7,511 research outputs found
Charmed hadrons in nuclear medium
We study the properties of charmed hadrons in dense matter within a
coupled-channel approach which accounts for Pauli blocking effects and meson
self-energies in a self-consistent manner. We analyze the behaviour in this
dense environment of dynamically-generated baryonic resonances as well as the
open-charm meson spectral functions. We discuss the implications of the
in-medium properties of open-charm mesons on the and the
predicted X(3700) scalar resonances.Comment: 4 pages, 5 figures, invited parallel talk in the 5th International
Conference on Quarks and Nuclear Physics (QNP09), Beijing, September 21-26,
200
Strange and charm mesons at FAIR
We study the properties of strange and charm mesons in hot and dense matter
within a self-consistent coupled-channel approach for the experimental
conditions of density and temperature expected for the CBM experiment at
FAIR/GSI. The in-medium solution at finite temperature accounts for Pauli
blocking effects, mean-field binding of all the baryons involved, and meson
self-energies. We analyze the behaviour in this hot and dense environment of
dynamically-generated baryonic resonances together with the evolution with
density and temperature of the strange and open-charm meson spectral functions.
We test the spectral functions for strange mesons using energy-weighted sum
rules and finally discuss the implications of the properties of charm mesons on
the D_{s0}(2317) and the predicted X(3700) scalar resonances.Comment: 12 pages, 9 figures, invited talk at XXXI Mazurian Lakes Conference
on Physics: Nuclear Physics and the Road to FAIR, August 30-September 6,
2009, Piaski, Polan
Seasonal and spatial variability of rainfall redistribution under Scots pine and Downy oak forests in Mediterranean conditions
The large degree of temporal and spatial variability of throughfall input patterns may lead to significant changes
in the volume of water that reach the soil in each location, and beyond in the hydrological response of forested
hillslopes.
To explore the role of vegetation in the temporal and spatial redistribution of rainfall in Mediterranean climatic
conditions two contrasted stands were monitored. One is a Downy oak forest (Quercus pubescens) and the other is
a Scots pine forest (Pinus sylvestris), both are located in the Vallcebre research catchments (NE Spain, 42º 12¿N,
1º 49¿E). These plots are representative of Mediterranean mountain areas with spontaneous afforestation by Scots
pine as a consequence of the abandonment of agricultural terraces, formerly covered by Downy oaks.
The monitoring design of each plot consists of a set of 20 automatic rain recorders and 40 automatic soil
moisture probes located below the canopy. 100 hemispheric photographs of the canopy were used to place
the instruments at representative locations (in terms of canopy cover) within the plot. Bulk rainfall, stemflow
and meteorological conditions above the forest cover are also automatically recorded. Canopy cover as well as
biometric characteristics of the plots are also regularly measured.
This work presents the first results describing the variability of throughfall beneath each forest stand and compares
the persistence of temporal patterns among stands, and for the oaks stand among the leafed and the leafless
period. Furthermore, canopy structure, rainfall characteristics and meteorological conditions of rainfall events are
evaluated as main drivers of throughfall redistribution
Charmed mesons in nuclear matter
We obtain the properties of charmed mesons in dense matter using a
coupled-channel approach which accounts for Pauli blocking effects and meson
self-energies in a self-consistent manner. We study the behaviour of
dynamically-generated baryonic resonances together with the open-charm meson
spectral functions in this dense nuclear environment. We discuss the
implications of the in-medium properties of open-charm mesons on the
and the predicted X(3700) scalar resonances, and on the
formation of -mesic nuclei.Comment: 5 pages, 5 figures, 1 table, to appear in Proceedings of XIII
International Conference on Hadron Spectroscopy, November 29 - December 4,
2009, Florida State Universit
Thermal performance analysis of the double sided-linear switched reluctance motor
This paper presents an exhaustive study about the propulsion force and the thermal performance of the double-sided flat Linear Switched Reluctance Motor (LSRM) according to the number of phases (m) and the pole stroke (PS). The analysis is performed by means of the Finite Element Method (FEM) for electromagnetic computations and a lumped parameter for thermal model (LPT) both linked to an optimization algorithm based on the Response Surface Methodology (RSM) in order to reduce the computing time. The results show the optimal design of LSRM from the point of view of the thermo-mechanical performance for a given insulation class and a duty cycle operating conditions
Plasma Non-Enzymatic Antioxidant Capacity (NEAC) in Relation to Dietary NEAC, Nutrient Antioxidants and Inflammation-Related Biomarkers
The results presented in this article constitute part of the C.J. Carrión-GarcÃa’s Doctoral Thesis
