Results 21 to 30 of about 208,047 (254)

Full‐Color Metaoptical Imaging in Visible Light

open access: yesAdvanced Photonics Research, 2022
Metaoptics is a fast‐growing field with the potential to dramatically miniaturize image sensors. Unlike many other scientific endeavors, metaoptics are poised to make a technological and commercial impact within a few decades of inception. In particular,
Luocheng Huang   +3 more
doaj   +1 more source

The Effect of a Parabolic Apodizer on Improving the Imaging of Optical Systems with Coma and Astigmatism Aberrations

open access: yesPhotonics, 2023
We present the results of improving resolution in the imaging of two closely spaced point sources with an optical system under the influence of apodization and different types of aberrations. In particular, we consider the effect of coma and astigmatism,
Andra Naresh Kumar Reddy   +3 more
doaj   +1 more source

Detection of chromosome aberrations in metaphase and interphase tumor cells by in situ hybridization using chromosome-specific library probes [PDF]

open access: yes, 1988
Chromosome aberrations in two glioma cell lines were analyzed using biotinylated DNA library probes that specifically decorate chromosomes 1, 4, 7, 18 and 22 from pter to qter.
Cremer, Thomas   +4 more
core   +1 more source

Microfluctuations of wavefront aberrations of the eye [PDF]

open access: yes, 2004
To investigate fluctuations in the wavefront aberrations of the eye and their relation to pulse and respiration frequencies we used a wavefront sensor to measure the dynamics of the Zernike aberrations up to the polynomial fourth radial order ...
Zhu, Mingxia   +2 more
core   +1 more source

Inner Leaf Gel of Aloe striata Induces Adhesion-Reducing Morphological Hyphal Aberrations

open access: yesJournal of Fungi, 2018
Fungi, particularly molds that are cosmopolitan in soils, are frequent etiologic agents of opportunistic mycoses. Members of the Fusarium solani and Fusarium oxysporum species complexes are the most commonly implicated etiologic agents of opportunistic ...
Gloria Wada, Michael Vincent, Marcia Lee
doaj   +1 more source

Wave front aberrations and patient satisfaction of aspheric intraocular lenses

open access: yesJournal of the Egyptian Ophthalmological Society, 2018
Aim The aim was to study postoperative wave front higher order aberrations of eyes implanted with aspheric intraocular lens (IOL) in comparison with those with standard spherical IOL and to assess the subjective satisfaction in relation to both IOL ...
Ismail A.N Omar
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

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

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

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