99 research outputs found
Hplc-dad-esi/ms Identification And Quantification Of Phenolic Compounds In Ilex Paraguariensis Beverages And On-line Evaluation Of Individual Antioxidant Activity.
ChimarrĂŁo and tererĂȘ are matĂ© (dried, toasted and milled Ilex paraguariensis leaves and stemlets) beverages widely consumed in South America. This paper describes the application of HPLC-DAD-ESI/MS method for the identification and quantification of caffeoylquinic acids (CQA), flavonol glycosides and purine alkaloids in these beverages. The beverage samples were prepared from commercial lots of matĂ© from Southern Brazil. The caffeoylquinic acids, 4,5-diCQA, 3-CQA, 5-CQA, and 4-CQA were the major compounds, having 238-289, 153-242, 183-263, and 123-188 ÎŒg/mL, respectively, for chimarrĂŁo and 206-265, 122-218, 164-209, 103-169 ÎŒg/mL, respectively, for tererĂȘ. Caffeine also had high amounts while glycosides of quercetin and kaempferol were found at much lower levels. The individual antioxidant activity was also determined by an on-line system that measured their ABTSâą+ radical scavenging activity, showing that the antioxidant capacity was not proportional to the concentrations of the phenolic compounds. 3-CQA, quercetina-3-O-ramnosylglucoside, and quercetina-3-O-glucoside were the major contributors to the antioxidant capacity, although the quercetin glycosides had concentrations less than 10 times that of 3-CQA.183859-7
The Lancet Oral Health Series â implications for oral and dental research
No abstract available
Federated and distributed learning applications for electronic health records and structured medical data: A scoping review
Federated learning (FL) has gained popularity in clinical research in recent
years to facilitate privacy-preserving collaboration. Structured data, one of
the most prevalent forms of clinical data, has experienced significant growth
in volume concurrently, notably with the widespread adoption of electronic
health records in clinical practice. This review examines FL applications on
structured medical data, identifies contemporary limitations and discusses
potential innovations. We searched five databases, SCOPUS, MEDLINE, Web of
Science, Embase, and CINAHL, to identify articles that applied FL to structured
medical data and reported results following the PRISMA guidelines. Each
selected publication was evaluated from three primary perspectives, including
data quality, modeling strategies, and FL frameworks. Out of the 1160 papers
screened, 34 met the inclusion criteria, with each article consisting of one or
more studies that used FL to handle structured clinical/medical data. Of these,
24 utilized data acquired from electronic health records, with clinical
predictions and association studies being the most common clinical research
tasks that FL was applied to. Only one article exclusively explored the
vertical FL setting, while the remaining 33 explored the horizontal FL setting,
with only 14 discussing comparisons between single-site (local) and FL (global)
analysis. The existing FL applications on structured medical data lack
sufficient evaluations of clinically meaningful benefits, particularly when
compared to single-site analyses. Therefore, it is crucial for future FL
applications to prioritize clinical motivations and develop designs and
methodologies that can effectively support and aid clinical practice and
research
Nachrichten aus der Bruder-Gemeine, 1842, no. 02
The Moravian Church's monthly journal of its worldwide activities, including in Labrador, published from 1819-94
Towards an applied metaecology
The complexity of ecological systems is a major challenge for practitioners and decision-makers who work to avoid, mitigate and manage environmental change. Here, we illustrate how metaecology - the study of spatial interdependencies among ecological systems through fluxes of organisms, energy, and matter - can enhance understanding and improve managing environmental change at multiple spatial scales. We present several case studies illustrating how the framework has leveraged decision-making in conservation, restoration and risk management. Nevertheless, an explicit incorporation of metaecology is still uncommon in the applied ecology literature, and in action guidelines addressing environmental change. This is unfortunate because the many facets of environmental change can be framed as modifying spatial context, connectedness and dominant regulating processes - the defining features of metaecological systems. Narrowing the gap between theory and practice will require incorporating system-specific realism in otherwise predominantly conceptual studies, as well as deliberately studying scenarios of environmental change. (C) 2019 Associacao Brasileira de Ciencia Ecologica e Conservacao. Published by Elsevier Editora Ltda.Peer reviewe
Towards an applied metaecology
The complexity of ecological systems is a major challenge for practitioners and decision-makers who work to avoid, mitigate and manage environmental change. Here, we illustrate how metaecology â the study of spatial interdependencies among ecological systems through fluxes of organisms, energy, and matter â can enhance understanding and improve managing environmental change at multiple spatial scales. We present several case studies illustrating how the framework has leveraged decision-making in conservation, restoration and risk management. Nevertheless, an explicit incorporation of metaecology is still uncommon in the applied ecology literature, and in action guidelines addressing environmental change. This is unfortunate because the many facets of environmental change can be framed as modifying spatial context, connectedness and dominant regulating processes - the defining features of metaecological systems. Narrowing the gap between theory and practice will require incorporating system-specific realism in otherwise predominantly conceptual studies, as well as deliberately studying scenarios of environmental change.We thank FAPESP (grants 2014/10470-7 to AM, 2013/04585-3 to DL, 2013/50424-1 to TS and 2015/18790-3to LS), CNPq (Productivity Fellowships 301656/2011-8 to JAFDF,308205/2014-6 to RP, 306183/2014-5 to PIP and 307689/2014-0 to VDP), the National Science Foundation (DEB 1645137 toJGH), the Natural Sciences and Engineering Council of Canada (SJL,PPN), and the Academy of Finland (grants 257686 and 292765 toMC) for support. This work contributes to the Labex OT-Med (no.ANR-11-LABX-0061), funded by the French government throughthe A*MIDEX project (no. ANR-11-IDEX-0001-02)
Infinite-Duration Poorman-Bidding Games
In two-player games on graphs, the players move a token through a graph to produce an infinite path, which determines the winner or payoff of the game. Such games are central in formal verification since they model the interaction between a non-terminating system and its environment. We study bidding games in which the players bid for the right to move the token. Two bidding rules have been defined. In Richman bidding, in each round, the players simultaneously submit bids, and the higher bidder moves the token and pays the other player. Poorman bidding is similar except that the winner of the bidding pays the âbankâ rather than the other player. While poorman reachability games have been studied before, we present, for the first time, results on infinite-duration poorman games. A central quantity in these games is the ratio between the two playersâ initial budgets. The questions we study concern a necessary and sufficient ratio with which a player can achieve a goal. For reachability objectives, such threshold ratios are known to exist for both bidding rules. We show that the properties of poorman reachability games extend to complex qualitative objectives such as parity, similarly to the Richman case. Our most interesting results concern quantitative poorman games, namely poorman mean-payoff games, where we construct optimal strategies depending on the initial ratio, by showing a connection with random-turn based games. The connection in itself is interesting, because it does not hold for reachability poorman games. We also solve the complexity problems that arise in poorman bidding games
Taxa de multiplicação e efeito residual de diferentes fontes de citocinina no cultivo in vitro de Hancornia speciosa Gomes
Milk quality of Jersey cows kept on winter pasture supplemented or not with concentrate
- âŠ