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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 102 (1980), S. 2791-2797 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 45 (1980), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: COW'S milk systems fortified to 15.0% and 18.0% total solids with nonfat dry milk (NDM), peanut flour (PF) or soy protein isolate (SPI) were heated at 70, 80, 85, and 90°C for 30 min. Protein content ranged from 6.4% for NDM milk to 10.0% for SPI milks at 18.0% total solids. All milks exhibited pseudoplastic flow behavior at 4°C. Consistency index (K), or apparent viscosity (Q) at shear rate of unity, of PF and SPI milks was generally higher than that of similarly processed NDM milk. Increased total solids and increased heat treatment more dramatically increased the K value for oilseed milks than for NDM milk. Storage (10 days at 4°C) increased K value of SPI milk heated at 80°C or above. Stirred viscosity of yogurt prepared from PF milk heated at 85°C was lower than that of similarly processed NDM and SPI yogurt. Increased total solids increased all yogurt texture data for NDM yogurt, penetration work data for PF yogurt and stirred viscosity data for SPI yogurt. Texture data were maximal with heating at 80–85°C for NDM yogurt and with heating at 90°C for SPI and PF yogurt. Yogurt texture data increased with storage in NDM systems heated at 85°C or above and in SPI systems heated at 90°C.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Experimental brain research 38 (1980), S. 405-417 
    ISSN: 1432-1106
    Keywords: Calcium ; Mitochondria ; Cholinergic nerve ending ; Torpedo ; Transmitter release
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The calcium content of mitochondria isolated from the Torpedo electric organ was determined by atomic absorption spectroscopy. The mitochondrial fraction was found to contain 830 ng-atom Ca/mg protein. For comparison a fraction of isolated nerve endings contained 250 ng-atom Ca/mg protein. When tissue was continuously stimulated at a frequency of 5 Hz via the electromotor nerves, the Ca content of the mitochondrial fraction which is likely to contain both pre- and postsynaptic mitochondria was reduced proportionally to the decrease in transmitter content of the isolated nerve terminal fraction. After 5,000 pulses, the mitochondrial fraction had lost 80% of its Ca contents. When tissue was stimulated after previous perfusion with d-tubocurarine and blockade of electrical response the same number of pulses caused only a loss of 20–40% in the Ca content of the mitochondrial fraction. Release of transmitter was not affected by d-tubocurarine. The results suggest that repetitive stimulation in the absence of postsynaptic receptor blockade causes loss of Ca from both nerve terminal mitochondria and mitochondria of the myotube-derived electrocytes. In the presence of d-tubocurarine Ca is lost from presynaptic mitochondria only.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Experimental brain research 38 (1980), S. 419-424 
    ISSN: 1432-1106
    Keywords: Mitochondria ; Calcium staining ; Cholinergic nerve ending ; Torpedo ; Transmitter release
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The fine structure of the Torpedo electric organ was investigated during different functional states using fixation media with elevated calcium concentrations. When electric tissue was stimulated (5,000 pulses, 5 Hz) and subsequently fixed in an s-collidine buffered aldehyde fixative containing 5 mM CaCl2 mitochondria in both nerve terminals and postsynaptic electroplaque cells showed electron-dense deposits. When tissue blocks were stimulated in the presence of d-tubocurarine (250 μM) which blocked electrical response deposits were restricted to presynaptic mitochondria. Electron-dense deposits were never observed in unstimulated tissue. The observations suggest that after stimulation mitochondria have an increased calcium binding capacity. In conjunction with previous biochemical findings (Schmidt and Zimmermann, 1980), we suggest that this increased binding capacity is due to a previous stimulation induced loss of calcium from activated mitochondria.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Experimental brain research 39 (1980), S. 235-237 
