7,651 research outputs found
Effects of Communication Media Choice on the Quality and Efficacy of Emergency Calls Assisted by a Mobile Nursing Protocol Tool:
The transition from paper to electronic-based records in the healthcare industry has posed several challenges to conventional medical practices. The introduction of technology in day-to-day medical and nursing practices deserves careful consideration. In this work, we report the results of a controlled experiment to compare nurses' consultation in emergency calls in six different conditions. We studied the effect that the type of communication media (face-to-face, telephone, videoconference) and type of nursing protocol media (paper-based, electronic-based) can have upon consultation time, mistakes made, pauses during consultation, eye contact, and efficacy of the consultation. We found that the type of communication media has an effect on consultation time; on average, fewer mistakes were made during telephone-based consultations; for eye contact, there were significantly fewer eye contacts during face-to-face than during videoconference consultations; finally, the type of communication media or protocol media did not have any effect in the efficacy of the consultation
Evolution along the sequence of S0 Hubble types induced by dry minor mergers. II - Bulge-disk coupling in the photometric relations through merger-induced internal secular evolution
Galaxy mergers are considered as questionable mechanisms for the evolution of
lenticular galaxies (S0's), on the basis that even minor ones induce structural
changes that are difficult to reconcile with the strong bulge-disk coupling
observed in the photometric scaling relations of S0's. We check if the
evolution induced onto S0's by dry intermediate and minor mergers can reproduce
their photometric scaling relations, analysing the bulge-disk decompositions of
the merger simulations presented in Eliche-Moral et al. (2012). The mergers
induce an evolution in the photometric planes compatible with the data of S0's,
even in those ones indicating a strong bulge-disk coupling. The mergers drive
the formation of the observed photometric relation in some cases, whereas they
induce a slight dispersion compatible with data in others. Therefore, this
evolutionary mechanism tends to preserve these scaling relations. In those
photometric planes where the morphological types segregate, the mergers always
induce evolution towards the region populated by S0's. The structural coupling
of the bulge and the disk is preserved or reinforced because the mergers
trigger internal secular processes in the primary disk that induce significant
bulge growth, even although these models do not induce bars. Intermediate and
minor mergers can thus be considered as plausible mechanisms for the evolution
of S0's attending to their photometric scaling relations, as they can preserve
and even strengthen any pre-existing structural bulge-disk coupling, triggering
significant internal secular evolution (even in the absence of bars or
dissipational effects). This means that it may be difficult to isolate the
effects of pure internal secular evolution from those of the merger-driven one
in present-day early-type disks (abridged).Comment: Accepted for publication in Astronomy & Astrophysics, 13 pages, 8
figures. Definitive version after proofs. Added references and corrected
typo
A comparative study of experimental configurations in synchrotron pair distribution function
The identification and quantification of amorphous components and nanocrystalline phases
with very small crystal sizes, smaller than ~3 nm, within samples containing crystalline phases is
very challenging. However, this is important as there are several types of systems that contain these
matrices: building materials, glass-ceramics, some alloys, etc. The total scattering synchrotron pair
distribution function (PDF) can be used to characterize the local atomic order of the nanocrystalline
components and to carry out quantitative analyses in complex mixtures. Although the resolution in
momentum transfer space has been widely discussed, the resolution in the interatomic distance space
has not been discussed to the best of our knowledge. Here, we report synchrotron PDF data collected at
three beamlines in different experimental configurations and X-ray detectors. We not only discuss the
effect of the resolution in Q-space, Qmax ins of the recorded data and Qmax of the processed data, but we
also discuss the resolution in the interatomic distance (real) space. A thorough study of single-phase
crystalline nickel used as standard was carried out. Then, selected cement-related samples including
anhydrous tricalcium and dicalcium silicates, and pastes derived from the hydration of tricalcium
silicate and ye’elimite with bassanite were analyzed.This work is part of the PhD of Mr. Jesus D. Zea-Garcia. This work was supported by Spanish MINECO and FEDER [BIA2017-82391-R research project and I3 [IEDI-2016-0079] program]
MANEJO FLORESTAL NO BAIXO AMAZONAS
