Results 31 to 40 of about 372,775 (305)

Multiple gene aberrations and breast cancer: lessons from super-responders. [PDF]

open access: yes, 2015
BackgroundThe presence of multiple molecular aberrations in patients with breast cancer may correlate with worse outcomes.Case presentationsWe performed in-depth molecular analysis of patients with estrogen receptor-positive, HER2-negative, hormone ...
Atkins, Johnique T   +6 more
core   +2 more sources

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

Cyto–Genotoxic Effect Causing Potential of Polystyrene Micro-Plastics in Terrestrial Plants

open access: yesNanomaterials, 2022
The polystyrene micro-plastics (Ps-MPs) is one of the leading pollutants found in both aquatic and terrestrial ecosystems. While most of the studies on the morphology and cyto-toxicity of MPs have been based on aquatic organisms, their effects on ...
Mandeep Kaur, Ming Xu, Lin Wang
doaj   +1 more source

Strehl ratio and optimum focus of high-numerical-aperture beams [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2007
We analytically calculate the focus setting for a beam with a high numerical aperture (NA) that optimizes its Strehl ratio in the case of small aberrations up to the ’just’ diffraction-limited value (Strehl ratio ≥0.80).
Janssen Augustus J.E.M.   +3 more
doaj   +1 more source

Speckle noise reduction techniques for high-dynamic range imaging [PDF]

open access: yes, 2007
High-dynamic range imaging from space in the visible, aiming in particular at the detection of terrestrial exoplanets, necessitates not only the use of a coronagraph, but also of adaptive optics to correct optical defects in real time.
Belikov   +23 more
core   +3 more sources

Central and Peripheral Ocular High-Order Aberrations and Their Relationship with Accommodation and Refractive Error: A Review

open access: yesVision, 2023
High-order aberrations (HOAs) are optical defects that degrade the image quality. They change with factors such as pupil diameter, age, and accommodation.
Jessica Gomes   +2 more
doaj   +1 more source

Holographic aberration correction: optimising the stiffness of an optical trap deep in the sample [PDF]

open access: yes, 2011
We investigate the effects of 1st order spherical aberration and defocus upon the stiffness of an optical trap tens of μm into the sample. We control both these aberrations with a spatial light modulator. The key to maintain optimum trap stiffness over a
Bowman   +22 more
core   +1 more source

Do Peripheral Refraction and Aberration Profiles Vary with the Type of Myopia? - An Illustration Using a Ray-Tracing Approach

open access: yesJournal of Optometry, 2009
Purpose: Myopia is considered to be the most common refractive error occurring in children and young adults, around the world. Motivated to elucidate how the process of emmetropization is disrupted, potentially causing myopia and its progression ...
Ravi C. Bakaraju   +3 more
doaj   +1 more source

Dielectric Metalens: Properties and Three-Dimensional Imaging Applications

open access: yesSensors, 2021
Recently, optical dielectric metasurfaces, ultrathin optical skins with densely arranged dielectric nanoantennas, have arisen as next-generation technologies with merits for miniaturization and functional improvement of conventional optical components ...
Sun-Je Kim   +7 more
doaj   +1 more source

Exoplanet detection with simultaneous spectral differential imaging: effects of out-of-pupil-plane optical aberrations [PDF]

open access: yes, 2006
Imaging faint companions (exoplanets and brown dwarfs) around nearby stars is currently limited by speckle noise. To efficiently attenuate this noise, a technique called simultaneous spectral differential imaging (SSDI) can be used.
Macintosh, Bruce   +2 more
core   +2 more sources

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