425 research outputs found

    Expression of estrogenic response genes to different concentration of 17ß-estradiol in male mosquitofish (Gambusia yucatana)

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    The proximate composition, amino acids and fatty acids composition in the muscle of wild, inshore and offshore cage-cultured large yellow croaker, Pseudosciaena crocea (Richardson, 1846), were determined to identify nutritional differences. Wild fish groups showed highest content of moisture and crude protein, but the lowest lipid content. Offshore cage-cultured fish showed significantly higher content of moisture and crude protein content, but lower crude lipid content than inshore cage-cultured fish. The content of aspartic acid, glutamic acid, and alanine was higher in wild large yellow croaker than inshore cage-cultured groups, but similar to offshore cage-cultured fish. Significant lower contents of total amino acids, essential amino acids, non-essential amino acids and flavor-enhancing amino acids content were recorded in two cultured fish groups than those in wild group. While no major differences in fatty acids composition were found between wild and cage-cultured groups except for linoleic acid. The fish from offshore cages has much better nutrient profile than inshore cage cultured fish, but was still inferior compared to wild fish

    The Mexican consensus on the diagnosis, treatment, and prevention of NSAID-induced gastropathy and enteropathy

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    Más de 30 millones de personas consumen diariamente antiinflamatorios noesteroideos (AINE) en el mundo, y este consumo se ve incrementado anualmente. Aunque losAINE poseen propiedades analgésicas y antiinflamatorias, sus eventos adversos gastrointesti-nales son bien reconocidos. En nuestro país no existía un consenso respecto al diagnóstico,tratamiento y prevención de la gastropatía y la enteropatía por AINE, por lo que la AsociaciónMexicana de Gastroenterología reunió a un grupo de expertos para establecer recomendacionesde utilidad para la comunidad médica. En este consenso se emitieron 33 recomendaciones. Elconsenso destaca que el riesgo de toxicidad gastrointestinal de los AINE varía según el fármacoempleado y su farmacocinética, lo cual debe ser considerado al momento de su prescripción. Losfactores de riesgo de complicación gastroduodenal por AINE son: antecedente de úlcera pép-tica, edad mayor a 65 a˜nos, dosis altas del AINE, infección por Helicobacter pylori (H.pylori), ypresencia de comorbilidades graves. Los síntomas y el da˜no gastroduodenal inducido por AINEson variables ya que puede cursar asintomático o manifestarse como anemia por deficiencia dehierro, hemorragia, estenosis y perforación. La cápsula endoscópica y la enteroscopia son méto-dos diagnósticos directos en la enteropatía por AINE. Respecto a la prevención, se recomiendaprescribir la dosis mínima necesaria de un AINE para obtener el efecto deseado y durante elmenor tiempo. Finalmente, los inhibidores de la bomba de protones (IBP) representan el están-dar de oro para la profilaxis y tratamiento de los efectos gastroduodenales, mas no son útilesen la enteropatía

    Consenso mexicano sobre diagnóstico, prevención y tratamiento de la gastropatía y enteropatía por antiinflamatorios no esteroideos

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    Más de 30 millones de personas consumen diariamente antiinflamatorios no este-roideos (AINE) en el mundo y este consumo se ve incrementado a˜no tras a˜no. Aunque los AINEposeen propiedades analgésicas y antiinflamatorias, sus eventos adversos gastrointestinales sonbien reconocidos. En nuestro país no existía un consenso respecto al diagnóstico, tratamientoy prevención de la gastropatía y la enteropatía por AINE, por lo que la Asociación Mexicana deGastroenterología reunió a un grupo de expertos para establecer recomendaciones de utilidadpara la comunidad médica. En este consenso se emitieron 33 recomendaciones. El consensodestaca que el riesgo de toxicidad gastrointestinal de los AINE varía según el fármaco empleadoy su farmacocinética, lo cual debe ser considerado al momento de su prescripción. Los factoresde riesgo de complicación gastroduodenal por AINE son: antecedente de úlcera péptica, edadmayor de 65 a˜nos, dosis altas del AINE, infección por Helicobacter pylori y presencia de comor-bilidades graves. Los síntomas y el da˜no gastroduodenal inducido por AINE son variables, ya quepuede cursar asintomático o manifestarse como anemia por deficiencia de hierro, hemorragia,estenosis y perforación. La cápsula endoscópica y la enteroscopia son métodos diagnósticosdirectos en la enteropatía por AINE. Respecto a la prevención, se recomienda prescribir la dosismínima necesaria de un AINE para obtener el efecto deseado y durante el menor tiempo. Porúltimo, los inhibidores de la bomba de protones representan el estándar de oro para la profilaxisy tratamiento de los efectos gastroduodenales, mas no son útiles en la enteropatí

    Measurement of Energy Correlators inside Jets and Determination of the Strong Coupling Formula Presented

