GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    (GaIn)(NAs)/GaAs vertical-cavity surface-emitting laser with ultrabroad temperature operation range (2000)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 76 (2000), S. 271-272 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The temperature dependence of the emission of a (GaIn)(NAs)/GaAs vertical-cavity surface-emitting laser is investigated. We find laser emission over an extremely broad temperature range from 30 K up to 388 K. The laser threshold varies from 5 kW/cm2 at 373 K down to a minimum of 1 kW/cm2 at 180 K and increases again to 4 kW/cm2 at 30 K. Picosecond emission dynamics after femtosecond optical excitation is obtained with peak delays below 33 ps and pulse widths below 20 ps over the entire operation range. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.125744
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Size-dependent predator–prey relationships between perch and their fish prey (2003)
    Oxford, UK : Blackwell Science Ltd
    Journal of fish biology 62 (2003), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Size-dependent interactions between piscivorous perch Perca fluviatilis (age ≥1 year) and their fish prey age 0 year perch, pikeperch Sander lucioperca and roach Rutilus rutilus in the biomanipulated Bautzen Reservoir indicated that the highest ratio of prey total length (LT) to predator LT was 59%. Perch LT and prey fish LT were positively and linearly related. Perch LT was strongly related with both gape width and gape height. Within the range 80–110 mm LT, the gape height of perch exceeded gape width, while beginning at 120 mm LT the gape width exceeded gape height. The minimum, maximum and mean prey LT and prey body depths of all three prey species increased with increasing predator size, but the increases in mean sizes of perch and pikeperch as prey were less than that of roach. The low limit of the ‘predation window’ observed in this study coupled with results of previous studies on perch in the Bautzen Reservoir indicated that perch had a major impact on the population dynamics of both perch and pikeperch.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1095-8649.2003.00092.x
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Telenavigation und Expertenkonsultation mit Hilfe eines stereotaktischen Operationsvideoservers (2000)
    Springer
    Mund-, Kiefer- und Gesichtschirurgie 4 (2000), S. S369 
    Details
    ISSN: 1434-3940
    Keywords: Schlüsselwörter ; Visualisierung patientenbezogener Informationen ; Wissensaustausch ; Datenübertragung ; Telekonsultation ; Bildfusionierungstechnologie ; Key words ; Visualization of patient-related information ; Exchange of knowledge ; Data transfer ; Teleconsulting ; Image fusion technology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The exponential increase of medical information creates a need for new methods in the visualization of medical imaging modalities for diagnosis and therapy. In this sense, visualization includes the display of medical image data and image-guided stereotaxic navigation as well as the advice of an expert. The Artma Virtual Patient® System enables a remote expert to observe the surgical procedure via the Internet and interactively modify the interoperative visualization from the remote location. The expert in the remote location receives the planning data almost in real time over TCP/IP from a stereotaxic videoserver. In addition to live video streaming, stereotaxic navigation data are sent over the network as rigid body coordinates. The expert modifies the surgical simulation on the remote computer and the modified operating plan is sent back to the operating site. By teleconsulting, the composite images and overlapping graphics –instruments, target structures, landmarks, contour – can be seen in affiliated clinics with the possibility of interactive graphical assistance. With this image fusion technology the knowledge of a remote expert is included in virtual data structures and visualized by the overlay with live video data (augmented reality) in real time during surgery.
    Notes: Zusammenfassung Die exponentielle Zunahme des Informationsflusses in der Medizin verlangt nach neuen Methoden zur Visualisierung patientenbezogener Informationen und Verbreitung von medizinischem Wissen in Diagnose und Therapie. Visualisierung in diesem Sinn beinhaltet die Darstellung medizinischer Bilddaten und bildgeführter stereotaktischer Navigation genauso wie den Rat eines Experten. Das Artma-Virtual-Patient-System ermöglicht einem sich in räumlicher Entfernung befindenden Experten Operationen via Internet mitzuverfolgen und mit Hilfe eines Remote-Computers die interoperative Visualisierung interaktiv zu modifizieren. Der Experte erhält die Planungsdaten nahezu in Echtzeit mittels TCP/IP von einem stereotaktischen Operationsvideoserver. Zusätzlich werden stereotaktische Navigationsdaten als Rigid-body-Koordinaten über das Netzwerk übertragen. Der Experte modifiziert die chirurgische Simulation am Remote-Computer, und der modifizierte Operationsplan wird in den Operationssaal zurückgeschickt. Durch die Telekonsultation können verschiedenartige Bilddaten und überlagerte Graphiken – Instrumente, Zielstrukturen, Landmarken, Konturen – in durch Internet verbundenen Kliniken dargestellt werden, wodurch interaktiv graphische Hilfe angeboten werden kann. Mit Hilfe dieser Bildfusionierungstechnologie werden das nicht vor Ort verfügbare Expertenwissen in virtuelle Datenstrukturen eingebunden und durch Überlagerung mit Livevideo Daten in Echtzeit während der Operation visualisiert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00014560
