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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Analytical chemistry 26 (1954), S. 726-727 
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1420-9098
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Die Drohnenpopulation eines natürlichen Drohnensammelplatzes wurde zu 50% aus Drohnen vonApis mellifera ligustica (L) and zu 50% ausApis mellifera carnica (C) Drohnen zusammengesetzt. Durch kontinuierlich durchgeführte Drohnenfänge wurde die Relation beider Drohnenrassen überprüft. Es wurden signifikante Unterschiede in der Höhenverteilung der Drohnen gefunden: In 4 m Höhe war der relative Anteil der L-Drohnen größer als in 20 m und entsprechend waren die C-Drohnen in 20 m Höhe relativ häufiger als in 4 m. Jungfräulichen Königinnen (L und C) wurde der ungehinderte Hochzeitsflug auf dem Drohnensammelplatz gestattet. Die von diesen Königinnen produzierten Arbeiterinnen konnten als reine L-, reine C-Bienen oder als Hybriden bestimmt werden. Auf diese Weise waren Aussagen über die Paarungsfrequenz möglich. Sowohl die C- als auch die L-Königinnen hatten mehr rassereine Nachkommen als Hybriden. Daraus ergab sich für beide Rassen eine Bevorzugung von Paarungen innerhalb der Rasse. Eine rassespezifisch unterschiedliche Flughöhe beim Hochzeitsflug der Königinnen könnte zu diesen Paarungsergnis beigetragen haben.
    Notes: Summary The drone population at a natural drone congregation area (DCA) was composed of 50%Apis mellifera ligustica (L) and 50%Apis mellifera carnica (C) drones. Both kind of drones were monitored by frequent sampling. Significant differences in the vertical drone distribution were detected: at 4 meters the portion of L drones was larger and C drones were relatively more frequent in 20 meters. Virgin queens (L and C) were naturally mated in the DCA and mating frequencies for L and C drones were established. Their worker offspring was classified as pure Ls. pure Cs or hybrids. A significant tendency for assortative mating was found for both groups of queens. One of the mechanisms of mate choice may involve the differences in vertical distribution of the drones.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 39 (1977), S. 281-287 
    ISSN: 1432-0533
    Keywords: Neuroepithelial differentiation ; Microcomplement fixation ; Indirect immunofluorescence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Mouse neonatal brain cell fractions enriched for surface membranes were used as immunogens to produce a heterologous immune serum. Following absorption to remove non-neural anti-mouse activity, this serum demonstrated by microcomplement fixation an anti-brain activity that was completely removed by absorption with neonatal mouse brain or with solid tumors of the mouse transplantable teratoma OTT-6050. Indirect immunofluorescence applied to living monolayer cultures of differentiating teratoma embryoid bodies showed the absorbed serum's reaction with neural cell surfaces only. In material studied with frozen sections, the absorbed serum recognized antigenic sites in all examined areas of both neonatal and adult mouse brain, and only within neuroepithelial cell populations of solid transplants of the teratoma.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-1211
    Keywords: Key words NK cells ; T cells ; NKG7 ; GIG-1 ; GMP-17
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Intensive care medicine 23 (1997), S. 393-398 
    ISSN: 1432-1238
    Keywords: Key words Maxillary sinusitis ; Critical care ; Long-term care ; Intratracheal intubation ; Ultrasonography ; Endoscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objective: Evaluate A-mode ultrasonographic examination of maxillary sinus disease in mechanically ventilated, critically ill patients using sinoscopy as criterion standard. Design: Prospective case series. Setting: The intensive care units of a tertiary care hospital. Patients: 25 mechanically ventilated, critically ill patients with nasotracheal intubation or a tracheotomy were followed up by ultrasonographic examination of the maxillary sinuses in supine and semirecumbent positions. Infectious sinusitis was suspected in 15 patients, who were bilaterally sinoscoped combined with sampling for bacterial culture. Results: The frequency of oedema and/or secretions was high: 29 antra of 30 examined. Only 2 of 30 antra showed bacterial infection. Ultrasonographic examinations were sensitive to general pathological changes but less accurate in specific diagnostics such as the presence of secretions (sensitivity for fluid 75 %, oedema 81 %). The sensitivity of ultrasonographic diagnosis improved when the examination was made in the semirecumbent position (sensitivity for fluid 91 %, oedema 81 %). Conclusions: A-mode ultrasonography is a useful method for daily use, being easy to perform and without discomfort to the patient. It is fast and gives an immediate diagnosis. In intensive care unit patients, it should be the method of choice for day-to-day studies of effects and changes in the upper airways. For the differential diagnosis of oedema and/or secretions, it is not reliable enough to be used as the sole diagnostic method. A complementary investigation, such as computed tomography or sinoscopy, which also provides the opportunity to take samples, is needed for diagnostic confidence.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 157 (1998), S. 221-224 
    ISSN: 1432-1076
    Keywords: Key words Group B streptococci ; Maternal Antibodies ; Antibody decline ; ELISA
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Invasive group B streptococcal (GBS) infections are common in neonates but are rare after the 1st month of life. It is not known why GBS infections have this age distribution which differs from that of invasive infections caused by other encapsulated bacteria. The aim of this study was to test the possibility that serum antibodies against the GBS capsular polysaccharides (CPS) are acquired during the first months of life thereby preventing infections after the neonatal period. Cord sera were collected from 321 healthy term newborns. A second blood sample was collected at 2, 4, 8, 13 or 26 weeks of age. IgG CPS antibodies (measured by ELISA) against serotypes Ia, II and III were present in 98%–100% of all cord sera and decreased continuously during the first 6 months of life. No IgM antibodies against serotype III CPS were present in cord sera. Only 16%–17% of the children acquired IgM antibodies against serotype III CPS at 3 and 6 months of age. Conclusion Early acquisition of IgG or IgM antibodies against CPS of the most common GBS serotypes was not demonstrated and cannot explain the rare occurrence of invasive GBS infections in children after the 1st month of life.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 52-53 (Jan. 1991), p. 291-300 
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 185 (1960), S. 461-461 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] During the search for a new drug which would be at least as effective as quinuronium sulphate but without its toxic effects, a large number of compounds has been screened for activity against Babesia rodhaini in mice, and the most promising of these were tested against Babesia divergens in ...
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In the study of the structure-activity relationships among this series of compounds, many similar coupling reactions have been investigated. In an attempt to prepare the 2,7-di-m-amidinophenyl-diazoamino derivative (III) of homidium, the coupling reaction of 2 mol. of m-amidinobenzenediazonium ...
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The evolution of nitrogen which occurred when the red and purple compounds were heated with 6 N sulphuric acid was given as evidence for the presence of a diazoamino group in both compounds (Wragg et al.1), although it was pointed out by these workers that for unexplained reasons the purple isomer ...
    Type of Medium: Electronic Resource
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