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651 articles for “Bur”
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Steady State and Transient Analysis of 6-Pulse Rectifier Bridges Including Faulty Diodes
Abstract: This paper addresses the steady-state and transient responses of un-controlled faulty 6-pulse diode rectifier bridge circuits. The faulty bridges can include several simultaneous diode valves’ open- or short-circuits. An efficient representation of the diodes is adopted in order to describe their performance in both the forward and reverse directions. A set of simultaneous differential and algebraic equations simulating the faulty rectifier bridge is presented. Its numerical solution is obtained through …
Published in Journal of Power Electronics and Power Systems · Vol. 10, Issue 3, 2020 · pp. 19–31 Read article
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Analysis and Application of New Acid Fracturing Technology for Carbonate Reservoir in Offshore Deep Well with High Temperature
Abstract: Acid fracturing is the key production and stimulation technology for the oil-gas reservoirs. This paper developed Loss Control Acid and Divert Acid System used in the Bohai Bay Nan-pu oilfield Ordovician carbonate reservoir, which has the problems of deep reservoir burial depth, high temperature, well developed fracture and cavern and high anisotropy. This formation used to be acid fractured with gelled acid and it responded poorly. It also has a …
Published in Journal of Petroleum Engineering & Technology · Vol. 6, Issue 2, 2016 · pp. 50–62 Read article
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Performance of Water Injection in Oil Rim Reservoir Recovery Factor
Abstract: This study examines the potential improvements in recovery factors in optimizing oil production from oil rim reservoirs through water injection and without water injection (i.e. primary production) scenarios in the development strategies of the oil rim reservoirs. A generic simulation model developed from ECLIPSE dynamic simulator was used as core representative of oil rim reservoirs to experiment production optimization with and without water injection. Reservoir data of permeability, oil rim …
Published in Journal of Petroleum Engineering & Technology · Vol. 4, Issue 3, 2014 · pp. 31–38 Read article
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Examination of Recycled Used Lube Oil Using Niger Delta Locally Source Material
Abstract: Present research work was conducted to demonstrate in detail the acid-clay recycling processes of used lube oil techniques and treatment. Adequate attention is given to these techniques employed in the recycling of used lube oil. A major menace today is the uncontrolled dumping and improper disposal of used lube oils, the magnitude which is conservatively estimated to be very high and therefore threatens our environmental existence. A comparative study was …
Published in Journal of Petroleum Engineering & Technology · Vol. 10, Issue 3, 2020 · pp. 9–14 Read article
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Identification of Elements Exist in Area Around Khartoum Petroleum Refinery Using Spectroscopic Method
Abstract: Laser-induced breakdown spectroscopy (LIBS) is a method of atomic emission spectroscopy (AES) that uses a laser-generated plasma as the hot vaporization, atomization, and excitation source. Plasma is often called the fourth state of matter. The various states of matter occur as a substance is heated to temperatures corresponding to thermal energies above the binding energies for particular state of matter. Structured systems placed in a sufficiently hot environment. LIBS technique …
Published in Journal of Petroleum Engineering & Technology · Vol. 12, Issue 1, 2022 · pp. 1–14 Read article
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Petroleum Geothermal energy and process of mines extract
Abstract: Mining consumes a lot of energy, and because so much money is spent on fuel and energy transportation, energy costs are particularly expensive for remote mines that are off the grid. The necessity to switch to greener power sources to lessen its environmental impact is becoming increasingly clear to the mining industry as well. Geothermal energy is a crucial, albeit frequently underutilized, energy source for the mining sector as it …
Published in Journal of Petroleum Engineering & Technology · Vol. 12, Issue 2, 2022 · pp. 35–40 Read article
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Development and Optimization of Cold Rolled Slitting Machine Process
Abstract: Slitting machine is now widely used for dividing a wide strip into a plurality of narrow strips or for trimming the unnecessary or unacceptable edge portion of relatively wide sheet metal stock. In some cold rolling slitting machine a problem has been found that the camber is formed at the time of cutting. When the strip passes through skin pass operation, burr is formed due to friction which will result …
Published in Journal of Production Research & Management · Vol. 9, Issue 1, 2019 · pp. 1–8 Read article
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External Loan: One Step Forward, Many Step Backward for Socio-Economic Development in Nigeria
Abstract: The paper focuses attention on the negative impact of external loan on the Nigerian socio-economic development. The desire for rapid socio-economic development at independence forced the leaders of the first republic to collect one form of loan or the other in order to improve the nation’s infrastructure. In the 1970’s the oil boom re-positioned Nigeria as one of the rich and potential countries destined for rapid socio-economic development. Unfortunately, the …
Published in Journal of Production Research & Management · Vol. 4, Issue 3, 2014 · pp. 15–22 Read article
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Ergonomic Design and Intervention of a Chapati Making Machine
Abstract: An ergonomic analysis of a chapati maker can provide valuable insights into the design and use of the device, and can help to identify opportunities to improve the safety and efficiency of work practices. Workers use Chapati maker throughout the day, which can cause a variety of musculoskeletal disorders. Musculoskeletal disorders caused by the individual's job are one of the main issues since they have a significant negative influence on …
Published in Journal of Production Research & Management · Vol. 13, Issue 3, 2023 · pp. 1–11 Read article
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A Review on Reliability Modeling, Performance and Cost-benefit Analysis of Optical Fiber Network in DCRUST
Abstract: AbstractThis paper includes the survey of optical fiber network layer in the Deenbandhu Chhotu Ram University of Science and Technology (DCRUST) and its reliability modeling aspects to evaluate reliability of that optical fiber network. To find out reliability is important part of a system is important to know its period of working, failure rates and cost benefit analysis. Optical fiber which are buried are significantly more vulnerable to human related …
