Constant action

We should never forget that the alchemists were patient and laborious workers, their theories were vitally connected with their practice, and there was a constant action and reaction between their general scheme of things and many branches of what we now call chemical manufactures. We may laugh at many of their theories, and regret that much useless material was accumulated by them we may agree with Boyle (end of 17th century) when he likens the "hermetick philosophers," in their search for truth, to "the... 

Besides directly tonifying the Spleen-Qi, the moderate nature of Zhi Gan Cao is often used in formulas to reduce the side effect of harsh herbs, such as herbs that stimulate the Qi or remove food or phlegm. It turns a quick action of herbs into a steady and constant action. It is also used to harmonize herbs that move in different directions and work on different levels. The dosage of Zhi Gan Cao should be low in cases of dampness accumulation as its sweet property has the tendency to retain dampness. 

Since dampness is a Yin pathogenic factor and has a heavy, turbid and sticky nature, herbs and formulas should have a steady and constant action. Large dosage should be avoided in a long treatment course. 

Distinction between the effects of injury on protein metabolism and the effects of corticoid on protein metabolism has been made by Munro (M17, MIS) who has found a marked gain in liver nitrogen content following cortisone administration to the rat, but not after femur fracture. He also notes that cortisone has a constant action on nitrogen balance at all levels of protein intake whereas the effect of injury is obliterated by prior protein depletion. 

If p is taken to be a constant during a skid, application of Amontons law leads to a very simple relationship between the initial velocity of the vehicle and the length of the skid mark. The initial kinetic energy is mv fl, and this is to be entirely dissipated by the braking action, which amounts to a force F applied over the skid distance d. By Amontons law. 

This equation describes the additional amount of gas adsorbed into the pores due to capillary action. In this case, V is the molar volume of the gas, y its surface tension, R the gas constant, T absolute temperature and r the Kelvin radius. The distribution in the sizes of micropores may be detenninated using the Horvath-Kawazoe method [19]. If the sample has both micropores and mesopores, then the J-plot calculation may be used [20]. The J-plot is obtained by plotting the volume adsorbed against the statistical thickness of adsorbate. This thickness is derived from the surface area of a non-porous sample, and the volume of the liquified gas. 

Erosion is the deterioration of a surface by the abrasive action of solid particles in a liquid or gas, gas bubbles in a liquid, liquid droplets in a gas or due to (local) high-flow velocities. This type of attack is often accompanied by corrosion (erosion-corrosion). The most significant effect of a joint action of erosion and corrosion is the constant removal of protective films from a metal s surface. This can also be caused by liquid movement at high velocities, and will be particularly prone to occur if the solution contains solid particles that have an abrasive action. 

In the derivation we used the exact expansion for X t), but an approximate expression for the last two integrals, in which we approximate the potential derivative by a constant at Xq- The optimization of the action S with respect to all the Fourier coefficients, shows that the action is optimal when all the d are zero. These coefficients correspond to frequencies larger than if/At. Therefore, the optimal solution does not contain contributions from these modes. Elimination of the fast modes from a trajectory, which are thought to be less relevant to the long time scale behavior of a dynamical system, has been the goal of numerous previous studies. 

To appreciate the action of a drying agent of class (a), let us imagine some anhydrous copper sulphate in an evacuated vessel provided with a pressure gauge, and water is allowed to enter slowly the temperature is assumed constant at 25°. The results may be best expressed by means of a vapour pressure - composition diagram (Fig. 7, 20, 1). The initial system is represented by the point A the pressure will rise along AB until the monohydrate CuS04,H20 commences to form at B. 

The rate of any chemical re action increases with increas ing temperature Thus the value of k for a reaction is not constant but increases as the temperature increases... 

Traction is typically used to align a bone by a gende, constant pulling action. The pulling force may be transmitted to the bone through skin tapes or a metal pin through a bone. Traction may be used as a preliminary treatment, before other forms of treatment or after cast immobilization. 

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