396 research outputs found
Promoción turística sostenible: i-Naturhouse
La eficiencia energética y el aprovechamiento de las fuentes de energía naturales se han convertido en uno de los principales temas de investigación de Universidades y Gobiernos. Por ello, no es nada nuevo la presentación de un proyecto basado en una construcción que aprovecha los recursos naturales para la generación y posterior autoconsumo o venta de
electricidad a la red. Nuestro proyecto es mucho más ambicioso y creemos que puede tener
un fuerte impacto en un mercado global al utilizar todas las nuevas tecnologías existentes en campos como el bioclimatismo, energía solar, energía eólica, microcogeneración, telecomunicaciones, automatización, freecooling, iluminación y eficiencia energética. Deja de ser por tanto una solución parcial que aprovecha únicamente el conocimiento en algunos
ámbitos de la ingeniería, para dar paso a una solución que se desarrolla en los campos de la Ingeniería Industrial en general (Mecánica, Energética, Eléctrica…etc.) las Telecomunicaciones, así como en el área de Economía y Finanzas.
Nuestro proyecto aunque lo localizamos en la ciudad de Lleida, es un proyecto de alcance e
impacto global, y en él analizamos en detalle cada uno de los puntos principales que intervendrían en este nuevo modelo de sensibilización de la sociedad hacia el consumo energético sostenible.El proyecto i‐Naturhouse es un trabajo de combinación de diferentes tecnologías con un fin común y en el cual éstas se combinan de forma equilibrada ofreciendo a la sociedad una herramienta que con un gran potencial, si tiene el alcance que se le proyecta. El proyecto ha sido dividido en 9 apartados. El primero es de introducción y contextualización para pasar a
analizar posteriormente un caso concreto que ubicaríamos en la población de Lleida
Promoción turística sostenible: i-Naturhouse
La eficiencia energética y el aprovechamiento de las fuentes de energía naturales se han convertido en uno de los principales temas de investigación de Universidades y Gobiernos. Por ello, no es nada nuevo la presentación de un proyecto basado en una construcción que aprovecha los recursos naturales para la generación y posterior autoconsumo o venta de
electricidad a la red. Nuestro proyecto es mucho más ambicioso y creemos que puede tener
un fuerte impacto en un mercado global al utilizar todas las nuevas tecnologías existentes en campos como el bioclimatismo, energía solar, energía eólica, microcogeneración, telecomunicaciones, automatización, freecooling, iluminación y eficiencia energética. Deja de ser por tanto una solución parcial que aprovecha únicamente el conocimiento en algunos
ámbitos de la ingeniería, para dar paso a una solución que se desarrolla en los campos de la Ingeniería Industrial en general (Mecánica, Energética, Eléctrica…etc.) las Telecomunicaciones, así como en el área de Economía y Finanzas.
Nuestro proyecto aunque lo localizamos en la ciudad de Lleida, es un proyecto de alcance e
impacto global, y en él analizamos en detalle cada uno de los puntos principales que intervendrían en este nuevo modelo de sensibilización de la sociedad hacia el consumo energético sostenible.El proyecto i‐Naturhouse es un trabajo de combinación de diferentes tecnologías con un fin común y en el cual éstas se combinan de forma equilibrada ofreciendo a la sociedad una herramienta que con un gran potencial, si tiene el alcance que se le proyecta. El proyecto ha sido dividido en 9 apartados. El primero es de introducción y contextualización para pasar a
analizar posteriormente un caso concreto que ubicaríamos en la población de Lleida
On the basic computational structure of gene regulatory networks
Gene regulatory networks constitute the first layer of the cellular
computation for cell adaptation and surveillance. In these webs, a set of
causal relations is built up from thousands of interactions between
transcription factors and their target genes. The large size of these webs and
their entangled nature make difficult to achieve a global view of their
internal organisation. Here, this problem has been addressed through a
comparative study for {\em Escherichia coli}, {\em Bacillus subtilis} and {\em
Saccharomyces cerevisiae} gene regulatory networks. We extract the minimal core
of causal relations, uncovering the hierarchical and modular organisation from
a novel dynamical/causal perspective. Our results reveal a marked top-down
hierarchy containing several small dynamical modules for \textit{E. coli} and
\textit{B. subtilis}. Conversely, the yeast network displays a single but large
dynamical module in the middle of a bow-tie structure. We found that these
dynamical modules capture the relevant wiring among both common and
organism-specific biological functions such as transcription initiation,
metabolic control, signal transduction, response to stress, sporulation and
cell cycle. Functional and topological results suggest that two fundamentally
different forms of logic organisation may have evolved in bacteria and yeast.Comment: This article is published at Molecular Biosystems, Please cite as:
Carlos Rodriguez-Caso, Bernat Corominas-Murtra and Ricard V. Sole. Mol.
