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755 articles for “formatting”
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Pressure Data Analysis and Multilayer Modeling of A Gas-Condensate Reservoir
Abstract: Kailastila gas field located at Golapgonj, Sylhet, is one of the largest gas fields in Bangladesh. It produces a high amount of condensate along with natural gas. For the high values of GOR, it may be treated as a wet gas at reservoir condition. Three main sand reservoirs are confirmed in this field (upper, middle and lower). In this study, it has been shown that reservoir parameters of this gas …
Published in Journal of Petroleum Engineering & Technology · Vol. 4, Issue 2, 2014 · pp. 7–15 Read article
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Dodecahedron Methane Hydrate Cage Structure – An Ab initio Study
Abstract: Comparative study of 512clathrate hydrate cage having different numbers of methane guest molecules encapsulation is carried out by calculating interaction energy, encapsulation energy and thermo-chemical stability parameters using density functional theory-based calculation with B3LYP functional and 6-31G(d) basis set. Nuclear magnetic resonance spectroscopy(NMR), Infrared spectroscopy (IR spectroscopy) and Raman spectroscopy of empty and methane encapsulated 512clathrate hydrate cages, change in Gibbs free energy and methane hydrate formation enthalpy are predicted …
Published in Journal of Petroleum Engineering & Technology · Vol. 2, Issue 1-3, 2012 · pp. 51–64 Read article
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Breathing prediction of fracture deviated wellbore through flooding mechanism
Abstract: Wellbore breathing is a common occurrence during drilling operations, but the down hole mechanism and how it manifests itself in surface and subsurface processes, is not well understood. It often result in a drilling fluid gain at surface and are misidentified as a kick, resulting in unneeded shut in periods and associated non-productive time (NPT). Further, misidentification of wellbore breathing as underbalance often results in increases in mud weight, which …
Published in Journal of Petroleum Engineering & Technology · Vol. 9, Issue 2, 2019 · pp. 5–13 Read article
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Estimation of Dulling Rate and Bit Tooth Wear Using Drilling Parameters and Rock Abrasiveness
Abstract: Optimisation of the drilling operations is becoming increasingly important as it can significantly reduce the oil well development cost. One of the major objectives in oil well drilling is to increase the penetration rate by selecting the optimum drilling bit based on offset wells data, and adjust the drilling factors to keep the bit in good condition during the operation. At the same time it is important to predict the …
Published in Journal of Petroleum Engineering & Technology · Vol. 9, Issue 3, 2019 · pp. 1–20 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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Castellated Beams with and without Stiffeners- A Review
Abstract: Use of castellated beams has it benefits like it is economical, gives more strength with less material, easy to erect. Studies related to castellated beam show that quantifiable reduction in the weight of structure is accomplished by allowing web openings without reducing structural strength or requirements of serviceability. Castellated beams are fabricated by cutting I section in zig zag pattern to create shapes like hexagonal, circular, rectangular and re-joining it …
Published in Journal of Structural Engineering and Management · Vol. 6, Issue 2, 2019 · pp. 13–18 Read article
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Effect of Process Parameters on TIG Weld-Brazing of Aluminum Alloy to Galvanized Steel
Abstract: AbstractAbility to join aluminum alloy to steel enables weight reduction of automobile bodies. Gas tungsten arc welding (GTAW) process was employed to weld-braze A8011-H14 aluminum alloy to galvanized steel in lap configuration. The influence of heat input on bead formation and joint strength was investigated. The microstructural characterization was carried out using an optical microscope and scanning electron microscope. The chemical composition was analyzed using energy dispersive spectroscopy technique. The …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 5, Issue 3, 2018 · pp. 8–14 Read article
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Comparative studies of Oxidation and hot corrosion behaviors of uncoated and detonation gun sprayed Cr3C2-25NiCr coating on SA-213 boiler steel at 8000C
