Flutua_̧tiao populacional de formas aladas de Brevicoryne brassicae (L.) (Hemiptera: Aphididae)

Studies related with the flight activity of aphids captured with traps can be useful to predict the appearance of alate forms in the field. It is also useful to understand the population dynamics of those insects. This work was carried out at the Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, Jaboticabal, State of São Paulo, during the period from July 1997 to December 1999, aiming to determine the population curve of alate Brevicoryne brassicae (L.) in the region of Jaboticabal and the influence meteorological factors plays on it. The population survey was carried out in four places, and the alate aphids were sampled by yellow water traps. The influence of air temperature, relative humidity, rainfall and sunshine brightness was verified using stepwise regression. The first captures of alate B. brassicae in the traps began at the end of June. In the region of Jaboticabal, the population curve of alate B. brassicae showed the highest frequency of flights during September. The appearance of alate forms in kale fields at initial stage of development was favored by maximum and minimum temperatures of 26.4°C and 13.5°C, respectively; relative humidity of 75.1%, and reduced rainfall.

Testes de biocompatibilidade in vitro de duas formas comerciais do agregado de trióxido mineral

Recently, regular and white mineral trioxide aggregate (MTA) are being used in Dentistry as retrofilling materials. Genotoxicity and cytotoxicity tests form an important part of cancer research and risk assessment of potential carcinogens. Thus, the goal of this study was to examine the genotoxicity and cytotoxicity of regular and white MTA in vitro by the single cell gel (comet) assay and trypan blue exclusion test, respectively. Mouse lymphoma cells were exposed to two presentation forms of MTA at final concentrations ranging from 1 to 1,000 μg/mL for 3 h at 37°C. The results showed that both compounds tested did not produce genotoxic effects at all concentrations evaluated. Likewise, no statistically significant differences (p > 0.05) were observed in cytotoxicity. Taken together, our results suggest that regular and white MTA are not genotoxins and are not able to interfere in cellular viability as assessed by single cell gel (comet) assay and trypan blue assay, respectively.

Analise da relação entre escorregamento e formas de vertentes no município de cubatão (SP) e seus arredores

The city of Cubatão is a densely populated area with high industrial activity. In the area there are also important linear works as roads, railways, pipelines, aqueducts and lines of transmission of energy. The geological and geomorphological features of the municipality, combined with the human activities, make the site an area heavily prone to the landslides, so a region at high risk. In this work, landslide scars were extracted in aerial photos from 1985 and 1994, years that recorded a high incidence of landslides. Quantitative analysis of the relationship between the occurrence of scars and the forms of tracks were conducted, based on an intensive survey of scars in the region, represented by 2595 extracted scars, with the aim of contributing to a better understanding of the slipping processes in the Serra do Mar paulista and thus to the reduction of risks in the region. Achievements have concluded that the greatest percentage of slides in the region is linked to the strands straitght, followed by convex, which confirms previous studies conducted in the region, in a qualitative way or with a much lower number of scars.

Formas de ureia e doses de nitrogênio em cobertura na qualidade fisiológica de sementes de trigo

Besides increasing productivity, nitrogen fertilization may have positives effects on seed physiological quality. The objective of this study was to evaluate the effect of different forms and levels of urea in top dressing fertilization on the physiological quality of wheat seed genotypes. Seeds of three wheat genotypes (BRS 208, BRS Pardela and IWT 04008) were evaluated for four levels of nitrogen fertilization (0, 40, 80 and 120 kg.ha-1) in three forms of urea (conventional urea, urea with urease inhibitor and protected urea). The nitrogen fertilization was applied during tillering, 20 days after emergence. The seed nitrogen content, 1000 seed mass, germination and vigor (germination first count, cold test, seedling emergence in the field, dry weight of seedlings, accelerated aging and electrical conductivity) were evaluated. The IWT 04008 line and the cultivar BRS Pardela had seeds with a higher physiological quality than those of the cultivar BRS 208. The forms of urea and levels of nitrogen in topdressing did not affect seed physiological quality of the different wheat genotypes.

Formas de fósforo no solo após o cultivo de braquiária e tremoço branco

Phosphorus is one of the major factor that limits agricultural productivity in most tropical soils. The objective of this study was to assess P transformations and availability in a soil cropped to brachiaria (Urochloa ruziziensis) and white lupin (Lupinus albus L.). The study was carried out in a greenhouse at Botucatu, State of São Paulo, Brazil. Brachiaria and white lupin were grown in pots with soil fertilized with 0, 20, 40, 60 and 80mg dm-3 P. The plants were grown for 60 days, when they were harvested and the soil was sampled. Dry matter yields of both species were increased with P rates. Soil bioactive P is increased with P fertilization, but is not affected by the plant species. White lupin is more effective in taking up the organic soil P, but Brachiaria was more effective in reducing the soil maximum P adsorption capacity.

Formas de aplicación de zinc para las plantas de maíz que crecen en Oxisol: Efectos sobre el suelo, la nutrición de las plantas y la productividad

The way of applying zinc can influence the zinc uptake and productivity of crops, especially cereals that have high demand for this nutrient. The aim of this study is to evaluate methods of Zn application on soil, nutritional status and productivity of maize. For this, an experiment was undertaken at FCAV/UNESP, Jaboticabal-SP, in Oxisol clay (DTPA on Zn: 0.5 mg dm-3) with maize (hybrid Simple Impact), from December through May 2009. Nine treatments with three doses of Zn in soil banded application (in furrows) and three doses of Zn by incorporation in soil (0-20 cm depth), foliar application, seed application and control (no Zn). The treatments were arranged in a randomized block design with four replications. Regardless of the method, Zn application promoted higher contents of this micronutrient in soil and higher accumulation in the shoots as well as increasing Zn in the maize grain. However, it did not affect the nutritional status and yield of the maize. The Zn application in the soil resulted in a greater Zn uptake by plants and maize yield, compared to Zn application in the plant by seed or foliar.

Formas de aplicação de zinco e molibdênio no feijoeiro

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

Variabilidade vertical de formas de fósforo em função de fontes e doses de fosfatos em semeadura direta

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

Processos de criação em sala de aula: experiências fenomenológicas como formas de reaprender a ver o mundo

Pós-graduação em Artes - IA

Vozes das formas na poesia concreta do Grupo Noigandres

Pós-graduação em Artes - IA

Novas formas de pensar/dizer, dizer/pensar: a imagem como linguagem mediadora da experiência do formador de professores

Pós-graduação em Artes - IA

Avaliação do tempo de trânsito esofágico de formas farmacêuticas sólidas pela cintilografia e biosusceptometria AC

Pós-graduação em Biologia Geral e Aplicada - IBB

Avaliação de três formas de enriquecimento em área ciliar revegetada junto ao Rio Mogi-Guaçu, SP

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação de caracteristicas físico-químicas e bioquímicas do pequi (Caryocar brasiliense Camb.) em suas diversas formas de armazenamento

Pós-graduação em Biotecnologia - IQ

Comparação da biossorção de metais terras-raras pela biomassa melanizada do fungo Aspergillus nidulans nas formas livre e imobilizada

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)