Library

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
  • 1
    Electronic Resource
    Electronic Resource
    Effect of the heterointerface on the spin splitting in modulation doped InxGa1−xAs/InP quantum wells for B→0 (1998)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 83 (1998), S. 4324-4333 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Spin splitting of conduction band electrons in In0.53Ga0.47As/In0.77Ga0.23As/InP heterostructures due to spin-orbit coupling is studied by performing Shubnikov–de Haas measurements on nongated and gated Hall bars. From an analysis of the beating pattern in the Shubnikov–de Haas oscillations, the spin-orbit coupling constant is determined. For a symmetric sample no beating pattern and thus no spin splitting is observed. This demonstrates that the k3 contribution to the spin-orbit coupling constant can be neglected. By applying an envelope function theory it is shown that the major contribution to the Rashba spin-orbit coupling originates from the band offset at the interface of the quantum well. Using gated Hall bar structures it is possible to alter the spin-orbit coupling by application of an appropriate gate voltage. A more negative gate voltage leads to a more pronounced asymmetry of the quantum well, which gives rise to a stronger spin-orbit coupling. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.367192
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Compliance in administration of prescribed analgesics (1997)
    Oxford, UK : Blackwell Science Ltd
    Anaesthesia 52 (1997), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: In this noninterventional study, the implementation of ‘modern’ pain management in clinical practice was investigated by recording the regular prescription, administration and efficacy of analgesic drugs. This resulted in a reproducible and superficial quality control design for hospitals. One hundred and fifty surgical patients were followed during 5 days postoperatively. For every patient, pain, mood and sedation were measured using visual analogue and verbal descriptive scores; the prescription of analgesics at set times and administered doses of analgesics were also recorded. Only paracodeine and naproxen were administered regularly as prescribed, unlike paracetamol and morphine. The prescribed daily dose of morphine was only received by 4.2% of all patients. Although the postoperative pain treatment pathway was considered to be improved after better education and communication, in fact the opposite was found. This is probably caused by traditional thinking, lack of control and time pressure on the hospital staff and the subservient attitude of the patient.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.1997.243-az0378.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Fidel Pagés Miravé (1886–1923) The pioneer of lumbar epidural anaesthesia (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 49 (1994), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.1994.tb03480.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Effects of thiopentone, etomidate and propofol on beat-to-beat cardiovascular signals in man (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 48 (1993), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Analysis of beat-to-beat fluctuations of heart rate and blood pressure is a promising new approach to the clinical diagnosis and management of alterations in cardiovascular regulation. We investigated the effects of three induction agents on beat-to-beat heart rate and blood pressure fluctuations in man. Beat-to-beat fluctuations were analysed by spectral analysis. Two spectral areas are of main interest. One area is centred on the respiratory frequency and shifts with changes in respiratory rate (High Frequency area). These high frequency flucuations in heart rate are caused by respiratory-induced blood pressure fluctuations, mediated by the vagus nerve through the baroreflex mechanism. Variability in the Low Frequency area, which occurs between 0.06 and 0.12 Hz is considered to be related to haemodynamic fluctuations due to the sympathetic baroreflex control loop of vasomotor activity and heart rate. Results from our study indicate that thiopentone, etomidate and propofol show considerable differences in their effects on beat-to-beat variability of heart rate and blood pressure. These differences can be explained by their specific effects on the cardiovascular system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.1993.tb07412.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Diffractometer devices controlled by a personal computer (1991)
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 24 (1991), S. 190-193 
    Details
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: The application of single-board microcomputers as programmable interfaces simplifies the construction of complex diffractometer control units. The amount of hardware components of the control units is reduced and the structure of the circuits is easy to survey. These intelligent multipurpose single-board microcomputers unburden the personal computer and simplify the development of the diffractometer measuring program. The presented solution is based on an Atari 1040 STF. The concept, however, can be applied to any type of personal computer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0021889890012365
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    A microprocessor-controlled multichannel analyser for wavelength determination (1991)
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 24 (1991), S. 1060-1062 
    Details
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: The application of an ultrafast analogue-to-digital converter and a high-performance-single board microcomputer permits the construction of a very fast and versatile multichannel analyser (MCA) at low cost. With the powerful instruction set of the microprocessor MC 68000, an intelligent all-round MCA could be realised with useful correction software on the single-board microcomputer. This MCA was used successfully for a data collection by Laue techniques with a four-circle diffractometer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0021889891005162
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Bicyclic [b]-Heteroannulated Pyridazine Derivatives. 3. Partially Hydrogenated Triazolo[4,3-b]pyridazines (1995)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 51 (1995), S. 1829-1832 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270195002848
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Structure of C36H52Cl6InN3O14 (1995)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 51 (1995), S. 174-177 
    Details
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S010876819400563X
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    A Laue diffractometer with δ geometry (1992)
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 25 (1992), S. 440-443 
    Details
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: The Laue technique shortens the time required to measure integrated intensities for X-ray structure determination. The Laue diffractometer presented here is a δ-circle diffractometer equipped with an ordinary low-cost photomultiplier-scintillation-crystal combination. Stepper-motor control devices and the multichannel analyzer (MCA) were originally developed for this particular purpose. These components are equipped with efficient microprocessor technology. A personal computer with graphic facilities is used for processing. Using special procedures in the analysis and the measurement of data, the disadvantages of a scintillation counter may be avoided or reduced.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0021889891015157
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Comment on Enantiomorphism and multiple-beam X-ray diffraction by Roberto Colella (1994) (1995)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 51 (1995), S. 91-92 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: For the transition of the structure factors of benzil (B) to benzil (A), Colella [Acta Cryst. (1994), A50, 55–57] employs the relation TeXi.e., in matrix notation, TeX This relation is wrong since det (A) = 1. It is not a mapping onto an enantiomorph; for the change of handedness, det (A) must be −1. Moreover, matrix A is an element of the related point group 321. Thus, the result is symmetrically equivalent to the starting set of structure factors. As a consequence, all arguments presented on the basis of (1) are invalid.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108767394008731
    Library Location Call Number Volume/Issue/Year 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...