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1961 articles for “4” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Colour Removal from Effluents Using Micromaterials
Abstract: In this study, the ability of Micromaterials to adsorb color from an aqueous solution was investigated by using flocculants and activated carbon prepared from Rice Bran, an agricultural by-product, and batch mode adsorption experiments were conducted. The influence of various factors such as initial concentration (20, 40, 60, 80 mg/L), contact time, pH (4.0-9.0), and dosage on the adsorption capacity was investigated and optimal experimental conditions were ascertained. Adsorption data …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 2, Issue 1-3, 2012 · pp. 1–8 Read article
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Characterization and Optimization of Neem Leaves and Moringa Seed Husk-based Composite Activated Carbon for Efficient Adsorption of Methylene Blue Dye
Abstract: The research in question was meticulously conducted within the premises of the Nigerian Liquefied Gas (NLG) Engineering laboratory, situated at the esteemed University of Maiduguri, Nigeria. This study focuses on the development and characterization of a composite material derived from neem leaves (NL) and Moringa seed husk (MSH) to adsorb methylene blue (MB) dye effluent. The synthesis process involved pyrolyzing MSH and NL at 400°C to produce MSH and NL …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 13, Issue 3, 2023 · pp. 12–22 Read article
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Improvement of Soil Characteristics Using Waste (plastic, steel and wood)
Abstract: ABSTRACTSoil stabilization is the process of altering the engineering properties. Soil properties would be altered by adding waste like plastic from beverage bottles, steel dust and wood waste. In present scenario disposal of plastic waste has become a major issue because plastic materials can take many years (above 400 years) for its decomposition and may cause severe damage to environment and human health. The problem which was associated with plastic …
Published in Journal of Geotechnical Engineering · Vol. 4, Issue 3, 2017 · pp. 7–10 Read article
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Strength Studies of Fly Ash Stabilized with Lime and Gypsum
Abstract: An experimental study was conducted to investigate the performance of a composite derived from stabilizing fly ash with lime and gypsum. The initial part of the study examines the effect of lime (4%, 8%, and 12% by mass of dry fly ash) on compaction (in terms of density/moisture relationship) and unconfined compressive strength (UCS) of fly ash. Further the effect of adding small amount of gypsum (1%) on strength was …
Published in Journal of Geotechnical Engineering · Vol. 2, Issue 3, 2015 · pp. 10–16 Read article
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Bearing Capacity of Double Box Shaped Skirted Footings on Sand
Abstract: The double-box-shaped footing with and without skirt and sand-resting pressure settlement behavior was discussed in this paper. Different parameters are normalised skirt depth (0.25 to 1.5), relative sand density (30 to 60 percent) and sand footing interface state (partially rough and rough). Results of this study showed that a general and local shear failure was observed at a relative density of 50 percent and 60 percent, and 30 percent and …
Published in Journal of Geotechnical Engineering · Vol. 8, Issue 3, 2021 · pp. 10–19 Read article
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SAFETY CLIMATE AND SAFETY SYSTEMS FACTORS AND THEIR RELATIONSHIP WITH ORGANISATIONAL ATTRIBUTES AND DEMOGRAPHIC CHARACTERISTICS OF EMPLOYEES IN MAJOR ACCIDENT HAZARDOUS INDUSTRIES IN KARNATAKA STATE, INDIA
Abstract: The present work evaluates the existing critical safety climate and safety system components in the Major Hazardous Industries in Karnataka state, India and establishes the quantitative relationship between them with the organisational and demographic characteristics using a Questionnaire method (containing 81 questions of various safety climate parameters and 53 questions of various safety engineering system parameters among 1029 employees in 22 major hazardous industries in Karnataka). A research instrument using …
Published in Journal of Industrial Safety Engineering · Vol. 6, Issue 1, 2019 · pp. 20–35 Read article
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Corrosion Behavior of Welded Austenitic Stainless Steel in Different Environments
