561 research outputs found
Anomalous quartic couplings in collisions at the LHeC and the FCC-he
We conducted a study on measuring production and on the sensitivity
limits at Confidence Level on thirteen anomalous couplings obtained by
dimension-8 operators which are related to the anomalous quartic
couplings. We consider the main reaction with the sub-process at
the Large Hadron electron Collider (LHeC) and the Future Circular
Collider-hadron electron (FCC-he). For the LHeC, energies of the beams
are taken to be and 140 GeV and the energy of the beams is taken
to be TeV. For the FCC-he, energies of the beams are taken to
be and 140 GeV and the energy of the beams is taken to be TeV, respectively. It is interesting to notice that the LHeC and the FCC-he
will lead to model-independent limits on the anomalous quartic
couplings which are one order of magnitude stringent than the CMS Collaboration
limits, in addition to being competitive with other limits reported in the
literature.Comment: 28 pages, 10 Figures and 13 Table
Alimentación de modelos cuantitativos con información subjetiva: aplicación Delphi en la elaboración de un modelo de imputación del gasto turístico individual en Catalunya
Componentes minoritarios de aceites obtenidos de frutos de palmeras de la región amazónica
This study deals with the characterization of minor compounds in oils obtained from the mesocarp of fruits of the main palm species from the State of Amapá, Brazil, i.e. bacaba (Oenocarpus bacaba), buriti (Mauritia flexuosa), inajá (Maximiliana maripa), pupunha (Bactris gasipaes) and tucumã (Astrocaryum vulgare). The concentration of minor glyceridic compounds, i.e. dimeric triacylglycerols (TAG), the oxidized TAG and diacylglycerols (DAG) related to oil quality, and the compounds of unsaponifiable matter, i.e. hydrocarbons, aliphatic alcohols, sterols and tocopherols have been determined.
The results indicate that the extracted oils had good initial quality, with DAG as the major glyceridic compound. The contents of hydrocarbons (50-734 mg·kg–1) and aliphatic alcohols (80-490 mg·kg–1) were highly variable with inajá oil containing the highest contents. In the case of tocopherols, buriti (1567 mg·kg–1) and tucumã (483 mg·kg–1) oils had the highest contents and the presence of significant amounts of tocotrienols was only detected in inajá oil. Finally, high concentrations of sterols were found in all the samples, particularly in the oils from pupunha (4456 mg·kg–1) and tucumã (2708 mg·kg–1), with β-sitosterol being the major sterol in all the samples with percentages between 65 and 83%.El objetivo de este estudio fue la caracterización de los componentes menores presentes en los aceites obtenidos del mesocarpio de frutos de especies de bacaba (Oenocarpus bacaba), buriti (Mauritia flexuosa), inajá (Maximiliana maripa), pupuña (Bactris gasipaes) y tucumá (Astrocaryum vulgare), de importante producción en el Estado de Amapá, Brasil.
Se determinaron las dos principales fracciones presentes en los aceites. Por una parte, los compuestos menores derivados de los componentes mayoritarios o triglicéridos (TAG): dímeros de TAG, TAG oxidados y diglicéridos (DAG) relacionados con la calidad de los aceites y, por otra, los principales grupos presentes en la fracción insaponificable (hidrocarburos, alcoholes alifáticos, esteroles y tocoferoles) relacionados con la calidad de los aceites.
Los resultados indicaron que todos los aceites extraídos tenían buena calidad inicial, siendo los DAG los mayoritarios entre los compuestos menores glicerídicos. La concentración de hidrocarburos (50-734 mg·kg–1) y de alcoholes alifáticos (80-490 mg·kg–1) fue muy variable correspondiendo al aceite de inajá el mayor contenido en hidrocarburos y en alcoholes. En el caso de los tocoferoles, las mayores cantidades correspondieron a los aceites de buriti (1567 mg·kg–1) y tucumá (483 mg·kg–1) y la presencia de cantidades significativas de tocotrienoles sólo se detectaron en aceite de inajá. Finalmente, se encontraron concentraciones elevadas de esteroles en todas las muestras, especialmente en los aceites de pupuña (4456 mg·kg–1) y tucumá (2708 mg·kg–1), siendo el β-sitosterol el esterol mayoritario con porcentajes entre 65 y 83%
Alimentación de modelos cuantitativos con información subjetiva: aplicación Delphi en la elaboración de un modelo de imputación del gasto turístico individual en Catalunya
El presente artículo presenta un estudio realizado para el Institut d'Estadística de Catalunya, donde se ha aplicado una técnica que trabaja con información subjetiva (el Método Delphi) para obtener unos datos que puedan ser empleados en la alimentación parcial de un modelo matemático, que se nutre principalmente de datos estadísticos (objetivos), con el fin de incrementar la utilidad global del modelo.
