GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
Filter
  • Springer  (8)
  • American Institute of Physics (AIP)  (2)
  • National Academy of Sciences
  • 1990-1994  (10)
  • 1
    Digitale Medien
    Digitale Medien
    X-ray detection characteristics of microchannel plates using synchrotron radiation in the energy range from 0.06 to 0.6 keV (1990)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 61 (1990), S. 2566-2570 
    Details
    ISSN: 1089-7623
    Quelle: AIP Digital Archive
    Thema: Physik , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: The characteristics of microchannel plates (MCPs) for x-ray detection have been investigated with continuous x-ray energy variation using synchrotron radiation in the XUV and soft x-ray region (from 60 to 600 eV). The current response data have shown x-ray absorption fine structure (EXAFS or XANES) near the oxygen K absorption edge as well as a jump structure near the silicon L edge; these structures are explained by the surface composition of channel walls (SiO2). The data show that the surface layer of a microchannel is essential for x-ray detection by MCPs in this energy range. The precise current response curve has been completed for the wide x-ray energy range from 0.06 to 82 keV combined with the previously reported data [Kondoh et al., Rev. Sci. Instrum. 59, 252 (1988); Cho et al., ibid. 59, 2453 (1988); Yamaguchi et al., ibid. 60, 368, 2307 (1989)].
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.1141917
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 2
    Digitale Medien
    Digitale Medien
    Study of Y1Ba2Cu3O7−δ film growth on (200) oriented yttria stabilized zirconia buffer layer on metallic substrates (1994)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 65 (1994), S. 109-111 
    Details
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: This work presents the first report on the growth mechanism of 123 films on metallic substrates with (200) oriented and partially a-b plane oriented polycrystalline yttria stabilized zirconia (YSZ) buffer layer, with and without a metallic underlayer coating used between the substrate and the buffer layer. The microstructure and grain morphology of 9- and 160-nm-thick films of Y1Ba2Cu3O7−δ (YBCO) were studied by scanning electron microscopy, scanning tunneling microscopy, and x-ray diffraction. Our studies reveal that YBCO films on c-axis oriented and partial a-b plane oriented YSZ buffer layers on metallic substrates, initially grow two dimensionally, with the elongated grains of ∼100 nm length, mostly aligned along the 〈200〉 axis of the YSZ, owing to the strong atom-substrate bonding. The thicker films, however, show three-dimensional terraced island growth with several turns of the screws, with the screw edges still along the 〈200〉 axis of YSZ. These terraced islands seem to coalesce in the film with the highest Jc value, ∼1×105 A/cm2.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.113049
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 3
    Digitale Medien
    Digitale Medien
    Radiographic features of experimentalCandida arthritis in rats (1993)
    Springer
    Mycopathologia 121 (1993), S. 65-75 
    Details
    ISSN: 1573-0832
    Schlagwort(e): Bones ; Candida albicans ; Experimental arthritis ; Radiography ; Rats
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract Sprague-Dawley rats were inoculated intravenously (i.v.) withCandida albicans, and limb joints showing signs ofCandida-induced arthritis were subjected to radiographic and histologic examination. New bone formation and bone resorption were morbidly enhanced in bones sampled from the arthritic joints. Sparsely distributed needle-shaped calcified deposits began to be formed on bony surfaces in parallel with the onset of joint swelling. The calcified deposits gradually became denser and then covered the bony surfaces almost entirely, giving rise to an exostosis-like profile. In addition to the new bone formation, bone resorption was also observed in regions adjacent to the sites of new bone formation, and punched-out bone lesions were produced. Eventually, severe deformation of joint bones due to new bone formation and bone resorption was evident. Reflecting these unusual radiographic changes, abundant osteoblasts and osteoclasts were demonstrated histologically in the bones. On the basis of these results, possible mechanisms for the induction of arthritis byCandida infection are discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01103573
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 4
    Digitale Medien
