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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Acta neurochirurgica 53 (1980), S. 141-149 
    ISSN: 0942-0940
    Keywords: Laser surgery ; brain tumours ; operative technique
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A surgical carbon dioxide laser unit (laser) has been used since 1977 in twentyfive cases of various brain tumours, including ten meningiomas (four sphenoid ridge, two parasagittal, two falx, one olfactory, one posterior fossa), eleven gliomas (seven glioblastoma, four astrocytoma), two metastatic brain tumours, one haemangioblastoma, and one arteriovenous malformation (AVM). The criteria for laser use, as based on evaluation and location of meningioma, were: grade 1, convenient but adjuvant; grade 2, also necessary; grade 3, indispensable. The laser is obligatory in sphenoid ridge meningioma in order to peel the tumour away from the internal carotid artery, middle cerebral artery, cavernous sinus etc. The grade of necessity for laser use is therefore either 2 or 3. In convexity or parasagittal meningioma, on the other hand, the necessity grade is either 1 or 2. In the glioma group hemorrhage in seven cases of glioblastoma was easily laser-controlled, and the tumours were wasted away in a short time through vaporization, with minimum mechanical effect on adjacent tissue. The laser is therefore very useful in cases of glioma, especially glioblastoma, considering the shortened operating time, decreased blood loss, and extended area of tumour resection. Laser surgery is proposed as being most appropriate, mainly for its vaporizing and coagulating functions, in cases of brain tumour involving the elderly and poor risk cases.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of cutaneous pathology 10 (1983), S. 0 
    ISSN: 1600-0560
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1573-7446
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Three experiments were performed to evaluate the immunogenic potency of a soluble fraction ofPasteurella haemolytica against pneumonic pasteurellosis in calves. A soluble antigen was extracted by a 2.5% saline solution fromP.haemolytica. Weaned Holstein bull calves, seronegative for infectious bovine rhinotracheitis virus (IBRV) and the pasteurella antigen, were vaccinated either by repeated subcutaneous (SC) vaccination, or by exposure 3 times to the aerosol ofP.haemolytica antigen. Challenge exposure to aerosol ofP.haemolytica was preceded by infection with IBRV, or in experiments 2 and 3, the virus exposures were combined with a stress treatment. The lung lesions were examined at necropsy 3 to 8 days post infection. In the first experiment, all the vaccinated calves produced specific antibody response to the pasteurella antigen, and none of the calves including controls showed significant lesions in the lung. In the second experiment 2 aerogenically vaccinated calves had no lesions. One of the two SC-vaccinated calves had mild consolidated lesions. Two control calves, one of which died 3 days following the challenge, developed severe fibrinous pneumonia with consolidation of 50% or more of the lung surfaces.P.haemolytica was isolated only from the 2 control animals. In the third experiment, 2 of the 3 control calves developed moderate to severe consolidation, butP.haemolytica was isolated only from one of them. Two of the three aerosol-vaccinated calves also developed significant lesions and one of them yielded the bacteria from the lung. Three SC-vaccinated calves had slight lesions and the organism was not isolated from their lungs. The results did not consistently indicate an immunogenic potential of the soluble antigen againstP.haemolytica-related pneumonia. The effect of stress on the pathogenesis of bovine viral penumonia and correlation between pneumonic lesions and antibacterial resistancein situ are discussed.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Archives of virology 67 (1981), S. 135-140 
