Volume 27, Number 2

Synthesis and Characterization of Some Halogen Containing Triazolotriazinoindoles as Possible Fungicides

Solid Phase Extraction of Ultra Traces Copper (II) Using Octadecyl Silica Membrane Disks Modified by a New Schiff Base Prior to Determination by Flame Atomic Absorption

Introduction Copper are widespread anthropogenic pollutant of environment and the determination of this metal ion is an actual problem. The determination of copper is usually carried out by flame1-3 and graphite4-5 atomic absorption spectrometry...

Debromination of Aurone Dibromide with Sodium Hydrogen Sulphide

Introduction Debromination of Vicinal-dihaloakanes and dibromoketones have been studied by earlier workers using the debrominating agents like potassium iodide in acetone1, stannous chloride in different solvent2, sodium hydrogen selenide3, thiourea in ethanol4,5 and also...

An Experimental Study of The Ionicity of Hgclbr

Introduction It has been experimentally established that in a solid-solid capillary reaction between two reactants, at least one of which is fairly ionic having a small inorganic impurity mixed with these, the amount of...

A New 2,8-Dihydroxy-1,6-Dimethoxy Xenthones from Cythula Tomesntosa

Introduction Cyathula tomentosa (Kurru) belongs to  family Amaranthaceae, is a perennial under shrub occurs throughout Garhwal Himalayas up to 600-2000 meter altitude. Cyathula tomentosa have been used in snake bite and has emetic properties...

Oxidative Cyclisation of 2′-Hydroxychalcones using Sodium Tellurite: Synthesis of Flavones

Introduction Flavones constitute a large sub group of naturally occurring flavonids and are widely distributed plant pigments1­. Flavones occur in nature in Free State with varieties of substitution pattern. In recent years, much attention...

Effect Of 2-(2′-Hydroxy-3′-Methoxy Phenyl)-4-Bromo-6- Methyl Benzothiazolyl Hydrazones Metal Complexes on Fermentation Reaction

Measurement of Critical Micelle Concentration of Technical Grade Non-Ionic Detergent In Presence of Chloramine-T using Dye Solubilization Technique

Introduction The critical micelle concentration of technical grade non-ionic surfactants has been determined in the past by three different methods1, viz., from the break in the turbidity Vs. concentration curve, from the break in...

Study of Binary and Ternary Metal Complex Formation by Peptides by Solution Electrophoresis in Solution [Cu (Ii)/Ni (Ii)/Co (Ii)/Zn (Ii) – Glycyl Sarcosine -Nta-System]

Introduction For the study of Metal-Ligand equilibria partition technique, solvent extraction, ion exchange method, and paper electropheresis have been mainly employed by a number of workers. Jokl [1] has done a significant work for...

Sensitized Photo-Oxidation of P-Aminobenzoic Acid by Fenton Reagent

Introduction Fenton and photo-Fenton processes are based on the generation of hydroxyl radicals that is considered as advanced oxidation processes (AOPs). Hydroxyl radicals are extraordinarily reactive and unstable species that attack most of the...

Improvement in the Quality of Bromophenol Blue Containing Polluted Water after Photocatalytic Treatment

Introduction Dyes are extensively used in the textile industry. They are the copious source of coloured organics emanating as a waste from the textile dyeing process.  Dye and dye intermediates with high degree of...

Synthesis and Characterization of Some New 2,5-Diaryl-1,2,4-Triazolo-(3,2-b)1,3,4-Thiadiazole-6-Thiones as Potential Pesticide (Fungicides)

Synthesis, Characterisation and Spectral Studies of Metal Complexes of Glimepiride, An Oral Antidiabetic Drug

Introduction Glibenclamide (Euglucon), 1-(4-(2-(chloro-2-methoxybenzamido)ethyl)-benzenesulphonyl)-3-cyclo hexyl. Urea, or 1-((p-(-2-(5-chloro-O-anisamido) ethyl)phenyl)-sulphonyl-3-cyclo hexyl Urea, a sulphonyl urea derivative having melting point 169-174°C is a white or almost white crystalline orderless powder, practically without taste, insoluble in water...

