513 research outputs found
Does major depressive disorder cause osteoporosis in a young man?
We recently reviewed the literature about major depressive
disorder (MDD) as an additional risk factor for osteoporosis (1,
2). Most of the studies examining the association between depression
and osteoporosis have been conducted in women
whereas the few existing studies on depression and osteoporosis
conducted in men have been limited to the elderly (3,
4). An association between depression and lower BMD has
been reported in elderly Asian men (4), however, the same
association was not observed in community-dwelling, elderly
Caucasian men (3). Very little is known about osteoporosis in
young men (5, 6). Results from the Third National Health and
Nutrition Examination Survey (NHANES III) show that major
depressive episode (MDE) is associated with 2% lower BMD
at the total proximal femoral level in multivariate models in
young men but not in women (5). The existence of a relationship
between depression and osteoporosis in young men remains
controversial
Contact X-ray microscopy of living cells by using LiF crystal as imaging detector
In this paper, the use of lithium fluoride (LiF) as imaging
radiation detector to analyse living cells by single-shot soft
X-ray contact microscopy is presented. High resolved X-ray
images on LiF of cyanobacterium Leptolyngbya VRUC135,
two unicellular microalgae of the genus Chlamydomonas
and mouse macrophage cells (line RAW 264.7) have been
obtained utilizingX-ray radiation in the water window energy
range from a laser plasma source. The used method is based on
loading of the samples, the cell suspension, in a special holder
where they are in close contactwith a LiF crystal solid-state Xray
imaging detector. After exposure and sample removal, the
images stored in LiF by the softX-ray contactmicroscopy technique
are read by an optical microscope in fluorescence mode.
The clear image of the mucilaginous sheath the structure
of the filamentous Leptolyngbya and the visible nucleolus in
the macrophage cells image, are noteworthiness results. The
peculiarities of the used X-ray radiation and of the LiF imaging
detector allow obtaining images in absorption contrast revealing
the internal structures of the investigated samples at high
spatial resolution. Moreover, thewidedynamicrangeof theLiF
imaging detector contributes to obtain high-quality images. In
particular, we demonstrate that this peculiar characteristic of
LiF detector allows enhancing the contrast and reveal details
even when they were obscured by a nonuniform stray light
La valorizzazione energetica dei rifiuti
La valorizzazione energetica dei rifiuti è un tema su cui recentemente si sono concentrate molteplici questioni rilevanti sul piano dell’applicazione e dell’interpretazione del diritto dell’ambiente. In particolare, con il presente lavoro di ricerca, dopo aver esaminato alcuni aspetti relativi all'emersione di una particolare disciplina in materia di rifiuti e quelli riguardanti la sua qualificazione giuridica, si vogliono approfondire le tematiche riguardanti il riuso a fini energetici. Dunque, l'attenzione sarà concentrata non solo sulla disciplina nazionale ed europea ma anche, ad esempio, sulle autorizzazioni per l'apertura di impianti di termovalorizzazione nonchè su alcune interessanti sentenze in materia
Il percorso ideale nella gestione del paziente con osteoporosi severa:dalla valutazione del rischio all'approccio multidisciplinare
Non disponibil
Disastri al margine. Crisi e opportunità della ricostruzione di Norcia e del suo territorio tra i terremoti del 1979 e del 2016
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World Academy of Science, Engineering and Technology Conference
Novel acrylated epoxidized hemp oil (AEHO) based bioresins were successfully synthesised, characterized and applied to biocomposites reinforced with woven jute fibre. Characterisation of the synthesised AEHO consisted of acid number titrations and FTIR spectroscopy to assess the success of the acrylation reaction. Three different matrices were produced (vinylester (VE), 50/50 blend of AEHO/VE and 100% AEHO) and reinforced with jute fibre to form three different types of biocomposite samples. Mechanical properties in the form of flexural and interlaminar shear strength (ILSS) were investigated and compared for the different samples. Results from the mechanical tests showed that AEHO and 50/50 based neat bioresins displayed lower flexural properties compared with the VE samples. However when applied to biocomposites and compared with VE based samples, AEHO biocomposites demonstrated comparable flexural performance and improved ILSS. These results are attributed to improved fibre-matrix interfacial adhesion due to surface-chemical compatibility between the natural fibres and bioresin
The Importance of Artworks 3D Digitalization at the Time of COVID Epidemy: Case Studies by the Use of a Multi-wavelengths Technique
At the moment when this article is written, a pandemic disease is attacking our lives, our style of living and our economy. The present work uses this occasion for focusing the attention on the importance to make available a digital copy of our knowledge, history and habits. The slower passing of time inside own residence let the individual to rediscover natural indoor activities, like reading a book or watching a documentary, and try to mentally escape by a virtual visit in a museum or a city. The first evidence coming out from these sites is mainly the limits of this technology for appreciating the artworks, even inside 3D environments, and, probably the most important, the lack of standardization in terms of accessibility and quality of the products. The present work focuses the attention only on one of the aspects of the processes for studying and documenting an artwork: the data acquisition and preprocessing data fusion. For approaching these steps, an out-of-the-market 3D technology based on the combination of several laser sources will be described: the description of this kind of systems is the pretext for analyzing the main differences with the available devices and techniques today largely used in Cultural Heritage environment, but especially for highlighting how the research can try to unify the gamification with diagnostic and restoration support in this sector