    Digitale Medien
    Radioimmunoassay for the determination of glycated haemoglobin (1991)
    Springer
    Diabetologia 34 (1991), S. 40-45 
    Details
    ISSN: 1432-0428
    Schlagwort(e): Radioimmunoassay ; glycation ; HbA 1c glucose ; glucitollysine
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary A competitive radioimmunoassay for the quantitative determination of glycated haemoglobin was developed. The antiserum, obtained by immunizing guinea pigs with reduced glycated human albumin, was capable of identifying and quantitating the glucitollysine residues of glycated Hb after reduction with sodium borohydride. To simplify the sample preparation we introduced trichloroacetic acid precipitation to remove unreacted sodium borohydride instead of using dialysis or gel filtration. Using this procedure, our radioimmunoassay became relatively simple and provided satisfactory within- and between-run (1.3–2.8% and 1.9–5.4% coefficient of variation, respectively). The radioimmunoassay method was compared to the measurement of HbA 1c by high performance liquid chromatography which is the most widely used method for quantitating glycated Hb. For this purpose glycated Hb was measured in normal glucose tolerance, impaired glucose tolerance, and diabetes mellitus groups based on WHO criteria. Both assays were able to discriminate between the normal and diabetic groups. In addition, while the determination of glycated Hb by the radioimmunoassay method was able to clearly discriminate between the normal and impaired glucose tolerance groups, the determination of HbA 1c by the high performance liquid chromatography method failed to discriminate between these two groups. Moreover, 15 of the 20 impaired glucose tolerance patients exceeded the upper normal range (mean normal values + 2 SD) in radioimmunoassay. But all 20 patients with impaired glucose tolerance were within the upper normal range in HbA 1c values. These results demonstrate that the measurement of glycated Hb by radioimmunoassay is more sensitive than the measurement of HbA 1c by high performance liquid chromatography since it can discriminate between the normal and impaired glucose tolerance groups.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00404023
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 5
    Digitale Medien
    Digitale Medien
    A test of geometric hypotheses for soldier investment patterns in the gall producing tropical aphidCerataphis fransseni (Homoptera, Hormaphididae) (1994)
    Springer
    Insectes sociaux 41 (1994), S. 457-460 
    Details
    ISSN: 1420-9098
    Schlagwort(e): Aphid ; soldier investment ; gall ; tropics ; predation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary The gall-forming aphidCerataphis fransseni produces soldiers that defend against predators. Soldiers are produced soon after colony foundation and the number of soldiers increases nonlinearly during colony growth. The number of soldiers scales to the square-root of the number of non-soldiers and linearly to the surface area of the gall. This suggests that soldiers are produced to defend an area, for example the perimeter of the colony or the surface of the gall, rather than individual aphids.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01240648
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 6
    Digitale Medien
    Digitale Medien
    Facet formation sign in sarcoidosis: a new sign in endoscopic ultrasonography (1992)
    Springer
    European radiology 2 (1992), S. 526-531 
    Details
    ISSN: 1432-1084
    Schlagwort(e): Endoscopy ; Lymphatic system, ultrasound studies ; Lymphatic system, diseases ; Mediastinum, ultrasound studies ; Sarcoidosis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Endoscopic ultrasound was performed in 56 patients with histologically or clinically proven mediastinal or lung diseases. These 56 patients comprised 12 with sarcoidosis, 8 with lymphoma, 20 with lung cancer, 10 with oesophageal cancer, and 6 with other diseases. A 7.5 MHz electronic linear-arrayed ultrasonic endoscope was used. In 38 of the 56 patients lymph nodes were detected by endoscopic ultrasound. Eleven patients with sarcoidosis showed lymph nodes in a “facet formation” (like stones in an old stone wall), while lymph nodes in the other 27 patients were round in shape and did not form facets. The “facet formation sign”, evaluated by endoscopic ultrasound, may be a characteristic finding in sarcoidosis.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00187546
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 7
    Digitale Medien
