Results 111 to 120 of about 60,379 (331)

The Mechanism of Visible‐Light Photochemical Rearrangements of Conjugated Amide Enolates

open access: yesChemistry – A European Journal, EarlyView.
Visible light irradiation of extended enolates of N‐benzylamides leads to homolytic C─N Bond cleavage, generating a biradical. Computational and mechanistic studies suggest rapid radical recombination within a solvent cage to give either ring‐expanded or rearranged products. ABSTRACT Deprotonation of conjugated amides forms colored solutions of lithium
James Mortimer   +3 more
wiley   +1 more source

Exploring the Boundaries of Aromaticity in Complex Structures and Excited States Through Computational Analysis

open access: yesChemistry – A European Journal, EarlyView.
Understanding aromaticity has evolved from benzene‐centric concepts to a broad multidimensional framework spanning organic, inorganic, and excited‐state systems. This review highlights ambiguities between magnetic, electronic, geometric, and energetic descriptors, emphasizing the need for unified, multi‐criteria approaches.
Sílvia Escayola   +2 more
wiley   +1 more source

Long‐Wavelength Ionospheric Compensation of InSAR Time‐Series Based on Global Ionosphere Maps

open access: yesGeophysical Research Letters
Uncorrected long‐wavelength contributions remain a major limitation for interpreting InSAR time‐series over large areas (>100 km). Among them, the ionosphere can impact InSAR measurements across various timescales, potentially biasing secular velocity ...
L. Marconato   +4 more
doaj   +1 more source

Fusion of GNSS and Satellite Radar Interferometry: Determination of 3D Fine-Scale Map of Present-Day Surface Displacements in Italy as Expressions of Geodynamic Processes

open access: yesRemote Sensing, 2019
We present a detailed map of ground movement in Italy derived from the combination of the Global Navigation Satellite System (GNSS) and Satellite Synthetic Aperture Radar (SAR) interferometry.
Gregorio Farolfi   +2 more
doaj   +1 more source

Compact Manifolds With Unbounded Nilpotent Fundamental Groups and Positive Ricci Curvature

open access: yesCommunications on Pure and Applied Mathematics, EarlyView.
ABSTRACT It follows from the work of Kapovitch and Wilking that a closed manifold with nonnegative Ricci curvature has a uniformly almost nilpotent fundamental group. Leftover questions and conjectures, have asked if in this context the fundamental group is actually uniformly almost abelian. The main goal of this work is to construct examples (Mk9,gk)$(
Elia Bruè, Aaron Naber, Daniele Semola
wiley   +1 more source

THE GEODESY IN THE HYDOGRAPHY [PDF]

open access: yes, 2014
The mathematics, the computer science and the physics are the foundations for many sciences, including geodesy. The Geodesy applies those disciplines to determine both size and shape of the Earth using its gravity fi eld.
Krueger, Cláudia Pereira   +1 more
core   +1 more source

Climate Vulnerability and Sovereign ESG Performance: The Conditioning Roles of Adaptation Innovation, Institutional Quality and Robot Adoption

open access: yesCorporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT The intensification of physical climate risk presents a critical question for global sustainability governance: does exposure to climate hazards strengthen or weaken a country's environmental, social and governance (ESG) performance? This study investigates the relationship between climate vulnerability and country‐level ESG performance across
Alanoud Al‐Maadid   +2 more
wiley   +1 more source

Assessment of the Performance of SWOT for Observing the Static Ocean Topography

open access: yesGeophysical Research Letters
Marine geodetic references, such as the mean sea surface (MSS), are currently limited by the spatial resolution of conventional satellite altimeters. We analyze the new swath‐altimetry data from the Surface Water and Ocean Topography (SWOT) satellite, to
Bjarke Nilsson   +2 more
doaj   +1 more source

Spatial data: from cartography to geodatabase

open access: yesGeodesy and Cartography, 2017
The final goal of this paper was to fix a brief summary on the status of geographic information in Italy due to the technological steps and national regulations.
Ugo Falchi
doaj   +1 more source

Reorganization of “Geodesy and Geophysics Office”

open access: yes, 2014
“Geodesy and Geophysics Office” was reorganized on May 15, 2013, responding to the Great East Japan Earthquake occurred on March 11, 2011. Theprimary purpose of the reorganization is to comprehensively deal with natural disasters such as large ...

core  

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