4,131 research outputs found

    Group algebras and enveloping algebras with nonmatrix and semigroup identities

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    Let K be a field of positive characteristic p, let R be either a group algebra K[G] or a restricted enveloping algebra u(L), and let I be the augmentation ideal of R. We first characterize those R for which I satisfies a polynomial identity not satisfied by the algebra of all 2-by-2 matrices over K. Then we examine those R for which I satisfies a semigroup identity (that is, a polynomial identity which can be written as the difference of two monomials).Comment: 11 pages. Written in LaTeX2

    Complete Genome Sequences of Three Staphylococcus pseudintermedius Strains Isolated from Botswana

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    We report here the first whole-genome sequences for 3 strains of Staphylococcus pseudintermedius (112N, 113N, and 114N) isolated in Africa. Samples of this opportunistic pathogen were collected from nasal swabs obtained from healthy carrier dogs in Botswana. The sequence information will facilitate spatial phylogenetic comparisons of staphylococcal species and other bacteria at the genome level

    Closing the Gap: Past Performance of Health Insurance in Reducing Racial and Ethnic Disparities in Access to Care Could Be an Indication of Future Results

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    This historical analysis shows that in the years just prior to the Affordable Care Act's expansion of health insurance coverage, black and Hispanic working-age adults were far more likely than whites to be uninsured, to lack a usual care provider, and to go without needed care because of cost. Among insured adults across all racial and ethnic groups, however, rates of access to a usual provider were much higher, and the proportion of adults going without needed care because of cost was much lower. Disparities between groups were narrower among the insured than the uninsured, even after adjusting for income, age, sex, and health status. With surveys pointing to a decline in uninsured rates among black and Hispanic adults in the past year, particularly in states extending Medicaid eligibility, the ACA's coverage expansions have the potential to reduce, though not eliminate, racial and ethnic disparities in access to care

    Reducing Racial and Ethnic Disparities in Access to Care: Has the Affordable Care Act Made a Difference?

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    Issue: Prior to the Affordable Care Act (ACA), blacks and Hispanics were more likely than whites to face barriers in access to health care.Goal: Assess the effect of the ACA's major coverage expansions on disparities in access to care among adults.Methods: Analysis of nationally representative data from the American Community Survey and the Behavioral Risk Factor Surveillance System.Findings and Conclusions: Between 2013 and 2015, disparities with whites narrowed for blacks and Hispanics on three key access indicators: the percentage of uninsured working-age adults, the percentage who skipped care because of costs, and the percentage who lacked a usual care provider. Disparities were narrower, and the average rate on each of the three indicators for whites, blacks, and Hispanics was lower in both 2013 and 2015 in states that expanded Medicaid under the ACA than in states that did not expand. Among Hispanics, disparities tended to narrow more between 2013 and 2015 in expansion states than nonexpansion states. The ACA's coverage expansions were associated with increased access to care and reduced racial and ethnic disparities in access to care, with generally greater improvements in Medicaid expansion states

    Emergency department diagnosis of upper extremity deep venous thrombosis using bedside ultrasonography

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    A 27-year-old man presents to the emergency department with a 1-day history of severe right upper extremity pain and swelling. The patient's status is post open reduction internal fixation for a left tibial plateau fracture, which was complicated by methicillin-sensitive Staphylococcus aureus osteomyelitis. A peripherally inserted central catheter (PICC) line was subsequently placed for intravenous antibiotic therapy. Emergency department bedside ultrasound examination of both the right axillary vein and subclavian vein near the PICC line tip revealed deep venous thrombosis of both veins. Bedside upper extremity vascular ultrasonography can assist in the rapid diagnosis of upper extremity deep venous thrombosis in the emergency department

    Comparative Recruitment Dynamics of Alewife and Bloater in Lakes Michigan and Huron

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    The predictive power of recruitment models often relies on the identification and quantification of external variables, in addition to stock size. In theory, the identification of climatic, biotic, or demographic influences on reproductive success assists fisheries management by identifying factors that have a direct and reproducible influence on the population dynamics of a target species. More often, models are constructed as one‐time studies of a single population whose results are not revisited when further data become available. Here, we present results from stock recruitment models for Alewife Alosa pseudoharengus and Bloater Coregonus hoyi in Lakes Michigan and Huron. The factors that explain variation in Bloater recruitment were remarkably consistent across populations and with previous studies that found Bloater recruitment to be linked to population demographic patterns in Lake Michigan. Conversely, our models were poor predictors of Alewife recruitment in Lake Huron but did show some agreement with previously published models from Lake Michigan. Overall, our results suggest that external predictors of fish recruitment are difficult to discern using traditional fisheries models, and reproducing the results from previous studies may be difficult particularly at low population sizes.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/141414/1/tafs0294.pd

    Emergency department diagnosis of a quadriceps intramuscular loculated abscess/pyomyositis using dynamic compression bedside ultrasonography

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    Introduction: A 73-year-old man with a past medical history of myelodysplastic syndrome and recent chemotherapy presented to the emergency department with a 1-week history of progressively increasing left thigh pain and swelling. His physical examination revealed left anterolateral diffuse thigh swelling with no erythema or warmth to palpation. The anterolateral quadriceps was markedly tender to palpation. Emergency department bedside dynamic compression ultrasonography that was performed on the left anterolateral thigh revealed a quadriceps intramuscular abscess with loculated yet movable pus. Conclusion: Bedside dynamic compression ultrasonography can assist the emergency or critical care physician in the diagnosis of quadriceps intramuscular abscess or pyomyositis
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