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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Abdominal imaging 19 (1994), S. 165-167 
    ISSN: 1432-0509
    Keywords: Myelolipoma, adrenal gland ; MRI ; CT
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The computed tomographic (CT) and magnetic resonance imaging (MRI) features of three giant myelolipomas of the adrenal gland are presented in two patients. CT demonstrates large, fatty retroperitoneal tumors that may be confused with retroperitoneal liposarcoma or very large renal angiomyolipoma. MRI with coronal and sagittal imaging is more sensitive than CT in defining the most likely origin of these tumors as the adrenal gland.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 139 (1982), S. 101-105 
    ISSN: 1432-1076
    Keywords: Coeliac disease ; Cow's milk protein intolerance ; Immunofluorescent technique ; Intraepithelial lymphocytes ; Morphometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract One hundred and twenty-five small intestinal biopsies from children with coeliac disease (CD), cow's milk protein intolerance (CMPI) and controls were compared by morphometric analysis, by counting intraepithelial lymphocytes (IEL) and by quantitative evaluation of immunoglobulin-containing cells of lamina propria. The double-stain immunofluorescent technique of Brandtzaeg and Baklien [2] was used, based on defined mucosal tissue units. A patchy enteropathy was found in 60% of CMPI, and in 14% of nonspecific changes, but never in CD. There was a significant difference in crypt depth between CD (360±80 μm) and CMPI (217±92 μm), even when lesions of equal grade were compared (P〈0.015). IEL counts per 1000 epithelial cells showed even better discrimination between the groups (CD: 793±173, CMPI: 320±143, P〈0.001). In CD, there was a relatively greater increase of IgM-cells (x4.9) and of IgG-cells (x4.2) than of IgA-cells (x2.6). Ig-cell changes outlasted the morphological lesion in CD on a gluten-free diet. In CMPI, IgM-cells (x2.3), IgG-cells (x2.5), and IgA-cells (x1.7) were proportionately increased, compared to controls. A special increase of IgE-cells in CMPI could not be substantiated. By computerized stepwise discriminant analysis based upon crypt depth, villus/crypt-ratio, IEL-count, and counts of IgM-, IgG-, IgA-containing cells of lamina propria, accurate classification of patient groups was accomplished, even when only the initial biopsy data were analysed.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 139 (1982), S. 13-17 
    ISSN: 1432-1076
    Keywords: Coeliac disease ; Cow's milk protein intolerance ; Enteropathy ; Gliadin ; Immunofluorescence ; Immunoglobulin-containing cells ; Serum gliadin antibodies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract One hundred twenty-five small intestinal biopsies of coeliac children and controls were investigated prospectively for gliadin binding by specific immunofluorescent staining of lamina propria cells, using a TRITC rabbit IgG antigliadin-conjugate. In parallel, sera were investigated for serum gliadin antibodies by a red cell immunosorbent fluorescence test (RIFT). There was no epithelial or reticulin staining found with antigliadin. Exclusively in coeliac disease, i.e. in all active coeliacs, and in 71% of coeliacs on a gluten-free diet, gliadinand immunoglobulin-containing cells were detected. Among these, there was a relatively higher proportion of IgM- and IgG-containing cells, compared to IgA. They are possibly involved in a local B-cell reaction to gliadin. Their absolute numbers per mucosal tissue unit were small. There was no correlation found between serum gliadin antibody titres of different immunoglobulin classes, and the respective local gliadin- and immunoglobulin-containing cells. It is concluded that lamina propria cells are not a main source of serum gliadin antibodies. Pathogenetic and diagnostic consequences of these data await further clarification.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 79 (2001), S. 4124-4126 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Ultraviolet photoemission spectroscopy (UPS) was employed to investigate the electronic structure upon deposition of 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA) on differently treated n-GaAs(100) surfaces. Interface dipoles are found to form according to the electron affinities (EA) of the substrates and PTCDA films at the interfaces and, consequently, the vacuum level alignment rule does not hold. The results demonstrate that the energy offset between the conduction band minimum of n-doped inorganic semiconductors and the lowest unoccupied molecular orbital of organic molecular films at the interfaces can be obtained using UPS by systematically varying the EA of substrates with a known band gap. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 72 (1998), S. 1638-1640 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have developed GaSb/AlGaSb vertical-cavity surface-emitting lasers (VCSELs) by using solid source molecular beam epitaxy. The reflectivity spectra of the VCSELs show a very narrow (0.9 meV) cavity resonance at 1.5 μm. cw optical pumping results in lasing at the wavelength of the cavity resonance with a laser threshold density of 530 W/cm2 at 77 K. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Plant, cell & environment 27 (2004), S. 0 
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Knowledge about the induced pathogen resistance of plants is rapidly increasing, but little information exists on its dependence on abiotic growing conditions. Arabidopsis thaliana plants that had been cultivated under different nitrogen regimes were treated with BION®, a chemical resistance elicitor. The activities of three enzyme classes functionally involved in resistance (chitinase, chitosanase and peroxidase) were quantified over 8 d following treatment as resistance markers. Constitutive levels of three markers and the induced level of peroxidase and chitinase activity were significantly lower under limiting nitrogen supply. Under such conditions the increase of chitosanase activity after resistance induction was severely delayed, although the induced maximum activity of chitosanase was not significantly affected. Total soluble protein content decreased during the first 12 h after resistance elicitation. Thereafter, the induced plants cultivated under high N conditions reached higher protein contents than controls, whereas N-limited induced plants continuously had reduced protein contents. A plant's investment in resistance-related compounds can be severely constrained under limiting nitrogen supply.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Plant, cell & environment 28 (2005), S. 0 
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Fitness costs of resistance are among the most widely discussed explanations for the evolution of induced resistance, but studies on induced resistance to pathogens are scarce and contradictory. In the present study the influence of nitrogen supply, length of the growing period and competition on the seed production of Arabidopsis in response to treatment with the chemical resistance elicitor BION® was investigated. BION® treatment elicited resistance to the bacterial pathogen Pseudomonas syringae, and biochemical changes after BION® treatment were similar to those observed after bacterial infection. Induced plants grew more slowly during the first week after resistance induction, for which they then compensated by exhibiting faster growth than controls. Whether or not induced plants produced less seeds than controls depended on growing conditions. Costs, no costs and even higher seed production by induced plants were observed in experiments differently combining abiotic conditions. A higher seed production by induced plants arose particularly when the vegetation period was short, most probably a consequence of senescence-related processes that had been activated by resistance elicitation. Induced plants, however, produced less seeds when competing with controls and experiencing a full growing period. Studies controlling only some of the critical environmental factors can easily lead to apparently contradictory results, which in fact represent different outcomes of a complex interplay of factors.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Magnetic Resonance (1969) 71 (1987), S. 337-341 
    ISSN: 0022-2364
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Socio-Economic Planning Sciences 24 (1990), S. 125-141 
    ISSN: 0038-0121
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Sociology , Economics
    Type of Medium: Electronic Resource
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  • 10
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    Newberry, S.C. : Periodicals Archive Online (PAO)
    Studies in Short Fiction. 3:4 (1966:Summer) 446 
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