Journal of Chemistry, Environmental Sciences and its Applications
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Molecular Interaction Studies of Aqueous Acetonitrile Solutions Using Ultrasonic Technique
Get PDFDensity (ρ), viscosity (η) and ultrasonic velocity (u) of aqueous acetonitrile solutions were measured as functions of concentration at 308.15K. The measured data of ρ, η and u have been used to calculate various acoustical and thermodynamic parameters viz. adiabatic compressibility (β ad ), intermolecular free length (L f ), acoustic impedance (Z), relaxation time (τ), rao’s constant (R M ), wada’s constant (W), free volume (V f ), absorption coefficient (α/f 2 ), gibb’s free energy (∆G), relative association (R a ) and available volume (V a ). These parameters help out in elucidating the molecular association in the mixture. The variation of these parameters with concentration of solute indicates the nature of interaction present in the binary mixtur
Study and Evaluation of Groundwater Quality of Malwa Region, Punjab (North India)
Get PDFWater is the most v aluable, basic human need, prime natural resource and a precious asset. Water is indeed required in all aspect of life and health for domestic purposes, drinking, cooking, bathing, washing clothes, utensils, producing food, agricultural activity, energy generation, maintenance of environment and development for life. Water plays important role in several metabolic, physiological and other activities in human body as well as in other living beings ( m ittal and Arora, 2014)
Exogenous Sulphur Dioxide Induced Changes in Superoxide Dismutase, Peroxidation and Non- Protein SH Content in Mung Bean (Vigna Radiata) Seedlings
Get PDFThis study investigated the effect of exogenous sulphur dioxide gas for different durations the superoxide dismutase, peroxidase, lipid peroxidation and non-protein SH content in mung bean (Vigna radiata) seedlings. It has been found that the activity of superoxide dismutase is enhanced at low concentration but decreased when the seedlings are exposed to higher concentration of SO 2 ; the peroxidase activity and lipid peroxidation decreased and the non-protein SH content increased significantly. The results indicate that superoxide dismutase, peroxidase, lipid peroxidation and non-protein SI-I content metabolisms are associated with the growth of the organism and are susceptible to alterations by exogenous sulphur dioxide stress
Soil Property Variations Under Different Land Use/ Cover Types In Traditional Agricultural Landscape In Northeast India
Get PDFClearing of forests and their subsequent conv ersion into croplands greatly influence soils in terms of its water holding capacity, structure stability and compactness, nutrient supply and storage as well as its biological life. Consequently, many agricultural soils in the tropics are now below their potential levels. In this paper we are reporting that there is expansion of agricultural land use in Northeast India at the expense of forest area in order to meet increasing human population and market demands. New land use/ cover types are also being introduced for commercial and well as subsistence purpose. On the other hand fallow period of shifting agriculture has been reduced. We suggest that a minimum fallow period of seven years is necessary sufficiency of soil nutrients and vegetation in this humid subtropical mountain landscape of Northeast India
Antibacterial Activity of Terminalia Chebula Fruit by Agar well Diffusion Method
Get PDFAntibacterial activity of ethanolic, acetonic and chloroform extract of the fruit of Terminalia Chebula were studied against Escherichia Coli and Staphylococcus aureus by agar well diffusion method. Results obtained showed that the growth of both coli and S. anreus were inhibited by all the three extracts of dried fruit of Terminalia Chebula . The antibacterial activity against selected strains depends on the type of solvent used for extraction and the bacterial stain tested. The results revealed that Terminalia Chebula can be exploited for new potent antibacterial agents
Carbon Footprint of Public Transportation – A Case Study of Religious Tourism to Shri Mata Vaishano Devi Shrine in Katra, Jammu and Kashmir, India.
