Results 1 to 10 of about 3,240,951 (290)

Electron Paramagnetic Resonance Spectroscopy

CHIMIA, 2001
A survey of the activities of the EPR group at ETH is given. The different research areas are discussed briefly and a particular project is highlighted.
Carlos Calle, Sabine Van Doorslaer, Stefan Stoll, Zoltan Mádi, Lorenz Liesum, Walter Lammler, Moritz Kälin, Jeffrey Harmer, Willi Groth, Igor Gromov, Josef Granwehr, Jörg Forrer, Cinzia Finazzo, Rüdiger-A. Eichel, Arthur Schweiger   +14 more
doaj   +2 more sources

Caracterização de adubos orgânicos por espectroscopia de ressonância paramagnética eletrônica Characterization of organic fertilizers by electron paramagnetic resonance

Revista Brasileira de Ciência do Solo, 2007
O aumento do interesse na produção dos alimentos denominados orgânicos fez crescer a demanda por insumos com características adequadas para atender a esse sistema de produção.
Marcelo Luiz Simões, Wilson Tadeu Lopes da Silva, Sergio da Costa Saab, Larissa Macedo dos Santos, Ladislau Martin-Neto   +4 more
doaj   +1 more source

EPR Kindred Methodologies for Multiversal FTL Communication

No faster-than-light (FTL) communication device exists today. This paper does not propose a hardware design, but instead examines—in a speculative, pre-device framework—how the FTL pipeline linking two hypothetical communicators would behave under the combined constraints of quantum mechanics (QM) and relativity.
openaire   +2 more sources

Distributions of molecular conformations and interactions revealed by EPR spectroscopy - methodology and application to hnRNPA1

, 2019
Proteins are long chains of peptide-bond linked amino acids, which have the fascinating ability to fold into a huge variety of three-dimensional shapes. To describe peptide sequences that have particularly large conformational flexibility, the umbrella terms intrinsically disordered domains (IDDs), resp. proteins (IDPs) have emerged.
openaire   +2 more sources

Mechanism of Antiradical Activity of Coumarin-Trihydroxybenzohydrazide Derivatives: A Comprehensive Kinetic DFT Study

Antioxidants
As part of this study, the mechanisms of the antioxidant activity of previously synthesized coumarin–trihydrobenzohydrazine derivatives were investigated: (E)-2,4-dioxo-3-(1-(2-(2″,3″,4″-trihydroxybenzoyl)hydrazineyl)ethylidene)chroman-7-yl acetate (1 ...
Žiko Milanović, Dušan Dimić, Edina H. Avdović, Dušica M. Simijonović, Đura Nakarada, Vladimir Jakovljević, Radiša Vojinović, Zoran S. Marković   +7 more
doaj   +1 more source

Estimating the settlement of board piles socketed in rock using explainable and symbolic regression techniques for optimized deep foundation performance and sustainable design

Discover Applied Sciences
Accurate prediction of settlement in bored piles socketed in rock remains a significant geotechnical challenge due to the complex nonlinear interaction between pile geometry, material properties, and loading conditions. This study develops an explainable
Nestor Ulloa, Diego Cajamarca Carrazco, Danilo Fernando Fernandez Vinueza, Félix García, Kennedy C. Onyelowe, Viroon Kamchoom   +5 more
doaj   +1 more source

Economocracy: Global Economic Governance

Economies
Economic systems face critical challenges, including widening income inequality, unemployment driven by automation, mounting public debt, and environmental degradation.
Constantinos Challoumis
doaj   +1 more source

First Synthesis of C-Phenyl N-tert-Butyl [¹⁵N]nitrone (PBN-¹⁵N) for the EPR Spin Trapping Methodology

Zeitschrift für Naturforschung B, 1996
As compared to normal PBN, about fifty percent increase of electron paramagnetic resonance (EPR) spin trapping sensitivity has been gained by using a new 100% 15N-enriched spin trap, C-phenyl N-tert-butyl[15N]nitrone (PBN-15N). PBN-15N has been prepared by a convenient four-step route using ammonium-15N chloride as the starting material. This synthetic
openaire   +1 more source

Shoreline change detection along the eastern coast of Ghana: leveraging GIS and advanced remote sensing techniques

Scientific Reports
Recent advancements in automated shoreline detection methods have transformed the monitoring of Ghana’s coastline dynamics. This study measures the rates of shoreline change along Ghana’s eastern coastline using the USGS Digital Shoreline Analysis System
Baah Asare-Bediako, Faustina Awafu, Evans Y. Boakye, Emmanuel Boahen, Cyril D. Boateng, David D. Wemegah, Akyana Britwum, Michael K. E. Donkor, Jeffrey N. A. Aryee, Emmanuel K. Brempong, Leonard K. Amekudzi   +10 more
doaj   +1 more source

Predictive modeling of wide-shallow RC beams shear strength considering stirrups effect using (FEM-ML) approach

Scientific Reports
This paper presents an analysis and prediction of the shear strength of wide-shallow reinforced concrete beams, utilizing Finite Element Analysis (FEA) and machine learning techniques.
Ahmed A. Soliman, Dina M. Mansour, Ayman H. Khalil, Ahmed Ebid   +3 more
doaj   +1 more source