نتایج جستجو برای: focused pressure pattern

تعداد نتایج: 916151  

Kingsley Osuji Lawson Ekpe,

Objective: Hypertension is a major risk factor for stroke, renal failure, and heart failure globally. This trend of complications has been seen even among our rural and urban dwellers in the tropics. This study aims at determining the prevalence and pattern of hypertension and body mass index (BMI) in six rural communities in Southern Nigeria.Methods: Adult participants, aged 18-80 years ...

Bend existence induces changes in the flow pattern, velocity profiles and water surface. In the present study, based on experimental data, first three-dimensional computational fluid dynamic (CFD) model is simulated by using Fluent two-phase (water + air) as the free surface and the volume of fluid method, to predict the two significant variables (velocity and channel bed pressure) in 90º sharp...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده علوم 1389

شتابگرهای ویک فیلد پلاسمایی نسل پیشرفته ای از شتابگرها هستند که می توانند پرتو الکترونی را تا چند صد gev/m شتاب دهی کنند. وقتی پالس لیزر از میحط پلاسما عبور کند تحت تاثیر آن میدان های الکتریکی طولی (ویک) در پلاسما تولید می شود که منجر به شتاب دهی ذرات باردار ثانویه می گردد. پلاسما می تواند میدان الکترویکی تا آستانه شکست غیر نسبیتی را تحمل کند. معادلات موج برای شاره سرد معادله پیوستگی و معادلات ...

2003
T. C. Bailey S. C. Johnson S. V. Sreenivasan J. G. Ekerdt C. G. Willson D. J. Resnick

The goal of the SFIL development program is to enable patterning of sub-100 nm features at room temperature and with minimal applied pressure. We believe the use of low viscosity materials and photopolymerization chemistry will enable SFIL to achieve the throughput required for use in the microelectronics industry. Additionally, the rigid transparent imprint template used in SFIL enables a prec...

2017
Rodolfo Mastropasqua Vincenzo Fasanella Alessandra Mastropasqua Marco Ciancaglini Luca Agnifili

The ciliary body ablation is still considered as a last resort treatment to reduce the intraocular pressure (IOP) in uncontrolled glaucoma. Several ablation techniques have been proposed over the years, all presenting a high rate of complications, nonselectivity for the target organ, and unpredictable dose-effect relationship. These drawbacks limited the application of cyclodestructive procedur...

2005
James J. Choi Mathieu Pernot Scott Small Elisa E. Konofagou

Most therapeutic agents cannot be delivered to the brain because of brain′s natural defense: the Blood-Brain Barrier (BBB). It has recently been shown that Focused Ultrasound (FUS) can produce reversible and localized BBB opening in the brain when applied in the presence of ultrasound contrast agents post-craniotomy in rabbits [1]. However, a major limitation of ultrasound in the brain is the s...

2016
Skyler J. Mooney Kairavi Shah Sharon Yeung Alison Burgess Isabelle Aubert Kullervo Hynynen

Transcranial focused ultrasound technology used to transiently open the blood-brain barrier, is capable of stimulating hippocampal neurogenesis; however, it is not yet known what aspects of the treatment are necessary for enhanced neurogenesis to occur. The present study set out to determine whether the opening of blood-brain barrier, the specific pressure amplitudes of focused ultrasound, and/...

Journal: :British heart journal 1979
R A Johnson L M Zir R W Harper R C Leinbach A M Hutter G M Pohost P C Block H K Gold

Haemodynamic changes produced by rapid atrial pacing (60 patients, 52 of whom developed angina) or in association with spontaneous angina (32 patients) were measured in 92 patients with angiographic coronary artery disease. The extent of coronary artery disease was scored by the jeopardy score system (range 0 to 12). The haemodynamic changes induced by ischaemia occurred in 3 patterns: pattern ...

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