480 research outputs found

    Attosekunden-zeitaufgelöste Streaking-Spektroskopie an dem Schichtkristall Bi2Te3 und an den unterschiedlichen Oberflächen des nicht-zentrosymmetrischen Schichtkristalls BiTeCl

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    Neb S. Attosekunden-zeitaufgelöste Streaking-Spektroskopie an dem Schichtkristall Bi2Te3 und an den unterschiedlichen Oberflächen des nicht-zentrosymmetrischen Schichtkristalls BiTeCl. Bielefeld: Universität Bielefeld; 2018

    Use of Attentional Focus in a Rehabilitation Setting: A Comparison of Theoretical Frameworks and Clinical Practice

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    Information provided by a therapist is an important for motor learning. Instinctively, therapists refer to body positioning, creating an internal focus of attention (IFOA. Literature suggests, statements directing attention away from specific body movements, known as external focus of attention (EFOA), are most effective for motor learning. Little is known about how EFOA statements in a clinical setting compare to suggestions in literature, or whether therapists have an understanding of how to use it in rehabilitation programs. To determine this, appointments of 15 therapists were observed, and a therapist perception questionnaire was administered. Findings indicate, IFOA statements (262) are used more frequently than EFOA statements (70). When other factors are considered (i.e., task type) communications more closely reflect literature\u27s suggestions. Therapist perception questionnaires highlight a discrepancy between therapists\u27 perceptions and what was actually presented. The majority of therapists had limited understanding of attentional focus as a clinical motor learning tool

    Smart Airport App

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    We are going to make an app that can be used by people traveling through or from ORD airport (Chicago), which will provide live time update for security check line (in terms of time), change of gate for the flight and whether or not the flight is on time. The reason for developing this application is to simplify and improve the passenger’s overall airport experience in order to make it more enjoyable, informative, and time efficient while decreasing the current negative mentality towards traveling. Resources needed to create the prototype would include softwares that help in creating wireframes of the applications like Balsamiq and app developing softwares like Android studio and Xcode. The anticipated beneficiaries of this project would be the consumers that are being provided a smoother airport experience, as well as the airport operators who will be able to provide a better service to the customers with the data collected. An expected result of this app is that fewer passengers will miss their flights; by focusing on waiting times, flight schedules, flight locations, and other airport operations, it can be assumed that users of this app will have more control in the travel process and therefore will make educated decisions based on real time data to make their flight on time. The constraints for this app will be that it is only available on Android-OS compatible phones. Only O’Hare International Airport in Chicago, Illinois will be functional at the time of app release while the team learns about the learning capabilities of the ap

    Bedeutung von SWEET-Genen fĂĽr den pflanzlichen Zuckerexport in einer Ektomykorrhizasymbiose

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    In mutualsitic interactions between fungi and plants, such as ectomycorrhiza, the fungus contributes nutrition and obtains plant derived carbohydrates as a response. The carbohydrate transport in ectomycorrhized roots is not yet fully understood and requires additional investigations. However prerequisites for such analysis are transgenic plants. Poplar is a well established model for investigation of ectomycorrhizal symbiosis. As the generation of transgenic poplar plants is a highly time consuming process and can take up to one year a new A. rhizogenes- based transformation protocol was developed in the present thesis. Furthermore, the role of the recently discovered SWEET-proteins in the carbohydrate transport in ectomycorrhiza was investigated. Ectomycorrhiza regulated SWEET proteins were localized in the plasma membrane of Nicotiana benthamiana leaves determining their role in the carbohydrate supply of the fungal partner in ectomycorrhiza. Additionally a promoter analysis of one of the mycorrhiza-induced SWEET genes, PtSWEET 1.c, was performed and two regulatory regions could be identified. However, an ectomycorrhiza specific regulation of the promoter reporter constructs was not observed

    Midwestern-Northcentral Regional Rabies Conference, Omaha, Nebraska, May 21-22, 1951

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    Edited by James H. Steele.Recommendations: WHEREAS, rabies has become established and appears to be spreading through the upper Mississippi and Missouri Valleys and so constitutes a serious threat to human health, agricultural economy, and wildlife resources of this area, representatives of the affected States and the personnel' of responsible Federal agencies met at Omaha, Nebraska, on May 21-22, 1951, and in closing agreed as follows: 1. That each of the affected States inaugurate coordinated programs for the control of rabies; that each State's program can most effectively be carried out through the creation of a committee composed of representatives from those agencies at the State level responsible for public health, livestock disease control, and wildlife conservation; 2. That each State arrange for adequate diagnostic facilities, and that reports of rabies cases in animals be collected by an approved State agency, and that the State health officer include these data in the weekly telegraphic reports to the U. S. Public Health Service; 3. That the epizootiology of rabies in wildlife is inadequately understood, and to urge that investigation of this subject be made to provide information necessary for the intelligent and effective control of this disease; 4. That technical assistance and guidance is available from the U. S. Public Health Service of the Federal Security Agency, the Fish and Wildlife Service of the Department of the Interior, and the Bureau of Animal Industry of the U. S. Department of Agriculture

    Ultrafast electron localization and screening in a transition metal dichalcogenide

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    The coupling of light to electrical charge carriers in semiconductors is the foundation of many technological applications. Attosecond transient absorption spectroscopy measures simultaneously how excited electrons and the vacancies they leave behind dynamically react to the applied optical fields. In compound semiconductors, these dynamics can be probed via any of their atomic constituents. Often, the atomic species forming the compound contribute comparably to the relevant electronic properties of the material. One therefore expects to observe similar dynamics, irrespective of the choice of atomic species via which it is probed. Here, we show in the two-dimensional transition metal dichalcogenide semiconductor MoSe2, that through a selenium-based transition we observe charge carriers acting independently from each other, while when probed through molybdenum, the collective, many-body motion of the carriers dominates. Such unexpectedly contrasting behavior can be traced back to a strong localization of electrons around molybdenum atoms following absorption of light, which modifies the local fields acting on the carriers. We show that similar behavior in elemental titanium metal carries over to transition metal-containing compounds and is expected to play an essential role for a wide range of such materials. Knowledge of independent particle and collective response is essential for fully understanding these materials

    Hype Cycle Assessment Of Emerging Technologies For Battery Production

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    The demand for battery-powered electric vehicles is growing rapidly as more and more OEMs are shifting their strategy towards an all-electric vehicle fleet. The lithium-ion battery cell is considered as the core component in terms of performance, range and price of electric vehicles. Since the development of the functional principle of the lithium-ion battery, both the product and the associated production technology have evolved significantly. OEMs, start-ups, equipment suppliers and other players in the automotive industry are investing heavily in research and development of various technologies to improve both the battery as a product and its production. An essential aspect is to enable sustainable battery production. While breakthroughs in battery technology are regularly announced, the actual merits of the technologies and the potential remain uncertain until commercial deployment. The aim of this paper is to systematically identify upcoming breakthroughs and announced innovations to provide an overview of promising battery technologies that companies should focus on to enable the planning of resilient and sustainable production systems. Hence, a hype cycle assessment following Gartner was adopted as the underlying approach to evaluate battery technologies for deployment in electromobility and mass production. First, various technologies, innovations, research activities and announcements in the field of battery technologies were screened, recorded and classified in order to obtain an overview of the current state of developments on both product and production levels. This includes an overview of innovations in battery design and configuration as well as process technologies and production systems. Subsequently, these technologies are evaluated according to predefined evaluation criteria in order to enable a systematic classification of the individual technologies in the hype cycle. The result is a consolidated overview of emerging battery technologies for sustainable battery production and a display for further recommendations for relevant companies and stakeholders
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