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  • 1
    Electronic Resource
    Electronic Resource
    Site-specific recombination in Gram-positive theta-replicating plasmids (1996)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 142 (1996), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract This review summarises current information on the site-specific recombinases encoded by the plasmids of the Gram-positive bacteria that have low guanine and cytosine content in their DNA. It focuses on the peculiar biological features of the recombination systems encoded by the theta-replicating plasmids and compares them with the site-specific recombinases encoded by transposons or plasmids originally isolated from Gram-negative bacteria.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1996.tb08399.x
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  • 2
    Electronic Resource
    Electronic Resource
    SPECTRAL ANALYSIS OF SYSTOLIC BLOOD PRESSURE AND HEART RATE OSCILLATIONS RELATED TO RESPIRATION (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical and experimental pharmacology and physiology 22 (1995), S. 0 
    Details
    ISSN: 1440-1681
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: 1. Non-invasive assessment of short-term systolic blood pressure (SBP) and heart rate (HR) variability was obtained with the plethysmographic finger blood pressure measurement device. Respiration was measured with a respiratory inductive plethysmograph, which was calibrated prior to each study.2. The effects of breathing pattern on the respiratory (high frequency, HF) component of the SBP or HR spectrum were analysed by Fourier transform.3. Our quantification of the changes in the HF (respiratory) peak of the HR or SBP spectrum with changes in tidal volume (Vt) and breathing frequency (BF) indicates that the modulus of this component may be predicted for any combination of depth and frequency of breathing.4. The modulus of this HF component for the HR or SBP spectrum was linearly related to the respiratory sinus arrhythmia (RSA) or to the SBP oscillation related to respiration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1440-1681.1995.tb02014.x
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  • 3
    Electronic Resource
    Electronic Resource
    Das Chemiehistorische Dokument. Der Studienplan des Begründers der makromolekularen Chemie - Hermann Staudinger (1881 - 1965) (1993)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 335 (1993), S. 211-213 
    Details
    ISSN: 0941-1216
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Documents on the History of Chemistry. Course of Studies of the Founder of the Macromolecular Chemistry, Hermann Staudinger (1881 - 1965)
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19933350219
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  • 4
    Electronic Resource
    Electronic Resource
    Zur Fusionierung des „Journals für praktische Chemie“ mit der „Chemiker-Zeitung“. Eine historische BetrachtungHerrn Prof. Dr. Rolf Borsdorf zum 60. Geburtstag gewidmet (1992)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 334 (1992), S. 5-13 
    Details
    ISSN: 0941-1216
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: On the Fusion of the Journals „Journal für praktische Chemie “ and „Chemiker-Zeitung“ A Historical AccountThe fusion of the journals „Journal für praktische Chemie“ (founded in 1828 in Leipzig) and „Chemiker-Zeitung“ (founded in 1877 in Köthen) is the background for a historical study on the journals' development.„Journal für praktische Chemie“ was founded by O.L. Erdmann in Leipzig and is the oldest German chemical journal; its original title was „Journal für technische und ökonomische Chemie“. It has always been a scientific journal while „Chemiker-Zeitung“ in its beginnings mainly provided information about practical applications. Its founder and first editor was the chemist G. Krause from Köthen (until 1905). In the 1950s the editors decided to publish a journal with a higher scientific orientation, the result of which was the wellknown „Chemiker-Zeitung“.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19923340103
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  • 5
    Electronic Resource
    Electronic Resource
    Die „Geburtsurkunde“ der „Chemiker-Zeitung“ (1994)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 336 (1994), S. 182-184 
    Details
    ISSN: 0941-1216
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The Birth Certificate of the Journal „Chemiker-Zeitung“
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19943360219
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  • 6
    Electronic Resource
    Electronic Resource
    Effects of the cold pressor test on short-term fluctuations of finger arterial blood pressure and heart rate in normal subjects (1993)
    Springer
    Clinical autonomic research 3 (1993), S. 303-310 
    Details
    ISSN: 1619-1560
    Keywords: Cold pressor test ; Arterial blood pressure ; Heart rate ; Spectral analysis ; Transfer function analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The effect of the cold pressor test on autonomic cardiovascular control was studied non-invasively by means of spectrum analysis of periodic heart rate and blood pressure fluctuations in ten normal subjects. Fast Fourier Transform algorithm based on a 256-point time series (sampling rate 2 Hz, i.e. 2-min and 8-s) was used to estimate the amplitude spectra of heart rate and blood pressure rhythmicity at the low frequency (70–140 mHz) and respiration related frequency (230–270 mHz) band. Respiration rate was controlled at 250 mHz. Auto- and cross-spectral techniques were used to determine the complex relationship between systolic blood pressure and heart rate fluctuations in the frequency domain. The spectral pattern of systolic and diastolic blood pressure showed a marked increment of the absolute and relative (100 multiplied with absolute value/total area under the curve of the amplitude spectrum from 15–500 mHz) low frequency component: control vs. cold pressor test—systolic blood pressure—absolute values (in [mmHg/Hz1/2]): 634.4 ± 48.9 vs. 827.4 ± 69.9* relative values (in [%]): 26 ± 2 vs. 32 ± 2*; diastolic blood pressure —absolute values: 433.2 ± 42.3 vs. 537.2 ± 45.8* relative values: 35 ± 3 vs. 40 ± 2*, (average ± SEM, *P 〈 0.05). The cold pressor test induced no change in average heart rate; the absolute low frequency component in heart rate spectra increased clearly during the test: low frequency component (in [bpm/Hz1/2]): 586.9 ± 89.9 vs. 712.0 ± 91.4*, while the relative low frequency component did not change: 29 ± 3 vs. 30 ± 3. There was no alteration in the respiration related frequency component in all time series and in the transfer gain and phase functions during cold pressor test. We conclude that the cold pressor test increases low frequency systolic blood pressure fluctuations which reflects an increase in sympathetic vasomotor control. Furthermore the cold pressor test does not induce change in the transfer gain and phase characteristics of modulation of heart rate by systolic blood pressure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01827331
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  • 7
    Electronic Resource
    Electronic Resource
    Effects of plasmapheresis on short-term variability of blood pressure in healthy donors (1992)
    Springer
    Clinical autonomic research 2 (1992), S. 299-302 
    Details
    ISSN: 1619-1560
    Keywords: Blood pressure ; Spectral analysis ; Plasmapheresis ; Hypovolaemia ; Finger blood pressure ; Variability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The acute effect of mild central hypovolaemia induced by plasmapheresis on the short-term variability of blood pressure and heart rate was evaluated in ten healthy donors. Indirect finger blood pressure was measured by a non-invasive device (Finapres). Analogue-to-digital conversion of the blood pressure was used to determine systolic, diastolic and mean blood pressure and heart rate every second. The equidistant sampling allowed a direct spectral analysis using a fast Fourier transform algorithm. Blood pressure and heart rate were maintained while an increased overall variability of blood pressure was observed after plasmapheresis. The increased total area under the curve of the systolic and diastolic blood pressure spectra was documented with the selective analysis of the three main components of the spectra: the increase in the oscillations of blood pressure following plasmapheresis predominated in the 66–129 mHz region, corresponding to Mayer waves. The spectral profile of HR was unaffected by plasmapheresis. The significant increase in the 10-s period oscillations of blood pressure after the mild central hypovolaemia could result from the unloading of cardiopulmonary (and arterial) baroreceptors which in turn could buffer the arterial pressure through sympathetic activation, detected on the systolic and diastolic pressure spectra in the low-frequency range.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01824299
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