1,782 research outputs found
Queso fresco Alentejano de cabra con aceite esencial de orégano
El consumo de queso ha aumentado en los últimos años debido a la gran cantidad de tipos de quesos que podemos
encontrar en el mercado, gracias a las diferentes clases de leche y de tecnologías existentes (Gouvea et al., 2017). El queso
fresco es muy apreciado por su valor nutricional y su sabor agradable, considerándose un alimento saludable por su bajo
contenido en sal (Gouvea et al. 2017; Lourenço et al., 2017). Este tipo de queso con bajo contenido en sal, pH próximo a la
neutralidad y alta actividad de agua, favorece el crecimiento de microorganismos, acortando la vida útil del producto
(Gadotti et al., 2014).
Una buena alternativa para evitar la proliferación de microorganismos en los alimentos es el uso de aceites esenciales
extraídos de plantas aromáticas y medicinales (Laranjo et al. 2017). En el aceite esencial de orégano uno de sus compuestos
principales es el carvacrol, que es un compuesto fenólico con capacidad antimicrobiana (Burt, 2004; Laranjo et al., 2017).
Existe un gran número de estudios in vitro que han determinado la concentración mínima inhibitoria del aceite esencial de
orégano en torno a 0,28 mg.ml-1 – 1,25 mg.ml-1 (Burt, 2004; Laranjo et al., 2017).
El objetivo de este estudio fue la comparación de queso fresco de cabra, natural, y queso fresco de cabra, con aceite
esencial de orégano
STERapp: semiautomatic software for stereological analysis. Application in the estimation of fish fecundity
Postprin
Endoscopical and pathological dissociation in severe colitis induced by immune-checkpoint inhibitors
Checkpoint inhibitors have improved the survival of patients with advanced tumors and show
a manageable toxicity profile. However, auto-immune colitis remains a relevant side effect, and combinations of anti-PD1/PDL1 and anti-CTLA-4 increase its incidence and severity. Here, we report the case of
a 50-year-old patient diagnosed with stage IV cervical cancer that relapsed following radical surgery,
external radiation/brachytherapy and standard chemotherapy. She was subsequently treated with
Nivolumab and Ipilimumab combination and developed grade 2 colitis presenting a dissociation
between endoscopic and pathological findings. At cycle 10 the patient reported grade 3 diarrhea and
abdominal discomfort, without blood or mucus in the stools. Immunotherapy was withheld and
a colonoscopy was performed, showing normal mucosa in the entire colon. Puzzlingly, histologic
evaluation of randomly sampled mucosal biopsy of the distal colon showed an intense intraepithelial
lymphocyte infiltration with crypt loss and some regenerating crypts with a few apoptotic bodies set in
a chronically inflamed lamina propria, consistent with the microscopic diagnosis of colitis. Treatment
with methylprednisolone 2 mg/kg was initiated which led to a decrease in the number of stools to grade
1. Additional investigations to exclude other causes of diarrhea rendered negative results. The patient
experienced a major partial response and, following the resolution of diarrhea, she was re-challenged
again with immunotherapy, with the reappearance of grade 2 diarrhea, leading to permanent immunotherapy interruption. We conclude and propose that performing random colonic biopsies should be
considered in cases of immune checkpoint-associated unexplained diarrhea, even when colonoscopy
shows macroscopically normal colonic mucosa inflammatory lesions
Avaliação do impacte de fogos florestais nos recursos hídricos subterrâneos
O presente trabalho corresponde ao relatório final do Projecto POCI/AGR/59180/2004
“Avaliação do Impacte de Fogos Florestais nos Recursos Hídricos Subterrâneos” e nele se
avalia o impacto dos fogos no meio hídrico superficial e subterrâneo, considerando as
alterações quantitativas no meio hídrico – escoamento superficial, recarga, evapotranspiração –
e de qualidade. Na avaliação da alteração da qualidade das águas consideraram-se como
fontes de contaminação os solos ardidos e as cinzas da matéria vegetal ardida, cuja
caracterização foi realizada em ensaios de queima e de lixiviação. Os poluentes avaliados
foram os elementos inorgânicos, os metais pesados e os hidrocarbonetos. Os trabalhos de
campo visaram a caracterização das unidades florísticas das áreas ardidas, recolha de
amostras para os ensaios de queima e lixiviação assim como a amostragem das águas
superficiais e subterrâneas para a avaliação das alterações na sua qualidade e a evolução da poluição ao longo do tempo.Fundação para a Ciência e a Tecnologi
Framing the concept of satellite remote sensing essential biodiversity variables: challenges and future directions
