Cognitive complexity and cognitive-affective integration: Related or separate domains of adult development?

This study used a latent variable approach to describe two broad domains of adult development and their interrelations. One domain was cognitive complexity, defined by crystallized intelligence, fluid intelligence, and reflective cognition; the other domain was cognitive-affective integration, operationalized in terms of integrated and defensive coping. It was hypothesized that these 2 domains are related to each other and that they imply different developmental correlates. Structural relations among the latent variables supported a model in which integrated coping showed positive relations with crystallized intelligence and reflective cognition, whereas defensive coping showed negative relations to these cognitive factors. Age and education were significant predictors of the cognitive complexity factors, whereas evaluations of the climate in one's current family and family of origin were related to the factors of cognitive-affective integration. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Structure of Duplex Multilayer Pb(Zr0.53Ti0.47)O3> Films Prepared by Sol-Gel Processing

Multilayer PZT films were prepared by sol-gel processing, and their structure and composition were investigated by cross-sectional TEM and EDX analyses. The films made by firing at 600°C (as-deposited films) are composed of alternating porous and dense layers, and the porosity increases by a factor of 2 through heating at 750°C. The pyrochlore phase observed in the as-deposited films turns to the perovskite phase by the heat treatment at 750°C. The Ti/Zr ratio along the film stacking direction is shown to change with the elevation of heat treatment temperature. The porous soft layers are considered to reduce the thermal stress and prevent the introduction of cracks during the firing process.     

Membrane-type-1 matrix metalloproteinase is abundantly expressed in fibroblasts and osteoclasts at the bone-implant interface of aseptically loosened joint arthroplasties in situ

OBJECTIVE: To investigate the distribution pattern of membrane-type-1 matrix metalloproteinase (MT1-MMP) within the synovial-like interface membranes of failed prosthetic joints. METHODS: Interface tissue around loose arthroplasties containing both fibrous membrane and attached bone was obtained from 6 patients at revision surgery. In situ hybridization with digoxigenin labeled RNA probes was applied to investigate MT1-MMP expression in paraffin sections of the samples. In addition, double labeling using immunohistochemistry was performed to characterize MT1-MMP producing cells. RESULTS: Apart from being present in fibroblasts, MT1-MMP was also found expressed in osteoclasts at sites of bone resorption. Our results revealed no expression of MT1-MMP at parts of the membrane that originally had been located next to the prosthesis. In contrast, abundant staining for MT1-MMP was observed at sites attached to bone. MT1-MMP mRNA expression was more intense at those sites of bone resorption covered by a thicker interface membrane. CONCLUSION: These results indicate a role for MT1-MMP not only in matrix degradation by fibroblasts but also in osteoclast mediated bone resorption. Given the ability of MT1-MMP to activate MMP2 and MMP13, they suggest also that osteoclasts might contribute to matrix degradation by activating these MMP. This could be of potential interest not only for other conditions in which bone resorption by fibroproliferative tissue plays a role, but also to design novel strategies to prevent loosening of prosthetic joints.     

Numerische Berechnung physikalischer Schäumungsprozesse auf unterschiedlichen Größenskalen

A simulation method for numerical calculation of physical foaming processes is presented. A micro‐scale model is used to predict the time‐dependent change in foam volume by describing the growth of a single foam bubble as a function of given process conditions. In order to visualize the three‐dimensional foam expansion at the macro scale, the calculated growth dynamics is integrated into a simulation model based on the finite volume method. The calculation procedure is validated using discontinuous and continuous foam experiments.