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76 articles for “polarization difference”
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In vitro Antioxidant Activity and Phytochemical Analysis of Different Polar Solvent Extracts Obtained from Zanthoxylum rhetsa (Roxb) Bark
Abstract: This study was carried out to evaluate the phytochemical and antioxidant effectiveness of methanolic extract and different fractions (n-butanol, ethyl acetate, chloroform and n-hexane) of Z. rhetsa bark. Phytochemical activity of Zanthoxhylum rhetsa (Roxb) bark extract alkaloids, flavonoids, tannins, steroids, saponins and antraquinones was carried out. Antioxidant scavenging enzyme profile assays were done and profiles were developed for validation. The results indicated that bark extract and fractions of Z. rhetsa …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 5, Issue 3, 2015 · pp. 1–7 Read article
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Passive Microwave Remote Sensing of Flood: A Comparison of Various Methods
Abstract: Microwave Remote Sensing is used to detect different land cover types such as, bare soil, water bodies, vegetation cover, forest cover etc., and using different procedures. In this paper, we have targeted on a methodology to detect difference between land and water by using brightness temperature at different frequencies during the flooding period. Disastrous flood occurred in Kashmir (India) during 2014, and passive microwave remote sensing data are utilized for …
Published in Journal of Remote Sensing & GIS · Vol. 6, Issue 1, 2015 · pp. 17–23 Read article
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Normalized Difference of Polinsar Coherence for Classification of Earth Covers
Abstract: The use of the interferometric SAR is extremely urgent for conditions of Siberia, nearly accessible and often covered by clouds. The polarimetric radar interferometry (PolInSAR) makes it possible to analyze the coherence of interferometric couples that provides additional information. This work makes an attempt to use a difference of polarimetric coherence value for the different types of classifications of the earth’s surface. As the processing method, it is proposed to …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 1, Issue 1-3, 2012 · pp. 32–41 Read article
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Polarization Reconfigurable Antenna: Design and Analysis
Abstract: This paper presents an analysis and design of a polarization reconfigurable microstrip patch antenna fed with single and dual feeds operating at WLAN frequency. For a single feed structure a square patch is designed first and is perturbed for obtaining circular polarization. Using PIN diodes this design can be made to generate different polarizations. In case of a dual feed structure the radiating square patch has dual feeding provision and …
Published in Journal of Microwave Engineering and Technologies · Vol. 2, Issue 1, 2015 · pp. 1–8 Read article
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Mechanism of Repulsion and Attraction
Abstract: Fundamental issues of electricity and magnetism have addressed on the basis of vibrating strings. String theory for variable like dimensions have assumed such that vacuum has filled with some vibrating elements known as strings made of dry liquid characterized by non-viscous, compact, and surface tension free medium. Henceforth presence of vacuum energy has converted to electromagnetic fields. Subscriptive issued electrostatic precursor interplay has schemed rated investigation after tracking electrostatically biased …
Published in Research & Reviews : Journal of Physics · Vol. 10, Issue 3, 2021 · pp. 1–6 Read article
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Optical Absorption and Electronic Properties of 4-Aminoantipyrine Schiff’s Bases: A Combined Experimental and DFT Study
Abstract: The Schiff base compounds (A1–A9) have been synthesized and characterized by elemental analysis, FT-IR, UV-Vis, mass spectrometry, 1H-NMR and 13C-NMR. Electronic absorption spectra of A1–A9 are studied in various solvents with different polarity like hexane, chloroform, methanol and dimethyl sulfoxide. To support and better understanding of experimental results, density functional theory (DFT), time dependent density functional theory (TDDFT) calculations has been carried out for these molecules and are in good …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 8, Issue 1, 2017 · pp. 1–13 Read article
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Study on Tools and Challenges of Opinion Mining
Abstract: AbstractOpinion mining is an emerging topic in social media for extraction of large amount of opinionated data available on web. It is a natural language processing technique for examining opinions about a particular product or any topic. Analysis of these opinions is done through various tools available and approaches used. After the process of opinion extraction, a polarity classification is done at different levels. By polarity classification, we mean whether …
