A novel mechanism concept for a fully flexible, motordriven, cam-actuated engine valve was reported in [1]. It is capable of i) variable valve timing, ii) variable lift and iii) individual valve phasing control. To check the validity of the concept in real engine environment, engine tests were performed using a single-cylinder of a modified sixcylinder 3.8-liter production engine, with the new ...

this study aims to better understand the effect of practice schedule and feedback providing types. in two separate experiments the contextual interference effect in bandwidth and self-control feedback conditions on relative and absolute timing learning was examined. in experiment i, the effect of contextual interference using bandwidth and self-control feedback on absolute timing learning (para...

Within microfluidic technologies, the centrifugal “Lab-on-a-Disc” (LoaD) platform offers great potential for use at PoC and in low-resource settings due to its robustness ability port miniaturize ‘wet bench’ laboratory protocols. We present combination of ‘event-triggered dissolvable film valves’ with a centrifugo-pneumatic siphon structure enable control timing, through changes disc spin-speed...

High-speed fuel solenoid valves (HFSVs) are the key control elements of aero-engine vane regulators. A strong electromagnetic force generated from HFSVs is essential to achieve precise over timing and quantification for supply. In this paper, Taguchi method adopted improve HFSV’s static characteristics. First, an model HFSV was established experiments were conducted modify validate model. Effec...

We report the case of a 62-year-old woman in whom carcinoid disease had been diagnosed 6 years earlier. She subsequently developed tricuspid and pulmonary valve disease. Both valves were incompetent and mildly stenotic. The tricuspid valve required surgery; the pulmonary vaive was explored but not treated. Valve surgery in patients with carcinoid disease is discussed in light of the prognosis o...

In Part I of this article, several aspects of valve structure and function and their possible clinical relevance were discussed. We now review the clinical evolution and application for various forms of valve repair and outline some of the factors relating to the timing and choice of particular types of repair or replacement and, whenever appropriate, repair versus replacement. In addition, fut...

Patients who have valvular heart disease coming for surgery present many challenges to the anesthesiologist. Over the past 3 decades there has been a persistent improvement in our understanding of the pathophysiology of valvular heart disease and in the surgical techniques for correcting it. With the development of efficient and safe noninvasive monitoring of cardiac function, new surgical tech...

this paper addresses an experimental investigation in the hydrodynamic behavior of a modified slotted sieve tray. slotted sieve tray (push valve sieve tray) is a sieve tray that the push valves have been utilized on the tray deck to eliminate liquid gradients and non-uniformity of liquid distribution on the tray. the air-water system was used in an industrial scale experimental rig with an inte...

background : prosthetic valve endocarditis (pve) is an important cause of morbidity and mortality associated with heart valve replacement surgery. the aim of the present study was to describe the early outcome of treatment in patients with pve in a single center. methods : the data of all the episodes of pve registered at our institution between 2002 and 2007 were collected and analyzed retrosp...

Cylinder deactivation is an effective measure to reduce the fuel consumption of internal combustion engines. This paper deals with several practical aspects switching from conventional operation deactivated cylinders, i.e., gas spring closed intake and exhaust valves. The focus this lies on one particular quantity-controlled stoichiometrically-operated engine where load controlled using valve t...