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Normal acceleration

The plasma source implantation system does not use the extraction and acceleration scheme found in traditional mass-analy2ing implanters, but rather the sample to be implanted is placed inside a plasma (Fig. 4). This ion implantation scheme evolved from work on controlled fusion devices. The sample is repetitively pulsed at high negative voltages (around 100 kV) to envelope the surface with a flux of energetic plasma ions. Because the plasma surrounds the sample, and because the ions are accelerated normal to the sample surface, plasma-source implantation occurs over the entire surface, thereby eliminating the need to manipulate nonplanar samples in front of the ion beam. In this article, ion implantation systems that implant all surfaces simultaneously are referred to as omnidirectional systems. [Pg.391]

The data about fields of application of Silics in clinics for treatment for infectious diseases are presented in Table 4. From Table 4 it is evident that the field of application of Silics is rather large and covers both intestinal infections and toxicoses which victimize infants, as well as viral hepatitis, and botulism. It is appropriate to mention here that inclusion of Silics into the complex treatment of patients suffering from salmonellosis, dysentery, and intestinal toxicoses accelerates normalization of clinic manifestations of these diseases by a factor of two and more. In the case of botulism the normalization of symptoms characteristic of lesions of the nervous system is shortened by almost 4 days. If intestinal infections are not severe, Silics can be recommended as a single therapeutic agent. In the case of a considerable diarrheal syndrome it is more expedient to use it together with rehydration substances. Inclusion of Silics into a complex of therapeutic agents for patients suffering from viral hepatitis substantially accelerates recovery rates of patients, so that their normal level of bilirubin and activity of alanine aminotranspherase are recovered within shorter periods of time. [Pg.197]

Fluid flow may be steady or unsteady, uniform or nonuniform, and it can also be laminar or turbulent, as well as one-, two-, or three-dimensional, and rotational or irrotational. One-dimensional flow of incompressible fluid in food systems occurs when the direction and magnitude of the velocity at all points are identical. In this case, flow analysis is based on the single dimension taken along the central streamline of the flow, and velocities and accelerations normal to the streamline are negligible. In such cases, average values of velocity, pressure, and elevation are considered to represent the flow as a whole. Two-dimensional flow occurs when the fluid particles of food systems move in planes or parallel planes and the streamline patterns are identical in each plane. For an ideal fluid there is no shear stress and no torque additionally, no rotational motion of fluid particles about their own mass centers exists. [Pg.183]

BM-MSC seeded hydrogels within wild-type excisional wounds and the results demonstrated that hydrogel delivery of MSCs improved cell survival following implantation compared to local injection, and that MSC-seeded hydrogels accelerated normal wound healing and are promising cell-scaffold constructs for skin regeneration. [Pg.52]

Problem 12-6. The Linear Stability of a Spherically Symmetric Fluid Interface to Radial Accelerations. The classical Rayleigh Taylor analysis that is described in Section B examines the stability of a plane interface between two fluids of different density to accelerations normal to the interface and shows that the interface is unstable or stable, depending on whether the acceleration is directed from the heavier fluid to the lighter fluid, or vice versa. In this problem, we consider the related problem of a spherically symmetric interface that is subjected to radial accelerations. This is a generalization of the problem of an expanding or contracting gas bubble that was considered in Chap. 4. [Pg.882]

Figure 7 Effects of angle of incidence on the amplification of (a) the horizontal acceleration (AF), and (b) the maximum vertical acceleration normalized with the maximum horizontal base acceleration (AV"° " ) for Ricker pulse excitation. Figure 7 Effects of angle of incidence on the amplification of (a) the horizontal acceleration (AF), and (b) the maximum vertical acceleration normalized with the maximum horizontal base acceleration (AV"° " ) for Ricker pulse excitation.
Obviously the control of CAM by the seasons is a multifactoral event. Photoperiod, thermoperiod, and hydroperiod are the most likely candidates which may affect and alter the CAM performance during the course of a year. Osmond (1978) suspects factors such as photoperiod or hydroperiod of accelerating normal developmental processes of CAM plants. Thus, effects of the above seasonal factors might act on CAM indirectly via development (see Chap. 4.4). [Pg.102]

Abnormal environmental eonditions - those plant conditions for which the equipment is designed to operate for a period of time without accelerating normal periodic tests, inspections, and maintenance schedules for that equipment. [Pg.111]

Chemical admixtures They are generally water-soluble, added mainly to control setting and early hardening of fiesh concrete, and to reduce water requirements. Chemical admixtures include accelerators, normal water reducers, superplasticizers, and retarders. The accelerators may contain calcium chloride, alkali hydroxide, calcium formate, calcium nitrate, etc. Examples of retarders are Na, Ca, or NH4 salts of lignosulfonic acids, hydroxy carboxylicacids,orderivativesofcarbohydrates.Normal water reducers may contain salts of refined lignosulfonic acids, hydroxycarboxylic acids, hydroxylated polymers, etc. Superplasticizers may contain sulfonated melamine formaldehyde, sulfonated naphthalene formaldehyde, car-boxylated synthetic polymers, etc. [Pg.144]

A. LINER IS ACCELERATED NORMAL TO EXPLOSIVE-LINER INTERFACE... [Pg.52]

Electric fields are formed around solid surfaces that have a potential on them. The locations in space that have the same potential with respect to the surface are called equipotential surfaces. When the surface is fiat or nearly so, the equipotential surfaces will be conformal with the solid surface. When the solid surface has a complex morphology, the equipotential surfaces will not be able to conform to the solid surface configuration and will smooth out the irregularities. Surfaces with closely spaced features, such as an open mesh (high transmission) grid, appear as a solid surface to the electric field. The separation between the equipotential surfaces establishes the electric field gradient. Electrons and ions are accelerated normal to the equipotential surfaces. Figure 5.4 shows some equipotential surfaces and the effects of curvature on the equipotential surfaces. The variation of field over a non-smooth surface leads to variations in the bombardment of the surfaces by ions. [Pg.169]


See other pages where Normal acceleration is mentioned: [Pg.518]    [Pg.144]    [Pg.518]    [Pg.218]    [Pg.404]    [Pg.31]    [Pg.53]    [Pg.755]    [Pg.6]    [Pg.85]    [Pg.5219]    [Pg.907]    [Pg.35]    [Pg.440]    [Pg.254]    [Pg.248]    [Pg.314]    [Pg.314]   
See also in sourсe #XX -- [ Pg.179 ]




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