384 research outputs found
Leveraging Academic-Service Partnerships: Implications for Implementing the RWJ/IOM's Recommendations to Improve Quality, Access, and Value in Academic Medical Centers
Transformation of the current healthcare system is critical to achieve improved quality, safety, value, and access. Patients with multiple, chronic health conditions require integrated care coordination yet the current health care system is fragmented and complex. Nursing must play a key role in constructing a system that is value based and patient focused. The Robert Wood Johnson/Institute of Medicine (RWJ/IOM) report on the future of nursing outlines strategic opportunities for nursing to take a lead role in this transformation. Partnerships across academic institutions and health care systems have the potential to address issues through mutual goal setting, sharing of risks, responsibilities, and accountability, and realignment of resources. The purpose of this paper is to present Stony Brook University Medical Center's (SBUMC) academic-service partnership which implemented several of the RWJ/IOM recommendations. The partnership resulted in several initiatives that improved quality, safety, access, and value. It also characterized mutual goal setting, shared missions and values, and a united vision for health care
Right turn crashes at signalised intersections
This study examined the issue of right turn crashes at Adelaide signalised intersections through a literature review, an analysis of relevant South Australian fatal crashes, an examination of Adelaide metropolitan crashes reported to the police and some in-depth crash investigation. Such crashes were found to be relatively common and to be associated with both older and younger right turning drivers. Full control of right turn movements at all times of the day appears to be the most effective treatment. Dedicated right turn lanes and the use of red light and speed cameras may also offer some safety benefits.C.N. Kloeden, S.L. Versteegh, V.L. Lindsay, A.J. McLea
Rollover crashes
This report analyses data from police reports on crashes, and from an in-depth study of rural crashes, to examine the characteristics of rollover crashes in South Australia. The risk of a single vehicle rollover crash increases markedly at higher travelling speeds and eighty per cent of these crashes in the in-depth study were initiated by the car running at least partially onto the left unsealed shoulder. Road-related countermeasures such as audio-tactile edge lining and sealed shoulders are discussed, as is the increase with travelling speed in the risk of a crash being a single vehicle rollover. The important role of seat belt wearing in protection against serious or fatal injury is confirmed yet again. The report concludes with a brief review of the literature on the design of vehicles in relation to rollover crashes, including the benefits of electronic stability control.A.J. McLean, C.N. Kloeden, G. Ponte, M.R.J. Baldock, V.L. Lindsay and A.L. van den Ber
Quit Attempt Correlates among Smokers by Race/Ethnicity
Introduction: Cigarette smoking is the leading preventable cause of premature deaths in the U.S., accounting for approximately 443,000 deaths annually. Although smoking prevalence in recent decades has declined substantially among all racial/ethnic groups, disparities in smoking-related behaviors among racial/ethnic groups continue to exist. Two of the goals of Healthy People 2020 are to reduce smoking prevalence among adults to 12% or less and to increase smoking cessation attempts by adult smokers from 41% to 80%. Our study assesses whether correlates of quit attempts vary by race/ethnicity among adult (≥18 years) smokers in the U.S. Understanding racial/ethnic differences in how both internal and external factors affect quit attempts is important for targeting smoking-cessation interventions to decrease tobacco-use disparities. Methods: We used 2003 Tobacco Use Supplement to the Current Population Survey (CPS) data from 16,213 adults to examine whether the relationship between demographic characteristics, smoking behaviors, smoking policies and having made a quit attempt in the past year varied by race/ethnicity. Results: Hispanics and persons of multiple races were more likely to have made a quit attempt than whites. Overall, younger individuals and those with >high school education, who smoked fewer cigarettes per day and had smoked for fewer years were more likely to have made a quit attempt. Having a smoke-free home, receiving a doctor’s advice to quit, smoking menthol cigarettes and having a greater time to when you smoked your first cigarette of the day were also associated with having made a quit attempt. The relationship between these four variables and quit attempts varied by race/ethnicity; most notably receiving a doctor’s advice was not related to quit attempts among Asian American/Pacific Islanders and menthol use among whites was associated with a lower prevalence of quit attempts while black menthol users were more likely to have made a quit attempt than white non-menthol users. Conclusions: Most correlates of quit attempts were similar across all racial/ethnic groups. Therefore population-based comprehensive tobacco control programs that increase quit attempts and successful cessation among all racial/ethnic groups should be continued and expanded. Additional strategies may be needed to encourage quit attempts among less educated, older, and more addicted smokers
