ISSN : 0970 - 020X, ONLINE ISSN : 2231-5039
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Volume 29, Number 4

Volume 29, Number 4

Studies on the Analysis of Lead and Silica in Lead Processing Samples

Introduction Silica, along with lime and iron oxide, is an important fluxing component in the metallurgy of lead by the conventional   blast furnace route 1. The hardness and structure of lead sinter is influenced...

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Characterisation of Kapiri Mposhi Aluminosilicate Minerals

INTRODUCTION Zambia’s amazingly wide spectrum of natural resources spans a range of minerals from gemstones to industrial minerals. The industrial mineral potential of Zambia remains largely unexploited except for copper. As concerns industrial minerals,...

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Highlights of the Meeting on “Horizontal Gene Transfer and the Last Universal Common Ancestor” Held at the Open University, Milton Keynes, UK

INTRODUCTION One of the first of its kind, this meeting, held on the 5th and the 6th September, was designed to investigate and evaluate the importance of ‘horizontal gene transfer’ (HGT) during the period of the...

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Pentafluoropropionic acid as a Efficient Catalyst for the One-Pot Synthesis of 14-aryl-14H-dibenzo[a, j]xanthenes Under Solvent Free Conditions

INTRODUCTION Xanthenes and their derivatives are of considerable interest as they possess a wide range of biological properties, such as anti-inflammatory1, antibacterial2, antiviral3 activities, as well as their use in photodynamic4. Such compounds are...

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Phosphotungstic Acid Supported on Magnetic Nanoparticle Used As Selective and Reusable Photocatalyst for Aerobic Oxidation of Benzylic Alcohols

INTRODUCTION The oxidation of alcohols into their corresponding carbonyl compounds represents a fundamentally important functional group transformation and occupies a prominent position in modern synthetic organic chemistry 1. Many thermal catalytic systems have been...

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Development and Validation of a Stability Indicating Liquid Chromatographic Method for Simultaneous Estimation of Dutasteride and Tamsulosin in Combined Dosage Form

INTRODUCTION Dutasteride (DTS) is chemically (5α,17β)-N-{2,5-bis(trifluoromethyl)phenyl}-3-oxo-4-azaandrost-1-ene-17-carboxamide with an empirical formula C27H30F6N2O2 and molecular weight of 528.5 g/mol. It is a selective inhibitor of both type 1 and type 2 isoforms of 5α-reductase enzyme that...

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Deterioration in Drinking Water Resources and Relative Health Hazards in Bikaner city, Rajasthan, India: A physicochemical analysis

Introduction: The drinking water quality is very significant and vital concern at  present as it  is related  with the present  and  future  health perspective of  the  human race.  Urban population of Bikaner city is ...

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A facile and Convenient Method for Synthesis of Thiiranes under Mild Condition Using Phase Transfer Catalyst

INTRODUCTION Epoxides are among the most useful synthetic intermediates towards the synthesis of many biologically active compounds1 and a large variety of reagents are known for the ring opening of these compounds.2 Their electrophilic...

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Synthesis and Characterization of Divalent Transition Metal Complexes Containing Thiosemicarbazone Ligands

INTRODUCTION Thiosemicarbazones posses considerable biological properties and have medicinal applications such as anti T.B. and leprosy1-2, antiviral properties3, antitumour4, anticancer5,6. Literature survey reveals that the presence of a metal ion increases the activity of...

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Synthesis and Antimicrobial Activity of 2-R 5-oxo 5-H 6 -carbohydrazin 7-phenyl 1,3,4-thiadiazolo-[3,2-a] pyrimidine

INTRODUCTION 1,3,4-thiadiazolo [3,2-a] pyrimidine system efficiently enhances the physiological activity of the molecule 1-3. This replacement occurs in the reactions of 1,3,4– thiadiazolo [3,2-a]pyrimidine derivatives with electrophiles4-5.Literature data on fused heterocycles with athiadiazolo [3,2-a]...

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Synthesis of Indole Annulated Benzazepine Derivative of Medicinal Interest

Introduction Benzazepine moiety occurs frequently in both natural and synthetic drugs and is of highly biological interest. The use of this class of compound is not merely confined to the management of stress related...

