Results 51 to 60 of about 1,079,327 (290)

Spontaneous Formation of Strained Anti-Bredt Bridgehead Alkenes upon Computational GeometryOptimization of Bicyclic β-Halo Carbanions

Organics
Bridgehead alkenes are polycyclic molecules bearing at least one C=C bond that includes a bridgehead carbon atom. For small bicyclic systems, these bonds are highly strained due to geometric constraints placed on the sp2 hybridized carbon atoms.
Gary W. Breton, Jazmine V. Ridlehoover
doaj   +1 more source

Mapping the Berry Curvature from Semiclassical Dynamics in Optical Lattices

, 2012
We propose a general method by which experiments on ultracold gases can be used to determine the topological properties of the energy bands of optical lattices, as represented by the map of the Berry curvature across the Brillouin zone.
H. M. Price, N. R. Cooper, N. W. Ashcroft   +2 more
core   +1 more source

Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)

Advanced Functional Materials, EarlyView.
Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao, Christian Weinberger, Jakob Steube, Matthias Bauer, Martin Brehm, Michael Tiemann   +5 more
wiley   +1 more source

Frustrated Alternative Approaches towards the Synthesis of a Thermally Stable 1,2-Diazacyclobutene

Molecules
We have previously demonstrated that an appropriately substituted four-membered-ring 1,2-diazacyclobutene is a useful compound in organic synthesis for the introduction of strained 1,2-diazetidine rings. In order to further explore the reactivity of this
Gary W. Breton, Kenneth L. Martin
doaj   +1 more source

Magnetic Control of Chiral Hybridized Phonon Magnetic Moments in Ferrimagnets Fe2‐xZnxMo3O8

Advanced Functional Materials, EarlyView.
Helicity‐resolved magneto‐Raman spectroscopy reveals magnetic control of chiral phonon magnetic moments in polar ferrimagnet (ZnxFe2−xMo3O₈). Large spontaneous zero‐field phonon splittings, selective phonon–magnon coupling, and asymmetric Zeeman responses demonstrate that phonon chirality is governed by magnon‐phonon coupling and magnetization.
Youngsu Choi, Dirk Wulferding, Amit Pawbake, Clément Faugeras, Sivasakthi Kuppusamy, Raman Sankar, Gichan Son, Jeongwoo Kim, Kwang‐Yong Choi   +8 more
wiley   +1 more source

Development and Validation of a Multilingual Lexicon as a Key Tool for the Sensory Analyses and Consumer Tests of Blueberry and Raspberry Fruit

Agriculture, 2023
A comprehensive lexicon is a necessary communication tool between the panel leader and panelists to describe each sensory stimulus potentially evoked by a product. In the current scientific breeding and trading scenario, a multilingual sensory lexicon is
Nico Lippi, Elisa Senger, Saila Karhu, Bruno Mezzetti, Marta Cianciabella, Beatrice Denoyes, Duygu Ayvaz Sönmez, Marina Fidelis, Edoardo Gatti, Monika Höfer, Nesibe Ebru Kafkas, Luca Mazzoni, Susan McCallum, Klaus Olbricht, Saverio Orsucci, Sonia Osorio, Dora Pinczinger, Stefano Predieri, Susanna Rokka, José Federico Sánchez-Sevilla, Gianluca Savini, Carmen Soria, Björn Usadel, Paolo Zucchi, Medoro Chiara   +24 more
doaj   +1 more source

Cancer prevention with freeze-dried berries and berry components [PDF]

Seminars in Cancer Biology, 2007
Our laboratory is developing a food-based approach to the prevention of esophageal and colon cancer utilizing freeze-dried berries and berry extracts. Dietary freeze-dried berries were shown to inhibit chemically induced cancer of the rodent esophagus by 30-60% and of the colon by up to 80%.
Gary D, Stoner, Li-Shu, Wang, Nancy, Zikri, Tong, Chen, Stephen S, Hecht, Chuanshu, Huang, Christine, Sardo, John F, Lechner   +7 more
openaire   +2 more sources

Nontrivial quantized Berry phases for itinerant spin liquids

, 2007
Quantized Berry phases as local order parameters in t-J models are studied. A texture pattern of the local order parameters is topologically stable due to the quantization of non-Abelian Berry phases defined by low-energy states below a spin gap, which ...
Affleck I., Aligia A. A., Anderson P., Anderson P. W., Dagotto E., Haldane F. D. M., Hatsugai Y., Hatsugai Y., Hatsugai Y., Hatsugai Y., Hatsugai Y., Hirano T., Imada M., Katsura H., King-Smith R. D., Ogata M., Ogata M., Read N., Rokhsar D. S., Troyer M., Vidal G., Wen X. G., Wen X. G., Wilczek F., Zhang F. C.   +24 more
core   +1 more source

Ferroelectricity in Antiferromagnetic Wurtzite Nitrides

Advanced Functional Materials, EarlyView.
We establish MnSiN2${\rm MnSiN}_2$ and MnGeN2${\rm MnGeN}_2$ as aristotypes of a new multiferroic wurtzite family that simultaneously exhibits ferroelectricity and antiferromagnetism with altermagnetic spin splitting. By strategically substituting alkaline‐earth metals, we predict new materials with coexisting switchable polarization, spin texture, and
Steven M. Baksa, Lin‐Ding Yuan, Stephen D. Wilson, James M. Rondinelli   +3 more
wiley   +1 more source

Exploring Genotype-by-Environment Interactions of Chemical Composition of Raspberry by Using a Metabolomics Approach

Metabolites, 2021
Promoting the consumption of fruits is a key objective of nutrition policy campaigns due to their associated health benefits. Raspberries are well appreciated for their remarkable flavor and nutritional value attributable to their antioxidant properties.
Sara Durán-Soria, Delphine M. Pott, Frank Will, Jennifer Mesa-Marín, Mariusz Lewandowski, Karolina Celejewska, Agnieszka Masny, Edward Żurawicz, Nikki Jennings, Anita Sønsteby, Erika Krüger, Sonia Osorio   +11 more
doaj   +1 more source