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  • 1
    Electronic Resource
    Electronic Resource
    Microwave Detection of A Key Intermediate in the Formation of Atmospheric Sulfuric Acid: The Structure of H20-SO3 (1995)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 99 (1995), S. 501-504 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100002a008
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  • 2
    Electronic Resource
    Electronic Resource
    Microwave and ab Initio Investigation of HF-BF3 (1995)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 117 (1995), S. 12549-12556 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00155a018
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  • 3
    Electronic Resource
    Electronic Resource
    Magnetic Measurement of Plasma Confinement in a Partially Stabilized Linear Pinch (1958)
    [s.l.] : Nature Publishing Group
    Nature 181 (1958), S. 224-225 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE distribution of currents in a linear pinched discharge in deuterium has been measured by the use of small magnetic probes inserted into the plasma1. This report of work performed in mid-1956 describes the current distribution in a discharge which compresses a longitudinal magnetic field ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/181224a0
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  • 4
    Electronic Resource
    Electronic Resource
    Gas-solid structure differences in the donor-acceptor complex (CH3)2HN−SO2 (1996)
    Springer
    Journal of chemical crystallography 26 (1996), S. 533-538 
    Details
    ISSN: 1572-8854
    Keywords: Sulfur dioxide ; dimethylamine ; dative bond ; gas-solid structure difference ; donor — acceptor adduct ; nitrogen — sulfur bond ; Lewis acid-base complex
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The crystal structure of the donor — acceptor adduct (CH3)2HN−SO2 is reported. Crystals of the compound are clear prisms, space group Pna21; at −96°C,a=9.894(1),b=6.051(2),c=16.478(3) Å,D=1.469 g/cm3,V=786.6(5) Å,Z=8. The unit cell contains two crystallographically independent adducts, with N−S bond lengths of 2.015(3) Å and 1.991(3) Å. The average value, 2.00(1) Å is 0.33(4) Å shorter than the 2.34(3) Å value previously determined from microwave spectroscopy of the gas phase species, revealing a large medium effect on the length of the donor — acceptor bond. The structural results are compared with published data for the trimethylamine — SO2 adduct, and discussed in terms of existing experimental and theoretical results for other donor — acceptor systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01668411
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  • 5
    Electronic Resource
    Electronic Resource
    Delayed effect of pinealectomy on hibernation of the golden-mantled ground squirrel (1982)
    Springer
    International journal of biometeorology 26 (1982), S. 311-328 
    Details
    ISSN: 1432-1254
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Notes: Abstract Pinealectomy or radical sham pinealectomy were performed on adult golden-mantled ground squirrels,Spermophilus (=Citellus) lateralis, approximately 1 month prior to the date of normal winter emergence. The first hibernatory period and subsequent active season were not different in either of the operated groups from intact animals. However, although the initiation of the second hibernatory period was not affected in the pinealectomized animals, this group failed to show the progressive increase in the length of heterothermic bouts that is characteristic of normal hibernation. Also, terminal arousal occurred approximately 6 weeks earlier in the second year after pinealectomy. Male squirrels showed a corresponding time compression in their annual gonadal cycle, as was assessed by testicular state. These results suggest that the pineal gland of the golden-mantled ground squirrel is involved in the expression of the annual hibernatory cycle. In the absence of the pineal gland the adult of this species is unable to sustain the normal depth and duration of hibernation in the second over-wintering period following pinealectomy. We have carried out additional experiments with young, laboratory-bornS. lateralis and with field-caught, adultS. richardsonii. The results of these studies also are described in this paper.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02219502
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  • 6
    Electronic Resource
    Electronic Resource
    Neutrons From A Stabilized Toroidal Pinch (1958)
    [s.l.] : Nature Publishing Group
    Nature 181 (1958), S. 231-233 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] HYDROMAGNETIC calculations on idealized models of the pinch have indicated that stability might be attained by a combination of a central axial magnetic field and conducting walls, provided that certain restrictions on compression and SrcpjB2 (p is plasma pressure) are obeyed1-6. The problem is ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/181231a0
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  • 7
    Electronic Resource
    Electronic Resource
    Effect of cimetidine and ranitidine on carbamazepine and sodium valproate pharmacokinetics (1984)
