Cariri Paraibano: Tourism in Cabaceiras, Pernambuco
In: Rosa dos Ventos: revista do Programa de Pós-Graduação Mestrado em Turismo, Universidade de Caxias do Sul, Band 9, Heft 1, S. 120-132
ISSN: 2178-9061
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In: Rosa dos Ventos: revista do Programa de Pós-Graduação Mestrado em Turismo, Universidade de Caxias do Sul, Band 9, Heft 1, S. 120-132
ISSN: 2178-9061
The layered rare-earth diantimonides RSb2 are anisotropic metals with generally low electronic densities whose properties can be modified by substituting the rare earth. LaSb2 is a nonmagnetic metal with a low residual resistivity presenting a low-temperature magnetoresistance that does not saturate with the magnetic field. It has been proposed that the latter can be associated to a charge density wave (CDW), but no CDW has yet been found. Here we find a kink in the resistivity above room temperature in LaSb2 (at 355 K) and show that the kink becomes much more pronounced with substitution of La by Ce along the La1−xCexSb2 series. We find signatures of a CDW in x-ray scattering, specific heat, and scanning tunneling microscopy (STM) experiments in particular for x ≈ 0.5. We observe a distortion of rare-earth–Sb bonds lying in-plane of the tetragonal crystal using x-ray scattering, an anomaly in the specific heat at the same temperature as the kink in resistivity and charge modulations in STM. We conclude that LaSb2 has a CDW which is stabilized in the La1−xCexSb2 series due to substitutional disorder ; This work was supported by the Spanish MINECO (FIS2014-54498-R, MAT2011-27470-C02-02, and CSD-2009-00013), by the European Union (Graphene Flagship Contract No. CNECT-ICT-604391 and COST MP1201 action), and by the Comunidad de Madrid through programs Nanofrontmag-CM (S2013/MIT-2850) and MAD2D-CM (S2013/MIT-3007).We acknowledge MINECO and CSIC for financial support and for provision of synchrotron radiation facilities and would like to thank the SpLine BM25 staff for assistance in using the beamline
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In: Semina: revista cultural e científica da Universidade Estadual de Londrina. Ciências agrárias, Band 36, Heft 3, S. 1685
ISSN: 1679-0359
In: Environmental science and pollution research: ESPR, Band 21, Heft 5, S. 3706-3712
ISSN: 1614-7499
In: Semina: revista cultural e científica da Universidade Estadual de Londrina. Ciências agrárias, Band 32, Heft 3, S. 1083-1094
ISSN: 1679-0359
In: EFSA supporting publications, Band 7, Heft 1
ISSN: 2397-8325
In: TLRHAMERICAS-D-22-00059
SSRN
In: GEODER-D-21-02634
SSRN
Drosophila melanogaster is an important model for antiviral immunity in arthropods, but very few DNA viruses have been described from the family Drosophilidae. This deficiency limits our opportunity to use natural host-pathogen combinations in experimental studies, and may bias our understanding of the Drosophila virome. Here, we report fourteen DNA viruses detected in a metagenomic analysis of 6668 pool-sequenced Drosophila, sampled from forty-seven European locations between 2014 and 2016. These include three new nudiviruses, a new and divergent entomopoxvirus, a virus related to Leptopilina boulardi filamentous virus, and a virus related to Musca domestica salivary gland hypertrophy virus. We also find an endogenous genomic copy of galbut virus, a double-stranded RNA partitivirus, segregating at very low frequency. Remarkably, we find that Drosophila Vesanto virus, a small DNA virus previously described as a bidnavirus, may be composed of up to twelve segments and thus represent a new lineage of segmented DNA viruses. Two of the DNA viruses, Drosophila Kallithea nudivirus and Drosophila Vesanto virus are relatively common, found in 2 per cent or more of wild flies. The others are rare, with many likely to be represented by a single infected fly. We find that virus prevalence in Europe reflects the prevalence seen in publicly available datasets, with Drosophila Kallithea nudivirus and Drosophila Vesanto virus the only ones commonly detectable in public data from wild-caught flies and large population cages, and the other viruses being rare or absent. These analyses suggest that DNA viruses are at lower prevalence than RNA viruses in D.melanogaster, and may be less likely to persist in laboratory cultures. Our findings go some way to redressing an earlier bias toward RNA virus studies in Drosophila, and