Results 31 to 40 of about 6,785,321 (317)

Crystal structure of diethyl 3,3′-[(2-fluorophenyl)methylidene]bis(1H-indole-2-carboxylate)

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2017
In the title compound, C29H25FN2O4, the mean planes of the two indole ring systems (r.m.s. deviations = 0.1392 and 0.0115 Å) are approximately perpendicular to one another, subtending a dihedral angle of 86.0 (5)°; the benzene ring is twisted with ...
Xin-Hua Lu   +4 more
doaj   +1 more source

Comprehensive phenotyping revealed transient startle response reduction and histopathological gadolinium localization to perineuronal nets after gadodiamide administration in rats

open access: yesScientific Reports, 2020
Gadolinium based contrast agents (GBCAs) are widely used in clinical MRI since the mid-1980s. Recently, concerns have been raised that trace amounts of Gadolinium (Gd), detected in brains even long time after GBCA application, may cause yet unrecognized ...
Johanna Habermeyer   +14 more
doaj   +1 more source

The periprocedural myocardial infarction and probability of the developing of the contrast-induced acute kidneys injury in clinical practice. Case report

open access: yesТерапевтический архив, 2021
Nowadays, taking into account the number of elderly patients with sеveral associated diseases requiring percutaneous transluminal balloon coronary angioplasty (PTCA), the risk of the development of unwanted complications is also growing.
Olga A. Dmitrieva   +5 more
doaj   +1 more source

The time course of adaptation to spatial contrast [PDF]

open access: yes, 1991
We explored the buildup and decay of threshold elevation during and after adaptation to sinewave gratings in a series of experiments investigating the effects of adapting time, adapting contrast, spatial frequency and retinal eccentricity.
Harris, J. P.   +3 more
core   +1 more source

Binocular summation of contrast remains intact in strabismic amblyopia [PDF]

open access: yes, 2007
PURPOSE. Strabismic amblyopia is typically associated with several visual deficits, including loss of contrast sensitivity in the amblyopic eye and abnormal binocular vision.
Meese, Tim S.   +4 more
core   +1 more source

Optimization of Iron Oxide Tracer Synthesis for Magnetic Particle Imaging

open access: yesNanomaterials, 2018
The optimization of iron oxide nanoparticles as tracers for magnetic particle imaging (MPI) alongside the development of data acquisition equipment and image reconstruction techniques is crucial for the required improvements in image resolution and ...
Sabina Ziemian   +5 more
doaj   +1 more source

Selectives (“topic markers”) on subordinate clauses

open access: yesLinguistics, 2022
This typological study based on data from a parallel text corpus is a two-step investigation of selectives (“topic markers”). First, a set of selectives in 81 languages from all continents is compiled on the basis of their occurrence with emphatic ...
Wälchli Bernhard
doaj   +1 more source

Visual function tests for glaucoma practice - What is relevant?

open access: yesIndian Journal of Ophthalmology, 2022
Glaucoma represents one of the most important ocular diseases causing irreversible ganglion cell death. It is one of the most common causes of visual impairment and morbidity in the elderly population.
Aparna Rao   +3 more
doaj   +1 more source

Effect of Contrast and Adaptation on the Perception of the Direction and Speed of Drifting Gratings [PDF]

open access: yes, 1994
Three experiments were conducted to analyse the effect of contrast and adaptation state on the ability of human observers to discriminate the motion of drifting gratings.
Müller, Rolf   +2 more
core   +1 more source

Training People to Think in Opposites Facilitates the Falsification Process in Wason’s Rule Discovery Task

open access: yesJournal of Intelligence, 2023
With reference to Wason’s 2-4-6 rule discovery task, this study investigated the effects of a simple training session that prompted participants to “think in opposites”.
Erika Branchini   +2 more
doaj   +1 more source

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