نتایج جستجو برای: capillary network

تعداد نتایج: 708712  

Journal: :Irish journal of medical science 1950
J P BAILEY

I would like to show first the glomerulus of a 92-year-old man who did not have diabetes. It is perfectly normal. I want to emphasize that in the glomerulus there is not necessarily any ageing phenomenon per se. With the electron microscope there may be a slight increase in the thickness of the basement membrane of the glomerular capillary, but it is not visible by light microscopy. In the norm...

2000
C. D. Eggleton A. Vadapalli T. K. Roy A. S. Popel

Characterizing the resistances to O2 transport from the erythrocyte to the mitochondrion is important to understanding potential transport limitations. A mathematical model is developed to accurately determine the e€ects of erythrocyte spacing (hematocrit), velocity, and capillary radius on the mass transfer coecient. Parameters of the hamster cheek pouch retractor muscle are used in the calcu...

Journal: :iranian journal of neuro surgery 0
abdolkarim rahmanian md, associate professor of neurosurgery, department of neurosurgery, shiraz university of medical sciences, shiraz, iran mohammad hossein ashraf shiraz university of medical science sayed mohammad owji shiraz university of medical science

background & importance: cavernous angiomas are typically superficial lesionscreated by anomalous vessels and found in the skin or mucosa, but intradural locations are rare especially in the spine. we report a case of the spinal intradural cavernous angiomas of the lumbar spine. case presentation: a 53-year-old man presented with a 6-month history of low back pain and bilateral radicular pain. ...

Journal: :iranian journal of pharmaceutical research 0
gabriel hancu university of medicine and pharmacy targu mures, faculty of pharmacy, department of pharmaceutical chemistry anca cârje university of medicine and pharmacy targu mures, faculty of pharmacy, department of analytical chemistry ileana iuga university of medicine and pharmacy, faculty of pharmacy, department of pharmaceutical chemistry ibolya fülöp university of medicine and pharmacy targu mures, faculty of pharmacy, department of toxicology and biofarmacy zoltán istvan szabó university of medicine and pharmacy targu mures, faculty of pharmacy, department of pharmaceutical chemistry

carvedilol is administered as a racemic mixture of the r(+)- and s(-)-enantiomers, although it was demonstrated that the two enantiomers exhibit different pharmacological effects and stereoselective pharmacokinetics. the aim of this study was the evaluation of several native and derivatized cyclodextrines as chiral selectors for the separation of carvedilol enantiomers. stereoselective interact...

Journal: :medical laboratory journal 0
joshaghani hamid reza laboratory science research center, golestan university of medical sciences, gorgan, iran parvizi ,saeid golestan university of medical sciences, gorgan, iran kalavi khodaberdi laboratory science research center, golestan university of medical sciences, gorgan, iran. behnampour naser hematology and oncology research center, golestan university of medical sciences, gorgan, iran joshaghani hadi shahid beheshti university of medical sciences, tehran, iran nader hashemi department of medical biotechnology laboratory science research center, golestan university of medical science, gorgan, iran

abstract         background and objective: normal hemoglobin (hb) is formed of a heme group and a protein group known as globin. globin is made of four polypeptide chains and in hemoglobinopathies, the structure of one of these four polypeptide chain becomes abnormal. cellulose acetate method is a common way to differentiate haemoglobinopathies. inability to identify the components of hb low co...

Journal: :Tissue engineering. Part A 2009
Rodrigo Hernández Vera Elsa Genové Lery Alvarez Salvador Borrós Roger Kamm Douglas Lauffenburger Carlos E Semino

Development of tissues in vitro with dimensions larger than 150 to 200 microm requires the presence of a functional vascular network. Therefore, we have studied capillary morphogenesis under controlled biological and biophysical conditions with the aim of promoting vascular structures in tissue constructs. We and others have previously demonstrated that physiological values of interstitial flui...

Renal hemangioma is a rare tumor which can be capillary or cavernous. There have been less than 30 renal capillary hemangioma cases reported in the English literature. Herein we will report a case of renal hemangioma which was detected in a 74-year-old man operated with the impression of urothelial carcinoma of hilum.

E. Hotta, H. Ghomi, M. Yousefi, SH. Rostami, Y. Hayashi,

A capillary plasma z-pinch as an alternative active medium of soft X-Ray lasers was studied experimentally and theoretically. The theoretical analysis was based on the self consistent solution of the so called “snow plow” model. The dynamics of pinched plasma is determined by the capillary parameters and by the time dependence of electrical current passing through it. The current time dependenc...

Journal: :Cancer research 1991
J R Less T C Skalak E M Sevick R K Jain

The objective of this work was to introduce a tumor vessel classification scheme and to provide the first quantitative measurements of vessel branching patterns and the related vascular dimensions in a mammary carcinoma. Mammary adenocarcinoma R3230AC tumors, grown in the rat ovarian tissue-isolated tumor preparation, were infused with Batson's No. 17 polymer and maintained at an intravascular ...

Journal: :American journal of physiology. Heart and circulatory physiology 2004
Pedro Cabrales Amy G Tsai Marcos Intaglietta

Blood losses are usually corrected initially by the restitution of volume with plasma expanders and subsequently by the restoration of oxygen-carrying capacity using either a blood transfusion or possibly, in the near future, oxygen-carrying plasma expanders. The present study was carried out to test the hypothesis that high-plasma viscosity hemodilution maintains perfused functional capillary ...

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