ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
You have 0 saved results.
Mark results and click the "Add To Watchlist" link in order to add them to this list.
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
    A linear combination of Gaussian-type orbitals (LCGTO) Xα study of ferrocene: The metal-to-ring distance and ionization potentials (1986)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 84 (1986), S. 5967-5968 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The metal-to-ring distance of ferrocene, Fe(C5H5)2, has been optimized using the LCGTO-Xα method. The resulting distance is 0.047 A(ring) shorter than the experimental value of 1.65 A(ring). The corresponding symmetric stretching frequency of 331 cm−1 shows good agreement with experiment (303 cm−1). The two lowest (Fe 3d derived) ionization potentials are calculated almost degenerate but in reverse order compared to experiment (2A'1 below 2E2). The errors of all these results are discussed in the light of known inadequacies of the local density approximation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.450854
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Broadband holography applied to eddy current imaging by using signals with multiplied phases (1993)
    Springer
    Journal of nondestructive evaluation 12 (1993), S. 153-162 
    Details
    ISSN: 1573-4862
    Keywords: Nondestructive testing ; eddy current imaging ; broadband holography ; synthetic aperture imaging ; phase multiplication ; image reconstruction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Mathematics
    Notes: Abstract In this paper an eddy current imaging method for nondestructive testing purposes is presented which utilizes the concept of broadband holography. An eddy current coil which is used simultaneously as an antenna for eddy current generation and as a probe for detection of response of interaction between eddy currents and flaws, respectively, is moved along a synthetic aperture during the imaging procedure generating synthetic eddy current pulses by scanning a certain frequency range. In terms of wave propagation phenomena the penetration depth (range) of eddy currents in conducting media is small compared to the equivalent wavelength of this type of fields. Therefore, adequate resolution can only be obtained in the reconstructed cross-sectional images by phase multiplication of received multifrequency signals, which is equivalent to a fictitious reduction of wavelengths. Experimental results verify the imaging capability of this method with improved resolution compared to conventional eddy current testing methods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00567083
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Characterization of strontium and barium manganates by abrasive stripping voltammetry (1998)
    Springer
    Journal of solid state electrochemistry 2 (1998), S. 413-419 
    Details
    ISSN: 1433-0768
    Keywords: Key words Abrasive stripping voltammetry ; X-ray powder diffractometry ; Manganates ; Solid state electrochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Abrasive stripping voltammetry is applied in order to characterize barium and strontium manganates-(V) and -(VI) in solid state phases. Voltammetric reduction peak potential values of KBaMnO4, Ba3(MnO4)2, Ba3(MnO4)2− x (BO3) x (x=0.031(1)), Ba5(MnO4)3OH, Ba5(MnO4)3Cl, Sr5(MnO4)3OH and BaMnO4 are shown to be proportional to the corresponding average Mn-O distances, which were determined from X-ray powder diffractometric data through Rietveld refinement analyses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100080050119
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    A note regarding the rate-determining step of reduction of solid manganates(V) (1999)
    Springer
    Journal of solid state electrochemistry 3 (1999), S. 117-120 
    Details
    ISSN: 1433-0768
    Keywords: Key words Electrochemistry ; Manganates(V) ; Mn oxides
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Potential pulse chonoamperometry was applied to immobilized microparticles of manganates(V) and MnO2 in order to compare the nature of the rate determining step in their reduction. Manganates(V) were found to be reduced by an irreversible one-electron surface reaction, whereas MnO2 reduction is controlled by a reversible reaction coupled to solid-state diffusion. The key importance of the coordination preferences of reacting metal ions on the surface layer of the solid particles is also discussed with respect to known mechanisms of electrochemical dissolution of Fe and Cr oxides.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100080050137
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Segregation of hydrogen fluoride in ice single crystals (1970)
    Springer
    The European physical journal 10 (1970), S. 317-325 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Zusammenfassung Es wurden Eis-Einkristalle erzeugt, die homogen mit HF dotiert waren. Daran wurden Distributionskoeffizienten bestimmt und das Alterungsverhalten untersucht. Es wird angenommen, daß für Fluor-Konzentrationen im Eis kleiner als 10−6 Mol/Liter die gesamte Fremdsubstanzmenge in den Korngrenzen der Mikrostruktur eingelagert wird, wogegen bei höheren Konzentrationen keine Mikrostruktur existiert und die Fremdsubstanz gleichmäßig im Bulk verteilt ist. Die Alterungsuntersuchungen ergaben, daß der Fluorgehalt im Eis im Laufe der Zeit bis zu einer Grenzkonzentration von 10−6 Mol/Liter abnimmt. Dabei dürfte die Mikrostruktur wieder aufgebaut werden.
    Abstract: Résumé Des cristaux de glace contenant du HF en mélange homogène ont été produits. Les coefficients de distribution ont été déterminés et le comportement de la glace analysé à l’aide d’essais de vieillissement. Il a été supposé que pour des concentrations de fluor dans la glace plus petites que 10−6 mol/litre, la quantité entière de la substance dissoute est concentrée dans les limites des grains de la microstructure, tandis que dans le cas de concentrations plus hautes, où la microstructure n’existe pas, la substance dissoute est régulièrement distribuée dans le volume. Les essais de vieillissement ont montré que la concentration de fluor dans la glace diminue avec le temps jusqu’à une concentration-limite de 10−6 mol/litre. La microstructure pourrait alors s’être reconstruite.
