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  • 1990-1994  (6)
  • 1975-1979  (3)
  • 1960-1964
  • 1991  (6)
  • 1977  (3)
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Materialart
Erscheinungszeitraum
  • 1990-1994  (6)
  • 1975-1979  (3)
  • 1960-1964
Jahr
Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    Deep impurity levels and diffusion coefficient of manganese in silicon (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 1440-1445 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Manganese-related deep levels in n- and p-type silicon have been investigated by deep level transient spectroscopy and Hall effect. Two electron traps of Ec−(0.12±0.01) eV and Ec−(0.41±0.01) eV, and a hole trap of Ev+(0.32±0.01) eV are found in manganese-doped silicon. The energy levels of these traps correspond to the transitions between four charge states (Mn−, Mn0, Mn+, Mn++ ) of interstitial manganese. An additional donor-type electron trap of Ec−(0.51±0.02) eV is observed in the n-type samples, and the trap can be tentatively assigned to substitutional manganese. Furthermore, an electron trap of Ec−(0.50±0.02) eV is observed for n+p junction samples diffused with manganese in boron-doped p-type silicon. The trap is attributed to the manganese-boron complex, which is formed owing to the pairing reaction of interstitial manganese and substitutional boron. From the investigation of the pairing reaction, the diffusion coefficient DMn of interstitial manganese is determined in the temperature range 14–90 °C. It can be represented by the expression DMn=2.4×10−3 exp(−0.72/kT)cm2 s−1.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.347285
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  • 2
    Digitale Medien
    Digitale Medien
    Second harmonic generation coherent interferometry disclosing the orientation of the submerged hemicyanine layer in a Langmuir-Blodgett multilayer structure (1991)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 95 (1991), S. 9636-9638 
    Details
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie , Physik
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/j100177a009
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  • 3
    Digitale Medien
    Digitale Medien
    ANTIARRHYTHMIC PROPERTIES OF 5-(3-TERT-BUTYLAMINO-2-HYDROXY)PROPOXY-3,4-DIHYDRO-CARBOSTYRIL HYDROCHLORIDE (OPC- 1085), A NEWLY SYNTHESIZED, POTENT β-ADRENORECEPTOR ANTAGONIST (1977)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical and experimental pharmacology and physiology 4 (1977), S. 0 
    Details
    ISSN: 1440-1681
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: 1. The antiarrhythmic properties of 5–(3-tert-butylarnino-2-hydroxy)propoxy-3,4-dihydrocarbostyril hydrochloride (OPC-1085) were compared with those of propranolol and pindolol using various kinds of preparations for experimental arrhythmia in dogs.2. Although OPC-1085 was the most potent drug to antagonize adrenaline-induced arrhythmia in animals anaesthetized with either pentobarbitone sodium or halothane, it was scarcely effective on ouabain-induced arrhythmia in pentobarbitone sodium anaesthetized animals.3. When these compounds were administered intravenously to conscious dogs 24 h after two-stage ligation of the anterior descending artery, ectopic ventricular beats of coronary ligation-induced arrhythmia were reduced while regular sinus beats were simultaneously increased.4. OPC-1085 was very effective on aconitine-induced arrhythmia in dogs anaesthetized with pentobarbitone sodium. The effective dose was similar to that of propranolol but about fifteen times less than that of pindolol.5. It is concluded that different potencies among these β-adrenoreceptor antagonists against various kinds of experimental arrhythmias cannot be simply deduced from any one of the following properties; β-adrenoreceptor antagonism, intrinsic myocardial stimulation, local anaesthetic and so-called quinidine-like effects.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1440-1681.1977.tb02684.x
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  • 4
    Digitale Medien
    Digitale Medien
    Palpation as a method for evaluating occlusal discrepancies (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral rehabilitation 18 (1991), S. 0 
    Details
    ISSN: 1365-2842
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: In this study, 30 dentists were surveyed about their methods of palpating teeth for the evaluation of premature contacts. Thirty-eight dentists were then tested to determine their ability to discriminate degrees of prematurity using each of two different methods of palpation. The degree of digital pressure used by each dentist during palpation was also measured. The majority of dentists chose the same method for palpation: a single forefinger overlaying the facial surfaces of the central incisors being evaluated. In the discrimination test, the majority of dentists were able to identify reliably occlusal interference of ≥50 μm regardless of the palpation method used.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2842.1991.tb00079.x
