Anastomoses arteriais: passado, presente e futuro

Kallás, Ibrahim Elias; Kallás, Alexandre Carvalho; Kallás, Elias

doi:10.1590/s0102-86501999000400013

Cited by 34 publications

(49 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The total intensity I maps very well resemble the emission structures visible in surveys at longer wavelengths with similar angular resolution, e.g. the Effelsberg surveys at λ21 cm (Kallas & Reich 1980;Reich et al 1997) and at λ11 cm ). The λ6 cm polarization data, however, show rather different structures compared to partly available Effelsberg λ21 cm survey data (Uyanıker et al 1999;Reich et al 2004) and are therefore of particular interest, so that we focus on them in the following.…”

Section: Analysis Of the Survey Regionsupporting

confidence: 64%

“…They were already investigated in some detail by Green (1989) using DRAO Synthesis Telescope data at 408 MHz and discussed together with infrared and H i maps. Green (1989) found that the elongated H ii region LBN 679 coincides with a large H i spur located in the Perseus arm and pointed out that it is a thermal rather than a non-thermal feature as suggested by Kallas (1983). Karr & Martin (2003) studied all three H ii regions with 1 resolution using CGPS data at 1.4 GHz (Taylor et al 2003).…”

Section: W5 ( = 137mentioning

confidence: 93%

See 1 more Smart Citation

A Sino-Germanλ6 cm polarization survey of the Galactic plane

Gao

Reich²,

Han

et al. 2010

A&A

View full text Add to dashboard Cite

Context. Linearly polarized Galactic synchrotron emission provides valuable information about the properties of the Galactic magnetic field and the interstellar magneto-ionic medium, when Faraday rotation along the line of sight is properly taken into account. Aims. We aim to survey the Galactic plane at λ6 cm including linear polarization. At such a short wavelength Faraday rotation effects are in general small and the Galactic magnetic field properties can be probed to larger distances than at long wavelengths. Methods. The Urumqi 25-m telescope is used for a sensitive λ6 cm survey in total and polarized intensities. WMAP K-band (22.8 GHz) polarization data are used to restore the absolute zero-level of the Urumqi U and Q maps by extrapolation. Results. Total intensity and polarization maps are presented for a Galactic plane region of 129 • ≤ ≤ 230 • and |b| ≤ 5 • in the anti-centre with an angular resolution of 9. 5 and an average sensitivity of 0.6 mK and 0.4 mK T B in total and polarized intensity, respectively. We briefly discuss the properties of some extended Faraday Screens detected in the λ6 cm polarization maps. Conclusions. The Sino-German λ6 cm polarization survey provides new information about the properties of the magnetic ISM. The survey also adds valuable information for discrete Galactic objects and is in particular suited to detect extended Faraday Screens with large rotation measures hosting strong regular magnetic fields.

show abstract

Section: Analysis Of the Survey Regionsupporting

confidence: 64%

Section: W5 ( = 137mentioning

confidence: 93%

A Sino-Germanλ6 cm polarization survey of the Galactic plane

Gao

Reich²,

Han

et al. 2010

A&A

View full text Add to dashboard Cite

show abstract

“…[1][2][3] In the majority of cases, surgery novices' first training in this skill is given in human beings, which can result in harm to patients and increased hospital expenses because of increased length of stay and additional procedures. 2,4,5 With the objective of reducing this harm, there has been increasing use of simulators in medical education, because they enable training at any time, reduce the risk to patients, allow the level of difficulty to be controlled, and allow training to be conducted at successively higher skill levels. 3,6 Therefore, preliminary training with simulators should be a basic step in the education of future surgeons.…”

Section: Introductionmentioning

confidence: 99%

“…3,6 Therefore, preliminary training with simulators should be a basic step in the education of future surgeons. 2,3,6 However, the elevated costs of the simulators currently available on the market have restricted this type of training to large centers. There is therefore a need to identify alternative models that are less expensive, that can reproduce the skill acquisition offered by current systems, that avoid unnecessary use of animals in experiments, and that respect current ethical principles.…”

