130 research outputs found
Chicago Recovery Partnership Evaluation of the American Recovery and Reinvestment Act
From 2009-2011, the City of Chicago and Cook County received a total of 1.09 billion of total spending in Chicago and Cook County, resulting in net benefits ranging from -2,740.2 million. The wide range in net benefits is attributed largely to education, which received over half of ARRA funding
The American Association for the Surgery of Trauma renal injury grading scale: Implications of the 2018 revisions for injury reclassification and predicting bleeding interventions.
BackgroundIn 2018, the American Association for the Surgery of Trauma (AAST) published revisions to the renal injury grading system to reflect the increased reliance on computed tomography scans and non-operative management of high-grade renal trauma (HGRT). We aimed to evaluate how these revisions will change the grading of HGRT and if it outperforms the original 1989 grading in predicting bleeding control interventions.MethodsData on HGRT were collected from 14 Level-1 trauma centers from 2014 to 2017. Patients with initial computed tomography scans were included. Two radiologists reviewed the scans to regrade the injuries according to the 1989 and 2018 AAST grading systems. Descriptive statistics were used to assess grade reclassifications. Mixed-effect multivariable logistic regression was used to measure the predictive ability of each grading system. The areas under the curves were compared.ResultsOf the 322 injuries included, 27.0% were upgraded, 3.4% were downgraded, and 69.5% remained unchanged. Of the injuries graded as III or lower using the 1989 AAST, 33.5% were upgraded to grade IV using the 2018 AAST. Of the grade V injuries, 58.8% were downgraded using the 2018 AAST. There was no statistically significant difference in the overall areas under the curves between the 2018 and 1989 AAST grading system for predicting bleeding interventions (0.72 vs. 0.68, p = 0.34).ConclusionAbout one third of the injuries previously classified as grade III will be upgraded to grade IV using the 2018 AAST, which adds to the heterogeneity of grade IV injuries. Although the 2018 AAST grading provides more anatomic details on injury patterns and includes important radiologic findings, it did not outperform the 1989 AAST grading in predicting bleeding interventions.Level of evidencePrognostic and Epidemiological Study, level III
Peat Moss–Like Vegetative Remains from Ordovician Carbonates
Premise of research. Climatically favorable conditions correspond with fossil evidence for dramatic Ordovician marine biodiversification, but coeval terrestrial biodiversity is less well understood. Although diverse Middle and Late Ordovician microfossils are interpreted as reproductive remains of early bryophyte-like land plants (consistent with molecular data indicating pre-Ordovician embryophyte origin), the vegetative structure of Ordovician plants remains mysterious, as do relationships to modern groups. Because distinctive fungal microfossils indicating land plant presence were previously reported from Ordovician carbonate deposits in Wisconsin, we examined another nearby outcrop for additional evidence of terrestrial biodiversification.
Methodology. Replicate collections were made from well-understood 455–454 Ma Platteville Formation carbonates of relatively low porosity and hydraulic conductivity. We employed measures to avoid contamination, and organic remains extracted by acid maceration were characterized by light and scanning electron microscopy and energy-dispersive X-ray spectroscopy.
Pivotal results. Multicellular organic fragments displayed distinctive cellular features shared with modern vegetative peat mosses but differed from modern materials, e.g., fossil presence of mineral coatings, absence of epibionts. Biometric features of mosslike microfossils isolated from carbonates collected and macerated 12 yr apart by separate investigators did not differ. Putative peat moss remains occurred with foraminifera similar in frequency and thermal maturity to types previously described from the same formation. No diatoms, pollen, or other indicators of post-Ordovician environments were observed.
