267 research outputs found
Environmental performances in green labels for hotels – a critical review
The global attention towards climate change has led national governments and the international community to the definition of plans aiming to reduce greenhouse gas emissions in all economic sectors. Recently, attention has focused also on the tourism sector, and especially on the lodging industry, which consumes high amounts of resources and energy to satisfy guests expectations in terms of offered services and comfort conditions. In this sector, eco-certifications or green labels are spreading, perceived as useful marketing tools to communicate the hoteliers’ environmental efforts to consumers, who are becoming more and more sensitive to ecological matters. However, the wide offer of green labels and the lack of appropriate information are contributing to increase costumers’ confusion and perception of real “green”. The present paper focuses its attention on a set of currently available tools to evaluate the environmental performances of hotels, in order to enquire if and to which extent they are able to inform about the sustainability of accommodation structures. Starting from the wide number of certification schemes available on the market, 19 multi-attribute, third-party green labels were compared, aiming to explore the role that energy efficiency measures play in the certification procedure
A new FSA approach for in situ -ray spectroscopy
An increasing demand of environmental radioactivity monitoring comes both
from the scientific community and from the society. This requires accurate,
reliable and fast response preferably from portable radiation detectors. Thanks
to recent improvements in the technology, -spectroscopy with sodium
iodide scintillators has been proved to be an excellent tool for in-situ
measurements for the identification and quantitative determination of
-ray emitting radioisotopes, reducing time and costs. Both for
geological and civil purposes not only K, U, and Th have
to be measured, but there is also a growing interest to determine the
abundances of anthropic elements, like Cs and I, which are used
to monitor the effect of nuclear accidents or other human activities.
The Full Spectrum Analysis (FSA) approach has been chosen to analyze the
-spectra. The Non Negative Least Square (NNLS) and the energy
calibration adjustment have been implemented in this method for the first time
in order to correct the intrinsic problem related with the
minimization which could lead to artifacts and non physical results in the
analysis.
A new calibration procedure has been developed for the FSA method by using in
situ -spectra instead of calibration pad spectra. Finally, the new
method has been validated by acquiring -spectra with a 10.16 cm x 10.16
cm sodium iodide detector in 80 different sites in the Ombrone basin, in
Tuscany. The results from the FSA method have been compared with the laboratory
measurements by using HPGe detectors on soil samples collected in the different
sites, showing a satisfactory agreement between them. In particular, the
Cs isotopes has been implemented in the analysis since it has been
found not negligible during the in-situ measurements.Comment: accepted by Science of Total Environment: 8 pages, 10 figures, 3
table
Cleavage of the C-C bond in the ethanol oxidation reaction on platinum. Insight from experiments and calculations
"This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of Physical Chemistry C, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/abs/10.1021/acs.jpcc.6b03117, see http://pubs.acs.org/page/policy/articlesonrequest/index.html".[EN] Using a combination of experimental and computational methods, mainly FTIR and DFT calculations, new insights are provided here in order to better understand the cleavage of the C–C bond taking place during the complete oxidation of ethanol on platinum stepped surfaces. First, new experimental results pointing out that platinum stepped surfaces having (111) terraces promote the C–C bond breaking are presented. Second, it is computationally shown that the special adsorption properties of the atoms in the step are able to promote the C–C scission, provided that no other adsorbed species are present on the step, which is in agreement with the experimental results. In comparison with the (111) terrace, the cleavage of the C–C bond on the step has a significantly lower activation energy, which would provide an explanation for the observed experimental results. Finally, reactivity differences under acidic and alkaline conditions are discussed using the new experimental and theoretical evidence.This work has been financially supported by the MINECO (Spain) (project CTQ2013-44083-P) and Generalitat Valenciana (project PROMETEOII/2014/013).Ferre Vilaplana, A.; Buso-Rogero, C.; Feliu, JM.; Herrero, E. (2016). Cleavage of the C-C bond in the ethanol oxidation reaction on platinum. Insight from experiments and calculations. Journal of Physical Chemistry C. 120(21):11590-11597. https://doi.org/10.1021/acs.jpcc.6b03117S11590115971202
Resistência extrema a duas estirpes do Potato virus Y (PVY) de batata transgênica, cv. Achat, expressando o gene da capa protéica do PVYO