Abstract: Corrosion behavior of welded austenitic stainless steel in 0.5 M hydrochloric acid and wet-steam corrosive media has been studied. The immersion time in the corrosive media was 30 days to simulate the effect on stainless steel structures/equipment in offshore and food processing applications. Annealing heat treatment was carried out on the samples. The gravimetric technique was used for the corrosion tests. Seawater sample has highest weight loss of 4.0 mg …
Published in Journal of Industrial Safety Engineering · Vol. 1, Issue 3, 2014 · pp. 18–30 Read article
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Evaluation of the Impact of Organizational and Human Factors on Employee’s Behavior in a Petroleum Refinery
Abstract: According to the WHO, 2.9 billion workers worldwide are exposed to different hazards at workplace. Researchers have focused a lot of emphasizes on work-related illnesses, fatalities, and injuries, which has raised awareness of event causation in the workplace. It is speculated that workers' at-risk behaviors, which can be decreased through behavior modification, are what lead to the bulk of workrelated accidents. A study was conducted to analyze the organizational and …
Published in Journal of Industrial Safety Engineering · Vol. 9, Issue 2, 2022 · pp. 11–16 Read article
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Analysis of the Extent of Patients’ Rehabilitation from Knee Injuries or Surgery using Recovery Indices
Abstract: Many major knee surgeries or injuries have long rehabilitation periods, during which the patients may have abnormal gait cycles. The patient transitions to independent exercises performed at home, which are crucial to recovery. Doctors need to have a means to closely track patients exercises for proper recovery. This research utilizes statistical analysis tools, which is applied to analyze gait parameters of patients undergoing the rehabilitation process at different stages of …
Published in Journal of Mechatronics and Automation · Vol. 4, Issue 3, 2017 · pp. 27–40 Read article
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Seasonal Variation of Electric Vehicles Autonomy: Application to AC/DC Dual Voltage Operation
Abstract: In this work, a study to predict battery performance and autonomy for a dual type of electric engine, 480 VAC and 360 VDC, has been developed. The study has been conducted in vehicles of mass between 1000 and 3000 kg with battery capacity in the range of 40 to 100 kWh. The process has been simulated using reference values and modeled for specific driving conditions. The simulation has been developed …
Published in Journal of Mechatronics and Automation · Vol. 7, Issue 3, 2020 · pp. 1–15 Read article
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Development of Automated System for Facilitating the Movement of Differently Abled Persons
Abstract: There are numbers of people who suffer from partial paralysis (paresis) or other neurological strokes.The proposed work mainly focuses on physical therapy to improve the level of mobility of strokevictims. For helping neurologically damaged patients during therapy, an upper limb robotic orthoticis developed. The system consists of four servo motors which are used for pattern generation for thefour fingers with a crank-shaft mechanism attached, which converts their rotational motion intolinear …
Published in Journal of Mechatronics and Automation · Vol. 8, Issue 1, 2021 · pp. 20–27 Read article
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Investigation on Open Loop Position Control of Amplified Piezoactuator
Abstract: Amplified piezoelectric actuators (APAs) consist of stacked piezoelectric actuators inside a flexural mechanical amplifier which helps in amplifying the displacements of the piezostacks in static and dynamic conditions. Accounting for their precision movement and dynamic characteristics, these actuators are extensively used in micropositioning, active damping, and microactuation applications. In this paper, FEM analysis of mechanical flexural amplifier of APA230L piezoactuator was performed to estimate its stiffness in the horizontal direction …
Published in Journal of Mechatronics and Automation · Vol. 2, Issue 1, 2015 · pp. 16–24 Read article
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Evaluation of J-Integral and Fatigue Crack Growth Rate of Semi-elliptical Crack in Compressor Blade
