OBJECTIVES We sought to create a model of aortic insufficiency in a left heart simulator combined with 3-dimensional echocardiography and finite element modeling of the aortic valve. We examined the effects of aortic root geometry alteration on aortic insufficiency. METHODS Porcine aortic roots were analyzed on a left heart simulator before (control, n = 8) and after intervention (n = 8). Int...

0009-2614/$ see front matter 2010 Elsevier B.V. A doi:10.1016/j.cplett.2010.11.069 ⇑ Corresponding author. E-mail address: [email protected] (P. Yang). 1 Present address: University of Michigan, Ann Arbo Radial p–n junction solar cells have been predicted theoretically to have better efficiencies than their planar counterparts due to a decrease in the distance required to collect minority car...

background: this study aimed to investigate the pedicle dimension and angulation in cervicothoracic junction (ctj) using the findings of computed tomographic (ct) to help accurate insertion of pedicular screw. methods: forty three patients with high quality ct images of ctj were evaluated. pedicle width (pw), pedicle height (ph), pedicle axis length (pal), transverse angle (ta) and sagittal ang...

conclusions the severity of pathological changes in renal parenchyma, due to upjo, is a good predictor of renal function recoverability, after pyeloplasty. the orus, with drf > 35%, usually have normal (grade i) renal biopsy and might be expected to present better functional recoverability after pyeloplasty. results this study showed a linear relationship between the severity of histological ch...

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An algorithm is developed for finding a close to optimal junction tree of a given graph G. The algorithm has a worst case complexity 0 (c k n a) where a and c are constants, n is the number of vertices , and k is the size of the largest clique in a junction tree of Gi n which this size is minimized. The algorithm guaran­ tees that the logarithm of the size of the state space of the heaviest cli...

The p-n Junction The p-n junction is a homojunction between a p-type and an n-type semiconductor. It acts as a diode, which can serve in electronics as a rectifier, logic gate, voltage regulator (Zener diode), switching or tuner (varactor diode); and in optoelectronics as a light-emitting diode (LED), laser diode, photodetector, or solar cell. In a relatively simplified view of semiconductor ma...

We study analytically a current-biased topological Josephson junction supporting $\mathbb{Z}_n$ parafermions. First, we show that in an infinite-size system pair of parafermions on the can be $n$ different states; $2\pi{n}$ periodicity phase potential results significant suppression maximal current $I_m$ for insulating regime underdamped junction. Second, behaviour realistic finite-size with av...

In p-n-junction temperature sensors connected in the forwardbiased, dependence of built-in potential is important, while reverse biased sensors, it necessary to study and space-charge region width.For this case, as well for homogeneous gradient alloyed cases, widthare studied mathematical analysis presented these cases.Based on analysis, results are obtained cases where base doped at different ...

An exact solution of domain wall junction is obtained in a fourdimensional N = 1 supersymmetric U(1) × U(1)′ gauge theory with three pairs of chiral superfields which is motivated by the N = 2 SU(2) gauge theory with one flavor perturbed by an adjoint scalar mass. The solution allows us to evaluate various quantities including a new central charge Yk associated with the junction besides Zk whic...