Browsing School of Physics by Title
Now showing items 1-20 of 174
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1064 nm acoustic resolution photoacoustic microscopy
(Wiley, 2018-12-03)Photoacoustic imaging is a noninvasive imaging technique having the advantages of high-optical contrast and good acoustic resolution at improved imaging depths. Light transport in biological tissues is mainly characterized ... -
The 2008 Outburst in the Young Stellar System Z CMa: The First Detection of Twin Jets
(2010)The Z CMa binary is understood to undergo both FU Orionis (FUOR) and EX Orionis (EXOR) type outbursts. While the SE component has been spectro- scopically identified as an FUOR, the NW component, a Herbig Be star, is the ... -
The 2009 multiwavelength campaign on Mrk 421: variability and correlation studies
(EDP Sciences, 2015-04-17)Aims. We perform an extensive characterization of the broadband emission of Mrk 421, as well as its temporal evolution, during the non-flaring (low) state. The high brightness and nearby location (z = 0.031) of Mrk 421 ... -
Accessing depth-resolved high spatial frequency content from the optical coherence tomography signal
(Nature Research, 2021-08-24)Optical coherence tomography (OCT) is a rapidly evolving technology with a broad range of applications, including biomedical imaging and diagnosis. Conventional intensity-based OCT provides depth-resolved imaging with a ... -
Accounting for the fringe magnetic field from the bending magnet in a Monte Carlo accelerator treatment head simulation
(American Institute of Physics, 2011)Purpose: Monte Carlo (MC) simulation can be used for accurate electron beam treatment planning and modeling. Measurement of large electron fields, with the applicator removed and secondary collimator wide open, has been ... -
Asteroid Day: a vehicle for raising public awareness of astronomy and space exploration among primary students in Ireland
(NUI Galway, 2018-03-24)Asteroid Day is a global awareness campaign which takes place annually to learn about asteroids, their impact and to increase awareness on how we can protect the Earth from future asteroid impacts. At the event students ... -
Audio frequency in vivo optical coherence elastography
(IOP Publishing, 2009-05-06)We present a new approach to optical coherence elastography (OCE), which probes the local elastic properties of tissue by using optical coherence tomography to measure the effect of an applied stimulus in the audio frequency ... -
Building a European exposure science strategy
(Nature Publishing Group, 2019-12-02)Exposure information is a critical element in various regulatory and non-regulatory frameworks in Europe and elsewhere. Exposure science supports to ensure safe environments, reduce human health risks, and foster a sustainable ... -
Characterising glyphosate exposures among amenity horticulturists using multiple spot urine samples
(Elsevier, 2018-07-08)Background Glyphosate has recently received much public attention following its Group 2A probably carcinogenic to humans classification from the International Agency for Research on Cancer. Despite the widespread ... -
Characterization of an amplified piezoelectric actuator for multiple reference optical coherence tomography
(Optica, 2018-08-30)The characterization of an amplified piezoelectric actuator (APA) as a new axial scanning method for multiple-reference optical coherence tomography (MR-OCT) is described. MR-OCT is a compact optical imaging device based ... -
Characterization of an extendable multi-leaf collimator for clinical electron beams
(Institute of Physics, 2011)An extendable x-ray multi-leaf collimator (eMLC) is investigated for collimation of electron beams on a linear accelerator. The conventional method of collimation using an electron applicator is impractical for conformal, ... -
Characterization of nanosensitive multifractality in submicron scale tissue morphology and its alteration in tumor progression
(Society of Photo-optical Instrumentation Engineers, 2021-01-11)Significance: Assessment of disease using optical coherence tomography is an actively investigated problem, owing to many unresolved challenges in early disease detection, diagnosis, and treatment response monitoring. The ... -
Circular polarization of synchrotron radiation in high magnetic fields
(Oxford University Press, 2015-04-17)The general model for incoherent synchrotron radiation has long been known, with the first theory being published by Westfold in 1959 and continued by Westfold and Legg in 1968. When this model was first developed, it was ... -
CO abundances in a protostellar cloud: freeze-out and desorption in the envelope and outflow of L483
(2007)CO isotopes are able to probe the different components in protostellar clouds. These components, core, envelope and outflow have distinct physical conditions and sometimes more than one component contributes to the observed ... -
Concentrations of perfluoroalkyl substances in human milk from Ireland: Implications for adult and nursing infant exposure
(Elsevier, 2019-12-20)Concentrations of 10 perfluoroalkyl substances (PFASs) were measured in 16 pools of human milk from Ireland. Only four PFASs were detected (PFOA, PFNA, PFHxS and PFOS), with concentrations dominated by PFOA which was ... -
Concentrations of polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) and polychlorinated biphenyls (PCBs) in human milk from Ireland: temporal trends and implications for nursing infant exposure
(OAE Publishing Inc, 2021-11-19)Aim: The elucidation of temporal trends in human exposure to polychlorinated biphenyls (PCBs) and 17 polychlorinated dibenzo-p-dioxins and furans (PCDD/Fs) since the previous Irish human milk surveys and to evaluate the ... -
A connection between star formation activity and cosmic rays in the starburst galaxy M 82
(2009)Although Galactic cosmic rays (protons and nuclei) are widely believed to be dominantly accelerated by the winds and supernovae of massive stars, definitive evidence of this origin remains elusive nearly a century after ... -
Cutoff in the TeV Energy Spectrum of Markarian 421 During Strong Flares in 2001
(2001)Exceptionally strong and long lasting flaring activity of the blazar Markarian 421 (Mrk 421) occurred between January and March 2001. Based on the excellent signal-to-noise ratio of the data we derive the energy spectrum ... -
Dark spot, Spiral waves and the SW Sex behaviour: it is all about UX Ursae Majoris
(2010)We present an analysis of time-resolved, medium resolution optical spectroscopic observations of UX UMa in the blue (3920-5250 A) and red (6100-7200 A) wavelength ranges, that were obtained in April 1999 and March 2008 ... -
Deep optical observations of the interaction of the SS 433 microquasar jet with the W 50 radio continuum shell
(2007)Four mosaics of deep, continuum-subtracted, CCD images have been obtained over the extensive galactic radio continuum shell, W 50, which surrounds the remarkable stellar system SS 433. Two of these mosaics in the Halpha+[N ...