Results 101 to 110 of about 514,785 (377)
Aberrations in Structured Illumination Microscopy: A Theoretical Analysis
Frontiers in Physics, 2020 In super-resolution optical microscopes, aberrations often compromise the image performances by reducing its resolution and contrast. In previous works, the aberrations in stimulated emission depletion (STED) microscopy and single-molecule localization ...
Xin Liu +12 more
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Annular objective apertures improve resolution of electron microscopes [PDF]
, 1972 Hollow-cone illumination techniques, using an annular objective aperture located behind back focal plane of objective lens, increase image contrast and minimize chromatic ...
Heinemann, K., Poppa, H. R.
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Shaped pupil design for the Gemini Planet Imager
, 2009 The Gemini Planet Imager (GPI) is an instrument designed for the Gemini South telescope to image young Jupiter-mass planets in the infrared. To achieve the high contrast needed for this, it employs an apodized pupil Lyot coronagraph (APLC) to remove most
Cady, Eric +3 more
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Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
wiley +1 more source
Wavefront aberrations in children with myopia and hyperopia before and after cycloplegia
Российский офтальмологический журнал, 2018 Purpose: a comparative study of the effect of cycloplegia on wavefront aberration in children with myopia and hyperopia. Material and methods. The study involved 20 patients (39 eyes) with myopic refraction (averagely -5.2 ± 1,5 D) and 26 patients (52 ...
E. P. Tarutta +2 more
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Aberration-corrected STEM imaging of 2D materials: Artifacts and practical applications of threefold astigmatism [PDF]
, 2020 Sergei Lopatin +9 more
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Multiple ETS family transcription factors bind mutant p53 via distinct interaction regions
FEBS Letters, EarlyView.Mutant p53 gain‐of‐function is thought to be mediated by interaction with other transcription factors. We identify multiple ETS transcription factors that can bind mutant p53 and found that this interaction can be promoted by a PXXPP motif. ETS proteins that strongly bound mutant p53 were upregulated in ovarian cancer compared to ETS proteins that ...
Stephanie A. Metcalf +6 more
wiley +1 more source
Российский офтальмологический журнал, 2018 Purpose. A combined comparative study of the impact of antiglaucomatous surgeries on the anatomical and optical parameters of the cornea.Materials and methods. The study involved 38 patients (38 eyes) aged 43 to 75 with primary open-angle glaucoma (POAG),
V. V. Neroev +2 more
doaj +1 more source
Polarization Aberrations [PDF]
The analysis of the polarization characteristics displayed by optical systems can be divided into two categories: geometrical and physical. Geometrical analysis calculates the change in polarization of a wavefront between pupils in an optical instrument.
Chipman, Russell A. +1 more
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