737 research outputs found

    Catálogo Taxonômico da Fauna do Brasil: setting the baseline knowledge on the animal diversity in Brazil

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    The limited temporal completeness and taxonomic accuracy of species lists, made available in a traditional manner in scientific publications, has always represented a problem. These lists are invariably limited to a few taxonomic groups and do not represent up-to-date knowledge of all species and classifications. In this context, the Brazilian megadiverse fauna is no exception, and the Catálogo Taxonômico da Fauna do Brasil (CTFB) (http://fauna.jbrj.gov.br/), made public in 2015, represents a database on biodiversity anchored on a list of valid and expertly recognized scientific names of animals in Brazil. The CTFB is updated in near real time by a team of more than 800 specialists. By January 1, 2024, the CTFB compiled 133,691 nominal species, with 125,138 that were considered valid. Most of the valid species were arthropods (82.3%, with more than 102,000 species) and chordates (7.69%, with over 11,000 species). These taxa were followed by a cluster composed of Mollusca (3,567 species), Platyhelminthes (2,292 species), Annelida (1,833 species), and Nematoda (1,447 species). All remaining groups had less than 1,000 species reported in Brazil, with Cnidaria (831 species), Porifera (628 species), Rotifera (606 species), and Bryozoa (520 species) representing those with more than 500 species. Analysis of the CTFB database can facilitate and direct efforts towards the discovery of new species in Brazil, but it is also fundamental in providing the best available list of valid nominal species to users, including those in science, health, conservation efforts, and any initiative involving animals. The importance of the CTFB is evidenced by the elevated number of citations in the scientific literature in diverse areas of biology, law, anthropology, education, forensic science, and veterinary science, among others

    ALIMENTOS CONVENCIONAIS E ALTERNATIVOS PARA ABELHAS

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    Brazil possesss potential for attainment of great amounts of apicultural products, what it differentiates it of the too much countries that, normally, harvests an only time per year. However despite the diversity of the apicultural flora and the high existing food concentration in the rainy period, during the dry station, a scarcity of apicultural grass e occurs, consequently, of food for the bees being necessary a complementary feeding of this form assuring the productivity and the profits. The feeding of the bees of course is very selective, them is adapted in the adult phase to an feeding eliminates, however, these unbalanced fluids little is concentrated and its composition with predominance of sugars, thus needing complementing in the diet with a rich food in proteins as form is pólen.Dessa is necessary to know foods conventional and alternative for the period of between harvest diminishing the loss of the brief produção.Esta revision presents excellent aspects of the feeding of the bees relating its chemical composition, nutritional value and functional properties

    <b>Desempenho de leitões submetidos a diferentes níveis de substituição da proteína do farelo de soja pela proteína do ovo desidratado</b> - DOI: 10.4025/actascianimsci.v30i4.3746 <b>Performance of piglets submitted to different replacement levels of soybean meal protein by dehydrated egg protein</b> - DOI: 10.4025/actascianimsci.v30i4.3746

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    Objetivou-se determinar o ganho de peso, o consumo de ração e a conversão alimentar de suínos em fase inicial (15 a 30 kg de peso) alimentados com quatro diferentes níveis de substituição (0, 3, 6 e 9%) da proteína do farelo de soja pela proteína do ovo desidratado. Foram utilizados 32 suínos (16 machos castrados e 16 fêmeas) em um delineamento em blocos casualizados, com quatro tratamentos e quatro repetições cada, em que a unidade experimental foi composta por um macho e uma fêmea. Os tratamentos foram 0, 3, 6 e 9% de proteína do ovo desidratado em substituição à proteína do farelo de soja. Os dados obtidos foram submetidos à regressão linear para os níveis de 3, 6 e 9% de ovo desidratado, e o tratamento-testemunha (0%) foi comparado com os demais aplicando o teste Dunnet a 5% de probabilidade. Os níveis de substituição da proteína do farelo de soja pela proteína do ovo desidratado não influenciaram as variáveis de desempenho dos animais na fase inicial, até 9%. Entretanto, avaliando a relação custo-benefício, o tratamento-controle foi o mais rentável.<br>This study aimed to determine the average daily weight gain, daily feed intake and the feed conversion ratio of pigs in initial phase (15 to 30 kg of weight) fed with four different levels of substitution (0, 3, 6 and 9%) of soybean meal protein by dehydrated egg protein. Thirty-two pigs (16 castrated males and 16 females) were used in a completely randomized blocks statistical design, with four treatments and four repetitions each; the experimental unit was composed by a male and a female. The treatments were 0, 3, 6 and 9% of dehydrated egg protein in replacement of soybean meal protein. The data obtained were subjected to linear regression for the levels 3, 6 and 9% of dehydrated egg; the witness (0%) was compared with the other treatments applying Dunnett’s test at 5% probability. The replacement levels of soybean meal protein by dehydrated egg protein did not influence the performance variables of the animals in the initial phase, up to 9%. However, when evaluating the cost-benefit ratio, the control treatment was the most profitable one

