Aerodynamics measurements in a wind tunnel

2018/201

¿Arqueología, qué es eso? Categorías para la detección de ideas previas del alumnado en torno a la arqueología

This paper is part of a broader research in which, based on the drawing of an archaeologist, we intend to identify what students know about archaeology and, thereby, detect those stereotypes or misconceptions about this science and the people who practice it. More specifically, this article presents a categorization system designed for the interpretation of these drawings. First, a bibliographical emptying of the research done on erroneous ideas of archaeology has been carried out, and, on this basis, a series of hypotheses have been raised as starting point to define the proposed categories. The result provides an up-to-date tool that facilitates the interpretation of the data in relation to the profiles and actions with which archaeology is associated, as well as its object of study. Its greatest contribution, however, is the incorporation of a series of categories, which have hitherto not been considered, in order to categorize knowledge of the archaeological method through a series of formulation levels.Este trabajo se enmarca en una investigación más amplía en la que, partiendo del dibujo de un arqueólogo/a, se pretende identificar qué sabe el alumnado en torno a la arqueología y detectar así aquellos estereotipos o creencias erróneas sobre esta ciencia y las personas que la llevan a cabo. En concreto, en este artículo se presenta el sistema de categorización diseñado para la interpretación de los dibujos. Para su elaboración se ha llevado a cabo un vaciado bibliográfico en torno a las investigaciones realizadas en relación a las ideas erróneas sobre la arqueología. A partir del mismo, se han planteado una serie de hipótesis como punto de partida de las categorías propuestas. El resultado ofrece una herramienta actualizada que facilita la interpretación de los datos en relación a los perfiles y acciones con los que se asocia la arqueología, así como su objeto de estudio. Sin embargo, su mayor aportación es la incorporación de una serie de categorías no planteadas hasta el momento, de cara a categorizar el conocimiento del método arqueológico a través de una serie de niveles de formulación

Archaeology, what’s that? Categories for the detection of previous ideas of the students regarding archaeology

Este trabajo se enmarca en una investigación más amplía en la que, partiendo del di-bujo de un arqueólogo/a, se pretende identificar qué sabe el alumnado en torno a la ar-queología y detectar así aquellos estereotipos o creencias erróneas sobre esta ciencia y las personas que la llevan a cabo. En concreto, en este artículo se presenta el sistema de categorización diseñado para la interpretación de los dibujos. Para su elaboración se ha llevado a cabo un vaciado bibliográfico en torno a las investigaciones realizadas en relación a las ideas erróneas sobre la arqueología. A partir del mismo, se han plan-teado una serie de hipótesis como punto de partida de las categorías propuestas. El resultado ofrece una herramienta actualizada que facilita la interpretación de los datos en relación a los perfiles y acciones con los que se asocia la arqueología, así como su objeto de estudio. Sin embargo, su mayor aportación es la incorporación de una serie de categorías no planteadas hasta el momento, de cara a categorizar el conocimiento del método arqueológico a través de una serie de niveles de formulación.This paper is part of a broader research in which, based on the drawing of an archaeologist, we intend to identify what students know about archaeology and, thereby, detect those stereotypes or misconceptions about this science and the people who practice it. More specifically, this article presents a categorization system designed for the interpretation of these drawings. First, a bibliographical emptying of the research done on erroneous ideas of archaeology has been carried out, and, on this basis, a series of hypotheses have been raised as starting point to define the proposed categories. The result provides an up-to-date tool that facilitates the interpretation of the data in relation to the profiles and actions with which archaeology is associated, as well as its object of study. Its greatest contribution, however, is the incorporation of a series of categories, which have hitherto not been considered, in order to categorize knowledge of the archaeological method through a series of formulation levels

Additively manufactured lattice structures with controlled transverse isotropy for orthopedic porous implants

Additively manufactured lattice structures enable the design of tissue scaffolds with tailored mechanical properties, which can be implemented in porous biomaterials. The adaptation of bone to physiological loads results in anisotropic bone tissue properties which are optimized for site-specific loads; therefore, some bone sites are stiffer and stronger along the principal load direction compared to other orientations. In this work, a semi-analytical model was developed for the design of transversely isotropic lattice structures that can mimic the anisotropy characteristics of different types of bone tissue. Several design possibilities were explored, and a particular unit cell, which was best suited for additive manufacturing was further analyzed. The design of the unit cell was parameterized and in-silico analysis was performed via Finite Element Analysis. The structures were manufactured additively in metal and tested under compressive loads in different orientations. Finite element analysis showed good correlation with the semi-analytical model, especially for elastic constants with low relative densities. The anisotropy measured experimentally showed a variable accuracy, highlighting the deviations from designs to additively manufactured parts. Overall, the proposed model enables to exploit the anisotropy of lattice structures to design lighter scaffolds with higher porosity and increased permeability by aligning the scaffold with the principal direction of the load

