Volume 28, Number 1

Zn[(L)-proline]2: A Novel and Recyclable Catalyst for the Synthesis of 2-Aryl-4(3H)-quinazolinones in Solvent-Free Conditions

Synthesis, Physico Chemical and Spectral Studies of Mercury Complex of Glibenclamide; An Oral Antidiabetic Drug

Introduction Man has been in continued search for chemotherapeutic agents right from the earliest times, about 2000 B.C. or even earlier. As a result of this research several naturally occurring substances, plant materials and...

Synthesis and Characterization of Urethane Modified Polyestreamide

Introduction In recent years synthesis of the polymers from renewable resources has attracted considerable attention of the research scientists and academia through out the world, because of the continuous hike in price of petroleum...

Phytochemical Analysis of Leaves of Catharanthus roseus A. from Benoda of Warud Tahsil of Maharashtra State

Chemistry of the Thiazolidinone alone or along with Thiourea substituted Amine Complexes of Zinc (II)

Introduction Chemistry of complexes derived by partial or complete replacement of strongly coordinated ammonia, halogen, cyanide or thiocyanate by organic ligands like Schiff’s bases have rare mention [1-3] in literature. Products obtained by replacement...

Infrared Measurements of Sodium-Lead-Barium-Aluminium-Phosphate Glass

Introduction Phosphate Glasses are both scientifically and technologically important materials because they generally offer some unique physical properties better than other Glasses1. Phosphate glass exhibit very important physical properties such as low melting temperature,...

A New Tetrahydropyrano[3,4-c]pyran-1(3H)-one Iridoid from Viburnam cylindricum

Introduction Viburnum cylindricum belong to the family Capriofoliaceae evergreen shrubs with grey bark, leaves oblong lanoceolate or ovate glaucous green above occurs in moist shaded oak forest 1200-2500 mt. [1] From leaves of V....

Synthesis and Characterization of Some Lanthanone Complexes of Possible Biologically Active Ligands

Introduction Condensation reaction between carbonyl compounds and primary amines have played an important role in the synthesis of new macrocyclic ligands (1-5). Usually such reactions are carried out in the presence of suitable metal...

Thermodynamic and Biological Studies of Some Bivalent Metal complexes with 2,4-Dihydroxy butyrophenone Oxime (DHBOX)

Introduction The nitrogen, sulpher donar compounds like oxime, semicarbazide, thiosemicarbazide have significance due to their wide application in industries, medicine, detection and determination of various metal ions1,2. The different type of phenones and their...

An Efficient Synthesis of Schiff Bases Containing Benzimidazole Moiety Catalyzed by Bismuth Trichloride Under Microwave Irradiation

Compounds containing a benzimidazole moiety attached to a heterocyclic system are important chemical classes as a result of their significant biological activities against several viruses such as HIV, herpes (HSV-1), influenza, and Epstein-Barr [1−3]....

xNew Visible Spectrophotometric Method for the Determination of Cefixime Trihydrate in Pharmaceutical Formulations

Introduction                                       Suprax (cefixime) is a oral suspension, a semi synthetic cephalosporin antibiotic for oral administration.chemically , it is (6R,7R) 7- [2- (2-amino-4-thio-zolyl) glyoxylamido]- 8- oxo-3- vinyl 5-thia-1-azabicyclo[4.2.0] oct-2-ene-2carboxylic acid.cefixime is a broad spectrum antibiotic...

Kinetic Study of PMMA Synthesis by Batch Emulsion Polymerization

Introduction Polymethyl Methacrylate (PMMA) has been used in formation of in-house and deep sea aquarium, bombardier nose, motorcycle helmet visors etc. In medical technologies it has been used for bone implants, denture formation, cosmetic...

Investigations in the Refractrometric Study of S-trizinothiocarbamides in Dioxane-water Systems

Synthesis of Dodecaaza-tetrachlorotricyclodotriacontane (DACD) Macro Cyclic Complexes of Transitional Metal Ions (cu++) Present in Pulp and Paper Mill Effluents

Introduction Hazardous metal ions, such as Cu, Ni, Co etc.have become prominent pollutants. Transition metals are a meal of high specific gravitycharacterized by strong attraction to biological tissues with slow elimination. Many transition metalsare...

