Volume 31, Number 3
Volume 31, Number 3
High-Pressure Structural Phase Transition in Neptunium Compounds
Introduction The high pressure structural phase transitions in rare earth compounds have been extensively studied both experimentally and theoretically in the recent past [1, 2]. At ambient pressure, it has been found that neptunium...
Read MoreCuO Nanoparticles as an Efficient Catalyst for the Synthesis of Flavanones
Introduction Flavonones are known to exhibit numerous useful biological properties including antimicrobial, antitumor, antioxidant, and anti-inflammation.1-5 The methodology most widely used to prepare flavanones involves the isomerization of appropriately substituted 2-hydroxy chalcones, in turn achieved...
Read MoreInvestigation of Toxic Heavy Metals in Drinking Water of Agra City, India
Introduction Metals are ubiquitous in the environment. It can be accumulated in three basic reservoirs like water, sediment and biota. Sources of heavy metals in river mainly include natural occurrence derived from parent material...
Read MoreSynthesis of Nano-Ag particles using sodium borohydride
Introduction Nanotechnology deals with processes that take place on the nanometer scale, that is, from approximately 1 to 100 nm. Properties of metal nanoparticles are different from those of bulk materials made from the...
Read MoreMagnetic and Spectral Study of Some Mixed Ligand Complexes
Introduction The schiff’s bases of triazole derivative and their metal complexes possess pharmacological acivities.1-8 It is found that pharmacological activity of triazole derivative is enhanced ridiculously on coordination with metal ions.6 Present paper deals...
Read MoreSynthesis of Oximes from the Corresponding of Organic Carbonyl Compounds with NH2OH.HCl and Oxalic Acid
Introduction Oximeshave been used for the protection and purification of carbonyl compounds in organic synthesis1.Also,these compounds have antimicrobial2-3, antioxidant4, antitumor5, anti-depressive6, antiviral agents and anticonvulsant properties7.Recently, the oximationmethods have been reviewed8by us. The lack...
Read MorePolyester-Bentonite Clay Composite: Synthesis, Characterization and Application as Anticorrosive Agent
Introduction Polymer clay composites which consists of clay particles dispersed in a polymer matrix have been prepared for different applications [1-2]. Clay fillers are widely used in polymers to produce cost effective, strong and...
Read MoreAnalytical Characterization of two new related impurities of Diltiazem by High Resolution Mass spectrometry and NMR techniques096
Introduction Diltiazem (DTZ), (2S, 3S)-3-acetyloxy-5-[2-(dimethyl-amino)ethyl]-2-(4-methoxyphenyl)-2,3-dihydro-1,5-benzothiazepin-4(5H)-one, is a benzothiazepine calcium-channel blocker with peripherical and coronary vasodilator properties. It is widely used in the management of angina pectoris and hypertension. Treatment with diltiazem is generally well...
Read MoreSimultaneous Determination of Potassium Sorbate and Sodium Benzoate in Doogh Using High Performance Liquid Chromatography
Introduction ‘Doogh’ is a typical Iranian drink based on fermented milk which its dry matter is standardized by diluting of yogurt (after fermentation) or milk (before fermentation). It is considered as Iran national beverage....
Read More(Caffeine)(tetrahydroborato)zinc Complex [Zn(BH4)2(caf)]: A New Stable and Efficient Reducing Agent
Introduction Zn(BH4)2 is the modified borohydride agents which has better solubility in aprotic solvents, so it use and application is interesting in organic synthesis. Zinc borohydride is unique because of the coordination ability of...
Read MoreDetermination of Cyproheptadine hydrochloride in Pure and Pharmaceutical forms : A Spectrophotometric study
Introduction Cyproheptadine hydrochloride (CPH), chemically known as 4-(5H-dibenzo [a,d]cyclohepten-5-ylidene)-1-methylpiperidine hydrochloride (I), is an antihistaminic, anticholinergic and antiseretonergic agent. It also acts as a 5-HT2 receptor antagonist as well as blocking calcium channels1. Cyproheptadine is used to treat allergic reactions...
