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  • 1
    Electronic Resource
    Electronic Resource
    SURF II: Characteristics, facilities, and plans : Proceedings of the 4th international conference on synchrotron radiation instrumentation (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 1594-1595 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: This facility report describes the Synchrotron Ultraviolet Radiation Facility (SURF II) operated by the National Institute of Standards and Technology, Gaithersburg, Maryland. SURF II is a 300-MeV electron storage ring which provides well characterized continuum radiation from the far infrared to the soft x-ray region with the critical wavelength at 17.4 nm. Brief descriptions are given of the user facilities, the characteristics of the synchrotron radiation, the main storage ring, the injector system and each of the operating beam lines, and associated instruments. Further description is given of expansion plans for additional beam lines.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1142986
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  • 2
    Electronic Resource
    Electronic Resource
    Plans for conversion of SURF II to SURF III : The 9th National conference on synchrotron radiation instrumentation (1996)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 67 (1996), S. 3345-3346 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The Synchrotron Ultraviolet Radiation Facility (SURF II) at the National Institute of Standards and Technology, Gaithersburg, MD, USA, has served as a primary radiometric standard in the vacuum ultraviolet region since its conversion from a synchrotron to an electron storage ring in 1974. The magnet iron, however, dates back to an original betatron design of the late 1940s. The advent of both modern materials and methods of finite element analysis have made possible the design of magnets offering far greater dc performance than the existing SURF system. In this paper we discuss the general design and plans to convert SURF II to SURF III, which will offer reduced radiometric uncertainty, an increase in energy from 300 MeV to 385 MeV, a modernized control system, and two new beamlines, which are not presently possible. Anticipated new beamline activities include a substantial new effort devoted to radiometric improvements from IR to far UV and development of stations for microspectoscopy and electroreflectance. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1147454
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  • 3
    Electronic Resource
    Electronic Resource
    Back-gated split-gate transistor: A one-dimensional ballistic channel with variable Fermi energy (1992)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 60 (1992), S. 2782-2784 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have studied the quantized conductance of a one-dimensional ballistic channel in the two-dimensional electron gas of a back-gated GaAs/AlGaAs heterostructure. A standard Schottky split-gate fabricated with electron-beam lithography techniques is used to define the one-dimensional channel, but we incorporate an epitaxially grown in situ back-gate, situated ∼1 μm below the electron gas, to provide additional control of the carrier density. Quantized conductance steps can be induced by changing the bias on either gate, highlighting the self-consistent nature of the electrostatics involved. We show that we can, in principle, achieve independent control of the one-dimensional carrier density and channel width.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.106849
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  • 4
    Electronic Resource
    Electronic Resource
    Fabrication of high mobility in situ back-gated (311)A hole gas heterojunctions (1997)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 70 (1997), S. 2750-2752 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Using an n-type (311)A GaAs substrate we have fabricated in situ back-gated GaAs/(Al,Ga)As hole gases with mobilities of μ=1.1×106 cm2 V−1 s−1 at 30 mK. We have investigated both experimentally and theoretically the scattering mechanisms that limit the mobility in both the [2¯33] and [011¯] directions. Using a combination of front and back gates to keep the carrier density constant, we can distinguish between scattering mechanisms which are primarily dependent on the carrier density and those that are sensitive to the shape of the hole wave function. This approach also eliminates complications arising from the variations of the Fermi surface anisotropy with carrier density. Our data confirms that anisotropic interface roughness scattering, arising from the nature of the (311)A GaAs surface, is the dominant scattering mechanism at carrier densities down to ps=5.0×1010 cm−2. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.119012
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  • 5
    Electronic Resource
    Electronic Resource
    Laryngeal oedema due to hereditary angioedema (1977)
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 32 (1977), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.1977.tb11606.x
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  • 6
    Electronic Resource
    Electronic Resource
    Tackling rare syndromes (2001)
    Oxford, UK : Blackwell Science Ltd
    Anaesthesia 56 (2001), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.2001.2369-25.x
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  • 7
    Electronic Resource
    Electronic Resource
    Use of transgenic plants to study the role of ethylene and polygalacturonase during infection of tomato fruit by Colletotrichum gloeosporioides (1998)
    Oxford, U.K. and Cambridge, USA : Blackwell Publishers
    Plant pathology 47 (1998), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The infection of tomato fruit by the postharvest pathogen Colletotrichum gloeosporioides did not proceed until the onset of ripening in response to ethylene. Compared with fruit from wild-type plants, infection progressed more slowly in transgenic fruit in which ethylene biosynthesis and ripening had been inhibited by an ACC oxidase (ACO) antisense transgene. In contrast, transgenic fruit deficient in polygalacturonase developed lesions at the same rate as the wild-type fruit. Ethylene biosynthesis increased rapidly in response to infection of ripe wild-type and ACO antisense fruit but was 25 times greater in the former. Fruit from the ripening mutant ripening inhibitor (rin), which are normally very resistant to infection, became infected quickly when incubated in the presence of ethylene, whereas fruit incubated in the absence of ethylene remained healthy. The ACO 1 mRNA accumulated to detectable levels within 24 h of inoculation of unripe wild-type fruit, prior to the development of visible symptoms, whereas there was no detectable expression in the inoculated ACO antisense fruit. ACO transcripts accumulated to maximum levels during the early stages of infection of ripe fruit, correlating with maximum ethylene biosynthesis. Northern analysis using gene-specific probes for each of the three ACO genes indicated that ACO 1 was the main gene expressed in response to infection and that there was no detectable expression of ACO 2 and 3.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-3059.1998.00228.x
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  • 8
    Electronic Resource
    Electronic Resource
    The prevalence of cutaneous hypersensitivity and its relationship to Pseudomonas colonization and outcome in cystic fibrosis (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical & experimental allergy 20 (1990), S. 0 
    Details
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Forty-seven patients with cystic fibrosis (CF) studied in 1977 have been followed up and reviewed, with respect to the development of immediate cutaneous hypersensitivty to Aspergillus fumigatus and other allergens, and the date of Pseudomonas aernginosa colonization. The prevalence of cutaneous hypersensitivity to inhaled allergens in CF increases with longer allergen exposure, to the extent that the CF patients develop a prevalence of atopy greater than normal controls. Allergen-sensitive patients were found to develop Pseudomonas colonization later, but to have a shorter survival subsequently; there was no relationship between skin tests and overall survival.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2222.1990.tb02803.x
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  • 9
    Electronic Resource
    Electronic Resource
    Topical lignocaine after tonsillectomy in children (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 41 (1986), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.1986.tb13202.x
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  • 10
    Electronic Resource
    Electronic Resource
    TOTAL ENERGY TO PRODUCE FOOD SERVINGS AS A FUNCTION OF PROCESSING AND MARKETING MODES (1977)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 42 (1977), 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: Major food processing and marketing modes were examined in terms of their relative energy intensiveness in order to quantify the differences which exist among them. Detailed energy accounting was executed from point of harvest to point of consumption, using available industry data, direct experimentation, and theoretical engineering analysis for ten potato product models: fresh, flake-dried, microwavedried, granulated, spray-dried, freeze-dried, canned, retort-pouched, refrigerated, and frozen. Total energy for a finished 4-oz serving of mashed potatoes was found to range from a low of about 1950 Btu for fresh to a high of 6950 Btu for frozen, with dehydrated models ranging from 2200 Btu for flaked to 5860 Btu for freeze dried. The broad differences between modes suggest a need for inclusion of energy accounting in decision making for food product development, processing, marketing and preparation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1977.tb12599.x
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