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  • 11
    Electronic Resource
    Electronic Resource
    Chemielectron spectroscopy: study of the reaction of cerium with oxygen (1989)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 111 (1989), S. 5994-5999 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00198a003
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  • 12
    Electronic Resource
    Electronic Resource
    n-GaN surface treatments for metal contacts studied via x-ray photoemission spectroscopy (2002)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 80 (2002), S. 204-206 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The surface chemistry and electronic properties of n-GaN surfaces were studied via x-ray photoemission spectroscopy before and after wet chemical treatments. Shifts of the surface Fermi level were measured with the change in position of the Ga 3d core level peak. HCl treatment of n-GaN led to a 0.9 eV shift of the surface Fermi level toward the conduction band minimum, while KOH treatment led to a 0.3 eV shift of the surface Fermi level toward the valance band maximum. These shifts lead to a reduction in the surface barrier for HCl-treated n-GaN and for KOH-treated p-GaN, potentially improving contact resistance. The changes in surface chemistry indicate that a N (or Ga) deficiency with HCl(KOH) treatment alters the surface state density through the formation of donor (acceptor)-like states. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1430024
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  • 13
    Electronic Resource
    Electronic Resource
    Demonstration of near-field scanning photoreflectance spectroscopy (2000)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 77 (2000), S. 1943-1945 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A near-field scanning optical microscope (NSOM) was developed to perform photoreflectance (PR) spectroscopy experiments at high spatial resolution (∼1 μm). Representative PR spectra are shown, along with an image illustrating the capability of observing contrast in images due to the strength of a PR feature. It was found that sufficiently high intensity light from the NSOM tip can produce photovoltages large enough to limit the spatial resolution of the electric field determination by PR. The photovoltage effect is measured as a function of light intensity, and the results are discussed in terms of a simple photovoltage expression. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1312253
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  • 14
    Electronic Resource
    Electronic Resource
    Leucocytes and related cells in the plaice Pleuronectes platessa (1976)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 8 (1976), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The leucocytes and related cells of the blood of plaice were examined morphologically and their various functions assessed using a number of procedures to identify phagocytosis histochemical reactions and antibody responses. Four morphologically different types of thrombocytes were identified in addition to lymphocytes, plasma cells, monocytes, macrophages and one type of granulocyte which histochemically resembled the mammalian neutrophil. The evolution and development of the cells was also investigated and the various stages described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1976.tb03928.x
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  • 15
    Electronic Resource
    Electronic Resource
    Defence mechanisms in fish (1976)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 8 (1976), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The lympho-reticular tissues in the plaice were investigated for their phagocytic properties on colloidal carbon after its intraperitoneal injection. Fish were killed at intervals ranging from 10 min to 25 days after injection. Although peritoneal macrophages constituted a large population of phagocytic cells, most of the carbon apparently gained access to the circulation as free particles and phagocytosis was performed predominantly by the ellipsoids of the spleen, the network of reticulo-endothelial (RE) cells throughout the haemopoietic tissue of the kidney, and by the RE cells occupying intermuscular spaces in the atrium of the heart. The cardiac macrophages rapidly emigrated from the organ while the carbon containing macrophages in the kidney and spleen formed aggregates in the lymphoid areas, either within or outwith pre-existing aggregates of melano-macrophages.The possible significance of phagocyte aggregations, including melano-macrophages, in association with lymphoid elements in the kidney and spleen is discussed in the context of immune mechanisms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1976.tb03908.x
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  • 16
    Electronic Resource
    Electronic Resource
    Control of Coronary Blood Flow (1980)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Medicine 31 (1980), S. 489-508 
    Details
    ISSN: 0066-4219
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.me.31.020180.002421
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  • 17
    Electronic Resource
    Electronic Resource
    Chemical bonding and electronic properties of SeS2-treated GaAs(100) (1999)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 85 (1999), S. 969-977 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: SeS2-passivated n-type GaAs (100) surfaces, formed by treatment of GaAs in SeS2:CS2 solution at room temperature, were studied with high-resolution core-level photoemission spectroscopy excited with synchrotron radiation source. The SeS2-treated surface consists of a chemically stratified structure of several atomic layers thickness. Arsenic-based sulfides and selenides reside in the outermost surface layer while gallium-based selenides are adjacent to the bulk GaAs substrate. The shift of the surface Fermi level within the band gap was monitored during controlled thermal annealing, allowing for the identification of the specific chemical entities responsible for the reduction in surface band bending. Arsenic-based species are removed at low annealing temperature with little shift of the Fermi level. Gallium-based selenides are shown to be associated with the unpinning of the surface Fermi level. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.369217
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  • 18
    Electronic Resource
    Electronic Resource
    Abnormalities of differentiation and maturation in the oesophageal squamous epithelium of patients with tylosis: morphological features (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 19 (1991), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Tylosis is an autosomal dominant inherited defect of keratinization, associated in two Liverpool families with a high risk of eveloping oesophageal squamous carcinoma. In 29 individuals, followed by regular endoscopy and biopsy, we have noted several morphological abnormalities of the epithelium in this pre-cancerous condition. A control group of 43 non-tylotic patients with normal oesophageal histology and a further 26 patients with acute oesophagitis was used for comparison. Recognizable dysplasia was confined to the older age range in the tylotic group and was present in four patients. Almost half of the patients showed acute inflammation. Abnormalities of maturation were common, the most frequent being the presence of prominent basophilic inclusions and clear cell acanthosis, with parakeratosis and frank surface keratinization present in smaller numbers. There was, however, no statistically significant difference between the tylotic and inflamed control groups for any of these features. The only feature to show a significant difference between these groups was the presence of individual cell keratinization. The results suggest that in the oesophageal epithelium of the patients with tylosis, inflammation is the predominant abnormality, together with individual cell keratinization, and that these lesions appear in a much younger age group than dysplasia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2559.1991.tb00044.x
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  • 19
    Electronic Resource
    Electronic Resource
    On remembrance of the abdominal pores in rainbow trout, Salmo gairdneri Richardson, and some other salmonid spp. (1982)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 21 (1982), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Direct connections (abdominal pores) between the peritoneal cavity and the external environment of elasmobranch fishes and some teleost species including the Salmonidae were recognized almost 100 years ago but over this period their existence in these teleost species has been omitted from anatomical texts. In this report, the abdominal pores of rainbow trout, Salmo gairdneri, Atlantic salmon, Salmo salar, and the cisco, Coregonus artedii, were examined in relationship to ip injected particulate material. Both carbon particles and suspensions of the bacterial kidney disease organism were found to be extruded within masses of macrophages and as free particles through the abdominal pores in fish injected ip 72 h previously. The pores were patent in male and female, mature and immature fish. The role and significance of the abdominal pores in rainbow trout in the clearance from the body of material, including material likely to be used for vaccinating fish, is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1982.tb02868.x
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  • 20
    Electronic Resource
    Electronic Resource
    A morphological study of cells isolated from the perfused gill of dab and Atlantic salmon (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 53 (1998), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Single cell suspensions were derived from the gills of dab Limanda limanda and Atlantic salmon Salmo salar which were free from blood cell contamination. Gills were perfused with heparinized saline before the cells were liberated from their resident position using a procedure employing chelating agents and collagenase digestion. Cells were characterized using light and electron microscopy as well as histochemical staining. The results indicate that the cell types resident in the gill tissue should be capable of expressing local immune competence. Small and large lymphocytes, macrophages, neutrophils, eosinophilic granule cells, goblet cells, chloride cells and cells of unusual morphology were identified especially the presence of goblet cells apparently within epithelial-like cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1998.tb01001.x
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