Search
1357 articles for “Calculations”
-
Synthesis, Characterization and Applications of Poly (2-Methyl Aniline-co-2-Chloro Aniline) and Poly (2-Methyl Aniline-co-2-Chloro Aniline)-Nanocomposite-CuO
Abstract: The copolymer and its composite, poly (2-methyl aniline-co-2-chloro aniline) and poly (2-methyl aniline-co-2-chloro aniline)-nanocomposite-CuO respectively were synthesized by chemical oxidative polymerization method using ammonium persulphate as oxidant, sodium lauryl sulphate as surfactant and HCl as dopant. The synthesized copolymer and composite were characterized by FTIR, UV-Visible and 1H NMR spectroscopy. The thermal stability was determined by TGA/DTA. The copolymer and copolymer nanocomposite with CuO were found to be thermally more …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 7, Issue 3, 2016 · pp. 35–45 Read article
-
Optical Absorption and Electronic Properties of 4-Aminoantipyrine Schiff’s Bases: A Combined Experimental and DFT Study
Abstract: The Schiff base compounds (A1–A9) have been synthesized and characterized by elemental analysis, FT-IR, UV-Vis, mass spectrometry, 1H-NMR and 13C-NMR. Electronic absorption spectra of A1–A9 are studied in various solvents with different polarity like hexane, chloroform, methanol and dimethyl sulfoxide. To support and better understanding of experimental results, density functional theory (DFT), time dependent density functional theory (TDDFT) calculations has been carried out for these molecules and are in good …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 8, Issue 1, 2017 · pp. 1–13 Read article
-
Evaluation of Anti-ulcer Activity of Ethanolic Extract of Salacia fruticosa and Oldenlandia Umbellata
Abstract: In this present study the aerial and root parts of Salacia fruticosa and the entire herb of Oldenlandia umbellate were evaluated for its anti-ulcer property in Aspirin induced ulcer model and Pylorus ligation assays. Both plant materials were extracted with ethanol and given at the dose level of 200mg/kg orally after the LD50 studies to fix the dose. Ulcer index, free acidity and total acidity in pylorus ligated and aspirin …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 4, Issue 2, 2013 · pp. 1–5 Read article
-
“Alzheimer†An Ambiguous Ailment; A Comprehensive Review
Abstract: Alzheimer Disease (AD) is a gradually progressive dementia affecting cognition, behavior, and functional status. It was discovered a century back (1907) characterized by defects in language use, visual-spatial perception, ability to learn, solve problems, perform mathematical calculations, thinking abstractly, and making appropriate judgments, affecting more than 4.5 million people in United States. 100,000 people die of AD every year, nevertheless hundred years have been passed after the discovery of AD …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 5, Issue 3, 2014 · pp. 8–16 Read article
-
Pylorus Ligation Induced Gastric Ulcer Protection by Sesamum Indicum Ethanolic Seed Extract
Abstract: The present study was performed in pylorus ligation induced ulcer model in Wister rats, in which ability to provide gastric protection was studied at two different doses 200 and 400 mg/kg calculated based on the acute toxicity study. Gastric protection was evaluated by assessing various parameters like gastric volume, pH, total acidity, free acidity, ulcer index and percentage inhibition of ulceration. Ranitidine at 50 mg/kg was used as the standard …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 6, Issue 3, 2015 · pp. 42–49 Read article
-
Titrimetric and Spectrophotometric Assay of Diethylcarbamazine Citrate in Pharmaceuticals using Permanganate as Oxidant
Abstract: Two titrimetric and one spectrophotometric methods are described for the determination of diethylcarbamazine citrate in bulk drug and dosage forms using permanganate as an oxidimetric agent. In method A, the drug solution in H2SO4 is titrated directly at 800C to a pink end point. DEC was treated with a measured excess of standard permanganate in H2SO4 medium, and after a contact time of 5 min, the residual oxidant back titrated …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 7, Issue 3, 2016 · pp. 1–11 Read article
-
High-Performance Liquid Chromatographic Assay of Nateglinide and its Stability Study
Abstract: Nateglinide (NTG) is a D-phenylalanine derivative used in the treatment of type-2 diabetes mellitus. An accurate, sensitive and reproducible high-performance liquid chromatographic (HPLC) method has been developed and validated for the quantification of NTG in pharmaceutical samples. The drug was eluted from Inertsil ODS 3V (150×4.6 mm; 5 µm particle size) column at 30á´¼C with a mobile phase consisting of phosphate buffer of pH 3.3 and methanol (70:30 v/v). The …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 7, Issue 3, 2016 · pp. 41–52 Read article
