Measurement of interstage fluid-annulus dynamical properties

The work described in this paper is part of an Electric Power Research Institute sponsored effort to improve rotor vibrational performance on power plant feed water pumps. A major objective of this effort is to reduce vibration levels by devising inter-stage sealing configurations with optimized damping capacity, realizing that the typical multi-stage centrifugal pump has several ore inter-stage fluid annuli than it has journal bearings. Also, the fluid annuli are distributed between the journal bearings where vibration levels are highest and can therefore be 'exercised' more as dampers than can the bearings. Described in this paper is a test apparatus which has been built to experimentally determine fluid-annulus dynamical coefficients for various configurations of inter-stage sealing geometry

El aula de educación física en la enseñanza primaria

En este artículo nuestra intención se concreta en determinar las condiciones idóneas que debe tener el aula de Educación Física desde el ambiente o percepción global que debe producir hasta los requisitos de los diferentes tipos de espacios de prioridad educativa en las etapas del Sistema Educativo Español, más concretamente en la Educación Primaria. Señalamos los espacios definidos en la normativa vigente y, a partir de la reflexión acerca de la repercusión del espacio en el aprendizaje, presentamos la propuesta y análisis detallado de los espacios de Educación Física en esta etapa educativa (la Sala cubierta, la Pista Polideportiva y la Zona de Juegos). Aportamos sus características idóneas tanto técnicas como funcionales (dimensiones, temperatura, pavimento, iluminación, acústica y barreras arquitectónicas) con el fin de lograr un ambiente seguro, atrayente y motivante que facilite el proceso de enseñanza-aprendizaje de los alumnos

Effects of direction-specific training interventions on physical performance and inter-limb asymmetries

This study analyzed the effects of two different training programs on functional performance and inter-limb asymmetries in basketball players. Twenty-four elite youth basketball players were randomly assigned to a training program including variable unilateral horizontal movements (VUH, n = 12) or unilateral lateral movements (VUL, n = 12). Eccentric-overload training (EOT) was performed twice a week for a six-week period. Functional performance assessment included a countermovement jump test, unilateral multidirectional jumping tests (i.e., lateral, horizontal, and vertical), a rebound jump test, a limb symmetry index, a 25 m linear sprint test, and several change of direction (COD) tests. Within-group analysis showed substantial improvements in almost all functional tests in both groups (ES = 0.35−0.89). Furthermore, almost all jumping asymmetries were improved in both groups (ES = 0.38−0.69) except for vertical jumping asymmetry in VUL (ES = −0.04). Between-group analyses showed a substantial and possibly better performance in vertical jumping asymmetry and 5 m in VUH compared to that of VUL, respectively. In contrast, lateral jumping with left (ES = 1.22) and right leg (ES = 0.49) were substantially greater in VUL than in VUH. Specific force-vector training programs induced substantial improvements in both functional performance tests and inter-limb asymmetries, although greater improvements of lateral and horizontal variables may depend on the specific force vector targeted

Fish oil rich in eicosapentaenoic acid and docosahexaenoic acid in sow diets modifies oxylipins and immune indicators in colostrum and milk

Colostrum and milk are the first nutrient sources for newborn piglets. In addition, n-3 fatty acids (FAs) and their oxygenated derivatives (oxylipins) have the capacity to modulate immune components. The aim of the current study was to include a fish oil rich in eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) in sow diets to promote an increase of anti-inflammatory molecules in colostrum and milk to benefit piglets. Thirty-six sows were randomly assigned from insemination to the end of lactation to either a control diet with animal fat (15 g/kg in gestation and 30 g/kg in lactation) or an n-3 diet in which animal fat was totally (gestation) or half (lactation) replaced by an equivalent amount of solid fish oil. Performance of sows and piglets was monitored during the study. Colostrum and milk samples were obtained after the birth of the first piglet and at weaning, respectively. From all samples (n = 18 per treatment), FAs were quantified by gas chromatography and immunoglobulins and cytokines by ELISA. Three samples per treatment were randomly selected to analyse oxylipin composition by liquid chromatography-tandem mass spectrometry. In colostrum and in milk, the n-3 FA (P = 0.020 and P < 0.001), particularly EPA (P < 0.001 and P < 0.001) and DHA (P < 0.001 and P < 0.001), and also their oxygenated derivatives were increased in samples from sows fed n-3 diet. Fish oil had no effect on immunoglobulin concentrations, but reduced tumour necrosis factor α (TNFα) (P = 0.011) and a tendency to reduce interleukin 10 (IL10) (P = 0.059) were observed in milk. In conclusion, fish oil in sow diets increased n-3 FA, particularly EPA and DHA, and their oxygenated derivatives in colostrum and milk, reducing TNFα and IL10 in milk.info:eu-repo/semantics/publishedVersio

