Homemade

Institute of Technology (MIT) [193]. Molecules were represented as line drawings on a homemade display (an oscilloscope (Figure 2-122). In addition, the system had diverse peripherals with many switches and buttons which allowed the modification of the scene. The heart of the. system was the. so-called Crystal Ball" which could rotate the molecule about all three orthogonal axes. This prototype cost approximately two million US dollars. 

The following experiments describe homemade sampling devices for collecting samples in the field. 

B) Medicinal or homemade types iron-containing wines, etc... 

Table Type This is a simple flat metal sheet with slightly upturned edges and jacketed on the underside for coolant flow. For many years this was the mainstay of food processors. Table types are still widely used when production is in small batches, when considerable batch-to-batch variation occurs, for pilot investigation, and when the cost of continuous devices is unjustifiable. Slab thicknesses are usually in the range of 13 to 25 mm (V2 to 1 in). These units are homemade, with no standards available. Initial cost is low, but operating labor is high.

Actually, the very first homemade recycle reactors in 1965 at Union Carbide Corp. were of this type. In an ordinary one gallon top-agitated... 

Heede, R. (1995). Homemade Money. How to Stive Energy tind Doihrs in Your Home. Snowmass, CO Rocky Mountain Institute. 

Homemade wine often contains some vinegar. 

A press, a homemade toggle job, or a hot-stamping machine can be used to perform the cold working operation. When heat is required (usual requirement) the male forming die should be about 132 to 138°C (270 to 290°F). Pressure should be maintained for about 10 seconds. This time can be reduced if the product still retains residual molding heat or is preheated. The recommended preheating temperature is from 80 to 110 C (175 to 230°F). 

Cocktail Conceptions, which is actually Mr. Zaric and Mr. Kosmas s dining room table, set up with liquors, barware and glassware, jars of sugars and vanilla beans, homemade infusions and bowls of fruits currently in the markets in Astoria, has worked for Courvoisier, Beefeater, Mumm and Perrier Jouet Champagne, and the new Stoli Premier. 

The saponification process results in about 75 percent soap and 25 percent glycerin. In homemade soaps, the glycerin is left in, as it acts as an emollient (skin softener) and creates a nice feel. In commercial soaps, the glycerin is often removed and sold separately, sometimes showing up in skin moisturizers that remedy soap s skin-drying effects. 

Safety signs of approved types, available from laboratory supply houses and safety equipment dealers, should be posted in appropriate spots. The door leading out of the laboratory should be marked EXIT, while the door to a back room should be marked NO EXIT. The location of a fire extinguisher must be clearly marked. Signs are available for every type of hazard. Homemade signs not conforming to official standards should not be considered. 

With these criteria in mind we modified an existing homemade vacuum deposition chamber ( 0.07 m ) in order to accommodate the powder support materials. A schematic of the components critical for the deposition is shown in Figure 1. 

Manufacturers of TLC materials and accessories are well prepared to satisfy the needs for professionally performed PLC. High-quality precoated preparative plates are available from a number of eommercial sources. Alternatively, less expensive or specialty preparative plates ean be homemade in the laboratory, and loose sorbents and coating devices ean be purehased for this purpose. More-or-less-automated devices can also be purehased for band application of higher quantities of sample solutions to preparative layers. At least for some users, sophisticated densitometric and other instrumental techniques are available as nondestructive tools for preliminary detention and identification of separated compounds in order to enhance the effieiency of their isolation. The only aid still missing, and maybe the most important of all, is a comprehensive monograph on PLC that might encourage and instruct many potential users on how to fully benefit from this very versatile, efficient, relatively inexpensive, and rather easy to use isolation and purification technique. This book was planned to fill that void. 

Table 3.3 lists bulk aluminas for the preparation of homemade PLC plates for straight phase chromatography. 

A homemade combination scraper-coUector used in my laboratory can be made from a Pasteur pipet (229 mm x 7 mm OD Fisher Scientific Co., Pittsburgh, PA Catalog No. 13-678-6B) [52]. The pipet is cut with a file 60 mm from the top and 65 mm from the tip to produce a pipet that is approximately 100 mm long, which is then plugged with glass wool. The pipet tip is attached to a vacuum pump or... 

Preparation of such plates requires care and practice, and whereas they were once popular, they have now been replaced by commercial plates for most, if not all, applications. The quality of the commercial plates is good, and they have the added advantage of tolerating handling, which is often a problem in the case of homemade plates in which the layers are readily damaged. The phases are attached to the surface of the carrier material, glass, plastic, or metal by means of binders that do not affect separation but stabilize the mechanical properties of the layers in commercial plates. 

A hot press was made using a hydraulic 20 ton shop press, and two homemade aluminum heating plates. Each heating plate was drilled to accept an electric cartridge heater and a thermocouple. A temperature controller was connected to the heater and thermocouple on each heating plate. 

The mass spectrometer is a homemade radial cylindrical energy analyzer. A radial electric field is produced by an electrical potential applied to the inner and outer concentric cylindrical electrodes. The radii of the inner and outer electrodes are 18 cm and 26 cm, respectively. In order to reduce... 

While the first STM studies of electrode surfaces were performed with self-built instruments, scanning tunneling microscopes for electrochemical use are nowadays commercially available at a price that hardly justifies the effort of homemade equipment. Nevertheless, new instrumental designs are now and then discussed in the literature, which are still worthwhile to be considered for special applications. There is, however, additional equipment required for the operation of an electrochemical STM, for which homemade designs may be advantageous over commercially available ones and hence is briefly mentioned here in terms of tip preparation and isolation, the electrochemical cell, and vibration damping. 

At the same time a somewhat smaller effort has been devoted to improvising and testing homemade or field expedient devices and techniques for accomplishing similar results. 

Secondly, many of the ingredients and materials used in fabricating homemade items are so commonplace or innocuous they can be carried without arousing suspicion. The completed item itself often is more easily concealed or camouflaged. 

One homemade explosive, using nitrate and oils, will be described. 

Chlorate-sugar is one of the best of the first fire or igniter mixes. It bums very rapidly, with a yellow-white flame, and generates sufficient heat to ignite all homemade incendiaries mentioned in this handbook. 

Mix equal parts of explosive and thermate incendiary. A powdered explosive is easiest to use, and TNT may be safely crushed with a wooden implement in a wooden container. Plastic explosive or dynamite also may be used, although in this case the explosive should be placed under the thermate so that the thermate will be directed upward. The thermate can be obtained from the AN M-14 incendiary grenade or homemade as described in the section on improvised incendiaries. ... 

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