Normas de produção de mudas.

As presentes normas objetivam estabelecer condicoes que devem ser obedecidas para a producao de mudas com qualidade e tecnologias aplicadas pela Embrapa Agroindustria Tropical.bitstream/CNPAT-2010/5462/1/Dc-041.pd

A região semiárida brasileira.

O Semiárido brasileiro ocupa uma área de 969.589 km2 e inclui os Estados do Ceará, Rio Grande do Norte, a maior parte da Paraíba e Pernambuco, Sudeste do Piauí, Oeste de Alagoas e Sergipe, região central da Bahia e uma faixa que se estende em Minas Gerais, seguindo o Rio São Francisco, juntamente com um enclave no vale seco da região média do rio Jequitinhonha. Clima. Solos e Vegetação e aspectos socieconômicos

Efeito do uso de adjuvantes na tensão superficial e no ângulo de contato de gotas sobre folhas de ipomoea nil e merremia aegyptia.

O uso de adjuvantes pode melhorar a eficiência das aplicações fitossanitárias, modificando características físicas da calda e o espalhamento das gotas pulverizadas sobre os alvos. O objetivo deste trabalho foi verificar o efeito da adição de adjuvantes na tensão superficial de caldas herbicidas, contendo o p.c. Callisto, e o espalhamento de suas gotas sobre folhas de Ipomoea nil e Merremia aegyptia

Is there cardiac autonomic dysfunction in children and adolescents with exercise-induced bronchospasm?

The pulmonary impairment in patients with bronchoconstriction induced by eucapnic voluntary hyperpnea(EVH) goes beyond the respiratory system, also impairing autonomic nervous modulation. This study aimed to evaluate the behavior of cardiac autonomic modulation in young asthmatics with and without EIB after the EVH test. Research design and methods A cross-sectional study design using 54 asthmatics(51.9% female), aged between 10 and 19 years, investigated with the EVH test. Forced expiratory volume in one second(FEV1) was measured at 5, 10, 15, and 30 min after EVH. Heart rate variability(HRV) measures of time were assessed pre and 30 min-post EVH. The diagnosis of Exercise-Induced bronchoconstriction with underlying clinical asthma(EIBA) was confirmed by a fall in FEV1 ≥10% compared to baseline. Results Thirty(55.5%) asthmatics had EIBA. Subjects with EIBA have reduced mean of the R-R intervals in relation to baseline until 15 minutes after EVH. Individuals without EIBA had increased parasympathetic activity compared to baseline(rMSSD) from 5 min after EVH(p < 0.05). This parasympathetic activity increase in relation to baseline was seen in individuals with EIBA after 25 minutes (rMSSD = 49.9 ± 5.3 vs 63.5 ± 7.2, p < 0.05). Conclusion Young asthmatics with EIBA present a delay in the increase of the parasympathetic component after EVH when compared to asthmatics without EIBA

Antimicrobial evaluation of strains of Streptococcus Spp. form tilapia cultivated in Sobradinho Lake, Bahia, Brazil.

Tilapia is the second most cultivated fish in the world, the most cultivated in Brazil and is produced mostly in intensive high density systems, which make them susceptible to infectious diseases

Theory of Functional Connections and Nelder-Mead optimization methods applied in satellite characterization

The growing population of man-made objects with the build up of mega-constellations not only increases the potential danger to all space vehicles and in-space infrastructures (including space observatories), but above all poses a serious threat to astronomy and dark skies. Monitoring of this population requires precise satellite characterization, which is is a challenging task that involves analyzing observational data such as position, velocity, and light curves using optimization methods. In this study, we propose and analyze the application of two optimization procedures to determine the parameters associated with the dynamics of a satellite: one based on the Theory of Functional Connections (TFC) and another one based on the Nelder-Mead heuristic optimization algorithm. The TFC performs linear functional interpolation to embed the constraints of the problem into a functional. In this paper, we propose to use this functional to analytically embed the observational data of a satellite into its equations of dynamics. After that, any solution will always satisfy the observational data. The second procedure proposed in this research takes advantage of the Nealder-Mead algorithm, that does not require the gradient of the objective function, as alternative solution. The accuracy, efficiency, and dependency on the initial guess of each method is investigated, analyzed, and compared for several dynamical models. These methods can be used to obtain the physical parameters of a satellite from available observational data and for space debris characterization contributing to follow-up monitoring activities in space and astronomical observatories.Comment: Submitted to Acta Astronautic

Consórcio de cana-de-açúcar com milho: recomendações de manejo para a região do Cerrado.

Na presente publicação, recomenda-se a integração de cana-de-açúcar com milho visando à otimização da logística de plantio tanto da cana-de-açúcar quanto da cultura do milho. Isso pode aumentar o potencial produtivo da cana- de-açúcar plantada no início do período chuvoso, ao mesmo tempo que intensifica a produção de milho em áreas já ocupadas por cana solteira. Considerando que a cana-de-açúcar ocorre em ciclos que variam em média de cinco a seis cortes, a janela de oportunidade para esta integração ocorre, principalmente, na renovação/plantio, que é escalonado em função dos recursos disponíveis, principalmente parque de máquinas e mão-de-obra. Cabe destacar que esse período coincide com a ociosidade industrial que poderia ser reduzida com o uso de culturas bioenergéticas, como o milho.bitstream/item/218582/1/CT-45-web.pd

Antimicrobial evaluation of strains of Streptococcus Spp. form tilapia cultivated in Sobradinho Lake, Bahia, Brazil.

Tilapia is the second most cultivated fish in the world, the most cultivated in Brazil and is produced mostly in intensive high density systems, which make them susceptible to infectious diseases