Seasonally Variation of Nitrate Level Before and After Fertilizers Application in Ground Water of Sikar District (India)

Introduction The physical, chemical and bacterial characteristics of ground water determine its usefulness for domestic, industrial, municipal and agricultural applications (1, 4, 17, 19). The changes in modern agricultural practice have allowed an increased...

Synthesis and Biological Studies of Some 2,3-Diphenylthiazolidin-4-ones and Condensed Pyrazolines

Introduction Benzothiazole derivatives were prepared and known to exhibit various biological activities as anti-tuberculotic1, anti-allergic2. Pyrazole ring system is of some practical importance, because many drugs and medicines contain a pyrazole ring system. As...

Effect of Cetyltrimethyl Ammonium Bromide on the Kinetics of Iodination of Aniline by Iodine

Introduction The investigation of micellar catalysis has provoked a great interest during last few decades, since the study of micelle catalyzed reaction might provide a basic interpretation of some aspect of catalysis.1-4 The continuing...

Synthesis, Characterization and Microbiological evaluation of Co(II), Cu(II), Zn(II) Cr(III) and Fe(III) complexes of 2,4-dimethylaniline salicylaldimine

Introduction Schiff base derived from salicylaldehyde and aromatic amines containing nitrogen and oxygen donor atoms are structural models of complicated biological systems1,2, and their metal complexes have wide applications such as biochemical, analytical, industrial,...

Synthesis and Spectroscopic Studies of Metal Complexes of Schiff Base Derived From 2-acetyl naphtho [2,1-b] furan.

Introduction The Schiff bases are the most versatile and thoroughly studied ligand in coordination chemistry. Metal complexes of Schiff bases have been reported as tuberculostatic, antitumor, antibacterial and antifungal agents. Transition metal complexes with...

Equillibrium Modelling of Adsorptive Removal of Methylene Blue Using BGA

Introduction Several biological, physical and chemical methods have been used for the treatment of industrial textile waste water containing dyes. However, many of the methods are cost prohibitive. Consequently, adsorption technique seems to have...

Synthesis of Some Thiazino-pyrazoles as Potential Fungicides

Introduction Pyrazole derivatives possess diverse chemical reactivity and broad spectrum of biological activities . A number of substituted pyrazoles are used as fungicides, insecticide, pesticides, herbicides in the field of agriculture (1,2). They are...

Preparation and Biological Evaluation of 3-amino-4-aryl-4, 5- dihydro-1-N-tolyl pyrazolo [3, 4-d] pyrimidines Derivative

Introduction Extensive studies have been made in the field of synthesis of pyrazol [3, 4-d] pyrimidines [1-10] Consideration research has been under taken to extend activity and reduce toxicity of pyrazolo [3, 4-d] pyrimidine....

Corrosion Inhibition of Cefuroxime Axetil on Mild Steel with Acid Solution

Introduction Mild steel is one of the alloy which find applications for making the entire machinery in industries and for construction of industrial buildings. The surface of the mild steel must be freed from...

An investigation of Hydraulic Conductivity Determination for Anisotropic Soils

Improved Method for the Determination of Inorganic Anions in Roselle (Hibiscus sabdariffa L.) by Suppressed Ion Chromatography

Introduction Ion chromatography (IC) is one of the simplest and most effective techniques to determine both anions and cations owing to its high sensitivity, rapidity and ease of operation [1-3].The presence of ligand in...

Synthesis of 5-arylidine-2-(3, 4, 5-trimethoxyphenyl)-3-(4-phenylthiazol-2-yl) Thiazolidin-4-one Derivatives as a Novel Class of Antimicrobial Agents

RP-HPLC Method for the Simultaneous Estimation of Sitagliptin Phosphate and Metformin Hydrochloride in Combined Ttablet Dosage Forms

Introduction In this experiment, efforts were focused on making the most of all the inherent advantages offered by reversed-phase HPLC  to develop a time saving, economical and practical method which would be of immense...

