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  • 2000-2004  (195)
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  • 1
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    The effect of macrophytic cover on survival of Palaemonetes pugio and P. vulgaris (grass shrimp) in the presence of predatory Fundulus heteroclitus (killifish) (2001)
    In:  Contributions to Zoology (1383-4517) vol.70 (2001) nr.2 p.61
    Details
    Publication Date: 2015-05-08
    Description: Effects of three different macrophytic covers and the presence of alternative prey on survival of grass shrimp (Palaemonetes pugio and P. vulgaris) subjected to predation by killifish (Fundulus heteroclitus) were studied in the laboratory. Overall, survival of P. vulgaris was significantly greater (82%) than that of P. pugio (70%). This difference in survival was attributed to the greater tendency of P. pugio to swim outside the covers, making it more vulnerable to predation. Both prey species responded similarly to the different cover conditions. Survival without cover (gravel substrate) was 48%. In cover provided by a plastic plant made to resemble Ambulia, 75% of the starting population survived. In cover furnished by field-collected specimens of the flat chlorophyte, Ulva, survival was 71%, compared to 98% survival in the branched green alga, Codium. Predation pressure on neither species was significantly enhanced or diminished by the presence of a second prey species. For both grass shrimp species, increased survival in Codium in the presence of the predator was attributed to the physically more complex nature of this macrophytic cover.
    Keywords: Palaemonetes ; predation ; macrophytic cover ; survivorship
    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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    The effect of macrophytic cover on survival of Palaemonetes pugio and P. vulgaris (grass shrimp) in the presence of predatory Fundulus heteroclitus (killifish) (2001)
    In:  Contributions to Zoology vol. 70 no. 2, pp. 61-71
    Details
    Publication Date: 2024-01-12
    Description: Effects of three different macrophytic covers and the presence of alternative prey on survival of grass shrimp (Palaemonetes pugio and P. vulgaris) subjected to predation by killifish (Fundulus heteroclitus) were studied in the laboratory. Overall, survival of P. vulgaris was significantly greater (82%) than that of P. pugio (70%). This difference in survival was attributed to the greater tendency of P. pugio to swim outside the covers, making it more vulnerable to predation. Both prey species responded similarly to the different cover conditions. Survival without cover (gravel substrate) was 48%. In cover provided by a plastic plant made to resemble Ambulia, 75% of the starting population survived. In cover furnished by field-collected specimens of the flat chlorophyte, Ulva, survival was 71%, compared to 98% survival in the branched green alga, Codium. Predation pressure on neither species was significantly enhanced or diminished by the presence of a second prey species. For both grass shrimp species, increased survival in Codium in the presence of the predator was attributed to the physically more complex nature of this macrophytic cover.
    Keywords: Palaemonetes ; predation ; macrophytic cover ; survivorship
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 3
    Electronic Resource
    Electronic Resource
    A simple, high power, compact, intracavity frequency-doubled, Q-switched Nd:Y3Al5O12 laser (2002)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 73 (2002), S. 1994-1997 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We have developed a simple, compact, high power, diode-pumped, intracavity frequency-doubled, Nd:Y3Al5O12 laser capable of generating output powers of up to 70 W at 10 kHz, and 16.5 W at 1 kHz. The output beam quality is highly multimode, with an M2∼30. This, combined with the short output pulse duration of 36–60 ns, and the high average power, makes this laser ideal for pumping ultrafast Ti:sapphire laser amplifier systems. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1469672
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  • 4
    Electronic Resource
    Electronic Resource
    New broad spectrum autocorrelator for ultrashort light pulses based on multiphoton photoemission (2000)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 71 (2000), S. 1589-1594 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A prototype autocorrelator device for measuring the pulse width of ultrashort laser pulses in the picosecond and femtosecond regimes has been constructed. The device is based on multiphoton induced ionization of electrons from a charged metal surface mounted on a vibrating silica fiber, which is an entirely different physical principle from those employed by existing methods for ultrashort pulse characterization, e.g., streak cameras or second harmonic generation. The new method distinguishes itself from existing techniques in that it is, in principle, applicable to a very wide range of wavelengths, from the far ultraviolet to the infrared, requires no special optical orientation of a nonlinear crystal, and can be used for both femtosecond and picosecond pulses. The prototype device has been successfully applied to 532 nm laser pulses with a ∼20 ps pulse width, and preliminary work shows it is applicable to femtosecond pulses as well © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1150502
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  • 5
    Electronic Resource
    Electronic Resource
    Consumer Attitudes Toward GMOs: The Ohio Experience (2004)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 69 (2004), 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: : Data were collected from 902 rural and urban residents of Ohio during the winter of 2003 to assess attitudes toward the production of genetically modified (GM) plants and animals. Attitudes were assessed using Likert-type attitude statements. The theoretical perspective used in the investigation was developed from diffusion and risk perception theories. Regression modeling demonstrated that the theoretical model was very good for predicting variability in attitudes toward GM plants and animals. Approximately 61% of the variance in the dependent variable was explained by the statistical model. The findings are discussed in the context of the social acceptability of GM food and fiber products among Ohio residents.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.2004.tb13344.x
