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  • 1
    Digitale Medien
    Digitale Medien
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 85 (1986), S. 7062-7076 
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: Total integral scattering cross sections have been measured for Li2 molecules in selected rotational and vibrational states up to v=21. The vibrationally highly excited states with energies up to 80% of the dissociation energy were prepared by Franck–Condon laser pumping. With increasing vibrational quantum number the observed cross sections show first a 10% decrease followed by a 20%–25% rise. A model potential has been developed based on an ab initio potential for the vibrational ground state to account for the effect of vibrational stretching. The results provide for the first time direct information on the bond-distance dependence r of the complete potential hypersurface V(R,r,γ) (R distance between centers of mass and γ angle between r and R) of an atom–molecule system.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 88 (1988), S. 5986-5986 
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 52 (1988), S. 1936-1938 
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: A simple distributed feedback (DFB) laser line narrowing arrangement consisting of an adapted coupler and a cleaved fiber end resonator has been realized. Linewidths below 100 kHz have been obtained for different commercial 1300 nm and 1550 nm DFB lasers.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    ISSN: 1365-2044
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Until recently, the most appropriate technique of intubating a patient with a cervical spine injury has been the subject of debate. Tracheal intubation by means of the intubating laryngeal mask (Fastrach™), a modified conventional laryngeal mask airway, seems to require less neck manipulation. The aim of this study was to compare the excursion of the upper cervical spine during tracheal intubation using direct laryngoscopy with that during intubation via the laryngeal mask (Fastrach™), by examination of lateral cervical spine radiographs in healthy young patients. The intubating laryngeal mask (Fastrach™) caused less extension (at C1−2 and C2−3) than intubation by direct laryngoscopy. Direct laryngoscopy is still the fastest method to secure an airway provided no intubating difficulties are present. However, in trauma patients requiring rapid sequence induction and in whom cervical spine movement is limited or undesirable, the intubating laryngeal mask (Fastrach™) is a safe and fast method by which to secure the airway.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 5
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Science, Ltd
    Plant, cell & environment 25 (2002), S. 0 
    ISSN: 1365-3040
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie
    Notizen: The effects of soil moisture distribution on water uptake of drip-irrigated corn were investigated by simultaneously monitoring the diurnal evolution of sap flow rate in stems, of leaf water potential, and of soil moisture, during intervals between successive irrigations. The results invalidate the steady-state resistive flow model for the continuum. High hydraulic capacitance of wet soil and low hydraulic conductivity of dry soil surrounding the roots damped significantly diurnal fluctuations of water flow from bulk soil to root surface. By contrast, sap flow responded directly to the large diurnal variation of leaf water potential. In wet soil, the relation between the diurnal courses of uptake rates and leaf water potential was linear. Water potential at the root surface remained nearly constant and uniformly distributed. The slope of the lines allowed calculating the resistance of the hydraulic path in the plant. Resistances increased in inverse relation with root length density. Soil desiccation induced a diurnal variation of water potential at the root surface, the minimum occurring in the late afternoon. The increase of root surface water potential with depth was directly linked to the soil desiccation profile. The development of a water potential gradient at the root surface implies the presence of a significant axial resistance in the root hydraulic path that explains why the desiccation of the soil upper layer induces an absolute increase of water uptake rates from the deeper wet layers.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 6
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    Plant, cell & environment 10 (1987), S. 0 
    ISSN: 1365-3040
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie
    Notizen: Abstract The effcct of the transition from fully to partially wetted soil voluine on transpiration rate and hydraulic conductance of mature citrus trees was examined in a 23-year-old, coninicrcial, sprinklerirrigated, Shanio u t i orange orchard. I rriga t i on frequency was determined by the rate of water loss from the soil, a s measured by neutron probes. The hydraulic conductance of tlic tree was coniputed from the rclationship between sap flow i n the trunk and leaf water potential. The diurnal valucs of leaf water potential and sap flow shifted towards lower levels as tlie water stored in the root zone was depleted. In the fully wetted soil volume the tree hydraulic conductance remained constant throughout the irrigation period, from June to Novcniber. However, partial wetting of the soil volume (40%) caused a reduction in the hydraulic conductance of the tree. Tlie decreased hydraulic conductance is attributed to tlie permanent interruption of water transport in part of tlie root system. Tlie rcsults of tlie experiment suggest that despite tlie increase of irrigation frequency, partial wetting intensifies water stress in tlie trees.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 7
    Digitale Medien
    Digitale Medien
    Oxford, UK : Munksgaard International Publishers
    Contact dermatitis 46 (2002), S. 0 
    ISSN: 1600-0536
