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563 articles for “OS”
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The Effect of the Cyclic Steam Stimulation on the Thermal Cement Bond: Cased Hole Wire Logging Evaluation (Segmented versus Original) Tools
Abstract: When focusing on the oil thermal well life integrity, One of the current trends is to optimize the use of the innovative solutions in order to improve the quality of the cement bonding (i.e. cement to pipe bond and formation). This trend is in a trail application in Fula North East thermal wells in Sudanese oilfields. The objective of this paper is to discuss how the Cyclic Steam Stimulation (CSS) …
Published in Journal of Materials & Metallurgical Engineering · Vol. 9, Issue 3, 2019 · pp. 50–60 Read article
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ISOLATION OF CELLULOSIC NANOPARTICLES FROM COIR FIBRE FOR THE PREPARATION OF NATURAL RUBBER COMPOSITES
Abstract: Coir fibre and natural rubber are renewable and sustainable agro-resources that can be harnessed for the production of finished rubber articles on industrial scale. In this research, coir fibres extracted from coconut husk were subjected to alkaline-peroxide delignification. The delignified fibres were further transformed into coir fibre cellulosic nanoparticles (CFNP) with particle size distribution of 68–311 nm and a polydispersity index (PDI) of 0.371 through friction homogenization. These particles were …
Published in Journal of Polymer & Composites · Vol. 6, Issue 1, 2018 · pp. 9–16 Read article
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Reinforcement of Natural Rubber with Sisal/Sugarcane Hybrid Nanofiller
Abstract: AbstractNatural fibres are attracting attention from researchers for the manufacture of polymer composites due to their eco-friendly nature and sustainability. The hybrid effects of Sisal/sugarcane Bagasse based nanofiller on the physico-mechanical properties of natural rubber matrix have been investigated. In the experiment, nanofiller were prepared from alkaline-peroxide treated sisal fibre and sugarcane bagasse through shear and friction homogenization. The nanofiller were hybridized using a single ordinate loading of 30 parts …
Published in Journal of Polymer & Composites · Vol. 6, Issue 3, 2018 · pp. 35–42 Read article
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Synthesis and Characterization of Emulsion Paint Binder from a Copolymer Composite of Dimethylol Urea/Polystyrene
Abstract: AbstractIn our desire to reduce formaldehyde emission from urea formaldehyde resin (UF), dimethylol urea (DMU) was synthesized. Liquid polystyrene (PS) obtained from waste PS material was copolymerized by blending with the DMU at varying concentrations (10–70%). Infrared spectra infers a reactive blending between DMU and PS, while some physical property tests carried out reveals reduction in moisture uptake, rigidity and further reduction in formaldehyde emission among the favorable changes in …
Published in Journal of Polymer & Composites · Vol. 3, Issue 2, 2015 · pp. 11–21 Read article
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Investigation on Mechanical Properties of Bamboo-Plastic Composites by Alkali Treatment and Illustration via Scanning Electron Microscopy
Abstract: The morphological properties, tensile and flexural strength of composite materials made of bamboo fibres and plastic were investigated. Bamboo-plastic composites (BPCs) were made from bamboo fibres, plastic, and urea formaldehyde (UF) resin to evaluate the effects on mechanical properties. Two different types of plastics, namely polypropylene (PP) and low-density polyethylene (LDPE) were used to make the composite fabrication. The bamboo fibres were extracted after soaking them in a sodium hydroxide …
Published in Journal of Polymer & Composites · Vol. 11, Issue 3, 2023 · pp. 86–95 Read article
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The Reserves and Production Trends of Ghana’s Petroleum Resources
Abstract: Fossil fuels consumption has been a major source of energy in the past three decades. Globally, this accounts for over 80% of the primary energy mix. Ghana has huge hydrocarbon reserves. These reserves include fields such as the Saltpond field currently planned for decommissioning, Jubilee, Tweneboa-Enyenra-Ntomme (TEN), and the Sankofa-Gye Nyame (SGN) fields. The dwindling rate of these fields over the years has become a great concern. This work has …
Published in Journal of Petroleum Engineering & Technology · Vol. 12, Issue 3, 2022 · pp. 28–37 Read article
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An Evaluation of the Risk and Safety Standards of some Fuel Stations in Tarkwa