Electrochemical Studies of Tl(I) Complexes with Adipic Acid and Nicotinic Acid in Aqueous Media

Studies on the Correlation of the Mineralogy of Jharia Coal Field (Dhanbad) (Lodna and Bhowrah Coal) with their Geological Formation

Synthesis, Characterization and Antimicrobial Properties of Titanium(III) complexes with Schiff Bases Derived From -Amino Acids

Introduction Schiff bases are important class of ligands and have got-wide applications in various fields 1,2. The metal complexes derived from schiff bases have been found to have potential application in industry and biology3....

Limnological Studies of Upper Lake of Bhopal (India)

Estimation of Etoricoxib in Tablet Dosage form by RP- HPLC using Internal Standard with Emphasize on Specificity Parameter Method

Influence of Myo-inositol on Thermodynamics of Clouding Behavior of Non-ionic Surfactant Tween-40

Introduction The physico-chemical studies of additive surfactant solution have been created much interest regarding their pharmaceutical and industrial importance1-2. Non-ionic surfactant belonging to polyethylene oxide family, typically abbreviated as CiEj is widely used as...

Physicochemical Analysis of Bore-Wells Drinking Water in Morbi-Malia Territor

Introduction In continuation of earlier studies on bore-well water1-3, here we have investigated intensively the Physico-Chemical analysis of drinking water of Morbi-Malia territory, located in Rajkot district of Gujarat state. Bore-well water is generally...

Adsorption Removal of Pollutants (Triphenylmethane and Xanthene Dyes) from Water by Charfines and Activated Carbon

Transition Metal complexes of 3-[3-(4-chloro-phenyl) -4-hydroxy-6-methyl-Pyran-2-one -:- synthesis, Spectral, Thermal and Fungicidal Study

Synthesis and Characterization of Biologically Active Transition Metal Complexes containing Monobasic Tridentate Schiff Bases

Studies on Cu(Ii), Co(Ii), Ni(Ii) and Mn(Iii) Complexes of Merrifield Resin Supported Ligand and Antimicrobial Activities of This Novel Schiff Base Chelates

Introduction Among the different polymer supported metal complexes, Schiff base polymer metal complexes 1,2 are important. Apart from their  novel structural features, unusual magnetic properties and role in  biological processes, the polymer supported Schiff...

Reduction of Nitrate during release of Stored Energy from Gamma Irradiated Crystalline Potassium Fluoride in Aqueous Nitrate Solution

Introduction Crystalline Potassium fluoride on exposure to ionizing radiation produce   F centres and hole centres. Dissolution of such crystals in water results in the   formation of hydrated electrons. F centre crystal    →e–aq Recombination   of...

Synthesis and Physico-Chemical Characterisation of New Mannich Bases and Their Paramagnetic Metal Complexes

Introduction It is well known from the literature that the compounds containing amide moiety haνe a strong ability to form metal complexes and exhibit a wide range of biological actiνities1-4. The coordination chemistry of...

Novel Method for Synthesis of Sulphaguanidine

Ultrasonic and Viscometric Studies of Some Amino Acids in the Aqueous Solution of Alcohols

Introduction  Amino acids are the organic compounds containing both amino and carboxylic group in their molecular solutions. Amino acid in aqueous solution are ionized and can act as acids or bases due to formation...

A Semi-Empirical Approach for the Cohesive Energy of the Alkali Halides

Introduction The cohesive energy of ionic compounds has been studied by many authors over the last several decades [e.g.1].  These incorporate various possible effects. As a result of the comprehensive nature of the treatments,...

Synthesis,Characterisation and Structural Studies on Metal Complexes Derived from Benzofuran Thiosemicarbazide Ligands and their Antimicrobial Activities

Visible Spectrophotometric Methods for Quantitative Determination of Doxofylline using Iodine and α, α’-Bipyridyl as Reagents

Introduction Doxofylline (DFL)1-5, chemically known as 7-(1, 3-dioxolan-2-ylmethyl)-1, 3-dimethylpurine-2, 6-dione (Figure 1), is a novel bronchodilator xanthine derivative drug used in the treatment of bronchial asthma, chronic obstructive pulmonary disease (COPD) and chronic bronchitis....

