Results 61 to 70 of about 348,476 (369)

Near-Earth Objects in the Taurid complex [PDF]

Monthly Notices of the Royal Astronomical Society, 2008
The Taurid complex consists of many substreams and has both comet 2P/Encke and several Near-Earth Objects (NEOs) moving within it. We conduct a new search for associated NEOs, investigate the orbital evolution of any identified NEO and search for meteor showers associated with these NEOs.
P. B. Babadzhanov, Iwan P. Williams, G. I. Kokhirova   +2 more
openaire   +2 more sources

Semi‐supervised classification of fundus images combined with CNN and GCN

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose Diabetic retinopathy (DR) is one of the most serious complications of diabetes, which is a kind of fundus lesion with specific changes. Early diagnosis of DR can effectively reduce the visual damage caused by DR. Due to the variety and different morphology of DR lesions, automatic classification of fundus images in mass screening can ...
Sixu Duan, Pu Huang, Min Chen, Ting Wang, Xiaolei Sun, Meirong Chen, Xueyuan Dong, Zekun Jiang, Dengwang Li   +8 more
wiley   +1 more source

Thermography of Asteroid and Future Applications in Space Missions

Applied Sciences, 2020
The Near-Earth Asteroid 162173 Ryugu is a C-type asteroid which preserves information about the ancient Solar System and is considered enriched in volatiles such as water and organics associated with the building blocks of life, and it is a potentially ...
Tatsuaki Okada
doaj   +1 more source

Near-Earth object 2012XJ112 as a source of bright bolides of achondritic nature [PDF]

, 2014
We acknowledge support from the Spanish Ministry of Science and Innovation (projects AYA2009-13227, AYA2011-26522 and AYA2009-06330-E) and Junta de Andalucia (project P09-FQM-4555).
J. Madiedo, J. Trigo-Rodríguez, I. Williams, N. Konovalova, J. Ortiz, A. Castro-Tirado, S. Pastor, J. Reyes, J. Cabrera-Cano   +8 more
semanticscholar   +1 more source

Internal structure of Near-Earth Objects

Comptes Rendus. Physique, 2005
Abstract For the purposes of mitigation, the internal structure of near-Earth objects (NEOs) remains one of the most important but least understood parameters. From a science point of view, the internal structure is equally intriguing. Knowledge of the internal structure can reveal the collisional history, and in the case of comets, may also reveal ...
Binzel, Richard P., Kofman, Wlodek
openaire   +4 more sources

COMP Report: CPQR technical quality control guidelines for use of positron emission tomography/computed tomography in radiation treatment planning

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Positron emission tomography with x‐ray computed tomography (PET/CT) is increasingly being utilized for radiation treatment planning (RTP). Accurate delivery of RT therefore depends on quality PET/CT data. This study covers quality control (QC) procedures required for PET/CT for diagnostic imaging and incremental QC required for RTP.
Ran Klein, Mike Oliver, Dan La Russa, John Agapito, Stewart Gaede, JeanPierre Bissonnette, Arman Rahmim, Carlos Uribe   +7 more
wiley   +1 more source

Image quality comparisons of coil setups in 3T MRI for brain and head and neck radiotherapy simulations

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose MRI is increasingly used for brain and head and neck radiotherapy treatment planning due to its superior soft tissue contrast. Flexible array coils can be arranged to encompass treatment immobilization devices, which do not fit in diagnostic head/neck coils. Selecting a flexible coil arrangement to replace a diagnostic coil should rely
Evangelia Kaza, Jeffrey P. Guenette, Christian V. Guthier, Steven Hatch, Alexander Marques, Lisa Singer, Jonathan D. Schoenfeld   +6 more
wiley   +1 more source

Visible Spectroscopic Observations of a Near-Earth Object, 2012 DA14 [PDF]

, 2013
We present visible spectroscopic observations of a near-earth object (NEO), 2012 DA(14). The asteroid 2012 DA(14) came close to the Earth's surface on 2013 February 15 at a distance of 27700 km. Its estimated diameter is similar to 45 m.
S. Urakawa, M. Fujii, H. Hanayama, J. Takahashi, T. Terai, Osamu Oshima   +5 more
semanticscholar   +1 more source

The multiple roles of the NlpC_P60 peptidase family in mycobacteria – an underexplored target for antimicrobial drug discovery

FEBS Letters, EarlyView.
The NlpC_P60 superfamily of peptidases is recognised by its key role in bacterial cell wall homeostasis. Recently, studies have also described the involvement of NlpC_P60‐like enzymes in bacterial competitive mechanisms and pathogenesis across several lineages.
Catharina dos Santos Silva, Marcio Vinicius Bertacine Dias   +1 more
wiley   +1 more source

Treatment planning with a 2.5 MV photon beam for radiation therapy

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose The shallow depth of maximum dose and higher dose fall‐off gradient of a 2.5 MV beam along the central axis that is available for imaging on linear accelerators is investigated for treatment of shallow tumors and sparing the organs at risk (OARs) beyond it.
Navid Khaledi, Chris Hayes, Louise Belshaw, Mark Grattan, Rao Khan, James L. Gräfe   +5 more
wiley   +1 more source