MULTI-WAVELENGTHS 3D LASER SCANNING FOR PIGMENT AND STRUCTURAL STUDIES ON THE FRESCOED CEILING <q>THE TRIUMPH OF DIVINE PROVIDENCE</q>
Abstract. The modern 3D digitalization techniques open new scenarios on how to transmit to the next generations the state of health of Cultural Heritage (CH) buildings, paintings, frescos or statues. The final goal of the 3D digitalization is an exact replica of the acquired target, but a standard and unique technique able to digitalize artworks of different size and in different ambient light conditions is still far from being successfully ready for the CH field. Even if both laser scanning and photogrammetry can be considered mature techniques, applied with success in most of the Cultural Heritage study cases, they are limited in terms of colour digitalization and image quality in all the cases where ambient light and big sensor-target distances are crucial factors: differently to standard laser scanners, which collect colour information by the use of a coaxial camera and the distance by an IR laser source, the RGB-ITR (Red, Green and Blue Imaging Topological Radar) scanner, developed in ENEA, is equipped with three different laser sources for the simultaneous colour and distance estimation. The present work shows the results obtained applying the above-mentioned multi-wavelengths laser scanner for collecting a complete high-quality 3D colour model of "The Triumph of Divine Providence" vault, painted by Pietro da Cortona on the ceiling of the noble hall inside Palazzo Barberini in Rome.</p
Analysis and preliminary tests of optical system for calibration of photomultiplier neutron detectors of ITER Radial Neutron Camera
La Radial Neutron Camera (RNC) di ITER (International Thermonuclear Experimental Reactor), insieme alla Vertical Neutron Camera, ha come obiettivo quello di fornire, attraverso tecniche di ricostruzione applicate ai flussi di neutroni integrati, la misura risolta nel tempo del profilo del flusso neutronico generato durante il processo di produzione del plasma fusionistico. Più esattamente, con l’RNC si vuole valutare l’emissività neutronica, ovvero i neutroni emessi per unità di tempo e di volume. L’RNC è composto da due sottosistemi: l’RNC In-Port e l’RNC Ex-Port situati, rispettivamente, all’interno e all’esterno del Plug della Porta Equatoriale #01. In questo rapporto si presentano e discutono gli studi effettuati e i risultati ottenuti per la progettazione della ITER RNC focalizzandosi su un sistema ottico per la calibrazione di rivelatori neutronici a fotomoltiplicatore. Questi saranno infatti installati nella parte Ex-Port per la misura risolta nel tempo del flusso neutronico. Tali attività sono state effettuate nell’ambito di un accordo di collaborazione tra i laboratori ENEA NUC-TECFISDIM e NUC-FUSEN-DIA sul tema: “Sviluppo di una diagnostica ottica per ITER Radial Neutron Camera” che rientra nell’ambito delle attività di F4E (Fusione for Energy) assegnate ad ENEA (grant SG07).ITER’s (International Thermonuclear Experimental Reactor) Radial Neutron Camera (RNC), together with the Vertical Neutron Camera, aims to provide, through reconstruction techniques applied to integrated neutron fluxes, the time-resolved measurement of neutron flux profile generated during the fusion plasma production process. Specifically, neutron emissivity should be measured by the RNC, i.e. the neutrons emitted per unit time and volume. The RNC consists of two subsystems, the RNC In-Port and the RNC Ex-Port, located inside and outside the Equatorial Gate Plug #01, respectively. This report presents and discusses the studies performed and results obtained for the design of the ITER RNC focusing on an optical system for the calibration of photomultiplier neutron detectors. The latter will be installed in the Ex-Port part for time-resolved measurement of neutron flux. These activities were carried out within the framework of a collaboration agreement between the ENEA NUCTECFIS-DIM and NUC-FUSEN-DIA laboratories on the topic: “Sviluppo di una diagnostica ottica per ITER Radial Neutron Camera” (“Development of an optical diagnostics for ITER Radial Neutron Camera”) which is part of the F4E (Fusion for Energy) activities assigned to ENEA (grant SG07)
Control de las enfermedades Mancha Negra (Alternaria b.) y bacteriosis (Pseudomonas) en el cultivo de brócoli en el Cinturón Hortícola de Mar del Plata
Durante el verano, en nuestra zona, el cultivo de brócoli se ve afectado frecuentemente por enfermedades fúngicas como alternaria y bacterianas como Pseudomonas. Para evaluar la eficiencia del control de ambas enfermedades se planteó el siguiente ensayo con cuatro aplicaciones de mezclas de funguicidas y bactericidas.EEA BalcarceFil: Adlercreutz, Enrique Gustavo. Instituto Nacional de Tecnología Agropecuaria. (INTA). Estación Experimental Agropecuaria Balcarce. Agencia de Extensión Rural Mar del Plata; Argentina.Fil: Francucci, Marcelo. Actividad Privada; Argentina
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