Read MoreMagnetic Ionic Liquid [bmim][FeCl4] as an Efficient Catalyst for the Synthesis of 2-Aryl Benzimidazoles and 2-Aryl Benzothiazoles Derivatives
Introduction Ionic liquids (ILs) have been applied in green catalytic technologies and have been studied widely in reactions early after their discovery because of their individual unique properties such as low vapor pressure, wide...
Read MoreSynthesis and characterization of manganese ferrite spinel for adsorption of malachite green from water
Introduction Spinels are important class of mixed-metal oxides, which has the general chemical composition of AB2O4. They are very important magnetic materials because of their interesting magnetic and electrical properties with chemical and thermal...
Read MoreIrrigation Water Quality Evaluation of Aldelam Groundwater
Introduction The quality of groundwater is determined by the physical and chemical characterization of groundwater, which is the major source of water for domestic, agricultural, and industrial purposes in many countries. Groundwater quality has recently begun to be of concern as...
Read MoreSynthesis, Characterization, and Antibacterial Activity of Cu(II), Ni(II), and Zn(II)Complexes of 14-Membered MacrocyclicTetraaza Ligand
Introduction Macrocyclic complexes and their cyclic ligands playa major role in expanding the field of bioinorganic chemistry.1Not surprisingly, the number of studies oncomplexes of macrocyclictetraaza ligands involving the synthesis of new ring systems,and the...
Read MoreQuantum chemical study on the corrosion inhibition property of some heterocyclic azole derivatives
Introduction The dissolution rate of steel during cleaning, pickling, scaling and etching is quite high in acidic medium, the inhibition of such dissolution may be achieved with organic compounds containing π-electrons and /or hetero...
Read MoreA Rapid Method for Detection of Refined Olive Oil as Adulterant in Extra Virgin Olive Oil by Differential Scanning Calorimetry
Introduction Extra virgin olive oil is a product containing high nutritional quality and has great benefits for consumers. Refined olive oil is the most valuable oil because has the potential effects on human health....
Read MoreAdsorption of Si6O12 on CNTs in view point of NMR shielding tensors and NBO analysis: A novel material for drug delivery
Introduction SWCNTs have considered as the leading candidate for nano-device applications because of their one-dimensional electronic bond structure, molecular size, and biocompatibility, controllable property of conducting electrical current and reversible response to biological reagents...
Read MoreTesting new surfactant formulations on stable 20-80% water-in-diesel emulsion fuel production (one week stability)
Introduction The trend toward low emmission fuels is increasing world wide.The current research relates to producing stable 20% water mixed diesel fuel. this is because the existance of water in the diesel fuel is...
Read MoreCompare Removal of Reactive Red195 and Blue19 by Nano TiO2-ZnO
Introduction Azo dyes having aromatic structure, are resistant to biodegradation. They can also reduce amount of oxygen the water, Whereby Increases the activity of anaerobic bacteria in the water[1]. However, Removal dye of the...
Read MoreCorrosion Inhibition Efficiency of Bio Waste on Mild Steel in Acid Media
Introduction Corrosion is the disintegration of an engineering material into its constituent atom due to chemical reaction with its surroundings or electrochemical oxidation of metal in reaction with an oxidant such as oxygen.(1)The field...
Read MoreMechanism of the Polymerization of Styrene and 2.3 Dihydro-4H-Pyran Catalyzed by H3PW12O40 Catalyst.
Introduction Polystyrene derivatives that contain functional groups are of great interest owing to their excellent properties. That is why they have found a wide range of commercial applications [1- 3]. These kinds of copolymers...
Read MoreFrying Stability Evaluation of Rice Bran Oil Blended with Soybean, Mustard and Palm Olein Oils
Introduction Frying is the fastest and oldest cooking method of food. In deep fat frying, the food is totally immersed in hot (160-190 0C temperature) oil. Blended oils are gaining popularity worldwide due to...
