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213 articles for “Mur”
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Synthesis, Characterization and Drug Delivery Application of Poly (Acid Fuchsin) Based Triblock Copolymer
Abstract: Synthesis, characterization and its drug delivery application of Poly (acid fuchsin) (PAF) was done under inert atmosphere. The (M0/I0) was maintained at 100. In order to increase the molecular weight and processability, it was block copolymerized with ε-caprolactone (CL) and tetrahydrofuran (THF) separately. The conductivity value of PAF was found to be decreased after the chemical conjugation with poly(ε-caprolctone) (PCL) and poly(tetrahydrofuran) (PTHF) blocks. Thus obtained triblock copolymer was subjected …
Published in Journal of Catalyst & Catalysis · Vol. 3, Issue 2, 2016 · pp. 33–43 Read article
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Experimental Investigation of Mechanical Properties of Hybrid Fiber (Basalt and Steel) Reinforced Concrete
Abstract: The paper reports experimental investigations on hybrid-reinforced concrete. The proportion of basalt fiber and steel fiber was 50% respectively of the total fiber taken as sample. Effect of fiber on various strengths of concrete is studied. Fiber content varied from 0 to 4% at an interval of 1% by weight of cement. Various considerations for investigation are compressive strength, flexural strength, split tensile and bond strength. Cube of size 150 …
Published in Journal of Construction Engineering, Technology & Management · Vol. 3, Issue 2, 2013 · pp. 5–10 Read article
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Revolutionizing Low Carbon Concrete: Innovations at the Nexus of Computational Science, Data Analytics, and Sustainable Technologies
Abstract: Concrete production accounts for 7% of global CO2 emissions necessitating low carbon innovations to curb exponential demand threatening climate commitments. This research reviews sustainable construction literature integrating computational simulations, big data infrastructure monitoring and alternative process redesign. Analysis reveals 30-50% reductions achievable through combined use of industrial ecologies, smarter sensing coordinated with ML optimization and novel binders like alkali-activated geopolymers. Rigorous LCA quantification verifies environmental superiority over conventional formulations. Case …
Published in Journal of Construction Engineering, Technology & Management · Vol. 13, Issue 3, 2023 · pp. 16–23 Read article
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Fuzzy Logic and Energy Model based Speed and Direct Torque Control of SVPWM Inverter Fed Induction Motor
Abstract: This paper presents speed and direct torque controllers based on fuzzy logic for a space-vector modulated pulse width modulated inverter fed induction motor. The direct torque control has been designed by decoupling the torque and flux based on the energy model of induction motor. The designed direct torque control system can be accomplished by using constant switching frequency with space vector modulated pulse-width modulated inverter. In order to control the …
Published in Journal of Control & Instrumentation · Vol. 5, Issue 1, 2014 · pp. 11–21 Read article
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Trend analysis of Normalized Difference Vegetation Index using Landsat Satellite data: Study from in and Gondar town, North West Ethiopia
Abstract: Abstract This current research study presents the change detection method for the study of Satellite image supported on Normalized Difference Vegetation Index (NDVI). NDVI utilizes the Multi-Spectral remote sensing data method to determine Vegetation Index, land cover classification, vegetation, water bodies, bush land, agricultural area, thick forest and thin forest with few bands grouping of the remote sensed data. Land resources are easily understood by calculating their Normalized Difference Vegetation …
Published in Journal of Control & Instrumentation · Vol. 10, Issue 3, 2019 · pp. 25–33 Read article
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Simulation of Robust Control System for Hydroelectric Power Plant
Abstract: In this study, the modelling of a typical hydroelectric power plant with a high-water head and a long penstock is developed and implemented in MATLAB/Simulink. The proposed simulation system's models are created in a sophisticated way to allow for easy reuse. To compute and simulate hydraulic transients, the nonlinear properties of the hydraulic turbine, such as the elasticity of the penstock and the water hammer effect, were taken into account. …
Published in Journal of Control & Instrumentation · Vol. 13, Issue 3, 2022 · pp. 37–50 Read article
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FDTD-based Time Domain Analysis of CMOS Gate Driven Interconnects
Abstract: Accurate time domain analysis of CMOS gate driven interconnects is important for the design and analysis of high performance VLSI systems. Conventionally, CMOS driver is approximated as a constant resistance instead of non-linear and time-varying MOS resistance, which causes inaccurate modeling of CMOS driver. This paper presents a new method for FDTD-based transient analysis of CMOS gate driven interconnect line using a generalized model. The generalized model of CMOS inverter …
Published in Journal of Electronic Design Technology · Vol. 5, Issue 1, 2014 · pp. 16–21 Read article
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Development of an Intelligent and Statistical Model for Prediction of Rock Mass Deformation Modulus
Abstract: The rock mass deformation modulus (Em) takes into account the plastic and the elastic deformation of the rock mass. It has been widely used for designing structures such as dams, tunnels, caverns, and mines, etc. Since the tests available for ascertaining Em are expensive and time consuming, several equations were suggested in the past. However, it has been found that the existing models are limited to specific type of rock …
Published in Journal of Geotechnical Engineering · Vol. 6, Issue 2, 2019 · pp. 39–50 Read article
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A Review on Stabilization of Black Cotton Soil by using Different Admixtures
Abstract: The black cotton soil issues led to structural and geotechnical engineering challenges all over the world. It shows the deviation in volume change behavior due to climatic conditions that causes distress in the structural devious of foundations and damage of building structures, road pavements because of its low strength and high expansion. Considerable research is taking place to find the effect of expansive soil. The following article shows the different …
