Occupational Risk Prevention in the Management of Companies in the Electricity Sector. The case of Galicia (Spain)

30-34The present work aims at analysing the awareness and prevention in the management system of companies in the electricity sector, in order to detect the main shortcomings, seeking to improve in terms of occupational risk prevention. After collecting and analyzing a sample of 180 surveys, numerous shortcomings have been detected in the sector of electrical and telecommunications installations in Galicia (Spain), including the lack of established goals and objectives in preventive matters or the absence of the use of preventive modalities

Occupational Risk Prevention in the Management of Companies in the Electricity Sector: The case of Galicia (Spain)

The present work aims at analysing the awareness and prevention in the management system of companies in the electricity sector, in order to detect the main shortcomings, seeking to improve in terms of occupational risk prevention. After collecting and analyzing a sample of 180 surveys, numerous shortcomings have been detected in the sector of electrical and telecommunications installations in Galicia (Spain), including the lack of established goals and objectives in preventive matters or the absence of the use of preventive modalities

Availability-Guaranteed Service Function Chain Provisioning with Optional Shared Backups

The dynamic provisioning of Service Function Chain (SFC) using Virtual Network Functions (VNFs) is a challenging problem, especially for availability-constrained services. The provisioning of backup resources is often used to ensure that availability requirements are fulfilled. However, the assignment of backup resources should be carefully designed to avoid resource inefficiencies as much as possible.This paper proposes the Optional Backup with Shared Path and Shared Function (OBSPSF) strategy, which aims at improving resource efficiency while fulfilling the availability requirements of SFC requests. The strategy uses optional backup provisioning to ensure that backup resources are assigned only when strictly needed (i.e., when the SFC alone does not meet the availability constraint). Moreover, OBSPSF encourages backup sharing (among both connectivity and backup VNFs) to reduce the backup resource overhead. Results show that the strategy can accommodate orders-of-magnitude more services than benchmark heuristics from the literature

Muchachos y muchachas obesas presentan peor rendimiento en tareas motoras específicas

Objetivou-se comparar o desempenho motor nas tarefas da bateria Körperkoordination Test für Kinder (KTK) de crianças com diferentes status de peso. Participaram do estudo, 350 crianças de oito a 10 anos. Investigaram-se: Índice de massa corporal (IMC), circunferência de cintura (CC), razão cintura-estatura (RCEst) e tarefas do KTK. Utilizou-se o teste qui-quadrado para verificar associações e o teste de Kruskal Wallis para comparação das pontuações das tarefas motoras entre os status de peso. Verificaramse que os meninos com sobrepeso e obesidade apresentaram piores resultados na tarefa de equilíbrio em marcha á retaguarda (p<0,001) e saltos monopedais (p<0,011), comparados aos meninos com baixo peso e eutróficos. Além disso, meninas obesas apresentaram piores resultados na tarefa de equilíbrio em marcha á retaguarda (p<0,001) comparadas ás meninas com baixo peso, peso normal e sobrepeso. Conclui-se que crianças sobrepeso e obesidade apresentaram piores desempenhos nas tarefas do KTK comparadas ás crianças eutróficas e com baixo peso.The objective of this study was to compare the motor performance in the tasks of the Körperkoordination Test für Kinder (KTK) of children with different weight status. A total of 350 children aged 8 to 10 years old participated in the study. Body mass index (BMI), waist circumference (WC), waist-to-height ratio (KST) and KTK tasks were investigated. The chi-square test was used to verify associations and the Kruskal Wallis test was used to compare motor task scores between weight status. It was verified that overweight and obese boys had worse results in the task of balance in gait at the rear (p <0.001) and single-sheeled jumps (p <0.011), compared to boys with low weight and eutrophic. In addition, obese girls presented worse results in the task of balance in gait at the rear (p <0.001) compared to the girls with low weight, normal weight and overweight. It was concluded that overweight and obese children presented worse performances in KTK tasks compared to eutrophic and low weight children.Facultad de Humanidades y Ciencias de la Educació

Muchachos y muchachas obesas presentan peor rendimiento en tareas motoras específicas

