Working stroke

High water-content fluids are used in some hydrauhc systems where work-stroke speeds are very low, eg, large freight elevators and large forging and extmsion presses. Pressures in these systems may be from 13.8—20.7 MPa (2000—3000 psi). Vertical in-line pumps with packed plungers and special axial—piston pumps are used with these fluids. 

This loss of useful working stroke will increase with the ratio of the suction and discharge absolute pressures, and the compressor efficiency will fall off. This effect is termed the volumetric efficiency [11]. Typical figures are shown in Figure 2.8. 

Smith, D. A., and Sleep, J. (2004). Mechanokinetics of rapid tension recovery in muscle The myosin working stroke is followed by a slower release of phosphate. Biophys. J. 87, 442-456. 

Lombardi, V., Piazzesi, G., Ferenczi, M. A., Thirlwell, H., Dobbie, I., and Irving, M. (1995). Elastic distortion of myosin heads and repriming of the working stroke in muscle. Nature 374, 553-555. 

Warlow CP (1984). Carotid endarterectomy does it work Stroke 15 1068-1076 Wennberg DE, Lucas FL, Birkmeyer JD et al. 

Fig. 7.2.2 Segment of Fig. 7.2.1 the mass Mn oscillates radial to the pivot S with the frequency coD yaw rate Qz d2-dn=working stroke ar, Coriolis acceleration at, radial acceleration vt, tangential speed... 

By measuring this acceleration, a signal proportional to the yaw rate is available. At a constant yaw rate, this signal is sinusoidal and the amplitude of the signal increases linear with frequency coD and working stroke R2. 

Figure 13-2. Ventricular function (Frank-Starling) curves. The abscissa can be any measure of preload—fiber length, filling pressure, pulmonary capillary wedge pressure, etc. The ordinate is a measure of useful external cardiac work—stroke volume, cardiac output, etc. In congestive heart failure, output is reduced at all fiber lengths and the heart expands because ejection fraction is decreased. As a result, the heart moves from point A to point B. Compensatory sympathetic discharge or effective treatment allows the heart to eject more blood, and the heart moves to point C on the middle curve.

Muir, K.W. and D.G. Grosset, Neuroprotection for acute stroke making clinical trials work Stroke, 1999. 30(1) ... 

Difference in linear expansions coefficients of guiding channels of the assembly and reactor core barrel is compensated by increase of the working stroke of spring block of FA cap. For connection/disconnection of AFA stainless cap and GC a simple device is used not requiring replaceable fasteners or complicated fixtures with power nut drivers. As the inspection stand is available the procedure on dismounting or mounting the AFA cap takes a minimum time. 

The choice of shearing equipment range from manual, to pneumatic, mechanical, and hydraulic operation to drive the crosshead through the work stroke. The basic function of the method of operation is to successfully move the crosshead and blade through the material to produce an acceptable cut. The shearing application usually determines the method of operation needed to achie ve production requirements. 

Abstract Actomyosin is a natural nanomachine which generates a force up to 5pN per skeletal myosin motor domain and moves at a speed of 10 jum s The working stroke per skeletal myosin motor domain per ATP hydrolysis was evaluated as at least 60 nm by Yanagida et al. (1985 Nature 316 366-369) which lead to the loose coupling model of Oosawa and Hayashi (1986 Advances in Biophysics 22 151-183). 

With presses operating at slow speed rates, i. e. lead wire- and lead pipe presses, cable presses and rod extrusion presses, the working stroke is of relatively long duration - 10 to 20 minutes not being extraordinary -so that the accumulation of pressure fluid would make no sense. For tube extrusion presses, especially those working on heavy metals and at speed rates of up to 200 mm/sec, the accumulator drive will be preferred as the direct pump drive would be very expensive on account of the high pump capacity required. 

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