5,834 research outputs found

    A new Oligocene hyrax from the Jebel el Qatrani formation, Fayum, Egypt

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    A fossil hyrax from the Upper Fossil Wood Zone, Jebel el Qatrani formation is described. It represents a new genus and species Thyrohyrax domorictus. The type specimen as well as two referred specimens exhibit an internal mandibular fenestra whereas four referred mandibular fragments do not. One nearly complete mandible with an internal mandibular fenestra has extremely inflated horizontal rami which enclose swollen ovoid chambers opening at the fenestra. This inflated ramus, which is believed to be unique among all mammals, and the internal mandibular fenestra are thought to be sexual characters. Evidence from other genera of the Saghatheriinae suggests these characters are found in females; not in males

    You\u27ll Find Old Dixieland In France

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    https://digitalcommons.library.umaine.edu/mmb-vp/2809/thumbnail.jp

    If He Can Fight Like He Can Love, Good Night Germany!

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    https://digitalcommons.library.umaine.edu/mmb-vp/5623/thumbnail.jp

    Vegetative and Climatic Controls on Holocene Wildfire and Erosion Recorded in Alluvial Fans of the Middle Fork Salmon River, Idaho

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    The Middle Fork Salmon River watershed spans high-elevation mixed-conifer forests to lower-elevation shrub-steppe. In recent decades, runoff from severely burned hillslopes has generated large debris flows in steep tributary drainages. These flows incised alluvial fans along the mainstem river, where charcoal-rich debris-flow and sheetflood deposits preserve a record of latest Pleistocene to Holocene fires and geomorphic response. Through deposit sedimentology and 14C dating of charcoal, we evaluate the processes and timing of fire-related sedimentation and the role of climate and vegetation change. Fire-related deposits compose ~66% of the total measured fan deposit thickness in more densely forested upper basins versus ~33% in shrub-steppe-dominated lower basins. Fires during the middle Holocene (~8000 - 5000 cal yr BP) mostly resulted in sheetflood deposition, similar to modern events in lower basins. Decreased vegetation density during this generally warmer and drier period likely resulted in lower-severity fires and more frequent but smaller fire-related sedimentation events. In contrast, thick fire-related debris-flow deposits of latest Pleistocene-early Holocene (~13,500-8000 cal yr BP) and late Holocene (\u3c 4000 cal yr BP) age are inferred to represent higher-severity fires, though data in the former period are limited. Widespread fires occurred in both upper and lower basins within the Medieval Climatic Anomaly (1050-650 cal yr BP) and the early Little Ice Age ca. 550 cal yr BP. We conclude that a generally cooler late Holocene climate and a shift to denser lodgepole pine forests in upper basins by ~2500 cal yr BP provided fuel for severe fires during episodic droughts

    In The Land Of Beginning Again : Where Broken Dreams Come True

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    https://digitalcommons.library.umaine.edu/mmb-vp/3212/thumbnail.jp

    Stress Effects During In-Person and Online Simulated Interviews

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    An interview simulation was created to assess the differences of stress experienced by interviewees between in-person and online interviews. As online interviews rise, itā€™s important to discover how they differ from in-person. What are the differences between these two and how can they affect the interviewee? Three in-person and three virtual job interviews were conducted. Each interview included five trigger events that the participants had to react to. These consisted of invasive questions, an interruption, an acting task, and whether they got the job. There were four forms of measurement: a post interview survey, body language observation, a pulse tracker, and a filler word counter. There were no significant differences between in person and virtual stress levels. However, there were significant differences in reaction score between those who received the job and those who did not as well as a significantly higher heartrate of the participants 1 minute into the acting trigger event vs. before it. These results speak to the fidelity of the interview and how the reactions of participants can be real despite the interview being a simulation. Future research could validate or explore the topic with a higher number of participants

    A Research Note on Multinationality and Firm Performance: Nonparametric Frontier Analysis

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    This study provides a fresh insight into the examination of the comparison between multinationality and firm performance, measured through technical efficiency levels by overcoming methodological constraints and misunderstandings presented in earlier research. We estimate firmsā€™ efficiency levels in a production function-type framework through technical efficiency levels using nonparametric data envelopment analysis (DEA). We include firms from both developed and developing economies, from different national origins and with different sectoral characteristics, with a particular focus on knowledge-intensive business services (KIBS) and capital-intensive business services (CIBS). The study confirms for the case of KIBS the existence of the three-stage sigmoid (S-shaped) hypothesis between multinationality and firm performance measured through technical efficiency levels. Finally, the empirical findings reveal that CIBS exhibit only the first two stages, thus forming a ā€˜Uā€™-shape relationship. We propose the application of different firmsā€™ performance measurements, providing us with the ability to unpack a firmsā€™ managerial decision processes with regards to determining the optimised investment(s) in technology and research and development and with a particular focus on knowledge-intensive business services (KIBS) and capital-intensive business services (CIBS)

    A new nanocrystalline diamond-based biosensor for the detection of cardiovascular risk markers

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    In this paper, a new method to probe associative interactions of C-reactive protein (CRP) antigen with CRP antibody immobilized on a gold-interdigitated diamond electrodes was investigated. The CRP antigen detection was performed by capacitive/dielectric-constant measurements. Our results showed that the dynamic detection range using optimized conditions for a given antibody concentration (100 Ī¼g/ml) was found to be in the range 25-800 ng/ml of CRP-antigen. Biosensor developed in this study can be potentially used for detection of elevated CRP levels in suspected subjects for early diagnosis
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