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Strain-inducing photochemical chlorination of graphene nanoribbons on SiC (0001)

Gabriela Copetti, Eduardo H Nunes, Taís Orestes Feijó, Lauren A Galves, Martin Heilmann, Gabriel Vieira Soares, J Marcelo Lopes, Cláudio Radtke
2020 Nanotechnology  
ORCID iDs Gabriela Copetti https:/ / Taís O Feijó https:/ / Martin Heilmann https:/ / Gabriel V Soares https:/ /  ...  The Cl 2 gas was produced from the reaction 4HCl +MnO 2 →Cl 2 +MnCl 2 +2H 2 O.  ...  The samples are then placed in a RF inductive furnace and etched with forming gas (5 at% H 2 and 95 at% Ar) at 1400°C in Ar flux of 500 sccm (900 mbar) for 15 min.  ... 
doi:10.1088/1361-6528/abd43a pmid:33326949 fatcat:i44k63x4czfjrl4amwo4dmrcqm

On Privacy and Accuracy in Data Releases (Invited Paper)

Mário S. Alvim, Natasha Fernandes, Annabelle McIver, Gabriel H. Nunes, Laura Kovács, Igor Konnov
2020 International Conference on Concurrency Theory  
In this paper we study the relationship between privacy and accuracy in the context of correlated datasets. We use a model of quantitative information flow to describe the the trade-off between privacy of individuals' data and and the utility of queries to that data by modelling the effectiveness of adversaries attempting to make inferences after a data release. We show that, where correlations exist in datasets, it is not possible to implement optimal noise-adding mechanisms that give the best
more » ... possible accuracy or the best possible privacy in all situations. Finally we illustrate the trade-off between accuracy and privacy for local and oblivious differentially private mechanisms in terms of inference attacks on medium-scale datasets.
doi:10.4230/lipics.concur.2020.1 dblp:conf/concur/AlvimFMN20 fatcat:2orz6scuevbutjlrqaahbry4om

Theoretical and experimental analysis of RHS/CHS K gap joints

Iara Souto Mayor, Gabriel Vieira Nunes, Arlene M. S. Freitas, João A. V. Requena, Afonso H. Araújo
2013 Rem : Revista Escola de Minas  
Δ Δ A B Figure 6 Deformation limit criteria to ultimate load -N num (Nunes, 2012) .  ...  Figure 7 shows a good agreement between the numerical and experimental results (Nunes, 2012) .  ... 
doi:10.1590/s0370-44672013000300005 fatcat:uhnr2e7ygjc5dgcmqvzjz2smaa

Preservation of roasted and ground coffee during storage. Part 2: Bulk density and intergranular porosity

Paulo C. Corrêa, Gabriel H. H. de Oliveira, Wander L. Vasconcelos, Guillermo A. Vargas-Elías, Fábio L. Santos, Eduardo H. M. Nunes
2016 Revista Brasileira de Engenharia Agrícola e Ambiental - Agriambi  
The initial moisture content of the beans was determined through gravimetry using a forced-air circulation oven at 105 ± 1 °C for 24 h in triplicate.  ... 
doi:10.1590/1807-1929/agriambi.v20n7p666-671 fatcat:mqaphrjwgnb2dbsowbxushjtna