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Mouse erythrocytes were used, instead of rat erythrocytes, for typing adenoviruses by hemagglutination. Mouse erythrocytes were agglutinated by the prototype strains of adenovirus types 1, 2, 4, 5, 6, 8, 9 and 10 but not by types 3 and 7. Clear hemagglutination was observed without heterotypic antiserum by the microplate technique. No significant difference was observed in the hemagglutination titer using two strains of mice. Adenoviruses were identified by the hemagglutination inhibition test, using mouse erythrocytes and prototype strains 1, 2, 4, 5, 6 and 8. The use of mouse erythrocytes for typing of adenoviruses is recommended.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 36 (1980), S. 978-979 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Erythrocytes of vitamin E-deficient kids and chicks were hemolyzed at concentrations of Tween 20 above 1%. In vivo or in vitro uptake of vitamin E by the erythrocytes, or the addition of dithiothreitol or 2-mercaptoethanol, prevented the hemolysis with Tween 20.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-1238
    Keywords: Transesophageal echocardiography ; Left ventricular performance ; Tetanus ; Sympathetic nervous storm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Transesophageal M-mode echocardiography was applied for the evaluation of left ventricular performance in a case of severe tetanus with labile hypertension due to sympathetic nervous ‘torm’. When systemic blood pressure was elevated, increases in pulmonary arterial pressure, cardiac output, left ventricular enddiastolic diameter, fractional shortening and mean velocity of circumferential fiber shortening were noted. No changes were found in total peripheral vascular resistance or left ventricular endsystolic diameter. Positive pressure ventilation, rendered standard transthoracic echocardiography ineffective.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Journal of thermal analysis and calorimetry 18 (1980), S. 501-508 
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Résumé On a étudié, par chromatographie en phase gazeuse, la cinétique de la décomposition thermique du composé d'addition du carbonate de potassium avec de l'eau oxygénée, en se servant d'un réacteur à écoulement, type lit fixe. Les résultats expérimentaux peuvent être décrits avec un bon ajustement dans tout l'intervalle de décomposition, par l'équation (I) -ln (1−α)=kt;α=degré de décomposition,t=temps (min) etk=constante de vitesse (min−1). L'énergie d'activation et le facteur préexponentiel sont pour 0〈α〈0.8, respectivement égaux à 74.3 et 7.8 · 109 kJ/mole, et pour la période d'amortissement (0.8 〈α〈1.0) à 77.3 et 1.38 · 1010 kJ/mole.
    Abstract: Zusammenfassung Die Kinetik der thermischen Zersetzung der Additionsverbindung von Kaliumcarbonat mit Wasserstoffperoxid wurde unter Anwendung eines Fixbett-Durchfluß-reaktors durch Gaschromatographie untersucht. Die Versuchsergebnisse können im ganzen Bereich der Zersetzung am besten durch die Gleichung (I) -ln (1−α)=kt beschrieben werden;α=Zersetzungsgrad,t=Zeit (min) undk=Geschwindigkeitskonstante (min−1). Die Aktivierungsenergie und der präexponentielle Faktor betragen, für 0〈α〈0.8, 74.3 kJ/Mol, bzw. 7.8 · 109 und für die Periode des Abklingens (0.8〈α〈1.0) 77.3 kJ/Mol, bzw. 1.38 · 1010.
    Notes: Abstract The kinetics of the thermal decomposition of the addition compound of potassium carbonate with hydrogen peroxide was carried out using a fixed bed flow reactor with gas-chromatography. The experimental results can be best represented over the whole range of the decomposition, by the equation-In (1−α)=kt, whereα=degree of decomposition,t=time (min.), andk=rate constant (min.−1). The activation energy and the pre-exponential factor for 0〈α〈0.8, are 74.3 kJ/mol and 7.8 · 109, and for the decay period (0.8〈α〈1.0), 77.3 kJ/mol and 1.38 · 1010, respectively.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of thermal analysis and calorimetry 23 (1982), S. 201-207 
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Reaktion von Ammoniumsulfat mit Aluminiumoxid wurde untersucht. Durch Röntgendiffraktion und chemische Analyse wurde bestätigt, daß drei Zwischenprodukte (NH4)3Al(SO4)3, NH4Al(SO4)2 und Al2(SO4)3 gebildet werden. Die thermische Zersetzung der drei Verbindungen wurde durchgeführt. Es wurde gezeigt, daß für alle drei dasselbe Geschwindigkeitsgesetz Gültigkeit hat. Die Aktivierungsenergien für (NH4)3Al(SO4)3, NH4Al(SO4)2 und Al2(SO4)3 sind 95.9, 177.9 und 291.0 kJ/Mol.
