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1951 articles for “and yielded a damage-estimation R² of 0.946” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Investigations on Piezoactuator-Based Active Vibration Isolation for Tool-Based Micromachining Applications
Abstract: Stacked piezoactuators are suitable actuators for active vibration isolation systems due to their high stiffness and fast response. However, they exhibit hysteresis nonlinearity between applied voltage and the resulting displacement. In this paper, Bouc-Wen model is used to model the hysteresis nonlinearity of stacked piezoactuator. The model parameters are estimated from the experimental voltage-displacement data of a stacked piezoactuator using “Trust-region nonlinear least square method” in MATLAB Simulink. The resulting …
Published in Journal of Mechatronics and Automation · Vol. 2, Issue 1, 2015 · pp. 41–49 Read article
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Wi-Fi Shaped Quad-band Microstrip Antenna for RF Energy Harvesting Applications
Abstract: AbstractIn this paper, author proposed a Wi-Fi shaped microstrip antenna for the RF energy harvesting applications. The proposed antenna is operating at the frequencies 0.9, 1.7, 1.9 & 2.4 GHz. The antenna radiates at the quad-band frequency having an application in GSM Band and Wi-Fi Bands. The antenna consists of four different strips which correspond to each frequency in the result. The co-axial probe is connected from the side of …
Published in Journal of Microwave Engineering and Technologies · Vol. 5, Issue 3, 2018 · pp. 11–19 Read article
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EFFECT OF Scandium and Zirconium ADDITIONS ON HARDNESS AND CORROSION RESISTANCE OF AA5083 Alloy
Abstract: This study investigates the hardness and corrosion resistance of modified AA5083. Stir casting with cold rolled condition was applied to prepare the four compositions, namely AA5083 alloy, modified AA5083 alloy with 0.2wt.%Sc-0.1wt.%Zr, modified AA5083 alloy with 0.4wt.%Sc-0.1wt.%Zr alloy, and modified AA5083 alloy with 0.6wt.%Sc-0.1wt.%Zr alloy. Alloying with Sc-Zr has a strong influence on the hardness of AA5083 alloy and corrosion resistance.
Published in Journal of Materials & Metallurgical Engineering · Vol. 9, Issue 1, 2019 · pp. 1–8 Read article
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Physical and Optical Properties of Gum Arabic Sugar doped
Abstract: In this paper a different amount of sugar (0.1, 0.2, 0.3grams) were added to four types of Gum Arabic, namely (hashab, talha, cacamot and neem), then carefully, thoughtfully and thoroughly their physical properties were studied using Ultraviolet-Visible Spectroscopy (UV-Vis) and Fourier Transformation Infrared Spectroscopy (FTIR) devices; referring to the experimental implications, it had been observed and monitored that, the value of energy gap was increasing accordingly, to doping affectedness, and …
Published in Journal of Materials & Metallurgical Engineering · Vol. 10, Issue 2, 2020 · pp. 38–50 Read article
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Analysis of Heavy Metal in Industrial Soil Through Atomic Absorption Spectroscopy and its Relationship with Some Soil Properties
Abstract: The disease of soil is a premise of peril to the strength of individuals at diverse stages as well as towns and urban areas. Overwhelming metals unconstrained as poisonous effluents from smelters are dumped into close by biological system and are connected with wellbeing danger. Modern industrialization is main root to release different overwhelming metals which spreads to the dirt as aero soils, particulate issue, residue, effluents and strong waste. …
Published in Journal of Materials & Metallurgical Engineering · Vol. 11, Issue 2, 2021 · pp. 29–37 Read article
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Effect Analysis of Different ETL Layer Thickness in Perovskite (CH3NH3PbI3) Solar Cell Using CuSCN as Hole Transport Layer
Abstract: Thickness of Electron Transport Layer (ETL) shows an important role in terms of stability and efficiency of perovskite solar cells. In this paper, numerical simulation and detailed modeling on perovskite solar cell was carried out using perovskite material such as methyl ammonium lead iodide (MAPbI3, MA= CH3NH3) at various thickness’s of ETL layer using the SCAPS tool. The electrical properties of the “MAPbI3 material” used as active layer for different …
