452 research outputs found
Economical comparison of CHP systems for industrial user with large steam demand
In this paper cogeneration benefits applied to a user with a high steam demand are analyzed. The methodology for the feasibility study and the economical analysis of the investment is presented under the Italian legislative framework. The methodology is applied to an actual case and a detailed description and discussion of all data input is provided. Especially this last key point will be faced using starting data usually available in these kind of studies (i.e., not very detailed for thermal consumption). Finally a comparison of different CHP technologies and a sensitivity analysis is done
Preparing care home staff to manage challenging behaviours among residents living with dementia: A mixed-methods evaluation
We evaluated an intervention designed to manage challenging behaviours of people with dementia. Framework analysis of interviews (n = 21) showed the intervention modified practice and perceptions. The intervention (n = 58; power calculation proposed n = 160 for medium effect) had no significant effect on attitudes to dementia for time (p = .42) or care home (p = .15). The Maslach burnout scores did not change significantly for person-centredness for time (p = .83) or care home (p = .29). Hope scores showed a significant effect post-intervention (p = .004), but this was not maintained. No significant main effect was found for care home (p = .36). Experiential learning enabled staff to experience benefits of person-centred care firsthand
Human hypocretin and melanin-concentrating hormone levels are linked to emotion and social interaction.
The neurochemical changes underlying human emotions and social behaviour are largely unknown. Here we report on the changes in the levels of two hypothalamic neuropeptides, hypocretin-1 and melanin-concentrating hormone, measured in the human amygdala. We show that hypocretin-1 levels are maximal during positive emotion, social interaction and anger, behaviours that induce cataplexy in human narcoleptics. In contrast, melanin-concentrating hormone levels are minimal during social interaction, but are increased after eating. Both peptides are at minimal levels during periods of postoperative pain despite high levels of arousal. Melanin-concentrating hormone levels increase at sleep onset, consistent with a role in sleep induction, whereas hypocretin-1 levels increase at wake onset, consistent with a role in wake induction. Levels of these two peptides in humans are not simply linked to arousal, but rather to specific emotions and state transitions. Other arousal systems may be similarly emotionally specialized
Broadband Dual-Comb Spectroscopy in the Spectral Fingerprint Region
Infrared spectroscopy in the spectral fingerprint region from 6-12 um
accesses the largest molecular absorption cross-sections, permitting sensitive,
quantitative and species-specific measurements. Here, we show how dual-comb
spectroscopy--a form of high-speed Fourier-transform spectroscopy involving no
moving parts and capable of very high resolutions--can be extended to the 6-8um
wavelength band using femtosecond optical parametric oscillators (OPOs). By
acquiring dual-comb interferograms faster than the mutual decoherence time of
the OPO combs we implement line-shape-preserving averaging to obtain low-noise,
high-fidelity spectra of H2O and CH4 at approximately 0.3 cm-1 resolutions from
1285-1585 cm-1
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