Get PDFThe rates of increment in G h Gs concentrations in the atmosphere are extraordinarily high, far exceeding their natural sequestration rates. Transportation accounts to 19% of the global energy use and 23% of all the C o 2 emissions globally, a bout 75% of these emissions come from cars and trucks. i n i ndia, transportation sector consumes about 17% of total energy and produces 60% of G h G emissions, estimated at around 261 Tg of C o 2 , of which 94.5% is contributed by road transport. Travel and tourism, one of the largest industries in the world is a significant contributor to greenhouse gas emissions. Religious tourism in particular, is an important cultural and traditional heritage of i ndia. This paper is a case study to estimate the individual carbon footprints of pilgrims travelling s hri m ata Vaishano Devi s hrine in k atra, Jammu and k ashmir. The analysis considers individual emissions from different modes of transportation viz. train, bus, taxi/auto-rickshaw and air travel using equivalent carbon emission factors
Treatment of Dental Caries by Ozone Therapy – A Review
Get PDFOzone, a powerful oxidizer effectively kills bacteria, fungi, viruses and parasites at a dramatically lower concentration and also has the capacity to stimulate blood circulation, platelets, and immune response. Ozone being biocompatible is used in all aspects of dentistry in gaseous, ozonated water and as ozonated oils. Ozone therapy is a well-established alternative and complementary therapy in most of the European countries. Treatment may be achieved by increasing the resistance of the tooth against the microbial activity and reducing the extent of microbial activity. In addition to the recent materials and techniques, the therapeutic actions of ozone may provide beneficial results by reducing the demineralization of the tooth. The treatment is completely painless and increases the patient’s acceptability and compliance with minimal adverse effects. In the present paper, a systematic review was performed on studies investigating the effects of ozone on oral tissues and microorganisms and unveil the uses of ozone in dentistry in all aspects
One-Pot Synthesis of Schiff Base Compounds Derived From 2-Nitro Benzoic Acid With Aldehydes
Get PDFIn the present study, an intermolecular reductive Schiff base formation from nitroarenes and benzaldehydes to yield diarylimines is carried out in the presence of iron powder and dilute acid This type of excellent method avoids the use of hazardous solvents, longer reaction time and tedious work up procedure. Advantage of this efficient method is excellent yield of products in crystalline form, short reaction time, simplicity of work up procedure and no use of any type of hazardous solvents. Simply this reaction is an economically attractive method for synthesis of Schiff base compounds. All these Schiff base compounds were characterized by means of IR, 1H-NMR analysis data. The Schiff base ligands have also been tested in vitro for their antibacterial and antifungal activity. The experimental results suggest that Schiff base ligands are more potent in antibacterial and antifungal activities
H2 - Y2 Reactions (Y = Cl, Br, I): A Comparative and Mechanistic Aspect
Get PDFThe reaction between hydrogen and chlorine shows resemblance to that between hydrogen and bromine but is considerably more complicated, owing to the larger number of elementary processes that play a significant part in it. The reaction scheme proposed for the hydrogen-chlorine reaction differs in several important respects from that for the hydrogen-bromine reaction. The main differences are seen to be (1) the inclusion of the reaction H + HBr → H2 + Br and the exclusion of H + HCl → H2 + Cl, and (2) the different chain-terminating steps, Br + Br → Br2 being assumed for bromine and the three processes H + O2, Cl + O2, and Cl + X in the chlorine reaction. The rather marked difference between the reactions of chlorine, bromine, and iodine with hydrogen is that the hydrogen-iodine reaction is elementary while the others are not
Synthesis, Characterization and Biological Evaluation of Some Novel Chalcone Derivatives Containing Imidazo[1,2-a]Pyridine Moiety
Get PDFChalcone was prepared by the condensation of arylmethyl ketone and arylaldehyde in the presence of alcoholic alkali. Present study describes the synthesis of a series of (2z)-3-[2-(4-chlorophenyl)-8-methyl imidazo[1,2-a] pyridine-3-yl]-1-substituted arylprop-2-en-1-one compounds (h) 1-9. The compounds were characterized by modern analytical techniques such as CHN analyses, IR, 1H NMR spectra and further supported by mass spectroscopy. All the title compounds were screened for their in vitro antibacterial and antifungal activity against B.coccus, S.aureus, Pseudomona, E.coli, A.niger, Ampicillin, Amoxicillin, Ciprofloxacin, Norfloxacin, Greseofulvin. Their minimum inhibitory concentrations (MIC) were determined. The results of antibacterial activity showed that compounds h 4, h 9 and antifungal activity compounds h 1, h 9 using standard drug