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480 articles for “LES”
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Renewable Energy Revolution: Hybrid PV and Wind Power Generation
Abstract: Considering connectivity is not economically viable nor supported by the key players, accessing the rural population without electricity is currently not conceivable through grid extension. Furthermore, conventional energy options, such as fuel-based systems, are gradually being dropped from the agendas for rural development due to the rise in oil costs and the intolerable effects of this energy source on both consumers and the environment. The most effective method to provide …
Published in International Journal of Power Electronics Controllers and Converters · Vol. 9, Issue 1, 2023 · pp. 1–7 Read article
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PV Penetrations in Conventional Power System and Generation of Harmonic and Power Quality Issues: A Review
Abstract: The degree of PV penetrations is a critical metric that assesses how well solar energy is integrated into the grid. It offers many advantages, such as lowering greenhouse gas emissions and enhancing grid reliability. It does, however, also bring some difficulties that call for careful preparation and financial outlays. It's obvious that solar energy will be crucial to our shift to a cleaner, more sustainable energy future given the rate …
Published in International Journal of Power Electronics Controllers and Converters · Vol. 9, Issue 2, 2023 · pp. 12–19 Read article
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Congestion Control in WDM Networks
Abstract: Because of enormous transmission of information through optical strands, congestion happened routinely and it turned into a major bottleneck to the stream of information in any procedure. Numerous techniques are there to keep away from congestion however those systems for the most part include colossal expense connected with quality certification. These systems are relevant to the zone which is rich in base and assets, however these procedures are extremely hard …
Published in International Journal of Telecommunications & Emerging Technologies · Vol. 2, Issue 2, 2016 · pp. 1–5 Read article
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Diffie–Hellman Key Exchange Protocols Enhanced
Abstract: ABSTRACT Conversation is the crucial element in any type of network for making it viable to transfer data from one node to another. Conversation needs first-rate and security for higher performance and for acceptance of users and customer organizations. Value is dependent on length and some different elements of network but protection is very concern parameter in network as it is independent of network size and complexity. Security has come …
Published in International Journal of Telecommunications & Emerging Technologies · Vol. 5, Issue 1, 2019 · pp. 1–5 Read article
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A Multiband Ultra Wideband Antenna for Wireless Applications
Abstract: ABSTRACTThis paper proposes a compact and low-priced antenna that operates in Ultra Wide Band (UWB) at X-band and C-band for short-range communication applications. The frequency band ranging 3.1 GHz to 10.6 GHz is allocated to ultra-wideband. The values of VSWR and return loss for this antenna are less than 1.5 and -10db respectively. The L shaped slot create a band at 10.022 GHz and the ring-shaped patch create bands at …
Published in International Journal of Telecommunications & Emerging Technologies · Vol. 6, Issue 1, 2020 · pp. 1–7 Read article
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Performance Enhancement of Mobile WiMAX using TimeFrequency Training OFDM Scheme
Abstract: ABSTRACT Mobile WiMAX, IEEE 802.16 m is a Wireless Metropolitan Area Network offering a mobile broadband internet service. It uses cyclic prefix OFDMA (CP-OFDMA) as a multiple access scheme. CP-OFDMA embeds a large number of pilot subcarriers in OFDMA symbol for channel estimation purpose, reducing the data rate and spectral efficiency of mobile WiMAX system. This paper suggests the application of time-frequency training OFDM (TFT –OFDM) as a modulation and …
Published in International Journal of Telecommunications & Emerging Technologies · Vol. 6, Issue 1, 2020 · pp. 20–31 Read article
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Printed Circuit Board (PCB) Design Techniques
Abstract: PCB stands for Printed Circuit Board which is a very essential part of electronic equipment. It serves as the foundation for many internal computer components. A large portion of these parts are little in size. It is near difficult to associate these segments together with wires without the guide of printed circuit sheets. It has large number of active and passive components embedded into it. On a Printed circuit board, …
