منابع مشابه
Saddle embolus of the aortic bifurcation treated by embolectomy.
Sudden occlusion of the aorta usually occurs at its bifurcation and is due to lodgement of an embolus. A blood clot sufficiently large to straddle the aorta usually comes from the atrium in a case of mitral stenosis. The importance of this aetiological factor was stressed by Banowitch and Ira (1928). Hermann et al. (1943) discussed the clinical manifestations and treatment of this condition. By...
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Slowly varying conservative one-degree of freedom Hamiltonian systems are analyzed in the case of a saddle-center bifurcation. Away from unperturbed homoclinic orbits, strongly nonlinear oscillations are obtained using the method of averaging. A long sequence of nearly homoclinic orbits is matched to the strongly nonlinear oscillations before and after the slow passage. Usually solutions pass t...
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We consider an abstract equation F (λ, u) = 0 with one parameter λ, where F ∈ C(R × X,Y ), p ≥ 2 is a nonlinear differentiable mapping, and X,Y are Banach spaces. We apply Lyapunov-Schmidt procedure and Morse Lemma to obtain a “double” saddle-node bifurcation theorem near a degenerate point with a two-dimensional kernel. It is shown that the solution set of the equation is the union of two para...
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Many power engineering systems have dynamic state variables which can encounter constraints or limits affecting system stability. Voltage collapse is an instability associated with the occurrence of a saddle node bifurcation in the equations which model the electric power system. We investigate the effect of constraints on voltage collapse by studying the effect of constraining state variables ...
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Laparoscopic gastric bypass is becoming a frequently performed bariatric operation for patients with obesity. However, bariatric surgery has inherent risks and complications, which are further potentiated by the high risk nature of bariatric patients. These complications can be either site specific i.e. anastomotic leaks, or systemic i.e. venous thromboembolism, however they can intimately rela...
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ژورنال
عنوان ژورنال: Cureus
سال: 2019
ISSN: 2168-8184
DOI: 10.7759/cureus.4752