Results 11 to 20 of about 209,117 (228)

Ultrasound-Assisted Heterogeneous Synthesis of Bio-Based Oligo-Isosorbide Glycidyl Ethers: Towards Greener Epoxy Precursors

Molecules, 2019
The substitution of toxic precursors such as bisphenol A by renewable and safer molecules has become a major challenge. To overcome this challenge, the 12 principles of green chemistry should be taken into account in the development of future sustainable
Corentin Musa, Pierre-Edouard Danjou, Antoine Pauwels, Francine Cazier-Dennin, François Delattre   +4 more
doaj   +1 more source

Finite difference time domain simulation of the Earth-ionosphere resonant cavity: Schumann resonances [PDF]

, 2005
This paper presents a numerical approach to study the electrical properties of the Earth's atmosphere. The finite-difference time-domain (FDTD) technique is applied to model the Earth's atmosphere in order to determine Schumann resonant frequencies of ...
Craddock, IJ, Morente, JA, Navarro, E, Paul, DL, Porti, JA, Soriano, A   +5 more
core   +2 more sources

Potential CO₂ measurement capabilities of a transportable Near Infrared Laser Heterodyne Radiometer (LHR) [PDF]

Atmospheric Measurement Techniques
In this study, heterodyne detection enables high spectral resolution, which in turn enhances the vertical sensitivity of ground-based CO2 measurements.
M. T. El Kattar, T. Wei, A. Saxena, H. Herbin, W. Chen   +4 more
doaj   +1 more source

4-Methoxy-ortho-phthalaldehyde: a promising derivatizing agent for the fluorimetric evaluation of histamine in seafood

Talanta Open, 2020
Histamine, the molecule associated with food poisoning, is nowadays considered as a reliable marker of seafood freshness and therefore its rapid and easy quantification appears critical. Existing method like HPLC or direct fluorimetric analysis employing
Clémence Moitessier, Khémesse Kital, Pierre-Edouard Danjou, Francine Cazier-Dennin   +3 more
doaj   +1 more source

Gender, Schaffensprozess und musikalische Analyse. Clara Schumanns Drei gemischte Chöre (1848) [PDF]

Zeitschrift der Gesellschaft für Musiktheorie, 2020
Der Beitrag befasst sich mit den 1848 komponierten Drei gemischten Chören von Clara Schumann, die wie nur wenige andere ihrer Kompositionen Einblick in das künstlerische Miteinander des Paares Schumann erlauben: Ihre Entstehung verdankt sich den ...
Thomas Wozonig
doaj   +1 more source

A new portable ELF Schumann resonance receiver: design and detailed analysis of the antenna and the analog front-end

EURASIP Journal on Wireless Communications and Networking, 2018
Schumann resonance oscillation detection is a complex procedure which requires customized and high-quality measurement systems. The primary objective of this work was to design and implement a stand-alone, portable, and low-cost receiver able to measure ...
Constantinos I. Votis, Giorgos Tatsis, Vasilis Christofilakis, Spyridon K. Chronopoulos, Panos Kostarakis, Vasilis Tritakis, Christos Repapis   +6 more
doaj   +1 more source

Evidence on a link between the intensity of Schumann resonance and global surface temperature [PDF]

Annales Geophysicae, 2006
A correlation is investigated between the intensity of the global electromagnetic oscillations (Schumann resonance) with the planetary surface temperature.
M. Sekiguchi, M. Hayakawa, A. P. Nickolaenko, Y. Hobara, Y. Hobara   +4 more
doaj   +1 more source

Amar Schumann

Opus, 2019
Aimer Schumann (“Amar Schumann”) é o título do prefácio de Roland Barthes (12/11/1915, Cherburgo, Cherbourg-en-Cotentin, França - 26/03/1980, Paris, França), eminente escritor, semiólogo, filósofo e pensador da cultura do século XX, para o livro La ...
Roland Barthes, Salomea Gandelman (Tradução)   +1 more
doaj   +1 more source

La massoneria italiana durante il fascismo

Incontri: Rivista Europea di Studi Italiani, 2017
Recensione di:Nicoletta Casano, Libres et persecutés. Francs-maçons et laïques en exil pendant le fascisme, Paris, Garnier, 2016, 276 p. (compresi bibliografia, indice dei nomi e indice degli argomenti), ISBN: 9782812451430, € 32.
Stefano Magni
doaj   +1 more source

ELF Electromagnetic Waves from Lightning: The Schumann Resonances

Atmosphere, 2016
Lightning produces electromagnetic fields and waves in all frequency ranges. In the extremely low frequency (ELF) range below 100 Hz, the global Schumann Resonances (SR) are excited at frequencies of 8 Hz, 14 Hz, 20 Hz, etc.
Colin Price
doaj   +1 more source