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  • 1
    Electronic Resource
    Electronic Resource
    InGaAs heteroepitaxy on GaAs compliant substrates: X-ray diffraction evidence of enhanced relaxation and improved structural quality (1999)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 75 (1999), S. 1559-1561 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In0.44Ga0.56As (3% mismatch) films 3 μm thick were grown simultaneously on a conventional GaAs substrate, glass-bonded GaAs compliant substrates employing glasses of different viscosity, and a twist-bonded GaAs compliant substrate. High-resolution triple-crystal x-ray diffraction measurements of the breadth of the strain distribution in the films and atomic force microscopy measurements of the film's surface morphology were performed. The films grown on the glass-bonded compliant substrates exhibited a strain distribution whose breadth was narrowed by almost a factor of 2 and a surface roughness that decreased by a factor of 4 compared to the film simultaneously grown on the conventional substrate. These improvements in the film's structural quality were observed to be independent of the viscosity of the glass-bonding media over the range of viscosity investigated and were not observed to occur for the film grown on the twist-bonded substrate. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.124754
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  • 2
    Electronic Resource
    Electronic Resource
    Microscale lithography via channel stamping: Relationships between capillarity, channel filling, and debonding (1999)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 74 (1999), S. 1332-1334 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A polymer or metallo-organic precursor solution may be transferred from the channels of a stamp to a substrate producing a micron or submicron scale pattern. The stamped polymer pattern is used as a mask for device fabrication. The stamped metallo-organic precursor solution is heat treated to produce a metal or ceramic pattern directly. Here we report conditions that optimize the filling of channels, the debonding of the solution from the channels during evaporation, and the transfer of the pattern to a substrate. We show that poor wetting can optimize these conditions. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.123541
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  • 3
    Electronic Resource
    Electronic Resource
    Estimates of gene flow among neighbouring populations of brown trout (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 46 (1995), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Between-population gene flow was estimated in neighbouring freshwater and anadromous Salmo trutta populations from Asturias, Northern Spain. Populations from the same drainage showed a high mean level of gene flow. Gene flow was also found between populations from different drainages and was negatively related to the distance between river mouths. The strength of the homing orientation of migratory individuals (sea trout) is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1995.tb01099.x
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  • 4
    Electronic Resource
    Electronic Resource
    Identification of Atlantic salmon × brown trout hybrids with a nuclear marker useful for evolutionary studies (1999)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 54 (1999), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: A new nuclear DNA marker is described to identify Atlantic salmon, brown trout, and their hybrids. Species-specific banding patterns are obtained by digestion of genomic DNA with the restriction endonuclease Sac I and hybridization with a histone DNA probe. FISH analyses in hybrid metaphases illustrate the potential of interspecific hybrids for evolutionary studies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1999.tb00844.x
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  • 5
    Electronic Resource
    Electronic Resource
    Redetermination of di-μ-bromo-bis[(N,N,N',N'-tetramethylethylenediamine-N,N')lithium] (1999)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 55 (1999), S. 0-0 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270199099096
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  • 6
    Electronic Resource
    Electronic Resource
    Taphonomy of crown-of-thorns starfish: implications for recognizing ancient population outbreaks (1995)
    Springer
    Coral reefs 14 (1995), S. 91-97 
    Details
    ISSN: 1432-0975
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Notes: Abstract.  A field experiment was conducted to determine whether in situ mass mortality of Acanthaster planci sub-sequent to a simulated outbreak would leave a recognizable signature in surficial reef sediments. Constituentparticle analyses comparing sediments that received starfish carcasses to those that did not revealed that, after a four year interval, the mass mortality was reflected by elevated abundances of starfish ossicles in 1 – 2 mm and 2 – 4 mm size classes, but not in 〉 4 mm and 0.5 – 1 mmsize classes. Additional field study of starfish taphonomy revealed that the abundance of starfish ossicles in surficial sediments decreases through two orders of magnitude between two weeks and four years post-mortem, while tumbling experiments suggest that the size distribution of starfish ossicles is modified by physical processes: the 〈0.5 mm size classes increases at the expense of the 〉 4 mm class. Taphonomic biasing increased the abund-ance of crown-of-thorns starfish (COTS) skeletal elements in the 0.5-1 mm size fraction, while the 1 – 2 mm size and 2 – 4 mm fractions produced the most reliable signature of starfish mass mortality based on element abundance. Our results demonstrate the importance of taphonomic processes in altering the original size frequency distribution of the COTS skeleton and their potential for biasing predictions of past population levels derived from constituent particle analyses of surficial reef sediments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00303429
