A new CO carbonaceous chondrite from Acfer, Algeria

Many small fragments, totally weighing 118 g were found in the Acfer area by an Italian dealer. Chondrules size and types (predominance of granular olivine type), occurrence of twinned clinoenstatite and absence of plagioclase suggested a classification as CO carbonaceous chondrite

A new CK carbonaceous chondrite from Hammada Al Hamra, Libya

A single stone weighing 198 g was found in 2001 in the Hammada al Hamra region of Libya. Petrographic features (mean chondrules dimensions, coarse grained matrix and presence of AOIs and CAIs) point to a classification as CK carbonaceous chondrite

Textural and minerochemical features of NWA 1807 and 2180, two new CV3 chondrites from northwest Africa

A textural and minerochemical study has been performed on NWA 1807 and 2180 chondrites in order to determine sizes and typologies of chondrules, relative abundances of mineral phases, compositions of main phases and bulk oxygen isotope composition

Trattato di Lisbona e nuove competenze penali dell'Unione Europea

L'attivit\ue0 di ricerca, svolta nell'ambito del programma dell'Assegno di ricerca conferito dal Dipartimento di Scienze Giuridiche dell'Universit\ue0 degli Studi di Verona, ha avuto ad oggetto l'impatto del Trattato di Lisbona sulla produzione normativa dell'Unione Europea in materia penale ed in specie sulla definizione dei reati e la fissazione delle sanzioni nei settori della criminalit\ue0 informatica, dello sfruttamento e abuso sessuale di minori e della tratta degli esseri umani. L'assegnista ha analizzato in particolare le diverse forme di anticipazione della tutela penale, adottate dal legislatore nazionale ed europeo per contrastare la criminalit\ue0 transnazionale e quella legata alle nuove tecnologie della comunicazione e dell\u2019informazione (computer crime e cybercrime).Nell'ambito della ricerca sono state analizzate, partendo dalle acquisizioni dei precedenti lavori e progetti svolti, le principali fonti normative sovranazionali e nazionali (in specie italiane, spagnole e tedesche), che prevedono nuove forme di anticipazione della punibilit\ue0 in specie nell\u2019ambito della criminalit\ue0 informatica (ad es. accessi abusivi a sistemi informatici, possesso di \u201chacking tools\u201d, diffusione di programmi malware, ecc.) e della lotta all'abuso ed allo sfruttamento sessuale dei minori che si realizzano mediante l\u2019uso delle nuove tecnologie (ad es. sexting, online child-grooming, accesso e possesso di pedopornografia in Internet).Nell'ambito della ricerca sono state analizzate, partendo dalle acquisizioni dei precedenti lavori e progetti svolti, le principali fonti normative sovranazionali e nazionali (in specie italiane, spagnole e tedesche), che prevedono nuove forme di anticipazione della punibilit\ue0 in specie nell\u2019ambito della criminalit\ue0 informatica (ad es. accessi abusivi a sistemi informatici, possesso di \u201chacking tools\u201d, diffusione di programmi malware, ecc.) e della lotta all'abuso ed allo sfruttamento sessuale dei minori che si realizzano mediante l\u2019uso delle nuove tecnologie (ad es. sexting, online child-grooming, accesso e possesso di pedopornografia in Internet).European Criminal Law and the Treaty of Lisbon

Contamination due to memory effects in filtered vacuum arc plasma deposition systems

Thin film synthesis by filtered vacuum arc plasma deposition is a widely used technique with a number of important emerging technological applications. A characteristic feature of the method is that during the deposition process not only is the substrate coated by the plasma, but the plasma gun itself and the magnetic field coil and/or vacuum vessel section constituting the macroparticle filter are also coated to some extent. If then the plasma gun cathode is changed to a new element, there can be a contamination of the subsequent film deposition by sputtering from various parts of the system of the previous coating species. We have experimentally explored this effect and compared our results with theoretical estimates of sputtering from the SRIM (Stopping and Range of Ions in Matter) code. We find film contamination of order 10-4 - 10-3, and the memory of the prior history of the deposition hardware can be relatively long-lasting

The energy distribution of the first supernovae

The nature of the first Pop III stars is still a mystery and the energy distribution of the first supernovae is completely unexplored. For the first time we account simultaneously for the unknown initial mass function (IMF), stellar mixing, and energy distribution function (EDF) of Pop III stars in the context of a cosmological model for the formation of a MW-analogue. Our data-calibrated semi-analytic model is based on a N-body simulation and follows the formation and evolution of both Pop III and Pop II/I stars in their proper timescales. We discover degeneracies between the adopted Pop III unknowns, in the predicted metallicity and carbonicity distribution functions and the fraction of C-enhanced stars. Nonetheless, we are able to provide the first available constraints on the EDF, $dN/dE_\star \propto E_{\star}^{-\alpha_e}$ with $1\leq \alpha_e \leq2.5$. In addition, the characteristic mass of the Pop III IMF should be $m_{\rm ch}<100\:{\rm M_\odot}$, assuming a mass range consistent with hydrodynamical simulations (0.1-1000$\:{\rm M_\odot}$). Independent of the assumed Pop III properties, we find that all [C/Fe]>+0.7 stars (with [Fe/H]20\%$level, and all [C/Fe]>+2 stars at a$>95\%$level. All very metal-poor stars with$\rm [C/Fe]<0$ are predicted to be predominantly enriched by Pop III hypernovae and/or pair instabillity supernovae. To better constrain the primordial EDF, it is absolutely crucial to have a complete and accurate determination of the metallicity distribution function, and the properties of C-enhanced metal-poor stars (frequency and [C/Fe]) in the Galactic halo.Comment: 22 pages, 13 figure

A 10-year retrospective review of Salmonella infections at the Children\u27s Hospital in London, Ontario

OBJECTIVES: To describe Salmonella infections in children presenting to the Children\u27s Hospital (London Health Sciences Centre, London, Ontario), to assess risk factors for infection and to examine whether younger children, particularly infants younger than 12 weeks of age, experience higher morbidity than older children. METHODS: A 10-year retrospective review of children with Salmonella infections at the Children\u27s Hospital was conducted. Patient demographics, risk factors for infection, clinical characteristics, bacteriology and outcome were collected from the hospital charts and laboratory records. Data were separated into groups based on age and recent use of antibiotics to analyze differences in outcomes. RESULTS: Sixty-six children with Salmonella infections presented to the Children\u27s Hospital over a 10-year period. Common risk factors for Salmonella infection included having sick contacts, living in a rural area, recent travel, contact with pets (especially reptiles) and exposure to local water. Younger age was associated with an increased likelihood of admission to hospital, treatment with antibiotics and a longer course of antibiotic therapy. This was true when comparing older infants with those younger than 12 weeks of age. Patients recently treated with antibiotics and those with significant underlying medical conditions were more likely to be admitted. CONCLUSIONS: A wider knowledge of the epidemiological risk factors for Salmonella infection may improve diagnosis. Higher admission rates were expected in children younger than 12 weeks of age, those recently treated with antibiotics and those who had a significant underlying medical condition. A prospective, multicentre study is needed to further address questions regarding increased illness severity and appropriate management of Salmonella infections in children younger than 12 weeks of age. ©2010 Pulsus Group Inc. All rights reserved

A methodology for analysing temporal changes of forest surface using aerial photos for the application of Kyoto protocol: a study case in Northern Italy

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