    Springer
    European journal of clinical pharmacology 27 (1984), S. 341-343 
    Details
    ISSN: 1432-1041
    Keywords: cimetidine ; ranitidine ; carbamazepine ; sodium valproate ; pharmacokinetics ; drug metabolism ; inhibition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The pharmacokinetics of a single oral dose (400 mg) of carbamazepine and sodium valproate were compared in peptic ulcer patients before and after four weeks of a therapeutic course of either cimetidine (1 g/day, n=6 subjects) or ranitidine (300 mg/day, n=6 subjects). There was a small (up to 20%) but statistically significant decrease in oral clearance of carbamazepine after cimetidine treatment. A similar fall in sodium valproate clearance in five cimetidine-treated patients was accompanied by a significantly prolonged elimination half-life. No such trends were demonstrated during ranitidine treatment. Since both anticonvulsants are partly metabolized by hepatic mixed function oxidases, an inhibition by cimetidine at this level may be responsible for the observed impairment of clearance. Thus a potentially important clinical interaction may occur in patients taking anticonvulsants and cimetidine concurrently.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00542172
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  • 8
    Electronic Resource
    Electronic Resource
    Experimental Survey of Wetting and Superfluid Onset of 4He on Alkali Metal Surfaces (1998)
    Springer
    Journal of low temperature physics 113 (1998), S. 829-834 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present a survey of the wetting behavior of 4 He on evaporated films of rubidium, potassium and sodium. 4 He wets these surfaces at all temperatures. Off coexistence on rubidium and potassium there is a prewetting transition that is closely coupled with superfluid onset and possibly a surface tricritical point where the prewetting transition and superfluid onset intersect. Sodium has a prewetting critical temperature well below 1 K. Wetting and superfluid onset phase diagrams for 4 He on rubidium and potassium are presented and compared with that of 4 He on cesium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022594604237
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  • 9
    Electronic Resource
    Electronic Resource
    Adsorption of3He on cesium (1997)
    Springer
    Journal of low temperature physics 106 (1997), S. 81-92 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Adsorption isotherms of3He on cesium substrates have been measured in the temperature range from 0.2 K to 1.5 K. At liquid-vapor coexistence3He wets cesium at all temperatures studied. Step-like features are found in the isotherms which are similar to the prewetting transitions of4He on Cs substrates, but the width of these steps is ∼20 times wider for3He than for4He. In the case of3He on Cs, the steps are located at a chemical potential about 0.6 K below liquid-vapor coexistence. If the low temperature behavior is interpreted to be first order prewetting, the prewetting critical point temperature is 0.6±0.1 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02403917
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  • 10
    Electronic Resource
    Electronic Resource
    Skeletal muscle histology and biochemistry of an elite sprinter, the African cheetah (1997)
    Springer
    Journal of comparative physiology 167 (1997), S. 527-535 
    Details
    ISSN: 1432-136X
    Keywords: Key words Cheetah ; Fiber type ; Mitochondrial volume density ; Skeletal muscle ; Sprinting
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract To establish a skeletal muscle profile for elite sprinters, we obtained muscle biopsy samples from the vastus lateralis, gastrocnemius and soleus of African cheetahs (Acinonyx jubatus). Muscle ultrastructure was characterized by the fiber type composition and mitochondrial volume density of each sample. Maximum enzyme activity, myoglobin content and mixed fiber metabolite content were used to assess the major biochemical pathways. The results demonstrate a preponderance of fast-twitch fibers in the locomotor muscles of cheetahs; 83% of the total number of fibers examined in the vastus lateralis and nearly 61% of the gastrocnemius were comprised of fast-twitch fibers. The total mitochondrial volume density of the limb muscles ranged from 2.0 to 3.9% for two wild cheetahs. Enzyme activities reflected the sprinting capability of the cheetah. Maximum activities for pyruvate kinase and lactate dehydrogenase in the vastus lateralis were 1519.00 ± 203.60 and 1929.25±482.35 μmol min−1 · g wet wt−1, respectively, and indicated a high capacity for glycolysis. This study demonstrates that the locomotor muscles of cheetahs are poised for anaerobically based exercise. Fiber type composition, mitochondrial content and glycolytic enzyme capacities in the locomotor muscles of these sprinting cats are at the extreme range of values for other sprinters bred or trained for this activity including greyhounds, thoroughbred horses and elite human athletes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003600050105
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