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Ultrasound-assisted the three-component synthesis of spiro[4H-pyrano[3,2-c]quinolin-4,3′-indoline]-2′,5(6H)-diones in water

INTRODUCTION Water, after its unique role as solvent in nature, is gaining more and more importance in the recent researches of environmentally benign chemical reactions. It is a cheap and inherently safe solvent relative...

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Synthesis and Characterization of Linear Poly (divinylbenzene-co- ethylvinylbenzene) via a Cationic Solid Catalyst

INTRODUCTION The commonly used commercial divinylbenzene (technical grade) contains meta- and para- isomers of divinylbenzene (DVB) and ethylvinylbenzene (EVB). It is usually composed of 50 to 80 wt % DVB, and, depending on polymerization...

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Microwave-Assisted One-Step Synthesis of 2,5-Disubstituted-1,3,4-Oxadiazoles Using 1,4- Bis(triphenylphosphonium)-2-Butene Peroxodisulfate

INTRODUCTION Since 1960 when Toda et al.,1 first reported the application of solid supports in organic chemistry, the use of this technique has been under investigation.2 Organic oxides such as silica gel, alumina, etc....

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Development of QSAR Model of substituted Benzene Sulphonamide using Multiple Regression Analysis

Introduction: Carbonic Anhydrase-(II) are important enzymes found in red blood cells, gastric mucosa, pancreatic cells and renal tubes. The catalytic action of CA(II)  is fundamental for respiration and transportation of CO2 between metabolizing tissues...

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Synthesis of poly[(pyrrole-2,5-diyl)-co-(4-hydroxylbenzylidene)] catalysed by Maghnite– H+

INTRODUCTION Among conducting electroactive polymers, polypyrrole and its derivatives have received a great deal of attention due to its high electrical conductivity, good environmental stability, relative ease of synthesis and good redox reversibility. These...

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The One Pot Synthesis Salicylaldehyde Prepared by Reactive Grinding with Derivative Phenol and Paraformaldehyde in Absence Magnesium Methoxide

Introduction: The formylation of the hydroxy group is one of the most widely used transformation in organic synthesis. Several synthetic methods for the formylation of primary and secondary Phenol to salicylaldehyde are known. Formylation...

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A Validated Spectral Discriminating Derivative Spectrophotometric Method for Simultaneous Quantification of Atorvastatin calcium and Fenofibrate Combination in Tablets

INTRODUCTION Atorvastatin Calcium (ATV) chemically [R-(R*,R*)]-2-(4-Fluorophenyl)-β,δ-dihydroxy–5-(1–methylethyl)-3–phenyl–4-[(phenylamino)carbonyl]-1H-pyrrole–1–heptanoic acid, is a HMG-Co A reductase inhibitor with hypolipidemic properties 1-4. Fenofibrate (FEN) chemically, Isopropyl 2-[4-(4-chlorobenzoyl)2-phenoxy] methyl propanoate, is a fibric acid derivative with lipid regulating properties exerting...

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One-pot Synthesis of Quinazolinone and Benzamide Derivatives Using SBA-Pr-SO3H as a Nanoporous Heterogeneous Acid Catalyst

INTRODUCTION Quinazolines are an important class of heterocycles with a wide range of pharmacological and biological activities such as anticancer, antiviral, anti-tubercular agents, treatment of diabetes and obesity, anti-inflammatory, insecticidal, anti-microbial1, anticonvulsant, antiulcer, hypolipidemic...

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Synthesis of Green Metallic Nanoparticles (NPs) and Applications

INTRODUCTION The word “nano” is used to indicate one billionth of a meter or 10 -9. Nanoparticles are clusters of atoms and their size from 1–100 nm. “Nano” is a Greek word meaning extremely...

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Determination of Pesticide Residues Level in Phaseoulus Vulgaris Sp.Plant Soil at Cameron Highland

Introduction Pesticides are growth regulators that stimulate or retard the growth of plants. They function as desiccants that speed up the drying of plants, used as an aid in mechanical harvesting of cotton, soybeans...

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Synthesis, Characterisation and Structural Studies of Complexes Containing Different Schiff Bases with Mn (Lll) And Mn (Ii) Transition Metals

INTRODUCTION Schiff bases have been used as chelating ligands in the field of co-ordination chemistry and their metal complexes are of great interest for many years It is well known that N and S...

