Deep slot

Fig. 14 shows the equipment used. The diameter of the well in the lower part of the device was 6 mm, the same as the width of the 0.1-mm-deep slot in the upper part. Thus, the fluid was directed over the surface of the gel. The well was 4 mm from the end of the device. 

A staggered-tooth side-and-face cutter, also having teeth on the periphery and on both sides, is designed for deep-slotting operations. In order to reduce chatter and provide maximum chip clearance, the teeth are alternately right-hand and left-hand helix, and each alternate side tooth is removed. Fig. 11.8(d). Staggered-tooth cutters are available in the same sizes as the plain side-and-face type. 

Ability to measure deep slots and pockets Insensitivity to colour or transparency objects by the probe... 

The rotor is squirrel cage with short-circuited copper rings at the ends. Here also, to vary the starting characteristics of the motor, the skin effect is used by providing deep bars, flat bars, tapered bars or other types of slots (discussed in Section 2.3). 

In certain cases, where the motor is too large and it is idle for a long period before it is installed and electrically connected (the space heaters are therefore OFF) even these heaters may not be sufficient to absorb moisture which might have condensed deep in the slots, unless, of course, the heaters are kept ON for a considerably long period. In such cases, it is advisable to heat the motor by methods 1 and 2 in addition to using the built-in heaters, until the insulation level of the windings reaches the required level. Once the motor has been installed, these space heaters, when provided in the windings, are switched ON automatically as soon as the motor is idle, and thus eliminate deep moisture condensation. 

The impulse test is basically an in-house coil insulation withstand test for surge voltages and forms a part of the test requirement for HT machines with resin-rich formed coils of 2.4 kV and above. Once the machine is assembled, such a test is unnecessary, as it may not be able to reveal deficiencies, if any, in the insulation of the coils deep inside the slots. Moreover, if a failure is noticed on the assembled machine, there is no option but to scrap the whole winding. 

The burner head itself is interesting. The flame must be wide (for a long pathlength), but does not have to be deep. In other words, the burner has a long slot cut in it (5 or 10 cm long) to shape the flame in a wide but shallow contour. Typically, the flame is 10 cm wide for air-acetylene and 5 cm wide for N20-acetylene. See Figure 9.9. 

A. Apparatus. The reduction is carried out in a 400-ml. beaker. The anode, a cylinder of sheet lead 3 in. in height and 2.25 in. in diameter, rests on the bottom of the beaker. Clamped inside the anode and extending almost to the bottom of the beaker is the catholyte chamber, a porous cup (Note 1) 5 in. deep and 1.75 in. in diameter. Clamped securely inside the cup and about 0.25 in. above its inside bottom surface is the cathode, a cylinder of 25-gauge sheet copper 6 in. long and 1.25 in. in diameter. It is provided with a row of seven vertical slots 0.25 in. wide and 1.25 in. long, evenly spaced around its circumference the lower ends... 

J.2.4 A slot measuring 22mm wide x 46mm deep is machined in one side of both the upper section and the base section such that when the pressure vessel assembly is lowered, firing plug end first, into the box support, the side-arm is accommodated in this slot. Packing pieces of steel 30mm wide and 6mm thick are welded to the lower... 

Fig. 1.3. Top of H2S04-making ( absorption ) tower, courtesy Monsanto Enviro-Chem Systems, Inc. www.enviro-chem.com The tower is packed with ceramic saddles. 98.5 mass% H2S04, 1.5 mass% H20 sulfuric acid is distributed uniformly across this packed bed. Distributor headers and downcomer pipes are shown. The acid flows through slots in the downcomers down across the bed (see buried downcomers below the right distributor). It descends around the saddles while S03-rich gas ascends, giving excellent gas-liquid contact. The result is efficient H2S04 production by Reaction (1.2). A tower is 7 m diameter. Its packed bed is 4 m deep. About 25 m3 of acid descends per minute while 3000 Nm3 of gas ascends per minute.

Four 1 inch deep hacksaw cuts are mqde in each end of the tube. This witi produce 8 evenly spaced slots, 1 Inch deep. Bevel the inside edgea of both ends of the tube with e round file or sandpaper. Place a hose clamp on each end of the tube end screw down flngertight. 

Note that the concrete is placed with a slot cast into it, back about three brick from the edge of the trench or pit and running the length of the trench or pit, parallel to it. The pit is wide and deep enough to accommodate two brick standing soldier course-one with the narrowest dimension and one with the width dimension parallel to the trench wall. The depth may be the full length of the brick less the floor thickness, if desired, or it may be less than this, but not less than 3 in. If less than the full length of the brick, obviously the brick will... 

The three initial wells were drilled using a 15-cm diameter air-hammer and odex casing that was removed as the weUs were constmcted. Basalt was encountered at a depth of about 9.1 m below land surface at all wells, static water levels he at about 15.2 m below land surface, and the wells are from 21.3 to 22.9 m deep. The wells were constmcted of 5-cm PVC casing, and PVC screen with 0.5-cm machine slots was emplaced in the bottom 3 m of the borehole. Sand pack was emplaced from 1.5 to 4.6 m above the screen and the remainder of the borehole was fiUed with bentonite grout. Preliminary injection and sampling using a submersible pump, capable of... 

Deep-well pumps of the bucket type are designed for use on non-flowing wells where the water does not stand within suction distance. Two methods are employed In the plain tube well (Fig. 6) the well pipe with open ends is sunk to the proper depth where a sufficient water-bearing stratum is penetrated. The strainer A is then lowered to bottom of the well and the well pipe drawn back far enough to expose the slotted portion. The working barrel B is then lowered into the gum packer on top of strainer and tapped firmly into place. The top of the well pipe is provided with a tee for discharge connection. The... 

If we leave aside these variables, we can fit the dilferent types of peels into their appropriate slots. This is just for the beauty of the exercise however, as the variables stiU need to be taken into account. It is clearly possible to perform a superficial or medium peel using phenol. But, given the inherent toxicity of phenol, what would be the point What is more, 70% unbuffered glycolic acid that is left for 10-15 minutes on a thin, sensitive skin that has been prepared with retinoic acid can result in a cosmetic disaster. It is possible to carry out good-quality, deep peels with TCA, but the risks can be greater than if phenol is used correctly. 

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