V práci je prezentovaná problematika tvorby vol'ných radikálov kyslíka, ich elektrónovej štruktúry, vlastností a metódy detekcie. Pozornosť je venovaná poškodzujúcemu účinku vol'ných radikálov na nukleové kyseliny, proteíny a biologické membrány., The article is dealing with the topic of oxygen-containing free radicals, their electronic structure, properties and methods of detection. Attention is paid to chemical and biochemical aspects of these free radicals, i.e., the sources of their generation, the metal-mediated formation of the reactive species and the damage to lipids, proteins and nucleic acids initiated by them., Klaudia Jomová, Ľubomír Zelenický, Vlasta Brezová, Marián Valko., and Obsahuje bibliografii
Two schools of freedom are considered and compared, 'the liberty school' and 'the real freedom school'. For the liberty school, freedom is freedom of choice. In the classical understanding, that is seen as a matter of rights. In the modern, revised understanding, it is seen as depending on rights, resources and arenas. For the real freedom school, freedom is a matter of being one's own master. This is viewed not as 'rational choice' but as being in control of both the ends and the means in shaping one's life. Freedom is now a function of liberty and reason. The challenge the real freedom school puts to us is the psychological problem of self-control. The second part of the article considers and defies 'reason'. Reason is seen as a competence that must be learned. It consists of the application in life choices of values and norms. Values and norms are beliefs about what is good (or bad) and right (or wrong). Operational values and norms are grounded in evidence-based faith and are learnt in institutions, in particular in families, schools, and arenas of deliberation. The politics of freedom goes to the protection and nurturing of institutions. The method of analysis is individualistic, but the final conclusions social. It is argued that the real freedom school of freedom should be the preferred one for the advancement and protection of freedom in today's world.
Vopěnka’s Alternative Set Theory can be viewed both as an evolution and as a revolution: it is based on his previous experience with nonstandard universes, inspired by Skolem’s construction of a nonstandard model of arithmetic, and its inception has been explicitly mentioned as an attempt to axiomatize Robinson’s nonstandard analysis. Vopěnka preferred working in an axiomatic theory to investigating its individual models; he also viewed other areas of nonclassical mathematics through this prism. This article is a contribution to the mapping of the mathematical neighbourhood of the Alternative Set Theory, and at the same time, it submits a challenge to analyze in more detail the genesis and structure of the philosophical links that eventually influenced the Alternative Set Theory. and Vopěnkovu Alternativní teorii množin lze vnímat jak jako evoluci, tak stejně dobře jako revoluci: vychází z jeho předchozí zkušenosti s nestandardními univerzy, inspirované Skolemovou konstrukcí nestandardního modelu aritmetiky, a je ve svých počátcích explicitně zmiňována jako pokus axiomatizovat Robinsonovu nestandardní analýzu. Vopěnka upřednostňoval práci v axiomatické teorii před zkoumáním jejích jednotlivých modelů; tímto prizmatem nahlížel i některé další partie neklasické matematiky. Text je příspěvkem k mapování matematického okolí Alternativní teorie množin, zároveň otevírá otázku po podrobnější genezi a struktuře filosofických souvislostí, které Alternativní teorii množin postupně ovlivnily.