Characterization of flavonoids and naphthopyranones in methanol extracts of Paepalanthus chiquitensis herzog by HPLC-ESI-IT-MSn and their mutagenic activity

A HPLC-ESI-IT-MSn method, based on high-performance liquid chromatography coupled to electrospray negative ionization multistage ion trap mass spectrometry, was developed for rapid identification of 24 flavonoid and naphthopyranone compounds. The methanol extracts of the capitulae and scapes of P. chiquitensis exhibited mutagenic activity in the Salmonella/microsome assay, against strain TA97a. �� 2013 by the authors.

Estudo qu��mico e atividade mutag��nica e antiradicalar e Paepalanthus chiquitensis Herzog (ERIOCAULACEAE)

Funda����o de Amparo �� Pesquisa do Estado de S��o Paulo (FAPESP)

A comparison study of periapical repair in dogs' teeth using RoekoSeal and AH plus root canal sealers: A histopathological evaluation

The objective of the study was to evaluate the biocompatibility of RoekoSeal sealer Roeko (Dental Products, Langenau, Germany) with the periapical tissues of dogs and compare it with AH Plus sealer (Dentsply/De Trey, Konstanz, Germany). The pulps of 32 root canals were removed, the apical cementum layer perforated, the biomechanical preparation performed, and the root canals filled by lateral condensation technique. Ninety days after the surgery, the animals were euthanized, the bone with teeth removed, and the samples prepared for histopathological analysis. In group 1 (RoekoSeal Automix), deposition of mineralized tissue was observed, with complete newly mineralized apical formed tissue in 43.8% and partial sealing in 56.2%. In group 2 (AH Plus), in 12.5% there was complete newly mineralized apical formed tissue, in 75% the sealing was partial, and in 12.5% there was no sealing (p < 0.05). There were no differences between the groups in relation to the inflammatory infiltrate; thickness of the periodontal ligament; and the resorption of dentin, cementum or bone (p > 0.05).

Varia����o sazonal de clorofilas em folhas de Tabebuia avellanedae e Anadenanthera colubrina

The experiment had the aim of quantifying seasonal chlorophyll variation on leaves of Anadenanthera colubrina and Tabebuia avellanedae. The experiment used a randomized block design established as a 2 x 3 factorial (two species and three sampling seasons) with 5 replications. The concentrations of chlorophyll in leaves were performed at the end of winter, late spring, and summer. The content of chlorophyll a changed only for A. colubrina, bringing up from spring (117.52 mu g mL(-1)) to summer (151.13 mu g mL(-1)). For the two species, the proportion of chlorophyll b was higher between periods at the end of spring (average of 29.31 mu g mL(-1)) to the end of summer (average of 74.96 mu g mL(-1)) with close relationship with the decrease in global solar irradiance. The chlorophyll a/b relationship increased in late spring due to reduction of chlorophyll b content. A. colubrina showed greater adaptation to the studied environment.

A concord��ncia verbal na l��ngua falada na regi��o noroeste do Estado de S��o Paulo

Coordena����o de Aperfei��oamento de Pessoal de N��vel Superior (CAPES)

Concord��ncia verbal e varia����o: um estudo descritivo-comparativo do portugu��s brasileiro e do portugu��s europeu

Coordena����o de Aperfei��oamento de Pessoal de N��vel Superior (CAPES)

Relembrando a Est��ria de Kaspar Hauser

Com base na teoria piagetiana, enfocando as rela����es pensamento e linguagem, esse artigo tenta tra��ar um paralelo entre Kaspar Hauser ��� personagem do filme ���Jeder f��r sich und Gott gegen alle��� dirigido pelo cineasta alem��o W. Herzog ��� e L. F., garoto cego de nascen��a, com 10 anos, que cresceu ���abandonado���, entregue a seus pr��prios recursos e que s�� come��ou a freq��entar escola aos 8 anos de idade.

Varia����o e gramaticaliza����o no uso de preposi����es em contextos de verbos de movimento no portugu��s brasileiro

Funda����o de Amparo �� Pesquisa do Estado de S��o Paulo (FAPESP)

A realiza����o do objeto direto anaf��rico em l��nguas rom��nicas: um estudo sincr��nico no portugu��s e no espanhol

Conselho Nacional de Desenvolvimento Cient��fico e Tecnol��gico (CNPq)

A varia����o entre ter e haver em constru����es existenciais na fala e na escrita da variedade riopretense

Coordena����o de Aperfei��oamento de Pessoal de N��vel Superior (CAPES)

Dirigiu-se para a sede social da Elite Flor da Liberdade e ofereceu um banquete aos visitantes: sobre a varia����o de proposi����es em complementos verbais

Conselho Nacional de Desenvolvimento Cient��fico e Tecnol��gico (CNPq)

Varia����o em formas verbais: um estudo sociolingu��stico da altern��ncia entre futuro do pret��rito e pret��rito imperfeito do indicativo no portugu��s paulista

Funda����o de Amparo �� Pesquisa do Estado de S��o Paulo (FAPESP)