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  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 3354-3356 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: By impinging a beam of O+2 ions of energy 150 eV〈E〈1 keV on a Si(100) surface, we produced oxide films of varying thickness at room temperature. We find that the Si—O bond features of the films are quite similar to those of a thermally prepared vitreous SiO2 glass. We further observe that an intermediate range order in the form of n-member ring clusters with n=4 and n=6 exists in the resulting films.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A simple three-dimensional vapor phase model is used to interpret and clarify the selective area growth process. The model predicts both normal and anomalous profiles of thickness and composition, including long range effects. These are verified by an extensive set of experiments. © 1999 American Institute of Physics.
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  • 3
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 5236-5238 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The effects of heating rate and surface oxidation on magnetic induction of thin-gauged 3% Si–Fe strips have been investigated. Magnetic induction increased with increasing final annealing temperature. Before and after 1150 °C, the planar orientation of grains shifted from (100)[011] to (110)[001], resulting in magnetic induction higher than 1.90 T. Magnetic induction after final annealing was higher in case of a faster heating rate. This is because enough time for growth of (110) grains is given in the case. Irrespective of transient annealing temperature, magnetic induction after final annealing was mostly higher than 1.90 T. A maximum, 1.97 T, was obtained at a transient annealing temperature of 800 °C. This is because iron oxide formed at 800 °C inhibited the surface-energy-induced selective growth of (100)[011] grains during heating up to 1200 °C. © 2000 American Institute of Physics.
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  • 4
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Macromolecules 25 (1992), S. 5002-5007 
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Scandinavian journal of immunology 45 (1997), S. 0 
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Entamoeba histolytica can cause invasive disease by disruption of the intestinal barriers and subsequent lysis of the intestinal cells. Adherence to and contact dependent killing of host cells requires the galactose inhibitable lectin. To elucidate the mechanism whereby E. histolytica influences host defence, the authors assessed the change of proinflammatory cytokine genes expressed by colon epithelial cells in response to co-culture with E. histolytica trophozoites and carbohydrates, including galactose, N-acetyl-galactosamine or N-acetyl-lactosamine, which prevented E. histolytica from attaching to epithelial cells. After HT-29 human colon epithelial cells were co-cultured with E. histolytica trophozoites in the presence or absence of carbohydrates (0.1–100 mm), RNA was extracted from the epithelial cells by an acid guanidinium thiocyanate–phenol–chloroform method. Cytokine gene expression was assessed by quantitative RT-PCR using a synthetic internal standard, and proteins were determined by ELISA. IL-8 mRNA expressed by HT-29 cells in response to E. histolytica trophozoites was downregulated in the presence of galactose, N-acetyl-galactosamine or N-acetyl-lactosamine (0.1–100 mm), and this was paralleled by decreased IL-8 protein secretion. GM-CSF and IL-1α/β mRNAs were also downregulated in those cells in the presence of these agents. These results suggest that the expression of proinflammatory cytokine genes could be inhibited by preventing E. histolytica from attaching to the host's colon epithelial cells.
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 40 (1975), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Polymer bulletin 38 (1997), S. 169-176 
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. An alternating copolymer composed of 9,9′-dihexylfluorene and N-2-ethylhexyl carbazole was synthesized to use as an emissive polymer in a light-emitting diode (LED). The copolymer is soluble in organic solvents and spin-cast to make a fine film. An LED fabricated by sandwiching the alternating copolymer between indium-tin oxide and aluminum emits a white color with the full width at half maximum of 150 nm. The electroluminescence spectrum becomes simplified to have an emission peak at 460 nm for fine blue color when the copolymer is blended with poly(vinylcarbazole) with a ratio of 1 to 4 before the use as an emissive layer. The forward bias turn-on voltage for the LED is 13, and quantum efficiency is 0.002%.
