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  • 1
    Electronic Resource
    Electronic Resource
    Dynamics in the spin-boson model by maximum entropy moment imaging (1998)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 109 (1998), S. 8262-8274 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The spin–spin time correlation function of the spin-boson model is studied using a maximum entropy imaging procedure founded on knowledge of early time derivatives or moments of the corresponding spectral density. The coherent–incoherent boundary is reproduced in agreement with the results of dynamical path-integral Monte Carlo and the procedure is shown to be stable numerically at both long time and low temperature. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.477488
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  • 2
    Electronic Resource
    Electronic Resource
    Calculations of femtosecond differential optical transmission in germanium (1995)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 77 (1995), S. 2107-2115 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Nonequilibrium electron and hole carrier dynamics are calculated for femtosecond photoexcitation in Ge using an ensemble Monte Carlo method. From the carrier distributions and k⋅p band-structure calculations, the time-dependent differential optical transmission that corresponds to pump-probe experiments is determined. It is found that electrons quickly scatter out of the optically coupled region and that the primary electron relaxation channel is from the Γ valley to the X valleys, then to the L valleys. Holes dominate the nonlinear absorption spectra in Ge. It is also found that light holes make a substantial contribution to the initial transient of the differential transmission, particularly for high-energy photoexcitation. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.358786
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  • 3
    Electronic Resource
    Electronic Resource
    Ensemble Monte Carlo simulations of femtosecond thermalization of low-energy photoexcited electrons in GaAs quantum wells (1987)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 62 (1987), S. 4638-4641 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We present results of ensemble Monte Carlo simulations of the room-temperature relaxation of nonthermal photoexcited electrons in GaAs quantum-well structures. Electrons are excited at a mean energy of 20 meV above the band edge, similar to the experiments of Knox et al. [Phys. Rev. Lett. 56, 1191 (1986)] and Oudar et al. [Phys. Rev. Lett. 55, 2075 (1985)]. Since this energy is less than the optical-phonon emission threshold, energy relaxation occurs primarily via carrier-carrier scatterings. We find that the excited electrons thermalize with the background electrons within 200 fs, in agreement with experiment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.339012
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  • 4
    Electronic Resource
    Electronic Resource
    A novel case of metal-metal bond mobility. Structure and fluxional behavior of .mu.-chlorodichlorodicarbonylbis[bis(diphenylphosphinomethyl)phenylarsine]palladiumdirhodium(1+) tetraphenylborate and related compounds (1987)
    s.l. : American Chemical Society
    Inorganic chemistry 26 (1987), S. 2413-2418 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic00262a016
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  • 5
    Electronic Resource
    Electronic Resource
    Two-dimensional ray-trace calculations of thermal whole beam self-focusing (1985)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 28 (1985), S. 19-21 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Thermal self-focusing of laser light may be significant when a plasma is irradiated with short-wavelength laser light. Self-focusing magnifies the light intensity which can increase absorption by plasma waves (producing hot electrons which may cause preheat), could increase scattering, and could be a perturbation source for the Rayleigh–Taylor instability. We use two-dimensional hydrodynamic simulations to characterize thermal self-focusing for parameters of interest to laser fusion applications, and present a simple model. A diverging beam is shown to reduce the self-focusing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.865180
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  • 6
    Electronic Resource
    Electronic Resource
    Referral to Child Psychiatry: Parent and Doctor Motives and Expectations (1989)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of child psychology and psychiatry 30 (1989), S. 0 
    Details
    ISSN: 1469-7610
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: Abstract We studied general practitioner and parental attitudes towards the referral to child psychiatric clinics of 65 children aged 7–12 yrs. The doctors gave parental request and anxiety and the seriousness of the child's condition as the most common reasons for the referral. Their expectations of it were well in line with current psychiatric practice. There was a wide variety of parental motivations in attending the surgery, and the expectations of the referral were similarly diverse, Most prominent though were help for the child and a need to know underlying reasons. Although three-quarters of parents were satisfied with the general practitioner intervention, the majority said that they had not been given information about die psychiatric assessment process, nor knew what to expect from it, and three-quarters of the children were referred after only one consultation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1469-7610.1989.tb00258.x
