3,601 research outputs found
What Missouri Thinks: An Examination of Public Attitudes
Political observers often refer to Missouri as a “bellwether” state, suggesting that the political and social attitudes of Missourians tend to reflect those of the rest of the United States. (Robertson, 2004). To better understand the opinions of Missourians on a set of important political, economic, and social issues, researchers at the Harry S Truman School of Public Affairs examined results from the 2008 Cooperative Congressional Election Survey (CCES). This nationally-representative public opinion survey included a sample of 817 Missouri residents. In this report, we explore the attitudes of Missourians to examine how they differ from the rest of the nation and how they vary within the state. Given the demographic patterns of Missouri, we are particularly interested in potential differences in attitudes between residents living in urban and rural areas (see Appendix A for additional discussion.) Overall, we find that Missouri residents shared similar attitudes on major economic, social and military issues with the rest of the nation, but we also find that rural and urban Missourians held distinctly different opinions on these same issues. These differences in opinion are likely driven by factors such as partisan identification, political ideology, education, and other socioeconomic attributes.Includes bibliographical reference
Hydrogeology and drilling phase 1 for Scott Creek catchment
Scott Creek Catchment is the first of a number of catchments that will be used as case studies to investigate the sustainability of groundwater resources in the Mount Lofty Ranges over the next 45 years. This report provides a collation of background information for the Scott Creek Catchment including geological, hydrological, meteorological and surface water quality data. Site selection criteria, drilling methods, construction details and lithological logs are presented for the first phase of drilling in this catchment. A total of nine wells (one completed in the Quaternary alluvium and eight in the fractured Woolshed Flat Shale) were drilled at strategic locations on either side of Scott Creek upstream of the weir at Scott Bottom. These wells will be used for a variety of hydraulic and hydrochemical tests to define the local hydrogeology in terms of streamaquifer interactions and groundwater recharge and flow rates.repor
Evaluating the Efficacy of Vertebral Axial Decompression Therapy in Treatment of Patients with Chronic Lower Back Pain: A Systematic Review
The primary objective of the study was to explore the effectiveness of Vertebral Axial Decompression (VAX-D) in treating patients with chronic low back pain (CLBP) as a safe and competent therapeutic method. Also, to determine the quality of life in alleviating chronic lumbar pain using mechanical Lumbar traction force applied to the lumbar spine. A systematic review and meta-analysis involving detailed literature survey on Vertebral Axial Decompression (VAX-D) therapy for patients with chronic low back pain were conducted in three databases namely MEDLINE, EMBASE and Cochrane Library from (January 1994 to February 2019). Studies supporting the outcomes with qualitative statistical analysis on chronic low back pain and Lumbar traction were retrieved. We retrieved sixteen randomized controlled trials (RCTs) for systematic review, and 6 studies were found to be eligible for inclusion in meta-analysis with a sample size of 486 patients receiving Lumbar traction. Among them, one study was found to be high quality that detailed the positive relationship between reduction of pain intensity after VAX-D therapy. However, most of the studies are unsuccessful in demonstrating an improvement towards the patient\u27s mobility or quality of life. There is no reliable indication of the efficacy of VAX-D therapy for chronic low back pain patients. Studies on VAX-D had methodological errors and inadequate data for profound statistical analysis. Further, there was no evidence to show the dosage requirement, patient position, and settings on the VAX-D table that led to observed outcomes. Any prospect of research focusing on LBP morbidity should enable to distinguish between symptom duration and pattern with accurate standard methods. Therefore, more studies validating the effective treatment strategies in the management of patients with chronic low back pain are warranted
Cellular Models of Aggregation-Dependent Template-Directed Proteolysis to Characterize Tau Aggregation Inhibitors for Treatment of Alzheimer's Disease