UBVRI Light Curves of 44 Type Ia Supernovae
We present UBVRI photometry of 44 type-Ia supernovae (SN Ia) observed from
1997 to 2001 as part of a continuing monitoring campaign at the Fred Lawrence
Whipple Observatory of the Harvard-Smithsonian Center for Astrophysics. The
data set comprises 2190 observations and is the largest homogeneously observed
and reduced sample of SN Ia to date, nearly doubling the number of
well-observed, nearby SN Ia with published multicolor CCD light curves. The
large sample of U-band photometry is a unique addition, with important
connections to SN Ia observed at high redshift. The decline rate of SN Ia
U-band light curves correlates well with the decline rate in other bands, as
does the U-B color at maximum light. However, the U-band peak magnitudes show
an increased dispersion relative to other bands even after accounting for
extinction and decline rate, amounting to an additional ~40% intrinsic scatter
compared to B-band.Comment: 84 authors, 71 pages, 51 tables, 10 figures. Accepted for publication
in the Astronomical Journal. Version with high-res figures and electronic
data at http://astron.berkeley.edu/~saurabh/cfa2snIa
The Hubble Higher-Z Supernova Search: Supernovae to z=1.6 and Constraints on Type Ia Progenitor Models
We present results from the Hubble Higher-z Supernova Search, the first
space-based open field survey for supernovae (SNe). In cooperation with the
Great Observatories Origins Deep Survey, we have used the Hubble Space
Telescope with the Advanced Camera for Surveys to cover 300 square arcmin in
the area of the Chandra Deep Field South and the Hubble Deep Field North on
five separate search epochs (separated by 45 day intervals) to a limiting
magnitude of z'=26. These deep observations have allowed us to discover 42 SNe
in the redshift range 0.2 < z < 1.6. As these data span a large range in
redshift, they are ideal for testing the validity of Type Ia supernova
progenitor models with the distribution of expected ``delay times,'' from
progenitor star formation to SN Ia explosion, and the SN rates these models
predict. Through a Bayesian maximum likelihood test, we determine which
delay-time models best reproduce the redshift distribution of SNe Ia discovered
in this survey. We find that models that require a large fraction of ``prompt''
(less than 2 Gyr) SNe Ia poorly reproduce the observed redshift distribution
and are rejected at 95% confidence. We find that Gaussian models best fit the
observed data for mean delay times in the range of 3 to 4 Gyr.Comment: 32 pages, 15 figures, accepted for publication in the Astrophysical
Journa
The Long-Baseline Neutrino Experiment: Exploring Fundamental Symmetries of the Universe
The preponderance of matter over antimatter in the early Universe, the
dynamics of the supernova bursts that produced the heavy elements necessary for
life and whether protons eventually decay --- these mysteries at the forefront
of particle physics and astrophysics are key to understanding the early
evolution of our Universe, its current state and its eventual fate. The
Long-Baseline Neutrino Experiment (LBNE) represents an extensively developed
plan for a world-class experiment dedicated to addressing these questions. LBNE
is conceived around three central components: (1) a new, high-intensity
neutrino source generated from a megawatt-class proton accelerator at Fermi
National Accelerator Laboratory, (2) a near neutrino detector just downstream
of the source, and (3) a massive liquid argon time-projection chamber deployed
as a far detector deep underground at the Sanford Underground Research
Facility. This facility, located at the site of the former Homestake Mine in
Lead, South Dakota, is approximately 1,300 km from the neutrino source at
Fermilab -- a distance (baseline) that delivers optimal sensitivity to neutrino
charge-parity symmetry violation and mass ordering effects. This ambitious yet
cost-effective design incorporates scalability and flexibility and can
accommodate a variety of upgrades and contributions. With its exceptional
combination of experimental configuration, technical capabilities, and
potential for transformative discoveries, LBNE promises to be a vital facility
for the field of particle physics worldwide, providing physicists from around
the globe with opportunities to collaborate in a twenty to thirty year program
of exciting science. In this document we provide a comprehensive overview of
LBNE's scientific objectives, its place in the landscape of neutrino physics
worldwide, the technologies it will incorporate and the capabilities it will
possess.Comment: Major update of previous version. This is the reference document for
LBNE science program and current status. Chapters 1, 3, and 9 provide a
comprehensive overview of LBNE's scientific objectives, its place in the
landscape of neutrino physics worldwide, the technologies it will incorporate
and the capabilities it will possess. 288 pages, 116 figure
Description of the methodology used in an ongoing pediatric care interventional study of children born with cleft lip and palate in South America [NCT00097149]