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Synthesis, Characterization and Spectral Study of Zinc Complex with Gliclazide( N-(hexahydrocyclopenta[c]pyrrol-2(1H)-ylcarbamoyl)-4- methylbenzenesulfonamide) and its Hypoglycemic Activity

Introduction Metal ion is required for many critical functions in humans. Scarcity of some metal ions can leads to disease1. Well – known  example  can  leads  to  pernicious anaemia   resulting from  iron  deficiency;  growth ...

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A Theoretical Survey of Solvation Effects on Tautomerism Stability of Maleic Hydrazide

Introduction Maleic hydrazide  can be easily synthesized by condensation of maleic acid (or anhydride) with hydrazine. Maleic hydrazide (MH) is industrially produced in large quantities and widely used as a plant growth regulator 1–10....

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Combined Influence of Organic Additives on Growth Morphology of Calcium Carbonate

INTRODUCTION The aesthetic control over structures and properties of biominerals produced in nature inspired chemists, biologists and materials scientists since a long time1-3. Mimicking the design and synthesis of biominerals by living organisms is...

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Bioaccumulation of selected metals in fresh water Haruan fish (Channastriatus) collected from Pahang river basin, Malaysia

INTRODUCTION Heavy metals are natural components of the earth’s crust that cannot be degraded or destroyed. They are metallic elements that have a relatively high density, toxic and poisonous. According to many researchers (Blaber,...

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Studies of trace metals in the leaves of Phyllanthus emblica(L)

INTRODUCTION Phyllanthus emblica Linn. (Euphorbiaceae) known as Indian gooseberry is a very richest source of  vitamin C1  found in abundant amount in deciduous forest of Madhya Pradesh. It is common all over tropical and sub-tropical India....

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Corrosion behaviour of the 42CrMo4 Steel Nitrided by Plasma

Introduction Plasma nitriding is a thermochemical process extensively applied in materials science and surface engineering due to its well-known potential for improving properties such as hardness, wear, and corrosion resistance of metallic parts [1]....

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Kinetics of Isothermal Annealing of Gamma-irradiation Damage in Thallous Nitrate

INTRODUCTION The effects produced in solids by bombardment depend on nature of the target and energy of the incident radiation. The important effects are excitation, ionisation, atomic displacement from lattice sites and transmutation of...

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Impact of Reaction Dynamics on Synthesis of Novel Nitrogen containing Aldehydes

Introduction Nitrogen containing compounds are used as structural components of pharmaceuticals and agrochemicals due to their high biological activities [1]. There are many nitrogen containing chemicals, ranging from simple structural compounds as pyridine to...

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Cobalt salophen complex supported on magnetic nanoparticles as an efficient reusable catalyst for oxidation of benzylic alcohols

INTRODUCTION Transition metal Schiff base complexes have attracted much interest in the field of catalysis because of their reversible bonding oxygen ability and high activities in the oxidation reactions 1-7. However, these catalysts are...

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Appraisal of mineral and heavy metal contents in Peach and Grape grown at Some Major Agricultural Companies in Saudi Arabia

Introduction Currently, extensive use of inorganic fertilizers and integrated insect-pest management approach are being adopted for increased fruit production to meet the higher demands for human consumption andto earn more income from the progressive...

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Diazo-Coupling: A Facile Mean for the Spectrophotometric Determination of Rasagiline hemitartrate

INTRODUCTION R(+)-N-propargyl-1-aminoindan (“R-PAI”) is also known as rasagiline and is a chiral compound with one asymmetric carbon atom in a five membered ring with an absolute (R) configuration which is produced as single enantiomer1....

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A study of the fatty acid profile in the muscle of Monopterus chuchia

Introduction It is a well known fact that besides being a beneficial protein source, fishes are a source of polyunsaturated fatty acids (PUFA). Fatty acids are essential nutrients in humans1-5 and other animal diet....

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Study of Effect of Variation of Ionic Strength of the Medium on Velocity Constant of Ru(Iii) Catalyzed Oxidation of Hydroxy Benzoic Acids by Chloramine-T in Acidic Medium

INTRODUCTION IONIC STRENGTH The rate of reaction between charged species are affected strongly by the ionic strength of the solution, which is defined as: –    I         = ½ S ci Zi2 where ci...

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Synthesis and NMR study of N-heterocyclic carbenes (NHC) precursors derived from Tröger’s Base

Introduction Since their discovery in 1931, increasing attention is still paid to the olefination metathesis reactions 1. These reactions correspond to the redistribution of hydrocarbon backbone of the molecules in which carbon-carbon double bonds...

