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  • 1
    Electronic Resource
    Electronic Resource
    Growth of juvenile Macrocystis pyrifera (Laminariales) in relation to environmental factors (1984)
    Springer
    Marine biology 83 (1984), S. 301-311 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Instantaneous relative growth rates, μ (d-1), were measured for juveniles of the giant kelp Macrocystis pyrifera transplanted to study sites in Southern California kelp forests between 1978 and 1982. Growth rates ranged from negative values (indicating loss of tissue) to 0.03 (doubling of total frond length every 19 d). Multiple regression analysis of growth versus irradiation, temperature, nitrogen concentration and amount of fouling revealed that all these factors had significant effects, together accounting for about 50% of the total variance. Elevated irradiation and nitrogen levels had strongly stimulatory effects (tissue nitrogen may have been more critical than ambient nitrogen for growth), while high temperature and fouling had strongly inhibitory effects. Irradiation was the most important factor influencing growth in 6 of the 8 transplant experiments. During these 6 experiments, the compensating irradiation level (below which there was no growth) was between 0.4 and 0.7 E m-2 d-1, and saturating irradiation was between 2 and 3 E m-2 d-1. During two of the experiments, growth was apparently limited by extremely high temperatures or low nitrogen levels. Quantum irradiation levels in the kelp forest were generally between the compensation and saturation levels. However, irradiation levels occasionally dropped below the compensation point for several months. Irradiation was occasionally low enough to limit the distribution of juvenile kelp by inhibiting growth, especially in the deeper portions of the kelp forest and under dense canopies formed by adult plants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00397463
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  • 2
    Electronic Resource
    Electronic Resource
    Applications of accelerator-based low-energy positron beams in atomic physics (1987)
    Springer
    Applied physics 43 (1987), S. 235-245 
    Details
    ISSN: 1432-0630
    Keywords: 78.70 ; 34.90 ; 36.10
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Applications of LINAC-based positron beams in atomic physics are described. The following broad subject areas are treated; e+ mobility and momentum transfer cross section determinations, angularly resolved and integral cross sections for e+-atomic processes plus charge transfer (Ps formation) type experiments, experiments with tunable positronium beams and experiments with thermal Ps sources. In addition, some discussion is given concerning the use of channel electron multiplier arrays (CEMAs) in conjunction with charge coupled devices (CCDs) as position sensitive detectors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00635178
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  • 3
    Electronic Resource
    Electronic Resource
    Renal uric acid handling is not affected by beta-adrenoceptor blockade in normotensive subjects (1985)
    Springer
    European journal of clinical pharmacology 28 (1985), S. 223-224 
    Details
    ISSN: 1432-1041
    Keywords: uric acid ; beta-adrenoceptor blockade ; blood pressure ; timolol
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Nine normotensive healthy females received timolol 5 mg daily for a 4-day period and subsequently 20 mg daily for another 4-day period. None of the two dosages of timolol caused significant changes in serum uric acid or 24-h urinary fractional excretion of uric acid. Thus the increments of serum uric acid previously found in hypertensive patients is not likely to be caused by beta-adrenoceptor blockade per se.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00609696
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  • 4
    Electronic Resource
    Electronic Resource
    Inelastic Cross Sections for Positron Scattering from Atomic Hydrogen (1994)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 175-178 (Nov. 1994), p. 1009-1014 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/01/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.175-178.1009.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Deuterium spin lattice relaxation studies of chloroform-d1 dissolved in mixtures of two thermotropic liquid crystals of opposite diamagnetic anisotropies (1985)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 82 (1985), S. 2141-2146 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The spectral density functions J1(ω0) and J2(2ω0) have been determined for CDCl3 dissolved in mixtures of N-(4-ethoxybenzylidene)-4'-n-butylaniline (EBBA) and Merck's licristal ZLI 1167 of various compositions. The measurements have been performed by use of the Jeener–Broekaert pulse sequence at 9.2 and 46.0 MHz. The nematic director is parallel to the direction of the magnetic field at high content of EBBA in the mixture and perpendicular at low content. The molecular dynamic has been studied at the transition point between these two directions. It has been shown that contributions exclusively from molecular rotational diffusion motions and small angle director fluctuations cannot sufficiently account for all the experimental observations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.448352
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  • 6
    Electronic Resource
    Electronic Resource