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Polymer bulletin 36 (1996), S. 391-398 
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary We have synthesized a polyacetylene derivative, poly(dipropargyl-16-crown-5), through the cyclopolymerization of the corresponding monomer by metathesis catalysts. The polymer containing crown-ether units was characterized by spectroscopic and thermal techniques. The polymer structure is believed to be a cyclized from with both five- and sixmembered rings. The polymer exhibits high cation-binding properties and ionochromic effects. The order of the selectivity of alkali- metal cations for both the monomer and the polymer was found to be Na+〉K+〉Li+ and the polymer shows the largest red shift by approximately 40 nm in λmax for Na+.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    International journal of colorectal disease 10 (1995), S. 156-160 
    ISSN: 1432-1262
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé 11 patients adultes porteurs d'une maladie de Hirschsprung ont été traités à l'Hôpital Universitaire National de Séoul (8 cas) et à l'Hôpital Universitaire de Chosun (3 cas) entre 1985 et 1992. Des 11 patients 7 étaient des sujets mâles. L'âge des patients variait de 11 à 30 ans et tous se présentaient avec une constipation chronique et des sujets mâles. L'âge des patients variait de 11 à 30 ans et tous se présentaient avec une constipation chronique et des impactions fécales récidivantes nécessitant des lavaments périodiques et la prise de laxatifs. L'opération de Duhamel en un temps ou en plusiers temps opératoires a été réalisée chez tous les patients. Le niveau du segment aganglionnaire était limité au rectosigmoïde chez 9 patients (82%). 3 complications postopératoires majeures sont à déplorer. 2 patients ont développé une fistule anale au niveau de la zone anastomotique et un patient a développé un iléus postopératoire. Ces complications toutefois se sont résolues par un traitement conservateur. Les résultats à long terme étaient excellents à l'exception d'un patient qui a développé une impuissance. La fréquence moyenne des exonérations était habituellement de une à deux exonérations quotidiennes sans recours à un traitement complémentaire autre. Nos résultats indiquent que l'opération de Duhamel est une intervention très satisfaisante dans le traitement dela maladie de Hirschsprung de l'adulte.
    Notes: Abstract Eleven patients with adult Hirschsprung's disease were treated at Seoul National University Hospital (SNUH, 8 cases) and Chosun University Hospital (CUH, 3 cases) between 1985 and 1992. Of the 11 patients, seven were male. The age of the patients ranged from 11 to 30 years, and all presented with chronic constipation and recurrent faecal impactions that required periodic enemas and laxatives. The Duhamel's operation, as a single or staged procedure, was performed in all patients. Levels of aganglionosis in 9 patients were confined to the rectosigmoid colon (82%). There were three major post-operative complications. Two patients developed fistula-in-ano at the anastomotic site, and one patient developed ileus. However, these complications resolved with conservative management. The longterm results were excellent except for one patient who developed impotence. The mean frequency of bowel movements was usually once or twice a day without the aid of other treatments. Our results indicate that Duhamel's operation is a highly acceptable procedure in the management of adult Hirschsprung's disease.
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  • 10
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Six hundred and twenty-five sets of supine and erect abdominal radiographs of 288 patients with the confirmed diagnosis of intussusception (315 episodes) and 310 patients without intussusception were reviewed retrospectively to determine the characteristic radiographic features of intussusception. Among the patients with intussusception, 155 episodes (49%) showed a soft tissue mass and nearly half of these (71) showed characteristic radiolucencies (target, crescentic, or amorphous) in the soft tissue mass. Thirty-five episodes showed the radiolucencies on both the supine and erect radiographs; in 16 cases the type of radiolucency differed on the two films. In patients without intussusception, abnormal radiolucencies were seen in only seven cases (2.3%). Computed tomography performed prospectively in five patients showed the radiolucencies in the soft tissue mass to be intussuscepted mesenteric fat. We conclude that abnormal radiolucencies in the soft tissue mass on plain radiographs are characteristic of intussusception.
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