842 research outputs found

    Comparing Organic Urban Consumers in Developing and Developed Countries: First Results in Brazil and France

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    Despite numerous studies reporting on sustainable consumption or organic consumer profiles, there is a gap in thorough understanding of organic consumers in different places, since most of studies only investigate organic consumption in most developed countries. The goal of this paper is thus to compare French and Brazilian organic consumers, so as to know if people think and behave differently or similarly in different places. Individual interviews were conducted in each country, with consumers in organic producers market in Brazil, and consumers who buy organic products from farmers markets or local organic food network in France. Products were selected to cover examples of different choice situations such as imported organic products that compete with comparable products of local origin, or organic local products in supermarkets that compete with similar products from other distribution outlets. Results show common consumer concerns such as quality or personal and family health, and common preference for local and organic products but for different reasons. However, results also shed light on different patterns related to environmental concerns or commitment to supporting small or local farmers. The impacts of the findings of this study relate to a diversity of topics such as social mobilization for sustainable agriculture, local organic food networks and environmental concerns. ...French Abstract : De nombreuses recherches portent sur la consommation durable et le profil des consommateurs de produits biologiques, mais ces recherches portent sur la consommation dans les pays développés, et ne permettent pas de savoir s'il existe des différences de consommation entre pays développés et pays en développement. Le but de cet article est de comparer le comportement de consommateurs de produits biologiques en France et au Brésil, sur la base d'entretiens individuels permettant de comparer plusieurs situations de choix : produits biologiques importés en concurrence avec des produits locaux comparables, produits biologiques locaux disponibles en supermarché ou d'en d'autres circuits de distribution,... Les résultats mettent en évidence des attentes communes, comme la qualité ou la santé, et des préférences partagées pour les produits biologiques et locaux, mais pour des raisons différentes dans les deux échantillons. Les résultats montrent également que l'importance accordée aux préoccupations environnementales et au soutien aux petits producteurs locaux n'est pas la même dans les deux échantillons. Cette recherche conduit à des pistes de réflexion portant sur la mobilisation des consommateurs pour la consommation durable, les réseaux de production et consommation de produits biologiques et les préoccupations environnementales des consommateurs.ORGANIC FOOD; LOCAL FOOD; SUSTAINABLE CONSUMPTION; QUALITATIVE STUDY

    Identification of phenolic compounds and volative compounds in polyphenols-rich extract of hybrid vitis vinifera l. Cultivars and their antioxidant properties.

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    There is little knowledge about the phenolic compounds of hybrids grape cultivars reported in literature. This work aimed to characterize the bioactive and volatile compounds from new hybrids grape cultivars (Sweet sapphire-SS and Sweet surprise-SU). The antioxidant capacity and total phenolic content were evaluated using DPPH, ABTS, FRAP, ORAC and Folin – Ciocalteu assays, using water and acetone extracts.SLACA, 12. De 4 a 7 de Novembro de 2017

    Antiproliferative Activity on Human Colon Adenocarcinoma Cells and In Vitro Antioxidant Effect of Anthocyanin-Rich Extracts from Peels of Species of the Myrtaceae Family.

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    There is a significant indication of the beneficial health effects of fruit rich diets. Fruitsof native plant species have noticeably different phytochemicals and bioactive effects. The aim ofthis work was to characterize and compare the constituents of jabuticaba (Myrciaria jaboticaba, MJ),jamun-berry (Syzygium cumini, SC), and malay-apple (Syzygium malaccense, SM) extracts and theirinfluence on antioxidant activityin vitroand antiproliferative effects on human colon adenocarci-noma cells. According to the results, dried peel powders (DP) have a high anthocyanin content,phenolic compounds, and antioxidant activity when compared to freeze dried extracts (FD).M.jaboticabadried peel powder extract had a higher total anthocyanin and phenolic compounds content(802.90±1.93 and 2152.92±43.95 mg/100 g, respectively). A reduction in cell viability of HT-29cells after treatment withM. jaboticabaextracts (DP-MJ and FD-MJ) was observed via MTT assay.Flow cytometry showed that the treatment with the anthocyanin-rich extracts from MJ, SC, and SMhad an inhibitory impact on cell development due to G2/M arrest and caused a rise in apoptotic cellsin relation to the control group. The findings of this study highlight the potential of peel powdersfromMyrtaceaefruits as an important source of natural antioxidants and a protective effect againstcolon adenocarcinom

