900 research outputs found
Easing the Pain Communities Must Act to Heal Wounds of African-American Boys and Young Men
This report looks at the struggles of Black boys and young men and how pain is the root of the problem. It attempts to answer the questions, "Who Cares?", "Who Understands?", and "Who's Responsible?"
Water bath calorimetric study of excess heat generation in 'resonant transfer' plasmas
Water bath calorimetry was used to demonstrate one more peculiar phenomenon
associated with a certain class of mixed gas plasmas termed resonant transfer,
or RT plasmas. Specifically, He/H2 (10%) (500 mTorr), Ar/H2 (10%) (500 mTorr),
and H2O(g) (500 and 200 mTorr) plasmas generated with an Evenson microwave
cavity consistently yielded on the order of 50% more heat than non RT plasma
(controls) such as He, Kr, Kr/H2 (10%), under identical conditions of gas flow,
pressure, and microwave operating conditions. The excess power density of RT
plasmas was of the order 10 W / cm-3. In earlier studies with these same RT
plasmas it was demonstrated that other unusual features were present including
dramatic broadening of the hydrogen Balmer series lines, unique vacuum
ultraviolet (VUV) lines, and in the case of water plasmas, population inversion
of the hydrogen excited states. Both the current results and the earlier
results are completely consistent with the existence of a hitherto unknown
exothermic chemical reaction, such as that predicted by Mills, occurring in RT
plasmas.Comment: 30 pages, 2 tables, 5 figure
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Safe use of symbols in handover documentation for medical teams
Concern has been reported about the safe use of medical abbreviations in documents such as handover sheets and medical notes, especially when information is being communicated between staff of different specialties (BBC 2008, Sheppard et al. 2008). This article describes a study to investigate whether the use of symbols in handover documentation that is shared within and between multidisciplinary teams (MDTs) has similar safety implications. We asked 19 healthcare professionals from a range of specialties to identify 45 different combinations of 38 individual symbols. The symbols and combinations of symbols were extracted from 102 handover sheets taken from 6 different healthcare contexts in 4 London hospitals. Three symbols proposed in Microsoft's Common User Interface guidelines for alert symbols were also included. Results reveal that while some symbols are well understood, many others are either ambiguous or unknown. These results have implications for the safe use of symbols in medical documents, including paper and electronic handover documents and Electronic Patient Records (EPRs), especially where teams comprise individuals from different professional backgrounds, i.e. MDTs. We offer initial suggestions for standardisation and further research
Extragalactic Zeeman Detections in OH Megamasers
We have measured the Zeeman splitting of OH megamaser emission at 1667 MHz
from five (ultra)luminous infrared galaxies ([U]LIRGs) using the 305 m Arecibo
telescope and the 100 m Green Bank Telescope. Five of eight targeted galaxies
show significant Zeeman-splitting detections, with 14 individual masing
components detected and line-of-sight magnetic field strengths ranging from
~0.5-18 mG. The detected field strengths are similar to those measured in
Galactic OH masers, suggesting that the local process of massive star formation
occurs under similar conditions in (U)LIRGs and the Galaxy, in spite of the
vastly different large-scale environments. Our measured field strengths are
also similar to magnetic field strengths in (U)LIRGs inferred from synchrotron
observations, implying that milligauss magnetic fields likely pervade most
phases of the interstellar medium in (U)LIRGs. These results provide a
promising new tool for probing the astrophysics of distant galaxies.Comment: 32 pages, 14 figures, 8 tables. Accepted for publication in The
Astrophysical Journal v680n2, June 20, 2008; corrected 2 typo
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Evaluating New Interactions in Healthcare: Challenges and Approaches
New technologies for supporting the provision of healthcare are increasingly pervasive. While healthcare computing previously referred to a desktop computer within the consulting room, we are now seeing an ever broader range of software, hardware and settings. This workshop is concerned with how to conduct evaluations which allow assessment of the overall impact of technology. The workshop will explore challenges and approaches for evaluating new interactions in healthcare. In this paper we outline the goals for this workshop and summarize the issues and questions it intends to explore
Method for the Manufacturing of a Composite
Described herein are composites that are relatively lightweight, high strength and low thermal conductivity. Also described herein are methods for the manufacture and use thereof
VLBA Imaging of the OH Maser in IIIZw35
We present a parsec-scale image of the OH maser in the nucleus of the active
galaxy IIIZw35, made using the Very Long Baseline Array at a wavelength of 18
cm. We detected two distinct components, with a projected separation of 50 pc
(for D=110 Mpc) and a separation in Doppler velocity of 70 km/s, which contain
50% of the total maser flux. Velocity gradients within these components could
indicate rotation of clouds with binding mass densities of ~7000 solar masses
per cubic parsec, or total masses of more than 500,000 solar masses. Emission
in the 1665-MHz OH line is roughly coincident in position with that in the
1667-MHz line, although the lines peak at different Doppler velocities. We
detected no 18 cm continuum emission; our upper limit implies a peak apparent
optical depth greater than 3.4, assuming the maser is an unsaturated amplifier
of continuum radiation.Comment: 10 pages, 3 figure
Acute flaccid myelitis caused by enterovirus D68 unmasking primary intracranial tumour in a previously healthy child
Self-repair ability of evolved self-assembling systems in cellular automata
Self-repairing systems are those that are able to reconfigure themselves following disruptions to bring them back into a defined normal state. In this paper we explore the self-repair ability of some cellular automata-like systems, which differ from classical cellular automata by the introduction of a local diffusion process inspired by chemical signalling processes in biological development. The update rules in these systems are evolved using genetic programming to self-assemble towards a target pattern. In particular, we demonstrate that once the update rules have been evolved for self-assembly, many of those update rules also provide a self-repair ability without any additional evolutionary process aimed specifically at self-repair
Streams of data from drops of water: 21st century molecular microbial ecology
Microorganisms are ubiquitous and represent a taxonomically and functionally diverse component of freshwater environments of significant ecological importance. The bacteria, archaea, and microbial eukarya in freshwater systems support a range of ecosystem processes and functions, including mediating all major biogeochemical cycles, and therefore regulate the flow of multiple ecosystem services. Yet relative to conspicuous higher taxa, microbial ecology remains poorly understood. As the anthropocene progresses, the demand for freshwater–ecosystem services is both increasing with growing human population density, and by association, increasingly threatened from multiple and often interacting stressors, such as climate change, eutrophication, and chemical pollution. Thus, it is imperative to understand the ecology of microorganisms and their functional role in freshwater ecosystems if we are to manage the future of these environments effectively. To do this, researchers have developed a vast array of molecular tools that can illuminate the diversity, composition, and activity of microbial communities. Within this primer, we discuss the history of molecular approaches in microbial ecology, and highlight the scope of questions that these methods enable researchers to address. Using some recent case studies, we describe some exemplar research into the microbial ecology of freshwater systems, and emphasize how molecular methods can provide novel ecological insights. Finally, we detail some promising developments within this research field, and how these might shape the future research landscape of freshwater microbial ecology
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