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  • 1980-1984
  • 1975-1979
  • 1970-1974  (9)
  • 1950-1954
  • 1930-1934  (5)
  • 1970  (9)
  • 1931  (5)
Material
Years
  • 1980-1984
  • 1975-1979
  • 1970-1974  (9)
  • 1950-1954
  • 1930-1934  (5)
Year
  • 1
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Forty-one patients with a diagnosis of possible hydatidiform mole were studied by HCG, oestrogen and pregnanediol determinations performed on 24-hour collections of urine. The results were compared with those obtained in a control series involving 5000 HCG analyses, 679 oestrogen analyses and 1080 pregnanediol analyses performed over the relevant period of gestation in single pregnancies which produced surviving infants. Of the 17 patients who were shown to have a hydatidiform mole, 8 (47 per cent) had high HCG levels, 5 (29 per cent) had oestrogen levels below the first percentile for the control series and 5 of 13 patients had low pregnanediol levels (38 per cent). Five of the nine patients with molar pregnancies associated with normal HCG excretion had oestrogen excretion below the first percentile and one of the remaining four with normal oestrogen values had non-pregnancy levels of pregnanediol. Thus the diagnosis of an abnormal pregnancy could be made in 14 of the 17 molar pregnancies studied (82 per cent). Two of the three exceptions had a fetus co-existent with the mole. There were no viable pregnancies when the oestrogen and pregnanediol values were below the first percentile. Oestrogen and/or pregnanediol values in the range consistent with multiple pregnancy were found in four patients with molar pregnancies. In the molar pregnancies there was a correlation between the levels of HCG and the levels of oestrogens and pregnanediol excreted. After evacuation of the mole, the levels of oestrogens and pregnanediol remained elevated for up to three weeks in approximately half of the patients, whereas the HCG levels fell immediately. These findings support the view that in molar pregnancies, levels of oestrogens above 300 μg. per 24 hours and of pregnanediol above 10 mg. per 24 hours are derived mainly from the stimulation of theca lutein cysts in the ovaries.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 77 (1970), S. 0 
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Fifty-five patients admitted to hospital with the diagnosis of threatened abortion were assessed by means of urinary oestrogen, pregnanediol and chorionic gonadotrophin assays and by vaginal cytology. Oestrogen excretion was abnormally low (below the first percentile for the period of gestation) in 22 patients all of whom aborted, usually within a week of the measurement. Twenty-two of the 33 patients with oestrogen values in the normal pregnancy range had pregnancies which continued and resulted in surviving infants. Eleven patients with normal oestrogen values subsequently aborted. These abortions occurred more than one week after the original assessment and usually in the second trimester. Pregnanediol measure ments provided comparable information. In patients who aborted, vaginal cytology and initial chorionic gonadotrophin levels were less useful investigations.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Macromolecules 3 (1970), S. 265-267 
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Ecology, Evolution, and Systematics 1 (1970), S. 239-262 
    ISSN: 0066-4162
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 26 (1970), S. 1178-1183 
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] More recent studies6 have established that alteration of heterologous IgG either by heat aggregation or by complex-ing as antibody with specific antigen is necessary for its localization in the germinal centres of auricular lymph nodes of normal guinea-pigs after injection into the ear. Such ...
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 226 (1970), S. 610-612 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A unique interaction between eukaryotic Met-tRNAF*, AUG and 80S ribosomes is demonstrated. It is suggested that tRNAF*Met is the only initiator tRNA on 80S ribosomes and that AUG and possibly GUG are the initiator ...
