foam injection is becoming a standard conditioning agent when tunnelling with an earth-pressure balanced shield, resulting in an increasing interest in this technique. the technique is mostly based on empirical rules and experience. to be able to determine what foam and how may foam has to be injected for different soils, it is necessary to know the mechanical parameters of the foam-water-soil ...

A 39 year-old woman diagnosed with anomalous drainage of middle and lower right pulmonary veins to the inferior vena cava was corrected surgically by means of baffle with patch up to the left atrium. Early after the operation the patient related intolerance to small efforts and an episode of syncope. The cardiac catheterization demonstrated the presence of a severe stenosis in the inferior vena...

Surgery to replace the aortic root with a valved tube, whether mechanical or biological, remains most widely used technique for correcting diseases affecting this segment of aorta. Although valves are usually used, they expose patients risk thromboembolic complications associated anticoagulation. We report case first Tirone David operation performed at Festoc centre in Bamako. The patient was 6...

The purpose of this study was to test the hypothesis that endothelium-dependent dilation (flow-induced dilation and ACh-induced dilation) in rat soleus muscle arterioles is impaired by hindlimb unweighting (HLU). Male Sprague-Dawley rats (approximately 300 g) were exposed to HLU or weight-bearing control (Con) conditions for 14 days. Soleus first-order (1A) and second-order (2A) arterioles were...

A 10-year-old girl with Apert syndrome underwent a Le Fort III osteotomy with the positioning of internal and external distraction devices. The operation was straightforward with no intraoperative complications. Very soon after completion of surgery an anisocoria (unilateral dilation of a pupil) was noticed. This was followed by intracranial oedema which was fatal. The aetiology was dissection ...

A simple way of obtaining multivariate wavelets is the tensor product of univariate wavelets. Multivariate wavelets are of interest in both theory and application. In this paper, we study the projection method, an inverse operation in some sense to the tensor product method, to investigate various properties of multivariate refinable function vectors and multivariate multiwavelets. To illustrat...

This paper presents the design and VLSI implementation of a new ASIC which performs in real-time the morphological operations of dilation and erosion. The ASIC's architecture is based on the extension of the majority-gate algorithm for morphological operations. The ASIC was implemented using a DLM, 0.7 ìm, CMOS, N-well process and it occupies a silicon area of 14.78mm2. Its maximum speed of ope...

This paper presents a new contouring approach which comes from the idea of morphology-based interpolation algorithm.. Three main steps are carried out for the recovering of the missing contours: firstly, a so-called difference image is formed from original two slice contours; secondly, shape deformation vectors of the contour points on the upper slice are calculated; thirdly, instead of the ima...