Search results for "Morpho"
showing 10 items of 3236 documents
Stress sensitivity of stylolite morphology
2009
International audience; Stylolites are rough surfaces that form by localized stress-induced dissolution. Using a set of limestone rock samples collected at different depths from a vertical section in Cirque de Navacelles (France), we study the influence of the lithostatic stress on the stylolites morphology on the basis of a recent morphogenesis model. We measured the roughness of a series of bedding-parallel stylolites and show that their morphology exhibits a scaling invariance with two self-affine scaling regimes separated by a crossover-length (L) at the millimeter scale consistent with previous studies. The importance of the present contribution is to estimate the stylolite formation s…
Maxillary sinus lift with intraoral autologous bone and B ? Tricalcium Phosphate : histological and histomorphometric clinical study
2007
Introduction: Rehabilitation with implants in the upper maxilla often implies a challenge due to the shortage and quality of the remaining bone. Different kinds of grafts have been described in an endeavour to solve these problems. Aim: The purpose of this study was to assess the osteoconduction potential of an autogenous bone and B-Tricalcium Phosphate mixture, in the treatment of atrophic upper maxillae. Materials and Methods: 22 patients were treated using the "sinus lift" technique. All patients had residual bone equal to or greater than 5 mm, the sinus was lifted, bone grafted and implants installed during the same surgical procedure (autologous bone and B- Tricalcium Phospahate). Duri…
Amorphous silicon nanotubes
2017
In the following, the attention will be focused on the silicon nanotube (SiNTs) that is a highly desired form of silicon for its fundamental role in the miniaturization trend of the electronic devices. After a description of the properties and applications of SiNTs and their fabrication methods, the attention will be focused on chemical vapour deposition (CVD) template synthesis that is the most usual synthetic method for this material. Then, galvanic template synthesis will be described as a general method for the fabrication of different metals and oxides nanostructures, therefore the use of this technique for synthesizing SiNTs will be detailed. Characterization methods will be also desc…
Morphologie und Syntax im Projekt ALD-DM
2017
Quest'articolo prende l'avvio dal contributo presentato al VI Colloquium Retoromanistich (cf. Bauer 2016) e offre un'analisi linguistica tra le varietà ladine e la quantificazione statistica degli aspetti morfologici e sintattici secondo il quadro teorico del progetto ALD-DM (Università di Salisburgo). All'interno del progetto, l'interpretazione fonetica e lessicale sulla base delle carte dell'atlante del ladino dolomitico (ALD) è invece già stata completata (pubblicazione della prima parte: 1998; della seconda parte: 2012). Dopo una breve introduzione al progetto, in quest'articolo si discutono tre aspetti morfosintattici (per es. l'omofonia delle desinenze verbali di terza persona singola…
A Method to Extract the Complete Fiber Network Topology of Planar Fibrous Tissues and Scaffolds.
2010
Improving fabrication protocols and design strategies, investigating on how scaffold architecture affects cell morphology, metabolism and phenotypic expression, predicting mechanical behaviors, have increasingly become crucial goals in the development of engineered tissue scaffolds. In the present study, an image-based analysis approach that provides an automatic tool to fully characterize engineered tissues fiber network topology was developed. The following micro architectural features are detected: fiber angle distribution, fiber connectivity, fiber overlap spatial density, fiber diameter. In order to demonstrate the potential of this approach Electrospun poly(ester urethane)urea (ES-PEU…
Rill flow velocity and resistance law: A review
2022
Rills caused by runoff concentration on erodible hillslopes generally have very irregular longitudinal profiles and cross-section shapes. Rill erosion directly depends on the hydraulics of flow within the rills which may differ greatly from that in larger and regular channels like streams or rivers. At first, in this paper, a review of the two different approaches to estimate rill flow velocity, based on flow regime and flow resistance laws, is presented. Recent advances in measurements of rill geometry by the three-dimensional photo-reconstruction (3D-PR) technique, which allows one to obtain a Digital Terrain Model (DTM) by low-altitude aerial and terrestrial photogrammetry, are also disc…
Laudun-l'Ardoise (30), Excoutellier
2021
Le diagnostic de l’Excoutellier a permis de confirmer la présence d’un site protohistorique pointé dans les années 1990 par les prospections menées par le groupe archéologique de la vallée de La Tave et coordonnées par Hervé Petitot. Installée sur le flanc sud-ouest du plateau de Lacau, cette occupation de bas de pente se caractérise par quelques aménagements fossoyés associés à des structures de combustion. Un mobilier relativement riche (plus de 1600 fr. de céramique) permet d’envisager une mise en place de l’occupation à la toute fin de l’âge du Bronze, occupation qui dure probablement jusqu’aux premiers temps de l’âge du Fer. Malgré la mise en terrasses du secteur à la période moderne, …
Occupations protohistoriques et médiévales en marge du village actuel de Ruvigny : Ruvigny, Aube "Proche l'Eglise". Document final de synthèse
2018
L’occupation se caractérise tout d’abord par une batterie au moins une soixantaine de silos de la transition entre le premier et le second Âge du Fer avec un bruit de fond Néolithique (mobilier résiduel) et Bronze final (quelques fosses et silos). Certains de ces silos ont livré un important mobilier céramique qui, couplé à des rejets de forges et des objets attestant d’un travail de tissage, pourrait indiquer la présence d’un habitat associé à proximité immédiate. L’activité métallurgique est attestée dès le Hallstatt D3.Si aucune inhumation n’a été retrouvé dans les silos, quelques ossements humains épars ont été prélevé dans quatre d’entre eux. Il faut également noter la présence du dépô…
Ti Alloyed α-Ga2O3: Route towards Wide Band Gap Engineering
2020
The suitability of Ti as a band gap modifier for &alpha
Submarine Slope Failures Along the Northern Sicilian Continental Margin (Southern Tyrrhenian Sea) and Possible Implications for Geo-Hazard
2013
Mass wasting and downslope movements are common processes that have contributed to shape the northern Sicilian continental margin (southern Tyrrhenian Sea) since the Late Quaternary. Nevertheless, processes controlling their evolution are still partially unknown and a variety of geologic factors can be responsible for their formation. In this work we present an overview of the main mass wasting features (submarine canyons, landslides, debris flows) observed and mapped in different sectors of the northern Sicilian margin. The margin is characterized by a narrow, steep continental shelf (1-2°) and a very irregular and steep (6-8°) upper slope. The main aims of this work are: (1) to outline th…