Volume-10 ~ Issue-11 ~ November-2017

Abstract: Stabilization is a method appropriated to the physic and chemical constraints to improve the mechanical property of a material. To stabilize means to modify the initial properties of a system soil-water-air, the soil has other interesting and compatible properties to a modification to get compatible permanent structures for an application. It is about the mechanical, physical and chemical stabilization. Three ways possible exist to consolidate the soil. These three processes can be applied, alone or in general, coupled. Several works of research on the stabilization of the laterite have been done. They already gave satisfactory results on the improvement of the mechanical strength with the chemical stabilizers as the cement and the lime.........

Keywords: Laterite, biotechnology, microbial reduction of iron, granulometric improvement.

[1]. MESSI A., 1984 « Valorisation de la latérite du Gabon comme matériau de construction économique », Mémoire DEA INS de Lyon.
[2]. ANDRIAMIHAJA R. B. 1988 « Etude chimique des latérites des Hauts plateaux de Madagascar ». Thèse de Doctorat 3ème cycle en Chimie minérale. Faculté des Sciences, Université d'Antananarivo.
[3]. SOUBIES François. 1973 « Contribution à l'étude de la pédogenèse ferralitique. Morphologie, minéralogie et évolution géochimique des formations superficielles de la cuvette d'Ambalavao (Madagascar) ». Thèse de Doctorat. Université Paul Sabatier de Toulouse.
[4]. F-BOURGEAT, O-AUBERE. 1970 « Les sols ferralitiques à Madagascar ». C.R. Semaine Géol., Tananarive.
[5]. SEGALEN P., 1994 « Les sols ferralitiques et leur répétition géographique ». Editions de l'ORSTOM, Collection Etudes et Thèses. Tome 1, 2, 3, Paris.

Abstract: Chromium (Cr) toxicity depends on the oxidation state of the metal, which subsequently determines its uptake, translocation and accumulation. It severely affects mineral uptake and metabolic processes in plants even at low concentration. The aim of this research work is to investigate the effects of oxalic acid on Cr3+ion toxicity on sorrel seedlings (Hibiscus sabdariffa L) transplanted in hydroponic solution. The growth of 8week old seedlings exposed to 0, 5, 10, 20 and 40mg/L Cr3+ ion and 20mM oxalic acid was monitored in a green house under controlled conditions. The results revealed that Increasing concentrations of chromium (III) ion caused deleterious reduction in growth: dry.........

Keywords: Hydroponic, Chelation, Sorrel, greenhouse, oxalic acid, chromium.

[1] Becquer T., Quantin C., Sicot M., Boudot J P., 2003. Chromium availability in ultramafic soils from New Caledonia. Sci. Total Environ. 301: 251 –261.
[2] Chatterjee J., Chatterjee C., 2000. Phytotoxicity of cobalt, chromium and copper in cauliflower. Environ. Pollut., 109: 69 – 74.
[3] Chen Y.X., Zhu Z.X., He Z. Y., 1994. Pollution behaviour of organic Cr ( III) complexes in soil–plant system. Chin J Appl. Ecol. 5: 187 –191.
[4] Davies F.T., Puryear J.D., Newton R.J., Egilla J.N., Grossi J.A.S., 2001. Mycorrhizal fungi enhance accumulation and tolerance of chromium in sunflower (Helianthus annuus). J. Plant Physiol. 158: 777 –786.
[5] Ding Y.Z., Song Z.G., Feng R.W., Guo J.K., 2014. Interaction of organic acids and pH on multi-heavy metal extraction from alkaline and acid mine soils. Int. J. Environ. Sci. Technol. 11: 33 – 42.

Abstract: N-(1-hydroxy propyl) carbazole was synthesized by treating carbazole with trimethylene chlorohydrin in presence of solid sodium hydroxide in the solvent medium of acetone. N-(propyl acetate) carbazole was synthesized by reacting N-(1-hydroxy propyl) carbazole with acetic anhydride and pyridine in water bath. N-(propyl acetate)-3- formylcarbazole was synthesized by treating N-(propyl acetate) carbazole with Pocl3 and DMF. 2-[N-(propylacetate) carbazolyl] benzothiazole was synthesized by treating N-(propyl acetate)-3- formylcarbazolewith 2- amino thiophenol in presence of Baker's yeast in the solvent medium of DCM at room temperature for 30h . 2-[N-(1-hydroxy propyl).........

[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 investigated the compressive strength performance of partially replaced Ordinary Portland cement with ground granulated blast furnace slag (GGBFS). The replacement was done at 5%, 10%, and 15 % GGBFS. A blank OPC was used as a control. Mortar prisms were prepared and cured with accordance to KS EAS 18:1-2001. The resultant compressive strength was determined at 2nd, 7th, 14th and 28th daysof curing.Chemical composition of GGBFS and the setting times of the resultant cement was also determined. Results obtained showed that the compressive strength increased significantly at 10% and 15% GGBFS replacement at 28 days of curing. GGBFS can thus be used as a suitable additive in partial replacement of OPC.

Keywords: GGBFS, OPC, Mortar Prism, Compressive Strength.

