Circular disks

The crystals are assumed to be circular disks. This geometry is consistent with previous thermodynamic derivations. It has the advantage of easy mathematical description. 

The floating-head cover is usually a circular disk. With an odd number of tube-side passes, an axial nozzle can be installed in such a floating-head cover. If a side nozzle is required, the circular disk is replaced by either a dished head or a channel barrel (similar to Fig. 11-36/) bolted between floating-head cover and floating-tube-sheet sldrt. 

Oii-Disk Lubrication. This method is frequently used when a drive is not suitable for splash lubrication. It is highly satisfactory for moderate and semihigh-speed drives. The chain is kept above the oil level, and a circular disk, mounted to the lower wheel or shaft, dips into the oil about in. Figure 3-42 shows relative shaft positions best suited for oil-disk lubrication. 

Turning now to global methods, the more recent developments of the method of Bernoulli are based upon a theorem of Konig, and generalizations by Hadamard. The essential theorem is sufficiently well illustrated by the following special case let/( ) be analytic (not necessarily a polynomial) over some circular disk centered at the origin, and in this... 

Calculate the radius of the cavity formed by three circular disks of radius r that lie in a dose-packed planar arrangement. Check your answer experimentally by using three compact disks and measuring the radius of the cavity that they form. 

The above problems may be alleviated by the use of a rotating hemispherical electrode (RHSE). In this geometry, the flat circular disk on the RDE is replaced with a metal hemisphere as shown in Fig. 1(a). The theory, experimental setup and methods of application to electrochemical studies are similar to those of the RDE. The advantages of the RHSE are ... 

The decolorization of Reactive Red 2 (azo dye) and Reactive Blue 4 by immobilized fungus Bjerkandera sp. strain BOL 13 was studied [56]. Birch wood was used as a carrier material and circular disks were used in the continuous rotating biological contactor. The experiment results showed the fungus to be able to decolorize mixtures of both dyes efficiently. Decolorization was found to be approximately same at 50 and 100 mg/L of dye stuff (96 and 94%, respectively). When the concentration was increased to 200 mg/L, decolorization decreased to 81%. 

In addition to a free choice of flow rate, this cell also allows use of electrodes of shapes other than a circular disk. The cell shown in Fig. 2 was designed for examining the corrosion of only the edge of a 2-mm-thick plate, which had been lasa cut. 

In passing, we should also mention one additional microstructural factor potentially impacting the overall electrode performance constriction of the ionic current in the electrolyte near the electrode/electrolyte interface. To better understand this effect, consider a circular disk electrode of diameter d immersed in a semi-infinite electrolyte of conductivity... 

Although we shall be interested primarily in diffraction by an opaque circular disk, no extra labor is entailed if the shape of the planar obstacle is unrestricted at this stage of our argument (Fig. 4.1a). It is more convenient to consider diffraction by a planar aperture, with the same shape and dimensions as the obstacle, in an otherwise opaque screen (Fig. 4.1b). If xp(P) is the value of the wave function at P when the aperture is in place, we can invoke Babinet s principle,... 

We have yet to explain why Cext = 2G is not necessarily observed. To do so it will help if we consider a specific example. The scattering amplitude for a circular disk is independent of the azimuthal angle ... 

Figure 4.8 Scattering diagram for diffraction by a circular disk.

Dielectric Constant Dissipation Factor D150- 59T 2" circular disk, 1/8" thick or 4" circular disk, 1/8" or 1/4" thick 10.24... 

The tiles are uniformly bounded, i.e. there exist two parameters u and U such that every tile 7 contains, as a subset, a closed circular disk of radius u, and is contained in a closed circular disk of radius U. 

Let Dip, P) represent a circular disk in the plane with center P and radius p. Let Aip, P) denote the patch of tiles that is the set of all those tiles of T, whose intersection with D p, P) is non-empty, together with the minimum number of additional tiles needed to make the union of the tiles of Aifi, P) a topological disk (i.e. simply connected). Write pip, P), eifi, P) and u(p, P) for the number of tiles, edges, and vertices in Afp, P). It is proved in [GrSh87a, 3.2] that, for any fixed number a, we... 

DeZubay, E. A., Flame Stability Characteristics of Circular Disks/ Westinghouse... 

One of the first observations one is likely to make when carrying out low-temperature voltammetric measurements is that the effects of solution iR drop that may have been scarcely noticeable at room temperature are suddenly alarmingly pronounced. The iR drop, of course, is governed by the cell current and the effective resistance between the working electrode and the Luggin capillary of the reference electrode. For example, the solution resistance for an embedded circular disk electrode of radius r with a distant reference electrode is given by Equation 16.13, where p is the resistivity of the solution. 

For a sample in the shape of a circular disk (Fig. 9b) having a radius R, the biaxial strain rate, e b is the following ... 

The retina extends forward to the sclera as a globe-shaped wineglass almost external to the skull. That part of the sclera devoid of retina is the pars planar, which is used as an access point for injection or for close delivery to the iris and ciliary body (ICB). When stripped from its basement membrane and opened out, the collapsed retina is a circular disk approximately 42 mm in diameter and 0.5 mm in thickness. The organization of the retina is based on a three-neuron chain (photoreceptor cell-bipolar cell-ganglion cell) and accompanying cells (horizontal, amacrine, and Muller cells)... 

For asymmetric particles several other models are available [53,90]. An example is the equation for the settling of a circular disk, settling broadside on ... 

This type of flow meter is normally used for water service, such as raw water supply and evaporator feed. The movable element is a circular disk which is attached to a central ball. A shaft is fastened to the ball and held in an inclined position by a cam or roller. The disk is mounted in a chamber which has spherical side walls and conical top and bottom surfaces. The fluid enters an opening in the spherical wall on one side of the partition and leaves through the other side. As the fluid flows through the chamber, the disk wobbles, or executes a nutating motion. Since the volume of fluid required to make the disc complete one revolution is known, the total flow through a nutating disc can be calculated by multiplying the number of disc rotations by the known volume of fluid. 

Circular disk which is attached to a central ball... 

Skin Source. A surgically-removed human skin source is used for all in vitro diffusion cell tests. Skin is obtained from 37 + 13 year-old healthy females undergoing reduction mammaplasty operations. The epidermis-stratum corneum layer is separated from full-thickness skin using published techniques (2). Briefly, the full-thickness skin is immersed in distilled water heated to 60 + 1°C for 45 seconds. The epidermal-stratum corneum layers are then peeled from the dermis. The epidermis-stratum corneum layers are then excised with a cork borer into circular disks 1.4 cm in diameter. 

C.8.a. Circular disk or rod of finite length, with axis parallel to infinitely long cylinder, pairwise-summation form... 

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