Efeitos da atividade física sobre o comportamento alimentar em sujeitos ativos, pouco ativos e não ativos

O estudo tem por objetivo verificar se existe relação entre o comportamento alimentar de pessoas que apresentam diferentes níveis de atividade física. Participaram da pesquisa 90 mulheres de 20 a 40 anos do Vale do Taquari, divididas em três grupos, ativas, pouco ativas e não ativas, onde foram aplicados questionários e feita antropometria. Foi encontrada correlação significativa no grupo das pouco ativas ao relacionar atividade física, valores de IMC e o comportamento alimentar, mostrando que o aumento do peso dos sujeitos tem relação com características psicológico/emocionais, e o grupo das não ativas entre comportamento alimentar e o IMC, com o aumento do peso aparecem as recusar por comida ou bebida. Conclui-se que existe relação do comportamento alimentar com os grupos das pouco ativas e não ativas.This study aims to check if there is relation among dietary behavior of people who present different physical activities level. Ninety women from twenty to forty years old from Taquari Valley participated of the research, divided in three groups: active, little active and non active, where were applied questionnaires and made an anthropometry. It was found a significant correlation in the little active group to list physical active, values BMI values and the dietary behavior showing that BMI increase is related to physical and emotional characteristics, and the non active group between dietary behavior and BMI , with the BMI increase refuse food or drink. We can conclude that there is a relation of dietary behavior with the little and non active groups

Investigating Methods to Reduce Black Bear (Ursus americanus) Visitation to Anthropogenic Food Sources: Conditioned Taste Aversion and Food Removal

Conflicts between humans and black bears (Ursus americanus) jeopardize the safety of both humans and bears, especially when bears become food-conditioned to anthropogenic food sources in areas such as campgrounds. Interest in using non-lethal techniques, such as aversive conditioning, to manage such conflicts is growing. I conducted a captive experiment at The Wildlife Science Center in Minnesota and two field experiments in the La Sal Mountains, Utah, to investigate the effects of taste aversion conditioning using thiabendazole (TBZ) with a novel flavor cue and food removal on black bear food consumption and visitation to human food sources. In 2007, I conducted food trials with 6 captive black bears (3 control, 3 treatment). Controls received 1 kg baked goods scented with a peppermint-canola oil mixture and treatments received 1 kg baked goods also scented with a peppermint-canola oil mixture but mixed with 10-20 g TBZ. In the 2007 field experiment, I baited 24 field sites with 300 g of baked goods during a baseline phase for approximately 3 weeks. Half of these sites were then treated with 10 g of TBZ and camphor during a treatment phase for 4 weeks. In 2008, I baited 22 sites with 300 g of baked goods during a baseline phase for approximately 4 weeks. I then removed food and discontinued baiting at half of the sites for 4 weeks. Infrared cameras and barbed-wire hair snags were established at field sites to document bear visitation. I did not establish taste aversion in treated bears in captivity and bears fully consumed food in the majority of trials. Treating food supplies with 10 g TBZ and camphor flavor did not significantly reduce bear visitation (P = 0.615) or food consumption at field sites (P = 0.58). However, I observed a significant reduction in bear activity at sites where food was removed (P = 0.006). Potential reasons for my failure to reduce bear visitation using thiabendazole include insufficient conditioning, reluctance of bears to desist in investigating sites that previously contained untreated food, and masking of a treatment effect due to continued encounters of sites by new individuals

Semiclassical Theory for extreme events of quantum maps eigenstates

In this work, we explore the extreme events of the eigenstate intensities in the position basis of three parameter-dependent quantum maps: standard map, perturbed cat map, and kicked Harper map. In order to expand previous works, we move forward considering not only fully chaotic states but eigenstates from near-integrable and mixed regimes. Namely, we propose the kurtosis measure to quantify and assess the tail of the intensities distributions. For all addressed maps, a conspicuous result is sharp peaks in the kurtosis for specific parameters in the mixed regime. Therefore, a semiclassical expression of kurtosis is achieved through a doubled average by the position and the energy spectrum of the eigenstates, which enables us to discuss possible explanations for the phenomenon. From a semiclassical perspective, i.e., h → 0, we advocate for the stable island contribution to the peaks in the kurtosis but let other classical structures open to forward inspections. Ultimately, we discourse the quantum phases and show that they also important play a role.Neste trabalho examinamos os eventos extremos das intensidades dos autoestados na base de posição de três mapas quânticos dependentes de parâmetros: o mapa padrão, mapa do gato perturbado e o mapa quicado de Harper. A fim de ampliar trabalhos anteriores, consideramos não apenas estados totalmente caóticos mas também autoestados nos regimes quase-integráveis e mistos. Especificamente, propusemos medir a curtose para quantificar e avaliar a cauda das distribuições das intensidades. Para todos os mapas abordados, um resultado notável são picos na curtose para valores de parâmetro específicos na região mista. Portanto, uma expressão semiclássica da curtose é alcançada através de uma média dupla pela posição e pelo espectro de energia dos autoestados, o qual nos permite a discutir possíveis explicações para o fenômeno. Por uma perspectiva semiclássica, ou seja, h → 0, defendemos a contribuição das ilhas estáveis para os picos na curtose, mas deixamos outras estruturas clássicas abertas para investigações futuras. Por fim, abordamos as fases quânticas e mostramos que elas também desempenham um papel importante

