Search results for " Character"

Photoelectric valuation of highly efficient Dye-Sensitized Solar Cells

2015

Nowadays, a growing demand for free and clean energy requires the study and the development of new low-cost solar photovoltaic (PV) cells. Among them, Dye Sensitized Solar Cells (DSSCs) based on ruthenium complexes as sensitizers are assuming a great importance. The DSSCs under study are composed placing in succession a transparent conductive glass on which is screen-printed a mesoporous TiO2 thin film sensitized by a ruthenium based dye (N719) , an electrolytic solution containing a redox couple (I-/I3-) and another conductive glass covered by a thin transparent catalyst platinum film. In this work, we have measured the main photoelectrochemical parameters of the above mentioned DSSCs at d…

Light Soaking measurements on Ruthenium-based Dye Sensitized Solar Cells

2016

An interesting phenomenon occurring in Dye Sensitized Solar Cells (DSSCs) when exposed to an uninterrupted period of illumination is the so-called light soaking effect, which consists in the increase of the main electrical parameters of the cell, such as the photocurrent and the efficiency. Studying such an effect has noteworthy practical implications, ranging from the optimization of the manufacturing process to stability tests of DSSCs. In this paper, we present an experimental investigation on the performance variation, due to light soaking, of Ruthenium-based DSSCs.

Local methods for complex spatio-temporal point processes

2022

Spray nozzle characterization using high speed imaging techniques

2013

International audience; Spray characteristics play an important role in the application accuracy and efficiency of plant protection products. In this study, the spray angles, liquid sheet lengths and spray shapes of five hydraulic spray nozzles (Albuz ATR orange, Albuz ATR red, TeeJet XR 110 01, TeeJet XR 110 04 and TeeJet AI 110 04) were measured using a developed high speed imaging system. Results were compared with the results of existing measuring techniques using a flow rate test bench, a horizontal patternator and a Phase Doppler Particle Analyzer (PDPA) laser.

Scenari dell'alterità: rappresentazioni diacroniche di italiani in Irlanda.

2019

Il saggio intende offrire un'analisi diacronica delle rappresentazioni letterarie dello stereotipo dell'italiano nella letteratura anglo-irlandese moderna e contemporanea. Partendo da riflessioni teoriche sul concetto di alterità e studi critici di Imagologia, si cerca di individuare eventuali variazioni diacroniche dovute a mutati contesti storico-sociologici (Brexit).

Characterization of rhenium oxide films and their application to liquid crystal cells

2009

Rhenium trioxide exhibits high electronic conductivity, while its open cubic crystal structure allows an appreciable hydrogen intercalation, generating disordered solid phases, with protonic conductivity. Rhenium oxide thin films have been obtained by thermal evaporation of ReO3 powders on different substrates, maintained at different temperatures, and also by reactive magnetron sputtering of a Re metallic target. A comparative investigation has been carried out on these films, by using micro-Raman spectroscopy and x-ray diffraction. Two basic types of solid phases appear to grow in the films: a red metallic HxReO3 compound, with distorted perovskite structures, like in the bulk material, a…

The skill in materials selection and processing at the Serpotta's studio during the baroque period in Palermo

2010

On the correlation of psychological characteristics within recreational marathon runners

2015

Oschwald Miles, 2015. On the Correlation of Psychological Characteristics Within Recreational Marathon Runners. Master’s Thesis in Sport and Exercise Psychology. Department of Sport Science. University of Jyväskylä. University of Jyväskylä. 40 p. The purpose of this research study was to explore the performance related experiences of recreational marathon runners. Specifically, the relationship these experiences have with other psychological constructs involved in undertaking and maintaining participation in a given sport. Using self-report measures the psychobiosocial states prior to most successful performances, achievement goal orientations, motivation and regulation for sport participat…

Diaboliskie spēki Raiņa dramaturģijā

2013

Elektroniskā versija nesatur pielikumus

Saddle index properties, singular topology, and its relation to thermodynamic singularities for aϕ4mean-field model

2004

We investigate the potential energy surface of a ${\ensuremath{\phi}}^{4}$ model with infinite range interactions. All stationary points can be uniquely characterized by three real numbers ${\ensuremath{\alpha}}_{+},{\ensuremath{\alpha}}_{0},{\ensuremath{\alpha}}_{\ensuremath{-}}$ with ${\ensuremath{\alpha}}_{+}+{\ensuremath{\alpha}}_{0}+{\ensuremath{\alpha}}_{\ensuremath{-}}=1$, provided that the interaction strength $\ensuremath{\mu}$ is smaller than a critical value. The saddle index ${n}_{s}$ is equal to ${\ensuremath{\alpha}}_{0}$ and its distribution function has a maximum at ${n}_{s}^{\mathrm{max}}=1∕3$. The density $p(e)$ of stationary points with energy per particle $e$, as well as…