Search results for "Glare"

<title>Factors affecting intraocular light scattering from different color straylight sources</title>

2008

Important optical parameter of the eye is intraocular light scattering. Straylight can reduce visual acuity, contrast sensitivity. It is one of the main factors for glare, especially for drivers at night, when there is light source some distance away from the fixation point. There are many factors, which can affect amount of light scattering in the eye. To assess the effect of the color of the straylight source on retinal image quality at different light scattering levels, retinal straylight was measured with and without light scattering occluder. Red, green and blue colors were choosed for straylight source. Psychophysical and electrophysiological methods were used to evaluate light scatte…

Design and use of a Fatigue Test Machine in Plane Bending for Composite Specimens and Bonded Joints

2011

Polymeric and composites materials are increasingly used in industry as structural parts, so that specific information on their mechanical properties "at long term" (creep, relaxation, fatigue) are requested. The design and implementation of these components also requires that they are permanently connected together to perform certain functions. The use of adhesives in structural joints has increased over recent years thanks to the continuous development by companies which provide the market with adhesive having better and better mechanical properties. The main areas relate to the aerospace, aeronautical and automotive industries, where requirements are required for lightness and reliabilit…

¿Un pasaje teatral dentro del "Poema del Cid"?

1968

Aspects and issues of daylighting assessment: A review study

2016

Abstract Proper assessment of indoor daylighting conditions can significantly reduce energy consumption due to artificial lighting and can improve indoor visual comfort. This paper gives a critical review of the fundamental aspects of daylighting indices with the aim to provide a broad overview of methods and indices available to assess daylighting from varying points of view. Assessments cover distribution, availability over time and in specific climatic contexts, uniformity in the space, visual comfort issues and the relations between each of these aspects and a proper building and lighting design. A special focus on the assessment of indoor spatial and temporal uniformity is given. An an…

Xerlovita, Andarríos bastardo (VER0000104)

Altres noms vulgars: Wood sandpiper (Anglès), Chevalier sylvain (Francès), Bruchwasserläufer (Alemany) Gabinet de Vertebrats (Departament de Zoologia), Facultat de Ciències Biològiques (Campus de Burjassot), C/ Doctor Moliner, s/n, Bloque B. 5é plant, Burjassot (Valencia). Armari: 8-1 Albufera de Valencia

IS THE WOOD SANDPIPER TRINGA GLAREOLA (Aves Scolopacidae) REGULAR WINTERING IN SICILY?

2018

The Wood Sandpiper Tringa glareola is a relatively common wader species breeding in Scandinavia (except the South) and further East in Finland, the Baltic States and Russia, all the way to the Bering Strait (CRAMP & SIMMONS, 1983) and from 1969 irregular breeding in North America, Aleutine islands (WHITE et al., 1974). According to data reported in bibliography it is considered as an occasional wintering, a transaharan migrant common during migrations, but irregular in winter (BRICHETTI & FRACASSO, 2015). The species is subdivided into four biogeographic populations. A waterbird “population” can be defined as a distinct assemblage of individuals which does not experience significant…

Objective and subjective evaluation of photic phenomena after monofocal and multifocal intraocular lens implantation11The authors have no commercial …

1999

Abstract Objective To objectively measure and compare halo, flicker, and glare disability in pseudophakic eyes with monofocal (MONO) and multifocal (MULTI) intraocular lenses (IOLs) with respect to the influence of corneal surface quality, astigmatism, and age. Design Prospective case series. Participants This clinical trial involved 28 eyes of 28 patients after small-incision cataract surgery with a MONO silicone IOL and 28 eyes of 28 patients with zonal-progressive silicone IOL. Intervention A computer program objectively determined halo, glare, and flicker. Corneal surface quality and astigmatism were measured using computerized videokeratography. Ray-tracing analysis was performed based…

Colour vision experimental studies in teaching of optometry

2005

Following aspects related to human colour vision are included in experimental lessons for optometry students of University of Latvia. Characteristics of coloured stimuli (emitting and reflective), determination their coordinates in different colour spaces. Objective characteristics of transmitting of colour stimuli through the optical system of eye together with various types of appliances (lenses, prisms, Fresnel prisms). Psychophysical determination of mono- and polychromatic stimuli perception taking into account physiology of eye, retinal colour photoreceptor topography and spectral sensitivity, spatial and temporal characteristics of retinal receptive fields. Ergonomics of visual perce…

IL PIRO PIRO BOSCHERECCIO TRINGA GLAREOLA IN ITALIA È UNO SVERNANTE REGOLARE

2019

The Wood Sandpiper,Tringa glareola, is a regular wintering species in Italy. We revised wintering status of Wood Sandpiper analysing 75 sightings (99 individuals) from December 2001 until January 2019. Data were collected from direct monitoring in Latium and Sicily and integrated by bibliography and national/regional data base. The species is regularly wintering with an estimate population of 1-9 individuals per year (mean value 1.32 individuals/sighting; DS=0.71). Tringa glareola was recorded in 40 sites, 20 Provinces and 10 Regions. Preferred wintering places are in Latium, Sicily and Sardinia. Utilised sites during last wintering seasons are increasing.

Expansion of rDNA and pericentromere satellite repeats in the genomes of bank voles Myodes glareolus exposed to environmental radionuclides

2021

Abstract Altered copy number of certain highly repetitive regions of the genome, such as satellite DNA within heterochromatin and ribosomal RNA loci (rDNA), is hypothesized to help safeguard the genome against damage derived from external stressors. We quantified copy number of the 18S rDNA and a pericentromeric satellite DNA (Msat‐160) in bank voles (Myodes glareolus) inhabiting the Chernobyl Exclusion Zone (CEZ), an area that is contaminated by radionuclides and where organisms are exposed to elevated levels of ionizing radiation. We found a significant increase in 18S rDNA and Msat‐160 content in the genomes of bank voles from contaminated locations within the CEZ compared with animals f…