Read MoreSynthesis of Thioacridine Derivatives Using Lawesson’s Reagent
Introduction Acridines represent an important class of nitrogen heterocycles having several significant properties such as pigment, dye properties, photochemical/physical properties, electrochemical properties, potent anti-malarial, anticancer and anti-fungal activity etc [1, 2]. Natural and synthetic...
Read MorePeculiarities of chemical composition of sainfoin seeds powder
Introduction Place of sainfoin in the legumes family. Perennial grasses are the most efficient and least energy-consuming forage crops. They allow to solve the problem of obtaining balanced protein forage, ensure preservation of soil fertility,...
Read MoreDevelopment of A Novel Method for the Detection of 54 Pesticides in Gcms-Ms-Tqd
Introduction Pesticides can broadly be classified as insecticides, fungicides and herbicides. Insecticides are mainly OCs, OPs, SPs, Herbicides, Fungicides, and Carbamates. Organochlorine compounds are synthetic organic insecticides that contain carbon, hydrogen, chlorine and sometimes...
Read MoreStudy of the profile concentration of a chemical through a sandwich packaging
Introduction Polymer Materials take a good place in the packaging field [4], so their contact with some product two types of matter transfer occur [4]. First type when the liquid entering the polymer while...
Read MoreNanocomposite hydrogels based on water soluble polymer and montmorillonite-Na+
Introduction Hydrogels are three dimensional lattices containing hydrophilic polymer chains connected together via covalent or reversible crosslinking points (1-4). They can swell, absorb a large amount of water in a short time and retain...
Read MoreUsing Modified Sorbents for Reducing Negative Impact of Oil-Containing Industrial Wastes on Natural and Artificial Waterways
Introduction Treating industrial wastewaters is closely related to environment protection, and is today’s urgent problem. One of the main tasks of preserving the ecosystem of the Kuban River is decreasing the anthropogenous load, and...
Read MoreAnticancer and antiviral estimation of three Ulmus pravifolia extracts and their chemical constituents
Introduction Cancer is the abnormal growth of cells that can lead to death. According to the American Cancer Society, deaths arising from cancer constitute 2–3% of the annual deaths recorded worldwide. Although there are...
Read MoreHeterogenous Photocatalysis Treatement of Azo Dye Methyl Orange by Nano Composite Tio2/Diatomite
Introduction The treatment of colored wastewaters produced by the textile industry is a problem that has recently been heavily researched, [1, 2, and 3]. Heterogeneous Photocatalysis is one method for treatment of such wastewater;...
Read MoreLiquid-Liquid Extraction Of Zinc By 3-Methyl-Quinoxaline-2-Thione From Nitrate Medium
Introduction Zinc is an important base metal involved in various applications in metallurgical, chemical and textile industries [1-5]. It is mainly recovered from primary sulphide concentrates. A part of zinc is also recovered from...
Read MorePhase Diagrams of W/O Microemulsion Stabilised By Non-ionic Surfactants ToBe Used As Templates ForMicroemulsion Polymerisation
Introduction Microemulsions are colloidal dispersions of eitherwater-in-oil and oil-in-water stabilised by amphiphiles (surfactants). They are transparent, homogenous, and isotropic dispersions. Microemulsions have merits over other vehicles or solvents due to their improved stability, solubilisation...
Read MoreBiochemical study and gene expression of Glutathione-S-Transferase (GST)in induced asthma in Rat
Introduction Glutathione S-transferases (GST) is a family of enzymes that play an of detoxification enzymes. All eukaryotic specie has multiple GSTisoenzyme that are bound by cytosolic and membranes (1). The role of glutathione S-transferases...
Read MoreSynthesis, structural visualization, spectroscopic, and thermal studies of charge transfer Cu(II), Ni(II) and Zn(II) bromides-carbamide complexes at elevated temperature
Introduction Carbamide is physiologically very important. It is the chief nitrogenous product of protein metabolism. Carbamide has a melting point of 132 °C, soluble in water and ethanol, but insoluble in ether. Carbamide is...
