shrink fit process is a useful technique in order to introduce beneficial residual stress in compound pressure vessels. in this paper, the effects of geometrical tolerances on residual stresses have been studied for a compound shrink fitted pressure vessel, practically. three layers, which are designed based on an optimum nominal thickness and overlap dimensions and tolerances, have been fitted...

introduction: this paper addresses a method for automatic detection of blood vessels in color fundus images which utilizes two main tools: image partitioning and local radon transform. material and methods: the input images are firstly divided into overlapping windows and then the radon transform is applied to each. the maximum of the radon transform in each window corresponds to the probable a...

congenital anomalies of coronary arteries, albeit rare, may be significant contributors to angina pectoris, hemodynamic abnormalities, and sudden cardiac death. a 47-year-old man referred to us with atypical chest pain. electrocardiography demonstrated no significant ischemic changes, but cardiac troponin i test was positive. the patient underwent coronary angiography, which revealed a single c...

large intercoronary communications in the absence of obstructive coronary artery disease constitute a very rare coronary artery anomaly in which there is a readily visible connection between the 2 coronary arteries with a unidirectional or bidirectional blood flow; consequently, this anomaly may be misinterpreted as a functioning collateral vessel, indicative of an unrecognized proximal coronar...

s / 87 (2003) 199–308 295 Fig. 1. Effect of fetal calf serum (FCS) on transfection efficiency in COS-1 cells obtained with trimethylated chitosan oligomers /DNA complexes at different weight /weight ratios. Values are mean6S.D. (n53). References [1] A.B. Sieval, M. Thanou, A.F. Kotze, J.C. Verhoef, J. Brussee, H.E. Junginger, Preparation and NMR-characterization of highly substituted N-Trimethy...

This research seeks to evaluate damage on the fuel tank by an acoustic emission test when executing 20000 cycles fatigue test and thereafter burst test. Used gas cylinders in the experimental are three types as follows; one is sound cylinder, others are cylinders which contain longitudinal and transverse artificial defect. The size of artificial defect is a depth of 3 mm, width of 3 mm and leng...

Multi-category vessel detection and classification based on satellite imagery attract a lot of attention due to their significant applications in the military civilian domains. In this study, we generated new Artificial-SAR-Vessel dataset combination FUSAR-Ship SimpleCopyPaste method. We further proposed novel multi-category called CRAS-YOLO which consisted convolutional block module (CBAM), re...

With the smartization and autonomous navigation of vessels through ICT (Information Communications Technologies)—combining IoT, artificial intelligence (AI), Big Data—changes in shipbuilding industry will progress quickly; we must acquire superior technology vessel quality to partake revamped industry. This paper aims research means collecting managing big data suit a variety types communicatio...

Blood flow throughout the vascular circuit exerts a tangential force called shear stress upon all vessel walls. Under homeostatic conditions, shear stress is maintained within a narrow range. It has been shown that an alteration from this normal range of shear stress activates a biochemical signaling cascade in a process termed mechanotransduction. Although the signaling mechanism has not been ...

Artificial blood vessel walls constructed by the addition of bovine arterial endothelial cells to multilayers of rat smooth muscle cells were used as substrates for the human fibrosarcoma cell line HT1080. The extracellular matrix proteins elaborated by the smooth muscle cells were prelabeled with [3H]-proline; therefore, their subsequent digestion could be followed by the appearance of radioac...