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  • 1
    Electronic Resource
    Electronic Resource
    Lack of kinetic interaction between digoxin and voglibose (1999)
    Springer
    European journal of clinical pharmacology 55 (1999), S. 79-80 
    Details
    ISSN: 1432-1041
    Keywords: Key words Digoxin ; Voglibase ; Interaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002280050597
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  • 2
    Electronic Resource
    Electronic Resource
    Work Hardening Behavior of Low Carbon Martensitic Steel (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 345-346 (Aug. 2007), p. 189-192 
    Details
    ISSN: 1013-9826
    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
    Notes: The work hardening behavior by cold rolling was investigated in ultralow carbon and lowcarbon martensitic steels containing 12%Cr or 18%Ni, and then the effect of carbon on the workhardening behavior was discussed in terms of the change in dislocation density and the microstructuredevelopment during deformation. In the ultralow carbon steel, the hardness is almost constantirrespective of the reduction ratio. On the other hand, the low carbon steel exhibits marked workhardening. The dislocation density of these specimens was confirmed to be never increased by coldrolling. It was also found that cold rolling gives no significant influence on the morphology ofmartensite packet and block structure. TEM images of the cold-rolled steels revealed that themartensite laths in the ultralow carbon steel are partially vanished, while those in the carbon bearingsteel are stably remained. These results indicate that the solute carbon retards the movement ofdislocations, which results in the high work hardening rate through the formation of fine dislocationsubstructure within laths
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.345-346.189.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    Effect of Carbon on Work Hardening Behavior of 18%Ni Martensitic Steel (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 539-543 (Mar. 2007), p. 4783-4788 
    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
    Notes: The behavior of work hardening by cold rolling and tensile deformation was investigatedin an ultralow carbon and carbon bearing martensitic steels, and then the effect of carbon on thework hardening behavior was discussed in terms of the change in dislocation density and themicrostructure development during deformation. In the ultralow carbon 18%Ni steel (20ppmC), thehardness is almost constant irrespective of the reduction ratio. On the other hand, the carbon bearing18%Ni steel (890ppmC) exhibits marked work hardening. The dislocation density of thesespecimens was confirmed to be never increased by cold rolling. It was also found that 10% coldrolling gives no significant influence on the morphology of martensite packet and block structure.TEM images of the 10% cold-rolled steels revealed that the martensite laths in the ultralow carbonsteel are partially vanished, while those in the carbon bearing steel are stably remained. Theseresults indicate that the solute carbon retards the movement of dislocations, which results in thehigh work hardening rate through the formation of fine dislocation substructure within laths
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.4783.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of Dislocation Distribution on the Yielding of Highly Dislocated Iron (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 539-543 (Mar. 2007), p. 228-233 
    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
    Notes: Yield strength of highly dislocated metals is known to be directly proportional to thesquare root of dislocation density (ρ), so called Bailey-Hirsch relationship. In general, themicrostructure of heavily cold worked iron is characterized by cellar tangled dislocations. On theother hand, the dislocation substructure of martensite is characterized by randomly distributeddislocations although it has almost same or higher dislocation density in comparison with heavilycold worked iron. In this paper, yielding behavior of ultra low carbon martensite (Fe-18%Ni alloy)was discussed in connection with microstructural change during cold working. Originally, theelastic proportional limit and 0.2% proof stress is low in as-quenched martensite in spite of its highdislocation density. Small amount of cold rolling results in the decrease of dislocation density from6.8x1015/m-2 to 3.4x1015/m-2 but both the elastic proportional limit and 0.2% proof stress aremarkedly increased by contraries. 0.2% proof stress of cold-rolled martensite could be plotted onthe extended line of the Bailey-Hirsch equation obtained in cold-rolled iron. It was also confirmedthat small amount of cold rolling causes a clear microstructural change from randomly distributeddislocations to cellar tangled dislocations. Martensite contains two types of dislocations;statistically stored dislocation (SS-dislocation) and geometrically necessary dislocation(GN-dislocation). In the early deformation stage, SS-dislocations easily disappear through thedislocation interaction and movement to grain boundaries or surface. This process produces aplastic strain and lowers the elastic proportional limit and 0.2% proof stress in the ultra low carbonmartensite
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.228.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Renormalization effects of bath-induced vibronic population transfer on stationary and time-resolved resonant light scattering spectra from molecules (1990)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 93 (1990), S. 126-135 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Renormalization effects of the bath-induced vibronic population transfer on resonant light scattering (RLS) from molecules in condensed phases are theoretically studied based on the Markoffian master equation approach. By using the double space diagram technique, the self-energy originated from the bath-induced vibronic population transfer is analytically solved, and the analytic expressions for the intensities both of the stationary and of the time-resolved RLS spectra are derived. The renormalization effect is analyzed in terms of dimensionless molecular parameters, and model calculations are also performed to confirm theoretical results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.459720
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  • 6
    Electronic Resource
    Electronic Resource
    Theory of multiphoton processes by the Fourier-expansion density matrix method (1990)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 92 (1990), S. 2910-2916 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The Fourier-expansion density matrix method is developed to describe the multiphoton processes of molecules interacting with the heat bath under the strong laser light. This method is applied to deriving expressions for the absorption spectra in the case in which a single-mode laser interacts with the molecular system of a three-level taking into account the dynamic Stark effect. Model calculations are performed to demonstrate the dynamic Stark effects on the absorption ability in the three-level system, and compared with the results of the weak laser light case. The calculated band shapes of the two-photon absorption are analyzed in terms of the simultaneous and sequential mechanisms. The sequential mechanism is characterized by bath-induced intramolecular transitions. As the laser intensity is increased the simultaneous mechanism makes a dominant contribution with increased dynamic Stark effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.457938
