326 research outputs found
Diallel analysis of upland cotton cultivars
Crosses involving eight commercial upland cotton cultivars were performed in all possible combinations togenerate 28 hybrids. The eight parental genotypes were also evaluated. A field experiment was conducted using a triple Laticedesign (6 x 6) in Itumbiara, Brazil, during the 2000/01 growing season. Data of the following agronomic and fiber traits werecollected: seedcotton yield, lint yield, seed index, picked lint percent, index of production and earliness, micronaire index, fiberstrength, fiber length, uniformity index, short-fiber index, fiber elongation, CSP index, reflectance and yellowness and used inthe analysis of variance as proposed by Griffing (1956), method 4. Significant differences were detected among treatments andthe estimates of combining abilities. Additive gene action prevailed for most traits studied. Both positive and negative heteroticvalues were detected, demonstrating the potential of hybrid combinations for trait improvement in breeding programs
O SURDO COMO ABJETO: UMA ANĂLISE QUEER DAS RELAĂĂES BINĂRIAS OUVINTES/SURDOS.
A histĂłria dos/as surdos/as carrega um grande fardo de estigmas moldados em discursos que os/as inferiorizam, os/as tornando sujeitos perifĂ©ricos, subalternos e abjetos na sociedade normativamente ouvinte. Tais discursos ultrapassam a histĂłria e se repetem incorporando nos sujeitos surdos, certa precariedade e inferioridade que engendram seus corpos. Brigando com esses discursos, este trabalho tem por objetivo mostrar como os sujeitos surdos sĂŁo produzidos em detrimento de normalizaçÔes impostas de uma cultura ouvinte. AtravĂ©s das formulaçÔes crĂticas e estratĂ©gicas da teoria Queer - tendo em vista, ser esta uma teoria analĂtica das normalizaçÔes que moldam corpos e subjetividades estabelecendo relaçÔes de poder entre os seus interagentes â questionaremos as formas de normalizaçÔes micropolĂticas que se impĂ”em aos/as surdos/as pela cultura ouvinte. O intentio deste trabalho se resume a uma reflexĂŁo teĂłrico-analĂtica que questiona a subalternidade e a abjeção dos sujeitos surdos em nossa cultura
AnĂĄlise de Sinais de Emissao AcĂșstica e EstatĂstica Counts na Detecção da Alteração Microestrutural na Retificação de Aço 1045
Grinding is a high-precision, high-value-added finishing process as it is usually the last stage of the manufacturing chain. However, unsatisfactory results may occur, mainly due to changes in the microstructure of the ground workpiece. Such changes are caused by the high temperatures involved in the process due to the grinding conditions in which the part was subjected. In this way, the main objective of this work is the monitoring of the grinding process in order to detect changes in the signal and to relate them with damage occurred in the ground workpiece. The tests were carried out on a surface grinding machine, aluminum oxide grinding wheel and ABNT 1045 steel parts. Metallography was performed on the parts for a more further analysis of their microstructure. The recording of signals was obtained at a sample rate of 2 MHz through an acoustic emission sensor (AE). A frequency study for the selection of the best frequency bands that characterize damage occurred in the ground workpiece. The event counts statistic was applied to the filtered signal in the chosen frequency bands. The results of this work show that the grinding conditions influence the signal and, therefore, its frequency spectrum.Keywords: Manufacturing process; automation, monitoring; grinding process; acoustic emission, damage detectio
Pulmonary hemorrhage in dengue: differential diagnosis with acute viral respiratory syndromes including COVID-19
Clinical similarities among viral diseases become even more relevant considering the current scenario, especially in Brazil, where there is a high incidence of these diseases and overlapping seasonality. We report the case of a patient with acute clinical manifestations composed of predominant respiratory symptoms and alveolar hemorrhage in which three etiologies (dengue, influenza and COVID-19) were investigated concomitantly. Only the diagnosis of dengue was confirmed. Then, the patientâs immunological profile in response to stimulation of mononuclear cells with dengue virus antigen was analyzed in an attempt to identify specific characteristics that could be associated with the clinical manifestation
Primeros registros de Cercosaura parkeri (Ruibal, 1952) (Sauria, Gymnophthalmidae) en la ecorregiĂłn Chaco Seco de Argentina
