Results 21 to 30 of about 514,785 (377)

Compact Aberration-Free Relay-Imaging Multi-Pass Layouts for High-Energy Laser Amplifiers

open access: yesApplied Sciences, 2016
We present the results from a theoretical investigation of laser beam propagation in relay imaging multi-pass layouts, which recently found application in high-energy laser amplifiers.
Jörg Körner   +2 more
doaj   +1 more source

Spatial Planning as a Public Management Tool in Poland: Premises and Reality

open access: yesAnnales Universitatis Mariae Curie-Skłodowska Sectio H, Oeconomia, 2023
The aim of this paper is to assess the functioning of spatial planning in Poland in the context of public management objectives. Drawing on the concepts of New Public Management, we use the category of stakeholders and public value generated for ...
Bogusław Gulski   +1 more
doaj   +1 more source

Epigenetic aberrations and cancer [PDF]

open access: yes, 2006
The correlation between epigenetic aberrations and disease underscores the importance of epigenetic mechanisms.
Brown, Mark A., Ducasse, Miryam
core   +3 more sources

Optical Correction of Keratoconus with a Scleral Gas-Permeable Lenses

open access: yesOftalʹmologiâ, 2019
The optical properties of the cornea are determined by its ability to refract and transmit light. Keratoconus changes cornea’s shape, the surface of the cornea becomes irregular, which leads to a violation of light refraction and the occurrence of ...
A. V. Myagkov   +4 more
doaj   +1 more source

Biomarkers of leukemia risk: benzene as a model. [PDF]

open access: yes, 1998
Although relatively rare, leukemias place a considerable financial burden on society and cause psychologic trauma to many families. Leukemia is the most common cancer in children.
Smith, MT, Zhang, L
core   +3 more sources

Impact of tear optics on the repeatability of Pentacam AXL wave and iTrace in measuring anterior segment parameters and aberrations

open access: yesIndian Journal of Ophthalmology, 2022
Purpose: To assess impact of tear optics on repeatability of a Scheimpflug device with a Hartmann Shack aberrometer and a ray tracing aberrometer. Methods: One hundred healthy and 100 postrefractive surgery eyes underwent dry eye evaluation including ...
GairikKundu   +6 more
doaj   +1 more source

Punctuated evolution of canonical genomic aberrations in uveal melanoma

open access: yesNature Communications, 2018
Cancer is thought to arise through the accumulation of genomic aberrations evolving under Darwinian selection. However, it remains unclear when the aberrations associated with metastasis emerge during tumor evolution.
Matthew G. Field   +7 more
semanticscholar   +1 more source

Modeling low order aberrations in laser guide star adaptive optics systems [PDF]

open access: yes, 2007
When using a laser guide star (LGS) adaptive optics (AO) system, quasi-static aberrations are observed between the measured wavefronts from the LGS wavefront sensor (WFS) and the natural guide star (NGS) WFS.
Bouchez, Antonin H.   +2 more
core   +1 more source

PRODUCIBILITY ANALYSIS OF LENS SYSTEM DURING OPTICAL DESIGN STAGE [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2020
Subject of Research. The paper presents the idea of combining various stages of production of optical devices in a single logical sequence from the design of optical elements, through the mechanical and technological production stages, to the calculation
Irina L. Livshits, Oliver Faehnle
doaj   +1 more source

Genomic alterations in primary gastric adenocarcinomas correlate with clinicopathological characteristics and survival. [PDF]

open access: yes, 2004
Background & aimsPathogenesis of gastric cancer is driven by an accumulation of genetic changes that to a large extent occur at the chromosomal level. In order to investigate the patterns of chromosomal aberrations in gastric carcinomas, we performed
Albertson, Donna   +7 more
core   +3 more sources

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