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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Carbohydrate Research 70 (1979), S. 199-207 
    ISSN: 0008-6215
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Thermochimica Acta 93 (1985), S. 167-170 
    ISSN: 0040-6031
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1365-2958
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: The HOG/p38 MAP kinase route is an important stress-activated signal transduction pathway that is well conserved among eukaryotes. Here, we describe a novel mechanism of activation of the HOG pathway in budding yeast. This mechanism operates upon severe osmostress conditions (1.4 M NaCl) and is independent of the Sln1p and Sho1p osmosensors. The alternative input feeds into the HOG pathway MAPKK Pbs2p and requires activation of Pbs2p by phosphorylation. We show that, upon severe osmotic shock, Hog1p nuclear accumulation and phosphorylation is delayed compared with mild stress. Moreover, both events lost their transient pattern, presumably because of the absence of negative feedback mediated by Ptp2p tyrosine phosphatase, which we found to be localized in the nucleus. Under severe osmotic stress conditions, the delayed nuclear accumulation correlates with a delay in stress-responsive gene expression. Severe osmoshock leads to a situation in which active and nuclear-localized Hog1p is transiently unable to induce transcription of osmotic stress-responsive genes. It also appeared from our studies that the Sho1p osmosensor is less active under severe osmotic stress conditions, whereas the Sln1p/Ypd1p/Ssk1p sensor and signal transducer functions normally under these circumstances.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of thermal analysis and calorimetry 23 (1982), S. 51-64 
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung TG, DTG und simultane DTA wurden zur Verfolgung der thermischen Zersetzungsprozesse von Zellulose in Stickstoff oder in einer oxidativen Atmosphäre eingesetzt. Während der Zersetzung entstandene flüchtige Produkte und feste Rückstände wurden analysiert um weitere Informationen zur Klärung der Kurven zu erhalten. Ein Hinweis auf mögliche flammende oder glühende Verbrennungen wird diskutiert. Die maximale Geschwindigkeit des Gewichtsverlusts, die prozentuale Menge des Rückstandes bei der End-temperatur und die exothermen Peakflächen (DTA) könnten als geeignete Kriterien für die Entflammbarkeit der Zellulosen und die Aktivität der feuerhemmenden Substanzen betrachtet werden. Die aus den thermogravimetrischen Messungen errechneten formalen kinetischen Parameter entsprechen den LOI (limiting oxygen index) Werten. Neue Beobachtungen wurden unter Einsatz einer Kombination der Thermoanalyse und der LOI-Techniken gemacht. LOI-Glut oder LOI-Entflammen werden mathematisch aus dem Zusammenhang zwischen der Geschwindigkeit des Gewichtsverlusts und der Sauerstoffkonzentration bestimmt.
    Abstract: Резюме ТГ, ДТГ и совмещенный м етод ДТА были использованы для кон троля процессов термического разлож ения целлюлозы в атмо сфере азота и в окислительной атм осфере. Летучие продукты и ос татки, образующиеся в о время разложения, были проа нализированы для получения дополн ительной информации для объяснения термичес ких кривых. Обсуждено ука зание о возможном вос пламенении тлении целлюлозы. Ско рость макимальной потери в еса, процентное колич ество твердого остатка, обр азующегося при конечной температур е разложения, и поверх ности экзотермических пик ов (ДТА), могут-считаться тодходящи ми критериями воспла менимости целлюлоз и активност и замедлителей пламени. Формальные к инетические парамет ры процесса вычислены из термогр авиметрических измерений, соответст венно значениям ЛОИ. О тмечены новые наблюдения при испольвании совм ещенного термическо го анализа и метода ЛОИ. ЛОИ — тлени е и ЛОИ — воспламенение о пределяются математ ически из горафика в координат ах скорость потери веса и концент рация кислорода.
    Notes: Abstract TG, DTG and simultaneous DTA were used to monitor the thermal decomposition processes of cellulose in nitrogen or in an oxidative atmosphere. Volatile products and solid residues formed during decomposition were analyzed to obtain additional information for elucidation of the thermal curves. An indication of possible flaming or smoldering combustion is discussed. The maximum weight-loss rate, the percentage amount of the residue at the final temperature, and the exothermic peak areas (DTA) could be considered as suitable criteria for the flammability of cellulosics and the activity of flame retardants. The formal kinetic parameters evaluated from the thermogravimetric measurements correspond to the limiting oxigen index (LOI) values. New observations were made using a combination of thermal analysis and LOI techniques. LOI — smoldering or LOI — flaming are mathematically determined from the plot of weight-loss rate versus oxygen concentration.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Biotechnology letters 14 (1992), S. 55-60 
    ISSN: 1573-6776
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary With the use of a protoplast fusion technique the killer character of K1 type was transferred into four industrial Saccharomyces wine yeasts. The prototrophic yeast strains active against standard sensitive and K2 killer Saccharomyces strains, resistant to K1 killer toxin were constructed with no changes in technological properties.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 1 (1976), S. 19-23 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The course of pyrolysis, thermooxidation, flame combustion and glowing combustion has been observed with differently treated cellulose samples by means of thermoanalytical methods. The impregnation of cellulose materials by inorganic salts produces a less combustible material, less stable at relatively low temperatures, yet giving more of the solid residue resistant to pyrolysis and combustion processes. The more thermally stable cellulose derivatives, but with insufficient resistance to flame and particularly glowing combustion, have been obtained by cyanoethylation and grafting of acrylonitrile on to cellulose.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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