Search
138 articles for “spectral”
-
Hand Grasp Recognition and Classification of Prehensile Surface EMG Signals
Abstract: Myoelectric control signals are commonly used as a convenient solution of prosthesis control for the disabled persons or amputees. Surface EMG signal being noninvasive is easy to acquire and is commonly used in prosthetic devices. Myoelectric control system is the fundamental component of modern prostheses, which uses the myoelectric signals from an individual’s muscles to control the prosthesis movements. In this paper data collected from several subjects using four surface …
Published in Current Trends in Signal Processing · Vol. 5, Issue 3, 2015 · pp. 29–38 Read article
-
DNA Binding and Cleavage Studies of Cobalt Complexes Containing Bioactive Mixed Ligands
Abstract: The complexes containing bioactive ligand of the type [Co(L1L2)] (PF6)2 complex (1) (where L1=1,10-phenanthroline and L2 = N,N-dimethyl-2-{5-[(pyrrolidin-1-ylsulfonyl)methyl]-1H-indol-3-yl}ethanamine (almotriptan) in 1:1 molar ratio of ligands) and [Co(L1L3L4)] (PF6)2 complex (2) (where L3=4H-1,2,4-triazol-4-amine, L4=1H-benzimidazole-2-thiol and the ligands are in the ratio 1:1:1, were synthesized and characterized. The DNA binding property of the complexes with calf thymus DNA has been investigated using absorption spectra, viscosity measurements and thermal denaturation experiments. The intrinsic …
Published in Emerging Trends in Chemical Engineering · Vol. 1, Issue 1, 2014 · pp. 49–56 Read article
-
Synthesis of new heterocyclic compounds containing nitrogen, sulphur and study their biological activity
Abstract: Several substituted pyridines with brominated coumarin and with other substituents were achieved by condensing brominated coumarin IV with 4-methoxybenzaldehyde in basic solution forming α,β-unsaturated ketone II. Hantzsch reaction of this ketone with β-ketoester to provide precursor substituted pyridines. The Hantzsch reaction product was subjected to different reactions. The other targeted heterocyclic compound was obtained by reaction of α,β-unsaturated ketone II with hydrazine carbothioamide to give substituted pyrazole with brominated coumarin, …
Published in Emerging Trends in Chemical Engineering · Vol. 8, Issue 3, 2021 · pp. 8–16 Read article
-
Synthesis of Zeolite Y-Encapsulated Copper(II) Complexes with Aminobenzonitriles and Carbonitriles by Flexible Ligand Method
Abstract: Zeolite Y encapsulated copper(II) sulphate complexes with 2-, 3- and 4- aminobenzonitrile and carbonitrile have been prepared by flexible ligand synthesis method. Complexes are characterized by magnetic susceptibility, infra-red and electronic spectral techniques. The data clearly suggests the presence of metal complexes in zeolite matrix.
Published in Journal of Catalyst & Catalysis · Vol. 1, Issue 1, 2014 · pp. 41–52 Read article
-
Zeolite-Y Encapsulated Copper (II) and Cobalt (II) Species as Hybrid Nano-catalysts: Structural and Catalytic Aspects
Abstract: Special properties inherent to zeolites in facilitating the construction of novel supramolecular assemblies by encapsulation of guest molecules (metal complexes) into their large cages can be utilized to use these assembled materials as novel catalysts. These modified solids have the advantages of both behaving as the homogeneous and the heterogeneous catalytic system. In the present work, copper (II) and cobalt (II) complexes of 2-amino ethanoic acid (2-AEA) encapsulated in the …
Published in Journal of Catalyst & Catalysis · Vol. 8, Issue 1, 2021 · pp. 19–32 Read article
-
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
-
Effect on Temperature and Efficiency on Photovoltaic Module of PV/T System with Water Based Optical Filter
Abstract: Solar radiation has ultraviolet, visible and infrared radiations, in which infrared and ultra-violet part of the solar radiation are mainly responsible for the heating of solar cell. This decreases the efficiency of the solar cell by –0.3 to –0.5% K-1. When we increase the concentration on the solar cell then the heat becomes more prominent and causes the damage of the solar cell, and also decreases the efficiency of solar …
Published in Journal of Electronic Design Technology · Vol. 8, Issue 1, 2017 · pp. 1–6 Read article
-
A Study of Flow Analysis Within a Tractor Cabin with the Goal of Determining the Best Vent Location and Glazing
