The skin, an organ with high accessibility, represents the site of significant changes, with high social and psychological impact on the patient's quality of life, by its evolution poten-tial, but ...mainly by its aesthetic prejudice generated by the persistent/permanent lesions. The most eligible criteria of classifying hyperpigmentation are etiological: genetic associat-ed with endocrinological pathologies, metabolic diseases, post-inflammatory or infections diseases, but also with physical/chemical agents, tumor and idiopathic pathology. Regard-less of the etiological agents involved, all hypermelanoses are the consequence of melanic pigment excess, histologically localized in the dermis/epidermis, most often manifested secondary to quantitative disorders (increase in melanin production) and occasionally to qualitative disorders (increase in melanocytes activity). Often asymptomatic and chronic, cutaneous hyperpigmentation represents a real issue for the patients, because of its emo-tional and psychological consequences.
We present a series of hundreds of collisionless simulations of galaxy group mergers. These simulations are designed to test whether the properties of elliptical galaxies - including the key ...fundamental plane scaling relation, morphology and kinematics - can be simultaneously reproduced by dry multiple mergers in galaxy groups. Preliminary results indicate that galaxy group mergers can produce elliptical remnants lying on a tilted fundamental plane, even without a central dissipational component from a starburst. This suggests that multiple mergers in groups are an alternate avenue for the formation of elliptical galaxies which could well dominate for luminous ellipticals.
Neurofibromatosis type 1 (Von Recklinghausen’s disease) represents a genodermatosis frequently met in dermatological practice, which is induced by the mutation of neurofibromina’s codifying gene. ...Owing to the wide and complex spectrum of mucocutaneous and systemic manifestations, this disease has a great impact on patients’ quality of life and is mostly embodied in alteration of psychosocial relationships, such as anxiety, depression, isolation or refusal to attend school or work. Besides cutaneous manifestations, the clinical presentation of Recklinghausen’s disease can include ocular, skeletal, cardiovascular or neuropsychiatric symptoms/signs and emphasizes the impairment of the quality of life.
The development of modern techniques permits an early prenatal diagnosis, and moreover, the interdisciplinary cooperation greatly improves the quality of life index.
The Large Synoptic Survey Telescope (LSST) is an ambitious astronomical survey with a similarly ambitious Data Management component. Data Management for LSST includes processing on both nightly and ...yearly cadences to generate transient alerts, deep catalogs of the static sky, and forced photometry light-curves for billions of objects at hundreds of epochs, spanning at least a decade. The algorithms running in these pipelines are individually sophisticated and interact in subtle ways. This paper provides an overview of those pipelines, focusing more on those interactions than the details of any individual algorithm.
Recent cosmological hydrodynamical simulations suggest that integral field spectroscopy can connect the high-order stellar kinematic moments h3 (~skewness) and h4 (~kurtosis) in galaxies to their ...cosmological assembly history. Here, we assess these results by measuring the stellar kinematics on a sample of 315 galaxies, without a morphological selection, using 2D integral field data from the SAMI Galaxy Survey. A proxy for the spin parameter (\(\lambda_{R_e}\)) and ellipticity (\(\epsilon_e\)) are used to separate fast and slow rotators; there exists a good correspondence to regular and non-regular rotators, respectively, as also seen in earlier studies. We confirm that regular rotators show a strong h3 versus \(V/\sigma\) anti-correlation, whereas quasi-regular and non-regular rotators show a more vertical relation in h3 and \(V/\sigma\). Motivated by recent cosmological simulations, we develop an alternative approach to kinematically classify galaxies from their individual h3 versus \(V/\sigma\) signatures. We identify five classes of high-order stellar kinematic signatures using Gaussian mixture models. Class 1 corresponds to slow rotators, whereas Classes 2-5 correspond to fast rotators. We find that galaxies with similar \(\lambda_{R_e}-\epsilon_e\) values can show distinctly different h3-\(V/\sigma\) signatures. Class 5 objects are previously unidentified fast rotators that show a weak h3 versus \(V/\sigma\) anti-correlation. These objects are predicted to be disk-less galaxies formed by gas-poor mergers. From morphological examination, however, there is evidence for large stellar disks. Instead, Class 5 objects are more likely disturbed galaxies, have counter-rotating bulges, or bars in edge-on galaxies. Finally, we interpret the strong anti-correlation in h3 versus \(V/\sigma\) as evidence for disks in most fast rotators, suggesting a dearth of gas-poor mergers among fast rotators.
Eugen Negrici’s book, The Systematics of Poetry, published in 1988, proposes an overarching interpretative pattern of poetry. His theory was often neglected as it illustrates a direction of criticism ...that is not very well represented in the Romanian literary history, that of the scientific objective criticism. Such a view and perspective might prove useful in analysing unresolved literary debates regarding the 80s generation, as well as certain phenomena of contemporary poetry, which seems to suffer from inconsistent critical verdicts and a confusing style.
We investigate the velocity vs. position phase space of z ~ 1 cluster galaxies using a set of 424 spectroscopic redshifts in 9 clusters drawn from the GCLASS survey. Dividing the galaxy population ...into three categories: quiescent, star-forming, and poststarburst, we find that these populations have distinct distributions in phase space. Most striking are the poststarburst galaxies, which are commonly found at small clustercentric radii with high clustercentric velocities, and appear to trace a coherent ``ring" in phase space. Using several zoom simulations of clusters we show that the coherent distribution of the poststarbursts can be reasonably well-reproduced using a simple quenching scenario. Specifically, the phase space is best reproduced if satellite quenching occurs on a rapid timescale (0.1 < tau_{Q} < 0.5 Gyr) after galaxies make their first passage of R ~ 0.5R_{200}, a process that takes a total time of ~ 1 Gyr after first infall. We compare this quenching timescale to the timescale implied by the stellar populations of the poststarburst galaxies and find that the poststarburst spectra are well-fit by a rapid quenching (tau_{Q} = 0.4^{+0.3}_{-0.4} Gyr) of a typical star-forming galaxy. The similarity between the quenching timescales derived from these independent indicators is a strong consistency check of the quenching model. Given that the model implies satellite quenching is rapid, and occurs well within R_{200}, this would suggest that ram-pressure stripping of either the hot or cold gas component of galaxies are the most plausible candidates for the physical mechanism. The high cold gas consumption rates at z ~ 1 make it difficult to determine if hot or cold gas stripping is dominant; however, measurements of the redshift evolution of the satellite quenching timescale and location may be capable of distinguishing between the two.