    ISSN: 1432-1106
    Keywords: Treefrog ; Catecholamine ; Isthmotrigeminal tegmentum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Neurons that take up 3H-noradrenaline were detected, by autoradiography, around the ventral tip of the isthmic nucleus in treefrogs. No uptake was detected in the adjacent pretrigeminal nucleus, suggesting that this is not homologous to the locus coeruleus.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 19 (1980), S. 153-157 
    ISSN: 1432-1920
    Keywords: Metrizamide ; Myelography ; Adverse reactions ; Organic psychosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Water-soluble contrast media, which have been employed in the examination of the lumbar spinal canal for 30 years, can sometimes result in severe complications, such as arachnoiditis, epileptic seizures, and myoclonic spasm. These complications have been seen less frequently since the advent of metrizamide, a new non-ionic water-soluble contrast medium. However, a further neurological complication has now arisen-mental disorder, varying in kind and degree; for example, organic psychosis and perceptual disturbance. Some characteristic cases are described. A series of 75 patients, all of whom received varying amounts of metrizamide for the purpose of cervical, thoracic and lumbar myelography, has been studied. Seven patients were found to have a pronounced organic psychosis and three patients had visual illusions or hallucinations. It is suggested that there is some degree of correlation between the total amount of iodine received and patient age. By careful enquiry and examination, similar disturbances were also found some 4–8 h after myelography with other water-soluble contrast media.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 19 (1980), S. 111-111 
    ISSN: 1432-1920
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-1440
    Keywords: Gold ; D-Pencillamine ; Rheumatoid arthritis ; Gold ; D-Penicillamin ; chronische Polyarthritis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung In einer prospektiven klinischen Studie wurden im paarweisen Vergleich Gold und D-Penicillamin (D-Pen.) bezüglich Wirksamkeit und Nebenwirkungsrate bei Behandlung der chronischen Polyarthritis (c.P.) untersucht. Mit Hilfe einer entsprechend angelegten Randomliste wurden 70 Patienten nach festgelegten Kriterien zu Paaren geordnet und alternierend mit D-Pen. oder Gold behandelt. Der klinische Befund (Krankheitsstadium nach Steinbrocker, Lansbury-Gelenkindex, Aktivitätsstadium nach Voit und Gamp) und die Laborparameter entzündlicher Aktivität wurden vierteljährlich, der Röntgenbefund jährlich dokumentiert. Die Beobachtungszeit betrug mindestens zwölf Monate. Bei Therapieunterbrechung (Nebenwirkungen, fehlende Compliance oder Wirkungslosigkeit) wurde der freiwerdende Platz in der Randomliste mit dem nächsten passenden Patienten wieder besetzt. Von insgesamt 147 erfaßten Patienten wurde die Behandlung bei 32 vorzeitig wegen Nebenwirkungen, bei 3 wegen ungenügender Wirksamkeit unterbrochen. 42 Patienten entzogen sich den erforderlichen Kontrollen. Der klinische Verlauf war 16mal unter Gold und 6mal unter D-Pen. besser, bei 13 Paaren war ein Unterschied im klinischen Verlauf nicht festzustellen (p=0,05). Bei isolierter Bertrachtung der Laborparameter scheint die Entwicklung unter D-Pen. besser (p〉0,05), eine röntgenologisch feststellbare Progredienz der knöchernen Destruktionen scheint unter Gold seltener (p〉0,05). Auch der paarunabhängige Vergleich des therapeutischen Effektes zeigt Gold überlegen. Anzahl und Ausmaß der erzielten Remissionen sind größer. Das Vorhandensein von Rheumafaktoren beeinflußt das therapeutische Ergebnis nicht. Unter beiden Pharmaka ist in vergleichbarer Frequenz mit Nebenwirkungen zu rechnen (15/44 bei D-Pen., 17/52 bei Gold). Hämatologische und nephrologische Komplikationen sind aber unter D-Pen. häufiger, wogegen die weitaus häufigste Komplikation unter Gold ein Exanthem bzw. Enanthem ist. Das Ergebnis der Studie spricht insgesamt für eine Überlegenheit von Gold gegenüber D-Pen. bei der Basisbehandlung der c.P.