Abstract: This study aims to improve the thermal comfort inside a tractor cabin by determining the position of the air conditioner vent location. This is obtained by maintaining the cold air flow inside the cabin by means of the air conditioning vents and proper HVAC systems. The concept of glazing on windows with different materials was also used to improve the thermal comfort of the tractor cabin by reducing the thermal …
Published in Journal of Mechatronics and Automation · Vol. 8, Issue 2, 2021 · pp. 29–42 Read article
-
Analysis of Braggs Grating for photonics application
Abstract: The plane wave expansion approach was used to optimise reflectance in a Braggs grating on a silicon on insulator structure at wavelength 1.55µm. When the results were compared to the experimental results, it was discovered that they agreed better than any other present results. Aside from the inherent benefits of FBGs, such as low cost, low losses, polarisation insensitivity, and full compatibility with fiber-optic systems, they have demonstrated that by …
Published in Journal of Microwave Engineering and Technologies · Vol. 9, Issue 1, 2022 · pp. 32–35 Read article
-
Implementation of 16-Bit Qam Using Texas Instruments
Abstract: In this paper, an implementation of 16-bit QAM is performed where there is a high use of Digital Video Broadcasting Cable (DVB-C), as there is increase in the usage the bandwidth requirement for each user is mutually increasing. Due to this, there is spectral congestion caused and drastic improvements have been taken in the field of communications. QAM multilevel modulation can offer an attractive solution to current bandwidth restriction in …
Published in Journal of Microelectronics and Solid State Devices · Vol. 2, Issue 2, 2015 · pp. 14–20 Read article
-
Homodinuclear and Heterodinuclear Sulphocyanate Bridged Lewis Acid Complexes: An Insight into their Reactivity and Structural Flexibility
Abstract: This precpective reports the synthesis of homodinuclaer and heterodinuclear complexes of the type MM (SCN)4 and MM/ (SCN)4 (M-Co2+ , Ni, M/ , = Cd2+, Hg2+) with N.N' Bis (salicylidene) 1,2- plionylendfamine. A superficial insight has also been reported about their reactivity and structural flexibility. The complexes have been characterized on the basis of elemental analysis, conductivity measurements, magnetic susceptibility measurements, Proton magnetic resonance UV-Visible and midIR spectral studies. The …
Published in Journal of Nuclear Engineering & Technology · Vol. 11, Issue 1-2, 2021 · pp. 42–47 Read article
-
Nuclear Laser Techniques and the Use of Ion Exchange Resins for Radioactive Waste Removal
Abstract: The energy found in an atom's nucleus, or core, is referred to as nuclear energy. Electricity can be produced using nuclear energy, but it first needs to be released from the atom. A laser that has been nuclear pumped has been charged with energy from fission byproducts. In a nuclear reactor core, the lasing medium is housed in a tube lined with uranium-235 and exposed to strong neutron flux. The …
Published in Journal of Nuclear Engineering & Technology · Vol. 11, Issue 3, 2021 · pp. 29–32 Read article
-
Electrical Conductivity and Antibacterial Studies on Chemically Synthesized Poly (2-Methyl Aniline-co-2-Chloro Aniline)-Blend-Polyurethane
Abstract: AbstractElectrically conducting copolymer blend, poly (2-methyl aniline-co-2-chloro aniline)-blend-polyurethane has been synthesized chemically by oxidative polymerization technique using 0.3 M ammonium persulphate (APS) as oxidant, 0.1 M of the anionic surfactant, sodium lauryl sulphate and 1 M HCl as dopant. The formation of the copolymer blend has been confirmed by comparison with the spectral data obtained for the copolymer which was synthesized under the same conditions and characterized. The copolymer blend …
Published in Journal of Polymer & Composites · Vol. 5, Issue 1, 2017 · pp. 7–14 Read article
-
Optical and Microstructural Changes in 5(6)-Carboxyfluorescein Doped PVA
Abstract: AbstractThe effect of 5(6) Carboxyfluorescein dye on microstructural and optical properties of a Poly(vinyl alcohol) (PVA) have been studied by using FTIR and UV-Visible absorption techniques. FTIR spectral result shows the possible interaction between the dye and PVA. The UV-Visible spectra shows three absorption bands (around 227nm, 310nm and 450nm) and from the observed optical band edges in the UV-Visible spectra, three optical band gaps and three activation energies for …
