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artículo
Publicado 2021
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The aim of this study was to determine the effects of different amounts of crude glycerol (CGL) on dry matter intake, milk yield, milk protein yield, and milk fatty acid profile of dairy cows grazing on a Kikuyu-based pasture. Six Holstein cows were used in the first third of lactation (mean ± SD 559 ± 22.5 kg body weight, 43 ± 10 days in milk, and 26.8 ± 1.2 kg milk/day) and were randomized within a replicated 3 × 3 Latin square arrangement. Animals grazed the Kikuyu grass and were supplemented with a commercial energy-protein concentrate at 1.0 kg/4.0 kg of milk. The experimental period was 69 days. The following treatments were administered: CGL0 (control, without glycerol), CGL1 (750 g/cow/day), and CGL2 (1,500 g/cow/day). The addition of 750 and 1,500 g of CGL did not affect grass and concentrate intake (P > 0.05). However, milk yield (FCM 3.5%) increased by 14.2% in the CGL...
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artículo
Publicado 2016
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Consumers increasingly demand products in their diets that not only provide the nutrients required for a healthy life, they are also preferably those that can complement with beneficial health properties. In recent decades it has been recognized rosehip, Rosa and Rosa canina the rubiginosa as fruits contain many nutraceutical properties. This paper reviews the research papers carried the Rosehip from the point of view of their importance of their consumption and their health benefits; describing the chemical, physical and biochemical characteristics such as content of phenolic compounds, fatty acids, linoleic acid, mineral; and other important also from an industrial point of view, such as antioxidants, pigments, among other compounds. According to the information collected, the Rosehip is a source of micronutrients including vitamin C and lycopene, also delivering a good nutritional val...
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artículo
Publicado 2016
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Consumers increasingly demand products in their diets that not only provide the nutrients required for a healthy life, they are also preferably those that can complement with beneficial health properties. In recent decades it has been recognized rosehip, Rosa and Rosa canina the rubiginosa as fruits contain many nutraceutical properties. This paper reviews the research papers carried the Rosehip from the point of view of their importance of their consumption and their health benefits; describing the chemical, physical and biochemical characteristics such as content of phenolic compounds, fatty acids, linoleic acid, mineral; and other important also from an industrial point of view, such as antioxidants, pigments, among other compounds. According to the information collected, the Rosehip is a source of micronutrients including vitamin C and lycopene, also delivering a good nutritional val...
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artículo
Publicado 2015
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Prevent fraud has become great interest in the recent years by state organizations and companies because it affects the food control. The globalization, increased imports and exports and free trade agreements have led to greater sharing and access to food worldwide; along with it, the problems associated with fraud such as adulteration, substitution, intentionality, and counterfeiting have been increased. Therefore, there are various tasks associated with food fraud, which in most reviews published only new identification techniques have been discussed. However, a discussion about the types of fraud and its impact on society, bioterrorism and religion, has been little commented. This review focuses primarily on describing the types of fraud that has as objective to obtain economic benefit or cause terrorism. Also, latest techniques available for detecting meat adulteration are mentioned.
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artículo
Publicado 2015
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Prevent fraud has become great interest in the recent years by state organizations and companies because it affects the food control. The globalization, increased imports and exports and free trade agreements have led to greater sharing and access to food worldwide; along with it, the problems associated with fraud such as adulteration, substitution, intentionality, and counterfeiting have been increased. Therefore, there are various tasks associated with food fraud, which in most reviews published only new identification techniques have been discussed. However, a discussion about the types of fraud and its impact on society, bioterrorism and religion, has been little commented. This review focuses primarily on describing the types of fraud that has as objective to obtain economic benefit or cause terrorism. Also, latest techniques available for detecting meat adulteration are mentioned.
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libro
Las dos etnografías de este primer volumen de la Colección muestran las posibilidades y los riesgos de la traducción etnográfica. Se trata de unas "batallas rituales" que se llevan a cabo en una puna llamada Chiaraje, en el departamento de Cuzco. El lector terminará por aceptar la definición de los autores: esos enfrentamientos son batallas rituales. Se enfrentan siempre los mismos grupos, en las mismas fechas. Los resultados del encuentro y las fechas tienen valores éticos, religiosos, de pronóstico; también son un juego y un rito de iniciación. Por lo tanto, no son guerras ni simples peleas entre comarcas vecinas. El lector encontrará traducciones para las palabras apu, machula, entre otras, y juzgará la justeza de las mismas o verá las motivaciones de los etnógrafos en ellas.
