Modeling the near-UV band of GK stars, Paper II: NLTE models

We present a grid of atmospheric models and synthetic spectral energy distributions (SEDs) for late-type dwarfs and giants of solar and 1/3 solar metallicity with many opacity sources computed in self-consistent Non-Local Thermodynamic Equilibrium (NLTE), and compare them to the LTE grid of Short & Hauschildt (2010) (Paper I). We describe, for the first time, how the NLTE treatment affects the thermal equilibrium of the atmospheric structure (T(tau) relation) and the SED as a finely sampled function of Teff, log g, and [A/H] among solar metallicity and mildly metal poor red giants. We compare the computed SEDs to the library of observed spectrophotometry described in Paper I across the entire visible band, and in the blue and red regions of the spectrum separately. We find that for the giants of both metallicities, the NLTE models yield best fit Teff values that are ~30 to 90 K lower than those provided by LTE models, while providing greater consistency between \log g values, and, for Arcturus, Teff values, fitted separately to the blue and red spectral regions. There is marginal evidence that NLTE models give more consistent best fit Teff values between the red and blue bands for earlier spectral classes among the solar metallicity GK giants than they do for the later classes, but no model fits the blue band spectrum well for any class. For the two dwarf spectral classes that we are able to study, the effect of NLTE on derived parameters is less significant.Comment: Submitted to The Astrophysical Journal. Observed spectrophotometric library, and grids of NLTE and LTE) synthetic spectra for GK stars available at http://www.ap.smu.ca/~ishort/PHOENI

An optical spectroscopic and polarimetric study of the microquasar binary system SS 433

We present a study of the mass transfer and wind outflows of SS433, focusing on the so-called stationary lines based on archival high and low resolution optical spectra, and new optical multifilter polarimetry and low resolution optical spectra spanning an interval of a decade and a broad range of precessional and orbital phases. We derive $\text{E(B-V)}=0.86\pm0.10$ and revised UV and U band polarizations and polarization angles that yield the same position angle as the optical. The polarization wavelength dependence is consistent with optical-dominating electron scattering with a Rayleigh component in U and the UV filters; no polarization changes were observed during a flare event. Using profile orbital and precessional modulation of multiple lines we derive properties for the accretion disk, present evidence for a strong disk wind, determine its velocity structure, and demonstrate its variability on timescales unrelated to the orbit. We derive a mass ratio $q=0.37\pm0.04$, and masses $\text{M}_X=4.2\pm0.4\ \text{M}_\odot$, $\text{M}_A=11.3\pm 0.6\ \text{M}_\odot$, and show that the A star fills its Roche surface. The O I 7772 \r{A} and 8446 \r{A} lines show different but related orbital modulation and no evidence for a circumbinary disk component. Instead, the spectral line profile variability can be understood with an ionization stratified outflow predicted by thermal wind modeling, which also accounts for an extended equatorial structure detected at long wavelength

Mutations in SLC29A3, Encoding an Equilibrative Nucleoside Transporter ENT3, Cause a Familial Histiocytosis Syndrome (Faisalabad Histiocytosis) and Familial Rosai-Dorfman Disease

The histiocytoses are a heterogeneous group of disorders characterised by an excessive number of histiocytes. In most cases the pathophysiology is unclear and treatment is nonspecific. Faisalabad histiocytosis (FHC) (MIM 602782) has been classed as an autosomal recessively inherited form of histiocytosis with similarities to Rosai-Dorfman disease (RDD) (also known as sinus histiocytosis with massive lymphadenopathy (SHML)). To elucidate the molecular basis of FHC, we performed autozygosity mapping studies in a large consanguineous family and identified a novel locus at chromosome 10q22.1. Mutation analysis of candidate genes within the target interval identified biallelic germline mutations in SLC29A3 in the FHC kindred and in two families reported to have familial RDD. Analysis of SLC29A3 expression during mouse embryogenesis revealed widespread expression by e14.5 with prominent expression in the central nervous system, eye, inner ear, and epithelial tissues including the gastrointestinal tract. SLC29A3 encodes an intracellular equilibrative nucleoside transporter (hENT3) with affinity for adenosine. Recently germline mutations in SLC29A3 were also described in two rare autosomal recessive disorders with overlapping phenotypes: (a) H syndrome (MIM 612391) that is characterised by cutaneous hyperpigmentation and hypertrichosis, hepatomegaly, heart anomalies, hearing loss, and hypogonadism; and (b) PHID (pigmented hypertrichosis with insulin-dependent diabetes mellitus) syndrome. Our findings suggest that a variety of clinical diagnoses (H and PHID syndromes, FHC, and familial RDD) can be included in a new diagnostic category of SLC29A3 spectrum disorder

Kai neteisinga informacija lemia politinius sprendimus dėl autizmo gydymo

Behavior analysts have an important role to play in the management of autism spectrum disorders (ASDs). While empirical support for interventions that are based on behavior analysis is extensive, this is not the case for many other kinds of interventions. This has resulted in significant differences in public policy and recommendations in different parts of the world, most notably between Europe and North America. In this paper, we outline some of the reasons for this disparity.Elgesio analizė yra svarbi, kalbant apie autizmo spektro sutrikimo intervencijas. Elgesio analize pagrįstos intervencijos turi didelį empirinį pagrindimą, tačiau apie daugelį kitų intervencijų rūšių to pasakyti negalima. Tai lėmė didelius politinių sprendimų ir rekomendacijų skirtumus skirtingose pasaulio dalyse, ypač tarp Europos ir Šiaurės Amerikos. Straipsnyje analizuojamos kai kurios šių skirtumų priežastys

SOCIAL ACTION GROUPWORK AS NEGOTIATION: CONTRADICTIONS IN THE PROCESS OF EMPOWERMENT

This paper is about the process and outcomes to date of a series of discussions between a social action mother and a social work lecturer in Belfast. The central theme of the paper is contradiction within practice committed to empowerment. It is an attempt to take our discussion and theorising further by bringing it to a wider audience. Our aim is to contribute to defining the nature of social action groupwork and to identify appropriate forms of support. Publisher’s note: We are now putting all back issues of Groupwork on line. Articles in this issue have been scanned to pdf files as viable original typesetting files no longer exist. Though they may not look it, these files are searchable. This issue was published nearly 30 years ago. We have stated author professional details as received at time of publication

Schematic showing the minimal candidate interval on chromosome 10q22.1, positions of candidate genes taken from the Ensembl genome browser (Build 49), genomic organization of <i>SLC29A3</i>, and positions of mutations found in the 3 histiocytosis syndrome families.

<p>Schematic showing the minimal candidate interval on chromosome 10q22.1, positions of candidate genes taken from the Ensembl genome browser (Build 49), genomic organization of <i>SLC29A3</i>, and positions of mutations found in the 3 histiocytosis syndrome families.</p