BioSyst., 2009, 5 pp 1617--171
Familial hypercholesterolaemia in children and adolescents from 48 countries: a cross-sectional study
Background: Approximately 450 000 children are born with familial hypercholesterolaemia worldwide every year, yet only 2·1% of adults with familial hypercholesterolaemia were diagnosed before age 18 years via current diagnostic approaches, which are derived from observations in adults. We aimed to characterise children and adolescents with heterozygous familial hypercholesterolaemia (HeFH) and understand current approaches to the identification and management of familial hypercholesterolaemia to inform future public health strategies. Methods: For this cross-sectional study, we assessed children and adolescents younger than 18 years with a clinical or genetic diagnosis of HeFH at the time of entry into the Familial Hypercholesterolaemia Studies Collaboration (FHSC) registry between Oct 1, 2015, and Jan 31, 2021. Data in the registry were collected from 55 regional or national registries in 48 countries. Diagnoses relying on self-reported history of familial hypercholesterolaemia and suspected secondary hypercholesterolaemia were excluded from the registry; people with untreated LDL cholesterol (LDL-C) of at least 13·0 mmol/L were excluded from this study. Data were assessed overall and by WHO region, World Bank country income status, age, diagnostic criteria, and index-case status. The main outcome of this study was to assess current identification and management of children and adolescents with familial hypercholesterolaemia. Findings: Of 63 093 individuals in the FHSC registry, 11 848 (18·8%) were children or adolescents younger than 18 years with HeFH and were included in this study; 5756 (50·2%) of 11 476 included individuals were female and 5720 (49·8%) were male. Sex data were missing for 372 (3·1%) of 11 848 individuals. Median age at registry entry was 9·6 years (IQR 5·8-13·2). 10 099 (89·9%) of 11 235 included individuals had a final genetically confirmed diagnosis of familial hypercholesterolaemia and 1136 (10·1%) had a clinical diagnosis. Genetically confirmed diagnosis data or clinical diagnosis data were missing for 613 (5·2%) of 11 848 individuals. Genetic diagnosis was more common in children and adolescents from high-income countries (9427 [92·4%] of 10 202) than in children and adolescents from non-high-income countries (199 [48·0%] of 415). 3414 (31·6%) of 10 804 children or adolescents were index cases. Familial-hypercholesterolaemia-related physical signs, cardiovascular risk factors, and cardiovascular disease were uncommon, but were more common in non-high-income countries. 7557 (72·4%) of 10 428 included children or adolescents were not taking lipid-lowering medication (LLM) and had a median LDL-C of 5·00 mmol/L (IQR 4·05-6·08). Compared with genetic diagnosis, the use of unadapted clinical criteria intended for use in adults and reliant on more extreme phenotypes could result in 50-75% of children and adolescents with familial hypercholesterolaemia not being identified. Interpretation: Clinical characteristics observed in adults with familial hypercholesterolaemia are uncommon in children and adolescents with familial hypercholesterolaemia, hence detection in this age group relies on measurement of LDL-C and genetic confirmation. Where genetic testing is unavailable, increased availability and use of LDL-C measurements in the first few years of life could help reduce the current gap between prevalence and detection, enabling increased use of combination LLM to reach recommended LDL-C targets early in life
TRY plant trait database – enhanced coverage and open access
Plant traits - the morphological, anatomical, physiological, biochemical and phenological characteristics of plants - determine how plants respond to environmental factors, affect other trophic levels, and influence ecosystem properties and their benefits and detriments to people. Plant trait data thus represent the basis for a vast area of research spanning from evolutionary biology, community and functional ecology, to biodiversity conservation, ecosystem and landscape management, restoration, biogeography and earth system modelling. Since its foundation in 2007, the TRY database of plant traits has grown continuously. It now provides unprecedented data coverage under an open access