Results 71 to 80 of about 18,179 (207)

Optimizing the Straight Leg Raise Maneuver to Improve Prediction of Conclusive Gastro‐Esophageal Reflux Disease

Neurogastroenterology &Motility, EarlyView.
The SLR maneuver is a valuable component of GERD evaluation. By establishing optimal thresholds for both effective EGJ challenge and accurate GERD prediction, we provide another step for standardized implementation in clinical practice. ABSTRACT Background Gastroesophageal reflux disease (GERD) arises from dysfunction of the anti‐reflux barrier.
Stefano Siboni, Carlo Galdino Riva, Roberta De Maron, Marco Sozzi, Pierfrancesco Visaggi, Edoardo Savarino, Emanuele Asti, C. Prakash Gyawali   +7 more
wiley   +1 more source

Where Mathematical Symbols Come From

Topics in Cognitive Science, EarlyView.
Abstract There is a sense in which the symbols used in mathematical expressions and formulas are arbitrary. After all, arithmetic would be no different if we would replace the symbols ‘+$+$’ or ‘8’ by different symbols. Nevertheless, the shape of many mathematical symbols is in fact well motivated in practice.
Dirk Schlimm
wiley   +1 more source

Rigidity of quasiconformal maps on Carnot groups [PDF]

Mathematical Proceedings of the Cambridge Philosophical Society, 2016
AbstractWe show that quasiconformal maps on many Carnot groups must be biLipschitz. In particular, this is the case for 2-step Carnot groups with reducible first layer. These results have implications for the rigidity of quasiisometries between negatively curved solvable Lie groups.
openaire   +3 more sources

Ion Source Complementarity for Characterization of Complex Organic Mixtures Using Fourier Transform Mass Spectrometry: A Review

Mass Spectrometry Reviews, Volume 44, Issue 5, Page 808-829, September/October 2025.
ABSTRACT Complex organic mixtures are found in many areas of research, such as energy, environment, health, planetology, and cultural heritage, to name but a few. However, due to their complex chemical composition, which holds an extensive potential of information at the molecular level, their molecular characterization is challenging.
Charlotte Mase, Maxime Sueur, Hélène Lavanant, Christopher Paul Rüger, Pierre Giusti, Carlos Afonso   +5 more
wiley   +1 more source

Omics to Study and Manage Aquatic Environments: A Snapshot From the AquaEcOmics Meeting (Evian‐les‐Bains, 2025)

Molecular Ecology, Volume 34, Issue 17, September 2025.
ABSTRACT The AquaEcOmics meeting brought together 280 scientists applying omics tools to aquatic research in March 2025 (Evian‐les‐Bains, France). We synthesised here the main outcomes from the 167 presentations which were given. A similar number of presentations were about micro‐ and macroorganisms.
Frédéric Rimet, Clarisse Lemonnier, Benjamin Alric, Pedro Beja, Lucie Bittner, Jonas Bylemans, Florian Leese, Ramiro Logares, Kristian Meissner, Fabrice Not, Luisa Orsini, Benoit Paix, Naiara Rodríguez‐Ezpeleta, Raffaele Siano, Bettina Thalinger, Nicolas Tromas, Valentin Vasselon, Isabelle Domaizon   +17 more
wiley   +1 more source

Bent‐Core Liquid Crystal‐Based Heterojunctions as Gas Sensors

Advanced Sensor Research, Volume 4, Issue 8, August 2025.
Bilayer heterojunction devices are developed using liquid crystals and a molecular semiconductor. By employing banana‐shaped liquid crystals as a sublayer with lutetium bisphthalocyanine (LuPc2) on top, sensors sensitive to ammonia are achieved, detecting levels below 10 ppm, and as low as 2 ppm for specific devices.
Barbora Jansová, Sujithkumar Ganesh Moorthy, Michal Šmahel, Eric Lesniewska, Michal Kohout, Marcel Bouvet   +5 more
wiley   +1 more source

Critical Design Strategy of Thermogalvanic Hydrogels for Low‐Grade Heat Harvesting

Advanced Science, Volume 12, Issue 31, August 21, 2025.
This review highlights thermogalvanic hydrogels for efficient low‐grade heat harvesting, with a focus on design strategies. Key aspects include recent advances, thermoelectrochemical conversion mechanisms, performance metrics, enhancement approaches, and current device applications.
Wentao Lin, Shukai Wu, Shuo Niu, Zhe Hu, Guangming Chen, Zhuoxin Liu, Yang Huang, Chao Fang   +7 more
wiley   +1 more source

Tri‐reforming of Methane over a Hydroxyapatite‐Supported Nickel Catalyst Prepared by Cation Exchange

ChemPlusChem, Volume 90, Issue 8, August 2025.
A hydroxyapatite‐supported nickel catalyst containing 1 wt% nickel loading is successfully prepared by ion exchange, showing excellent catalytic performance in the trireforming of methane reaction at 800 °C and 1.4 bar. Catalytic steam reforming of methane is a major process to produce synthetic gas (syngas), deployed at a large industrial scale ...
Xuan‐Huynh Pham, Quoc‐Nghi Pham, Doan Pham Minh   +2 more
wiley   +1 more source

A remark on quasiconformal mappings on Carnot groups. [PDF]

Michigan Mathematical Journal, 1994
A. Koranyi and M. Reimann informed me that a result of theirs on the theory of quasiconformal mappings on the Heisenberg groups contradicted inequality (20.17) in my monograph [Strong rigidity of locally symmetric spaces, Ann. Math. Studies, No.
openaire   +3 more sources

Hausdorff measure of the singular set of quasiregular maps on Carnot groups [PDF]

, 2003
Irina Markina
openalex   +1 more source