Search results for "AWS"
showing 10 items of 239 documents
Associations and Sports clubs in the light of community and international legislation: brief notes on the verification of the compatibility of the sy…
2015
The article discusses the problem of the monolithic governance structures of sport. The purpose of the author is to suggest an alternative approach based on a "free market" of sport. The European sports system and the antitrust laws and the judi-cial system in the United States and the protection of competition are discussed.
The new world of human genetic technologies: The policy environment and impacts of genetic screening tests
1995
Today it is possible to screen for mutated DNA sequences which do not induce any diseases but predispose to develop diseases under certain environmental condition. These latter disorders are called “multifactorial” since they result from the interplay of genetic and environmental factors. Among multifactorial disorders there are job-related diseases whose genetic component can be identified by genetic screening tests. The use of these tests to predict occupational disorders, to cut down on them, and to save costs—in particular for absenteeism, health care, and lawsuits—is of interest to employers and insurers. As for employees, it could entail an extremely deep invasion of privacy, economic…
1,4-Naphthoquinones as inducers of oxidative damage and stress signaling in HaCaT human keratinocytes.
2010
Selected biological effects of 1,4-naphthoquinone, menadione (2-methyl-1,4-naphthoquinone) and structurally related quinones from natural sources--the 5-hydroxy-naphthoquinones juglone, plumbagin and the 2-hydroxy-naphthoquinones lawsone and lapachol--were studied in human keratinocytes (HaCaT). 1,4-naphthoquinone and menadione as well as juglone and plumbagin were highly cytotoxic, strongly induced reactive oxygen species (ROS) formation and depleted cellular glutathione. Moreover, they induced oxidative DNA base damage and accumulation of DNA strand breaks, as demonstrated in an alkaline DNA unwinding assay. Neither lawsone nor lapachol (up to 100 microM) were active in any of these assay…
Tracer diffusion properties of core-shell latex films studied by photoinduced grating relaxation
2007
This article reports the application of the Photo-Induced Grating Relaxation technique (also known as Forced Rayleigh Scattering) to investigate the dynamics of films prepared from structured core–shell latex particles via the transport property of the photochromic tracer molecule Aberchrome 540®. The core–shell particles were prepared with a fluoropolymer core (immiscible and impenetrable to the tracer) and a poly(butyl methacrylate) shell. The incompletely dried films (with residual water) manifest their spatial heterogeneity via non-Fickian behavior (spatial scale- dependent apparent diffusion coefficient). The diffusion data was interpreted using the two-state diffusion model, previousl…
Penetrant diffusion in frozen polymer matrices: A finite-size scaling study of free volume percolation
1996
The diffusion of penetrant particles in frozen polymer matrices is investigated by means of Monte Carlo simulations of the bond fluctuation model. By applying finite-size scaling to data obtained from very large systems it is demonstrated that the diffusion process takes place on a percolating free volume cluster describable by a correlated site percolation model which falls into the same universality class as random percolation. The diverging correlation length entails a pronounced dependence of the diffusion constant on the size of the simulated system. It is shown that this dependence is appreciable for a wide range of parameters around the transition. \textcopyright{} 1996 The American …
Microscopic verification of dynamic scaling in dilute polymer solutions: A molecular-dynamics simulation
1991
The dynamics of a single polymer chain immersed in a large number of solvent particles is studied by molecular dynamics. This is the first simulation where chain length (30, 40, and 60 monomers) and statistical accuracy are sufficient to test the predictions of the Zimm model as a result of the particle-particle interactions: The short-time diffusion constant is in good agreement with the Kirkwood prediction, and the monomer motions exhibit the expected dynamic scaling. The long-range hydrodynamic interaction requires a data analysis that explicitly includes the periodic images via Ewald sums.
Self-Diffusion of Associating Star-Shaped Polymers
2016
The dynamics of associating bonds in transient polymer networks exerts a paramount influence on their relaxation and time-dependent mechanical properties. In particular, diffusive motion of polymers mediated by the dissociation and association equilibrium of reversible junctions can affect the materials’ structural stability, dynamic mechanical properties, and a broad spectrum of functionality that arises from the constant motion of polymer chains. In this work, forced Rayleigh scattering is used to measure the diffusion of terpyridine end-functionalized four-arm poly(ethylene glycol) polymers transiently interlinked by zinc ions in organic solvent across a wide range of length and time sca…
Il dovere di fedeltà coniugale tra sessualità legale e sessualità consentita : una indagine casistico-giurisprudenziale di diritto comparato
2022
The provision on marital fidelity seems to be a systemological consistent fact throughout most countries belonging to the so-called «Western legal tradition», despite the numerous and profound changes in family law that have crossed each of them. From a comparative law perspective and with a case-law approach, the essay analyses the role that this duty plays in the microsystem of family relationships at present. It focuses attention on a broad spectrum of situations: from the irretrievable breakdown of the marriage descending from the adultery in the divorce judgments to the related civil liability issues; from the assignment of property rights by the spouse who committed adultery to the re…
Cavidad de Stafne: Estudio retrospectivo de 11 casos
2006
Podeu consultar la versió en anglès a: http://hdl.handle.net/2445/48487
Pursuits of the Dioecese of Wrocław for Exemption - from thr Beginning of the 14th Century to 1821
2022
Istniejąca od 1000 roku w związku metropolitalnym z Gnieznem diecezja wrocławska, na mocy bulli papieża Piusa VII De salute animarum z16 lipca 1821 roku, stała się diecezją egzymowaną, tj. podległą bezpośrednio pod Stolicę Apostolską. Mijająca 200. rocznica tegoż wydarzenia jest dobrą okazją, aby prześledzić, w jaki sposób dążenia do zerwania zależności kościelnej od związku metropolitalnego z Gnieznem były wypadkową dziejów politycznych śląskiej dzielnicy. W artykule przedstawiono dążenia diecezji wrocławskiej do uzyskania egzempcji, których początki datowane są na okres dominacji czeskiej na Śląsku w I połowie XIV wieku, a uwieńczone zostały prawnymi określeniami w bulli z 1821 roku. Auto…