    Uncalibrated anaesthetic scavenging systems with open reservoirs (1982)
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 37 (1982), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Fifty-three of 114 uncalibrated scavenging systems with open reservoirs had evacuation rates of less than 20 litres/minute. Analysis showed that there was no correlation between the number of hours in use since the date of the last service and the demonstrated change in effectiveness. Calibrated systems which can be continuously monitored have definite advantages.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.1982.tb01817.x
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  • 7
    Electronic Resource
    Electronic Resource
    Stereological estimates of nuclear volume in the prognostic evaluation of primary flat carcinoma in situ of the urinary bladder (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 18 (1991), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Primary, flat carcinoma in situ of the urinary bladder is rare and its behaviour is unpredictable. The aim of this retrospective study was to obtain base-line data and investigate the prognostic value of unbiased, stereological estimates of the volume-weighted mean nuclear volume, nuclear Vv, in 78 bladder biopsies from 22 patients with primary flat carcinoma in situ (Bergkvist grades III-IV). On average, nuclear Vv was 77 μm3 in nine biopsies with morphologically normal urothelium, 292 μm3 in 56 isolated primary lesions and 266 μm3 in lesions of luminal urothelium in 13 biopsies with co-existing invasive carcinoma. No recognizable developmental pattern of nuclear Vv in relation to the time course of disease was found. Nuclear volume in the first biopsy was of the same magnitude in lesions with and without co-existing invasive carcinoma (2P=0.55), and in lesions with short and long duration of invasion-free period (2P 〈 0.20). Nuclear Vv in the first biopsy did not differ between patients who survived and those who died from their primary flat carcinoma in situ (2P=0.07). Dividing the patients on the basis of the group median of the first biopsy showing flat carcinoma in situ (nuclear Vv= 261 μm3), the survival was the same in patients with nuclear Vv above and below the cut-off point (2P=0.16). However, the survival curves showed a tendency to differ in the first 2-8 years of observation. Stereological estimates of nuclear Vv provide objective, quantitative information, but their prognostic value in patients with primary flat carcinoma in situ of the bladder needs further clarification in larger data bases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2559.1991.tb01480.x
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  • 8
    Electronic Resource
    Electronic Resource
    Anthocyanin colourants from elderberry (Sambucus nigra L.). 1. Process considerations for production of the liquid extract (1985)
    Oxford, UK : Blackwell Publishing Ltd
    International journal of food science & technology 20 (1985), S. 0 
    Details
    ISSN: 1365-2621
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Elderberry is shown to be a good source of anthocyanins (Acy), having between 2–10 mg Acylg berry. Anthocyanin concentration is very dependent on variety and maturity. Pressing of the berries gives a significant difference between weight distribution (pomace = 25–40% of total weight) and anthocyanin distribution (Acy in pomace = 75–98% of total Acy). Freezing of the berries prior to pressing gives much less pomace weight, with only a small reduction of anthocyanin distribution in the pomace. Tests of various extraction media (HCl acidified alcohols, aqueous HC1 and aqueous citfic acid) showed the highest anthocyanin recovery for aqueous HCl(0.1 M). Multiple extraction tests show that most of the anthocyanin is extracted from the pomace within two to three steps. The influence of extraction time and extraction temperature is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1985.tb01968.x
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  • 9
    Electronic Resource
    Electronic Resource
    The effect of laser annealing of thin W(100) films on positron transmission reemission properties (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 67 (1990), S. 575-577 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Results on e+ transmission reemission properties are presented for three single-crystal W(100) films of thicknesses 1000, 2000, and 3100 A(ring) for incident e+ energies of 1.4–16 keV. The films were first cleaned with a 10-s laser pulse, then annealed in O2 (10−6 Torr), and finally heated in a vacuum (10−9 Torr). Thereafter the films showed good reemission properties. The maximum transmitted yields of slow e+ were 38% (1000 A(ring)), 27% (2000 A(ring)), and 17% (3100 A(ring)) at incident e+ energies of 4, 5.2, and 7.2 keV, respectively. The energy distributions of the reemitted e+ were characterized by a full width half maximum of 0.15–0.2 eV located at 2.8 eV containing 60%–70% of the e+ superimposed onto a nearly uniform distribution covering the energy interval 0–2.8 eV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.345197
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  • 10
    Electronic Resource
    Electronic Resource
    Sound Intensity Measurement at Low Levels
    Amsterdam : Elsevier
    Journal of Sound and Vibration 166 (1993), S. 195-207 
    Details
    ISSN: 0022-460X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1006/jsvi.1993.1292
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