201 research outputs found
Food Value Of Mealworm Grown On Acrocomia Aculeata Pulp Flour
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Insects have played an important role as human food throughout history, especially in Africa, Asia and Latin America. A good example of edible insects is the mealworm, Tenebrio molitor Linnaeus, 1758 (Coleoptera, Tenebrionidae), which are eaten in Africa, Asia, the Americas and Australia. This species is easily bred in captivity, requiring simple management. The bocaiuva (Acrocomia aculeata (Jacq.) Lodd) is an abundant palm tree found in the Brazilian Cerrado, providing fruits with high nutritional value. The aim of this work was to determine the chemical composition of T. molitor grown in different artificial diets with bocaiuva pulp flour. The nutritional composition, fatty acid composition, antioxidant activity, trypsin activity and anti-nutritional factors of larvae were analyzed. The results showed that mealworms grown on artificial diet with bocaiuva are a good source of protein (44.83%) and lipid (40.45%), with significant levels of unsaturated fatty acids (65.99%), antioxidant activity (4.5 uM Trolox/g of oil extracted from larvae) and absence of anti-nutritional factors. This study indicates a new source of biomass for growing mealworms and shows that it is possible to breed mealworms in artificial diet with bocaiuva flour without compromising the nutritional quality of the larvae. © 2016 Alves et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.113CAPES, Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES
Cystic fibrosis – Comparison between patients in paediatric and adult age
AbstractCystic fibrosis (CF) is the most common autosomal recessive disease in Caucasians. Although most cases are diagnosed in childhood, diagnosis in adults is apparently increasing.ObjectiveEvaluate the adult population with CF, comparing patients who were diagnosed before and after 18 years of age.MethodsRetrospective analysis of patients followed in three main medical centres in Portugal in 2012. Comparison of two groups: G1 – patients diagnosed at <18 years and G2 – patients diagnosed at ≥18 years.Results89 adults were identified: 61.8% in G1, 38.2% in G2. Gender distribution was similar in both groups. Average age in G2 was higher (38.3±8.4 vs. 26.8±6.1 years, p<0.001). Respiratory symptoms most frequently led to CF diagnosis in all patients, mainly in adulthood. There was a greater percentage of patients homozygous for the mutation delF508 in G1 (43.6 vs. 8.8%, p=0.02). Respiratory and pancreatic function, and body mass index (BMI) showed a higher severity in G1 (G1 vs. G2: FEV1: 54.6±27.3 vs. 29.9±64.6%, p=0.177; pancreatic insufficiency 72.7 vs. 26.5%, p<0.001; BMI 20.2±3.4 vs. 22.2±4.8, p=0.018). Pseudomonas aeruginosa and methicillin-sensitive Staphylococcus aureus were the most frequently isolated microorganisms. Lung transplantation rate was higher in G2 (20.6 vs. 10.9%, p=0.231) while mortality rate was higher in G1 (0 vs. 3.6%, p=0.261). Hospital admission rate was higher in G1 as well as mortality rate.ConclusionThe results suggest that patients with CF diagnosed in childhood have characteristics that distinguish them from those diagnosed in adulthood, and these differences may have implications for diagnosis, prognosis and life expectancy
Dielectric characterization of the BiFe0.5Cr0.5O3 ceramics
Dielectric properties of the BiFe0.5Cr0.5O3 ceramics synthesized under high pressure were investigated in
a broad frequency range (20 Hz – 1 GHz) between 200 and 500 K. It was revealed that the ceramics exhibit
electrical conductivity above 300 K. Below 300 K, a dielectric dispersion caused by ferroelectric domains
was observed. It was found that the conductivity follows the Almond–West law, which allowed us to determine a DC contribution (σDC). From the σDC values obtained at different temperatures, the activation energy
(EA = 0.302 ± 0.006 eV) was calculated using the Arrhenius law.publishe
A lapa do Bugio
A jazida pré-histórica do Bugio constitui uma das mais importantes grutas
sepulcrais da faixa estremenha. Encontrava-se intacta à data das primeiras
escavações, realizadas em 1957 e 1958. Vicissitudes várias que motivaram a
dissolução da primeira equipa e favoreceram diversas depredações, entretanto
realizadas, impediram que, antes do recomeço dos trabalhos, em 1966, mesmo
dos materiais recuperados, se pudessem extrair todas as informações neles
potencialmente contidas. Foi possível, a partir do estudo exaustivo do espólio conservado no Museu
de Sesimbra e no recolhido nas escavações de 1966, estabelecer a seguinte
sucessão cronológica-cultural:
Primeira ocupação - corresponde talvez à ocupação mais importante,
integrável no Neolítico recente-final estremenho. Estreitas analogias com o
"horizonte dolménico" identificado na vizinha Lapa do Fumo e datado pelo
rádio-carbono de 3090 ± 160 a. C. (SERRÃO,1978). A datação realizada no
Bugio deu 2800 ± 45 a.C.