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artículo
Publicado 2017
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Objetivo: Demostrar que el efecto protector contra la Hepatitis B en estudiantes menores de 30 años del área de Ciencias de la Salud susceptibles es similar luego de completar los dos esquemas de vacunación (acortado y convencional) en menor tiempo y con menos dosis. Hipotesis: Los 3 esquemas de dosificación en la vacuna contra la hepatitis B generan anticuerpos por encima de 10 ug/100 ml generando igual efecto de protección. Diseño: Analítico, experimental, longitudinal, prospectivo y de cohortes concurrentes. Material y Métodos: Un total de 100 alumnos de ambos sexos de Tecnología Médica de la Facultad de Medicina de la UNMSM susceptibles fueron enrolados, quedaron para el análisis final, 89 alumnos tomando en cuenta los criterios de inclusión y exclusión de acuerdo al objetivo de estudio. Se administró la vacuna a la dosis de 20 ug del antigeno de superficie en 1 mL, en ...
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artículo
Publicado 2015
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Mercedes Tello is supported by a scholarship for postgraduate studies in Cellular and Molecular Biology, from the Consejo Nacional de Ciencia y Tecnología (CONCYTEC-Perú). Ericson Gutierrez is supported by a scholarship for postgraduate studies in Demography and Population Health,from the Belgian Development Q6 Cooperation CTB-Perú (L11PER016)
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artículo
Publicado 2020
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It is relevant to evaluate MDR-tuberculosis in prisons and its impact on the global epidemiology of this disease. However, systematic molecular epidemiology programs in prisons are lacking. A health-screening program performed on arrival for inmates transferred from Peruvian prisons to Spain led to the diagnosis of five MDR-TB cases from one of the biggest prisons in Latin America. They grouped into two MIRU-VNTR–clusters (Callao-1 and Callao-2), suggesting a reservoir of two prevalent MDR strains. A high-rate of overexposure was deduced because one of the five cases was coinfected by a pansusceptible strain. Callao-1 strain was also identified in 2018 in a community case in Spain who had been in the same Peruvian prison in 2002–5. A strain-specific-PCR tailored from WGS data was implemented in Peru, allowing the confirmation that these strains were currently responsible for the majo...
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artículo
Publicado 2016
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This work was supported by the Fermi National Accelerator Laboratory under U.S. Department of Energy (DOE) Award No. DE-AC02-07CH11359 which included the MINERvA construction project. Construction support was also granted by the United States National Science Foundation (NSF) under Grant No. PHY-0619727 and by the University of Rochester. Support for participating scientists was provided by NSF and DOE (USA), Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior fundacao do Ministerio da Educacao (CAPES) and Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) (Brazil), Consejo Nacional de Ciencia y Tecnologia (CoNaCyT) (Mexico), Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT), programs including Fondo Nacional de Desarrollo Cientifico y Tecnologico (FONDECYT) (Chile), by Consejo Nacional de Ciencia, Tecnologia e Innovacion Tecnologica (CONCYTE...
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artículo
Publicado 2017
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Charged-current νμ interactions on carbon, iron, and lead with a final state hadronic system of one or more protons with zero mesons are used to investigate the influence of the nuclear environment on quasielasticlike interactions. The transferred four-momentum squared to the target nucleus, Q2, is reconstructed based on the kinematics of the leading proton, and differential cross sections versus Q2 and the cross-section ratios of iron, lead, and carbon to scintillator are measured for the first time in a single experiment. The measurements show a dependence on the atomic number. While the quasielasticlike scattering on carbon is compatible with predictions, the trends exhibited by scattering on iron and lead favor a prediction with intranuclear rescattering of hadrons accounted for by a conventional particle cascade treatment. These measurements help discriminate between different mod...
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artículo
Publicado 2018
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Construction support also was granted by the United States National Science Foundation under Award PHY-0619727 and by the University of Rochester. Additional support for participating scientists was provided by NSF and DOE (U.S.A.) by CAPES and CNPq (Brazil), by CoNaCyT (Mexico), by Proyecto Basal FB 0821, CONICYT PIA ACT1413, Fondecyt 3170845 and 11130133 (Chile), by PIIC (DGIP-UTFSM), by CONCYTEC, DGI-PUCP and IDI/IGI-UNI (Peru)
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artículo
Neutral-current production of Kþ by atmospheric neutrinos is a background in searches for the proton decay p → Kþν¯. Reactions such as νp → νKþΛ are indistinguishable from proton decays when the decay products of the Λ are below detection threshold. Events with Kþ are identified in MINERvA by reconstructing the timing signature of a Kþ decay at rest. A sample of 201 neutrino-induced neutral-current Kþ events is used to measure differential cross sections with respect to the Kþ kinetic energy, and the nonKþ hadronic visible energy. An excess of events at low hadronic visible energy is observed relative to the prediction of the NEUT event generator. Good agreement is observed with the cross section prediction of the GENIE generator. A search for photons from π0 decay, which would veto a neutral-current Kþ event in a proton decay search, is performed, and a 2σ deficit o...
