Search results for "Wood"

Proboscidea: a preliminary note

1990

Abstract Proboscidean remains collected during the 1983–1989 field seasons are described here. They are assigned to Deinotherium aff. levius (14 isolated teeth) and to Gomphotherium pasalarense (44 isolated teeth). No evidence was found for another subspecies described by Gaziry from Pasalar. The proboscidea are probably indicative of woodland conditions at Pasalar.

Short communication: Driftwood provides reliable chronological markers in Arctic coastal deposits

2021

Originating from the boreal forest and often transported over large distances, driftwood characterizes many Arctic coastlines. Here we present a combined assessment of radiocarbon (14C) and dendrochronological (ring width) age estimates of driftwood samples to constrain the progradation of two Holocene beach-ridge systems near the Lena Delta in the Siberian Arctic (Laptev Sea). Our data show that the 14C ages obtained on syndepositional driftwood from beach deposits yield surprisingly coherent chronologies for the coastal evolution of the field sites. The dendrochronological analysis of wood from modern drift lines revealed the origin and recent delivery of the wood from the Lena River catc…

Different Sorption Behaviors for Wine Polyphenols in Contact with Oak Wood

2007

The evolution of polyphenols of enological interest- monomeric anthocyanins, (+)-catechin, (-)-epicatechin, gallic acid, and trans-resveratrol-in the presence of oak wood was investigated in aging-model conditions. Disappearance kinetics showed that, except for gallic acid, all of the wine polyphenols tend to disappear from the model wine in presence of oak wood, to reach an equilibrium after 20 days of contact. At equilibrium, the higher disappearance rates were obtained for monomeric anthocyanins and trans-resveratrol with values of 20 and 50%, respectively. For monomeric anthocyanins, the rate of disappearance seemed to be independent of their nature. In order to evaluate the contributio…

Time-resolved X-ray microtomographic measurement of water transport in wood-fibre reinforced composite material

2016

Natural fibre composites are prone to absorb moisture from the environment which may lead to dimensional changes, mold growth, degradation of mechanical properties or other adverse effects. In this work we develop a method for direct non-intrusive measurement of local moisture content inside a material sample. The method is based on X-ray microtomography, digital image correlation and image analysis. As a first application of the method we study axial transport of water in a cylindrical polylactic acid/birch pulp composite material sample with one end exposed to water. Based on the results, the method seems to give plausible estimates of water content profiles inside the cylindrical sample.…

Community composition of soil microarthropods of acid forest soils as affected by wood ash application

2002

Summary The responses of soil microarthropod communities of acid forest soils to wood ash-application was studied both in a sixty years old pine forest stand (wood ash dose: 3000kg ha —1 ) and in laboratory microcosms (wood ash dose: 5000kg ha —1 ). We also tested whether microarthropod communities stressed with wood ash were more sensitive to an additional disturbance, drought, than the microarthropod communities in the ash-free soil. Microarthropods were sampled five times during the field experiment and four times during the laboratory experiment. At each sampling the abundance and community structure of microarthropods were analysed. In the field the number of collembolans, and in the l…

Una mostra sui disegni di architettura siciliani del XVII e del XVIII secolo

2010

La mostra - e il relativo catalogo - dal titolo "Ecclesia Triumphans. Architetture del Barocco siciliano attraverso i disegni di progetto XVII-XVIII secolo" (Caltanissetta, 2009) a cura di M.R. Nobile, S. Rizzo, D. Sutera, si pone come momento di confluenza di due diversi percorsi di ricerca intrapresi da anni da Marco Nobile e dal suo gruppo di ricerca: lo studio dell'architettura chiesastica siciliana d'età moderna, con particolare riferimento al dibattito sulle chiesa madri tra XVII e XVIII secolo, e la perlustrazione sistematica delle testimonianze progettuali superstiti, conservate nei diversi archivi, collezioni proivate ed enti pubblici. La mostra di Caltanissetta ha infatti raccolto…

Old World Megadroughts and Pluvials During the Common Era

2015

An atlas of megadroughts in Europe and in the Mediterranean Basin during the Common Era provides insights into climate variability.

Under Our Eye: Margaret Atwood's Variation on the Panopticon in "The Heart Goes Last"

2020

In her dystopian dark comedy The Heart Goes Last (2015), Margaret Atwood openly refers to Jeremy Bentham’s concept of the Panopticon. The future world depicted in her novel is filled with violence and deprived of both human bonds and hope. Hence, being contained, monitored and — after Foucault — disciplined and punished appears to be the characters’ last resort. Surveillance tempts both sexes as it is politically correct and universal, and it does not privilege one group of people over the other. The article discusses the dystopian vision of the near future as created by Atwood in her 2015 novel, with direct references to the conception of the Panopticon, both in its original meaning propos…

Ecotoxicological status of a watercourse recovering from heavy loading by pulp and paper industry

2013

Adozione

2012

Il saggio ripercorre il cinema di Clint Eastwood attraverso il tema dell'adozione, che funge da filo rosso dell'intero percorso interpretativo