44 research outputs found
Effect of Asbestos Consumption on Malignant Pleural Mesothelioma in Italy: Forecasts of Mortality up to 2040.
Statistical models used to forecast malignant pleural mesothelioma (MPM) trends often do not take into account historical asbestos consumption, possibly resulting in less accurate predictions of the future MPM death toll. We used the distributed lag non-linear model (DLNM) approach to predict future MPM cases in Italy until 2040, based on past asbestos consumption figures. Analyses were conducted using data on male MPM deaths (1970-2014) and annual asbestos consumption using data on domestic production, importation, and exportation. According to our model, the peak of MPM deaths is expected to occur in 2021 (1122 expected cases), with a subsequent decrease in mortality (344 MPM deaths in 2039). The exposure-response curve shows that relative risk (RR) of MPM increased almost linearly for lower levels of exposure but flattened at higher levels. The lag-specific RR grew until 30 years since exposure and decreased thereafter, suggesting that the most relevant contributions to the risk come from exposures which occurred 20-40 years before death. Our results show that the Italian MPM epidemic is approaching its peak and underline that the association between temporal trends of MPM and time since exposure to asbestos is not monotonic, suggesting a lesser role of remote exposures in the development of MPM than previously assumed
A MST algorithm for source detection in gamma-ray images
We developed a source detection algorithm based on the Minimal Spanning Tree
(MST), that is a graph-theoretical method useful for finding clusters in a
given set of points. This algorithm is applied to gamma-ray bidimensional
images where the points correspond to the arrival direction of photons, and the
possible sources are associated with the regions where they clusterize. Some
filters to select these clusters and to reduce the spurious detections are
introduced. An empirical study of the statistical properties of MST on random
fields is carried in order to derive some criteria to estimate the best filter
values. We introduce also two parameters useful to verify the goodness of
candidate sources. To show how the MST algorithm works in the practice, we
present an application to an EGRET observation of the Virgo field, at high
galactic latitude and with a low and rather uniform background, in which
several sources are detected.Comment: 10 pages, 7 figures. Accepted for publication in MNRA
All-sky Medium Energy Gamma-ray Observatory: Exploring the Extreme Multimessenger Universe
The All-sky Medium Energy Gamma-ray Observatory (AMEGO) is a probe class
mission concept that will provide essential contributions to multimessenger
astrophysics in the late 2020s and beyond. AMEGO combines high sensitivity in
the 200 keV to 10 GeV energy range with a wide field of view, good spectral
resolution, and polarization sensitivity. Therefore, AMEGO is key in the study
of multimessenger astrophysical objects that have unique signatures in the
gamma-ray regime, such as neutron star mergers, supernovae, and flaring active
galactic nuclei. The order-of-magnitude improvement compared to previous MeV
missions also enables discoveries of a wide range of phenomena whose energy
output peaks in the relatively unexplored medium-energy gamma-ray band
Commentary: A road map for future data-driven urban planning and environmental health research.
Recent advances in data science and urban environmental health research utilise large-scale databases (100s-1000s of cities) to explore the complex interplay of urban characteristics such as city form and size, climate, mobility, exposure, and environmental health impacts. Cities are still hotspots of air pollution and noise, suffer urban heat island effects and lack of green space, which leads to disease and mortality burdens preventable with better knowledge. Better understanding through harmonising and analysing data in large numbers of cities is essential to identifying the most effective means of disease prevention and understanding context dependencies important for policy
Supplement: "Localization and broadband follow-up of the gravitational-wave transient GW150914" (2016, ApJL, 826, L13)
This Supplement provides supporting material for Abbott et al. (2016a). We briefly summarize past electromagnetic (EM) follow-up efforts as well as the organization and policy of the current EM follow-up program. We compare the four probability sky maps produced for the gravitational-wave transient GW150914, and provide additional details of the EM follow-up observations that were performed in the different bands
Long-term follow-up of newborns at neurological risk
Abstract Background In order to give a new contribution to the knowledge of the psycho-physical, behavioral and socio-relational development of the individuals who were born at neurological risk, we have carried out a research work through a retrospective and observational analysis in such people, followed in their neuro-evolutionary development from the Department of Pediatrics and Neonatology of the Hospital of Jesi. The purpose of this work is to value the quality of life of the individuals born at neurological risk at a distance of time from the birth. In the literature only recently there are studies on the quality of life of some categories of people, but survey does not seem to be performed in individuals previously born at neurological risk. Methods A statistical descriptive and inferential survey has been carried out on 812 individuals who were born at neurological risk, 442 preterm newborns and 370 term newborns, followed from 1977 until to 2007. They were classed in order to their age at the time of our observation. We have submitted the entire sample to a Questionnaire to investigate some areas of their life, ranging from their clinical and psycho-social history to their personal coming of life. Then the same persons, subdivided according to the various age groups, were subjected to other Questionnaires on the quality of life, internationally used. Results Neurological outcomes were found in 14.7% of the preterm newborns and in 6% of the term newborns, with a significant correlation between neurological outcomes and gestational age, low birth-weight, hypoxic-ischemic encephalopathy and low APGAR-index. Neuro-disabilities were found prevalently belong to the small for gestational age preterm newborns. A low quality of life emerged in those who had neurological outcomes. Conclusions Our study on the individuals who were born at neurological risk, analyzed at a distance, shows that a good health is associated with a good quality of life, while a low quality of life occurs to those who had neurological outcome, especially in the physical, cognitive, emotional and socio-relational aspects. As far as the few neurological outcomes which we have found in this survey, we think that they are due, other than to the natural factors, also to the high quality of the obstetric and neonatal care, to the early habilitation physiotherapy and to the important collaboration with the family
Kinetics and enantioselectivity of lipase-catalyzed reactions in SCCO2
The use of enzymes acting as catalysts in nonaqueous media has been frequently described in the scientific literature. As a matter of fact many organic media exhibit advantages as stabilization of enzyme, dissolution of hydrophobic compounds and the possibility of shifting thermodinamic equilibrium towards the synthesis of esters and amides. Very recently attention has also been devoted to the utilization of different fluids in supercritical conditions. Supercritical fluids exhibit properites similar to organic solvents with additional capacities of enhancing transport phenomena and facilitating post reactional separation which makes them more attractive. The present communication reports the results and some general observations on parameters which enhance the reactivity and the enantiomeric eccess in lipase catalysed reactions in supercritical CO2. We examined the lipase catalysed synthesis of some esters from secondary alcohols and acetic anhydride, as a function of pressure, temperature, substrates concentration, and we compared the performance of the enzyme with the corresponding reactins in aliphatic and aromatic solvents