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  • 1985-1989  (23)
  • 1970-1974  (16)
  • 1880-1889  (1)
  • 1
    Digitale Medien
    Digitale Medien
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 65 (1989), S. 1972-1976 
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: A new design for radiation-sensing field-effect transistors (RADFETs) is presented, involving the use of very thick silicon nitride layers deposited on top of a high-quality thermal silicon dioxide. In contrast to previous RADFET fabrication procedures, no attempt was made to introduce hole traps into the thermal oxide. Instead the trapping layer at the nitride oxide interface was used to store the positive charge which forms the basis for operation of the RADFET. Data is presented which shows hole transport in the thermal oxide. Models explaining the field dependence of the response and the saturation behavior of the dual dielectric device are given. These RADFETs are more stable than any previously described in the literature and have a sensitivity of 86 μV/rad dose at room temperature.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 57 (1986), S. 1880-1882 
    ISSN: 1089-7623
    Quelle: AIP Digital Archive
    Thema: Physik , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: Over the past three years, the total TMX-U diagnostic data base has grown to exceed 10 Mbytes from over 1300 channels; roughly triple the originally designed size. This acquisition and processing load has resulted in an experiment repetition rate exceeding 10 min per shot using the five original Hewlett–Packard HP-1000 computers with their shared disks. Our new diagnostics tend to be multichannel instruments, which, in our environment, can be more easily managed using local computers. For this purpose, we are using HP series 9000 computers for instrument control, data acquisition, and analysis. Fourteen such systems are operational with processed format output exchanged via a shared resource manager. We are presently implementing the necessary hardware and software changes to create a local area network allowing us to combine the data from these systems with our main data archive. The expansion of our diagnostic system using the parallel acquisition and processing concept allows us to increase our data base with a minimum of impact on the experimental repetition rate.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 57 (1986), S. 1929-1931 
    ISSN: 1089-7623
    Quelle: AIP Digital Archive
    Thema: Physik , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: A commercial database software package has been used to create several databases and tools that assist and enhance the ability of experimental physicists to analyze data from the Tandem Mirror Experiment-Upgrade (TMX-U) experiment. This software runs on a DEC-20 computer in M-Divisions's User Service Center at Lawrence Livermore National Laboratory (LLNL), where data can be analyzed off line from the main TMX-U acquisition computers. When combined with interactive data analysis programs, these tools provide the capability to do batch-style processing or interactive data analysis on the computers in the USC or the supercomputers of the National Magnetic Fusion Energy Computer Center (NMFECC) in addition to the normal processing done by the TMX-U acquisition system. One database tool provides highly reduced data for searching and correlation analysis of several diagnostic signals within a single shot or over many shots. A second database tool provides retrieval and storage of unreduced data for use in detailed analysis of one or more diagnostic signals. We will show how these database tools form the core of an evolving off-line data analysis environment on the USC computers.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    facet.materialart.
    Unbekannt
    Provincetown, Mass., etc. : Periodicals Archive Online (PAO)
    The Journal of Genetic Psychology. 123:2 (1973:Dec.) 285 
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 5
    ISSN: 1365-2036
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: The object of this double-blind, multicentre study was to compare duodenal ulcer healing rates after 2 and 4 weeks of treatment with either 20 mg omeprazole o.m. or 150 mg ranitidine b.d. One hundred and eighty-one patients were randomized: 91 received omeprazole and 90 received ranitidine.In a per protocol analysis at 2 weeks, 63% of the patients were healed on omeprazole and 65% of the patients were healed on ranitidine (N.S.); at 4 weeks 91% were healed in the omeprazole group and 96% were healed in the ranitidine group. There were no differences in ulcer symptom relief between the two groups. There were no significant changes in laboratory values in either of the groups. Adverse events were few and mainly mild and transient.We conclude that both omeprazole (20 mg o.m.) and ranitidine (150 mg b.d.) result in rapid, ulcer healing rates.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 6
    Digitale Medien
    Digitale Medien
    Springer
