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  • 1
    Electronic Resource
    Electronic Resource
    Very high speed GaInAs metal-semiconductor-metal photodiode incorporating an AlInAs/GaInAs graded superlattice (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 54 (1989), S. 16-17 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A lateral structure metal-semiconductor-metal photodiode has been fabricated on GaInAs, in which an AlInAs/GaInAs graded superlattice has been incorporated. This photodiode has exhibited a dark current lower than 100 nA, an internal quantum efficiency of greater than 80% at a wavelength of 1.3 μm, and a capacitance of 40 fF, all at the bias voltage of 10 V. The response speed of this photodiode has been characterized by electro-optic sampling to exhibit a full width at half maximum of 14.7 ps.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.100822
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  • 2
    Electronic Resource
    Electronic Resource
    Integrated waveguide/photodiodes using vertical impedance matching (1990)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 56 (1990), S. 1737-1739 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A novel "vertical impedance matching'' approach is demonstrated to improve absorption in evanescently coupled, integrated waveguide/photodiodes by 500% over conventional structures. Our devices exhibit both high absorption at short length (90% at 190 μm) and efficient fiber butt coupling (42%) at 1.3–1.55 μm wavelengths. Unusual transient phenomena are observed in such impedance-matched devices and discussed theoretically.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.103084
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  • 3
    Electronic Resource
    Electronic Resource
    Arsenic mediated reconstructions on cubic (001) GaN (1997)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 70 (1997), S. 1025-1027 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The 4×1 (respectively 1×1) (001) GaN surfaces obtained when molecular-beam-epitaxy (MBE) growth is carried out on (001) cubic SiC were exposed to an As background pressure in the MBE chamber: The reconstructions rapidly and irreversibly changed to 2×2 [respectively c(2×2)] as usually observed for GaN growth on (001) GaAs. The usual reversible 2×2/c(2×2) transitions were consequently observed when bringing the Ga flux up or down. The respective positions for the 4×1/1×1 and 2×2/c(2×2) transitions were worked out as a function of the growth parameters. These observations indicate that the 2×2 and c(2×2) GaN surface reconstructions are mediated by As atoms which we tentatively assign to a surfactant effect. A simple structural model involving As dimers is proposed that accounts for Ga coverages of 0.5 and 1 monolayer for the 2×2 and c(2×2) growth regimes, respectively. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.118433
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  • 4
    Electronic Resource
    Electronic Resource
    The Effects of Antioxidants on Browning and on Degradation Products Caused by Dehydroascorbic Acid (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 65 (2000), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The efficiency of L-cysteine (cysteine) and sodium sulfite as antioxidants was examined in the browning of an aqueous solution of 100 mM dehydroascorbic acid (DHA). The browning was suppressed at 100 mM cysteine and at 40 mM and higher concentrations of sodium sulfite, but it increased in the presence of 10 mM of those agents. These agents did not allow the reduction of DHA to L-ascorbic acid (AA). These results suggest that the suppression or acceleration of browning is likely to be related to some degraded intermediates of DHA. The two colorless intermediates, which during DHA breakdown eventually transform into browning pigments, were discussed with regard to the browning regulation mechanism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.2000.tb15949.x
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  • 5
    Electronic Resource
    Electronic Resource
    Ultrafast Time-Resolved Spontaneous and Coherent Raman Spectroscopy: The Structure and Dynamics of Photogenerated Transient Species (1994)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Physical Chemistry 45 (1994), S. 593-622 
    Details
    ISSN: 0066-426X
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.pc.45.100194.003113
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  • 6
    Electronic Resource
    Electronic Resource
    Electroorganic chemistry. XX. Anodic oxidation of carbamates (1975)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 97 (1975), S. 4264-4268 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00848a020
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  • 7
    Electronic Resource
    Electronic Resource
