231 research outputs found

    About the origin of low wafer performance and crystal defect generation on seed-cast growth of industrial mono-like silicon ingots

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    The era of the seed-cast grown monocrystalline-based silicon ingots is coming. Mono-like, pseudomono or quasimono wafers are product labels that can be nowadays found in the market, as a critical innovation for the photovoltaic industry. They integrate some of the most favorable features of the conventional silicon substrates for solar cells, so far, such as the high solar cell efficiency offered by the monocrystalline Czochralski-Si (Cz-Si) wafers and the lower cost, high productivity and full square-shape that characterize the well-known multicrystalline casting growth method. Nevertheless, this innovative crystal growth approach still faces a number of mass scale problems that need to be resolved, in order to gain a deep, 100% reliable and worldwide market: (i) extended defects formation during the growth process; (ii) optimization of the seed recycling; and (iii) parts of the ingots giving low solar cells performance, which directly affect the production costs and yield of this approach. Therefore, this paper presents a series of casting crystal growth experiments and characterization studies from ingots, wafers and cells manufactured in an industrial approach, showing the main sources of crystal defect formation, impurity enrichment and potential consequences at solar cell level. The previously mentioned technological drawbacks are directly addressed, proposing industrial actions to pave the way of this new wafer technology to high efficiency solar cells

    From Raw Data to FAIR Data: The FAIRification Workflow for Health Research

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    BackgroundFAIR (findability, accessibility, interoperability, and reusability) guidingprinciples seek the reuse of data and other digital research input, output, and objects(algorithms, tools, and workflows that led to that data) making themfindable, accessible,interoperable, and reusable. GO FAIR - a bottom-up, stakeholder driven and self-governedinitiative-defined a seven-step FAIRificationprocessfocusingondata,butalsoindicatingtherequired work for metadata. This FAIRification process aims at addressing the translation ofraw datasets into FAIR datasets in a general way, without considering specific requirementsand challenges that may arise when dealing with some particular types of data.This work was performed in the scope of FAIR4Healthproject. FAIR4Health has received funding from the European Union’s Horizon 2020 research and innovationprogramme under grant agreement number 824666

    Module 5: Addressing Climate Change - Project: Training educators for the development of educational activities on climate change

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    This document addresses both global and national (Bolivian) responses to climate change and how to appropriately address it; includes cases studies documented in Bolivia

    Module 3: Causes of Climate Change - Project: Training educators for the development of educational activities on climate change

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    This document provides detailed explanations and information about the natural and human causes of climate change

    Module 2: Greenhouse Gas Effect - Project: Training educators for the development of educational activities on climate change

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    This document provides detailed information and an explanation of the Greenhouse Gas Effect and its associated cycles

    Letter written in the year 2070

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    This is a PDF version of a Powerpoint presentation to be used in the classroom. It conceptualizes the world in the future (2070), where water is scarce and how climate change has affected the quality of life for all living things. The presentation is also available as a Word document (just text)

    Climate change curriculum development guide for educators

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    This Powerpoint identifies existing challenges encountered in teaching about climate change in Bolivia; objectives of the national educational project of teaching about climate change; outlines the expected results and impact; and the general strategy of the project. In addition, it also provides additional visuals from each of the teaching modules

    Criterios biológicos y ecológicos: aportes para la identificación, caracterización y delimitación de los humedales interiores de Colombia.

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    Este producto es elaborado por el Programa Biología de la Conservación y Uso de la Biodiversidad en el marco del convenio 005 (13-014) entre el Instituto Humboldt y el Fondo Adaptación, en este documento se asume los principios generales de los ecosistemas, en los que se caracterizan como sistemas complejos, abiertos, dinámicos e integrados en donde los patrones ecológicas y la diversidad biológica son el resultado de un proceso biogeográfico que a su vez es afectado por procesos antrópicos. Es por ello que los ecosistemas de humedales de interior son considerados unidades funcionales en los que son necesarias las conexiones de la transición de hábitats en función de la pendiente natural (cuenca aguas arriba y abajo), hacia los ecosistemas adyacentes terrestres y dentro del cuerpo de agua (entre las zonas someras y profundas).Bogotá, ColombiaPrograma Biología de la Conservación y Uso de la Biodiversida
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