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1562 articles for “X.509”
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A Dipole Circular Patch Antenna for Operation in the X-Band
Abstract: This microwave engineering research paper proposes, designs, calculates, and simulates a novel dipole circular patch antenna for theoretical wideband operations in the X-band (the 8 GHz to 12 GHz frequency range). This proposed microstrip patch antenna was realized using FR-4 as a dielectric (a thickness of 1.5 mm) with copper being used in both the ground plate and the two transmitting circular elements (the so-called patches with a thickness of …
Published in Journal of Microwave Engineering and Technologies · Vol. 8, Issue 2, 2021 · pp. 1–8 Read article
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Magnetic Moments of Mirror Hypernuclei with X-N-Λ Configuration for 6 Λ He ∼ 6 Λ Li and 14 Λ C ∼ 14 Λ N with Hybrid Quark Model
Abstract: A microscopic method to evaluate the effective magnetic moment of hyperon inside a six-quark bag based on quark exchange current model has been described. The Schmidt formula and its modification for magnetic moments of hypernuclei with X-N-Λ in the framework of hybrid quark model has also been discussed. The modified values depend on (i) the probability of the overlap of hyperon with the nucleons and (ii) the effective magnetic moments …
Published in Journal of Nuclear Engineering & Technology · Vol. 8, Issue 2, 2018 · pp. 15–23 Read article
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COVID-19 Detection through Deep Learning Models using Chest X-ray
Abstract: Detection of COVID-19 in a minimum amount of time is one of the biggest challenges in front of us because COVID-19 is a rapidly spreading disease. Patients are increasing in a rapid amount of time. Hence, we proposed an AI-technique based deep-convolutional neural network to detect COVID-19 patients using real-world data. In our proposed system, chest X-ray images are used to find out COVID- 19 patients. X-rays are available very …
Published in Journal of Advancements in Robotics · Vol. 8, Issue 2, 2021 · pp. 11–16 Read article
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COVID-19 Prediction using X-Ray Images and Deep Learning Model
Abstract: In the year 2019, the novel corona virus was emerged in China. Since, then every individual has put their own self to fight against this pandemic situation. Till April 14, 2022, the total COVID-19 confirmed cases are 500,186,525 and deaths are 6,190,349 worldwide. RT-PCR and Rapid antigen test are the standards for COVID-19 detection by WHO. These both tests are time consuming and costly and also there are higher possibilities …
Published in Journal of Image Processing & Pattern Recognition Progress · Vol. 9, Issue 2, 2022 · pp. 24–32 Read article
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New Distribution Record of Five Species of Xylaria from Tripura, Northeast India
Abstract: The present study deals with new distribution record of five Xylaria species from Tripura, North-east India. Out of total five species, X. obovata, X. nigripes, X. multiplex and X. hypoxylon were not reported from entire Northeast India. Present findings revealed a potential check list of Xylaria of the region. It was observed that Xylaria species prefer to grow on dead decaying wooden logs situated on the moist deciduous forest floor. …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 8, Issue 1, 2018 · pp. 1–10 Read article
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Effect of Solar X-ray Flares on VLF Radio Wave Signal Strength at 19.8 and 24 kHz Received at Khatav (India) (16°46'N, 75°53'E)
Abstract: The period from August 2009 to July 2012 was an important period as 2009–10 was solar minimum period, and solar cycle was extended by 16 months during this period. In this period, solar activity like solar X-ray flares, solar wind, coronal mass ejections were at minimum level. In this research, it is focused on detailed study of response of signal strength of VLF radio waves transmitted by VLF station NWC …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 6, Issue 3, 2017 · pp. 15–34 Read article
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Deconvolution of X-ray Diffraction Spectrum of Polypropylene
Abstract: Deconvolution methods have been used to evaluate degree of crystallinity and particle size from diffractogram of polypropylene(PP). The deconvolution method is used to separate the various peaks from the total XRD spectrum and it is successful in separating the crystalline, amorphous and background regions of a diffractogram. The degree of crystallinity of PP is calculated to be 49%. The particle size of crystallites in different crystalline phase is calculated using …
Published in Research & Reviews : Journal of Physics · Vol. 2, Issue 3, 2013 · pp. 1–4 Read article
