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Congress on climate change: Global risks, challenges and decisions; Copenhagen (Denmark); 10-12 Mar 2009; Available from http://dx.doi.org/10.1088/1755-1307/6/46/462010; Abstract only; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
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IOP Conference Series: Earth and Environmental Science (EES); ISSN 1755-1315;
; v. 6(46); [1 p.]

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Duan, Guohua; Zhan, Fangfang; Du, Zhenguo; Ho, Simon Y.W.; Gao, Fangluan, E-mail: raindy@fafu.edu.cn2018
AbstractAbstract
[en] Highlights: • The coat protein gene of potato virus S has been evolving at a mean rate of 3.32 × 10−4 subs/site/year. • The crown group of potato virus S arose in the year 1325 (95% HPD 762–1743). • Potato virus S originated in South America. • There have been multiple migration pathways between Europe and other regions. • Europe has been a major hub for the transmission of potato virus S. Potato virus S (PVS) is a major plant pathogen that causes considerable losses in global potato production. Knowledge of the evolutionary history and spatio-temporal dynamics of PVS is vital for developing sustainable management schemes. In this study, we investigated the phylodynamics of the virus by analysing 103 nucleotide sequences of the coat protein gene, sampled between 1985 and 2014. Our Bayesian phylogenetic analyses showed that PVS has been evolving at a rate of 3.32 × 10−4 substitutions/site/year (95% credibility interval 1.33 × 10−4–5.58 × 10−4). We dated the crown group to the year 1325 CE (95% credibility interval 762–1743 CE). Our phylogeographic analyses pointed to viral origins in South America and identified multiple migration pathways between Europe and other regions, suggesting that Europe has been a major hub for PVS transmission. The results of our study have potential implications for developing effective strategies for the control of this pathogen.
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S0042682218303027; Available from http://dx.doi.org/10.1016/j.virol.2018.09.022; Copyright (c) 2018 Elsevier Inc.; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
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Nguyen, Trinh-Don; Faraldos, Juan A.; Vardakou, Maria; Salmon, Melissa; O'Maille, Paul E.; Ro, Dae-Kyun, E-mail: paul.omaille@sri.com, E-mail: daekyun.ro@ucalgary.ca2016
AbstractAbstract
[en] The Andes-endemic Barnadesioideae lineage is the oldest surviving and phylogenetically basal subfamily of the Asteraceae (Compositae), a prolific group of flowering plants with world-wide distribution (∼24,000 species) marked by a rich diversity of sesquiterpene lactones (STLs). Intriguingly, there is no evidence that members of the Barnadesioideae produce STLs, specialized metabolites thought to have contributed to the adaptive success of the Asteraceae family outside South America. The biosynthesis of STLs requires the intimate expression and functional integration of germacrene A synthase (GAS) and germacrene A oxidase (GAO) to sequentially cyclize and oxidize farnesyl diphosphate into the advanced intermediate germacrene A acid leading to diverse STLs. Our previous discovery of GAO activity conserved across all major subfamilies of Asteraceae, including the phylogenetically basal lineage of Barnadesioideae, prompted further investigation of the presence of the gateway GAS in Barnadesioideae. Herein we isolated two terpene synthases (BsGAS1/BsGAS2) from the basal Barnadesia spinosa (Barnadesioideae) that displayed robust GAS activity when reconstituted in yeast and characterized in vitro. Despite the apparent lack of STLs in the Barnadesioideae, this work unambiguously confirms the presence of GAS in the basal genera of the Asteraceae. Phylogenetic analysis reveals that the two BsGASs fall into two distinct clades of the Asteraceae's GASs, and BsGAS1 clade is only retained in the evolutionary closer Cichorioideae subfamily, implicating BsGAS2 is likely the ancestral base of most GASs found in the lineages outside the Barnadesioideae. Taken together, these results show the enzymatic capacities of GAS and GAO emerged prior to the subsequent radiation of STL-producing Asteraceae subfamilies. - Highlights: • Sesquiterpene lactones are characteristic metabolites in Asteraceae family. • Barnadesioideae is the basal lineage of all Asteraceae plants, producing sesquiterpene lactones. • Two germacrene A synthases (GASs) were identified and characterized from Barnadesia spinosa. • A phylogenetic analysis showed two sub-clades of GASs have evolved in Asteraceae. • GAS enzymes evolved prior to the divergence and global dispersal of the modern Asteraceae.
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S0006-291X(16)31650-3; Available from http://dx.doi.org/10.1016/j.bbrc.2016.09.165; Copyright (c) 2016 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
Journal
Biochemical and Biophysical Research Communications; ISSN 0006-291X;
; CODEN BBRCA9; v. 479(4); p. 622-627

