Results: It is demonstrated that higher compression pressure over the calf without increasing the pressure during muscle relaxation is essential to increase the ejection fraction of the calf pump. This may be achieved by applying stiff Velcro-bands or patches around the calf which do not give way when the muscles contract. . A pressure gradient from distal to proximal may be neglected and even ...

Background and Objective: Asthma is the most common chronic disease of childhood. The disease is caused by a temporary blockage of airflow due to chronic inflammation of the airways . One of the conditions that often occur with asthma and exacerbate disease, is gastroesophageal reflux. The aim of this study is to evaluate the role of acid suppressing therapy in patients with refractory asthma...

To investigate alternative mechanisms generating artificial circulation during cardiopulmonary resuscitation (CPR), an electrical model of the circulation was developed. Heart and blood vessels were modeled as resistive-capacitive networks; pressures in the chest, abdomen, and vascular compartments as voltages; blood flow as electric current; blood inertia as inductance; and the cardiac and ven...

background and objective: asthma is the most common chronic disease of childhood. the disease is caused by a temporary blockage of airflow due to chronic inflammation of the airways . one of the conditions that often occur with asthma and exacerbate disease, is gastroesophageal reflux. the aim of this study is to evaluate the role of acid suppressing therapy in patients with refractory asthma. ...

BACKGROUND A valveless pump generates a unidirectional net flow of fluid around a closed loop of soft viscoelastic tubing that is rhythmically compressed at one point. The tubing must have at least two sections with two different stiffnesses. When a short segment of the tube is squeezed asymmetrically at certain frequencies, net flow of fluid around the loop can occur without valves. METHODS ...

Abstract Mechanisms that lead to different quantities of hydrocarbon accumulation in complex fault blocks are a major subject impacts further development plans oil and gas fields. To better understand such mechanisms, activity has been interpreted along with existing electron micrographs from the zone, petrophysical data, occurrence seismic pump. This enabled us investigate controlling mechanis...

We investigated the carrier-envelope phase (CEP) stability of hollow-fiber compression for high-energy few-cycle pulse generation. Saturation of the output pulse energy is observed at 0.6 mJ for a 260 μm inner-diameter, 1 m long fiber, statically filled with neon. The pressure is adjusted to achieve output spectra supporting sub-4-fs pulses. The maximum output pulse energy can be increased to 0...

In this study, a new metal hydride heat pump system driven by an electrochemical compressor was proposed.The system uses the electrochemical compressor to generate absorption heating and desorption cooling in two identical LaNi5 reactors operating at different pressure levels. A thermodynamic model was developed to predict the system performance in terms of various parameters. Modeling shows EC...