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  • 11
    Electronic Resource
    Electronic Resource
    Dynamical stability and thermodynamic stability in irreversible thermodynamics (1991)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 32 (1991), S. 744-748 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: By constructing a nonlinear model, the relationship between thermodynamic stability and dynamical stability in classical irreversible thermodynamics is investigated. It will be proven that the thermodynamic equilibrium state is thermodynamically stable if it is dynamically asymptotically stable.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.529365
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  • 12
    Electronic Resource
    Electronic Resource
    Distribution of Nb and Co in an α-Fe/Nd2Fe14B-type nanocomposite (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 88 (2000), S. 6928-6930 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Atom probe field ion microscopy was employed to investigate the distribution of the alloying elements in a nanocrystalline Fe76.5Nd8Co8B6Nb1.5 (at. %) alloy consisting of soft magnetic α-Fe and hard magnetic Nd2Fe14B. It was found that Co atoms prefer to partition into Nd2Fe14B phase. The partitioning factor of Co in the hard magnetic phase is approximately 2 with respect to the soft magnetic phase, α-Fe. Atom probe concentration and integrated depth profiles showed that the Nb atoms segregate at the interfaces between the soft and the hard magnetic phases. Based on the atom probe results, the beneficial effects of Nb and Co on the microstructure and the hard magnetic properties of the nanocomposite are discussed. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1317235
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  • 13
    Electronic Resource
    Electronic Resource
    New applications of arc discharge source : Proceedings of 5th international conference on ion sources (1994)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 65 (1994), S. 1340-1341 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We describe some details of the production of 57Fe and C60 ions by the Nielsen source. Some application results are also given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1145004
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  • 14
    Electronic Resource
    Electronic Resource
    An efficient gene transduction system for studying gene function in primary human dermal fibroblasts and epidermal keratinocytes (2003)
    Oxford, UK : Blackwell Science Ltd
    Clinical and experimental dermatology 28 (2003), S. 0 
    Details
    ISSN: 1365-2230
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary One of the critical challenges for cellular genetic studies in primary human skin cells is lack of a gene delivery system that provides efficient transduction and sustained expression of the transgenes. Due to the limited time of survival in culture, the processes of drug selection and clonal expansion for establishing gene stably expressing cell lines are not a realistic option for primary skin cells. We have examined various gene transduction techniques in primary dermal fibroblasts and epidermal keratinocytes of human skin. We report here that vectors based on the human immunodeficiency virus (HIV, lentivirus) offer more than 90% gene transduction efficiency and sustained expression of transgenes in both human skin cell types. In contrast, most of the commonly used techniques have at best 30% transduction efficiency in these cells. Using two previously reported migration control genes, protein kinase Cδ and p38α-MAPK, as examples, we provide evidence that the unprecedented efficiency of the lentiviral system enables a clear detection of the genes' dominant negative effects, which are otherwise greatly compromised by ordinary transfection techniques. We believe that a wide application of this gene transduction system will greatly benefit studies of gene function in human skin cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2230.2003.01191.x
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  • 15
    Electronic Resource
    Electronic Resource
    Valence isomerization of quadricyclane catalyzed by bis(.mu.-acetato)-bis(norbornadiene)dirhodium: evidence for a rhodocyclobutane intermediate (1979)
    s.l. : American Chemical Society
    Inorganic chemistry 18 (1979), S. 1864-1869 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic50197a030
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  • 16
    Electronic Resource
    Electronic Resource
    The Synthesis of Fluorine-containing Olefins (1953)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 75 (1953), S. 2324-2326 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01106a011
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  • 17
    Electronic Resource
    Electronic Resource
    Physicochemical Studies of Alpha and Beta Eleostearic Acids. I. Molar Refractivity and Parachor (1939)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 61 (1939), S. 2283-2284 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01878a005
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  • 18
    Electronic Resource
    Electronic Resource
