About: chem-xpert

Reduction of Peroxide Number in Crude Palm Oil (CPO) Using Rubber Fruit Shell (Heveabra silliensis) as Bio-sorbent

Introduction Rubber plantation is one of a plantation which is well developing in agriculture in Indonesia. Physically the shell of rubber fruit (Hevea brasiliensis) is known as a plant with lignin contained. According are...

Hydration of Strontium-doped Monocalcium Aluminate

Introduction Calcium aluminate cements (CAC) have alumina contents varying from about 38% to 90% w/w, in the form of monocalcium aluminate (CaAl2O4 or CA). Second phases include belite, corundum, dodecacalcium hepta-aluminate, ferrite pleocroite, gehlenite,...

Synthesis, Spectral Characterization and Antimicrobial Activity of Some Transition Metal Complexes with new Schiff Base Ligand (BDABI)

Introduction Isatin represents synthetically 1H-indole-2,3-dione and it is a flexible lead molecule for latent bioactive agents1. The chemical versatility of isatin motivated the widespread use of this compound in biological synthesis2. Isatin nucleus having...

Zinc-Alginate Beads for the Controlled Release of Rifampici

Introduction Tuberculosis(TB) is a chronic pulmonary diseasecaused by mycobacterium tuberculosis. Rifampicin (RIF) is one of the effective first line drug for TB and isthe semi synthetic hydrazine derivative of rifampicin B.Major limitations of conventional...

Synthesis of Mesoporous Fe2O3/SBA-15 and its Application for Nickel (II) Ion Adsorption

Introduction Nickel is one of the toxic metals cause water contamination. The source of nickel pollution is industrial processes such as electroplating, galvanization, plastics manufacturing, metal finishing, batteries manufacturing, mining, and dyeing operations [1,2]....

Synthesis, Identification and Biological Activity of Some New Chalcone derivatives from 8-Chlorotheophylline

Introduction Xanthine a purine base produces in most human body tissues and fluids and in other organisms it is produced by purine metabolism. [1] The commonly used methyl xanthine theophylline, caffeine and theobromine are...

Bio-Synthesis of Gold Nanoparticles Through Bioreduction using the Aqueous Extract of Muntingia Calabura L. LEAF

Introduction In recent years, precious metal nanoparticles have attracted many researchers because of their potential applications in the fields of optics, electronics, biological sensors, and catalysts. Precious metal nanoparticles that are often used in...

Synthesis and Characterization of Aurantiol Schiff Base: Relationship Between Synthesis time and some Physical Properties

Introduction Fragrance is a mixture of several compounds that each compound works in accordance with its properties to produce aromatic compounds.1-3  Important properties of fragrance include volatility, polarity, and stability. Volatility is a key...

Retarding of Preliminary Chemical Pollutants from Dye Effluent by Metal Nano Particles Synthesized using Flower Extract of Catharanthus Roseus

Introduction Now a day we know numerous management approaches to remove contaminants from dye industry and tannery sewage. This removal process can be carried out by Physical, chemical, and biological processes [1].In the chemical...

Synthesis and Characterization of some new β-Lactam Derivatives from Azo Sulphadiazine and its Biological Evaluation as Anticancer

Introduction Sulfadiazine is a sulfonamide antibiotic and it is recognized as one of” the World Health Organization’s List of Essential Medicines”, itremoves  bacteria that cause infections by stopping the production of folic acid into...

Catalytic Conversion of CO2/H2 Into Alcohol using Modified Lampung – Zeolite as Catalyst

Introduction In respond to fossil fuels depletion and concern on environmental impacts, primarily due to CO2 produced from their utilization, conversion of CO2 into various chemicals useful as alternative and renewable fuel has been...

Virtual Screening of Treated Pistachio Vera Shell Powder as A Potential Sorbent in Sequestering Ubiquitous Divalent Metal Ions from Aqueous Matrices

Introduction Contamination of heavy metals into aquatic bodies by various pollutants, causes deterioration in ecosystem1. They also accumulate in food chain by affecting human beings2. The principle sources of heavy metals include: tanneries, electroplating,...

Fabrication of Sugar Palm Fiber/Andisol Soil Composites for Iron(III) ion Removal in Aqueous Solution

Introduction Heavy metal ions contained in industrial wastewater is increasing great attention among researchers and governments since their toxic nature and harmful for biotic creatures as well as for human sustainability. It is generated...

