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1227 articles for “Phases”
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Assessment of Indoor Air Pollutants with Special Reference to Particulate Phase Polyaromatic Hydrocarbon in Rural Villages
Abstract: Emissions from household stoves using traditional biomass fuels such as firewood, crop residue and animal dung could have a continuing contribution to air pollution and also have adverse health impacts due to emission of different toxic pollutants. The present study was carried out in 13 household kitchens in Thavarghatta located in Shimoga district to know the level of the total suspended particulate matter (TSPM) and particulate phase polyaromatic hydrocarbons (PAHs) …
Published in Research and Reviews: A Journal of Toxicology · Vol. 2, Issue 2, 2012 · pp. 38–45 Read article
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Induction of G1 Phase Cell Cycle Arrest and Apoptosis in Breast Cancer MCF-7 Cells by Sulphonamide Derivative CID-6861424
Abstract: Breast cancer is most frequently detected and leading cause of cancer death in women worldwide. 80% of the breast cancer are estrogen receptor positive and the presently available drugs are ineffective either due to intrinsic resistance or due to acquired resistance. Sulfonamide compounds are a class of compounds showing activities like, antibacterial, antiviral including antitumor. In the present study we have investigated the anti-cancerous activity of sulfonamide derivative CID-6861424 on …
Published in Research and Reviews: A Journal of Toxicology · Vol. 9, Issue 2, 2019 · pp. 1–17 Read article
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A Preliminary Computational Study of the Mechanism of Oxidation of D-Fructose by Iodine in Gas Phase
Abstract: This paper presents a preliminary computational study of the mechanism of oxidation of D-fructose by iodine in the gas phase. The study shows that the oxidation reactions proceeded in three consecutive elementary steps, in which three transition states were produced. The reactions also produced two intermediates. Heats of formation and other thermodynamic parameters of all species involved were also calculated and presented. The results obtained were based on the analyses …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 6, Issue 2, 2015 · pp. 41–49 Read article
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Influence of Micronutrients, Rhizobium, and Trichoderma on Split Hypocotyl of French Bean (Phaseolus vulgaris (L.) cv. Arka Suvidha)
Abstract: Normal 0 false false false EN-US X-NONE X-NONE The current field experiment was carried out at UAS, GKVK, Bangalore to study the effect of micronutrients on nodulation, seed yield, and quality of French bean (Phaseolus vulgaris (L.) cv. Arka suvidha). The experiment consisted of 15 treatment combinations of Boron, Zinc, Molybdenum, Trichoderma viridae, and Rhizobium phaseoli. T1: Control, T2: Boron (20 kg/ha), T3: Zinc (15 kg/ha), T4: Molybdenum (2 kg/ha), …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 1, Issue 3, 2011 · pp. 20–23 Read article
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Design and Implementation of Single-Phase, Three-Level, Sub-Harmonic PWM Inverter with Short-Circuit Fault Detection
Abstract: This paper investigates the design and implementation of single-phase, three-level inverter controlled by sub-harmonic pulse-width modulation (SH-PWM). The performance of developed 3-level inverter is simulated and then is compared with 2-level conventional inverter as well as FFT analysis. Experimental test has been undertaken to examine the operating characteristics of the implemented inverter for supplying an inductive load. To increase the reliability of designed inverter in different applications, a short-circuit fault …
Published in Journal of Instrumentation Technology & Innovations · Vol. 5, Issue 2, 2015 · pp. 5–13 Read article
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Optimization of Mobile Phase and Stability—Indicating HPTLC Method for the Determination of Prasugrel Hydrochloride in Pharmaceutical Dosage Form
Abstract: A simple and sensitive high-performance thin layer chromatographic method was developed and validated for Prasugrel hydrochloride. It was spotted on silica gel 60F254 TLC plates, developed using toluene:methanol (9.9:0.1, v/v) as mobile phase and scanned at 258 nm using a Camag TLC Scanner IV. The Rf value of Prasugrel hydrochloride were found to be 0.53±0.03. It was found to be linear in the concentration range of 300–1500 ng/band. The limit …
Published in Research & Reviews: A Journal of Drug Formulation, Development and Production · Vol. 5, Issue 2, 2018 · pp. 7–12 Read article
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Phase Behaviour Study of a Mesogen in a Solvent Role of Molecular Rigidity and Configurational Entropy
