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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Nuclear Physics, Section A 489 (1988), S. 751-762 
    ISSN: 0375-9474
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 70 (2000), S. 15-21 
    ISSN: 1432-0649
    Keywords: PACS: 42.65; 42.70
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. A two-stage infrared up-convertor made of AgGaSe2 and β-BBO crystals has been built up, that can up-convert the mid-infrared radiation of 11–16 μm into the 0.8-μm range where the sensitive photomultiplier can be used. This up-convertor is pumped with a near-infrared radiation of 1.7–1.8 μm wavelength range generated by a β-BBO optical parametric oscillator. In this experiment, we also measured the o-ray refractive index of AgGaSe2 in the 11–16 μm mid-infrared range and extended the fitting range of the Sellmeier equation to the 16-μm wavelength range.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 65 (1987), S. 347-351 
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract 12 MeV electron beams with different doses of 4, 8, 16 and 32 Mrad from LINAC designed by Nanjing University have been used to irradiate polypropylene films and their structures studied by X-ray diffraction afterwards. We have found that the electron irradiation does not change the total crystallinity of polypropylene but greatly inflences its crystal structure with increase of β phase and decrease of α phase as irradiation dose increases (within 16 Mrad). However, it is unexpected that the structure of irradiated sample with 32 Mrad are similar to that of the control sample. This behavior has also been observed in positron annihilation lifetime measurements.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    ISSN: 1434-4726
    Keywords: Autonomic innervation ; Nasal mucosa ; Axonal transport ; True blue
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In this study we employed retrograde axonal transport of (E)-2,2′-vinylendi-benzofuran-5-carboxamidin-diaceturate or true blue (TB) to study the peripheral autonomic innervation of the canine nasal mucosa. After injection of TB into the nasal mucosa, labeled neurons were found in the ipsilateral sphenopalatine ganglion (SPG) and the superior cervical ganglion (SCG). There were no labeled neurons in the middle cervical or stellate ganglia. This indicated that the origin of the postganglionic sympathetic fibers of the nasal mucosa was only from the ipsilateral SCG. When TB was injected into the nasal mucosa of dogs following a caudal or ethmoidal neurectomy, labeled neurons could still be found in the SPG and SCG. When TB was injected into the nasal mucosa of dogs following ethmoidal and vidian neurectomies or with maxillary neurectomy added, some labeled neurons could still be found in both the ipsilateral SPG and SCG. These results support the concept that another pathway — perhaps perivascular — exists for postganglionic sympathetic fibers other than the vidian and ethmoidal nerves. Labeled neurons were still observed in SPG when TB was applied to the canine nasal mucosa following neurectomy of either the ethmoidal or the caudal nasal nerve. However, retrograde labeled neurons could not be found in SPG following simultaneous neurectomies of the ethmoidal and caudal nasal nerves. These results show that the postganglionic parasympathetic fibers originating in the SPG travel along the ethmoidal and caudal nasal nerves.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    ISSN: 1434-4726
    Keywords: Noradrenergic innervation ; Human palatine tonsils ; Tonsillitis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The glyoxylic catecholaminergic histofluorescence method was employed on human palatine tonsil specimens in order to study the sympathetic innervation present. One percent neutral red was used as a counterstain. Abundant sympathetic fibers were demonstrable around the blood vessels of the medulla and capsule. However, few sympathetic fibers were found around the vessels of the subepithelial connective tissue and interfollicular septa. In the areas of the follicle and extrafollicle where B and T lymphocytes were located, sympathetic fibers were not found. These findings indicate that if sympathetic innervation can affect T and B cells, it will do so indirectly. Results also show that there is a higher norepinephrine content in focally infected tonsils that is not due to hyperactivity of the sympathetic nerve, but may be due to other mechanisms. Finally surgical dissection at the capsule during tonsillectomy will reduce bleeding, perhaps because vessels there have an abundant sympathetic innervation that leads to good vessel contraction.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    ISSN: 1434-4726
    Keywords: Key words Rhinitis ; Tissue nitric oxide ; Peroxynitrite metabolism ; Inducible nitric oxide synthase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Since nitric oxide (NO) can be involved in multiple physiological and pathological functions, we evaluated its possible involvement and that of peroxynitrite in the pathogenesis of rhinitis. Inferior nasal turbinates were obtained from allergic rhinitis and nonallergic rhinitis patients during corrective nasal surgery. The expressions of the inducible form of nitric oxide synthase (iNOS) and the production of peroxynitrite and its metabolite 3-nitrotyrosine were examined by immunohistochemistry in consecutive tissue sections. Each section (or tissue compartment) was given a score of 0–4 according to the labeling intensity seen, with the highest number representing the highest labeling intensity. The results showed that iNOS expression was present mainly in the mucosal epithelium, vascular endothelium, and submucosal glands. A significant difference was only observed in the labeling scores of glandular tissues of the allergic group, which had a higher iNOS labeling score. We also found that sections with a higher iNOS level did not necessarily exhibit a higher 3-nitrotyrosine labeling intensity. These data suggest that iNOS-derived NO may have a role in the pathophysiology of rhinitis, especially the glandular function of allergic nasal mucosa. Moreover, our findings suggest that the production of peroxynitrite in rhinitis patients is not dependent on the level of iNOS alone.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    ISSN: 1434-4726
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    ISSN: 1434-4726
    Keywords: Key words Uvula ; Minor salivary gland ; Noradrenergic ; innervation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    ISSN: 1434-4726
    Keywords: Juvenile nasopharyngeal angiofibroma ; Sympathetic nerves ; Noradrenergic fibers ; Catecholaminergic histofluorescence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The glyoxylic catecholaminergic histofluorescence method was employed on tissues from five cases of juvenile nasopharyngeal angiofibroma in order to study the sympathetic innervation present. There was no sympathetic innervation identified in tumor parenchyma while some scant noradrenergic fibers were found in the tumor border. These findings indicate that keeping a dissection surface out of tumor during planned excisions may be very important, as vessels there have more sympathetic innervation which will then result in good vessel contraction in controlling bleeding. Non-diseased nasal mucosa from each patient was used as control tissue, with its submucosa seen to be filled with noradrenergic innervation. Some noradrenergic fibers were also found to innervate the muscle layers of arterioles or venules adjacent to the sphenopalatine foramen.
    Type of Medium: Electronic Resource
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