This study is devoted to the analysis of physical meaning difference in results viscosity measurements obtained by using two-capillary method—carrying on same flow rate through two circular parallel capillaries different lengths but diameter. Furthermore, there other approach for short determination a value, known as “elongational viscosity,” based concept domination extension at convergent alo...

We investigate how the walls of cylindrical capillaries affect velocity rising gas bubbles various diameters. Of course, as capillary diameter increases, bubble will approach case free rising. Such systematic experiments on rise in capillaries, which ratio and is varied from one towards smaller values, can hardly be found literature. Experiments within system water/air have been conducted stagn...

Most infants with long-gap esophageal atresia receive an esophageal replacement with tissue from stomach or colon, because the native esophagus is too short for true primary repair. Tissue-engineered esophageal conducts could present an attractive alternative. In this paper, circular decellularized porcine esophageal scaffold tissues were implanted subcutaneously into Sprague-Dawley rats. Depen...

The swordfish is reputedly the fastest swimmer on Earth. The concave head and iconic sword are unique characteristics, but how they contribute to its speed is still unknown. Recent computed tomography scans revealed a poorly mineralised area near the base of the rostrum. Here we report, using magnetic resonance imaging and electron microscopy scanning, the discovery of a complex organ consistin...

2nd Century, A.D.: Galen postulated arterio-venous anastomosis. 1628: Harvey demonstrated the circulation of the blood. 1661: Malpighi saw capillaries in the lungs and in the webs of living frogs. 1667: Leeuwenhoek observed the web of the flying squirrel. 1733: Hales determined arterial blood pressure. From calculations on perfusion experiments he made deductions regarding the number of capilla...

This paper employs the volume of fluid (VOF) method to numerically investigate the effect of the width, height, and contact angles on burst frequencies of super hydrophilic and hydrophilic capillary valves in centrifugal microfluidic systems. Existing experimental results in the literature have been used to validate the implementation of the numerical method. The performance of capillary valves...

A sufficient differentiation of lymphatic capillaries from blood capillaries in conventional light microscopy still eludes researches. The endothelium and media of lymphatic capillaries are characterized by a strong 5'-nucleotidase activity, whereas blood capillaries reveal no or significantly lower activity. Alkaline phosphatase activity, on the other hand, missing in the lymphatic capillaries...

T« .HE PRINCIPAL effect of rutin when taken into the body is to restore the strength of the capillary walls when they become weakened. Rutin is a new, cheap, nonpoisonous drug that comes from buckwheat, tobacco, yellow pansies, and at least 35 other plants. Extensive clinical studies of its use in various disease conditions associated with hemorrhage or weak capillaries have demonstrated the va...

Although the pulmonary capillaries were discovered in 1661, the ultrastructure of the wall was not elucidated until 60 years ago. Electron micrographs then showed that only 0.2 μm of tissue separated the capillary endothelium from the alveolar space over much of the area. In retrospect this vanishingly small protective layer should have alerted physiologists to the potential fragility of the ca...

The pathway by which intravenously injected ferritin molecules move from the blood plasma across the capillary wall has been investigated in the muscle of the rat diaphragm. At 2 min after administration, the ferritin molecules are evenly distributed in high concentration in the blood plasma of capillaries and occur within vesicles along the blood front of the endothelium. At the 10-min time po...