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  • 1
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1984-06-15
    Description: The obituary for William A. Altemeier, Jr. (4 May, p. 525), was incorrect. Dr. Altemeier was chairman of the Department of Surgery at the University of Cincinnati.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alexander, A D -- New York, N.Y. -- Science. 1984 Jun 15;224(4654):1158.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6729449" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Laboratory/*microbiology ; Dogs ; Humans ; Leptospira ; Leptospirosis/*microbiology/transmission ; Mice ; Mice, Inbred ICR ; Primates ; Rats
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2018-08-02
    Description: Complex behaviors demand temporal coordination among functionally distinct brain regions. The basal forebrain’s afferent and efferent structure suggests a capacity for mediating this coordination at a large scale. During performance of a spatial orientation task, synaptic activity in this region was dominated by four amplitude-independent oscillations temporally organized by the phase of the slowest, a theta-frequency rhythm. Oscillation amplitudes were also organized by task epoch and positively correlated to the task-related modulation of individual neuron firing rates. For many neurons, spiking was temporally organized through phase precession against theta band field potential oscillations. Theta phase precession advanced in parallel to task progression, rather than absolute spatial location or time. Together, the findings reveal a process by which associative brain regions can integrate independent oscillatory inputs and transform them into sequence-specific, rate-coded outputs that are adaptive to the pace with which organisms interact with their environment.
    Electronic ISSN: 2375-2548
    Topics: Natural Sciences in General
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  • 3
    Publication Date: 1984-06-15
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
    Publication Date: 2019-06-27
    Description: Future aircraft fuels are evaluated in terms of fuel resource availability and pricing, processing methods, and economic projections over the period 1970-2000. Liquefied hydrogen, methane and propane are examined as potential turbine engine aircraft fuels relative to current JP fuel.
    Keywords: PROPELLANTS
    Type: NASA-TM-X-62180
    Format: application/pdf
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  • 5
    Publication Date: 2019-06-27
    Description: Recent technology assessment studies sponsored by NASA are reviewed, and a summary of the technical results as well as a critique of the methodologies are presented. The reviews include Assessment of Lighter-Than-Air Technology, Technology Assessment of Portable Energy RDT&P, Technology Assessment of Future Intercity Passenger Transportation Systems, and Technology Assessment of Space Disposal of Radioactive Nuclear Waste. The use of workshops has been introduced as a unique element of some of these assessments. Also included in this report is a brief synopsis of a method of quantifying opinions obtained through such group interactions. Representative of the current technology assessments, these studies cover a broad range of socio-political factors and issues in greater depth than previously considered in NASA sponsored studies. In addition to the lessons learned through the conduct of these studies, a few suggestions for improving the effectiveness of future technology assessments are provided.
    Keywords: URBAN TECHNOLOGY AND TRANSPORTATION
    Type: NASA-TM-78472 , A-7410
    Format: application/pdf
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  • 6
    Publication Date: 2019-06-27
    Description: The United States transportation fuel economics in terms of fuel resources options, processing alternatives, and attendant economics for the period 1975 to 1995 are evaluated. The U.S. energy resource base is reviewed, portable fuel-processing alternatives are assessed, and selected future aircraft fuel options - JP fuel, liquid methane, and liquid hydrogen - are evaluated economically. Primary emphasis is placed on evaluating future aircraft fuel options and economics to provide guidance for future strategy of NASA in the development of aviation and air transportation research and technology.
    Keywords: ECONOMICS AND COST ANALYSIS
    Type: NASA-TM-X-3197 , A-5878
    Format: application/pdf
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  • 7
    Publication Date: 2019-07-13
    Description: Survey of the current status and major R&D needs of remote systems technology in the medical, mining, and oceanographic areas of application. The review is limited to the most important teleoperator/robotic subsystems, including actuators, sensors, control and communication devices.
    Keywords: FACILITIES, RESEARCH, AND SUPPORT
    Type: National Conference on Remotely manned systems: Exploration and operation in space; Sep 13, 1972 - Sep 15, 1972; Pasadena, CA
    Format: text
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  • 8
    Publication Date: 2019-06-27
    Description: The technologies and systems required to establish the mining base, mine, refine, and return lunar resources to earth are discussed. Gross equipment requirements, their weights and costs are estimated and documented. The operational requirements are analyzed and tabulated. Diagrams of equipment and processing facilities are provided.
    Keywords: SPACE SCIENCES
    Type: NASA-TM-X-62268
    Format: application/pdf
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  • 9
    Publication Date: 2019-06-27
    Description: The feasibility of obtaining lunar minerals for terrestrial uses is examined. Preliminary results gave indications that it will not be economically feasible to mine, refine, and transport lunar materials to Earth for consumption. A broad systems approach was used to analyze the problem. It was determined that even though the procedure was not economically advisable, the concept for the operations is technically sound.
    Keywords: SPACE SCIENCES
    Type: NASA-TM-X-62267
    Format: application/pdf
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  • 10
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    Unknown
    In:  Other Sources
    Publication Date: 2019-07-13
    Description: A 90-day study was made of teleoperators, robotics, and remote systems technology in the United States. The purpose of the study was to survey state-of-the-art technology in this field, determine major user needs in medicine, mining, and oceanography, and suggest initiatives where federal research and development funding would most significantly impact the application of this technology to the alleviation of explicit national social problems. Following a review of the findings of this study commencing with user needs, speculation is made on impending developments in the application of telemation to remote emergency medical care and remote mining systems.
    Keywords: BIOTECHNOLOGY
    Type: Symposium on Theory and Practice of Robots and Manipulators; Sep 05, 1973 - Sep 08, 1973; Udine; Italy
    Format: text
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