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871 articles for “Calculations”
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Evaluation and Analysis of Fire load in Storage Facility of Manufacturing Industry
Abstract: In recent years, industrial and residential fire is drawing more and more concerns. According to official government data, there have been numerous fire accidents in the industrial sector, leading to both casualties and significant property damage. Of particular concern are certain buildings in the pharmaceutical industry where large quantities of highly flammable and toxic substances are stored in confined spaces. This paper aims to examine the amount of flammable and …
Published in Journal of Industrial Safety Engineering · Vol. 10, Issue 2, 2023 · pp. 1–7 Read article
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Analysis of Natural Frequency for Three-Dimensional Model of Transformer Winding Using FEA
Abstract: AbstractPower transfer winding is prone to a number of events of a short circuit. However, over a period of time, capabilities of winding to withstand forces generated during such events decrease. In order to understand the behavior of winding at excitation, study of natural frequency is an important parameter. In this paper, winding’s radial and axial modes are studied with the help of finite element approach. Three-dimensional (3D) and two-dimensional …
Published in Journal of Instrumentation Technology & Innovations · Vol. 8, Issue 1, 2018 · pp. 8–12 Read article
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Wireless Wrist Pulse Monitor Design
Abstract: Wrist pulse has been used for diagnosis of disease in Ayurveda and traditional Chinese medical system. But this diagnosis is subjective to the experience and sense of the medical practitioner as same pulse may be interpreted in different way by different person. In order to make this diagnosis objective rather than subjective, digitization of wrist pulse is needed. Many platforms have been developed for acquiring the wrist pulse; however, they …
Published in Journal of Microcontroller Engineering and Applications · Vol. 3, Issue 2, 2016 · pp. 27–34 Read article
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Design and Analysis of Microstrip Band Reject Filter with Modified Rectangular and Hexagonal Shape Ground Structure
Abstract: In this proposed paper, the performance of band stop filter with modified ground structure is examined; the modified ground structure includes four rectangular and a hexagonal etched shapes in ground plane. Parameters of the proposed design were calculated at the cut off frequencies of f1=1.16 GHz, f2=1.89 GHz and also proposed designs having substrate height of 1.6 mm, loss tangent of 0.02 and dielectric constant of 4.4. Results are calculated …
Published in Journal of Microwave Engineering and Technologies · Vol. 4, Issue 2, 2017 · pp. 1–5 Read article
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Design Optimization of Microstrip Antenna with EBG and DGS Using the Genetic Algorithm to Reduce the Mutual Coupling
Abstract: The purpose of this paper is to construct, create, and reproduction of different antenna structures using electromagnetic band gap (EBG) materials and defected ground structures (DGS). Microstrip antennas are processed in order to improve performance by changing the shape of the geometry of the antenna, in particular to reduce the mutual coupling between the elements. The propagation of electromagnetic waves in a specified frequency range have the unique ability to …
Published in Journal of Microwave Engineering and Technologies · Vol. 3, Issue 1, 2016 · pp. 11–30 Read article
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Design and Analysis of Microstrip Band Stop Filter with Modified Circle and Dumbbell Shape Ground Structure
Abstract: In this proposed paper the performance of Band stop filter with modified ground structure is analyzed in this specific work; the modified ground structure includes a circle and dumbbell etched shapes in ground plane. Parameters of the proposed configuration were calculated at the cut off frequencies of f1=1 GHz, f2=1.62GHz and also proposed designs having substrate height of 1.6 mm, loss tangent of 0.02 and dielectric constant of 4.4. Results …
Published in Journal of Microwave Engineering and Technologies · Vol. 2, Issue 2, 2015 · pp. 26–31 Read article
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A Dipole Circular Patch Antenna for Operation in the X-Band
Abstract: This microwave engineering research paper proposes, designs, calculates, and simulates a novel dipole circular patch antenna for theoretical wideband operations in the X-band (the 8 GHz to 12 GHz frequency range). This proposed microstrip patch antenna was realized using FR-4 as a dielectric (a thickness of 1.5 mm) with copper being used in both the ground plate and the two transmitting circular elements (the so-called patches with a thickness of …
