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  • 1
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    A new Suberites (Demospongiae: Hadromerida: Suberitidae) from the tropical Indo-West Pacific (2009)
    In:  Zoologische Mededelingen vol. 83 no. 29, pp. 853-862
    Details
    Publication Date: 2024-01-12
    Description: In this paper we describe Suberites diversicolor spec. nov. (Porifera: Demospongiae: Hadromerida: Suberitidae) from four enclosed anchialine lakes located in Indonesia and from a confined system in Singapore. Initially this species was thought to be specific to anchialine lakes, but further comparison to coastal areas indicated that it is more widespread in inshore systems. We have used morphological characters to distinguish this species and a molecular marker to confirm that all types are the same species. Suberites diversicolor spec. nov. is encrusting or massive with small protrusions or larger globular branches. The external colour can be olive-green, blue, purple, red-orange, or orange-yellow. Suberites diversicolor spec. nov. differs from known shallow water species of the genus Suberites in the tropical Indo-Pacific due to its diverse display of colour-morphs and the presence of larger tylostyles with a wide size range.
    Keywords: Porifera ; Hadromerida ; Suberites ; new species ; Indonesia ; Singapore ; anchialine lakes ; brackish water
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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  • 2
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    Biodiversity of shallow-water sponges (Porifera) in Singapore and description of a new species of Forcepia (Poecilosclerida: Coelosphaeridae) (2012)
    In:  Contributions to Zoology vol. 81 no. 1, pp. 55-71
    Details
    Publication Date: 2024-01-12
    Description: A surprisingly high number of shallow water sponge species (197) were recorded from extensive sampling of natural intertidal and subtidal habitats in Singapore (Southeast Asia) from May 2003 to June 2010. This is in spite of a highly modified coastline that encompasses one of the world\xe2\x80\x99s largest container ports as well as extensive oil refining and bunkering industries. A total of 99 intertidal species was recorded in this study. Of these, 53 species were recorded exclusively from the intertidal zone and only 45 species were found on both intertidal and subtidal habitats, suggesting that tropical intertidal and subtidal sponge assemblages are different and distinct. Furthermore, only a third of the fouling species of sponges from a previous study was recorded in this study, thus suggesting that sponge assemblages from natural and fouling communities in the tropics are different as well. A new species, Forcepia (Forcepia) vansoesti is described from Singapore. Members of this genus possess unique spicules shaped in the form of a pair of forceps. The new species is distinguished from its congeners in having the largest forceps (nearly 300 \xce\xbcm in length) so far recorded in the Indo-Pacific.
    Keywords: intertidal ; Southeast Asia ; sponge assemblage ; subtidal ; tropical
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 3
    Electronic Resource
    Electronic Resource
    Voltammetry at High Pressure (1957)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 61 (1957), S. 1443-1445 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j150556a047
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Effects of O2, H2, and N2 gases on the field emission properties of diamond-coated microtips (1999)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 75 (1999), S. 1179-1181 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report the effects of O2, H2, and N2 residual gases on the field emission properties of uncoated and diamond-coated individual Mo microtips. The microtips are made using electrochemical etching techniques and positioned 5 μm from the anode using a scanning tunneling microscopy system. We observe that the field emission (FE) current and turn-on voltage of diamond-coated microtips are significantly less degraded by O2 exposure than those of uncoated Mo microtips. H2 exposure enhances the FE properties of both uncoated and diamond-coated microtips, while N2 exposure does not have any significant effect. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.124636
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  • 5
    Electronic Resource
    Electronic Resource
    Carbon Monoxide Pretreatment of Subbituminous Coals (1994)
    s.l. : American Chemical Society
    Energy & fuels 8 (1994), S. 294-300 
    Details
    ISSN: 1520-5029
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ef00044a002
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  • 6
    Electronic Resource
    Electronic Resource
    Nelson's stochastic quantization of a free linearized gravitational field and its Markovian structure (1983)
    Springer
    Letters in mathematical physics 7 (1983), S. 469-478 
    Details
    ISSN: 1573-0530
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract It is shown that by applying Nelson's stochastic quantization scheme to a free linearized gravitational field tensor, one can associate with the resulting stochastic system a stochastic tensor field which coincides with the ‘space’ part of the Riemannian tensor in Euclidean space-time. However, such a stochastic field fails to satisfy the Markov property. Instead, it satisfies the reflection positivity. The Markovian structure of the stochastic fields associated with the electromagnetic field is also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00402246
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  • 7
    Electronic Resource
    Electronic Resource
    Stochastic quantisation of a gauge field in the infrared-soft flow gauges (1988)
    Springer
    Letters in mathematical physics 16 (1988), S. 109-116 
    Details
    ISSN: 1573-0530
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract Quantisation of the Abelian gauge field in some classes of the noncovariant infrared-soft gauges can be carried out consistently based on the classical field equations and the basic principles of stochastic mechanics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00402017
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  • 8
    Electronic Resource
    Electronic Resource
    Euclidean electromagnetic field as Ito's random current: a simple proof of Markov property (1980)
    Springer
    Letters in mathematical physics 4 (1980), S. 465-467 
    Details
    ISSN: 1573-0530
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract Euclidean electromagnetic field is considered as Ito's random current, which facilitates a simple proof of its Markov property.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00943432
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  • 9
    Electronic Resource
    Electronic Resource
    Stochastic quantisation of a gauge field in the spatial axial gauge (1990)
    Springer
    Letters in mathematical physics 19 (1990), S. 115-120 
    Details
    ISSN: 1573-0530
    Keywords: 81C20 ; 81E13 ; 81E05
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract The stochastic quantisation method of Nelson can be applied to quantise an Abelian gauge field in the spatial axial gauge.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01045881
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  • 10
    Electronic Resource
    Electronic Resource
    Recent development in the fabrication of metal matrix-particulate composites using powder metallurgy techniques (1994)
    Springer
    Journal of materials science 29 (1994), S. 1999-2007 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract It is advantageous to fabricate metal matrix-particulate composites (MMPCs) using powder metallurgy (PM) because the fabricated composites possess a higher dislocation density, a small sub-grain size and limited segregation of particles, which, when combined, result in superior mechanical properties. The various PM-related processes currently in use in the fabrication of MMPCs, are reviewed, outlining the common problems encountered in each of these fabrication processes. The more recently developed PM techniques to fabricate MMPCs are also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01154673
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