Results 61 to 70 of about 1,743 (212)

Machine Learning-Based Estimation of PM2.5 Concentration Using Ground Surface DoFP Polarimeters

open access: yesIEEE Access, 2022
In this paper, we propose a machine learning system for the estimation of atmospheric particulate matter (PM) concentration, specifically, particles with a maximum diameter of $2.5{\mu }\text{m}$ .
Maen Takruri   +5 more
doaj   +1 more source

A Comparative Study of the Influence of Water and Temperature on the Racemization of Five‐ and Six‐Membered l‐Alanine‐Derived Imides

open access: yesChirality, Volume 38, Issue 8, August 2026.
Racemization of chiral imides in dimethylformamide is shown to increase with increasing water content and temperature. The six‐membered imide ring system is more stable than the five‐membered analogue, with slower racemization under identical conditions and an absence of competing side reactions.
Diksha U. Sawant   +4 more
wiley   +1 more source

Searching for Axion-Like Particles with X-ray Polarimeters

open access: yesGalaxies, 2018
X-ray telescopes are an exceptional tool for searching for new fundamental physics. In particular, X-ray observations have already placed world-leading bounds on the interaction between photons and axion-like particles (ALPs).
Francesca Day, Sven Krippendorf
doaj   +1 more source

Design, Synthesis, and Biological Evaluation of Chiral Urea and Thiourea Derivatives as Multitarget‐Directed Anti‐Alzheimer Agents

open access: yesDrug Development Research, Volume 87, Issue 5, August 2026.
ABSTRACT A series of novel chiral urea and thiourea compounds were designed as multitarget‐directed ligands for Alzheimer's disease and evaluated against hAChE, hBChE, and hMAO‐B, with exploratory assessment of HSD10. These chiral compounds were synthesized and fully characterized, and their enantiopurity was confirmed via HPLC.
Sule Erol Gunal   +10 more
wiley   +1 more source

Proton polarimeters for spin transfer experiments [PDF]

open access: yes, 1985
The design and use of proton polarimeters for spin transfer (Wolfenstein parameter) measurements is discussed. Polarimeters are compared with polarized targets for spin dependent experiments.
McNaughton, M.W.
core  

Amino acid vectorization of salicylic acid enables efficient activation of NPR1‐dependent defense without phytotoxicity

open access: yesPest Management Science, Volume 82, Issue 8, Page 7321-7336, August 2026.
Amino acid‐vectorized salicylic acid activates PR1/NPR1‐dependent defenses without phytotoxicity, showing an efficient strategy for controlled delivery and enhanced plant immunity. Abstract BACKGROUND Addressing global food security under rapid population growth and climate change requires sustainable strategies to protect crops from pathogens while ...
Ruth Oussou   +6 more
wiley   +1 more source

Polarimetry of light scattered by surface roughness and textured films and periodic structures in nanotechnologies: a new challenge in instrumentation and modeling

open access: yesEPJ Web of Conferences, 2010
Exhaustive studies in the literature detail the Mueller matrices properties through decomposition, optical entropy and depolarization formalism. It has been applied for many years in rather different fields. In radar polarimetry, mathematical basis of
Ferrieu. F.
doaj   +1 more source

Over seven decades of solar microwave data obtained with Toyokawa and Nobeyama Radio Polarimeters

open access: yesGeoscience Data Journal, 2023
Monitoring observations of solar microwave fluxes and their polarization began in Japan during the 1950s at Toyokawa and Mitaka. At present (April 2022), monitoring observations continues with the Nobeyama Radio Polarimeters (NoRP) at the Nobeyama campus
Masumi Shimojo, Kazumasa Iwai
doaj   +1 more source

Total Syntheses of Agelamadin F and (±)‐Tauroacidin A, Enabled by NaClO2‐Mediated Coupling Reactions of Oroidin and Amines

open access: yesChemistry – A European Journal, Volume 32, Issue 27, 17 July 2026.
Total syntheses of agelamadin F and (±)‐tauroacidin A were achieved by sodium chlorite (NaClO2)‐mediated oxidative C─N coupling. Nine C15–N–amino acid‐substituted oroidin derivatives were successfully prepared to demonstrate the applicability and versatility of this oxidative coupling reaction.
Ryosuke Hirozumi   +3 more
wiley   +1 more source

Extended eigenvalue calibration method for overdetermined Mueller matrix polarimeters [PDF]

open access: yes
International audienceThe eigenvalue calibration method is a versatile approach that can be applied to any type of the Mueller matrix polarimetic setup because a precise knowledge of the optical response of the setup components is not required.
Ossikovski, Razvigor   +2 more
core   +1 more source

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