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Synthesis Of Flavone Skeleton By Different Methods

Introduction Flavones (flavus = yellow), are a class of flavonoids based on the backbone of 2-phenylchromen-4-one Apart from flavones other flavonoids are  isoflavonoids, derived from 3-phenylchromen-4-one  structure neoflavonoids, derived from 4-phenylcoumarine structure.The three flavonoid...

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Potentiostatic Electrochemical Preparation and Characterisation of Aluminium Containing Nickel Selenide

Introduction Intermetallic aluminides of transition metals such as nickel exhibit advantageous properties like high tensile strength, low density and corrosion resistance at high temperature1-2. Therefore these materials can be investigated for their possible use...

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Virtual Screening Against Mycobacterium tuberculosisLipoate Protein Ligase B (MtbLipB)and In SilicoADMETEvaluation of Top Hits

INTRODUCTION Tuberculosis (TB) is an infectious disease caused by Mycobacterium tuberculosis that affects the lungs. At present, TB remains to be one of the most prevalent infections, resulting in almost 1.4 million deaths and...

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The study of subsidence on chemical properties of oil resource by using Interferometry synthetic aperture radar technique

Introduction  According to the United States institute of geology, phenomenon of land subsidence is collapse or subsidence of land to down of the earth’s surface which can be scarcely horizontal displacement vector .The movement...

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Net Rearrangements of 4-acetyl-3-(4-substituted phenylamino)-2-(5-nitropyridin-2-yl)isoxazol-5(2H)-ones to Imidazo [1, 2-a]pyridines by Flash-Vacuum-Pyrolysis (F.V.P)

Introduction The thermal or photochemical loss of nitrogen and carbon dioxide from triazoles and isoxazole-5-ones, respectively, have been reported.1 We have reported that the reaction of 4-acetyl-3-(4-substituted phenylamino)-2-(5-nitropyridin-2-yl) isoxazol-5(2H)-ones (1,X: Br, Me) 2 with...

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Synthesis and Characterization of Zinc β-Diketonate Complex Extended to the Macromolecular Polymers

Introduction Macromolecular coordination polymers including b-diketonate fragments have attracted widespread attention because of their potential applications as a high quality advanced materials [1]. The design and synthesis of such macromolecular coordination polymer chains can...

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Synthesis of Polyamide-6/Montmorillonite Nanocomposites by Direct In-situ Polymerization Catalysed by Exchanged Clay

Introduction During the last decade, polymer/clay nanocomposites have received increasing attention from scientists and industrial researchers because they generally exhibit greatly improved mechanical, thermal, barrier, and flame-retardant properties at low clay content in comparison...

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Physico-chemical Investigation of Semiconductor Industrial Wastewater

 Introduction Precipitation, surface water runoff, surface water and groundwater storage and evaporation are involved in the hydrologic cycle, which caused the occurrence of changes to the quality of the water body. For instance, precipitation...

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Soft Synthesis and Nano -Structural Features of Highly Crystalline Asprin An AFM-Investigations

Introduction: Aspirin has a direct irritant effect on gastric mucosa due to inhibition of prostaglandins and prostacyclin and thus causes ulceration, epigastric distress and haemorrhage. So as to reduce the side-effects the controlled release...

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Growth and Characterization of Urea L-valine a Organic Non Linear Optical Crystal

Introduction The search for new organic nonlinear optical crystals has been of great interest because of their wide range of potential applications such as frequency doubling, optical switching, optical disk data storage, optical modulation,...

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Chemical Hazards of Nanoparticles to Human and Environment (A Review)

INTRODUCTION A nanometre (nm) is defined as the millionth part of a millimetre or 10-9 m. In comparison, the diameter of a hair is approximately 50,000 nm; and that of a hydrogen atom approximately...

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Preparation and Analytical Properties of 4-Hydroxybenzaldehyde, Biuret and Formaldehyde Terpolymer Resin

Introduction Removal and separation of metal ions in aqueous solution play an important role for the analysis of wastewaters, industrial and geological samples as well as for environmental remediation[1]. Chelating resins have been widely...

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Validation of Late Season Cornstalk Nitrate Test under Different Natural and Social Environments for Better Fertilizer Management in China

Introduction China uses 7% of global water and 10% of the total arable land in the world to feed 20% of the world’s population. Under such a condition, the use of nitrogen fertilizers to...