Although satellite-based variables have for long been expected to be key components to a unified and global biodiversity monitoring strategy, a definitive and agreed list of these variables still remains elusive. The growth of interest in biodiversity variables observable from space has been partly underpinned by the development of the essential biodiversity variable (EBV) framework by the Group on Earth Observations – Biodiversity Observation Network, which itself was guided by the process of identifying essential climate variables. This contribution aims to advance the development of a global biodiversity monitoring strategy by updating the previously published definition of EBV, providing a definition of satellite remote sensing (SRS) EBVs and introducing a set of principles that are believed to be necessary if ecologists and space agencies are to agree on a list of EBVs that can be routinely monitored from space. Progress toward the identification of SRS-EBVs will require a clear understanding of what makes a biodiversity variable essential, as well as agreement on who the users of the SRS-EBVs are. Technological and algorithmic developments are rapidly expanding the set of opportunities for SRS in monitoring biodiversity, and so the list of SRS-EBVs is likely to evolve over time. This means that a clear and common platform for data providers, ecologists, environmental managers, policy makers and remote sensing experts to interact and share ideas needs to be identified to support long-term coordinated actions
Search for the standard model Higgs boson decaying to a bb pair in events with one charged lepton and large missing transverse energy using the full CDF data set
We present a search for the standard model Higgs boson produced in
association with a W boson in sqrt(s) = 1.96 TeV p-pbar collision data
collected with the CDF II detector at the Tevatron corresponding to an
integrated luminosity of 9.45 fb-1. In events consistent with the decay of the
Higgs boson to a bottom-quark pair and the W boson to an electron or muon and a
neutrino, we set 95% credibility level upper limits on the WH production cross
section times the H->bb branching ratio as a function of Higgs boson mass. At a
Higgs boson mass of 125 GeV/c2 we observe (expect) a limit of 4.9 (2.8) times
the standard model value.Comment: Submitted to Phys. Rev. Lett (v2 contains clarifications suggested by
PRL
Evidence for an Excess of Soft Photons in Hadronic Decays of Z^0
Soft photons inside hadronic jets converted in front of the DELPHI main
tracker (TPC) in events of qqbar disintegrations of the Z^0 were studied in the
kinematic range 0.2 < E_gamma < 1 GeV and transverse momentum with respect to
the closest jet direction p_T < 80 MeV/c. A clear excess of photons in the
experimental data as compared to the Monte Carlo predictions is observed. This
excess (uncorrected for the photon detection efficiency) is (1.17 +/- 0.06 +/-
0.27) x 10^{-3} gamma/jet in the specified kinematic region, while the expected
level of the inner hadronic bremsstrahlung (which is not included in the Monte
Carlo) is (0.340 +/- 0.001 +/- 0.038) x 10^{-3} gamma/jet. The ratio of the
excess to the predicted bremsstrahlung rate is then (3.4 +/- 0.2 +/- 0.8),
which is similar in strength to the anomalous soft photon signal observed in
fixed target experiments with hadronic beams.Comment: 37 pages, 9 figures, Accepted by Eur. Phys. J.
Search for the standard model Higgs boson decaying to a pair in events with no charged leptons and large missing transverse energy using the full CDF data set
We report on a search for the standard model Higgs boson produced in
association with a vector boson in the full data set of proton-antiproton
collisions at TeV recorded by the CDF II detector at the
Tevatron, corresponding to an integrated luminosity of 9.45 fb. We
consider events having no identified charged lepton, a transverse energy
imbalance, and two or three jets, of which at least one is consistent with
originating from the decay of a quark. We place 95% credibility level upper
limits on the production cross section times standard model branching fraction
for several mass hypotheses between 90 and . For a Higgs
boson mass of , the observed (expected) limit is 6.7
(3.6) times the standard model prediction.Comment: Accepted by Phys. Rev. Let
Study of Tau-pair Production in Photon-Photon Collisions at LEP and Limits on the Anomalous Electromagnetic Moments of the Tau Lepton
Tau-pair production in the process e+e- -> e+e-tau+tau- was studied using
data collected by the DELPHI experiment at LEP2 during the years 1997 - 2000.
The corresponding integrated luminosity is 650 pb^{-1}. The values of the
cross-section obtained are found to be in agreement with QED predictions.
Limits on the anomalous magnetic and electric dipole moments of the tau lepton
are deduced.Comment: 20 pages, 9 figures, Accepted by Eur. Phys. J.
Search for the standard model Higgs boson decaying to a bb pair in events with two oppositely-charged leptons using the full CDF data set
We present a search for the standard model Higgs boson produced in
association with a Z boson in data collected with the CDF II detector at the
Tevatron, corresponding to an integrated luminosity of 9.45/fb. In events
consistent with the decay of the Higgs boson to a bottom-quark pair and the Z
boson to electron or muon pairs, we set 95% credibility level upper limits on
the ZH production cross section times the H -> bb branching ratio as a function
of Higgs boson mass. At a Higgs boson mass of 125 GeV/c^2 we observe (expect) a
limit of 7.1 (3.9) times the standard model value.Comment: To be submitted to Phys. Rev. Let
- …