The evolutionary dynamics of Oropouche Virus in South America

Bernardo Gutierrez, Emma L. Wise, Steven T. Pullan, Christopher H. Logue, Thomas A. Bowden, Marina Escalera-Zamudio, Gabriel Trueba, Marcio R. T. Nunes, Nuno R. Faria, Oliver G. Pybus
2019 Journal of Virology  
The Amazon basin is home to numerous arthropod-borne viral pathogens that cause febrile disease in humans. Among these, Oropouche orthobunyavirus (OROV) is a relatively understudied member of the genus Orthobunyavirus, family Peribunyaviridae, that causes periodic outbreaks in human populations in Brazil and other South American countries. Although several studies have described the genetic diversity of the virus, the evolutionary processes that shape the OROV genome remain poorly understood.
more » ... re we present a comprehensive study of the genomic dynamics of OROV that encompasses phylogenetic analysis, evolutionary rate estimates, inference of natural selective pressures, recombination and reassortment, and structural analysis of OROV variants. Our study includes all available published sequences, as well as a set of new OROV genomes sequences obtained from patients in Ecuador, representing the first set of genomes from this country. Our results show differing evolutionary processes on the three segments that comprise the viral genome. We infer differing times of the most recent common ancestors (TMRCAs) of the genome segments and propose this can be explained by cryptic reassortment. We also present the discovery of previously unobserved putative N-linked glycosylation sites, and codons that evolve under positive selection on the viral surface proteins, and discuss the potential role of these features in the evolution of OROV through a combined phylogenetic and structural approach. Importance The emergence and re-emergence of pathogens such as Zika virus (ZIKV), Chikungunya virus (CHIKV) and yellow fever virus (YFV) have drawn attention towards other co-circulating arboviruses in South America. Oropouche virus (OROV) is a poorly-studied pathogen responsible for over a dozen outbreaks since the early 1960s, and represents a public health burden to countries such as Brazil, Panama and Peru. OROV is likely underreported as its symptomatology can be easily confounded with other febrile illnesses (e.g. dengue fever and leptospirosis), and point-of-care testing for the virus is still uncommon. With limited data, there is a need to optimise the information currently available. Analysis of OROV genomes can help us understand how the virus circulates in nature and can reveal the evolutionary forces that shape the genetic diversity of the virus, which has implications for molecular diagnostics and the design of potential vaccines.
doi:10.1128/jvi.01127-19 pmid:31801869 pmcid:PMC7022353 fatcat:quilkutowjgjdcge5km5unubei

New Heteroleptic Ruthenium(II) Complexes with Sulfamethoxypyridazine and Diimines as Potential Antitumor Agents

Ariane C.C. de Melo, Jaime M.S.V.P. Santana, Kelen J.R.C. Nunes, Bernardo L. Rodrigues, Nathalia Castilho, Philipe Gabriel, Adolfo H. Moraes, Mayra de A. Marques, Guilherme A.P. de Oliveira, Ívina P. de Souza, Hernán Terenzi, Elene C. Pereira-Maia
2019 Molecules  
(dmso-d6) δ 6.09-9.78 (22H, m) δ 3.54 (3H, s) δ 5.55 (2H, s) δ 3.85 (1H, s) δ 2.16 (1H, s) δ 1.01 (6H, s).  ...  Anal. calc. for [Ru(C 10 H 8 N 2 ) 2 C 11 H 11 N 4 O 3 S](PF 6 ) · 0.4 H 2 O (845.49 g mol −1 ): C 44.07, H 3.32, N 13.26, found C 43.64, H 3.64, N 13.43.  ... 
doi:10.3390/molecules24112154 fatcat:u5mqz35a2zh23ixccjhhuhqcaa

Phothochemical quenching is indicative of ionic stress on 'Tahiti' acid lime grafted on citrus genotypes

Tainá A. da Silva, Marcos E. B. Brito, Ivens H. da Conceição, Ericlis D. S. Nunes, Darvina S. Souza, Gabriel M. Oliveira
2021 Revista Brasileira de Engenharia Agrícola e Ambiental - Agriambi  
HIGHLIGHTS Salinity increases photochemical heat loss in citrus plants. Genotypes that provide great tolerance lose less energy. 'Tahiti' acid lime can be grown under moderate natural salinity when tolerant rootstocks are used.
doi:10.1590/1807-1929/agriambi.v25n6p409-414 fatcat:yaud6j43rjh4zmtmfjzhaqrcjm

Generation and characterization of transgenic mouse mesenchymal stem cell lines expressing hIGF-1 or hG-CSF

Gabrielle V. M. Gonçalves, Daniela N. Silva, Rejane H. Carvalho, Bruno S. F. Souza, Kátia Nunes da Silva, Juliana F. Vasconcelos, Bruno D. Paredes, Carolina K. V. Nonaka, Ricardo Ribeiro-dos-Santos, Milena B. P. Soares
2017 Cytotechnology (Dordrecht)  
Assessment of cell proliferation was done by adding 3 H-thymidine for 18 h followed by quantification of 3 H-thymidine uptake.  ...  After 48 h of incubation, plates were pulsed with 1 lCi of methyl-3 H-thymidine (PerkinElmer, Amersham, Little Chalfont, England) for 18 h.  ... 
doi:10.1007/s10616-017-0131-2 pmid:28866844 fatcat:u4mgvhfravcypj2jolzq6p6dmq

