53 research outputs found

    Visionary scenarios for planning of energy-efficient buildings and neighbourhoods

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    Holistic approach is required to achieve energy-efficient design of buildings that are integrated to the neighbourhood energy systems. This paper presents selected phases of the design process in the form of visionary scenarios involving new technologies, numerical services and business models. Evaluation of potential impacts and the needed progress beyond the state of the art, as well as user requirements for the visionary stories are identified. As an example, visionary scenario for neighbourhood energy balancing in building design is presented in detail to demonstrate the usefulness of conducting energy analysis on a higher level, beyond a single building. The practical value of utilising the district energy analysis depends strongly on how the results are communicated to the relevant stakeholders and how they are utilised in the urban planning and related decision making. The district energy analyses, when performed iteratively during the progressing planning process, reveal to urban planners the effects of their decision choices. They could also provide sufficient base information for the decision making about the land use and urban development on the city level. To account for future changes that affect the energy system but are not handled properly in today’s design process, an eAdaptability concept is introduced.This research is funded by the European Commission under contract FP7-2013-NMP-ENVEeB through the Design4Energy project (Grant agreement no: 609380)

    Collaborative environment for energy-efficient buildings at an early design stage

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    This paper provides an approach for creating a collaborative environment for energy efficient buildings highlighting the issues required to be addressed at an early design phase. The paper will discuss a design scenario for a new built and suggest system architecture for implementing such scenario through the use of advanced simulation tools and modelling techniques to improve current practice in an early design phase. The suggested system architecture will allow multi-disciplinary teams to collectively and individually explore various energy solutions in a 3D interactive workspace to achieve optimum energy efficiency at building level

    Rational Design of a New Trypanosoma rangeli Trans-Sialidase for Efficient Sialylation of Glycans

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    This paper reports rational engineering of Trypanosoma rangeli sialidase to develop an effective enzyme for a potentially important type of reactivity: production of sialylated prebiotic glycans. The Trypanosoma cruzi trans-sialidase and the homologous T. rangeli sialidase has previously been used to investigate the structural requirements for trans-sialidase activity. We observed that the T. cruzi trans-sialidase has a seven-amino-acid motif (197-203) at the border of the substrate binding cleft. The motif differs substantially in chemical properties and substitution probability from the homologous sialidase, and we hypothesised that this motif is important for trans-sialidase activity. The 197-203 motif is strongly positively charged with a marked change in hydrogen bond donor capacity as compared to the sialidase. To investigate the role of this motif, we expressed and characterised a T. rangeli sialidase mutant, Tr13. Conditions for efficient trans-sialylation were determined, and Tr13's acceptor specificity demonstrated promiscuity with respect to the acceptor molecule enabling sialylation of glycans containing terminal galactose and glucose and even monomers of glucose and fucose. Sialic acid is important in association with human milk oligosaccharides, and Tr13 was shown to sialylate a number of established and potential prebiotics. Initial evaluation of prebiotic potential using pure cultures demonstrated, albeit not selectively, growth of Bifidobacteria. Since the 197-203 motif stands out in the native trans-sialidase, is markedly different from the wild-type sialidase compared to previous mutants, and is shown here to confer efficient and broad trans-sialidase activity, we suggest that this motif can serve as a framework for future optimization of trans-sialylation towards prebiotic production

    Safety and immunomodulatory effects of three probiotic strains isolated from the feces of breast-fed infants in healthy adults: SETOPROB study

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    We previously described the isolation and characterization of three probiotic strains from the feces of exclusively breast-fed newborn infants: Lactobacillus paracasei CNCM I-4034, Bifidobacterium breve CNCM I-4035 and Lactobacillus rhamnosus CNCM I-4036. These strains were shown to adhere to intestinal mucus in vitro, to be sensitive to antibiotics and to resist biliary salts and low pH. In the present study, a multicenter, randomized, double-blind, placebo-controlled trial with 100 healthy volunteers in three Spanish cities was carried out to evaluate the tolerance, safety, gut colonization and immunomodulatory effects of these three probiotics. Volunteers underwent a 15-day washout period, after which they were randomly divided into 5 groups that received daily a placebo, a capsule containing one of the 3 strains or a capsule containing a mixture of two strains for 30 days. The intervention was followed by another 15-day washout period. Patients did not consume fermented milk for the entire duration of the study. Gastrointestinal symptoms, defecation frequency and stool consistency were not altered by probiotic intake. No relevant changes in blood and serum, as well as no adverse events occurred during or after treatment. Probiotic administration slightly modified bacterial populations in the volunteers’ feces. Intestinal persistence occurred in volunteers who received L. rhamnosus CNCM I-4036. Administration of B. breve CNCM I-4035 resulted in a significant increase in fecal secretory IgA content. IL-4 and IL-10 increased, whereas IL-12 decreased in the serum of volunteers treated with any of the three strains. These results demonstrate that the consumption of these three bacterial strains was safe and exerted varying degrees of immunomodulatory effects.Part of the research currently in progress in the authors' laboratory is funded by the company Hero Spain, S. A. through the grant #3582 managed by the Fundacion General Empresa-Universidad de Granada

    Foot health education for people with rheumatoid arthritis —some patient perspectives

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    Background: Patient education is an important component of foot health management for people with rheumatoid arthritis (RA). The content and strategies for delivery require investigation in relation to the patients’needs. This study explores patients’ experiences of foot health education, to inform how the patients’ needs could be identified in clinical practice and inform effective education delivery. Method: A focus group was used to collect data. The dialogue was recorded digitally, transcribed verbatim and analysed using a structured thematic approach. Member checking and peer review added to credibility of the data. Six themes emerged; (i) content and purpose of patient education – what it should be, (ii) content of patient education – what it should not be, (iii) timing of information on foot health, (iv) method of delivery, (v) ability to engage with foot health education and (vi) the patient/practitioner relationship. Conclusions: This study identified aspects of patient education considered important by this group of patients in relation to content, timing and delivery, forming the basis for further research on clinical and patient focussed outcomes of patient education. Identifying health education needs and provision of supportive verbal and written information can foster an effective therapeutic relationship, supporting effective foot health education for people with RA
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