Ft-Ir and Computational Study of Sulphaguanidine

Introduction Sulfonamides form a significant class of compounds in medicinal and pharmaceutical chemistry with several biological applications1-4. There has been growing interest in using organic materials for nonlinear optical (NLO) devices, functioning as second...

Synthesis and Characterisation of Glimeperide Complexes of Copper, Magnesium, Nickel and Cadmium

Study of Physical Chemistry on Biosorption of Nickel by Using Chlorella Pyrenoidosa

Introduction Discharge of heavy metals from metal processing industries is known to have adverse effects on the environment. Biosorption of heavy metals by metabolically inactive biomass of microbial organisms is an innovative and alternative...

Column Method: an Analytical Approach for the Removal of Chromium by Using iron Oxide Nanoparticles

Introduction Chromium (Cr) is a transition element located in the group VI-B of the periodic table with a ground-state electronic configuration of Ar 3d54s1. The stable forms of Cr are the trivalent Cr (III)...

Preparation and Characterization of Elephant Dung Activated Carbon and its Application for Rhodamine B Adsorption

Introduction Textile and dyeing industry effluent can create serious environmental pollution problems when they are discharged into water bodies. The untreated effluents possess toxic dyes and pigments which impart colour even at low concentration....

Macronutrient and Micronutrients Status in Relation to Soil Characteristics in South- East Coast Plain-riverine Soils of India

Introduction Soil fertility is one of the important factors controlling yields of the crops. Soil characterization in relation to evaluation of fertility status of the soils of an area or region is an important...

Adsorption Isotherms 2-aminophenol and 4-aminophenol on Carbon Nonotube

Introduction Nanotubes are forms of carbonic compounds with complicated structures that which have longitual strings instead of global structure [1].carbon nanotubes (CNTs) invented at 1991[2].CNTs is much important than fulerns because of it has...

Evaluation of Rate Coefficients and Diffusion Coefficients of Evaporated n-Heptane using RF-GC Methodologies

Introduction Evaporation of n-hexane is a vital ecological fate for compounds introduced into human, freshwater and marine environments by accidental spills, industrial effluents, or introduced directly into the air from industrial unit processes such...

Study on Infrared Spectra of Poly Aniline Synthesized by Chemical Oxidation Method

Introduction Infrared spectral analysis is an important and powerful tool of chemical identification of organic substances. The major advantages of infrared spectroscopic method over other methods of structural analysis are: (i) it gives useful...

Study of the Freundlich, Langmuir and Temkin Adsorption Isotherms for Some Amino Acids and Their Complexation With Lanthanum(III) on Multi-Wall Carbon Nanotube (MWCNT)

Synthesis and Charactersation of Biodegradable Polyesteramide Based on Poly (ε-Caprolactone) and Study of Degradation

Optimized Graft Copolymerization of Gelatin-G-Poly (Acrylamide-Co-2-Acrylamido-2-Methyl Propan Sulfonic Acid

Fabrication and Comparison of Electro-Spun Poly Hydroxy Butyrate Valrate Nanofiber and Normal film and its Cellular Study

Synthesis of Novel Symmetric Schiff Bases Using KSF

Introduction Schiff bases represent a class of important compounds in medicinal and pharmaceutical field. They have biological activities such as antibacterial (1), anticancer (2), antifungal (3), and herbicidal activities (4). Schiff bases have a...

Radiation-Induced Graft Copolymerization of Acrylonitrile Onto Kappa-Carrageenan

Introduction Graft copolymerization is an attractive means for modifying base polymers because grafting frequently results in the superposition of properties relating to the backbone and pendant chains. Considerable interest has been focused on chemical...

Concentrations of Lead, Copper and Zinc in the Bottom Sediments of Tuba Island Waters of Langkawi, Malaysia

The Chemical Functionalization of Carboxylated Multi-Wall Nanotubes With 2-Aminophenole Via Microwave Irradiation

Introduction Carbon nanotubes (CNTs), which were discovered by Iijima (1) in 1991, have been attracted chemists and scientists interest to their unique mechanical, thermal, and electrical properties (2-3). Since carbon nanotubes are insoluble and...