data policy and is the main plant trait database used by the research community worldwide. Increasingly, the TRY database also supports new frontiers of trait‐based plant research, including the identification of data gaps and the subsequent mobilization or measurement of new data. To support this development, in this article we evaluate the extent of the trait data compiled in TRY and analyse emerging patterns of data coverage and representativeness. Best species coverage is achieved for categorical traits - almost complete coverage for ‘plant growth form’. However, most traits relevant for ecology and vegetation modelling are characterized by continuous intraspecific variation and trait–environmental relationships. These traits have to be measured on individual plants in their respective environment. Despite unprecedented data coverage, we observe a humbling lack of completeness and representativeness of these continuous traits in many aspects. We, therefore, conclude that reducing data gaps and biases in the TRY database remains a key challenge and requires a coordinated approach to data mobilization and trait measurements. This can only be achieved in collaboration with other initiatives
TRY plant trait database - enhanced coverage and open access
Plant traits—the morphological, anatomical, physiological, biochemical and phenological characteristics of plants—determine how plants respond to environmental factors, affect other trophic levels, and influence ecosystem properties and their benefits and detriments to people. Plant trait data thus represent the basis for a vast area of research spanning from evolutionary biology, community and functional ecology, to biodiversity conservation, ecosystem and landscape management, restoration, biogeography and earth system modelling. Since its foundation in 2007, the TRY database of plant traits has grown continuously. It now provides unprecedented data coverage under an open access data policy and is the main plant trait database used by the research community worldwide. Increasingly, the TRY database also supports new frontiers of trait‐based plant research, including the identification of data gaps and the subsequent mobilization or measurement of new data. To support this development, in this article we evaluate the extent of the trait data compiled in TRY and analyse emerging patterns of data coverage and representativeness. Best species coverage is achieved for categorical traits—almost complete coverage for ‘plant growth form’. However, most traits relevant for ecology and vegetation modelling are characterized by continuous intraspecific variation and trait–environmental relationships. These traits have to be measured on individual plants in their respective environment. Despite unprecedented data coverage, we observe a humbling lack of completeness and representativeness of these continuous traits in many aspects. We, therefore, conclude that reducing data gaps and biases in the TRY database remains a key challenge and requires a coordinated approach to data mobilization and trait measurements. This can only be achieved in collaboration with other initiatives
Retrospective evaluation of whole exome and genome mutation calls in 746 cancer samples
Funder: NCI U24CA211006Abstract: The Cancer Genome Atlas (TCGA) and International Cancer Genome Consortium (ICGC) curated consensus somatic mutation calls using whole exome sequencing (WES) and whole genome sequencing (WGS), respectively. Here, as part of the ICGC/TCGA Pan-Cancer Analysis of Whole Genomes (PCAWG) Consortium, which aggregated whole genome sequencing data from 2,658 cancers across 38 tumour types, we compare WES and WGS side-by-side from 746 TCGA samples, finding that ~80% of mutations overlap in covered exonic regions. We estimate that low variant allele fraction (VAF < 15%) and clonal heterogeneity contribute up to 68% of private WGS mutations and 71% of private WES mutations. We observe that ~30% of private WGS mutations trace to mutations identified by a single variant caller in WES consensus efforts. WGS captures both ~50% more variation in exonic regions and un-observed mutations in loci with variable GC-content. Together, our analysis highlights technological divergences between two reproducible somatic variant detection efforts
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