Greasy

Physical Safety. Preventive conservation also involves ensuring the physical safety of objects (176). Objects should be guarded against acts of vandaHsm or damage inflicted by touching them. In many museums, greasy spots on sculpture can be seen, a result of repeated contact with bare hands. 

Od-in-water based hairdressings offer good spreading characteristics, have a less greasy feel, and are more easdy rinsed than water-in-od forms. Mineral od is found in these products, although natural and synthetic ods have been used. The typical od-in-water emulsifiers are used in preparing these emulsions. 

The term oil includes a variety of liquid or easily liquefiable, unctuous, combustible substances that are soluble in ether but not in water and that leave a greasy stain on paper and cloth. These substances can include animal, vegetable, and synthetic oils, but usually the word oil refers to a mineral oil produced from petroleum (qv). An oil that has been used or contaminated, or both, but not consumed, can often be recycled to regain a useful material, regardless of its origin. For the purposes of this article, only the recycling of used petroleum oils is considered. 

Wool is the fibrous covering from sheep (1) and is by far the most important animal fiber used in textiles. World greasy wool production was 2,688,000 tons in 1994—1995, equivalent to 1,557,000 t clean (2) (Table 1). In 1994—1995, 1000.1 x 10 sheep produced 2, 688 x 10 t of greasy wool. The average clip of 2.69 kg/sheep produces 1.56 kg/sheep of clean wool (Tables 1 and 2). 

The overall objective of research under way as of ca 1997 is to develop a system of sale by description for fine and medium wools whereby the buyer is presented only with measured data on the principal characteristics of the raw wool, as well as an assessment of the less important characteristics by an independent skilled appraiser (8). A scheme for assessing the risk of the presence of colored fiber content in greasy wool has been proposed which depends on production parameters and on the age and sex of the sheep (5). Instmmentation and computer algorithms for the measurement of style and handle... 

When a quantitative estimate of residual soil is not called for and the suitabiUty of a metal surface for further finishing needs to be assessed, the water-break test is used. The term water-break refers to the behavior of a water film on a smooth greasy surface. When the film becomes sufficiently thin by drainage, it suddenly breaks into islands or droplets between which the surface appears dry. On the other hand, when a film drains from a clean water-wettable, nongreasy surface, it becomes progressively thinner and finally disappears by evaporation without ever breaking into droplets. Such a surface is said to be free from water-break. 

The entire internal surface was covered with a layer of dark greasy deposit and slime intermixed with reddish-brown oxides (oxides were dark immediately upon removal from systems) (Figs. 3.19 and 3.20). Analysis showed tubercular contents were fairly acidic. 

Figure 4.27 Mild steel coupon removed from a rolling mill cooling tank. Note the thick greasy deposits.

Field coating of welds has always presented problems. Straw and jute with a greasy material was employed in 1910, but this later saponified in the soil. By chance the pharmacist Schade of Berlin learned of this problem and recommended the use of petroleum jelly in a bandage-like application. Hot-applied bitumen bands, as used by pipe works since 1928. proved to be most durable. Since 1930, electrical measuring methods have played an important part in research into insulation bands and pipe coverings carried out by the Gas Institute in Karlsruhe, the present-day Engier-Bunte Institute 18). 

In a dusty industrial environment, finned heaters are more liable than plain tube heaters to become blocked or coated with dust. If this dust is greasy, it will bake on the high-temperature surfaces, reducing the rate of heat transfer and in-... 

On the morning of January 22, 1972, a 44-car cut was being classified. One car, an empty hopper, was humped without incident but stopped approximately 400 m (1300 ft) short of its planned coupling point. Later, three tank cars containing propylene were humped as a unit and directed onto the same track as the empty hopper. The cars should have been slowed by the speed control system, but were not, probably because of greasy wheels. An overspeed alarm was given. The unit ran into the empty hopper at a speed of approximately 25 km/h (15 mph). 

Fette, /. fatness, greasiness, fettecht, a. insoluble in fat. fetten, v.t. oil, grease, lubricate stuff, dub (leather) fatten. 

Fett-industrie, /. fat industry. kalk, m. fat lime, -kohle, /. fat coal, coal rich in volatile matter, -kdrper, m. fatty compound, fat aliphatic compound fatty or greasy matter. kUgelchen, n. fat globule, fett-lickern, .f. (Leather) fat-liquor. -Idsend, a. fat-dissolving. 

Speck-, fatty, lardaceous. amyloid, speck-ahnlich, -artlg, a. fatty, lardaceous. Speck-glanz, m. greasy luster, -haut, /. (Physiol.) buffy coat. 

Stuppeasdure, /. stuppeic acid, stuppeaic acid. Stuppfett, n. a greasy mixture of hydrocarbons (phenanthrene, pyrene, etc.) obtained in refining stupp. 

Subsequently, the reaction mixture was stirred for 5 hours on an ice bath and was then allowed to stand overnight at -2°C. Thereafter, the reaction solution was admixed with water, the precipitate formed thereby was separated by vacuum-filtration, the filtrate was admixed with more water, and the aqueous solution was acidified with 2N hydrochloric acid. A greasy substance precipitated out which crystallized after a brief period of contact with boiling methanol. 2.6 grams (85% of theory) of 1,2,3,4-tetrahydro-2-[p-(N -cyclo-... 

Suspended Solids—Limit to 150 ppm if the solids are abrasive. Avoid film fill if solids are fibrous, greasy, fatty, or tarry. 

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