Synthesis and Spectroscopic Studies of Zirconium(IV) Porphyrins with Acetylacetonate and Phenolates at Axial Positions

Introduction The involvement of porphyrins in many biological processes and the possibility to tailor their physical and chemical properties at the molecular level including very large dipole moments, polarizability, non-linear optical response, absorption spectrum,...

Waste Tendu Leaves From Beedi Industry Utilized For Removal of Sulphur Dye From Textile Waste Water

Introduction Ecological balance is threaned by increasing environmental pollution due to rapid industrialization in the world and textile industries are one of the sources of the environmental pollution1. The textile industries not only causes...

Synthesis of Spermidine using Solidphase Synthetic Strategy

Introduction Solid phase synthesis is a methodology whereby synthetic transformations are conducted with one of the reactant molecules attached to an insoluble material referred to as the solid support. It was originally developed for...

Synthesis and Characterization of Zirconium (IV) Derivatives of Meso-tetra(p-methylphenyl)porphyrin with Acetylacetonate and Different Phenolates at Axial Positions

Toxicological Assessment of Commonly Used Plastics

Introduction Production and application of plastics has increased several folds during the recent years, Plastics are widely used in household, hospitals, agriculture, automobiles, industries and buildings. Plastics are organic polymers, known to be biologically...

A Novel Synthesis and Antimicrobial Studies of 3-(4-Substitutedthiocarbamidophenyl)-N, N-dimethyl-3-Pyridin-2-yl-propan-1-amine

Introduction Recently in this laboratory the synthetic applications of cynoguanidine and 1, 3-diformamido-thiocarbamide had been briefly explored1. As evident from structure of 3-(4-substituted thiocarbamidophenyl)-N, N-dimethyl-3-pyridin-2-yl-propan-1-amine, it possesses chloro, amino, methyl and ethyl reactive sites...

Application of the Claisen Condensation Reaction to 3 Aromatic Esters that are found in Nature

Introduction The Claisen condensation reaction of the 3 aromatic esters; methyl butyrate (apple) (figure 1), isopentyl acetate (banana) (figure 2) and benzyl acetate (jasmine) (figure 3), involves a nucleophilic substitution reaction (Bruice, 2007; Rishan...

Study of 2-(piperidine-1-ylmethyl)cyclohexanamine Structure Synthesis Based on Oxime Protected Compounds in Mannich Mechanism

Introduction Victor mir prepared oximes for the first time1. One of the important applications of oximes, is using these compounds at pharmacy2,3. These compounds are broadly used as carbonyl derivatives and or carbonyl group...

Cloud-Point Method of Extraction Co(II) and Determination by FAAS

Introduction In the recent years, pollution of the environment by heavy metals has received  considerable attention. These elements accumulate in living organisms and are of high toxic potential. Their wide technological use (fertilizers, mining,...

Adsorption of Zinc Ion on Leonardite Prepared from Coal Waste

Introduction Heavy metal like zinc (Zn) is often found in plating, galvanizing and roller coating operations [1]. Althoughzinc is essential minerals but too much is not beneficial. The increase of zinc concentrations above the...

The investigation of the influence of back contact metal and ligand exchanging on the air stability of ambient processed schottky Photovoltaic Cells Based on PbSe CQDs

Introduction During the past decade, nanomaterials, nanostructures and their applications have been widely investigated.1-12 Also, enormous research has been done on nanoparticles6, nanowires7-9 and nanocomposites10-11 to develop low-temperature processed photovoltaic (PV) cells. Because of...

Perconcentration of Ni(II) from Sample Water by Modified Nano Fiber

Introduction Ni at trace concentrations acts as both a micronutrient and a toxicant in marine and fresh water systems 1-8.This element is needed by plants at only very low levels and is toxic at...

