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  • 2000-2004  (2)
  • 1985-1989  (12)
  • 1975-1979  (12)
  • 1
    Digitale Medien
    Digitale Medien
    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
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.339012
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  • 2
    Digitale Medien
    Digitale Medien
    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
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ic00262a016
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  • 3
    Digitale Medien
    Digitale Medien
    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
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.865180
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  • 4
    Digitale Medien
    Digitale Medien
    Functional Polymers. 4. Polymers of 2,4-Dihydroxy-4'-vinylbenzophenone, New Polymeric Ultraviolet Absorbers (1978)
    s.l. : American Chemical Society
    Macromolecules 11 (1978), S. 312-320 
    Details
    ISSN: 1520-5835
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie , Physik
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ma60062a006
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  • 5
    Digitale Medien
    Digitale Medien
    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
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin , Psychologie
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1469-7610.1989.tb00258.x
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  • 6
    Digitale Medien
    Digitale Medien
    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
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin , Psychologie
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1469-7610.1986.tb00186.x
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  • 7
    Digitale Medien
    Digitale Medien
    THE BUSINESS OF ACCOUNTING: EAST AND WEST (1975)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of management studies 12 (1975), S. 0 
    Details
    ISSN: 1467-6486
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Wirtschaftswissenschaften
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1467-6486.1975.tb00885.x
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  • 8
    Digitale Medien
    Digitale Medien
    Notes on Seneca's Quaestiones Naturales (1979)
    Cambridge : Cambridge University Press
    The @classical quarterly 29 (1979), S. 448-456 
    Details
    ISSN: 0009-8388
    Quelle: Cambridge Journals Digital Archives
    Thema: Klassische Philologie, Byzantinistik, Mittellateinische und Neugriechische Philologie, Neulatein
    Notizen: ‘In spite of the efforts of scholars to improve matters, the condition of Seneca's text remains in many places most uncertain or quite irrecoverable. Again and again one has to be content with conjectures which, while often giving the general sense of a passage, must not be taken as certainly Seneca's words’ (Corcoran).1. praef. 5 o quam contempta res est homo, nisi supra humana surrexerit! quam diu cum affectibus colluctamur, quid magnifici facimus, etiam si superiores sumus? portenta vincimus: quid est cur suspiciamus nosmet ipsos, quia dissimiles deterrimis sumus? Traditional punctuation: ‘... quid magnifici facimus? etiam si superiores sumus, portenta vincimus’
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1017/S0009838800036053
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  • 9
    Digitale Medien
    Digitale Medien
    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
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-3059.1987.tb02242.x
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  • 10
    Digitale Medien
    Digitale Medien
    Adenomatous colonic polyps are rare in ulcerative colitis (2004)
    Oxford, UK : Blackwell Science Ltd
    Alimentary pharmacology & therapeutics 19 (2004), S. 0 
    Details
    ISSN: 1365-2036
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Background : Uncertainty exists as to whether dysplastic polyps in ulcerative colitis should always be managed as dysplasia-associated lesions/masses requiring colectomy, or whether some can be managed by polypectomy. The prevalence of non-inflammatory polyps in ulcerative colitis is unknown.Aim : To compare dysplastic polyp occurrence in patients with ulcerative colitis and in patients without inflammatory bowel disease.Methods : The clinical, endoscopic and histological records of 150 ulcerative colitis patients (median disease duration, 10 years; 57% with pancolitis) undergoing colonoscopy were scrutinized for any polyp history. Two hundred and five patients undergoing colonoscopy for altered bowel habit, but without features suggestive of polyp presence, were used as a control group. Immunohistochemical staining of flat and polypoid mucosa for p16, β-catenin, p53 and cyclo-oxygenase-2 was compared in the two groups.Results : Only six (4%) ulcerative colitis patients had ever had dysplastic polyps. Two had single adenomatous polyps proximal to the colitis segment. Of the four patients with dysplastic polyps within colitic mucosa, two were treated endoscopically, but in two the lesions were considered to be dysplasia-associated lesions/masses and colectomy was advised. In contrast, 24 controls had at least one adenomatous polyp (χ2 = 6.7, P 〈 0.01). Ten (6.7%) ulcerative colitis patients and 24 (12%) control patients had metaplastic polyps (N.S.). Immunohistochemical staining was not discriminatory.Conclusion : Despite the increased cancer risk in long-standing ulcerative colitis, adenomatous polyps arise less frequently in ulcerative colitis patients than in patients without ulcerative colitis.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2036.2004.01914.x
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