Abstract: The phase behaviour of a nematogen 4’-n-pentyloxy-4-biphenylcarbonitrile (POBPCB) has been studied with respect to the translational and orientational motions. The charges of atoms and their dipole moments have been estimated by implementing the complete neglect differential overlap (CNDO/2) method. The long-range interactions have been analyzed using modified Rayleigh- Schrodinger Perturbation theory together with the multicentred-multipole expansion scheme. The “6- exp” potential function has been considered to study the short-range interactions. …
Published in Research & Reviews : Journal of Physics · Vol. 9, Issue 4, 2020 Read article
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Analysis of Thermo-Mechanical Properties in Cement Mortar Using Synthesized Silicate Microencapsulation of Phase Change Materials by Sol-Gel Process
Abstract: This investigation delves into improving building thermal comfort using microencapsulated phase change materials (PCM@SiO2) in cement mortar. The encapsulation process, achieved via a sol-gel method, envelops PCM in a silicate shell Differential Scanning Calorimetry (DSC) and Fourier-Transform Infrared Spectroscopy (FTIR) were used to confirm the thermal properties and integrity of encapsulated PCM, which showed an encapsulation efficiency of 92.7% and a thermal storage capacity of 99.7%. The study involved the …
Published in Journal of Polymer & Composites · Vol. 12, Issue 1, 2024 · pp. 152–160 Read article
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Advances in Speed Control Techniques for Three-phase Induction Motors
Abstract: Induction motors are pivotal in modern industrial applications due to their efficiency and adaptability. Electric motors that run on alternating current (AC) and are driven by a rotating magnetic field are called induction motors. They consist of coils that use electromagnetic induction to transform electrical energy into mechanical energy, a rotor, and a stator. AC induction motors are incredibly adaptable, efficient, and have a comparatively straightforward construction. This paper provides …
Published in Journal of Control & Instrumentation · Vol. 15, Issue 3, 2024 · pp. 1–8 Read article
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Optimization of Symmetric Linear Phase Low Pass FIR Filter Using Genetic Algorithm
Abstract: In the proposed paper, optimization of symmetric linear phase low pass Finite Impulse Response (FIR) filter using Genetic Algorithm GA is a computational optimization technique; which optimizes the Mean Square Error (MSE) and filter coefficients with the help of fitness function. The optimize results are compared with two different filter designing analysis (FDA) methods viz. least square method and equiripple method
Published in Current Trends in Signal Processing · Vol. 5, Issue 2, 2015 · pp. 9–14 Read article
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Implementation of Kalman Filter Using TDC and PLL for Object Detection and Tracking in Signal Processing
Abstract: The measurement uncertainty of GPS receivers is dependent on a wide range of external factors, including receiver clock precision, thermal noise, atmospheric influences, and minute variations in satellite positions. Estimating hidden states precisely and accurately in the face of uncertainty is one of the main problems facing tracking and control systems. Among the most significant and widely used estimate methods is the Kalman Filter. It uses imprecise and erratic measurements …
Published in Current Trends in Signal Processing · Vol. 13, Issue 2, 2023 · pp. 38–47 Read article
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Effect of MoO3 as a Promoter in Cu-Mgo-Al2O3 (Hydrotalcite like Precursor) Catalyst for the Vapour Phase Hydrogenation of Cinnamaldehyde
Abstract: An attempt has been made to study the role of MoO3 as promoterin Cu-MgO-Al2O3 (hydrotalcite like precursor) for the hydrogenation of cinnamaldehyde in vapour phase at atmospheric pressure. It is interesting to note that the MoO3 addition plays an important role in maintaining enhanced activity and stability of the catalyst by avoiding agglomeration of Cu species during the time on stream study. The discrepancy in the catalysts was clearly monitored …
Published in Journal of Catalyst & Catalysis · Vol. 2, Issue 2, 2015 · pp. 27–32 Read article
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Effect of Ta2O5 as a Support in Phosphotungstic Acid Catalysts for Vapor Phase Dehydration of Glycerol to Acrolein
Abstract: The Ta2O5 supported phosphotungstic acid (HPA) catalysts were investigated for vapor phase dehydration of glycerol to acrolein and materials were synthesized by impregnation method. The above HPA catalysts were characterized by Raman spectroscopy to identify the Keggin ion and temperature programmed desorption of ammonia to explore the acidity of the catalysts. The findings of Raman spectra shows that the Keggin ion of heteropolyacid intact with support. NH3-TPD results confirm that …
Published in Journal of Catalyst & Catalysis · Vol. 2, Issue 3, 2015 · pp. 1–6 Read article
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Faults Detection Techniques of Three Phase Induction Motor: A Review
