Absence of the Parasite Escovopsis in Fungus Garden Pellets Carried by Gynes of Atta sexdens

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

A low-power silicon-on-insulator PWM discriminator for biomedical applications

A CMOS/SOI circuit to decode PWM signals is presented as part of a body-implanted neurostimulator for visual prosthesis. Since encoded data is the sole input to the circuit, the decoding technique is based on a double-integration concept and does not require dc filtering. Nonoverlapping control phases are internally derived from the incoming pulses and a fast-settling comparator ensures good discrimination accuracy in the megahertz range. The circuit was integrated on a 2 mu m single-metal SOI fabrication process and has an effective area of 2mm(2) Typically, the measured resolution of encoding parameter a was better than 10% at 6MHz and V-DD=3.3V. Stand-by consumption is around 340 mu W. Pulses with frequencies up to 15MHz and alpha = 10% can be discriminated for V-DD spanning from 2.3V to 3.3V. Such an excellent immunity to V-DD deviations meets a design specification with respect to inherent coupling losses on transmitting data and power by means of a transcutaneous link.

Construção de instrumentos técnicos de astronomia para a divulgação científica: telescópio fotométrico de grande abertura e baixo custo

Although the popularization of astronomy in the last decade and the International Year of Astronomy, celebrated in 2009, there's a great lack in respect of quality instruments for astronomical disclosure. Thinking in this research about it, we intend to recuperate and elucidate a technique long forgotten: the metal mirror amateur telescope, once was done in the first reflecting telescopes. However, with the resources available today and given the high purity of the materials, our results were better than that obtained by the pioneers. We developed and built a large aperture telescope (250 mm diameter) and very bright (focal ratio = 4.0), versatile and portable. In our study was described step by step the process to fabricate the telescope. Through its first images captured of the Moon, we can illustrate its versatility both for use in outreach events and for use in amateur astronomy, because it is a primary focus capture system and can run registration of various astronomical events

Construção de telescópio didático para divulgação científica

This research is dedicated at those who think about the importance of science teatching as a way to contribute to the transformation and innovation of science, attracting people and demystifying concepts, the main objective of this research is the demonstratation step by step the complete process to manufacture of didactic Newtonian telescope, discussing in detail all the processes involved .Adittionally, it has been shown that the proposed instrument it can be aplied in and promote the popular access to scientific knowledge

Cinquenta anos do Mini Cooper: uma viagem pelo tempo por meio da Ilustração

The use of images as a mean of human knowledge transmission dates from the earliest records of visual communication with the cave paintings. Throughout history, the communicating function remained and was extended for a variety of approaches, including illustration, which plays an important role by transmitting a content to be communicated on a creative and unique way. The advertising area relies largely on the communicative power of illustration, using it as a visual aid on different ways and medias. The advertising pieces aimed at the automotive sector – especially those developed by BMW for the Mini Cooper model – broadly employs illustrations to spread the word about the product and its attributes, seeking to communicate it using an original way. With a qualitative approach to the case study, this article analyzes the illustrations produced by the South African design studio Am I Collective as part of a video prepared by South African advertising agency Blackriver FC as a celebration campaign for the fifty years of vehicle Mini Cooper, celebrated on 2009, and it aims to identify the illustrations visuals and compositions used in the construction of the covered temporal panorama.

Caixa experimentoteca: uma proposta para o ensino de astronomia

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

As interfaces da convivência da família em uma unidade de pronto socorro

The aim was to describe the positive and negative aspects in a family communication at an emergency care unit. This is a descriptive research with a qualitative approach. The sample consisted of 20 family members / caregivers of patients admitted to the emergency room of a university hospital. Data collection was carried out through semi-structured interviews applied during the period of May-June 2011. Data analysis was performed using the methodological framework of the Collective Subject Discourse which resulted in four themes: Lack of information compromising the family/health professional ties; The ideal model of information provided by the professional regarding the condition of the hospitalized relative; Assessment of information provided about hospital routines; and The role of the relative/companion. Therefore, for the patient and his family, communication is presented as a tool on the care given with the function of transmitting safety, respect and guidance. However when it is incomplete, it becomes a potential form of stress and dissatisfaction.

Prospecção de assinaturas de seleção em regiões de QTL associadas com características reprodutivas em novilhas Nelore

Pós-graduação em Genética e Melhoramento Animal - FCAV