55 research outputs found

    Construction Management Technology Students Choice of Major

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    This study explores the following research questions: 1) What are the common attributes of college students that decide to pursue CM degrees; and, 2) What key motivational drivers that encourage students to remain in STEM majors? The study population considered were those students enrolled in CM undergraduate degree program in the United States (US). Over 100 students participated in an online survey to assess their backgrounds and experiences. Results illustrate early career decisions and other underlying motives shape students’ decisions to pursue CM undergraduate degree programs. Key drivers such as family background, personal interests, and role models/mentors are related to CM degree program and CM career choices. This study helps inform a broader narrative around STEM education and offers clues for organizations that are often trying to attract and retain a more diverse student body in STEM fields

    Contribution of Social Isolation, Restraint, and Hindlimb Unloading to Changes in Hemodynamic Parameters and Motion Activity in Rats

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    The most accepted animal model for simulation of the physiological and morphological consequences of microgravity on the cardiovascular system is one of head-down hindlimb unloading. Experimental conditions surrounding this model include not only head-down tilting of rats, but also social and restraint stresses that have their own influences on cardiovascular system function. Here, we studied levels of spontaneous locomotor activity, blood pressure, and heart rate during 14 days under the following experimental conditions: cage control, social isolation in standard rat housing, social isolation in special cages for hindlimb unloading, horizontal attachment (restraint), and head-down hindlimb unloading. General activity and hemodynamic parameters were continuously monitored in conscious rats by telemetry. Heart rate and blood pressure were both evaluated during treadmill running to reveal cardiovascular deconditioning development as a result of unloading. The main findings of our work are that: social isolation and restraint induced persistent physical inactivity, while unloading in rats resulted in initial inactivity followed by normalization and increased locomotion after one week. Moreover, 14 days of hindlimb unloading showed significant elevation of blood pressure and slight elevation of heart rate. Hemodynamic changes in isolated and restrained rats largely reproduced the trends observed during unloading. Finally, we detected no augmentation of tachycardia during moderate exercise in rats after 14 days of unloading. Thus, we concluded that both social isolation and restraint, as an integral part of the model conditions, contribute essentially to cardiovascular reactions during head-down hindlimb unloading, compared to the little changes in the hydrostatic gradient

    Complexity of Age-Related Change in Skeletal Muscle

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    Neurogenic and humoral factors maintaining arterial pressure in conscious dogs

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    Interaction of vasopressin and opioids during rapid hemorrhage in conscious rabbits

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    Sympathoinhibition and its reversal by naloxone during hemorrhage

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    Area postrema voltage-activated calcium currents

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