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artículo
Publicado 2016
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This work was supported by the Fermi National Accelerator Laboratory under U.S. Department of Energy Contract No. DE-AC02-07CH11359 which included the MINERvA construction project. Construction support was also granted by the United States National Science Foundation under Award No. PHY-0619727 and by the University of Rochester. Support for participating scientists was provided by NSF and DOE (U.S.A.), by CAPES and CNPq (Brazil), by CoNaCyT (Mexico), by CONICYT (Chile), by CONCYTEC, DGI-PUCP and IDI/IGI-UNI (Peru), and by Latin American Center for Physics (CLAF). We thank the MINOS Collaboration for use of its near detector data. We acknowledge the dedicated work of the Fermilab staff responsible for the operation and maintenance of the beam line and detector, and we thank the Fermilab Computing Division for support of data processing.
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artículo
Publicado 2019
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CONCYTEC, Direccion de Gestion de la Investigacion-Pontificia Universidad Catolica del Peru (DGI-PUCP), and Vicerrectorado de Investigacion-Universidad Nacional de Ingenieria (VRI-UNI) (Peru); and by the Latin American Center for Physics (CLAF); NCN Opus Grant No. 2016/21/B/ST2/01092 (Poland). We thank the MINOS Collaboration for use of its near detector data. Finally, we thank the staff of Fermilab for support of the beam line, the detector, and the computing infrastructure.
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artículo
Publicado 2017
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The semiexclusive channel νμ þ CH → μ−π0 þ nucleonðsÞ is analyzed using MINERvA exposed to the low-energy NuMI νμ beam with spectral peak at Eν ≃ 3 GeV. Differential cross sections for muon momentum and production angle, π0 kinetic energy and production angle, and for squared four-momentum transfer are reported, and the cross section σðEνÞ is obtained over the range 1.5 GeV ≤ Eν < 20 GeV. Results are compared to GENIE and NuWro predictions and to published MINERvA cross sections for charged-current πþðπ0Þ production by νμðν¯μÞ neutrinos. Disagreements between data and simulation are observed at very low and relatively high values for muon angle and for Q2 that may reflect shortfalls in modeling of interactions on carbon. For π0 kinematic distributions, however, the data are consistent with the simulation and provide support for generator treatments o...
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artículo
Publicado 2014
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This work was supported by the Fermi National Accelerator Laboratory under U.S. Department of Energy Contract No. DE-AC02-07CH11359, which included the MINERvA construction project. Construction support was also granted by the United States National Science Foundation under Grant No. PHY-0619727 and by the University of Rochester. Support for participating scientists was provided by NSF and DOE (USA), by CAPES and CNPq (Brazil), by CoNaCyT (Mexico), by CONICYT (Chile), by CONCYTEC, DGI-PUCP and IDI/IGI-UNI (Peru), by Latin American Center for Physics (CLAF), and by RAS and the Russian Ministry of Education and Science (Russia). We thank the MINOS Collaboration for use of its near detector data. Finally, we thank the staff of Fermilab for support of the beam line and the detector.
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artículo
Publicado 2016
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The MINERvA Collaboration reports a novel study of neutrino-nucleus charged-current deep inelastic scattering (DIS) using the same neutrino beam incident on targets of polystyrene, graphite, iron, and lead. Results are presented as ratios of C, Fe, and Pb to CH. The ratios of total DIS cross sections as a function of neutrino energy and flux-integrated differential cross sections as a function of the Bjorken scaling variable x are presented in the neutrino-energy range of 5-50 GeV. Based on the predictions of charged-lepton scattering ratios, good agreement is found between the data and prediction at medium x and low neutrino energy. However, the ratios appear to be below predictions in the vicinity of the nuclear shadowing region, x<0.1. This apparent deficit, reflected in the DIS cross-section ratio at high Eν, is consistent with previous MINERvA observations [B. Tice (MINERvA Collabo...
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artículo
Publicado 2015
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A study of charged-current muon neutrino scattering on hydrocarbon (CH) in which the final state includes a muon, at least one proton, and no pions is presented. Although this signature has the topology of neutrino quasielastic scattering from neutrons, the event sample contains contributions from quasielastic and inelastic processes where pions are absorbed in the nucleus. The analysis accepts events with muon production angles up to 70◦ and proton kinetic energies greater than 110 MeV. The cross section, when based completely on hadronic kinematics, is well-described by a relativistic Fermi gas nuclear model including the neutrino event generator modeling for inelastic processes and particle transportation through the nucleus. This is in contrast to the quasielastic cross section based on muon kinematics, which is best described by an extended model that incorporates multi-nucleon co...
