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  • Electronic Resource  (6)
  • 1995-1999  (4)
  • 1975-1979  (2)
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  • Electronic Resource  (6)
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  • 1
    Electronic Resource
    Electronic Resource
    Determination of equilibrium constants for electron donor/acceptor complexes by resonance Raman spectroscopy (1977)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 81 (1977), S. 1489-1492 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100530a012
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    A virtual instrument approach for automation of temperature programmed desorption (1998)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 69 (1998), S. 3707-3708 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: LabVIEW provides a method to create a user friendly automated Virtual Instrument that can be programmed to perform simultaneous display and control functions from several different laboratory instruments. This note describes how LabVIEW was used to create a temperature programmed desorption virtual instrument to facilitate easy control of sample temperature and data collection and handling. The program is easy to use, fairly versatile for different types of catalysis samples, and the data collected can be imported into most spreadsheets. The program as written controls the temperature in a linear fashion with very little deviation from the user defined ramp. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1149165
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Inexpensive ultrahigh vacuum heatable/coolable xyz-rotary motion sample manipulator (1995)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 66 (1995), S. 3048-3050 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A simple design for a heatable, coolable, rotatable sample manipulator, suitable for ultrahigh vacuum (UHV) applications, is described. Highlights of the design include using a combination power/thermocouple feedthrough for heating, cooling, and temperature measurement; and the use of primarily "off-the-shelf'' components available from most UHV components vendors. The described manipulator is capable of sample cooling to ∼100 K, sample heating to above 900 K, while maintaining 360° of rotary motion, ∼1 in. of x and y motion, and 2 in. of z motion. The apparatus can be assembled for approximately $5500 (all new parts) and uses about 3 3l of liquid N2 per day. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1145527
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    A four-point surface conductivity probe suitable for in situ ultrahigh vacuum conductivity measurements (1997)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 68 (1997), S. 1812-1813 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A simple design for a four-point probe suitable for precision surface conductivity measurements is described. Our design makes use of small, commercially available spring contact probes which are mounted in a custom built MACOR ceramic probe head. The design is suitable for use in ultrahigh vacuum applications, and the custom-built parts can be fabricated in any machine shop. Very reproducible values were obtained using this probe for surface conductivity measurements on a MoS2(0001) model catalyst, a sputter deposited indium-tin oxide thin film and a doped silicon wafer. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1147968
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Arterial–Pulse Oximetry Loops: A New Method of Monitoring Vascular Tone (1997)
    Springer
    Journal of clinical monitoring and computing 13 (1997), S. 223-228 
    Details
    ISSN: 1573-2614
    Keywords: Equipment ; pulse oximeter ; plethysmograph ; compliance ; vascular resistance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Medicine
    Notes: Abstract Objective. We report the off-line calculation of the vascular complianceof the finger and suggest the continuous on-line use of this methodology asan aid to monitoring the peripheral vascular resistance. This method consistsof the simultaneous analysis of the waveform signals from the pulse oximetermonitors and the arterial pressure as indicators of “volume” andpressure respectively to continuously calculate the vascular“compliance” (volume change per unit pressure change). This shouldbe seen as a “relative compliance” as the pulse plethysmographsignal is not calibrated. This new methodology allows for continuousmonitoring of peripheral vascular compliance as a beat-to-beat indicator ofperipheral vascular resistance. The vaso-constrictors, phenylephrine andephedrine, were shown to decrease the compliance as predicted. Methods. Thearterial pressure and pulse oximeter waveforms were obtained during routineanesthetic care. The waveforms were collected with a computer data-acquisitionsystem and then analyzed “off-line” as an indirect indicator oftotal vascular tone. Demographic and clinical information including drugadministration were recorded. Results. A case report is presented using thisnew form of analysis. Vascular compliance changes induced by phenylephrine andephedrine were studied. A dose response curve of peripheral vascularcompliance to phenylephrine was generated from these data. Conclusions. Byplotting the pulse oximeter waveforms versus the arterial waveforms, multiplevolume versus pressure (relative compliance) loops were obtained. Analysis ofthese loops may assist in the monitoring of vascular compliance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007361020825
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Third world settlement frontiers: modest population absorbers (1978)
    Springer
    GeoJournal 2 (1978), S. 193-202 
    Details
    ISSN: 1572-9893
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography
    Notes: Conclusions This study concludes that a relatively small part of the Third World's increasing populations may be absorbed in their frontiers. Throuh the 49 locations are scattered throughout that world three characteristics are emphasized: 1) these are the principal regions where studies of population absorption potential should be initiated before any new settling is undertaken, 2) the frontiers are not as convenient to areas of world population pressure as is desirable, and 3) what are mapped as areas may turn out to be a series of spots requiring considerable detailed planning at local levels. Overall there is reason for some encouragement. Frontiering could be executed now with degrees of success if proper respect is paid the complexity of the task and to previous experience. It is suggested that a contemporary planner of new settling is wiser to elect areas where the process may build on an existing minimal geographic base of settlers and transportation so as to start relatively quickly and be at least partly commercial. Frontiers these days are unlikely to take as long to develop as they did 25 or 50 years ago. Nor should they. Moreover, the drive to raise world standards of living is calling for a new order of economies and one corollary is apparent: frontiers for subsistence living have minimal value now and in the future and should be short-lived, if existent at all. But, most important, the frontiers provide the possibility of meeting a part of a burgeoning problem in a way that is familiar to the people and that could be efficient.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00208636
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    Paper (German National Licenses)
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