Optimization of Struvite Crystallization and Heavy Metal Recovery in Wastewater using Response Surface Methodology

Introduction MAP (Magnesium Ammonium Phosphate) precipitation could occur spontaneously on the surface of process pipes, pumps and other industrial equipment leading to scale deposition of struvite (MgNH4PO4·6H2O) minerals1,2. The scale deposition of MAP bearing...

Green Synthesis and Charcterization of Silver Nanoparticles from Leafs Extracts of Rosa indica and its Antibacterial Activity Against Human Pathogen Bacteria

Introduction Nowdays, we are witnessing the development and advancement  of a new interdisciplinary scientific field nanoscience.1As was shown by numerous example in physics, chemisty and biology, a transition from macrosizes to those of 1-100...

Inhibition Effect of 2,2’-Bipyridyl on the Corrosion of Austenitic Stainless Steel in 0.5M H2SO4

Introduction Austenitic stainless steels are widely used as building materials in the following fields: medical, automotive, food1, steam power stations2, piping systems, chemical factories and heat exchanger equipment3. Their resistance to corrosion is due...

Effect of Nitrogen Plasma Treatment and Direct Dye on Zeta Potential of Cotton Fabric

Introduction Plasma is a mixture of photons, electrons, positive and negative ions, free radicals and excited molecules. In general, all of these species have interact with the surface of textiles. Plasma treatment can change...

Synthesis and Cytotoxic Activities of Hexyl Esters Derivatives of Gallic Acid Against MCF-7 Cell line

Introduction Breast cancer is the second most common cancer in the world and the most frequent cancer among women with an estimated 1.67 million new cancer cases diagnosed in 2012 (25% of all cancers)....

Synthesis and Study of Modified Polyvinyl Alcohol Containing Amino acid moieties as Anticancer Agent

Introduction Cyclic imides and their derivatives brought much attention to chemist and pharmacist in the field of research and development(1), These compounds play an important role in medicinal chemistry in drug development and drug...

Determination of the Hazard Class of Ash After Coal Combustion by the Method of Biotesting

Introduction Hazard class of ash and slag wastes is important in terms of environmental protection and health of inhabitants residing in vicinity of power plants. Ash dumps exert negative impact on environment due to...

Measurement and Thermodynamic Modelling of Erythritol Solubility in Aqueous Solvents

Introduction Erythritol, with its chemical name 1, 2, 3, 4-butanetetrol or meso-erythritol [C4H10O4], is classified as a sugar alcohol with white crystal appearance. The molecular structure of erythritol is shown in Fig. 1. It...

Synthesis and Investigation of Polyimide-Based Proton-Exchange Membranes Containing Polysiloxane and Crown Ether Moiety

Introduction Fuel cells (FC) are devices that generate electricity through chemical reaction of fuel with oxygen and attracts increasing attention of alternative energy researches as they do not produce any harmful emissions to the...

Inhibition Studies of the Synergistic Effect of Rosemary oil and Zinc Oxide on S41003 Ferritic Steel Corrosion in Dilute Sulphuric and Hydrochloric Acid Solutions

Introduction Stainless steels have a wide variety of industrial applications. They are corrosion resistant in specific environments due to the formation of a thin protective film on their surface. Deterioration of these films results...

The Effect of Poly vinyl chloride-co-vinyl acetate Crosslinking Agent on Mechanical Properties of Acrylic Primer for Concrete Substrate Application

Introduction The acrylic resin Poly (methyl methacrylate) (PMMA) is used almost universally for surface coatings, adhesives, concrete, aircraft windows and thick polymer sheets1-4. PMMA has been continuously developed and gained an important role in...

Chemical Composition of Hydrodistillation and Solvent free Microwave Extraction of Essential Oils from Mentha Piperita L. Growing in Taif, Kingdom of Saudi Arabia, and Their Anticancer and Antimicrobial Activity

Introduction The medicinal plants continue to be one of the richest bio-resources which are used in traditional and modern medicines. Variety of widely used pharmaceutical preparations contains essential oils, crude extracts, or pure compounds...