    Microwave magnetic envelope solitons: Threshold powers and soliton numbers (abstract) : 38th Annual Conference on Magnetism and Magnetic Materials (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 75 (1994), S. 5629-5629 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Microwave envelope solitons may be generated in thin yttrium iron garnet (YIG) films by microwave pulses if the input power is above some threshold power Pth. Above Pth, single solitons or multiple solitons may be generated. De Gasperis and co-workers have examined Pth versus input microwave pulse length τ without regard to the number of solitons actually generated.1 Kalinikos and co-workers have extracted a soliton number from actual profiles.2 Collectively, these works demonstrate that both the number of solitons and the threshold power for the generation of those solitons depends on τ. In this work, Pth vs τ data are analyzed to obtain a soliton number index N. This index has a quantitative basis in soliton theory and represents a significant improvement over a qualitative profile based determination. Measurements were made on a 7.2 μm YIG film in a microstrip delay line structure. Microwave pulses 5–50 ns wide and at a carrier frequency of 5.78 GHz were used to generate backward volume wave solitons. Deviations from a linear response of the measured peak output power were observed above some Pth for each τ value. Plots of Pth vs 1/τ2 show three linear regimes that correspond to three distinct values of N, N=1 for 5 ns〈τ〈10 ns, N=2 for 20 ns〈τ〈30 ns, and N=3–4 for 30 ns〈τ〈50 ns. Even when experimental conditions mask the number of distinguishable peaks in a given profile, the threshold power may be used to determine the number of solitons present.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.355664
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  • 19
    Electronic Resource
    Electronic Resource
    Forward volume wave microwave envelope solitons in yttrium iron garnet thin films: Peak profiles and multisoliton signatures (abstract) : 38th Annual Conference on Magnetism and Magnetic Materials (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 75 (1994), S. 5628-5628 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Microwave envelope solitons have been observed in yttrium iron garnet (YIG) films for different field configurations and surface pinning conditions. Earlier work on magnetostatic forward volume wave (MSFVW) solitons in YIG films has focused on the break from the low power linear dependence of the output pulse peak power Pout on input pulse power Pin,1 or on the evolution of the shape of the microwave pulse envelope with increasing power.2 In this work, both (1) the nonlinear dependence of Pout on Pin and (2) the shape of the output pulses for MSFVW solitons have been examined over a wide range of power levels and pulse widths. The experiments used 7.2-μm-thick single crystal YIG films with unpinned surface spins. A field of 3744 Oe was applied perpendicular to the plane of a 15×2 mm film sample. Microwave pulses at 5.4–6 GHz, with a width τ of 5–50 ns and peak powers up to 3 W, were launched by a microstrip antenna about 5 mm from one end and picked up by a second, parallel antenna about 5 mm from the other end. Data were processed with a microwave transition analyzer operated in a time domain mode. For a given pulse width, the initial break and nonlinear increase in Pout relative to Pin noted in Ref. 1 is followed by a gradual leveling off in Pout at high power. For a given pulse power above soliton threshold, the Pout versus τ profiles show an initial linear increase which is followed by a decrease and an oscillatory response as multiple solitons are formed. These profiles are directly correlated with the formation of a single soliton pulse which evolves into multiple soliton wave packets with increasing either power or pulse length.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.355663
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  • 20
    Electronic Resource
    Electronic Resource
    Room-temperature midwavelength two-color infrared detectors with HgCdTe/CdTe multilayer structures by metal-organic chemical-vapor deposition (1995)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 78 (1995), S. 4787-4789 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Two-color photoconductive detectors in the 3–5 μm wavelength range using multilayer undoped n-type Hg1−xCdxTe heterostructures have been demonstrated at room temperature. These heterostructures, consisting of three or four Hg1−xCdxTe layers separated with CdTe layers, were grown by the metal-organic chemical-vapor-deposition (MOCVD) technique. The quality of MOCVD films was verified by near-theoretical values of the minority-carrier lifetime at 300 K, ranging from 0.8 to 4.7 μs depending on the x value. The Hg1−xCdxTe layers are either detectors or filters, and the CdTe layers serve as insulating separators. The concept of using the exponential absorption tails of two Hg1−xCdxTe layers with different band gaps to form an absorption band was verified by the difference in the photoconductive spectral responses between backside and frontside illumination. Two different multilayer heterostructures with two-color peaks at 3.2/3.8 μm and 3.7/4.6 μm, respectively, were studied. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.359759
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