Minutes of Proceedings of the Institution of Civil Engineers, Band 135The Institution, 1899 Vols. 39-204 (1874/75-1916/17) have a section 3 containing "Abstracts of papers in foreign transactions and periodicals" (title varies); issued separately, 1919-37, as the institution's Engineering abstracts from the current periodical literature of engineering and applied science, published outside the United Kingdom. |
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Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
3-phase alternating currents aluminium amount amperes apparatus armature Author bars boiler Bremen Bremerhaven bridge C.E. VOL cables canal carried cent centre clinkering coal coils Company conductors connected considerable construction copper cost curves depth designed diameter district driving dynamo effect Elbe electric electrical conductivity electromotive force engineer erected experiments feet flue Fowler furnace gases girders heat Hopkinson increased induction motor insulated iron John Hopkinson kathode length light load locomotive machine machinery magnetic Messrs metal miles millimetres mines Minutes of Proceedings motors nickel nickel carbonyl Nogat obtained ordinary Paper pillar pipes placed Plate practice pressure Proceedings Inst rails Railway revolutions per minute river roads seam shaft side Sir John Fowler square inch station steam steel subsidence surface temperature thick tons transformers transmission tube tunnel turbines vertical vessels Vistula volts weight Weser wire
Beliebte Passagen
Seite 338 - He was created a Knight Commander of the Order of St. Michael and St. George in 1874, and was appointed Governor of the Straits Settlements in 1875.
Seite 9 - Canst thou lift up thy voice to the clouds, That abundance of waters may cover thee? Canst thou send lightnings, that they may go, And say unto thee, Here we are?
Seite 30 - Chronstet isolated the metal in tlle year 1751, and that Bergman confirmed his discovery in 1774. The methods hitherto employed for extracting the metal from its ores are very complicated ; they have involved concentrating the nickel either as a sulphide (matte or regulus), or as arsenide (speise) followed by either "dry" or "wet
Seite 27 - ... which I have been personally associated. I have shown how electricity began its beneficent career by protecting our lives and property from the disastrous effects of nature's dread artillery, how it facilitates intercommunication between mind and mind by economising time and annihilating space. It " Speeds the soft intercourse from soul to soul, And wafts a sigh from Indus to the Pole.
Seite 32 - It is soluble in alcohol, petroleum, and chloroform ; and it is not acted upon by dilute acids or alkalies. It can be readily distilled without decomposition ; but, on heating the vapour to 150° C., it is completely dissociated into its components, pure carbon-monoxide being obtained, while the nickel is deposited in a dense metallic film upon the sides of the vessel in which the compound is heated. After the production of nickel carbonyl had become easy, Drs Mond, Langer, and Quincke directed their...
Seite 36 - ... and 15 days, until about 60 per cent. of the nickel has been removed as nickel carbonyl. The residue from this operation, amounting to about one-third of the original calcined matte, and not differing much from it in composition, is returned to the first operation and then naturally follows the same course as before.
Seite 35 - It then passes to the second operation (2) for the extraction of ptrt of the copper (about two-thirds) by sulphuric acid, the copper being sold as crystallized sulphate of copper. The residue from this process contains about 51 per cent, of nickel and 21 per cent, of copper, and passes to the third operation (3) for reducing the nickel and incidentally the remaining copper, to the metallic state, care being taken to avoid reducing the iron. This is effected in a tower provided with shelves, over...
Seite 38 - ... laden with the volatile nickel carbonyl, is conducted to the decomposers. These are of very ingenious design, and are intended to produce the nickel in the form of shot to obviate the difficulty and expense entailed in cutting up sheet or lump metal. The decomposer is shown in Fig. 84, which presents vertical sections of the apparatus on planes at right angles to each other. A is a cylindrical vessel, preferably built up of short cylinders, aa, bolted together; it contains a central tube, C,...
Seite 33 - None of the other metals which were submitted to investigation showed indications of combining directly with carbon-monoxide. The discovery that in a mixture of metals only nickel and iron would form volatile compounds with carbon-monoxide, and that they could, therefore, be separated from the other metals, was sufficiently important to induce Dr.
Seite 31 - The gas escaping from the apparatus was ignited, and while the tube containing the nickel was cooling, the flame became luminous, and increased in luminosity as the temperature sank below 100° C. Metallic spots were deposited on a cold plate of porcelain held in this luminous flame, and on heating the tube through which the gas was escaping a metallic mirror was obtained, while the luminosity of the flame disappeared. These metallic deposits were found to be pure nickel. Nickel carbonyl was then...