La adquisición y desarrollo del lenguaje en la etapa de 0 a 3 años. Recursos lingüísticos

Con el presente trabajo pretendo transmitir la importancia que tiene el lenguaje oral en el desarrollo de los niños y niñas. Para ello ha sido necesario examinar las diferentes teorías que tratan de explicar la adquisición del lenguaje, así como conocer su desarrollo evolutivo.+ Teniendo en cuenta el papel preponderante del lenguaje, propongo una serie de actividades que se pueden llevar a cabo con niños y niñas en el primer ciclo de educación infantil, a través de las cuales pretendo estimular de forma correcta y motivadora el lenguaje.Grado en Educación Infanti

Borderlands and Mestiza consciousness in Appalachia: Latina undergraduate experiences in a Predominantly White Institution

This qualitative phenomenological study explores the experiences of eight undergraduate Latinas in a Predominantly White Institution in the Appalachian region using Gloria Anzaldúa’s insights on Borderlands and Mestiza consciousness. A vast majority of the studies focused on the Latinx college student population that takes place in states and tertiary institutions with a dense concentration of Latinx population, leaving rural areas—especially the Appalachian region— unexplored. There is, as well, a scarcity of studies in research focused on four-year-degree-granting institutions in which Latinx are highly underrepresented. A substantial number of studies continue presenting Latinx students as a homogenous group despite their heterogeneity in terms of acculturation and assimilation levels, language(s) fluency and use, race, Hispanic background, and socioeconomic status, to name a few. Particularly, the educational experience of Latinas has been framed under educational deficits and cultural stereotypes. To counteract this view, the theories and praxis developed by Chicana scholars provide a new lens that emphasizes the singularity of the Latina student in an educational system which oppresses her. Anzaldúa’s (1987) idea of borderlands explains the physical and metaphorical spaces that Latinas navigate to construct their identity along the Mexico-U.S. border. She overturned the pejorative connotations of the term mestiza to posit a history of resistance “by developing a tolerance for contradictions, a tolerance for ambiguity” (p. 77). This study transposes these ideas of identity, consciousness, and borders to the Appalachian Mountains to explore how the spaces of a college campus constitute invitations or barriers to trespass borders, promote self-reflection, and create new realities through experiences. Using deep interviews and informal pláticas, this study explores how the participants perceive their college experiences, and more specifically, how their identity as Latinas informed such experiences. The participants shared experiences of microaggressions, isolation, and loneliness, both at individual and institutional level, and both outside and within the Latinx community. The study found intense reflections on the mental, emotional, and spiritual paralysis that implies finding their sense of belonging on campus. The study deepened what the students understood about a Latina identity and an Appalachian identity. Finally, the study used Anzaldúa’s path of conocimiento to analyze the mental and emotional journey in which the students tried to make sense of their experiences and emerge with a new consciousness of their identities—one that is flexible, resistant, and solidary—in the Appalachian borderlands

Diagnosis and Management of Grain-Induced Asthma

Grain-induced asthma is a frequent occupational allergic disease mainly caused by inhalation of cereal flour or powder. The main professions affected are bakers, confectioners, pastry factory workers, millers, farmers, and cereal handlers. This disorder is usually due to an IgE-mediated allergic response to inhalation of cereal flour proteins. The major causative allergens of grain-related asthma are proteins derived from wheat, rye and barley flour, although baking additives, such as fungal α-amylase are also important. This review deals with the current diagnosis and treatment of grain-induced asthma, emphasizing the role of cereal allergens as molecular tools to enhance diagnosis and management of this disorder. Asthma-like symptoms caused by endotoxin exposure among grain workers are beyond the scope of this review. Progress is being made in the characterization of grain and bakery allergens, particularly cereal-derived allergens, as well as in the standardization of allergy tests. Salt-soluble proteins (albumins plus globulins), particularly members of the α-amylase/trypsin inhibitor family, thioredoxins, peroxidase, lipid transfer protein and other soluble enzymes show the strongest IgE reactivities in wheat flour. In addition, prolamins (not extractable by salt solutions) have also been claimed as potential allergens. However, the large variability of IgE-binding patterns of cereal proteins among patients with grain-induced asthma, together with the great differences in the concentrations of potential allergens observed in commercial cereal extracts used for diagnosis, highlight the necessity to standardize and improve the diagnostic tools. Removal from exposure to the offending agents is the cornerstone of the management of grain-induced asthma. The availability of purified allergens should be very helpful for a more refined diagnosis, and new immunomodulatory treatments, including allergen immunotherapy and biological drugs, should aid in the management of patients with this disorder

Nonlinear dynamics induced by parallel and orthogonal optical injection in 1550 nm Vertical-Cavity Surface-Emitting Lasers (VCSELs)

We report a first experimental study of the nonlinear dynamics appearing in a 1550 nm single-mode VCSEL subject to parallel and to orthogonal optical injection. For the first time to our knowledge we report experimentally measured stability maps identifying the boundaries between regions of different nonlinear dynamics for both cases of polarized injection. A rich variety of nonlinear behaviours, including periodic (limit cycle, period doubling) and chaotic dynamics have been experimentally observed. ©2010 Optical Society of America

Power and wavelength polarization bistability with very wide hysteresis cycles in a 1550nm-VCSEL subject to orthogonal optical injection

We have measured optical power and wavelength polarization bistability in a 1550nm-Vertical Cavity Surface-Emitting Laser (VCSEL) subject to orthogonally-polarized optical injection into the orthogonal polarization of the fundamental transverse mode. Optical bistability with very wide hysteresis cycles, up to four times wider than previously reported results has been measured for both the optical power and wavelength domain. We also report the experimental observation of three different shapes of polarization bistability, anticlockwise, clockwise and X-Shape bistability, all of them with wide hysteresis cycles. This rich variety of behaviour at the important wavelength of 1550 nm offers promise for the use of VCSELs for all-optical signal processing and optical switching/routing applications. ©2009 Optical Society of America