The coat protein (CP) gene of the potato virus Y strain “o” (PVYO) was introduced into potato, cultivar Achat, via Agrobacterium tumefaciens-mediated transformation. Sixty three putative transgenic lines were challenged against the Brazilian strains PVY-OBR and PVY-NBR. An extremely resistant phenotype, against the two strains, was observed in one line, denominated 1P. No symptoms or positive ELISA results were observed in 16 challenged plants from this line. Another clone, named as 63P, showed a lower level of resistance. Southern blot analysis showed five copies of the CP gene in the extremely resistant line and at least three copies in the other resistant line. The stability of the integrated transgenes in the extreme resistant line was examined during several in vitro multiplications over a period of three years, with no modification in the Southern pattern was observed. The stability of the transgenes, the absence of primary infections and the relatively broad spectrum of resistance suggest that the extremely resistant line obtained in this work can be useful for agricultural purposes.O gene da capa protĂ©ica (CP) do Potato virus Y estirpe “o”, foi introduzido em batata cultivar Achat, via Agrobacterium tumefaciens. Sessenta e trĂŞs linhas possivelmente transgĂŞnicas foram desafiadas com as estirpes brasileiras PVY-OBR e PVY-NBR. Uma linha apresentou extrema resistĂŞncia Ă s duas estirpes inoculadas, e foi denominado clone 1P. NĂŁo foram observados sintomas sistĂŞmicos de infecção e as plantas foram negativas em Elisa. Outra linha, denominada clone 63P, mostrou algum nĂvel de resistĂŞncia. Análises por Southern blot indicaram a presença de pelo menos cinco cĂłpias do gen CP no clone 1P e pelo menos trĂŞs cĂłpias no clone 63P. A estabilidade do gene introduzido no clone 1P foi avaliada durante trĂŞs anos, apĂłs várias multiplicações in vitro. NĂŁo foram observadas mudanças no padrĂŁo do Southern blot. A estabilidade do transgene, na ausĂŞncia de infecções primárias e relativo largo espectro de resistĂŞncia sugerem que o clone 1P pode ser utilizado para fins comerciais.Fil: Romano, Eduardo. Embrapa Recursos GenĂ©ticos; BrasilFil: Ferreira, Adriana T.. Embrapa Hortaliças; BrasilFil: Dusi, AndrĂ© N.. Embrapa Hortaliças; BrasilFil: Proite, Karina. Embrapa Recursos GenĂ©ticos; BrasilFil: Buso, Jose A.. Embrapa Hortaliças; BrasilFil: Avila, Antonio C.. Embrapa Hortaliças; BrasilFil: Nishijima, Marta L.. Embrapa Hortaliças; BrasilFil: Nascimento, Adriana S.. Embrapa Hortaliças; BrasilFil: Bravo Almonacid, Fernando Felix. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Instituto de Investigaciones en IngenierĂa GenĂ©tica y BiologĂa Molecular "Dr. HĂ©ctor N. Torres"; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; ArgentinaFil: Mentaberry, Alejandro Nestor. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Instituto de Investigaciones en IngenierĂa GenĂ©tica y BiologĂa Molecular "Dr. HĂ©ctor N. Torres"; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; ArgentinaFil: Monte, Damares. Embrapa Recursos GenĂ©ticos; BrasilFil: Campos, Magnolia A.. Embrapa Recursos GenĂ©ticos; BrasilFil: Melo, Paulo Eduardo. Embrapa Hortaliças; BrasilFil: Cattony, Monica K.. No especifica;Fil: Torres, Antonio C.. Embrapa Hortaliças; Brasi
Viral reinfection affecting bulb production in garlic after seven years of cultivation under field conditions.
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Viral reinfection affecting bulb production in garlic after seven years of cultivation under field conditions.
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Glossario de biotecnologia.
bitstream/item/107345/1/CNPH-DOCUMENTOS-19-GLOSSARIO-DE-BIOTECNOLOGIA-FL-07829.pd
Preliminary results for the characterization of the radiological levels of rocks in Tuscany Region.
The environmental background levels of natural
radiation due to the nuclides in rocks vary in significant
amounts that depend on the geological and geomorphological
features of a territory. The main source of terrestrial
gamma-ray radiation exposure to humans is from 238U,
232Th decay chains and 40K decay.
This paper reports a part of the results of the Research
Project “Measurement of natural radioactivity and
mapping of the radioisotope abundances of Tuscany
Region”, which started at August 2008 and it is supported
by founds of Tuscany Region. The aim of this project is to
realize the thematic maps of radioactivity content and in
particular of the abundances of eU1, eTh1 and 40K. These
goals will be achieved by integrating the information from
measurements on samples in laboratory with in-situ
investigations and airborne surveys. The Legnaro National
Laboratory (LNL) is the national leader for the design and
realization of high-resolution gamma-ray spectrometers,
portable and massive NaI(Tl) detectors.
The MCA_Rad gamma-ray spectrometry system was
designed and built up at LNL for measuring large amount
of samples with a minimum attendance: these features fit
perfectly with the requirements of this project. This system
is able to measure any type of materials (solid, liquid, gas),
and due to the high efficiency and its geometric symmetry,
absolute activity measurements are possible with systematic
errors below 5%. http://www.fe.infn.it/u/mantovani/CV/Proceedings/Bezzon_10b.pd
Análise de transferibilidade de primers microssatélites de Cucumis melo para Cucurbita moschata e Luffa cylindric.
bitstream/CENARGEN/29527/1/bp203.pd
Preliminary results for the characterization of the radiological levels of rocks in Tuscany Region
http://www.fe.infn.it/u/mantovani/CV/Proceedings/Bezzon_10a.pd
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