1,557 research outputs found

    NIRS potential use for the determination of natural resources quality from dehesa (acorn and grass) in Montanera system for Iberian pigs.

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    NIRS technology has been used as an alternative to conventional methods to determinate the content of nutrients of acorns and grass from dehesa ecosystem. Dry matter (DM), crude fat (CF), crude protein (CP), starch, total phenolic compounds (TP), α-tocopherol, γ-tocopherol, fatty acids, neutral detergent fiber (NDF), total antioxidant activity (TAA) and total energy (TE) were determined by conventional methods for later development of NIRS predictive equations. The NIR spectrum of each sample was collected and for all studied parameters, a predictive model was obtained and external validated. Good prediction equations were obtained for moisture, crude fat, crude protein, total energy and γ-tocopherol in acorns samples, with high coefficients of correlation (1-VR) and low standard error of prediction (SEP) (1-VR=0.81, SEP=2.62; 1-VR=0.92, SEP=0.54; 1-VR=0.86, SEP=0.47; 1-VR=0.84, SEP=0.2; 1-VR=0.88, SEP=5.4, respectively) and crude protein, NDF, α-tocopherol and linolenic acid content in grass samples (1-VR=0.9, SEP=1.99; 1-VR=0.87, SEP=4.13; 1-VR=0.76, SEP=10.9; 1-VR=0.82, SEP=0.6, respectively). Therefore, these prediction models could be used to determinate the nutritional composition of Montanera natural resources

    Quarkonium dissociation by anisotropy

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    We compute the screening length for quarkonium mesons moving through an anisotropic, strongly coupled N=4 super Yang-Mills plasma by means of its gravity dual. We present the results for arbitrary velocities and orientations of the mesons, as well as for arbitrary values of the anisotropy. The anisotropic screening length can be larger or smaller than the isotropic one, and this depends on whether the comparison is made at equal temperatures or at equal entropy densities. For generic motion we find that: (i) mesons dissociate above a certain critical value of the anisotropy, even at zero temperature; (ii) there is a limiting velocity for mesons in the plasma, even at zero temperature; (iii) in the ultra-relativistic limit the screening length scales as (1v2)ϵ(1-v^2)^\epsilon with \epsilon =1/2, in contrast with the isotropic result \epsilon =1/4.Comment: 39 pages, 26 figures; v2: minor changes, added reference

    Análisis de la colocación en sets de diferente intensidad, en el U-21 men´s world championsip de voleibol

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    El objetivo de la presente investigación fue conocer las variables de la colocación que afectan al desarrollo del rally, en sets de diferente intensidad, en voleibol masculino U-21. La muestra del estudio estuvo compuesta por 1688 acciones de colocación que se desarrollaron en el complejo 1 (KI) (1100 en sets de intensidad alta y 588 en sets de intensidad no alta), realizadas por las cuatro selecciones mejor clasificadas en el U-21 Men´s World Championsip de voleibol. La observación correspondió a cinco partidos de cada una de las selecciones participantes. Las variables del estudio fueron: origen del colocador, zona de colocación, tipo de colocación, técnica de colocación, eficacia de colocación, zona hacia donde se envía la colocación, tiempo de colocación, desarrollo del rally, e intensidad del set. Los resultados de la regresión logística multinomial mostraron que, tanto en los sets de intensidad alta como en los de intensidad no alta, el tipo de colocación y la técnica de colocación fueron predictoras del desarrollo del rally. Además, en los sets de intensidad alta, la zona y eficacia de colocación también actuaron como predictoras del desarrollo del rally. En los sets de intensidad no alta, la zona hacia donde se envía la colocación actuó como predictora del desarrollo del rally, no siendo predictora en los sets de intensidad alta. Dichos resultados pueden ser considerados para el diseño de tareas específicas de entrenamiento de la colocación, acordes a diferentes situaciones de juego

