Results 61 to 70 of about 233,212 (303)

Fast MTF measurement of CMOS imagers using ISO 12233 slanted-edge methodology [PDF]

, 2004
The ISO 12233 standard provides a fast and efficient way of measuring Modulation Transfer Function (MTF) of digital input devices (such a digital still camera) using a normalized reflective target based on a slanted-edge method. A similar methodology has
Estribeau, Magali, Magnan, Pierre
core  

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

FEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai, Mizuki Seo, Gyath Karadsheh, Fachrur Rizal Mahendra, Máté Á Demény, Ferenc Győry, János András Mótyán, László Fésüs, Endre Kristóf, Rini Arianti   +9 more
wiley   +1 more source

Comparing image quality of synchrotron and laboratory nano-CT scans: a round robin study

Journal of Synchrotron Radiation
This study presents a comprehensive comparison of image quality between synchrotron-based and laboratory-based nano-computed tomography (nano-CT) systems, using a standardized 3D test phantom composed of monodisperse silica spheres.
Simon Wittl, Simon Zabler, Jonas Fell, Julie Villanova, Pierre Lhuissier, Stefanie Hildebrandt, Hans-Georg Herrmann   +6 more
doaj   +1 more source

Insight into the underlying competitive mechanism for the shift of the charge neutrality point in a trilayer-graphene field-effect transistor

eScience, 2022
Layer-number modulation in graphene has become a recent focus of research due to the superior degree of freedom that can be achieved in terms of magic-angle, wettability, superconductivity, and superlattices.
Tao Huang, Jiafen Ding, Zirui Liu, Rui Zhang, BoLei Zhang, Kai Xiong, Longzhou Zhang, Chong Wang, Shili Shen, Cuiyu Li, Peng Yang, Feng Qiu   +11 more
doaj   +1 more source

Study on power envelope subtracion based on modulation transfer function [PDF]

, 2012
Supervisor:Masashi ...
LIU, Yang
core  

Non-uniform sampling knife-edge method for camera modulation transfer function measurement

, 2016
Traditional slanted knife-edge method experiences large errors in the camera modulation transfer function (MTF) due to tilt angle error in the knife-edge resulting in non-uniform sampling of the edge spread function. In order to resolve this problem, a
Xue, Xun, Gao, Limin, Xun Xue, Chen, Yongquan, Liude Tian, Tian, Liude, Yaxuan Duan, Limin Gao, Zhao, Jianke, Yongquan Chen, Jianke Zhao, Duan, Yaxuan   +11 more
core   +1 more source

Determination of the modulation transfer function in betatron tomography [PDF]

, 2017
Spatial resolution of high-energy computed tomography is experimentally studied on the basis of X-ray inspection of a steel cylinder to assess the operability of the system [1, 2].
Osipov, Sergey Pavlovich, Kayralapov, D., Chakhlov, Sergey Vladimirovich, Mamyrbaev, Talgat Askarbekovich, T Mamyrbayev, S P Osipov, S V Chakhlov, D Kayralapov   +7 more
core   +1 more source

End-to-End Modulation Transfer Function (MTF) Simulator for High-Resolution Spaceborne Electro-Optic Imagers

, 2023
We present an end-to-end modulation transfer function (MTF) simulator for high-resolution spaceborne imagers. The simulator comprises the modules of atmosphere, optics, detector, and satellite. The mathematical background of the modules is developed in a
Deniz, Ceren, Ceylan, Ertugrul, Ekinci, Mehmet Burak, Ozturk, Zeynep Nilufer, Ekinci, Mustafa, Karci, Ozgur   +5 more
core   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS 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, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

Intercomparison of quality control software responses in measuring the modulation transfer function in mammography

Brazilian Journal of Radiation Sciences
The National Cancer Institute (INCA) estimated approximately 74,000 new cases of breast cancer in Brazil in 2023, making it the second most common cancer among women.
Laila Fernanda Moreira de Almeida, Maria do Socorro Nogueira, Peterson Lima Squair   +2 more
doaj   +1 more source