Effect of Nanoparticle Size in Pt/SiO2 Catalyzed Nitrate Reduction in Liquid Phase.

Effect of platinum nanoparticle size on catalytic reduction of nitrate in liquid phase was examined under ambient conditions by using hydrogen as a reducing agent. For the size effect study, Pt nanoparticles with sizes of 2, 4 and 8 nm were loaded silica support. TEM images of Pt nanoparticles showed that homogeneous morphologies as well as narrow size distributions were achieved during the preparation. All three catalysts showed high activity and were able to reduce nitrate below the recommended limit of 50 mg/L in drinking water. The highest catalytic activity was seen with 8 nm platinum; however, the product selectivity for N2 was highest with 4 nm platinum. In addition, the possibility of PVP capping agent acting as a promoter in the reaction is highlighted.

Nursing professionals' experiences of person-centred practices in hospital settings.

BACKGROUND: Person-centred culture has been studied very little in Scandinavian Countries, yet it significantly affects in the care experiences of patients and staff. Current research indicates there are many factors restricting or enabling person-centred care in the hospital setting. AIM: The purpose of this study was to describe person-centred practice in hospital settings and the factors associated with it. METHOD: Data were collected from nursing professionals (N = 276) in a purposefully selected city hospital in one hospital district in Finland. The professionals worked in inpatient wards that had the average duration of treatment period more than one day. The Person-Centred Practice Inventory-Staff (PCPI-S) instrument was used to obtain data via an electronic questionnaire. Data were analysed statistically. RESULTS: A 30% response rate was achieved (n = 82). Person-centred practice was described in positive ways. Nursing professionals' assessments of the implementation of person-centred practice were fairly positive, prerequisites (mean = 3.93, SD = 0.40), the care environment (mean = 3.64, SD = 0.50) and the care process (mean = 3.98, SD = 0.42). There were a few background factors such as the nursing professionals' age, job title, work experience in current unit, employment relationship and the number of nursing professionals in the ward that were associated with how they assessed the prerequisites of person-centred practice. Nursing professionals' demographic variables such as their job title and working experience in nursing associated with how they assessed the implementation of person-centredness in the care environment and the care process. CONCLUSIONS: Nursing professionals have the ability to implement person-centred practice. However, newly graduated or less experienced nursing professionals need support to explore person-centredness in their work.

The Definition of Informatics Competencies in Finnish Healthcare and Social Welfare Education.

Finland is a world leader in the use of public electronic services. Continuous improvement to competencies is a prerequisite for the success of digitalisation in the service development sector. The increasing use of information technology in health and social care needs to be taken into account in the education of the health and social care sector work force. The mandate of the national SotePeda 24/7 project is to identify and define the informatics competencies required for multidisciplinary education of this sector in Finland. The project has adapted international recommendations for use in the national context. The national recommendation covers 12 areas of competency and related content. In addition to defining competencies, the project has produced a toolbox of materials for use by educators of these topics in universities that cover applied sciences and lifelong learning. The results of the project are expected to significantly improve the preparedness of graduating health and social care and related engineering and business sector students to make full use information technology, all of which benefits the national health and social welfare system.

Alkali activation of recovered fuel-biofuel fly ash from fluidised-bed combustion: Stabilisation/solidification of heavy metals.

Recovered fuel-biofuel fly ash from a fluidized bed boiler was alkali-activated and granulated with a sodium-silicate solution in order to immobilise the heavy metals it contains. The effect of blast-furnace slag and metakaolin as co-binders were studied. Leaching standard EN 12457-3 was applied to evaluate the immobilisation potential. The results showed that Ba, Pb and Zn were effectively immobilised. However, there was increased leaching after alkali activation for As, Cu, Mo, Sb and V. The co-binders had minimal or even negative effect on the immobilisation. One exception was found for Cr, in which the slag decreased leaching, and one was found for Cu, in which the slag increased leaching. A sequential leaching procedure was utilized to gain a deeper understanding of the immobilisation mechanism. By using a sequential leaching procedure it is possible fractionate elements into watersoluble, acid-soluble, easily-reduced and oxidisable fractions, yielding a total 'bioavailable' amount that is potentially hazardous for the environment. It was found that the total bioavailable amount was lower following alkali activation for all heavy metals, although the water-soluble fraction was higher for some metals. Evidence from leaching tests suggests the immobilisation mechanism was chemical retention, or trapping inside the alkali activation reaction products, rather than physical retention, adsorption or precipitation as hydroxides.