Top shaker

Flour and Feed Meal The roller mill is the traditional machine for grinding wheat and lye into high-grade flour. A typical mill used for this purpose is fitted with two pairs of rolls, capable of making two separate reductions. After each reduction the product is taken to a bolting machine or classifier to separate the fine flour, the coarse produc t being returned for further reduction. Feed is supphed at the top, where a vibratoiy shaker spreads it out in a thin stream across the full width of the rolls. 

Shake all the ingredients, except the Champagne, in a tall shaker filled with ice. Strain and pour into a cold martini glass. Top to the brim with Champagne. Garnish with flamed orange twist. (Hold a lighted match briefly to the twist to release its oil.)... 

In a shaker, mix all the liquid ingredients except sour mix and Coke shake and pour into a 12-ounce glass with ice. Fill the glass to /2 inch from the top with sour mix. Add Coke until the drink is the color of weak iced tea. Garnish with a lemon wedge. 

Place all the ingredients except the soda water and orange slice in a cocktail shaker filled with ice. Shake until the egg white froths. Strain into a Collins glass filled with ice. Top with soda water and garnish with the slice of orange. 

Combine the gin and blueberry puree in a cocktail shaker with ice. Shake until chilled and strain into a highball glass filled with ice. Top off with club soda. Garnish with blueberries. 

Pour the espresso into a chilled martini glass. Top with foam. Combine the liquor, creme de cacao and skim milk in cocktail shaker. Add ice and shake well. Strain the ingredients into a glass, pouring at the edge so as not to disturb the foam. Dust with nutmeg. 

Line the martini glass with sliced green apples, with the skins dusted with fleur de sel. Mix the vodka, Chambord and juice in a shaker with ice chill and strain into glass. Shake the cider till it foams and pour on top. 

Drain the aqueous acetonitrile (lower) phase into a 500-mL round-bottom flask, and save the separatory funnel for extraction. Extract the hexane-fat mixture by transferring the mixture back to the polypropylene centrifuge bottle and adding 100 mL of acetonitrile-water (4 1, v/v) solution. Balance the duplicate centrifuge bottles, and cap and shake the bottles for 10 min on the shaker. Centrifuge the second extract at 11 000 rpm for 15 min. Decant this second extract into the 250-mL separatory funnel as before. After phase separation, combine the aqueous extracts in the 500-mL round-bottom flask, and discard the top hexane-fat layer. Add 10 drops of Dow Coming Antifoam B emulsion and 3 mL of 10% aqueous Igepal CO-660 (nonionic surfactant) to the flask. 

In most cases, extraction is carried out using simple equipment such as Erlen-meyer flasks or test tubes. A sample, plus the appropriate extractant, is added to the container and shaken for a specified amount of time (see the Procedures in the next sections). A flat top or wrist shaker (see Figure 11.1) is commonly used for Erlenmeyer flasks. In some instances, an end-over-end shaker is required. 

Figure 11.1. Wrist shaker. Arms extend to the left and right having several clamps for flasks as shown. Top plate also has clamps for flasks. 

Pour the sample into the top sieve, place on a sieve shaker, and shake for 5 min. Obtain the new weight of each test sieve to the nearest 0.1 g. 

Transfer the organic (top) layer to a small shaker using a transfer pipet. Evaporate the solvent in a steam bath. 

External vibration sources might include other equipment on bench tops, such as shakers, centrifuges, or sonicators. Local construction in the area or within the building is a common, though often overlooked, source of vibration. The testers should not be near hoods or significant airflow sources. Additionally, heavy foot traffic and door slamming should be avoided. 

The Olsen method is extremely sensitive to changes in operating conditions, and unless care is taken, reproducible results will not be obtained. It is therefore imperative that all the extractions are done at the same temperature, at the same shaking speeds, and on the same shaker each time if results are to be compared between soils. For example, it is important even to adopt a standard method of filtration. The one we use is to swirl the flask briskly, add soil extract to the filter paper, and then replace the flask on the bench. Proceed in exactly the same way with the next soil replicate. If a top up is required, all flasks should be topped up in the same way. Analyze the same day if possible, although extracts may be frozen. 

Samples and Measurements. A scheme for shear measurements is shown in figure 2. Two identical polymer samples of length L, thickness h, and width W are bonded to two rigid metal mounts. The inner mount is attached to an impedance head (a combination force and acceleration sensor), which in turn is attached to a shaker. An accelerometer is attached to the top center of the outer mount. 

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