lay the foundation needed to harness the power of Drosophila as a model system for the study of DNA viruses. ; M.W. was supported by the UK Natural Environmental Research Council through the E3 doctoral training programme (NE/L002558/1), and S.R. was supported by Wellcome Trust PhD programme (108905/Z/15/Z). A.B. received funding from BBSRC (grant number BB/P00685X/1). T.F. received funding from Swiss National Science Foundation (grant numbers 31003A-182262, PP00P3_165836, and PP00P3_133641/1). C.G. received funding from Agence Nationale de la Recherche (grant number ANR-15-CE32-0011-01). J.G. received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (H2020-ERC-2014-CoG-647900) and from the Fundación Española para la Ciencia y la Tecnologia-Ministerio de Economía y Competitividad (FCT-15-10187). S.G. received funding from Deutsche Forschungsgemeinschaft (grant number GR 4495/2). M.K. received funding from Academy of Finland projects (268214 and 322980). M.K. received funding from Austrian Science Fund (FWF; grant number P32275). V.L. received funding from Danish Research council for natural Sciences (FNU; grant number 4002-00113B). B.S.O. received funding from the Scientific and Technological Research Council of Turkey (TUBITAK; grant number 214Z238). J.P. received funding from Deutsche Forschungsgemeinschaft (grant number PA 903/8). M.S.-R., M.S.V., and M.J. received funding from the Ministry of Education, Science and Technological Development of the Republic of Serbia (grant number 451-03-68/2020-14/200178). F.S. received funding from Deutsche Forschungsgemeinschaft (grant number STA1154/4-1; Projektnummer 408908608). M.T., A.P., and K.E. received funding from the Ministry of Education, Science and Technological Development of the Republic of Serbia (grant number 451-03-68/2020-14/200007). The DrosEU consortium has been funded by a Special Topics Network (STN) grant by the European Society of Evolutionary Biology (ESEB). ; Peer reviewed
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Espaço público, política e ação comunicativa a partir da concepção habermasiana / Luiz Ademir de Oliveira (UFSJ) e Adélia Barroso Fernandes (UNIBH) -- Aspectos da comunicação política na cultura da convergência / Celene Fidelis Frias Ferreira e Daniela Soares Pereira (UFTO) -- Propaganda política e favela: uma leitura do papel das lideranças locais nos anos de 2008 e 2010 / Adolpho Queiroz (Mackenzie) e Rodrigo César Vieira (Unimar) -- Movimentos sociais em Ribeirão Preto e Araraquara: um estudo de caso do aumento dos salários dos vereadores em 2012 / Maria Leanor de Castro Ayala (Unesp) -- Contribuições para o exercício da democracia através dos movimentos sociais virtuais de atuação global: os avanços conquistados pela comunidade Avaaz / Jeferson Thauny (UFPR) -- Websites eleitorais como instrumentos para o cibermarketing, o voto informado ou a participação cidadã? O uso de webs pelos candidatos ao ayuntamiento de Madrid no pleito 2011 / Sylvia Iasulaitis (UFSCar) e Carmen Pineda Nebot (Unesp) -- Conexão e ação: a utilização da internet pela "Marcha das Vadias" para mobilização social e ação coletiva no espaço virtual e no território urbano / José Geraldo da Silva Junior (UFPR) -- Ciclistas, propaganda e eleições 2012: um estudo sobre deliberação e engajamento político na esfera pública online / Victor Kraide Real (USP) -- Movimento estudantil no ciberespaço: a mobilização política em redes sociais / Rose Mara Vidal de Souza e Isley Borges da Silva Junior (UFU) -- Comunicar para mobilizar: a campanha McDia Feliz no Brasil / Thaís Mocelin (UFPR)
World Affairs Online
In: Substance use & misuse: an international interdisciplinary forum, Band 57, Heft 9, S. 1365-1373
ISSN: 1532-2491
In: Semina: revista cultural e científica da Universidade Estadual de Londrina. Ciências agrárias, Band 42, Heft 1, S. 105-122
ISSN: 1679-0359
