Results 41 to 50 of about 2,202 (209)

GASP-Galway astronomical Stokes polarimeter

open access: yesEPJ Web of Conferences, 2010
The Galway Astronomical Stokes Polarimeter (GASP) is an ultra-high-speed, full Stokes, astronomical imaging polarimeter based upon a Division of Amplitude Polarimeter.
Shearer A.   +4 more
doaj   +1 more source

Metal‐Ion Regulated Light‐Free Z→E Isomerization of Azobenzene Glycomacrocycle

open access: yesChemistry – A European Journal, EarlyView.
Metal ion‐catalyzed Z→E isomerization of photoswitchable azobenzene glycomacrocycle: A new azobenzene‐based glycomacrocycle is capable of forming a 1:1 complex with divalent metal ions in both E‐ and Z‐isomers. The complexes undergo light‐free Z→E isomerization in a timescale spanning from seconds to weeks.
Yang Zhou   +4 more
wiley   +1 more source

Impact of three-dimensional polarization profiles on spin-dependent measurements in colliding beam experiments

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2012
We derive the effect of 3-dimensional polarization profiles on the measured polarization in polarimeters, as well as the observed polarization and the polarization-weighted luminosity (figure of merit) in single and double spin measurements in colliding ...
Wolfram Fischer, Alexander Bazilevsky
doaj   +1 more source

Improved Absolute Polarization Calibrator for BICEP CMB Polarimeters [PDF]

open access: yesEPJ Web of Conferences
Cosmic birefringence is a hypothesized parity violation in electromagnetism that predicts a frequency-independent polarization rotation as light propagates.
Polish A. R.   +91 more
doaj   +1 more source

An Investigation Into the Yields of 3,4‐Methylenedioxyphenyl‐2‐propanone (MDP2P) From Glycidate Pre‐Precursors

open access: yesDrug Testing and Analysis, EarlyView.
Hydrolysis of the glycidate pre‐precursors MMDMG and EMDMG was evaluated for MDP2P production. Acid hydrolysis of MMDMG (HCl, 100°C, 18 h) yielded the highest MDP2P recovery (79%), whereas base hydrolysis produced only slightly lower yields (73%), demonstrating both pathways are effective routes to this key MDMA precursor.
Alexandra L. Mercieca   +4 more
wiley   +1 more source

Soil Silicon Application Alleviates Drought Stress in Sugar Beet (Beta vulgaris L.)

open access: yesJournal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Background: The increasing frequency and intensity of drought events have led to yield and quality losses in sugar beet production in temperate regions in Central Europe. Under arid conditions, silicon (Si) application reduced beet yield losses under drought. Similar data for temperate climates are missing.
Tabea Selzer   +5 more
wiley   +1 more source

Image interpolation for division of focal plane polarimeters with intensity correlation

open access: yes, 2016
Division of focal plane (DoFP) polarimeters operate by integrating micro-polarizer elements with a focal plane. These polarization imaging sensors reduce spatial resolution output and each pixel has a varying instantaneous field of view (IFoV).
Zhang JC(张俊超)   +3 more
core   +1 more source

Synthesis of Chiral Gold Nanostructures on Gold‐Coral‐Coated Transparent Conductive Oxide Substrates via [AuCl4]– and Cysteine Interactions for Enhanced Chiral Sensing

open access: yesSmall, EarlyView.
We developed hierarchical chiral Au nanostructures on Au coral structures on transparent conductive oxide substrates using only electrochemical methods. By controlling the interaction between [AuCl4]– and cysteine, we successfully tuned the morphology and circular dichroism of the resulting Au nanostructures.
Kenta Nakagawa   +7 more
wiley   +1 more source

UV Polarimeters for Pollux onboard LUVOIR

open access: yes, 2018
International audiencePollux, the European high-resolution spectropolarimeter designed for LUVOIR, will work from 90 to 400 nm. In order to optimize its efficiency, the range is divided in 3 channels: far ultra-violet (FUV) from 90 to 124.5 nm, mid-UV ...
Neiner, Coralie   +3 more
core   +6 more sources

Imaging polarimetry in the LWIR with microgrid polarimeters

open access: yesEPJ Web of Conferences, 2010
Microgrid polarimeters have emerged over the past decade as a viable tool for performing real-time, highly accurate polarimetric imagery. A microgrid polarimeter operates by integrating a focal plane array (FPA) with an array of micropolarizing optics.
Tyo J.S.
doaj   +1 more source

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