نتایج جستجو برای: 1 in 20 vv hoac85 c

تعداد نتایج: 17625619  

Journal: :Remote Sensing 2017
Nicolas Baghdadi Mohammad El-Hajj Mehrez Zribi Safa Bousbih

In a perspective to develop an inversion approach for estimating surface soil moisture of crop fields from Sentinel-1/2 data (radar and optical sensors), the Water Cloud Model (WCM) was calibrated from C-band Synthetic Aperture Radar (SAR) data and Normalized Difference Vegetation Index (NDVI) values collected over crops fields and grasslands. The soil contribution that depends on soil moisture...

Journal: :Revista chilena de infectologia : organo oficial de la Sociedad Chilena de Infectologia 2012
Constanza Pinochet Jaime Cerda Tamara Hirsch Jocelyn Mieres Carolina Inostroza Katia Abarca

INTRODUCTION Efficacy and effectiveness of varicella vaccine (VV) as post exposure prophylaxis (PEP) strategy have shown discordant results for disease risk reduction, and more consistent results in their ability to attenuate the disease. AIM To assess the effectiveness of VV as PEP among household contacts. MATERIAL AND METHODS We followed up 33 children after household exposure to a varic...

Journal: :Remote Sensing 2016
Weizeng Shao Zheng Zhang Xiaofeng Li Huan Li

In this paper, a semi-empirical algorithm for significant wave height (Hs) and mean wave period (Tmw) retrieval from C-band VV-polarization Sentinel-1 synthetic aperture radar (SAR) imagery is presented. We develop a semi-empirical function for Hs retrieval, which describes the relation between Hs and cutoff wavelength, radar incidence angle, and wave propagation direction relative to radar loo...

Journal: :Journal of virology 2009
Izabela Zaborowska Derek Walsh

How vaccinia virus (VV) regulates assembly of the host translation initiation complex eIF4F remains unclear. Here, we show that VV activated host PI3K to stimulate downstream mammalian target of rapamycin (mTOR), a kinase that inactivates the translational repressor 4E-BP1. However, although the mTOR inhibitor rapamycin suppressed VV-induced inactivation of 4E-BP1, it failed to inhibit eIF4F as...

Journal: :Remote Sensing 2022

Global warming affects rice crop production, causing deterioration of grain quality. This study used C-band microwave images taken by the Sentinel-1 satellites to monitor growth with aim understand backscatter behavior, focusing on decreases in panicle water contents ripening, which affect backscatter. Time-series changes illustrated a similar tendency across all four analysis years, showing th...

Journal: :Journal of Bartin Faculty of Forestry 2021

In this study, the success of different satellite images and classification approaches in land cover (LC) were compared. A total six images, including two passive (Landsat 8 OLI (L8) Sentinel-2 (S2)) four fused from active (Sentinel-1(S1)-VH VV polarization) (L8-S1-VH, L8-S1-VV, S2-S1-VH S2-S1-VV) used study. For purpose, L8, S2, L8-S1-VH, S2-S1-VV classified according to three ((Maximum Likeli...

Journal: :The Journal of general virology 2003
Patrick C Reading Geoffrey L Smith

The early inflammatory response to a virus may be critical in restricting infection and in shaping the subsequent adaptive immune response. In this study we have examined the early inflammatory response of mice following infection with vaccinia virus (VV) strain Western Reserve (WR). Respiratory challenge of BALB/c mice with VV led to early virus replication in the lung and upper respiratory tr...

Journal: :European Journal of Remote Sensing 2022

Optical-based near-real time deforestation alert systems in the Brazilian Amazon are ineffective rainy season. This study identify clear-cut deforested areas through Neural Network (NN) algorithm based on C-band, VV- and VH-polarized, Sentinel-1 images. Statistical parameters of backscatter coefficients (mean, standard deviation, difference between maximum minimum values – MMD) were computed fr...

Journal: :Remote Sensing 2022

Comprehensive knowledge about irrigation timing is crucial for water resource management. This paper presents a comparative analysis between C- and L-band Synthetic Aperture Radar (SAR) data the detection of events. The was performed using C-band time series derived from Sentinel-1 (S1) satellite two images PALSAR-2 (ALOS-2) sensor acquired over irrigated grassland plots in Crau plain southeast...

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