    Digitale Medien
    Posterior cranial fossa dural arteriovenous malformation with a varix mimicking a thrombosed aneurysm: case report (1993)
    Springer
    Neuroradiology 35 (1993), S. 210-211 
    Details
    ISSN: 1432-1920
    Schlagwort(e): Dural arteriovenous malformation ; Posterior cranial fossa ; Varix ; Computed tomography ; Magnetic resonance imaging ; Thrombosed aneurysm
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Dural arteriovenous malformations (AVMs) in the posterior cranial fossa are relatively infrequent. Intradural haemorrhage is one of their specific complications. Angiographic demonstration of varices or aneurysmal structures is one of the hallmarks of severe cases. We report a patient with posterior cranial fossa dural AVM associated with a varix mimicking a thrombosed aneurysm on CT and MRI. Internal carotid and vertebral angiography failed to demonstrate an aneurysm, but external carotid injection revealed a dural AVM affecting the sigmoid sinus, and a varix. The AVM was completely eliminated by embolization. When a dural AVM is suspected clinically selctive angiography should be performed to confirm the diagnosis even when CT or MRI do not show dilated vessels.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00588496
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 8
    Digitale Medien
    Digitale Medien
    Acquired epidermoid tumour in the thoracic spinal canal (1993)
    Springer
    Neuroradiology 35 (1993), S. 316-318 
    Details
    ISSN: 1432-1920
    Schlagwort(e): Epidermoid tumour ; Iatrogenic lesion ; Thoracic spine ; Magnetic resonance imaging
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Acquired spinal epidermoid tumours are rare, and probably caused by skin fragments that have been transplanted by trauma or lumbar puncture. They almost always occur in the region of the cauda equina. We present an acquired spinal epidermoid tumour at the T 10 level, with pathological confirmation. A skin fragment had migrated to a site where it developed into a tumour.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00602624
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 9
    Digitale Medien
    Digitale Medien
    Elastic-plastic crack growth on plane strain bimaterial interface (1992)
    Springer
    Acta mechanica Sinica 8 (1992), S. 261-270 
    Details
    ISSN: 1614-3116
    Schlagwort(e): interface crack growth ; plane strain ; modified Gurson's model
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau , Physik
    Notizen: Abstract Finite element computation are carried out to simulate plane strain crack growth on a bimaterial interface under the assumption of small scale yielding. The modified Gurson constitutive equation and the element vanish technique introduced by Tvergaard et al. are used to model the final formation of an open crack. It is found from the calculation that the critical fracture toughness for crack growth is much lower in bimaterials than that in homogeneous material. The critical fracture toughness is strongly dependent on material properties of the bimaterial pair and the mixed mode of remote loads. The interface crack grows in the more compliant (lower hardening) material or in the weaker (lower yield strength) material. In Mode-I loading, the crack grows zigzag along the interface.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02489250
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 10
    Digitale Medien
    Digitale Medien
    Phase diagram and phase structure of the barium ethyl(octyl) phosphate-water system.1H pulsed-gradient NMR self-diffusion studies (1991)
    Springer
    Colloid & polymer science 269 (1991), S. 713-719 
    Details
    ISSN: 1435-1536
    Schlagwort(e): Phase structure ; self-diffusion ; ethyl (octyl) phosphate
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Maschinenbau
    Notizen: Abstract Barium ethyl(octyl)phosphate (EOP), ((C2H5O)(C8H17O)PO 2 − )2Ba2+, was synthesized and the phase diagram of the EOP-water system consisting of four regions (I, II, III, and IV) was determined. The phase structure was studied from the self-diffusion coefficients obtained by the1H pulsed-gradient NMR method. In region I, a critical micelle concentration (CMC) was found, indicating the presence of a monomer ⇆ micelle equilibrium. Region II is a two-phase area in which regions I and III coexist. For region III, the structure of the aggregate system was found to depend upon the concentration.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00657409
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...