Interpenetrating Network Polymer Hydrogels of Sodium Alginate and Poly(acrylic acid) for Controlled Release of Prazosin Hydrochloride

Introduction Drug release from solid matrices systems, made of polymer(s) and drug(s), is a basic concept for studies on controlled drug delivery. The most interesting class of polymers in this application is given by...

Comparative Study of Adsorption Isotherms two Non-Steroidal Anti-Inflammatory Eye Drops, Indomethacin and Diclofenac on Carbon Nanotube

Introduction Non-steroidal anti-inflammatory drugs (NSAIDs) exert their effect by virtue of cyclo-oxygenase inhibition in the arachidonic acid cascade (1, 2). Of these compounds, diclofenac sodium is also known to interfere with the lipoxegenase pathway...

Neutron Activation Analysis of Some Nigerian Bitumen Samples and their Components

Introduction Bitumen is a mixture of organic liquids that are viscous, black, sticky and soluble in most organic solvents. The composition of bitumen has been variously reported to consist of highly condensed polycyclic aromatic...

The One-Pot Synthesis of Pyrano[2,3-d]pyrimidinone Derivatives with 1,4-diazabicyclo[2.2.2]octane in Aqueous Media

Introduction Owing to their pharmacological activity, Barbituric (BA) and Thiobarbituric (TBA) acids, as well as their various substituted derivatives, are very important compounds in biological chemistry and medicine. Their biological activity is mainly related...

Influence of Soluble Salt Matrix on Mechanochemical Synthesis of Lanthanum Cobaltate Nanoparticles

Introduction LaCoO3 has many practical applications owing to its excellent physical and chemical properties. The LaCoO3-based materials have been known to show high catalytic properties for oxidation of carbon monoxide, methane, hexane, and toluene1-4....

Improvement of Physico-Chemical Properties of Silk Fibre Modified with Acid Anhydride Monomer under Redox Initiation System

Introduction Silk is termed as “Queen of Fabrics” for its unique characteristics and have never been equaled in any other fibre­­1­­­. Silk fabrics are luxurious in appearance and lead themselves readily to style changes2....

Study of Flouride Level in the Ground Water in the Dharmaram Village of Nizamabad Dist. A.P.

Introduction Fluorine has not only notable chemical qualities but also physiological properties of great interest and importance for human health and well-being (Fluorides and human health 1970). The effects of fluorides on the health...

Silica Sulfuric Acid as a Efficient and Recyclable Solid Acid Catalyst for the One-Pot Synthesis of 2,4,6-Triaylpyridines Under Solvent Free Conditions

Investigation of Adsorption Isotherm of Oxymetholone as a Kind of Steroid Drug by Multi-Wall Carbon Nanotube

Introduction                                                   Beside the fatness, Phospholipid and Terepene, the lipid essence of plant and animal is consisted of steroids [1]. The structure of these molecules is a 4-ring shaped system. Steroids are the modified Trepene...

Simple and Selective Synthesis of 1,3-Benzoxazine Derivatives

Introduction Triphosgene [bis(trichloromethyl)-carbonate] a white crystalline compound, has emerged as a diversified reagent for the synthesis of varieties of heterocyclic ring systems1. It has several advantages such as safe in handling, less hazardous, and...

Determination of Abamectin by Dispersive Liquid-liquid Microextraction Combined with High-Performance Liquid Chromatography in Fruit Juice Samples

Introduction The use of pesticides in modern agricultural practices is a major issue for the protection of crops against pests and diseases. Event though, several reasons for not using pesticides have come out as...

Immobilization of Chetoceros sp Microalgae with Silica Gel through Encapsulation Technique as Adsorbent of Pb Metal from Solution

Introduction Contamination of heavy metals in environment is one of serious problems to be controlled currently 1.  This case occurs because of increasing of heavy metal use in industry followed by negative effects of...