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  • 5
    Digitale Medien
    Digitale Medien
    Human gnathostomiasis (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of cutaneous pathology 18 (1991), S. 0 
    Details
    ISSN: 1600-0560
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Two patients became infested with Gnathostoma nipponicum after eating raw loach-fish they had caught in a rice field in central Japan. A fragment of Gnathostoma was found in a biopsy from one of them. The sera of both patients reacted with Gnathostoma antigen using indirect immunofluorescence. Scanning electron microscopy was performed on blocks of the paraffin-embedded parasite sample and the viscera of a fish from the same rice field. The risk of eating raw freshwater fish is discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1600-0560.1991.tb00137.x
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  • 6
    Digitale Medien
    Digitale Medien
    The right way (1991)
    [s.l.] : Nature Publishing Group
    Nature 351 (1991), S. 193-193 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SIR - In our recent paper on information storage using films of an azobenzene deriva-tive1, we proposed a mechanism to explain the experimental results which differed from that published by us in an earlier, preliminary paper2. After detailed investigations, we have concluded that the earlier ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/351193c0
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  • 7
    Digitale Medien
    Digitale Medien
    Linkages between chromophore and apoprotein in the biliverdin-protein of the scales of big blue parrotfish, Scarus gibbus Rüppell (1977)
    Springer
    Cellular and molecular life sciences 33 (1977), S. 583-584 
    Details
    ISSN: 1420-9071
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Summary On the basis of the amino acid composition of the chromophore peptides, it can be assumed that Asp, Ser and 1/2 Cys are located near the biliverdin chromophore. Experiments for splitting of the chromophore lead us to expect a thioether bond in the linkages between biliverdin and apoprotein.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01946509
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  • 8
    Digitale Medien
    Digitale Medien
    Maturation defect of a temperature-sensitive mutant of western equine encephalitis virus (1977)
    Springer
    Archives of virology 53 (1977), S. 209-219 
    Details
    ISSN: 1432-8798
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary The defective step of a temperature-sensitive mutant of western equine encephalitis virus, which synthesize viral RNA but not mature virus at the restrictive temperature, was studied. Cells infected with the mutant virus at the restrictive temperature synthesized the same intracellular viral RNA as that in wild type infection. Cells infected with the mutant at the restrictive temperature formed three proteins (E1, E2 and C) which migrated to positions identical with those of purified virions and a precursor protein of E2 (PE2). The mutant virus was also able to form cytoplasmic nucleocapsids sedimenting at 140S as in the case of wild type infection. On the other hand, cells infected with the mutant could not induce a significant amount of hemadsorbing ability and the ability induced at the permissive temperature disappeared immediately after shifting up to the restrictive temperature. These results suggested that the mutant virus produced a defective envelope protein responsible for hemagglutination at the restrictive temperature. Owing to the incompleteness of the modification of the cell plasma membrane by the envelope proteins, viral nucleocapsids in the mutant infected cells could not bind to the plasma membrane.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01314665
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  • 9
    Digitale Medien
    Digitale Medien
    Chromatography of inorganic ions on diethyl-(2-hydroxy-propyl)aminoethyl cellulose layers in hydrochloric acid and in HCl-ammonium chloride media (1991)
    Springer
    Chromatographia 31 (1991), S. 60-62 
    Details
    ISSN: 1612-1112
    Schlagwort(e): Thin-layer chromatography ; Diethyl-(2-hydroxy-propyl)aminoethyl (QAE)-cellulose ; Hydrochloric acid and chloride media ; Inorganic ions ; Re(VII)
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary Thin-layer chromatographic behavior of 49 inorganic ions has been systematically studied on diethyl-(2-hydroxy-propyl)aminoethyl (QAE)-cellulose, a strongly basic anion exchanger, in aqueous hydrochloric acid and in acid-ammonium chloride media (0.01 to 1.0 mol dm−3). Aspects of the adsorption behavior of the ions on the cellulose are compared with those on other anion exchangers in the same eluent system. Feasibilities of separation of multicomponent mixtures are proposed on QAE-cellulose in both media. In particular, the selective separation of Re(VII) from many other ions can be accomplished on these systems.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02290497
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