944 resultados para radical scavenging
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Advertisements on p. [3]-[14] at end.
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Mode of access: Internet.
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Mode of access: Internet.
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Cover title: The radical cure of hernia.
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Publication suspended from July 1870-Jan. 1871
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Mode of access: Internet.
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Thesis (Ph. D.)--St. Cross College, 1982.
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Reprint of the 1943 ed.
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Thesis (Ph.D.)--University of Washington, 2016-06
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Thesis (Master's)--University of Washington, 2016-06
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Two central strands in Arendt's thought are the reflection on the evil of Auschwitz and the rethinking in terms of politics of Heidegger's critique of metaphysics. Given Heidegger's taciturnity regarding Auschwitz and Arendt's own taciturnity regarding the philosophical implications of Heidegget's political engagement in 1933, to set out how these strands interrelate is to examine the coherence of Arendt's thought and its potential for a critique of Heidegger. By refusing to countenance a theological conception of the evil of Auschwitz, Arendt consolidates the break with theology that Heidegger attempts through his analysis of the essential finitude of Dasein. In the light of Arendt's account of evil, it is possible to see the theological vestiges in Heidegger's ontology. Heidegger's resumption of the question concerning the categorical interconnections of the ways of Being entails an abandonment of finitude: he accommodates and tacitly justifies that which can have no human justification.
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Block copolymers have become an integral part of the preparation of complex architectures through self-assembly. The use of reversible addition-fragmentation chain transfer (RAFT) allows blocks ranging from functional to nonfunctional polymers to be made with predictable molecular weight distributions. This article models block formation by varying many of the kinetic parameters. The simulations provide insight into the overall polydispersities (PDIs) that will be obtained when the chain-transfer constants in the main equilibrium steps are varied from 100 to 0.5. When the first dormant block [polymer-S-C(Z)=S] has a PDI of 1 and the second propagating radical has a low reactivity to the RAFT moiety, the overall PDI will be greater than 1 and dependent on the weight fraction of each block. When the first block has a PDI of 2 and the second propagating radical has a low reactivity to the RAFT moiety, the PDI will decrease to around 1.5 because of random coupling of two broad distributions. It is also shown how we can in principle use only one RAFT agent to obtain block copolymers with any desired molecular weight distribution. We can accomplish this by maintaining the monomer concentration at a constant level in the reactor over the course of the reaction. (c) 2005 Wiley Periodicals, Inc.
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A mild degree of undernutrition brought about by restricting the amount of food in the diet is known to alter the life span of an animal. It has been hypothesised that this may be related to the effects of undernutrition on an animals anti-oxidant defense system. We have therefore, used real-time PCR (rt-PCR) techniques to determine the levels of mRNA expression for manganese superoxide dismutase (MnSOD), copper/zinc superoxide dismutase (Cu/ZnSOD), glutathione peroxidase 1 (GPx 1) and catalase in the brains of Quackenbush mice undernourished from conception until 21-post-natal days of age. It was found that 21- and 61-day-old undernourished mice had a deficit in the expression of Cu/ZnSOD in both the cerebellum and forebrain regions compared to age-matched controls. The expression of MnSOD was found to be greater in the cerebellum, but not the forebrain region, of 21-day-old undernourished mice. There were no significant differences in the expression of GPx 1 and catalase between control and undernourished or previously undernourished mice. Our results confirm that undernutrition during the early life of a mouse may disrupt some of the enzymes involved in the anti-oxidant defense systems.