    Measurement of the Strong Coupling Constant from Inclusive Jet Production at the Tevatron pˉp\bar pp Collider

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    We report a measurement of the strong coupling constant, αs(MZ)\alpha_s(M_Z), extracted from inclusive jet production in ppˉp\bar{p} collisions at s=\sqrt{s}=1800 GeV. The QCD prediction for the evolution of αs\alpha_s with jet transverse energy ETE_T is tested over the range 40<ETE_T<450 GeV using ETE_T for the renormalization scale. The data show good agreement with QCD in the region below 250 GeV. In the text we discuss the data-theory comparison in the region from 250 to 450 GeV. The value of αs\alpha_s at the mass of the Z0Z^0 boson averaged over the range 40<ETE_T<250 GeV is found to be αs(MZ)=0.1178±0.0001(stat)0.0095+0.0081(exp.syst)\alpha_s(M_{Z})= 0.1178 \pm 0.0001{(\rm stat)}^{+0.0081}_{-0.0095}{\rm (exp. syst)}. The associated theoretical uncertainties are mainly due to the choice of renormalization scale (^{+6%}_{-4%}) and input parton distribution functions (5%).Comment: 7 pages, 3 figures, using RevTeX. Submitted to Physical Review Letter

    Proteases of haematophagous arthropod vectors are involved in blood-feeding, yolk formation and immunity : a review

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    Ticks, triatomines, mosquitoes and sand flies comprise a large number of haematophagous arthropods considered vectors of human infectious diseases. While consuming blood to obtain the nutrients necessary to carry on life functions, these insects can transmit pathogenic microorganisms to the vertebrate host. Among the molecules related to the blood-feeding habit, proteases play an essential role. In this review, we provide a panorama of proteases from arthropod vectors involved in haematophagy, in digestion, in egg development and in immunity. As these molecules act in central biological processes, proteases from haematophagous vectors of infectious diseases may influence vector competence to transmit pathogens to their prey, and thus could be valuable targets for vectorial control

    Promoting patient utilization of outpatient cardiac rehabilitation: A joint International Council and Canadian Association of Cardiovascular Prevention and Rehabilitation position statement

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    Background: Cardiac Rehabilitation (CR) is a recommendation in international clinical practice guidelines given its’ benefits, however use is suboptimal. The purpose of this position statement was to translate evidence on interventions that increase CR enrolment and adherence into implementable recommendations. Methods: The writing panel was constituted by representatives of societies internationally concerned with preventive cardiology, and included disciplines that would be implementing the recommendations. Patient partners served, as well as policy-makers. The statement was developed in accordance with AGREE II, among other guideline checklists. Recommendations were based on our update of the Cochrane review on interventions to promote patient utilization of CR. These were circulated to panel members, who were asked to rate each on a 7-point Likert scale in terms of scientific acceptability, actionability, and feasibility of assessment. A web call was convened to achieve consensus and confirm strength of the recommendations (based on GRADE). The draft underwent external review and public comment. Results: The 3 drafted recommendations were that to increase enrolment, healthcare providers, particularly nurses (strong), should promote CR to patients face-to-face (strong), and that to increase adherence part of CR could be delivered remotely (weak). Ratings for the 3 recommendations were 5.95±0.69 (mean ± standard deviation), 5.33±1.12 and 5.64±1.08, respectively. Conclusions: Interventions can significantly increase utilization of CR, and hence should be widely applied. We call upon cardiac care institutions to implement these strategies to augment CR utilization, and to ensure CR programs are adequately resourced to serve enrolling patients and support them to complete programs

    Pervasive gaps in Amazonian ecological research

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    Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio
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