Read MoreTribromoisocyanuric acid (TBCA) as a mild and metal free catalyst for the acetylation and formylation of hydroxyl groups under solvent free conditions
Introduction Protection-deprotection steps of active proticfunctional groups are frequently required in the synthesis of multifunctional compounds. The protection of alcohols and phenols by the formation of ester is one of the most important and...
Read MoreTetrabutylammonium Bromide: An Efficient Catalyst for the Synthesis of Xanthenediones under Solvent-free Conditions
Introduction Xanthene derivatives especially xanthenediones have been attracting great interest because of their importance in synthetic organic chemistry. Many products that contain the subunit of xanthene exhibit use fuland diverse biological activities such as...
Read MorePreparation of Stereocomplex Polylactide Bioplastics from Star-shaped/Linear Polylactide Blending
Introduction Poly(L-lactide) (PLLA) is a biodegradable semi-crystalline polylactide (PLA) that has attracted much interest for bioplastic and biomedical applications because of its renew ability and biodegradability1-4. However, poor mechanical properties, non-heat resistance and slow...
Read MoreNovel Polymer Nanocomposite With Silicon Carbide Nanoparticles
Introduction In order to maintain further rapid development of aircraft industry, rocket construction, astronautics, nuclear power production, electronics industry, radio engineering and other fields of industry, the polymer-based materials with high durability, thermal stability,...
Read MoreApplication of porphyrin modified SBA-15 in adsorption of lead ions from aqueous media
Introduction Mesoporous silica materials have attracted considerable attention as support for different molecules, because these materials possess high surface area, large uniform pores, photostability, rigidity, and diverse surface properties by various types of modifiers...
Read MoreTheoretical investigation of the zirconium carbide nano-sheet: A study of NMR, NBO, EPR and Polar
Introduction The three known allotropes of carbon are amorphous carbon, graphite, and diamond. New allotropes of carbon that are being synthesized around the world include fullerenes, carbon nano tubes (CNTs) and graphene due to...
Read MoreQuantum Mechanical Study on the Adsorption of Drug Gentamicin onto γ-Fe2O3 nanoparticles
Introduction Gentamicin is a commonly used antibiotic which prevents bacterial infection around the implant. It is an aminoglycoside antibiotic, and can treat many types of bacterial infections, particularly Gram-negative infection. It is also one...
Read MoreA novel validated RP-HPLC-DAD method for the simultaneous estimation of Metformin Hydrochloride and Canagliflozin in bulk and pharmaceutical tablet dosage form with forced degradation studies
Introduction Metformin Hydrochloride Metformin Hydrochloride is an orally administered biguanide derivative used to lower blood glucose concentrations in patients with non-insulin-dependent diabetes mellitus1. Metformin Hydrochloride improves insulin sensitivity and decreases insulin resistance by inhibiting Complex...
Read MoreImipramine Drug Delivery Via Swbnnts and Dwcnts: NMR and Solvent Effect
Introduction Imipramine is used in the treatment of depression, such as depression associated with agitation or anxiety. It is similar in efficacy to the antidepressant drug moclobemide [1-4]. It has also been used to...
Read MoreA Unique Bypass to the Carbonyl Cluster ‘Nucleus’ Using the 14n Rule
Introduction Transition metal carbonyl clusters have stimulated immense interest for several decades largely due to their intriguing structural architecture, numerous potential industrial applications and challenging bonding properties. In this regard, the work by Wade...
Read MorePredicting ESR Peaks in Titanium (III), Vanadium (IV) and Copper (II) Complexes of Halo Ligands by NMR, ESR and NQR Techniques: A DFT Study
Introduction We applied ADF 2010.02[1-10] to fifteen Ti (III), V (IV) and Cu (II)complexes with halo ligands. Each one of these three metal ions possessed only one unpaired electron. Cryoscopic conditions needed during ESR...