    Desempenho de leitões submetidos a diferentes níveis de substituição da proteína do farelo de soja pela proteína do ovo desidratado = Performance of piglets submitted to different replacement levels of soybean meal protein by dehydrated egg protein

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    Objetivou-se determinar o ganho de peso, o consumo de ração e a conversão alimentar de suínos em fase inicial (15 a 30 kg de peso) alimentados com quatro diferentes níveis de substituição (0, 3, 6 e 9%) da proteína do farelo de soja pela proteína do ovo desidratado. Foram utilizados 32 suínos (16 machos castrados e 16 fêmeas) em um delineamento em blocos casualizados, com quatro tratamentos e quatro repetições cada, em que a unidade experimental foi composta por um macho e uma fêmea. Os tratamentos foram 0, 3, 6 e 9% de proteína do ovo desidratado em substituição à proteína do farelo de soja. Os dados obtidos foram submetidos à regressão linear para os níveis de 3, 6 e 9% de ovo desidratado, e o tratamento-testemunha (0%) foi comparado com os demais aplicando o teste Dunnet a 5% de probabilidade. Os níveis de substituição da proteína do farelo de sojapela proteína do ovo desidratado não influenciaram as variáveis de desempenho dos animais na fase inicial, até 9%. Entretanto, avaliando a relação custo-benefício, o tratamentocontrole foi o mais rentável.<br><br>This study aimed to determine the average daily weight gain, daily feed intake and the feed conversion ratio of pigs in initialphase (15 to 30 kg of weight) fed with four different levels of substitution (0, 3, 6 and 9%) of soybean meal protein by dehydrated egg protein. Thirty-two pigs (16 castrated males and 16 females) were used in a completely randomized blocks statistical design, with fourtreatments and four repetitions each; the experimental unit was composed by a male and a female. The treatments were 0, 3, 6 and 9% of dehydrated egg protein in replacement of soybean meal protein. The data obtained were subjected to linear regression for the levels 3,6 and 9% of dehydrated egg; the witness (0%) was compared with the other treatments applying Dunnett’s test at 5% probability. The replacement levels of soybean meal protein by dehydrated egg protein did not influence the performance variables of the animals in theinitial phase, up to 9%. However, when evaluating the cost-benefit ratio, the control treatment was the most profitable one

    Geoeconomic variations in epidemiology, ventilation management, and outcomes in invasively ventilated intensive care unit patients without acute respiratory distress syndrome: a pooled analysis of four observational studies

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    Background: Geoeconomic variations in epidemiology, the practice of ventilation, and outcome in invasively ventilated intensive care unit (ICU) patients without acute respiratory distress syndrome (ARDS) remain unexplored. In this analysis we aim to address these gaps using individual patient data of four large observational studies. Methods: In this pooled analysis we harmonised individual patient data from the ERICC, LUNG SAFE, PRoVENT, and PRoVENT-iMiC prospective observational studies, which were conducted from June, 2011, to December, 2018, in 534 ICUs in 54 countries. We used the 2016 World Bank classification to define two geoeconomic regions: middle-income countries (MICs) and high-income countries (HICs). ARDS was defined according to the Berlin criteria. Descriptive statistics were used to compare patients in MICs versus HICs. The primary outcome was the use of low tidal volume ventilation (LTVV) for the first 3 days of mechanical ventilation. Secondary outcomes were key ventilation parameters (tidal volume size, positive end-expiratory pressure, fraction of inspired oxygen, peak pressure, plateau pressure, driving pressure, and respiratory rate), patient characteristics, the risk for and actual development of acute respiratory distress syndrome after the first day of ventilation, duration of ventilation, ICU length of stay, and ICU mortality. Findings: Of the 7608 patients included in the original studies, this analysis included 3852 patients without ARDS, of whom 2345 were from MICs and 1507 were from HICs. Patients in MICs were younger, shorter and with a slightly lower body-mass index, more often had diabetes and active cancer, but less often chronic obstructive pulmonary disease and heart failure than patients from HICs. Sequential organ failure assessment scores were similar in MICs and HICs. Use of LTVV in MICs and HICs was comparable (42·4% vs 44·2%; absolute difference -1·69 [-9·58 to 6·11] p=0·67; data available in 3174 [82%] of 3852 patients). The median applied positive end expiratory pressure was lower in MICs than in HICs (5 [IQR 5-8] vs 6 [5-8] cm H2O; p=0·0011). ICU mortality was higher in MICs than in HICs (30·5% vs 19·9%; p=0·0004; adjusted effect 16·41% [95% CI 9·52-23·52]; p&lt;0·0001) and was inversely associated with gross domestic product (adjusted odds ratio for a US$10 000 increase per capita 0·80 [95% CI 0·75-0·86]; p&lt;0·0001). Interpretation: Despite similar disease severity and ventilation management, ICU mortality in patients without ARDS is higher in MICs than in HICs, with a strong association with country-level economic status