    Predictors of Reception Efficacy in Men's U21 and Absolute World Volleyball

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    El objetivo de la investigación fue conocer las variables de recepción que predecían su eficacia, en diferentes niveles de juego (U-21, absoluto) en voleibol masculino. La muestra del estudio estuvo compuesta 3442 acciones de recepción, de las cuales 1894 corresponden a categoría U-21 (U-21 Men´s World Championship) y 1548 a categoría absoluta (Absolute Men´s World Championship). Las variables del estudio fueron: función del receptor, desplazamiento previo del receptor, tipo de recepción, posición del receptor, técnica de recepción, zona de recepción, eficacia de recepción. El análisis de regresión logística multinomial mostró que, el desplazamiento previo del receptor y la técnica de recepción fueron predictoras en ambas categorías, U-21 y absoluta; el tipo de recepción y zona de recepción fueron predictoras únicamente en U-21; la posición del receptor fue predictora únicamente en absoluta. Dicha información puede ayudar al proceso de entrenamiento favoreciendo el diseño de tareas concretas para cada nivel de juego.The aim of the study was to understand which variables of the reception action predict reception efficacy in two different competition categories (U-21, absolute) in male volleyball. The study sample comprised 3,442 serve-reception actions: 1,894 performed by players in U-21 category (U-21 Men´s World Championship) and 1,548 performed by players in senior category (senior Men’s World Championship). The variables considered as predictors were: receiver player, previous displacement of the receiver, type of reception, receiver position, reception technique reception zone. Logistic regression analysis showed that previous displacement of the receiver and reception technique were predictors of reception efficacy in both categories, U-21 and senior. Type of reception and reception zone were predictors of efficacy in the U-21 category, but not the senior category. Receiver position was predictive of efficacy uniquely for the senior. These may benefit the training process by favouring the design of specific tasks for each level of play

    Mid-Upper Arm Circumference based Nutrition Programming: evidence for a new approach in regions with high burden of Acute Malnutrition

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    In therapeutic feeding programs (TFP), mid-upper arm circumference (MUAC) shows advantages over weight-for-height Z score (WHZ) and is recommended by the World Health Organization (WHO) as an independent criterion for screening children 6-59 months old. Here we report outcomes and treatment response from a TFP using MUAC ≤118 mm or oedema as sole admission criteria for severe acute malnutrition (SAM)

    Referred pain from myofascial trigger points in head and neck–shoulder muscles reproduces head pain features in children with chronic tension type headache

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    Our aim was to describe the referred pain pattern and areas from trigger points (TrPs) in head, neck, and shoulder muscles in children with chronic tension type headache (CTTH). Fifty children (14 boys, 36 girls, mean age: 8 ± 2) with CTTH and 50 age- and sex- matched children participated. Bilateral temporalis, masseter, superior oblique, upper trapezius, sternocleidomastoid, suboccipital, and levator scapula muscles were examined for TrPs by an assessor blinded to the children’s condition. TrPs were identified with palpation and considered active when local and referred pains reproduce headache pain attacks. The referred pain areas were drawn on anatomical maps, digitalized, and also measured. The total number of TrPs was significantly greater in children with CTTH as compared to healthy children (P < 0.001). Active TrPs were only present in children with CTTH (P < 0.001). Within children with CTTH, a significant positive association between the number of active TrPs and headache duration (rs = 0.315; P = 0.026) was observed: the greater the number of active TrPs, the longer the duration of headache attack. Significant differences in referred pain areas between groups (P < 0.001) and muscles (P < 0.001) were found: the referred pain areas were larger in CTTH children (P < 0.001), and the referred pain area elicited by suboccipital TrPs was larger than the referred pain from the remaining TrPs (P < 0.001). Significant positive correlations between some headache clinical parameters and the size of the referred pain area were found. Our results showed that the local and referred pains elicited from active TrPs in head, neck and shoulder shared similar pain pattern as spontaneous CTTH in children, supporting a relevant role of active TrPs in CTTH in children

    Control of Pyrethroid-Resistant Chagas Disease Vectors with Entomopathogenic Fungi

