Search results for "TG"

Extraordinary rocks from the peak ring of the Chicxulub impact crater: P-wave velocity, density, and porosity measurements from IODP/ICDP Expedition …

2018

Joint International Ocean Discovery Program and International Continental Scientific Drilling Program Expedition 364 drilled into the peak ring of the Chicxulub impact crater. We present P-wave velocity, density, and porosity measurements from Hole M0077A that reveal unusual physical properties of the peak-ring rocks. Across the boundary between post-impact sedimentary rock and suevite (impact melt-bearing breccia) we measure a sharp decrease in velocity and density, and an increase in porosity. Velocity, density, and porosity values for the suevite are 2900–3700 m/s, 2.06–2.37 g/cm3, and 20–35%, respectively. The thin (25 m) impact melt rock unit below the suevite has velocity measurements…

Tensor tomography in periodic slabs

2018

Abstract The X-ray transform on the periodic slab [ 0 , 1 ] × T n , n ≥ 0 , has a non-trivial kernel due to the symmetry of the manifold and presence of trapped geodesics. For tensor fields gauge freedom increases the kernel further, and the X-ray transform is not solenoidally injective unless n = 0 . We characterize the kernel of the geodesic X-ray transform for L 2 -regular m -tensors for any m ≥ 0 . The characterization extends to more general manifolds, twisted slabs, including the Mobius strip as the simplest example.

Representaciones escolares del Clima en el Paisaje fluvial del río Clariano

2020

Resumen:El conocimiento de la relación entre el clima y el paisaje convive con las dificultades propias del ámbito escolar. Para saber qué ocurre en su enseñanza, se analiza por medio del instrumento Evocation 2005 y los registros pictóricos, las representaciones sociales que tiene una parte del alumnado de 1º ESO. El estudio de caso sobre un paisaje fluvial en un ámbito local confirma la idealización del paisaje y la escasa presencia del clima en las representaciones del alumnado, esto junto con las dificultades de los docentes en su conocimiento disciplinar y su práctica nos conmina a quebrar las tradiciones y rutinas escolares para afrontar mejor las explicaciones de las transformaciones…

Ecological risks of an old wood impregnation mill: application of the triad approach.

2010

Although many studies deal with the distribution and mobility of chromated copper arsenate (CCA) metals in soil, the ecotoxicity of CCA-contaminated soils is rarely studied. The Triad approach was applied to determine the ecological risks posed by a CCA mixture at a decommissioned wood impregnation mill in southern Finland. A combination of (1) chemical analyses; (2) toxicity tests with plants (aquatic: Lemna minor; terrestrial: Lactuca sativa), earthworms (Lumbricus rubellus), and enchytraeids (Enchytraeus albidus) conducted on contaminated soils, their aqueous extracts, and well water collected from the site; and (3) determination of the abundance of enchytraeids and nematodes and the bio…

Analyse toponymique de l’Horta de Valence (Espagne). Intégration des approches classique et critique pour la reconstruction et la valorisation de son…

2018

La comarca de l’Horta de València, la més poblada del País Valencià, rep aquest nom perquè fins a principis del segle XX la seua economia es basava en la seua riquíssima horta (‘terra de regadiu’). A partir de l’estudi dels topònims dels seus nuclis urbans (on l’horta ha estat eradicada) es reconstitueix virtualment el paisatge cultural hortícola perdut en les últimes dècades per a donar a conèixer a la ciutadania i així conscienciar-la del valor patrimonial d’aquest paisatge cultural de l’aigua desaparegut, i també per a revalorar el que sobreviu d’horta encara. Es porta a terme una anàlisi toponímica dels nuclis habitats de la comarca: d’una banda, seguint la metodologia clàssica de recol…

Inter-Relations among Motivation, Self-Perceived Use of Strategies and Academic Achievement in Science: A Study with Spanish Secondary School Students

2020

The relationship between motivation and the use of learning strategies is a focus of research in order to improve students&rsquo

Baltu filoloģija, 26 (2)

2018

European Initiatives in Postgraduate Education in Gerontology

2007

This paper describes three innovative European initiatives in postgraduate education in gerontology. The first is the European Masters Program in Gerontology (EuMaG), developed as an interdisciplinary joint program, supported and delivered by 22 European universities. Second, the Nordplus initiative to increase mobility of students and staff in the field of gerontology in the European Nordic countries is elaborated. Third, two postgraduate Gerontology and Geriatrics programs offered by the European Centre of Gerontology and Geriatrics, University of Malta are presented. In 1995, the Centre was designated a WHO Collaborating Centre for healthy aging. To provide a context for these initiative…

Assessing competence: The European survey on aging protocol (ESAP)

2003

<i>Objectives:</i> The main goal of this research project was to translate and adapt the European Survey on Ageing Protocol (ESAP) to 7 European countries/cultures. This article presents preliminary results from the ESAP, the basic assessment instrument of EXCELSA (European Longitudinal Study of Aging). <i>Methods:</i> 672 individuals aged 30–85, selected through quota sampling (by age, gender, education and living conditions), participated in this study, with 96 subjects from each of the 7 European countries. The basic research protocol for assessing competence and its determinants was designed to be administered in a 90-min in-home face-to-face interview. It contai…

Early life conditions and later life inequality in health

2013

Abstract Prenatal exposure to adverse conditions is known to affect health throughout the life span. It has also been shown that health is unevenly distributed at advanced ages. This chapter investigates whether health inequalities at old age may be partially caused by prenatal circumstances. We use a sample of people aged 71–91 from eight European countries and assess how shocks in GDP that occurred while the respondents were still in utero affect four important dimensions of later-life health: cognition, depression, functional limitations, and grip strength. We find that early-life macro-economic circumstances do not affect health at advanced ages, nor do they affect inequalities in healt…