    Search for Z' bosons decaying to pairs of heavy Majorana neutrinos in proton-proton collisions at s\sqrt{s} = 13 TeV

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    International audienceA search for the production of pairs of heavy Majorana neutrinos (N_\ell) from the decays of Z' bosons is performed using the CMS detector at the LHC. The data were collected in proton-proton collisions at a center-of-mass energy of s\sqrt{s} = 13 TeV, with an integrated luminosity of 138 fb1^{-1}. The signature for the search is an excess in the invariant mass distribution of the final-state objects, two same-flavor leptons (e or μ\mu) and at least two jets. No significant excess of events beyond the expected background is observed. Upper limits at 95% confidence level are set on the product of the Z' production cross section and its branching fraction to a pair of N_\ell, as functions of N_\ell and Z' boson masses (mNm_{\mathrm{N}_\ell} and mZm_\mathrm{Z'}, respectively) for mZm_\mathrm{Z'} from 0.4 to 4.6 TeV and mNm_{\mathrm{N}_\ell} from 0.1 TeV to mZm_\mathrm{Z'}/2. In the theoretical framework of a left-right symmetric model, exclusion bounds in the mNm_{\mathrm{N}_\ell}-mZm_\mathrm{Z'} plane are presented in both the electron and muon channels. The observed upper limit on mZm_\mathrm{Z'} reaches up to 4.42 TeV. These are the most restrictive limits to date on the mass of N_\ell as a function of the Z' boson mass

    Search for resonances in events with photon and jet final states in proton-proton collisions at s\sqrt{s}= 13 TeV

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    International audienceA search for resonances in events with the γ\gamma+jet final state has been performed using proton-proton collision data collected at s\sqrt{s}= 13 TeV by the CMS experiment at the LHC. The total data analyzed correspond to an integrated luminosity of 138 fb1^{-1}. Models of excited quarks and quantum black holes are considered. The invariant mass spectrum of the γ\gamma+jet system is examined for the presence of resonances over the standard model continuum background. The data exhibit no statistically significant deviations from the expected standard model background. Exclusion limits at 95% confidence level on the resonance mass and other parameters are set. Excited light-flavor quarks (excited bottom quarks) are excluded up to a mass of 6.0 (3.8) TeV. Quantum black hole production is excluded for masses up to 7.5 (5.2) TeV in the Arkani-Hamed-Dimopoulos-Dvali (Randall-Sundrum) model. These lower mass bounds are the most stringent to date among those obtained in the γ\gamma+jet final state

    Search for top squark pair production in a final state with at least one hadronically decaying tau lepton in proton-proton collisions at s \sqrt{s} = 13 TeV

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    A search for pair production of the supersymmetric partner of the top quark, the top squark, in proton-proton collisions at s \sqrt{s} = 13 TeV is presented in final states containing at least one hadronically decaying tau lepton and large missing transverse momentum. This final state is highly sensitive to scenarios of supersymmetry in which the decay of the top squark to tau leptons is enhanced. The search uses a data sample corresponding to an integrated luminosity of 138 fb1^{−1}, which was recorded with the CMS detector during 2016–2018. No significant excess is observed with respect to the standard model predictions. Exclusion limits at 95% confidence level on the masses of the top squark and the lightest neutralino are presented under the assumptions of simplified models. The results probe top squark masses up to 1150 GeV for a nearly massless neutralino. This search covers a relatively less explored parameter space in the context of supersymmetry, and the exclusion limit is the most stringent to date for the model considered here.[graphic not available: see fulltext
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