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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 13 (1965), S. 418-423 
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 53 (1931), S. 3453-3461 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-0428
    Keywords: Diabetic retinopathy ; glucose ; vessel calibre ; fluorescence angiography ; autoregulation ; cats
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The retinal microcirculation of anaesthetised normal cats was studied during hyperglycaemia (15 to 55 mmol/l) induced by intravenous infusion of glucose, using high speed cine fluorescence angiography. Saline (0.150 mmol/l) was infused as a control for the volume effect of glucose solution and equiosmolar mannitol was infused as a control for the osmotic effect. The mean retinal arteriolar inflow rate increased from 34±1 mm/sec to 41±4 mm/sec during glucose infusion, and from 46±1 mm/sec to 56±3 mm/sec during mannitol infusion. The blood pressure similarly increased from 105±5 mmHg to 125±2 mmHg during glucose infusion and from 110 ±7 mmHg to 129±1 mmHg during mannitol infusion. During mannitol infusion the increased inflow was accompanied by a reduction in the arteriolar width so that the volume flow remained unchanged. During glucose infusion this constriction did not occur, resulting in a significantly increased volume of retinal blood flow (9±1 μl/min to 12±1 μl/min).
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Environmental geology 25 (1995), S. 181-191 
    ISSN: 1432-0495
    Keywords: Subsidence ; Eustatic sea level rise ; Relative sea level rise ; Coastal erosion ; Deep hydrocarbon production
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The Texas Gulf of Mexico coast is experiencing high (5–11 mm/yr) rates of relative sea level (RSL) rise that are the sum of subsidence and eustatic sea level (ESL) rise. Even higher rates are associated with areas of groundwater pumping from confined aquifers. We investigate the possibility of deep petroleum production as a cause for the high regional rates of subsidence. The northeast Texas coast was chosen for the study because it has a high rate of RSL rise, very limited groundwater production, and a long history of petroleum production. We examine in detail the Big Hill and Fannett fields, for which adequate bottom hole pressure (BHP) and well log data are available. The hypothesis of deep petroleum production is tested in three ways. First, industry BHP tests show many of the fields are depressurized to far below hydrostatic pressures. Second, analysis of BHP data over time in the Big Hill and Fannett fields indicates that some Zones in these fields were below hydrostatic when production commenced. This indicates that depressurization from production in neighboring fields or zones within the same field is not limited to the production zone. Third, three models for subsidence (a general 1-D regional model, an intrareservoir model, and a reservoir bounding layer model), using reasonable hydrogeological parameters, predict subsidence within the inferred range of data. The latter two models use data from the Big Hill and Fannett fields. Additional verification of the hypothesis that deep petroleum production is causing or accelerating regional subsidence will require the collection and analysis of data on the subsurface hydrogeological parameters and detailed measurements of the spatial and temporal distribution of subsidence along the Texas Coast.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 186 (1960), S. 1045-1045 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] For the separation of oxygen and nitrogen we have employed a column 12 in. long and £ in. internal diameter packed with 52-60 B.S. mesh Linde 5A molecular sieve at room temperature. Samples can be analysed at 30-sec. intervals. Carbon dioxide and nitrous oxide are commonly encountered in ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 184 (1959), S. 1071-1072 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In order to study further the alleged paralyzing effect upon respiration of high concentrations of carbon dioxide, we progressively raised the concentration of this gas in the mixture (carbon dioxide + oxygen -J- anaesthetic) inhaled by dogs anaesthetized with a barbiturate, cyclopropane or ...
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 189 (1961), S. 488-489 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Conventional methods of estimating di-ethyl ether1, chloroform and trichloroethylene2 and halothane3 are unsatisfactory because they require relatively large samples, lack specificity, and are time-consuming. With these methods concentrations less than 10 p.p.m. are difficult to estimate. Mass or ...
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 217 (1968), S. 963-964 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Accordingly twenty volunteers were invited to drink varying quantities of alcohol in the form of whisky or gin during a period of up to 1 h. A blood sample of approximately 20 ml. was then withdrawn from a superficial vein on the forearm. Part of the sample was used to derive the alcohol content of ...
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-1238
    Keywords: Thoracic impedance ; Haemorrhage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The correlations between the haemodynamic and transthoracic electrical impedance changes resulting from a progressive reduction in the circulating blood volume were studied in four intact mongrel dogs artificially ventilated with a mixture of halothane in nitrous oxide-oxygen. The cardiac output of the dogs was measured by both the electrical impedance and the fibre optic dye dilution techniques. It was found that significant correlations existed between the blood loss and the arterial blood pressure, the maximum first derivative of the transthoracic impedance, the Heather Index, the transthoracic impedance, the maximum rate of change of aortic pressure and the cardiac stroke work. There was also a good correlation between the dye and impedance cardiac output values, the impedance value always being higher than the corresponding dye value. The correlation between the Heather Index and the PEP/LVET ratio and 1 /PEP2 varied markedly from dog to dog.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Diabetologia 3 (1967), S. 402-405 
    ISSN: 1432-0428
    Keywords: implantation ; assessed ; gradings ; improve ; irregularities ; equivalent ; comparing ; categories ; ablation ; deteriorate ; declined ; effective
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Les auteurs décrivent une méthode d'évaluation de la rétinopathie diabétique utilisant des photographies prises dans les conditions standard. — Cinq lésions caractéristiques de la rétinopathie diabétique, soit les micro-anévrysmes et hémorragies, les exsudats, les néovaisseaux et la rétinite proliférante, sont considérés séparément. Quatre photographies standard permettent une classification en cinq degrés de gravité. L'ensemble de ces photographies standard utilise un film de 20 diapositives de 35 mm Kodachrome. — Cette technique a fourni des résultats comparables durant une période d'essai, particulièrement lorsque les clichés étaient soumis à des observateurs familiers de ce procédé.
    Abstract: Zusammenfassung Es wird eine Methode beschrieben, die mit Hilfe von Standard-Photographien des Augenhintergrundes eine zuverlässige Einstufung verschiedener Schweregrade der diabetogenen Retinopathie ermöglicht. — Dabei werden fünf ophthalmoskopische Besonderheiten diabetischer Fundusveränderungen (Mikroaneurysmen und Netzhautblutungen, Exsudatherde, Gefäßneubildungen, Veränderungen an den Netzhautvenen und Retinitis proliferans) voneinander unabhängig bewertet und jeweils in fünf Schweregrade eingeteilt. — Die Anwendung des beschriebenen Auswertungsmodus durch verschiedene erfahrene Untersucher ergab weitgehend übereinstimmende Beurteilungsergebnisse.
    Notes: Summary A method for grading diabetic retinopathy using standard photographs is described. — Five retinopathy components — microaneurysms and haemorrhages, exudates, new vessels, venous irregularities and retinitis proliferans — are treated independently and for each component, four standard photographs allow grading into five grades of severity. The whole set of standard photographs consists of twenty 35 mm Kodachrome transparencies. — During a trial the method gave consistent results, particularly in the hands of observers familiar with the technique.
    Type of Medium: Electronic Resource
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