Published in Journal of Multimedia Technology & Recent Advancements · Vol. 3, Issue 3, 2016 · pp. 14–16 Read article
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Preparation of New Analytical Reagents and Study of Chromatographic Separation
Abstract: There are various types of diagnostic reagents in the laboratory, which involve many specializations in analytical chemistry and detection of pollution levels in river water and environmental pollution, as well as in the preparation of reagents that form as reagents and complexes with elements. Several techniques are shown here in an endless flow, and it is difficult Simply classify them according to a certain principle.; From a methodological point of …
Published in Emerging Trends in Chemical Engineering · Vol. 11, Issue 1, 2024 · pp. 44–58 Read article
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Phytochemical Study of Seed Extract of Phaseolus vulgaris
Abstract: Phaseolus vulgaris L. is usually known as kidney beans. It is a green medicinal plant that has a place with the family Fabaceae. Conventional arrangement of medication utilized this for the cure of few sicknesses such as diabetes, malignant growth, kidney issues, and so forth. For the present research work, the powdered plant seeds were dissolved consecutively in various solvents in increasing polarity order. Different phytoconstituents such as saponins, flavonoids, …
Published in Research & Reviews : Journal of Herbal Science · Vol. 9, Issue 3, 2020 · pp. 11–16 Read article
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Synthesis and Electrochemical Study of 1-[2′, 4′-dinitrophenyl)-3, 5-dimethyl-4- [4′′-(substituted)sulphonamoylphenyl] Azopyrazoles
Abstract: Electrochemical behavior of 1-(2',4'-dinitrophenyl)-3,5-dimethyl-4-[4"-(substituted) sulphonamoylphenyl] azopyrazole (DDSPA) was studied in Britton-Robinson (BR) buffer range of pH 3.5–12 at dropping mercury electrode (DME) and glassy carbon electrode (GCE). Cathodic differential pulse polarographic peak is obtained at DME in the pH range 3.5–12. Cyclic voltammogram exhibited a well-defined, irreversible cathodic and anodic peak at GCE. At pH 3.5–12, the reduction peak exhibited a tendency to split into two peaks. The first 8e- …
Published in Trends in Drug Delivery · Vol. 1, Issue 2, 2014 · pp. 1–7 Read article
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Quantum Key Distribution in Optical Fiber Communication: A Study
Abstract: The relentless march of technological advancements, particularly in the realm of quantum computing, stances a noteworthy threat to security of existing cryptographic systems. Traditional encryption methods, like RSA and AES, trust on mathematical problems considered computationally hard for computers. However, sufficiently powerful quantum computers could render these systems vulnerable to attacks, jeopardizing the confidentiality of sensitive data transmitted over optical fiber networks. This looming threat has spurred significant research and …
Published in Trends in Opto-electro & Optical Communication · Vol. 15, Issue 1, 2025 · pp. 30–40 Read article
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Theoretical Study of UV Surface Waves in AlAs and AlN
Abstract: Surface waves excited at the interface between polar semiconductor surface and a dielectric when electromagnetic waves of appropriate frequency are incident on it. When the incident electromagnetic energy in the form of photons is absorbed, these surface excitations generate. They are of different kinds such as plasmon, phonon, exciton etc. Plasmon is the quanta of valence electron oscillation; phonon is the quanta of lattice vibration and exciton is the quanta …
Published in Research & Reviews : Journal of Physics · Vol. 12, Issue 1, 2023 · pp. 7–13 Read article
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A Survey on Recent Microstrip Patch Antenna for Navigational Application
Abstract: ABSTRACTSince last so many years microstrip patch antenna is one of the important fields for antenna design. For a different application of satellite communication in which prize, structure simple installation process is one of the key requirement low profile antenna is good to consider. Microstrip antennas is also fulfill the requirements of mobile communication as well as wireless communication. For navigational application the few important parameters are there like compact …
Published in Journal of Communication Engineering & Systems · Vol. 9, Issue 1, 2019 · pp. 55–59 Read article
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Configuration and Properties of Group III Elements in the Periodic Table