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Zaldivar, E.
International Nuclear Law Association (INLA), Brussels (Belgium)1983
International Nuclear Law Association (INLA), Brussels (Belgium)1983
AbstractAbstract
[en] This paper concerns technology and technology transfers which are becoming increasingly important for developing countries, especially those in South America. The author also points out that developed countries have not implemented the United Nations resolutions concerning dissemination of knowledge on advanced technologies. He stresses that if South American States wish to obtain assistance with nuclear technology from developed countries they should sign and ratify the Non-Proliferation Treaty and the Tlatelolco Treaty. (NEA)
[fr]
Cette communication traite de la technologie et des transferts de technologie dont l'importance va en augmentant pour les pays en voie de developpement et notamment les pays latino-americains. L'auteur signale aussi l'inexecution de la part des nations developpees des resolutions adoptees par les Nations Unies visant a diffuser les connaissances technologiques avancees. Il insiste aussi sur le fait que si les Etats latino-americains veulent recevoir l'aide des pays developpes dans le domaine de la technologie nucleaire ils devraient conclure et ratifier le Traite de non-proliferation et le Traite de TlatelolcoPrimary Subject
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Source
1983; 17 p; Nuclear Inter Jura '83; San Francisco, CA (USA); 11-15 Sep 1983
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Miscellaneous
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AbstractAbstract
No abstract available
Original Title
Catalogo de Informes publicados
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Jul 1971; 54 p; Contains references of 288 reports published from 1958 to December 1970.
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Report
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Bibliography
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AbstractAbstract
No abstract available
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Journal Article
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Progress Report
Journal
Isotop. Radiat. Technol; v. 7 p. 465-468
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AbstractAbstract
[en] To the south of the San franciscana plate a number of tectonically interdigitated suspect terranes create a complex geological situation in which intercalated ancient, metasedimentary, metavolcanic, composite and granitic terranes are tectonically repeated. These terranes are briefly discussed here together with possible interpretations. (author)
Original Title
Terrenos suspeitos a sul da placa sanfranciscana (SE da plataforma sul americana)
Primary Subject
Source
Sociedad Uruguaya de Geologia, Montevideo (Uruguay); Facultad de Ciencias, Montevideo (Uruguay); 464 p; 1998; p. 1-6; 2. Uruguayan Geological Congress; II Congreso Uruguayo de Geologia; Montevideo (Uruguay); 13-18 May 1998; Available from: Library of The National Directorate of Mining and Geology, Montevideo, Uruguay E-mail: biblioteca@dinamige.miem.gub.uy
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Miscellaneous
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Conference
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No abstract available
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Published in summary form only.
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Journal Article
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IAEA Bulletin; ISSN 0020-6067;
; v. 26(1); p. 57

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AbstractAbstract
[en] The complexity of the admixture dynamics that shaped American populations is unveiled by Ongaro et al., where genetic data for more than 12,000 individuals from the continents are investigated. This study evaluates the dramatic impact of events after the colonial era, revealing a spatial and temporal heterogeneity and mirroring historical records. © 2019 Elsevier Ltd The human genetic diversity of the Americas has been affected by several events of gene flow that have continued since the colonial era and the Atlantic slave trade. Moreover, multiple waves of migration followed by local admixture occurred in the last two centuries, the impact of which has been largely unexplored. Here, we compiled a genome-wide dataset of ∼12,000 individuals from twelve American countries and ∼6,000 individuals from worldwide populations and applied haplotype-based methods to investigate how historical movements from outside the New World affected (1) the genetic structure, (2) the admixture profile, (3) the demographic history, and (4) sex-biased gene-flow dynamics of the Americas. We revealed a high degree of complexity underlying the genetic contribution of European and African populations in North and South America, from both geographic and temporal perspectives, identifying previously unreported sources related to Italy, the Middle East, and to specific regions of Africa. © 2019 Elsevier Ltd
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Available from http://vinar.vin.bg.ac.rs/handle/123456789/8662; Published version on this repository: http://vinar.vin.bg.ac.rs/handle/123456789/8654; OAI: vinar.vin.bg.ac.rs:123456789/8662; Country of input: Serbia
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Journal Article
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Current Biology; ISSN 0960-9822;
; v. 29(23); p. 3974-3986.e4

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AbstractAbstract
[en] Short communication
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