ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Articles  (89)
  • 1995-1999  (89)
Collection
Source
Keywords
Publisher
Years
Year
Journal
Topic
  • 1
    facet.materialart.
    Unknown
    Principles for Sustainable Governance of the Oceans (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-07-11
    Description: Pressures being exerted on the ocean ecosystems through overfishing, pollution, and environmental and climate change are increasing. Six core principles are proposed to guide governance and use of ocean resources and to promote sustainability. Examples of governance structures that embody these principles are given.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Costanza -- Andrade -- Antunes -- den Belt M -- Boersma -- Boesch -- Catarino -- Hanna -- Limburg -- Low -- Molitor -- Pereira -- Rayner -- Santos -- Wilson -- Young -- New York, N.Y. -- Science. 1998 Jul 10;281(5374):198-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉R. Costanza, Univ. of Maryland Center for Environmental Science, Biology Dept., and Inst. for Ecological Economics, P.O. Box 38, Solomons, MD 20688, USA. F. Andrade, Marine Laboratory of Guia, Sciences Faculty of Lisbon Univ. (FCUL), Estrada do Guincho, 2750 Cascais, Portugal. P. Antunes and R. Santos, Ecoman Center, Dept. of Environmental Sciences and Engineering, New University of Lisbon, Quinta da Torre, 2825 Monte da Caparica, Portugal. M. van den Belt, Ecological Economics Research and Applications, Inc., P.O. Box 1589, Solomons, MD 20688, USA. D. Boersma, Dept. of Zoology, Univ. of Washington, Seattle, WA 98195, USA. D. Boesch, Univ. of Maryland Center for Environmental Science, P.O. Box 775, Cambridge, MD 21613, USA. F. Catarino, Faculty of Sciences, Univ. of Lisbon, Rua Escola Politecnica, 58, 1250 Lisbon, Portugal. S. Hanna, Dept. of Agricultural and Resource Economics, Oregon State Univ., Corvalis, OR 97331-3601, USA. K. Limburg, Dept. of Systems Ecology, Univ. of Stockholm, S-106 91 Stockholm, Sweden. B. Low, School of Natural Resources, Univ. of Michigan, Ann Arbor MI 48109-1115, USA. M. Molitor, Dept. of Earth and Environmental Sciences, Columbia Univ., P.O. Box 689, Oracle, AZ 85623, USA. J. G. Pereira, Dept. of Oceanography and Fisheries, Univ. of the Azores, PT 9900 Horta, Azores, Portugal. S. Rayner, Battelle, 901 D Street SW, Suite 900, Washington, DC 20024-2115, USA. J. Wilson, School of Marine Sciences, Univ. of Maine, Orono, ME 04469-5741, USA. M. Young, CSIRO Land and Water, Private Bag No. 2, Glen Osmond, Australia 5064.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9660740" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 2
    facet.materialart.
    Unknown
    Dopamine's role (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-12-31
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gray, J A -- Young, A M -- Joseph, M H -- New York, N.Y. -- Science. 1997 Nov 28;278(5343):1548-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9411769" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Conditioning (Psychology) ; Dopamine/metabolism/*physiology ; Humans ; Nucleus Accumbens/*metabolism ; Rats ; Reinforcement (Psychology)
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 3
    facet.materialart.
    Unknown
    Good teaching (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-03-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Young, A M -- New York, N.Y. -- Science. 1996 Mar 29;271(5257):1789c-90c.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17812354" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 4
    facet.materialart.
    Unknown
    Processes Controlling the Distribution of Ti and Al in Weathering Profiles, Siliciclastic Sediments and Sedimentary Rocks (1998)
    Society for Sedimentary Geology
    Details
    Publication Date: 1998-01-01
    Print ISSN: 1527-1404
    Electronic ISSN: 1938-3681
    Topics: Geosciences
    Published by Society for Sedimentary Geology
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 5
    facet.materialart.