Abstract: Gas turbine compressor blades are subjected to centrifugal, gas bending and vibratory loads. This repeated loading and unloading can reduce the life of compressor blades. This research aims at the estimation of fatigue crack growth rate of various three-dimensional cracks in a compressor blade considering the J-integral calculations for a semi-elliptical crack, subjected to centrifugal loading. Static stress analysis was carried out to ascertain the critical region or crack zone …
Published in Journal of Mechatronics and Automation · Vol. 1, Issue 2, 2014 · pp. 39–46 Read article
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Analysis and Design of Microstrip Antenna for Applications in Energy Harvesting
Abstract: AbstractThis paper focuses on design and analysis of wide band antenna for the use of energy harvesting. The design parameter for achieving optimal operation of the antenna is also analyzed. The presented antenna design has been simulated by IE3D software which is suitable for wide band applications at resonant frequency 3.23 and 4.25 GHz.Keywords: Wireless communication, LC filter, RF power, Schottky diodeCite this ArticleHira Sultan, Neha Sen, Vinod Kumar Singh, …
Published in Journal of Microwave Engineering and Technologies · Vol. 4, Issue 3, 2017 · pp. 1–4 Read article
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Textile Antenna with Partial Ground for Multiband Applications
Abstract: AbstractIn this article, the dominant textile antenna is presented. The proposed antenna has various applications like satellite communication, military and medical applications. The proposed antenna gives dual frequency bands with bandwidth from 8.96 to 14.456 GHz with 46.73% and second band from 14.98 to 17.46 GHz with 15.289. The intended textile antenna is applicable for wireless communication systems as it has wide dual bandwidth and high directivity of 6.379 dBi.Keywords: …
Published in Journal of Microwave Engineering and Technologies · Vol. 4, Issue 3, 2017 · pp. 15–18 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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An Extended Semi-circular Microstrip Patch Antenna with DGS for UWB Applications
Abstract: This paper presents the design of a semicircular patch with an extended length for UWB applications. The proposed antenna is fabricated on FR4 substrate with relative permittivity of =4.4 and dimensions of 29.5x38x1.57 . The feed used in proposed design is 50 Ω microstrip feed line. The partial ground structure with a T-shaped slot and dual right angled isosceles triangular notches of side 3 mm each has been introduced to …
Published in Journal of Microwave Engineering and Technologies · Vol. 4, Issue 1, 2017 · pp. 13–18 Read article
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Design of Ultra-Wide Band Slotted PIFA for Wireless Devices
Abstract: The design of an ultra-wideband planar inverted-F antenna (PIFA) is proposed for mobile phone applications in this paper. The different slots are introduced on radiating patch and ground plane. The volume of the radiating antenna is 40x40x3.5 mm3 which is small as compared to reported work. The ultra-wide bandwidth with acceptable return loss –6 dB is obtained from 4.6 to 30 GHz with good matching and radiation characteristics. Different performance …
Published in Journal of Microwave Engineering and Technologies · Vol. 3, Issue 2, 2016 · pp. 1–6 Read article
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N-Shape Dielectric Resonator Antenna for Wireless Communication
Abstract: A new compact dielectric resonator antenna (DRA) for ultra-wideband (UWB) is presented and studied. This antenna is designed on FR4 substrate with dielectric constant of and overall size of proposed DR antenna is 20×35 mm2. The dielectric resonator of N-shape is only of 5.12 mm thickness and has a very low permittivity constant (10.2). The simulated DR antenna operating from 4.4 to 11.7 GHz covers most of the existing wireless …
Published in Journal of Microwave Engineering and Technologies · Vol. 3, Issue 2, 2016 · pp. 13–18 Read article
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Simulation and Analysis of S-CSRR PIFA for C-band 5G wireless networks
Abstract: In this paper, S-CSRR (Square-Complementary Split Ring Resonator) Planar Inverted F Antenna model is designed and simulated in the HFSS software. For compact and portable devices being preferred in 5G technology, the proposed antenna is helpful. The PIFA antenna with metamaterials (MTM) is beneficial for 4G and 5G wireless communication applications and covers C-band frequencies. The C-band frequency range of 3300-4200 MHz and 4400-5000 MHz is used in the research. …
Published in Journal of Microwave Engineering and Technologies · Vol. 9, Issue 2, 2022 · pp. 15–25 Read article