Flexible and scalable privacy assessment for very large datasets, with an application to official governmental microdata [article]

Mário S. Alvim, Natasha Fernandes, Annabelle McIver, Carroll Morgan, Gabriel H. Nunes
2022 arXiv   pre-print
We present a systematic refactoring of the conventional treatment of privacy analyses, basing it on mathematical concepts from the framework of Quantitative Information Flow (QIF). The approach we suggest brings three principal advantages: it is flexible, allowing for precise quantification and comparison of privacy risks for attacks both known and novel; it can be computationally tractable for very large, longitudinal datasets; and its results are explainable both to politicians and to the
more » ... ral public. We apply our approach to a very large case study: the Educational Censuses of Brazil, curated by the governmental agency INEP, which comprise over 90 attributes of approximately 50 million individuals released longitudinally every year since 2007. These datasets have only very recently (2018-2021) attracted legislation to regulate their privacy -- while at the same time continuing to maintain the openness that had been sought in Brazilian society. INEP's reaction to that legislation was the genesis of our project with them. In our conclusions here we share the scientific, technical, and communication lessons we learned in the process.
arXiv:2204.13734v3 fatcat:2qk4cyygtnenfbpzruzv346j5q

Mechanism of Heparin Acceleration of Tissue Inhibitor of Metalloproteases-1 (TIMP-1) Degradation by the Human Neutrophil Elastase

Gabriel L. C. Nunes, Alyne Simões, Fábio H. Dyszy, Claudio S. Shida, Maria A. Juliano, Luiz Juliano, Tarsis F. Gesteira, Helena B. Nader, Gillian Murphy, Alain F. Chaffotte, Michel E. Goldberg, Ivarne L. S. Tersariol (+2 others)
2011 PLoS ONE  
/H 2 O (1:90:10).  ...  Scheme I /À k -1 zz H H K d ? KH d ? EH /À kh -1 zS À? kh 1 { EHS À? kh 2 { EHS 0 zP1 À?  ... 
doi:10.1371/journal.pone.0021525 pmid:21731773 pmcid:PMC3121799 fatcat:iewj3smk7benxohmatuw5ro3qa

Scientists' warning on extreme wildfire risks to water supply

François‐Nicolas Robinne, Dennis W. Hallema, Kevin D. Bladon, Mike D. Flannigan, Gabrielle Boisramé, Christian M. Bréthaut, Stefan H. Doerr, Giuliano Di Baldassarre, Louise Gallagher, Amanda K. Hohner, Stuart J. Khan, Alicia M. Kinoshita (+10 others)
2021 Hydrological Processes  
As such, post-fire outcomes for the US and Australia do not directly apply to Chile, India, or Canada (Nunes et al., 2018).  ... 
doi:10.1002/hyp.14086 pmid:34248273 pmcid:PMC8251805 fatcat:tux3l5wn4ragtgqhxahg57n6ry

Field trial of efficacy of the Leish-tec® vaccine against canine leishmaniasis caused by Leishmania infantum in an endemic area with high transmission rates

Gabriel Grimaldi, Antonio Teva, Claudiney B. dos-Santos, Fernanda Nunes Santos, Israel de-Souza Pinto, Blima Fux, Gustavo Rocha Leite, Aloísio Falqueto, Henk D. F. H. Schallig
2017 PLoS ONE  
Moreover, more extensive pathology found in their spleen (E-G), skindraining lymph node (H) and ear-skin (I) included an aggregation of activated macrophages associated with the presence of parasitized  ...  49 infected dogs, 38 (78%) were euthanized (27 cases suffering from clinically Fig 3 . 3 Histopathological changes in affected tissues of control (images A, C, E, I) and vaccinated (images B, D, F-H)  ... 
doi:10.1371/journal.pone.0185438 pmid:28953944 pmcid:PMC5617193 fatcat:3u2m6iiifnci3k4ewq3kr445lm

