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  • 1
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    Revision of Schizomussaenda (Rubiaceae) (2008)
    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.53 (2008) nr.2 p.385
    Details
    Publication Date: 2015-03-06
    Description: Based on specimen examination and field observation, both Mussaenda henryi Hutch. and M. elongata Hutch. were transferred from Mussaenda to Schizomussaenda. A new combination, Schizomussaenda henryi (Hutch.) X.F.Deng & D.X.Zhang, was made for Mussaenda henryi Hutch. Mussaenda elongata Hutch. and Schizomussaenda dehiscens (Craib) H.L.Li were reduced to synonymy of S. henryi.
    Keywords: Rubiaceae ; Mussaenda ; Schizomussaenda ; combination ; synonym
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
    Format: application/pdf
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  • 2
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    Revision of Schizomussaenda (Rubiaceae) (2008)
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 53 no. 2, pp. 385-392
    Details
    Publication Date: 2024-01-12
    Description: Based on specimen examination and field observation, both Mussaenda henryi Hutch. and M. elongata Hutch. were transferred from Mussaenda to Schizomussaenda. A new combination, Schizomussaenda henryi (Hutch.) X.F.Deng & D.X.Zhang, was made for Mussaenda henryi Hutch. Mussaenda elongata Hutch. and Schizomussaenda dehiscens (Craib) H.L.Li were reduced to synonymy of S. henryi.
    Keywords: Rubiaceae ; Mussaenda ; Schizomussaenda ; combination ; synonym
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 3
    Electronic Resource
    Electronic Resource
    Competitive Implementation of Parallel Programs (1999)
    Springer
    Algorithmica 23 (1999), S. 14-30 
    Details
    ISSN: 1432-0541
    Keywords: Key words. Parallel computation, Competitive analysis, Communication delay, Scheduling, Compiler.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract. We apply the methodology of competitive analysis of algorithms to the implementation of programs on parallel machines. We consider the problem of finding the best on-line distributed scheduling strategy that executes in parallel an unknown directed acyclic graph (dag) which represents the data dependency relation graph of a parallel program and which is revealed as execution proceeds. We study the competitive ratio of some important classes of dags assuming a fixed communication delay ratio τ that captures the average interprocessor communication measured in instruction cycles. We provide competitive algorithms for divide-and-conquer dags, trees, and general dags, when the number of processors depends on the size of the input dag and when the number of processors is fixed. Our major result is a lower bound Ω (τ / log τ ) of the competitive ratio for trees; it shows that it is impossible to design compilers that produce almost optimal execution code for all parallel programs. This fundamental result holds for almost any reasonable distributed memory parallel computation model, including the LogP and BSP model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00009248
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  • 4
    Electronic Resource
    Electronic Resource
    Comparison between fission track method and laser-fluorometry and fluorocolorimetry for determination of uranium concentration in natural water
    Amsterdam : Elsevier
    International Journal of Radiation Applications & Instrumentation. Part D, 12 (1986), S. 801-804 
    Details
    ISSN: 1359-0189
    Keywords: Fission track method ; fluorocolorimetry ; laser-fluorometry ; natural water ; polycarbonate track detector ; uranium concentration
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/1359-0189(86)90706-5
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  • 5
    Electronic Resource
    Electronic Resource
    Rapid magnetic reconnection in the Earth’s magnetosphere mediated by whistler waves (2001)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 410 (2001), S. 557-560 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Magnetic reconnection has a crucial role in a variety of plasma environments in providing a mechanism for the fast release of stored magnetic energy. During reconnection the plasma forms a ‘magnetic nozzle’, like the nozzle of a hose, and the rate is controlled by how fast plasma ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/35069018
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  • 6
    Electronic Resource
    Electronic Resource
    Cytogenetic analysis of two interspecific Citrus allotetraploid somatic hybrids and their diploid fusion parents (2004)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 123 (2004), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Microsporogenesis of two interspecific allotetraploid somatic hybrids, i.e.‘Hamlin’ sweet orange +‘Rough Lemon’ (HR) and ‘Key’ lime +‘Valencia’ sweet orange (KV), was examined and compared with their corresponding diploid fusion parents. Meiotic analysis revealed that only 13.2 and 18.0% of the meiocytes exhibited normal tetrad formation in HR and KV somatic hybrid plants, respectively, and irregular chromosome behaviour with univalent or multivalent pairing occurred. Moreover, meiotic abnormalities such as chromosome bridges, chromosomes orientated away from the equatorial plate, especially lagging chromosomes, which resulted in different sizes of pollen grain, were frequently observed in both somatic hybrids. As expected, the percentage of chromosome abnormalities was much lower in their corresponding diploid fusion parents. HR and KV had 15.4 and 7.2% pollen germinability, respectively, intermediate between their corresponding fusion parents. The meiotic behaviour of these somatic hybrids provided valuable information for their practical utilization in a citrus breeding programme.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0523.2004.00972.x