    Type of Medium: Electronic Resource
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  • 8
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    New York : Periodicals Archive Online (PAO)
    Current history and Forum. 34:4 (1931:July) 517 
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Psychological research 14 (1931), S. 199-232 
    ISSN: 1430-2772
    Source: Springer Online Journal Archives 1860-2000
    Topics: Psychology
    Notes: Summary In this section it is concluded that velocity is perceived directly and is dynamically conditioned by the structure and general properties of the visual field in which the movement occurs. The visual perception of velocity follows dynamic laws that are not immediately deducible from the velocity of the stimulus as physically defined. No physiological theory is offered but it is pointed out that the theory of physiological Gestalten is essentially correct in its basic assumptions concerning the perception of movement. The investigation has bearing on the problems of movement thresholds, movement after-images and the perception of time.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Psychological research 14 (1931), S. 233-248 
    ISSN: 1430-2772
    Source: Springer Online Journal Archives 1860-2000
    Topics: Psychology
    Description / Table of Contents: Zusammenfassung 1. Da früher von uns bewiesen wurde, daß die phänomenale Geschwindigkeit nicht in einfacher Weise von der Reizgeschwindigkeit abhängt, daß also phänomenale Geschwindigkeit nicht proportional dem Quotienten Weg/Zeit ist, wenn Weg und Zeit im physikalischen Raum der Reizbewegung gemessen werden, so wurde die Hypothese aufgestellt, es sei phänomenale Geschwindigkeit gleich dem Quotienten phänomenaler Weg/phänomenale Zeit v=s/t. Die Richtigkeit dieser Gleichung wurde auf die folgende Weise bewiesen: 5 Fälle, in denen eine Variation der Struktur des Bewegungsfeldes eine Variation der phänomenalen Geschwindigkeit bewirkt, wurden herausgegriffen und daraufhin untersucht, ob in ihnen der Geschwindigkeitsveränderung entsprechende Veränderungen der phänomenalen Zeit, bzw. des phänomenalen Weges auftreten. Diese Versuche verliefen positiv. Quantitativ stimmten die gemessenen Werte mit den Werten überein, die wir unter Voraussetzung der obigen Gleichung aus dem früher festgestellten Verhalten phänomenaler Geschwindigkeiten berechnet hatten. Daraus folgt, daß alle die Strukturfaktoren, die die phänomenale Geschwindigkeit vergrößern, entweder den phänomenalen Weg vergrößern oder die phänomenale Zeit verkürzen. 2. In der überwiegenden Zahl der Fälle ist die Veränderung der phä-nomenalen Zeit die Ursache der Veränderung der phänomenalen Geschwindigkeit. Daraus schließen wir, daß der Eindruck der Dauer, den wir bei der Betrachtung bewegter Objekte gewinnen, von den Eigenschaften des Feldes abhängt, in denen die Bewegung stattfindet. 3. Diese Veränderungen im Fluß der phänomenalen Zeit sind nicht isolierte, als bloße Täuschungen erklärbare Fälle. Vielmehr lassen sich stetige Veränderungen der phänomenalen Zeit durch fast beliebige Veränderungen in der Struktur des Bewegungsfeldes bewirken. 4. Die Zeit einer Bewegung (ausgefüllte Zeit) ist im ganzen phä-nomenal länger als Zeit, die von zwei Grenzreizen markiert wird (leere Zeit). Dieses Verhältnis hängt aber natürlich von der Struktur des Feldes ab, in dem die Bewegung abläuft.
    Notes: Summary and conclusions 1. The equation, phenomenal velocity=phenomenal space/phenomenal time-, v=st, was proven in the following manner. Five cases where variation in the structure of the movement field causes variation in the phenomenal velocity were tested to find out if to the variation in phenomenal velocity corresponding variation in phenomenal time (or phenomenal space) of the movement were to be found. The results of these tests were in close agreement, with the values predicted, from the facts known about phenomenal velocity, on the supposition that the equation held. From this it is concluded that all those structural variations that increase the phenomenal velocity of a movement either increase the phenomenal space or shorten the phenomenal time for equal space correspondingly 2. 2. In far the greater number of cases, the variation is caused in the phenomenal time, and hence it is concluded that impression of duration gained by watching objects in visual movement fields is conditioned by the properties of the field in which the movement occurs. 3. These variations in the flow of phenomenal time are not isolated cases which could be explained as illusions, but are continuous variations conditioned by practically any change in the structure of the movement field. 4. Time where there is movement (filled time) is on the whole phenomenally longer than time marked off by disparate stimuli (unfilled time). This ratio varies, however, in accordance with the structure of the field in which the movement (filled time) occurs.
    Type of Medium: Electronic Resource
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