Unipolar Charging of Aerosol Particles in the Size Range 75-500 nm by Needle-plate Corona Charger

Introduction Particle charging is one of the most important processes in aerosol science and technology. Nowadays particle charging is successfully used for the particle size measurements1, formation of functional structures2, synthesis of nanoparticles3, electrostatic...

Electrochemical Removal of Hydrocortisone from Aqueous Environments using Aluminum Electrodes

Introduction Hydrocortisone (See Figure 1)1 is a steroid hormone produced by the adrenal cortex2. Its synthetic counterpart is used as a medication for treating asthma, inflammation, allergy, multiple sclerosis, and skin conditions3,4.   Figure...

Conductimetric Properties of Benzoic Acid in Water and 1-Propanol Mixtures at the Temperatures from 298.15 to 313.15K

Introduction The binary solvent systems are important for many practical applications, such as, in HPLC analysis,1 in MALDI-TOF analysis,2in the study of several physicochemical properties of electrolyte solutions.3It has attracted the researchers to study...

Simple and Selective Naked-Eye and visual Detection of Cu2+ and Al3+ Ions using Hibiscus Rosa-Sinensis Linn flower Extract

Introduction Copper ion (Cu2+) plays important roles in various biological systems and the environment. It is well known that copper is an essential trace element for humans and other animals. However, its high concentration...

New Route to Synthesize of Graphene Nano Sheets

Introduction Graphene is a two-dimensional carbon with one layer. Graphene possesses superior properties including unique electronic properties due to its high electron mobility (20 × 103 cm2 v-1 s-1),1 mechanical resistance.2 Super-thermal properties (~...

Synthesis, Characterization and Cytotoxic Activity of new Indole Schiff Bases Derived from 2-(5-Chloro-3,3-Dimethyl-1,3-Dihydro-Indol-2-Ylidene)-Malonaldehyde with Aniline Substituted

Introduction Schiff bases are important compounds in the chemistry and biochemistry fields due to their biological activities [1]. Schiff bases which are a class of compounds containing an azomethine group (-C=N-) as functional group...

Production of Biogas from Palm Oil Mill Effluent at Pilot Scale: Effect of Recycle Sludge

Introduction Crude palm oil (CPO) is one of major products in Indonesia. In 2012 Indonesia produced approximately 23.5 million tons of CPO [1]. It makes Indonesia as the largest CPO producer in the world....

Eco-Friendly Access to β -Ketoamides: one-step Catalyst – and solvent-free Amidation of β -Ketoesters under Microwave Irradiation

Introduction Catalyst-free methodologies for synthesis of organic compounds are of great interest for the development of a sustainable chemistry. In addition to the simplicity of the procedure and the reduced cost, this also makes...

Crystal Structure and Third Order Nonlinear Optical Studies on 2-Phenylbenzimidazolium-p-Toulenesulphonate

Introduction A fascinating new field of research termed “nonlinear” optics was introduced to the scientific and engineering community after the invention of laser. Nonlinear optics has arisen as one of the most attractive fields...

Study of the Al, Cr, Fe and TI Impurities Coprecipitation on Coprecipitants of Various Natures in Potassium Dihydrogen Phosphate Solutions

Introduction Finding advanced method of producing high-purity potassium dihydrogen phosphate (KDP) – a raw material for rapid single crystal growth, constitutes a pressing objective due to the global implementation of projects relevant to developing...

Synthesis and Characterization of Block Copolymers of Polystyrene and Thermotropic Liquid Crystalline Polyesters

Introduction In recent years, the polymers has attracted increasing interest their have a microphase separations systems. Microphase separations of polymer is good material forsolar cells. [1-13]. Such polymers included block or graft copolymers comprised...

Biosorption of Methylene Blue from Aqueous Solution by Coconut (Cocos Nucifera) Shell-Derived Activated Carbon-Chitosan Composite

Introduction Anthropogenic activities and rapid industrialization have contributed to the worsening of environmental conditions by generating huge quantities of pollutants that are most often than not discharged into the nearest water sources. Among these...

Optical Pattern of Liquid Crystalline Structure in Singular and Mixed Anionic-Cationic Surfactant System

Introduction When a surfactant adsorbs from aqueous phase at a hydrophobic surface, the molecule’s hydrophobic group causes the molecule to concentrate at the surface with the orientation where the hydrophobic group towards the surface...