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    Chagas disease, also known as American Trypanosomiasis, is the most relevant parasitic disease in Latin America, being a major burden that affects mostly poor human populations living in rural areas. The kissing-bugs of the Triatominae family transmit the parasite Trypanosoma cruzi by infectious blood-sucking; Triatoma infestans is the vector of major relevance in the southern Cone of South America. Current control strategies, heavily based on residual insecticide spraying, are threatened by the emergence of pyrethroid-resistant bug populations. Furthermore, ensuring the long-term and sustainable control of this overwhelming disease remains a major challenge. Here we show the utility of a simple, low-cost, biological control methodology against T. infestans bugs, regardless of their susceptibility to pyrethroid insecticides. It is based on the understanding of the initial contact interactions between a mycoinsecticide agent—the fungus Beauveria bassiana—and the host defense barrier, the bug cuticle. The proposed methodology is also supported by present data showing a relationship between the triatomine cuticle width and its hydrocarbon surface components, with insecticide resistance. These results will help to provide a safe and efficient alternative to overcome pyrethroid-resilience of these noxious bugs. A high transfer potential to immediate application in rural communities located in remote areas inaccessible to sanitary control teams, and to the control of other Chagas disease vectors as well, is also envisaged

    Preservation of bone tissue integrity with temperature control for in situ SR-MicroCT experiments

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    © 2018 by the authors. Digital volume correlation (DVC), combined with in situ synchrotron microcomputed tomography (SR-microCT) mechanics, allows for 3D full-field strain measurement in bone at the tissue level. However, long exposures to SR radiation are known to induce bone damage, and reliable experimental protocols able to preserve tissue properties are still lacking. This study aims to propose a proof-of-concept methodology to retain bone tissue integrity, based on residual strain determination using DVC, by decreasing the environmental temperature during in situ SR-microCT testing. Compact and trabecular bone specimens underwent five consecutive full tomographic data collections either at room temperature or 0 °C. Lowering the temperature seemed to reduce microdamage in trabecular bone but had minimal effect on compact bone. A consistent temperature gradient was measured at each exposure period, and its prolonged effect over time may induce localised collagen denaturation and subsequent damage. DVC provided useful information on irradiation-induced microcrack initiation and propagation. Future work is necessary to apply these findings to in situ SR-microCT mechanical tests, and to establish protocols aiming to minimise the SR irradiation-induced damage of bone

    White matter injury restoration after stem cell administration in subcortical ischemic stroke

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    This is an Open Access article distributed under the terms of the Creative Commons Attribution License.-- et al.[Introduction]: An animal model of subcortical ischemic stroke with white matter affectation was induced in rats by injection of endothelin-1. At 24 hours, 2 × 10 6 ADMSC were administered intravenously to the treatment group. Functional evaluation, lesion size, fiber tract integrity, cell death, proliferation, white matter repair markers (Olig-2, NF, and MBP) and NogoA were all studied after sacrifice (7 days and 28 days). ADMSC migration and implantation in the brain as well as proteomics analysis and functions of the secretome were also analyzed. [Results]: Neither ADMSC migration nor implantation to the brain was observed after ADMSC administration. In contrast, ADMSC implantation was detected in peripheral organs. The treatment group showed a smaller functional deficit, smaller lesion area, less cell death, more oligodendrocyte proliferation, more white matter connectivity and higher amounts of myelin formation. The treated animals also showed higher levels of white matter-associated markers in the injured area than the control group. Proteomics analysis of the ADMSC secretome identified 2,416 proteins, not all of them previously described to be involved in brain plasticity. [Conclusions]: White matter integrity in subcortical stroke is in part restored by ADMSC treatment; this is mediated by repair molecular factors implicated in axonal sprouting, remyelination and oligodendrogenesis. These findings are associated with improved functional recovery after stroke.This study was supported by research grants PS12/01754, PI11/00909 and INVICTUS (RD12/0014) (Spanish Neurovascular Network), SAF2010-37926, ProteoRed-PT13/0001/0017 and a Sara Borrell postdoctoral fellowship (CD12/00706, to LOO) from Research Institute Carlos III, Ministry of Science and Innovation of Spain. Furthermore, TS (CP12/03121) and FC (CP14/00154) are recipients of a research contract from Miguel Servet Program of Instituto de Salud Carlos III-Peer Reviewe
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