Image-free real-time target tracking by single-pixel detection.

Image-based target tracking methods rely on continuous image acquisition and post-processing, which will result in low tracking efficiency. To realize real-time tracking of fast moving objects, we propose an image-free target tracking scheme based on the discrete cosine transform and single-pixel detection. Our method avoids calculating all the phase values, so the number of samples can be greatly reduced.

Multistep Heterogeneous Nucleation in Binary Mixtures of Charged Colloidal Spheres.

Nucleation plays a decisive role in determining the crystal structure and size distribution; however, understanding of the fundamentals of nucleation is quite limited. In particular, it is unclear whether a nucleus forms spontaneously from solution via a single- or multiple-step process. Here we show how a binary mixture of charged colloidal spheres nucleates heterogeneously on a flat substrate by means of Bragg microscopy, laser diffraction, and laser microscopy.

[Repair of posterior mitral valve prolapsed: comparative study of three different approaches].

Objective: To compared outcomes of robotic mitral valve repair with those of standard sternotomy, and right anterolateral thoracotomy.

Method: From August 2010 to July 2011, 70 patients with degenerative mitral valve disease and posterior leaflet prolapsed scheduled for elective isolated mitral valve repair were prospectively nonrandomized to undergo mitral valve operation by standard sternotomy (n = 30), right anterolateral thoracotomy (n = 30), or a robotic approach (n = 10). There were 49 male and 21 female patients, aging from 16 to 70 years with a mean of 53.

Complications after endovascular repair of Stanford type A (ascending) aortic dissection.

Endovascular treatment has emerged as a less traumatic alternative treatment for several diseases of the thoracic aorta. However, the complications of the endovascular management of ascending aortic dissections are still high. We present a case of two iatrogenic complications after endovascular repair (EVAR) of type A (ascending) aortic dissection.

[Association between expression of chromogranin A and myocardial fibrosis in patients with dilated cardiomyopathy].

Objective: To observe the possible correlation between expression of chromogranin A (CGA) and myocardial fibrosis and investigate the potential role of CGA in the development of myocardial fibrosis in patients with dilated cardiomyopathy (DCM).

Methods: Surgical myocardial specimen from 10 DCM patients underwent successful orthotopic cardiac transplantation, and 3 normal myocardial specimen from brain-dead organ donors were obtained. CGA-mRNA, COLI-mRNA, COLIII-mRNA and ADAMTS-1-mRNA were analyzed by real-time PCR.