Abstract: Fe-based alloys suffer oxidation and hot corrosion when the surfaces were in contact with air (oxidation) as well as the salty atmosphere (Hot corrosion) at elevated temperatures. In these atmospheric conditions, non-protective oxide Fe2O3 was formed on the surface of alloys. Oxidation and hot corrosion have been recognized as a major problem in the applications of the diesel engine, boilers, gas turbines, and chemical power plant etc. Detonation-gun sprayed Cr3C2-25NiCr …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 6, Issue 1, 2019 · pp. 17–22 Read article
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The New Technology of Phytoplankton’s Concentration from Lake “Green Water” for Production of the High-quality Biofuel Having Positive Impact on the Environment
Abstract: The “green water” formation in the stagnant zones of fresh lakes occurs due to the generation and enhanced reproduction of phytoplankton under the sun influence. Due to non-influx of fresh water, phytoplankton dies, releasing hydrogen sulfide, and water becomes unusable and threatens the ecological situation of the lake. In this regard, the development of the concentration of phytoplankton from “green water” purification is an urgent task associated with positive impact …
Published in Trends in Electrical Engineering · Vol. 9, Issue 2, 2019 · pp. 27–34 Read article
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Autonomous Optimization, Method Design of Casting and Its Experimental Validation: A Case Study
Abstract: The metal casting is a complicated but a mass production manufacturing technique. But on the otherhand, the chances of casting rejection are also more if proper attention is not made at every stage ofcasting production. In the metal casting process, higher yield and minimum defects level are expectedby the foundry industries. In the present global and competitive world metal casting industries needsto perform efficiently with a reduction in rejections. This …
Published in Trends in Machine design · Vol. 8, Issue 1, 2021 · pp. 1–10 Read article
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Feasibility Analysis of Advanced Modulation Techniques for FSO in Different Weather Conditions
Abstract: AbstractIn recent times, the ever increasing demand of higher bandwidth and more data rate had led researchers to explore new dimensions in wireless technology. One of the most promising fields is that of free-space optics (FSO). Light is used to carry information through space with the physical medium being the air. This paper investigates the effect on Q-factor and power loss for various advanced modulation schemes under different weather conditions. …
Published in Trends in Opto-electro & Optical Communication · Vol. 6, Issue 2, 2016 · pp. 1–7 Read article
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Non-linear Photonic Crystals and their Applications: A Review
Abstract: The nonlinear photonic crystals (NLPCs) are periodic material structures in which nonlinear materials are used for photonic structure formation. In nonlinear photonic crystals, the optical response mainly depends on the intensity of the light beam that propagates through the photonic crystal. These structures show new optical properties with improved or enhanced or new functionalities that cannot be observed in linear photonic crystals. In addition to this, using nonlinear materials in …
Published in Trends in Opto-electro & Optical Communication · Vol. 12, Issue 2, 2022 · pp. 36–39 Read article
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Performance Analysis of DE-QPSK and π/4 QPSK with MRC Receiver over η-µ fading channel
Abstract: This study presents approximate but simple expression for the average symbol error rate of differentially encoded quadrature phase shift keying (DE-QPSK) and π/4 QPSK with Maximal Ratio Combining (MRC) diversity over independent η-µ fading channels. Numerical results demonstrate the error performance for different values of fading parameter µ for Lth order MRC for Format 1 and Format 2. Furthermore, error performance of both modulation techniques has also been analyzed for …
Published in Journal of Communication Engineering & Systems · Vol. 8, Issue 3, 2018 · pp. 53–59 Read article
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Efficacy of Shvitrari Yoga and Jyotishmati Tailam on Shvitra
Abstract: AbstractSince the ancient times, human being is trying to build a healthy society and inachieving this goal Ayurveda science has played a very important role. Nowadays, due to western culture, it is very difficult to follow the schedules as described in Ritucharya, Dincharya of Ayurveda science and due to disturbed living style, physical as well as mental diseases are increasing. Shvitra (Vitiligo) mainly a lifestyle related disorder is characterized as …
