This paper is concerned with computational modeling of fluid mixing by arrays villi-like actuators. There are numerous applications such actuators motivated the motility and induced natural villi in small intestine, as microbial fuel cells swimming robots—understanding how occurs from viscous-dominated to inertia-dominated flows paramount. Here, we analyze two-dimensional actuators, where neigh...

Passive exposure to tobacco smoke causes ultrastructural changes in placental vasculature. It was endeavoured to observe under the light microscope, the endothelial cells of the capillaries and to look for microscopic changes in the vasculosyncytial membranes in the terminal villi of placentae of passive smokers exposed largely to bidi smoke. To study effect of passive smoking on placental vasc...

Chorionic villi are finger like projections, which surrounds the embryonic sac in early pregnancy and will later form the placenta. The outer layer of the chorionic villi consists of trophoblast cells. These cells are actively dividing and can be used for direct preparation or short-term culture for prenatal diagnosis of chromosomal abnormalities. We herein describe a 100% reproducible modified...

Although irradiation of the duodenum of rats inhibits mitosis in the crypts and halts the normal passage of cells up the villi, the maturation of goblet cells is not affected. The ripening of mucous elements while arrested in the crypts, where they form, instead of during their migration along the villi, results in the so called mucous change, which has hitherto been considered a form of degene...

background and objectives: the cause and pathophysiology of rheumatoid arthritis has not been fully understood and an experimental model of this disease is essential for research on the problem. in this research study, establishment and histopathological changes of chronic arthritis due to intra-articular antigen injection was used as a model of experimental rheumatoid arthritis. materials and ...

Scanning Electron Microscope (SEM) was used to examine villous structures at different parts in the small intestines of 22-week-old chickens. Duodenum revealed plate-like villi with large number of goblet cells on the duodenal epithelium. Jejunum and ileum both revealed leaf-like villi, but the amount of goblet cells was greater in the jejunum. A putative effect of villous structures on the int...

We studied anatomy and histology of different segments of the digestive tract in postnatal growing broiler chickens with regard to their location, shape, size and weight. A group of four chickens, each at day 1 (D1), days 14 (D14) and days 28 (D28), total 12, were killed, their digestive tracts were dissected and described and shape, size and weight of different segments were recorded. Samples ...

Synovial tissue from 6 normal pigs and from 16 patients undergoing arthrotomy for joint disease was examined by dissecting microscopy. Scale models were constructed of 3 human synovial specimens from photographic magnifications of serial sections. Surface bridging and subintimal cavitation were observed, particularly in tissue from patients with rheumatoid arthritis. These features suggest that...

Background and Objectives: The cause and pathophysiology of rheumatoid arthritis has not been fully understood and an experimental model of this disease is essential for research on the problem. In this research study, establishment and histopathological changes of chronic arthritis due to intra-articula...