476 research outputs found
Molecular Hydrogen in the FUSE Translucent Lines of Sight: The Full Sample
We report total abundances and related parameters for the full sample of the
FUSE survey of molecular hydrogen in 38 translucent lines of sight. New results
are presented for the "second half" of the survey involving 15 lines of sight
to supplement data for the first 23 lines of sight already published. We assess
the correlations between molecular hydrogen and various extinction parameters
in the full sample, which covers a broader range of conditions than the initial
sample. In particular, we are now able to confirm that many, but not all, lines
of sight with shallow far-UV extinction curves and large values of the
total-to-selective extinction ratio, = / -- characteristic
of larger than average dust grains -- are associated with particularly low
hydrogen molecular fractions (). In the lines of sight with large
, there is in fact a wide range in molecular fractions, despite the
expectation that the larger grains should lead to less H formation.
However, we see specific evidence that the molecular fractions in this
sub-sample are inversely related to the estimated strength of the UV radiation
field and thus the latter factor is more important in this regime. We have
provided an update to previous values of the gas-to-dust ratio, (H)/, based on direct measurements of (H) and (H I).
Although our value is nearly identical to that found with Copernicus data, it
extends the relationship by a factor of 2 in reddening. Finally, as the new
lines of sight generally show low to moderate molecular fractions, we still
find little evidence for single monolithic "translucent clouds" with 1.Comment: 35 pages, 5 tables, 7 figures, accepted for publication in The
Astrophysical Journal Supplements Serie
High-Resolution Observations of Interstellar Ca I Absorption -- Implications for Depletions and Electron Densities in Diffuse Clouds
We present high-resolution (FWHM ~ 0.3-1.5 km/s) spectra of interstellar Ca I
absorption toward 30 Galactic stars. Comparisons of the column densities of Ca
I, Ca II, K I, and other species -- for individual components identified in the
line profiles and also when integrated over entire lines of sight -- yield
information on relative electron densities and depletions. There is no obvious
relationship between the ratio N(Ca I)/N(Ca II) [equal to n_e/(Gamma/alpha_r)
for photoionization equilibrium] and the fraction of hydrogen in molecular form
f(H2) (often taken to be indicative of the local density n_H). For a smaller
sample of sightlines for which the thermal pressure (n_H T) and local density
can be estimated via analysis of the C I fine-structure excitation, the average
electron density inferred from C, Na, and K (assuming photoionization
equilibrium) seems to be independent of n_H and n_H T. While the n_e obtained
from the ratio N(Ca I)/N(Ca II) is often significantly higher than the values
derived from other elements, the patterns of relative n_e derived from
different elements show both similarities and differences for different lines
of sight -- suggesting that additional processes besides photoionization and
radiative recombination commonly and significantly affect the ionization
balance of heavy elements in diffuse IS clouds. Such additional processes may
also contribute to the (apparently) larger than expected fractional ionizations
(n_e/n_H) found for some lines of sight with independent determinations of n_H.
In general, inclusion of ``grain-assisted'' recombination does reduce the
inferred n_e, but it does not reconcile the n_e estimated from different
elements. The depletion of calcium may have a much weaker dependence on density
than was suggested by earlier comparisons with CH and CN.Comment: aastex, 70 pages, accepted to ApJ
Massage for Children Undergoing Hematopoietic Cell Transplantation: A Qualitative Report
Background. No in-depth qualitative research exists about the effects of therapeutic massage with children hospitalized to undergo hematopoietic cell transplantation (HCT). The objective of this study is to describe parent caregivers' experience of the effects of massage/acupressure for their children undergoing HCT. Methods. We conducted a qualitative analysis of open-ended interviews with 15 parents of children in the intervention arm of a massage/acupressure trial. Children received both practitioner and parent-provided massage/acupressure. Results. Parents reported that their child experienced relief from pain and nausea, relaxation, and greater ease falling asleep. They also reported increased caregiver competence and closeness with their child as a result of learning and performing massage/acupressure. Parents supported a semistandardized massage protocol. Conclusion. Massage/acupressure may support symptom relief and promote relaxation and sleep among pediatric HCT patients if administered with attention to individual patients' needs and hospital routines and may relieve stress among parents, improve caregiver competence, and enhance the sense of connection between parent and child
Distribution, abundance and diversity of Gambierdiscus spp. from a ciguatera endemic area in Marakei, Republic of Kiribati
Author Posting. © The Author(s), 2014. This is the author's version of the work. It is posted here by permission of Elsevier for personal use, not for redistribution. The definitive version was published in Harmful Algae 34 (2014): 56–68, doi:10.1016/j.hal.2014.02.007.Ciguatera is a serious seafood poisoning syndrome caused by the consumption of
ciguatoxin-contaminated finfish from tropical and subtropical regions. This study
examined the community structure of ciguatera-associated dinoflagellates and the
distribution pattern, taxonomy and toxicity of Gambierdiscus spp. from a high-risk area
of Marakei, Republic of Kiribati. The genera Gambierdiscus, Prorocentrum, Ostreopsis,
Amphidinium and Coolia were present, and generally the former three dominated the
dinoflagellate assemblage. Among these three, Gambierdiscus was the most abundant
dinoflagellate genus observed at three of the four sites sampled, two of which (Sites 1 and
2) were on the northern half of the island and two (Sites 3 and 4) on the southern half.
