Características agronômicas de 13 cultivares de arroz em Sistema Irrigado.

Com o proposito de dar informacoes de pesquisas aos agricultores e tecnicos que lidam com a orizicultura, procurou-se estudar o rendimento de graos e outras caracteristicas agronomicas de 13 cultivares de arroz sob condicoes de irrigacao por inundacao. O conhecimento destes fatores, aliados as boas qualidades de engenho e culinaria, conduzem ao sucesso de uma lavoura comercial. Desse modo, ao se escolher cultivar(es) deve-se verificar, antecipadamente, todas as suas caracteristicas agronomicas e comerciais a fim de evitar frustracoes de safra.bitstream/item/95656/1/CT040001.pd

Rubella in Sub-Saharan Africa and sensorineural hearing loss: a case control study

Rubella infection can affect several organs and cause birth defects that are responsible for congenital rubella syndrome (CRS). Congenital hearing loss is the most common symptom of this syndrome, occurring in approximately 60% of CRS cases. Worldwide, over 100 000 babies are born with CRS every year. There is no specific treatment for rubella, but the disease is preventable by vaccination. Since 1969, the rubella vaccine has been implemented in many countries, but in Africa, only a few countries routinely immunize against rubella. The aim of this study was to estimate the rate of infection from the wild-type rubella virus in São Tomé and Príncipe by determining rubella seroprevalence with a DBS method. The goal of this study was to reinforce the need for implementation of the rubella vaccine in this country. As secondary objectives, the validation of a DBS method was first attempted and an association between seroprevalence and hearing loss was assessed.info:eu-repo/semantics/publishedVersio

Genetic Basis of Nonsyndromic Sensorineural Hearing Loss in the Sub-Saharan African Island Population of São Tomé and Príncipe: The Role of the DFNB1 Locus?

Hearing loss (HL) is a common condition with both genetic and environmental causes, and it greatly impacts global health. The prevalence of HL is reportedly higher in developing countries such as the Sub-Saharan African island of São Tomé and Príncipe, where the deaf community is estimated to be less than 1% of the population. We investigated the role of the DFNB1 locus (GJB2 and GJB6 genes) in the etiology of nonsyndromic sensorineural hearing loss (NSSHL) in São Tomé and Príncipe. A sample of 316 individuals, comprising 136 NSSHL patients (92 bilateral, 44 unilateral) and 180 controls, underwent a clinical and audiological examination. Sequencing of the GJB2 coding region and testing for the (GJB6-D13S1830) and del(GJB6-D13S1854) GJB6 deletions were performed. A total of 311 out of 316 individuals were successfully analyzed regarding the GJB2 and GJB6 genetic variations, respectively. The frequency of the GJB2 coding mutations in patients and controls was low. Some of those coding mutations are the most commonly found in Eurasian and Mediterranean populations and have also been identified in Portugal. None of the GJB6 deletions was present. The presence of certain coding variants in São Tomé and Príncipe suggests a non-Sub-Saharan genetic influx and supports the previously reported genetic influx from European (mainly Portuguese) ancestors. In summary, DFNB1 locus does not appear to be a major contributor to NSSHL in São Tomé and Príncipe. However, the presence of both pathogenic and likely pathogenic mutations in GJB2 suggests that GJB2-related NSSHL might still occur in this population, warranting further research on GJB2 testing in NSSHL cases

Microbiological quality of fresh local fish: coagulase-positive Staphylococci analysis.

The aim of this research was to evaluate and quantify the presence of Staphylococci in fresh local fish at a fish processing plant monitored by the Brazilian Federal Inspection Service (Serviço de Inspeção Federal - SIF) located in the North Region of Brazil

Retorno do capital operacional na producao de soja no estado do Piaui - 1984.

As pesquisas com a cultura da soja, no Piaui, comecaram em l972. Desdeentao, o principal problema para a implantacao desta cultura na regiaoNordeste era o de se conseguir uma cultivar adaptavel, que superasse ofator fotoperiodismo. Visando difundir a cultura da soja no Estado, foram instaladas 7 Unidades Demonstrativas a nivel de produtor, utilizando-se a cultivar Tropical. Mantendo-se os pressupostos adotados neste trabalho, todas a Unidades Demonstrativas apresentaram uma taxa de retorno superior ao custo de oportunidade do capital investido na producao de soja. Concluiu-se que com a comercializacao feita a nivel de preco minimo todas as Unidades sao economicamente inviaveis, com execao daUnidade de Capitao de Campos. Ao nivel de preco de mercado todas as as Unidades apresentaram uma taxa media de retorno superior a taxa de juros considerada neste trabalho (3% ao mes) o que demonstra, serem economicamente rentaveis.bitstream/item/95812/1/CT230001.pd

Informações sobre a cultura do arroz no estado do Piauí.

Aspectos econômicos; Aspectos agronômicos; Caracterização dos problemas e prioridades para a pesquisa; Resumos das pesquisas e experimentação realizada com arroz no Estado do Piauí