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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 26 (1971), S. 0 
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 25 (1970), S. 0 
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
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    Unknown
    London, etc. : Periodicals Archive Online (PAO)
    Slavonic and East European review. 36 (1957/1958) 396 
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    European archives of psychiatry and clinical neuroscience 214 (1971), S. 137-149 
    ISSN: 1433-8491
    Keywords: Memory and Forgetting ; Memory Deficit ; Guessing Test ; Information Theory ; Gedächtnis und Vergessen ; Mnestische Leistungsschwäche ; Ratetest ; Informationstheorie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung 15 Gesunde und 15 ausgewählte Patienten mit mnestischer Leistungsschwäche wurden mit einer modifizierten Ratetechnik nach Shannon untersucht. Verbale transitive Inventare dienten zur informationstheoretischen Darstellung von Text-Entropie und Vergessen. Gleiche Textwörter-Mengen wurden zu bestimmten Zeiten entweder von verschiedenen Probanden nur je einmal, oder von jeweils gleichen Probanden wiederholt erraten. Gesunde organisieren das Material: hohe Informationsbeträge werden unmittelbar schwerer behalten, daher mehr wiederholt und so durch Übung besser gelernt als informationsarme Angebote. Mnestische Leistungsschwäche ist nicht nur ein Ausfall des Behaltens, sondern ein Leistungswandel des Auffassens. Dieser behindert das Lernen als Übungseffekt wiederholter Reproduktionen. Diese experimentelle Darstellung von „Organisation“ und „Leistungswandel“ präzisiert frühere gestaltpsychologische Anschauungen. Das Vergessen ist nicht einfach mit einem Verschwinden zuvor gewußter Informationsmengen gleichzusetzen. Das Entropieprofil des zu merkenden Materials bestimmt neben der Zeit und den Motivationen des Auffassens auch die mnestische Stabilität. Das Vergessen wird als eine Bedingung der Lernens, Umlernens, und Anpassens aufgefaßt.
    Notes: Summary Fifteen normal subjects (Ss) and 15 selected patients with memory deficits were examined with the aid of a modified Shannon Guessing Test. Verbal transitive inventories were used as data to serve as an information-theory model of text-entropy and forgetting. Equal numbers of text-words were guessed only once at certain times by different participants or guessed repeatedly by the same participant. Normal Ss organize the learning material in the following way: Material with a high information value is more difficult to be stored immediately; it is therefore repeated more and in the end learned better than material with low information value. Memory impairment comes about not only through a loss of retention but also through a change in the ability to perceive learning material. This change interferes with learning brought about by practising repeated reproductions. This experimental presentation of “organization” and “change of ability” defines some earlier views in “Gestalt-psychology” more precisely. The entropy profile of learning matter determines not only the time and the motivations necessary for perception, but also the stability of memory. Forgetting is thought of as a necessary condition for learning, relearning, and adaptation.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Plant and soil 10 (1958), S. 176-182 
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Gypsum at rates of 0, 25, 50 and 100 and 200 lb per acre was applied to a grass-legume association, and the effects on the yields of dry matter, nitrogen and sulphur were followed for four seasons. Pronounced residual effects were noted and had not completely disappeared by the last harvest. Underground transference of nitrogen from clover to grass over the four years was about equal to the nitrogen harvested in the clover. Of the sulphur applied, 80, 80, 50 and 30 per cent were recovered from the 25, 50, 100 and 200 lb rates of gypsum respectively. Eight to twelve pounds of nitrogen were fixed for each pound of sulphur recovered.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary 1. Gypsum was applied at various levels to a grass-clover association, and its effect noted on the yields and composition of both components. 2. Both clover and grass responded markedly and a three-fold increase in dry matter and a four-fold increase in yield of N were noted. 3. The extra nitrogen in the grass was shown to have been derived almost certainly by underground transference from the clover, the amount involved approximating to the amount of N retained in the aerial part of the clover. 4. Whilst a high proportion of the S applied was recovered at rates up to 50 lb gypsum per acre, a low recovery was obtained from greater applications, and as residual SO4 was very low, it is presumed that SO4 was readily leached during one or two periods of heavy summer rainfall. The ease with which SO4 is lost by leaching may merit attention to forms, times and rates of application of S. 5. Nearly all the S in the clover was organic, whereas a big fraction of the S in the grass was SO4-S. In regions where atmospheric returns of S are small and where no S is being made available from the weathering of S-containing minerals, S must be applied in some form or other to promote optimum N-fixation by legumes as grass may utilise almost all the mineral N and S made available from soil organic matter. 6. Over large areas of the South Island of New Zealand it is doubtful if more than 1 lb S per acre is returned annually from the atmosphere and the application of S is of some considerable importance to promote N-fixation by clovers and hence high production from grass-clover associations.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Plant and soil 9 (1958), S. 353-366 
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary A 3 × 3 factorial experiment with nitrogen and sulphur fertilizers was carried out on a grass-clover association in an area where there is little if any cyclic return of sulphur. In the absence of sulphur, grass took up 98 per cent of the total uptake of sulphur, and nitrogen fixation by associated clover was negligible. In the absence of fertilizer nitrogen, dressings of sulphur as gypsum stimulated clover growth; at a low rate of application of sulphur, nitrogen fertilizer increased grass growth and clover was suppressed. This suppression was largely overcome with a higher dressing of sulphur. Sulphur therefore must be added to the group of elements (phosphorus, nitrogen and potassium) for which grass may compete intensely when grown with clover and when nitrogen fertilizers are applied to a grass-clover association adequate supplies of sulphur must be assured in order to minimise suppression of clover. Sulphate of ammonia may stimulate clover growth under these conditions. Solubility of gypsum was low in a dry season and residual effects were pronounced.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    The @Anatomical Record 131 (1958), S. 445-463 
    ISSN: 0003-276X
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 0003-276X
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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