Search results for " Balance"
showing 10 items of 823 documents
Effects on intermittent postural control in people with Parkinson's due to a dual task.
2021
Objectives The aim of the present study was to determine the effects of performing a dual task on the sway density plot parameters in Parkinson's disease and control subjects. Methods A cross-sectional design was used to establish differences in the mean peak, mean time, and mean distance between a group with Parkinson's disease and a control group without Parkinson's disease. The subjects performed, in a unique measurement session, two trials under three different randomized conditions: i. eyes open, ii. eyes closed, and iii. Eyes open with foam base. One trial was performed as a single task (i.e., the subjects completed one of the balance test), while the other trial was performed as a du…
Zum Problem der Stickstoffbilanz beim Keimwachstum in Stabilisatoren
1960
Es wurde das Keimwachstum in Verbindung mit Stickstoffbilanzen in experimentell infizierten Blutkonserve-Stabilisatoren untersucht. Hierbei zeigte sich, das bei einzelnen Stammen gramnegativer Stabchen eine deutliche Keimvermehrung in diesen Medien stattfindet, obwohl sie in ihrer chemischen Zusammensetzung keine Stickstoffquelle enthalten. Da es im Verlauf der Keimvermehrung zu einer progressiven N-Zunahme kam (Initialwert der beimpften Stabilisatormenge 4–6 γ, Endwert zwischen 10 und 20 γ/ml), vermuten wir, das eine Fixierung atmospharischen Stickstoffs durch die genannten Keime stattgefunden hat. Kontrollteste mit anderen gramnegativen sowie mit grampositiven Bakterien verliefen negativ.
Glutamine transport by the blood-brain barrier: a possible mechanism for nitrogen removal
1998
Glutamine and glutamate transport activities were measured in isolated luminal and abluminal plasma membrane vesicles derived from bovine brain endothelial cells. Facilitative systems for glutamine and glutamate were almost exclusively located in luminal-enriched membranes. The facilitative glutamine carrier was neither sensitive to 2-aminobicyclo(2,2,1)heptane-2-carboxylic acid inhibition nor did it participate in accelerated amino acid exchange; it therefore appeared to be distinct from the neutral amino acid transport system L1. Two Na-dependent glutamine transporters were found in abluminal-enriched membranes: systems A and N. System N accounted for approximately 80% of Na-dependent glu…
Verwertbarkeit verschiedener Cysteinderivate bei langfristiger parenteraler Ernährung
1989
Utilization of cysteine derivatives for parenteral nutrition was established by means of nitrogen balance of growing rats. N,N-bis-acetylcystine and bisacetyl-glycyl-cystine were not utilized as substrates. N-acetylcysteine, glutathione disulfide, and L-thiazolidine-(4)-carboxylic acid gave evidence as suitable cysteine sources for parenteral nutrition.
Vehicular Motion and Traffic Breakdown: Evaluation of Energy Balance
2009
Microscopic traffic models based on follow–the–leader behaviour are strongly asymmetrically interacting many–particle systems. The well–known Bando’s optimal velocity model includes the fact that (firstly) the driver is always looking forward interacting with the lead vehicle and (secondly) the car travels on the road always with friction. Due to these realistic assumptions the moving car needs petrol for the engine to compensate dissipation by rolling friction. We investigate the flux of mechanical energy to evaluate the energy balance out of the given nonlinear dynamical system of vehicular particles. In order to understand the traffic breakdown as transition from free flow to congested t…
Response Power Spectrum of Multi-Degree-of-Freedom Nonlinear Systems by a Galerkin Technique
2003
This paper deals with the estimation of spectral properties of randomly excited multi-degree-of-freedom (MDOF) nonlinear vibrating systems. Each component of the vector of the stationary system response is expanded into a trigonometric Fourier series over an adequately long interval T. The unknown Fourier coefficients of individual samples of the response process are treated by harmonic balance, which leads to a set of nonlinear equations that are solved by Newton’s method. For polynomial nonlinearities of cubic order, exact solutions are developed to compute the Fourier coefficients of the nonlinear terms, including those involved in the Jacobian matrix associated with the implementation o…
Disentangling the Process of Work–Family Conflict
2016
Abstract. The purpose of this conceptual article is to deliver a new framework model for research on work–family conflict (WFC), which overcomes existing limitations. By adopting an organizational stress perspective on WFC we show that WFC should be conceptualized as a process. By disentangling its components we point out several problems of WFC research and how our new approach can help to avoid them. Research on WFC often does not comply with the current standards of organizational stress research. Common WFC measures bear the potential of content that overlaps with determinants and outcomes, which might spuriously inflate correlations. To avoid measurement overlap, we propose to operati…
Fluorescence explorer (FLEX): An optimised payload to map vegetation photosynthesis from space
2006
The FLuorescence EXplorer (FLEX) mission proposes to launch a satellite for the global monitoring of steady-state chlorophyll fluorescence in terrestrial vegetation. Fluorescence is a sensitive probe of photosynthetic function in both healthy and physiologically perturbed vegetation, and a powerful non-invasive tool to track the status, resilience, and recovery of photochemical processes and moreover provides important information on overall photosynthetic performance with implications for related carbon sequestration. The early responsiveness of fluorescence to atmospheric, soil and plant water balance, as well as to atmospheric chemistry and human intervention in land usage makes it an ob…
Choosing to Work? Mothers Return-to-Work Decisions, Social Class, and the Local Labor Market
2015
The aim of this study is to examine the ways in which social class shapes the return-to-work decisions of Finnish working-class and middle-class mothers, and how these decisions are structured by the constraints and opportunities mothers face in the local labor market. The focus of the study is in the local labor market of the city of Jyväskylä. The data consist of two semi-structured focus group interviews of 14 employed mothers of below school-age children. Using the framework of “gendered moral rationalities,” the study shows that there are similarities in mothers’ experiences, while the structural constraints mothers faced when deciding about the timing of returning back to work differ.…
Organizational Initiatives for Promoting Employee Work-Life Reconciliation Over the Life Course. A Systematic Review of Intervention Studies
2016
This review aimed to explore the initiatives, interventions, and experiments implemented by employing organizations and designed to support the work-life reconciliation at workplaces, and the effects of these actions on employees’ well-being at work. A systematic literature review was conducted on the basis of a search in PsycInfo, ERIC, and the ISI Web of Science database of Social Sciences between January 2000 and May 2015. Those studies were included in which either organizational or individual-level initiatives, interventions, or experiments were implemented by employers at workplaces in order to promote the work-life reconciliation of their employees. Work-life reconciliation was consi…