Theory of surface enrichment in disordered monophasic binary alloys. Numerical computations for Ag-Au alloys

The regular solution model is used to compute the surface enrichment in the (111)- and (100)-faces of silver-gold alloys. Surface enrichment by silver is predicted to increase if the surface plane becomes less saturated and decreases if one raises the temperature. The possible implications of these findings are considered in the light of the recently reported mechanism of the epoxidation of ethylene over silver catalysts

Impact of sex differences in co-morbidities and medication adherence on outcome in 25 776 heart failure patients

__Aims:__ Health insurance claims (HIC) databases in the Netherlands capture unselected patient populations, which makes them suitable for epidemiological research on sex differences. Based on a HIC database, we aimed to reveal sex differences in heart failure (HF) outcomes, with particular focus on co-morbidities and medication. __Methods and results:__ The Achmea HIC database included 14 517 men and 11 259 (45%) women with a diagnosis treatment code for chronic HF by January 2015. We related their sex, co-morbidities, and medication adherence (medication possession rate >0.8) with the primary endpoint (PE) of all-cause mortality or HF admission during a median follow-up of 3.3 years, using Cox regression. Median age of men and women was 72 and 76 years, respectively. Prevalence of co-morbidities and use of disease-modifying drugs was higher in men; however, medication adherence was similar. At the end of follow-up, 35.1% men and 31.8% women had reached the PE. The adjusted hazard ratio for men was 1.25 (95% confidence interval: 1.19–1.30). A broad range of co-morbidities was associated with the PE. Overall, these associations were stronger in women than in men, particularly for renal insufficiency, chronic obstructive pulmonary disease/asthma, and diabetes. Non-adherence to disease-modifying drugs was related with a higher incidence of the PE, with similar effects between sexes. __Conclusions:__ In a representative sample of the Dutch population, as captured in a HIC database, men with chronic HF had a 25% higher incidence of death or HF admission than women. The impact of co-morbidities on the outcome was sex dependent, while medication adherence was not

Waarom Nederland niet klaar is voor nieuwe wildernis

Contains fulltext : 198500.pdf (publisher's version ) (Open Access)8 december 201

Theory of surface enrichment in disordered monophasic binary alloys. Numerical computations for Ag-Au alloys

The regular solution model is used to compute the surface enrichment in the (111)- and (100)-faces of silver-gold alloys. Surface enrichment by silver is predicted to increase if the surface plane becomes less saturated and decreases if one raises the temperature. The possible implications of these findings are considered in the light of the recently reported mechanism of the epoxidation of ethylene over silver catalysts

Self-determination in relation to quality of life in homeless young adults: Direct and indirect effects through psychological distress and social support

Contains fulltext : 161562.pdf (publisher's version ) (Open Access)The self-determination theory emphasizes the importance of satisfaction with autonomy, competence, and relatedness for a person's psychological growth and well-being. This study examines associations between autonomy, competence, and relatedness with quality of life in homeless young adults; and whether possible associations are mediated by psychological distress and perceived social support. By means of face-to-face interviews, 255 homeless young adults who receive care from 10 Dutch shelter facilities for homeless young adults have been interviewed (M age = 20, 77% male, 51% Dutch Nationality) shortly after entering the facility. Autonomy, competence, and relatedness are all associated with quality of life, with competence as the highest correlate. Psychological distress mediates both competence and autonomy, and social support mediates competence as well as relatedness. These findings emphasize the importance of intervention programs for homeless young adults, focusing on the enhancement of self-determination, especially competence, to improve their quality of life.11 p

Analysis of a second order gas-solid reaction in an isothermal spherical particle. Application to the reduction of oxides with gaseous substrates

The mass transport equation applying to a second order gas solid reaction taking place in an isothermal spherical particle is solved by the orthogonal collocation method, using 3, 5 and 8 point collocation. The results are compared with those obtained in earlier studies using different assumptions and calculation procedures

Surface enrichment in silver-gold alloys

Auger spectroscopy data of annealed Ag-Au [61742-71-0] alloys contg. 12.2-42.4 at.% Ag showed that the surface compn. remained equal to that of the bulk up to equil. temps. of 650 Deg. These results are discussed in terms of theor. model

Surface enrichment in silver-gold alloys

Auger spectroscopy data of annealed Ag-Au [61742-71-0] alloys contg. 12.2-42.4 at.% Ag showed that the surface compn. remained equal to that of the bulk up to equil. temps. of 650 Deg. These results are discussed in terms of theor. model