En este trabajo se da a conocer la presencia de C. parkeri para las provincias de Chaco, Formosa y Santa Fe, y confirmamos su presencia para Santiago del Estero con material de referencia. Las nuevas localidades amplĂan el rango de distribuciĂłn de la especie hacia el Este, en un radio aproximado de 450 km. AdemĂĄs, se destaca la presencia de la especie en ambientes de Argentina con otra morfologĂa geogrĂĄfica y ecolĂłgica, diferente al de Yungas.AsociaciĂłn HerpetolĂłgica Argentin
Primeros registros de Cercosaura parkeri (Ruibal, 1952) (Sauria, Gymnophthalmidae) en la ecorregiĂłn Chaco Seco de Argentina
Cercosaura parkeri se distribuye en Argentina, Bolivia (que incluye su localidad tipo: Buena Vista, departamento de Santa Cruz), Brasil y PerĂș (Ruibal, 1952; Viñas y Daneri, 1991). El estado taxonĂłmico de algunas poblaciones se encuentra en revisiĂłn y probablemente represente un complejo de varias especies (Ribeiro-JĂșnior y Amaral, 2017). En Argentina, ha sido citada para las provincias de Catamarca, Jujuy, Salta y TucumĂĄn (Viñas y Daneri, 1991; Abdala et al., 2012), particularmente en la ecorregiĂłn de selvas de Yungas (Morello et al., 2012). Para Santiago del Estero su presencia fue incierta y no se conocĂan ejemplares de referencia. Sin embargo, fue incluida en un mapa de distribuciĂłn por Cei (1993) y en una lista de especies de Argentina por Ăvila et al. (2013), pero no fue considerada por otros autores tales como Abdala et al. (2012) y Cabrera et al. (2019). En este trabajo se da a conocer la presencia de C. parkeri para las provincias de Chaco, Formosa y Santa Fe, y confirmamos su presencia para Santiago del Estero con material de referencia (Fig. 1). Las nuevas localidades amplĂan el rango de distribuciĂłn de la especie hacia el Este, en un radio aproximado de 450 km. AdemĂĄs, se destaca la presencia de la especie en ambientes de Argentina con otra morfologĂa geogrĂĄfica y ecolĂłgica, diferente al de Yungas.Fil: Tedesco, Maria Esther. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de BiologĂa. Laboratorio de HerpetologĂa; ArgentinaFil: Zaracho, Victor Hugo. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas; Argentina. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de BiologĂa. Laboratorio de HerpetologĂa; ArgentinaFil: Regnet, Miguel Antonio. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de BiologĂa. Laboratorio de HerpetologĂa; ArgentinaFil: Acosta, JosĂ© Luis. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas; Argentina. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de BiologĂa. Laboratorio de HerpetologĂa; ArgentinaFil: Aguiar, Leonardo Dionel. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - Nordeste. Instituto de BotĂĄnica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de BotĂĄnica del Nordeste; ArgentinaFil: Etchepare, Eduardo Gabriel. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas; Argentina. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de BiologĂa. Laboratorio de HerpetologĂa; Argentina. Universidad TecnolĂłgica Nacional. Facultad Regional de Concordia; ArgentinaFil: Ruiz Garcia, JosĂ© Augusto. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de BiologĂa. Laboratorio de HerpetologĂa; ArgentinaFil: Aguirre, Roberto Hugo. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de BiologĂa. Laboratorio de HerpetologĂa; ArgentinaFil: Lencina, Franco Daniel Alberto. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de BiologĂa. Laboratorio de HerpetologĂa; ArgentinaFil: EspĂnola Ocampo, Daniel. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de BiologĂa. Laboratorio de HerpetologĂa; Argentin
Primeros registros de Cercosaura parkeri (Ruibal, 1952) (Sauria, Gymnophthalmidae) en la ecorregiĂłn Chaco Seco de Argentina
Cercosaura parkeri se distribuye en Argentina, Bolivia (que incluye su localidad tipo: Buena Vista, departamento de Santa Cruz), Brasil y PerĂș (Ruibal, 1952; Viñas y Daneri, 1991). El estado taxonĂłmico de algunas poblaciones se encuentra en revisiĂłn y probablemente represente un complejo de varias especies (Ribeiro-JĂșnior y Amaral, 2017). En Argentina, ha sido citada para las provincias de Catamarca, Jujuy, Salta y TucumĂĄn (Viñas y Daneri, 1991; Abdala et al., 2012), particularmente en la ecorregiĂłn de selvas de Yungas (Morello et al., 2012). Para Santiago del Estero su presencia fue incierta y no se conocĂan ejemplares de referencia. Sin embargo, fue incluida en un mapa