Segunda ocupação- corresponde muito provavelmente a momento inicial
(ou pleno) do Calcolítico, definido pela presença de raros produtos, como o
recipiente de osso recolhido na sep. 7 e "ídolos" de calcário, de osso e marfim.
Terceira ocupação - Calcolítico final, campaniforme - representada pelos
Grupos de Palmela e Inciso. Trata-se da ocupação menos importante,
excessivamente valorizada em trabalhos anteriores, talvez pela grande dispersão
de fragmentos cerâmicos que não ultrapassam, contudo, nove recipientes (alguns
deles representados por apenas um fragmento): taças em calote - (I), de bordo
espessado - (I), de tipo Palmela - (I), caçoilas acampanadas - (2), e vasos
campaniformes - (2), além de dois recipientes de tipologia mal definida.Le gisement préhistorique de Bugio est l 'une des plus importantes grottes
sépulcrales du littoral de l'Estrémadure. Elle a été trouvée intacte lors des
premières fouilles, réalisées en 1957 et 1958. Diverses vicissitudes, qui devaient
aboutir à la dissolution de la première équipe de fouilleurs et favoriser le pillage
du site, empêchèrent la difusion de toute information avant la reprise des travaux
en 1966, même sur le matériel récupéré.
A partir de l' étude exhaustive du mobilier conservé au Musée de Sesimbra
et de celui qui a été découvert en 1966, on a pu établir les niveaux chronologiques
suivants: Première occupation, peut-être la plus importante, s'intégrant dans le
Néolithique récent et final de l'Estrémadure, présentant d' étroites analogies avec
"l'horizon dolménique" identifié sur le site voisin de Lapa do Fumo, daté de
3090 ± 160 a.C. par radio-carbone (SERRÃO, 1978). La datation obtenue à
Bugio est de 2800 ± 45 a.C..
Seconde occupation, correspondant très probablement à la phase initiale ou
médiane du Chalcolithique, définie par de rares productions, comme le récipient
en os recueilli dans la sépulture 7 et les "idoles" en calcaire, en os et en ivoire.
Troisième occupation (Chalcolithique final, Campaniforme) représentée
par les Groupes de Palmela et incisé. Il s'agit d'une occupation moins importante,
surévaluée dans les travaux antérieurs, peut-être en raison de la grande dispersion
des fragments de céramiques qui ne correspondaient, cependant, qu'à neuf
récipients: coupes en calotte (1 ), coupes au bord épais (1), coupes de type de
Palmela (1), casseroles en forme de cloche (2), vases campaniformes (2) et deux
récipients à la typologie mal définie
Anomalous lattice expansion of RuSr2Eu1.5Ce0.5Cu2O10(Ru-1222) magneto superconductor: A low temperature X-ray diffraction study
This is the first report of the observation of the onset of excess volume and
also of the strain along the a-axis near the magnetic ordering temperature in
Ru-1222 superconductor, and indicates a coupling between the lattice and the
magnetism in this system. Magnetization, magneto transport and thermoelectric
power measurements being carried out on the same sample are also reported.Comment: 15 Pages Text Plus Figs. Physica C (2006) accepte
Decay of massive scalar field in a Schwarzschild background
The decay of massive scalar field in the Schwarzschild black hole background
is investigated here by consideration its quasinormal spectrum. It has been
proved that the so-called modes, which are arbitrary long
living (purely real) modes, can exist only if the effective potential is not
zero at least at one of the boundaries of the -region. We have observed that
the quasinormal spectrum exists for all field masses and proved both
analytically and numerically that when the real part of the
frequencies approaches the same asymptotical value () as in the
case of the massless field.Comment: 8 pages, 3 figures, Physics Letters B, at pres
Composition-, temperature- and pressure-induced transitions between high-pressure stabilized perovskite phases of the (1-x)BiFe0.5Sc0.5O3 - xLaFe0.5Sc0.5O3 series
Crystal structures of the high-pressure synthesized perovskite phases of the (1-x)BiFe0.5Sc0.5O3-xLaFe0.5Sc0.5O3 (0 = x ≤ 1) system and their temperature and pressure behaviours were studied using laboratory and synchrotron X-ray diffractions as well as neutron diffraction. At room temperature, the as-prepared phases with x ≤ 0.05 have an antipolar structure with the Pnma symmetry and with the √2ap × 4ap × 2√2ap superstructure (where ap is the pseudocubic perovskite unit-cell parameter). An incommensurately modulated phase with the Imma(00γ)s00 superspace group is observed for 0.10 = x ≤ 0.33, while a non-polar Pnma phase (√2ap × 2ap × √2ap) is stable when x ≥ 0.34. The antipolar Pnma phase in the as-prepared samples with composition corresponding to x = 0 transforms into the polar Ima2 one via irreversible annealing-caused transformation accompanied by a formation of a high-temperature intermediate polar R3c polymorph, while the antipolar Pnma phase in samples with x = 0.05 is stable until the decomposition temperature. In the solid solutions with 0.10 = x ≤ 0.33, increasing temperature was found to result in a reversible transformation of the Imma(00γ)s00 phase into a non-polar Pnma one. The transition temperature decreases with increasing x. A hydrostatic pressure of few GPa was also shown to induce a reversible Imma(00γ)s00 → Pnma transformation.publishe
