Search results for "Balance"

Tokamak cooling systems and power conversion system options

2022

DEMO will be a fusion power plant demonstrating the integration into the grid architecture of an electric utility grid. The design of the power conversion chain is of particular importance, as it must adequately account for the specifics of nuclear fusion on the generation side and ensure compatibility with the electric utility grid at all times. One of the special challenges the foreseen pulsed operation, which affects the operation of the entire heat transport chain. This requires a time-dependant analysis of different concept design approaches to ensure proof of reliable operation and efficiency to obtain nuclear licensing. Several architectures of Balance of Plant were conceived and dev…

Pre-conceptual design of EU-DEMO Divertor primary heat transfer systems

2021

Abstract In the frame of the activities promoted and encouraged by the EUROfusion Power Plant Physics and Technology (PPPT) department aimed at developing the EU-DEMO fusion reactor, strong emphasis has been recently addressed to the whole Balance of Plant (BoP) which represents the set of systems devoted to convert the plasma generated thermal power into electricity and to deliver it to the grid. Among these systems, the Divertor Primary Heat Transfer Systems (PHTSs) are intended to feed coolant to the two main components of the Divertor assembly, namely the Plasma Facing Components (PFCs) and the Cassette Body (CB). Since the DEMO Divertor must withstand high heat flux loads together with…

Progress in the design development of EU DEMO helium-cooled pebble bed primary heat transfer system

2019

Abstract In the frame of the activities promoted and encouraged by the EURO-fusion Power Plant Physics and Technology (PPPT) department aimed at developing the EU-DEMO fusion reactor, strong emphasis has been recently posed to the whole Balance of Plant (BoP) which represents the set of systems devoted to convert the plasma generated thermal power into electricity and to deliver it to the grid. Among these systems, a very important role is played by the Breeding Blanket (BB) Primary Heat Transfer System (PHTS) as it is responsible to extract more than 80% of the fusion plasma power. In this framework, University of Palermo, Ansaldo Nucleare and CREATE have focused their work to improve ther…

Effects of tinnitus on postural control and stabilization: A pilot study

2015

Introduction: The aim of this study was to evaluate the tinnitus's impacts on postural control. Material and methods: Sixty-six subjects (age: 46,71 ± 15,12 years, height 166,32 ± 8,88 cm, weight 64,85 ± 12,57 kg) with idiopathic tinnitus were recruited for the study and were tested. Each subject underwent to ‘Romberg test’, ‘Static balance’ and ‘posture analysis’. Static balance and posture analysis were performed two times, with open and close eyes, and were measured through the FreeMed posturography system. Results: showed that subjects had worse Baropodometric performances respect to benchmarks; moreover according to literature the results show that these patients had significant differ…

Balance y Desafíos de la Sociedad de la Información

1996

Use of arms - influence to human balance during perturbation

2014

Tämän Pro gradu –tutkielman tarkoituksena oli selvittää, miten käsien käyttäminen tai käyttämättömyys vaikuttaa ihmisen tasapainon korjaamiseen äkillisessä horjutus (häiriö) tilanteessa. Tutkimukseen osallistui viisi vapaaehtoista koehenkilöä (32 +/- 11 vuotta). Tutkimuksen testiprotokollassa tasapainon korjaamiseksi häiriötilanteessa, henkilö asetettiin seisoman juoksumaton päälle, joka liikahti 0.2 metriä eteenpäin, anterior-suunnassa (nopeus 0.24 m/s). Tutkimuksessa käytettiin kahta eri tilaa: kädet ja ei kädet –tila, missä koehenkilö sulki kätensä vartalon eteen puuhkaan. Tasapainoa mitattiin juoksumaton voimalevyltä ja koehenkilön painopisteen muutokset…

Development of predictive models for the estimation of the probability of suffering fear of falling and other fall risk factors based on posturograph…

2016

Falls pose an important problem for older adults. Balance training is one of the main prevention strategies, but there is a lack of objective measurement methods that would allow the effectiveness of the treatments employed to be assessed. This study aimed to analyse the relationship between posturographic parameters and risk factors associated with falling, including the fear of falling (FoF). Forty-one healthy community-dwelling older adults were surveyed on their perception of problems considered to be fall risk factors. Balance measurement with posturography was performed. The relationships between risk factors and falls and risk factors and posturography were analysed by means of cross…

Tensions and expression in Milos Forman’s American films

2012

Milos Forman’s American films require a plural outlook. The director has always been drawn to stories of conflicts that are essential, according to him, to study human passion. This tension, thematic as well as esthetic, allows him to show the smallest mechanisms that lead to oppression in European and American stories, providing the viewer with a lesson of anatomy that pinpoints the most invisible magnetic forces leading to power. This course is accompanied by a journey to individualism, through forces involved in the identification with attractive though realistic characters, through the rediscovery of individual freedom within primitive or regressive worlds, insisting on the necessity of…

Tempo-controlled resistance training of the hip abductors and ankle dorsiflexors with light loads does not improve postural sway in older adults.

2022

The force steadiness capabilities of the hip abductors and ankle dorsiflexors can explain a significant amount of the variance in postural sway during four types of standing balance tests. Control over balance, as well as force steadiness, generally worsens with aging, although the latter can be improved with unique training interventions. The purpose of our study was to assess how tempo-controlled, light-load resistance training of the hip abductors and ankle dorsiflexors influences performance in clinical movement tests, postural sway, muscle strength, and force steadiness in older adults. Participants (n = 28, 70 +/- 7 years, 8 men) completed nine training sessions for either the hip abd…

Physical exercise and prevention of falls. Effects of a Pilates training method compared with a general physical activity program

2021

Introduction Falls are the leading cause of injury-related mortality and morbidity in the elderly. Physical activity plays a key role in the prevention of falls and stimulates postural control. The aim of this study was to compare a general physical activity program for the elderly with a Pilates program to evaluate the effects on balance and on reducing the risk of falling. Materials and methods Forty-six subjects were enrolled in this study, but only 41 were included in the study. The subjects were divided into 2 groups: Pilates group (P-G) and a group following a nonspecific program of physical activity (Pa-G). Each subject underwent the hand grip test, Berg balance scale test, and postu…