[1]. Kenya Bureau of Standards. Composition, Specification and Conformity of CommonCements. KS EAS 18-1, Nairobi: Kenya, 2001.
[2]. Kenya Bureau of Standards. Standard Test Method for Determination of Cement Strength, KSEAS 148-1, Nairobi: Kenya, 2000.
[3]. Kenya Bureau of Standards. Standard Test Method for Determination of Cement Setting Timeand Soundness, KS EAS 148-3, Nairobi: Kenya, 2000.
[4]. Ground granulated blast furnace slag for use in concrete, mortar and grout. Definitions,Specifications and conformity criteria, BS EN 15167-1:2006.
[5]. Kumar, S., Rao, B.K; and Mishra, S. Chloride Penetration Resistance of ConcreteContaining Blast Furnace Slag. The Indian Concrete Journal, December, 2002 pp. 745-751.

Abstract: The model Zinc II dinuclear complex was highly active in catalyzing the aerobic oxidation of 3,5-di-tert-butylcatechol (3,5-DTBC) to 3,5-di-tert-butylbenzoquinone (3,5-DTBQ) in mixed aqueous solution at pH 8.5, the activity measured in terms of kcat is 4.58 min-1 with very high catalytic efficiency (kcat/KM) 3.3 x 106. Saturation kinetic studies show that the order of conversion of substrate to product quinone has been confirmed by UV–vis spectrophotometric study.

Keywords: Heptadentate ligand, dinuclear complex, crystal structure, DFT study, catecholase activity

[1]. R. Than, A. A. Feldmann and B. Krebs, Structural and functional studies on ... and catechol oxidases, Coord. Chem. Rev. 182, 1999, 211-215.
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[4]. A. Guha, T. Chattopadhyay, N. D. Paul, M. Mukherjee, S. Goswami, T. K. Mondal, E. Zangrando and D. Das, Radical pathway in catecholase activity with zinc-based model complexes of compartmental ligands, Inorg Chem., 51, 2012, 8750–8759.
[5]. (a) M. E. Bodini, G. Copia, R. Robinson and D. T. Sawyer, Designed metalloprotein stabilizes a semiquinone radical, Inorg Chem., 22, 1983, 126–129; (b) A. Hens, A. Maity and K. K. Rajak, N, N coordinating schiff base ligand acting as a fluorescence sensor for zinc (II) and colorimetric sensor for copper (II), and zinc (II) in mixed aqueous media Inorg. Chimica Acta., 423, 2014, 408-420..

Abstract: The concentrations of eight selected heavy metals, Pb, Cd, Cu, Ni, Cr, As, Hg, and Zn in seven consumable vegetables harvested at some dump sites and farm lands ( as control) in Port Harcourt and its environs in Rivers State Nigeria were investigated. The soils in which they are grown were also analysed using Solaar Thermo Elemental Atomic Absorption Spectrometer (AAS) model SE 71906. The vegetables plants investigated were Bitter leaf (Vernonia Amgdylina, Pumpkin (Telfairia Occidentalis), Green Vegetable (Amaranthus hybridus), Okro plant (Abelmoschus esculentus L), Green Amaranths (Amaranthus viridis). The results obtained show that the concentration of heavy metals in the dumpsites were significantly higher (P<0.05) and varies from the results......

Keywords: Heavy metals, Dump sites, Edible vegetables, Bioaccumulation, AAS, food chain.

[1]. Agbenin J.O and Olojo L. A (2004). Competitive adsorption of Cu and Zn by a Bt horizon of a savanna Alfisol as affected by pH and selective removal by hydrous oxides and organic matter; Geoderma 119: 85-95.
[2]. Adriano. DC (1984). Trace metals in the Terrestrial Environment. New York: VerlagSpiegler.
[3]. Alloway, et al, (1997). Chemical Principles for environmental pollution Blackie Academic Professional Vol2, 1353 – 1357.
[4]. Audu A., Lawal A. O, (2006). Variation in metal contents of plants in vegetables garden sites in Kano metropolis .J. Appl. Sci. Environ. Manag. 10(2): 105 – 109.
[5]. Bandmann O. Weiss K.H and Kaler S.G (2015). Wilson's disease and other neurological copper disorders, The Lancet Neurology, 14 (1): 103-113..

Abstract: Selenium has been found to show protective properties against different toxic effects. Petrol station workers are exposed to many harmful effects. Therefore, we aimed to determine the selenium level in hair and serum specimens of the oil station workers. A total of 100 petrol station workers and 100 office workers were included in the study. Selenium concentration in hair and serum samples of this people was determined using an ICP-OES instrument.Se amount (0.456 ± 0.348) in hair samples of petrol station workers were higher than that of the petrol station staff (0.340 ± 0.191), however this difference was insignificant (p=0.278) Serum selenium concentration in petrol station workers (22.30± 3.37) was significantly lower than that of the control group (24.680 ± 3.08) (p = 0.031), which may be due to inclusion of selenium in detoxification owing to exposure to various chemicals by the workers. Thus, selenium supplementation can be recommended in their diet.

