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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Nuclear Engineering and Design 145 (1993), S. 403-417 
    ISSN: 0029-5493
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1590-3478
    Keywords: mPICA infarction ; Magnetic resonance imaging ; Digital subtraction angiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Sommario Descriviamo il caso di un infarto bilaterale nel territorio delle branche mediali della arteria cerebellare postero inferiore (mPICA). La paziente, una donna di 57 anni, non aveva fattori di rischio per cerebropatia vascolare, eccettuata una lunga storia di ipertensione arteriosa. Sono state formulate diverse ipotesi patogenetiche in grado di giustificare questo inusuale sito di lesione: A) due PICA che originino da una arteria basilare occlusa; B) entrambe le branche mediali che originino dalla stessa PICA in un lato; C) una genesi emodinamica con una ipoperfusione nelle branche più periferiche delle arterie; D) un doppio simultaneo stroke embolico nel territorio delle mPICA. Sulla base del decorso clinico e degli esami strumentali (Ecodoppler dei vv. epiaortici, ecocardiogramma, RM, angioRM, TC ed angiografia digitale intrarteriosa) nessuna di queste ipotesi può essere singolarmente considerata come responsabile della lesione. Proponiamo, quindi, che una anastomosi tra le PICA debba rappresentare la necessaria predisponente condizione sulla quale siano poi intervenuti ulteriori fattori determinanti l'evento ischemico acuto.
    Notes: Abstract We present an unusual case of simultaneous bilateral cerebellar infarction in the territory of the medial and intermediate branches of the posterior inferior cerebellar arteries (mPICA). The patient, a 57-yr old woman, had no risk factors for cerebrovascular disease but a long-standing hypertension. Pathogenetic hypotheses of this unusual ischemic site of lesion may be referred to: A) two PICAs arising from an occluded basilar artery; B) both medial branches arising from the same PICA on one side; C) a haemodynamic mechanism with hypoperfusion in the most peripheral branches of the arteries; D) a double, simultaneous embolic stroke in mPICAs territory. Based on clinical course, supraortic duplex-scan, echocardiography, MRI, angioMRI and CT scans, and digital subtraction angiography, none of these hypotheses could be clearly associated with the pathogenesis of the lesion. Nevertheless, we propose that an anomalous common mPICA for both cerebellar territories should represent the necessary condition for the ischemic insult and, simultaneously, other factors should intervene as possible determining events.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Neurological sciences 21 (2000), S. 49-52 
    ISSN: 1590-3478
    Keywords: Key words Parkinsonism ; n-hexane ; Solvents
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Recently, some case-control studies and case reports have shown an association between solvent exposure and parkinsonisms. We present a 55-year-old male parkinsonian patient with chronic exposure to n-hexane for 17 years. The results of neurophysiological (electromyography, evoked potentials), neuroradiological (MRI) and neurophychological tests performed on the patient suggest a role of this solvent at the level of the central nervous system. Biological subceptibility to neurotoxic compounds is discussed briefly.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 24 (1968), S. 1267-1268 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Riassunto In cellule di leucemia acuta umana incubate in vitro viene osservata una rapida degradazione dell'ARN sintetizzato prima del contatto actinomicinico e vengono distinte 2 varietà di RNA a differente labilità metabolica. Uno stesso comportamento metabolico è stato osservato negli elementi blastici proliferanti e nonproliferanti.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Riassunto Negli elementi blastici di leucemia acuta umana incubati in vitro viene osservato un dimezzamento delle sintesi proteiche fra la prima e la seconda ora di contatto actinomicinico. Uno stesso comportamento metabolico è stato rilevato negli elementi blastici proliferanti e non proliferanti.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of neurology 247 (2000), S. 114-121 
    ISSN: 1432-1459
    Keywords: Key Words Cognition ; Emotion ; Parkinsonism ; Dementia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract This paper reviews the main neuropsychological features of movement disorders such as Parkinson’s disease (PD), progressive supranuclear palsy (PSP), multiple system atrophy (MSA), Huntington’s disease (HD), corticobasal degeneration (CBD), and diffuse Lewy body disease (DLBD). These neurodegenerative disorders all share a prominent frontal lobe-like syndrome which can be explained by damage to connections between the basal ganglia and the cortical areas involved in movement, and in behavioural and mood control. In this paper different types of cognitive and mood alteration are described in an attempt to identify additional reasons for the differential diagnosis of parkinsonism-like syndromes.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 15 (1980), S. 685-699 
    ISSN: 0029-5981
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: The choice on an efficient direct integration procedure for linear structural dynamic equations of motion is discussed. It is suggested that as accuracy parameter the truncation error on the exponential terms contained in the modal contributions of the exact solution be assumed. This error does not always coincide with the local truncation error. These considerations were used to design an unconditionally stable one-step method whose accuracy is 0(h4). Numerical comparisons with some well-known integration schemes showed the efficiency of the proposed method.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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