Results 21 to 30 of about 153 (136)

Drop‐on‐Demand Printed Negative Dielectric Anisotropy Liquid Crystal Droplets for Adaptive Complex Beam Manipulation and Assessment

open access: yesAdvanced Functional Materials, Volume 36, Issue 89, 5 November 2026.
Printed negative‐dielectric‐anisotropy liquid‐crystal droplets enable multidimensional full‐vectorial optical‐field sensing across polarization, phase, and wavelength, while also generating tunable skyrmionic‐like complex optical fields. ABSTRACT Adaptive manipulation of vectorial optical fields is important for optical metrology, imaging, and ...
Jinge Guo   +14 more
wiley   +1 more source

Previously Undescribed Esters and an Alkaloid From Trollius chinensis With Anti‐Inflammatory and Cytotoxic Activities

open access: yesChemistry &Biodiversity, Volume 23, Issue 11, November 2026.
Ten new compounds (9 esters, 1 alkaloid) were isolated from the flowers of Trollius chinensis Bunge, and all isolated compounds were evaluated in vitro for cytotoxicity against HeLa, HepG2, HCT 116 cells, and NO inhibition in RAW 264.7 macrophages, enriching structural diversity and providing a chemical basis for further study. . ABSTRACT In this study,
Mei‐Li Guo   +6 more
wiley   +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, Volume 18, Issue 11, Page 1470-1479, November 2026.
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

A Multipurpose Scanning Spectral Polarimeter (SSP): Instrument Description and Sample Results

open access: yesJournal of Atmospheric and Oceanic Technology, 2000
Abstract This paper describes the design and characteristics of a scanning spectral polarimeter designed to measure spectral radiances and fluxes in the range between 0.4 and 4.0 μm. The instrument characteristics are described, and the procedures to calibrate the unpolarized radiances and fluxes in the spectral range from 0.4 to 1.1 μm are discussed ...
Graeme L. Stephens   +6 more
openaire   +1 more source

Aerosol Retrieval Over Ocean From DPC‐2/GF‐5(02): Using RemoTAP Extended With a 3‐Parameter Ocean Bio‐Optical Model and Comparisons With a 1‐Parameter Model

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 20, 28 October 2026.
Abstract Multi‐angle polarimetric instruments (MAPs) enable the retrieval of essential aerosol properties over oceanic regions. MAPs retrieval algorithms commonly use a 1‐parameter ocean bio‐optical model (OBM), based on chlorophyll‐a concentration only to represent optical properties over open waters (case‐1), whereas the coastal water (mixture of ...
Cheng Fan   +10 more
wiley   +1 more source

The Sunrise Chromospheric Infrared Spectro-Polarimeter SCIP: An Instrument for SUNRISE III

open access: yesSolar Physics
Abstract The Sunrise balloon-borne solar observatory is equipped with a one-meter aperture optical telescope, offering a unique platform for uninterrupted seeing-free observations across ultraviolet, visible, and infrared wavelengths from altitudes higher than 33 km. For the
Y. Katsukawa   +56 more
openaire   +3 more sources

Liquid crystals for space instrumentation: optical properties of liquid crystal mixtures for polarimeters

open access: yesOptical Materials Express, 2019
Liquid crystal (LC) based polarization modulators will be used for the first time in space instrumentation in the ESA/NASA Solar Orbiter mission. LC birefringence dependence on temperature and wavelength is key for the design of these instruments. A complete characterization of the optical properties of five different LC mixtures (ZLI-3700-000, BL006 ...
Pilar García Parejo   +1 more
openaire   +1 more source

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

open access: yesChemistry – A European Journal, Volume 32, Issue 38, 13 October 2026.
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

Structure–Activity Relationships of 1,4‐Benzodiazepines Inhibiting the Voltage‐Gated Potassium Channel KV7.1

open access: yesArchiv der Pharmazie, Volume 359, Issue 10, October 2026.
KV7.1 antagonists hold potential for the treatment of diarrhea, reflux esophagitis, and hypoinsulinemia. To derive structure–activity relationships, the lead KV7.1 antagonist L768,673 was thoroughly modified in 1‐ and 3‐positions. The 3‐fluoropropyl‐substituted 1,4‐benzodiazepine showed promising KV7.1 inhibitory activity, qualifying it as a potential ...
Florian Roßner   +3 more
wiley   +1 more source

Colombiains A–C, Three New Alkaloids From the Soft Coral‐Derived Fungus Cladosporium colombiae CSGL 10M10

open access: yesChemistry &Biodiversity, Volume 23, Issue 10, October 2026.
Three new alkaloids, colombiains A–C (1–3), together with eight known ones (4–11) were isolated from the soft coral‐derived fungus Cladosporium colombiae CSGL 10M10. Compounds 6 and 11 exhibited significant cardioprotective activity against OGD/R‐induced injury in H9c2 cardiomyocytes at 10 µM.
Jing Xie   +8 more
wiley   +1 more source

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