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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Hydrology 155 (1994), S. 265-291 
    ISSN: 0022-1694
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Architecture, Civil Engineering, Surveying , Geography , Geosciences
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 37 (1990), S. 0 
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The continuous culturing of Trypanosoma acomys in the presence of a murine areolar-adipose cell line (A9) was possible for the 1st time. The trypanosomes were cultured at 37° C with A9 in DMEM supplemented with 20% heat inactivated fetal bovine serum, using an initial inoculum from primary cultures of lung or blood clots from infected spiny mice. The cultures were maintained for 115 days and underwent 15 passages before termination and cryopreservation. Using this culture system T. acomys subcultures were initiated from 3 different initial inocula (3 × 104, 1.5 × 105 and 7.4 × 105 parasites/ml) and growth curves revealed that the lowest inoculum gave the best growth pattern. This inoculum yielded a population doubling time of less than 12 h for 4 days, a high peak density of 7 × 106 parasites/ml and the most gradual decline compared to the other 2 inocula. Rosetting epimastigotes and nests of amastigotes were observed in close association with the feeder layer cells. Epimastigotes were the most predominant form in culture supernatants but other morphological forms observed included trypomastigotes and sphaeromastigotes.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 34 (1996), S. 0 
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: Boreholes in an interbedded and fractured sandstone/mudstone Karoo aquifer were classified according to their position relative to structural features identified on a photogeologic map. The yields of boreholes located adjacent to dolerite intrusions, or on the limbs of folds where changes in bedding dip occur, were found to be significantly higher than the yields of boreholes located where no structural deformation could be observed. No statistical difference was found between the yields of boreholes located adjacent to faults or along fold axes and those in undeformed sections. No significant correlation exists between yield and saturated depth penetrated, suggesting that borehole productivity is primarily dependent on the permeability of intercepted fractures rather than on borehole depth. Yields from boreholes located in higher order catchments were also considerably greater than yields in first and second order catchments. Yield probability curves have been derived for the different structural features identified. These show that locating boreholes adjacent to dolerite intrusions or changes in bedding dip significantly increases the probability of obtaining a high yielding borehole. The identification of these features from air photos, therefore, provides an economical means of locating boreholes without expensive geophysical surveys.
    Type of Medium: Electronic Resource
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  • 4
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    Unknown
    Detroit, Mich. : Periodicals Archive Online (PAO)
    Technology and Culture. 19:4 (1978:Oct.) 800 
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  • 5
    facet.materialart.
    Unknown
    Oxford : Periodicals Archive Online (PAO)
    Journal of the History of Medicine and Allied Sciences. 38:4 (1983:Oct.) 475 
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  • 6
    facet.materialart.
    Unknown
    Baltimore, Md. : Periodicals Archive Online (PAO)
    Bulletin of the history of medicine. 39 (1965) 309 
    ISSN: 0007-5140
    Topics: History , Medicine
    Description / Table of Contents: The Federal Government and Health Research, 1900-1960: A Symposium
    Notes: AMERICAN ASSOCIATION FOR THE HISTORY OF MEDICINE (Thirty-Seventh Annual Meeting)
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Space science reviews 85 (1998), S. 175-186 
    ISSN: 1572-9672
    Keywords: Solar Abundances ; Solar Granulation ; Solar Magnetic Fields ; Radiative Transfer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The majority of measured solar abundances refer to the solar photosphere. In general, when determining photospheric abundances a plane-parallel atmosphere and LTE are assumed. However, the photosphere is structured by granulation, magnetic fields and p-modes. They change line profiles by the thermal inhomogeneities and wavelength shifts they introduce. A brief description of the first two of these phenomena is given and some of the ways in which they influence abundances are pointed out. Departures from LTE also occur. The magnitude of the errors introduced into elemental abundances by neglecting such departures is also briefly discussed.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1573-093X
    Keywords: Magnetic fields ; active regions ; plage ; sunspots ; flux tubes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Sunspots are known to have large, low-lying magnetic canopies, i.e. horizontal magnetic fields overlying a field-free medium, that cover substantial fractions of active region plage. In this paper we consider the influence of such canopies on the inclination of plage magnetic fields. We find that for observations in spectral lines like 5250.2Å the neglect of a sunspot canopy when determining magnetic inclination angles of plage fields can introduce errors exceeding 5–10°. This is particularly true if the observations do not have high spatial resolution. Thus this effect may explain some of the measurements of substantially inclined fields in solar plages. Furthermore we find that the Fe I 15648 Å line is far superior in giving correct flux-tube inclinations in the presence of a sunspot magnetic canopy. Finally, the inversion of full Stokes profiles is shown to produce more reliable results than results obtained by considering only ratios of individual Stokes profile parameters.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Space science reviews 63 (1993), S. 1-188 
    ISSN: 1572-9672
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An overview is given of the observational and the theoretical methods used to investigate solar magnetic fields. It includes an introduction to the Stokes parameters, their radiative transfer in the presence of a magnetic field, and empirical techniques used to measure various properties of solar magnetic features, such as the strength and direction of the magnetic field, magnetic flux, temperature, velocity, size and lifetime. The MHD equations are introduced and some of the most common simplifications used to describe solar magnetic features are outlined. The application of these techniques to small-scale magnetic features is surveyed. The results of empirical and theoretical investigations of small-scale solar magnetic features are reviewed. Current views on their magnetic structure, thermal stratification, velocity field, size, distribution and evolution are presented. Finally, some open questions concerning small-scale solar magnetic fields are listed.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Parasitology research 80 (1994), S. 664-671 
    ISSN: 1432-1955
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract A total of 2182 serum samples from 38 patients with surgically confirmed unilocular hydatidosis, 19 clinically assessed patients, 15 patients with parasitic infections other than hydatidosis, 104 hospital outpatients, and 2006 normal Jordanians were serodiagnosed for the presence of IgG antibodies against hydatid fluid, circulating immune complexes (CIC), and/or hydatid circulating antigen (CA). Anti-hydatid IgG antibodies were detected in the sera of 77.4% of patients with hydatid discase and persiste for very long periods postsurgery. As many as 54.1% of patients with hydatidosis had positive levels of CIC, and 16.1% had circulating antigen in their sera. The search for circulating antigen and CIC decreased the number of false-negative hydatid cases from seven to three, and the combined sensitivity of the assays thus increased from 77.4% to 90.3%. Using the immunoblot technique, 16- and 〈14.4-kDaEchinococcus granulosus-specific bands were detected in sera from 54.1% and 61.5% of patients with hydatid disease who were tested before and after surgery, respectively. The seropositivity rate for anti-hydatid IgG antibodies was 2.4% for the general Jordanian population and 5.8% for hospital outpatients.
    Type of Medium: Electronic Resource
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