5,626 research outputs found
Alterações renais funcionais em caprinos submetidos a infusão intravenosa de hemolisado.
Resumo: 0 presente estudo foi realizado em 32 caprinos, adultos, Sem Raça Definida (SRD), sendo 16 machos e 16 fêmeas, com propósito de constatar a existência de alteraçoes funcionais renais em caprinos submetidos à aplicaçào intravenosa de hemolisado, através de quantificação dos níveis séricos de uréia e creatinina. Constituiram-se 4 grupos, cada um composto de 8 animais, dos quais 5 foram submetidos a infusao de hemolisado e 3 permaneceram como controle. Nos animais os grupos l, II e III retiraram-se volumes sangüíneos respectivamente a 5, 10 e 15 ml/kg de peso corpóreo. Cada animal do grupo hemólise recebeu, por via intravenosa lenta, após ruptura mecânica das hemacias por congelamento, o hemolisado em igual volume ao sangue retirado. Os animais controle receberam, também por via intravenosa lenta, soluçao satine fisiológica a 0,87% em igual volume ao do sangue retirado. No grupo IV, realizou-se a sangria de 10 ml/kg de peso, e a reposição do hemolisado se fez na dose de 2,5 ml/kg de peso vivo, corn intervalos de 48 haras. Os resultados encontrados nas diferentes dosagens administradas, permitiram concluir que, ao nível tubular, houve alteraçoes funcionais, demonstradas pela exame de urina (glicosúria, hemoglobinúria e tendência e isostenúria) e que, ao nível glomerular, não houve alterações de fluxo nem de função que pudessem ser identificadas através da determinação dos níveis de uréia e creatinina sérica
GHIGLS: HI mapping at intermediate Galactic latitude using the Green Bank Telescope
This paper introduces the data cubes from GHIGLS, deep Green Bank Telescope
surveys of the 21-cm line emission of HI in 37 targeted fields at intermediate
Galactic latitude. The GHIGLS fields together cover over 1000 square degrees at
9.55' spatial resolution. The HI spectra have an effective velocity resolution
about 1.0 km/s and cover at least -450 < v < +250 km/s. GHIGLS highlights that
even at intermediate Galactic latitude the interstellar medium is very complex.
Spatial structure of the HI is quantified through power spectra of maps of the
column density, NHI. For our featured representative field, centered on the
North Ecliptic Pole, the scaling exponents in power-law representations of the
power spectra of NHI maps for low, intermediate, and high velocity gas
components (LVC, IVC, and HVC) are -2.86 +/- 0.04, -2.69 +/- 0.04, and -2.59
+/- 0.07, respectively. After Gaussian decomposition of the line profiles, NHI
maps were also made corresponding to the narrow-line and broad-line components
in the LVC range; for the narrow-line map the exponent is -1.9 +/- 0.1,
reflecting more small scale structure in the cold neutral medium (CNM). There
is evidence that filamentary structure in the HI CNM is oriented parallel to
the Galactic magnetic field. The power spectrum analysis also offers insight
into the various contributions to uncertainty in the data. The effect of 21-cm
line opacity on the GHIGLS NHI maps is estimated.Comment: Accepted for publication in The Astrophysical Journal, 2015 July 16.
32 pages, 21 figures (Fig. 10 new). Minor revisions from review, particularly
Section 8 and Appendix C; results unchanged. Additional surveys added and
made available; new Appendix B. Added descriptions of available FITS files
and links to four illustrative movies on enhanced GHIGLS archive
(www.cita.utoronto.ca/GHIGLS/
Towards Multi-class Object Detection in Unconstrained Remote Sensing Imagery
Automatic multi-class object detection in remote sensing images in
unconstrained scenarios is of high interest for several applications including
traffic monitoring and disaster management. The huge variation in object scale,
orientation, category, and complex backgrounds, as well as the different camera
sensors pose great challenges for current algorithms. In this work, we propose
a new method consisting of a novel joint image cascade and feature pyramid
network with multi-size convolution kernels to extract multi-scale strong and
weak semantic features. These features are fed into rotation-based region
proposal and region of interest networks to produce object detections. Finally,
rotational non-maximum suppression is applied to remove redundant detections.
During training, we minimize joint horizontal and oriented bounding box loss
functions, as well as a novel loss that enforces oriented boxes to be
rectangular. Our method achieves 68.16% mAP on horizontal and 72.45% mAP on
oriented bounding box detection tasks on the challenging DOTA dataset,
outperforming all published methods by a large margin (+6% and +12% absolute
improvement, respectively). Furthermore, it generalizes to two other datasets,
NWPU VHR-10 and UCAS-AOD, and achieves competitive results with the baselines
even when trained on DOTA. Our method can be deployed in multi-class object
detection applications, regardless of the image and object scales and
orientations, making it a great choice for unconstrained aerial and satellite
imagery.Comment: ACCV 201
Quantum entanglement of bound particles under free center of mass dispersion
On the basis of the full analytical solution of the overall unitary dynamics,
the time evolution of entanglement is studied in a simple bipartite model
system evolving unitarily from a pure initial state. The system consists of two
particles in one spacial dimension bound by harmonic forces and having its free
center of mass initially localized in space in a minimum uncertainty wave
packet. The existence of such initial states in which the bound particles are
not entangled is pointed out. The entanglement of the two particles is shown to
be independent of the wavepacket mean momentum, and to increase monotonically
in a time scale distinct from that of the spreading of the center of mass
wavepacket.Comment: 17 pages, 5 figure
An information-theoretic formulation of Newton's second law
From the principle of maximum entropy for a closed system in thermal
equilibrium, for the first instance a clear relation is shown to exist between
total entropy S (in terms of arrangements of particles) and the classical
expression for the force acting on a particle in a rotating frame. We determine
relationships between arrangement of particles and force in the case of the
gravitational and elastic forces.Comment: 5 page
Protocolos para extração do DNA-proviral e PCR do lentivírus caprino em sangue.
bitstream/CNPC/20248/1/cot72.pd
The universal red-giant oscillation pattern; an automated determination with CoRoT data
The CoRoT and Kepler satellites have provided thousands of red-giant
oscillation spectra. The analysis of these spectra requires efficient methods
for identifying all eigenmode parameters. The assumption of new scaling laws
allows us to construct a theoretical oscillation pattern. We then obtain a
highly precise determination of the large separation by correlating the
observed patterns with this reference. We demonstrate that this pattern is
universal and are able to unambiguously assign the eigenmode radial orders and
angular degrees. This solves one of the current outstanding problems of
asteroseismology hence allowing precise theoretical investigation of red-giant
interiors.Comment: Accepted in A&A letter
- …