    Abstract: Резюме Изучена реакция межд у сульфатом аммония и окисью алюминия. С пом ощью рентгено-диффракцио нного анализа и химич еского анализа подтвержден о образование трех промежуточных п родуктов реакции: (NH4)3Al(SO4)3, NH4Al(SO4)2 и Al2(SO4)3. Проведено термическое разложе ние этих трех соедине ний, и установлено, что для с облюдается один и тот же закон ско рости. Значения энерг ии активации соединени й (NH4)3Al(SO4)3, NH4Al(SO4)2 и Al2(SO4)3, соответстве нно, равны 95.9; 177.9 и 291.0 кдж. моль−1.
    Notes: Abstract The reaction between ammonium sulphate with aluminium oxide was studied. It was confirmed by X-ray diffraction and chemical analysis that three intermediate reaction products, (NH4)3Al(SO4)3, NH4Al(SO4)2 and Al2(SO4)3, are formed. The thermal decompositions of these three compounds were carried out. It has been shown that the same rate law is valid for them. The activation energies for (NH4)3Al(SO4)3, NH4Al(SO4)2 and Al2(SO4)3 are 95.9, 177.9 and 291.0 kj/mol, respectively.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Journal of thermal analysis and calorimetry 29 (1984), S. 121-129 
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es wurden die Reaktionen zwischen Ammoniumsulfat und drei Metalloxiden (Cr2O3, MnO2 und Fe2O3) untersucht. Durch Röntgendiffraktion und chemische Analyse wurde bestätigt, dass im Verlaufe der Reaktion stabile Zwischenprodukte gebildet werden. Es handelt sich dabei um (NH4)3M(SO4)3 und NH4M(SO4)2 im Falle von Cr2O3 und Fe2O3 und um (NH4)2Mn2(SO4)3 im Falle von MnO2. Diese Zwischenprodukte und die Metallsulfate wurden thermisch zersetzt. Die Volumenkontraktionsgleichung war für die Zersetzung all dieser Zwischenprodukte gültig. Die Arrheniusparameter wurden bestimmt.
    Abstract: Резюме зучены реакции между сульфатом аммония и тремя окислани метал лов Cr2O3, MnO2 и Fe2O3. Химическим ан ализом и диффракцией рентгеновских лучей подтверждено, что в ходе реакций пос ледовательно образуются устойчив ые промежуточные продукты. В случае оки слов трехвалентных х рома и железа, такими продук тами были (NH4)3M(SO4)3 и NH4M(SO4)2, а в случае дв уокиси марганца (NH4)2Mn2(SO4)3. Проведено термическое разложе ние этих промежуточн ых продуктов и сульфато в этих металлов. Для реакций разложен ия всех промежуточны х продуктов справедливым было ур авнения объемного сжатия. Опр еделены аррениусовс кие параметры.
    Notes: Abstract The reactions between ammonium sulphate and three metal oxides (Cr2O3, MnO2 and Fe2O3) were studied. It was confirmed by X-ray diffraction and chemical analysis that stable reaction intermediates were formed consecutively in the course of the reactions. These were (NH4)3M(SO4)3 and NH4M(SO4)2 for Cr2O3 and Fe2O3 and (NH4)2Mn2(SO4)3 for MnO2. The thermal decompositions of these intermediates and of the metal sulphates were carried out. The contracting-volume equation was valid for the decomposition of all the intermediates. The Arrhenius parameters were determined.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1573-4935
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The 250-kDa sialoglycoprotein of bovine erythrocyte membranes, GP-2, has been found to be an exception-ally rich source of branched sialo-oligosaccharides of poly-N-acetyllactosamine (I antigen) type with receptor activity for the human pathogenMycoplasma pneumoniae.Desialylated GP-2 is the most potent I-active substance thus far tested. Since this gtyco-protein is hydrophobic and can be readily re-incorporated into cell membranes, it should be useful in future studies of the mechanism of production of auto-antibodies to the I antigen which commonly arise following human infection withM. pneumoniae.
    Type of Medium: Electronic Resource
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