Published in Journal of Polymer & Composites · Vol. 4, Issue 3, 2016 · pp. 45–51 Read article
-
Modification of Acrylonitrile-Methylacrylate Copolymer by Gamma Irradiation
Abstract: AbstractRadiative degradation of acrylonitrile-methylacrylate (AM) copolymer has been investigated by electron spin resonance (ESR) and infrared (IR) spectroscopy. The ESR spectrum observed for AM copolymer irradiated to a dose of 12 Mrad is a triplet with an intensity ratio of 1:3:1. The ESR spectrum is simulated by total-curve-fitting method and component spectra are generated. Magnetic parameters of component spectra are evaluated. Component triplet spectrum with magnetic parameters ni=3, mi=1 is …
Published in Journal of Polymer & Composites · Vol. 3, Issue 3, 2015 · pp. 16–19 Read article
-
Ionic Conductivity of Chain Extension Supramolecular Polymer Material based on Reactive Hydrogen Bonding Motif
Abstract: AbstractSelf-assembly of low molecular weight oligomers possessing good mechanical properties at room temperature and having a low melt viscosity at elevated temperatures are of interest for many applications, such as hot melts and thermoplastic elastomers. Association between end groups can be based on a variety of secondary interactions, such as Vander Waals, hydrophobic, ionic interactions, or hydrogen bonding. A low molecular weight poly (ethylene glycol) (PEG) was functionalized with 2-Ureido-4[1H] …
Published in Journal of Polymer & Composites · Vol. 2, Issue 1, 2023 · pp. 30–36 Read article
-
Calculation Improvement of the Clay Content in the Hydrocarbon Formation Rocks
Abstract: Natural radioactivity of reservoir rocks of oil and gas in East Baghdad field is due to not only their content of clay material, but also the existence of uranium located in the skeleton of rocks. In connection with this, for the shale content determination of reservoir rocks, it is necessary to exclude the uranium contribution from the overall intensity of the gamma radiation. The paper presents the results of a …
Published in Journal of Petroleum Engineering & Technology · Vol. 7, Issue 1, 2017 · pp. 1–3 Read article
-
A Study on Various Approaches in Remote Sensing
Abstract: AbstractThis paper studies the various approaches used in the remote sensing. The importance of Remote Sensing is that to learn to extract valuable information from it. The traditional approach has been to analyse RS images and then construct information-extraction models, these approaches are able to construct spectral, textural and geometric attributes of images. The various approaches using machine language, deep learning, Zigbee platform and microwave sensing is discussed here.Keywords: RS …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 7, Issue 2, 2020 · pp. 32–37 Read article
-
Performance Evaluation of PAPR Reduction in OFDM System
Abstract: OFDM is a bandwidth efficient multicarrier modulation which has gained a tremendous focus in recent years because of its high spectral efficiency; multipath delay spread tolerance, effectiveness against impulse noise and frequency diversity. However, some challenging issues still remain unsolved in the design of the OFDM systems. One of the major problems is high peak-to-average power ratio (PAPR) of transmitted OFDM signals. A large PAPR brings disadvantages like increased complexity …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 3, Issue 2, 2016 · pp. 21–36 Read article
-
Network Selection with Load Balancing in Wireless Heterogeneous Environment
Abstract: Coexistence of various wireless radio access networks (RAN) and ability of mobile terminals to switch between them efficiently makes an optimal selection of serving mobile networks for groups of mobile-clients a major challenge with efficient load balancing. To overcome this problem, more flexible heterogeneous wireless networks (HWN) are required with the advantage of mobility, consistency, ubiquitous provision and improved spectral efficiency. In this paper, network selection with load balancing criteria …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 3, Issue 3, 2016 · pp. 7–15 Read article