Search results for " Capacity"
showing 10 items of 902 documents
Low temperature heat capacity of phononic crystal membranes
2016
Phononic crystal (PnC) membranes are a promising solution to improve sensitivity of bolometric sensor devices operating at low temperatures. Previous work has concentrated only on tuning thermal conductance, but significant changes to the heat capacity are also expected due to the modification of the phonon modes. Here, we calculate the area-specific heat capacity for thin (37.5 - 300 nm) silicon and silicon nitride PnC membranes with cylindrical hole patterns of varying period, in the temperature range 1 - 350 mK. We compare the results to two- and three-dimensional Debye models, as the 3D Debye model is known to give an accurate estimate for the low-temperature heat capacity of a bulk sam…
Quantum fluctuations and correlations in equilibrium and nonequilibrium thermodynamics
2014
Critical power and anaerobic work capacity at high altitude (HA)
2009
Effects of intrinsic aerobic capacity, aging and physical activity on interleukin-15 protein level in serum and skeletal muscle
2015
Myokines are cytokines and other peptides produced in muscle that can transmit autocrine, paracrine or endocrine signals to other tissues. This is a potential way for exercise to carry out its beneficial effects on different parts of the body. Interleukin-15 (IL-15) is a myokine that has been shown to exert beneficial effects on multiple tissues: skeletal muscle, adipose tissue, bone and skin. Muscle-derived IL-15 signaling remains to be fully elucidated. It is known that the expression and signaling is affected by aging, exercise, and intrinsic aerobic capacity. The purpose of this study was to assess the effects of intrinsic aerobic capacity, aging and physical activity separately and in …
Balance confidence and functional balance are associated with physical disability after hip fracture
2012
Background. This cross-sectional study investigated the associations between balance confidence, functional balance, and physical disability among older people after hip fracture. Material and methods. The study utilizes baseline data of two randomized controlled trials (ISRCTN34271567 and ISRCTN53680197). The participants were 159 community-dwelling over 60-year-old people. Health, fracture status, the date and type of surgery, and contraindications for participation were assessed in a clinical examination. Balance confidence was assessed by the Activities-specific Balance Confidence Scale (ABC) and functional balance by the Berg Balance Scale. Physical disability was assessed by a questio…
Colon Bioaccessibility under In Vitro Gastrointestinal Digestion of Different Coffee Brews Chemically Profiled through UHPLC-Q-Orbitrap HRMS
2021
Coffee represents one of the most traditionally consumed beverages worldwide, containing a broad range of human health&ndash
Turismo inbound e ricettività in Sicilia: un’analisi della distribuzione spaziale
2010
In the last few years a significant increase in tourist accommodation has taken place in Sicily, both in hotels and in other hospitality. The increased number of accommodation beds has been encouraged by a multilevel policy of investments – both regional and European – aimed at filling the qualitative and quantitative gap penalizing Sicily in the field of tourism and accommodation competition. In some way, it may seem that the purpose of improving the accommodation supply in our Island has been obtained: indeed, while in 2000, the year when the previous European planning started, the number of accommodation beds in hotels was, in Sicily, of 4,2% of the national amount, in 2008 the Island ra…
The pivotal role of students’ absorptive capacity in management learning
2022
Within a research context dominated by an increasing interest in innovative learning method- ologies in management education, an individual’s capacity to establish links between existing and new knowledge, that is, absorptive capacity (AC), has been surprisingly neglected in management (higher) education inquiry. This study helps to close this gap by investigating the role of management students’ AC on their academic performance. The study also examines the moderating effect on this relationship of using traditional learning methodologies (such as lectures), innovative learning methodologies (such as interacting with digital platforms), and having a cooperative climate in the classroom. Sec…
Ammonium adsorption, desorption and recovery by acid and alkaline treated zeolite
2021
In this study, the suitability of zeolite as a possible medium for ammonium adsorption, desorption and recovery from wastewater was investigated. Specifically, batch adsorption and desorption studies with solutions enriched in NH$_4^+$ were conducted employing zeolite to evaluate how the chemical treatment and contact time affect adsorption and desorption. Several experimental tests were carried out considering both untreated and treated zeolite. Untreated and HCl-Na treated zeolite adsorbed up to 11.8 mg NH$_4^+$ g$^{-1}$ and showed the highest efficiency in recovering NH$_4^+$ from aqueous solution. Regardless of pre-treatment, treatments with NaCl resulted in higher and faster adsorption…