Sao Paulo State University

About: Sao Paulo State University is a education organization based out in São Paulo, Brazil. It is known for research contribution in the topics: Population & Large Hadron Collider. The organization has 55715 authors who have published 100436 publications receiving 1375332 citations.

Produtos naturais: atualidade, desafios e perspectivas

Abstract: This article offers an overview on the historical facts and the recent state of art of Chemistry of Natural Products which, in the course of 25 years of SBQ, have led to the present development of this area in Brazil. In addition, this article deals with the last trends on Natural Products in Brazil and also in developed countries.

Emergência de plantas daninhas em solo coberto com palha de cana-de-açúcar

Abstract: Com o objetivo de avaliar os efeitos da cobertura do solo, com 0, 5, 10 e 15 t ha-1 de palha de cana-de-acucar da variedade SP 79 2233, sobre a emergencia de seis especies de plantas daninhas (Brachiaria decumbens, Digitaria horizontalis, Sida spinosa, Ipomoea grandifolia, Ipomoea hederifolia e Ipomoea quamoclit), foi conduzido um experimento em casa de vegetacao do Departamento de Fitossanidade da Universidade Estadual Paulista, campus de Jaboticabal, SP. Cada unidade experimental foi constituida por um vaso plastico com 21,50 cm de diâmetro e capacidade para quatro litros de solo. Foram semeados 0,112 g de sementes de D. horizontalis, 2,12 g sementes de I. quamoclit e 50 sementes das demais especies, por vaso. Foram contabilizadas as plântulas emersas aos 6 e 32 dias apos a semeadura (DAS) sob a palha e aos 30, 60 e 90 dias apos a remocao da palha (DARP). Constatou-se que a cobertura do solo com 5, 10 e 15 t ha-1 de palha de cana inibiu a emergencia de plântulas das especies B. decumbens e S. spinosa, sendo o mesmo observado para D. horizontalis submetida a 10 e 15 t ha-1 de palha. No entanto, para I. grandifolia e I. hederifolia o numero de plantas emersas nao diferiu entre as quantidades de palha. Por outro lado, a presenca da cobertura morta com palha de cana incrementou a emergencia de plântulas de I. quamoclit. Nao foram verificados, apos a remocao da palha, fluxos expressivos na emergencia de plântulas das especies estudadas.

Temporomandibular disorders are differentially associated with headache diagnoses: a controlled study.

Abstract: ObjectivesTemporomandibular disorders (TMDs) are considered to be comorbid with headaches. Earlier population studies have suggested that TMD may also be a risk factor for migraine progression. If that is true, TMD should be associated with specific headache syndromes (eg, migraine and chronic migra

Non-destructive genetic sampling in fish. An improved method for DNA extraction from fish fins and scales.

Abstract: DNA-based studies have been one of the major interests in conservation biology of endangered species and in population genetics. As species and population genetic assessment requires a source of biological material, the sampling strategy can be overcome by non-destructive procedures for DNA isolation. An improved method for obtaining DNA from fish fins and scales with the use of an extraction buffer containing urea and further DNA purification with phenol-chloroform is described. The methodology combines the benefits of a non-destructive DNA sampling and its high efficiency. In addition, comparisons with other methodologies for isolating DNA from fish demonstrated that the present procedure also becomes a very attractive alternative to obtain large amounts of high-quality DNA for use in different molecular analyses. The DNA samples, isolated from different fish species, have been successfully used on random amplified polymorphic DNA (RAPD) experiments, as well as on amplification of specific ribosomal and mitochondrial DNA sequences. The present DNA extraction procedure represents an alternative for population approaches and genetic studies on rare or endangered taxa.