2,484 research outputs found
Status of CMS and preparations for first physics
The status of the CMS experiment is described. After a brief review of the
detector design and a short overview of the first 5 years of assembly, the
focus of this presentation will be the parallel activities of completing and
commissioning over the last 2 years and the readiness of CMS for the exciting
prospect of first LHC operation.Comment: ICHEP08, Philadelphia, USA, July 2008. 9 page
NESTING ECOLOGY OF SANDHILL CRANES AT GRAYS LAKE, IDAHO
We examined the nesting ecology of greater sandhill cranes (Grus canadensis tabida) at Grays Lake, Idaho during 1997-99 to detennine the effects of nest-site characteristics and land use on crane nest success. These are preliminary results from 3 years of a 4-year study. Crane nests were located in portions of the Grays Lake basin from early May through late June each year (n = 131 in 1997; n = 131 in 1998; n = 143 in 1999). Apparent nest success varied among years (54% in 1997, 71% in 1998, and 53% in 1999; overall average of 59%). We estimate that 10% of nests found in 1999 were renests. Most crane nests were located in baltic rush/spikerush (Juncus balticus/Eleocharis sp.; 46% of nests), semi-wet meadow (19%), and bulrush/cattail (Scirpus sp./Typha sp.; 19%) plant communities; 62% of nests during early May were in:;; 12 cm of water. As indicated by plant community, water depths at nests, and nest isolation rankings, nest success tended to be higher where nests were in relatively deep water (ca. \u3e40 em) and were relatively isolated from access by mammalian predators. Nest success rates during 1997-99 were lower than those recorded in 1950-51 (90%, n = 107; Steel 1952) and 1970-71 (78%, n = 308; Drewien 1973). A variety offactors likely contribute to lower nest success, including changing predator communities over the past 30-40 years. Differences among years in our study may be affected by changing availability of alternate prey. Small mammal populations and crane nest success were the highest in 1998. Water-level management, relating to cranes and other waterbird populations, plant communities, and ecosystem function, is an emerging issue for land managers in the Grays Lake basin
Outcomes of a Pharmacy-Driven Inpatient Chronic Obstructive Pulmonary Disease (COPD) Transitions of Care (TOC) Management Process
Background: Current data shows 30% of patients hospitalized for Chronic Obstructive Pulmonary Disease (COPD) exacerbation are readmitted within 30 days. Medication management during transitions of care (TOC) has shown impact on clinical outcomes, however there is insufficient data to suggest how pharmacy TOC services might benefit this patient population. Objective: Evaluate the effects of pharmacy-driven COPD TOC services on hospital re-presentation rates. Methods: A single-center retrospective chart review conducted of patients hospitalized for a COPD exacerbation. A comprehensive admission-to-discharge TOC service was provided by early immersion pharmacy students, advanced immersion pharmacy students, and an attending pharmacist in a layered learning model. The primary outcome was 30-day re-presentation rate. Secondary outcomes were 90-day re-presentation rate, volume of interventions made and description of the service. Results: From 1/1/2019 to 12/31/2019, there were 2422 patients admitted for COPD exacerbation management and 756 patients received at least one intervention from the COPD TOC service. 30% needed a change to inhaler therapy. The provider accepted 57.8% of the recommended changes, and 36% and 33% of eligible patients received an inhaler technique education and bedside delivery of the new inhaler, respectively. Outcomes in the 30-day re-presentation and 90-day censored re-presentation rates for the intervention and control group were 28.5% vs 25.5% (P = .12) and 46.7% vs 42.9%, respectively. Conclusion: This study did not find a significant change in 30-day re-presentation rate with a pharmacy-driven COPD TOC service. It did find that a significant number of patients admitted with COPD exacerbation may need an inhaler change, and demonstrates the utility of this kind of TOC service for identifying and correcting medication-related problems unique to this disease state. There were opportunities for improvement in percent of patients receiving the full intended intervention
Trail Making Test performance contributes to subjective judgment of visual efficiency in older adults
Introduction: The determinant factors that influence self-reported quality of vision have yet to be fully elucidated. This study evaluated a range of contextual information, established psychophysical tests, and in particular, a series of cognitive tests as potentially novel determinant factors. Materials & Methods: Community dwelling adults (aged 50+) recruited to Wave 1 of The Irish Longitudinal Study on Ageing, excluding those registered blind, participated in this study (N = 5,021). Self-reports of vision were analysed in relation to visual acuity and contrast sensitivity, ocular pathology, visual (Choice Response Time task; Trail Making Test) and global cognition. Contextual factors such as having visited an optometrist and wearing glasses were also considered. Ordinal logistic regression was used to determine univariate and multivariate associations. Results and Discussion: Poor Trail Making Test performance (Odds ratio, OR = 1.36), visual acuity (OR = 1.72) and ocular pathology (OR = 2.25) were determinant factors for poor versus excellent vision in self-reports. Education, wealth, age, depressive symptoms and general cognitive fitness also contributed to determining self-reported vision. Conclusions: Trail Making Test contribution to self-reports may capture higher level visual processing and should be considered when using self-reports to assess vision and its role in cognitive and functional health
A Letter of Intent to Install a milli-charged Particle Detector at LHC P5
In this LOI we propose a dedicated experiment that would detect
"milli-charged" particles produced by pp collisions at LHC Point 5. The
experiment would be installed during LS2 in the vestigial drainage gallery
above UXC and would not interfere with CMS operations. With 300 fb of
integrated luminosity, sensitivity to a particle with charge
can be achieved for masses of GeV,
and charge for masses of GeV,
greatly extending the parameter space explored for particles with small charge
and masses above 100 MeV.Comment: 19 pages, 7 figure
The MATHUSLA Test Stand
The rate of muons from LHC collisions reaching the surface above the
ATLAS interaction point is measured and compared with expected rates from
decays of and bosons and - and -quark jets. In addition, data
collected during periods without beams circulating in the LHC provide a
measurement of the background from cosmic ray inelastic backscattering that is
compared to simulation predictions. Data were recorded during 2018 in a 2.5
2.5 6.5~ active volume MATHUSLA test stand detector
unit consisting of two scintillator planes, one at the top and one at the
bottom, which defined the trigger, and six layers of RPCs between them, grouped
into three -measuring layers separated by 1.74 m from each other.
Triggers selecting both upward-going tracks and downward-going tracks were
used.Comment: 18 pages, 11 figures, 1 tabl
Environmental Noise in Advanced LIGO Detectors
The sensitivity of the advanced LIGO detectors to gravitational waves can be affected by environmental disturbances external to the detectors themselves. Since the transition from the former initial LIGO phase, many improvements have been made to the equipment and techniques used to investigate these environmental effects. These methods have aided in tracking down and mitigating noise sources throughout the first three observing runs of the advanced detector era, keeping the ambient contribution of environmental noise below the background noise levels of the detectors. In this paper we describe the methods used and how they have led to the mitigation of noise sources, the role that environmental monitoring has played in the validation of gravitational wave events, and plans for future observing runs
High-Precision Measurement of the 19Ne Half-Life and Implications for Right-Handed Weak Currents
We report a precise determination of the 19Ne half-life to be s. This result disagrees with the most recent precision
measurements and is important for placing bounds on predicted right-handed
interactions that are absent in the current Standard Model. We are able to
identify and disentangle two competing systematic effects that influence the
accuracy of such measurements. Our findings prompt a reassessment of results
from previous high-precision lifetime measurements that used similar equipment
and methods.Comment: 5 pages and 5 figures. Paper accepted for publication in Phys. Rev.
Let
- …