R. Thilagavathi, A. Prithiba and R. Rajalakshmi, IJGHC, December 2017 – February 2018; Sec. A; Vol.7, No.1, 095-113.DOI: 10.24214/IJGHC/GC/7/1/09513.
Ulva reticulata seaweed extract was tried as a corrosion inhibitor for mild steel in acid medium using electrochemical impedance, potentiodynamic polarisation and mass loss studies. At optimum concentration, the extract showed appreciable inhibition efficiency. This system obeyed Langmuir adsorption isotherm and this confirmed the adsorption of the inhibitor on mild steel. The mixed type of the inhibitor was reflected by Potentiodynamic polarization study. The results of electrochemical impedance studies inferred that on increasing concentration of the inhibitor, the charge transfer resistance of the mild steel increased and double layer capacitance decreased. The inhibitive nature of Ulva reticulata seaweed was reaffirmed by surface analytical study.
G. Praveen chand, M. Gowrisankar, C. Rambabu,IJGHC, December 2017 – February 2018; Sec. A; Vol.7, No.1, 062-094.,DOI: 10.24214/IJGHC/GC/7/1/06294.
Density (ρ), viscosity (η), and speed of sound (u) have been measured for the binary mixtures of 2-chloroaniline with acetophenone, cyclopentanone and cyclohexanone over the entire composition range at 303.15, 308.15, 313.15 and 318.15 K. By using this data, the excess molar volumes, excess isentropic compressibility, and deviation in viscosity for the binary systems at the above mentioned temperatures were calculated and fitted to Redlich - Kister polynomial equation to determine the fitting parameters and the root-mean-square deviations. The excess molar volumes, excess isentropic compressibility, deviation in viscosity and excess Gibbs energy of activation of viscous flow have been analyzed in terms of charge-transfer complexes, new H-bonds, and dipole-dipole interaction between unlike molecules. The results obtained for viscosities of binary mixtures were used to test the semi-empirical relations of Grunberg-Nissan, Katti-Chaudhri, and Hind equations.
Tejaswini Reddy, Beena Sharma and Amit Dubey,IJGHC, December 2017 – February 2018; Sec. A; Vol.7, No.1, 054-061,DOI: 10.24214/IJGHC/GC/7/1/05461.
In the present study to assess the roadside soil contamination with Zn, Pb, & Cr, soil samples were collected along a 5km stretch on the Sarona Highway and New Raipur Highway in District Raipur Chhattisgarh. The samples were analyzed for selected heavy metals by using Atomic Absorption Spectrometer (AAS). The mean concentrations of Zn, Pb, & Cr of Sarona Highway were 212.83, 75.50, & 8.16 mg/kg for soil samples indicates the pollution of soil with chromium had low risk and had considerable high risk from Zinc. Similarly average concentrations of Zn, Pb, & Cr of New Raipur Highway were 299.46, 71.00 & 8.13 mg/kg for soil samples indicates the pollution of soil with chromium had low risk and had considerable high risk from Zinc. The observed concentration of heavy metals decreases with increase in distance from road edge on both the study sites. It can be concluded that soil of Sarona Highway having high traffic density is more polluted with heavy metals than that of New Raipur Highway, comparatively with low traffic density
Nidhi Agarwal, Pramod K. Raghav and Anshu Sharma,IJGHC, December 2017 – February 2018; Sec. A; Vol.7, No.1, 047-053.DOI: 10.24214/IJGHC/GC/7/1/04753
Glucosinolates are the secondary metabolites found primarily in the plants of Cruciferae family which contain nitrogen and sulphur as their constituents. They are responsible for the defence mechanism in these plants against biotic and abiotic stresses and they also serve as repellents against various pests. Based on their functional group of amino acids precursor methionine, phenylalanine and tryptophan, they are classified into three major groups such as aliphatic, indole and aromatic glucosinolates respectively. Glucosinolates are hydrolyzed by myrosinases to yield various degradation products like isothiocyanates and nitriles. The glucosinolates and its derivatives have a wide range of biological functions such as antinutritional effects of seed meal in animals, fungal disease suppression, insects pest repellent and anticarcinogenic properties in humans. However, it also acts as goitrogenic, if it is consumed more than it is recommended, either by interfering with the functioning of thyroid gland or by competing with the uptake of iodine by thyroid gland.
Milind M. Patil, Shankarsing S. Rajput, IJGHC, December 2017 – February 2018; Sec. A; Vol.7, No.1, 035-046,DOI: 10.24214/IJGHC/GC/7/1/03546.
A method for adopting a solid-phase strategy for the synthesis of N-substituted succinimides and glutarimides is described here; using the silica-bound benzoyl chloride mediated solid phase synthesis. We have optimized and used a simple silica bound benzyl chloride as a dehydrating agent in cyclisation reaction with N-aryl immic acids by cyclodehydration. The main advantage of this method is the silica-grafted reagent was simply recovered after the reaction and reused several times made this method as the environmental benign chemical method of synthesis of N-aryl cyclic imides.">