Sistema endokannabinoideak emearen ugal-fisiologia modulatzen du

Sistema kannabinideak ugal-sistemaren prozesu desberdinetan parte hartzen du, eta jakina da kannabinoide exogenoen kontsumo kroniko sistemikoa kaltegarria dela ugalketa-prozesuetarako; sistema endokannabinoidean izan daitezkeen gabeziak, halaber, ez dira mesedegarriak. Frogatu da sistema endokannabinoidearen edozein osagairen aktibazioak edo eraldaketek eragina izan dezaketela ugalketaren fase desberdinen erregulazioan eta bizitza berri baten hasiera arriskuan jar dezaketela. Horregatik, kannabinoideen erabilera lagungarria izan liteke, antzutasunaren diagnostikoan biomarkatzaile posible gisa edota praktika klinikoan tratatzeko itu terapeutiko posible bezala.; The cannabinoid system is involved in many aspects of reproduction and it is known that the systemic chronic use of exogenous CBs is deleterious to reproductive processes. However, possible deficiencies in the endocannabinoid system are also harmful. Therefore, both CB under and overexposure could affect the regulation of the different phases of reproduction and endanger the start of a new life. Hence, the use of cannabinoids as a possible biomarker in the diagnosis of sterility or as a possible therapeutic target in clinical practice has begun to be studied

Feminist Pedagogy in the STEM Research Laboratory: an Intersectional Approach

The research laboratory is a crucial and indispensable classroom for STEM education. It is where we practice science as a craft and test the ideas that awaken our curiosity, allowing us to create knowledge. It is also a space where challenges await and struggles are imminent. Thus, supporting mentees through their traineeship in a research lab requires an intersectional approach and lens to provide equitable mentorship and guidance. The concept of intersectionality, initially devised by Black feminist professor Kimberlé W. Crenshaw, can be employed to generate practices and frameworks that democratize laboratory culture and provide trainees with a space in which they shape the laboratory culture while helping them recognize their positionality. This critical commentary provides insights and experiences when incorporating feminist frameworks to sustain equitable working environments in the research lab setting, specifically in leading a research group composed predominantly of Puerto Rican women

Open spaces and public life spatialities: a conceptual proposal to the research of the country's urban open spaces system

Este texto é o resultado da primeira etapa de trabalhos da fase número quatro do Projeto de pesquisa Quapá – Quadro do Paisagismo no Brasil, em desenvolvimento desde 1994 no Laboratório da Paisagem da FAUUSP, e que se voltará para o estudo teórico e metodológico dos sistemas de espaços livres na cidade brasileira, tendo como foco um conjunto das principais cidades de médio e grande porte do país. São apresentados conceitos que nortearão o novo processo de pesquisa, destacando-se os de espaço livre, sistema de espaços livres e áreas verdes.This paper is the result of the first part of the newest stage of projeto Quapá – Quadro do Paisagismo no Brasil in developing at FAUUSP. Nowadays the main subject of the research is the discussion of the adequate concepts to the open and green spaces in a brazilian urban reality and to investigate how it has been its development in the main brazilian cities

Aerodynamics measurements in a wind tunnel

2018/201

Cell Behaviors during Closure of the Choroid Fissure in the Developing Eye

Coloboma is a defect in the morphogenesis of the eye that is a consequence of failure of choroid fissure fusion. It is among the most common congenital defects in humans and can significantly impact vision. However, very little is known about the cellular mechanisms that regulate choroid fissure closure. Using high-resolution confocal imaging of the zebrafish optic cup, we find that apico-basal polarity is re-modeled in cells lining the fissure in proximal to distal and inner to outer gradients during fusion. This process is accompanied by cell proliferation, displacement of vasculature, and contact between cells lining the choroid fissure and periocular mesenchyme (POM). To investigate the role of POM cells in closure of the fissure, we transplanted optic vesicles onto the yolk, allowing them to develop in a situation where they are depleted of POM. The choroid fissure forms normally in ectopic eyes but fusion fails in this condition, despite timely apposition of the nasal and temporal lips of the retina. This study resolves some of the cell behaviors underlying choroid fissure fusion and supports a role for POM in choroid fissure fusion