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  • 1
    Electronic Resource
    Electronic Resource
    High-pressure NMR probes for the in situ investigation of gas/liquid reactions (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 3307-3310 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Three different types of nuclear magnetic resonance (NMR) probes have been developed for investigating multiple phase (gas/liquid) reactions in situ at ambient and high pressure. Versions requiring only minimal modifications of existing NMR probes, low volume probes, and high precision flow systems have been optimized for specific boundary conditions. Pressures ranging from 1 to 20 bar have been successfully applied. The arrangements are especially attractive for the in situ investigations of homogeneous hydrogenation reactions displaying nuclear spin polarization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1142543
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  • 2
    Electronic Resource
    Electronic Resource
    Optical determination of carrier density in pseudomorphic AlGaAs/InGaAs/GaAs hetero-field-effect transistor structures by photoluminescence (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 59 (1991), S. 2739-2741 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A photoluminescence (PL) analysis of a highly degenerate two-dimensional electron gas (2DEG) in pseudomorphic modulation-doped AlGaAs/InGaAs/GaAs transistor structures is reported. The PL response from samples with one or two populated electron subbands is dominated by one or two spectral bands, respectively, with a high-energy intensity cutoff. The spectral width varies linearly with the measured 2DEG sheet density ns or with a Schottky barrier depletion voltage, which directly reflects the two-dimensional density of states (2DDOS) below the Fermi level. We used the effective electron mass from cyclotron resonance experiments to evaluate the 2DDOS and can thus directly determine ns from the spectral width via the 2DDOS. Independent ns values were obtained from Shubnikov–de Haas measurements and agree excellently with ns values from PL.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.105904
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  • 3
    Electronic Resource
    Electronic Resource
    The Collaborative Randomised Amnioinfusion for Meconium project (CRAMP): 2. Zimbabwe (1998)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 105 (1998), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Objective To evaluate transcervical amnioinfusion for meconium stained amniotic fluid during labour.Design Multicentre randomised controlled trial.Setting A large urban academic hospital. Electronic fetal heart rate monitoring was not used.Participants Women in labour at term with moderate or thick meconium staining of the amniotic fluid.Interventions Transcervical amnioinfusion of 500 mL saline over 30 minutes, then 500 mL at 30 drops per minute. The control group received routine care. Blinding of the intervention was not possible.Main outcome measures Caesarean section, meconium aspiration syndrome and perinatal mortality.Results There was no difference in risk for caesarean section in the two groups (amnioinfusion 9.5%vs control 12.3%; RR 0.84, 95% CI 0.53–1.32). Meconium aspiration syndrome was significantly less frequent in the amnioinfusion group (3.1%vs 12.8%; RR 0.24, 95% CI 0.12–0.48), and there was a trend towards fewer perinatal deaths (1.2%vs 3.6%; RR 0.34, 95% CI 0.11–1.06).Conclusions Amnioinfusion is technically feasible in a developing country situation with limited intrapartum facilities. In this study amnioinfusion for meconium stained amniotic fluid was associated with striking improvements in perinatal outcome.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.1998.tb10092.x
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  • 4
    Electronic Resource
    Electronic Resource
    Uptake and nuclear transport of Neisseria IgA1 protease-associated α-proteins in human cells (1995)
    Osney Mead, Oxford OX2 0EL, UK : Blackwell Scientific Publications
    Molecular microbiology 17 (1995), S. 0 
    Details
    ISSN: 1365-2958
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Pathogenic Neisseria species, the causative agents of gonorrhoea and bacterial meningitis, encode a family of polymorphic exo-proteins which are autoproteolytically processed into several distinct extracellular components, including an IgA1 protease and an α-protein. IgA1 protease, a putative virulence determinant, is a sequence-specific endopeptidase known to cleave human IgA1, but additional target proteins have been postulated. The physical linkage of IgA1 protease and a-protein suggests a functional relationship of both precursor components. Previous work has shown that α-protein is essential neither for extracellular transport nor for the proteolytic activity of IgA1 protease. Intriguingly, α-proteins carry amino acid sequences reminiscent of nuclear location signals of viral and eukaryotic proteins. Here we demonstrate the functionality of these nuclear location signal sequences in transfected eukaryotic cells. Chimeric α-proteins show nuclear transport and selectively associate with nucleolar structures. More importantly, native purified α-proteins are capable of entering certain human primary cells from the exterior via an endocytotic route and accumulate in the nuclei. The neisserial α-proteins share several features with eukaryotic transcription factors, such as the formation of dimers via a heptad repeat sequence. We propose a role for a-proteins in the regulation of host-cell functions. As the α-proteins are covalently connected with IgA1 protease they may also serve as carriers for the IgA1 protease into human cells where additional proteolytic targets may exist. Neisseria meningitidis, which locally colonizes the nasopharyngeal mucosa of many human individuals without apparently causing symptoms, secretes this nucleus-targeted factor in large quantities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2958.1995.mmi_17061073.x
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  • 5
    Electronic Resource
    Electronic Resource
    Cross-reactivity between
T cells and bacteria (1999)
    Copenhagen : Munksgaard International Publishers
    Allergy 54 (1999), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1034/j.1398-9995.1999.00302.x
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  • 6
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    Unknown
    Wählergenerationen in Preussen. Zwischen Kaiserreich und Republik (1991)
    Harlow, etc. : Periodicals Archive Online (PAO)
    English Historical Review. 106:418 (1991:Jan.) 249 
    Details
    ISSN: 0013-8266
    Topics: History
    Notes: SHORTER NOTICES
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:0027-1991-106-18-000155
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  • 7
    Electronic Resource
    Electronic Resource
    Erklären und Verstehen in der Psychiatrie (1998)
    Springer
    Der Nervenarzt 69 (1998), S. 386-389 
    Details
    ISSN: 1433-0407
    Keywords: Schlüsselwörter Erklären ; Verstehen ; Erkenntnislehre ; Theorie der Psychiatrie ; Key words Explanantion ; Understanding ; Epistemology ; Theory of psychiatry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The philosophical debate on explanation and understanding also led to basic methodological reflections in psychiatry. Subsuming one fact under a general law is the characteristic feature of scientific explanations. In this way, deductive conclusions can be achieved with a high degree of objectivity. Hermeneutical understanding makes way for interpretations in front of a given theoretical matrix. On the other hand, sympathetic understanding is a matter of conceiving single-part items as a consequence of other singular aspects (e.g., tracing back an action to an intention). If one understands the growth of knowledge as a rational and critical process, it seems no more justified to insist on exclusive methodologically based positions.
    Notes: Zusammenfassung Die philosophische Debatte um Erklären und Verstehen hat auch zu grundsätzlichen methodischen Reflexionen in der Psychiatrie geführt. Kennzeichnend für wissenschaftliche Erklärungen ist die Subsumtion eines Einzelsachverhaltes unter eine allgemeine Regel. Auf diese Weise erhält man deduktiv Schlußfolgerungen mit einem hohen Grad an Objektivität. Beim nachfühlenden Verstehen geht es darum, Einzelsachverhalte als Folge anderer singulärer Momente zu begreifen (z.B. die Zurückführung einer Handlung auf eine Intention). Hermeneutisches Verstehen ermöglicht hingegen Interpretationen vor dem Hintergrund einer gegebenen theoretischen Matrix. Betrachtet man den Fortschritt des Wissens insgesamt als einen rationalen und kritischen Prozeß, dann erscheinen allerdings methodenzentrierte Standpunkte nicht mehr plausibel.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001150050287
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  • 8
    Electronic Resource
    Electronic Resource
    Isolated and combined deficiencies of NADH dehydrogenase (complex I) in muscle tissue of children with mitochondrial myopathies (1990)
    Springer
    European journal of pediatrics 150 (1990), S. 104-108 
    Details
    ISSN: 1432-1076
    Keywords: Reduced nicotinamide adenine dinucleotide (NADH) dehydrogenase ; Respiratory chain ; Mitochondrial myopathies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We describe eight children with complex I deficiency, four of them with an isolated, the other four with an additional deficiency of complex IV. Clinical, chemical and morphological findings were compared from patients with isolated and combined deficiency. In both groups, the age of onset of symptoms was between the 1st day and the 4th month of life. Clinical and biochemical heterogeneity were observed. We found no correlation between residual activity of complex I in muscle, blood lactate level, and severity of clinical symptoms. Newborns presenting with severe lactic acidosis and children with later onset myopathy were seen in both groups. The group with combined complex I deficiency showed a more severe clinical course. By light microscopy ragged red fibres were only found in two patients with combined deficiency. However, by electron microscopy structural alterations of the mitochondria were observed in six out of seven muscle specimens.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02072049
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  • 9
    Electronic Resource
    Electronic Resource
    Antagonismusin vitro vonBacillus spp. gegenüberRhizoctonia solani undPythium spp. (1993)
    Springer
    Journal of pest science 66 (1993), S. 121-125 
    Details
    ISSN: 1612-4766
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Zusammenfassung Es konnten 132Bacillus-Stämme isoliert und gegenüber7 Rhizoctonia-solani- und 6Pythium-Stämmen auf Antagonismusin vitro untersucht werden. Die gefundenen Antagonisten hemmten die Pilzisolate unterschiedlich stark, so daß Gemische von Antagonisten für die Praxis zu empfehlen sind.
    Notes: Abstract There were 132Bacillus-strains isolated and tested for antagonism against 7 strains ofRhizoctonia solani and 6 strains ofPythium spp. The isolated antagonists didn't show a uniform effect against the tested strains ofRhizoctonia solani andPythium spp. For an application in practice it will be better to use a mixture of antagonists.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01906840
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  • 10
    Electronic Resource
    Electronic Resource
    Isolation und Pathogenität vonRhizoctonia solani Kühn an Gurken und Buschbohnen (1994)
    Springer
    Journal of pest science 67 (1994), S. 34-39 
    Details
    ISSN: 1612-4766
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Zusammenfassung Es wurden 79Rhizoctonia solani-Isolate von verschiedenen Orten in Baden-Württemberg isoliert. Es konnten Isolate gefunden werden, die gegenüber Gurken und Bohnen pathogen waren. Bei Bohnen kann das Sproßgewicht als leicht zu erfassender Parameter für die Quantifizierung der Schadwirkung benutzt werden. Eine trockene Lagerung von mitRhizoctonia solani durchwachsenen Haferkörnern erwies sich als besonders geeignet für eine Stammkulturhaltung.
    Notes: Abstract 79Rhizoctonia solani strains were isolated from different locations in Baden-Württemberg. Some of these strains were pathogenic against cucumber and bean. The sprout-weight of bean can be used as an easy-to-measure parameter for quantification of the damage caused by teh fungus. The dry storage of oat seeds, previously inoculated withRhizoctonia solani, has been shown to be the best method for long-term storage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01907348
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