-
Quantitative Structure Activity Relationship Studies of Some New 4-Thiazolidinone Derivatives as Antimicrobial Agents
Abstract: In the present study, quantitative structure activity relationship (QSAR) studies have beenperformed on series of 24 compounds of 4-thiazolidinone derivatives with antimicrobialactivity using Chemoffice version 8.0 software. The QSAR models have been developed byusing multiple linear regressions in order to identify descriptors, which are actually focusingtowards the biological activity. Leave one out (LOO) method was employed in crossvalidation analysis to validate the developed model. The best predictive QSAR model derived,had …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 8, Issue 2, 2017 · pp. 1–3 Read article
-
Two New, Useful and Facile Stability-Indicating UV Spectrophotometric Methods for the Determination of Rosiglitazone in Pharmaceuticals
Abstract: Rosiglitazone (ROS) is an antidiabetic drug belonging to the thiozolidine class. Two simple, rapid, sensitive, accurate and reproducible UV-spectrophotometric methods were developed and subsequently validated for the determination of ROS in bulk and tablet form. The methods are based on the measurement of the absorbance of the drug solution either in 0.1 M NaOH (NaOH method) or in 0.1 M HCl (HCl method) at 316 nm in both instances. The …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 8, Issue 2, 2017 · pp. 8–19 Read article
-
Life Cycle Cost Optimization of Various Building Envelope Configurations with Thermal Load of an Energy Efficient Building Situated in Composite Climate of India
Abstract: Normal 0 false false false EN-US X-NONE X-NONE Energy efficiency in buildings has become a thrust area due to energy and environment-related issues. In this paper, an energy efficient building situated at Delhi, India has been analyzed for the life cycle cost, which includes the cost of material, air-conditioning machine, and operational cost for various configurations of fire clay bricks and ash blocks building envelope. It was found that use …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 2, Issue 2, 2011 · pp. 17–29 Read article
-
Environmental Value Engineering Analysis on Performance Optimization of an Oil Fired Crucible Furnace using Oscillatory Combustion Technology
Abstract: Environmental Value Engineering Concept (E.V.E.) is a proven disciplined approach for improving measurable efficiency parameters for any organization or a system. In this paper, Overall Equipment Effectiveness (O.E.E.) for oil fired crucible furnace, which is a metric for Total Productive Maintenance initiative, has been calculated. As this performance was below the expectation level and resulting into outsourcing of jobs at higher cost, the E.V.E analysis was taken under consideration for …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 3, Issue 2, 2012 · pp. 11–18 Read article
-
Hydrogen as an Alternative Fuel for Internal Combustion Engines
Abstract: This paper critically reviews articles on hydrogen as an alternative fuel in an internal combustion engines (ICE). Emphasis is given to the properties of hydrogen fuel with respect to engine performance while developing explicit comparison with a typical gasoline fuel (iso-octane). Calculations were made which demonstrated lower volumetric efficiency of a –ICE as result of its 30% relative occupancy in the combustion chamber. Detailed combustion chemistry and consequent dependence of …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 5, Issue 2, 2014 · pp. 50–57 Read article
-
Effect of Slope on Estimating Tree Biomass using Satellite Data in Belasitsa Mountain Forest, Bulgaria
Abstract: 800x600 Remote sensing of above ground tree biomass (AGTB) in rugged and mountainous forest sites incurs uncertainties in accuracy due to the influences of various bio-physical and topographic factors. Particularly slope is an important factor affecting the accuracy of remote sensing AGTB. This study investigates how slope affects the estimation of above ground tree biomass using vegetation indices (VIs) calculated from an ASTER image in the Belasitsa Mountain forest in …
Published in Journal of Remote Sensing & GIS · Vol. 5, Issue 3, 2014 · pp. 17–30 Read article
-
Passive Microwave Remote Sensing of Flood: A Comparison of Various Methods