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Tacrolimus (FK 506) is a macrolide discovered in 1984 as a metabolic product of Streptomyces tsukabaensis. It has been used successfully in treating atopic dermatitis, allergic contact dermatitis, lichen planus mucosae and pyoderma gangrenosum. In the present study, we evaluated the anti-inflammatory activity of FK 506 in 2 human skin inflammation models. FK 506 as Protopic® cream was tested (i) in a 4-day repetitive irritation test with 2 × daily application of sodium lauryl sulphate (SLS), and (ii) in a UVB erythema model. The effect was evaluated visually and quantified by non-invasive bioengineering methods, namely chromametry and tewametry (TEWL). When FK 506 was applied 30 min after SLS irritation, an increased inflammation in comparison to controls was observed with all 3 methods, with only the TEWL data reaching statistical significance. 1 × daily application of FK 506 for 5 days, starting at the end of the 4-day irritation period, was without any effect. Similarly, no effect of FK 506 was seen in the UVB model. In conclusion, FK 506 was shown to enhance experimentally induced irritant contact dermatitis and not to accelerate healing of irritant contact dermatitis and UVB erythema.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 8
    ISSN: 1433-0458
    Schlagwort(e): Schlüsselwörter Telemedizin ; Videokonferenz ; Telekonsultation ; Minimal-invasive Chirurgie ; ISDN ; Keywords Telemedicine ; Videoconference ; Teleteaching ; Minimal invasive surgery ; ISDN
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Abstract “Telemedicine” is a major new development with great potential for improving health care delivery. It therefore affects each department in medicine. There is a great deal of telemedicine activity around the world. However, the term telemedicine is not clear. It describes all forms of medical information, transferred from a relevant distance by an electronic transfer media. An essential condition for communication is the intelligibility between transmitter and receiver. Because of different transmitting technologies and networks in distinct countries, towns, or even academic institutions, satisfactory contact is not possible. In the last decade, the demand for worldwide audiovisual data transmission has led to the standardization of telecommunication media. Therefore it is no longer necessary to transport medical data (or even patients) by conventional manners, e.g., post, car, or aircraft. Telemedicine for diagnosis and management can be bidirectional in real-time, long-distance videoconferencing, in which the patient consults a specialist located at the remote site, or it can be the transmission of either real-time or pre-recorded images and data to a remote expert, as in teleradiology or telepathology. Another application is the use of videoconference systems in the course of meetings. The remote specialist has the opportunity to take part in the session, e.g., with a lecture. Furthermore, the remote specialist can demonstrate special operative techniques for teleteaching purposes, some of which may be specialities of the particular medical unit, e.g., operation in open NMR, telemanipulation, or telerobotic procedures. In this paper, we describe the use and benefit of a videoconference between the departments of otolaryngology and head and neck surgery of the Universities of Tübingen and Leipzig by means of an “ISDN-based videoconference system”. During the meeting, the “operating course for reconstructive surgery in the head and neck”, the practicability, reliability, costs and quality were determined and compared with other technologies for audiovisual data transfer.
    Notizen: Zusammenfassung Der Begriff “Telemedizin” umschreibt eine Summe von Entwicklungen, die mit einem großen Telekommunikationspotential zur flächendeckenden Krankenversorgung beitragen und somit mittlerweile jeden medizinischen Fachbereich berühren. Den verschiedenen Anwendungsgebieten ist in der Definition folgender Aspekt gemeinsam: der Transfer aller Formen von medizinischer Information über eine relevante räumliche Distanz mittels moderner Datenübertragungstechnologien. Wesentliche Bedingung zur Kommunikation ist die Möglichkeit der Verständigung zwischen Sender und Empfänger. In den letzten Jahren hat der Bedarf nach weltweitem Datenaustausch eine zunehmende Standardisierung und Kompatibilität der verschiedenen Übertragungstechnologien mit sich gebracht und erlaubt nun einen Datentransfer auf kurzem Wege (z. B. ISDN-Technologie, Internet). In der Medizin bedeutet dies, dass in speziellen Fragestellungen Befunde/Patienten nicht mehr konventionell per Bote, Post oder Verkehrsmittel zum Arzt gelangen, sondern z. B. mittels einer audiovisuellen Übertragung über ein Telekommunikationsmedium, bei der der Zugang auf die benötigte Information (z. B. Gespräch zwischen Patient und Spezialist, endoskopischer Befund) in der Regel bidirektional hergestellt wird (Telekonsultation). Ein weiterer Ansatzpunkt ist der Einsatz bei Tagungen in Form von Videokonferenzen. Hierbei besteht die Möglichkeit, entfernt lokalisierte Spezialisten mittels audiovisueller Übertragung in die Tagung (z. B. Vortrag, Rundtischgesprächen) mit einzubeziehen. In operativen Fächern können z. B. bestimmte Operationstechniken den Tagungsteilnehmern demonstriert werden und somit den Weiterbildungscharakter im Sinne des Teleteaching unterstützen. Im Rahmen eines “Operationskurses zur rekonstruktiven Chirurgie im Kopf-Hals-Bereich” zwischen den Universitätskliniken Tübingen-Leipzig führten wir eine Videokonferenzübertragung mitttels “ISDN-basierendem Videokonferenzsystem” durch. Praktikabilität, Zuverlässigkeit, Kostenaspekt und Qualität wurden ermittelt und im folgenden mit anderen audiovisuellen Übertragungstechnologien diskutiert.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 9
    facet.materialart.
    Unbekannt
    Paris : Periodicals Archive Online (PAO)
    Revue de littérature comparée. 6 (1926) 115 
    ISSN: 0035-1466
    Thema: Allgemeine und vergleichende Sprach- und Literaturwissenschaft. Indogermanistik. Außereuropäische Sprachen und Literaturen
    Notizen: Notes et documents
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 10
    facet.materialart.
    Unbekannt
    Wiesbaden : Periodicals Archive Online (PAO)
    Geographische Zeitschrift. 73:2 (1985) 63 
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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