Results 21 to 30 of about 65,394 (259)

Inventory and Assessment of Cultural Resources Above the 1,551.5-Foot Contour Line, Stacy Reservoir Recreation Areas, Concho, Coleman, and Runnels Counties, Texas [PDF]

open access: yes, 1988
In August and September 1986, personnel from Prewitt and Associates, Inc. conducted an inventory and assessment of cultural resources in five recreational area tracts above the conservation pool elevation of the proposed Stacy Reservoir in Concho ...
Bryan, Willliam A., Collins, Michael B.
core   +2 more sources

Optimal MRI sequences for 68Ga-PSMA-11 PET/MRI in evaluation of biochemically recurrent prostate cancer. [PDF]

open access: yes, 2017
BackgroundPET/MRI can be used for the detection of disease in biochemical recurrence (BCR) patients imaged with 68Ga-PSMA-11 PET. This study was designed to determine the optimal MRI sequences to localize positive findings on 68Ga-PSMA-11 PET of patients
Behr, Spencer C   +7 more
core   +1 more source

Diffusion geometry approach to efficiently remove electrical stimulation artifacts in intracranial electroencephalography [PDF]

open access: yes, 2018
Cortical oscillations, electrophysiological activity patterns, associated with cognitive functions and impaired in many psychiatric disorders can be observed in intracranial electroencephalography (iEEG).
Alagapan, Sankaraleengam   +3 more
core   +3 more sources

The effect of milk, water and lemon juice on various subdiaphragmatic activity-related artifacts in myocardial perfusion imaging

open access: yesResearch in Cardiovascular Medicine, 2015
Background: Subdiaphragmatic activity can produce subdiaphragmatic-related artifacts, which can degrade the quality of myocardial perfusion imaging (MPI).
Hadi Malek   +5 more
doaj   +1 more source

On The Nature of Variations in the Measured Star Formation Efficiency of Molecular Clouds [PDF]

open access: yes, 2018
Measurements of the star formation efficiency (SFE) of giant molecular clouds (GMCs) in the Milky Way generally show a large scatter, which could be intrinsic or observational.
Faucher-Giguère, Claude-André   +5 more
core   +2 more sources

Are constant loop widths an artifact of the background and the spatial resolution? [PDF]

open access: yes, 2007
We study the effect of the coronal background in the determination of the diameter of EUV loops, and we analyze the suitability of the procedure followed in a previous paper (L\'opez Fuentes, Klimchuk & D\'emoulin 2006) for characterizing their expansion
Demoulin, P.   +2 more
core   +3 more sources

A Unified Scaling Law in Spiral Galaxies [PDF]

open access: yes, 2000
We investigate the origin of a unified scaling relation in spiral galaxies. Observed spiral galaxies are spread on a plane in the three-dimensionallogarithmic space of luminosity L, radius R and rotation velocity V.
de Jong R. S.   +16 more
core   +2 more sources

Deep LOFAR 150 MHz imaging of the Bo\"otes field: Unveiling the faint low-frequency sky [PDF]

open access: yes, 2018
We have conducted a deep survey (with a central rms of $55\mu\textrm{Jy}$) with the LOw Frequency ARray (LOFAR) at 120-168 MHz of the Bo\"otes field, with an angular resolution of $3.98^{''}\times6.45^{''}$, and obtained a sample of 10091 radio sources ($
Best, P. N.   +7 more
core   +3 more sources

John’s Equation-based Consistency Condition and Corrupted Projection Restoration in Circular Trajectory Cone Beam CT

open access: yesScientific Reports, 2017
In transmitted X-ray tomography imaging, the acquired projections may be corrupted for various reasons, such as defective detector cells and beam-stop array scatter correction problems.
Jianhui Ma   +6 more
doaj   +1 more source

Metal Artifact Reduction in CT: Where Are We After Four Decades?

open access: yesIEEE Access, 2016
Methods to overcome metal artifacts in computed tomography (CT) images have been researched and developed for nearly 40 years. When X-rays pass through a metal object, depending on its size and density, different physical effects will negatively affect ...
Lars Gjesteby   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy