditioner produced inthe two selected soils showed that this application increase the CEC andwater holding capacityof the soils.The leaching tests carried out in columns showed that the soil conditioner developed reduced the leaching of calcium, potassium, sulfur, zinc and boron nutrients, showing that their use results in an increase in nutrient retention capacity. The results showed that the material produced is a potential product for the soil conditioner market.

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