466 research outputs found
Cluster size distribution of infection in a system of mobile agents
Clusters of infected individuals are defined on data from health
laboratories, but this quantity has not been defined and characterized by
epidemy models on statistical physics. For a system of mobile agents we
simulate a model of infection without immunization and show that all the
moments of the cluster size distribution at the critical rate of infection are
characterized by only one exponent, which is the same exponent that determines
the behavior of the total number of infected agents. No giant cluster survives
independent on the magnitude of the rate of infection.Comment: preprint for Physica A, proceedings of Medyfinol in La Seren
Changes in carbon stocks in Eucalyptus globulus Labill. plantations induced by different water and nutrient availability
Changes in the carbon stocks under different soil water and nutrient conditions were studied in Eucalyptus globulus Labill.
stands in a field experiment, at O ´ bidos (central Portugal). The treatments were irrigation plus a complete fertiliser solution to
simulate ‘near optimal’ nutrition (IF), irrigation only (I), and fertilisers added to rain-fed plots (F). The control (C) received
neither water nor fertilisers (except a small amount at planting). The production of biomass (aboveground), the litterfall and the
soil chemical composition were evaluated regularly during the experiment. Root biomass was estimated at the end of the
experiment. Carbon in biomass, litterfall and soil, increased significantly when water and/or nutrients were supplied, in
comparison to the control. The amount of carbon accumulated in the system, 6 years after planting, was 8.22, 10.22, 11.23 and
13.76 kg C m 2 in the control, F, I and IF treatments, respectively. The increase of carbon in the system during the same period
was 5.86, 7.86, 8.87 and 11.40 kg C m 2 in the control, F, I and IF treatments, respectively. This rise in carbon resulted from the
accumulation of long-lived woody biomass, which represented between 77.7 (in IF) and 82.9% (in the control) of the total rise in
carbon. Although water was the main limiting factor for biomass accumulation, the allocation of carbon to the soil was mainly
related to nutrient supply, irrespective of water availability. The amount of carbon stored belowground, i.e. soil and forest floor,
plus stumps and roots, reached 4.2, 4.7, 4.8 and 6.3 kg C m 2 in the control, F, I and IF treatments, respectively. The increase in
C in the mineral soil regarding the initial state was, in the same order as above, 0.21, 0.75, 0.58 and 1.21 kg C m 2. These values
were 3.6, 9.6, 6.6 and 10.6% of the C accumulated in the whole system, during the experimental period
Sustainability evaluation of a Portuguese “terroir” wine
The challenges of sustainability are transversal to all human activities, and the wine sector has its own role to play in the march for a more sustainable development. The proper definition of the most adequate measures and/or policies must be based on an objective and quantitative evaluation of the sustainability of a product or process. In this work the sustainability of a “terroir” wine is assessed taking into account its life cycle and using the following indicators: carbon and water footprint, material intensity, solid waste generated, worker turnover rate, investment in H&S training and EBITDA. All indicators are expressed per functional unit of 0.75 L of wine. The evaluation used data from the company complemented with data/information from the literature or life cycle inventory databases. To account for climatic variability, data from three consecutive years was used. Average values of 3.51 kgCO2eq and 481.4 L per functional unit were obtained for the carbon and water footprint respectively, both values within the range of values reported in the literature.To Sogrape Vinhos, S.A. for funding Project PP-IJUP2014-SOGRAPE. To FCT, for funding project IF/01093/2014/CP1249/CT0003, research grants IF/01093/2014 and SFRH/BPD/112003/2015, and Center for Innovation in Engineering and Industrial Technology - CIETI, UID/EQU/00305/2013. Financial support of POCI-01-0145-FEDER-006939 (Laboratory for Process Engineering, Environment, Biotechnology and Energy - LEPABE, UID/EQU/00511/2013) funded by FEDER through COMPETE2020-POCI and by national funds through FCT.info:eu-repo/semantics/publishedVersio
Ensino de Química para Surdos: Planejamento e Design de Módulo Instrucional Sobre Hidrocarbonetos e suas Propriedades
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Aspects Related to Venous Ulcer Healing and its Influence on Quality of Life
Nowadays, the varicose ulcers (VUs) are one of the most worrying leg ulcers and are an important global health problem, with high costs related to the treatment and its complications. Moreover, the quality of life (QOL) of the patient could be affected by pain, sleep disorders, functional impairment, depression, and isolation. The VU patient care is complex, and it is necessary to know the aspects that contribute to the healing process for developing effective strategies. The members of the multidisciplinary health team should identify sociodemographic, clinical, and care aspects that interfere in tissue repair and therefore impacting the QOL. Self-efficacy, adherence to treatment, and self-esteem are other important aspects also related to healing and QOL, with implications for health care and the multidisciplinary team. To sum up, the use of multidisciplinary protocols allows the systematization of care for people with VUs in order to standardize therapeutic interventions with the aim to decrease the healing process time and, as a consequence, to improve the QOL
Recovery of soil physical properties by green manure, liming, gypsum and pasture and spontaneous native species¹
Complete Genome Sequence Of A Vaccinal Newcastle Disease Virus Strain Isolated From An Owl (rhinoptynx Clamator)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)A Newcastle disease virus (NDV) was isolated in chicken embryonated eggs after detection by real-time reverse transcription- PCR (RRT-PCR) from a captive owl swab. The complete genome sequence of APMV-1/Rhinoptynx clamator/Brazil/22516/2009 (APMV-1, avian paramyxovirus type 1) was obtained using Illumina sequencing. Phylogenetic analysis of the complete genome classified the isolate within NDV class II genotype II. © 2016 Van Borm et al.46CNPq, Conselho Nacional de Desenvolvimento Científico e TecnológicoConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq
Sustainability evaluation of a Portuguese “terroir” wine
The challenges of sustainability are transversal to all human activities, and the wine sector has its own role to play in the march for a more sustainable development. The proper definition of the most adequate measures and/or policies must be based on an objective and quantitative evaluation of the sustainability of a product or process. In this work the sustainability of a “terroir” wine is assessed taking into account its life cycle and using the following indicators: carbon and water footprint, material intensity, solid waste generated, worker turnover rate, investment in H&S training and EBITDA. All indicators are expressed per functional unit of 0.75 L of wine. The evaluation used data from the company complemented with data/information from the literature or life cycle inventory databases. To account for climatic variability, data from three consecutive years was used. Average values of 3.51 kgCO2eq and 481.4 L per functional unit were obtained for the carbon and water footprint respectively, both values within the range of values reported in the literature
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