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An Appraisal on Concept of Ama with Special Reference to Xenobiotics
Abstract: Concept of ama is a unique entity in Ayurveda. The term ama denotes several meanings such as unprocessed food, partially digested food, the food which needs further transformation etc. It is the first stage of vranashotha and has main role in vyadhi utpatthi hence vyadhi also carries synonym as amaya. Impaired agni is the prime cause for ama utpatthi and it has the capacity to vitiate dosha, thereby disturbing the …
Published in Research & Reviews : Journal of Herbal Science · Vol. 13, Issue 1, 2024 · pp. 7–10 Read article
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Synthesis, characterizations, and challenges of magnetic Zn x Fe 2-x O 3 nanoparticles
Abstract: Diluted magnetic semiconductors comprising magnetic nanoparticles are a driving force in a variety of applications, including biomedicine, bioelectronics, photocatalytic activities, and nanosensors. However, the functionality of these nanomaterials can be influenced by several factors, such as synthesis route, characterization procedures, source, crystal size, and morphology. In this research, emphasis is devoted to synthesizing and characterizing magnetic nanoparticles. Most importantly, it is focused on biological methods, Co-precipitation methods, hydrothermal Gravity methods, …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 28, Issue 2, 2025 · pp. 1–16 Read article
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Neuro-Symbolic Agentic AI for Autonomous Scientific Discovery: Integrating Deep Reinforcement Learning, Quantum Simulation, and XAI-Audited LLM Hypothesis Generation in Drug Target Identification
Abstract: The exponential growth of multi-omics data and the increasing complexity of disease-associated protein interactomes have rendered conventional drug target identification pipelines computationally and epistemologically inadequate. This paper presents the Neuro-Symbolic Agentic AI for Scientific Discovery (NS-AASD) framework, a unified architecture that cohesively integrates deep reinforcement learning (DRL) exploration strategies, variational quantum simulation (VQS) of protein conformational dynamics, and XAI-audited large language model (LLM) hypothesis generation within an autonomous scientific discovery …
Published in Research and Reviews : Journal of Computational Biology · Vol. 15, Issue 2, 2026 · pp. 15–24 Read article
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Synthesis of Nanocrystalline Bismuth Ferrite by Solution Combustion Synthesis Method
Abstract: Normal 0 false false false EN-US X-NONE X-NONE The present paper describes a simple method of nanosized BiFeO3 by the solution combustion synthesis using bismuth and iron nitrates as oxidizers and the combination fuel of citric acid and ammonium nitrate, with fuel to oxidizer ratio (Ψ = 1) one. The average crystallite size of BiFeO3 nanoparticles was estimated from the full width half maximum of the X-ray diffraction peaks of …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 1, Issue 2, 2011 · pp. 52–58 Read article
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Tb3+ activated Boro Phosphate Glass: Synthesis and Photoluminescence (PL) Characteristics
Abstract: The (40B2O3+ 3Al2O3+(10-x) P2O5 + xTb + 7ZnO+5LiCO3+ 10H6NO4P+25SrCO3) boro phosphate glass was successfully synthesized via melt quenching method. The structural confirmation is supported with X-ray diffraction (XRD) data and surface morphology was defined by scanning electron microscope (SEM). The (40B2O3+ 3Al2O3+(10-x) P2O5 + xTb+ 7ZnO+5LiCO3+ 10H6NO4P+25SrCO3) boro phosphate glass has been investigated for its Photoluminescence (PL) under UV excitation. At 544 nm, the excitation was observed, and at 222 …
Published in Journal of Polymer & Composites · Vol. 12, Issue 6, 2024 · pp. 43–47 Read article
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DentiDetect: Dental Diagnosis Powered by Deep Learning
Abstract: Dental X-rays play a crucial role in modern dentistry, enabling dentists to detect cavities, bone loss, and other hidden dental issues that are not easily visible during a routine examination. X-rays offer a clear picture of teeth, bones, and nearby tissues, enabling early identification of issues. This helps create more efficient treatment strategies and improves patient outcomes. Three commonly used types of X-rays include bitewing, periapical, and panoramic. Bitewing X-rays …
Published in Research and Reviews: A Journal of Dentistry · Vol. 15, Issue 3, 2024 · pp. 21–26 Read article
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FMR1 Key Biomarker in Fragile X Syndrome- A Comprehensive Review