Synthesis of Graft Biocopolymer Based on Pectin and Investigation of Chemorheology Properties

Introduction The modification of  natural polymers is a promising method for the preparation of new materials. Graft copolymerization of vinyl monomers onto natural polymers is an efficient approach to achieve these materials. Superabsorbing resins...

Prediction of SO2 Transport Across Ceramic Membranes using Finite Element Method (FEM)

Introduction Nowadays, capture of greenhouse gases is a subject of great interest in research community. Greenhouse gases have adverse effects on human life and health. Among adverse gases, sulfur dioxide (SO2) has been known...

Early Stages of Cobalt-Copper Alloys Electrodeposition Onto Fluorine-Doped Tin Oxide Electrodes in Sulfate Solution

Introduction The electrochemical deposition of metals and alloys on semiconductors substrates has received considerable attention from both fundamental and applied viewpoints [1–3]. This deposition of metallic films on semiconductors is usually performed in a...

Synthesis of a Novel pH- and Salt-Responsive Super Absorbent Hydrogel based on Collagen-g-poly(AA-co-IA)

Synthesis of Alginate-polyacrylonitrile Superabsorbent hydrogel

Preliminary Adsorption study for Heavy Metal Removal with Ion-Exchange Resins in the Teaching Laboratory

Introduction Heavy metals are of primary concern due to its non-degradable nature in the environment unlike organic pollutants. The presence of heavy metal ions will only elevate over time because of its persistence, which...

Evaluation of Dug-Well as a Safe Water Alternative Option in Case of Arsenic Contamination in Groundwater

Swelling and Characterization Behavior of Anti-salt Superabsorbent based on Carboxymethyl Cellulose-g-PAA-co-BuMC Hydrogel

Introduction In recent years, increasing interest in natural-based superabsorbent hydrogel has developed mainly due to high hydrophilicity, biocompatibility, non-toxicity, and biodegradability of biopolymers. These materials are defined as crosslinked macromolecular networks that can absorb...

Chemo-and Regioselective Bromination of Aromatic Compounds in the Presence of γ-picolinium Bromochromate (γ-PBC) /CH3CN

Introduction Brominated aromatic compounds are valuable intermediates in organic synthesis and they have been used widely in industrially important products and biologically active substrates as antitumor, antifungal, antibacterial, antiviral compounds,1,2 and also found in...

Preparation and Characterization of Metronidazole Loaded Carboxymethyl Cellulose-Base Superabsorbent for Drug Delivery Application

Introduction Hydrogels have been of interest to biomaterial scientists for many years because of their hydrophilic character and potential to be biocompatible (1-8). These networks are special soft and pliable polymeric materials that can...

Linear Regression Analysis for Kinetics and Isotherm Studies of Sorption of Manganese (II) Ions Onto Activated Palm ash from Waste Water

Introduction The Aqueous effluents emanating from various natural and industrial sources contain heavy metals dissolved in it. The hazardous impact of heavy metals in waste stream has generated considerable concern in recent years. Primarily,...

Physico-chemical Characteristics and Dissolved Trace Metals in the Pahang River Estuary, Malaysia

Introduction Estuarine areas where freshwater encounters seawater are characterized by a lateral variation in salinity, and can represent a transfer box for the sediments between land and the open ocean (Meade, 1972; Burton, 1988). ...

Fabrication of Collagen-Coated Poly (beta-hydroxy butyrate-co-beta-hydroxyvalerate) Nanofiber by Chemical and Physical Methods

Introduction  Poly (3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) is a biomaterial that is used in a variety of applications including surgical sutures, wound dressing, drug delivery, and tissue engineering. Its versatility is due to its specific properties such...

Synthesis and Antimicrobial Evaluation of 5-(p-substituted phenyl)-N-(3-(5-nitrofur-2-yl) allylidene)-1,3,4-thiadiazol-2-amine Derivatives

Introduction In the past decades, the problem of multidrug resistance microorganisms has reached on alarming level around the world and the synthesis of new anti-infective compounds has become an urgent need for the treatment...

Spectral Investigation of the Activities of Amino Substituted Bases

Introduction Schiff bases derived from aromatic amines and aromatic aldehydes have a wide variety of applications in many fields, e.g., biological, inorganic and analytical chemistry [1-5]. Application of many new analytical devices requires the...