Keywords: Selenium, ICP-OES, Heavy Metal, Hair, Serum, Petrol Station Workers.

[1]. Kucharzewski, M., Braziewicz, J., Majewska, U.Góźdź, S., (2003). Copper, zinc, and selenium in whole blood and thyroid tissue of people with various thyroid diseases. Biological Trace Element Research, 93(1-3), 9-18.
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[3]. Speight, J. G., (2014). The chemistry and technology of petroleum: CRC press.
[4]. Chaves, E. S., Lepri, F. G., Silva, J. S., de Quadros, D. P., Saint'Pierre, T. D.Curtius, A. J., (2008). Determination of Co, Cu, Fe, Mn, Ni and V in diesel and biodiesel samples by ETV-ICP-MS. Journal of Environmental Monitoring, 10(10), 1211-1216.
[5]. Santos, D. S., Korn, M. G. A., Guida, M. A., Santos, G. L. d., Lemos, V. A.Teixeira, L. S., (2011). Determination of copper, iron, lead and zinc in gasoline by sequential multi-element flame atomic absorption spectrometry after solid phase extraction. Journal of the Brazilian Chemical Society, 22(3), 552-557.

Abstract: Some Pd(II) and Th(with 1-para and 1-ortho substituted tetrazoline -5-thione at PH <7have used as antifungal agents. Antifungal activities are evaluated against Aspergillus niger (An)and Fusarium heterosporium (Fh) with Pd and Th complexes .

Keywords: Pd(II), Th(IV) ,1-ortho,1-para,1-substituted tetrazoline-5-thione,antifungal activity,PT5TH(phenyltetrazoline-5-thione), MIC(maximum inhibition concentration).

[1]. Thesis: Santosh Kumar;Ph.D. Thesis(2009) , study of some complexes of Pd with 1-phenyl tetrazoline-5-thione ligands at different PH and their biological activity ,doctoral diss. patna university,patna, India
Journal papers:
[2]. Manoj Ranjan,Santosh Kumar and Abhay Kumar,study of ortho and pera substituted complexes of Pd (II),J.Chemtrack 11 (2),2009,491-492
[3]. W.G.Hanna and M.M.Manwad,study of some transition metals ,transition metal chem.-2001,26,644
[4]. Abhay Kumar, Manoj Ranjan, and Santosh Kumar,biological activity of some complexes of Pd(II), Nepier advance research journal of science vol-3,dec-2009,87.

Abstract: The research entitled Effect of Traditional Drying toward Total Volatile Base-Nitrogen (TVB-N) and Peroxide Value (PV) on Nike of Payangkah fish (Ophiocara aporos) have been done. The research objective is to analyze TVB and NPV content of dry and fresh Nike of Payangkah fish (Ophiocara aporos) The drying method was done traditionally under sun rays for 8 hours, TVB-N analysis using distillation method and peroxide value as described by Pearson (1981). The results shows that fresh and dry nike of fish payangkah (Ophiocara aporos) each have PV and TVB-N content under value figure recommended.

Keywords: Nike of Payangkah fish (Ophiocara aporos); fresh; dry; peroxide value, TVB-N

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Abstract: It is a demand in the modern era of chemical sciences to develop and design new and useful compounds for the service of mankind without the use of methods which are traditional one. Workers were trying to develop and synthesize series of new compounds since past in the laboratories using traditional synthetic methods and they used to check their properties thereafter. This process is time consuming and this lead to synthesis of a large number of compounds. Some recent trends have emerged and developed in the field of designing of compounds which may include microwave synthesis, computer aided designing etc.. This helps in studies and designing of compounds with required properties. This can be done with the help of software which are developed on the basis of quantum chemical theoretical methods. Results so obtained from these software packages may be checked and validated using some or other statistical method. This presentation includes studies of significance of statistical methods especially of correlation and regression methods in QSAR and 3D- QSAR studies.

[1]. Semi-empirical AM1 and PM3 calculations for electronic structure of Schiff base ligand derived from IN,N‟-bis-(2‟cyanoethy1) amino benzaldehyde", Kishor Arora, A.R. Khan and K.P. Sharma, ORIENTAL J. CHEM., 18(2), 319, (2002).
[2]. "Semi-empirical AM1 investigations of geometric and electronic effects in benzyne mechanism" Kishor Arora and D. Kumar, JOURNAL INDIAN CHEMICAL SOCIETY, 79, 693 (2002).
[3]. Semi-empirical quantum chemical AM1 and PM3 calculations for electronic structure of some simple carbonyl compounds ligands", Kishor Arora and Sonal Agnihotri, JOURNAL SAUDI CHEM. SOC., 7, 221 (2003).
[4]. Theoretical Semi-Empirical AM1 studies of Schiff bases",Kishor Arora and Kiran Burman, JOURNAL SAUDI CHEM. SOC., 9(2), 297, (2005).
[5]. Theoretical AM1 and PM3 Quantum Chemical Calculation for some schiff bases", Kishor Arora and Sonal Agnihotri, ORIENTAL J. CHEM., 22(2), 315 (2006).