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  • 1
    Electronic Resource
    Electronic Resource
    Role of endogenous and exogenous cholesterol in liver as the precursor for bile acids in rats
    Amsterdam : Elsevier
    Steroids 38 (1981), S. 495-509 
    Details
    ISSN: 0039-128X
    Keywords: 3α,12α-dihydroxy-5β-cholan-24-oic acid ; 3α,6β,7α-trihydroxy-5β-cholan-24-oic acid ; 3α,6β,7β-trihydroxy-5β-cholan-24-oic acid ; 3α,7α,12α-trihydroxy-5β-cholan-24-oic acid ; 3α,7α-dihydroxy-5β-cholan-24-oic acid ; 5-cholesten-3β-ol ; 5-cholestene-3β,7α-diol ; 7α-hydroxy-cholesterol ; chenodeoxycholic acid ; cholesterol ; cholic acid ; deoxycholic acid ; sB-muricholic acid ; α-muricholic acid
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0039-128X(81)90050-7
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  • 2
    Electronic Resource
    Electronic Resource
    Electrical and optical properties of CuIn5S8 single crystals (1983)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 2 (1983), S. 1875-1879 
    Details
    ISSN: 0392-6737
    Keywords: Conductivity phenomena in semiconductors and insulators
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Molte proprietà ottiche e di trasporto sono state studiate sui cristalli singoli di tipon di CuIn5S8. Si è determinato che il gap di energia a 0 K dalle misurazioni elettriche è 1.4 eV. Si è trovata un'anisotropia dell'effetto di magnetoresistenza e si è suggerito che i minimi della banda di conduzione siano situati in punti lungo le direzioni [100] nello spaziok. Si è trovata una banda di assorbimento ottico in una regione dell'infrarosso di (1÷1.6) μm, che è state attribuita alle transizioni delle piú basse bande di conduzione situate lungo le direzioni [100] a una piú alta banda di conduzione.
    Abstract: Резюме Исследуются некоторые транспортные и оптические свойства монокристаллов CuIn5S8 n-типа. Из электрических измерений определяется энергетическая щель при 0 К, которая составляет 1.4 эВ. Обнаружена анизотропия магниторезистивного эффекта. Предполагается, что минимумы зоны проводимости расположены в точках вдоль направления [100] вk-пространстве. Обнаружена оптическая зона поглощения в инфракрасной области (1÷1.6) мкм, которая связана с переходами из нижней зоны проводимости, расположенной вдоль направлений [100], В верхнюю зону проводимости.
    Notes: Summary Several transport and optical properties have been studied onn-type CuIn5S8 single crystals. The energy gap at 0 K was determined from the electrical measurements to be 1.4 eV. An anisotropy of the magnetoresistance effect was found and it was suggested that the minima of the conduction band were located at points along the [100] directions ink-space. An optical-absorption band was found in an infrared region of (1÷1.6) μm and was attributed to the transitions from the lowest conduction band situated along the [100] directions to an upper conduction band.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02457879
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  • 3
    Electronic Resource
    Electronic Resource
    Anti-phospholipid antibodies and cerebral vasospasm following subarachnoid haemorrhage (1995)
    Springer
    Acta neurochirurgica 135 (1995), S. 191-197 
    Details
    ISSN: 0942-0940
    Keywords: Cerebral vasospasm ; subarachnoid haemorrhage ; lupus anticoagulant ; anti-cardiolipin antibodies ; platelet
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Delayed ischaemic deficits due to cerebral vasospasm contribute to the high morbidity and mortality rates associated with subarachnoid haemorrhage. We evaluated the usefulness of measuring anti-phospholipid antibodies (aPLs) for prediction of the occurrence of symptomatic vasospasm and the outcome after subarachnoid haemorrhage. 32 consecutive patients with subarachnoid haemorrhage due to ruptured cerebral aneurysms were studied. They were admitted and operated on within 72 hours after the onset of subarachnoid haemorrhage. aPLs such as lupus anticoagulants, anti-cardiolipin IgG and anti-cardiolipin IgM were measured repeatedly after admission. Furthermore, platelet count, platelet aggregability and plasma platelet factor 4 were also measured. Eleven among the 32 patients (34.4%) showed positive in the examination for aPLs. Although aPLs could not predict symptomatic vasospasm, once symptomatic vasospasm occurred, patients with aPLs frequently demonstrated cerebral infarction and there-fore their outcome was worse. aPLs were associated with a severe initial clinical grade and SAH grade on CT scan. Therefore it may explain the association of aPLs with worse outcome. aPLs were detected between 1 and 7 days. Four of 6 patients (67%) with aPLs became negative between 7 and 13 days after subarachnoid haemorrhage. The mechanism of transient aPLs is unclear but it is more likely to occur in the severer grade patients. The reduction in platelet count, the increased platelet aggregability, and the increased plasma platelet factor 4 concentration were also observed in aPLs-positive patients with symptomatic vasospasm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02187767
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  • 4
    Electronic Resource
    Electronic Resource