Predicting SARS-CoV-2 variant spread in a completely seropositive population using semi-quantitative antibody measurements in blood donors [article]

Lewis F Buss, Carlos A. Prete, Charles Whittaker, Tassila Salomon, Marcio K Oikawa, Rafael H. M. Pereira, Isabel C. G. Moura, Lucas Delerino, Rafael F. O. Franca, Fabio Miyajima, Alfredo Mendrone-Junior, Cesar de Almeida Neto (+29 others)
2022 medRxiv   pre-print
SARS-CoV-2 serologic surveys estimate the proportion of the population with antibodies against historical variants which nears 100% in many settings. New analytic approaches are required to exploit the full information in serosurvey data. Method Using a SARS-CoV-2 anti-Spike (S) protein chemiluminescent microparticle assay, we attained a semi-quantitative measurement of population IgG titres in serial cross-sectional monthly samples of routine blood donations across seven Brazilian state
more » ... s (March 2021-November 2021). In an ecological analysis (unit of analysis: age-city-calendar month) we assessed the relative contributions of prior attack rate and vaccination to antibody titre in blood donors. We compared blood donor anti-S titre across the seven cities during the growth phase of the Delta variant of concern (VOC) and use this to predict the resulting age-standardized incidence of severe COVID-19 cases. Results On average we tested 780 samples per month in each location. Seroprevalence rose to >95% across all seven capitals by November 2021. Driven proximally by vaccination, mean antibody titre increased 16-fold over the study. The extent of prior natural infection shaped this process, with the greatest increases in antibody titres occurring in cities with the highest prior attack rates. Mean anti-S IgG was a strong predictor (adjusted R2 =0.89) of the number of severe cases caused by the Delta VOC in the seven cities. Conclusions Semi-quantitative anti-S antibody titres are informative about prior exposure and vaccination coverage and can inform on the potential impact of future SARS-CoV-2 variants.
doi:10.1101/2022.06.16.22276483 fatcat:vzldt74nnfhdtibvhuxju5m77y

Genome-wide signatures of complex introgression and adaptive evolution in the big cats

Henrique V. Figueiró, Gang Li, Fernanda J. Trindade, Juliana Assis, Fabiano Pais, Gabriel Fernandes, Sarah H. D. Santos, Graham M. Hughes, Aleksey Komissarov, Agostinho Antunes, Cristine S. Trinca, Maíra R. Rodrigues (+21 others)
2017 Science Advances  
S C I E N C E A D V A N C E S | R E S E A R C H A R T I C L E Figueiró et al., Sci.  ...  S C I E N C E A D V A N C E S | R E S E A R C H A R T I C L E Figueiró et al., Sci.  ... 
doi:10.1126/sciadv.1700299 pmid:28776029 pmcid:PMC5517113 fatcat:m6ktsgyzkzbxhk46mqsk4uido4

Supplemental Material1 - Supplemental material for Sustainability Agenda for the Pantanal Wetland: Perspectives on a Collaborative Interface for Science, Policy, and Decision-Making

Walfrido M. Tomas, Fabio De Oliveira Roque, Ronaldo G. Morato, Patricia Emilia Medici, Rafael M. Chiaravalloti, Fernando R. Tortato, Jerry M. F. Penha, Thiago J. Izzo, Leticia C. Garcia, Reinaldo F. F. Lourival, Pierre Girard, Nelson R. Albuquerque (+102 others)
2019 Figshare  
Nunes, Catia da Nunes da Cunha, Marcia D. Oliveira, Maxwell R. Oliveira, Gecele M. Paggi, Aiesca O. Pellegrin, Guellity M. F. Pereira, Igor A. H. F. S. Peres, João B. Pinho, Joao O. P.  ...  Eaton, Gabriel P. Faggioni, Maria A. Farinaccio, Julio F. A. Fernandes, Vanda L. Ferreira, Erich A. Fischer, Carlos E. Fragoso, Gabriel O. Freitas, Fabio Galvani, Aurea S. Garcia, Carolina M.  ... 
doi:10.25384/sage.9884798.v1 fatcat:qft5wl6jhbcixblrjfds3jylv4
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