Results 81 to 90 of about 233,212 (303)

A Simple Approach of Presampled Modulation Transfer Function Measurement Tested on the Phoenix Nanotom Scanner

open access: yes, 2016
In this paper presampled modulation transfer function of the 2D images obtained on the Phoenix Nanotom scanner was investigated with different measurement set-ups.
Ivashkov, D.   +2 more
core   +1 more source

Biophysical approaches for studying viral entry

open access: yesFEBS Letters, EarlyView.
Viruses infect all living organisms and have been responsible for major epidemics and pandemics. Their ongoing evolutionary battle with host defenses creates a constant need for improved tools to study viral behavior. Advancing methods to probe viral attachment, fusion, and genome release deepen our understanding of how infections begin and support the
Inbar Yosibash, Raya Sorkin
wiley   +1 more source

Enhancing Accuracy and Precision in Omni-Angle Edge-Based Modulation Transfer Function Measurements

open access: yesIEEE Access
The modulation transfer function (MTF) quantitatively describes the ability of an optical or imaging system to reproduce contrast at various spatial frequencies. The ISO 12233 edge-based method adopted diagonal MTF measurement for sampled imaging systems
Kenichiro Masaoka
doaj   +1 more source

Modulation transfer function of gamma ray collimators

open access: yes, 1971
Recently there has been a great increase in the uses of radioisotopes in medicine for the detection of lesions in the internal organs of the body. Many suggestions have been made concerning different methods of characterisation of the imaging systems ...
Devnani, Holo
core   +1 more source

The human gut microbiome across the life course

open access: yesFEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero   +4 more
wiley   +1 more source

Empirical Quantification of Topobathymetric Lidar System Resolution Using Modulation Transfer Function

open access: yesEarth and Space Science
Topobathymetric scanning lidar deployed on unmanned aircraft systems is a powerful tool for high‐resolution mapping of the dynamic interface between topography and bathymetry.
K. W. Sacca, J. P. Thayer
doaj   +1 more source

The Early Aging Temporal Processing: Evidence from Temporal Modulation Transfer Function with Background Noise

open access: yesAuditory and Vestibular Research
Background and Aim: Temporal processing deficits are reported to contribute to speech perception difficulties in noise. However, traditional temporal resolution tasks, which are often conducted in quiet conditions, may not always reflect a noticeable ...
Aditaya Narayana Singh   +2 more
doaj   +1 more source

Two dimensional modulation transfer function and its application in wavefront aberration detection

open access: yes, 2014
Image quality evaluation is an important work to optical system design and manufacture. Generally, modulation transfer function and wavefront aberration are two common evaluation ways.
Hao, Qun, Kang, Ji Qiang, Cheng, Xue Min
core   +1 more source

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

open access: yesFEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto   +3 more
wiley   +1 more source

Modulation of Homer1 EVH1 domain internal dynamics by putative autism‐associated mutations

open access: yesFEBS Letters, EarlyView.
The putative autism‐associated M65I and S97L variants of the EVH1 domain of the postsynaptic scaffold protein Homer1 do not exhibit substantial changes in their overall structure or partner binding. Both of them, but especially the M65I variant, show altered internal dynamics relative to the wild‐type domain on the μs‐ms timescale, indicated by the ...
Fanni Farkas   +6 more
wiley   +1 more source

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