Bringing Innovations to Set Up a Better Scientific Journal for Publication of Your Research

The journal Sociobiology announces the adoption of a series of editorial innovations that aim to speed up review and publication time, to select high quality articles for publication, to adopt transparent and ethical editorial standards and to reinforce the culture of open acess scientific publishing

Effect Of A Simulated Heat Wave In Thermal And Aerial Environment Broiler-rearing Environment

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Global warming increases the occurrence of events such as extreme heat waves. Research on thermal and air conditions affecting broiler-rearing environment are important to evaluate the animal welfare under extreme heat aiming mitigation measures. This study aimed at evaluating the effect of a simulated heat wave, in a climatic chamber, on the thermal and air environment of 42-day-old broilers. One hundred and sixty broilers were housed and reared for 42 days in a climatic chamber; the animals were divided into eight pens. Heat wave simulation was performed on the 42nd day, the period of great impact and data sampling. The analyzed variables were room and litter temperatures, relative humidity, concentrations of oxygen, carbon monoxide and ammonia at each pen. These variables were assessed each two hours, starting at 8 am, simulating a day heating up to 4 pm, when it is reached the maximum temperature. By the results, we concluded that increasing room temperatures promoted a proportional raise in litter temperatures, contributing to ammonia volatilization. In addition, oxygen concentrations decreased with increasing temperatures; and the carbon monoxide was only observed at temperatures above 27.0 degrees C, relative humidity higher than 88.4% and litter temperatures superior to 30.3 degrees C.362271280Fundacao de Amparo a Pesquisa do estado de Sao Paulo - FAPESP (Foundation for Research Support of the state of Sao Paulo)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP

Onda de calor simulada e seu impacto no ambiente térmico e aéreo de frangos de corte

Global warming increases the occurrence of events such as extreme heat waves. Research on thermal and air conditions affecting broiler-rearing environment are important to evaluate the animal welfare under extreme heat aiming mitigation measures. This study aimed at evaluating the effect of a simulated heat wave, in a climatic chamber, on the thermal and air environment of 42-day-old broilers. One hundred and sixty broilers were housed and reared for 42 days in a climatic chamber; the animals were divided into eight pens. Heat wave simulation was performed on the 42nd day, the period of great impact and data sampling. The analyzed variables were room and litter temperatures, relative humidity, concentrations of oxygen, carbon monoxide and ammonia at each pen. These variables were assessed each two hours, starting at 8 am, simulating a day heating up to 4 pm, when it is reached the maximum temperature. By the results, we concluded that increasing room temperatures promoted a proportional raise in litter temperatures, contributing to ammonia volatilization. In addition, oxygen concentrations decreased with increasing temperatures; and the carbon monoxide was only observed at temperatures above 27.0 °C, relative humidity higher than 88.4% and litter temperatures superior to 30.3 °C.O aquecimento global aumenta a ocorrência de eventos extremos como as ondas de calor. Pesquisas sobre como as condições térmicas e aéreas afetam o ambiente de produção de frangos de corte são importantes para se avaliar o bem-estar animal sob condições extremas de calor, objetivando medidas mitigadoras. Este estudo pretende avaliar o efeito da simulação de ondas de calor em câmara climática, sobre o ambiente térmico e aéreo de frangos de corte com 42 dias de idade. 160 frangos foram alojados e criados, de 1 a 42 dias de idade, em câmara climática que foi dividida em oito baias. A simulação de onda de calor foi realizada no 42º dia de criação das aves, memento de maior impacto e da coleta dos dados. As variáveis foram coletadas em intervalos de duas horas a partir das 8 horas da manhã, simulando o aquecimento do dia até às 16 horas, horário de máxima, sendo coletados temperatura ambiente, temperatura da cama, umidade relativa do ar, concentrações de oxigênio, monóxido de carbono e amônia em cada baia, nos intervalos de duas em duas horas. Com os resultados obtidos na câmara climática, foi possível concluir que o aumento da temperatura ambiente ocasionou aumento na temperatura da cama, o que, consequentemente, contribuiu para o aumento da volatilização da amônia. A concentração de oxigênio foi reduzida enquanto a temperatura foi aumentada. A presença de monóxido de carbono foi observada quando a temperatura ambiente estava acima de 27,0 ºC, a umidade relativa superior a 88,4% e a temperatura da cama estava superior a 30,3 ºC.36227128

