Emerging evidence suggests that dietary-derived flavonoids have the potential to improve human memory and neuro-cognitive performance via their ability to protect vulnerable neurons, enhance existing neuronal function and stimulate neuronal regeneration. Long-term potentiation (LTP) is widely considered to be one of the major mechanisms underlying memory acquisition, consolidation and storage i...

The text analyzes the contradictions, ambiguities and accommodations underlying the remodelling of Portugal from an imperial metropolis into a European post-colonial nation. It focuses on two interrelated and contradictory facets of national redefinition – namely, the incorporation of Portuguese transnational migrants into the nation and Portugal’s transformation into a receptor of immigrants f...

In this study, a comparison of the effects of neutron and electron irradiation of aqueous DNA solutions was investigated to characterize potential neutron signatures in DNA damage induction. Ionizing radiation generates numerous lesions in DNA, including base and sugar lesions, lesions involving base-sugar combinations (e.g. 8,5'-cyclopurine-2'-deoxynucleosides) and DNA-protein cross-links, as ...

Many neutron-detection techniques are under consideration as potential replacements for 3 He gas-filled proportional tubes, which are widely used in international nuclear safeguards applications. The traditional 10 B-lined proportional tube is a commercial off-the-shelf (COTS) technology for neutron detection that predates the development of 3 He detectors. There is also a long history of its u...

PURPOSE The aim of this study is evaluation of the effect of diameter of (10)B nanoparticles and various neutron capture cross-section libraries on macroscopic dose enhancement in boron neutron capture therapy (BNCT). MATERIAL AND METHODS MCNPX Monte Carlo code was used for simulation of a (252)Cf source, a soft tissue phantom and a tumor containing (10)B nanoparticles. Using (252)Cf as a neu...

Abstract. A series of isochronal heating experiments were performed to constrain monazite fission track thermal annealing properties. The 252Cf tracks implanted into crystals from the Devonian Harcourt granodiorite (Victoria, Australia) on polished surfaces oriented parallel (100) pinacoidal faces and perpendicular crystallographic c axis. Tracks annealed over 1, 10, 100 1000 h schedules at tem...

Gas-phase chemical behaviors of short-lived technetium carbonyl complexes were studied using a low temperature isothermal chromatograph (IC) coupled with a (252)Cf spontaneous fission (SF) source. Fission products recoiled from the (252)Cf SF source were thermalized in a mixed gas containing CO, and then technetium carbonyl complexes were formed from reactions between CO gas and various technet...