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  • 1985-1989  (23)
  • 1965-1969  (17)
  • 1940-1944  (1)
  • 1920-1924  (2)
  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 65 (1989), S. 1972-1976 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: 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.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 57 (1986), S. 1880-1882 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: 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.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 57 (1986), S. 1929-1931 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: 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.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1365-2036
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: 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.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Computing 38 (1987), S. 341-345 
    ISSN: 1436-5057
    Keywords: Approximation ; n-dimensional grid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: 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.
    Notes: 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.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: 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.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-1440
    Keywords: Intravenous drug abusers ; Acquired immunodeficiency syndrome ; Immunocompetence ; Longitudinal study ; LAV/HTLV-III
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: 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.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Mathematische Zeitschrift 16 (1923), S. 126-147 
    ISSN: 1432-1823
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 345 (1968), S. 292-298 
    ISSN: 1432-2307
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei der makroskopischen Darstellung von Kalkablagerungen treten die calcifizierten Anteile der inneren elastischen Membran auch an den Milzarterien in Form von gepaarten schwarzen Kalkbändern oder ihren Fragmenten zutage. Diese stellen mineralisierte Ränder von Membranspalten dar und lassen daher die Form und Ausdehnung der Membranlücken an der Innenwand der Arterie makroskopisch erkennen. Die äußeren, sich ausbuchtenden Bögen der geschlängelten Milzarterien zeigen an ihrer inneren elastischen Membran ein stark ausgebildetes Spaltensystem und erweisen sich zugleich als ein bevorzugter Sitz der Membrancalcinose. Die stärkere Entwicklung des Spaltensystems der primären inneren elastischen Membran an den äußeren Bögen der Krümmer stellt offenbar die Folge einer hier stattfindenden Wanddehnung dar, die auch an der Verdünnung der Wand und an dem Auseinanderweichen der adventitiellen elastischen Geflechte erkennbar wird.
    Notes: Summary Calcific deposits have been demonstrated grossly in the internal elastic membrane of splenic arteries. They are seen on the margins of membrane gaps as pairs of continuous or interrupted black bands (“calcific bands”). When the calcification is pronounced, nearly the whole system of ramifying and communicating membrane gaps is discerned grossly on the inner surface of the arteries. On the inside of the convex segments of the tortuous splenic arteries the membrane gaps are more numerous and wider then on the inside of the concave segments. Consequently, the calcific deposits are commoner on the convex segments. The development of gaps in the internal elastic membrane on the convex segments is probably the result of distension by the greater hydraulic pressure on these parts of the tortuous artery. This also leads to thinning of the media and interruption of the elastic networks in the adventitia in these parts of the artery.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 348 (1969), S. 155-163 
    ISSN: 1432-2307
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Mit der abgewandelten v. Kossa-Methode ließen sich Kalkablagerungen in der Vena femoralis und Vena poplitea von 30 männlichen Verstorbenen im Alter von 63–88 Jahren in allen Fällen makroskopisch darstellen. Die Kalkablagerungen traten in Form von unterschiedlich großen, grau-schwarzen Flecken, Feldern und Streifen auf. In 5 Fällen nahmen sie über 1/4 der gesamten Venenwand ein. Die Kalkablagerungen fanden sich vorwiegend unmittelbar distal von Klappenansätzen, unterhalb von Klappenkommissuren, an der Venenwand der Klappensinus, proximal von Mündungen der Seitenäste und mitunter auch um diese Mündungen herum. Häufig lagen sie jedoch auch an der übrigen Veneninnenwand vor. Der mit der begleitenden Arterie verwachsene Streifen der Venenwand blieb dagegen zumeist frei von Kalk. Mikroadiographisch und histologisch handelte es sich um staubförmige und feinkörnige Kalkniederschläge, die ganz überwiegend in der verdickten Venenintima auftraten. In der Hälfte aller Fälle fanden sich inmitten von feinkörnig inkrustierten Intimapartien vereinzelte oder multiple gröbere Kalkschollen. Das untersuchte femoro-popliteale Segment stellt vermutlich den häufigsten Sitz ausgeprägter Calcinose-Formen im Venensystem alternder Menschen dar.
    Notes: Summary Calcifications of the femoral and popliteal veins were demonstrated grossly by a modified von Kossa technique and found in all thirty 63–88 year old male subjects. The calcifications appeared on the inside of veins as grayish or black spots, or as fields or broader stripes. In 5 subjects more than 1/4 of the intimal surface was occupied by the calcified areas. The calcifications were predominantly localized just below the valves and their commissures, in the sinus, at the entires of the tributaries, and proximal to them. The sector of vein that adhered to the artery remained, as a rule, free of calcific deposits. Microradiographically and microscopically the calcifications appeared as fine granular deposits within the markedly thickened intima. In one half of all cases, calcific plaques were found in the vein microradiographs. The femoral and popliteal veins represent presumably the most common site of the pronounced calcifications in the human venous system.
    Type of Medium: Electronic Resource
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