Read MoreAn Efficient Synthesis of Functionalized 3-(α-amidobenzyl)-4-hydroxycoumarin Derivatives by ZnO Nanoparticles Promoted Condensation Reaction Between Aromatic Aldehyde, 4-hydroxycoumarin, and Amides
Introduction Multi-component reactions have been attracting much interest from synthetic chemists because they provide simple one-pot routs for the synthesis of complex molecules from simple and easily available starting materials. These processes are single-step...
Read MoreSynthesis and Properties of Depressators Based on Sopolymers in the Presence of Gossypol Pitch
Introduction At present in Kazakhstan there is no production of depressants for preparation of base oils for transportation and processing. In this connection the development and application of new highly effective reagents is actual....
Read MoreAg/ZnO Nanoparticles as Novel Antibacterial Agent against of Escherichia coli infection, in vitro & in vivo
Introduction Urinary tract infection is the most common nosocomial infection and also is second common infection in the human population so that each year more than 7 million patients visit physicians’ offices in the...
Read MoreThermodynamic study of Cr+3 ions removal by “MnO2/MWCNT” nanocomposite
Introduction Main reason causes environmental problems are toxic metal ions. Chromium is one of the most hazardous heavy metals [1]. It affects on human health, some problems that caused by chromium (III) are as...
Read More13C and 17O NMR of Mono-Nuclear Carbonyls: A DFT Study
Introduction DFT was, earlier, applied by Schreckenbach et al [1-15] to study 13C and 17O NMR spectra of some mononuclear transition metal carbonyls. But the present work would include the study of a number...
Read MoreBases of Technology and Optimal Regime Indicators of Acid Decomposition Process of Phosphorus Sludge
Introduction The full scientifically grounded processing technologies of phosphorus sludge into demanded products, containing phosphorus are still lacking for today. The known technological solutions based on the acid decomposition of phosphorus sludge, in spite...
Read MoreDFT study on the covalent adsorption of drug carvedilol onto COOH functionalized carbon nanotubes
Introduction Nowadays, much attention has been paid to research on new and effective drug delivery systems. The object of the design of these systems is to improve the functioning of these drugs. Although toxicity...
Read MoreSynthesis, Characterization and antimicrobial evaluation of New Chalcone Derivatives From3- benzyloxy-4-methoxybenzaldehyde
Introduction Chalcones are products of condensation of simple or substituted aromatic with simple or substituted acetophenones in presence of alkali. Chalcone constitute an impartment group of natural products and some of them possess a...
Read MoreThe application of differential scanning calorimetry as a mean to determine the oxidative stability of vegetable oils and its comparison with Rancimat
Introduction The oxidation form referred to auto oxidation, which is detectable only in the advance stage of process. The auto oxidation of oils and fats is the main cause of their deterioration and the...
Read MoreThe physico-chemicals analyzes of copolymer Paratone 8900 used as viscosity improvers for SAE 10W-40 mineral oil
Introduction Paratone 8900 is used as automotive for as viscosity improvers for multi-grade oils. The properties chemical and physical of copolymer are: solid, bales, relative density 860-900 kg.m-3, insoluble in water, soluble in alkanes,...
Read MoreTreatment of Dye Textile by the Moleculars Sieves in the Gas Industry
Introduction Many industries generate dye-bearing effluents during their produc-tion processes. Textile industries, in particular, are major consumers of water and release appreciable amounts of dyes in their effluents (Mohantry et al., 2006). The contamination...
Read MoreDeuterium adsorption on Multi Carbon Nano-cone (MNCx, X=2-7) including BN Nano-cone: A model for D2 storage
Introduction Deuterium is one of two stable isotopes of hydrogen. The nucleus of deuterium, called a deuteron, contains one proton and one neutron, whereas the far more common hydrogen isotope, protium, has no neutron in...