Copyright © 2015, The American Society for Biochemistry and Molecular Biology. Acknowledgements-We thank Drs Timo Rager and Rolf Hilfiker (Solvias, Switzerland) for polymorph analyses.Peer reviewedPublisher PD
The Solar-System-Scale Disk Around AB Aurigae
The young star AB Aurigae is surrounded by a complex combination of gas-rich
and dust dominated structures. The inner disk which has not been studied
previously at sufficient resolution and imaging dynamic range seems to contain
very little gas inside a radius of least 130 astronomical units (AU) from the
star. Using adaptive-optics coronagraphy and polarimetry we have imaged the
dust in an annulus between 43 and 302 AU from the star, a region never seen
before. An azimuthal gap in an annulus of dust at a radius of 102 AU, along
with a clearing at closer radii inside this annulus, suggests the formation of
at least one small body at an orbital distance of about 100 AU. This structure
seems consistent with crude models of mean motion resonances, or accumulation
of material at two of the Lagrange points relative to the putative object and
the star. We also report a low significance detection of a point source in this
outer annulus of dust. This source may be an overdensity in the disk due to
dust accreting onto an unseen companion. An alternate interpretation suggests
that the object's mass is between 5 and 37 times the mass of Jupiter. The
results have implications for circumstellar disk dynamics and planet formation.Comment: 11 pages, 5 figures, accepted for publication in Astrophysical
Journal, V. 680, June 10, 200
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Building visualization skills through investigating the Journal of the Medical Library Association coauthorship network from 2006–2017
Objective: The primary objective of this study was to explore different dimensions of Journal of the Medical Library Association (JMLA) authorship from 2006-2017. Dimensions that were evaluated using coauthorship networks and affiliation data included collaboration, geographical reach, and relationship between Medical Library Association (MLA) member and nonmember authors. A secondary objective was to analyze the practice and practical application of data science skills.
Methods: A team of librarians who attended the 2017 Data Science and Visualization Institute used JMLA bibliographic metadata extracted from Scopus, together with select MLA membership data from 2006-2017. Data cleaning, anonymization, analysis, and visualization were done collaboratively by the team members to meet their learning objectives and to produce insights about the nature of collaborative authorship at JMLA.
Results: Sixty-nine percent of the 1,351 JMLA authors from 2006-2017 were not MLA members. MLA members were more productive and collaborative, and tended to author articles together. The majority of the authoring institutions in JMLA are based in the United States. Global reach outside of the United States and Canada shows higher authorship in English-speaking countries (e.g., Australia, United Kingdom), as well as in Western Europe and Japan.
Conclusions: MLA support of JMLA may benefit a wider network of health information specialists and medical professionals than is reflected in MLA membership. Conducting coauthorship network analyses can create opportunities for health sciences librarians to practice applying emerging data science and data visualization skills
The Pic Protease of Enteroaggregative \u3cem\u3eEscherichia coli\u3c/em\u3e Promotes Intestinal Colonization and Growth in the Presence of Mucin
Enteroaggregative Escherichia coli (EAEC) is increasingly being recognized as a cause of diarrheal disease in diverse populations. No small animal model is currently available to study this pathogen. We report here that conventional mice orally inoculated with prototype EAEC strain 042 generally became colonized, though the abundance of organisms cultured from their stool varied substantially among individual animals. In contrast, mice whose water contained 5 g/liter streptomycin consistently became colonized at high levels (ca. 108 CFU/g of stool). Neither conventional nor streptomycin-treated mice developed clinical signs or histopathologic abnormalities. Using specific mutants in competition with the wild-type strain, we evaluated the contribution of several putative EAEC virulence factors to colonization of streptomycin-treated mice. Our data suggest that the dispersin surface protein and Pic, a serine protease autotransporter secreted by EAEC and Shigella flexneri, promote colonization of the mouse. In contrast, we found no role for the