Abstract: Fragile X Syndrome (FXS) is a complicated neurodevelopmental condition that causes intellectual disabilities, behavioural issues, and a variety of physical symptoms. Central to understanding FXS is the Fragile X Mental Retardation 1 (FMR1) gene, pivotal in the disorder's pathogenesis. This review examines FMR1 as a key biomarker in FXS, drawing on recent research insights. The FMR1 gene, situated on the X chromosome, encodes the fragile X mental retardation protein (FMRP), …
Published in International Journal of Brain Sciences · Vol. 1, Issue 2, 2024 · pp. 8–18 Read article
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Emissivity and Dielectric Behavior of Red Soils of Dhule District at X-band Microwave Frequencies
Abstract: Using X-band (8.2 and 10.5GHz) experimentation, the fluctuation of the dielectric constant (ε’) and dielectric loss (ε’’) of soil samples with different moisture contents has been determined. After reaching a transition point, the value of (ε') grows gradually with moisture content before increasing quickly after that. The emissivity has been estimated from experimentally determined (ε’) using emissivity model for vertical polarization. The findings indicate that as MC/dielectric constant increases, emissivity …
Published in Journal of Microwave Engineering and Technologies · Vol. 10, Issue 3, 2023 · pp. 23–30 Read article
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Solution Combustion Synthesis of Nanocrystalline and High-K Dielectric Lanthanum Oxide
Abstract: Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 The present paper describes a simple and eco-friendly chemical method of lanthanum oxide or lanthania (La2O3) nanoparticles by the solution combustion synthesis based on urea. The fuel urea is varied for different fuel to oxidizer ratios (F/O) or Ψ = 0.5 to 1.5 in the steps of 0.25. The average crystallite size of La2O3 nanoparticles was estimated from the full width …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 1, Issue 3, 2011 · pp. 1–7 Read article
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Microstrip Planar Broadband Yagi-Uda Antenna for X-Band Communication
Abstract: In this paper, a planar Yagi-Uda antenna based on classic Yagi-Uda dipole antenna is accessible which is very useful for microwave wireless applications. This antenna provides relatively high gain and more directive radiation pattern at X frequency band with proper impedance matching. This antenna has been developed at supporting dielectric constant of 4.4, supported substrate thickness of 1.6 mm and loss tangent of 0.02. The proposed antenna is completely compatible …
Published in Journal of Electronic Design Technology · Vol. 3, Issue 1-3, 2012 · pp. 60–63 Read article
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Applying the XML-based Technique to Support Keyword Search in Graph Data
Abstract: Graphs have been important and proper structures to represent data with complex relationships in the Web, and keyword search provides a convenient way to querying graphs. Some researchers considered to return r-cliques as answers for keyword search in graph databases. Such concepts can retrieve meaningful information effectively, but the existing approach is computationally expensive. In this paper, we propose to utilize the efficient technique originally designed for keyword search in …
Published in Journal of Advanced Database Management & Systems · Vol. 1, Issue 2, 2014 · pp. 25–32 Read article
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Isolation and Characterization of 1,6-Dihydroxy-3-Methoxy-8-Methyl Xanthones from Swertia purpurascens Wall – A High Altitude Himalayan Medicinal Herb
Abstract: Normal 0 false false false EN-US X-NONE X-NONE 1, 6-dihydroxy-3-methoxy- 8- methyl xanthones from Swertia purpurascens Wall. (Gentianaceae) has been isolated along with oleanolic acid. 1,6-dihydroxy-3-methoxy- 8- methyl xanthones for the first time has been reported from this plant source and identified by means of chemical as well as spectroscopic methods.Keywords: Swertia, 1, 6-dihydroxy-3-methoxy- 8- methyl xanthones, oleanolic acid, isolation.
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 3, Issue 1, 2012 · pp. 1–5 Read article
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Production of Ethanol from Rice Straw using Xylose Fermenting Yeast Isolates
Abstract: With increasing energy demand world-over, there is a need to develop cost effective technologies for the production of bio fuels using renewable sources such as lignocellulosic biomass. However, ethanol productivity is still low and the process is not economically viable. The major limiting factors include the complex and highly crystalline structure of lignocellulosics, low loading rate during saccharification and low amount of hexose and pentose sugars generated during saccharification. Distiller’s …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 2, Issue 3, 2012 · pp. 12–19 Read article