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  • Articles: DFG German National Licenses  (15)
  • 1985-1989  (12)
  • 1955-1959  (3)
  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 58 (1987), S. 1937-1941 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A highly sensitive, adiabatic titration calorimeter controlled by a personal computer is described. Operation of the entire calorimetric titration is automated, including the thermoelectric offset of the heat of stirring, the electrical calibration of the heat capacity, the addition of titrant, and the measurement of the heat of reaction. The average uncertainty in heat measurements was ≈±0.003 J for titrant additions generating 0.025 to 1.0 J of heat change in a 50-ml sample. Calibration of the calorimeter using tris-(hydroxymethyl) aminomethane [TRIS] gave excellent agreement with previously published values.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 54 (1989), S. 660-662 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have studied the effects of high-temperature anneals on sequentially deposited TlBaCaCu films in an environment containing O2 and TlOx . From Auger electron spectroscopy depth profiles, it was found that Tl was quite volatile and can be easily eliminated from the thin films after a short treatment at 830 °C. However, the Tl can be incorporated in the films after appropriate treatment.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 1221-1222 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] WHEN the dextran-producing organism Betacoccus arabinosaceous is grown on a medium containing sucrose and an appropriate second sugar (to serve as an acceptor of transferred glucose units) oligosaccharides are produced in appreciable quantities1. A particularly interesting example is the formation ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 177 (1956), S. 1125-1125 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] This alternative method of ionophoresis is a development of the technique of filter-paper chromatography in which reducing sugars are converted on the paper into N-benzylglyeosylamines2 ; in this case a charge is afterwards placed on the nitrogenous derivative by using a strongly acid solution as ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 183 (1959), S. 376-377 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN an investigation of the effect of y-radiation from a 200-c. cobalt-60 source on dilute (0-1 per cent) aqueous solutions of some carbohydrates, hydroxy-acids and amino-acids we have found that in the absence of oxygen (that is, in vacuo or under nitrogen), radicals1 derived from these compounds ...
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Diabetologia 29 (1986), S. 405-406 
    ISSN: 1432-0428
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-0428
    Keywords: Hypoglycaemia ; diabetes ; skin blood flow ; arteriovenous anastomoses ; thermoregulation ; vasopressin ; adrenaline ; laser doppler flowmetry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Body temperature falls during hypoglycaemia, perhaps as a protective mechanism. To test the hypothesis that the skin blood flow response to hypoglycaemia is specifically designed to facilitate heat loss we studied both nutritional blood flow and arteriovenous shunting of blood in skin during prolonged, controlled hypoglycaemia in man. We studied eight otherwise healthy, male, Type 1 (insulin-dependent) diabetic patients. Under Biostator control blood glucose was clamped at 8.0 (7.9–8.9), mmol/l (median and range) for 30 min, reduced to symptomatic hypoglycaemia, 1.7 (1.0–2.6) mmol/l for 20 min then raised to 4.9 (3.3–6.7) mmol/l. Interdigital skin web blood flow (laser doppler flowmeter, nutritional flow) fell during hypoglycaemia from 3.1 (2.2–3.8) to 2.4 (1.2–2.8) volts and remained depressed. In contrast, finger blood flow (venous occlusion plethysmography, arteriovenous shunt flow) started high at 54.7 (17.4–85.6), remained high at 52.7 (38.1–81.4) during hypoglycaemia but fell sharply to 25.3 (4.2–66.2) ml · min−1 · 100 ml−1 when symptoms were relieved. Plasma adrenaline and vasopressin both rose during hypoglycaemia from 0.4 (0.05–0.8) to 4.5 (2.3–20.2) nmol/l and from 0.5 (0.5–3.5) to 4.4 (2.0–13.9) pg/ml, respectively, and both fell sharply thereafter. Thus, the high skin blood flow observed during hypoglycaemia in man is due to arteriovenous shunting of blood and is consistent with a thermoregulatory mechanism.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-1238
    Keywords: Nitroglycerin spray ; Left ventricular failure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The use of sublingual nitroglycerin spray has been studied in twenty patients referred to our Intensive Care Unit for further treatment of severe left ventricular failure. Within five minutes of spray administration significant falls in pulmonary artery occlusion pressure, mean arterial pressure, heart rate, right atrial pressure and systemic vascular resistance occurred. Similarly significant increases in cardiac index, stroke volume index and left ventricular stroke work index were found. These results show a considerable improvement in the haemodynamic parameters of invasively monitored patients and we believe that its administration undoubtedly “buys time” for the critically ill patient. However, we would caution against its routine use at present in view of the potential problem of hypotension, until further information is available.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 67 (1987), S. 275-283 
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Complementing the work of Bednorz and Müller, which started the field of high temperature oxide superconductivity, the IBM Research laboratories at Yorktown Heights in Almaden have made contributions also via many outside collaborations across the full scope of this field. Materials work includes the identification, separation and structural characterization of the YBa2Cu3O7−x phase, the detection of superconductivity and antiferromagnetism in La2CuO4, and the deposition of YBaCuO films with transition temperatures above 77 K by electron-beam deposition and plasma spraying. Characterization work includes measurement of the superconducting energy gap by far-infrared and tunneling measurements, study of Meissner and diamagnetic shielding, observation of superconducting fluctuations, correlation of [Cu−O]+ complex concentration withT c, and determination of valence electronic structure by photoemission. Theoretical work includes proposal of an interband scattering mechanism for superconductivity, a mean-field solution to an electron-interaction model, band-structure calculations, and a phenomenological model for lattice parameters and their influence onT c. YBa2CU3O7−d single crystals have been synthesized and shown to exhibit up to 70:1 magnetic anisotropy. In work of relevance to applications, the first thin film SQUIDs have been operated in temperatures up to 68 K, epitaxial films on SrTiO3 have been found to sustain critical currents of more than 105 A/cm2 at 77 K, and coatings, superconducting above 77 K, have been deposited by plasma spraying.
    Type of Medium: Electronic Resource
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