Results 91 to 100 of about 2,594,639 (259)

Marathon adaptation to spatial contrast: Saturation in sight [PDF]

, 1985
The contrast thresholds for detecting a 6.0 c/deg vertical sinusoidal test grating were tracked during and after 3 hr inspection of a high-contrast adapting grating of the same spatial frequency and orientation.
Magnussen, S., Greenlee, Mark W.
core   +1 more source

Relationship Between Neurologic Symptoms and Signs and FMR1 Genotype in Premutation Carriers

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background and Objectives Fragile X‐associated Tremor/Ataxia Syndrome (FXTAS) is the most severe late‐onset condition caused by a premutation in the FMR1 gene, characterized by expanded CGG triplet repeats of 55–200. Clinical presentations of FXTAS, including gait ataxia, kinetic tremor, cognitive decline, and rare Parkinsonism, are linked to ...
Flora Tassone, Freddy Chafota, Miguel E. Rentería, Randi J. Hagerman, Ellery Santos, Anna Atkinson, Nicholas G. Martin, Elsdon Storey, Danuta Z. Loesch   +8 more
wiley   +1 more source

MODEL OF DECISION SUPPORT THE FORMATION PRODUCT STRATEGY AND PRODUCTION PLAN

RUDN Journal of Economics, 2016
We consider the optimization model of planning the volume and range of products manufactured by the enterprise, taking into account the non-linear nature of the objective function. Currently planning is based on models with linear objective function that
V G Anisimov, E G Anisimov, M R Gapov, T N Saurenko   +3 more
doaj  

Socio-Economic Determinants of Access to Institutional Credit among Marginal and Small Farmers in Cachar District of Assam: An Econometric Analysis

Journal of Asia Entrepreneurship and Sustainability
Inadequate access to formal agricultural credit constrains rural financial obligations and reduces productivity among India's small and marginal farmers.
Dr. Subhash Sinha, Prof. Vanlalchhawna, Prof. Lalhriatpuii   +2 more
doaj   +1 more source

Marginal commodity tax reforms: a survey [PDF]

We summarize the main features and results of the literature on marginal commodity tax reforms as initiated by Ahmad and Stern (1984) and developed further by Yitzhaki and Thirsk (1990).
Alessandro Santoro
core  

Motion processing deficits in migraine are related to contrast sensitivity [PDF]

, 2012
Background: There are conflicting reports concerning the ability of people with migraine to detect and discriminate visual motion. Previous studies used different displays and none adequately assessed other parameters that could affect performance, such ...
Hine, Trevor, Shepherd, Alex J., Hine, T.J., Shepherd, Alex J, Beaumont, Heidi M, Shepherd, Alex, Hine, Trevor J, Beaumont, H.M., Beaumont, Heidi   +8 more
core   +1 more source

Advancing Age Modulates Associations Between Cognitive Impairment and Brain Volumes in Early MS

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Cognitive impairment is common in multiple sclerosis (MS), but manifestations following the first demyelinating event are relatively unexplored. We investigated cross‐sectional associations between magnetic resonance imaging (MRI)–derived brain volumes and the presence of cognitive impairment outcomes five years after the first ...
Piriyankan Ananthavarathan, Marco Pitteri, Michael Foster, Sara Collorone, Sara Salama, Elisa Colato, Ferran Prados, Baris Kanber, Marios Yiannakas, Claudia A. M. Gandini Wheeler‐Kingshott, Indran Davagnanam, Frederik Barkhof, Declan Chard, Olga Ciccarelli, Ahmed Toosy   +14 more
wiley   +1 more source

Non-collapsibility and built-in selection bias of period-specific and conventional hazard ratio in randomized controlled trials

BMC Medical Research Methodology
Background The hazard ratio of the Cox proportional hazards model is widely used in randomized controlled trials to assess treatment effects. However, two properties of the hazard ratio including the non-collapsibility and built-in selection bias need to
Helen Bian, Menglan Pang, Guanbo Wang, Zihang Lu   +3 more
doaj   +1 more source

Aberration change after scleral lens wear in eyes with pellucid marginal degenerations

Indian Journal of Ophthalmology
Purpose: To investigate the impact of scleral lenses (SLs) on higher-order aberrations (HOAs), corrected distance visual acuity (CDVA), and contrast sensitivity (CS) in pellucid marginal degeneration (PMD) eyes.
Ronit Dutta, Geetha Iyer, Bhaskar Srinivasan, Asif Iqbal   +3 more
doaj   +1 more source

The NOTCH pathway is recurrently mutated in diffuse large B-cell lymphoma associated with hepatitis C virus infection

Haematologica, 2015
Hepatitis C virus has been found to be associated with B-cell non-Hodgkin lymphomas, mostly marginal zone lymphomas and diffuse large B-cell lymphoma. Deregulation of signaling pathways involved in normal marginal zone development (NOTCH pathway, NF-κB ...
Luca Arcaini, Davide Rossi, Marco Lucioni, Marta Nicola, Alessio Bruscaggin, Valeria Fiaccadori, Roberta Riboni, Antonio Ramponi, Virginia V. Ferretti, Stefania Cresta, Gloria Margiotta Casaluci, Maurizio Bonfichi, Manuel Gotti, Michele Merli, Aldo Maffi, Mariarosa Arra, Marzia Varettoni, Sara Rattotti, Lucia Morello, Maria Luisa Guerrera, Roberta Sciarra, Gianluca Gaidano, Mario Cazzola, Marco Paulli   +23 more
doaj   +1 more source