performed in the Nutrition and Food Science Doctorate Program of the University of Granada.(1) Background: Little is known about the interlinkages between dietary and plasma
non-enzymatic antioxidant capacity (D-NEAC and P-NEAC, respectively) and the body’s antioxidant
and inflammation response. Our aim was to explore these associations in 210 participants from two
Spanish European Prospective Investigation into Cancer and Nutrition (EPIC) centers. (2) Methods:
D-NEAC was estimated using published NEAC values in food. P-NEAC and total polyphenols
(TP) were quantified by FRAP (ferric-reducing antioxidant power), TRAP (total radical-trapping
antioxidant parameter), TEAC-ABTS (trolox equivalent antioxidant capacity-Azino Bis Thiazoline
Sulfonic), ORAC (oxygen radical absorbance capacity) and Folin–Ciocalteu assays. Nutrient antioxidants
(carotenes, α-tocopherol, ascorbic acid, retinol, uric acid, Q9 and Q10 coenzymes) and inflammation
markers (IL-6, IL-8, CRP, TNF-α, PAI-I, resistin and adiponectin) were also analyzed. Spearman correlation
and linear regression analyses were performed in association analyses. Analyses were stratified by
covariates and groups were defined using cluster analysis. (3) Results: P-FRAP was correlated with
D-NEAC, and significantly associated with P-NEAC in multivariate adjusted models. P-FRAP levels
were also significantly associated with plasma antioxidants (log2 scale: TP β = 0.26; ascorbic acid
β = 0.03; retinol β = 0.08; α-tocopherol β = 0.05; carotenes β = 0.02; Q10 β = 0.06; uric acid β = 0.25),
though not with inflammation-related biomarkers. Different profiles of individuals with varying levels
of P-NEAC and biomarkers were found. (4) Conclusions: P-NEAC levels were to some extent associated
with D-NEAC and plasma antioxidants, yet not associated with inflammation response.This research was co-funded by the Health Research Found (FIS), Acción Estratégica en Salud (AES),
of the Spanish Ministry of Economy and Competitiveness, grant number PI12/00002, and the European Regional
Development Fund (ERDF)
KINETIC AND KINEMATIC ANALYSIS OF THE DOMINANT AND NON-DOMINANT KICKING LEG IN THE TAEKWONDO ROUNDHOUSE KICK
The purpose of this study was to examine kinematic variables relevant to kick performance with the dominant and non-dominant leg, in a roundhouse kick measured from three execution distances. Forty-three taekwondo athletes that had competitive taekwondo experience participated in the study. A dependent t-test indicated that there were no differences between extremities at any distance (p > .01). Based on these results, competitive taekwondo players do not seem to reveal differences in limb kinematics. The results also showed the influence of the distance from which the dominant leg explains a larger percentage of variance in reaction time (24%), execution time (20%) and total response time (60%) of the non-dominant leg from a short distance, whereas regarding impact force (22%), this higher percentage is explained from a long distance
Influence of canopy traits on spatio-temporal variability of throughfall in Mediterranean Downy oak and Scots pine stands
The spatio-temporal variability of throughfall is the result of the interaction of biotic factors, related to the canopy
traits, and abiotic factors, linked to the meteorological conditions. This variability may lead to significant differences
in the volume of water and solutes that reach the ground in each location, and beyond in the hydrological
and biogeochemical dynamics of forest soils.
Two forest stands in Mediterranean climatic conditions were studied to analyse the role of biotic and abiotic factors
in the temporal and spatial redistribution of throughfall. The monitored stands are a Downy oak forest (Quercus
pubescens) and a Scots pine forest (Pinus sylvestris), both located in the Vallcebre research catchments (NE
Spain, 42º 12¿N, 1º 49¿E). The study plots are representative of Mediterranean mountain areas with spontaneous
afforestation by Scots pine as a consequence of the abandonment of agricultural terraces, formerly covered by
Downy oaks. The monitoring design of each plot consisted of a set of 20 automatic rain recorders and 40 automatic
soil moisture probes located below the canopy. 100 hemispheric photographs of the canopy were used to place
the instruments at representative locations (in terms of canopy cover) within the plot. Bulk rainfall, stemflow
and meteorological conditions above the forest cover were also automatically recorded. Canopy cover as well as
biometric characteristics of the plots were also regularly measured.
The results indicate a temporal persistence of throughfall in both stands, as observed elsewhere. However, for the
oak plot the seasonal evolution of canopy traits added additional variability, with higher variability in summer
and different locations of wet and dry spots depending on the season. Furthermore, this work investigates the
influence of canopy structure on the spatial variability of throughfall by analysing a large set of forest parameters,
from main canopy traits to detailed leaves and wood characteristics. The analysis includes the consideration of the
interaction of main abiotic factors with canopy traits
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