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Copyright of Brazilian Journal of Veterinary Science / Revista Brasileira de Ciência Veterinária is the property of Revista Brasileira de Ciencia Veterinaria and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The presente study searched for convergente validity evidence between three instruments for assessment of phonological awareness: Roteiro de Avaliação da Consciência Fonológica (RACF), Prova de Consciência Fonológica por Produção Oral (PCFO) and Consciência Fonológica: Instrumento de Avaliação Sequencial (CONFIAS). Previous studies have performed convergent validity analyzes between RACF and PCFO, but did not include CONFAS. Considering that CONFIAS is one of the most used instruments in studies on phonological awareness in Brazil, studies of convergence validity that include it become relevant. The study included 131 children of both sexes, aged between 6 and 8, attending six classes from the first to the third grade of elementary school - two classes from each school year - from a public school located in the metropolitan region of Rio de Janeiro. Participants were assessed individually using the RACF, PCFO and CONFIAS instruments. Regarding performance, children showed better results in RACF, then in CONFIAS and worse results in PCFO. The results indicate that the RACF may be more suitable for the screening of phonemic skills and CONFIAS may be more appropriate for a more complete assessment of syllabic and phonemic skills. As for convergent validity, there was a significant, positive and strong correlation between the scores of the three instruments, namely, RACF versus PCFO (r = 0.63), RACF versus CONFIAS (r = 0.69) and PCFO versus CONFIAS (r = 0.85), in addition, the instruments with the best correlation were CONFIAS and PCFO, possibly due to the type of tasks involved. Thus, it is concluded that the three instruments have convergence between them. [ABSTRACT FROM AUTHOR]

In this letter, we reported nickel substituted cobalt nano-ferrites of ∼ 5 nm particle size synthesized with forced hydrolysis methods. The magnitude of the anisotropy constant decreases from 6. 06 × 1 0 5 to 2. 45 × 1 0 4 erg/cm 3 due to the N i 2 + doping. Whereas the gradual increment of N i 2 + ions decreases the blocking temperature from ∼ 182 k to ∼ 52 K. The single-domain superparamagnetic behaviour observed here above the blocking temperature. This behaviour could help the material be a promising candidate in quantum technologies as a bit for storage devices. • Synthesis of nano ferrites within critical size limits. • Achieving single-domain structure in nickel substituted cobalt ferrites. • Transforming the ferrimagnetic into superparamagnetic ferrites. • Tuning the blocking temperature below the boiling point of liquid nitrogen. [ABSTRACT FROM AUTHOR]

Background West Nile virus (WNV) is an emergent pathogen that is widely distributed in North and Central America. The recent introduction in South America has focused attention on the spread of WNV across Southern American countries. The transmission network involves mosquitoes, birds, horses and humans. Methods The serological evaluation of sera from 678 equids and 478 birds was performed using a WNV-specific blocking ELISA, and only the positive results were confirmed by plaque reduction neutralisation tests (PRNTs). Molecular analysis was performed on sera from 992 healthy equids and on 63 macerates of brains from equids that died of encephalitis and had previously tested negative for other pathogens. We also tested swabs from 928 birds. The samples analysed were collected in different biomes of Brazil. Results We identified WNV antibodies by ELISA in thirteen equids and five birds, and PRNT90 confirmed WNV positivity in four equid samples collected in 2009 in an area between the Amazon and the Pantanal. None of the ELISA positive bird samples were confirmed by PRNT90, and all samples tested by RT-PCR were negative. Conclusion WNV circulation is confirmed by this large scale survey even in the absence of detection of clinical cases. [ABSTRACT FROM AUTHOR]

Copyright of Revista de Pesquisa: Cuidado é Fundamental is the property of Revista de Pesquisa: Cuidado e Fundamental Online and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)