Results 31 to 40 of about 6,703 (220)

Multipass wide-field phase imager

open access: yesOptics Express, 2023
Advances in optical imaging always look for an increase in sensitivity and resolution among other practicability aspects. Within the same scope, in this work we report a versatile interference contrast imaging technique, with high phase sensitivity and a large field-of-view of several mm2.
Álvaro Cuevas   +7 more
openaire   +4 more sources

Resonant photoacoustic spectrometer enhanced by multipass absorption for detecting atmospheric CH4 at the ppb-level

open access: yesFrontiers in Chemistry, 2022
A resonant photoacoustic spectrometer (PAS) was developed for detecting trace atmospheric CH4. The sensitivity of the PAS was significantly increased via a Herriott-type multipass cell with a beam pattern concentrated in the cavity. The effective optical
Qiang Liu   +6 more
doaj   +1 more source

The Optimal Variation of Zone Lengths in Multipass Zone Refining Processes

open access: yes, 2016
The effect of variable zone length on the separation efficiency in zone refining processes was investigated theoretically. During zone refining operation, properly adjusting the zone length along the ingot influences the solute concentration in the ...
Ho, Chii-Dong; Yeh, Ho-Ming; Yeh, Tzuoo-Lun
core   +1 more source

Parameters Optimization of Multipass Milling Process by an Effective Modified Particle Swarm Optimization Algorithm

open access: yesDiscrete Dynamics in Nature and Society, 2022
The selection of the optimal metal milling parameters greatly impacts final product quality and production efficiency in modern manufacturing systems. The profit rate is also sensitive to the selected parameters.
Cuiyu Wang   +3 more
doaj   +1 more source

SAR Tomography Imaging for Buildings Using an Inconsistency Criterion for Amplitude and Phase

open access: yesLeida xuebao, 2020
An indispensable step in the imaging of Tomographic Synthetic Aperture Radar (TomoSAR) in spectral analysis or Compressive Sensing (CS) technology is estimating the perpendicular baselines in the Perpendicular Line Of Sight (PLOS) in deramping operations.
XIE Jinwei   +3 more
doaj   +1 more source

A New Approach to Simulate HSLA Steel Multipass Welding through Distributed Point Heat Sources Model

open access: yesMetals, 2018
Mechanical properties of welded joints depend on the way heat flows through the welding passes. In multipass welding the reheating of the heat affected zone (HAZ) can form local brittle zones that need to be delimited for evaluation.
Dario Magno Batista Ferreira   +4 more
doaj   +1 more source

A synthetic ion channel with anisotropic ligand response

open access: yesNature Communications, 2020
Transmembrane proteins are important for cellular functions and synthetic analogues are of interest. Here the authors report on the design and testing of a synthetic multipass transmembrane channel which shows anisotropic responses to agonistic and ...
Takahiro Muraoka   +13 more
doaj   +1 more source

Detection of Protein–Protein Interactions in Escherichia coli With Single Molecule Sensitivity

open access: yesAdvanced Science, EarlyView.
This article describes a regulatory circuit in Escherichia coli able to detect protein–protein interactions with exquisite sensitivity. The interaction between two hybrid proteins fused to Bordetella pertussis adenylate cyclase and its activator calmodulin triggers a potent cyclic AMP signaling cascade.
Marilyne Davi, Daniel Ladant
wiley   +1 more source

TAST and Multipass systems for multilayer robotic welding [PDF]

open access: yes, 2021
Bakalářská práce v první části mapuje současný výrobní program společnosti FANUC v oblasti svařovacích robotů. V krátkosti jsou shrnuty obecné poznatky o senzorech používaných v robotizovaném svařování.
Jiří Resl
core  

Low-pressure multipass Raman spectrometer

open access: yesApplied Optics, 2021
Nonintrusive, quantitative measurements of thermodynamic properties of flows associated with propulsion systems are pivotal to advance their design and optimization. Laser-based diagnostics are ideal to provide quantitative results without influencing the flow; however, the environments in which such flows exist are often not ...
Alfredo D. Tuesta   +4 more
openaire   +2 more sources

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