    Unknown
    Abstract: Petrology, Paleontology, and Paleoenvironments of Wilds and Lower Nichols Sands: Paleocene Wilcox Units in Louisiana  (1999)
    American Association of Petroleum Geologists
    Details
    Publication Date: 1999-01-01
    Print ISSN: 0149-1423
    Electronic ISSN: 1943-2674
    Topics: Geosciences
    Published by American Association of Petroleum Geologists
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 6
    Electronic Resource
    Electronic Resource
    Fast and precise thermoregulation system in physiological brain slice experiment (1995)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 66 (1995), S. 5609-5617 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We have developed a fast and precise thermoregulation system incorporated within a physiological experiment on a brain slice. The thermoregulation system is used to control the temperature of a recording chamber in which the brain slice is placed. It consists of a single-chip microcomputer, a set command module, a display module, and an FLC module. A fuzzy control algorithm was developed and a fuzzy logic controller then designed for achieving fast, smooth thermostatic performance and providing precise temperature control with accuracy to 0.1 °C, from room temperature through 42 °C (experimental temperature range). The fuzzy logic controller is implemented by microcomputer software and related peripheral hardware circuits. Six operating modes of thermoregulation are offered with the system and this can be further extended according to experimental needs. The test results of this study demonstrate that the fuzzy control method is easily implemented by a microcomputer and also verifies that this method provides a simple way to achieve fast and precise high-performance control of a nonlinear thermoregulation system in a physiological brain slice experiment. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1146423
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    New digital phase meter concept and its application (1997)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 68 (1997), S. 1894-1901 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A new concept for digital phase meters, which in practical embodiment provides most of the commonly desired performance features such as wide bandwidth, high resolution, high speed measurement, etc., is presented. This meter emulates a Vernier caliper and inherits its characteristics. Phase difference may be measured in any period of the measured signals. In the basic theory, two phase-locked-loop circuits are used as frequency multipliers which divide each period of the input signals into multiple equal time slots, thereby emulating the divisions of space inscribed on the scales of a caliper. A simple "pseudophase detector" made of a D-type flip–flop is used to compare the location of the time slots on both of the scales, just as we use the Vernier caliper. The new meter's resolution remains very high at both very high input frequencies and output data rates and while maintaining a wide input bandwidth; a resolution of 100 at 10 MHz input and 10 MHz output is easily attainable with off-the-shelf components requiring no clock rate higher than 100 MHz. In addition to a discussion of the theory, experimental results of a test embodiment are presented. Using a 10 MHz clock, a rather crude test circuit could detect a delay time of 400 ns between an original and delayed 40 kHz signal, equivalent to a resolution of ∼65 000. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1147963
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Multiple-frequency continuous wave ultrasonic system for accurate distance measurement (1999)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 70 (1999), S. 1452-1458 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A highly accurate multiple-frequency continuous wave ultrasonic range-measuring system for use in air is described. The proposed system uses a method heretofore applied to radio frequency distance measurement but not to air-based ultrasonic systems. The method presented here is based upon the comparative phase shifts generated by three continuous ultrasonic waves of different but closely spaced frequencies. In the test embodiment to confirm concept feasibility, two low cost 40 kHz ultrasonic transducers are set face to face and used to transmit and receive ultrasound. Individual frequencies are transmitted serially, each generating its own phase shift. For any given frequency, the transmitter/receiver distance modulates the phase shift between the transmitted and received signals. Comparison of the phase shifts allows a highly accurate evaluation of target distance. A single-chip microcomputer-based multiple-frequency continuous wave generator and phase detector was designed to record and compute the phase shift information and the resulting distance, which is then sent to either a LCD or a PC. The PC is necessary only for calibration of the system, which can be run independently after calibration. Experiments were conducted to test the performance of the whole system. Experimentally, ranging accuracy was found to be within ±0.05 mm, with a range of over 1.5 m. The main advantages of this ultrasonic range measurement system are high resolution, low cost, narrow bandwidth requirements, and ease of implementation. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1149604
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    A combined long-term recording system for single-unit activity and neurotransmitter efflux of a brain slice (1998)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 69 (1998), S. 1860-1868 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A combined long-term measurement and recording system for neurotransmission research of brain slices is presented in this study. This system, based on the IBM PC or compatible computer, is capable of simultaneously measuring and recording both single-unit neural electropotential signals and the electrochemical signals of neurotransmitter efflux from the same neuron in a brain slice for long periods of time (time limited largely by hard disk capacity, 100 h or more not being unreasonable with contemporary hardware) using a single carbon microelectrode for both measurements. The combined long-term recording system uses a simple switching circuit to switch periodically the single microelectrode between two data acquisition subsystems, one for electrochemical data and one for electrophysiological data. The simple switching circuit separates the electrophysiological signals and electrochemical signals, overcoming the traditional interference problem caused by the two different measuring techniques. Software designed for the proposed system allows easy reconstruction of the full time course of the compressed measured data and easy, simultaneous display of both types of signals on the same time scale. On-line and recorded displays are available. Test results of a practical implementation of the proposed system verify that the combined long-term recording system meets actual requirements for electrophysiological and neurochemical research. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1148856
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Photofragmentation dynamics of Mg2(CO2)+1,2 (1995)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 102 (1995), S. 5235-5245 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We have investigated the photofragmentation spectroscopy of Mg2(CO2)+1,2 in a reflectron time-of-flight mass spectrometer. For the linear bimolecular complex Mg2(CO2)+, we have observed three distinct molecular absorption bands, in the red, the green, and the near uv spectral regions. In each band both Mg+ and Mg+2 fragments are observed, although with different action spectra. In the uv band, we also observe reactive fragmentation to form the chemical product Mg2O+. As an initial step in investigating the dissociation mechanism and the dynamical effects which determine the final state branching, we have carried out preliminary calculations of the low lying Mg2(CO2)+ potential energy curves in collinear geometry. Photofragmentation of the complex Mg2(CO2)+2 occurs over a broad spectral range in the visible. We have found that the addition of the second solvent molecule dramatically enhances the solvent cage effect, as evidenced by a large increase in the Mg+2/Mg+ branching ratio throughout this spectral region. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.469249
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...