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1360 articles for “lay-up”
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Working Principles and Performance Analysis of IEEE 802.11 and Sensor S-MAC
Abstract: Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 Wireless sensor network (WSN) is a wireless network consisting of spatially distributed autonomous devices which use large amount of energy, consuming battery-powered sensors to monitor physical or environmental conditions. Medium access control (MAC) protocols play a big role to reduce energy consumption in WSN. Designing power-efficient MAC protocol prolongs the life time of the network, can consume little power, and avoid …
Published in Current Trends in Information Technology · Vol. 5, Issue 3, 2015 · pp. 39–47 Read article
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Park Information System for Kolkata: A Low Cost Web Enabled Solution
Abstract: Green parks in urban environment play an important role in promoting public health, art, culture, tourism and economy. City dwellers require information about the parks to get the benefit of green spaces. Web GIS technology has a potential to maintain inventory and disseminate spatial and aspatial information over the Internet. Open source software enables cost effective and feature rich implementation, operation and maintenance of Web GIS application. In this study …
Published in Current Trends in Information Technology · Vol. 6, Issue 1, 2016 · pp. 35–39 Read article
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Lossless and Reversible Data Hiding in Encrypted Images with Public Key Cryptography
Abstract: In this paper, system uses the cryptography and steganography concept, which proposes a lossless, reversible, and combined data hiding methods for images encrypted by public key cryptosystems with probabilistic and homomorphic properties. In the lossless method, pixels of encrypted images are replaced with new values to embed additional data into LSB-planes of ciphertext pixels by multiple layer wet paper coding. Thus, original data can be directly extracted from encrypted image, …
Published in Current Trends in Information Technology · Vol. 6, Issue 2, 2016 · pp. 27–33 Read article
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Group Management for Secure and Dynamic Sharing of Data in Cloud Computing
Abstract: Cloud computing has emerged as new model of computing which allows outsourcing data. The phenomenon of outsourcing data to cloud became obvious as cloud has infrastructure as a service (IaaS) layer for it. With this feature of cloud, there is growing trend in outsourcing data to cloud. When an enterprise outsources its data to cloud, it needs to take care of its functionalities in terms of data sharing across its …
Published in Current Trends in Information Technology · Vol. 6, Issue 3, 2016 · pp. 16–23 Read article
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Stabilizing Hydrodynamic Bearing Using H∞ Loop Shaping Design Procedure
Abstract: This paper proposes the idea of H∞ loop shaping to design an active stabilizing controller for short journal bearing. Hydrodynamic bearings have viscous friction and stiffness force associated with fluid film layer sheared during the motion of bearing; at high speed, they can land up too wide and considerable heat is generated. As a result instability occurs, thus working inefficiently that can be the cause of material damage and also …
Published in Journal of Instrumentation Technology & Innovations · Vol. 6, Issue 3, 2016 · pp. 8–13 Read article
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Analysis of Pressurized Water Reactor Fuel Rod Using Nano Fluid
Abstract: The project aims at analysing the flow through a PWR Nuclear Fuel Rod. In this analysis, fuel rod is simulated using ANSYSCFX 14. Fuel Rod is simulated along with the Spacer Grid. The project aims at studying the behaviour of nano fluids under laminar flow conditions and its application as Nuclear reactor coolants. The properties of two nano fluids have been studied-Al2O3 and CuO with water as base fluid. Their …
Published in Journal of Nuclear Engineering & Technology · Vol. 5, Issue 3, 2015 · pp. 14–25 Read article
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Structural Optimisation of Offshore Wind turbine structures: A Review
Abstract: AbstractStructural optimization of offshore wind turbines is very tough task due to complexity of the problem. The present paper reviews offshore wind turbine structures, one of the more popular forms of renewable energy, including attractions and challenges of electric power generation through onshore and offshore resources. Offshore wind-power generation presents many engineering challenges including: limited guidelines available for analysis and design of foundation/support structures; inadequate logistics for construction/fabrication; and comparatively …