Published in Journal of Semiconductor Devices and Circuits · Vol. 7, Issue 1, 2020 · pp. 8–13 Read article
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Analysis of RC Frames Using Different Bracing Systems in Different Positions and Zones
Abstract: Structures are mainly built to enhance the performance of several activities like recreation, transportation, power generation, etc. They are built to sustain the loads coming on them during their service life by carrying adequate strength and also limit the deformation by possessing enough stiffness. Strength of a structure depends mainly upon the characteristics of material with which it is constructed. Stiffness is dependent upon the cross-sectional and geometrical properties of …
Published in Journal of Structural Engineering and Management · Vol. 3, Issue 1, 2016 · pp. 16–27 Read article
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Development of Controlled Concrete by using Hypo Sludge
Abstract: Over 300 million tones of industrial wastes are being produced per annum by chemical and agricultural process in India. These materials pose problems of disposal and health hazards.The wastes like phosphogypsum, fluorogypsum and red mud contain obnoxious impurities which adversely affect the strength and other properties of building materials based on them. Out of several wastes being produced at present, the use of phosphogypsum, flurogypsum, lime sludge, hypo sludge, red …
Published in Journal of Structural Engineering and Management · Vol. 1, Issue 1, 2014 · pp. 16–21 Read article
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Design and Analysis of Different Welding Joints
Abstract: Two parts linked together by the use of localised heat or fusion is called a weld; they join together either with or without the use of pressure or filler material application. Necessary heat required is obtained by burning of gas or by using an electric arc. The word joint and weld are different, weld means joining of two metals by heat and joint means a point where two parts are …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 4, Issue 2, 2017 · pp. 18–22 Read article
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Short Review on Lubrication Coatings and Reduction in Friction
Abstract: Specialized Epoxy coatings with a low coefficient of friction can be applied to metal, glass, and plastic substrates. They produce long-lasting, slick surfaces that prevent wear and abrasion. These friction compounds are corrosion-resistant, chemically inert, and simple to maintain. Products are made to cut down on repair costs and increase element life. The coating is just a protective layer that is put to an object's surface, also known as the …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 8, Issue 3, 2021 · pp. 28–32 Read article
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Effect of Sol-Gel Coating on Fire Performance and Optical Properties of Wood Panels
Abstract: Investigates the impact of sol-gel coating on the fire performance and optical properties of wood panels.SEM, EDX, and infrared spectroscopy with the Fourier transform were used to characterize the sol-gel coating, which was put on to the wood panels using a dip-coating technique. The fire performance of the coated and uncoated wood panels was evaluated by measuring the ignition time, flame spread rate, and total heat release rate. The optical …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 10, Issue 1, 2023 · pp. 20–24 Read article
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LTE & 5G NR Carrier Aggregation Network Optimization through Advanced Measurement Configuration
Abstract: The ability to merge numerous frequency carriers—component carriers—to increase transmission bandwidth and throughput speeds over what can be achieved with a single carrier is known as carrier aggregation, and it is a crucial technology in 4G LTE and 5G networks. Cellular devices may attain gigabit data speeds by combining carriers from several frequency bands, such as 600 MHz to mm Wave frequencies, to increase downlink and uplink capacity. This study …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 10, Issue 2, 2023 · pp. 35–45 Read article
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An Overview of the Design and Optimization of Antennas Employing Machine Learning Algorithms and Methodologies
Abstract: This paper offers a comprehensive exploration of the integration of machine learning (ML) techniques in antenna design and optimization, reflecting the burgeoning interest and potential impact of ML in emerging technologies. The first segment conducts a detailed literature survey, elucidating conventional computational electromagnetic and numerical methods preceding an in-depth discussion on the core facets of ML, encompassing diverse learning categories and frameworks. Additionally, it provides a mathematical exposition on regression …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 10, Issue 3, 2023 · pp. 1–12 Read article
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Hybrid Energy Storage System for Electric Vehicle
Abstract: These days, fuel cell hybrid vehicles are used to reduce the amount of lubricant required and prevent pollution from burning fossil fuels; as a result, large research centers and enterprises are interested in conducting research and development on this topic. Since battery-operated vehicles have a slower thermodynamic and electrochemical response than fuel cell-powered vehicles, hybrid energy storage systems for electric vehicles must be designed using a bidirectional DC-DC converter, batteries, …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 10, Issue 3, 2023 · pp. 31–40 Read article
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Detailed Study of Working and Applications of FinFET Technology and Its Adaptability in Current Era
Abstract: The CMOS technology is following Moore’s law since almost 25 years. The scaling of CMOS transistor has increased packaging density, speed and decreased power dissipation in the integrated circuits. However, CMOS dimension when scaled to nanometer dimension, many physical barriers arise. In sub-100 nm scale, MOSFET has new variants as SOI implementation and double gate. Keywords: Silicon on insulator (SOI), short channel effect (SCE) [2], buried oxide (BOX)
Published in Journal of VLSI Design Tools and Technology · Vol. 2, Issue 1-2-3, 2012 · pp. 52–58 Read article
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Transient Analysis of Non-Uniform Windings or Lines with Non-Linear Termination
Abstract: The paper deals with the transient analysis of non-uniform transmission lines and machine windings with non-linear terminations. The proposed time-domain technique is characterized by a relatively small computational burden. The analytical solution of the derived system of simultaneous differential and algebraic equations is done in Mathematica. The procedure is applied to several representative case studies involving line and winding non-uniformity and/or the non-linearity of the load termination, such as diodes …
Published in Journal of VLSI Design Tools and Technology · Vol. 11, Issue 2, 2021 · pp. 42–50 Read article