The following patterns of abundance were observed among sites: (1) Average
Gambierdiscus spp. abundance at the northern sites exceeded the southern sites by a
factor of 19-54; and (2) Gambierdiscus spp. abundance at shallow sites (2-3 m) exceeded
deeper sites (10-15 m). The distribution of Gambierdiscus spp. at Marakei corresponded
with previously observed patterns of fish toxicity, with fish from southern locations being
much less toxic than fish sampled north of the central channel. DNA sequencing
identified three Gambierdiscus species (G. carpenteri, G. belizeanus, G. pacificus) and
three previously unreported ribotypes (Gambierdiscus sp. type 4, Gambierdiscus sp. type
5, Gambierdiscus sp. type 6) in the samples; Gambierdiscus sp. type 4 may represent a
Pacific clade of Gambierdiscus sp. ribotype 1. Toxicity analyses determined that
Gambierdiscus sp. type 4 isolates were more toxic than the Gambierdiscus sp. type 5 and
G. pacificus isolates, with toxin contents of 2.6-6.0 (mean: 4.3± 1.4), 0.010 and 0.011 fg
P-CTX-1 eq cell-1, respectively. Despite low densities of
Gambierdiscus spp. observed at
Marakei relative to other studies in other parts of the world, the presence of low and
moderately toxic populations may be sufficient to render the western coast of Marakei a
high-risk area for ciguatera. The long history of toxicity along the western side of
Marakei suggests that large-scale oceanographic forcings that regulate the distribution of
Gambierdiscus spp. along the western side of Marakei may have remained relatively
stable over that time. Chronic as well as acute exposure to ciguatoxins may therefore
pose an important human health impact to the residents of Marakei.Funding for this work was provided by the
Centers for Disease Control and Prevention (U01 EH000421), USFDA
(F223201000060C), NOAA NOS (Cooperative Agreement NA11NOS4780060,
NA11NOS4780028), National Program on Key Basic Research Project of China (973
Program, 2013CB956503), the Nonprofit Research Project for the State Oceanic
Administration (China, 201005006-01), and the National Natural Science Foundation of
China (41276110)
Ursinus College Alumni Journal, July 1961
The President writes • Thirty years of champions and their coach • Were we wrong about the Victorians? • A view of Vietnam • A philosopher looks at Barry Goldwater • The alumni seminar • Dr. Paisley dies • William D. Reimert elected President of the Board of Directors • Ursinus willed $92,657 • Commencement, 1961 • Peirce paints McClure portrait • Cutting campus • Alumni Day review • Constitution change • Loyalty Fund tops 50% participation • Election results • Alumni awards committee • Montgomery regional organized • A Far East odyssey • Harry L. Showalter, \u2741 • Best track season in Ursinus history • Baseball and tennis • Clarence A. Warden, Jr. • Class notes • The class of 1897 • Weddings • Births • Necrology • College chaplain haiku experthttps://digitalcommons.ursinus.edu/alumnijournal/1071/thumbnail.jp
The Vehicle, Fall 1970
Vol. 13, No. 1
Table of Contents
A Thought Written in a Locked RoomJudy Huntpage 1
The Eggshell MoonWilliam Probeckpage 2
PoemBarb Parkerpage 3
4/5, May, 1970J. Michael Sainpage 5
A TreeRichard Stickannpage 6
both or noneMichelle Hallpage 6
The TrainSteve Sestinapage 8
Attempted DiscoveryDonald R. Johnsonpage 16
Island of SmokeVerna L. Jonespage 18
AwakeRobert Bladepage 19
PoemMary Klinkerpage 19
In ChurchMuriel Poolpage 21
PoemBarb Parkerpage 21
PoemMichelle Hallpage 22
Pod\u27nerVerna L. Jonespage 23
Rain and Other ThingsCarol Staniecpage 24
PoemAnn Graffpage 24
Examination of StudentdomMelvin Zaloudekpage 26
Women\u27s LiberationTonya Mortonpage 27
Morning Reflections on the Evening NewsPrudence Herberpage 29
Art and Photography Credits
Jim Diaspage 4
Mike Dorseypages 7, 20
David Griffithpages 8, 17, 25
