839 research outputs found

    Effektivität des Integrierten Psychologischen Therapieprogramms für schizophren Erkrankte: Eine Metaanalyse über 28 unabhängige Studien

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    Zusammenfassung: Während der letzten 24Jahre führten Arbeitsgruppen aus 8Ländern 28 unabhängige Evaluationsstudien zum Integrierten Psychologischen Therapieprogramm (IPT) mit insgesamt 1329 schizophren Erkrankten durch. Zur Überprüfung der Wirksamkeit des IPT unter verschiedenen Versorgungsbedingungen wurden die inferenzstatistischen Ergebnisse sämtlicher Studien in Effektstärken transformiert. Die IPT-Gruppen zeigen einen signifikant höheren mittleren Therapieeffekt gegenüber den Kontrollgruppen (Plazebo-Attention-Bedingungen; Standardbehandlung). Die Überlegenheit der IPT-Gruppen nimmt im Verlauf einer durchschnittlichen Katamnesedauer von 8,1 Monaten weiter zu. Vergleichbar hohe Effekte lassen sich für die IPT-Gruppen sowohl in verschiedenen Funktionsbereichen (kognitive Fähigkeiten, Sozialverhalten, Psychopathologie) als auch mit unterschiedlichen Erhebungsformaten (psychologische Tests, standardisierte Selbst- und Fremdratings) nachweisen. Die Ergebnisse belegen weiter, dass Patienten unabhängig von Krankheits-, Rehabilitationsstatus und Therapiesetting vom IPT profitieren. Alle Ergebnisse sind mittels einer Selektion von qualitativ hochstehenden Studien validiert. Zusammenfassend unterstützen damit die Ergebnisse die Evidenz des IPT als einen "empirisch validierten Treatmentansatz" im Sinne der APA-Richtlinie

    Uniform data system standardizes technical computations and the purchasing of commercially important gases

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    Integrated tables of pressure, volume, and temperature for the saturated liquid, from the triple point to the critical point of the gases, have been developed. Tables include definition of saturated liquid curve. Values are presented in metric and practical units. Advantages of the new tables are discussed

    Isochoric thermal conductivity of solid nitrogen

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    The isochoric thermal conductivity of solid nitrogen has been investigated on four samples of different densities in the temperature interval from 20 K to the onset of melting. In alfa-N2 the isochoric thermal conductivity exhibits a dependence weaker than 1/T; in beta-N2 it increases slightly with temperature. The experimental results are discussed within a model in which the heat is transported by low-frequency phonons or by "diffusive" modes above the mobility boundary. The growth of the thermal conductivity in beta-N2 is attributed to the decreasing "rotational" component of the total thermal resistance, which occurs as the rotational correlations between the neighboring molecules become weaker.Comment: Postscript 12 pages, 3 figures, 1 table. To be published in 200

    Fermions and Disorder in Ising and Related Models in Two Dimensions

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    The aspects of phase transitions in the two-dimensional Ising models modified by quenched and annealed site disorder are discussed in the framework of fermionic approach based on the reformulation of the problem in terms of integrals with anticommuting Grassmann variables.Comment: 11 pages, 1 table, no figures. The discussion is merely based on a talk given at the International Bogoliubov Conference on Problems of Theoretical and Mathematical Physics, MIRAS--JINR, Moscow--Dubna, Russia, August 21--27, 200

    Transport Properties of the One Dimensional Ferromagnetic Kondo Lattice Model : A Qualitative Approach to Oxide Manganites

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    The transport properties of the ferromagnetic Kondo lattice model in one dimension are studied via bosonization methods. The antiferromagnetic fluctuations, which normally appear because of the RKKY interactions, are explicitly taken into account as a direct exchange between the ``core'' spins. It is shown that in the paramagnetic regime with the local antiferromagnetic fluctuations, the resistivity decays exponentially as the temperature increases while in the ferromagnetic regime the system is an almost perfect conductor. %A non-perturbative description of localized spin polarons %in the paramagnetic region is obtained. The effect of a weak applied field is discussed to be reduced to the case of the ferromagnetic state leading to band splitting. The qualitative relevance of the results for the problem of the Oxide Manganites is emphasized.Comment: 4 pages, REVTe

    Heart failure following cancer treatment: characteristics, survival and mortality of a linked health data analysis