Optimization of Rear Point Contact Geometry by Means of 3-D Numerical Simulation

Abstract In this work three-dimensional (3-D) numerical simulations, validated by the experimental measurements of a reference cell, have been performed to optimize the rear contact geometry of a PERC-type solar cell, featuring a high sheet resistance (140 Ω/sq) phosphorus-doped emitter and a front-side metallization with narrow and highly-conductive electro-plated copper lines (40 μm wide) on lowly resistive Ti contacts. The simulation results show that an optimization of the rear point contact design potentially leads to an efficiency improvement of 0.68%abs compared to the reference cell

Biomarcadores conductuales de bovinos del sistema doble propósito

The importance of behavioral and physiological biomarkers and their effects on the dairy production of dual purpose cattle was evaluated through the collection and analysis of the primary information. The database maintained by the University of the Amazon, the National University of Colombia, and SCIELO, was analyzed using the keywords: animal welfare, ethology and bovine behavior. It was observed that the activities to which the cows are subjected in dairy production lead to an inevitable stress for the animal due to the conditions of the system, negatively affecting the production, specifically the quantity and quality of milk produced (Total solids, fats and proteins). Greater knowledge regarding animal welfare will contribute to a better understanding of the behavior of dual purpose cattle in dairy production, subject to different management conditions. In this sense, ethology becomes a powerful tool that helps to understand how these animals perceive their environment.Se evaluó a través de la recopilación y análisis de la información primaria, la importancia de los biomarcadores conductuales, fisiológicos y sus efectos en la producción lechera de bovinos doble propósito. Se analizó la base de datos que mantiene la Universidad de la Amazonia, la Universidad Nacional de Colombia, y SCIELO, usando las palabras clave: bienestar animal, etología y comportamiento bovino. Se observó que las actividades a las que son sometidas las vacas en producción lechera conllevan un estrés inevitable para el animal debido a las condiciones mismas del sistema, afectando negativamente la producción, específicamente la cantidad y calidad de leche producida (Solidos totales, grasas y proteínas). Un mayor conocimiento en lo que se refiere a bienestar animal contribuirá al mejor entendimiento de la conducta del ganado doble propósito en producción lechera, sometido a diferentes condiciones de manejo. En este sentido la etología se convierte en una herramienta poderosa que ayuda a comprender cómo perciben estos animales su entorno

May Measurement Month 2017: an analysis of blood pressure screening in Spain-Europe.

May Measurement Month 2017 is a global initiative aimed at raising awareness of high blood pressure (BP) and to act as a temporary solution to the lack of screening programs worldwide, in which Spain participated actively. The primary objective was to raise awareness and increase control of BP in Spain. An opportunistic cross-sectional survey of volunteers aged ≥18 was set up in May 2017. Following the design of the International Society of Hypertension, data were collected from the 17 autonomous communities in which Spain is divided, mainly in community pharmacies, primary care centres and some hypertension (HT) units, and cardiovascular departments in hospitals. No additional training of volunteers was necessary. A total of 3849 individuals were screened. After multiple imputation, our data showed that 1923 (50.0%) had HT. In those not receiving antihypertensive medication, 17.5% were hypertensives, in individuals receiving antihypertensive medication, 33.9% had uncontrolled BP. May Measurement Month 2017 was the largest BP screening campaign undertaken in Spain. In total, 17.5% of people with HT did not receive medication. One-third of hypertensive participants receiving treatment did not have their BP controlled. These results confirm that an opportunistic screening can identify a significant number of subjects with and untreated and inadequately treated BP

t(6;20)(q13;q12) LMBRD1/CHD6

Short communication on t t(6;20)(q13;q12) LMBRD1/CHD6, with data on clinics, and the genes implicated