Published in International Journal of Telecommunications & Emerging Technologies · Vol. 6, Issue 2, 2020 · pp. 33–40 Read article
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Spin Devices Based Area Efficient 5-Bit High Speed ADC
Abstract: This paper uses current induced domain wall motion in a magnetic stripe and pre-charge sense amplifiers (PCSA) to design a high-speed comparator of a magnetic flash ADC. Current-induced domain-wall (DW) motion is a prominent switching mechanism promising, low power high-density and high-speed circuits. Domain-wall motion in a magnetic stripe basedmagnetic flash ADC (Analog to Digital Converter) is area efficient (4.84μm2 ) and faster compared to other ADCs. Our proposed 5-bit …
Published in International Journal of Applied Nanotechnology · Vol. 7, Issue 2, 2021 · pp. 18–27 Read article
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Impact of Substrate Temperature on Chemically Deposited Cds Thin Films
Abstract: The interest for renewable energy sources are increasing day by day due to the limited availability of fossil fuel. Among all the renewable energy sources solar energy is growing interest due to its easy availability almost among all area of earth where people lives. Solar energy can be used as a source of energy by two ways: Solar Photovoltaic Cell and Solar thermal. Photovoltaic cells are the easiest way for …
Published in International Journal of Energetic Materials · Vol. 1, Issue 1, 2015 · pp. 22–26 Read article
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Low-graded coals to upgrade
Abstract: Coal can be defined as a chemically and physically heterogenous, “combustible”, sedimentary rock consisting of both organic and inorganic materials. Organically, coal consists primarily of carbon, hydrogen, and oxygen, with lesser amounts of sulphur and nitrogen. Inorganically, coal consists of a range of ash-forming compounds distributed throughout coal. Major types of analysis are proximate analysis, ultimate analysis and calorific value analysis. Heat value or calorific value determines energy content of …
Published in International Journal of Energetic Materials · Vol. 5, Issue 2, 2019 · pp. 42–60 Read article
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Performance Evaluation of the Power Cartridge in the Closed Vessel for Water-Jet Application
Abstract: The power cartridges are generally called as gas generator devices utilized in disruptor system to generate a high velocity water jet. This high velocity water-jet helps in the damage of suspected improvised explosive devices (IEDs). The closed vessel (CV) methodology for performance evaluation in respect of the power cartridge is explained in this research paper. To determine the performance, the CV is fabricated. The gas pressure generated by the power …
Published in International Journal of Energetic Materials · Vol. 7, Issue 1, 2021 · pp. 1–12 Read article
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Mathematically Modeling of PV-Wind Hybrid System
Abstract: The study of hybrid (Photovoltaic and wind) generation is used system which is consist of 1 kW wind and 1 kW PV. The solar radiation data and wind data of the School of energy Environmental studies from D.A.V.V Indore are analyzed for sizing of the renewable energy system. The output power of a wind turbine at a specific location depends on many factors, the amount of available energy increases with …
Published in International Journal of Energetic Materials · Vol. 8, Issue 2, 2022 · pp. 10–17 Read article
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Characterization and Wear Behavior of TiN, TiAlN, TiCrN and AlCrN PVD Coatings Deposited onto AISI H13 Hot Forging Die Steel
Abstract: Four Nitride coatings TiN, TiAlN, TiCrN and AlCrN were deposited onto AISI H13 hot work die steel by cathodic arc evaporation physical vapour deposition (PVD) technique. The coatings were characterized by SEM, SEM-EDS, XRD, line scan EDS and X-Ray mapping tests and micro hardness tester. The wear characteristics were investigated using a pin on disc method at high temperature and speed against En-31 bearing steel disc. It was observed that …
Published in International Journal of Metallurgy and Alloys · Vol. 4, Issue 2, 2018 · pp. 1–11 Read article
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INVESTIGATIONAL STUDIES ON MECHANICAL PROPERTIES FOR FRPS COMPOSITES