Conclusions. The peat moss–like fragments described here are the oldest-known vegetative remains of land plants and the oldest fossils having distinctive features linking them to a modern plant group. These findings are consistent with peat moss recalcitrance properties that foster fossilization and molecular evidence that the peat moss lineage is 460–607 Ma of age. The new findings suggest that moss-dominated peatlands—recognized for globally significant roles in modern terrestrial biodiversity and C and N cycling—were present hundreds of millions of years earlier than previously thought
Cause of Death and Predictors of All-Cause Mortality in Anticoagulated Patients With Nonvalvular Atrial Fibrillation : Data From ROCKET AF
M. Kaste on työryhmän ROCKET AF Steering Comm jäsen.Background-Atrial fibrillation is associated with higher mortality. Identification of causes of death and contemporary risk factors for all-cause mortality may guide interventions. Methods and Results-In the Rivaroxaban Once Daily Oral Direct Factor Xa Inhibition Compared with Vitamin K Antagonism for Prevention of Stroke and Embolism Trial in Atrial Fibrillation (ROCKET AF) study, patients with nonvalvular atrial fibrillation were randomized to rivaroxaban or dose-adjusted warfarin. Cox proportional hazards regression with backward elimination identified factors at randomization that were independently associated with all-cause mortality in the 14 171 participants in the intention-to-treat population. The median age was 73 years, and the mean CHADS(2) score was 3.5. Over 1.9 years of median follow-up, 1214 (8.6%) patients died. Kaplan-Meier mortality rates were 4.2% at 1 year and 8.9% at 2 years. The majority of classified deaths (1081) were cardiovascular (72%), whereas only 6% were nonhemorrhagic stroke or systemic embolism. No significant difference in all-cause mortality was observed between the rivaroxaban and warfarin arms (P=0.15). Heart failure (hazard ratio 1.51, 95% CI 1.33-1.70, P= 75 years (hazard ratio 1.69, 95% CI 1.51-1.90, P Conclusions-In a large population of patients anticoagulated for nonvalvular atrial fibrillation, approximate to 7 in 10 deaths were cardiovascular, whereasPeer reviewe
Brillouin light storage for 100 pulse widths
Signal processing based on stimulated Brillouin scattering (SBS) is limited
by the narrow linewidth of the optoacoustic response, which confines many
Brillouin applications to continuous wave signals or optical pulses longer than
several nanoseconds. In this work, we experimentally demonstrate Brillouin
interactions at the 150 ps time scale and a delay for a record 15 ns which
corresponds to a delay of 100 pulse widths. This breakthrough experimental
result was enabled by the high local gain of the chalcogenide waveguides as the
optoacoustic interaction length reduces with pulse width. We successfully
transfer 150ps-long pulses to traveling acoustic waves within a Brillouin-based
memory setup. The information encoded in the optical pulses is stored for 15 ns
in the acoustic field. We show the retrieval of eight amplitude levels,
multiple consecutive pulses and low distortion in pulse shape. The extension of
Brillouin-based storage to the ultra-short pulse regime is an important step
for the realisation of practical Brillouin-based delay lines and other optical
processing applications.Comment: 6 pages, 6 figure
Inhaled pirfenidone solution (AP01) for IPF: a randomised, open-label, dose-response trial
Introduction: Oral pirfenidone reduces lung function decline and mortality in patients with idiopathic pulmonary fibrosis (IPF). Systemic exposure can have significant side effects, including nausea, rash, photosensitivity, weight loss and fatigue. Reduced doses may be suboptimal in slowing disease progression. Methods: This phase 1b, randomised, open-label, dose-response trial at 25 sites in six countries (Australian New Zealand Clinical Trials Registry (ANZCTR) registration number ACTRN12618001838202) assessed safety, tolerability and efficacy of inhaled pirfenidone (AP01) in IPF. Patients diagnosed within 5 years, with forced vital capacity (FVC) 40%-90% predicted, and intolerant, unwilling or ineligible for oral pirfenidone or nintedanib were randomly assigned 1:1 to nebulised AP01 50 mg once per day or 100 mg two times per day for up to 72 weeks. Results: We present results for week 24, the primary endpoint and week 48 for comparability with published trials of antifibrotics. Week 72 data will be reported as a separate analysis pooled with the ongoing open-label extension study. Ninety-one patients (50 mg once per day: n=46, 100 mg two times per day: n=45) were enrolled from May 2019 to April 2020. The most common treatment-related adverse events (frequency, % of patients) were all mild or moderate and included cough (14, 15.4%), rash (11, 12.1%), nausea (8, 8.8%), throat irritation (5, 5.5%), fatigue (4, 4.4%) and taste disorder, dizziness and dyspnoea (three each, 3.3%). Changes in FVC % predicted over 24 and 48 weeks, respectively, were -2.5 (95% CI -5.3 to 0.4, -88 mL) and -4.9 (-7.5 to -2.3,-188 mL) in the 50 mg once per day and 0.6 (-2.2 to 3.4, 10 mL) and -0.4 (-3.2 to 2.3, -34 mL) in the 100 mg two times per day group. Discussion: Side effects commonly associated with oral pirfenidone in other clinical trials were less frequent with AP01. Mean FVC % predicted remained stable in the 100 mg two times per day group. Further study of AP01 is warranted. Trial registration number: ACTRN12618001838202 Australian New Zealand Clinical Trials Registry.</p
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Procedural and Intermediate-term Results of the Electroanatomical-guided Cardioneuroablation for the Treatment of Supra-Hisian Second- or Advanced-degree Atrioventricular Block: the PIRECNA multicentre registry.
