Results 41 to 50 of about 1,357,413 (328)

XMM-Newton observations of the first unidentified TeV gamma-ray source TeV J2032+4130 [PDF]

, 2007
(abridged) The first unidentified very high energy gamma ray source (TeV J2032+4130) in the Cygnus region has been the subject of intensive search for a counterpart source at other wavelengths.
A. I. D. Hoffmann, A. Santangelo, Abdo, Albacete Colombo, Anchordoqui, Arnaud, Bednarek, Butt, Butt, D. Horns, Domingo-Santamaría, F. A. Aharonian, G. P. Rowell, Hartman, Horns, Horns, Kelner, Knödlseder, Lang, Mukherjee, Paredes, Pradas, Read, Reimer, Waldron   +24 more
core   +1 more source

The Legacy of the TTASAAN Report—Premature Conclusions and Forgotten Promises: A Review of Policy and Practice Part I

Frontiers in Neurology, 2022
Brain perfusion single photon emission computed tomography (SPECT) scans were initially developed in 1970's. A key radiopharmaceutical, hexamethylpropyleneamine oxime (HMPAO), was originally approved in 1988, but was unstable. As a result, the quality of
Dan G. Pavel, Dan G. Pavel, Theodore A. Henderson, Theodore A. Henderson, Theodore A. Henderson, Theodore A. Henderson, Simon DeBruin, Simon DeBruin   +7 more
doaj   +1 more source

Evaluation of Color Performance of Video Cameras for Poultry House Monitoring Applications [PDF]

Brazilian Journal of Poultry Science
This study examined the critical role of image color accuracy in surveillance systems, particularly in poultry houses, using affordable video cameras. Variations in commercial camera color processing can lead to inconsistent metrics.
CY Chou, TH Lin
doaj   +1 more source

Remote Assessment of Ataxia Severity in SCA3 Across Multiple Centers and Time Points

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Spinocerebellar ataxia type 3 (SCA3) is a genetically defined ataxia. The Scale for Assessment and Rating of Ataxia (SARA) is a clinician‐reported outcome that measures ataxia severity at a single time point. In its standard application, SARA fails to capture short‐term fluctuations, limiting its sensitivity in trials.
Marcus Grobe‐Einsler, Vivian Maas, Arian Taheri Amin, Jennifer Faber, Tamara Schaprian, Katharina Hill, Matthis Synofzik, Lisa H. Graf, Heike Jacobi, Manuela Lima, Ana F. Ferreira, Bart P. van de Warrenburg, Ilse H. J. Willemse, Dagmar Timmann, Andreas Thieme, Paola Giunti, Hector Garcia‐Moreno, Magda M. Santana, Jeannette Hübener‐Schmid, Elin H. Davies, Thomas Klockgether   +20 more
wiley   +1 more source

Comparison of knife-edge and multi-slit camera for proton beam range verification by Monte Carlo simulation

Nuclear Engineering and Technology, 2019
The mechanical-collimation imaging is the most mature technology in prompt gamma (PG) imaging which is considered the most promising technology for beam range verification in proton therapy. The purpose of the present study is to compare the performances
Jong Hoon Park, Sung Hun Kim, Youngmo Ku, Hyun Su Lee, Chan Hyeong Kim, Dong Ho Shin, Jong Hwi Jeong   +6 more
doaj   +1 more source

State-of-the-art and challenges of non-destructive techniques for in-situ radiological characterization of nuclear facilities to be dismantled

Nuclear Engineering and Technology, 2021
This paper reports on the state-of-the-art of the main non-destructive assay (NDA) techniques usually used for in-situ radiological characterization of nuclear facilities subject to a decommissioning programme. For the sake of clarity and coherence, they
Khalil Amgarou, Margarita Herranz
doaj   +1 more source

Distribution of Electrical Resistivity in Single Carbon Fiber Filaments and Its Correlation With Tensile Modulus

Advanced Engineering Materials, EarlyView.
A statistical framework is applied to quantify the distribution of electrical resistivity among individual filaments of two commercially available carbon fiber types. Correlations between filament resistivity, tensile modulus, and diameter are examined and complemented by TEM analysis to provide new insight into filament‐level variability relevant for ...
Nils Wieja, Daniel Sebastian Wolz, Philip Johannes Steinbild, Markus Löffler, Darius Pohl, Jan Wolf, Anja Winkler, Thomas Behnisch, Bernd Rellinghaus, Maik Gude   +9 more
wiley   +1 more source

Similarity analysis of pixelated CdTe semiconductor gamma camera image using a quadrant bar phantom for nuclear medicine: Monte Carlo simulation study

Nuclear Engineering and Technology, 2021
In the nuclear medicine imaging, quality control (QC) process using quadrant bar phantom is fundamental aspect of evaluating the spatial resolution. In addition, QC process of gamma camera is performed by daily or weekly. Recently, Monte Carlo simulation
Chan Rok Park, Seong-Hyeon Kang, Youngjin Lee   +2 more
doaj   +1 more source

A New Analysis Method for Reconstructing the Arrival Direction of TeV Gamma-rays Using a Single Imaging Atmospheric Cherenkov Telescope [PDF]

, 2000
We present a method of atmospheric Cherenkov imaging which reconstructs the unique arrival direction of TeV gamma rays using a single telescope. The method is derived empirically and utilizes several features of gamma-ray induced air showers which ...
Akerlof, Buckley, Cawley, Connaughton, Fomin, J.H. Buckley, Le Bohec, Mohanty, Punch, Quinn, R.W. Lessard, Reynolds, S. Le Bohec, V. Connaughton, Weekes, Weekes   +15 more
core   +2 more sources

Patterning the Void: Combining L‐Systems with Archimedean Tessellations as a Perspective for Tissue Engineering Scaffolds

Advanced Functional Materials, EarlyView.
This study introduces a novel multi‐scale scaffold design using L‐fractals arranged in Archimedean tessellations for tissue regeneration. Despite similar porosity, tiles display vastly different tensile responses (1–100 MPa) and deformation modes. In vitro experiments with hMSCs show geometry‐dependent growth and activity. Over 55 000 tile combinations
Maria Kalogeropoulou, Kenny A. van Kampen, Pierpaolo Fucile, Carlos Mota, Lorenzo Moroni   +4 more
wiley   +1 more source