Comparative Evaluation of Trace Heavy Metal Ions in Water Sample using Complexes of Dithioligands by Flame Atomic Absorption Spectrometry

Introduction Dithiocarbamate functional group is a versatile ligating moiety and readily interacts with a verity of metal ions to form complexes with varying nuclearities1. They have wide range of application in medicinal chemistry, industrial...

In Vitro Antacid Screening of the Aqueous and Ethanolic Leaf Extracts of Triticum Aestivum (Linn.) and Hordeum Vulgare (Linn.)

Introduction Peptic ulcer is one of the occupational diseases of employees in non-agricultural establishments in the Philippines, with 5, 347 cases in 2003 and 4, 135 cases in 20071. Due to the high prevalence...

The Synthesis of 2,3-Dihydroquinazolin-4(1H)-Ones using Zinc Oxide Nanotubes Modified by Sio2 as A Catalyst with Recyclable Effect

Introduction Heterogenization of homogeneous catalysts has been a fantastic area of research from the industrial point of view.  This approach, relieves the ability to use simultaneously the benefits of homogeneous catalysts (high activity and...

The Sorption Capacity of Polymer Sorbents on the Basis of Polyimides with Crown Ethers

Introduction The presence of metal ions in various wastes, including the wastewater which are by-product of industrial activities, is topical environmental problem. Unlike organic pollutants, heavy metal ions are not biodegradable and tend to...

Development and Validation of Stability-Indicating Ultra High-Performance Liquid Chromatography for Ramipril Analysis in Pharmaceutical Dosage Forms and its Application in Lipid-based Formulations

Introduction Ramipril (RMP) is (Fig1) chemically named as 2-[N-[(S)-1-ethoxycarbonyl-3-phenylpropyl] – L – alanyl] – (1S, 3S, 5S) – 2 – azabicyclo[3,3,0]-octane-3-carboxylic acid [1]. It is classified as angiotensin converting enzyme inhibitor (ACE) [2, 3]....

Using Thermolytic Solution of Anionic-decorated Graphene Quantum Dots (GQDs) as Fluorescence Turn on-off Sensor for Selective Screening Test of Metal Ions

Introduction It is well known that graphene has found widespread applications in many diverse fields in physics, chemistry, material science, and biology. It has been shown that when a graphene sheet is small enough,...

Synthesis, Spectral and Biological Studies of Complexes with Bidentate Azodye Ligand Derived from Resorcinol and 1-Amino-2-Naphthol-4-Sulphonic Acid

Introduction In the last few years, a lot of interest have been taken by chemists in the synthesis and physicochemical studies of first row transition metal complexes with a number of azo dye ligands...

Allylxanthone Derivatives as Xanthine Oxidase Inhibitors: Synthesis, Biological Evaluation and Molecular Docking Study

Introduction Xanthine oxidase (XO) is a vital enzyme that catalyzes the oxidation of hypoxanthine to xanthine and the oxidation of xanthine to uric acid in the purine pathway and plays a significant role in...

Synthesis of a Novel Calix[4]resorcinarene-Chitosan Hybrid

Introduction Calixarene has attracted the attention of scientists since it was first introduced in 19781 because it can be utilized in various fields. Calixarene has been studied its use for various purposes, including: sunscreen,2...

Synthesis and Investigation of Electrical Properties of Carbon Nanotube – Porous Matrix Composites near the Percolation Threshold

Introduction Carbon nanotubes (CNTs) have been intensively investigated due to their combination of outstanding mechanical and electrical characteristics, extremely large interfacial contact area, high aspect ratio, and low mass density. CNTs are considered as...

Utilization of Heavy Metal Complexes As Phosphorogenic Sensors for the Detection of Amino Acids, (A Review)

Introduction Amino acids that are bioactive molecules play pivotal roles in maintaining various biological pathways in cellular functions. Especially, biothiols such as cysteine (Cys) homocysteine (Hcy) and reduced glutathione (GSH) are responsible for the...