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Production of charged pions, kaons and antikaons in relativistic C + C and C + Au collisions (2000)
    Springer
    The European physical journal 9 (2000), S. 397-410 
    Details
    ISSN: 1434-601X
    Keywords: PACS. 25.75.Dw Particle and resonance production
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Production cross-sections of charged pions, kaons and antikaons have been measured in C+C and C+Au collisions at beam energies of 1.0 and 1.8 AGeV for different polar emission angles. The kaon and antikaon energy spectra can be described by Boltzmann distributions whereas the pion spectra exhibit an additional enhancement at low energies. The pion multiplicity per participating nucleon M(π+)/〈A part〉 is a factor of about 3 smaller in C+Au than in C+C collisions at 1.0 AGeV whereas it differs only little for the C and the Au target at a beam energy of 1.8 AGeV. The K+ multiplicities per participating nucleon M(K+)/ 〈A part〉 are independent of the target size at 1 AGeV and at 1.8 AGeV. The K- multiplicity per participating nucleon M(K-)/ 〈A part〉 is reduced by a factor of about 2 in C+Au as compared to C+C collisions at 1.8 AGeV. This effect might be caused by the absorption of antikaons in the heavy target nucleus. Transport model calculations underestimate the K-/K+ ratio for C+C collisions at 1.8 AGeV by a factor of about 4 if in-medium modifications of K-mesons are neglected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100500070024
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Klinische und feinmotorische Therapiekontrolle bei Morbus Wilson (2000)
    Springer
    Der Nervenarzt 71 (2000), S. 970-974 
    Details
    ISSN: 1433-0407
    Keywords: Schlüsselwörter Morbus Wilson ; Extrapyramidale Störung ; V-Scope-System ; Zeigefingertapping ; Spiralzeichentest ; Keywords Wilson's disease ; Extrapyramidal motor disturbances ; V-scope system ; Index finger tapping ; Drawing a spiral
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary At the time of diagnosis and after therapy, we examined 33 patients suffering from Wilson's disease. We applied a standardized diagnostic score system on the basis of clinical signs. Without observing any differences between pseudoparkinsonian and pseudosclerosis subtypes, patients with neurological symptoms significantly improved by 2.33 points. Patients with initially more severe symptoms showed the same improvement as less affected patients. Fine motor disturbances were evaluated using the V-scope system. Finger tapping and drawing a spiral were compared to values of a healthy control group (n=52). Patients with neurological symptoms showed significantly decreased frequencies in both tests. The clinical score was related to frequencies in finger tapping but not in drawing a spiral. Therefore finger tapping can be used as an objective diagnostic tool to evaluate the severity of Wilson's disease, while spiral testing appears to be a sensitive screening tool.
    Notes: Zusammenfassung Bei 33 Patienten mit einem Morbus Wilson wurden auf der Grundlage eines standardisierten Scoresystems zur klinisch-neurologischen Schweregradbeurteilung Verlaufskontrollen zwischen Datum der Diagnosestellung und nach medikamentöser Behandlung zum aktuellen Zeitpunkt durchgeführt. Hierbei konnte bei den neurologischen Verlaufstypen eine durchschnittliche Verbesserungsrate von 2,33 Punkten registriert werden. Zwischen den Untergruppen Pseudoparkinson- und Pseudoskleroseform ergaben sich keine signifikanten Unterschiede. Initial schwere Verläufe zeigten gleiche klinische Verbesserungsraten wie leichtere Formen. Zur Objektivierung feinmotorischer Störungen wurden bei allen Patienten die Vorzugsfrequenzen von Zeigefingertapping und Spiralzeichentest mit dem V-Scope-System gemessen und einer Kontrollgruppe (n=52) gegenübergestellt. Signifikant reduzierte Frequenzen fanden sich in beiden Tests bei den neurologischen Verlaufsformen. Die Ergebnisse der Korrelation des klinisch-neurologischen Schweregrades mit den V-Scope-Daten sprechen für ein eher stationäres Verhalten des Spiralzeichentests im Krankheitsverlauf. Dagegen variieren die Tappingfrequenzen in Abhängigkeit von klinischen Schweregradfluktuationen und ermöglichen damit eine objektive Verlaufsbeobachtung. Weder beim Tapping noch beim Spiralzeichentest konnten zwischen den 3 neurologischen Verlaufsformen signifikante Unterschiede registriert werden.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001150050694
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Hallervorden-Spatz-Krankheit Befundkonstellation am nigrostriatalen System (2000)
    Springer
    Der Nervenarzt 71 (2000), S. 660-665 
    Details
    ISSN: 1433-0407
    Keywords: Schlüsselwörter Hallervorden-Spatz-Krankheit ; Parkinsonsyndrom ; MRT ; 123J-β-CIT ; 123J-IBZM ; Keywords Hallervorden-Spatz Disease ; Parkinson's syndrome ; MRI ; 123I-β-CIT ; 123I-IBZM
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Hallervorden-Spatz disease (HSD), a rare extrapyramidal motor illness, is usually only confirmed after death. In vivo diagnosis has relied hitherto on the combination of typical magnetic resonance imaging (MRI) findings (the “eye of the tiger” sign) and heterogeneous clinical symptoms of movement disorder which have been regarded as almost pathognomonic. We report on the diagnostic contribution of 123J-β-CIT single photon emission computed tomography (SPECT) and 123J-IBZM SPECT in akinetic-rigid Parkinson's syndrome occurring in a case of HSD. In contrast to Parkinson's disease and multisystem atrophies, the results of both tests were normal. This constellation of findings shows that the degeneration lies primarily outside the nigrostriatal system, supporting arguments for the nosologic distinction of HSD from other extrapyramidal illnesses.