Published in Journal of Microelectronics and Solid State Devices · Vol. 10, Issue 1, 2023 · pp. 1–7 Read article
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Moshinsky Transformation and Slater Integral Methods as Evaluation Tools for Overlap Probability in Six-Quark Bag
Abstract: A comparative study of Moshinsky transformation and Slater integral methods in successful calculation of Binding Energy of mirror hypernuclei pairs ( 6 He ~6 Li , 14 14 C ~ N ), using six-quark probability of nucleon-nucleon ( ( ) 6 0 q NN P r ) and nucleon-Λ hyperon ( ( ) 6 0 q N P r ). The contribution of direct and …
Published in Journal of Nuclear Engineering & Technology · Vol. 8, Issue 3, 2018 · pp. 1–11 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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Hazards of Power Production-A comparative study
Abstract: Nuclear energy has played a major role in reducing the world's use of oil for electricity generation over the past decades. Current estimates are that uranium resources will last some 400 to 500 years at the present rate of use. This resource base could, furthermore, last some 50 times longer if breeder reactors are introduced. Of the main energy sources, namely coal, hydro and nuclear, nuclear can be even considered …
Published in Journal of Nuclear Engineering & Technology · Vol. 11, Issue 1-2, 2021 · pp. 1–20 Read article
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Engineering Novel Blue Emissive Thiazolidinedione (TD) Poly Lactic Acid (PLA) Composite Thin Films for Bioplastic Scintillation
Abstract: In this article, we demonstrate luminescent properties of PLA blended with new 3-[2-(4-methylphenyl)-2-oxoethyl]-5-(thiophen-2-ylmethylidene)-1, 3-thiazolidine-2, 4-dione and 3-[2-(4-chlorophenyl)-2-oxoethyl]-5-(thiophen-2-ylmethylidene)-1, 3-thiazolidine-2, 4-dione (TD). This paper mainly aims at the preparation of intercalated thin films of PLA and TD. The formation of matrix-dopant composite films was confirmed by FTIR, SEM, TGA, DSC and XRD characterizations. This work really stands out from our previous work as TD has been better recognized as drug material in …
Published in Journal of Polymer & Composites · Vol. 8, Issue 3, 2020 · pp. 10–23 Read article
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Chemical and Electrocoagulation for Chromium (VI) Removal from Galvanic Effluents
Abstract: Industrial effluents usually contain 10 to 500 mg/l Cr(VI); that according to internationalenvironmental rules must be set at permissible levels before being discharged into the environment.The upper permitted levels of chromium are 0.5 mg/l for effluent discharge and 0.01 mg/l for drinkingwater respectively. Hexavalent chromium is a very toxic heavy metal moiety occurring in variousindustrial wastewaters, such as electroplating, anodizing, tanning and dyeing effluents. Industrialeffluents may contain hundreds of mg/l …
Published in Journal of Polymer & Composites · Vol. 9, Issue 1, 2021 · pp. 49–55 Read article
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Comparison of Bond Strengths of Nano and Microhybrid Flowable Composites for Orthodontic Bonding: An Invitro Study
Abstract: Introduction: When the orthodontic brackets are bonded to the etched enamel, the ideal orthodontic adhesive should have optimal bond strength and be able to withstand masticatory forces as well as orthodontic forces. At the same time, when the treatment is completed, the bracket should debond without causing any damage to the enamel. There have been many recent advances in composites in general and their applications in orthodontic use is questionable. …
Published in Journal of Polymer & Composites · Vol. 10, Issue 3, 2022 · pp. 1–8 Read article
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IMPACT OF HYDRATED LIME AND SBS ON HMA MOISTURE SUSCEPTIBILITY
Abstract: Abstract In recent years, many of the newly built asphalt and concrete roads in Baghdad and other Iraqi cities have broken down too soon. This has hurt the country's economy and public safety. One of the main reasons why these newly built roads break down is because of water damage. Leaking water weakens the bond between the aggregate and the asphalt, which makes it more likely that sidewalks will fall …
