Comportamento reprodutivo e longevidade de casais isolados e agrupados de Lucilia cuprina, sob condições controladas.

O objetivo deste trabalho é a otimização de métodos e técnicas para a criação de Lucilia cuprina, em laboratório, depende, fundamentalmente, de informações relativas a seu comportamento reprodutivo e longividade; No presente estudo, verificou-se que, em decorrência do isolamento dos espécimes, houve um aumento acentuado do número de ovos/fêmea (1344,18), quando 732,78), sendo a viabilidade dos ovos reduzida em consequência do isolamento das fêmeas

Event Stream Processing with Multiple Threads

Current runtime verification tools seldom make use of multi-threading to speed up the evaluation of a property on a large event trace. In this paper, we present an extension to the BeepBeep 3 event stream engine that allows the use of multiple threads during the evaluation of a query. Various parallelization strategies are presented and described on simple examples. The implementation of these strategies is then evaluated empirically on a sample of problems. Compared to the previous, single-threaded version of the BeepBeep engine, the allocation of just a few threads to specific portions of a query provides dramatic improvement in terms of running time

Desenvolvimentos recentes no domínio da conexão aço concreto no contexto das estruturas mistas

Este trabalho apresenta desenvolvimentos recentes sobre conexão aço-concreto para estruturas mistas. Os estudos realizados envolvem campanhas experimentais com diversos tipos de conectores de cisalhamento, utilizando-se concreto normal e concretos leves de alta resistência. A caracterização do comportamento das conexões tem sido realizada através de ensaios tipo push-out. Os resultados experimentais recentemente obtidos são comparados com resultados de outros autores. Os resultados das pesquisas que vêm sendo realizadas indicam uma boa perspectiva de utilização de novos conectores de cisalhamento no contexto das estruturas mistas de aço e concreto.This work presents recent developments on steel-concrete connection in composite structures. The accomplished studies involve experimental programs with various types of shear connectors, using normal weight, as well as lightweight concrete. The behaviour of shear connectors has been assessed through push-out tests. The experimental results recently obtained are compared with results from other authors. The results of the research programme that has been carried out in the last few years show good perspective for the use of new types of shear connectors in steel-concrete composite structures

Design and experimental analysis of a new shear connector for steel and concrete composite structures

This work presents the design of a new shear connector and the corresponding results obtained on push-out tests. This new shear connector consists on a steel rib with indented cut shape that provides resistance to longitudinal shear and prevents transversal separation between the concrete slab and the steel profile (uplift). Adding to this, the connector openings cut makes easier the arrangement of transversal reinforcement bars. The installation of the connectors is simple and requires only common welding procedure. Due to its load capacity, the indented connector is able to replace a group of stud bolts. Its structural behaviour is analyzed and compared with other existing connectors, like the stud bolt and the Perfobond. The influence of different geometrical and mechanical aspects on the ultimate load capacity and ductility is assessed. The performed studies indicate that the proposed indented connector presents a good mechanical performance, associated with constructive and economical advantages.(undefined

Análise experimental de um conector de cisalhamento em chapa de aço endentada para estruturas mistas de aço e concreto

Este trabalho apresenta o projeto e os resultados de ensaios tipo push-out de um novo conector de cisalhamento constituído por uma chapa de aço endentada. O conector proposto possui saliências e reentrâncias trapezoidais que proporcionam resistência ao cisalhamento longitudinal e previnem a separação transversal entre o perfil metálico e a laje de concreto (uplift). Além disso, as aberturas no conector facilitam a disposição das barras de armadura. A capacidade da conexão pode ser variada em função tanto da armadura transversal ao conector como da resistência do concreto. A instalação dos conectores é simples, podendo ser feita com solda comum, sem a necessidade de equipamentos especiais no canteiro de obras. Devido à sua resistência última, um conector em chapa endentada pode substituir um número significativo de conectores tipo pino com cabeça (stud). O comportamento do novo conector foi analisado e comparado com o de conectores existentes, no caso o Perfobond e o stud, no que se refere à capacidade última e à ductilidade da conexão, avaliando a influência de diversas características geométricas e mecânicas. Os estudos realizados indicam que o conector em chapa endentada proposto apresenta um comportamento adequado associado a diversas vantagens construtivas e econômicas

STUDY OF THE O-18+Ni-64 TWO-NEUTRON TRANSFER REACTION AT 84 MeV BY MAGNEX

A study of the two-neutron transfer reaction of the O-18 + Ni-64 system at 84 MeV incident energy to the ground and first 2(+) excited state of the residual Ni-66 nucleus is presented. The experiment was performed at the INFN-LNS (Italy) by using the large acceptance MAGNEX spectrometer. Theoretical models are used in order to disentangle the competition between long-range and short-range correlations

Biogas production from dairy cattle manure, under organic and conventional production systems.

The purpose of this study was to evaluate the production of biogas, as well as the biogas production potential resulting from the anaerobic biodigestion of dairy cattle manure under organic (CMOS) and conventional (CMCS) production system. Also, the concentration of thermotolerant coliforms was evaluated after the biodigestion process. Therefore, bench biodigesters prototypes were supplied with CMOS and CMCS for 30 weeks. The experimental design was completely randomized with four repetitions for each treatment. Analysis of total solids (TS), volatile solids (VS), biogas production potential, most probable number (MPN) of thermotolerant coliforms were made. The cumulative biogas production was 6.18 L and 11.15 L, when using the CMOS and CMCS, respectively. Average biogas production potential of CMCS were 0.2; 2.6 and 2.9 L kg-1 substrate, ST and SV added, respectively and for CMOS 0.1; 1.4 and 1.9 L kg-1substrate, ST and SV added, respectively. After the anaerobic biodigestion process of CMOS and CMCS, it was observed that the concentrations of thermotolerant coliforms were well below than the limit established by law

Long-range versus short-range correlations in the two-neutron transfer reaction Ni 64 (O 18, O 16) Ni 66

Recently, various two-neutron transfer studies using the (18O,16O) reaction were performed with a large success. This was achieved because of a combined use of the microscopic quantum description of the reaction mechanism and of the nuclear structure. In the present work we use this methodology to study the two-neutron transfer reaction of the 18O+64Ni system at 84 MeV incident energy, to the ground and first 2+ excited state of the residual 66Ni nucleus. All the experimental data were measured by the large acceptance MAGNEX spectrometer at the Instituto Nazionale di Fisica Nucleare \u2013Laboratori Nazionali del Sud (Italy). We have performed exact finite range cross section calculations using the coupled channel Born approximation (CCBA) and coupled reaction channel (CRC) method for the sequential and direct two-neutron transfers, respectively. Moreover, this is the first time that the formalism of the microscopic interaction boson model (IBM-2) was applied to a two-neutron transfer reaction. From our results we conclude that for two-neutron transfer to the ground state of 66Ni, the direct transfer is the dominant reaction mechanism, whereas for the transfer to the first excited state of 66Ni, the sequential process dominates. A competition between long-range and short-range correlations is discussed, in particular, how the use of two different models (Shell model and IBM's) help to disentangle long- and short-range correlations