Search results for "RILL"

New epicardial mapping electrode with warming/cooling function for experimental electrophysiology studies

2010

Cardiac electrical activity is influenced by temperature. In experimental models, the induction of hypothermia and/or hyperthermia has been used for the study of mechanisms of cardiac arrhythmia. A system that allows for localized, controlled induction, besides simultaneously recording electrical activity in the same induced area, needs to be developed ad hoc. This article describes the construction and application of a new system capable of locally modifying the epicardial temperature of isolated hearts and of carrying out cardiac mapping with sufficient spatial resolution. The system is based on a thermoelectric refrigerator and an array of 128 stainless steel unipolar electrodes in encap…

Evaluating the effects of forest tree species on rill detachment capacity in a semi-arid environment

2021

Abstract The beneficial effects of plant roots in decreasing soil detachment in forest ecosystems exposed to rill erosion are well known. However, these effects vary largely between different plant species. There has been lots of research into the relationship between root-soil systems and rill erodibility with a particular focus on grass species. Conversely, fewer studies are available for tree species, especially in forests of semi-arid or arid environments. Greater knowledge is therefore needed to identify the most effective tree species against rill erosion in these ecosystems, where water availability is the limiting factor for vegetation growth and afforestation is often the only solu…

Measuring Field Rill Erodibility by a Simplified Method

2015

Many process-oriented erosion prediction models reproduce rill erosion as affected by site-specific parameters, as for example, rill erodibility, and thus, their practical application requires the measurement of these parameters or their estimate. The aim of this paper was establishing a method for indirectly measuring field rill erodibility. A simple mathematical approach based on a known soil detachment equation and accounting for the rill erosion dynamic process is applied. Field measurements carried out for seven natural rainfall events occurring at the plots of the Sparacia experimental station, southern Italy, are used for indirectly measuring the rill erodibility of the investigated …

Similitudine nelle caratteristiche morfologiche dei rill e degli ephemeral gully

2008

Caratterizzazione morfologica e idraulica dei rill rilevati nell'area sperimentale di Masse

2012

Nella memoria sono riportati i risultati di un’analisi finalizzata alla validazione in ambiente Umbro di modelli per la quantificazione e la caratterizzazione morfologico-idraulica delle formazioni rill. A tale scopo sono state utilizzate le misure effettuate presso la stazione sperimentale per il monitoraggio dei processi erosivi a scala di parcella in località Masse (Umbria). In seguito a due eventi erosivi (11-01-2010 e 16-05-2011) che hanno prodotto la formazione di rill, è stato effettuato il rilievo della morfologia (lunghezza e sezione) e del profilo degli stessi. Il database di Masse è stato utilizzato, in primo luogo, per la validazione della relazione di potenza che permette la st…

Misura dell'erosione rill mediante rilievo aereo a bassa quota

2014

Erythrocyte aggregation in nonvalvular atrial fibrillation

2001

De la reconciliación a la Transición. Y en medio, Santiago Carrillo.

2019

International audience

Defect Detection in Additively Manufactured Components: Laser Ultrasound and Laser Thermography Comparison

2018

Despite continuous technological advances in additive manufacturing, the lack of non-destructive inspection techniques during the manufacturing process is a limit for the industrial breakthroughs. Additive manufacturing is mainly used in industrial sectors where the zero defect target is crucial. The inclusion of the integrity assessment into the additive manufacturing process would allow corrective actions to be performed before the component is completed. To this end, the development of in-process monitoring and processing techniques is of great interest.This work proposes and compares two remote non-destructive inspection techniques: laser ultrasound and laser thermography. The two techn…

Drilling characteristics and properties analysis of fiber reinforced polymer composites: A comprehensive review

2023

Fiber-reinforced polymer (FRP) composites play a vital role in the production of structural and semi-structural components for engineering applications. The drilling process is a commonly employed machining process for FRP composites to join the FRP structural elements. Usually, the FRP composites possess a heterogeneous nature because of their multi-layered structure, hybridization, and the presence of multi-phase materials. Hence, common problems like delaminations, fuzzing, buckling, cracking, matrix and fiber burning occur during the drilling operations. These problems cause dimensional inaccuracy, poor surface finish, and tool wear and reduce the mechanical strength of the composites. …