The aim of this study was to determine the rate of node appearance (RNA), the final number of nodes (FNN) and the period of node emission (PNE) in two buckwheat cultivars (Fagopyrum esculentum Moench) for different sowing dates, and to check variability in the RNA, FNN and PNE between the cultivars and sowing dates. The IPR91-Baili and IPR92-Altar cultivars were evaluated for 29 and 31 sowing dates from October to May in the 2017/2018 and 2018/2019 agricultural years respectively. In each experiment, a completely randomised design with five replications was used. The number of nodes (NN) on the main stem was counted twice a week in each plant (replication), from emission of the first node until the end of the cycle. The linear regression (y = a + bx) of the number of nodes (NN, y) was adjusted for each plant based on the number of days after emergence (DAE, x). The rate of node appearance (RNA), in days node-1, was determined from the inverse of the slope of the linear regression between NN and DAE (RNA = 1/b). The RNA was calculated for the period of node emission (PNE, in days), i.e. from emergence to emission of the last node. The final number of nodes (FNN) was counted at the end of node emission. Variability was found in the rate of node appearance (RNA), the final number of nodes (FNN) and the period of node emission (PNE) between the cultivars and sowing dates. The rate of node appearance ranges between 2.20 and 8.23 days node-1, the final number of nodes between 2.20 and 17.20, and the period of node emission between 16.60 and 49.20 days. Plants of the IPR91-Baili and IPR92-Altar cultivars show better vegetative development (lower RNA, higher FNN and greater PNE) when sown in November, December, January and February, compared to those sown in October, March, April and May.
In: Ecotoxicology and environmental safety: EES ; official journal of the International Society of Ecotoxicology and Environmental safety, Band 204, S. 111036
ISSN: 1090-2414
In: Semina: revista cultural e científica da Universidade Estadual de Londrina. Ciências agrárias, Band 41, Heft 6, S. 2541-2541
ISSN: 1679-0359
Crop rotation is one of the pillars of conservation agriculture. This practice has offered a series of advantages in terms of improving soil physical, chemical, and biological conditions. These advantages result in yield increases for all economic crops involved in the rotation systems and may also reduce production costs. In this context, the aim of this study was to compare the profitability of crop rotation systems with different levels of crop diversification. The experimental design was randomized blocks, with five treatments and four replications. The treatments included one less diversified crop rotation system (control) with soybean and wheat and four more diversified crop rotation systems (involving three or more species), including soybean, wheat, black oats, maize, canola, barley, blue lupine, white oats, beans, radish, triticale, rye, hairy vetch, and sorghum, under no-tillage conducted during a three-year cycle. Analyses were conducted considering productivity, operating cost, and economic profit. The highest accumulated gross yields were obtained in the more diversified crop rotation systems. The results show that the more diversified crop rotation systems were more profitable. When the opportunity cost was included, the most diversified crop rotations presented greater economic feasibility. The less diversified crop rotation system presented a negative economic profit. The crop rotation systems including beans presented the highest economic profit.
In: Semina: revista cultural e científica da Universidade Estadual de Londrina. Ciências agrárias, Band 41, Heft 6, S. 2793-2802
ISSN: 1679-0359
The edible coating of chitosan with clove essential oil (CEO) was studied for its ability to reduce the microbial growth of pathogens (Escherichia coli O157:H7 CDCEDL933, Listeria monocytogenes CERELA, Salmonella Enteritidis ATCC13076, Staphylococcus aureus ATCC43300, and Pseudomonas aeruginosa ATCC27853) in Tambaqui fillets kept under refrigeration. In in vitro tests, chitosan showed higher antimicrobial activity against S. aureus and L. monocytogenes (MIC 0.5%), and CEO for L. monocytogenes (MIC 0.08%). Based on the antimicrobial activity of chitosan and CEO, Tambaqui fillets were subjected to different treatments, T1: chitosan 2%; T2: chitosan 2% + CEO 0.16%, and T3: chitosan 0.5% + CEO 0.08%, kept at 4 ºC for 72 h. The chitosan coating, incorporated with CEO, inhibited microorganisms in Tambaqui fillets and enhanced coating efficiency (p < 0.05). It was most effective against L. monocytogenes and S. aureus at the lowest CEO concentration (0.08%). Chitosan coating in combination with CEO enhanced the antimicrobial effect of pathogens on Tambaqui fillets, increased their shelf life under refrigeration, and was more effective against Gram-positive pathogens than Gram-negative pathogens.