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  • 6
    Electronic Resource
    Electronic Resource
    THE HUBBLE DEEP FIELDS (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Astronomy and Astrophysics 38 (2000), S. 667-715 
    Details
    ISSN: 0066-4146
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Notes: Abstract The Hubble space telescope observations of the northern Hubble deep field, and more recently its counterpart in the south, provide detections and photometry for stars and field galaxies to the faintest levels currently achievable, reaching magnitudes V~ 30. Since 1995, the northern Hubble deep field has been the focus of deep surveys at nearly all wavelengths. These observations have revealed many properties of high redshift galaxies and have contributed to important data on the stellar mass function in the Galactic halo.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.astro.38.1.667
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  • 7
    Electronic Resource
    Electronic Resource
    Weak bond stretching for three orientations of Ar–HF at vHF=3 (2000)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 112 (2000), S. 7022-7031 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Three new ArHF (vHF=3) states, (3001), (3101), and (3111), have been observed between 11 350 and 11 420 cm−1 by the hot band transitions from (0001) using intracavity laser induced fluorescence. The term values and rotational constants of these levels are: (3001) ν0=11 385.928 98(28) cm−1, B=0.095 546(32) cm−1; (3101) ν0=11 444.258 12(68) cm−1, B=0.090 617(37) cm−1; and (3111) ν0=11 456.076 51(36) cm−1, B=0.091 863(14) cm−1. Observation of the ArHF (3001) state provides the van der Waals stretching frequency for ArHF at v=3, namely 46.8945(4) cm−1=(3001)–(3000). This value shows an increase of 8.208 cm−1 (21%) upon HF v=3←0 valence excitation. The stretching frequency for the T shaped ArHF is (3111)–(3110)=33.7055(5) cm−1. This value is only 7% greater than that observed at v=1. The (vHF101) Σ bend-stretch combination state, corresponding to (νs=1) of the Ar–FH configuration, has not been observed at vHF=0–2. The stretching frequency here is (3101)–(3100)=31.8178(8) cm−1. The soft-mode frequencies reveal strong bend-stretch coupling in the complex. Excellent agreement (within 0.3 cm−1) is found between experiment and prediction from Hutson's H6(4, 3, 2) potential [J. Chem. Phys. 99, 9337 (1993)], for the three new levels. Large basis set coupled cluster calculations [CCSD(T)] of the Ar–HF intermolecular potential surface, V(R,θ,r), are presented for r=0.6–2.0 Å and θ=0–180° on a grid with 15° spacing. This is an enlargement of the HF valence coordinate of more than double the equilibrium value. The dependence of the intermolecular potential upon the HF valence coordinate, r, is very anisotropic, being maximal for θ=0° and becoming essentially independent of r for θ≥45°. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.481300
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  • 8
    Electronic Resource
    Electronic Resource
    Extracellular phospholipase activity is a virulence factor for Cryptococcus neoformans (2001)
    Oxford, UK : Blackwell Science, Ltd
    Molecular microbiology 39 (2001), S. 0 
    Details
    ISSN: 1365-2958
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: The human pathogenic fungus Cryptococcus neoformans secretes a phospholipase enzyme that demonstrates phospholipase B (PLB), lysophospholipase hydrolase and lysophospholipase transacylase activities. This enzyme has been postulated to be a cryptococcal virulence factor. We cloned a phospholipase-encoding gene (PLB1) from C. neoformans and constructed plb1 mutants using targeted gene disruption. All three enzyme activities were markedly reduced in the mutants compared with the wild-type parent. The plb1 strains did not have any defects in the known cryptococcal virulence phenotypes of growth at 37°C, capsule formation, laccase activity and urease activity. The plb1 strains were reconstituted using the wild-type locus and this resulted in restoration of all extracellular PLB activities. In vivo testing demonstrated that the plb1 strain was significantly less virulent than the control strains in both the mouse inhalational model and the rabbit meningitis model. We also found that the plb1 strain exhibited a growth defect in a macrophage-like cell line. These data demonstrate that secretory phospholipase is a virulence factor for C. neoformans.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2958.2001.02236.x
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  • 9
    Electronic Resource
    Electronic Resource
    Emergency response preparedness: small group training. Part 2 - training methods compared with learning styles (2000)
    Bradford : Emerald
    Disaster prevention and management 9 (2000), S. 180-199 
    Details
    ISSN: 0965-3562
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Technology
    Notes: Continues from Part 1 and investigates how the learning styles and training methods for individuals and groups can be matched to maximise the efficiency of the training programme. In a similar manner to identifying personal learning styles, training methods can be classified by their efficiency with the different learning-style groups. The training methods are divided into large and small group activities together with individual training processes. The learning styles of participants are then matched to the training styles.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/09653560010335112
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  • 10
    Electronic Resource
    Electronic Resource
    Emergency response preparedness: small group training. Part I - training and learning styles (2000)
    Bradford : Emerald
    Disaster prevention and management 9 (2000), S. 105-116 
    Details
    ISSN: 0965-3562
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Technology
    Notes: This is Part 1 of a multi-part paper and examines small group training for those charged with responding in an emergency situation. To ensure both effective and efficient training it is important to understand that people learn in different ways. Their learning styles have to be taken into account for both the design and the implementation of the learning experiences. Discusses different learning styles and tools available.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/09653560010326987
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