826 research outputs found
Astronomical Observations of Volatiles on Asteroids
We have long known that water and hydroxyl are important components in
meteorites and asteroids. However, in the time since the publication of
Asteroids III, evolution of astronomical instrumentation, laboratory
capabilities, and theoretical models have led to great advances in our
understanding of H2O/OH on small bodies, and spacecraft observations of the
Moon and Vesta have important implications for our interpretations of the
asteroidal population. We begin this chapter with the importance of water/OH in
asteroids, after which we will discuss their spectral features throughout the
visible and near-infrared. We continue with an overview of the findings in
meteorites and asteroids, closing with a discussion of future opportunities,
the results from which we can anticipate finding in Asteroids V. Because this
topic is of broad importance to asteroids, we also point to relevant in-depth
discussions elsewhere in this volume.Comment: Chapter to appear in the (University of Arizona Press) Space Science
Series Book: Asteroids I
UNICS - An Unified Instrument Control System for Small/Medium Sized Astronomical Observatories
Although the astronomy community is witnessing an era of large telescopes,
smaller and medium sized telescopes still maintain their utility being larger
in numbers. In order to obtain better scientific outputs it is necessary to
incorporate modern and advanced technologies to the back-end instruments and to
their interfaces with the telescopes through various control processes. However
often tight financial constraints on the smaller and medium size observatories
limit the scope and utility of these systems. Most of the time for every new
development on the telescope the back-end control systems are required to be
built from scratch leading to high costs and efforts. Therefore a simple, low
cost control system for small and medium size observatory needs to be developed
to minimize the cost and efforts while going for the expansion of the
observatory. Here we report on the development of a modern, multipurpose
instrument control system UNICS (Unified Instrument Control System) to
integrate the controls of various instruments and devices mounted on the
telescope. UNICS consists of an embedded hardware unit called Common Control
Unit (CCU) and Linux based data acquisition and User Interface. The Hardware of
the CCU is built around the Atmel make ATmega 128 micro-controller and is
designed with a back-plane, Master Slave architecture. The Graphical User
Interface (GUI) has been developed based on QT and the back end application
software is based on C/C++. UNICS provides feedback mechanisms which give the
operator a good visibility and a quick-look display of the status and modes of
instruments. UNICS is being used for regular science observations since March
2008 on 2m, f/10 IUCAA Telescope located at Girawali, Pune India.Comment: Submitted to PASP, 10 Pages, 5 figure
Leiomioma da Uretra Feminina - RevisĂŁo da Literatura a PropĂłsito de Caso ClĂnico
Oleiomioma da uretra Ă© uma patologia rara, estando descritos cerca de uma centena de
casos na literatura. SĂŁo tumores benignos, constituĂdos por mĂșsculo liso e surgem mais
frequentemente na idade fĂ©rtil.Otratamento Ă© cirĂșrgico com excisĂŁo da massa, existindo
contudo possibilidade de recidiva local.
Apresenta-seumcaso clĂnico de leiomioma da uretra e realizou-se revisĂŁo da literatura
Scapular dynamic muscular stiffness assessed through myotonometry: a narrative review
Several tools have been used to assess muscular stiffness. Myotonometry stands out as an accessible, handheld, and easy to use tool. The purpose of this review was to summarize the psychometric properties and methodological considerations of myotonometry and its applicability in assessing scapular muscles. Myotonometry seems to be a reliable method to assess several muscles stiffness, as trapezius. This method has been demonstrated fair to moderate correlation with passive stiffness measured by shear wave elastography for several muscles, as well as with level of muscle contraction, pinch and muscle strength, Action Research Arm Test score and muscle or subcutaneous thickness. Myotonometry can detect scapular muscles stiffness differences between pre- and post-intervention in painful conditions and, sometimes, between symptomatic and asymptomatic subjects.info:eu-repo/semantics/publishedVersio
The Stellar Content of Obscured Galactic Giant HII Regions V: G333.1--0.4
We present high angular resolution near--infrared images of the obscured
Galactic Giant HII (GHII) region G333.1--0.4 in which we detect an OB star
cluster. For G333.1--0.4, we find OB stars and other massive objects in very
early evolutionary stages, possibly still accreting. We obtained --band
spectra of three stars; two show O type photospheric features, while the third
has no photospheric features but does show CO 2.3 m band--head emission.
