نتایج جستجو برای: sar structureactivity relationship

تعداد نتایج: 569880  

Journal: :IEEE Trans. Geoscience and Remote Sensing 2002
Sylvie Le Hégarat-Mascle Mehrez Zribi F. Alem A. Weisse Cécile Loumagne

—Previous studies have shown the possibility of using European Remote Sensing/synthetic aperture radar (ERS/SAR) data to monitor surface soil moisture from space. The linear relationships between soil moisture and the SAR signal have been derived empirically and, thus, were a priori specific to the considered watershed. In order to overcome this limit, this study focused on two objectives. The ...

Journal: :Allergologia et immunopathologia 2011
G Ciprandi M Tosca D Fuchs

BACKGROUND Seasonal allergic rhinitis (SAR) is characterised by an inflammation consequent to allergen exposure. Nitric oxide may be involved in allergic inflammation. OBJECTIVE This study evaluated the serum nitrite concentrations in SAR patients during and outside pollen exposure in order to estimate activity of nitric oxide synthases. METHODS One hundred and two (56 females, 46 males, me...

2017
A. Edwards-Smith K. Morrison S. Zwieback I. Hajnsek

This work presents the first experimental demonstration of the virtual bandwidth synthetic aperture radar (VB-SAR) imaging scheme. VB-SAR is a newly-developed subsurface imaging technique which, in stark contrast to traditional close-proximity ground penetrating radar (GPR) schemes, promises imaging from remote standoff platforms such as aircraft and satellites. It specifically exploits the dif...

2015
Jiefang Yang Yunhua Zhang

As we know, a moving target’s azimuth shift in synthetic aperture radar (SAR) image is proportional to the projected velocity of its across-track velocity in the slant-range plane. Therefore, we can relocate the moving target in SAR image after estimating its velocity. However, when the Doppler ambiguity occurs due to the limitation of the SAR system’s pulse repetition frequency (PRF), this rel...

Journal: :Indian Journal of Pharmaceutical Sciences 2022

In this study, the interaction between human immunodeficiency virus reverse transcriptase and methyldiarylpyrimidines containing a hydroxyimino, hydrazine, hydroxyl, cyclopropylamino, cyano or chloro etc. substituent was studied by molecular docking simulation, accomplished with AutoDock4.2 absorption, distribution, metabolism, excretion toxicity-structure-activity relationship Swiss metabolism...

Journal: :Current Biology 1999
G. W. Felton K. L. Korth J. L. Bi S. V. Wesley D. V. Huhman M. C. Mathews J. B. Murphy C. Lamb R. A. Dixon

Pre-inoculation of plants with a pathogen that induces necrosis leads to the development of systemic acquired resistance (SAR) to subsequent pathogen attack [1]. The phenylpropanoid-derived compound salicylic acid (SA) is necessary for the full expression of both local resistance and SAR [2] [3]. A separate signaling pathway involving jasmonic acid (JA) is involved in systemic responses to woun...

Journal: :Journal of rehabilitation medicine 2015
Mathieu Panchoa de Sèze Etienne Guillaud Laure Slugacz Jean René Cazalets

OBJECTIVE Camptocormia is a disabling pathology of the axial system that debilitates patients in their daily life. To date, there have been no studies evaluating the impact of camptocormia on walking performance. This study presents a new method for assessing sagittal posture under walking conditions in patients with camptocormia. DESIGN The severity of camptocormia was evaluated by measuring...

2009
Josaphat Tetuko Sri Sumantyo

Synthetic Aperture Radar (SAR) is a multipurpose sensor that can be operated in all-weather and day-night time. Recently, the SAR sensor is operated in linear polarization (HH, VV and its combination) with limited retrieved information. The characteristic of the conventional SAR sensor is bulky, high power, sensitive to Faraday rotation effect etc. Recently, we are developing the Circularly Pol...

2004
J. P. Kerekes

An experiment was performed in Northern Maine recently to evaluate the use of Synthetic Aperture Radar (SAR) data in the measurement of soil moisture content in small area plots with varying surface cover and at various subsurface depths. Ground preparation efforts involved defining six contiguous 30 m x 30 m plots with three surface cover conditions: bare tilled soil, short grass and forest. F...

Journal: :Journal of chemical information and modeling 2009
Xia Ning Huzefa Rangwala George Karypis

Structure-activity relationship (SAR) models are used to inform and to guide the iterative optimization of chemical leads, and they play a fundamental role in modern drug discovery. In this paper, we present a new class of methods for building SAR models, referred to as multi-assay based, that utilize activity information from different targets. These methods first identify a set of targets tha...

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