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  • 1
    Electronic Resource
    Electronic Resource
    (+)-5-Hydroxy-dioxindole-3-acetic acid, a synergist from rice bran of auxin-induced ethylene production in plant tissue
    Amsterdam : Elsevier
    Phytochemistry 16 (1977), S. 635-637 
    Details
    ISSN: 0031-9422
    Keywords: 5-hydroxy-dioxindole-3-acetic acid ; 5-hydroxy-oxindole-3-acetic acid ; Gramineae ; IAA. ; Oryza sativa ; rice bran ; synergist
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0031-9422(00)89220-1
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  • 2
    Electronic Resource
    Electronic Resource
    Studies on the host-specific pathotoxins produced in minor amounts by Helminthosporium maydis, race T
    Amsterdam : Elsevier
    Bioorganic Chemistry 10 (1981), S. 206-218 
    Details
    ISSN: 0045-2068
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0045-2068(81)90024-9
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  • 3
    Electronic Resource
    Electronic Resource
    Structure of the host-specific pathotoxins produced by Helminthosporium maydis, race T
    Amsterdam : Elsevier
    Tetrahedron Letters 21 (1980), S. 1537-1540 
    Details
    ISSN: 0040-4039
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0040-4039(00)92768-0
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Noninvasive automatic measurement of arterial elasticity in human fingers and rabbit forelegs using photoelectric plethysmography (1986)
    Springer
    Medical & biological engineering & computing 24 (1986), S. 591-596 
    Details
    ISSN: 1741-0444
    Keywords: Arterial elastic property ; Human finger ; Noninvasive measurement ; Photoelectric plethysmography ; Pressure-volume relationship ; Rabbit foreleg ; Volume elastic modulus ; Volume-oscillometric method
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract A new instrument for the noninvasive measurement of arterial elastic properties such as ‘pressure-volume relationship’ and ‘volume elastic modulus’ in human fingers or in rabbit forelegs has been designed using a transmittance infra-red photoelectric plethysmography technique. The measurement and display of the results by this system is carried out automatically by use of a conventional personal computer. Using this instrument, the progressive and regressive changes in arterial elastic properties have been clearly demonstrated in the forelegs of hyperlipoedemic rabbits with experimental atherosclerosis. The effect of vasodilation by isosorbide dinitrate on the finger arteries of patients with congestive heart failure was also successfully studied. This instrument is capable of a rapid and reliable measurement of arterial elasticity and appears to be useful not only in basic cardiovascular research laboratories but also in clinics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02446261
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  • 5
    Electronic Resource
    Electronic Resource
    Noninvasive measurement of arterial elasticity in various human limbs (1988)
    Springer
    Medical & biological engineering & computing 26 (1988), S. 641-646 
    Details
    ISSN: 1741-0444
    Keywords: Admittance plethysmography ; Arterial compliance ; Human limb ; Noninvasive measurement ; Volume elastic modulus ; Volume oscillometric method
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract Arterial elasticity expressed by such indices as volume elastic modulus Ev and compliance Ca were noninvasively measured in various human limb segments; the upper arms, forearms, fingers, thighs, calves and toes. These indices are defined, respectively, as $$E_v = \Delta P/(\Delta V/\bar V_a )$$ and Ca=ΔV/ΔP, where ΔP is pulse pressure, $$\bar V_a $$ mean arterial volume and ΔV its pulsatile variation. ΔP was calculated from systolic Pas and mean Pam arterial pressures determined by volume oscillometric sphygmomanometry using the following equation: $$\Delta P = 3(P_{as} - P_{am} )/2\bar V_a $$ and the ΔV were detected by electrical admittance plethysmography at various transmural pressure Pt levels controlled by a compression cuff. The values obtained in these limb segments were compared with each other at Pt levels 0,30 and 60 mm Hg and the differences between them were discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02447504
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  • 6
    Electronic Resource
    Electronic Resource
    Vibration technique for indirect measurement of diastolic arterial pressure in human fingers (1989)
    Springer
    Medical & biological engineering & computing 27 (1989), S. 130-136 
    Details
    ISSN: 1741-0444
    Keywords: Diastolic pressure ; Finger arterial pressure ; Indirect sphygmomanometry ; Photoelectric plethysmography ; Pressure/volume relation ; Vibration method ; Volume oscillometric method
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract Diastolic pressure Pd was indirectly measured by vibrating a finger artery with a 10 Hz sinusoidal pressure variation during a gradual increase (or decrease) in occlusive cuff pressure Pc. Pulsatile arterial volume changes on which sinusoidal variations are superimposed were detected by a transmitted infra-red photoelectric plethysmograph (TIPP). It is known that volume change in an artery shows a maximum amplitude at the transmural pressure Pt level equal to 0 mm Hg due to the nonlinear viscoelastic properties of the arterial wall. For the same reason, the amplitude of the sinusoidal volume variation reached its maximum at the end-diastolic phase, when Pc was controlled to be exactly equal to Pd. The indirect Pd values determined from Pc were compared with those simultaneously measured by a direct method in rabbit forelegs and by the volume-compensation method in human fingers. Using the principle of the volume oscillometric method systolic and mean pressures were also determined by this system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02446221