    Platelet-activating factor and antiphospholipid antibodies in subarachnoid haemorrhage (1994)
    Springer
    Acta neurochirurgica 128 (1994), S. 144-149 
    Details
    ISSN: 0942-0940
    Keywords: Anti-phospholipid antibodies ; platelet-activating factor ; PAF-acetylhydrolase ; subarachnoid haemorrhage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The purpose of this study was to measure plasma platelet-activating factor (PAF) concentration, PAF-acetylhydrolase activities, anti-phospholipid antibody (aPLs) titers, and platelet function in patients with subarachnoid haemorrhage (SAH) and to assess the association of these variables with the development of cerebral vasospasm. Thirty-two patients with SAH due to ruptured cerebral aneurysm were studied. Plasma PAF concentration, PAF-acetylhydrolase activity, platelet count and aggregability, and plasma factor 4 (PF 4) concentrations were measured regularly until approximately 2 weeks after SAH. aPLs, including lupus anticoagulant and anti-cardiolipin IgG and IgM were measured within 3 days after SAH. Plasma PAF concentration in patients with SAH showed the highest value on the occasion during 5 to 9 days after SAH. The concentrations were higher in patients with infarction due to vasospasm than in patients without cerebral infarction on any occasions after SAH. Plasma PAF-acetylhydrolase activities did not change in patients, regardless of the presence of cerebral infarction after SAH. Increased platelet consumption and aggregability and higher concentrations of PF 4 were detected in patients with cerebral infarction and not in patients without cerebral infarction. The patients with cerebral infarction due to cerebral vasospasm had aPLs more frequently than the control volunteers. Our findings indicate that increased plasma PAF and aPLs may contribute to the pathogenesis of cerebral vasospasm after SAH.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01400665
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  • 5
    Electronic Resource
    Electronic Resource
    The use of computed tomography in the prediction of delayed cerebral infarction following acute aneurysm surgery for subarachnoid haemorrhage (1995)
    Springer
    Acta neurochirurgica 132 (1995), S. 9-13 
    Details
    ISSN: 0942-0940
    Keywords: Acute aneurysmal surgery ; cerebral infarction ; cerebral vasospasm ; computed tomography ; subarachnoid haemorrhage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In order to predict the occurrence of cerebral infarction after aneurysmal surgery in patients with subarachnoid haemorrhage, we measured the amount of subarachnoid blood on initial and on post-operative computed tomograms. We used a reliable grading method to estimate the amount of blood on computed tomograms in 24 patients with infarction due to vasospasm and 45 patients without cerebral infarction, all of whom underwent aneurysmal surgery within 48 hours after the ictus. The total amount of subarachnoid blood on admission and on the day after operation was more in the cerebral infarction group than in the non-infarction group. The clearance rate of subarachnoid blood by surgery was lower in patients with cerebral infarction than in patients without infarction and the predominant site of subarachnoid blood corresponded with the site of the infarct. Of 24 patients with cerebral infarction, 22 (92%) belonged to the group whose initial total blood score was more than 10 on admission and whose clearance rate by surgery was less than 50%. Therefore, we propose this range to be an indication for the occurrence of cerebral infarction in postoperative patients due to cerebral vasospasm. The presence of intracerebral haematoma and the amount of ventricular blood and their clearance by surgery were also estimated for the prediction of delayed cerebral infarction after aneurysmal surgery. However, they had no relation to the occurrence of cerebral infarction due to vasospasm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01404841
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  • 6
    Electronic Resource
    Electronic Resource
    Magnetoresistance of CdIn2S4 single crystals (1983)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 2 (1983), S. 1886-1890 
    Details
    ISSN: 0392-6737
    Keywords: Conductivity phenomena in semiconductors and insulators
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto La resistenza magnetica è stata misurata in cristalli singoli di CdIn2S4 con concentrazioni di portatori diverse che variano da 4.3·1015 cm−3 a 8.5·1018 cm−3. I risultati indicano che il minimo della banda di conduzione del CdIn2S4 è situato ak=0.
    Abstract: Резюме Измеряется магниторезистивный эффект в монокристаллах CdIn2S4, имеющих различные концентрации носителей от 4.3·1015 см−3 до 8.5·1018 см−3. Полученные результаты указывают, что минимум зоны проводимости в CdIn2S4 приk=0.
    Notes: Summary Magnetoresistance was measured on CdIn2S4 single crystals having various carrier concentrations ranging from 4.3·1015 cm−3 to 8.5·1018 cm−3. The results indicate that the minimum of the conduction band of CdIn2S4 is located atk=0.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02457881
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