Lamp shells

Brachiopoda Lamp shells Marine, most resemble clams... 

Lighting industry Street lighting Lamp shells, parabolic workpieces... 

Di- and triacylglycerols (mainly unsaturated), oxidized triacylglycerols [25] Olive oil Coptic oil lamp shells, fourth to tenth century a.d. APCI operating in positive-ion mode, ion trap... 

The first high-intensity sodium lamp was introduced in Europe in 1931. Figure 9.26 shows a schematic view of a sodium lamp it comprises a glass shell containing sodium vapour at low pressure, metal electrodes to generate a current, and neon gas. The pressure inside the tube is at a relatively low pressure of 30 Pa, so some of the sodium evaporates to become a vapour. The inner side of the lamp is coated with the remainder of the metallic sodium as a thin film. 

Take common carbonated alkali, or the potassa Or soda of commerce, or ammonia, or some other alkaline compound, and mix it with rssinous matter,—as shell-lac or conimoo resin,—in about equal proportions than add water according to the required strength of the solution, and boil the whole until the resinous substance, or tho greater portion of it, has dissolved next mix the necessary quantity of line lamp-black with this solution. A black liquid will thus be produced, which may be mixed with other suitable colored solutions, to form an indelible ink. Such tinctorial matter as is soluble in alkali, will best assimilate with this composition. 

Cu. 70% Zn. 29-plus. P. 0.07% maximum Fe, 0.05 maximum density 8.53 gW mp 954 C AT. 427-760 C HWT. 732-X43 C Automotive radiator cores and tanks, reflectors Electrical flashlight shells, lamp (mures, socket shells, screw shells, bead chain... 

Automotive reflectors, radiator cores and tanks Electrical lamp fixtures, flashlight shells, screw shells, socket shells, bead chain... 

I told you, when we last met, a good deal about carbonic acid. We found, by the lime-water test, that when the vapour from the top of the candle or lamp was received into bottles, and tested by this solution of lime-water (the composition of which I explained to you, and which you can make for yourselves), we had that white opacity which was in fact calcareous matter, like shells and corals, and many of the rocks and minerals in the earth. But I have not yet told you fully and clearly the chemical history of this substance—carbonic acid—as we... 

Another notable scallop shell application is for fluorescent materials. Scallop shell and a well-known fluorescent calcite have identical structures and components. Shimono et al. (2006) irradiated a roasted scallop shell with ultraviolet, and it gleamed, suggesting that scallop shells could be used as an environmental friendly fluorescent material for audio visual displays or fluorescent lamps. 

There are a few green Tb -based phosphors, suitable for application in fluorescent lamps. Despite intensive research, no substitute for Y203 Eu with the same spectral properties has been found, leaving it the only red primary with line emission at about 611 nm. The width and position of the emission bands originating from optical transitions within the f-electronic shell are almost independent of the chemical environment. The relative intensity of the separate bands, however, depends on the crystal lattice. The transitions on many rare-earth ions are spin- and parity-forbidden and therefore rather slow (in the ms range). However, for a number of rare-earth ions, broad emission bands are also known, due to d f emission, e.g. 

Resonance absorption is most sensitive and its application is most straightforward when the emission line is not self-reversed and when it has a Doppler profile corresponding to a low translational temperature. " For molecules, the strength of an electronic transition is dissipated over many individual lines with the result that the emission and absorption intensity of any single line is generally less than for atoms. Although this lowers the sensitivity of the method, it also tends to reduce the problems which can arise from self-reversal of the lines emitted by the source. The OH radical is well suited to a study by resonance absorption because the intensity from a simple lamp emitting the A l,+ — X Il resonance system is concentrated in a few lines of the (0,0) band with low values of K, which are quite widely separated. present address Thornton Research Centre, Shell Research Ltd., P.O. Box 1, Chester. 

Powdered activated carbon (PAC) can be derived from a number of different agricultural commodities, including waste soy hull (32-36). Commercial activated carbon, however, is manufactured from only a few of these, including wood and sawdust, peat, hgnite, nutshells (including coconut shell), and pits (37). Related materials include animal charcoal, gas black, furnace black, lamp black, and activated charcoal, but these are not used in fats and oils purification and will not be further addressed. 

The history of Shell as a real oil enterprise began in early 1890, when Marcus Samuel Junior made a visit to Batum on the Black Sea from where Russian oil from Baku was imported. The businessman was very impressed by the scale of operations. He saw a large market for kerosene in the Far East where it was used for lamps and cooking. Unfortunately, American Standard Oil Trust had a monopoly on the business. So, Marcus had to find a way to undercut prices. Quite separately, the Dutch company, Royal Dutch Petroleum Company, was formed to develop an oilfield in Pangkalan Brandan in Sumatra. Established in the Hague, it enjoyed the support of King William III of the Netherlands. 

Figure 134. Stabilization of indomethacin coloration (light source mercury lamp) by the addition of titanium dioxide to gelatin capsule shells. Titanium dioxide concentration o,0 , 0.5% A, 1.0% , 1.5%. The values of k were calculated from die equation AE (color difference) = k( t /2 - 0.08). (Reproduced from Ref. 558 with permission.)...

In opening the piece after firing, the breech-block strikes the lamp on top of the extractor, and revolves it so os to carry the now empty cartrid -shell to the rear. After psssiug a certain ixiint, the >iral spring in front 6f the extractor is released, and accelerates its motion, so that the cartridge is thrown sharply a nst the beveled surface of the ejector-stud, by mch it is deflected upward and exiled from the gun,... 

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