Analysis of a test method for measuring resonant frequencies of loaded hydraulic feed lines

Analysis of test facility for measuring resonant frequencies of fluid feed line

Endometriosis: A Rare Cause of Large Bowel Obstruction.

Large bowel obstruction can result in significant morbidity and mortality, especially in cases of acute complete obstruction. There are many possible causes, the most common in adults being colorectal cancer. Endometriosis is a benign disease, and the most affected extragenital location is the bowel, especially the rectosigmoid junction. However, transmural involvement and acute occlusion are very rare events. We report an exceptional case of acute large bowel obstruction as the initial presentation of endometriosis. The differential diagnosis of colorectal carcinoma may be challenging, and this case emphasizes the need to consider intestinal endometriosis in females at a fertile age presenting with gastrointestinal symptoms and an intestinal mass causing complete large bowel obstruction.info:eu-repo/semantics/publishedVersio

Stability analysis of lumped-distributed feedback systems via open-loop Nyquist plots

Stability analysis of lumped-distributed feedback systems by open loop Nyquist plot

The pedagogy of encounter: how do zoo interpreters account for their facilitation of interspecies encounters between visitors and captive animals?

Zoo interpreters have an important role to play in enhancing the educational potential of an informal learning setting. Nonetheless, little is known about what motivates individuals to pursue a profession in zoo interpretation, or how these individuals account for their educational methods. Our study was designed to gain insight into zoo interpreters’ self-reported methods and motivations for facilitating human-animal encounters as part of their daily work routine. Semi-formal interviews were conducted with full-time interpreters at a private zoo in Ottawa, and the transcribed data was coded for emergent themes. Overall, respondents consistently accounted for their facilitation methods by referencing potential benefits to wild animals, to the human visitors, and to the interpreters themselves. This study will contribute to the scholarly body of research that analyzes interspecies interactions for the purpose of providing enhanced environmental and scientific educational opportunities for all, specially children

Initial measurements of black hole spin in GX 339-4 from Suzaku spectroscopy

We report on a deep Suzaku observation of the stellar-mass black hole GX 339-4 in outburst. A clear, strong, relativistically shaped iron emission line from the inner accretion disk is observed. The broadband disk reflection spectrum revealed is one of the most sensitive yet obtained from an accreting black hole. We fit the Suzaku spectra with a physically motivated disk reflection model, blurred by a new relativistic line function in which the black hole spin parameter is a variable. This procedure yielded a black hole spin parameter of a p. Joint modeling of these Suzaku spectra and prior XMM-Newton spectra obtained in two different 0.89 +/- 0.04 outburst phases yields a spin parameter of a = 0.93 +/- 0.01. The degree of consistency between these results suggests that disk reflection models allow for spin measurements that are not strongly biased by scattering effects. We suggest that the best value of the black hole spin parameter is a = 0.93 +/- 0.01 (statistical) +/- 0.04 (systematic). Although preliminary, these results represent the first direct measurement of nonzero spin in a stellar-mass black hole using relativistic line modeling

Influência do esterco no crescimento e no acúmulo de nutrientes em mudas de mamão havaí.

bitstream/item/59119/1/CPATU-ComTec30.pd

Qualidade da silagem pré-secada de Capim-TIFTON 85 cortado em três idades e três tempos de emurchecimento.

bitstream/item/31505/1/comunicado-220.pd

On the determination of the spin of the black hole in Cyg X-1 from X-ray reflection spectra

The spin of Cygnus X-1 is measured by fitting reflection models to Suzaku data covering the energy band 0.9-400 keV. The inner radius of the accretion disc is found to lie within 2 gravitational radii (r_g=GM/c^2) and a value for the dimensionless black hole spin is obtained of 0.97^{+0.014}_{-0.02}. This agrees with recent measurements using the continuum fitting method by Gou et al. and of the broad iron line by Duro et al. The disc inclination is measured at 23.7^{+6.7}_{-5.4} deg, which is consistent with the recent optical measurement of the binary system inclination by Orosz et al of 27+/-0.8 deg. We pay special attention to the emissivity profile caused by irradiation of the inner disc by the hard power-law source. The X-ray observations and simulations show that the index q of that profile deviates from the commonly used, Newtonian, value of 3 within 3r_g, steepening considerably within 2r_g, as expected in the strong gravity regime.Comment: 7 pages, 10 figures, MNRAS in pres