BACKGROUND: The contribution of birth defects, including cleft lip and palate, to neonatal and infant mortality and morbidity is substantial. As other mortality and morbidity causes including infections, hygiene, prematurity, and nutrition are eradicated in less developed countries, the burden of birth defects will increase proportionally. METHODS/DESIGN: We are using cleft lip and palate as a sentinel birth defect to evaluate its burden on neonatal and infant health and to assess the effectiveness of systematic pediatric care during the first month and first two years of life in decreasing this burden. The neonatal intervention, consisting of weekly pediatric evaluation and referral to appropriate care, is delivered to about 696 infants born with cleft lip and/or palate in 47 hospitals in South America. Neonatal mortality in this group will be compared to that in a retrospective control group of about 464 infants born with cleft lip and/or palate in the same hospitals. The subgroup of infants with isolated clefts of both the lip and palate (about 264) is also randomized into two groups, intervened and non-intervened, and further followed up over 2 years. Intervened cases are evaluated by pediatricians every three months and referred for appropriate care. The intervened and non-intervened cases will be compared over study outcomes to evaluate the intervention effectiveness. Non-intervened cases are matched and compared to healthy controls to assess the burden of cleft lip and palate. Outcomes include child's neurological and physical development and family social and economic conditions. DISCUSSION: Large-scale clinical trials to improve infant health in developing countries are commonly suggested, making it important to share the methods used in ongoing studies with other investigators implementing similar research. We describe here the content of our ongoing pediatric care study in South America. We hope that this may help researchers targeting this area to plan their studies more effectively and encourage the development of similar research efforts to target other birth defects or infant outcomes such as prematurity and low birth weight
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Antisense down-regulation of 4CL expression alters lignification, tree growth and saccharification potential of field-grown poplar
Transgenic down-regulation of the Pt4CL1 gene family encoding 4-coumarate:coenzyme A ligase (4CL) has been reported as a
means for reducing lignin content in cell walls and increasing overall growth rates, thereby improving feedstock quality for
paper and bioethanol production. Using hybrid poplar (Populus tremula 3 Populus alba), we applied this strategy and examined
field-grown transformants for both effects on wood biochemistry and tree productivity. The reductions in lignin contents
obtained correlated well with 4CL RNA expression, with a sharp decrease in lignin amount being observed for RNA
expression below approximately 50% of the nontransgenic control. Relatively small lignin reductions of approximately 10%
were associated with reduced productivity, decreased wood syringyl/guaiacyl lignin monomer ratios, and a small increase in
the level of incorporation of H-monomers (p-hydroxyphenyl) into cell walls. Transgenic events with less than approximately
50% 4CL RNA expression were characterized by patches of reddish-brown discolored wood that had approximately twice the
extractive content of controls (largely complex polyphenolics). There was no evidence that substantially reduced lignin
contents increased growth rates or saccharification potential. Our results suggest that the capacity for lignin reduction is
limited; below a threshold, large changes in wood chemistry and plant metabolism were observed that adversely affected
productivity and potential ethanol yield. They also underline the importance of field studies to obtain physiologically
meaningful results and to support technology development with transgenic trees
A2ML1 and otitis media : novel variants, differential expression, and relevant pathways
A genetic basis for otitis media is established, however, the role of rare variants in disease etiology is largely unknown. Previously a duplication variant within A2ML1 was identified as a significant risk factor for otitis media in an indigenous Filipino population and in US children. In this report exome and Sanger sequencing was performed using DNA samples from the indigenous Filipino population, Filipino cochlear implantees, US probands, Finnish, and Pakistani families with otitis media. Sixteen novel, damaging A2ML1 variants identified in otitis media patients were rare or low-frequency in population-matched controls. In the indigenous population, both gingivitis and A2ML1 variants including the known duplication variant and the novel splice variant c.4061 + 1 G>C were independently associated with otitis media. Sequencing of salivary RNA samples from indigenous Filipinos demonstrated lower A2ML1 expression according to the carriage of A2ML1 variants. Sequencing of additional salivary RNA samples from US patients with otitis media revealed differentially expressed genes that are highly correlated with A2ML1 expression levels. In particular, RND3 is upregulated in both A2ML1 variant carriers and high-A2ML1 expressors. These findings support a role for A2ML1 in keratinocyte differentiation within the middle ear as part of otitis media pathology and the potential application of ROCK inhibition in otitis media.Peer reviewe
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