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1971 articles for “Macrotermes sp” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Nanostructured Cr-WS2 Solid Lubricant Coating for Space Applications
Abstract: Abstract Tungsten disulphide (WS2) is one of the widely used intrinsic low friction materials, which is commonly used in the form of coating. WS2 offers very low coefficient of friction only in non humid conditions. Presence of humidity destroys this property and restricts its utility. Modifying the structure of WS2 by adding certain metals helps in overcoming this limitation and in addition improves the mechanical properties. Further, deposition technique and …
Published in Journal of Instrumentation Technology & Innovations · Vol. 9, Issue 1, 2019 · pp. 12–18 Read article
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Design & Development a SPM for cutting operation: A case study on power switch assembly
Abstract: Automation is used to improve the productivity in majority of the industries. It helps in reducing the human intervention and improves a quality lot. Assembly process along with the manufacturing of each part needs to be studied, to automate the desire manufacturing processes. Here a case of power switch is investigated and analysis is carried out in terms of the automation strategy. Each process is analyzed by parameters like efficiency, …
Published in Journal of Mechatronics and Automation · Vol. 5, Issue 2, 2018 · pp. 7–17 Read article
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Investigation on Spar Platform for Low Capacity Vertical Axis Wind Turbine in Shallow Water Deployment
Abstract: In this paper, we discuss hydrodynamic analysis on the three different design of spar buoyancy platform utilize for floating vertical axis wind turbine. The major parameter like diameter of platform at cut water plane and length of spar buoyancy platform are selected as variable to carry out design of experiments. The systematic investigation is carried out to determine minimum ballast weight to ensure stability of floating platform under Pitch, Roll …
Published in Journal of Microcontroller Engineering and Applications · Vol. 7, Issue 3, 2020 · pp. 27–36 Read article
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Criticality Risk Assessment during Transportation and Storage of MTR Spent Fuel Elements
Abstract: Abstract This study aims to evaluate the criticality condition during transporting the spent fuel elements from the temporary storage to the permanent storage by using a Latin American cask. The cask was developed to transport the material testing reactor (MTR) fuel element type. MCNP5 code was used to calculate the criticality, expressed in terms of the neutron multiplication factor (k-effective), for normal and accidental situations using 21 fresh fuel elements. …
Published in Journal of Nuclear Engineering & Technology · Vol. 9, Issue 1, 2019 · pp. 1–6 Read article
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Influence of B2O3 and Li2O on Physical, Thermal and Spectroscopic properties of Bi2O3-B2O3-CdO-Li2O glass system
Abstract: ABSTRACT Bismuth Borate based glasses with compositions BiBCL: 40Bi2O3-(40-X) B2O3-20CdO-XLi2O where x=5,10,15,20,25 mol% were prepared by conventional melt quenching technique. X-ray diffraction (XRD), differential thermal analysis (DTA), UV-VIS absorption spectroscopy, Fourier transform-infrared (FTIR), and Raman spectroscopies were used to analyse the synthesized samples. Through XRD and SEM studies, the synthesized glasses amorphous nature was confirmed. To evaluate the physical and structural characteristics of the glasses, calculations were made for the …
Published in Journal of Polymer & Composites · Vol. 11, Issue 1, 2023 · pp. 51–62 Read article
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Speed Control of A Doubly Fed Induction Motor using Integral Plus Proportional Controller
Abstract: Conventionally, the speed control manipulate of Doubly-Fed Induction Motor (DFIM) has been developed primarily which is based on traditional Proportional-Plus-Integral (PI) controller due to its simple construction and implementation. The steady-state error minimization, overshoot removal and disturbance rejection are not possible in which the benefits of PI controller are chosen through trial and errors approach. The steady-state error and disturbance rejection may be viable, if the benefits of Proportional-Plus-Integral controller …
Published in Journal of Power Electronics and Power Systems · Vol. 7, Issue 3, 2017 · pp. 38–46 Read article
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Control of a Grid-Connected Variable Speed Permanent Magnet Synchronous Generator Based Wind Power Generation System
