Search results for "Sky"

Neuromuscular function during knee exercises in water : with special reference to hydrodynamics and therapy

2002

The present series of studies examined neuromuscular function during knee exercise in water and training responses of an aquatic exercise program. Emphasis was placed on the quantification of water resistance, the drag. Subjects who participated in this series of studies were 25-35-year-old healthy women and men. Neuromuscular function was examined using electromyography (EMG), force and reflex sensitivity measurements in the isometric condition on land and in water. EMG and angular velocity were measured during dynamic knee extension-flexion in still and flowing water. The drag forces acting on the leg and foot model were measured in the barefoot condition and with a large resistance boot.

Viraalimarkkinointi verkkoyhteisöissä : Informaatioteknologian tiedekunnan yhteisökampanja Irc-galleriassa

2008

Diffuse ultraviolet erythemal irradiance on inclined planes: a comparison of experimental and modeled data.

2009

Values of measured and modeled diffuse UV erythemal irradiance (UVER) for all sky conditions are compared on planes inclined at 40 degrees and oriented north, south, east and west. The models used for simulating diffuse UVER are of the geometric-type, mainly the Isotropic, Klucher, Hay, Muneer, Reindl and Schauberger models. To analyze the precision of the models, some statistical estimators were used such as root mean square deviation, mean absolute deviation and mean bias deviation. It was seen that all the analyzed models reproduce adequately the diffuse UVER on the south-facing plane, with greater discrepancies for the other inclined planes. When the models are applied to cloud-free con…

Jyväskylän yliopiston ylioppilaskunnan hiili- ja luontojalanjälki

2023

Tässä hankkeessa laskettiin Jyväskylän yliopiston ylioppilaskunnan (JYY) merkittävimpien toimintojen vuoden 2021 hiili- ja luontojalanjälki eli ilmasto- ja luontohaitat. Menetelmä perustuu pääosin muun muassa EXIOBASE ja LC-IMPACT-tietokantoihin, joiden avulla pystytään talouskirjanpitoon perustuen selvittämään eri tuotteiden ja palveluiden aiheuttamat ilmasto- ja luontohaitat sekä niiden maantieteelliset sijainnit. JYY:n vuoden 2021 hiilijalanjälki oli 2017 t CO2e, maaekosysteemeihin kohdistuva luontojalanjälki oli 8,30E-09 PDF (globaali osuus lajeista, jotka ovat riskissä kuolla sukupuuttoon), makean veden ekosysteemeihin kohdistuva luontojalanjälki oli 1,42E-09 PDF ja meriekosysteemeihin…

Associations of physical activity and physical fitness with cardiovascular risk factors in young men

2015

Artikkeliväitöskirja. Sisältää yhteenveto-osan ja neljä artikkelia. Article dissertation. Contains an introduction part and four articles.

Heat in Normandy, types of atmospheric circulation and climate change (1970 - 2019)

2020

Heat in Normandy, synoptic circulation patterns and climate change (1970-2019). This article focuses on the role and the evolution of the different kinds of synoptic circulation patterns in the occurrence of hot days in Normandy. Heat is here, very dependent on the presence of action centres over central Europe as well as, air flow coming from NE and E. Contemporary climate change expresses itself by a rise in thermal efficiency of all synoptic circulation patterns (more heat for the same flow). Lastly, the north of Cotentin stands out by being a real “cool island” during summer because of its peninsula position which imposes on any air mass, regardless of its origin, a cooling from its bot…

Origin and extinction of chaotic oscillations in the Belousov-Zhabotinsky reaction

2010

Unethical Brotherly Love: Zell Kravinsky and Maximum Human Utility

2014

The case of American investor and philanthropist Zell Kravinsky (1956-) presents numerous ethical challenges regarding our social responsibility to others. In 2003, after disbursing the bulk of his forty-five-million-dollar fortune to various charities, Kravinsky made the decision to donate one of his kidneys to an impoverished African-American woman he had met only once. In doing so he courageously saved a life, but also incurred the wrath of his family, friends, and many observers in the media who questioned his sanity. To Kravinsky, however, refusal to donate would have been tantamount to murder, constituting a violation of his belief in ‘maximum human utility’ – a concept that insists o…

Oscillatory dynamics of the Belousov-Zhabotinsky system in the presence of a self-assembling nonionic polymer. Role of the reactants concentration.

2010

In the present study, the role played by the reactants concentration on the nonlinear response of a Belousov–Zhabotinsky (BZ) system to the addition of a self-assembling non-ionic polymer, poly(ethylene glycol) (PEG), has been assessed. The oscillatory parameters are influenced to an extent that significantly depends on the concentration of both the polymer and the Belousov–Zhabotinsky components. The effects obtained were attributed to the reaction among some of the BZ key species and the backbone and the alcoholic functional groups of the polymer, both in its monomeric and aggregated forms. Support to the proposed perturbation mechanism has been provided by performing numerical simulation…

Dynamic evolution of the oscillatory Belousov-Zhabotinsky reaction upon addition of a non-ionic polymer

2006

Abstract The dynamic evolution of the oscillatory Belousov–Zhabotinsky reaction upon addition of increasing amount of the non-ionic polymer polypropylene glycol with molecular weight 425 g mol−1 (PPG-425) was investigated in a stirred-batch reactor by monitoring the Ce(IV) absorbance changes. The oscillatory parameters are significantly altered by the presence of the polymer. The findings obtained in the present work revealed that the PPG-425 is not only more effective, than other polymer previously [R. Lombardo, C. Sbriziolo, M.L. Turco Liveri, K. Pelle, M. Wittmann, Z. Noszticzius, in: J.A. Pojman, Q. Tran-Cong-Miyata (Eds.), Nonlinear Dynamics in Polymeric Systems, American Chemical Soci…