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  • 11
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Respiration Physiology 10 (1970), S. 64-73 
    ISSN: 0034-5687
    Keywords: Breathing pattern ; Energy metabolism ; Pregnancy ; Temperature regulation
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 12
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Thermochimica Acta 225 (1993), S. vii 
    ISSN: 0040-6031
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 13
    ISSN: 1433-0407
    Keywords: Schlüsselwörter Dissektion ; Hirnnervenausfall ; Raeder-Syndrom ; Collet-Siccard-Syndrom ; Key words Dissection ; Cranial nerve deficiency ; Raeder's syndrome ; Collet-Sicard syndrome
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Acute cerebral nerve paresis can be caused in many different ways. One of the more rare causes of paresis of one or more neural pathways is dissection of the internal carotid artery. Early diagnosis is important, even with atypical symptoms, since prompt anticoagulative therapy can hinder stroke from embolism due to the dissection. We report on two patients with Raeder's syndrome and Collet-Sicard syndrome resulting from dissection of the internal carotid artery. Besides the cranial and caudal nerves involved in our study, loss of function has also been reported with the sixth to eighth cranial nerves, so that any painful, sudden cranial nerve deficiency can indicate possible carotid dissection
    Notes: Zusammenfassung Akute Hirnnervenparesen können eine Vielzahl von Ursachen haben. Seltener Auslöser einer Parese eines oder multipler Hirnnerven ist eine Dissektion der A. carotis interna. Die frühzeitige Erkennung einer Karotisdissektion auch bei untypischer Symptomatik ist wichtig, da eine rechtzeitig begonnene antikoagulatorische Therapie einen Schlaganfall als Folge einer dissektionsbedingten Embolie verhindern kann. Wir berichten über 2 Patienten mit Läsionen der parakavernösen Hirnnerven (Raeder-Syndrom) sowie der kaudalen Hirnnerven (Collet-Siccard-Syndrom) als Folge einer Dissektion der A. carotis interna. Neben den in unseren Fällen beteiligten kranialen und kaudalen Hirnnerven sind auch Ausfälle der mittleren Hirnnerven (VI–VIII) beschrieben worden, so dass jeder schmerzhafte plötzliche Hirnnervenausfall auch an eine Karotisdissektion denken lassen muss.
    Type of Medium: Electronic Resource
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  • 14
    ISSN: 1432-1254
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Notes: Abstract Some physiological and behavioural responses were observed in German Brown, Holstein-Friesian and White Fulani heifers during four different quarters of the year in an attempt to assess their adaptability to the seasonal equatorial climate of Southern Nigeria. Rectal temperatures under shade conditions showed slight but significant (P〈0.05) fluctuations. Holstein heifers experienced hyperthermia and panted in the sun, unlike the Brown and Fulani cattle. Breathing rate showed a highly significant (P〈0.01) seasonal variation. The heifers were generally most comfortable during the wettest periods of the year. The Holstein and Fulani showed the highest and lowest responses respectively. The Fulani did not seek shade; the Holstein sought shade more frequently than the Brown heifers. The Brown are more adaptable than the Holstein to the hot humid environment in which the Fulani cattle are relatively comfortable.
    Type of Medium: Electronic Resource
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  • 15
    Electronic Resource
    Electronic Resource
    Springer
    International journal of biometeorology 15 (1971), S. 71-79 
    ISSN: 1432-1254
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Description / Table of Contents: Zusammenfassung Saisonale Schwankungen in der Konzeptionsrate von Fleischrindern der Guineasavanne Südnigerias wurden anhand von 8.971 Kalbungen aus zehn Jahren (1959–1968) untersucht. Die durchschnittlichen jährlichen und monatlichen Konzeptionsraten betrugen 72 beziehungsweise 6%; jedoch wurden hochsignifikante Abweichungen (p 〈 0.001) von dem monatlichen Mittelwert festgestellt: die höchste Konzeptionsrate wurde mit 7,3% für April, die niedrigste mit 4,4% für Oktober errechnet. Die mathematische Funktion der Konzeptionsrate folgt einer Sinuskurve, welche der monatlichen Veränderung der Tageslichtlänge parallel läuft (r = +0,39, p 〈 0.01). Die Konzeptionsrate war nicht mit der Durchschnittstemperatur oder den Niederschlägen korreliert. Diese Ergebnisse lassen vermuten, dass die saisonalen Schwankungen in der Konzeptionsrate zumindest teilweise auf photoperiodische Veränderungen zurückzuführen sind.