    Notes: Abstract Ice single crystals were produced, which were homogeneously doped by HF. Distribution coefficients were determined, and ageing experiments were done. It is assumed: for fluorine-concentrations less than 10−6 m/l the whole solute is concentrated in the grainboundaries of the microstructure, but at higher concentrations there exists no microstructure and the solute is regularly distributed in the bulk. The ageing experiments showed that the fluorineconcentration decreases while stored until a limiting concentration of 10−6 m/l is reached. Then the microstructure may be rebuilt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02422850
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Preparation of Tl-1223 Bulk Samples on Large Scale (1998)
    Springer
    Journal of superconductivity 11 (1998), S. 27-28 
    Details
    ISSN: 1572-9605
    Keywords: Tl-1223 ; bulk material ; quasi open system ; scaleable process
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The preparation of the TI-1223-HTS-ceramics is described. Our method uses a vertically mounted electrical furnace and flowing gas atmosphere instead of closed containers. It is possible to produce sufficient amounts of Tl-1223 material for practical applications such as tapes or current leads. The obtained bulk material (about 100 g / batch) is investigated by the usual physical methods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022609224151
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Data quality in computerized patient records (1994)
    Springer
    Journal of clinical monitoring and computing 11 (1994), S. 233-240 
    Details
    ISSN: 1573-2614
    Keywords: computerized patient record ; computerized medical record ; haematology ; cytology database ; electronic data quality ; free text coding
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Medicine
    Notes: Abstract This paper addresses the problem of data quality in electronic patient records using a computerized haematology biopsy report system as an example. Physicians extracted five parameters from a traditional free text cytology report and encoded these parameters thus producing a computer processable report. The parameters were 1) the organ biopsied, 2) quality of specimen, 3) cytological diagnosis including 4) a modifier code for the main diagnosis code (i.e. status post chemotherapy, Y-code) and 5) an additional key describing the degree of remission obtained after chemotherapy of acute leukemias. From the various steps involved in generating the electronic record we selected two critical ones: - encoding of free text terms by physician staff - entering of the coded terms into a computer by lab staff. We analyzed the rates of correct, incorrect and missing codes for each of the five parameters. Our findings indicate that in this model of an electronic patient record 1) there is significant inaccuracy of physicians during the process of encoding the free text report with error rates between 3.2 and 28% and omission rates up to 64%. 2) lab staff entering these coded data into the computer introduce additional errors (0–7.8%) but rarely miss correctly encoded data (0–0.9%). 3) introducing a revised coding system data quality improved significantly (p≤0.001) with a fivefold increase of correct and a 75% reduction of missing codes. 4) the clinical relevance of the diagnoses encoded as perceived by clinicians is a significant factor affecting error and omission rates. 5) a significant source of error is the machine/user interface resulting in incorrect data entry of up to 91.7%. 6) when considering all combined errors and omissions in coding and in entering these codes into a computer only 43% of all electronic reports examined were correct and complete. We conclude that the quality of data in electronic patient records can be quite low. Amongst significant factors contributing to low electronic data quality are the type of user interacting with the system, the kind of function the user performs, relevance of codable terms as perceived by physicians, the kind of coding system used and the quality of the human/machine-interface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01139875
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Coding medical concepts:A controlled experiment with a computerised coding tool (1995)
    Springer
    Journal of clinical monitoring and computing 12 (1995), S. 141-145 
    Details
    ISSN: 1573-2614
    Keywords: coding medical concepts ; diagnoses ; electronic patient record ; ICD-9 ; quality of documentation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Medicine
    Notes: Abstract In clinical routine there is a growing need to encode medical concepts with available standard coding systems. The coding process can be time consuming and may significantly add to daily paperwork, particularly regarding patients with multiple diagnoses and in busy clinical environments with a high turnover of patients. We have developed a generic computerised encoding tool — the PADS encoder — to ensure rapid, correct and complete coding of diagnoses in daily routine. The tool is integrated into an electronic patient record system (PADS, Patient Archiving & Documentation System) and takes full advantage of the user friendly Macintosh interface. The tool was tested in a controlled experiment by 18 clinicians who encoded a total of 666 medical concepts in each protocol (study protocol vs. control). The following positive findings were significantly associated with the use of the computerised coding tool: - the number of correctly encoded medical concepts was higher (99.55% vs. 86.1%) - coding errors were lower (0% vs. 10.81%) - more modifier codes were encoded correctly (increase by up to 43%) - less coding errors were made (decrease by up to 43%) - the overall rate of correctly encoded and complete main and modifier codes was increased by 31.27% (97.29% vs. 66.02%) - coding time was reduced by 50% This paper presents data to suggest that a computerised coding tool can produce more complete data of higher quality and can save time compared with the traditional approach to encode medical concepts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02332688
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Editor's note (1986)
    Springer
    Journal of automated reasoning 2 (1986), S. 275-275 
    Details
    ISSN: 1573-0670
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02328449
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Opening the AC-unification race (1988)
    Springer
    Journal of automated reasoning 4 (1988), S. 465-474 
    Details
    ISSN: 1573-0670
    Keywords: Theory unification ; AC-unification ; linear Diophantine equation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract This note reports about the implementation of AC-unification algorithms, based on the variable-abstraction method of Stickel and on the constant-abstraction method of Livesey, Siekmann, and Herold. We give a set of 105 benchmark examples and compare execution times for implementations of the two approaches. This documents for other researchers what we consider to be the state-of-the-art performance for elementary AC-unification problems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00297251
    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...