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  • 1
    Electronic Resource
    Electronic Resource
    Low-threshold operation of hemispherical microcavity single-quantum-well lasers at 4 K (1993)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 62 (1993), S. 443-445 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We demonstrate low-threshold lasing at 4 K in optically pumped hemispherical In0.2Ga0.8As single-quantum-well microcavities. The incident threshold pump power density is 11 kW/cm2 corresponding to an absorbed power density of about 320 W/cm2, and the measured spontaneous emission factor β is about 0.01.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.108928
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  • 2
    Electronic Resource
    Electronic Resource
    Lack of correlation between NADPH-oxidase priming and elevated alkaline phosphatase activity in cord blood neutrophils (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Pediatric allergy and immunology 6 (1995), S. 0 
    Details
    ISSN: 1399-3038
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Human neutrophils were isolated from cord blood drawn after Caesarean section deliveries without labour and from peripheral blood from healthy adults. The alkaline phosphatase (ALP) activity in the cell populations was compared with the release of respiratory burst products after activation with the chemoattractant n-formyl-methionyl-leucyl-phenylalanine (fMLP). In contrast to cord blood neutrophils obtained from babies after normal vaginal deliveries, the Caesarean section neutrophils were not metabolically primed. However, like the neutrophils from vaginally delivered babies, the Caesarean section neutrophils showed an increased ALP activity compared to adult control neutrophils. These findings indicate that priming of cord blood neutrophils appears to be induced by labour and can be dissociated from increased ALP activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3038.1995.tb00276.x
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  • 3
    Electronic Resource
    Electronic Resource
    Human hair is a potential source of cat allergen contamination of ambient air (2005)
    Oxford, UK : Munksgaard International Publishers
    Allergy 60 (2005), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background:  We have previously shown that airborne cat allergen levels are significantly lower in school classes using special school clothing or in classes with no pet owners. However, cat allergen is present and the levels are in fact two- to threefold higher on cat owners’ than noncat owners’ school clothing which is used, washed and stored at school only. This suggests that allergen is transferred to schools by routes other than clothing.Aim:  To analyse levels of cat allergen (Fel d 1) in hair from cat owners and noncat owners among children and adults.Methods:  Samples of unwashed hair (≥1 day prior to sampling) from adults and children with (n = 22) or without (n = 22) cats at home were collected at a hairdresser. In addition, samples of newly washed hair (adults only, n = 11) were collected. The hair sample was extracted and analysed for Fel d 1 content with ELISA.Results:  The geometric mean levels were more than two orders of magnitude higher in unwashed hair from cat owners, compared with noncat owners (P 〈 0.0001) and more than 10-fold higher in newly washed hair from adults. The allergen contamination of unwashed hair among noncat owners appeared higher in children than in adults (P = 0.045).Conclusions:  Hair may be an important source for transfer and deposition of cat allergen in schools and may explain why cat allergen is found in environments with strict allergen avoidance measures. Although it may be unrealistic to apply allergen avoidance strategies against this allergen source, it is important to be aware of it.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.2005.00796.x
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  • 4
    Electronic Resource
    Electronic Resource
    Phagocytosis following Translocation of the Neutrophil b-Cytochrome from the Specific Granule to the Plasma Membrane is Associated with an Increased Leakage of Reactive Oxygen Species (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of immunology 36 (1992), S. 0 
    Details
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The effect of neutrophil b-cytochrome translocation on the respiratory burst activation generated during phagocytosis of yeast particles was investigated. Secretion of neutrophil specific granules was induced by the calcium ionophore ionomycin prior to phagocytosis. The secretory process is associated with a translocation from the specific granules to the plasma membrane of the respiratory burst b-cytochrome. Respiratory burst activity was measured as release of hydrogen peroxide in the absence of azide (extracellular leakage) and in the presence of azide (total produclion). The subcellular localization of the b-cytochrome was found to affect the extracellular release of hydrogen peroxide in that a plasma membrane localization was associated with a significantly increased release during phagocytosis. It should be pointed out, however, that most of the hydrogen peroxide, both in control and in ionomycin-treated cells, is produced intracellularly, probably in the phagosomes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3083.1992.tb03151.x
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  • 5
    Electronic Resource
    Electronic Resource
    Urine interleukin-6 and interleukin-8 in children with acute pyelonephritis, in relation to DMSA scintigraphy in the acute phase and at 1-year follow-up (1994)
    Springer
    Pediatric radiology 24 (1994), S. 513-515 
    Details
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The relationship between urine interleukin-6 (IL-6) and interleukin-8 (IL-8)/creatinine quotients and99mTc-dimercaptosuccinic acid (DMSA) scintigraphy, performed within 10 days of acute first-time pyelonephritis and after 1 year, was studied in 41 children. The urine IL-6 and IL-8/creatinine quotients were also related to the urineN-acetyl-β-D-glucosaminidase (NAG) and albumin/creatinine quotients. Presence of DMSA uptake defects, reflecting local inflammation, in children in the acute phase of pyelonephritis, were associated with elevated urine IL-6/creatinine quotients (median 27 pg/μmol); in children without DMSA changes there was no increase in quotients (median non-detectable) (P〈0.05). Persistent DMSA changes at the 1-year follow-up, probably reflecting renal scarring, were only seen in children with increased urine IL-6/creatinine quotients in the acute phase (P〈0.01). No correlation was found between urine IL-8 and DMSA uptake defects. Vesicoureteral reflux (VUR) at 6–8 weeks did not correlate with the urine cytokine levels in the acute phase. The urine excretion of NAG and albumin, reflecting renal dysfunction, was associated with values of both urine IL-6 and IL-8/creatinine quotients, but not with DMSA defects or VUR. Thus, the initial urine IL-6/creatinine quotients might be used as an indicator of risk for persistent renal damage in acute pyelonephritis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02015016