    Graefe's archive for clinical and experimental ophthalmology 181 (1971), S. 216-227 
    ISSN: 1435-702X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung An einem experimentell erzeugten Hornhautödem bzw. an normalen Hornhäuten von Kaninchen wird die Wirkung von Glucose- und Glycerinlösungen unterschiedlicher Konzentration verglichen. Als Maß des Quellungsgrades dient die Hornhautdicke, die mit einem Meßgerät eigener Anfertigung in Anlehnung an das Gerät von Jäger registriert wird. Es wurden folgende Ergebnisse erzielt: 1. Die normale Kaninchenhornhaut konnte sowohl durch Glucose- als auch durch Glycerinlösung bis etwa auf 50% der Normaldicke entquollen werden. 2. Glucoselösungen wirkten auf das experimentell erzeugte Hornhautödem stärker entquellend als glycerinlösungen gleicher Osmolarität. 3. Eine geringe regenerationsfördernde Wirkung auf das Corneaendothel konnte bei Glycerinbehandlung deutlicher nachgewiesen werden als bei Glucoselösung vergleichbarer Konzentration. Aus den Ergebnissen folgt, daß sich Glycerin ebenso wie Glucose zur Entquellung eines Hornhautödems eignet. Eine Entscheidung über die Verwendbarkeit von Glycerinlösung beim Hornhautödem des Menschen erfordert weitere Untersuchungen.
    Notizen: Summary The effect of glucose and glycerine solutions of different concentrations was examined on a corneal oedema produced experimentally and on normal corneae of rabbits, respectively. The swollen cornea was measured by means of a home-made device similar to that described by Jäger! The following results were obtained: 1. By instillation of glucose as well as glycerine solutions it was possible to reduce the thickness of the normal rabbit cornea to 50% of the original value. 2. Glucose solutions showed a more dehydrating effect on the experimentally produced corneal oedema than glycerine solutions of the same osmolarity. 3. A slight effect favouring the regeneration of the corneal endothelium could be seen more distinctly after treatment with glycerine than after the instillation of glucose solutions of comparable concentrations. It is concluded that glycerine and glucose are equally suitable for dehydrating a corneal oedema. Further investigations, however, are necessary before glycerine solutions can be used in human corneal oedemata.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 7
    Digitale Medien
    Digitale Medien
    Springer
    Computing 38 (1987), S. 341-345 
    ISSN: 1436-5057
    Schlagwort(e): Approximation ; n-dimensional grid
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Informatik
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Es wird ein Verfahren zur Bestimmung einer Translation eines rechtwinkeligen Gitters mit der Eigenschaft, daß eine endliche Punktmenge des ℝN möglichst gut durch Gitterpunkte approximiert wird, angegeben.
    Notizen: Abstract A procedure is given for translating a rectangular grid in such a way that a finite set of points in ℝN is approximated as good as possible by points of the translated grid.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 8
    Digitale Medien
    Digitale Medien
    Springer
    Graefe's archive for clinical and experimental ophthalmology 184 (1972), S. 155-166 
    ISSN: 1435-702X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Die vorliegende Arbeit schließt an unsere I. Mitteilung an und führt nach statistisch orientierter Auswertung der klinischen Befunde zu folgenden Ergebnissen: 1. Junge Wistar-Ratten (mittleres Körpergewicht 119 g) reagierten auf einmalige intracutane Injektion von 0,08–0,1 ml kompletten Freundschen Adjuvans zu 76,1% mit Arthritis, zu 79,5% mit Augenentzündungen, zu 51,6% mit Ohrknötchen und zu 58,7% mit Schwanzknoten. 2. Nach Latenzzeiten zwischen 1 und 80 Tagen trat bei 67,7% der untersuchten Augen eine Uveitis anterior auf. Bei 21 Tieren blieb sie auf ein Auge beschränkt. In 37 von 49 Fällen beidseitiger Affektion lagen zwischen dem Entzündungsbeginn von rechtem und linkem Auge Intervalle von 1–37 Tagen. 3. Bei 58 von 119 Augen (48,7%) mit einer Uveitis anterior kam es im Verlauf von 101–102 Tagen zu klinisch sicheren Remissionen. 35 Fälle mit einem, 14 mit zwei und 9 Fälle mit drei Rezidiven wurden beobachtet. Beginn. Dauer und Schweregrad der Schübe gleicher Ordnung sowie die Dauer entzündungsfreier Intervalle werden, abgestuft nach der Schubzahl der Verläufe, in Form arithmetischer Mittel angegeben. Remissionslose Entzündungen traten meist später auf und hielten länger an als die ersten Schübe rezidivierender Entzündungen. Die Entzündungsschübe I–III begannen jeweils in Abständen von etwa 2 Wochen, der Schub IV bereits nach einem Intervall von 8–9 Tagen. Eine Tendenz zu rascherem Abklingen in der Reihe aufeinanderfolgender Entzündungsschübe war nicht generell von einer Milderung der Symptome begleitet. 4. Mit der Arthritis als augenfälligstem Symptom der Adjuvans-Krankheit zeigten sich die Augenveränderungen eng, aber nicht zwingend, Ohrknötchen indessen als nahezu obligatorisch assoziiert. Als einziges Zeichen einer Adjuvans-Krankheit wurden Augenentzündungen dreimal häufiger beobachtet als Arthritis.