Em função da política energética nacional adotada, a Mineração Rio do Norte (MRN), através da Florestas Rio Doce S.A. (FRDSA), desenvolve pesquisas na área florestal com o objetivo de obter um sistema silvicultural eficiente para substituir o uso do petróleo (óleo bruto) na secagem da bauxita. Diante destas condições e reconhecendo o potencial florestal da região, foi instalado um estudo sobre manejo florestal sustentado em 1985, com o objetivo de produzir lenha e madeira para serraria em condições auto-sustentada. Neste ensaio são testados diferentes níveis de exploração florestal, e este artigo relata os resultados obtidos nas atividades de exploração inicial e os incrementos em área basal (m2/ha), número de árvores (N/ha) e número de espécies (S) em quatro anos de acompanhamento (1985-1989)
INDEX SEMINUM - RESERVA FLORESTAL DE LINHARES ESPÍRITO SANTO - BRASIL
Objetiva o fomento e o intercâmbio de sementes florestais e é apresentada uma relação das espécies que ocorrem na Reserva Florestal de Unhares, localizada no norte do estado do Espírito Santo
MANEJO FLORESTAL EM FLORESTA SECUNDÁRIA DE TRANSIÇÃO
Como parte do programa de pesquisada empresa, envolvendo sistemas silviculturais, este projeto foi instalado em 1986para conhecer a produção de uma floresta tropical secundária de transição. O ensaio foi instalado no município de Rio Vermelho, no estado de Minas Gerais, em uma área pertencente à Florestas Rio Doce S.A. O objetivo é identificar um sistema e o ciclo de interferências para atingir uma produção auto-sustentada de lenha e madeira para serraria. Quatro tratamentos foram testados com quatro repetições em uma floresta de formação predominantemente secundária (floresta secundária com cerca de 15 anos). Cada tratamento consistiu em um grau diferente de utilização florestal, que variou do corte raso até cortes seletivos. Na testemunha não foi realizado nenhum corte e um inventário florestal foi realizado antes e depois da exploração, em 1988 e 1990, em todas as parcelas. Em cada parcela experimental, todas as árvores com CAP acima de 15,7 cm foram mensuradas. Mudas da regeneração natural foram quantificadas em cada parcela. Todas as árvores foram identificadas pelo nome popular e científico. Nenhum dos tratamentos resultou em madeira para serraria, porém, acredita-se que na próxima intervenção haverá produção para esta finalidade. O volume do tratamento mais produtivo foi de 191,08 st/ha e, após quatro anos de observação, o número de árvores (N/ha), área basal (m2/ha) e número de espécies (S) foram analisados estaticamente
New results on lower bounds for the number of k-facets
In this paper we present three different results dealing with the number of (≤ k)- facets of a set of points: (i) We give structural properties of sets in the plane that achieve the optimal lower bound 3_k+2 2 _ of (≤ k)-edges for a fixed k ≤ [n/3 ]− 1; (ii) We show that the new lower bound 3((k+2) 2 ) + 3((k−(n/ 3)+2) 2 ) for the number of (≤ k)-edges of a planar point set is optimal in the range [n/3] ≤ k ≤ [5n/12] − 1; (iii) We show that for k < n/4 the number of (≤ k)-facets of a set of n points in R3 in general position is at least 4((k+3 )3 ), and that this bound is tight in that range
Algal nutraceuticals: a perspective on metabolic diversity, current food applications, and prospects in the field of metabolomics
The current consumers’ demand for food naturalness is urging the search for new functional foods of natural
origin with enhanced health-promoting properties. In this sense, algae constitute an underexplored biological
source of nutraceuticals that can be used to fortify food products. Both marine macroalgae (or seaweeds) and
microalgae exhibit a myriad of chemical constituents with associated features as a result of their primary and
secondary metabolism. Thus, primary metabolites, especially polysaccharides and phycobiliproteins, present
interesting properties to improve the rheological and nutritional properties of food matrices, whereas secondary
metabolites, such as polyphenols and xanthophylls, may provide interesting bioactivities, including antioxidant
or cytotoxic effects. Due to the interest in algae as a source of nutraceuticals by the food and related industries,
novel strategies should be undertaken to add value to their derived functional components. As a result,
metabolomics is considered a high throughput technology to get insight into the full metabolic profile of biological
samples, and it opens a wide perspective in the study of algae metabolism, whose knowledge is still little
explored. This review focuses on algae metabolism and its applications in the food industry, paying attention to
the promising metabolomic approaches to be developed aiming at the functional characterization of these
organisms.The research leading to these results was supported by the European
Union through the “NextGenerationEU” program supporting the
“Margarita Salas” grant awarded to P. Garcia-Perez, by Xunta de Galicia
for supporting the program EXCELENCIA-ED431F 2020/12, the postdoctoral
grant of L. Cassani (ED481B-2021/152), and the pre-doctoral
grant of P. Garcia-Oliveira (ED481A-2019/295) and by MICINN supporting
the Ram´on y Cajal grant for M.A. Prieto (RYC-2017-22891) and
J. Xiao (RYC-2020-030365-I). Authors are grateful to Bio Based Industries
Joint Undertaking (JU) under grant agreement No 888003
UP4HEALTH Project (H2020-BBI-JTI-2019). The JU receives support
from the European Union’s Horizon 2020 research and innovation
program and the Bio Based Industries Consortium. This work has also
received funding from the Argentinean Agency for the Scientific and
Technological Promotion (ANPCyT, Argentina) under the project PICT
(2020)/1602.info:eu-repo/semantics/publishedVersio
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