Abstract: Induction motors are the most commonly used machines in industries. It is very robust, inexpensive and easy to maintain. Induction motors appear to various faults during their operation. Accurate fault identification is the prime industrial need to reduce breakdown, maintenance and revenue losses. Therefore, an early fault detection is needed for the protection of the motor against electrical and mechanical failures for continuing their operation safely. The main perspective of …
Published in Journal of Control & Instrumentation · Vol. 9, Issue 1, 2018 · pp. 45–49 Read article
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Control of Three Phase Agriculture Motor Using Mobile Technology
Abstract: AbstractThe main source of livelihood for majority population in India is Agriculture. This activity feeds the world and helps in the economic growth of the nation. India is a semiarid region where the climatic conditions are not uniform. Majority of farmers depend on bore-wells for irrigation of their fields. The groundwater table is depleting drastically because of excess usage. The power supplied to the agriculture sector is not scheduled properly …
Published in Journal of Microcontroller Engineering and Applications · Vol. 6, Issue 2, 2019 · pp. 34–37 Read article
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Sinusoidal Pulse Width Modulation Switching Technique based Single Phase Inverter
Abstract: This paper discusses about the inverter which transfers power from DC source to AC load side. Inverters are usually used in motor drive, static var compensators, uninterruptible power supplies (ups), etc. Pulse Width Modulation (PWM) technique is used because the total harmonics distortion is low as compared with other techniques. The switching scheme of sinusoidal PWM permits control of the frequency and the magnitude of the output. This switching scheme …
Published in Journal of Power Electronics and Power Systems · Vol. 9, Issue 1, 2019 · pp. 34–41 Read article
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Mitigation of Magnetizing Inrush Current for Unloaded Three Phase Electrically Coupled Power Transformers involving Remanence Effect using Distributed Asymmetrical Winding Configuration
Abstract: This paper demonstrates a novel approach to mitigate the magnetizing inrush current of a coupled unloaded transformer to a considerable extent having had the residual magnetism present in its core with the aid of a modern distributed asymmetrical winding configuration alike from the conventional methods. The proposed method has been analyzed on Power transformer with different configuration of winding, core design arrangement while feeding from the mains to star and …
Published in Journal of Power Electronics and Power Systems · Vol. 6, Issue 2, 2016 · pp. 89–99 Read article
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Analysis and Implementation of Carrier Based and Space Vector PWM Techniques on a Three-Phase Voltage Source Inverter
Abstract: This paper presents a comprehensive analysis of carrier based and space vector pulse width modulation (PWM) techniques on a two-level three-phase voltage source inverter (VSI). The results of simulations performed in Matlab/Simulink are compared to the results obtained from the implementation of the PWM schemes on an actual VSI whose PWM signals are generated using dSpace. The analysis of the inverter line to line voltages includes, a fast fourier transform …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 3, 2015 · pp. 125–139 Read article
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A Novel Development for Vapor Phase Alkylation of Aniline Processed with Clay, Oxides and Zeolite
Abstract: Vapour phase catalytic alkylation of aniline with ethanol is carried out over new catalysts including clay (attapulgite, and bentonite), metal oxides (Fe2O3 impregnated on attapulgite, and Fe2O3 + GeO2 supported on attapulgite) and zeolites (ZSM–5) in a down flow reactor. The reaction conditions viz temperature, molar ratio (aniline/ethanol) and catalyst lead to both C– and N–alkylation, with highest conversion of aniline to ethanol at 370°C temperature and 1:6 molar ratio …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 9, Issue 3, 2022 · pp. 1–8 Read article
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Simulation of Single Phase AC-DC Power Factor Corrected Converter: A Technological Review
Abstract: This paper is intended to review the significant development of power factor correction by using boost converter topology for single phase power supply to the load in the last decay. Contents in this review paper starts with an introduction of power factor correction by boost converter topology adopted by many industries. Different power factor correction methods are available, which can be applied to get better power factor and low harmonic …
Published in Trends in Electrical Engineering · Vol. 6, Issue 1, 2016 · pp. 72–83 Read article