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  • 1
    Electronic Resource
    Electronic Resource
    Fractionation of Cell Suspensions in an Electromagnetic Force Field (1958)
    [s.l.] : Nature Publishing Group
    Nature 182 (1958), S. 510-512 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE effectiveness of centrifugation as a method of fractionation of aqueous suspensions of cells and of cell debris is limited by the fact that the densities of these biological materials differ but little from each other and from the density of the suspension fluid. The effective electrical ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/182510a0
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Electromagnetic Observations of Carotid Blood Flow Changes in the Conscious Rat in Response to Sensory Stimuli (1964)
    [s.l.] : Nature Publishing Group
    Nature 201 (1964), S. 573-574 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] UNTIL recently, the cat was the smallest animal in which continuous recording of blood flow by the electromagnetic method in an artery of minor size (carotid) had been undertaken1. The modification of the method used was that based on a 400-c/s sinusoidal current energizing the magnet1,2. The ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/201573a0
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Unit proposal (1976)
    [s.l.] : Nature Publishing Group
    Nature 259 (1976), S. 264-264 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR,-We would like to propose a unit for electrophoretic mobility (") to replace the current practice of specifying it, for example, as follows: u=- 2.45X105 cms'VVcirT1 (+ for cations, - for anions). In honour of Arne Tiselius, who has done more than anyone else to advance electrophoretic ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/259264c0
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Magnification of resolution of electrophoretic sorting patterns (1955)
    Springer
    Naturwissenschaften 42 (1955), S. 367-368 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00629015
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    A system for intravascular, radially orientation-independent electromagnetic flow- and diameter-sensing (1977)
    Springer
    Pflügers Archiv 372 (1977), S. 109-111 
    Details
    ISSN: 1432-2013
    Keywords: Flow meter ; Electromagnetic flow meter ; Blood flow ; Diameter ; Vascular diameter ; Catheter flow meter ; Angiometer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The difficulty of optimally orienting an intravascular loop probe of an extracorporeal field electromagnetic flow meter is circumvented by uniting 2 mutually perpendicular loop sensors into a single flow-diameter probe. When one of the loops is unfavorably oriented in the magnetic field, the orientations of the other loop is more favorable. The most unfavorable case is a 45° angle between the magnetic field and the planes of the loops, when the signal drops to 70.7% of the optimal value. By taking the square root of the sum of the squares of the 2 loop transducer signals, one obtains an output for flow and diameter measurements which is independent of the probe orientation. This operation can be accomplished electronically.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00582215
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  • 6
    Electronic Resource
    Electronic Resource
    Extracorporeal magnet perivascular electromagnetic flow meters (1976)
    Springer
    Pflügers Archiv 362 (1976), S. 279-283 
    Details
    ISSN: 1432-2013
    Keywords: Electromagnetic flowmeter ; Flowmeter ; Blood flow ; Perivascular flow probe ; Extracorporeal magnet ; External magnetic field
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The “interrupted resonance” circuit proved effective in combination with an extracorporeal magnet in permitting electromagnetic blood flow measurements to be made in branch arteries of dogs by application of perivascular cuffs equipped with pick-up electrodes contacting the vessel wall. A four-turn coil, acting as a transformer secondary measures the amplitude of the magnetic field component which is effective in inducing the flow signal and thus permits calibrations for arbitrary orientations of the perivascular cuff relative to the magnetic field of the extracorporeal magnet. Recordings of mean and phasic blood flow in dogs' arteries provide illustrations of effectiveness in pharmacological studies and exhibit the reliability of the non-occlusive zero-flow base line obtained by de-energizing the magnet.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00581182
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  • 7
    Electronic Resource
    Electronic Resource
    External field electromagnetic measurement of blood flow (1972)
    Springer
    Pflügers Archiv 337 (1972), S. 257-263 
    Details
    ISSN: 1432-2013
    Keywords: Electromagnetic ; Flow Meter ; Blood Flow ; Cardiac Output ; Arterial Diameter ; Catheter ; External Field ; Percutaneous
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary An electromagnetic intravascular rate of volume flow meter of minimal dimensions is described. It is activated by an extracorporeal magnetic field. The location at the apex of the aortic arch minimizes ECG artifacts and circumvents the problem of securing a zero-flow baseline which is given by the lowest mid-diastolic flow level. The magnetic field at the electrodes is maximized by placing the subject axially into the magnetic coil. The flow transducer also offers a means of measuring the artery diameter and its pulsations. The electromagnetic flow measurements of cardiac output agree within about 20% with dyedilution technique determinations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00586849
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Stem compensation of loop sensors for electromagnetic blood flow and vascular diameter measurement (1980)
    Springer
    Pflügers Archiv 386 (1980), S. 93-94 
    Details
    ISSN: 1432-2013
    Keywords: Catheter flow meters ; Compensation ; Electromagnetic probes ; Angiometer compensation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Accuracy of electromagnetic blood flow —and vascular diameter — measurements by means of intravascular loop probes in an extracorporeal alternating magnetic field can be impaired by an error signal induced in the probe stem. The standard method of removing this artifact by twisting the lead wires is difficult to implement in this case because the wires are bifilar and are made of highly resilient metals. The solution described here makes use of a hair pin loop incorporated within the probe stem in which an e.m.f. is induced that can be used to cancel the unwanted e.m.f. induced in the lead wires of the loop of the sensor. This scheme is applicable to simple loop probes as well as to orthogonal double-loop sensors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00584193
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  • 9
    Electronic Resource
    Electronic Resource
    Recollections  -  encounters with scientists, successes and failures (1983)
    Weinheim : Wiley-Blackwell
    Electrophoresis 4 (1983), S. 1-19 
    Details
    ISSN: 0173-0835
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology
    Additional Material: 16 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/elps.1150040102
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