Search results for "conversion"

Impugnazione erroneamente proposta e limiti alla "conversione"

2022

Conversion, here considered sub specie of the correct qualification of the appeal, is going through a period of uncertain case law. Beside some standpoints – its inapplicability to heterogeneous appeals – there still remain deep uncertainties, which can undermine the principle of favor impugnationis, with an inevitable negative impact on the effectiveness of the system of criminal remedies.

The room temperature crystal structure of a bacterial phytochrome determined by serial femtosecond crystallography

2016

Scientific reports 6, 35279 (2016). doi:10.1038/srep35279

Analyse didactique clinique des savoirs enseignés par un entraineur en basket-ball

2015

Cette recherche s’inscrit dans le cadre scientifique de la didactique clinique de l’Education Physique et Sportive (EPS). Sa caractéristique repose sur la prise en compte du sujet enseignant, de son histoire et de ses effets sur sa pratique d’enseignement. Cet article analyse la transmission du savoir par un entraîneur de basket-ball au regard de son expérience dans l’activité. L’étude de cas d’un professionnel de métier, permet de rendre compte d’une double nature de savoirs enseignés : des savoirs techniques, prioritaires et diversifiés, et des savoirs tactiques, globalement rattachés à la gestion du jeu. Elle met également en perspective l’existence d’un décalage entre les savoirs enseig…

Adenine and 2-aminopurine: Paradigms of modern theoretical photochemistry

2006

Distinct photophysical behavior of nucleobase adenine and its constitutional isomer, 2-aminopurine, has been studied by using quantum chemical methods, in particular an accurate ab initio multiconfigurational second-order perturbation theory. After light irradiation, the efficient, ultrafast energy dissipation observed for nonfluorescent 9H-adenine is explained here by the nonradiative internal conversion process taking place along a barrierless reaction path from the initially populated 1 (ππ* L a ) excited state toward a low-lying conical intersection (CI) connected with the ground state. In contrast, the strong fluorescence recorded for 2-aminopurine at 4.0 eV with large decay lifetime …

Energy transfer in diiodoBodipy-grafted upconversion nanohybrids.

2015

Steady-state and time-resolved emission studies on nanohybrids consisting of NaYF4:Yb,Er and a diiodo-substituted Bodipy (UCNP-IBDP) show that the Yb(3+) metastable state, formed after absorption of a near-infrared (NIR) photon, can decay via two competitive energy transfer processes: sensitization of IBDP after absorption of a second NIR photon and population of Er(3+) excited states.

On the role of the triplet state in the cis/trans isomerization of rhodopsin: A CASPT2//CASSCF study of a model chromophore

2011

The possibility of population of the lowest-lying triplet state (T1) in the early events of the photochemical isomerization process of a model chromophore of Rhodopsin (Rh) has been analyzed using multireference perturbation theory (CASPT2//CASSCF) methods. It is shown that the characteristics of the isomerization process namely small S1−T1 gap, presence of hydrogen out of plane active vibrational modes, and existence of a dense manifold of vibrational states, render possible the fulfilment of the conditions needed for the population of T1. The possible consequences for the photochemistry and photophysics of Rh are also discussed. © 2011 Wiley Periodicals, Inc. Int J Quantum Chem 111:3431–3…

Development of sustainable ORC applications in the tertiary sector: a case study in the Mediterranean climate

2022

Abstract In recent decades, climate change strong advancement has led many countries, especially the most developed ones, to a greater sense of environmental responsibility. On a global, European and national level, adaptation/mitigation strategies and actions aimed at improving energy-environmental sustainability and resilience in the tertiary sectors have been increasingly intensified. In this sector, therefore, plays a fundamental role the integration/introduction of technologies able to operate an efficient conversion of energy, such as indeed Organic Rankine Cycle (ORC) plant, other than renewable energy sources, in order to reduce both energy consumption and pollutant emissions. Withi…

Electrochemical conversion of Carbon Dioxide: effect of operating parameters and of the reactor on the performances of the process.

2017

Determination of absolute internal conversion coefficients using the SAGE spectrometer

2016

A non-reference based method to determine internal conversion coefficients using the SAGE spectrometer is carried out for transitions in the nuclei of 154Sm, 152Sm and 166Yb. The Normalised-Peak-to-Gamma method is in general an efficient tool to extract internal conversion coefficients. However, in many cases the required well-known reference transitions are not available. The data analysis steps required to determine absolute internal conversion coefficients with the SAGE spectrometer are presented. In addition, several background suppression methods are introduced and an example of how ancillary detectors can be used to select specific reaction products is given. The results obtained for …

Efficient Conversion of Light to Chemical Energy : Directional, Chiral Photoswitches with Very High Quantum Yields

2020

Abstract Photochromic systems have been used to achieve a number of engineering functions such as light energy conversion, molecular motors, pumps, actuators, and sensors. Key to practical applications is a high efficiency in the conversion of light to chemical energy, a rigid structure for the transmission of force to the environment, and directed motion during isomerization. We present a novel type of photochromic system (diindane diazocines) that converts visible light with an efficiency of 18 % to chemical energy. Quantum yields are exceptionally high with >70 % for the cis–trans isomerization and 90 % for the back‐reaction and thus higher than the biochemical system rhodopsin (64 %). T…