    Notizen: Summary The present publication is a continuation of our first communication. A statistically orientated valuation of clinical findings leads to the following results: 1. Young Wistar rats (average body weight 119 g) responded to a single intracutaneous injection of 0.08–0.1 ml of Freund's complete adjuvant by developing several symptoms of adjuvant disease. 76.1% of the animals developed arthritis, 79.5% inflammations of the eyes and 51.6% and 58.7% respectively showed nodular alterations in external ears and tail. 2. After a latent period from 1 to 80 days 67.7% of the eyes examined developed iridocyclitic changes. In 21 animals inflammation was limited to one eyeball. In 37 out of 49 cases of bilateral affection the interval, between onset of inflammation in the right and the left eyes varied between 1 and 37 days. 3. During a period of 101–102 days clinically assured recidivations were demonstrated in 58 out of 119 eyes (48.7%) showing iridocyclitis. 35 cases showed one, 14 two and 9 cases three recidivations. Onset, duration and severity of batches of the same rank as well as the duration of intervals without inflammatory signs —graduated according to the number of batches per course—are stated as arith-metical means. Non-relapsing inflammations mostly began later and lasted longer than the first batches of relapsing inflammations. The inflammatory batches II and III started after an interval of 2 weeks, and the batch IV already after an interval of 8–9 days. A tendency to quicker improvement in the series of successive batches was not generally accompanied by a moderation of symtoms. 4. Eye lesions showed a close but no obligatory association with the arthritis as the most obvious symptom of adjuvant disease. The development of nodular changes in the external ears, however, seemed bound to the presence of arthritis. As the only sign of an adjuvant disease eye lesions were observed three times more frequently than arthritis.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 9
    ISSN: 1434-6052
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The relative yield of high transverse momentum protons measured inpp interctions at the CERN ISR is calculated in the framework of simple parton models. Whereas models based exclusively on quark and gluon scattering fail to describe the data, the hypothesis of diquark scattering provides a quantitative understanding of the measured dependences on transverse momentum, polar angle, and centre-of-mass energy. Different assumptions on diquark structure functions are tested.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 10
    ISSN: 1432-1440
    Schlagwort(e): Intravenous drug abusers ; Acquired immunodeficiency syndrome ; Immunocompetence ; Longitudinal study ; LAV/HTLV-III
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary To date, long-term intravenous drug users studied at regional European centers of illicit drug use have had a high number of LAV/HTLV-III infections. Among 200 patients remanded by court or referred from prison to a special clinic in northern Germany for young delinquent drug abusers, 26 (17%) of 157 IV drug abusers were HTLV-III seropositive. With 40% seropositive, female patients showed a significantly higher prevalence of HTLV-III infection than males. The results of longitudinal serological, immunological, and clinical observations over periods of 12 months and 2–3 years indicate that under conditions of continuous medical surveillance, sound preventive counseling, and steady therapeutic care during long-term coeducative residential treatment of drug abusers, neither detectable HTLV-III transmission nor definite progression of HTLV-III induced impairment of immune regulatory functions must ensue.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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