Cover PhotographyMark McKinneyhttps://thekeep.eiu.edu/vehicle/1024/thumbnail.jp
The Three Rs: The Way Forward
This is the report of the eleventh of a series of workshops organised by the European Centre for the Validation of Alternative Methods (ECVAM), which was established in 1991 by the European Commission. ECVAM\u27s main goal, as defined in 1993 by its Scientific Advisory Committee, is to promote the scientific and regulatory acceptance of alternative methods which are of importance to the biosciences and which reduce, refine or replace the use of laboratory animals. One of the first priorities set by ECVAM was the implementation of procedures which would enable it to become well-informed about the state-of-the-art of non-animal test development and validation. and the potential for the possible incorporation of replacement alternative tests into regulatory procedures. It was decided that this would be best achieved by the organisation of ECVAM workshops on specific topics, at which small groups of invited experts would review the current status of various types of in vitro tests and their potential uses, and make recommendations about the best ways forward
In search of the authentic nation: landscape and national identity in Canada and Switzerland
While the study of nationalism and national identity has flourished in the last decade, little attention has been devoted to the conditions under which natural environments acquire significance in definitions of nationhood. This article examines the identity-forming role of landscape depictions in two polyethnic nation-states: Canada and Switzerland. Two types of geographical national identity are identified. The first – what we call the ‘nationalisation of nature’– portrays zarticular landscapes as expressions of national authenticity. The second pattern – what we refer to as the ‘naturalisation of the nation’– rests upon a notion of geographical determinism that depicts specific landscapes as forces capable of determining national identity. The authors offer two reasons why the second pattern came to prevail in the cases under consideration: (1) the affinity between wild landscape and the Romantic ideal of pure, rugged nature, and (2) a divergence between the nationalist ideal of ethnic homogeneity and the polyethnic composition of the two societies under consideration
Can patient-led surveillance detect subsequent new primary or recurrent melanomas and reduce the need for routinely scheduled follow-up? A protocol for the MEL-SELF randomised controlled trial
This research project is funded by a National Health and Medical Research Council (NHMRC) Project grant (#1163054). The funder had no role in the design of the study and will have no role in the collection, analysis, and interpretation of the data; the writing of the report; or the decision to submit the report for publication. Funding Information: AEC is funded by a Career Development Fellowship from the National Health and Medical Research Council (NHMRC; 1147843). JFT is a recipient of an NHMRC Program Grant (1093017). RPMS is supported by Melanoma Institute Australia. RAS is supported by a NHMRC Program Grant and Practitioner Fellowship. For RAS, support from the from colleagues at Melanoma Institute Australia, Royal Prince Alfred Hospital and NSW Health Pathology is also gratefully acknowledged. RLM is supported with an NHMRC Investigator grant (1194703) and a University of Sydney Robinson Fellowship. HPS holds an NHMRC MRFF Next Generation Clinical Researchers Program Practitioner Fellowship (APP1137127). JH is supported by an NHMRC Early Career Fellowship (1112509). KB is supported by an NHMRC Investigator Grant (1174523) and a University of Sydney Research Accelerator (SOAR) Prize.Peer reviewedPublisher PD
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