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  • 7
    Electronic Resource
    Electronic Resource
    Studies of Pd-Fe fine particles (abstract) (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 67 (1990), S. 5907-5907 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A vapor-deposition technique was used to prepare Pd-Fe fine particles. Since palladium is fairly inert, it is our hope to develop magnetic particles which are stable in air. An as-cast alloy of bulk Pd-Fe was made by an arc-melting method. This as-cast ingot was evaporated from an alumina crucible in argon gas at a pressure of 2.0 Torr. Particles formed in the gas and were then deposited on a water-cooled copper plate by thermophoresis. Chemical analysis, x-ray diffraction and transmission electron microscopy were used to investigate the composition, structure, and morphology of the particles. The as-received fine particles were amorphous. They showed a Curie temperature of 420 °C, which was lower than that of the as-cast ingot (600 °C). Saturation magnetization and coercivity were 53.5 emu/g and 2000 Oe at 10 K as measured by a SQUID magnetometer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.346012
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  • 8
    Electronic Resource
    Electronic Resource
    Global energy confinement under coupling of the transport process with magnetohydrodynamic modes (1995)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 2 (1995), S. 2753-2759 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Macroscopic instabilities are governed by transport-determined plasma profiles and transport, in turn, is affected by instabilities. It is clear that neither transport process nor the behavior of instabilities can be treated in isolation. A model is developed for investigating the effects of the instabilities on global energy confinement in tokamaks. The results clearly demonstrate that magnetohydrodynamic (MHD) instabilities coupled with the transport process change not only the value of global energy confinement time, but also, perhaps more importantly, the energy confinement scaling law. While considering MHD effects, global energy confinement becomes sensitively dependent on the boundary transport conditions, and the cases with and without MHD stability can result in quite different parameter behavior of the global energy confinement. Such coupling should be considered when attempts are made to analyze the global energy confinement in tokamaks. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.871240
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  • 9
    Electronic Resource
    Electronic Resource
    Role of surface instability and anisotropy in strain relaxation of epitaxial SiGe on Si (110) (1999)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 85 (1999), S. 7689-7693 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report on the morphological evolution of strained, low-mismatch Si0.67Ge0.33 and Si0.75Ge0.25 films on Si (110), covering both the elastic and early stages of plastic relaxation during growth. It is seen that three-dimensional island formation is suppressed at 650 and 700 °C on the Si (110) surface, unlike on the Si (100) surface under the same growth conditions. Instead, a high density of ledges oriented along an elastically hard 〈111〉 direction, and a very low density of nanowires oriented along the single in-plane 〈110〉 azimuth are observed. Continued growth leads to the formation of misfit defects oriented along the 〈110〉 direction and disappearance of the nanowires. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.370572
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  • 10
    Electronic Resource
    Electronic Resource
    Ion beam rehydrogenation and post-hydrogenation of a-Si:H (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 1604-1607 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have studied the rehydrogenation and post-hydrogenation of a-Si:H using a Kaufman ion beam source. The achievement of an air-mass-one (AM1), photo-to-dark conductivity ratio of 5.6×105 with a rehydrogenated a-Si:H sample was reported earlier [Y. S. Tsuo, E. B. Smith, and S. K. Deb, Appl. Phys. Lett. 51, 1436 (1987)]. In this communication we report recent results of the rehydrogenation study and new results of a study of the post-hydrogenation of amorphous silicon deposited by glow discharge at 480 °C. AM1 photo-to-dark conductivity ratios as high as 9.5×106 (with a photoconductivity of 8.6×10−6 Ω cm−1) and 1.1×105 (with a photoconductivity of 6.3×10−6 Ω cm−1) have been obtained with a rehydrogenated sample and a post-hydrogenated sample, respectively. We also report the results of the hydrogen depth profile and photostability measurements of these samples.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.341800
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