0.596 Pb/s S, C, L-Band Transmission in a 125μm Diameter 4-Core Fiber using a Single Wideband Comb Source

We demonstrate 596.4 Tb/s over a standard cladding diameter fiber with 4 single-mode cores, using a single wideband optical comb source to provide 25 GHz spaced carriers over 120 nm range across S, C and L bands

In vitro and in vivo safety evaluation of Dipteryx alata Vogel extract

<p>Abstract</p> <p>Background</p> <p><it>Dipteryx alata </it>Vogel popularly known as "baru" is an important commercial leguminous tree species from the Brazilian Cerrado, which possess medicinal properties, besides its fruits consumption by animals and humans. The use of the "naturally occurring plants" as herbal remedies and foods mainly from leaves, seeds, flowers and roots of plants or extracts require precautions before ensuring these are safe and efficacious. The objective of this study was to evaluate the safety of <it>D. alata </it>barks extract.</p> <p>Methods</p> <p>Vegetal drugs of <it>D. alata </it>barks were submitted to quality control assays and further to the safety assays under 1) <it>in vitro </it>parameter by <it>Salmonella </it>(Ames) mutagenicity, and 2) <it>in vivo </it>parameter on the pregnancy of rats.</p> <p>Results</p> <p>The extract was non-mutagenic to any of the assessed strains TA97a, TA98, TA100 and TA102 even after metabolic activation (+S9). All <it>in vivo </it>parameters (reproductive ability evaluation, physical development of rat offsprings, and neurobehavioral development assays) showed no changes related to control group.</p> <p>Conclusion</p> <p><it>D. alata </it>barks extract is neither mutagenic by the Ames test nor toxic in the pregnancy of rats, with no physical-neurobehavioral consequences on the rat offsprings development.</p

Spatial and temporal variation in reproduction of a generalist crocodilian, Caiman crocodilus yacare, in a seasonally flooded wetland

We monitored the number of caiman (Caiman crocodilus yacare) nests in two ranches in the Brazilian Pantanal that cover an area of about 50.000 ha for 28 years (1987-2014). The number of nests was related to combinations of rainfall, water level, and number of days with temperature below 20°C, depending on the area. Most of the variation in number of nests could not be predicted by the environmental variables, but could be represented mathematically by a sine wave. We were not able to identify any external driver and suspect that the regular fluctuations may have resulted from an intrinsic population process. Presently, ranches are used as management units under the legislation for ranching Pantanal caimans. However, although some breeding females were recaptured in the area after periods of up to 21 years, most were not recaptured near nests or in general surveys of the area, suggesting that females are not strongly philopatric and that ranches do not represent isolated demographic units. Copyright: © 2015 Campos et al

Space-division multiplexed transmission in the S-band over 55 km few-mode fibers

Transmission of highly spectral efficient 24.5 GBaud quadrature phase shift keying and 16- and 64-quadrature amplitude modulated signals in the S-band between 1492 nm and 1518 nm wavelength is demonstrated over 55 km few-mode fibers. The carrier lines for S-band transmission were generated by a single wideband optical comb source with more than 120 nm optical bandwidth. While the three-mode fiber was originally optimized for C- and L-band transmission, we show that differential mode delay and mode-dependent loss show only a minor wavelength dependence within the measured S-band channels. However, the transceiver sub-system, including S-band optical amplifiers as well as a reduced optical signal-to-noise ratio of the comb source, leads to a significant Q-factor penalty for channels towards the edges of the S-band optical amplifiers below 1495 nm and above 1515 nm wavelength

Coping in aged people with Alzheimer's disease Coping en ancianos con la enfermedad de Alzheimer Coping em idosos com doença de Alzheimer

The intensity of stress experiences and elaboration of coping essentially depend on individuals' cognitive assessment. Considering the cognitive impairment of elderly persons with Alzheimer's disease (DA), this study aimed to identify their coping style. The Jalowiec Coping Inventory was applied to 60 elderly, 30 in the control group and 30 in the DA group. The results demonstrated a predominance of emotion-focused coping in the DA group and problem-focused coping in the control group, but the difference was not statistically significant (p=0.124). In addition, it was observed that individuals with better cognitive development in the DA group selected problem-focused coping strategies (p=0.0074). Thus, it seems there is a tendency to select evasive and emotional control strategies in demented elderly with worsened cognitive performance, rather than attempting to solve the problem or minimize its consequences.<br>La elaboración de estrategias de ataque a las situaciones estresantes depende de la evaluación cognitiva hecha por el individuo. Considerando el déficit cognitivo de los ancianos con la enfermedad de Alzheimer (DA), este estudio tuvo por objetivo verificar el estilo de coping predominantemente utilizado por ellos. Para esto, fue aplicado el inventario de Coping de Jalowiec en 60 ancianos, de los cuales 30 individuos eran cognitivamente saludables (grupo control) y 30 individuos con DA. Se observó un predominio del coping enfocado en la emoción en el grupo DA y enfocado en el problema en el grupo control, aunque no hubo una diferencia significativa. Así, parece haber una tendencia, en los ancianos con demencia, a elegir estrategias evasivas y de control emocional, en detrimento de la tentativa de solucionar el problema o minimizar sus consecuencias.<br>A intensidade da experiência do estresse e a elaboração do coping dependem, fundamentalmente, da avaliação cognitiva feita pelo indivíduo. Considerando o déficit cognitivo de idosos com doença de Alzheimer (DA), este estudo teve por objetivo identificar o estilo de coping utilizado por eles. Para isso, foi aplicado o Inventário de Coping de Jalowiec em 60 idosos, sendo 30 do grupo controle e 30 com DA. Os resultados evidenciaram o predomínio do coping focado na emoção no grupo DA e focado no problema no grupo controle, porém, não houve diferença significativa (p=0,124). Além disso, observou-se que, quanto melhor o desempenho cognitivo dos idosos com DA, maior a tendência em utilizar estratégias de coping focadas no problema (p=0,0074). Assim, parece haver tendência à seleção de estratégias evasivas e de controle emocional nos idosos dementes com pior desempenho cognitivo, em detrimento da tentativa de solucionar o problema ou minimizar suas conseqüências