de distribuciĂłn por Cei (1993) y en una lista de especies de Argentina por Ăvila et al. (2013), pero no fue considerada por otros autores tales como Abdala et al. (2012) y Cabrera et al. (2019). En este trabajo se da a conocer la presencia de C. parkeri para las provincias de Chaco, Formosa y Santa Fe, y confirmamos su presencia para Santiago del Estero con material de referencia (Fig. 1). Las nuevas localidades amplĂan el rango de distribuciĂłn de la especie hacia el Este, en un radio aproximado de 450 km. AdemĂĄs, se destaca la presencia de la especie en ambientes de Argentina con otra morfologĂa geogrĂĄfica y ecolĂłgica, diferente al de Yungas.Fil: Tedesco, Maria Esther. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de BiologĂa. Laboratorio de HerpetologĂa; ArgentinaFil: Zaracho, Victor Hugo. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas; Argentina. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de BiologĂa. Laboratorio de HerpetologĂa; ArgentinaFil: Regnet, Miguel Antonio. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de BiologĂa. Laboratorio de HerpetologĂa; ArgentinaFil: Acosta, JosĂ© Luis. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas; Argentina. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de BiologĂa. Laboratorio de HerpetologĂa; ArgentinaFil: Aguiar, Leonardo Dionel. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - Nordeste. Instituto de BotĂĄnica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de BotĂĄnica del Nordeste; ArgentinaFil: Etchepare, Eduardo Gabriel. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas; Argentina. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de BiologĂa. Laboratorio de HerpetologĂa; Argentina. Universidad TecnolĂłgica Nacional. Facultad Regional de Concordia; ArgentinaFil: Ruiz Garcia, JosĂ© Augusto. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de BiologĂa. Laboratorio de HerpetologĂa; ArgentinaFil: Aguirre, Roberto Hugo. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de BiologĂa. Laboratorio de HerpetologĂa; ArgentinaFil: Lencina, Franco Daniel Alberto. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de BiologĂa. Laboratorio de HerpetologĂa; ArgentinaFil: EspĂnola Ocampo, Daniel. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de BiologĂa. Laboratorio de HerpetologĂa; Argentin
Pervasive gaps in Amazonian ecological research
Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4
While the increasing availability of global databases on ecological communities has advanced our knowledge
of biodiversity sensitivity to environmental changes,5â7 vast areas of the tropics remain understudied.8â11 In
the American tropics, Amazonia stands out as the worldâs most diverse rainforest and the primary source of
Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13â15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazonâs biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus
crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced
environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian
Amazonia, while identifying the regionâs vulnerability to environmental change. 15%â18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by
2050. This means that unless we take immediate action, we will not be able to establish their current status,
much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio
Photography-based taxonomy is inadequate, unnecessary, and potentially harmful for biological sciences
The question whether taxonomic descriptions naming new animal species without type specimen(s) deposited in collections should be accepted for publication by scientific journals and allowed by the Code has already been discussed in Zootaxa (Dubois & NemĂ©sio 2007; Donegan 2008, 2009; NemĂ©sio 2009aâb; Dubois 2009; Gentile & Snell 2009; Minelli 2009; Cianferoni & Bartolozzi 2016; Amorim et al. 2016). This question was again raised in a letter supported
by 35 signatories published in the journal Nature (Pape et al. 2016) on 15 September 2016. On 25 September 2016, the following rebuttal (strictly limited to 300 words as per the editorial rules of Nature) was submitted to Nature, which on
18 October 2016 refused to publish it. As we think this problem is a very important one for zoological taxonomy, this text is published here exactly as submitted to Nature, followed by the list of the 493 taxonomists and collection-based
researchers who signed it in the short time span from 20 September to 6 October 2016
- âŠ