Un protocolo es un documento que fragmenta, jerarquiza y secuencia las partes que integran un proceso en el que toman parte muchos actores y distintos dispositivos cuyo ensamblaje no es obvio. Poner de acuerdo a personas expertas de distintas disciplinas no es fácil, pues cada uno tiene su propia visión del objeto sobre el que se quiere intervenir. Más aún, lo justo sería decir que el objeto no existe antes de esas intervenciones sucesivas. Y ese es el motivo por el que necesitamos reunir muchas miradas, porque nos enfrentamos a algo que desborda los límites de lo disciplinar y que no podemos abordar siguiendo un manual.

Настоящата статия е критика на две статии от Тодор Чобанов и Светослав Стамов, 2019 г., в която авторите с генетични и археологични документи доказват, че „Съвременните българи са разпределени по-близо до съвременните кавказци, отколкото повечето европейски популации, което предполага допълнителна степен на кавказки примес, който липсва в останалата част на Европа.”

When monocular images cannot be fused, perception alternates between the two (or more) possible images. This phenomenon, binocular rivalry (BR), is driven by the physical properties of the stimuli (size, contrast, spatial frequency, etc.) but it can also be modulated by attention to features of one of the rival stimuli (Chong et al., 2005; Dieter et al., 2016) and by attentional demands independent of the BR assessment (Paffen et al., 2008). Instead of the perceptually demanding tasks previously used to bias BR, we designed a simple counting task. We monocularly presented a number of trials (around 10 min) with a set of symbols and asked participants to count them. We found that after this task, dominance durations decreased for the unattended channel, and did not change for the attended channel. The results parallel those of Paffen et al. (2008) and square nicely with Levelt's second proposition, suggesting that the counting task effectively increased the sensibility of one channel which led to increased strength of the images presented to that channel. Alternatively, the results could be explained assuming that the non-attended channel was inhibited during the counting task, and the inhibition was carried over to the BR task.

Aim: Euclea divinorum Hern (Ebenaceae) is a treasured East African medicinal plant which has a long use in the management of dental caries. However, there are few reports on the antimicrobial activity of its different parts used in oral care. The aim of this study was to compare the antimicrobial activity of organic extracts of E. divinorum leaves, tender stems and root bark against some oral pathogens and formulate an herbal toothpaste from its most active extract. Place and Duration of the Study: Leaves, tender stems and root bark of E. divinorum were collected from Elgueyo Marakwet Rift Valley located in the North Rift region of Kenya. The samples were analyzed at Moi University Chemistry Laboratory, Kenya between January 2020 and April 2020. Original Research Article Mbabazi et al.; IJRRD, 3(3): 8-16, 2020; Article no.IJRRD.59680 9 Methodology: Shade-dried samples were ground into powder and successively extracted with hexane, dichloromethane and ethanol. Antimicrobial activity ...