Abstract: Fuel stations play a major role in the downstream sector of the oil and gas industry. However, their activities are associated with high risk of safety and environmental issues posing traits to fuel attendants, customers and immediate environs. Since 2007, Ghana has recorded numerous accidents at some fuel stations across the country claiming lives and unaccounted damages to assets due to inadequate knowledge of standardised safety policies and poor handling …
Published in Journal of Petroleum Engineering & Technology · Vol. 13, Issue 1, 2023 · pp. 6–13 Read article
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Evidence of PDMS-based foam control agent mechanism on crude oil foams
Abstract: Crude oil foam is a frequent problem faced in oil production operations that can cause the reduction of the separator efficiency, separator overflow, carry out of liquid by the gas stream, and other serious problems. Among the techniques used to attenuate foams in crude production, the injection of chemical additives is still considered one of the most efficient. However, the effectiveness of a foam control agent (FCA) is limited to …
Published in Journal of Petroleum Engineering & Technology · Vol. 13, Issue 3, 2023 · pp. 13–23 Read article
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Design, Deployment and Implementation of Local Area Network (LAN) at BAEC Headquarters
Abstract: A local area network (LAN) is a computer network within a small geographical area such as a home, school, computer laboratory, office building or group of buildings. A LAN is composed of interconnected workstations and personal computers which are each capable of accessing and sharing data and devices, such as printers, scanners and data storage devices, anywhere on the LAN. LANs are characterized by higher communication and data transfer rates …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 8, Issue 1, 2021 · pp. 14–20 Read article
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Characterization of Low Power-Low Jitter Digital PLL
Abstract: The architecture design is being done in transistor level and tool which supports transistor level design. Mentor Graphics Tool is used for transistor level design and its simulation design. There are few tools which support design simulation like HSpice, Spectre and PSpice. Also a foundry support is from Taiwan Semiconductor Manufacturing Corporation (TSMC) (i.e.) technology model files 180 nm from TSMC for simulation. This article presents design for 1.5 GHz …
Published in Journal of VLSI Design Tools and Technology · Vol. 8, Issue 2, 2018 · pp. 23–32 Read article
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Design of Energy Efficient Clock System
Abstract: Energy efficiency is a key metric for energy constrained Ultra Low Power (ULP) VLSI applications such as wireless sensor nodes, pace makers, hearing aids etc. These applications need clock system in their signal processing and communication sub-system. Moreover, clock system plays a vital role in governing the reliability, power consumption and performance of synchronous system. In today’s era of portable electronics, power consumption has emerged as a forefront design metrics. …
Published in Journal of VLSI Design Tools and Technology · Vol. 9, Issue 2, 2019 · pp. 1–7 Read article
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Cardiovascular Image Segmentation in Computed Tomography Angiography ImagesUsing Deep Learning Approaches
Abstract: In present time, the cardiovascular disease is one of the common causes of mortality in human. In field of medical science, Heart angiography is one of the processes to testing of heart disease. Heart angiography identifies the abnormality in heart vessels. There are mainly two approaches to identify the heart disease. Former approach is the invasive and latter one is the non-invasive approaches. Invasive process is a painful diagnostic procedure …
Published in Recent Trends in Electronics Communication Systems · Vol. 10, Issue 1, 2023 · pp. 20–27 Read article
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Finding The Most Sensitive Nodes on IEEE-14 Bus System and Adaptation of Protection Scheme
Abstract: Power system stability is one of the most significant concerns in power system. Providing continuous supply of electric energy to meet the load demand is a complex technical challenge. One of the main causes of voltage instability in a system is the occurrence of reactive power imbalance in the system. Reactive power will be unbalanced when there is a sudden increase or decrease in reactive power demand in the system. …
Published in Trends in Electrical Engineering · Vol. 6, Issue 1, 2016 · pp. 50–56 Read article
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Sand Casting Process Optimization via Design of Experiments: A Review
