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  • 1
    Electronic Resource
    Electronic Resource
    137-GHz gyrotron diagnostic for instability studies in Tara (1986)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 57 (1986), S. 1983-1985 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A narrow linewidth (〈100 kHz), 1-kW, 137-GHz gyrotron and an efficient TE03 to TE11 cylindrical waveguide mode converter set (〉97% TE11 mode output) have been built for collective Thomson scattering diagnostics. The main goal will be to study instability driven ion density fluctuations in the Tara plug such as the drift cyclotron loss cone (DCLC), the axial loss cone (ALC), harmonics of the DCLC and ALC, and the ion two-stream instability. The heterodyne receiver and signal optics have been installed on Tara. Background electron cyclotron emission (ECE) at 139±1.5 GHz after electron cyclotron resonance heating (ECRH) in the Tara plug corresponded to equivalent blackbody temperatures of 453 and 70 eV for extraordinary and ordinary emission, respectively. The well-collimated receiver field of view completely through the Tara plug has allowed for excellent polarization discrimination of the ECE. The high-power capability of this gyrotron will allow weak fluctuation levels (ñ/n〈10−6) to be detected above this background during ECRH in the plugs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1138813
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  • 2
    Electronic Resource
    Electronic Resource
    TARA diagnostic set (1985)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 56 (1985), S. 960-962 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The TARA Tandem Mirror Experiment has recently begun operation. The set of diagnostics available at this time is discussed. The following diagnostics are now in use: diamagnetic loops, a multichord microwave interferometer, Langmuir and emissive probes, pick-up loops, and secondary-emission detectors. End-loss diagnostics include net current detector arrays, Faraday cup arrays, swept particle analyzer arrays, and calorimetry. Light-emission measurements are made in the visible and VUV regions. A multichord fiber-optic array for plasma position detection is also used. In addition, a three-channel charge exchange analyzer, a hard x-ray system, and fast pressure gauges are available.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1138005
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  • 3
    Electronic Resource
    Electronic Resource
    Impact of Sodium Ascorbate and Sodium Erythorbate Used in Meat Processing on the Vitamin B12 Contents of Cured Ham (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 54 (1989), 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: Effects of sodium ascorbate (Na ascorbate) and sodium erythorbate (Na erythorbate) on vitamin B]2 content of cured, cooked ham were investigated. Paired hams were injected with cure solution containing no curing accelerators or with cure solution containing Na ascorbate or Na erythorbate (3.28, 6.56, 9.84 g/L). There were no differences between vitamin B12 contents of hams containing added curing accelerators and paired controls, indicating that B12 was not destroyed by either Na ascorbate or Na erythorbate. Analysis of ascorbate, dehy-droascorbate, isoascorbate and dehydroisoascorbate showed ascorbate to be the only substance present in Na ascorbate-treated hams and isoascorbic acid to be the only substance present in Na erythorbate-treated hams.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1989.tb05138.x
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  • 4
    Electronic Resource
    Electronic Resource
    Evidence of the Mechanism of Ouabain Inhibition of Cation Activated Adenosine Triphosphatase (1963)
    [s.l.] : Nature Publishing Group
    Nature 199 (1963), S. 910-911 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We have been able to demonstrate11 that a heavy micro-some sub-fraction of guinea pig kidney cortex sedimented at 40,000g from a tissue homogenate in 0.25 M sucrose and afterwards treated with deoxycholate by a procedure modified from Skou8 contains in high yield a sodium plus potassium-activated ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/199910a0
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  • 5
    Electronic Resource
    Electronic Resource
    Hα laser fluorescence diagnostic on the Tara Tandem Mirror experiment (1988)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 59 (1988), S. 1470-1472 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A laser fluorescence diagnostic has been used for measuring the neutral hydrogen density in the central cell of the Tara thermal barrier tandem mirror. Experiments have been performed using laser-induced, resonance fluorescence detection of Hα (6563-A(ring)) radiation. Measurements were made at a number of radial positions with 1-cm resolution, from the magnetic axis to near the plasma limiter. Stray laser light contributions to the signal were eliminated with a double-pulse technique. For comparison, the chord-averaged plasma Hα radiation was analyzed under the identical conditions for which laser fluorescence data were taken.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1139691