Abstract: Variable speed wind turbines are more efficient compared to their fixed speed counterparts since maximum power is extracted over a wide range of wind speeds. In this work a grid-connected wind power generation system is modeled and implemented in Matlab/Simulink using a permanent magnet synchronous generator. A back to back space vector pulse width modulated voltage source converter converts the variable frequency generator currents and voltages into DC, then back …
Published in Journal of Power Electronics and Power Systems · Vol. 6, Issue 2, 2016 · pp. 8–24 Read article
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Analysis and Implementation of Carrier Based and Space Vector PWM Techniques on a Three-Phase Voltage Source Inverter
Abstract: This paper presents a comprehensive analysis of carrier based and space vector pulse width modulation (PWM) techniques on a two-level three-phase voltage source inverter (VSI). The results of simulations performed in Matlab/Simulink are compared to the results obtained from the implementation of the PWM schemes on an actual VSI whose PWM signals are generated using dSpace. The analysis of the inverter line to line voltages includes, a fast fourier transform …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 3, 2015 · pp. 125–139 Read article
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Dynamic Integration and Control of Fixed-Sp eed Wind Generation System with Multimachine System
Abstract: Since the average life of a wind generator is about 20 years, many of the wind systems will be employingconventional fixed-speed cage generators in spite of the superiority of the variable-speed devices. As theextent of wind integration continues to grow, the wind parks may need to be integrated with AC power grids.The integration to grids, particularly to weak ones, may give rise to transient conditions detrimental to boththe asynchronous as …
Published in Journal of Power Electronics and Power Systems · Vol. 1, Issue 1-2-3, 2011 · pp. 14–27 Read article
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Design and Simulation of Discrete Time Optimal Speed Control for an Induction Motor Taking Core Loss and Stray Load Losses into Account
Abstract: Generally, the core loss and stray load loss are neglected in the mathematical model of induction motor (IM) to design the decoupling torque and flux control strategy. In order to precisely control the torque and flux, core loss and stray load loss, which are generally neglected, should be considered in the mathematical model of IM to design the controller. Some of literatures have shown how the detuning can be done …
Published in Journal of Power Electronics and Power Systems · Vol. 4, Issue 3, 2014 · pp. 46–56 Read article
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Design and Fabrication of Automatic Pesticides Sprayer
Abstract: Farming is the heart of Indian culture .Agriculture sector largest Employment providing sector. The farmers comes under different levels according to their economic condition like small marginal medium and rich farmers. In large scale rural area farmers using manually operated instrument instead of new techniques. In addition to that spraying pesticides is also preliminary action taken by farmers to protect crop from insect diseases fungi and pests. Number of technologies …
Published in Journal of Production Research & Management · Vol. 10, Issue 2, 2020 · pp. 3–5 Read article
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Literature Review on Space Structure Connection
Abstract: AbstractThe performance of structural connections of all types has been the subject of intensive research during the last two decades. In connection system for the space structure, considering structural and geometrical requirements, many researches have provided different types and forms of connectors. Modern research from Luciano Mendes Bezerra, Cleirton André Silva de Freitas, William Taylor Matias, Yosiaki Nagato (increasing load capacity of end-flattened connections, 2009), Seyed Amin Mostafavian, Mohammad Reza …
Published in Journal of Structural Engineering and Management · Vol. 5, Issue 2, 2018 · pp. 1–8 Read article
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Analysis of Specially Configured Large Ferrocement Water Tank
Abstract: Ferrocement construction technology is quite popular throughout the world for a long time. Ferrocement, a thin element composite of cement concrete mortar, wire mesh with skeleton steel is used as a building construction as well as a repair material. In this work, a special configuration is selected with different bar arrangement used for supporting skeleton steel in a large ferrocement water tank. Welded wire mesh is used in this water …
Published in Journal of Structural Engineering and Management · Vol. 6, Issue 3, 2019 · pp. 12–19 Read article
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Comparative Study of PSC Spun Pole using Higher Grade Concrete without and with Discontinuous Glass Fiber