Abstract: Group III elements comprise those found in the third column of the periodic table, including boron, aluminum, gallium, indium, and thallium. These elements possess three valence electrons in their outermost shell, characterized by the electron configuration ns2np1, which influences their location and characteristics within the periodic table. The distribution of electron pairs, formal charges, oxidation states, and molecular morphologies of Group III elements and their compounds are illustrated in this …
Published in Journal of Materials & Metallurgical Engineering · Vol. 15, Issue 2, 2025 · pp. 23–30 Read article
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Structural and Elasto-Mechanical Properties of Half Heusler Alloy CoHfBi as Ferromagnetic Semiconductor
Abstract: Herein, we have explored Half Heusler Alloy CoHfBi under the density functional theory is simulated using the Wein2k package. The structural characterization we had done in two different phases, i.e., spin polarised, and non-spin polarised which suggests that the CoHfBi alloy stable in spin polarised phase in Y2 type structure. Ab-Initio calculations are helpful to examine the dependence of the global properties of Heusler alloys on atomic composition and crystal …
Published in Journal of Semiconductor Devices and Circuits · Vol. 10, Issue 2, 2024 · pp. 20–25 Read article
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In vitro Antibacterial Activity of Averrhoa carambola Leaf Extracts
Abstract: The aim of the present study was to determine the phytochemical constituents and antimicrobial potential of Averrhoa carambola leaf extracts against three gram-positive bacteria (Bacillus subtilis, Staphylococcus aureus and Streptococcus mutans) and three gram-negative bacteria (Klebsiella pneumoniae, Proteus vulgaris and Pseudomonas aeruginosa) which are some of the infectious bacteria. The A.carambola leaves were extracted in three different solvents of increasing polarities (hexane, ethyl acetate, and acetone). The phytochemical analysis showed …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 8, Issue 2, 2018 · pp. 27–32 Read article
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Ocean Surface Target Feature Extraction from Fused Multi-Polarized Bands of Sentinel-1 Data
Abstract: The introduction of new generation high-resolution SAR imagery helps in the effective monitoring of land and ocean surfaces. The SAR imagery acquired are often degraded by speckle noise which makes it difficult for quality interpretation mainly in ocean domain. Speckle reduction techniques are applied to these images to reduce the noise prior to other image processing tasks. In this paper, three different speckle reduction methods are applied both in VV …
Published in Journal of Remote Sensing & GIS · Vol. 9, Issue 2, 2018 · pp. 10–16 Read article
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Behavior of Surface Polaritons on Cylindrical Semiconducting Materials at Nanoscale with Radius Dependence Frequency
Abstract: Surface plasmon resonance (SPR) is a physical property of the surface to investigate the important properties of optical behaviors for nanomaterial and biomaterial. It involves the excitation of electrons within a thin metal sheet by incident light at a specific angle, prompting them to propagate parallel to the surface. This sensitivity to external factors, such as changes in the refractive index of the surrounding medium due to molecular adsorption, underscores …
Published in Research & Reviews : Journal of Physics · Vol. 13, Issue 2, 2024 · pp. 1–7 Read article
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Anodic Polarization Study on Steel Bar in Concrete Powder Solution Extracts Contaminated with Chloride and Sulfate Salts
Abstract: In present work, anodic polarization tests are conducted on different steel specimens to find out corrosion zone potentials of various corrosion zones. The tests are done in the concrete powder solution extracts contaminated with the varying levels of admixed chloride and sulfate salts, at varying w/c ratios and cement types. The admixed chloride content is fixed at 3.5% and the sulfate content is used as 0, 2.5 and 5%, by …
Published in Journal of Materials & Metallurgical Engineering · Vol. 6, Issue 1, 2016 · pp. 22–28 Read article
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Crystallization Kinetics and Morphological Shifts in Polylactic Acid/Nanocellulose Blends Under Isothermal Melt Conditions
Abstract: The great potential of polylactic acid as a sustainable biopolymer for packaging, biomedical materials, and additive manufacturing, polylactic acid's slow crystallization kinetics during melt processing causes it to be poorly crystallized, thermally weak, and mechanically underperforming. Crystallization models of PLA/nanocellulose blends have been limited to isothermal melt crystallization kinetics and the resulting morphological changes. The phenomena discussed in this work are systematically explored by melt compounding of polylactic acid with …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 Read article