A database of functional traits for spiders from native forests of the Iberian Peninsula and Macaronesia
Background: There is an increasing demand for databases including species trait information for biodiversity and community ecology studies. The existence of trait databases is useful for comparative studies within taxa or geographical regions, but there is low availability of databases for certain organisms. Here we present an open access functional trait database for spiders from Macaronesia and the Iberian Peninsula, recording several morphological and ecological traits related to the species life histories, microhabitat and trophic preferences. New information We present a database that includes 12 biological traits for 506 spider species present in natural forests of the Iberian Peninsula (Spain) and three Macaronesian archipelagoes (Azores, Madeira and Canary Islands). The functional trait database consists of two sections: 1. individual-level data for six morphological traits (total body size, prosoma length, prosoma width, prosoma height, tibia I length and fang length), based on direct measurements of 2844 specimens of all spider species; and 2. species-level aggregate data for 12 traits (same 6 morphological traits as in the previous section plus dispersal ability, vertical stratification, circadian activity, foraging strategy, trophic specialization and colonization status), based on either the average of the direct measurements or bibliographic searches. This functional trait database will serve as a data standard for currently ongoing analyses that require trait and functional diversity statistics
The Azorean Biodiversity Portal: an internet database for regional biodiversity outreach
Copyright © 2010 The Natural History Museum.There is a growing interest in academia to provide biodiversity data to both the scientific community and the public. We present an internet database of the terrestrial lichens, bryophytes, vascular plants, molluscs, arthropods, vertebrates and coastal invertebrates of the Azores archipelago (Portugal, North Atlantic): the Azorean Biodiversity Portal (ABP, http://www.azoresbioportal.angra.uac.pt/). This is a unique resource for fundamental research in systematics, biodiversity, education and conservation management. The ABP was based on a regional species database (ATLANTIS), comprised of grid-based spatial incidence information for c. 5000 species. Most of the data rely on a comprehensive literature survey (dating back to the 19th century) as well as unpublished records from recent field surveys in the Azores. The ABP disseminates the ATLANTIS database to the public, allowing universal, unrestricted access to much of its data. Complementarily, the ABP includes additional information of interest to the general public (e.g. literature on Macaronesian biodiversity) together with images from collections and/or live specimens for many species. In this contribution we explain the implementation of a regional biodiversity database, its architecture, achievements and outcomes, strengths and limitations; we further include a number of suggestions in order to implement similar initiatives
On the dispersion of solid particles in a liquid agitated by a bubble swarm
This article deals with the dispersion of solid particles in a liquid agitated by a homogeneous swarm of bubbles. The scale of interest lies between the plant scale (of the order of the tank) and the microscale (less than the bubble diameter). The strategy consists in simulating both the twophase flow of deforming bubbles and the motion of solid particles. The evolution of the spatial distribution of particles together with the encounter and entrainment phenomena is studied as a function of the void fraction and the relative size and mass of particles. The influence of the shape of the bubble and of the model of forces that govern the motion of particles is also considered
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