Published in Journal of Offshore Structure and Technology · Vol. 4, Issue 3, 2017 · pp. 35–40 Read article
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STRUCTURAL DESIGN ANALYSIS OF FPSO HULL TOPSIDE INTERFACE
Abstract: This paper aims to address the structural challenges in conjunction with the design and analysis of topside module support structures for installation on Floating Production Storage and Offloading (FPSO) vessel. The most common topsides foundation concepts applied on FPSOs are identified, and discusses the consequences of each configuration for the layout of the unit in associated with the design of the hull structure and the topsides. Further, the information needed …
Published in Journal of Offshore Structure and Technology · Vol. 5, Issue 3, 2018 · pp. 27–35 Read article
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Study and Comparison of Mechanical and Thermal Resisting Property of Composite Materials Reinforced Using Natural Fibers and Filler Material as Ash
Abstract: Composite in composite material means, two or more materials combined on a macroscopic scale to form a useful material. The advantage of composite is, they exhibit the best qualities of their constituents and also some qualities that neither constituent possesses. These properties make advanced composites extremely attractive and purposeful in situations where component weight is critical. Fibers from natural and man-made sources are used to make composites. The following experiment …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 6, Issue 2, 2019 · pp. 32–38 Read article
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A Study of Nature Based Dye with Different Extracting Solvents as a Sensitizer for Dye-Sensitized Solar Cells
Abstract: In this paper, natural dye extracts were used as a sensitizer for Dye Sensitized Solar Cell (DSSC). The natural dye was extracted from Lantana camara leaf, flower and Clitoria ternatea flower using ethanol and acidified ethanol (in 1% HCl) as extracting solvent. The DSSCs have been fabricated using pure TiO2 and Ni doped TiO2 layers as photoanodes deposited by Doctor Blade method on fluorine doped Tin Oxide (FTO) glass substrate …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 8, Issue 3, 2018 · pp. 69–73 Read article
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PERFORMANCE AND EMISSION ANALYSIS OF RAPESEED METHYL ESTER BLENDS AS ALTERNATE FUEL FOR DIESEL ENGINE APPLICATIONS
Abstract: Air pollution at sea is due to exhaust emissions from the marine diesel engines of cargo ships, tugs, passenger and patrolling vessels, and motorboats. The emissions from marine engines cause human health hazards like cancer in the lungs, cardio problems, effects the healthy environment, ozone layer depletion and global warming. Rapeseed methyl ester (RME) blends with diesel fuel is one of the best alternate fuels to reduce the exhaust emissions …
Published in Journal of Offshore Structure and Technology · Vol. 6, Issue 3, 2019 · pp. 14–22 Read article
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Synthesis, Characterization of MoS2 Nanosheets, Amorphous Carbon Nanotube (ACNT) and ACNT-MoS2 Nanohybrids: A Comparative Research Analysis
Abstract: The superior properties of graphene and its applications in several fields like sensor, electronics, etc have inspired the researchers to concentrate on other 2D material and their hybrids. Among them, MoS2 nanosheets has gain research interest due to its amazing electronic, optical and physical properties. Due to all these properties, MoS2 nanosheets are used in numerous applications such as catalysis, photo emitting diode, double layer capacitors, lithium-ion batteries, etc. Here, …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 9, Issue 3, 2019 · pp. 27–36 Read article
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Synthesis and Dielectric Properties of CaCu3Ti4O12 Doped with La3+
Abstract: The effect La3+ doping on the structural and dielectric properties of CaCu3Ti4O12 (CCTO) is investigated, resulting in a compound of the type Ca1-xLaxCu3Ti4O12 (x = 0.00, 0.20 and 0.50). The compounds have been prepared by conventional solid state reaction. The Ca1-xLaxCu3Ti4O12 ceramics were characterized by X-ray diffraction, SEM techniques. The grain size and the grain boundary resistivity increased with the increase of doping percentages. Dielectric constant of the samples decreases …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 9, Issue 3, 2019 · pp. 22–26 Read article
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Research Paper on Design and Development of Agricultural Polyhouse Cooler for Temperature Control During Summer
