Results 91 to 100 of about 666,055 (319)

Raman‐based label‐free microscopic analysis of the pancreas in living zebrafish larvae

open access: yesFEBS Open Bio, EarlyView.
Forward stimulated Raman scattering (F‐SRS) and epi coherent anti‐Stokes Raman scattering (E‐CARS) allow label‐free discrimination of distinct subcellular structures in the pancreas of living zebrafish larvae. Given the straightforward applicability, we anticipate broad implementation of Raman microscopy in other organs and across various biomedical ...
Noura Faraj   +3 more
wiley   +1 more source

Implementation of FORMIDABLE: A generalized differential optical design library with NURBS capabilities

open access: yesJournal of the European Optical Society-Rapid Publications
In this article we describe the implementation of Freeform Optics Raytracer with Manufacturable Imaging Design cApaBiLitiEs (FORMIDABLE): an optical design library capable of simulating optical systems by ray-tracing.
Volatier Jean-Baptiste   +4 more
doaj   +1 more source

Design of a Society of Automotive Engineers Regular Curved Retroreflector for Enhancing Optical Efficiency and Working Area

open access: yesCrystals, 2018
A highly efficient regular curved retroreflector is proposed to meet the requirements of the US Society of Automotive Engineers (SAE) regulations. It is demonstrated that 28% higher retroreflection efficiency and 33% more working area can be accomplished
Lanh-Thanh Le   +4 more
doaj   +1 more source

Mycobacterial cell division arrest and smooth‐to‐rough envelope transition using CRISPRi‐mediated genetic repression systems

open access: yesFEBS Open Bio, EarlyView.
CRISPRI‐mediated gene silencing and phenotypic exploration in nontuberculous mycobacteria. In this Research Protocol, we describe approaches to control, monitor, and quantitatively assess CRISPRI‐mediated gene silencing in M. smegmatis and M. abscessus model organisms.
Vanessa Point   +7 more
wiley   +1 more source

Evaluation of the Scintillation Loss for Optical Communication Systems with Direct Detection

open access: yes, 2006
In optical communications through the atmosphere, the evaluation of a link feasibility often requires the quantification of the scintillation penalty in terms of power loss. To find how much additional optical power is needed to reach the bit-error-rate (
Perlot, Nicolas
core  

Evaluation of FEC for the atmospheric optical IM/DD channel

open access: yes, 2003
Channel measurements were performed by the German Aerospace Center in various near ground optical channels including a 1.5 km horizontal path as well as a 61km path.
Hennes Henniger   +7 more
core   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

A Single-Element Plane Grating Monochromator

open access: yesPhotonics, 2016
Concerted rotations of a self-focused varied line-space diffraction grating about its groove axis and surface normal define a new geometric class of monochromator.
Michael C. Hettrick
doaj   +1 more source

Optical design and performance of the stereoscopic imaging channel for the ESA bepicolombo mission

open access: yes, 2017
The optical design of the Stereoscopic Imaging Channel for the Bepicolombo ESA mission will be presented. The design solutions will be described and the expected results will be compared to the ones measured on the flight model during the on-ground ...
Riccardo Paolinetti   +17 more
core   +1 more source

Surface imaging of metallic material fractures using optical coherence tomography [PDF]

open access: yes, 2014
We demonstrate the capability of optical coherence tomography (OCT) to perform topography of metallic surfaces after being subjected to ductile or brittle fracturing.
Demian, D.   +4 more
core   +1 more source

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