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  • 6
    Electronic Resource
    Electronic Resource
    On-Plant Test of TÜV HCM12 and ASME T23 Alloys for Use as Water Wall Materials (1999)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 171-174 (Oct. 1999), p. 169-178 
    Details
    ISSN: 1013-9826
    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
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/45/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.171-174.169.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    Estramustine-binding protein in meningioma (1999)
    Springer
    Acta neuropathologica 98 (1999), S. 135-140 
    Details
    ISSN: 1432-0533
    Keywords: Key words Prostatic binding protein ; Brain tumor ; Chemotherapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The presence of estramustine-binding protein has been suggested to positively correlate with the effect of the cytotoxic drug estramustine, a combination of estradiol and nornitrogen mustard used in the treatment of prostatic carcinoma. This study demonstrates expression of estramustine-binding protein in a series of meningioma using different ligand-based and immunological techniques. Scatchard plot analysis showed specific binding sites for [3H]estramustine in meningioma tissue with a dissociation constant of 22–26 nM. Immunohistochemistry revealed an immunoreactivity in meningioma comparable to that demonstrated in prostatic carcinoma. The mean concentration (n = 6) of estramustine-binding protein in meningioma, as determined by radioimmunoassay was 159 ng/g tissue (range 18–274 ng/g). Moreover, partial characterization using size exclusion chromatography of [3H]estramustine-labeled tumor extracts and Western blot analysis of immunoprecipitated samples indicated that the structure of the estramustine-binding protein in meningioma is similar to that in rat prostate, with three polypeptide components of 10, 14, and 16 kDa, as compared to 8, 10–11, and 12 kDa in rat prostate. In conclusion, the novel observation of estramustine-binding protein and specific binding of estramustine in meningioma justify further evaluation regarding the role of estramustine-binding protein in the growth behavior of meningioma and the potential for estramustine and similar hormone-related drugs in the treatment of relapsing meningioma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004010051061
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  • 8
    Electronic Resource
    Electronic Resource
    A New Bone Dust Packer for Use in Neurosurgery (1999)
    Springer
    Acta neurochirurgica 141 (1999), S. 183-185 
    Details
    ISSN: 0942-0940
    Keywords: Keywords: Bonedust; craniotomy; burrhole; skindent.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary  A new tool for the packing of bone dust has been developed. The instrument compresses a mixture of bone dust and saline into suitable cylindrical plugs, fitting neatly into craniotomy burrholes. The skullbone at the craniotomy area will heal neatly also assuring the best healing possibilities for the overlying skin. The cosmetic results are excellent as no skin dents or cavities will be formed over the burrholes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s007010050284
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  • 9
    Electronic Resource
    Electronic Resource
    Increased frequency of micronuclei in lymphocytes of Swedish chimney sweeps (1994)
    Springer
    International archives of occupational and environmental health 66 (1994), S. 185-187 
    Details
    ISSN: 1432-1246
    Keywords: Micronucleus test ; Lymphocyte subsets ; Chimney sweeps ; Asbestos ; Benzo[a]pyrene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Forty-five Swedish chimney sweeps and 49 controls were investigated with micronuclei stimulated by phytohemagglutinin and pokeweed mitogen and by analysis of lymphocyte subgroups and neutrophilic leukocytes. There was a statistically significant effect among sweeps with respect to both micronuclei variables and neutrophilic leukocytes. The effect on lymphocyte micronuclei was most prominent in pokeweed mitogen-stimulated cells, which may imply that the T4 lymphocytes were preferentially damaged by the occupational exposure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00380778
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  • 10
    Electronic Resource
    Electronic Resource
    Magnetic-field-induced semiconductor-semimetal transition in Bi-Sb alloys (1970)
    Springer
    Journal of low temperature physics 3 (1970), S. 147-174 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Accurate and detailed measurements of the temperature dependence of the longitudinal magnetoresistance of single-crystal Bi-Sb alloys have been made, with static magnetic fields in the range 0–100 kG oriented parallel to the trigonal axis. Alloy concentrations were in the range 8–12 at.% Sb, and temperatures in the range 1–35 K. At very high fields the resistance increases with increasing temperature in a metallic manner with “ideal” and “residual” components, in contrast to the semiconductor behavior observed at zero field or low fields. For the high-field semimetal regime the electrical resistance behaves in a simple manner similar to a metal in zero field, in contrast to the complicated magnetoresistance phenomena for metals in low fields. This behavior can be understood in terms of a simple quasi-one-dimensional extreme-quantum-limit regime. The magnetic-field-induced semiconductor-semimetal transition is associated with an energy gap and changes of the energy-band structure which are of order 1 meV. Thermal activation energies for electrical conduction manifest this gap only at temperatures below approximately 20 K. Activation energies an order of magnitude larger which have been measured at considerably higher temperatures are apparently the direct gap at theL-point in the Brillouin zone and are not directly connected with the semiconductor-semimetal transition. Our results indicate that the zero-field indirectL-T energy gap increases from zero somewhere near 7–8 at. % Sb to values only as large as approximately 1.5 meV at 12 at. % Sb. At the magnetic-field induced transition there occurs evidence of an intermediate “excitonic insulator” phase, a resistance minimum below 10 K reminiscent of the Kondo alloy behavior. This anomalous regime is a property of the semiconductor-to-semimetal transition and cannot be associated with the well-known temperature and magnetic-field “freeze-out” of charge carriers in extrinsic semiconductors, or with magnetic ordering of the Kondo type.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00628324
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