Published in Journal of Microwave Engineering and Technologies · Vol. 8, Issue 2, 2021 · pp. 1–8 Read article
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Bearing Defect Diagnosis: An Approach for Manufacturing Industries Using Wavelet Transform Based Features
Abstract: To maintain reliability in the manufacturing units, industries have concentrated their attention on the condition based maintenance. Fault detection and diagnosis are the two of three condition based maintenance mainstays. Bearing is one of the most important and essential components of the rotating machines. Hence, the researchers have shown their interest in bearing fault detection and diagnosis from the last few years. They mainly use bearing vibration as fault characteristics …
Published in Journal of Microelectronics and Solid State Devices · Vol. 4, Issue 1, 2017 · pp. 15–21 Read article
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Worker Radiation Exposure during Transportation of Irradiated LEU Targets in a Typical MTR Reactor
Abstract: The paper estimates the radiation dose exposure for the worker in the second Egyptian research reactor ETRR-2 during the process of transporting the irradiated low enriched uranium LEU plates from the core to the hot cell. The aim of estimating the radiation doses distribution is determining the exposure dose for the worker during the transportation process as a safety point of view. In order to estimate irradiated LEU plates radiation …
Published in Journal of Nuclear Engineering & Technology · Vol. 10, Issue 3, 2020 · pp. 48–51 Read article
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Thermal degradation analysis of banana fiber by Coats & Redfern methodThermal Degradation Analysis of Banana Fiber by Coats and Redfern Method
Abstract: Nowadays, natural fiber is more advantageous than synthetic fiber. Natural fibers are used as reinforcement material with combination of polymer matrix. These are of different types like banana fiber, bamboo fiber, sisal, hemp, and jute, etc. Banana fiber is one of them which is most common and easily available fiber in global scenario. It is biodegradable, renewable, and lower in cost. This fiber is higher in cellulosic content. Out of …
Published in Journal of Polymer & Composites · Vol. 11, Issue 2, 2023 · pp. 28–32 Read article
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Available Transfer Capability (ATC) under Deregulated Environment
Abstract: The structure of the power industry is moving towards deregulated environment from the regulatory environment (monopoly). With deregulation taking place in the power industry, it introduces a more competitive environment in terms of free choice of suppliers for the trading of electricity. Monopolies of an industry will lead to a poor performance from the sector as there are no competitions for the sole company to strive for improvement. It will …
Published in Journal of Power Electronics and Power Systems · Vol. 6, Issue 2, 2016 · pp. 85–88 Read article
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Heat Integration of Crude Organic Distillation Unit using ASPEN PINCH
Abstract: chemical and petrochemical plants. In this article, the heat integration of crude organic distillation unit was elucidated with pinch analysis and ASPEN pinch simulating tool. Minimum utilities are calculated by constructing composite curves, shifted composite curves, grand composite curves and using problem table algorithm. Simulation studies include the effect of ΔTmin on hot and cold utilities requirement. Further Exergy losses are calculated by constructing Carnot composite curves and Carnot grand …
Published in Journal of Petroleum Engineering & Technology · Vol. 5, Issue 2, 2015 · pp. 35–46 Read article
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Review of Subsea Pipeline for Minimizing Thermal and Pressure Expansion
Abstract: As the offshore oil and gas fields have been exploited in deeper water, subsea pipelines are required to operate at high temperatures and pressures. It causes subsea pipelines to be more subject to movements both in lateral and axial directions due to the loads produced by high temperatures and pressures. Some high temperature pipelines have experienced the cumulative axial displacement of an overall pipeline length over a number of start-up/shut-in …
Published in Journal of Petroleum Engineering & Technology · Vol. 4, Issue 1, 2014 · pp. 10–22 Read article
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Study on Effect of Insulation Design on Thermal-Hydraulic Analysis: An Important Aspect in Subsea Pipeline Designing