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  • 7
    Electronic Resource
    Electronic Resource
    Electric impedance cuff for the indirect measurement of blood pressure and volume elastic modulus in human limb and finger arteries (1989)
    Springer
    Medical & biological engineering & computing 27 (1989), S. 477-483 
    Details
    ISSN: 1741-0444
    Keywords: Arterial elastic properties ; Electric impedance ; Noninvasive measurement ; Plethysmograph ; Sphygmomanometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract A new plethysmograph, the electric impedance cuff, was designed for the indirect measurement of blood pressure, volume elastic modulus Ev and compliance Ca in human limb arteries. This comprises a compression chamber filled with electrolyte solution and a tetrapolar electric impedance plethysmograph whose electrodes are placed inside the chamber; the former for controlling transmural arterial pressure Pt, and the latter for detecting total limb volume Vo, mean arterial volume $$\bar V_a $$ and its variation ΔVa. Systolic and mean arterial pressure in the upper arms, forearms and fingers were measured by detecting pulsatile impedance variation during the gradual (3–5 mm Hg per heart beat) increase (or decrease) in chamber pressure by the volume oscillometric technique. Diastolic and pulse pressure ΔP were calculated from these pressure values. Compliance Ca=ΔV/ΔP and volume elastic modulus $$E_v = \Delta P/(\Delta V_a /\bar V_a )$$ were recorded at various Pt levels, controlled by the compression pressure. Although this is a kind of impedance plethysmograph, the volume change in a limb segment can be detected by this method without passing electric current through the limb.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02441465
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  • 8
    Electronic Resource
    Electronic Resource
    Ambulatory monitoring of indirect beat-to-beat arterial pressure in human fingers by a volume-compensation method (1991)
    Springer
    Medical & biological engineering & computing 29 (1991), S. 55-62 
    Details
    ISSN: 1741-0444
    Keywords: Ambulatory measurement ; Digital artery ; Indirect sphygmomanometry ; Instantaneous arterial pressure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract Using a volume-compensation technique, a portable device has been designed for the indirect measurement of beat-to-beat arterial pressure and its waveforms in the basal phalanx of fingers of ambulatory subjects. The device consists of (1) a transmission infra-red photoelectric plethysmograph (TIPP) to detect the variation of arterial volume, (2) a pneumatic cuff with an actuator, (3) a servosystem to control the cuff pressure, and (4) a stereo cassette tape recorder. Arterial pressure was determined from the cuff pressure which was controlled by the servosystem so as to maintain the arterial volume constant at the ‘vascular unloading’ state. This device is equipped with a compensator for any hydrostatic pressure difference between the heart and finger. Thus, the blood pressure at heart level can be obtained for any finger height. The total weight of the device was 1·6kg. Blood pressure changes during walking, jogging, jumping, and exercises such as side-stepping, Master's two-step test and car driving, have been successfully recorded.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02446296
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  • 9
    Electronic Resource
    Electronic Resource
    Long-term ambulatory monitoring of indirect arterial blood pressure using a volume-oscillometric method (1985)
    Springer
    Medical & biological engineering & computing 23 (1985), S. 459-465 
    Details
    ISSN: 1741-0444
    Keywords: Microprocessor-based portable instrument ; Noninvasive ambulatory monitoring ; Systolic and mean arterial pressure ; Volume-oscillometric method
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract A new portable instrument equipped with a microprocessor was designed for the long-term ambulatory monitoring of indirect arterial pressure in the human finger at desired intervals using a volume-oscillometric technique. All the necessary procedures such as (1) programmed control of cuff pressure, (2) detection of the systolic end-point and the point of maximum amplitude of arterial volume pulsations, (3) reading of the cuff pressures corresponding to these two points, (4) its processing and (5) recording of the systolic and mean pressure together with heart rate on a digital memory integrated circuit were performed automatically. After the monitoring, the data were reproduced and analysed by a conventional personal computer. Simultaneous comparison of the data with direct measurement, operation and evaluation of this instrument, and ambulatory monitoring were carried out. With this instrument noninvasive and accurate monitoring of arterial pressure could be made in unrestricted subjects during daily activities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02448934
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