نتایج جستجو برای: blood flow parameters

تعداد نتایج: 1596176  

Journal: :international clinical neurosciences journal 0
keyvan hajirayat department of biomedical engineering, north tehran branch, islamic azad university, tehran, iran seifollah gholampour deptartment of bimedical engineering, north tehran branch, islamic azad university, tehran, iran amir saeed seddighi functional neurosurgery research centre of shohada tajrish hospital, shahid beheshti university of medical sciences, tehran, iran nasser fatouraee biological fluid mechanics research laboratory, biomechanics department, biomedical engineering faculty, amirkabir university of technology, tehran

background: aneurysm is a blood-filled bulge in the wall of vessels that occurred in abdominal aortic and cerebral vessels. the dilation of artery leads to aneurysm. methods: three dimensional modelling was utilized for a patient with cerebral aneurysm and a normal subject, and additional fluid-structural interaction simulation was performed. we consider pulsatile blood velocity as inlet, and b...

Journal: :Investigative ophthalmology & visual science 2010
Gabriele Fuchsjäger-Mayrl Michael Georgopoulos Anton Hommer Günther Weigert Berthold Pemp Clemens Vass Gerhard Garhöfer Leopold Schmetterer

PURPOSE The authors have reported previously that a study population, consisting of patients with glaucoma and ocular hypertension, is characterized by an impaired association between ocular blood flow parameters and systemic blood pressure, indicative of abnormal autoregulation. Here they report on the effects of dorzolamide and timolol on ocular pressure/flow relationships to test the hypothe...

Journal: :iranian journal of fisheries science 0
a. saberi m.j. zorriehzahra h. emadi s. kakoolaki s.m.r. fatemi

in the present study, the effects of chlorella vulgaris on blood and immunological parameters of caspian salmon (salmo trutta caspius) before and after exposure to viral nervous necrosis (vnn) virus were examined. in this regard, four treatments in triplicate were chosen. groups included one control and 3treatments (t1, t2 and t3).  fish in control group, t1, t2 and t3 were fed diets supplement...

This study aimed to evaluate the in-vitro and in-vivo biological activities of newly synthesized nanochelating based silver nanoparticles (AgNPs) in mouse model. Nanochelating technology was used to design and synthesize the AgNPs. The animals studies were including the lethal dose (LD50) determination by the intraperitoneal administration in mice, and determination of liver e...

This study aimed to evaluate the in-vitro and in-vivo biological activities of newly synthesized nanochelating based silver nanoparticles (AgNPs) in mouse model. Nanochelating technology was used to design and synthesize the AgNPs. The animals studies were including the lethal dose (LD50) determination by the intraperitoneal administration in mice, and determination of liver e...

1998
Norman Hu

We report the hemodynamic parameters of stage 18, 21, 24, and 27 chick embryos (from 3 to 5 days of incubation). Dorsal aortic blood velocity and mean vitelline artery blood pressure are measured with a 20 MHz pulsed-Doppler meter and servo-null pressure system respectively. We also measure heart rate, dorsal aortic diameter and embryo weight of each developmental stage. From these data, we cal...

2005
Edward B. Clark Norman Hu

We report the hemodynamic parameters of stage 18, 21, 24, and 27 chick embryos (from 3 to 5 days of incubation). Dorsal aortic blood velocity and mean vitelline artery blood pressure are measured with a 20 MHz pulsed-Doppler meter and servo-null pressure system respectively. We also measure heart rate, dorsal aortic diameter and embryo weight of each developmental stage. From these data, we cal...

Journal: :Stroke 1987
K Shimoji Y Sato H Endoh K Taga N Fujiwara S Fukuda

To test applicability of monitoring regional spinal cord blood flow by measuring regional epidural blood flow, both were simultaneously measured by the hydrogen clearance method in response to changes in PaCO2 and mean arterial blood pressure in rats anesthetized with pentobarbital. An excellent correlation was found between regional spinal and epidural blood flow over a physiological range of ...

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