Validity and reliability studies of a method of assessment of the elderly mentally ill by nurses are presented. The method has the advantages of being brief, meaningful and structured into three areas which provide useful distinctions for nursing: Orientation, Behaviour, and Physical Capacity. Applications of the scales are discussed.
Vulcan carbon was pre-treated at 850 o C at a ramp rate of 5 o C/min and maintained for 24 hours under 5% H2 in Ar.
Cs-Ru modified MgO and AC preparationTypically, Ru3(CO)12 was dispersed in THF for 2 hours under sonication. The mixture was then transferred to the MgO or activated carbon (AC) and allowed to sonicate at ambient
The rare earth nickel borocarbides, with the generic formula RNi2B2C, have recently been shown to display a rich variety of phenomena. Most striking has been the competition between, and even coexistence of, antiferromagnetism and superconductivity. We have measured the Fermi surface (FS) of LuNi2B2C, and shown that it possesses nesting features capable of explaining some of the phenomena experimentally observed. In particular, it had previously been conjectured that a particular sheet of FS is responsible for the modulated magnetic structures manifest in some of the series. We report the first direct experimental observation of this sheet.
This article provides a critical comparative review of Ulrich Beck's and Mary Douglas's social theories of risk. The author is particularly concerned to highlight the partiality of their favoured renditions of the social reality of risk perception in relation to the accumulated evidence of empirical research. Their contrasting (and opposing) conceptions of the social processes through which people may negotiate the meaning of `hazard' in terms of `risk' are presented as ideal-types which are both indispensable and insufficient for explaining the cultural complexity of this phenomenon. Moreover, insofar as the lived experience of complexity may be made the object of sociological concern, it is suggested that we might be in a better position to evaluate the cultural significance of risk as a product of this experience.
Ammonia production currently contributes almost 11% of global industrial carbon dioxide emissions, or 1.3% of global emissions. In the context of global emission targets and growing demand, decarbonization of this process is highly desirable. We present a method to calculate a first estimate for the optimum size of an ammonia production plant (at the process level), the required renewable energy (RE) supply, and the levelized cost of ammonia (LCOA) for islanded operation with a hydrogen buffer. A model was developed to quantitatively identify the key variables that impact the LCOA (relative to a ±10 GBP/tonne change in LCOA): levelized cost of electricity (±0.89 GBP/MWh), electrolyzer capital expenditure (±65 GBP/kW), minimum Haber− Bosch (HB) load (±12% of rated power), maximum rate of HB load ramping, and RE supply mix. Using 2025/2030 estimates results in a LCOA of 588 GBP/tonne for Lerwick, Scotland. The application of the model will facilitate and improve the production of carbon-free ammonia in the future.
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