Search results for "RISA"
showing 10 items of 788 documents
La costruzione del paesaggio ibleo: reti deboli, segni forti
2017
The contribution deals with the theme of the dry stone walls’ landscape which characterizes the rural “Koinè” of the Hyblean plateau in South-Eastern Sicily. The essay analyses the main political-economic, social-territorial, constructive and typological features which make the dry walls network the landmark of the Ragusa province. Because of the modification of the economic-cultural context that produced it, the loss of knowledge of the construction techniques and the lack of public resources, the definition of an axiology of the contemporary landscape as premise for the establishment of adequate terms of value for the safeguard of this heritage is required.
Détection d'endommagement dans les composites fibres/résine à l'aide de la technologie micro-onde
2006
National audience; On présente dans cet article une méthode novatrice de contrôle non destructif d'endommagement dans les matériaux composites. Elle est fondée sur l'observation et l'analyse des modifications des propriétés diélectriques d'un milieu dues à un endommagement. Plus précisément, son originalité réside dans le fait que le diagnostic cherché est obtenu via un circuit résonant microbande soumis à un champ électromagnétique dans la gamme des micro-ondes. Dans cet article on montre la faisabilité de la méthode sur la détection de la rupture des fibres d'une éprouvette en composite unidirectionnel soumise à un effort de flexion et on indique en quoi elle possède potentiellement des a…
Disparités géographiques et convergence des régions européennes : une approche par l'économétrie spatiale
2002
The aim of this dissertation is to analyze the convergence process between European regions by taking into account spatial patterns of economic activities. First, with the help of literature reviews on theoretical and empirical analyses of growth and convergence and on economic geography models, we show in chapter 1 why geographic disparities should be introduced in the study of convergence between economies. Next, the spatial statistic and econometric tools allowing to reach this goal are detailed in chapter 2. Finally, three empirical studies of the convergence process in presence of geographic disparities are carried out. They are based on a sample for per capita GDP of 138 regions, belo…
Measurement of the SMC muon beam polarisation using the asymmetry in the elastic scattering off polarised electrons
2000
A muon beam polarimeter was built for the SMC experiment at the CERN SPS, for beam energies of 100 and 190 GeV. The beam polarisation is determined from the asymmetry in the elastic scattering off the polarised electrons of a ferromagnetic target whose magnetisation is periodically reversed. At muon energies of 100 and 190 GeV the measured polarisation is P-mu = -0.80 +/- 0.03 (stat.) +/- 0.02 (syst.) and P-mu = - 0.797 +/- 0.011 (stat.) +/- 0.012 (syst.), respectively. These results agree with measurements of the beam polarisation using a shape analysis of the decay positron energy spectrum. (C) 2000 Elsevier Science B.V. All rights reserved.
Synthesis of a labile sulfur-centred ligand, [S(H)C(PPh2S)2]-: structural diversity in lithium(i), zinc(ii) and nickel(ii) complexes
2016
A high-yield synthesis of [Li{S(H)C(PPh2S)2}]2 [Li2·(3)2] was developed and this reagent was used in metathesis with ZnCl2 and NiCl2 to produce homoleptic complexes 4 and 5b in 85 and 93% yields, respectively. The solid-state structure of the octahedral complex [Zn{S(H)C(PPh2S)2}2] (4) reveals notable inequivalence between the Zn–S(C) and Zn–S(P) contacts (2.274(1) Å vs. 2.842(1) and 2.884(1) Å, respectively). Two structural isomers of the homoleptic complex [Ni{S(H)C(PPh2S)2}2] were isolated after prolonged crystallization processes. The octahedral green Ni(II) isomer 5a exhibits the two monoprotonated ligands bonded in a tridentate (S,S′,S′′) mode to the Ni(II) centre with three distinctl…
Elaboration of a method to categorize substances of interest as regards to their potential endocrine disrupting activity: assessment and categorizati…
2021
EDCs are substances that alter function(s) of the endocrine system and consequently cause adverse health effects. The endocrine system consists of many cells and tissues that interact with each other and the rest of the body by means of hormones. This system is responsible for controlling a large number of processes in the body from gamete formation, to conception and early developmental processes such as organogenesis, and to most tissue and organ functions throughout life. EDCs interfere with endocrine function by many ways and, in doing so, lead to adverse effects on the health of humans and/or wildlife. Some of the observed health effects associated with EDCs include, butare not limited…
Le paysage nocturne de montagne, nouvelle identité visuelle et outil d’action collective pour des territoires en transitions ?
2017
Fasciolasis humana y animal en África, con enfásis en Egipto
2013
Fasciolid flukes cause fascioliasis, an helminthic disease of humans and livestock and which is transmitted by specific freshwater snails of the family Lymnaeidae, within a frame of transmission and epidemiology pronouncedly influenced by climate factors and environmental conditions. In Africa, fascioliasis is caused by the two species Fasciola hepatica and F. gigantica, giving rise to important economic losses in husbandry throughout. Research on human infection has focused on northern Maghreb countries and Egypt, whereas studies on the wide region southward from the Sahara have only been sporadic. The present Thesis includes the genetic characterisation of the lymnaeid species found in se…
Human and animal fascioliasis in andean regions of argentina: lymnaeid vectors and livestock reservoirs
2018
La fascioliasis es una enfermedad parasitaria zoonótica causada en América por Fasciola hepatica. Produce serias pérdidas económicas a la ganadería y es un importante problema en salud pública a nivel mundial. Las más altas prevalencias en humanos se hallan en regiones andinas. La especie de lymnaeido vector involucrada condiciona el escenario epidemiológico. En Argentina existía gran controversia acerca de las especies de lymnaeidos vectores presentes. Además de los bovinos, escasos estudios han considerado el rol que cumplirían otras especies domésticas y silvestres como reservorios. La fascioliasis humana ha sido considerada una enfermedad de escasa relevancia. El objetivo del presente t…
Urīna analīzes savākšanas metodes ietekme uz tās rezultātu, pacientiem ar gūžas kaula kakliņa lūzumu
2016
Bakalaura darba tēma – Urīna analīžu savākšanas metodes ietekme uz tās rezultātu pacientiem ar ciskas kaula kakliņa lūzumu. Tēmas aktualitāti nosaka X traumatoloģijas profila stacionārā aktualizējusies problēma par bieži sastopamu urīnceļu infekciju pacientiem ar ciskas kaula kakliņa lūzumu. Darba autorei, konsultējoties ar stacionāra ārstiem, radās aizdomas ka šāda problēma rodas izvēloties nepareizu urīna analīzes savākšanas tehniku. Darba mērķis ir izpētīt un analizēt urīna analīzes parauga savākšanas metodes ietekmi uz tās rezultātu, pacientiem ar ciskas kaula kakliņa lūzumu Mērķa sasniegšanai tika izvirzīti vairāki uzdevumi – literatūras analīze, urīna paraugu savākšanas metožu apskats…