Abstract: Microwave Remote Sensing is used to detect different land cover types such as, bare soil, water bodies, vegetation cover, forest cover etc., and using different procedures. In this paper, we have targeted on a methodology to detect difference between land and water by using brightness temperature at different frequencies during the flooding period. Disastrous flood occurred in Kashmir (India) during 2014, and passive microwave remote sensing data are utilized for …
Published in Journal of Remote Sensing & GIS · Vol. 6, Issue 1, 2015 · pp. 17–23 Read article
-
Proposed Algorithm for Shadow Identification and Classification in VHR Satellite Imagery
Abstract: The Very High Resolution (VHR) satellite imagery offers great possibilities for urban environments. Unfortunately, shadows cast by buildings in high-density urban environments obscure much of the information in the image, leading to potentially corrupted classification results or blunders in interpretation. The objective of this paper is to propose an algorithm for better identification and classification of shadows in VHR images. Two prime stages were carried out i.e. shadow identification and …
Published in Journal of Remote Sensing & GIS · Vol. 6, Issue 3, 2015 · pp. 33–44 Read article
-
Extraction of Drainage Pattern and Watershed from SRTM Data Using GIS Tools: A Case Study
Abstract: This paper proposes a fast and an inexpensive method for delineating the drainage and watershed of a sub-basin. Planning of the water resource management is evolving from simple local-scale problems toward complex spatially explicit regional scale. Such problems have to be addressed with distributed models that can compute runoff and erosion at different spatial and temporal scales. In general, watershed can range from as little as one hectare to hundreds …
Published in Journal of Remote Sensing & GIS · Vol. 7, Issue 1, 2016 · pp. 1–9 Read article
-
Prioritization of Micro/Mini Watersheds and Identification of Locations to Construct Rainwater Harvesting Structures using Morphometric Parameters and Geoinformatics
Abstract: Nalluru Amani Kere Watershed (NAKW) is constituent of Caveri river basin, Karnataka state, covering 415.68 km2 area, representing arid climate. The NAKW has been divided into thirty one micro/mini watersheds (MWS) of 3rd order, designated as MWS-1 to MWS-31, for the purpose of prioritization. For this purpose, morphometric parameters were calculated under linear and shape aspects. Linear aspects such as; drainage density (Dd), bifurcation ratio (Rb), stream frequency (Fu), length …
Published in Journal of Remote Sensing & GIS · Vol. 7, Issue 2, 2016 · pp. 1–15 Read article
-
Effect of Exponential Temperature Variation on Vibration of Orthotropic Rectangular Plate whose Thickness varies Parabolically in Both Directions
Abstract: A simple model presented here is to study the exponentially thermal effect on vibration of orthotropic rectangular plate having bi-direction parabolically varying thickness having clamped boundary conditions on all the four edges. Rayleigh Ritz method is used to evaluate the frequency parameter. The two-dimensional thickness variation is taken as the Cartesian product of parabolic variations along the two concurrent edges of the plate. Yet the method used for the solution …
Published in Journal of Experimental & Applied Mechanics · Vol. 4, Issue 2, 2013 · pp. 1–8 Read article
-
Modeling for Transmission Loss Prediction of Different Shapes of Acoustic Muffler with an Experimental Analysis
Abstract: Muffler’s noise reduction is generally calculated by transmission loss and insertion loss. Single expansion chamber is generally used as silencing elements in intake and exhaust systems. The main aim of this paper is to study use of FEA (Finite element analysis) as well as experimental methods for various shapes of Mufflers with constant volume for transmission loss measurement. Various shapes are available for muffler like cylindrical, elliptical cylindrical, box with …
Published in Journal of Experimental & Applied Mechanics · Vol. 6, Issue 1, 2015 · pp. 57–61 Read article
-
Finite Element Analysis of Thick Beams using Lagrange-9 Element and ADINA
Abstract: There has been a lot of research in the field of thick beam analysis. The classical beam theory was the first beam theory but it neglected the effects of shear deformation and this induce the need for further research to develop the beam theory to be helpful in thick beams where the shear deformation is paramount. In this research work, the trigonometric shear deformation theory for thick beam, which includes …
Published in Journal of Experimental & Applied Mechanics · Vol. 7, Issue 3, 2016 · pp. 50–57 Read article