Geographic Distribution, Key Challenges and Prospects for the Conservation of Threatened Stingless Bee Melipona capixaba Moure e Camargo (Hymenoptera: Apidae)

The stingless bee Melipona capixaba Moure and Camargo, 1994 is endemic to the Brazilian Atlantic Forest. Its occurrence is restricted to highlands in the Espírito Santo State, and it has possibly the smallest known geographic distribution among the cataloged stingless bees. It is therefore considered to be an endangered species. Perhaps because of its small area of occurrence, or because it was only identified two decades ago, little is known about the biology of this species, its current geographic distribution, or its actual preservation status. Here, we present the results from the largest sampling of M. capixaba conducted in its natural habitat. We developed a distribution map by using a geographic information system. Our data indicate that M. capixaba is found in the municipalities of Espírito Santo State at altitudes between 800 m and 1,200 m; with annual average temperatures around 18–23°C; precipitation more than 1,200 mm per year; and vegetation cover-type Mountain Dense Ombrophylous Forest, restricted to an area of approximately 3,450 km2. We observed colonies both in their natural habitat and under conditions of ex situ maintenance, and identified the key challenges and prospects for the conservation of this endangered bee

Characterization of Indoor Small Cells Propagation

The characterization of the wireless medium in indoor small cell networks is essential to obtain appropriate modeling of the propagation environment. Universal Software Radio Peripherals (USRPs) and simple dipole antennas can emulate LTE-Advanced networks. In this work, we verify WINNER II propagation modeling for the indoor femtocell environment by considering different classrooms of 7.32 x 7.32 square meters near a common University Department corridor while measuring the power received in UEs placed in a grid of 49 points (radiated by the small eNodeB in the centre of the classroom of the own cell). These measurements have been carried out either by using the Software Radio Systems LTE that emulates the LTE-Advanced network and its UEs, or by measuring the received power in the UES with a Rohde & Schwarz FSH8 spectrum analyzer. In room 1, by varying the UE position, the highest values of the received power have occurred close to the central BS, and then in the opposite wall, further away from the interferer. Nevertheless, it was verified that the received power does not decrease suddenly because of the effect of the radiation pattern of the BS and UE antennas for large angles of apertures, as well as due to the non-omnidirectional horizontal antenna pattern. In addition, it was demonstrated that there is an effect of “wall loss” proven by the fact that path loss increases between room 2 and room 1 (or between room 3 and 2). If we consider an attenuation for each wall of circa 7-9 dB the behavior of the WINNER II model at 2.625 GHz for the interference coming across different walls is verified.info:eu-repo/semantics/acceptedVersio

Variações diurnas da emissão de CO2, temperatura e umidade do solo sobre diferentes manejos pós-colheita da cana-de-açúcar.

bitstream/item/69062/1/098-moitinho-variacoes.pdfPublicado também no Cadernos de Agroecologia, v. 7, n.2, 2012

Neutrophil apoptosis, phagocytosis and oxidative metabolism in septic patients

Sepse denota a continuidade de um processo de injuria tecidual onde a disfuncao organica multipla representa sua expressao mais grave. Trata-se de uma condicao patologica associada a altas taxas de mortalidade. Diferentes linhagens celulares estao relacionadas a sua fisiopatogenia. Neutrofilos, por exemplo, sao as primeiras celulas da linha de defesa a migrarem para os sitios de inflamacao e/ou infeccao. Suas funcoes primarias incluem fagocitose de bacterias, elaboracao de enzimas oxidativas e nao oxidativas de degradacao, e formacao de fatores quimiotaticos para recrutar outras celulas inflamatorias. O objetivo desse estudo foi avaliar os efeitos da sepse grave e do choque septico na apoptose e na funcao de neutrofilos, sendo esta analisada pela capacidade fagocitica e pelo metabolismo oxidativo. Para tanto, foram incluidos 10 pacientes com quadro clinico e laboratorial de sepse grave ou choque septico com menos de 48 horas de evolucao, classificados de acordo com as definicoes do consenso de 1992 do American College of Chest Physicians / Society of Critical Care Medicine Consensus Conference, internados em Unidade de Terapia Intensiva do Hospital São Paulo, e 10 individuos sadios, maiores de 18 anos, que nao se encontravam em uso de nenhum medicamento, considerados controles. De cada paciente ou voluntario sadio foram coletadas amostras de 10 ml de sangue arterial ou venoso periferico em tubos estereis com 100 U de heparina para realizacao dos ensaios de apoptose, fagocitose e metabolismo oxidativo, utilizando citometria de fluxo...(au)BV UNIFESP: Teses e dissertaçõe

Performance de espécies de adubos verdes num Latossolo Vermelho distroférrico sob manejo ecológico em Dourados, Mato Grosso do Sul.

bitstream/item/69055/1/075-salomao-performance.pdfPublicado também no Cadernos de Agroecologia, v. 7, n.2, 2012