Abstract: During the summer season or during hot climates, the plant in the polyhouse or greenhouse needs the controlled temperatures for their optimum growth. If the temperature exceeds the required temperature, it starts damaging the newly springs of buds of plants affecting their productivity. There’s not only the temperature that should be controlled. Polyhouse plants are also affected by the relative humidity. And managing both at the same time is not …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 8, Issue 1, 2021 · pp. 21–25 Read article
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A Review on Thermodynamic Analysis of thermal Heat Dissipating Fins
Abstract: The Engine chamber is one of the essential motor components, that is exposed to extreme temperature varieties and thermal burdens. Balances are set on the outer layer of the chamber to improve the measure of Heat & mass transfer by convection. For thermal investigation of the motor chamber blades, it is more gainful to know the Heat & mass transfer dissemination inside the chamber. Present review has been done to …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 8, Issue 2, 2021 · pp. 13–21 Read article
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A Study on Harbour Siltation and Dredging in Vizhinjam Port Using a Numerical Modeling Tool
Abstract: This paper tries to study the harbour siltation in the proposed Vizhinjam port using a numerical modeling tool (Delft3D). Secondary data collection has been carried out from various sources for obtaining Oceanographic and bathymetric data and used in this study. The simulation results were calibrated using the measured current and tide. From the wave coupled simulation results it is found that waves have very less influence in the siltation of …
Published in Journal of Offshore Structure and Technology · Vol. 7, Issue 3, 2020 · pp. 46–64 Read article
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Nanotechnology's Frontier: Exploring the Interplay of Structure, Function, and Applications in the Modern Age of Enzymes"
Abstract: This study delves into the dynamic intersection of nanotechnology and enzymes, unravelling theprofound implications of their interplay on structure, function, and applications in the contemporary era. The introduction provides a contextual backdrop, elucidating the significance of nanotechnology in the modern landscape. As the narrative unfolds, it navigates through the intricacies of enzyme structures and the transformative influence exerted by nanotechnology. The discussion extends to the functional enhancements achieved at the …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 13, Issue 3, 2023 · pp. 29–41 Read article
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Enhancing the Efficiency of Subthreshold Nanoscale MOSFETs for IoT Applications.
Abstract: In the contemporary landscape of the Internet of Things (IoT), this study focuses on the design and optimization of underlap Silicon-on-Insulator Metal-Oxide-Semiconductor Field-Effect Transistors (SOI MOSFETs) tailored for real-time IoT applications. Employing an optimal spacer size (approximately 0.8 times the gate length, or LG), the device exhibits, at an operational frequency of20 GHz, an intrinsic gain of about 25 dB in the low to moderate inversion region (VOD=VGS– VTH≤90 mV, …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 13, Issue 3, 2023 · pp. 1–7 Read article
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Cost and Quantity Comparative of DLCS and PCS Tower Structures in Conveyor Belt Systems
Abstract: This research paper focuses on the study of transfer tower structures in conveyor belt systems isrecently used in industries for the transfer material to one place to another place. These framedstructures facilitate the smooth transfer of bulk materials from one conveyor belt to another, ensuringa seamless flow throughout the system. Transfer towers serve as crucial junction points in materialconveying, accommodating various conveyor system geometries, orientations, and elevations. Theobjective of the …
Published in Journal of Offshore Structure and Technology · Vol. 10, Issue 2, 2023 · pp. 24–32 Read article
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3D Printing: Aircraft Turbojet Engine with PLA Material
Abstract: From the previous couple of decades most of the research is goes on the sunshine weight material on different applications like marine, aerospace, defense and industry. In this paper, 3D printing process is considered to manufacture jet engine with PLA (poly lactic acid) material. This 3D printing process, now a day’s mostly using in various applications likemedical, aerospace, defense etc., due to its quality of parts making with desired specifications …
Published in Journal of Aerospace Engineering & Technology · Vol. 10, Issue 1, 2020 · pp. 1–5 Read article