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  • 1
    Electronic Resource
    Electronic Resource
    Chilling-induced ethylene production by beans and peas (1987)
    Springer
    Journal of plant growth regulation 6 (1987), S. 201-208 
    Details
    ISSN: 1435-8107
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The effects of chilling on ethylene production by leaf discs and whole plants of bean (chilling-sensitive) and pea (chilling-tolerant) were studied. When pea or bean leaf discs were excised and incubated at 25°C, transient increases in ethylene production and 1-aminocyclopropane-1-carboxylic acid (ACC) accumulation were observed. Both pea and bean discs kept at 5°C evolved little ethylene, but levels of ACC increased in pea discs and not in bean discs. When discs of either species were chilled at 5°C immediately after excision and then transferred to 25°C 9 h later, increases in their ACC levels and ethylene production rates were observed. Discs were also incubated at 25°C for 12 h to allow excision-induced ethylene production to subside and then chilled at 5°C. Nine hours later, these discs were transferred to 25°C, and an increase in ethylene production was observed. These data indicate that chilling suppresses excision-induced ethylene production and enhances the production of ethylene after transfer to 25°C. Chilling of whole plants resulted in increased production of ethylene and ACC in the chilling-sensitive bean but not in the chilling-tolerant pea. Treatment of bean plants with the ethylene antagonists silver thiosulfate, norbornadiene, or aminooxyacetic acid, or of pea plants with ethylene, did not affect the appearance of chilling injury symptoms, indicating that ethylene does not induce injury symptoms and may not have an adaptive role in chilling stress.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02102548
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  • 2
    Electronic Resource
    Electronic Resource
    The advantages of a high density, mixed land use, linear urban development (1997)
    Springer
    Transportation 24 (1997), S. 295-307 
    Details
    ISSN: 1572-9435
    Keywords: city form ; transport characteristics ; urban development
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying
    Notes: Abstract This paper describes the land use and transport characteristics of a strip of urban development located along the northern shore of Hong Kong Island. The strip of land, with an area of 22.5 sq. km, is 17 km long and has an average width of 1.3 km. It has a population of approximately one million and provides over 700,000 jobs. Despite its small size, it accommodates the CBD, residential districts, shopping complexes as well as most of the civic/institutional facilities that a city needs. Its urban form is linear not by design but by default – the topography of the area has constrained the development from spreading sideways. Surprisingly however, apart from economy in land utilization, it is considered to possess three other good qualities: high accessibility enjoyed by residents; few roads and commercially viable public transport. Its travel characteristics are analyzed, using results of a home interview survey conducted by the Government in 1992. In addition, various statistics published by the Government and public transport authorities are also used in the analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004987422746
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  • 3
    Electronic Resource
    Electronic Resource
    Optical properties of laser-processed In x Ga1−x As (1994)
    Springer
    Applied physics 59 (1994), S. 617-621 
    Details
    ISSN: 1432-0630
    Keywords: 78.30.Fs ; 68.55.Nq ; 61.70.At
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Various spots in GaAs, In-diffused with the 1.064 μm line of pulsed Nd:YAG laser with several energy densities, have been characterized and compared with samples prepared by the conventional rapid thermal annealing method. Of the energy densities used, the spot processed with an energy density of 7 J/cm2 shows In x Ga1−x As phases with an indium concentration of 60% and below. An abrupt boundary in the indium concentration is observed at the edge of the laser-annealed spot. The diffusion depth is found to be less than 1000 Å. The spot processed with an energy density of 14 J/cm2 shows considerable damage from the irradiation resulting in strain in the lattice. The samples prepared by the thermal annealing method show similar results to the laser-diffused samples. However, these thermally annealed samples suffer from arsenic loss unlike the laser-processed samples. It can be concluded that laser-induced alloying of indium into GaAs can be achieved with less arsenic loss than the thermal annealing method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00331922
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  • 4
    Electronic Resource
    Electronic Resource
    Production of cellulase by a wild strain of Chaetomium globosumusing delignified oil palm empty-fruit-bunch fibre as substrate (1997)
    Springer
    Applied microbiology and biotechnology 47 (1997), S. 590-595 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Studies on the feasibility of using delignified oil palm empty-fruit-bunch (OPEFB) fibres as a substrate for cellulase production by Chaetomium globosum strain 414 were carried out in shake-flask cultures containing different types and concentrations of nitrogen source. Peptone, as nitrogen source, gave maximum production of all the three main components of the cellulase complex (endoglucanase or carboxymethylcellulase, cellobiohydrolase or filter-paper-hydrolysing enzyme and β-glucosidase), followed by yeast extract, urea, KNO3 and (NH4)2SO4. The maximum specific growth rate (μmax) of C. globosum strain 414 grown in medium containing OPEFB and peptone was 0.038 h−1. In all the fermentations, the fungus was able to produce all the three cellulases with significant amounts of β-glucosidase, except when using (NH4)2SO4 as nitrogen source, where β-glucosidase was not produced. With 6 g/l peptone and 10 g/l delignified OPEFB fibres, the fungus produced maximum concentrations of FPase, carboxymethylcellulase and β-glucosidase: 1.4, 30.8 and 9.8 U/ml, giving productivities of 10, 214 and 24 U l−1h−1, respectively. The cellulase mixture, partially purified by ammonium sulphate precipitation, was able to hydrolyse delignified OPEFB fibres, converting about 68 % of the cellulosics to reducing sugars after 5 days.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530050978