Significance of healthy viscous dietary fibres on the performance of gluten-free rice-based formulated breads

The impact of associated viscous dietary fibres (hydroxypropylmethylcellulose semi-firm – SFE- and weak – NE-gel forming, and barley ß-glucan, BBG) incorporated at different amounts (1.6–7.5%, flour basis) into gluten-free rice-based dough formulations on the breadmaking performance and staling behaviour of hydrated (70–110%, flour basis) fibre-flour composite blends has been investigated. Single BBG addition fails to mimic gluten visco-elasticity properly, but simultaneous incorporation of either SFE or NE contributes to bread improvement in terms of bigger volume and smoother crumb. 3.3 g of BBG (70% purity) and 104 mL of water addition to 100 g rice flour provided sensorially accepted breads (7.6/10) with a theoretical ß-glucan content of 1.24 g per 100 g GF bread that would allow a daily ß-glucan intake of 3 g provided a bread consumption of 240 g day−1. Complementary tests should be carried out to know the amount and molecular weight of ß-glucan in the final bread before assuring the nutritional benefit of this addition.Financial support of the Spanish Institutions Ministerio de Economía y Competitividad (Projects AGL2012-35088 and AGL2011-22669) and Comunidad de Castilla y León (Project VA252A12-2)Peer reviewe

The Biological Station Torretes (Ibi, Alicante): a space for the conservation of odonates

Los odonatos son indicadores biológicos de la calidad de los medios acuáticos, ya que requieren, en la mayoría de los casos, aguas limpias y bien oxigenadas para desarrollar sus etapas larvarias. Muchas especies han sido incluidas en la Lista Roja de especies amenazadas. Se ha llevado a cabo un estudio de la fauna de Odonatos en la Estación Biológica Torretes - Jardín Botánico de la Universidad de Alicante (Ibi, Alicante), un espacio de bosque mediterráneo de 53 hectáreas, que está gestionado por el Instituto de Investigación CIBIO de la Universidad de Alicante. Este centro está destinado a investigar y difundir el valor de la biodiversidad y la conservación. Se han estudiado diversos puntos de agua permanentes con el objetivo de determinar áreas de conservación de la biodiversidad. En la estación biológica se registraron 16 especies de odonatos de los 28 citadas en ambientes naturales para la provincia de Alicante, lo que resaltan la importancia de este espacio natural en la conservación de estos insectos.Odonates are biological indicators of the aquatic environments quality, because them require, in most cases, clean and well oxygenated waters to develop their larval stages. Many species have been included in the Red List of threatened species for their vulnerability to contaminated environments. A study of odonata fauna was carried out in several permanent water points in the Biological Station – Botanical Garden of Torretes (Ibi, Alicante), a Mediterranean forest space of 53 hectares, managed by the Research Institute CIBIO of the University of Alicante. This center aims to investigate and disseminate the value of biodiversity and conservation. In the biological station was collected 16 species Odonates of the 28 reported in natural environments for the Alicante province, which highlight the importance of this natural space in the conservation and biodiversity of these insects

Distribution and substrate preference of Simuliidae (Diptera) in the river Serpis (south-eastern Spain)

Se analiza la distribución de las distintas especies de simúlidos encontradas a lo largo del cauce del río Serpis y su relación con el sustrato, categorizado como rocoso y vegetal. De las siete especies capturadas, sólo Simulium velutinum (Santos Abreu, 1922) y Simulium ornatum Meigen, 1818 mostraron preferencia por el sustrato vegetal.We study the distribution of the blackfly species found along the river Serpis and their relationship with the substrate on which they were found, which was categorized as bedrock and vegetal substrate. Out of the seven captured species, only Simulium velutinum (Santos Abreu, 1922) and Simulium ornatum Meigen, 1818 showed a preference for the vegetal substrate

Los orígenes griegos de una ciudad de Pisidia: Selge, Esparta y Calcante

An inscription and a coin from imperial times prove the close relationships between the Selgians of Pisidia and the Lacedaemonians of Peloponnese. These relationships are based on a kinship (syggéneia) which was forged in hellenistic times as a consequence of Alexander the Great´s conquests. Many indigenous communities of Anatolia, which are eager to see their Hellenic identity recognised and to join the culture of power, seek or create legends in order to tie their origins to the Greek world. In this context, the Selgians establish a kinship with the Lacedaemonians, as Polybius says. According to Curty´s conclussions (1995, 2001), its basis should be mythical, but Strabo´s words, who adds Calchas as its first founder, seem to point out a colonial link. In the next lines, it is analysed the meaning and the aim of the Selge´s Spartan kinship and of Calchas as its mythical founder. In addittion to this, we look for their real and fictional background.Una inscripción y una moneda imperiales atestiguan las estrechas relaciones que mantenían los selgeos de Pisidia con los lacedemonios del Peloponeso, basadas en un parentesco (syggéneia) forjado ya en época helenística como consecuencia de las conquistas de Alejandro Magno. Muchas comunidades indígenas anatolias, deseosas de ver reconocida su identidad helénica y adherirse a la cultura del poder, buscan o crean leyendas que vinculen sus orígenes con el mundo griego. En este contexto, los selgeos se emparentan con los lacedemonios, tal como refiere Polibio. Su fundamento, según las conclusiones de Curty (1995, 2001), debería ser un entronque mítico, pero del testimonio de Estrabón, que añade a Calcante como primer fundador, se desprende más bien un parentesco colonial. En las siguientes líneas se analiza el significado y la finalidad del parentesco espartano de Selge y de Calcante como su fundador mítico, así como su trasfondo real y ficticio