The heart of the tunicate Ciona intestinalis is a simple tube composed of epithelial muscle cells which—though isolated from any neural connexions—is capable of producing repeated contractions at reasonably constant frequency. It is thus a myogenic pacemaker system in which spontaneous rhythmic activity is derived from some intrinsic source. The simplicity of this system makes it a useful prepa...

In experiments, people do not always appear to think very strategically or to infer the information of others from their choices. We report experimental results in games of private information with three information states, which vary in strategic complexity. “Mousetracking” is used to record which game payoffs subjects look at, for how long, to learn more about the thinking process. Subjects o...

Na perfuração de poços que contém petróleo, são utilizadas brocas ao penetrarem na matriz rochosa geram fragmentos, conhecidos como cascalho. O cascalho é transportado até a superfície pelo fluido possui baixa biodegrabilidade, fazendo com seja necessária uma separação para o possa ser descartado forma adequada meio ambiente. A secagem via micro-ondas está sendo utilizada descontaminação desses...

A apicificação com MTA na rizogênese incompleta permite a formação da barreira apical de forma rápida e segura, contudo, existe dificuldade sua inserção nos condutos radiculares. Neste estudo avaliou-se comparativamente, in vitro, eficácia do selamento em dentes humanos, quando utilizados os dispositivos: porta-MTA, broca Lentulo cone guta percha. Foram 60 anteriores extraídos, comprimentos ent...

in this study which was carried out in 1974 in the province of isphahan a total of 23,273 individuals in the cities, and 18,671 individuals in the villages of the same area were studied. results show that the median age in rural area is 16 and in urban area is 18 years. the birth rate in rural is 27.7 per thousand were as the same rate in urban area is 40.2 per thousand. similarly the general f...

abstract geopedology is a systematic approach of geomorphic analysis for soil mapping which focuses the field operation mainly on sample area. the purpose of this study is to determine the credibility of generalization of the results of geopedological approach for similar landforms in the borujen region, using diversity and similarity indices in a soil taxonomic hierarchical structure. after a ...