Preliminary Phytochemical and Pharmacological Studies on Glycosidal Fraction of Acacia Farnesiana (Gandh Babul)

Critical Limit of Plasmon Excitations in Metals

Chemotaxonomical Characteristics of Genus, ‘Ochna’ Based on Biflavanoids

Spectrophotometric Determination of Copper and Cobalt Through Adsorption of Their Oximate Complexes on Microcrystalline Naphthalene

A New Route of Syntheisis and Insecticidal Activity of -2h-1,4- Benzoxazin -3-Ones

Toxicity of Some N-Substituted Carbazoles Along With Compounds Containing Methylene-Dioxyphenyl Ring on Mosquito Larvae

Laser Raman Spectrum and Normal Coordinate Treatment of Acetophenone

Infra-Red Absorption Characteristics of 3-Hydroxy -3-Isopropyl-1-Phenyltriazene Derivatives

Oxocation Complexes of Carbazic Acids

Acetanilide Sulphonyl Hydrazides and Hydrazones of Biological Activity

p-Chlorosulphonate-O-Toluic Acid Azide and its Urea and Urethan Derivatives

Solvent Effects on the Charge-Transfer Complex of 2, 3,5, 6 – Tetrachloro-7-Nltro-1, 4-Naphthoquinone-2, 6-Dimethyl Aniline

Effect of Some Complexing and Reducing Agents on the Electrodeposited Ni2O3 Electrode

High Performance Liquid Chromatographic Methods for Determination of Fat Soluble Vitamins in Foods

Effect af Nuclear Reactor Radiation on the Physicochemical Composition of A Lubricating Base Oil

Preliminary Qualitative Organic Analysis of Zornia Gibbosa Span

Hydroxytriazenes in Spectrophotometric Determination of Uranyl Ion

Synthesis and Characterisation of Iron and Cobalt Complexes of 1-Butyl-3-(P. Tolyl Sulphonyl)-Urea, an Oral Antidiabetic Agen

The Anticholinesterase Activity of Dichlorovos (DDVP) in the Isolated Melanophores of Channa Punctatus

Oxouranium (VI), Hydroxozirconium (IV) and Oxovanadium Complexes of Ligands Derived from Acid Hydrazides and Acetylacetone

Anaerobic Digestion of Cellulose Waste Materials

Magneto, Spectral and Thermal Behaviour of Rare Earth Bromide Chelates of N, N, N1, N1-Tetramethyl Thiuram Disulphide|

Theoretical Description of Infrared and Laser Raman Spectra of the Metal-Hehabromo Species

Spectrophotometry Determination of Ruthenium (III) With 2-Amino-3-Hydroxypyridine in Presence of Quinoline

Cathodic Deposition of Lanthanum

Studies on Amoebicidal Agents: Synthesis and Amoebicidal Activity of Toluene -2: 4-Bis-Sulfonylhydrazones

Polarography of Pyridine-4-Aldoxime in Aqueous Non Aqueous Solvent Mixtures

Synthesis and Characterisation of Tolbutamide Complexes With Mg (II), Ba (II), Mn (II), and Co (II)

Polarographic Determination of Ruthenium (III) With 2 – Amino – 3-Hydroxypyridine

Spectrophotometric Studies on Thorium Complex of 3-Nitro-∝-Methyl Dibenzoylmethane

Effect of X-Irradiation on Some Enzymes of Carbohydrate I Metabolism in Philosamia Ricini (Eri Silk Worm) Pupae

Synthesis and Structural Studies of Some Complexes of Nickel (II) With Schiff Bases

Spectrophotometric Quantitation of the Lipoxygenase Derived Conjugated 1,3-Diene (12-Hete) in Biological Systems

Alkaline Permanganate as A Reagent for the Determination of Cobalt

Study of the Natural Products from the Stem of Zornia Gibbosa Span

Stereochemistry of Some N- [2-Methyl-1-(1-Naphthyl) Propylidene] Arylamines

Kinetics of Ru(III) Catalysed Oxidation of Benzyl Alcohol By Bromamine-T in Perchloric Acid

Pyrolysis and Mass Spectra of 1-Aroyl-2-Phenylsulphonyl-Hydrazines and N-Arylsulphonylarylhydrazidoyl Chlorides

Synthesis of Some Derivatives of 6-Chloro-4-(Hydrazido)- 3,4-Dihydro- [ 1,4 ] -Benzoxazin-3 (2H) -One

Disulphonamides Derived from Cresols of Insecticidal and G Bactericidal Activity

Force Field Study of Phosgene Molecule