نتایج جستجو برای: pressure loss

تعداد نتایج: 836265  

Journal: :Hypertension 1982
P Berchtold V Jörgens F W Kemmer M Berger

There is a close epidemiological association between obesity and blood pressure for all age groups, although not every obese individual becomes hypertensive. In populations without age-related increases in body weight, an elevation of blood pressure with age is not seen. Treatment of obesity by weight loss decreases blood pressure substantially; however, in a minority of patients blood pressure...

2017
Jong Hae Kim

Low central venous pressure, which indirectly reflects free hepatic venous pressure, is maintained during hepatic resection surgery to reduce intraoperative blood loss by facilitating hepatic venous outflow. However, whether the low central venous pressure protocol established for non-transplant hepatobiliary surgery should be generalized to liver transplantation is controversial because patien...

2005
PETER BERCHTOLD

There is a close epidemiological association between obesity and blood pressure for all age groups, although not every obese individual becomes hypertensive. In populations without agerelated increases in body weight, an elevation of blood pressure with age is not seen. Treatment of obesity by weight loss decreases blood pressure substantially; however, in a minority of patients blood pressure ...

2005
James R. Fox

Dynamic arterial blood pressures were recorded by micropuncture of 99 cortical surface arteries and arterioles in cats anesthetized with pentobarbital or chloralose and urediane, using the Wiederhielm servocontrolled micropipette pressure system incorporating pipette tips less than 0.5/A in diameter. During these measurements, systemic blood pressure was varied by supplemental intravenous admin...

2016
Ashima Malhotra Vikas Gupta Mary Abraham Pankaj Punetha Yashpal Bundela

STUDY DESIGN Prospective, randomised controlled, single centre study of 45 patients posted for two level lumbar fixation surgery in the prone position. PURPOSE To compare intra-abdominal pressure (IAP), mean airway pressure mean airway pressure and blood loss during the spine surgery in prone position using three different positioning systems. OVERVIEW OF LITERATURE Studies have correlated ...

Journal: :Applied and environmental microbiology 2000
R Pagán B Mackey

The relationship between membrane damage and loss of viability following pressure treatment was examined in Escherichia coli strains C9490, H1071, and NCTC 8003. These strains showed high, medium, and low resistance to pressure, respectively, in stationary phase but similar resistance to pressure in exponential phase. Loss of membrane integrity was measured as loss of osmotic responsiveness or ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1980
A R Hargens L J Bowie D Lent S Carreathers R M Peters H T Hammel P F Scholander

Macromolecules such as hemoglobin exert both kinetic and matrix effects on osmotic pressure. The kinetic osmotic pressure of sickle-cell hemoglobin is lost upon deoxygenation at physiological erythrocyte concentrations. The non-kinetic or matrix component of osmotic pressure remains relatively unchanged. Loss of thermal-osmotic activity during deoxygenation occurs throughout a hemoglobin concen...

Journal: :Management Science 2013
Martin G. Kocher Julius Pahlke Stefan T. Trautmann

We study the effects of time pressure on risky decisions for pure gain prospects, pure loss prospects, and mixed prospects involving both gains and losses. In an experiment we find that risk aversion for gains is robust under time pressure whereas risk seeking for losses turns into risk aversion under time pressure. For mixed prospects, subjects become more loss averse and more gain seeking und...

Journal: :NCHS data brief 2009
Eunice Park-Lee Christine Caffrey

Data from the National Nursing Home Survey, 2004. In 2004, about 159,000 current U.S. nursing home residents (11%) had pressure ulcers. Stage 2 pressure ulcers were the most common. Residents aged 64 years and under were more likely than older residents to have pressure ulcers. Residents of nursing homes for a year or less were more likely to have pressure ulcers than those with longer stays. O...

Journal: :مدیریت آب و آبیاری 0
سونیا زبردست دانش آموخته کارشناسی ارشد، گروه مهندسی آبیاری و زهکشی، پردیس ابوریحان، دانشگاه تهران علی رحیمی خوب دانشیار گروه مهندسی آبیاری و زهکشی، پردیس ابوریحان، دانشگاه تهران

according to the irrigation systems design standards, allowed pressure variation in lateral pipes is 20 percent. reasons for this rate selection, which since the 60's is performed, are not known. the increased changes in allowed pressure tubes to lateral pipes design, the increased sprinkling system required pressure and the increased nonuniform sprinkler distribution, so energy supply cos...

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