Results 21 to 30 of about 7,031 (175)

Polarimetric Portraits

open access: yesEarth and Space Science, 2021
“Fully polarimetric” in its original radio science usage denotes a receiving instrument's ability to measure the four‐parameter Stokes vector characterizing the polarimetric properties of an electro‐magnetic (EM) field.
R. Keith Raney
doaj   +1 more source

Actual metrological conditions for ionizing chamber calibration in radiotherapy [PDF]

open access: yesArchive of Oncology, 2004
BACKGROUND: Since 1976 it has been recognized that an accuracy of ±5% in the delivery of an absorbed dose to a target volume is necessary for successful therapy treatment.
Spasić-Jokić Vesna M.
doaj   +1 more source

CHARACTERISTIC OF AIRBORNE PARTICULATE MATTER SAMPLES COLLECTED FROM TWO SEMI INDUSTRIAL SITES IN BANDUNG, INDONESIA

open access: yesIndonesian Journal of Chemistry, 2013
Air particulate matter concentrations, black carbon as well as elemental concentrations in two semi industrial sites were investigated as a preliminary study for evaluation of air quality in these areas.
Diah Dwiana Lestiani   +3 more
doaj   +1 more source

Validation of the Reliability of the Porous Structure Parameters for Activated Carbons as Evaluated on the Basis of Adsorption Isotherms from the Gaseous Phase

open access: yesAdsorption Science & Technology, 1999
Adsorption/desorption isotherms from the gaseous phase (benzene vapour, nitrogen) have been determined consecutively a number of times on the same activated carbon sample.
Bogdan J. Trznadel   +2 more
doaj   +1 more source

Ensquared Energy and Optical Centroid Efficiency in Optical Sensors: Part 1, Theory

open access: yesPhotonics, 2023
High-performance megapixel focal plane arrays with small pixels have been widely used in modern optical remote sensing, astronomical, and surveillance instruments.
Marija Strojnik   +3 more
doaj   +1 more source

Experimental assessment of large mammal population estimates from airborne thermal videography

open access: yesWildlife Biology, EarlyView.
Wildlife resource management requires reliable, fast, and affordable methods of surveying wildlife populations to develop and adaptively adjust policies. Thermal video from drones can yield high rates of detection over large areas with relative speed and safety.
Julia S. McElhinny   +7 more
wiley   +1 more source

Spatial and temporal scales in plant phenotyping for crop water stress assessment: A review

open access: yesThe Plant Phenome Journal, Volume 9, Issue 1, December 2026.
Abstract Water stress is a major limiting factor for crop productivity worldwide, and its impacts are intensifying due to climate variability and increasing water scarcity. This review focuses on the spatial and temporal scales in plant phenotyping as a critical approach to improving crop water‐stress assessment and supporting precision water ...
Daniel Kingsley Cudjoe   +3 more
wiley   +1 more source

Global Wind Field Reconstruction in the Mesosphere and Lower Thermosphere (MLT) During Geomagnetic Storms by Fusing TIDI and SABER Data: A Generative Adversarial Network (GAN) Approach

open access: yesGeoscience Data Journal, Volume 13, Issue 3, July 2026.
ABSTRACT The Mesosphere and Lower Thermosphere establish an essential connection between Earth's lower atmosphere and upper atmosphere because wind patterns essential for atmospheric movement also influence energy distribution and chemical movements during geomagnetic storms that disrupt satellite operations and space weather prediction systems.
Yunhao Si
wiley   +1 more source

The Reevaluation of MIBI as the Ligand of 99mTc-MIBI Radiopharmaceutical for Myocardial Imaging

open access: yesAtom Indonesia, 2008
Methoxy isobutyl isonitrile labelled with technetium-99m (99mTc) radionuclide can be used for the evaluation of acute myocardial infarction. The 99mTc-MIBI radiopharmaceutical is available in the lyophilized-kit, which is separately packed with its ...
Z. Nurlaila, I. Daruwati
doaj   +1 more source

Training‐Domain Gaps in Data‐Driven Ocean Color Algorithms

open access: yesGeophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Bio‐optical algorithms serve a critical role, enabling satellite‐based monitoring of the global ocean and its ecosystems. These largely empirical algorithms invert satellite measurements of water leaving reflectance (“ocean color”) to biogeochemical parameters such as chlorophyll a, but often fail to generalize beyond their training data ...
P. C. Gray   +4 more
wiley   +1 more source

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