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  • 7
    Electronic Resource
    Electronic Resource
    CHILDREN WITH PSYCHIATRIC DISORDERS IN PRIMARY CARE (1986)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of child psychology and psychiatry 27 (1986), S. 0 
    Details
    ISSN: 1469-7610
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: Abstract A substantial minority (23%) of children between 7 and 12 years of age attending general practice were found to have psychiatric disorders. Disturbance was slightly more frequent in girls than in boys, and emotional disorder was the most common diagnosis.Psychiatric disorder was associated with psychological disadvantage (broken homes, the child had lived away from the family, family history of psychiatric disorder) and with current high levels of parental stress in relation to their children. Disturbed children tended to present with symptoms of anxiety, bed-wetting, hayfever, nosebleeds or scabies. Amongst a subsample of children consulting in general practice, psychiatric disorder may be a relevant factor contributing to somatic consultation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1469-7610.1986.tb00186.x
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  • 8
    Electronic Resource
    Electronic Resource
    Screening for resistance to canker (Leptosphaeria maculans) in winter oilseed rape (Brassica napus ssp. oleifera) (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 36 (1987), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A test involving infection of seedlings in a glasshouse was evaluated for potential use in screening breeding material by comparing the results with those of field tests. The two tests correlated well for some resistant selections, particularly those closely related to Jet Neuf, and for very susceptible selections. However, two small groups of selections were resistant in the field but consistently susceptible in the glasshouse. Inoculation of mature plants in the glasshouse resulted in similar discrepancies and therefore gave no advantage over the seedling test. These discrepancies limit the usefulness of glasshouse techniques for routine resistance screening. A very high correlation was found overall between internal and external canker symptoms of the crown in nine field trials. Significant differences were found, however, between selections and cultivars in the relative severity of these two symptoms. Upper stem canker and crown canker were found to be very poorly correlated for individual plants, but highly correlated for eultivar means. The significance of these observations is discussed with respect to scoring canker in the field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3059.1987.tb02242.x
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  • 9
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    A Letter of L. Lucceius (1987)
    Leiden, etc. : Periodicals Archive Online (PAO)
    Mnemosyne. ser.4:40:3/4 (1987) 419 
    Details
    ISSN: 0026-7074
    Topics: Classical Studies
    Notes: Miscellanea
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:4137-1987-040-03-000011
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  • 10
    Electronic Resource
    Electronic Resource
    Comparison of areal and estimated volumetric bone mineral density values between older men and women (1995)
    Springer
    Osteoporosis international 5 (1995), S. 271-275 
    Details
    ISSN: 1433-2965
    Keywords: Bone densitometry ; Bone mineral density ; Dual-energy X-ray absorptiometry ; Gender differences ; Osteoporosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We compared areal bone mineral density (BMD) of the total body (TBMD), antero-posterior lumbar spine at L3 (APS), lateral spine at L3 (LS) and femoral neck (FN). In order to understand better the effect of gender-related size differences on BMD, we also compared the estimated volumetric BMD at L3 (VLS) and the femoral neck (VFN). Subjects were asymptomatic women (n=22) and men (n=44) with an age range of 58–79 years. BMD at each site was measured by dual-energy X-ray absorptiometry using a Hologic 2000 in array mode. Results of the statistical analyses (ANOVA) showed the men to have significantly greater BMD at all areal sites [APS, LS (p〈0.05); FN (p〈0.01); TBMD (p〈0.001)]. The two estimated volumetric comparisons, however, showed no gender differences. Results demonstrate how measures from areal BMD measures can be misleading when comparing groups of different size. In older men and women planar measures may overestimate gender differences in BMD.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01774017
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