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  • 5
    Electronic Resource
    Electronic Resource
    Parallel direct SCF for large-scale calculations (1993)
    Springer
    Theoretical chemistry accounts 84 (1993), S. 301-314 
    Details
    ISSN: 1432-2234
    Keywords: Parallel direct SCF ; Quantum chemistry ; MPSCF ; LAN
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Quantum chemistry has become an essential tool in many areas of chemical research; however, quantum chemistry is not yet playing a role in many exciting new chemical disciplines, such as medicinal chemistry and materials science, where the size of the chemical systems has been too large to study usingab initio chemical methods. The development of massively parallel supercomputers offers the potential to predict properties relevant to a variety of problems in these burgeoning new fields. The goal of this project is to develop a set of parallelized “production codes” for initially a relatively limited set of methods. As a key part of this project we are experimenting with the use of modern programming languages and methodologies to make these programs both portable and reusable. This paper describes the development of a massively parallel direct SCF program, MPSCF. For systems over a few hundred basic functions, MPSCF running on 256 nCUBE processors performs nearly as well as Gaussian 90 running on a single processor Cray Y-MP. On the next generation of parallel computers, such as the Intel Touchstone Delta, MPSCF should allow the SCF calculations on chemical systems too large for vector supercomputers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01113269
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  • 6
    Electronic Resource
    Electronic Resource
    An NRD-fed dielectric rod antenna for the short millimeter wave band (1989)
    Springer
    International journal of infrared and millimeter waves 10 (1989), S. 1327-1337 
    Details
    ISSN: 1572-9559
    Keywords: Dielectric Antenna ; NRD guide ; polar diagram ; Millimeter Wave
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A simple E-plane tapered rectangular dielectric rod fed by NRD guide is used as a millimeter wave antenna. This class of aerial features attractive radiation patterns with relatively low sidelobes and moderate gain. The measured results show that such an antenna and mounting structure can be exploited as effective radiating element in the short millimeter wave frequency band.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01009257
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  • 7
    Electronic Resource
    Electronic Resource
    Harmonic effects in superconducting tunnel junction mixers (1991)
    Springer
    International journal of infrared and millimeter waves 12 (1991), S. 1265-1273 
    Details
    ISSN: 1572-9559
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01014684
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  • 8
    Electronic Resource
    Electronic Resource
    An NRD fed dielectric rod antenna for the short millimeter wave band (1989)
    Springer
    International journal of infrared and millimeter waves 10 (1989), S. 1153-1163 
    Details
    ISSN: 1572-9559
    Keywords: Dielectric Antenna ; NRD guide ; polar diagram ; Millimeter Wave
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A simple E-plane tapered rectangular dielectric rod fed by NRD guide is used as a millimeter wave antenna. This class of aerial features attractive radiation patterns with relatively low sidelobes and moderate gain. The measured results show that such an antenna and mounting structure can be exploited as effective radiating element in the short millimeter wave frequency band.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01010373
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  • 9
    Electronic Resource
    Electronic Resource
    Preparation of silica-based cation-exchangers for use in ion chromatography (1989)
    Springer
    Chromatographia 27 (1989), S. 316-320 
    Details
    ISSN: 1612-1112
    Keywords: Column liquid chromatography ; Ion chromatography ; Silica-based cation-exchanger ; Trimethylsilyl chlorosulfonate ; Lanthanides
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary A low exchange-capacity, silica-based cation-exchanger for use in ion chromatography has been synthesized. (p-Trimethylsilyl)benzyl-dimethylchlorosilane (TBDCS) reacts with trimethylsilyl chlorosulfonate (TMCS) to produce a compound sulfonated in the para position of the type ArSO2OSi (CH3)3, which is bonded to 5 μm porous silica beads and hydrolysed to the corresponding arylsulfonic acid. The product is hydrophilic and has a high degree of sulfonation, efficiencies of packed columns reaching about 40,000–50,000 plates per meter for the separation of the Mn2+ ion. The new stationary phase has been applied to the ion chromatography of some organic and inorganic ions. It is notable that 14 lanthanides can be separated by isocratic elution about one hour on a 150×4·6 mm column, with 4 mM ethylenediamine and 6 mM α-hydroxyl-isobutanoic acid (pH 3.67) as mobile phase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02321276
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  • 10
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    Soil Methane Production, Anaerobic and Aerobic Oxidation in Porewater of Wetland Soils of the Minjiang River Estuarine, China (2018)
    Springer
    Details
    Publication Date: 2018-02-10
    Print ISSN: 0277-5212
    Electronic ISSN: 1943-6246
    Topics: Biology
    Published by Springer
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