Ultrasound-assisted Emulsification Microextraction Method Based on Applying Low Density Organic Solvents as a Sensitive and Efficient Sample Preparation Method for Determination of Abamectin in Fruit Juice Samples

Introduction                                                                                                                                 Abamectin belongs in the family of the naturally occurring avermectins that are produced from the fermentation of the soil microorganism streptomyces avermitilis. Abamectin is a mixture of two components, avermectin (B1a) and avermectin...

Synthesis and Characterization of Palladium(II) Complexes with 2-(2′-hydroxylphenyl)benzoxazole, 2-(2′-hydroxyl phenyl)benzothiazole or the Mixed Ligands

Introduction                                    Currently there is a considerable interests in the coordination chemistry of heterocyclic ligands contain nitrogen, oxygen and sulfur donors[1-10]. Partially because of the biological significance of such ligands. Thus benzothiazole derivatives are...

Theoretical and Quantitative Structural Relationship Study on Fullerenes Polarizabilities on the basis of Monopole-Dipole Interactions Theorem

Introduction The science and technology of nano-scale materials was applied in studies of nanotechnology and the results have been applied in many areas of sciences such as computers, microchips, sensors, actuators and machines fall....

Synthesis and Characterization of Nano-Sized CeO2 in the Presence of Nonionic Surfactant and by Different Precipitation Agents

Introduction In the past few years, much attention has been focused on the research field of nano-crystalline metal oxides both because of their fundamental importance and the wide range of potential technological applications (1-6)....

A New HPLC Method for Determination of Losartan in Human Plasma and its Application in Bioequivalence Studies

Introduction The renin-angiotensin (RAS) is a major regulator of blood pressure (BP),1Losartan (COZAAR) is the prototype of a new class of orally active, non –peptide angiotensin II receptor antagonists (ARBs) able to inhibit the...

The Study of Methanol Separation Columns Control

FT-IR Spectroscopic Studies and Gaussian 03 Calculations of 2, 2′-Ethylenebis(nitrilomethylidene)diphenol

Extraction of Copper(II) and Lead(II) using by Nano and Micron size Sorbents Poly (Dimethylsiloxane) Microchannels

Introduction The determination of metal ions in natural samples such as waters, soils and biological fluids is very important part of environmental and public health studies. However, the direct determination of metal ions at...

The Unshifted Atom-A Simpler Method of Deriving Vibrational Modes of Molecular Symmetries

Volumetric Studies of Sodium Dodecyl Sulphate in Aqueous and Aqueous Amino Acid Solutions

Introduction Volumetric studies of  SDS in aqueous  and  in aqueous amino acid  provides great help to determine the nature of  interactions and properties of this  solution. And it is very important because of great...

Synthesis New and Novel Aryl Thiazole Derivatives Compounds

Introduction Thiazoles are 5-membered cyclic compounds that nitrogen and sulfur group at different situation1. This compound have a lot of derivations and because of its derivations type have a lot of application in various...

Simulation of Methanol Production Process and Determination of Optimum Conditions

A Green, Reusable and Highly Efficient Heterogeneous Catalyst for the Synthesis of Arylpyrazoles using Nano-Fe2O3

Introduction Recently, organic reactions catalyzed by nanoparticles (NPs) have attracted much attention. Consequently, there is a great demand for development of novel catalysts with higher catalytic activities, lower prices, good recyclability and less pollute...

Determination of the Efficiency of Treated Sludge as a Fertilizer

Introduction The ever increasing human populations worldwide will increase the amount of domestic and biological wastes produced by humans. This is evident from the statistics provided by Jabatan Perangkaan Malaysia (2010) which stated the...

Mathematical Modeling and CFD Simulation of Hydrocarbon Purification Using Membrane Technology

Introduction Membrane separation technology has become an interesting technology for separation and purification of hydrocarbon mixtures. Separation of liquid mixtures through membrane technology can be carried out by using pervaporation (PV) process. Pervaporation is...

Enviromentaly Friendly Functionalization of Carboxylated Shortend Multi-Wall Nanotubes with Sunset Yellow Dye

Introduction Sunset yellow is an azo compound that is found in shoe polish, industrial products and common food products such as candies, beverages and bakery products. This dye has a nitrogen to nitrogen double...