Abstract: The most imperative and challenging operational hazards for oil and gas pipelines are the risks associated with the transportation of fluids. When water, oil and gas flow simultaneously inside the pipeline, there are quite high chances that, water and hydrocarbon fluids can form and deposit hydrate such as wax and asphaltene on the inner surfaces of the pipeline and gradually blocking it. In this paper we explore and compare the …
Published in Journal of Petroleum Engineering & Technology · Vol. 4, Issue 1, 2014 · pp. 33–44 Read article
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Methane Encapsulation in 51264 Clathrate Cage: A Theoretical Study
Abstract: An explicit analysis of 51264 clathrate hydrate cage having different numbers of methane guest molecules encapsulation has been performed depending on calculated interaction energies, encapsulation energies, HOMO-LUMO energies and Raman spectroscopy using density functional theory with B3LYP functional and 6-31G(d) basis set. It is observed from this study that one methane molecule accommodation is most amiable process and theoretically maximum two methane molecules encapsulation is feasible in 51264 clathrate cage …
Published in Journal of Petroleum Engineering & Technology · Vol. 2, Issue 1-3, 2012 · pp. 65–72 Read article
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Theoretical Prediction of Maximum Number of Methane Molecule Accommodation in Unit Cages of S-I Clathrate Structure
Abstract: Density Functional Theory (DFT) based simulations have been performed to determine maximum possible number of methane molecule accommodation in unit cages of methane hydrate structure-I (S-I). Interaction energy, encapsulation energy and incremental encapsulation energy are calculated using B3LYP functional and 6-31+G(d) basis set. Nuclear magnetic resonance and Raman spectroscopy of one methane encapsulated are predicted at B3LYP/6-31G(d) level for 51262 hydrate cage. Maximum one methane molecule accommodation both in 512 …
Published in Journal of Petroleum Engineering & Technology · Vol. 2, Issue 1-3, 2012 · pp. 116–122 Read article
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Simulation Studies on Effect of Parameters on to the Matrix Acidizing
Abstract: Matrix acidizing entails introducing an acid solution into the formation at a pressure lower than the fracture pressure in order to dissolve some of the minerals present. The major objective of removing the formation damage close to the wellbore, therefore restoring the natural permeability and greatly rising the well productivity. This paper is a simulation study on matrix acidizing of both sandstone and carbonate reservoirs using MATLAB software. Design parameters …
Published in Journal of Petroleum Engineering & Technology · Vol. 11, Issue 2, 2021 · pp. 25–34 Read article
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Impact of New-Defined Criteria on Evaluation of Depth of Investigation for Radial and Transient Linear Flow
Abstract: The depth of investigation (DOI) is a fundamental parameter in many reservoir engineering calculations, whereas there is no generally accepted industry standard and evaluation method so far. Inconsistencies or errors will arise when unconditionally using various formulae to calculate the value of DOI. This paper investigated the key issues about DOI in terms of production rate, pressure cut-off value, especially the selection of evaluation criteria. New relations for DOI evaluation …
Published in Journal of Petroleum Engineering & Technology · Vol. 11, Issue 3, 2021 · pp. 7–18 Read article
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Microhardness of II-VI and III-V Semiconductors
Abstract: A correlation between microhardness and bond hardness of II-VI and III-V semiconductors is presented in this study. Bond hardness is calculated using valence electron number, covalent / ionic radius and co-ordination number of bonded atoms of the tetrahedral semiconductors. The covalent and ionic contributions to bond hardness are separately calculated to get resultant bond hardness. Results obtained using the correlation agrees well with the reported, experimental and theoretical values of …
Published in Journal of Semiconductor Devices and Circuits · Vol. 8, Issue 1, 2021 · pp. 31–36 Read article
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Seismic Response of Multistoreyed Building for Different Stiffness Conditions
Abstract: Many buildings in the present scenario have irregular configurations both in elevation and plan. This in future may subject to devastating earthquakes. It is necessary to identify the performance of the structures to withstand against disaster for both new and existing buildings. Now a days, openings in the floors is common for many reasons like stair cases, lighting architectural etc., these openings in diaphragms cause stresses at discontinues joints with …
Published in Journal of Structural Engineering and Management · Vol. 4, Issue 2, 2017 · pp. 22–26 Read article