Results 51 to 60 of about 6,076 (160)

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

Chemistry – 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, Jinbiao Jiao, Mathieu Lordez, Jean‐Yves Salpin, Juan Xie   +4 more
wiley   +1 more source

Chiral HPLC Separation of Phosphonothrixin and Phosphonate Derivatives and Electronic Circular Dichroism Characterization of the Isolated Enantiomers

ELECTROPHORESIS, EarlyView.
Natural compound phosphonothrixin's herbicidal activity resides exclusively in its (S)‐enantiomer, yet existing enantioselective syntheses are cumbersome, and direct chiral LC separation is hampered by the compound's high polarity, lack of aromatic groups, and metal chelation–induced peak tailing.
Mirna Maalouf, Maximilian Knab, Leon Gessner, Marc Engelhardt, Stella Friedrich, Harald Gross, Frank Boeckler, Chambers C. Hughes, Michael Lämmerhofer   +8 more
wiley   +1 more source

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

Journal 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, Gereon Heller, Dietmar Horn, Thomas Hetterich, Jan Kessler, Jakob Santner   +5 more
wiley   +1 more source

An automated polarimeter and its use in the study of active galaxies [PDF]

, 1996
In this thesis I present the design and development of an automated polarimeter for use in mapping the percentage levels and position angles of linearly polarized light from extended astronomical objects.
Stockdale, D.P., Stockdale, D.
core  

Optical Durability of Contemporary PV Encapsulants Through Artificial UV Weathering

Progress in Photovoltaics: Research and Applications, EarlyView.
Encapsulant choice can be used to mitigate UV‐induced degradation in modern silicon photovoltaic modules, but this strategy is only effective if encapsulants are durable under UV weathering. This study identifies optical changes to 14 commercial encapsulants as a function of UV weathering and identifies that, while changes to material transmittance ...
Dennice M. Roberts, Xavier Hanna, David C. Miller, Rachael L. Arnold, Jimmy M. Newkirk, Kent Terwilliger, Steve Johnston, Rebecca B. Wai, Peter Hacke, Dana B. Kern   +9 more
wiley   +1 more source

Hertz: an imaging polarimeter [PDF]

, 1998
The University of Chicago polarimeter, Hertz, is designed for observations at the Caltech Submillimeter Observatory in the 350 µm atmospheric window. Initial observations with this instrument, the first array polarimeter for submillimeter observations ...
David A. Schleuning, Roger H. Hildebrand, Novak, G., Hildebrand, R. H., Vaillancourt, J., Jessie L. Dotson, Dotson, J. L., Charles D. Dowell, Giles Novak, Dowell, C. D., Schleuning, D. A., J. Vaillancourt   +11 more
core   +1 more source

Summarizing multiple aspects of triple collocation analysis in a single diagram

Frontiers in Remote Sensing
With the ongoing expansion of global observation networks, it is expected that we shall routinely analyze records of geophysical variables such as temperature from multiple collocated instruments.
Leong Wai Siu, Xubin Zeng, Armin Sorooshian, Armin Sorooshian, Brian Cairns, Richard A. Ferrare, Johnathan W. Hair, Chris A. Hostetler, David Painemal, David Painemal, Joseph S. Schlosser, Joseph S. Schlosser   +11 more
doaj   +1 more source

Spin separation based on-chip optical polarimeter via inverse design

Nanophotonics, 2021
Polarimetry has been demonstrated essential in various disciplines, such as optical communications, imaging, and astronomy. On-chip nanostructures for polarization measurements are most expected to replace the conventional bulk elements, and hence ...
Zhou Changyu, Xie Youpeng, Ren Jianxin, Wei Zepeng, Du Luping, Zhang Qiang, Xie Zhenwei, Liu Bo, Lei Ting, Yuan Xiaocong   +9 more
doaj   +1 more source

Synergistic Mechanism Between Ir–Phosphinito Catalyst and HFIP Enables Asymmetric Hydrogenation of Ketones Under Acidic Conditions

Advanced Synthesis &Catalysis, Volume 368, Issue 15, 1 August 2026.
A cooperative mechanism between a phosphinito Ir complex and HFIP provides a low‐energy pathway for hydrogen activation. This allowed the development of a highly efficient catalytic system for the hydrogenation of ketones that operates under acidic conditions, enabling the reduction of substrates containing phenols and carboxylic acids with no added ...
Martí Sidro, Agustí Lledós, María Vicent‐Morales, Jordi Benet‐Buchholz, Giuseppe Sciortino, Antoni Riera, Xavier Verdaguer   +6 more
wiley   +1 more source

The KVI Lamb-shift polarimeter [PDF]

, 2004
We have designed, built and implemented a compact polarimeter for spin-polarized proton and deuteron beams based on the Lamb-shift principle. We briefly describe some design considerations and present first results obtained with this polarimeter.
Beijers, J.P.M., Beijers, JPM, Kalantar-Nayestanaki, N, Kremers, H.R., Kalantar-Nayestanaki, N., Kremers, HR, Clegg, TB   +6 more
core   +1 more source