Objetivou-se comparar o desempenho motor nas tarefas da bateria Körperkoordination Test für Kinder (KTK) de crianças com diferentes status de peso. Participaram do estudo, 350 crianças de oito a 10 anos. Investigaram-se: Índice de massa corporal (IMC), circunferência de cintura (CC), razão cintura-estatura (RCEst) e tarefas do KTK. Utilizou-se o teste qui-quadrado para verificar associações e o teste de Kruskal Wallis para comparação das pontuações das tarefas motoras entre os status de peso. Verificaramse que os meninos com sobrepeso e obesidade apresentaram piores resultados na tarefa de equilíbrio em marcha á retaguarda (p<0,001) e saltos monopedais (p<0,011), comparados aos meninos com baixo peso e eutróficos. Além disso, meninas obesas apresentaram piores resultados na tarefa de equilíbrio em marcha á retaguarda (p<0,001) comparadas ás meninas com baixo peso, peso normal e sobrepeso. Conclui-se que crianças sobrepeso e obesidade apresentaram piores desempenhos nas tarefas do KTK comparadas ás crianças eutróficas e com baixo peso.The objective of this study was to compare the motor performance in the tasks of the Körperkoordination Test für Kinder (KTK) of children with different weight status. A total of 350 children aged 8 to 10 years old participated in the study. Body mass index (BMI), waist circumference (WC), waist-to-height ratio (KST) and KTK tasks were investigated. The chi-square test was used to verify associations and the Kruskal Wallis test was used to compare motor task scores between weight status. It was verified that overweight and obese boys had worse results in the task of balance in gait at the rear (p <0.001) and single-sheeled jumps (p <0.011), compared to boys with low weight and eutrophic. In addition, obese girls presented worse results in the task of balance in gait at the rear (p <0.001) compared to the girls with low weight, normal weight and overweight. It was concluded that overweight and obese children presented worse performances in KTK tasks compared to eutrophic and low weight children.Facultad de Humanidades y Ciencias de la Educació

A polyalanine peptide derived from polar fish with anti-infectious activities

Due to the growing concern about antibiotic-resistant microbial infections, increasing support has been given to new drug discovery programs. A promising alternative to counter bacterial infections includes the antimicrobial peptides (AMPs), which have emerged as model molecules for rational design strategies. Here we focused on the study of Pa-MAP 1.9, a rationally designed AMP derived from the polar fish Pleuronectes americanus. Pa-MAP 1.9 was active against Gram-negative planktonic bacteria and biofilms, without being cytotoxic to mammalian cells. By using AFM, leakage assays, CD spectroscopy and in silico tools, we found that Pa-MAP 1.9 may be acting both on intracellular targets and on the bacterial surface, also being more efficient at interacting with anionic LUVs mimicking Gram-negative bacterial surface, where this peptide adopts α-helical conformations, than cholesterol-enriched LUVs mimicking mammalian cells. Thus, as bacteria present varied physiological features that favor antibiotic-resistance, Pa-MAP 1.9 could be a promising candidate in the development of tools against infections caused by pathogenic bacteria.National Institute of Allergy and Infectious Diseases (U.S.) (R21AI098701

Rumen-protected methionine supplementation alters lipid profile of preimplantation embryo and endometrial tissue of Holstein cows

Our objective is to evaluate the effects of feeding rumen-protected Met (RPM) throughout the transition period and early lactation on the lipid profile of the preimplantation embryos and the endometrial tissue of Holstein cows. Treatments consisted of feeding a total mixed ration with top-dressed RPM (Smartamine® M, Adisseo, Alpharetta, GA, United States; MET; n = 11; RPM at a rate of 0.08% of DM: Lys:Met = 2.8:1) or not (CON; n = 9, Lys:Met = 3.5:1). Endometrial biopsies were performed at 15, 30, and 73 days in milk (DIM). Prior to the endometrial biopsy at 73 DIM, preimplantation embryos were harvested via flushing. Endometrial lipid profiles were analyzed using multiple reaction monitoring-profiling and lipid profiles of embryos were acquired using matrix assisted laser desorption/ionization mass spectrometry. Relative intensities levels were used for principal component analysis. Embryos from cows in MET had greater concentration of polyunsaturated lipids than embryos from cows in CON. The endometrial tissue samples from cows in MET had lesser concentrations of unsaturated and monounsaturated lipids at 15 DIM, and greater concentration of saturated, unsaturated (specifically diacylglycerol), and monounsaturated (primarily ceramides) lipids at 30 DIM than the endometrial tissue samples from cows in CON. In conclusion, feeding RPM during the transition period and early lactation altered specific lipid classes and lipid unsaturation level of preimplantation embryos and endometrial tissue