    Source mechanisms of volcanic tremor and low-frequency earthquakes associated with the 1988–89 eruptive activity of Mt Tokachi, Hokkaido, Japan (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 121 (1995), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: During the 1988–89 eruptive activity of Mt Tokachi, Hokkaido, Japan, volcanic tremor and many low-frequency earthquakes were observed by the National University Team at three stations close to the active crater. We calculated the spectral ratios of the tremor and the low-frequency events which were associated with the ash emission from the active crater, and showed that the ratios of both these events have similar features, indicating similar source mechanisms and focal depths. We further resolved the source mechanism and the focal depth of these events by fitting the theoretical spectral ratios to the observed ones, assuming three source models that are consistent with the eruptive activity. The single force model, which represents a counter force of eruption, can explain well both the observed spectral ratios and the distributions of ballistic rocks emitted from the active crater. On the other hand, though the solutions of the tensile crack model and the cylindrical model, which represent movements of a crack or a conduit due to the ash emissions, can explain the observed spectral ratios as well as the single force model, they cannot explain the surface configurations of the volcano and the direction of the ash emissions simultaneously. The focal depths were estimated at less than 0.5 km. As a result, we concluded that the tremor and the low-frequency events were excited by single force applied to the shallow part of the crater.We further calculated the spectral ratios of the explosion earthquakes observed at Mt Tokachi, and identified similarities of the source mechanisms to those of the tremor and the low-frequency events. This suggests that source mechanisms of volcanic earthquakes and tremors associated with eruptions (emissions of volcanic materials from craters) are similar while these events have different source time functions and magnitudes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1995.tb05725.x
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  • 8
    Electronic Resource
    Electronic Resource
    New polymorphisms of haematopoietic prostaglandin D synthase and human prostanoid DP receptor genes (2002)
    Oxford, UK : Blackwell Science, Ltd
    Clinical & experimental allergy 32 (2002), S. 0 
    Details
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background Prostaglandin D2 (PGD2), a major cyclo-oxygenase metabolite of arachidonic acid in mast cells, induces bronchoconstriction in the human lung. It has been reported that mice lacking PGD receptor fail to develop the bronchial hyper-responsiveness upon ovalbumin challenge, suggesting that PGD2 functions as a mediator of allergic asthma.Objective To determine if there are any mutations associated with the development of asthma in the haematopoietic prostaglandin D synthase (H-PGDS) gene and the human prostanoid DP receptor (PTGDR) gene.Methods and results We screened the 5′flanking and coding regions of the H-PGDS gene and the PTGDR gene by direct sequence. We identified one variant in intron 2 (IVS2 + 11 A 〉 C) and one variant in intron 3 (IVS3 + 13T 〉 C) of the H-PGDS gene, and two variants in the 5′flanking region of the PTGDR gene (−197T 〉 C and −2C 〉 T). The IVS3 + 13T 〉 C and −197T 〉 C variants were rare, appearing only once in 48 subjects. transmission disequilibrium test (TDT) analysis of 144 asthmatic families revealed that the IVS2 + 11 A allele of the H-PGDS gene was significantly transmitted preferentially to asthma-affected children (P = 0.0056), but no association was observed between −2C/T polymorphism of the PTGDR gene and asthma (P 〉 0.05).Conclusion Our results suggest that the IVS2 + 11 A/C allele may be involved in the development of asthma in the Japanese population.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.0022-0477.2001.01261.x
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  • 9
    Electronic Resource
    Electronic Resource
    Mutation screening of interferon regulatory factor 1 gene (IRF-1) as a candidate gene for atopy/asthma (2000)
    Oxford BSL : Blackwell Science Ltd
    Clinical & experimental allergy 30 (2000), S. 0 
    Details
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: IL-4 gene cluster on chromosome 5 contains several candidate genes for atopy and asthma. Several independent studies have shown evidence for linkage between the markers flanking IL-4 gene cluster and asthma and/or asthma-related traits. Interferon regulatory factor 1 (IRF-1) is located approximately 300 kb telomeric to IL-4 and recent study reveals that IRF-1 deficiency results in an elevated production of Th2-related cytokines and a compensatory decrease in the expression of native cell- and Th1-related cytokines.〈section xml:id="abs1-2"〉〈title type="main"〉ObjectiveTo determine if there are any mutations associated with the development of atopy and asthma present in the coding exons and 5′ flanking region of the IRF-1 gene.〈section xml:id="abs1-3"〉〈title type="main"〉Methods and resultsWe have screened the promoter and coding regions of the IRF-1 gene in atopic asthmatics and controls by SSCP method. We found three novel nuclear variants (the −300G/T and 4396 A/G polymorphisms and the 6355G 〉 A rare variant) in the IRF-1 gene. No variants causing amino acid alterations of IRF-1 were detected. The −300G/T polymorphism was in nearly complete linkage disequilibrium with the 4396 A/G polymorphism. An association between the 4396 A 〉 G polymorphism and atopy/asthma was examined by transmission disequilibrium test in 81 asthmatic families. Either of 4396 A or 4396G alleles was not significantly preferentially transmitted to atopy- or asthma-affected children.〈section xml:id="abs1-4"〉〈title type="main"〉ConclusionThe IRF-1 gene is less likely to play a substantial role in the development of atopy and asthma in the Japanese population.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2222.2000.00916.x
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  • 10
    Electronic Resource
    Electronic Resource
    Properties of the water dissolved membrane proteins of human erythrocytes
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Biomembranes 233 (1971), S. 320-333 
    Details
    ISSN: 0005-2736
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0005-2736(71)90330-0
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