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Strain-inducing photochemical chlorination of graphene nanoribbons on SiC (0001)
2020
Nanotechnology
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ORCID iDs Gabriela Copetti https:/ /orcid.org/0000-0003-3418-8841 Taís O Feijó https:/ /orcid.org/0000-0002-5336-6036 Martin Heilmann https:/ /orcid.org/0000-0002-5485-1244 Gabriel V Soares https:/ /orcid.org ...
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)
2020
International Conference on Concurrency Theory
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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
doi:10.4230/lipics.concur.2020.1
dblp:conf/concur/AlvimFMN20
fatcat:2orz6scuevbutjlrqaahbry4om
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... 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.
Theoretical and experimental analysis of RHS/CHS K gap joints
2013
Rem : Revista Escola de Minas
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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
2016
Revista Brasileira de Engenharia Agrícola e Ambiental - Agriambi
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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
2019
Journal of Virology
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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.
doi:10.1128/jvi.01127-19
pmid:31801869
pmcid:PMC7022353
fatcat:quilkutowjgjdcge5km5unubei
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... 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.
New Heteroleptic Ruthenium(II) Complexes with Sulfamethoxypyridazine and Diimines as Potential Antitumor Agents
2019
Molecules
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(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
2021
Revista Brasileira de Engenharia Agrícola e Ambiental - Agriambi
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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
2017
Cytotechnology (Dordrecht)
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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]
2022
arXiv
pre-print
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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
arXiv:2204.13734v3
fatcat:2qk4cyygtnenfbpzruzv346j5q
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... 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.
Mechanism of Heparin Acceleration of Tissue Inhibitor of Metalloproteases-1 (TIMP-1) Degradation by the Human Neutrophil Elastase
2011
PLoS ONE
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/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
2021
Hydrological Processes
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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
2017
PLoS ONE
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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]
2022
medRxiv
pre-print
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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
doi:10.1101/2022.06.16.22276483
fatcat:vzldt74nnfhdtibvhuxju5m77y
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... 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.
Genome-wide signatures of complex introgression and adaptive evolution in the big cats
2017
Science Advances
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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
2019
Figshare
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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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