7,628 research outputs found

    WHO YOU KNOW AND HOW TO GO: THE IMPACT OF SOCIAL CAPITAL ON HIGHER EDUCATION ACCESS FOR BLACK MALES

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    This qualitative case study explores the relationship between social capital, or the social networks in a young man’s life, and access into and persistence in higher education for a group of six Black, male, upperclassmen students at Heartland University. Heartland University is a predominantly White, four-year institution in the Midwest region of the United States. The literature review discusses reasons for the steadily declining rate of males choosing to pursue a college education, particularly young Black men, whom have been referred to as an “endangered species” in society (Johnson, Farrell, & Stoloff, 2000). Providing a framework of social capital theory, the author asserts that social networks have powerful implications for the educational attainment of Black male college students. Through a semi-structured interview protocol, qualitative interviews were conducted with six junior and senior Black, male Heartland University students. Students were able to share stories on the relationships in their lives that helped them to pursue, access, and succeed in higher education. Findings indicated the students’ relationships with their parents, family members, and friends were essential in the college decision-making process, relationships with high school teachers were crucial in gaining insight about accessing higher education, and college administrators and college friends were necessary to persisting in college. This research provides a model for Heartland University to promote higher levels of social capital for Black male students via their connections with administrators, faculty members, and peers, offering recommendations for future research and best practices in higher education student affairs. Advisor: Brent Cejd

    Introduction: Ruling "Climates" in the Early Modern World

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    Introduction to Sara Miglietti and John Morgan (eds). Governing the Environment in the Early Modern World: Theory and Practice. Abingdon and New York: Routledge, 201

    Purification, growth, and characterization of Zn(x)Cd(1-x)Se crystals

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    The purification of starting materials which were used in the growth of Zn(x)Cd(1-x)Se (x = 0.2) single crystals using the traveling solution method (TSM) is reported. Up to 13 cm long single crystals and as grown resistivities of 6 x 10(exp 12) ohm/cm could be achieved. Infrared and Raman spectra of Zn(0.2)Cd(0.8)Se are also presented and discussed

    Biomass for thermochemical conversion: targets and challenges

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    Includes bibliographical references (pages 13-20).Bioenergy will be one component of a suite of alternatives to fossil fuels. Effective conversion of biomass to energy will require the careful pairing of advanced conversion technologies with biomass feedstocks optimized for the purpose. Lignocellulosic biomass can be converted to useful energy products via two distinct pathways: enzymatic or thermochemical conversion. The thermochemical pathways are reviewed and potential biotechnology or breeding targets to improve feedstocks for pyrolysis, gasification, and combustion are identified. Biomass traits influencing the effectiveness of the thermochemical process (cell wall composition, mineral and moisture content) differ from those important for enzymatic conversion and so properties are discussed in the language of biologists (biochemical analysis) as well as that of engineers (proximate and ultimate analysis). We discuss the genetic control, potential environmental influence, and consequences of modification of these traits. Improving feedstocks for thermochemical conversion can be accomplished by the optimization of lignin levels, and the reduction of ash and moisture content. We suggest that ultimate analysis and associated properties such as H:C, O:C, and heating value might be more amenable than traditional biochemical analysis to the high-throughput necessary for the phenotyping of large plant populations. Expanding our knowledge of these biomass traits will play a critical role in the utilization of biomass for energy production globally, and add to our understanding of how plants tailor their composition with their environment.Published with support from the Colorado State University Libraries Open Access Research and Scholarship Fund

    Effects of calcium channel blockers on coronary vasoconstriction induced by endothelin-1 in closed chest pigs

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    AbstractThe purpose of this study was to determine the effects of endothelin-1 on the coronary vascular bed of closed chest pigs. Endothelin-1 (3 to 30 pmol/kg body weight) was selectively administered into the left anterior descending coronary artery. Coronary blood flow and epicardial vessel diameter were measured by quantitative arteriography. Arterial pressure increased after a 30 pmol/kg dose and heart rate was not changed.Coronary blood flow and vessel diameter of the left anterior descending artery significantly decreased by 74% and 32%, respectively (p < 0.01 versus control) after the 30 pmol/kg dose, whereas these variables modestly decreased in the left circumflex artery. Endothelin-1 in doses of 10 to 30 pmol/kg produced electrocardiographic ST segment elevation associated with decreased oxygen saturation of coronary sinus venous blood. Endothelin-induced coronary vasoconstriction was significantly inhibited after treatment with intravenous diltiazem (0.2 mg/kg, n = 6) or nifedipine (0.1 mg/kg, n = 5), but not after vehicle administration (n = 4).This study demonstrates that intracoronary administration of endothelin-1 causes significant myocardial ischemia through coronary vasoconstriction, which is inhibited by a calcium channel blocker. The data suggest that calcium influx into the smooth muscle cells appears to be involved at least in part in the mechanism of endothelin-induced coronary vasoconstriction in vivo

    Accelerator performance analysis of the Fermilab Muon Campus

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    Fermilab is dedicated to hosting world-class experiments in search of new physics that will operate in the coming years. The Muon g-2 Experiment is one such experiment that will determine with unprecedented precision the muon anomalous magnetic moment, which offers an important test of the Standard Model. We describe in this study the accelerator facility that will deliver a muon beam to this experiment. We first present the lattice design that allows for efficient capture, transport, and delivery of polarized muon beams. We then numerically examine its performance by simulating pion production in the target, muon collection by the downstream beam line optics, as well as transport of muon polarization. We finally establish the conditions required for the safe removal of unwanted secondary particles that minimizes contamination of the final beam.Comment: 10 p

    A bibliography of publications by Albert Bates Lord

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    Note: [at time of printing] All items listed here can be found in Ellis Library at the University of Missouri, Columbia, either in Special Collections (Ellis 401) or in open stacks (see the affixed call numbers below). Many journals are available online to University of Missouri faculty, staff, and students, and of course through other institutions as well. A full collection of article-length items is maintained in hard copy and on CD in Special Collections
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