Prediction of Flow Behavior of Crude Oil-in-Water Emulsion through the Pipe by Using Rheological Properties

Introduction Heavy and extra heavy crude oils methods of transportation have a main challenge with their high viscosity. From 1975 to 2000, global demand for crude oil had growth rate about 1% average. “Emerging...

Zn[(L)-proline]‚ as a Recyclable and Green Catalyst for Efficient and One-pot Three-Component Synthesis of 1,4-Dihydro- pyridines Under Solvent-Free and Microwave Irradiation Conditions

Preparation and Characterization of Poly (vinyl alcohol) Membrane for Pervaporation Separation of Water-Organic Mixtures

Spectrophotometric Determination of Colchicine by Phase Transfer Catalyst

Introduction Colchicine is an alkaloid that has been used for centuries in acute gouty arthritis. Recently it has been employed for an increasing number of diseases and disorders [1-6]. The drug also presents an...

CFD Simulation of Mass Transfer in Membrane Evaporators for Concentration of Aqueous Solutions

Sol-gel Synthesis of Lanthanum, Cobalt and Titanium Oxide Composite

Introduction Titanium dioxide (TiO2) is well known as a photocatalyst and widely applied for air and waste water purification. Titania is known to have three natural polymorphs, i.e. rutile, anatase, and brookite. Only anatase...

Application of CFD Techniques for Prediction of NH3 Transport Through Porous Membranes

Physicochemical Studies of Ni-, Co-, and Pt- Promoted Movnbox Catalysts Synthesised by Impregnation Method

Introduction There have been recent reports of the use of propane instead of propylene as the starting material for the production acrylic acid [1,2].  Propane’s lower prices and abundance make it an attractive and...

Mathematical Modeling and Numerical Simulation of Wastewater Treatment Unit Using CFD

Introduction Nowadays, wastewater treatment is of vital importance in all industries. It can be defined as the process of removing contaminants from industrial and municipal wastewater. Wastewater treatment can be carried out using physical,...

Optical Absorption in V2O5-Bi2O3 Evaporated Thin Film

Introduction Studying optical absorption particularly the shape and shift of the absorption edge, is a very useful technique for understanding the basic mechanism of optically–induced transitions in crystalline and non-crystalline materials, as well as...

Modeling of Organic Mixtures Separation in Dense Membranes Using Finite Element Method (FEM).

Introduction Nowadays, membrane technology has become one of the effective technologies with wide applications. One of the membrane processes is pervaporation (PV) which is used for separation of liquid mixtures. Pervaporation is a membrane-based...

Comparison of Woods Extractives Coming from Species Commonly used in Manufactures of Wood

Introduction Wood extractives is the part of wood which is soluble into a solvent, their chemical composition depends of wood nature and experimental conditions for the extraction, the majors factors being: the wood species,...

Theoretical Studies on Copper Extraction by means of Polymeric Membrane Contactors

Introduction Due to increasing copper world demand, there is a strong need for copper extraction from low grade ores. Extraction of copper from acidic solutions is an important process in hydrometallurgy and chemical industries....

The Synthesis of a New Reagent for Detecting Cyanide

Introduction Cyanide is a molecule containing cyano group (-C≡N) which is unstable and can easily be broken down or transformed even in normal light and temperature 1-3. Cyanide is a class of highly toxic...

Mathematical Modeling of Gas Separation in Flat-sheet Membrane Contactors

Introduction Current carbon dioxide removal technologies are based on a variety of physical and chemical processes such as adsorption, absorption, cryogenic and membrane contactors [1]. Conventional processes for the removal of CO2 suffer from...

Modification of Mesoporous Silica MCM-41 and its Applications- A review

Introduction Over the past few decades studies in nanoscience and nanotechnology has emerged as one of the most intensively explored fields. The massive quantity of new literature pertaining to nanoscale materials in a wide...