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    Background: Cardiotoxicity resulting in heart failure is a devastating complication of cancer therapy. A patient may survive cancer only to develop heart failure (HF), which has a higher mortality rate than some cancers. Aim: This study aimed to describe the characteristics and outcomes of HF in patients with blood or breast cancer after chemotherapy treatment. Methods: Queensland Cancer Registry, Death Registry and Hospital Administration records were linked (1996–2009). Patients were categorised as those with an index HF admission (that occurred after cancer diagnosis) and those without an index HF admission (non-HF). Results: A total of 15 987 patients was included, and 1062 (6.6%) had an index HF admission. Median age of HF patients was 67 years (interquartile range 58–75) versus 54 years (interquartile range 44–64) for non-HF patients. More men than women developed HF (48.6% vs 29.5%), and a greater proportion in the HF group had haematological cancer (83.1%) compared with breast cancer (16.9%). After covariate adjustment, HF patients had increased mortality risk compared with non-HF patients (hazard ratios 1.67 (95% confidence interval, 1.54–1.81)), and 47% of the index HF admission occurred within 1 year from cancer diagnosis and 70% within 3 years. Conclusion: Cancer treatment may place patients at a greater risk of developing HF. The onset of HF occurred soon after chemotherapy, and those who developed HF had a greater mortality risk

    Estimation of the charge carrier localization length from Gaussian fluctuations in the magneto-thermopower of La_{0.6}Y_{0.1}Ca_{0.3}MnO_3

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    The magneto-thermoelectric power (TEP) ΔS(T,H)\Delta S(T,H) of perovskite type manganise oxide La0.6Y0.1Ca0.3MnO3La_{0.6}Y_{0.1}Ca_{0.3}MnO_3 is found to exhibit a sharp peak at some temperature T=170KT^{*}=170K. By approximating the true shape of the measured magneto-TEP in the vicinity of TT^{*} by a linear triangle of the form ΔS(T,H)Sp(H)±B±(H)(TT)\Delta S(T,H)\simeq S_p(H)\pm B^{\pm}(H)(T^{*}-T), we observe that B(H)2B+(H)B ^{-}(H)\simeq 2B ^{+}(H). We adopt the electron localization scenario and introduce a Ginzburg-Landau (GL) type theory which incorporates the two concurrent phase transitions, viz., the paramagnetic-ferromagnetic transition at the Curie point TCT_C and the "metal-insulator" (M-I) transition at TMIT_{MI}. The latter is characterized by the divergence of the field-dependent charge carrier localization length ξ(T,H)\xi (T,H) at some characteristic field H0H_0. Calculating the average and fluctuation contributions to the total magnetization and the transport entropy related magneto-TEP ΔS(T,H)\Delta S(T,H) within the GL theory, we obtain a simple relationship between TT^{*} and the above two critical temperatures (TCT_{C} and TMIT_{MI}). The observed slope ratio B(H)/B+(H)B ^{-}(H)/B ^{+}(H) is found to be governed by the competition between the electron-spin exchange JSJS and the induced magnetic energy MsH0M_sH_0. The comparison of our data with the model predictions produce TC=195KT_{C}=195K, JS=40meVJS=40meV, M0=0.4MsM_0=0.4M_s, ξ0=10A˚\xi_0=10\AA, and ne/ni=2/3n_e/n_i=2/3 for the estimates of the Curie temperature, the exchange coupling constant, the critical magnetization, the localization length, and the free-to-localized carrier number density ratio, respectively.Comment: 6 pages (REVTEX), 2 PS figures (epsf.sty); submitted to Phys.Rev.

    Scalar-field Pressure in Induced Gravity with Higgs Potential and Dark Matter

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    A model of induced gravity with a Higgs potential is investigated in detail in view of the pressure components related to the scalar-field excitations. The physical consequences emerging as an artifact due to the presence of these pressure terms are analysed in terms of the constraints parting from energy density, solar-relativistic effects and galactic dynamics along with the dark matter halos.Comment: 26 pages, 3 figures, Minor revision, Published in JHE

    Effect of high-temperature annealing on the residual strain and bending of freestanding GaN films grown by hydride vapor phase epitaxy

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    The effect of high-temperature high-pressure annealing on the residual strain, bending, and point defect redistribution of freestanding hydride vapor phase epitaxial GaN films was studied. The bending was found to be determined by the difference in the in-plane lattice parameters in the two faces of the films. The results showed a tendency of equalizing the lattice parameters in the two faces with increasing annealing temperature, leading to uniform strain distribution across the film thickness. A nonmonotonic behavior of structural parameters with increasing annealing temperature was revealed and related to the change in the point defect content under the high-temperature treatment.Peer reviewe
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