Section: Introductionmentioning

confidence: 99%

“…There is therefore a need to identify alternative models that are less expensive, that can reproduce the skill acquisition offered by current systems, that avoid unnecessary use of animals in experiments, and that respect current ethical principles. [1][2][3][4][5][6][7] Many products of vegetable origin have similar characteristics to blood vessels (long, cylindrical, and with an internal lumen). This study was conducted to assess the feasibility of three types of vegetables for use a as a low-cost and easily-obtained model of vascular anastomosis.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Treinamento de anastomoses vasculares de baixo custo: o cirurgião vai à feira

et al. 2017

View full text Add to dashboard Cite

Vascular anastomoses are common procedures and are performed by most surgeons. Training is primarily conducted in human beings, which violates current ethical principles. This is because current training models are expensive and in short supply. This study was designed to investigate the feasibility of three vegetable models of vascular anastomosis. Five units each of scallions, green beans, and yardlong beans were used. An end-to-end anastomosis was attempted with each specimen. Anastomoses were only successful in green beans and yardlong beans. Since they are narrower, the yardlong beans are the most similar to human vessels.Keywords: surgery; medical education; training; training by simulation. ResumoAnastomoses vasculares são procedimentos comuns realizados por grande parte dos cirurgiões e cujo treinamento ocorre principalmente em seres humanos, contrariando os princípios éticos vigentes. Esse fato se deve, sobretudo, à carência e ao alto custo relacionados aos atuais modelos de treinamento. Assim, este estudo visa avaliar a viabilidade de três vegetais para a realização de anastomoses vasculares. Foram utilizadas cinco unidades de cebolinha, vagem e feijão-verde. Em cada uma tentou-se realizar uma anastomose término-terminal. Conseguiu-se a realização da anastomose apenas na vagem e no

show abstract

Galactic Plane Surveys at Low Frequencies

Taylor

2002

Symp. - Int. Astron. Union

View full text Add to dashboard Cite

Until recently, high angular resolution and high sensitivity surveys of the radio emission from the plane of our Galaxy were available only at frequencies of several GHz, where large single dish radio telescopes provide arcminute scale angular resolution. At these frequencies thermal radiation from HII regions and diffuse ionized gas comprise a major component of the Galactic emission. Advances in wide field interferometric imaging techniques now make it possible to carry out high sensitivity surveys of the Galaxy with arcminute scale angular resolution at 1.4 GHz and below. Over the past few years initial synthesis surveys have been made. More ambitious surveys that combined sensitive continuum observations with full polarimetry and images of the 3-dimensional structure of atomic hydrogen gas at pc scales are currently underway in the northern (DRAO) and southern (ATNF) hemispheres. The interstellar medium of the Galaxy contains structure on all spatial scales, and these surveys combined data from aperture synthesis telescopes and signal dish antennas to provide full spatial frequency coverage to the resolution limit. Preliminary results reveal wide-spread features and processes in the the interstellar medium that are not readily visible by other means, including, for example, unusual atomic hydrogen structures related to the vertical transfer of matter and radiation between the disk and halo of the Galaxy, Faraday rotation structures that allow study of the magnetic field and diffuse ionized component in the plane of the Galaxy, and a cold atomic phase of the neutral medium that may provide a link between global shock phenomena in the galaxy and the formation of molecular clouds.

show abstract

Anastomoses arteriais: passado, presente e futuro

Cited by 34 publications

References 24 publications

A Sino-Germanλ6 cm polarization survey of the Galactic plane

A Sino-Germanλ6 cm polarization survey of the Galactic plane

Treinamento de anastomoses vasculares de baixo custo: o cirurgião vai à feira

Galactic Plane Surveys at Low Frequencies

Contact Info

Product

Resources

About