Electrochemical degradation of the chloramphenicol at flow reactor

This paper reports a study of electrochemical degradation of the chloramphenicol antibiotic in aqueous medium using a flow-by reactor with DSA® anode. The process efficiency was monitored by chloramphenicol concentration analysis with liquid chromatography (HPLC) during the experiments. Analysis of Total Organic Carbon (TOC) was performed to estimate the degradation degree and Ion Chromatography (IC) was performed to determinate inorganic ions formed during the eletrochemical degradation process. In electrochemical flow-by reactor, 52% of chloramphenicol was degraded, with 12% TOC reduction. IC analysis showed the production of chloride ions (25 mg L-1), nitrate ions (6 mg L-1) and nitrite ions (4.5 mg L-1).Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP

Criteria used by a teacher to justify his didactic proposal: A study of Master thesis

II Congreso Internacional Virtual sobre el Enfoque Ontosemiótico del Conocimiento y la Instrucción Matemáticos (CIVEOS-2), 23-26 de marzo de 2017. [http://enfoqueontosemiotico.ugr.es/]El objetivo de este trabajo es presentar cuáles son los criterios utilizados por un profesor cuando realiza el análisis didáctico en su trabajo final de máster. Se trata de un estudio de caso que toma como objeto de estudio un trabajo de fin de máster realizado por un profesor de matemáticas en servicio. El análisis se basó en los criterios de idoneidad didáctica propuestos por el Enfoque Ontosemiótico (EOS) del conocimiento y la instrucción matemáticos (Godino, Batanero y Font, 2007). Como resultado del análisis fue posible notar que el profesor, de forma implícita, presenta una reflexión más elaborada en relación con los criterios epistémico, mediacional, y sobre todo ecológico, y una baja reflexión en cuanto a los componentes que conforman los criterios, cognitivo, emocional e interaccional.The objective of this work is to present the criteria used by a teacher when performing the didactical analysis in his master thesis. To achieve this goal, a case study was carried out that takes the master thesis carried out by an in service mathematics teacher as an object of study. The analysis was based on the didactical suitability criteria proposed in the Ontosemiotic Approach of mathematical knowledge and instruction (OSA) (Godino, Batanero y Font, 2007). As a result of the analysis it was possible to note that the teacher, implicitly, presents a more elaborate reflection in relation to the epistemic, mediational and ecological criteria and a low reflection on the components that conform the cognitive, emotional and interaction facets

HIP 10725: The first solar twin/analogue field blue straggler

Context. Blue stragglers are easy to identify in globular clusters, but are much harder to identify in the field. Here we present the serendipitous discovery of one field blue straggler, HIP 10725, that closely matches the Sun in mass and age, but with a metallicity slightly lower than solar. Aims. We characterise the solar twin/analogue HIP 10725 to assess whether this star is a blue straggler. Methods. We employed spectra with high resolution (R ~ 105) and high signal-to-noise ratio (330) obtained with UVES at the VLT to perform a differential abundance analysis of the solar analogue HIP 10725. Radial velocities obtained by other instruments were also used to check for binarity. We also studied its chromospheric activity, age, and rotational velocity. Results. HIP 10725 is severely depleted in beryllium ([ Be/H ] ≤ −1.2 dex) for its stellar parameters and age. The abundances relative to solar of the elements with Z ≤ 30 show a correlation with condensation temperature, and the neutron capture elements produced by the s-process are greatly enhanced, while the r-process elements seem normal. We found its projected rotational velocity (vsini = 3.3 ± 0.1 km s-1) to be significantly higher than solar and incompatible with its isochrone-derived age. Radial velocity monitoring shows that the star has a binary companion. Conclusions. Based on the high s-process element enhancements and low beryllium abundance, we suggest that HIP 10725 has been polluted by mass transfer from an AGB star that probably had an initial mass of about 2 M⊙. The radial velocity variations suggest the presence of an unseen binary companion, probably the remnant of a former AGB star. Isochrones predict a solar-age star, but this disagrees with the high projected rotational velocity and high chromospheric activity. We conclude that HIP 10725 is a field blue straggler, rejuvenated by the mass-transfer process of its former AGB companion

Enhancing the effective critical current density in a Nb superconducting thin film by cooling in an inhomogeneous magnetic field

Quantitative magneto-optical imaging of a type-II superconductor thin film cooled under zero, homogeneous, and inhomogeneous applied magnetic fields indicates that the latter procedure leads to an enhancement of the screening capacity. Such an observation is corroborated by both B-independent and B-dependent critical state model analyses. Furthermore, repulsive (attractive) vortex–(anti)vortex interactions were found to have a decisive role in the shielding ability, with initial states prepared with vortices resulting in a shorter magnetic flux front penetration depth than those prepared with antivortices. The proposed strategy could be implemented to boost the performance of thin superconducting devices