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  • 2000-2004  (232)
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  • 1
    Electronic Resource
    Electronic Resource
    Chloro(methyl)(η5-pentamethylcyclopentadienyl)(trimethylphosphine)rhodium(III) (2001)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. m517-m518 
    Details
    ISSN: 1600-5368
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The title compound, RhCp*Me(Cl)(PMe3) or [RhCl(CH3)(C10H15)(C3H9P)], where Cp* is pentamethylcyclopentadienyl, has a pseudo-tetrahedral coordination geometry. The Cp* ligand is planar and η5-coordinated. The molecular structure can be described as a so-called three-legged piano-stool. The rhodium–methyl, rhodium–chlorine and rhodium–phosphorus distances are 2.255 (4), 2.3764 (18) and 2.2436 (13) Å, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S1600536801016798
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  • 2
    Electronic Resource
    Electronic Resource
    Three-dimensional control of light in a two-dimensional photonic crystal slab (2000)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 407 (2000), S. 983-986 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Optoelectronic devices are increasingly important in communication and information technology. To achieve the necessary manipulation of light (which carries information in optoelectronic devices), considerable efforts are directed at the development of photonic crystals—periodic ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/35039583
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  • 3
    Electronic Resource
    Electronic Resource
    Public health Particulate emission from biomass combustion (2001)
    [s.l.] : Nature Publishing Group
    Nature 409 (2001), S. 998-998 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Mixing dried human sewage sludge with pulverized coal is being evaluated as a way to reduce carbon dioxide emissions from traditionally coal-fired power plants, as well as to overcome sewage-disposal problems. Here we investigate the effects of inhaling particles emitted from the combustion of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/35059169
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  • 4
    Electronic Resource
    Electronic Resource
    Control of ion energy distribution at substrates during plasma processing (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 88 (2000), S. 643-646 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Control of ion energy distribution functions (IEDF) at the substrate during plasma processing is achieved using a specially tailored voltage waveform for substrate bias, consisting of a short voltage spike in combination with a slow ramp. A much narrower IEDF is possible compared to the conventional approach of applying a sinusoidal waveform to the substrate electrode. Measurements in a helicon plasma combined with a time-dependent spherical-shell plasma fluid model demonstrate the benefits of this method in producing a narrow IEDF of precisely controllable energy, independent of ion mass. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.373715
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  • 5
    Electronic Resource
    Electronic Resource
    Passive external radio frequency filter for Langmuir probes (2001)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 72 (2001), S. 2926-2930 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A tunable passive circuit is introduced for radio frequency (rf) filtering of Langmuir probes used to measure plasma properties. The circuit produces a high impedance between the probe tip and ground so that the probe tip follows potential fluctuations in the plasma so that the probe bias voltage with respect to the plasma is constant on the time scale of rf fluctuations. Filtering is implemented at the fundamental frequency (13.56 MHz in this case) and the second and third harmonics. Representative probe traces and electron energy distribution functions from an inductively coupled plasma are presented to demonstrate filter performance. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1376139
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  • 6
    Electronic Resource
    Electronic Resource
    Absolute densities of long lived species in an ionized physical vapor deposition copper–argon plasma (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 88 (2000), S. 3208-3219 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Optical absorption spectroscopy has been used to measure absolute, average gas phase densities of neutral copper, ground and metastable states, and neutral argon, metastable and resonance states, in an ionized physical vapor deposition plasma. Spectroscopic measurements were carried with a xenon arc lamp as a high intensity, continuum light source, and an optical multichannel detector. Copper radiative transitions in the wavelength range of 324.8–510.6 nm and argon radiative transitions in the 706.7–811.5 nm range were employed. The curve of growth method has been used to calculate the absolute line average densities from fractional absorption data. For a copper–argon plasma of neutral pressure 30 and 10 mTorr copper metastable state densities were found to lie in the range of 1010–1012 cm−3. Comparison of these densities with neutral copper densities derived from independent measurements of neutral copper flux at the substrate indicate gas phase temperatures greater than 1500 K under certain experimental conditions. These values of inferred temperatures indicate the copper metastable state density to be significant in comparison with neutral copper ground state densities at 10 and 30 mTorr with radio frequency heating power of 1 kW. The concentrations of argon 4s sublevels of the first excited state were found to be in the range of 4.5×108–1.5×1011 cm−3 for the experimental conditions studied. The ordering of the relative densities of the argon 4s sublevels and the variation of the lumped first excited state with experimental parameters are discussed. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1289219
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  • 7
    Electronic Resource
    Electronic Resource
    Direct current surface plasma source with high emission current density : Papers from the Ninth International Conference on Ion Sources (2002)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 73 (2002), S. 989-991 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A surface plasma source for long-time dc operation with efficient production of negative ions and high emission current density has been designed and tested. Several modifications of the discharge system, beam extraction, cesium supply, and source design have been tested for long-time operation. The emission current density of H− ions has been increased to j=1 A/cm2 in the dc mode of operation with a discharge voltage, Ud=80 V; a discharge current, Id=0.9 A and a discharge power, P=70 W. Corresponding efficiency of the current density production S=j/P=15 A/cm2 kW is much higher than in modern positive ion sources. Source features determining an operational lifetime will be discussed. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1431410
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  • 8
    Electronic Resource
    Electronic Resource
    Crystal structure of the APC10/DOC1 subunit of the human anaphase-promoting complex (2001)
    [s.l.] : Nature Publishing Group
    Nature structural biology 8 (2001), S. 784-788 
    Details
    ISSN: 1072-8368
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] The anaphase-promoting complex (APC), or cyclosome, is a cell cycle-regulated ubiquitin ligase that controls progression through mitosis and the G1 phase of the cell cycle. The APC is composed of at least 11 subunits; no structure has been determined for any of these subunits. The subunit ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nsb0901-784
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  • 9
    Electronic Resource
    Electronic Resource
    On Methods for Improving the Fatigue Performance of the Wrought Magnesium Alloys AZ31 and AZ80 (2003)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 419-422 (Mar. 2003), p. 93-102 
    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/2011/0528/02/06/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.419-422.93.pdf
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  • 10
    Electronic Resource
    Electronic Resource
    Stochastic analysis of different rough surfaces (2004)
    Springer
    The European physical journal 41 (2004), S. 259-277 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. This paper shows in detail the application of a new stochastic approach for the characterization of surface height profiles, which is based on the theory of Markov processes. With this analysis we achieve a characterization of the scale dependent complexity of surface roughness by means of a Fokker-Planck or Langevin equation, providing the complete stochastic information of multiscale joint probabilities. The method is applied to several surfaces with different properties, for the purpose of showing the utility of this method in more detail. In particular we show evidence of the Markov properties, and we estimate the parameters of the Fokker-Planck equation by pure, parameter-free data analysis. The resulting Fokker-Planck equations are verified by numerical reconstruction of the conditional probability density functions. The results are compared with those from the analysis of multi-affine and extended multi-affine scaling properties which is often used for surface topographies. The different surface structures analysed here show in detail the advantages and disadvantages of these methods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epjb/e2004-00317-4
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