Abstract: The fibre reinforced composite materials consists of fibres of significant stiffness and strength embedded in a matrix with distinct boundaries between them and these materials had better mechanical properties when compared to normal metals which are thought as better substitutes to metals and add strength and reduces weight of a given system.The strength of FRPSS varies basing on its constituents and composition of constituents. In marine field where high strength …
Published in International Journal of Metallurgy and Alloys · Vol. 6, Issue 1, 2020 · pp. 1–6 Read article
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Ability of Metallic Materials to Resist Surface Damage Induced by High-temperature Action of Air or other Gaseous Mediums
Abstract: The features of the oxide layer scale that forms on the metal's surface and limits gas penetration into the metal, limiting the growth of gaseous corrosion, influence a metal's or alloy's oxidation resistance in an oxidising atmosphere. The rise in weight of sample being tested (due to oxygen uptake by the metal) or even the weight loss after removing the scale from the sample's surface, related to a unit surface …
Published in International Journal of Metallurgy and Alloys · Vol. 8, Issue 1, 2022 · pp. 16–21 Read article
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Adverse Effects of Copper Extraction on the Environment and Living Things
Abstract: The extraction procedures are known as heap and situ leaching; throughout these procedures, particles react with one another to produce acidic mists that not only hurt people’s skin, eyes, and lungs but also ruin crops, degrade the quality of the land, and injure surrounding structures. It tastes awful and stinks like acid dust. The ore typically needs to be beneficiated as with all mining processes. The methods of processing are …
Published in International Journal of Metallurgy and Alloys · Vol. 8, Issue 1, 2022 · pp. 10–15 Read article
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Ferromagnetism in II-VI Diluted Magnetic Semiconductor, Zn0.96Mn0.04O Nanostructures by Green’s Theorem
Abstract: Ferromagnetism in II-VI diluted magnetic semiconductor, Zn0.96Mn0.04O is studied. Using the Heisenberg principle, the spin exchange between the neighboring spin is discussed. Heisenberg’s model describes the Hamiltonian of the system in terms of spin density and excitons. Mathematically, magnetic parameters such as magnetizations and magnetic susceptibility are determined by Green’s function. Ferromagnetism is expected from sp-d exchange interactions (RKKY), point defects such as oxygen vacancies, and Zn interstitial and quantum …
Published in International Journal of Metallurgy and Alloys · Vol. 8, Issue 2, 2022 · pp. 28–36 Read article
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In-Vitro Evaluation of Control Release of Drug with Carbon Based Nanomaterials
Abstract: Nanomaterials have been introduced as a novel & interesting materials due to their advance properties & their use in nanotechnology applications like nano-sensors, nano-chips, control & targeted drug delivery, diagnosis, gene therapy. These all possibilities are due to their physico-chemical & multifunctional biological characteristics. In medicine, control release of drug is a factor to reduce dosage form in revert reduce side effects. In this work, nanomaterials are using as a …
Published in International journal of Nanobiotechnology · Vol. 1, Issue 1-2, 2015 · pp. 14–18 Read article
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Biosynthesis, characterization of gold nanoparticles using M. indica leaf extractand their anticancer activity
Abstract: The present study involves the novel approach for the synthesis of nanomaterial holds infinite possibilities as nanotechnology has a major impact on medicine and its application. Leaf extract of Mangiferaindicais a very good bioreductant for gold chloride (HAuCl4·4H2O) which leads to the synthesis of gold nanoparticles. Leaf extract of Mangiferaindicawas mixed with gold chloride (HAuCl4·4H2O) and UV-vis spectroscopy was used to detect the synthesis of nanoparticles. TEM and FESEM were …
Published in International journal of Nanobiotechnology · Vol. 2, Issue 2, 2016 · pp. 1–4 Read article
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Nano Flake – A Cost-effective Method for Solar Cells
Abstract: A technical step forward may bring solar power within the grab of ordinary households, by both reducing the cost of producing solar cells and improving their efficiency. Solar energy currently accounts for less than 1% of the world’s electricity because it is a difficult and expensive means of electricity production. One of the key issues limiting the exploitation of solar energy is the cost per kWh of producing electricity. Solar …
Published in International Journal of Nanomaterials and Nanostructures · Vol. 1, Issue 1, 2015 · pp. 37–40 Read article