Abstract: This experimental study was carried out on the prestressed concrete spun pole of length 13 m with and without use of anti-crack discontinuous glass fiber in high-strength concrete. The pole is having outer diameter at top and bottom as 206 mm and 379 mm respectively. The pole is having thickness 50~55 mm. The investigations were done to study the effect of use of high dispersion discontinuous glass fiber on deflection …
Published in Journal of Structural Engineering and Management · Vol. 1, Issue 1, 2014 · pp. 1–6 Read article
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Current status of reinforced thermal spray coatings to increase corrosion resistance of boiler tube steels
Abstract: AbstractThermal barrier coatings are one of the best techniques to protect the metal surface from erosion corrosion attach. Aluminium and nickel based alloys are extensively used as thermal barrier coated materials with various techniques such as HVOF, APS etc. The techniques for applying the coatings gain their importance in thermal spray which results to get a layer deposited without affecting the properties of substrate material. Thermal spray coatings have been …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 5, Issue 3, 2018 · pp. 1–7 Read article
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Design of High-Speed and Low-Power Carry Skip Adder
Abstract: In this brief, we present a high speed and lower power consumption carry skip adder (CSKA) architecture compared with the conventional one. The increment of speed is attained by implementing concatenation and incrementation strategy to improve the efficiency of the conventional CSKA (Conv-CSKA) architecture. Instead of make use of multiplexer logic, the proposed architecture makes use of AND-OR-Invert (AOI) and OR-AND-Invert (OAI) combination gates for the carry skip logic. The …
Published in Journal of VLSI Design Tools and Technology · Vol. 6, Issue 3, 2016 · pp. 35–44 Read article
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Low-Offset High Speed CMOS Voltage Comparator using 180 nm Technology
Abstract: A low Off-Set high-speed two-stage dynamic comparator is presented in this paper. In this circuit, PMOS transistors are used at the input of the first and second stages of the comparator. At the evaluation phase, the second stage is activated after the first stage with a predetermined delay to achieve a controllable pre-amplifier gain. Also, the first stage is turned off after the delay to reduce overall power consumption. Simulation …
Published in Journal of VLSI Design Tools and Technology · Vol. 7, Issue 2, 2017 · pp. 21–27 Read article
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High Speed and Low Area Energy Efficient FPGA Implementation using RSD based Elliptic Curve Cryptography
Abstract: In this paper we will study high speed energy efficient FPGA implementation using redundant sign digit elliptic curve cryptography. In existing system to design processor with high area and low speed computation process so that we proposed to low area with high speed computation using Elliptical cryptography processor. Here we use redundant signed digit to reduce the overhead due to computations. For modular arithmetic operation for multiplication, we used Karatsuba-Ofman …
Published in Journal of VLSI Design Tools and Technology · Vol. 7, Issue 2, 2017 · pp. 45–50 Read article
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Single Bit Low-Power High-Speed Full Adder
Abstract: This paper presents a high-speed low-power full adder cells that lead to have a reduced power-delay product (PDP). A comparison against other full-adder structure as having low PDP, in terms of speed, power consumption and area of cells is carried out. This paper contains, a hybrid 1-bit full adder design employing both complementary metal-oxide semiconductor (CMOS) and transmission gate logic styles. First implemented was the design for 1 bit then …
Published in Journal of VLSI Design Tools and Technology · Vol. 7, Issue 2, 2017 · pp. 55–60 Read article
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Seismic Performance Evaluation for Flat Slabs under Different Types of Soil Condition by Response Spectrum Method
Abstract: The study investigates the seismic performance of various types of flat slabs under different soil conditions by response sepctrum method. The studied flat slab buildings are G+7 stroies special moment resisting frame—flat plate slab (Model 1), flat slab with peripheral beam (Model 2) and flat slab with drop panel (Model 3), whicharemodeled by ETABS v. 2016. The response spectrum analyses are performed according to BNBC 2017, considering seismic zone Dhaka …
Published in Recent Trends in Civil Engineering & Technology · Vol. 10, Issue 2, 2020 · pp. 23–29 Read article