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520 articles for “SAR”
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Research ArticleOpen accessEvery word in the titlePrevalence of Oncogenic HPV Types in Sardinia (Italy): Implications for the Impact of Prophylactic Anti-HPV VaccinesStefania Montisci, Sabrina Pitzalis, Marianna Greco et al.Infection with high-risk HPV genotypes is considered an essential step in cervical carcinogenesis. Recently, prophylactic anti-HPV vaccines have shown to provide effective protection in clinical trials. However, protection appears to be type-restricted, thus, its real extent will depend on HPV types prevalence in the target population. Here we report HPV prevalence in 555 Italian women with various stages of HPV-related … …American Journal of Infectious Diseases, Vol. 3, Issue 3 · 30 Sep 2007 · 7,036 accessesView PDFCite
Research ArticleOpen accessIn the keywordsMulti-Temporal Sentinel-2 Images for Classification AccuracyYuhendra, Eva YuliantiThe term ‘multi-temporal’ refers to data recorded by sensors scanning the same scene at different dates and times. In this research, Sentinel-2A images were selected for the analyses. Sentinel-2 is a very new program of the European Space Agency (ESA) designed for fine spatial resolution global monitoring. Land Cover–Land Use (LCLU) classification tasks can take advantage of the fusion of … …Journal of Computer Science, Vol. 15, Issue 2 · 22 Feb 2019 · 7,953 accessesView PDFCite
Research ArticleOpen accessIn the keywordsINVESTIGATION OF THE GROUNDWATER SUITABILITY FOR IRRIGATION PRACTICES IN AN ARID REGION: CASE STUDYAhmed MuradGroundwater is an important source of acceptable water for irrigation in the arid regions and in particular in the United Arab Emirates (UAE). Demand for groundwater is increasing in the UAE due to population growth and significant economic advancement associated with political stability. As agricultural practices are the main land use in Al Hayer area, southeast UAE, majority of extracted … …American Journal of Environmental Sciences, Vol. 10, Issue 1 · 25 Jan 2014 · 7,425 accessesView PDFCite
Research ArticleOpen accessIn the keywordsSpeckle Suppression of Radar Images Using Normalized ConvolutionA. K. Helmy, G. S. El-TaweelProblem statement: Synthetic Aperture Radar (SAR) images are becoming more widely used in remote sensing applications. SAR uses microwave radiation to illuminate the earth's surface. The coherent microwave illumination, however, suffers from fading effects result in generating a multiplicative speckle noise that corrupts SAR images. Approach: Through this study, scheme to reduce speckles was proposed, it was designed to accomplish … …Journal of Computer Science, Vol. 6, Issue 10 · 5 Aug 2010 · 7,259 accessesView PDFCite
Research ArticleOpen accessIn the keywordsRobust of Doppler Centroid for Mapping Sea Surface Current by Using Radar Satellite DataMazlan Hashim, Maged MarghanyProblem statement: Sea surface current retrieving from Synthetic Aperture Radar (SAR) is required standard methods due to the complexity of sea surface ocean imaging in SAR data. In this context, various analytical models have been developed which describe overall effects of sea surface roughness on the Doppler signal mechanisms. Nevertheless, such models are limited in the complexity of the sea … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 4 · 31 Dec 2009 · 7,415 accessesView PDFCite
Research ArticleOpen accessIn the keywordsIntegrated Assessment of Water Resource Sustainability in the Upper Amojú River Basin, Northern Peruvian AndesJuan Eduardo Suarez-Rivadeneira, Freddy A. Manayay, Mayra Pamela Musayón Diaz et al.This study presents a comprehensive, statistically robust assessment of water resource sustainability in the upper section of the Amojú River Basin, Province of Jaén northern Peruvian Andes, using the Sarandón multi-cirteria methodology. A stratified convenience sample of n = 887 households distributed across 22 localities was surveyed, achieving a margin of error of ±2.61% at the 95% confidence level (finite-population … …OnLine Journal of Biological Sciences, Vol. 26, Issue 4 · 26 Sep 2026 · 719 accessesView PDFCite
Case ReportOpen accessIn the keywordsAcyclovir May Be Used to Treat Certain Long COVID Patients Regardless of Herpesvirus Reactivation: Case ReportDenise Stewart, Martin Oswald SavageFundamental causes of long COVID or Post-Acute Sequelae of COVID-19 (PASC) are still under investigation while it remains a significant burden to millions of patients worldwide even after a relatively mild acute Coronavirus Disease 2019 (COVID-19) episode. Treatment and management programs are yet to be developed. The foremost hypotheses for underlying PASC pathophysiology include: The persistence of the virus in … …American Journal of Infectious Diseases, Vol. 20, Issue 1 · 12 Mar 2024 · 25,572 accessesView PDFCite
Research ArticleOpen accessIn the keywordsRelease of Endogenous Chondroitin Sulfate and Heparin as Consequence of Dysregulated Proteolysis in COVID-19Marco RuggieroInfection by severe acute respiratory syndrome-related coronavirus 2 (SARS-CoV-2), the pathogen responsible for COVID-19, is associated with immune-mediated responses that lead to dysregulated activation of proteolytic enzymes; these contribute to damage to the endothelium, thrombosis, hypercoagulability and other hematologic complications that include thrombotic thrombocytopenia, a complication of severe COVID-19 as well as a potentially fatal adverse effect of COVID-19 vaccination. … …American Journal of Immunology, Vol. 17, Issue 1 · 29 Dec 2021 · 7,688 accessesView PDFCite
Review ArticleOpen accessIn the keywordsCOVID-19: A Review of Current Evidence on Phylogenetics and EtiopathogenesisRafiq Shajahan, Naganathan K. PillaiCOVID-19 represents the latest pandemic caused by the SARS-CoV-2 coronavirus. Coronaviruses are RNA viruses that cause a largely viral mediated immune-related syndrome similar to the SARS epidemic. Following metagenomic sequencing, SARS-CoV-2 closely resembles SARS-CoV (79% similarity) and MERS-CoV virus (50% similarity). Despite this, clinical observations have found varying degrees of infectivity and pathogenesis amongst these viruses. Phylogenetic origins of SARS-CoV-2 … …American Journal of Infectious Diseases, Vol. 17, Issue 1 · 2 Apr 2021 · 6,764 accessesView PDFCite
Literature ReviewOpen accessIn the keywordsPotential Pathomechanism of Neuro-COVID-19Abir Fguirouche, Nissrine Louhab, Mohamed Chraa et al.Gathered data about SARS-CoV-2 have shown strong evidence in terms of neuroinvasive and neurotropic capacities of the virus to reach and cause eventual damage to the Central Nervous System. The spread of the virus may occur through direct and indirect ways, leading to anosmia and/or ageusia. These signs have been observed in many COVID-19 patients and are then included in … …OnLine Journal of Biological Sciences, Vol. 20, Issue 4 · 7 Dec 2020 · 6,542 accessesView PDFCite