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  • 6
    Electronic Resource
    Electronic Resource
    Gyrotron collective Thomson scattering from plasma fluctuations in a Tara axicell (1988)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 59 (1988), S. 1562-1564 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Collective Thomson scattering in the Tara Tandem Mirror axicell at MIT was accomplished with a 137-GHz, ∼0.4-kW, 75-ms pulsed gyrotron. Ion cyclotron waves, ion Bernstein wave harmonics, and other plasma fluctuations possibly due to microinstabilities and magnetohydrodynamic (MHD) activity have been observed during ion cyclotron resonance frequency (ICRF) heating. The observation of ion Bernstein waves may be due to an enhanced ion thermal fluctuation spectrum in an ICRF heated plasma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1140197
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  • 7
    Electronic Resource
    Electronic Resource
    Multichord interferometer for edge density profiles in Alcator C-Mod (abstract) (1988)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 59 (1988), S. 1591-1591 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The preliminary design of a multichord imaging interferometer system used to measure the density profiles in the scrape-off layer of the Alcator C-Mod tokamak is presented. The system is envisioned to be a two-color vibration compensated double-pass interferometer based on a CO2 laser with λ=10.6 μm; the second color will either use He–Ne emission at 632.8 nm or 3.39 μm, depending on how serious the vibrations are expected to be. A toroidal view of the plasma near the vertical midplane is considered. We present systematic studies of the requirements on fringe resolution and edge density range, from which reasonably accurate profiles can be inferred. Requirements on the spatial resolution, number of detectors, and the possibility of obtaining 2-D images of the edge will be addressed. Longer wavelength alternatives using a FIR laser will also be studied; in this case the main concern is beam refraction caused by the density gradients in the edge region of interest. This work was supported by U. S. DOE Contract No. DE-AC02-78ET51013.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1140154
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  • 8
    Electronic Resource
    Electronic Resource
    Operation of an E (parallel) B end-loss ion spectrometer on the Tara tandem mirror (1988)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 59 (1988), S. 1664-1666 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: An E (parallel) B end-loss ion spectrometer from the Livermore TMX-U tandem mirror experiment was installed on Tara for high-resolution ion spectroscopy. This diagnostic contains parallel electric and magnetic fields, separating the masses and energies of the ions over 128 collector plates. The ion energy distribution nominally yields confining potentials and parallel ion temperatures. Additional experiments have diagnosed the resonance position of the central cell ion cyclotron heating, rf enhanced losses of high-energy sloshing ions in the axicell ("plug''), and observation of MHD instabilities at higher time resolution (20 kHz).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1140126
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  • 9
    Electronic Resource
    Electronic Resource
    Nuclear Fusion (1976)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Environment and Resources 1 (1976), S. 213-255 
    Details
    ISSN: 0362-1626
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.eg.01.110176.001241
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  • 10
    Electronic Resource
    Electronic Resource
    The annual cycle of Simulium erythrocephalum (Diptera: Simuliidae) at a site in Norfolk (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Freshwater biology 13 (1983), S. 0 
    Details
    ISSN: 1365-2427
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SUMMARY. Size frequency distributions of larvae of Simulium erythrocephalum sampled regularly throughout 1978 from the River Tiffey at Carlton Forehoe, Norfolk, revealed five generations per year. The number of larval instars could be determined for the second and fifth generations, being six and seven respectively. Individuals of the overwintering generation were of larger ultimate size, had more ovarioles and apparently laid larger eggs than those of the summer generations. Females were larger than males throughout the year.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2427.1983.tb00687.x
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