Clam-shelling

Fig. 2. Internieshing co-iotating twin-sciew extrudei A, motoi B, geai box C, feed poit D, clam shell baiiel E, vent poit F, sciew shafts G, conveying screws H, kneading paddles 1, baiiel valve and J, bhstei rings. Courtesy of APV Chemical Machinery Inc.

Each tubercle exhibited small clam-shell marks or growth rings (Fig. 3.30). Each ring was formed by fracture at the tubercle base during growth. Ejected internal contents rapidly deposited when contacting oxygenated waters. Tubercles were hollow (Fig. 3.31). Surfaces below the... 

Figure 3.30 Scanning electron micrograph of tubercles in Fig. 3.28. Note the clam-shell growth steps formed by successive fractures at the tubercle base. Tubercle is about 200 pm in diameter. (Courtesy of National Association of Corrosion Engineers, Corrosion 91 Paper No. 84 by H. M. Herro.)...

Foamed polystyrene sheet is thermoformed into single use plates, insulated cups, fast food clam shell packages, and take home containers. 

What properties of polystyrene make it amenable to thermoforming processes to produce food packaging items such as clam shell containers ... 

Clam shells, raw material for cement, 5 467 Clanthromycin, 3 25 Clapeyron equation, 24 662-663 Clarain, 6 704, 705 Clarene, 3 383 Clarification, 22 50 bauxite, 2 352... 

A crane holding a bucket of scrap aluminum and sows (10,000 kg) was loading into a holding furnace which contained some 12,000 kg of molten aluminum. Upon opening the clam shells, an immediate explosion occurred. The furnace was cooled and most sows were recovered intact. There was no evidence of foreign material in the charge. It was considered likely that one sow had a shrinkage cavity which contained some water... 

Moderate. One sow was qected about 40 m the clam shells became unhooked and fell... 

Carbon-14 content is measured by specially designed gas proportional counters (7. Aerosol samples are first converted to CO2 by combustion in a macroscale version of the thermal evolution technique. A clam shell oven was used to heat the sample for sequential evolution of organic and elemental carbon under equivalent conditions. Due to the possibility of thermal gradients, conditions in the macroscale apparatus were adjusted to produce the same recoveries of total carbon (yg C per cm of filter area) as for the microscale apparatus. Carbon-14 data are reported as % contemporary carbon based on the 1978 1 C02 content in the atmosphere. Aldehyde data referred to in this paper were obtained by impinger sampling in dinitrophenylhydrazine/acetonitrile solution and analysis of the derivatives by HPLC with UV detection (12). Olefin measurements were made by a specially designed ozone-chemiluminescence apparatus (13) difficulties in calibration accuracy and background drift with temperature limit its use to inferences of relative reactive hydrocarbon levels. 

A - PLANAR ELECTRODE SYSTEM 8 - CLAM SHELL ELECTRODE SYSTEM C - COIL TYPE ELECTRODE... 

Or a naked pearl, Miss Muxdroozol says, after the clam shell has drifted away into the vast ocean. ... 

If there are open areas within a fossil, as there are between clam shells or inside a hollow bone, these will usually fill with sediment after burial. This sediment forms an internal mold, conforming to the details of the inside of the opening. Sometimes, if a shell has been eroded or dissolved away, this mold is the only record of an animal. An external mold is an impression of an organism left in the rock surrounding it. 

The physicochemical uniqueness of trehalose originates from the presence of an a, a-1,1-linkage, which brings about the rigid conformation with a clam, shell-like shape. Because of the conformational rigidity, trehalose has a... 

Bnilding in parallel npon the discoveries of the lowering of the molecnlarity of [Ba(tmhd)2]3,4 by intermolecnlar addition of Lewis bases (see above), and of the isolation of monomeric clam-shell oligoether alkoxides (see below), the snccessfiil incorporation of intramolecnlar stabihty, in the form of a scorpion-taiT, on to the weU-known jS-diketonate hgand backbone was achieved. The synthesis of the first example of snch a ligand, Hdmmod (9), is a straightforward Claisen condensation (eqnation 41). While this procedure currently... 

An organism s fossilized hard parts (for example, the shell of a clam), through their composition, provide clues to the environment as well. A clam shell s trace element content relates to the concentration of trace elements in the aquatic environment. The concentration in the environment is a product of environmental variables such as salinity and water temperature. So, by studying the trace element chemistry of a fossil, it may be possible to determine the approximate climatic conditions where the organism lived, as well as its latitude. 

Minowa et al. [17] at the National Institute for Resources and Environment, Japan, proposed treatment of city garbage at ten cratures lower than 200 C to "liquidize the garbage. This operation is different from conventional liquidization because the product material is not oil but a biomass slurry that can be obtained at much lower temperature. Specifically, they were able to liquidize a mixture of cabbage, steamed rice, clam shells, dried sardines, and butter en loyed as a garbage model by treating it in an autoclave. The product was a slurry, and solid conqronents were found to precipitate with time. However, when they operated at 150 C for 1 hour, the solid components could be suspended for more than several hours. They proposed that this process could be applied as an effective pretreatment for supercritical water gasification,... 

Our present study was a fundamental investigation on the feasibility of biomass liquidization. Cabbage and water hyacinth were treated in an autoclave to determine whether liquidization takes place for only biomass, i.e., in the absence of steamed rice, clam shells, dried sardines, and butter. 

SWING VALVE 11.CLAM SHELL HEATER 12.OPTICAL PYROMETER... 

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