aggregative adherence fimbriae, the transcriptional activator AggR, or the surface factor termed Air (enteroaggregative immunoglobulin repeat protein). To study Pic further, we constructed a single nucleotide mutation in strain 042 which altered only the Pic catalytic serine (strain 042PicS258A). Fractionation of the tissue at 24 h and 3 days demonstrated an approximate 3-log10 difference between 042 and 042PicS258A in the lumen and mucus layer and adherent to tissue. Strains 042 and 042PicS258A adhered similarly to mouse tissue ex vivo. While no growth differences were observed in a continuous-flow anaerobic intestinal simulator system, the wild-type strain exhibited a growth advantage over 042PicS258A in a culture of cecal mucus and in cecal contents in vitro; this difference was manifest only after 6 h of growth. Moreover, enhanced growth of the wild type was observed in comparison with that of the mutant in minimal medium containing mucin but not in the absence of mucin. The data suggest a novel metabolic role for the Pic mucinase in EAEC colonization
Validation of a Metallomics Analysis of Placenta Tissue by Inductively-Coupled Plasma Mass Spectrometry
Trace elements can play an important role in maternal health and fetal development, and deficiencies in some essential minerals including zinc and copper have been correlated in some individuals to the development of birth defects and adverse health outcomes later in life. The exact etiology of conditions like preeclampsia and the effects of fetal exposure to toxic metals has not been determined, making the assessment of trace element levels crucial to the elucidation of the causes of conditions like preeclampsia. Previous studies analyzing serum and placenta tissue have produced conflicting findings, suggesting the need for a robust, validated sample preparation and analysis method for the determination of trace elements in placenta. In this report, an acid digestion method and analysis by ICP-MS for a broad metallomics/mineralomics panel of trace elements is developed and validated over three experimental days for inter- and intraday precision and accuracy, linear range, matrix impact, and dilution verification. Spike recovery experiments were performed for the essential elements chromium (Cr), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), and zinc (Zn), and the toxic elements arsenic (As), cadmium (Cd), and lead (Pb) at levels equal to and in excess of native concentrations in control placenta tissue. The validated method will be essential for the development of scientific studies of maternal health and toxic metal exposure effects in childhood
Clinical outcomes after detection of elevated cardiac enzymes in patients undergoing percutaneous intervention
AbstractObjectives. We examined the relations of elevated creatine kinase (CK) and its myocardial band isoenzyme (CK-MB) to clinical outcomes after percutaneous coronary intervention (PCI) in patients enrolled in Integrilin (eptifibatide) to Minimize Platelet Aggregation and Coronary Thrombosis-II (trial) (IMPACT-II), a trial of the platelet glycoprotein IIb/IIIa inhibitor eptifibatide.Background. Elevation of cardiac enzymes often occurs after PCI, but its clinical implications are uncertain.Methods. Patients undergoing elective, scheduled PCI for any indication were analyzed. Parallel analyses investigated CK (n = 3,535) and CK-MB (n = 2,341) levels after PCI (within 4 to 20 h). Clinical outcomes at 30 days and 6 months were stratified by postprocedure CK and CK-MB (multiple of the site’s upper normal limit).Results. Overall, 1,779 patients (76%) had no CK-MB elevation; CK-MB levels were elevated to 1 to 3 times the upper normal limit in 323 patients (13.8%), to 3 to 5 times normal in 84 (3.6%), to 5 to 10 times normal in 86 (3.7%), and to >10 times normal in 69 patients (2.9%). Elevated CK-MB was associated with an increased risk of death, reinfarction, or emergency revascularization at 30 days, and of death, reinfarction, or surgical revascularization at 6 months. Elevated total CK to above three times normal was less frequent, but its prognostic significance paralleled that seen for CK-MB. The degree of risk correlated with the rise in CK or CK-MB, even for patients with successful procedures not complicated by abrupt closure.Conclusions. Elevations in cardiac enzymes, including small increases (between one and three times normal) often not considered an infarction, are associated with an increased risk for short-term adverse clinical outcomes after successful or unsuccessful PCI
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