Results 41 to 50 of about 3,607 (229)

Eco‐Friendly Synthesis of Cobalt Phthalocyanine for High‐Efficiency CO2${\rm CO}_{2}$ Electroreduction

Chemistry – A European Journal, EarlyView.
A sustainable synthesis of cobalt phthalocyanine (CoPc) using low‐impact solvents yields high‐performance electrocatalysts with reduced waste (E‐factor 18.6). When integrated into gas diffusion electrodes, CoPc achieves up to 12% Faradays efficiency for CO2‐to‐methanol and 65% CO2‐to‐CO conversion, aligning with state‐of‐the‐art materials and enabling ...
Gloria Zanotti, Federica Palmeri, Venanzio Raglione, Abdolhamid Khodadadi, Camille Tabaries, Jerome Capitolis, Mathieu Prevot, Laurent Piccolo, Mahmoud Zendehdel, Roberto Flammini, Giorgio Contini   +10 more
wiley   +1 more source

Generalized equations of Mathieu

Vestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2011
Summary: We consider non-local model of wave process, which generalizes the classical model of parametric resonance Mathieu. It is proved that this model has a unique solution.
openaire   +2 more sources

Metal‐Ion Regulated Light‐Free Z→E Isomerization of Azobenzene Glycomacrocycle

Chemistry – A European Journal, EarlyView.
Metal ion‐catalyzed Z→E isomerization of photoswitchable azobenzene glycomacrocycle: A new azobenzene‐based glycomacrocycle is capable of forming a 1:1 complex with divalent metal ions in both E‐ and Z‐isomers. The complexes undergo light‐free Z→E isomerization in a timescale spanning from seconds to weeks.
Yang Zhou, Jinbiao Jiao, Mathieu Lordez, Jean‐Yves Salpin, Juan Xie   +4 more
wiley   +1 more source

Combinatorial approach to Mathieu and Lamé equations [PDF]

Journal of Mathematical Physics, 2015
Based on some recent progress on a relation between four dimensional super Yang-Mills gauge theory and quantum integrable system, we study the asymptotic spectrum of the quantum mechanical problems described by the Mathieu equation and the Lamé equation.
openaire   +3 more sources

A Multilevel Framework of Employee Environmental Initiatives: The Role of Departmental Climate, Departmental Management's Green Leadership, and Corporate Environmental Responsibility

Corporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT This study develops a multilevel framework to examine how employees' discretionary environmental initiatives are shaped by organizational and departmental contexts. Using survey data from 150 employees across 25 organizations, we integrate organizational climate and leadership theories to investigate the effects of Corporate Environmental ...
Yousef Eiadat
wiley   +1 more source

INVESTIGATION OF DYNAMIC STABILITY OF FLEXIBLE WAVEGUIDES FOR ULTRASONIC THROMBECTOMY

Наука и техника, 2011
The paper presents results of mathematical modelling of dynamic stability of flexible ultrasonic waveguides applied in engineering and medicine, particularly, in minimally-invasive surgery. By means of the Bubnov-Galerkin method an equation of parametric
D. A. Stepanenko, V. T. Mincheny
doaj  

The oscillator's model with broken symmetry

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2015
The equations of the oscillator motion are considered. The exact solutions are given in the form of exponents with an additional parameter that characterizes the asymmetry of the oscillations.
Dmitry B Volov
doaj   +1 more source

Impact of Electronic Substitution and Planarization on the Photophysical Properties of 2‐(2′‐Hydroxyphenyl)benzoxazole or 2‐(2′‐Hydroxyphenyl)‐Dimethylindole

European Journal of Organic Chemistry, EarlyView.
We report the synthesis, structural characterization, and photophysical investigation of a series of Excited‐State Intramolecular Proton Transfer‐active HBO and HDMI derivatives. By varying heterocyclic cores, substituents, and ethynyl planarization, we establish structure–property relationships governing fluorescence behavior.
Mathieu Gervais, Timothée Stoerkler, Gilles Ulrich, Pascal Retailleau, Tristan Asset, Adèle D. Laurent, Denis Jacquemin, Julien Massue   +7 more
wiley   +1 more source

Parametric oscillations of the mechanical systems

MATEC Web of Conferences, 2018
This paper deals with an approximative solution in the analytical form of some second order linear differential equation with time depend parameters. The analytic solution is compared with the numerical solution obtained by Runge-Kutta method and the ...
Ftorek Branislav, Oršanský Pavol, Šamajová Helena   +2 more
doaj   +1 more source

Association between annual twin delivery volume and severe postpartum hemorrhage in twin pregnancies

International Journal of Gynecology &Obstetrics, EarlyView.
Abstract Objective To assess the association between the risk of severe postpartum hemorrhage (PPH) and the annual twin delivery volume of maternity units. Methods JUmeaux MODe d'Accouchement (JUMODA) was a national observational prospective population‐based cohort of twin deliveries in 176 French maternity units performing more than 1500 annual ...
Victoire Pauphilet, François Goffinet, Aurelien Seco, Catherine Deneux‐Tharaux, Diane Korb, Thomas Schmitz, for the JUmeaux MODe d'Accouchement (JUMODA) study group and the Groupe de Recherche en Obstétrique et Gynécologie (GROG)   +6 more
wiley   +1 more source