    Notes: Zusammenfassung Die Diagnose der Hallervorden-Spatz-Krankheit (HSD), einer seltenen extrapyramidal-motorischen Erkrankung, konnte gewöhnlich erst postmortal gesichert werden. Bislang galt der typische MRT-Befund mit dem “Tigerauge-Zeichen” in Kombination mit der heterogen klinischen Symptomatik von Bewegungsstörungen als nahezu pathognomonisch und diente zur Diagnosestellung zu Lebzeiten. In der vorliegenden Kasuistik soll der diagnostische Beitrag von 123J-β-CIT und 123J-IBZM-SPECT bei einem akinetisch-rigiden Parkinsonsyndrom im Rahmen einer HSD dargestellt werden. Für beide Untersuchungen wurden im Gegensatz zum M. Parkinson und Multisystematrophien Normalbefunde gefunden. Diese Befundkonstellation zeigt einerseits, dass die Degeneration primär außerhalb des nigrostriatalen Systems liegt, und andererseits unterstützt sie die Diskussion der nosologischen Abgrenzung der HSD von anderen extrapyramidalen Erkrankungen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001150050643
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Azithromycin: Eine anti-inflammatorische Wirksamkeit im Einsatz bei der chronischen rekurrierenden multifokalen Osteomyelitis? Eine vorläufige Mitteilung (2000)
    Springer
    Zeitschrift für Rheumatologie 59 (2000), S. 352-353 
    Details
    ISSN: 0340-1855
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003930070059
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    The North–East–South gradient of coronary heart disease mortality and case fatality rates in France is consistent with a similar gradient in risk factor clusters (2000)
    Springer
    European journal of epidemiology 16 (2000), S. 317-322 
    Details
    ISSN: 1573-7284
    Keywords: Coronary heart disease ; Risk factors ; WHO–MONICA Project
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In France, the mortality and case fatality rates of coronary heart disease follow a decreasing North–East–South gradient. The aim of the study was to evaluate the contribution of major cardiovascular risk factors to this gradient. To this end, the results of the third population survey of the WHO–MONICA Project conducted in three French geographically contrasted regions (the Urban Community of Lille in the North, the district of Bas-Rhin in the East and the district of Haute-Garonne in the South) are presented. One thousand seven hundred seventy-eight men and 1730 women aged 35–64years were randomly selected from the electoral rolls. Major coronary heart disease risk factors (hypertension, hypercholesterolemia, low high-density lipoprotein (HDL)-cholesterol, obesity, smoking, physical inactivity, diabetes) were studied. The results show that the distribution of major coronary heart disease risk factors is heterogeneous among geographical areas in France. However, the proportion of subjects with more than three risk factors is higher in the North than in the other regions and the number of subjects with no risk factor is higher in the South than in the other areas. This distribution of risk factors among regions supports the hypothesis that accumulation of coronary heart disease risk factors contributes to the decreasing North–East–South gradient of cardiovascular mortality rates in France.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007678526840
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Precision measurements of Higgs-chargino couplings in chargino pair production at a muon collider (2003)
    Springer
    The European physical journal 29 (2003), S. 587-595 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. We study chargino pair production on the heavy Higgs resonances at a muon collider in the MSSM. At $\sqrt{s} \approx 350$ GeV cross sections up to 2 pb are reached depending on the supersymmetric scenario and the beam energy spread. The resonances of the scalar and pseudoscalar Higgs bosons may be separated for $\tan\beta 〈 8$ . Our aim is to determine the ratio of the chargino couplings to the heavy scalar and pseudoscalar Higgs boson independently of the specific chargino decay characteristics. The precision of the measurement depends on the energy resolution of the muon collider and on the error in the measurement of the cross sections of the non-Higgs channels including an irreducible standard model background. With a high energy resolution the systematic error can be reduced to the order of a few percent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epjc/s2003-01249-6
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...