Published in Journal of Polymer & Composites · Vol. 11, Issue 2, 2023 · pp. 81–93 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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Design of a Process Plant for Dimethyl Ether Synthesis from Syngas Using Direct Method
Abstract: The search for alternative renewable and less polluting energy sources has gained prominence thus, there is an increasing interest in the use of Dimethyl Ether (DME) as a clean alternative fuel and raw material in the chemical industry. The simulation of a plant for the production of Dimethyl Ether from Syngas using direct synthesis method has been carried out in this work. The simulation was done using ASPEN HYSYS software. …
Published in Journal of Petroleum Engineering & Technology · Vol. 13, Issue 1, 2023 · pp. 44–59 Read article
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Investigation of the Effects of Solpawa SBR-X TM Doses on Total Petroleum Hydrocarbon in Loam Soil at Different Depths
Abstract: Laboratory trials of environmental remediation products bring the hope of inventing such products to reality for many of today’s intractable environmental pollution conditions, paving the way for the field trials and subsequent large-scale field application. This laboratory study was conducted as the first phase of a 2-tiered adaptive trials of Solpawa® Bioremediation System (Solpawa-SBX) funded by the Nigerian Content Development and Monitoring Board (NCDMB). The study investigated the effectiveness of …
Published in Journal of Petroleum Engineering & Technology · Vol. 13, Issue 1, 2023 · pp. 64–72 Read article
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Errors-in-Variables Model for Photovoltaic Cell
Abstract: AbstractThe contribution of solar energy to the world's total energy supply has grown significantly. Energy from the sun is the most abundant and freely available energy on the planet. So, the importance of modelling the photovoltaic cell also increased remarkably. Many models for photovoltaic cell had been proposed since the beginning of the solar energy exploitation. Electronic equivalent circuit models, first-principles models and empirical models are the different modelling techniques …
Published in Journal of Semiconductor Devices and Circuits · Vol. 6, Issue 3, 2019 · pp. 8–15 Read article
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ULTRAFAST LASERS AND ITS USE IN ELECTRONICS INDUSTRY
Abstract: The size of semiconductors and packaged devices continues to shrink enabling the devices to become more compact . This trend requires the deployment of sophisticated equipments with inbuilt lasers that have unique capability to process diverse materials with high precision , but without damaging the electronic components due to heat . There are diverse laser technologies utilising longer pulse width or ultrashort pulse (USP) width that are employed in electronic …
Published in Journal of Semiconductor Devices and Circuits · Vol. 8, Issue 2, 2021 · pp. 34–45 Read article
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Progressive Collapse Prevention Analysis of Multi-Storeyed Buildings by Using Pushover Analysis
Abstract: AbstractThis paper investigates an actual structure’s potential to break due to progressive collapse. This report looks into the progressive collapse resistance of high-rise RC structures. Progressive collapse of building constructions, primarily concentrates on concrete structures. Progressive collapse of a structure occurs when major structural load carrying members are removed suddenly. A progressive collapse is initiated as a consequence of local structural damages. It produces a chain reaction mechanism, into a …
Published in Journal of Structural Engineering and Management · Vol. 4, Issue 3, 2017 · pp. 17–23 Read article
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Study of Trapezoidal Shaped Retaining Wall with Varying Geometric Parameters
Abstract: AbstractRetaining walls play a critical role in the protection of structures from damage related to soil collapse, but many property holders are unconscious of just how integral these walls are to the overall health of their property. Properly constructed and well maintained retaining walls not only mitigate soil erosion and wash-out after excavation, but also keep soil from collapsing. Soil collapse can put your structure at risk for damage and …
Published in Journal of Structural Engineering and Management · Vol. 5, Issue 2, 2018 · pp. 69–73 Read article