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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Biochemistry 20 (1981), S. 5779-5787 
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 39 (1984), S. 0 
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Two patients who developed sleep apnoea following upper cervical cord surgery are described. The underlying mechanisms and management of the sleep apnoea syndrome are discussed.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 39 (1984), S. 0 
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Paroxysmal supraventricular tachycardia is a common cardiac dysrhythmia which may or may not be associated with heart disease. The underlying mechanisms in the genesis of this dysrhythmia are alterations in automaticity or re-entry of the cardiac impulse. These mechanisms are reviewed in the context of the stresses of the peri-operative and operative periods. The anaesthetic management of three patients, particularly prone to paroxysmal supraventricular tachycardia, is described based on principles derived from the pathophysiology of re-entrant or ectopic atrial tachydysrhythmias.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Sedimentology 27 (1980), S. 0 
    ISSN: 1365-3091
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Calcrete profiles (caliche) have been recognized in the Eyam Limestone from the Lower Carboniferous in the area around Monyash, Derbyshire. They occur at the top of the flank facies surrounding carbonate-mud buildups (‘knoll reefs’). Four units make up the complete profile. These are from base to top: (1) grain-supported sediment with rhizocretions, (2) matrix-supported sediment with alveolar texture, (3) pelleted calcrete, (4) laminar calcrete. Commonly one or more units are missing from the profile. Calcretes indicate subaerial exposure. The carbonate buildups of the Eyam Limestone were completely exposed soon after deposition, requiring a fall in sea-level probably in excess of 10 m. This discovery demands a review of previous regional palaeoenvironmental studies.
    Type of Medium: Electronic Resource
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  • 5
    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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  • 6
    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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  • 7
    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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  • 8
    ISSN: 1432-1971
    Keywords: Technetium angiocardiography ; Left-to-right intracardiac shunts
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Pulmonary to systemic flow ratios (Qp/Qs) were estimated by quantitative radionuclide angiocardiography (QRAC) in 135 children. The Qp/Qs ratios were derived from pulmonary time/activity curves using a gamma variate model. Eighty-five of these children also had Qp/Qs ratios estimated by oximetry at cardiac catheterization. Left-to-right shunts with a Qp/Qs range of 1.2 to 3.0 were detected and quantitated by radionuclide angiography with an accuracy similar to that for oximetry. The correlation between Qp/Qs, determined by QRAC and by oximetry was good (r=.93; SEE .31). This relatively noninvasive technique has now been used to estimate the Qp/Qs ratio in 34 children with a clinically suspected left-to-right shunt, and postoperatively in 16 cases with residual murmurs; it has obviated the need for catheterization in many of these patients. The technique may also be used serially to determine changes in the Qp/Qs ratio in patients with known left-to-right shunts.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Neurosurgical review 3 (1980), S. 201-203 
    ISSN: 1437-2320
    Keywords: Basal ganglia ; Cranial computerized tomography ; Intracranial calcification ; Basalganglien ; Craniale Computertomographie ; Intracraniale Verkalkungen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Intracraniale Verkalkungen kommen bei zahlreichen Krankheiten vor. Beiderseitige idiopathische Kalkablagerungen finden sich zumeist im Globus pallidus. Zur Entdeckung intracranialer Verkalkungen ist die Computertomographie den konventionellen Röntgenaufnahmen des Schädels überlegen. Die Symptome der Patienten waren aber oft durch ganz andere Befunde begründbar. Verkalkungen in Basalganglien bilden keine nosologische Einheit und sie sind kein alleiniger Grund zu invasiven diagnostischen Maßnahmen.
    Notes: Summary Intracranial calcifications are attributed to many diseases. The globus pallidus is almost always the site of bilateral idiopathic calcium deposits. Computed tomography is superior to conventional skull radiographs in detecting intracranial calcifications. Patients had symptoms that were often explained by other findings. Basal ganglia calcification alone is not a nosological entity and does not justify invasive diagnostic procedures.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Hydrobiologia 88 (1982), S. 57-66 
    ISSN: 1573-5117
    Keywords: Rutland Water ; archaeological excavation ; Iron Age ; Romano British ; Medieval ; Anglo Saxon
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract This paper summarises the results of archaeological excavations on the Rutland Water site from 1967 to date. They range from Iron Age to Medieval and include Romano-British farmsteads and two Anglo-Saxon cemeteries.
    Type of Medium: Electronic Resource
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