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Development and Validation of a Stability Indicating Liquid Chromatographic Method for Simultaneous Estimation of Arterolane Maleate and Piperaquine Phosphate in Combined Dosage Form

INTRODUCTION Malaria is a major public health problem infecting 300-500 million people worldwide and causing more than one million deaths annually globally. An endemic protozoal disease in India with an estimated 70-100 million cases...

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Electrochemical study of Conducting Polymer/Lignin Composites

INTRODUCTION  Conducting polymers are polymeric materials that have both metallic and semiconductor characteristics. A key property of a conductive polymer is the presence of conjugated double bonds along the backbone of the polymer. Conducting...

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Synthesis, Physico-Chemical and Antidiabetic Studies of Zinc Complex of Glimepiride, an Oral Hypoglycemic Agent

INTRODUCTION Glimepiride 1-(p-(2-(3-ethyle-4-methyl-2-oxo-3-pyroline-1-carboxamido)ethyl)phenyl sulfonyl)-3-(trans-4-methylcyclohexyl) Urea is a third generation hypoglycemic sulfonylurea, which is useful in the treatment of non-insulin dependent diabetesmellitus (NIDDM)1-2. Glimepiride is a white crystalline powder, relatively insoluble in water. It exhibits...

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Studies on the Pyrazine Complexes of Some Diaryltellurium Dihalides

INTRODUCTION Aryltclluriumdihalides are known to behave as Lewis acids and form molecular complexes with several nitrogen, oxygen and sulphur donor bases. It has been reported1 that Lewis acidity of tellurium atom falls significantly on...

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Simulation of fluid flow and solididification in the funnel type crystalizer of thin slab continuous cast

 Introduction  The process of continuous casting for producing thin slab steels can be performed in an open-end mold and then cooling followed by preheat treatment and the rolling of the products. The thin slab...

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Screening of Mineral Elements in Cistus ladanifer and Cistus libanotis Essential Oils and their Leaves

Introduction: Cistus ladanifer and Cistus libanotis are two species of genus Cistus (Cistaceae) widely present in the Mediterranean area.  Cistus ladanifer is used for treatment of various skin diseases, as anti-diarrhoeal and as anti-inflammatory...

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Macrobenthic diversity in Horseshoe Crab nesting ground – Balok station, Pahang, Malaysia

Introduction Macrobenthos in marine sediment play an important role in ecosystem processes such as nutrient cycling, pollutant metabolism, dispersion and burial, and in secondary production (Snelgrove, 1998). Structure of benthic community is now frequently...

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Microcalorimetric Study of the Catalytic Properties of SBA-15 Modified with Cu or Fe for Adsorption/Oxidation of methyl mercaptane

INTRODUCTION Sulfur compounds are well known as a problem affecting not only the environment but also human health. Thus, in recent decades research centers dedicated to proposals to protect the environment and public health...

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Prenylated xanthone and rubraxanthone with Antiplatelet aggregation activity in human whole blood isolated from Garcinia griffithii.

INTRODUCTION Plant secondary metabolites are a group of naturally occurring compounds classes biosynthesized by differing biochemical pathways whose plant content and regulation is strongly susceptible to environmental influences and to potential herbal predators. From...

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Design and synthesis of a new androgen derivative using some strategies

Introduction There are several reports on development of some androgen derivatives; for example, the synthesis of 17α-(tributylstannylethynyl)-4-androsten-17-ol-3-one by the reaction of 17-ethynyl-4-androsten-17-ol-3-one with Bu3SnOMe to reflux1. Other data indicate the preparation of 3-oxoandrost-4-en-17β-yl-2-methyl-1H-imidazole-1-carboxylate by...

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Extraction of rare earth and heavy metals, using ionic solvents as extraction medium (A Review)

Introduction Ionic liquids show unique properties such as nonvolatility (negligible vapor pressure), thermal stability, nonflammable nature, lower reactivity, strong ability to dissolve a large variety of organic and inorganic compounds… That’s why we should...

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Crystallographic Evidence for the Host-Guest Interaction of Metallamacromolecules

Introduction Macrocyclic host molecules such as calixarenes, cucurbiturils, and cyclodextrins act as catalytical nanoreactors,1 drug delivery agents,2 or molecular detectors.3 The successful application of these molecules often requires functionalization or derivatization with active functional...

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