Results 21 to 30 of about 491,001 (407)

Lidar reveals activity anomaly of malaria vectors during pan-African eclipse

Science Advances, 2020
Free flying mosquitoes in the Tanzanian countryside confused by eclipse were classified by novel laser radar surveillance. Yearly, a quarter billion people are infected and a half a million killed by the mosquito-borne disease malaria.
M. Brydegaard, S. Jansson, E. Malmqvist, Yeromin P. Mlacha, Alem Gebru, F. Okumu, G. Killeen, C. Kirkeby   +7 more
semanticscholar   +1 more source

Volume staging for arteriovenous malformation SRS treatment using VMAT

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Volume staging involves dividing the target volume into smaller parts and treating each part separately. In this study, the feasibility of volume‐staged stereotactic radiosurgery (VS‐SRS) on a linear accelerator using volumetric modulated arc therapy (VMAT) and a frameless patient positioning system is investigated.
Claudia Mendez, Ermias Gete
wiley   +1 more source

Effect of different noise reduction techniques and template matching parameters on markerless tumor tracking using dual‐energy imaging

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose To evaluate the impact of various noise reduction algorithms and template matching parameters on the accuracy of markerless tumor tracking (MTT) using dual‐energy (DE) imaging. Methods A Varian TrueBeam linear accelerator was used to acquire a series of alternating 60 and 120 kVp images (over a 180° arc) using fast kV switching, on ...
Mandeep Kaur, Peter Wagstaff, Hassan Mostafavi, Mathias Lehmann, Daniel Morf, Liangjia Zhu, Hyejoo Kang, Michal Walczak, Matthew M. Harkenrider, John C. Roeske   +9 more
wiley   +1 more source

Evaluation of an EPID in vivo monitoring system using local and external independent audit measurements

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose The aim of this work was to evaluate the SunCHECK PerFRACTION, the software for in vivo monitoring using EPID images. Materials/Methods First, the PerFRACTION ability to detect errors was investigated simulating two situations: (1) variation of LINAC output and (2) variation of the phantom thickness.
Samuel Ramalho Avelino, Juliana Rosada Dias, Taís Marques Peron, Gabriel Souza Vidal   +3 more
wiley   +1 more source

Identifying Candidate Atmospheres on Rocky M Dwarf Planets via Eclipse Photometry [PDF]

Astrophysical Journal, 2019
Most rocky planets in the galaxy orbit a cool host star, and there is large uncertainty among theoretical models whether these planets can retain an atmosphere.
D. Koll, M. Malik, M. Mansfield, E. Kempton, E. Kite, D. Abbot, J. Bean   +6 more
semanticscholar   +1 more source

New eclipsing binaries with mercury-manganese stars [PDF]

, 2021
Eclipsing binary stars are rare and extremely valuable astrophysical laboratories that make possible precise determination of fundamental stellar parameters. Investigation of early-type chemically peculiar stars in eclipsing binaries provides important information for understanding the origin and evolutionary context of their anomalous surface ...
arxiv   +1 more source

Stubborn Mining: Generalizing Selfish Mining and Combining with an Eclipse Attack

European Symposium on Security and Privacy, 2016
Selfish mining, originally discovered by Eyal et al. [9], is a well-known attack where a selfish miner, under certain conditions, can gain a disproportionate share of reward by deviating from the honest behavior.
Kartik Nayak, Srijan Kumar, Andrew K. Miller, E. Shi   +3 more
semanticscholar   +1 more source

Extending Validity of the Bacterial Cell Cycle Model through Thymine Limitation: A Personal View

Life, 2023
The contemporary view of bacterial physiology was established in 1958 at the “Copenhagen School”, culminating a decade later in a detailed description of the cell cycle based on four parameters.
Arieh Zaritsky
doaj   +1 more source

Meteorological impacts of the total solar eclipse of 21 August 2017 [PDF]

, 2018
A solar eclipse presents many opportunities for examining the impact of the reduction in solar radiation upon meteorological conditions, particularly so as accurate predictions of the circumstances and extent of the eclipse well before the event enable ...
Anderson, Aplin, Botley, Burt, Cassini, Diamond, Gray, Gross, Hanna, Hanna, Harrison, Lebon, Prenosil, Winkler   +13 more
core   +1 more source

An empirical study of near-surface air temperature time lags and delay function during the longest total solar eclipse of the 21st century at Tianhuangping (Zhejiang), China, under cloudy conditions

Meteorologische Zeitschrift, 2022
Among the different ways that the solar heating of the Earth's surface can be interrupted, the most impressive is by a solar eclipse. While the solar radiation drops rapidly, the near-surface air temperature responds more gradually, typically reaching a ...
Marcos A. Peñaloza-Murillo, Michael T. Roman, Jay M. Pasachoff, Abouazza Elmhamdi   +3 more
doaj   +1 more source