Published in Journal of AYUSH: Ayurveda, Yoga, Unani, Siddha and Homeopathy · Vol. 2, Issue 1, 2013 · pp. 33–39 Read article
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Combination Therapy with Propranolol and Cephalanoplos Segetum Against First Variceal Hemorrhage in Patients with Cirrhosis
Abstract: Background: Primary prophylaxis aims to prevent variceal hemorrhage in patients with esophageal varices who do not have a history of hemorrhage. The use of nonselective beta blockers is the first option for primary prophylaxis to prevent variceal bleeding in patients with the cirrhosis. Application of non-selective beta blocker has various kinds of merits, but patient's endurance to beta blocker becomes a problem and it does not prevent primary variceal bleeding …
Published in Research and Reviews: A Journal of Medicine · Vol. 12, Issue 1, 2022 · pp. 17–22 Read article
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Correlation of Ki-67 Score with Nottingham Histological Grading in Carcinoma Breast: A Single Institution Experience
Abstract: Though it is reasonably well established that Ki-67 positivity is an independent predictor of ultimate prognosis and course of carcinoma breast and its recurrence, many lacunae exist. Ki -67 score correlation with histological grading will establish importance of nuclear antigen Ki-67 as prognostic factor in Indian population. This study was aimed to assess histological grading of breast carcinoma by Nottingham Grading System (Modified Scarff- Bloom- Richardson system) and to correlate …
Published in Research and Reviews: Journal of Oncology and Hematology · Vol. 6, Issue 1, 2017 · pp. 1–5 Read article
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Initial Diversion in Hirschsprung’s Disease: Loop versus End Colostomy. Does it Make a Difference?
Abstract: Background: Staged surgery for Hirschsprung’s disease involving initial stoma formation with biopsies to find the level of aganglionosis and subsequent pull-through procedure like Duhamel’s Pull through is the most recommended management protocol at several institutions. The nature of stoma, whether loop or end, often determines the patient’s morbidity in this approach and would also have a say in the duration and ease at the time of definitive pull-through procedure. Aims …
Published in Research and Reviews : Journal of Surgery · Vol. 8, Issue 3, 2019 · pp. 4–8 Read article
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The Concept of Asbab-E-wajood (Causes of Being)
Abstract: Aristotle said that we don’t have complete knowledge of a thing until we get hold on its why, which tells its cause. If we consider anything and wanted to know how it exists or what keeps its existence possible, then there arises 4 questions i.e. What is it made of? What made it? What is it; Shape Structure, Arrangements? And what is it for? There are seven factors which combine …
Published in Research & Reviews : A Journal of Unani, Siddha and Homeopathy · Vol. 9, Issue 2, 2022 · pp. 16–21 Read article
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Unani Opinion on Nephrolithiasis (Hisat-e- kulyah) and its Management
Abstract: Nephrolithiasis is called Hisat-e-Kulyah in Unani system of medicine. Nephrolithiasis is a disease in which crystal aggregates are generally formed in the kidneys. It is one of the most common urinary tract abnormalities affecting approximately 15% of the population worldwide and approximately 2.3% of the population in India. Since historical times, Urolithiasis (Hisat-e-Bauliyah) or Hisat-e-Kulyah (Nephrolithiasis) has been treated by Unani doctors such as Hippocrates, Galen, Avicenna, Razi, Ibn- e-Zohr …
Published in Research & Reviews : A Journal of Unani, Siddha and Homeopathy · Vol. 9, Issue 3, 2022 · pp. 17–21 Read article
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Electron beam irradiation studies of polyethylene maleic anhydride on their Chemical and Thermal properties.
Abstract: The electron beam (e-beam) irradiation effects on polyethylene maleic anhydride (MANPE) are investigated by spectroscopic and thermal methods. The MANPE irradiated with electron beam to a radiation dose of 30, 60 and 90 K Gy and the resultant changes in their chemical structure and thermal properties have been investigated by Electron spin resonance (ESR), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), X-ray diffraction (XRD) and scanning electron microscopy …
Published in Journal of Polymer & Composites · Vol. 6, Issue 2, 2018 · pp. 17–30 Read article