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  • 1985-1989  (7)
  • 1980-1984  (4)
  • 1987  (7)
  • 1980  (4)
  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 58 (1987), S. 1901-1904 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A three-dimensional computer model was used to study the scattering of a reflected lithium ion beam by an electrostatic reflector. Results show that for ion gun systems for active space plasma experiment applications, beam scattering of less than 1° can be attained with electrostatic reflectors.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of periodontal research 22 (1987), S. 0 
    ISSN: 1600-0765
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Bacteroides gingivalis produces large amounts of proteolytic enzymes which may play a role in its virulence. These enzymes may participate in the tissue destruction of the inflammatory process. In this study, the characteristics of two such enzymes, N-CBz-glycyl-glycyl-arginyl peptidase (N-CBz-Gly-Gly-Arg peptidase) and glycyl-prolyl peptidase (Gly-Pro peptidase) were investigated. The enzymes eluted in different peaks from an anion exchange column. N-CBz-Gly-Gly-Arg peptidase was associated with cells up to 48 h in culture. If cultured longer, it also released in the supernatant. It exhibited optimal activity between pH of 7.0 and 7.5 and was readily inactivated by heat treatment (45°C for 15 min). The enzyme activity was inhibited by p-chloromercuribenzoic acid (PCMB), leupeptin and antipain, suggesting that it is a thiol protease. The B. gingivalis N-CBz-Gly-Gly-Arg peptidase was different from the serum enzyme that digests the same substrate. The serum enzyme was more resistant to heat treatment and was inhibited by diisopro-pylfluorophosphate (DFP). B. gingivalis also produced Gly-Pro peptidase that is released in the supernatant. The enzyme has an optimal pH range between 7.5 and 8.0. The B. gingivalis Gly-Pro peptidase was inhibited by DFP, suggesting that it represents a serine protease. The serum Gly-Pro peptidase did not differ from the bacterial enzyme with respect to its sensitivity to inhibitors; however, they were markedly different in heat sensitivity. The bacterial enzyme was completely inactivated at 60°C for 30 min, whereas the serum enzyme was not inactivated even at 1 h at 60°C.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 258 (1980), S. 990-990 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 43 (1987), S. 324-327 
    ISSN: 1420-9071
    Keywords: Cyclosporin A ; cellular immunity ; Streptozocin ; insulitis ; diabetes mellitus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Cyclosporin A (CYA), when administered to CD-1 mice treated with a subdiabetogenic dose of Streptozocin (STZ), exacerbated the STZ-induced insulitis and elevated the plasma glucose levels, parallel to a reduction of the insulin content of the pancreas. The possible mechanisms of CYA-mediated aggravation of STZ-induced diabetes are discussed.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Microchimica acta 73 (1980), S. 301-306 
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung 3-Hydroxychromon reagiert mit Zinn(IV) in schwach saurem bis neutralem Medium unter Bildung eines 1∶1-Komplexes. Dieser fluoresziert intensiv. Ein empfindliches Verfahren zur Bestimmung von Sn(IV) auf dieser Grundlage wurde ausgearbeitet. Die Eichkurve verläuft in dem Gebiet zwischen 0,4 und 8,0μg Sn/25 ml bei pH 4,5, einer Wellenlänge von 365 nm und bei Messung der Gesamtfluoreszenz geradlinig. Chloride, die die Fluoreszenzintensität bei Zinnbestimmungen im allgemeinen herabsetzen, können bis zu 300 mg toleriert werden.
    Notes: Summary 3-Hydroxychromone reacts with tin(IV) to produce 1∶1 complex in a weakly acidic-neutral medium. The complex exhibits intense fluorescence. A sensitive method is described for the fluorometric determination of tin(IV) with 3-hydroxychromone. The calibration graph is linear in the range of 0.4–8.0μg/25 ml of tin(IV) (pH 4.5–5.0, Excitation wavelength: 365 nm, Measured total fluorescence). Chloride which generally decreases the fluorescence intensity in the fluorometric determination of tin can be tolerated at 300-mg level.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 325 (1987), S. 617-620 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We identified the subplate and marginal zone cells unam-bigously by their birthdate. These cells undergo their final round of cell division and migrate away from the ventricular zone between embryonic day 24 (E24) and E30 (gestation is 65 days in the cat)1. In contrast, cells of the cortical layers ...
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1420-9071
    Keywords: EMC virus ; Corynebacterium parvum ; diabetes mellitus ; immunity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Corynebacterium parvum prevented the development of encephalomyocarditis virus-induced diabetes in mice, when it was given 3–14 days before the virus infection. This treatment inhibited virus replication in the pancreas of the infected mice at an early stage of the infection.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical microbiology & infectious diseases 6 (1987), S. 74-75 
    ISSN: 1435-4373
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In the described assay system a blue colour develops within 30 min after inoculation of obligate anaerobes, even under aerobic conditions. The simple and rapid assay may be of use in differentiating obligate anaerobes of clinical importance.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1435-1803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Für das experimentelle Studium chronischer Koronarstenosen wurde ein Ameroid-Konstriktor modifiziert, um die Beurteilung des Einengungsgrades aufgrund cineangiographischer Serienuntersuchungen zu erleichtern. Um eine Schwellung des Ameroid-Materials nach außen zu verhindern, wurde — anstelle eines Metallrahmens — ein strahlendruchlässiger Plastikring benutzt. 10, 20 und 30 Tage nach der Implantation des Ameroid-Konstriktors am R. circumflexus der linken Koronararterie wurde eine Koronarangiographie vorgenommen, wobei an den betreffenden Tagen eine fortschreitente Koronareinengung von 57, 78 bzw. 88% nachgewiesen wurde. Bei 5 von 6 Hunden ließen sich am 30. Tag Kollateral-Gefäße vom R. interventr. ant. zum R. circumflexus der linken Koronararterie demonstrieren.
    Notes: Summary For the experimental studies on chronic coronary stenosis, an ameroid constrictor was modified to facilitate serial cineangiographic evaluation of the degree of arterial narrowing. A radiolucent plastic ring instead of a stainless frame was used to prevent outward swelling of the ameroid material. Coronary cineangiography was performed 10, 20 and 30 days after the implantation of the modified ameroid constrictor on the left circumflex coronary artery (LCX), which could prove the progressive coronary stenosis of 57, 78 and 88% on the respective days. Collateral channels from the anterior descending branch of the left coronary artery to the LCX were demonstrated angiographically in 5 out of the 6 dogs on the 30th day.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Medical & biological engineering & computing 25 (1987), S. 45-50 
    ISSN: 1741-0444
    Keywords: Blood gas ; ISFET ; Lactate Ringer ; Patient monitoring ; pCO2 ; pH ; pO2
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract A system for the online, simultaneous and intermittent analysis of blood pH, pCO2 pO2 using two-way cyclic pumping of lactate Ringer as a baseline solution is described. The multi-gas sensor is composed of a pH-ISFET with a temperature sensor, a pH-ISFET-based pCO2 sensor and a Clark-type pO2 sensor, bundled in an epoxy rod, and held in place in a flow cell which is directly connectable to an indwelling cannula. The system is controlled by a microcomputer, which supervises pump operation, temperature-compensation of sensor outputs, one-point calibration using sampled blood analysis, and provides graphical display of monitored results. Results of arterial blood-gas monitoring for mongrel dogs are presented which demonstrate the reliability of the present system over extended periods.
    Type of Medium: Electronic Resource
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