Read MoreCorrosion Inhibition of Mild Steel in Hydrochloric Acid Solution by Amino Acid Complexes
Introduction When the metals are exposed to environment their surface begins to destructed or deteriorated by chemical or electrochemical reaction with its environment to attain a stable lower energy state is called corrosion [1]....
Read MoreCombined Electrochemical Method of Synthesis of Lead Tetraacetate From Metallic Lead
Introduction Lead tetraacetate (LTA) is a selective oxidant, and is widely used in organic chemistry in various preparative synthesis1-3. There are scientific works4-5 on the investigation the effect of temperature and pH in adsorption...
Read MoreThe Synergistic Effect of Anionic Surfactant on Adsorption Enhancement of the Carotenoids Extract using Mesoporous Hydroxyapatite Nanoparticles
Introduction Fish waste is the residual by-product mostly generated from the fish processing industry. Almost all the waste is often deposited in an environment causing pollution and health problem. The use of this waste...
Read MoreEffect of temperature on thermal properties of Graphene
Introduction Graphene is a two dimensional crystalline material and discovered in 2004. It has exceptional mechanical properties investigated by the different researchers [1–6] during recent past years. It has been found that electronic structure...
Read MoreHigh Efficient of the Intermolecular Radical Reactions through three-Component Carbo-Oximation Process using new ready available Sulfonyl oxime.
Introduction Free radical multi component reactions (MCR) are more flexible and fulfill for an efficient carbo-functionalization of olefins1. Radical MCRs have thus attracted a considerable attention. More recently, the addition of carbon fragments across...
Read MoreAdsorption of Congo Red by Ni/Al-CO3: Equilibrium, Thermodynamic and Kinetic Studies
Introduction It was estimated that 10-20 % of dye was lost during the dyeing process and released as effluent [1]. Due to their chemical structures, dyes are resistant to fading on exposure to light,...
Read MoreDispersive Liquid-Liquid Microextraction and determination of Platinum(IV) by High Performance Liquid Chromatography
Introduction Platinum is a metal used mainly in jewelry, electrical contacts, dentistry, laboratory equipment and vehicle emission control devices. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity...
Read MoreNMR Shielding Tensors and Thermodynamic Investigation of TWCNTs including BN doping: A model for H2 storage
Introduction Although much study has been done for nanotube carbon phenomenon, there are a few studies for MWCNTs such as TWCNTs [1-10]. The carbon nanotube (CNT) is a representative nano-material. CNT is a cylindrically...
Read MoreCa(II), Zn(II) and Au(III) sulfamethoxazole sulfa-drug complexes: Synthesis, spectroscopic and anticancer evaluation studies
Introduction Metal–organic frameworks were the interesting field in the last two decades, not only for the physical applications in the areas such as catalysis, molecular adsorption, magnetism, nonlinear optics, and molecular sensing, but also...
Read MoreChemical Modification Methods of Nanoparticles of Silicon Carbide Surface
Introduction Nanostructures represent a new class of materials that have at least one dimensionless than 100 nm. Nanostructures can be divided into 4 groups: zero-dimensional (0D), one-dimensional (1D), two-dimensional (2D) and three-dimensional (3D) structures....
Read MoreAntimicrobial and Antioxidant Effects of Some Turkish Fodder Plants Belongs to Fabaceae Family (Vicia villosa, Trifolium ochroleucum and Onobrychis altissima)
Introductıon The flowering plant family Fabaceae (Leguminosae) contains over 18000 species distributed throughout the world in many ecological settings, from deserts of high latitudes to seasonally dry or wet tropical forests of equatorial regions...
Read MoreBeads,Necklaces, Chains and Strings in Capping Carbonyl Clusters
Introduction The Wade-Mingos rules have significantly enhanced the understanding and development of cluster chemistry since 1970s1-2. Wade’s rule related the number of skeletal electron pairs(Sep) in a cluster to the number of skeletal atoms(n)...
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