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    Energy correlators that describe energy-weighted distances between two or three particles in a hadronic jet are measured using an event sample of s\sqrt{s}=13 TeV proton-proton collisions collected by the CMS experiment and corresponding to an integrated luminosity of 36.3 fb1^{−1}. The measured distributions are consistent with the trends in the simulation that reveal two key features of the strong interaction: confinement and asymptotic freedom. By comparing the ratio of the measured three- and two-particle energy correlator distributions with theoretical calculations that resum collinear emissions at approximate next-to-next-to-leading-logarithmic accuracy matched to a next-to-leading-order calculation, the strong coupling is determined at the Z boson mass: αS_S (mZ_Z)=0.1229 0.00400.0050\frac{0.0040}{-0.0050} , the most precise αS_SmZ_Z value obtained using jet substructure observable

    Measurement of multijet azimuthal correlations and determination of the strong coupling in proton-proton collisions at s=13TeV\sqrt{s}=13\,\text {Te}\hspace{-.08em}\text {V}

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    A measurement is presented of a ratio observable that provides a measure of the azimuthal correlations among jets with large transverse momentum pT . This observable is measured in multijet events over the range of pT=360–3170 GeV based on data collected by the CMS experiment in proton-proton collisions at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 134 fb1^{−1} . The results are compared with predictions from Monte Carlo parton-shower event generator simulations, as well as with fixed-order perturbative quantum chromodynamics (pQCD) predictions at next-to-leading-order (NLO) accuracy obtained with different parton distribution functions (PDFs) and corrected for nonperturbative and electroweak effects. Data and theory agree within uncertainties. From the comparison of the measured observable with the pQCD prediction obtained with the NNPDF3.1 NLO PDFs, the strong coupling at the Z boson mass scale is αS_S(mZ_Z) = 0.1177 ± 0.0013 (exp)+0.01160.0073\frac {+0.0116}{−0.0073} (theo) = 0.1177+0.01170.0074\frac {+0.0117}{−0.0074} , where the total uncertainty is dominated by the scale dependence of the fixed-order predictions. A test of the running of αS_S in the TeV region shows no deviation from the expected NLO pQCD behaviour

    Measurement of multijet azimuthal correlations and determination of the strong coupling in proton-proton collisions at s=13TeV\sqrt{s}=13\,\text {Te}\hspace{-.08em}\text {V}

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    A measurement is presented of a ratio observable that provides a measure of the azimuthal correlations among jets with large transverse momentum pT . This observable is measured in multijet events over the range of pT=360–3170 GeV based on data collected by the CMS experiment in proton-proton collisions at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 134 fb1^{−1} . The results are compared with predictions from Monte Carlo parton-shower event generator simulations, as well as with fixed-order perturbative quantum chromodynamics (pQCD) predictions at next-to-leading-order (NLO) accuracy obtained with different parton distribution functions (PDFs) and corrected for nonperturbative and electroweak effects. Data and theory agree within uncertainties. From the comparison of the measured observable with the pQCD prediction obtained with the NNPDF3.1 NLO PDFs, the strong coupling at the Z boson mass scale is αS_S(mZ_Z) = 0.1177 ± 0.0013 (exp)+0.01160.0073\frac {+0.0116}{−0.0073} (theo) = 0.1177+0.01170.0074\frac {+0.0117}{−0.0074} , where the total uncertainty is dominated by the scale dependence of the fixed-order predictions. A test of the running of αS_S in the TeV region shows no deviation from the expected NLO pQCD behaviour

    Search for heavy neutral leptons in final states with electrons, muons, and hadronically decaying tau leptons in proton-proton collisions at s \sqrt{s} = 13 TeV

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    A search for heavy neutral leptons (HNLs) of Majorana or Dirac type using proton-proton collision data at = 13 TeV is presented. The data were collected by the CMS experiment at the CERN LHC and correspond to an integrated luminosity of 138 fb−1. Events with three charged leptons (electrons, muons, and hadronically decaying tau leptons) are selected, corresponding to HNL production in association with a charged lepton and decay of the HNL to two charged leptons and a standard model (SM) neutrino. The search is performed for HNL masses between 10 GeV and 1.5 TeV. No evidence for an HNL signal is observed in data. Upper limits at 95% confidence level are found for the squared coupling strength of the HNL to SM neutrinos, considering exclusive coupling of the HNL to a single SM neutrino generation, for both Majorana and Dirac HNLs. The limits exceed previously achieved experimental constraints for a wide range of HNL masses, and the limits on tau neutrino coupling scenarios with HNL masses above the W boson mass are presented for the first time

    Search for the decay of the Higgs boson to a pair of light pseudoscalar bosons in the final state with four bottom quarks in proton-proton collisions at s \sqrt{\textrm{s}} = 13 TeV

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    Constraints on anomalous Higgs boson couplings from its production and decay using the WW channel in proton–proton collisions at s=13 TeV\sqrt{s} = 13~\text {TeV}

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