9,476 research outputs found
US gravity utilization of tethers activity
The feasibility, requirements, and limitations of fluid transfer on a tethered system is evaluated. The study is conducted to simplify fluid transfer and to improve safety. The effects of gravity on these factors is also noted. Tether orbital refueling is used to settle fluid and to overcome the surface tension forces that are in space with the gravity level. It also allows a separation, when on the space station, from contamination and also from explosion hazards. Once the cryogenic propellant is settled the most important thing is the fluid slosh. Future plans of a gravity laboratory and a demonstration of gravity utilization using a TSS type of deployer are considered
The relation of body mass index, demographic and health-related variables to length of stay for patients at an acute rehabilitation hospital after total hip arthroplasty
Obesity is a growing public health concern world-wide. At the same time, knee and hip replacements are becoming an increasingly regular treatment for osteoarthritis. There are conflicting reports in the literature as to what extent body mass affects the length of stay (LOS) of patients undergoing total hip replacements. This chart review aims at examining the relationship between body mass index (BMI), demographic and health-related variables, and LOS. The retrospective chart review of one acute inpatient rehabilitation facility involved n = 119 patients. There was no significant association between LOS and body mass index (BMI), confirming earlier results. Insurance payer type (Medicare vs private) was statistically significant related to LOS. Moreover, there was a trend for the potential influence of race/ethnic patient background on LOS with Caucasians having shorter hospital stays. © 2010 Greenberg and Kroll, publisher and licensee Dove Medical Press Ltd. This is an Open Access article which permits unrestricted noncommercial use, provided the original work is properly cited.</p
Patient-reported outcome measures for chronic obstructive pulmonary disease: the exclusion of people with low literacy skills and learning disabilities
<p>Background: Patient-reported outcome measures (PROMs)
are intended to reflect outcomes relevant to patients. They are
increasingly used for healthcare quality improvement. To
produce valid measures, patients should be involved in the
development process but it is unclear whether this usually
includes people with low literacy skills or learning disabilities.
This potential exclusion raises concerns about whether these
groups will be able to use these measures and participate in
quality improvement practices.</p>
<p>Methods: Taking PROMs for chronic obstructive pulmonary disease (COPD) as an exemplar condition, our review
determined the inclusion of people with low literacy skills and
learning disabilities in research developing, validating, and
using 12 PROMs for COPD patients. The studies included in
our review were based on those identified in two existing
systematic reviews and our update of this search.
Results People with low literacy skills and/or learning
disabilities were excluded from the development of
PROMs in two ways: explicitly through the participant
eligibility criteria and, more commonly, implicitly through
recruitment or administration methods that would require
high-level reading and cognitive abilities. None of the
studies mentioned efforts to include people with low literacy skills or learning disabilities.</p>
<p>Conclusion: Our findings suggest that people with low
literacy skills or learning disabilities are left out of the
development of PROMs. Given that implicit exclusion was
most common, researchers and those who administer
PROMs may not even be aware of this problem. Without
effort to improve inclusion, unequal quality improvement
practices may become embedded in the health system.</p>
Linear model for fast background subtraction in oligonucleotide microarrays
One important preprocessing step in the analysis of microarray data is
background subtraction. In high-density oligonucleotide arrays this is
recognized as a crucial step for the global performance of the data analysis
from raw intensities to expression values.
We propose here an algorithm for background estimation based on a model in
which the cost function is quadratic in a set of fitting parameters such that
minimization can be performed through linear algebra. The model incorporates
two effects: 1) Correlated intensities between neighboring features in the chip
and 2) sequence-dependent affinities for non-specific hybridization fitted by
an extended nearest-neighbor model.
The algorithm has been tested on 360 GeneChips from publicly available data
of recent expression experiments. The algorithm is fast and accurate. Strong
correlations between the fitted values for different experiments as well as
between the free-energy parameters and their counterparts in aqueous solution
indicate that the model captures a significant part of the underlying physical
chemistry.Comment: 21 pages, 5 figure
Associations-Expulsion, Suspension, or Exclusion of Members-Physician\u27s Right to Membership in County Medical Society
Plaintiff had satisfied all state requirements for the practice of medicine on the basis of work at an osteopathic college and residency at an osteopathic hospital, and had received a state license to practice medicine and surgery. Subsequently, plaintiff attended an AMA accredited medical college which awarded him a degree based in part on his osteopathic training. The Middlesex County Medical Society refused to admit plaintiff into active membership because he had not fulfilled the membership requirement of four years of study in a medical school approved by the AMA. As a result, two private hospitals terminated plaintiff\u27s staff membership and hospital privileges. In an action in lieu of mandamus, held, for petitioner. Exclusion from the Medical Society was void, and the Society must admit plaintiff into active membership. The Medical Society is an involuntary organization whose application of a membership rule contrary to the requirements of the State Board of Medical Examiners is contrary to public policy and causes substantial injury to plaintiff. Falcone v. Middlesex County Medical Soc\u27y, 62 N.J. Super. 184, 162 A.2d 325 (1960)
Propellant transfer: Tethered depot
Spacebasing of orbital transfer vehicles at a space station requires a depot that safely and efficiently stores and transfers the resupply propellants. In order to transfer propellants, a method effectively acquire only liquid and vent only gas must exist. A method that produces a low gravity to settle propellants would bypass these weaknesses, while allowing ground-like operations. This low gravity can be passively produced using gravity gradient techniques. A satellite with a large length to diameter ratio, such as a depot attached to a space station with a tether, stabilizes along on Earth radial because of an outward acceleration proportional to the distance from the satellite's center of gravity. Analysis indicates that liquid can be setteled with relatively short tether lengths. The feasibility, design requirements, and operational limitations of a tethered refueling depot were investigated with special emphasis on slosh control
Ein Bronzedolch des Simbar-Šipak von Babylon (1025-1008). Überlegungen zu Waffenweihungen im Vorderen Orient
Ein Bronzedolch, der derzeit in der Schausammlung des Archäologischen Museums von Tabriz (Iran) ausgestellt ist, gehört zu einer prominenten Gruppe innerhalb der sogenannten „Luristanbronzen“, nämlich der der beschrifteten Randgriffdolche. Diese Waffen sind mit Inschriften verschiedener Herrscher von Babylon der letzten beiden Jahrhunderte des II. Jahrtausend v.Chr. versehen, gelegentlich auch mit Inschriften von nicht-königlichen Personen, darunter ein Schreiber und ein ša rēš šarri
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