Increased Levels of NOTCH1, NF-kappa B, and Other Interconnected Transcription Factors Characterize Primitive Sets of Hematopoietic Stem Cells

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Lazer, aventura e risco: reflexões sobre atividades realizadas na natureza

This paper reflects on the conceptions of adventure and risk, revealed in activities in nature. The presented speeches are contained in a research, whose boarding works with a universe of reasons, aspirations, values, beliefs and attitudes, corresponding to a deeper space of the processes, relations and phenomena. It was possible to perceive that the adventure activities in nature are carrying of innumerable meanings, related with new discoveries, new challenges, search for the stranger, uncertainty, cooperation, friendship, among others. Such activities understand diverse forms of experimentation, pointing besides to physical risk, the symbolic and imaginary risk.

Reproductive biology in the primitive relic Angiosperm Drimys brasiliensis (Winteraceae)

From field observations on Drimys brasiliensis, principally in the Botucatu region of São Paulo State, Brazil, new data on the reproductive biology, the rhythm of growth, and the development of lateral cymose inflorescences, flowers and fruits are presented. Pollination accelerates the rate of flower-development for about 4-6 days. Pollination experiments show that D. brasiliensis is not self-sterile; because of mechanical devices the sticky pollen grains do not normally come into contact with the stigmata unless an animal pollen vector is involved. The pollinators are diurnal Coleoptera, Diptera and Thysanoptera which eat from the pollen, lick from the stigmatic exudates and (in case of the flies) probably also from the staminal glands. Fruit- and seedeaters are birds which seem to be the main dispersal agents. Establishment of new individuals normally is through seedlings, but also by vegetative propagation through plagiotropous branches which may root and separate from the mother plant. The morphological, developmental and reproductive aspects in D. brasiliensis are discussed in a wider context, compared with data from other Magnoliidae, and related to aspects of early Angiosperm evolution. © 1980 Springer-Verlag.

Histochemical characterization and secretory activity of the hypopharyngeal glands in the primitive social wasp Polistes versicolor (Hymenoptera: Vespidae)

Using histochemical techniques, the present work describes the basic histochemical characteristics of the secretion in hypopharyngeal glands of Polistes versicolor (Olivier) and estimates the secretory activity in specimens of different ages. The secretory activity was determined by glandular cell diameter and by the amount of secretion present in the glands. The results did not reveal a relationship between these parameters and the age of the wasps, not allowing us to determine the development cycle of these glands throughout the wasps' life. Also, a relationship between glandular cell diameter and amount of secretion present in the glands was not observed.

Políticas para a retomada do crescimento: reflexões de economistas brasileiros

Prefacio de Renato Baumann

Commodities, choques externos e crescimento: reflexões sobre a América Latina

Incluye bibliografia

A competência em informação na televisão universitária: Reflexões e contribuições iniciais ao contexto brasileiro

The university television station is a communication vehicle that incorporates principles of social structure from the diffusion of culture, knowledge and education dissemination which may lead to the formation of behaviors and opinions instilling critical thought in individuals and promoting the dialogue between society and university by disseminating the knowledge produced in the academic environment. In this way it is pertinent to know and understand the information literacy of professionals working in this context when it comes to content production for university television station. For this initial discussion are addressed the concepts of university television station as well information literacy in order to establish relations between the two thematic mentioned, the relevance of studies in this scenario in relation to the Information Science context.

Reformas das instituições fiscais: reflexões sobre o caso do Brasil

Incluye Bibliografía

Reflexões sobre a natureza do bem-estar

Incluye Bibliografía

Reestruturação industrial: reflexões sobre autonomia tecnológica e relações econômicas internacionais

Incluye Bibliografía

Música e discurso: das reflexões do círculo de Bakhtin aos contos de Machado de Assis

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Dicionários bilíngues pedagógicos: análise, reflexões e propostas

Pós-graduação em Estudos Linguísticos - IBILCE

Vocabulário erótico-obsceno dos orgãos sexuais masculino e feminino em português e italiano

Pós-graduação em Estudos Linguísticos - IBILCE