Abstract: Designing and optimizing of gating is an essential part of casting foundry as it contributes significantly to predict and minimize the flow turbulence resulting to casting defects like rough surface, sand inclusion, etc. An Optimization scheme for gating design parameters for casting was proposed with different past studies of the researches. Various designs were modeled and mould filling simulation rooted to minimize turbulence and macro defects are recommended in this …
Published in Trends in Machine design · Vol. 4, Issue 3, 2017 · pp. 1–4 Read article
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Optimization of Continuous Cast Steel in Steel Manufacturing Industry
Abstract: Steel industry has given a wide exposure for the researchers, academicians and professionals to deal with even minute plethora and dots to come up with new innovations and creativity. In order to increase the affordability and accessibility, the continuous casting is optimized through various processes and levels. Optimization is required to be done on discovering a range of water flow rate, material properties, thermal heat transfer factors and oscillation parameters …
Published in Trends in Mechanical Engineering & Technology · Vol. 9, Issue 2, 2019 · pp. 7–11 Read article
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Performance Improvement of RoF & FSO based Hybrid Network using Multi Beam Transmission
Abstract: Radio over Fiber and Free Space Optics has become a popular technology to provide wireless data services to mobile users. But both have their own limitations when implemented separately. In this manuscript, we have proposed a multi beam transmission assisted hybrid network based on Radio over Fiber and Free Space Optics. It is revealed that by deploying multiple beams in the free space transmission, the data rate is enhanced by …
Published in Trends in Opto-electro & Optical Communication · Vol. 13, Issue 2, 2023 · pp. 1–6 Read article
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A Review Paper on Recent Cyberattacks and Proactive Steps to Prevent Attacks
Abstract: Cybersecurity stands out as a significant contemporary challenge in today's world. With today's technology, we can communicate any sort of data, whether it be an audio file, a PDF document, or a video, with just a single click. Therefore, protecting information is crucial in the sphere of cyber security. As the globe becomes more and more connected to networks that may be used for conducting digital transactions, cyber security is …
Published in Journal of Computer Technology & Applications · Vol. 14, Issue 2, 2023 · pp. 46–51 Read article
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Securities Control in Ad Hoc Network on Scatternet
Abstract: This study presents and evaluates an ad hoc network formatting algorithm. The algorithm is discussed to feature the specifications of Bluetooth under a designed purpose, a limited range device with a host and numbers of connected devices wirelessly. There are many research and analyses done till today’s date for the selection of secured devices. Proposed solutions have been evaluated utilizing the Open Web Application Security Project (OWASP). Nowadays, Bluetooth is …
Published in Journal Of Network security · Vol. 10, Issue 2, 2022 · pp. 24–29 Read article
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Effect of Hijama Bil Shart (Wet Cupping Therapy) in Treatment of Waja‘ al-Zahr (Low Backache): A Randomized Standard Controlled Clinical Study
Abstract: Introduction: Low back pain (Waja‘ al-Zahr) is one of the common musculoskeletal problems. It affects 80% population and accounts for considerable health care and profound economic burden. Disabilities in activities of daily living are common due to low back pain. Despite advancement in medicine, the standard conventional treatment often fails to achieve optimal results. Unani physicians recommended various modes of treatment to manage musculoskeletal disorders through intervention of specific regimens …
Published in Journal of AYUSH: Ayurveda, Yoga, Unani, Siddha and Homeopathy · Vol. 10, Issue 2, 2021 · pp. 9–14 Read article
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Need of Standardization of Habb: A Unani Medicine
Abstract: Habb (pill) is a solid dosage form for oral administration of drugs in the human body. The present challenge for Unani scholars is to validate the claims made in the classical texts by applying scientific methodologies on this important dosage form. These claims need to be validated and the drugs need to be standardized on more precise scientific parameters. In order to have a good coordination between the quality of …
Published in Journal of AYUSH: Ayurveda, Yoga, Unani, Siddha and Homeopathy · Vol. 6, Issue 2, 2017 · pp. 37–45 Read article