    Abstract: Resume Les variations saisonnières du taux de fécondité de bovins de la savanne du sud de la Guinée (Nigéria) ont été étudiées sur la base de 8971 mises bas ayant eu lieu durant une période de 10 ans. Le taux de fécondité moyen fut de 72% pour l'année et de 6% pour chaque mois. On constate pourtant des différences significatives entre les différents mois: le taux le plus élevé se trouve en avril (7,3%) et le plus bas en octobre (4,4%). La fonction du troisième degré du taux de fécondité est hautement significative (p 〈 0,001). Elle suit une courbe sinusöidale parallèle à celle de la longueur du jour (r = +0,39, p 〈 0,01). Il n'y a pas de relation entre le nombre de conceptions et la température ou les précipitations. Par conséquent, seul le photopériodisme semble influencer le nombre des conceptions.
    Notes: Abstract Seasonal variations in the frequency of conceptions were analysed from the records of 8,971 beef calves born over a period of ten years (1959–1968) in the Southern Guinea Savannah of Nigeria. Mean annual and monthly conception rates were 72 and 6%, respectively. Highly significant changes in conception rates were observed: the highest number of conceptions occurred in April (7.3%) and the lowest in October (4.4%). The cubic function of the curve depicting the monthly conception rate was highly significant (p 〈 0.001) and parallelled the change in photoperiod (r = +0.39, p 〈 0.01). Conception rate was not related to either temperature or precipitation. The evidence suggests a photoperiodic influence on conception rates.
    Type of Medium: Electronic Resource
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  • 16
    Electronic Resource
    Electronic Resource
    Springer
    International journal of biometeorology 17 (1973), S. 141-145 
    ISSN: 1432-1254
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Type of Medium: Electronic Resource
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  • 17
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 289 (1981), S. 411-413 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The experiments were performed on myotomal muscles of Xenopus laevis embryos and tadpoles. Procedures of dissection and staging have been described previously7. The muscle cells extend the length of a myotome and insert at myocommata where the neuromuscular junctions are located. Focal synaptic ...
    Type of Medium: Electronic Resource
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  • 18
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 204-206 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The mean single-channel conductance, and mean lifetime of the open state, have been estimated at the voltage-clamped end-plate of the frog (summer Rana pipiens) cutaneus pectoris muscle. Methods similar to those of Anderson and Stevens5, were used with the addition of Normarski interference ...
    Type of Medium: Electronic Resource
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  • 19
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Five neuronal and a large collection of putative glial cell lines from the rat central nervous system have been established in clonal cell culture and partially characterised. These cells shed new light on the distribution of neurotransmitter synthesis and brain-specific antigens among nerve and ...
    Type of Medium: Electronic Resource
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  • 20
    Electronic Resource
    Electronic Resource
    Springer
    Pflügers Archiv 416 (1990), S. 385-392 
    ISSN: 1432-2013
    Keywords: Acetylcholine receptor ; Membrane patch excision ; Channel kinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Excision of membrane patches from clonal BC3H1 cells to the inside-out configuration reduces the mean open time and burst duration of skeletal muscle nicotinic acetylcholine receptors. The channel conductance is not altered. Our results indicate that the rates for several steps in receptor activation are affected. The altered receptors apparently form a homogeneous population. Patterns of activity similar to that seen after excision are seen infrequently in recordings from cell-attached patches, suggesting that receptors with this type of altered function are present in intact membranes. The extent and rate of the reduction in mean open time after excision are similar at acetylcholine concentration over a 1000-fold range, indicating that the alteration does not depend on the state of ligation of the receptor. The extent and rate also are similar at room temperature and at 11° C. The changes seen indicate that careful comparisons to intact preparations are necessary when studying the gating of channels in excised patches or following reconstitution into artificial membranes.
    Type of Medium: Electronic Resource
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