Results 21 to 30 of about 1,069,804 (254)
Fiber-optic chemical sensing with Langmuir-Blodgett overlay waveguides [PDF]
, 1999 Fiber-optic chemical sensing has been demonstrated with a side-polished single- mode optical fiber, evanescently coupled to chemically sensitive Langmuir- Blodgett (LB) overlay waveguides.
Tatam, Ralph P. +3 more
core +1 more source
Actuators, 2019 Medical professionals increasingly rely on endoscopes to carry out many minimally invasive procedures on patients to safely examine, diagnose, and treat a large variety of conditions.
Aydin Aghajanzadeh Ahrabi +4 more
doaj +1 more source
A fiber-optic system for recording skin conductance in the MRI scanner [PDF]
Behavior Research Methods, 2005 The acquisition of the skin conductance response (SCR) during functional magnetic resonance imaging (fMRI) raises significant safety issues, as well as practical ones, which need to be addressed in order for these experiments to be conducted safely and successfully.
Lagopoulos, Jim, Malhi, G S, Shnier, R C
openaire +3 more sources
Long segment 3D double inversion recovery (DIR) hypersignal on MRI in glaucomatous optic neuropathy
BMC Ophthalmology, 2019 Background In this retrospective study the relationship between intraocular pressure (IOP), retinal nerve fiber layer (RNFL) thickness and pathologic hypersignal in optic nerve segments on 3D double inversion recovery (DIR) MR sequence in 21 patients ...
Thomas Sartoretti +7 more
doaj +1 more source
Actuators, 2017 This paper aims to evaluate the temperature increase caused by a 3.0-T magnetic resonance imaging (MRI) system on an ultrasonic motor (USM) used to actuate surgical robots in the MRI environment.
Peyman Shokrollahi +2 more
doaj +1 more source
Heritage Science, 2018 Prior studies have shown the improved ability to identify artists’ pigments by combining results from X-ray fluorescence (XRF), which provides elemental information, with reflectance spectroscopy in the visible to near infrared (400–1000 nm) that ...
John K. Delaney +5 more
doaj +1 more source
Омский научный вестникThe article aims at considering the possibilities and finding new ways to constructively improve contact measuring heads for high-precision 3D control of geometric parameters of complex products on coordinate measuring machines. Technical solutions based
E. V. Leun
doaj +1 more source
Dynamic perfusion and diffusion MRI of cortical spreading depolarization in photothrombotic ischemia
Neurobiology of Disease, 2014 Cortical spreading depolarization (CSD) is known to exacerbate ischemic damage, as the number of CSDs correlates with the final infarct volumes and suppressing CSDs improves functional outcomes.
Yu-Chieh Jill Kao +5 more
doaj +1 more source
A Precessing-Coin-like Rotary Actuator for Distal Endoscope Scanners: Proof-of-Concept Study
MicromachinesThis paper presents, for the first time, a rotary actuator functionalized by an inclined disc rotor that serves as a distal optical scanner for endoscopic probes, enabling side-viewing endoscopy in luminal organs using different imaging/analytic ...
Nirvana Gharib +2 more
doaj +1 more source
Using fluorescence fluctuation spectroscopy to quantify molecular dynamics within cells
FEBS Open Bio, EarlyView.Microscopy techniques like fluorescence correlation spectroscopy (FCS) and number and brightness analysis (N&B) allow to quantify concentrations, diffusion rates, and oligomerization of fluorescently labeled molecules in the living cell. In this protocol the principles of how to set up these types of experiments are described including calibration ...
Mark A. Hink
wiley +1 more source