Search results for "WOOD"

The forest vegetation from the Garda lake

1998

A study about the forest vegetation occurring along the shores of the Garda lake is presented. The investigation emphasized a noteworthy vegetation diversity, related both to the habitat heterogenity and to the still present traces of several climatic changes that affected the area beginning from the Quaternary period. The examinated woodlands are the result of a compenetration between evergreen characteristic species of the Quercetea ilicis class, representing relicts of the climacic vegetation during the peak of the post-glacial anathermic phase, and deciduous mesothermophilous elements belonging to the Querco-Fagetea class order, which better reflect the present macroclimate. On the basi…

"Cinquant'anni sono un po' troppi per un bambino prodigio". Appunti per una lettura della "Città morta" di Erich Wolfgang Korngold

2009

Erich Wolfgang Korngold (1897-1957), bambino prodigio nel crepuscolo dell'Impero asburgico e genio in fuga dall'Europa nazista, ottiene il suo più grande successo teatrale con l'opera in tre quadri "Die tote Stadt" (La città morta, 1920). Il saggio traccia un breve profilo biografico dell'autore - anche in rapporto con le opere del periodo americano e con le musiche destinate al cinema di Hollywood - analizzando la genesi, la drammaturgia e i caratteri musicali della "Città morta".

The kinetics of defect aggregation: A novel lattice formalism

1995

We introduce a stochastic model for the A + B → O reaction on a discrete lattice. The system may include mono- and bimolecular steps (i. e. reaction and diffusion steps). The resulting infinite chain of equations is truncated at a certain level via a modified Kirkwood approximation.

Preliminary 1H NMR study on archaeological waterlogged wood.

2005

Magnetic Resonance Relaxation (MRR) and Magnetic Resonance Imaging (MRI) are powerful tools to obtain detailed information on the pore space structure that one is unlikely to obtain in other ways. These techniques are particularly suitable for Cultural Heritage materials, because they use water 1H nuclei as a probe. Interaction with water is one of the main causes of deterioration of materials. Porous structure in wood, for example, favours the penetration of water, which can carry polluting substances and promote mould growth. A particular case is waterlogged wood from underwater discoveries and moist sites; in fact, these finds are very fragile because of chemical, physical and biological…

Electromagnetic production of polarization in hypernuclei.

1991

The formation of polarized hypernuclei through kaon photoproduction is investigated in a distorted-wave impulse approximation approach. The polarization depends strongly on the model used to describe the elementary process. For one particular model and certain well populated states the amount of polarization may reach up to 50%. We present cross sections and polarizations for kaon photoproducton on $^{16}\mathrm{O}$, $^{28}\mathrm{Si}$, $^{56}\mathrm{Fe}$, and $^{89}\mathrm{Y}$ and demonstrate the sensitivity of polarization to distortion and nonlocal effects. More information on the elementary process is needed before the feasibility of such measurements can be established.

Macrofungi as ecosystem resources: Conservation versus exploitation

2013

Fungi are organisms of significant importance not only for the crucial roles they undertake in nature but also for many human activities that are strictly dependent on them. Indeed, fungi possess fundamental positions in ecosystems functioning including nutrient cycles and wood decomposition. As concerns human-related activities, edible and non-edible mushrooms are also involved and/or exploited in forestry, pharmaceutical industry and food production; hence, nowadays they represent a major economic source worldwide. In order to maintain and improve their strategic importance, several conservation strategies, such as habitat preservation, are needed. This article reports several contributio…

Characterization of softwood and hardwood lignoboost kraft lignins with emphasis on their antioxidant activity

2014

Fractionation of softwood and hardwood LignoBoost kraft lignins, using sequential extraction with organic solvents of increasing hydrogen-bonding ability (dichloromethane, n-propanol, and methanol), was carried out. Using SEC, analytical pyrolysis, FTIR and UV/VIS spectroscopy, and chemical analytical methods, four fractions were obtained and characterized in terms of their yield, composition, functionality, lignin structural features, and antioxidant properties. In tests with free radicals (ABTS●+, DPPH●, O2●-) and the ORAC (oxygen radical absorbance capacity) assay, the high radical scavenging capacity of the lignin’s soluble fractions was demonstrated. The antioxidant activity of the fra…

Olive wood as possible bioaccumulator of heavy metals: analytical method by ICP-MS. GC-MS analysis

2013

Forest management optimization across spatial scales to reconcile economic and conservation objectives

2019

Conflicts between biodiversity conservation and resource production can be mitigated by multi-objective management planning. Optimizing management for multiple objectives over larger land areas likely entails trading off the practicability of the process against the goodness of the solution. It is therefore worthwhile to resolve how large areas are required as management planning regions to reconcile conflicting objectives as effectively as possible. We aimed to reveal how the extent of forestry planning regions impacts the potential to mitigate a forestry-conservation conflict in Finland, represented as a trade-off between harvest income and deadwood availability. We used forecasted data f…

Scientific studies for the restoration of a wood painting of the Galleria Interdisciplinare Regionale della Sicilia—Palazzo Mirto di Palermo

2016

Abstract The Ritratto muliebre, referring to Venus, is a panel painting, oil on wood, attributed to unknown artist and probably dated to the second half of 16th century, today conserved in the Galleria Interdisciplinare Regionale della Sicilia—Palazzo Mirto of Palermo. The aim of this research was to assess the techniques used to decorate the wooden painting and to verify the state of conservation of the artwork's materials but also to identify the previous treatments. This study was the essential condition to plane and perform the correct restoration. For this reason, an integrated analytical approach based on the use of non-invasive and micro-invasive techniques was used, with the aim to …