Published in Journal of Geotechnical Engineering · Vol. 8, Issue 3, 2021 · pp. 32–43 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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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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Precision Agriculture Revolution: A Low-cost Smart Irrigation System Empowered by IoT for Small-scale Farmers
Abstract: Precision agriculture powered by Internet of Things (IoT) is transforming traditional farming practices for improved crop yield and sustainability. This paper presents the architecture, implementation and testing of a low-cost smart irrigation system aimed at optimal utilization of water resources for small-scale farmers. The automated system monitors a suite of sensors that provide field data such as soil moisture, temperature, humidity. An intelligent controller processes this information to operate water …
Published in Journal of Mechatronics and Automation · Vol. 10, Issue 3, 2023 · pp. 21–29 Read article
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Split Ring Resonator Based Dual Frequency Microstrip Patch Antenna For Wireless Applications
Abstract: The objective of the work is to design a compact dual frequency microstrip antenna (MSA) at GSM 1800 MHz and ISM (2.4 GHz). The proposed MSA incorporates a rectangular patch with an inverted U slot printed on the top of RT duroid 5880 substrate with thickness of 0.8mm and dielectric constant of 2.2. The dimensions of the patch are optimized as 45x 54 mm2. It is fed by coaxial feeding. …
Published in Journal of Microwave Engineering and Technologies · Vol. 9, Issue 2, 2022 · pp. 1–14 Read article
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Two-dimensional Finite Element Analysis of Bolted Flanged Joints
Abstract: A 2D axisymmetric finite element analysis of flanges has been carried out using ANSYS 7.1 version. The analysis consider gasket as a rigid material for contact analysis and the others where the gasket has been considered as a gasket element. The non-linear behaviour with two unloading curves was used to predict the non-linear behaviour. This paper attempts to study and compare the contact pressure, gap, gasket stress and gasket total …
Published in Journal of Materials & Metallurgical Engineering · Vol. 6, Issue 1, 2016 · pp. 60–65 Read article
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Analysis of Friction Stir Welded Aluminum Alloys 2014 and 8011
Abstract: In this work we investigated friction stir welding of Aluminum Alloy 2014, Aluminum Alloy 8011. The major defects occurring while friction stir welding are tunnel effect, poor tensile strength, uneven material flow. The main causes for these defects are improper selection of welding parameters. The major welding parameters considered in Friction stir welding are spindle rotational speed (rpm), tool travel speed (mm/min) and tool angle (degree).In this work steps are …
Published in Journal of Materials & Metallurgical Engineering · Vol. 5, Issue 1, 2015 · pp. 12–17 Read article
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Optimization of Wear and Friction Parameters of Al-WC Composite Using Response Surface Methodology
Abstract: This paper aims to optimize the wear and friction parameters of Al-WC composite using response surface methodology. Initially dry sliding wear test on specimen of Al-0WC, Al-5WC, Al-8WC and Al-11WC composites were performed using pin-on-disc equipment under atmospheric conditions, with the varying parameters of the applied load 80KN and Sliding distance 6700m and the sliding velocity is kept constant of 3.34 m/s. The optimum parameters of wear mass loss and …
Published in Journal of Materials & Metallurgical Engineering · Vol. 9, Issue 3, 2019 · pp. 17–26 Read article
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Three-stage Decimation Filter Design with CIC and FIR Filters: A Review
Abstract: In this paper the design of decimation filter with three stages are considered and presented using the FDA tool of MATLAB. The decimation filter reduces the sampling rate of the signal while preserving the required data. The single stage filter is very difficult to implement because it requires more coefficients which results in bad frequency response so three stages of filters are considered, and further decimation is done. In filter …
Published in Journal of Nuclear Engineering & Technology · Vol. 13, Issue 1, 2023 · pp. 30–36 Read article
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Application of Bloch Analysis to Evaluate Activation of Energy of Irradiated Polyacrylonitrile
Abstract: AbstractPolyacrylonitile is one of the important polymers of technical and scientific importance. During its usage, the polymer is exposed to different types of radiations, limiting its use. In order to investigate the processes involved in radiation effect in PAN, various efforts have been made. In this context, the authors have also made an attempt to investigate radiation induced process in PAN by electron spin resonance (ESR) technique. ESR spectra of …
Published in Journal of Polymer & Composites · Vol. 4, Issue 2, 2016 · pp. 25–28 Read article
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Taguchi Analysis of the Thrust Force and Delamination in Drilling of Glass Fiber Reinforced Epoxy/Clay Nanocomposites
Abstract: AbstractComposites are replacing several materials due to their superior properties such as high strength to weight ratio, high stiffness to weight ratio, better impact characteristics, corrosion resistance and design flexibility. Drilling is often required to facilitate the assembly of the parts to get the final product. However, drilling induced damage affects the quality of the drilled components. The present investigation is an attempt to study the effect of the cutting …
Published in Journal of Polymer & Composites · Vol. 2, Issue 2, 2023 · pp. 14–23 Read article
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Parametric Study of Twin Screw Extrusion for Processing Epoxy/Carbon Black Nanocomposites Using Orthogonal Array Technique
Abstract: AbstractThis paper presents the experimental investigation of the influence of process parameters of twin screw extrusion on the dispersion and electrical, thermal and mechanical properties of epoxy/CB nanocomposites. Four factors, namely, loading level of carbon black (0, 2, 4, 6, 8 and 10 wt%) in epoxy, screw speed (75, 100 and 125 rpm), temperature (5 °, 15 ° and 30 °C) and number of passes (5, 10 and 15) were …
Published in Journal of Polymer & Composites · Vol. 1, Issue 2, 2013 · pp. 15–26 Read article