    Notes: Summary A prospective clinical trial in couples was done to compare effectiveness and toxicity of gold and D-penicillamine (D-Pen.) in treatment of rheumatoid arthritis (r.A.). Respecting defined criteria 70 patients were put to couples according to a random list and were treated with gold or D-Pen. alternatively. Physical and laboratory indices of inflammatory activity were checked every 3 months, X-rays every 12 months. Dropouts (side effects, missing compliance, uneffectiveness) were replaced by the nextcoming fitting patient. Thirty-two of 147 totally recruited patients stopped treatment because of side effects, three because of unsatisfying efficiency. Forty-two patients shuned the necessary controls. The clinical course was better in 16 couples with gold, only in sex couples with D-Pen. Thirteen pairs showed no difference in this respect (p=0.05). Looking to the laboratory parameters separately D-Pen. tends to be superior (p〉0.05), radiografic deterioration seems to be more seldom with gold (p〉0.05). Side effects occur with both drugs in comparable frequency (15/44 with D-Pen., 17/52 with gold), but the complications with D-Pen. are more serious. Altogether this trial shows gold superior to D-Pen. in the long-term treatment of r.A.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-1335
    Keywords: Diterpene ; Tumorpromoter ; Plasminogen-Aktivator ; Blutplättchen-Aggregation ; Diterpene ; Tumor promoter ; Plasminogen activator ; Platelet aggregation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Phorbol and eight of its derivatives were investigated for their ability to stimulate the synthesis of the enzyme plasminogen activator in cultured chick embryo fibroblasts and to aggregate human blood platelets and have been assayed for tumor, promoting and skin, irritant activities. Over a range of concentrations, elevation in the levels of plasminogen activator activity induced by phorbol derivatives correlates well with their promoting and irritant properties. In the platelet aggregation assay however, the parallelism between the activities measured in different biological assays was less complete. While strong promoters, such as TPA, are potent aggregating agents, and weak promoters, such as PDA, are poor or ineffective inducers of aggregation, two derivatives, PDD and PDB, deviate from this general result. Platelets must be exposed to PDD in relatively high concentrations before they will aggregate, and PDB was found to be the most potent aggregating agent of all the derivatives tested.
    Notes: Zusammenfassung Phorbol und acht seiner Derivate wurden auf ihre Fähigkeit untersucht, die Synthese von Plasminogen-Aktivator in Zellkulturen von Hühnerembryo-Fibroblasten zu stimulieren und die Aggregation von Blutplättchen zu induzieren und auf ihre tumorpromovierende und hautirritierende Wirkung getestet. Die Erhöhung der Plasminogen-Aktivator Aktivität durch Phorbolderivate korreliert gut mit ihren irritierenden und promovierenden Eigenschaften. Im Test auf Blutplättchen-Aggregation ist die Korrelation nicht eindeutig: Sie gilt für starke Promotoren (wie TPA), die auch hochwirksame Induktoren der Aggregation sind, sowie für schwache Promotoren (wie PDA), die nur gering oder nicht induzieren; Ausnahmen sind PDD und PDB: PDD, ein starker Promoter, ist nur schwach wirksam, PDB, ein schwacher Promotor, ist dagegen das am stärksten aggregationsstimulierende Derivat.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 296 (1980), S. 215-221 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We investigate the effect of nuclear shell structure on the mass transport in low-energy heavy-ion collisions. The shell-correction energy leads to anharmonic driving potentials and thus, to nonlinear drift coefficients in the Fokker-Planck equation. Results for238U (7.42 MeV/nucleon)+238U are presented. The drift towards the closed Pb-shell enhances the fluctuations in the mass transport and provides an explanation for the large variances found experimentally. Local maxima in the mass distribution at the shell minima disappear due to the temperature dependence of the driving potential.
    Type of Medium: Electronic Resource
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