Results 41 to 50 of about 165,978 (305)

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy   +4 more
wiley   +1 more source

Annular Groove Phase Mask Coronagraph [PDF]

open access: yes, 2005
peer reviewedWe present a new phase mask coronagraph consisting in an optical vortex induced by a space-variant surface relief subwavelength grating. Phase mask coronagraphy is a recent technique aiming at accommodating both high dynamic and high angular
Surdej, Jean   +6 more
core   +1 more source

A Simplified Model for Optical Systems with Random Phase Screens

open access: yesSensors, 2021
A first-order optical system with arbitrary multiple masks placed at arbitrary positions is the basic scheme of various optical systems. Generally, masks in optical systems have a non-shift invariant (SI) effect; thus, the individual effect of each mask ...
Malchiel Haskel, Adrian Stern
doaj   +1 more source

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

open access: yesFEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz   +11 more
wiley   +1 more source

Fabrication of a π-phase-shifted fiber Bragg grating at twice the Bragg wavelength with the standard phase mask technique

open access: yes, 2009
A pair of reflection peaks/transmission dips, at twice the Bragg wavelength, were observed in spectra of a Type I fiber Bragg grating written with the standard phase mask technique. The occurrence of two peaks/ dips, rather than one, is attributed to the
Scott Wade (18927013)   +6 more
core   +1 more source

Phase sensitivity in forward masking [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1981
Forward-masking functions were obtained using sinusoidal maskers of 300-ms duration followed by a 20-ms test signal at the same frequency. Changing the phase of the test signal relative to the phase of the masker leads to variations of the masking threshold of up to 6 dB.
Robert V. Shannon, Christoph Schreiner
openaire   +1 more source

COMP–PMEPA1 axis promotes epithelial‐to‐mesenchymal transition in breast cancer cells

open access: yesMolecular Oncology, EarlyView.
This study reveals that cartilage oligomeric matrix protein (COMP) promotes epithelial‐to‐mesenchymal transition (EMT) in breast cancer. We identify PMEPA1 (protein TMEPAI) as a novel COMP‐binding partner that mediates EMT via binding to the TSP domains of COMP, establishing the COMP–PMEPA1 axis as a key EMT driver in breast cancer.
Konstantinos S. Papadakos   +6 more
wiley   +1 more source

A π-phase-shifted fiber Bragg grating fabricated using a single phase mask

open access: yes, 2009
A fiber Bragg grating at twice the Bragg wavelength was fabricated by a standard phase mask technique and its two peaks/dips are attributed to the interleaved refractive index modulations along the fiber core that produced a pi-phase-shifted ...
Scott Wade (18927013)   +6 more
core   +1 more source

3D PSF for COSA phase mask

open access: yes, 2020
Three-dimensional point-spread function of the COSA phase ...
Guillem Carles (4558690)
core   +1 more source

Signum phase mask differential microscopy

open access: yes, 2023
We propose and experimentally demonstrate a differential microscopy method to obtain simultaneous amplitude, phase, and quantitative polarization gradient imaging in a single experimental embodiment.
Modak, Niladri   +3 more
core   +2 more sources

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