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  • 7
    Electronic Resource
    Electronic Resource
    Taphonomy of crown-of-thorns starfish: implications for recognizing ancient population outbreaks (1995)
    Springer
    Coral reefs 14 (1995), S. 91-97 
    Details
    ISSN: 1432-0975
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Notes: Abstract A field experiment was conducted to determine whether in situ mass mortality of Acanthaster planci subsequent to a simulated outbreak would leave a recognizable signature in surficial reef sediments. Constituent particle analyses comparing sediments that received starfish carcasses to those that did not revealed that, after a four year interval, the mass mortality was reflected by elevated abundances of starfish ossicles in 1–2 mm and 2–4 mm size classes, but not in 〉4 mm and 0.5–1 mm size classes. Additional field study of starfish taphonomy revealed that the abundance of starfish ossicles in surficial sediments decreases through two orders of magnitude between two weeks and four years post-mortem, while tumbling experiments suggest that the size distribution of starfish ossicles is modified by physical processes: the 〈0.5 mm size classes increases at the expense of the 〉4 mm class. Taphonomic biasing increased the abundance of crown-of-thorms starfish (COTS) skeletal elements in the 0.5–1 mm size fraction, while the 1–2 mm size and 2–4 mm fractions produced the most reliable signature of starfish mass mortality based on element abundance. Our results demonstrate the importance of taphonomic processes in altering the original size frequency distribution of the COTS skeleton and their potential for biasing predictions of past population levels derived from constituent particle analyses of surficial reef sediments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00303429
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  • 8
    Electronic Resource
    Electronic Resource
    The epidemiology of antisocial personality disorder (1999)
    Springer
    Social psychiatry and psychiatric epidemiology 34 (1999), S. 231-242 
    Details
    ISSN: 1433-9285
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract This paper reviews the current state of knowledge about the frequency, natural history, risk factors and associations of antisocial personality disorder. Important recent developments are discussed, and where possible, findings have been tabulated. Epidemiological surveys have shown that antisocial personality disorder is a common disorder, with a prevalence rate of between 2 and 3% among community samples, rising to 60% among male prisoners. Antisocial personality disorder is a chronic condition, and is associated with a multitude of medical and social problems. These include substance abuse, deliberate self harm and crime. Genetic and environmental factors have been implicated in the aetiology of the disorder. However, despite the large amount of research into antisocial personality disorder, longitudinal data are missing and the validity of the diagnosis, therefore, remains questionable. The paper concludes with recommendations for future research.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001270050138
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  • 9
    Electronic Resource
    Electronic Resource
    Interplanetary scintillation observations of interaction regions in the solar wind (1998)
    Springer
    Annales geophysicae 16 (1998), S. 1265-1282 
    Details
    ISSN: 0992-7689
    Keywords: EISCAT ; Interplanetary scintillation ; Solar Wind
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Co-rotating interaction regions (CIRs) between fast and slow streams of plasma are a prominent feature of the solar wind. Measurements of interplanetary scintillation (IPS) using the three widely separated antennas of the EISCAT facility have been used to detect the compression regions at the leading edges of interaction regions and to determine the location and velocity of the structure. Observations show that interaction regions have developed as close to the Sun as 25–30 solar radii, a result supported by theoretical modelling which shows that the conditions needed for CIRs to develop exist inside 30 solar radii.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00585-998-1265-5
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  • 10
    Electronic Resource
    Electronic Resource
    EISCAT measurements of the solar wind (1997)
    Springer
    Annales geophysicae 14 (1997), S. 1235-1245 
    Details
    ISSN: 0992-7689
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract EISCAT observations of interplanetary scintillation have been used to measure the velocity of the solar wind at distances between 15 and 130R⊙ (solar radii) from the Sun. The results show that the solar wind consists of two distinct components, a fast stream with a velocity of ∼ 800 km s−1 and a slow stream at ∼ 400 kms−1. The fast stream appears to reach its final velocity much closer to the Sun than expected. The results presented here suggest that this is also true for the slow solar wind. Away from interaction regions the flow vector of the solar wind is purely radial to the Sun. Observations have been made of fast wind/slow wind interactions which show enhanced levels of scintillation in compression regions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00585-996-1235-8
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