99 research outputs found

    Морфофункциональная характеристика ворсинчатого хориона в ранние сроки беременности при наличии урогенитальной инфекции

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    The morphological structure of the chorion villi in I trimester of pregnancy is studied at ureaplasmas and mycoplasmas infections. Established signs of the accelerated maturing of the villi, strengthened proliferation of trophoblast, increased of stromal and vascular components of chorion have been revealed.Изучено морфологическое строение ворсинчатого хориона в первом триместре беременности при уреа- и микоплазменном инфицировании. Были выявлены признаки ускоренного созревания ворсинчатого дерева, проявляющиеся усиленной пролиферацией трофобластического эпителия, приростом стромального и сосудистого компонентов ворсин

    The conceptualisation of a modified formative assessment model for non-verbal students with autism and severe learning difficulties.

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    The popularity of formative assessment has increased since the publication of work by Black and Wiliam in 1998. Even though it is a useful teaching tool, in most cases it has only been possible to use it for students with high levels of cognitive and communicative ability. The aim of this article is to propose a modified, personalisable model of formative assessment for non-verbal students with autism and severe learning difficulties. Five students with autism and severe learning difficulties participated in systematic video observations over a period of eight weeks, during which student behaviour and attainment were recorded. The behaviour checklist gave an accurate representation of the students' level of engagement and predicted attainment, but differences in passive learning objectives (those requiring passive co-operation) and active ones (those requiring active contribution) were noted. The introduction of engaging resources improved engagement, but tangible rewards had a negative effect on attainment. Praise had a positive effect on engagement and attainment

    Robustness and uncertainties in global multivariate wind-wave climate projections

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    Understanding climate-driven impacts on the multivariate global wind-wave climate is paramount to effective offshore/coastal climate adaptation planning. However, the use of single-method ensembles and variations arising from different methodologies has resulted in unquantified uncertainty amongst existing global wave climate projections. Here, assessing the first coherent, community-driven, multi-method ensemble of global wave climate projections, we demonstrate widespread ocean regions with robust changes in annual mean significant wave height and mean wave period of 5–15% and shifts in mean wave direction of 5–15°, under a high-emission scenario. Approximately 50% of the world’s coastline is at risk from wave climate change, with ~40% revealing robust changes in at least two variables. Furthermore, we find that uncertainty in current projections is dominated by climate model-driven uncertainty, and that single-method modelling studies are unable to capture up to ~50% of the total associated uncertainty

    Circannual rhythms in hormonal regulation of gender differences in conditions of Western Siberia

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    El vino chileno : evolución de un producto de exportación

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    Tesis (Ingeniería Comercial)El vino ha sido desde siempre un producto emblemático y muy tradicional en Chile ya que está ligado fuertemente a su cultura e idiosincrasia. La vid encontró en Chile un medio ecológico muy favorable, tanto en la zona central como en la zona centro sur, destacando la fertilidad del suelo, el vigor de las vides y la producción del vino, como consta en las crónicas de la época de la Conquista y posteriormente de la Colonia. Desde el siglo pasado la producción, comercio y consumo de vino se han constituido en actividades muy importantes dentro del desarrollo nacional, pero nadie duda que es en nuestros días que se vive el apogeo del vino Chileno, comenzando este a gozar de un reconocimiento nacional e internacional. El presente seminario de tesis consiste en conocer y descubrir al "VINO CHILENO" y los medios o ambientes que lo rodean desde sus orígenes a la actualidad. La idea central es presentar el "PRODUCTO VINO" desde que se fabrica hasta que se consume, mostrando los aspectos técnicos que hacen posible su producción, el marco legal que regula la actividad vitivinícola y los agentes que facilitan o hacen posible la operación del negocio del vino. Debido al gran auge, en los últimos años, de las exportaciones de vino Chileno hemos considerado abarcar este tema para poder apreciar la evolución de los envíos al exterior y el proceso a través del cual el vino Chileno llega hasta otros mercados. Además, para reflejar el momento que hoy vive el negocio del vino se presentan diversas consideraciones de la actualidad del mismo. Ya que se cuenta con escasa literatura sobre el vino y que la existente se centra solo en aspectos específicos pretendemos entregar, con esta tesis de grado, un aporte a la cultura general sobre la actividad vitícola

    The evolution of sub-monsoon systems in the Afro-Asian monsoon region during the Holocene– comparison of different transient climate model simulations

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    The recently proposed global monsoon hypothesis interprets monsoon systems as part of one global-scale atmospheric overturning circulation, implying a connection between the regional monsoon systems and an in-phase behaviour of all northern hemispheric monsoons on annual timescales (Trenberth et al., 2000). Whether this concept can be applied to past climates and variability on longer timescales is still under debate, because the monsoon systems exhibit different regional characteristics such as different seasonality (i.e. onset, peak and withdrawal). To investigate the interconnection of different monsoon systems during the pre-industrial Holocene, five transient global climate model simulations have been analysed with respect to the rainfall trend and variability in different sub-domains of the Afro-Asian monsoon region. Our analysis suggests that on millennial timescales with varying orbital forcing, the monsoons do not behave as a tightly connected global system. According to the models, the Indian and North African monsoons are coupled, showing similar rainfall trend and moderate correlation in centennial rainfall variability in all models. The East Asian monsoon changes independently during the Holocene. The dissimilarities in the seasonality of the monsoon sub-systems lead to a stronger response of the North African and Indian monsoon systems to the Holocene insolation forcing than of the East Asian monsoon and affect the seasonal distribution of Holocene rainfall variations. Within the Indian and North African monsoon domain, precipitation solely changes during the summer months, showing a decreasing Holocene precipitation trend. In the East Asian monsoon region, the precipitation signal is determined by an increasing precipitation trend during spring and a decreasing precipitation change during summer, partly balancing each other. A synthesis of reconstructions and the model results do not reveal an impact of the different seasonality on the timing of the Holocene rainfall optimum in the different sub-monsoon systems. Rather they indicate locally inhomogeneous rainfall changes and show that single palaeo-records should not be used to characterise the rainfall change and monsoon evolution for entire monsoon sub-systems
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