This object is at least as hot as an early B type star based on its intrinsic
luminosity and is surrounded by a circumstellar disc/envelope which produces
near infrared excess emission. A number of other relatively bright cluster
members also display excess emission in the --band, indicative of
disks/envelopes around young massive stars. Based upon the O star photometry
and spectroscopy, the distance to the cluster is 2.6 0.4 kpc, similar to
a recently derived kinematic (near side) value. The slope of the --band
luminosity function is similar to those found in other young clusters. The mass
function slope is more uncertain, and we find - for stars with M M where the upper an lower limits are
calculated independently for different assumptions regarding the excess
emission of the individual massive stars. The number of Lyman continuum photons
derived from the contribution of all massive stars in the cluster is 0.2
. The
integrated cluster mass is 1.0
.Comment: 31 pages, including 12 figures and 3 tables. Accepted for publication
in the A
Studies on Seed Colouring in Soybean and Tomato
The effects of seed colouring using 25 dyes (i.e. 20 chemical and 5 natural dyes) on the quality of soyabean (cv. JS 335) and tomato (cv. Pusa Ruby) seeds were studied in the laboratory. Data were recorded for seed germination percentage, root and shoot length, whole seedling length, dry weight of seedling, vigour index, speed of germination and electrical conductivity. Rhodamine-B, Fast green and Malachite green for soyabean and Rhodamine-B and Fast green for tomato were the best dyes for seed colouring
Infecção congĂȘnita pelo citomegalovĂrus: ocorrĂȘncia em duas populaçÔes de nĂvel sĂłcio-econĂŽmico diferentes em SĂŁo Paulo, Brasil
In SĂŁo Paulo, Brazil, between November 1980 and July 1982, 1614 newborns of middle socioeconomic background and 1156 newborns of low socioeconomic background were examined for the occurrence of congenital cytomegalovirus (CMV) infection by isolation of virus from urine samples or detection of specific anti-CMV IgM in umbilical cord serum tested by immunofluorescence. In the low socioeconomic population prevalence of CMV complement-fixing antibodies in mothers was 84.4%(151/179) and the incidence of congenital infection assessed by virus isolation 0.98% (5/508), as compared with 0.46% (3/648) in the group of newborns tested by detection of specific anti-CMV IgM in umbilical cord-serum. In middle socioeconomic level population prevalence of CMV complement-fixing antibodies in mothers was 66.5% (284/427) and the incidence of CMV congenital infection was 0.39% (2/518) in the group of newborns screened by virus isolation and 0.18% (2/1096) in the group tested by detection of specific anti-CMV IgM. In the present study none of the 12 congenitally infected newborns presented clinical apparent disease at birth.Entre novembro de 1980 e julho de 1982, 1614 recĂ©m-nascidos (RNs) de nivel sĂłcio-econĂŽmico mĂ©dio e 1156 RNs de baixo nĂvel sĂłcioeconĂŽmico foram examinados para verificar a ocorrĂȘncia de infecção congĂȘnita pelo citomegalovĂrus (CMV), atravĂ©s de isolamento do vĂrus em amostras de urina ou detecção de anticorpos IgM especĂficos em amostras de sangue de cordĂŁo umbilical. Na população de baixo nĂvel sĂłcio econĂŽmico a prevalĂȘncia de anticorpos fixadores do complemento (Ac Fc) anti-CMV nas mĂŁes foi de 84,4% (151/179) e a incidĂȘncia de infecção congĂȘnita determinada por isolamento do vĂrus foi de 0,90% (5/508). No grupo de RNs em que o diagnĂłstico baseou-se apenas na detecção de Ac IgM CMV-especĂficos no sangue de cordĂŁo a incidĂȘncia de infecção congĂȘnita foi de apenas 0,46% (3/648). Na população de nivel sĂłcio-econĂŽmico mĂ©dio a prevalĂȘncia de Ac Fc anti-CMV nas mĂŁes foi de 66,5% (284/427) e a incidĂȘncia de infecção congĂȘnita foi de 0,39% (2/518) no grupo de RNs testados por isolamento de vĂrus na urina e 0,18% (2/1090) no grupo testado por detecção de Ac IgM especĂficos. No presente estudo nenhum dos 12 RNs infectados congenitamente apresentou sinais ou sintomas de doença ao nascimento
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