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  • 7
    Electronic Resource
    Electronic Resource
    Theory of resonance secondary emission in femtosecond laser excitation: On the connection with wave packet dynamics (1989)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 91 (1989), S. 5960-5973 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The resonance secondary emission (RSE) in femtosecond laser excitation is discussed in reference to the motion of the created wave packet moving on the excited state potential surface. The density matrix of emitted light for the multi-intermediate-level system is outlined, from which the emission correlation function is derived. The correlation function is put into the theoretical expression of the time-dependent "physical spectrum'' for the Fabry–Perot interferometer (which is used in order to consider temporal and energetic resolution inherent in detection). The compact and practical expressions obtained connect the time- and frequency-resolved spectrum with the time evolution of the wave packet. Numerical results for a displaced harmonic oscillator model indicate that the time- and frequency-resolved spectrum can reveal how the wave packet created by a fs laser pulse travels on the excited potential surface if the response time 1/Γd of the photodetector satisfies the relation that Ω〈Γd 〈∼ the Stokes shift (where Ω is the vibrational frequency). It is shown that the excited state wave function can be split into two terms, the one that adiabatically follows the temporal change in incident light (the adiabatic term) and the one that represents the effect of spectral broadening of light (the Fourier broadening term). It is only the Fourier broadening term that survives after the termination of incident light and reflects the motion of the created wave packet on the excited potential surface. In off-resonance excitation, the adiabatic term produces Raman-like emission and the Fourier broadening one produces fluorescence-like emission. In resonance excitation, these two terms are indistinguishable from each other with respect to emission frequency: for the duration of incident light, the adiabatic term offsets the Fourier broadening one, leading to a slow buildup of intensity in the time- and frequency-resolved spectrum (which is slower than the initial rise of the incident pulse profile).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.457414
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  • 8
    Electronic Resource
    Electronic Resource
    Theory of quantum beats in time-resolved multiphoton ionization of molecules (1988)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 88 (1988), S. 1501-1510 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: An expression for the probability of time-resolved three-photon ionization via coherently excited resonant states of a molecular system is derived in the perturbative density matrix formalism with the aid of the Liouville space Feynman diagram. It is shown how the time evolution of the molecular coherence in the first resonant state can be detected as a function of the delay time between the pumping and probing lasers through the probing two-photon ionization process. The three-photon ionization process consists of the simultaneous and sequential processes which are classified by the Liouville space Feynman diagrams. The possibility of appearance of quantum beats in the pump–probe three-photon ionization is discussed by performing model calculations of the probability of ionization. The role of the direct and redistributed processes is discussed. The redistributed process is induced by intramolecular processes in the resonant state. The theoretical treatment is applied to the (1+2) three-photon ionization of pyrazine observed by Knee et al. It is demonstrated that the fast decay component (110 ps) of the pyrazine spectra originates from the intramolecular dephasing of the vibronic coherence created by the pumping pulse laser, and this component appears only when the redistributed process (the ionization process through triplet levels) is absent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.454128
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  • 9
    Electronic Resource
    Electronic Resource
    Band structure of stationary emission spectra from a three-level molecule pumped by strong radiation fields (1990)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 93 (1990), S. 3012-3032 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A theory of the emission spectrum from a multilevel molecular system pumped by strong resonant radiation fields based on the double space theory of the density matrix is developed. We are especially concerned with a three-level, one-laser system, and a three-level, two-laser system. It is shown that the band structure cannot always be estimated by the energy level structure of the dressed states. In fact, in both model systems, triplet structures of the emission spectra can be observed in the case where the magnitude of the molecule-field interaction is larger than that of the detuning. The characteristic features of the band structure are interpreted in terms of the dressed state picture based on analytically solvable models. Several numerical calculations are performed to show how the multiplet band structure in the emission spectrum is influenced by the detuning and the power of the pump field(s).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.458888
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  • 10
    Electronic Resource
    Electronic Resource
    Bath-induced vibronic coherence transfer effects on femtosecond time-resolved resonant light scattering spectra from molecules (1989)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 91 (1989), S. 3903-3915 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Effects of vibronic coherence transfer induced by the heat bath on ultrafast time-resolved resonant light scattering (RLS) spectra are theoretically investigated within the master equation approach. The vibronic coherence initially created by a coherent optical excitation transfers to other vibronic coherent states due to inelastic interactions between the vibronic system concerned (the relevant system) and the heat bath. The vibronic coherence transfer results in the quantum beats in the time-resolved RLS spectra. The bath-induced vibronic transition operator is derived in the double space representation of the density matrix theory. Model calculations of the femtosecond (fs) time-resolved RLS spectra are performed to demonstrate the effects of the bath-induced vibronic coherence transfer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.456822
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