Alocação de recursos de Hardware em arquitetura C-RAN utilizando DPSO / Hardware resource Allocation in C-RAN Architecture Using DPSO

O aumento da demanda de dados, gerados em sua grande maioria por aplicativos de multimídia, torna o funcionamento da nova geração de redes moveis uma tarefa desafiadora. Uma das propostas para suportar esse trafego e a Cloud Radio Access Network (C-RAN), a qual centraliza o poder de processamento a fim de resolver o desbalanceamento de carga, executando a alocação recursos conforme a demanda da rede. Neste trabalho, e proposto um modelo de alocação de recursos que otimiza o balanceamento de carga a nível da BBU (Baseband Unit). O DPSO (Discrete Particle Swarm Optimization) é usado para a otimização da função objetivo. Os resultados apontam um desempenho superior desta função em comparação ao benchmarking em cenários de alta e baixa densidade de trafego na rede.  

Planck intermediate results. XXIX. All-sky dust modelling with Planck, IRAS, and WISE observations

We present all-sky modelling of the high resolution Planck, IRAS, and WISE infrared (IR) observations using the physical dust model presented by Draine and Li in 2007 (DL). We study the performance and results of this model, and discuss implications for future dust modelling. The present work extends the DL dust modelling carried out on nearby galaxies using Herschel and Spitzer data to Galactic dust emission. We employ the DL dust model to generate maps of the dust mass surface density, the optical extinction Av, and the starlight intensity parametrized by Umin. The DL model reproduces the observed spectral energy distribution (SED) satisfactorily over most of the sky, with small deviations in the inner Galactic disk and in low ecliptic latitude areas. We compare the DL optical extinction Av for the diffuse interstellar medium with optical estimates for 2 10^5 quasi-stellar objects (QSOs) observed in the Sloan digital sky survey. The DL Av estimates are larger than those determined towards QSOs by a factor of about 2, which depends on Umin. The DL fitting parameter Umin, effectively determined by the wavelength where the SED peaks, appears to trace variations in the far-IR opacity of the dust grains per unit Av, and not only in the starlight intensity. To circumvent the model deficiency, we propose an empirical renormalization of the DL Av estimate, dependent of Umin, which compensates for the systematic differences found with QSO observations. This renormalization also brings into agreement the DL Av estimates with those derived for molecular clouds from the near-IR colours of stars in the 2 micron all sky survey. The DL model and the QSOs data are used to compress the spectral information in the Planck and IRAS observations for the diffuse ISM to a family of 20 SEDs normalized per Av, parameterized by Umin, which may be used to test and empirically calibrate dust models.Comment: Final version that has appeared in A&

Planck Intermediate Results. IX. Detection of the Galactic haze with Planck

Using precise full-sky observations from Planck, and applying several methods of component separation, we identify and characterize the emission from the Galactic "haze" at microwave wavelengths. The haze is a distinct component of diffuse Galactic emission, roughly centered on the Galactic centre, and extends to |b| ~35 deg in Galactic latitude and |l| ~15 deg in longitude. By combining the Planck data with observations from the WMAP we are able to determine the spectrum of this emission to high accuracy, unhindered by the large systematic biases present in previous analyses. The derived spectrum is consistent with power-law emission with a spectral index of -2.55 +/- 0.05, thus excluding free-free emission as the source and instead favouring hard-spectrum synchrotron radiation from an electron population with a spectrum (number density per energy) dN/dE ~ E^-2.1. At Galactic latitudes |b|<30 deg, the microwave haze morphology is consistent with that of the Fermi gamma-ray "haze" or "bubbles," indicating that we have a multi-wavelength view of a distinct component of our Galaxy. Given both the very hard spectrum and the extended nature of the emission, it is highly unlikely that the haze electrons result from supernova shocks in the Galactic disk. Instead, a new mechanism for cosmic-ray acceleration in the centre of our Galaxy is implied.Comment: 15 pages, 9 figures, submitted to Astronomy and Astrophysic