Performance and loads data from a hover test of a full-scale XV-15 rotor

A hover test of a full-scale XV-15 rotor was conducted at the Outdoor Aerodynamic Research Facility at Ames Research Center. The primary objective of the test was to obtain accurate measurements of the hover performance of the original, metal-blade XV-15 rotor system. Data were acquired for rotor tip Mach numbers ranging from 0.60 to 0.73. This report presents data on rotor performance, rotor wake downwash velocities, and rotor loads

293— MOLY - Monitoring Oxygen Levels in nTOF Scintillators using Cosmic Ray Muons

High Energy Density Physics and Inertial Confinement Fusion facilities employ nTOF methods to measure neutron energies. Laser induced fusion facilities use the beam pulse as a start signal and Xylene scintillators as the stop signal to obtain the time of flight. To improve timing performance, the scintillator liquid is quenched with oxygen reducing the light production. However, oxygen reacts with the scintillator liquid causing the detector photo flash decay time to increase that reduces the energy resolution of the detector. An in-situ monitoring system which uses cosmic ray muons to determine the oxygen concentration, is being developed at SUNY Geneseo. The method uses a stack of one EJ200 plastic scintillator with the oxygenated xylene detector below it. As cosmic ray muons pass through the stacked detectors, a coincidence signal is produced by the electronics indicating an event has occurred within a few nanoseconds confirming a muon passed through the stack. The signal fit-parameters of the xylene are good indicators of the oxygen concentration. Over the summer of 2019, a proof of concept was deemed successful in measuring a difference in oxygen levels. Throughout the 2019-2020 school year, a larger detector has been built to amplify the count rate and expedite data acquisition

Scanning Tunneling Microscopy Studies of Cluster Diffusion in a Highly Mismatched System: Copper on Silver(111)

I have used low-temperature scanning tunneling microscopy to investigate cluster diffusion phenomena in both the early stages of nucleation and growth and the late stages for a highly mismatched system, Cu on Ag(111). In particular, activation energies and prefactors for cluster diffusion are measured directly by tracking cluster motion with atomic precision at multiple temperatures to determine the temperature dependence of hop rates. In contrast with larger homoepitaxial islands on Ag(111) and Cu(111), small-to-medium sized clusters (3-30 atoms) of Cu on Ag(111) display a non-monotonic size dependence of the diffusion barrier, with surprisingly low diffusion barriers for clusters containing up to ~26 atoms. Molecular dynamics simulations reveal a novel dislocation-mediated island diffusion mechanism and predict barriers that are in very good agreement with experiment. In this mechanism, the barrier to nucleate a dislocation, and hence diffuse, is sensitive to island size and shape. Experimental studies of the early stages of nucleation and growth of Cu on Ag(111) reveal that trimers, once formed, have significantly higher mobilities than either atoms or dimers. While transient, this mobility makes trimers the dominant contributor to mass transport at temperatures allowing trimer formation (T ??? 24 K). Using the STM tip, we constructed linear and compact trimers at 5 K and investigated their stabilities and diffusion parameters as a function of temperature. Analysis shows that the diffusion barrier for linear trimers is very low, 13.6 meV, compared to 65 meV for atoms, while the compact trimer is stable and immobile. The details of trimer diffusion and rotation provide insights into the intermediate diffusion steps and indicate that the large lattice mismatch plays an important role. The properties of Cu trimers on Ag(111) contrast with those reported for homoepitaxial trimers on fcc(111) surfaces. Because the diffusion phenomena for Cu trimers and other clusters on Ag(111) are largely a result of lattice mismatch, similar phenomena may exist in the early stages of nucleation and growth of other heteroepitaxial systems

An experimental investigation of two 15 percent-scale wind tunnel fan-blade designs

An experimental 3-D investigation of two fan-blade designs was conducted. The fan blades tested were 15 percent-scale models of blades to be used in the fan drive of the National Full-Scale Aerodynamic Complex at NASA Ames Research Center. NACA 65- and modified NACA 65-series sections incorporated increased thickness on the upper surface, between the leading edge and the one-half-chord position. Twist and taper were the same for both blade designs. The fan blades with modified 65-series sections were found to have an increased stall margin when they were compared with the unmodified blades