Institution
National Nuclear Energy Commission
Government•Rio de Janeiro, Brazil•
About: National Nuclear Energy Commission is a government organization based out in Rio de Janeiro, Brazil. It is known for research contribution in the topics: Dosimetry & Neutron. The organization has 3816 authors who have published 4694 publications receiving 59951 citations.
Topics: Dosimetry, Neutron, Corrosion, Laser, Population
Papers published on a yearly basis
Papers
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TL;DR: In this paper, a conformally covariant formulation of operator product expansion is discussed as an expansion of the product of two representations into a direct sum of irreducible representations, and the implications of the isomorphism in the derivation of the representations are discussed.
631 citations
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TL;DR: In this paper, the electrochemical behavior of Ti-6Al-4V and Ti-7Al-7Nb alloys, commonly used implant materials, particularly for orthopaedic and osteosynthesis applications, was investigated together with that of Ti−13Nb−13Zr alloy in Hank's solution at 37°C.
585 citations
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TL;DR: Several examples of type I and type II photosensitized oxidation reactions are provided to illustrate the complexity and the diversity of the degradation pathways of mostly relevant biomolecules upon one‐electron oxidation and singlet oxygen reactions.
Abstract: Here, 10 guidelines are presented for a standardized definition of type I and type II photosensitized oxidation reactions. Because of varied notions of reactions mediated by photosensitizers, a checklist of recommendations is provided for their definitions. Type I and type II photoreactions are oxygen-dependent and involve unstable species such as the initial formation of radical cation or neutral radicals from the substrates and/or singlet oxygen (1 O21 ∆g ) by energy transfer to molecular oxygen. In addition, superoxide anion radical (O2·-) can be generated by a charge-transfer reaction involving O2 or more likely indirectly as the result of O2 -mediated oxidation of the radical anion of type I photosensitizers. In subsequent reactions, O2·- may add and/or reduce a few highly oxidizing radicals that arise from the deprotonation of the radical cations of key biological targets. O2·- can also undergo dismutation into H2 O2 , the precursor of the highly reactive hydroxyl radical (·OH) that may induce delayed oxidation reactions in cells. In the second part, several examples of type I and type II photosensitized oxidation reactions are provided to illustrate the complexity and the diversity of the degradation pathways of mostly relevant biomolecules upon one-electron oxidation and singlet oxygen reactions.
461 citations
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University of Exeter1, National Institute for Space Research2, University of Oxford3, Lancaster University4, Stockholm Resilience Centre5, National Center for Atmospheric Research6, National Nuclear Energy Commission7, University of Leeds8, Earth System Research Laboratory9, California Institute of Technology10
TL;DR: It is shown that gross emissions from forest fires are more than half as great as those from deforestation during drought years, which means that carbon emission inventories intended for accounting and developing policies need to take account of substantial forest fire emissions not associated to the deforestation process.
Abstract: Tropical carbon emissions are largely derived from direct forest clearing processes. Yet, emissions from drought-induced forest fires are, usually, not included in national-level carbon emission inventories. Here we examine Brazilian Amazon drought impacts on fire incidence and associated forest fire carbon emissions over the period 2003–2015. We show that despite a 76% decline in deforestation rates over the past 13 years, fire incidence increased by 36% during the 2015 drought compared to the preceding 12 years. The 2015 drought had the largest ever ratio of active fire counts to deforestation, with active fires occurring over an area of 799,293 km2. Gross emissions from forest fires (989 ± 504 Tg CO2 year−1) alone are more than half as great as those from old-growth forest deforestation during drought years. We conclude that carbon emission inventories intended for accounting and developing policies need to take account of substantial forest fire emissions not associated to the deforestation process.
450 citations
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TL;DR: Applications in protein processing are described and variations of immobilized metal ion affinity chromatography are described as well as other metal affinity-based technologies.
445 citations
Authors
Showing all 3838 results
Name | H-index | Papers | Citations |
---|---|---|---|
Giorgio Parisi | 108 | 941 | 60746 |
Sergio Ferrara | 105 | 726 | 44507 |
Richard Wilson | 70 | 809 | 21477 |
Eliana B. Souto | 66 | 447 | 15706 |
Andrea Saltelli | 65 | 184 | 31540 |
Fausto Croce | 51 | 162 | 11753 |
Sílvia M. Rocha | 42 | 163 | 4934 |
Marcos Duarte | 41 | 122 | 5855 |
Luiz Gustavo Cançado | 41 | 106 | 13155 |
Ruggero Caminiti | 41 | 267 | 7296 |
Francesco Romanelli | 40 | 236 | 5756 |
Mario Molinaro | 39 | 111 | 5923 |
Giovanna Cenacchi | 38 | 217 | 4948 |
Claudio Pellegrini | 38 | 235 | 5885 |
Maria Manuela Silva | 37 | 324 | 5258 |