Search results for "Dew"
showing 10 items of 217 documents
Quantized current source with mesoscopic feedback
2011
We study a mesoscopic circuit of two quantized current sources, realized by nonadiabatic single-electron pumps connected in series with a small micron-sized island in between. We find that quantum transport through the second pump can be locked onto the quantized current of the first one by a feedback due to charging of the mesoscopic island. This is confirmed by a measurement of the charge variation on the island using a nearby charge detector. Finally, the charge feedback signal clearly evidences loading into excited states of the dynamic quantum dot during single-electron pump operation. © 2011 American Physical Society.
Light trapping by plasmonic nanoparticles
2020
Abstract Metallic nanoparticles sustaining localized surface plasmon resonances are of great interest for enhancing light trapping in thin film photovoltaics. In this chapter, we explore the correlation between the structural and optical properties of self-assembled silver nanostructures fabricated by a solid-state dewetting process on various substrates relevant for silicon photovoltaics and later integrated into plasmonic back reflectors. Our study allows us to optimize the performance of nanostructures by identifying the fabrication conditions in which desirable circular and uniformly spaced nanoparticles are obtained. Second, we introduce a novel optoelectronic spectroscopic method that…
Frank H. Knight, pragmatism, and American institutionalism: A note
2009
This note deals with the debated question of whether, and to what extent, Frank Knight's epistemology was consistent with the general philosophy of American pragmatism. First, in accord with recent interpretations, I provide new evidence illustrating that Knight's views on science, knowledge and related philosophical topics present some important similarities with the pragmatic tradition. Second, I attempt to demonstrate that Knight's unsympathetic reading of Dewy and pragmatism was, to a relevant extent, a consequence of his aversion to the so-called scientific wing of American interwar institutionalism. © 2009 Taylor & Francis.
A parts-per-billion measurement of the antiproton magnetic moment
2017
The magnetic moment of the antiproton is measured at the parts-per-billion level, improving on previous measurements by a factor of about 350. Comparing the fundamental properties of normal-matter particles with their antimatter counterparts tests charge–parity–time (CPT) invariance, which is an important part of the standard model of particle physics. Many properties have been measured to the parts-per-billion level of uncertainty, but the magnetic moment of the antiproton has not. Christian Smorra and colleagues have now done so, and report that it is −2.7928473441 ± 0.0000000042 in units of the nuclear magneton. This is consistent with the magnetic moment of the proton, 2.792847350 ± 0.0…
Atmospheric correction of optical imagery from MODIS and Reanalysis atmospheric products
2010
article i nfo In this paper we analyze the differences obtained in the atmospheric correction of optical imagery covering bands located in the Visible and Near Infra-Red (VNIR), Short-Wave Infra-Red (SWIR) and Themal-Infrared (TIR) spectral regions when atmospheric profiles extracted from different sources are used. In particular, three sensors were used, Compact High Resolution Imaging Spectrometer (CHRIS), Advanced Spaceborne Thermal Emission and Reflection radiometer (ASTER) and Landsat5 Thematic Mapper (TM), whereas four atmospheric profiles sources were considered: i) local soundings launched near the sensor overpass time, ii) Moderate Resolution Radiometer (MODIS) atmospheric profiles…
The CoSMOS L-band experiment in Southeast Australia
2007
The CoSMOS (Campaign for validating the Operation of the Soil Moisture and Ocean Salinity mission) campaign was conducted during November of 2005 in the Goulburn River Catchment, in SE Australia. The main objective of CoSMOS was to obtain a series of L-band measurements from the air in order to validate the L-band emission model that will be used by the SMOS (Soil Moisture and Ocean Salinity) ground segment processor. In addition, the campaign was designed to investigate open questions including the Sun-glint effect over land, the application of polarimetric measurements over land, and to clarify the importance of dew and interception for soil moisture retrievals. This paper summarises the …
When, why, and how to perform wire-based antegrade dissection and reentry technique
2022
Antegrade dissection and reentry (ADR) refers to an attempt to cross a coronary chronic total occlusion (CTO) lesion through wire and/or equipment passage in the subintimal space followed by reentry to the distal true lumen. From the original subintimal tracking and reentry (STAR) technique description by Colombo in 2005, refinement of the technique, improved characteristics of the microcatheters and wires, and better understanding of subadventitial vessel trauma have led to higher success rates, lower complications rates, and improved long-term outcomes. In this chapter, we discuss the technique, its outcomes, and limitations.
La notion de croissance chez Dewey et Rorty
2010
National audience; La notion de croissance revêt deux types d'aspects : quantitatif et qualitatif. Le premier évoque l'accroissement, l'augmentation ou le changement physiologique. Le deuxième concerne l'enrichissement, l'accomplissement de la personne ; il est lié à la tâche éducative. Les philosophes américains John Dewey et Richard Rorty s'accordent à souligner la "nécessaire indétermination" du terme "croissance", afin de laisser ouvertes les perspectives d'évolution. Cependant, leurs points de vue divergent quant à la valorisation des périodes de l'enfance. L'un souligne la créativité et la singularité de l'adolescence, tandis que l'autre se refuse à établir une telle distinction. L'an…
USE OF NATURAL PRODUCTS FOR THE CONTROL OF POWDERY MILDEW OF ROSE PLANTS
2007
PowDery mildew caused by Podosphaera pannosa (Wallr. Fr.) De Bary on roses in greenhouse cultivation is usually controlled by chemical products. Aiming to lower the use of chemical treatments, in vitro and in planta assays were carried out using some natural products. The inhibitory effect of essential oils extracted from oregano inflorescences (Origanum heracleoticum L.) and cloves (Syzygium aromaticum L. Merril et L.M. Perry), was evaluated by in vitro tests. Essential oil at 0.5, and 0.125 ml/L concentration was added to conidia suspension (8 x 105 conidia/ml). After 2, 4, 8, 12, 24 and 48 hours, 400 conidia for each treatment and control were evaluated and the germination percentage cal…