Results 61 to 70 of about 6,076 (160)

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

The KVI Lamb-Shift polarimeter [PDF]

open access: yes, 2006
The design and operation of a Lamb-shift polarimeter is discussed. This polarimeter is used to measure the polarization of proton and deuteron beams extracted from the KVI polarized-ion source. The major components of the Lamb-shift polarimeter (LSP) are
Beijers, J.P.M.   +8 more
core   +1 more source

A novel free-electron laser single-pulse Wollaston polarimeter for magneto-dynamical studies

open access: yesStructural Dynamics, 2021
Here, we report on the conceptual design, the hardware realization, and the first experimental results of a novel and compact x-ray polarimeter capable of a single-pulse linear polarization angle detection in the extreme ultraviolet photon energy range ...
Antonio Caretta   +17 more
doaj   +1 more source

Projecting classical Mott polarimeter

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2021
In this paper we describe a new spin detector designed and manufactured at SPbPU. This device makes it possible to analyze the polarization of the secondary electron flux conserving the information about the electrons' spatial distribution.
Petrov Vladimir   +5 more
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

Calibration Methods of a Portable Polarizing System for Monitoring Optically Inhomogeneous Media

open access: yesComputation, 2022
Theoretical aspects of methods for calibrating Stokes polarimeters are considered. The prospects and opportunities for implementing the presented methods for calibrating portable polarization systems used in biology and medicine are determined.
Cong T. Nguyen   +7 more
doaj   +1 more source

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

Rigorous Design Optimization of a Fiber-Enabled Polarimetric Waveguide Interferometer for Biosensing

open access: yesIEEE Photonics Journal
Integrated photonic sensors have gained significant attention for biosensing applications. An especially potent design is the polarimetric waveguide interferometer, which utilizes polarization diversity for effective self-referencing.
Samuel M. Hormann   +3 more
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

A Chip-scale, Full-Stokes Polarimeter [PDF]

open access: yes, 2018
The polarization of light conveys unique information that can be exploited by crucial applications. The bulky and costly discrete optical components used in conventional polarimeters limit their broad adoption. A compact, low-cost polarimeter would bring
Leslie Rusch (4180759)   +3 more
core   +1 more source

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