control of well drilling operations poses a challenging issue to be tackled. the loss of well control could lead to the occurrence of blowout as a severe threat, involving the risk of human lives and environmental and economic consequences. conventional proportional-integral (pi) controller is a common practice in the well control operation. the small existing margin between pore pressure and f...

abstract  introduction: hypertension is a major cause of cardiovascular disease and the prevalence of hypertension shows a linear increase with aging so that it increases by 10 percent every 10 years. this study was conducted to investigate the causes of uncontrolled blood pressure in people aged over 65 years. methods: this descriptive case-control study was conducted at isfahan amin hospital ...

OBJECTIVE Despite widespread dissemination of target values, achieving a blood pressure of <130/80 mmHg is challenging for many individuals with diabetes. The purpose of the present study was to examine temporal trends in blood pressure control in hypertensive individuals with diabetes as well as the potential for race, sex, and geographic disparities. RESEARCH DESIGN AND METHODS We analyzed ...

A number of control mechanisms are comprised within blood pressure regulation, ranging from events on the cellular level up to circulating hormones. Despite their vast number, blood pressure fluctuations occur preferably within a certain range (under physiological conditions). A specific class of dynamic systems has been extensively studied over the past several years: nonlinear coupled systems...

Compliance with medical therapy in general is often low, and compliance with blood pressure treatment is no better. Numerous studies have shown that patients frequently drop out of treatment for hypertension. Furthermore, even when patients stay in treatment, they often take their medications in a way quite dissimilar from that prescribed. Identifying noncompliant patients is important but not ...

objective: the aim of this study was to evaluate the effect of premenstrual syndrome (pms) treatment with selective serotonin reuptake inhibitor (ssri) on treatment response of refractory hypertension of the patients. method: this was a triple-blind randomized clinical trial conducted on female patients suffering from refractory hypertension and pms at the same time. we obtained informed consen...