El artículo justifica la utilización en determinadas circunstancias de la información subjetiva, describe el método Delphi y plantea una serie de proposiciones referentes a la utilidad, empleo y mejora de esta técnica que se ven refrendadas en el caso expuesto
Study of the projected sensitivity on the anomalous quartic gauge couplings via production at the CLIC
Gauge boson self-couplings are completely defined by the non-Abelian gauge
symmetry of the Standard Model (SM), thus direct search for these couplings are
extremely significant in understanding the gauge structure of the SM. The
possible deviation from the SM predictions of gauge boson self-couplings would
be a sign of the presence of new physics beyond the SM. In this work, we study
the sensitivities on the anomalous couplings defined by dimension-8 operators
related to the and quartic vertices
through the process with Z-boson decaying to charged
leptons at the Compact Linear Collider (CLIC). We analyze the center-of-mass
energy of 3 TeV, integrated luminosities of ,
systematic uncertainties of , and unpolarized and
polarized electron beams for extraction of expected sensitivity on the
anomalous couplings at confidence level, which are
especially sensitive to the channel. It is clear from the
results that if the systematic error is improved, we expect better limits on
the couplings. The best limits obtained on the anomalous quartic couplings for
the process with TeV,
and can be approximately improved up to about
two times better than the limits obtained with . Our
sensitivities on the anomalous quartic couplings with can
set more stringent sensitivity by two orders of magnitude concerning the best
sensitivity derived from the current experimental limits. Finally, with initial
electron beam polarization, the sensitivity of the anomalous quartic couplings
improves by almost a factor of 1.2.Comment: 38 pages, 22 figure
Study on the anomalous quartic couplings of electroweak bosons in collisions at the LHeC and the FCC-he
In this paper, a study is carried out on the production to probe quartic couplings
using 10, 100 of collisions data at = 1.30,
1.98 GeV at the Large Hadron electron Collider (LHeC) and 100, 1000 with = 3.46, 5.29 GeV at the Future Circular
Collider-hadron electron (FCC-he). Production cross-sections are determined for
both at leptonic and hadronic decay channel of the -boson. With the data
from future colliders, it is possible to obtain sensitivity measures at
C.L. on the anomalous and
couplings which are competitive with the limits obtained by the LHC, as well as
with others limits reported in the literature. The production mode in collisions offers a window for
study the quartic electroweak bosons couplings at the LHeC
and the FCC-he, which provides a much cleaner collision environment than the
LHC.Comment: 27 pages , 10 figure
Analgesic effect and side effects of celecoxib and meloxicam in canine hip osteoarthritis
Objective. To evaluate the pharmacological, clinical and toxicological effects of celecoxib and meloxicam for analgesia for 30 days in dogs with hip osteoarthritis. Materials and methods. Twenty-four patients were evaluated, 75% were females with an average age of 7.16 ± 2.06 years and twenty five percent were males with an average age of 7.83 ± 2.22 years. All patients had hip osteoarthritis and they were randomized into two groups; one group received oral celecoxib 5 mg/kg every 12 hours during one month and the second group received oral meloxicam 0.2 mg/kg every 24 hours during 1 month. The patients were evaluated for analgesia, and hematological, renal, liver, and coagulation tests on days 0, 10th and 30th after treatment initiation, and a gastric endoscopy on day 30. Statistical analysis was performed using a HSD Tukey test and c2 with a 5% level of statistical significance. Results. Both drugs reduced articular pain according to the Melbourne scale during the 30 days of treatment (p≤0.05). Hematological, renal, hepatic and coagulation tests were normal in both treatment groups. All patients presented chronic gastritis on endoscopy on day 30th. Conclusions. Both drugs decreased pain at day 30th without causing alterations in hematological, renal, hepatic or coagulation tests after 30 days of treatment. However, both drugs induced chronic gastritis
Study on the anomalous quartic W+W-yy couplings of electroweak bosons in e-p collisions at the LHeC and the FCC-he
In this paper, a study is carried out on the e−p --> e−y*p --> pW−ynu_e production to probe quartic W+W−yy couplings at the Large Hadron electron Collider (LHeC) with s= 1.30, 1.98 TeV and at the Future Circular Collider-hadron electron (FCC-he) with s= 3.46, 5.29 TeV. Production cross-sections are determined for both at leptonic and hadronic decay channels of the W-boson. With the data from future e−p colliders, it is possible to obtain sensitivity measures at 95% C.L
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