AIMS: Prior case series showed promising results for cardioneuroablation in patients with vagally induced atrioventricular blocks (VAVBs). We aimed to examine the acute procedural characteristics and intermediate-term outcomes of electroanatomical-guided cardioneuroablation (EACNA) in patients with VAVB. METHODS AND RESULTS: This international multicentre retrospective registry included data collected from 20 centres. Patients presenting with symptomatic paroxysmal or persistent VAVB were included in the study. All patients underwent EACNA. Procedural success was defined by the acute reversal of atrioventricular blocks (AVBs) and complete abolition of atropine response. The primary outcome was occurrence of syncope and daytime second- or advanced-degree AVB on serial prolonged electrocardiogram monitoring during follow-up. A total of 130 patients underwent EACNA. Acute procedural success was achieved in 96.2% of the cases. During a median follow-up of 300 days (150, 496), the primary outcome occurred in 17/125 (14%) cases with acute procedural success (recurrence of AVB in 9 and new syncope in 8 cases). Operator experience and use of extracardiac vagal stimulation were similar for patients with and without primary outcomes. A history of atrial fibrillation, hypertension, and coronary artery disease was associated with a higher primary outcome occurrence. Only four patients with primary outcome required pacemaker placement during follow-up. CONCLUSION: This is the largest multicentre study demonstrating the feasibility of EACNA with encouraging intermediate-term outcomes in selected patients with VAVB. Studies investigating the effect on burden of daytime symptoms caused by the AVB are required to confirm these findings
Real-time Geoinformation Systems to Improve the Quality, Scalability, and Cost of Internet of Things for Agri-environment Research
With the increasing emphasis on machine learning and artificial intelligence
to drive knowledge discovery in the agricultural sciences, spatial internet of
things (IoT) technologies have become increasingly important for collecting
real-time, high resolution data for these models. However, managing large
fleets of devices while maintaining high data quality remains an ongoing
challenge as scientists iterate from prototype to mature end-to-end
applications. Here, we provide a set of case studies using the framework of
technology readiness levels for an open source spatial IoT system. The spatial
IoT systems underwent 3 major and 14 minor system versions, had over 2,727
devices manufactured both in academic and commercial contexts, and are either
in active or planned deployment across four continents. Our results show the
evolution of a generalizable, open source spatial IoT system designed for
agricultural scientists, and provide a model for academic researchers to
overcome the challenges that exist in going from one-off prototypes to
thousands of internet-connected devices.Comment: 20 pages, 5 figures, 1 tabl
Do Frogs Get Their Kicks on Route 66? Continental U.S. Transect Reveals Spatial and Temporal Patterns of Batrachochytrium dendrobatidis Infection
The chytrid fungus Batrachochytrium dendrobatidis (Bd) has been devastating amphibians globally. Two general scenarios have been proposed for the nature and spread of this pathogen: Bd is an epidemic, spreading as a wave and wiping out individuals, populations, and species in its path; and Bd is endemic, widespread throughout many geographic regions on every continent except Antarctica. To explore these hypotheses, we conducted a transcontinental transect of United States Department of Defense (DoD) installations along U.S. Highway 66 from California to central Illinois, and continuing eastward to the Atlantic Seaboard along U.S. Interstate 64 (in sum from Marine Corps Base Camp Pendleton in California to Naval Air Station Oceana in Virginia). We addressed the following questions: 1) Does Bd occur in amphibian populations on protected DoD environments? 2) Is there a temporal pattern to the presence of Bd? 3) Is there a spatial pattern to the presence of Bd? and 4) In these limited human-traffic areas, is Bd acting as an epidemic (i.e., with evidence of recent introduction and/or die-offs due to chytridiomycosis), or as an endemic (present without clinical signs of disease)? Bd was detected on 13 of the 15 bases sampled. Samples from 30 amphibian species were collected (10% of known United States' species); half (15) tested Bd positive. There was a strong temporal (seasonal) component; in total, 78.5% of all positive samples came in the first (spring/early-summer) sampling period. There was also a strong spatial component—the eleven temperate DoD installations had higher prevalences of Bd infection (20.8%) than the four arid (<60 mm annual precipitation) bases (8.5%). These data support the conclusion that Bd is now widespread, and promote the idea that Bd can today be considered endemic across much of North America, extending from coast-to-coast, with the exception of remote pockets of naïve populations
Grandiose narcissism, unfounded beliefs, and behavioral reactions during the COVID-19 pandemic
A theoretical perspective on grandiose narcissism suggests four forms of it (sanctity, admiration, heroism, rivalry) and states that these forms conduce to different ways of thinking and acting. Guided by this perspective, we examined in a multinational and multicultural study (61 countries; N = 15,039) how narcissism forms are linked to cognitions and behaviors prompted by the COVID-19 pandemic. As expected, differences in cognitions and behaviors across narcissism forms emerged. For example, higher narcissistic rivalry predicted lower likelihood of enactment of COVID-19 prevention behaviors, but higher narcissistic sanctity predicted higher likelihood of enactment of COVID-19 prevention behaviors. Further, whereas the heroism, admiration, and rivalry narcissism forms acted in a typically antisocial manner, with high narcissism predicting greater endorsement of unfounded health beliefs, the sanctity form acted in a prosocial manner, with higher narcissism being linked to lower endorsement of unfounded COVID-19 health beliefs. Thus, the findings (a) support the idea of four narcissism forms acting differently, and (b) show that these differences reflect a double-edged sword, sometimes linking to an anti-social orientation, and sometimes linking to a pro-social orientation.info:eu-repo/semantics/publishedVersio
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