Minutes of Proceedings of the Institution of Civil Engineers, Том 143

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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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Сторінка 245 - The object of a tube or conduit is to facilitate the insertion or extraction of the conductors, to protect them from mechanical injury, and, as far as possible, from moisture. Tubes or conduits are to be considered merely as raceways, and are not to be relied on for insulation between wire and wire or between the wire and the ground.
Сторінка 245 - Must be kept free from contact with gas, water or other metallic piping, or any other conductors or conducting material which they may cross, by some continuous and firmly fixed non-conductor, creating a separation of at least one inch. Deviations from this rule may sometimes be allowed by special permission.
Сторінка 440 - Experiments have been made upon alloys of lead with tin, bismuth and zinc, and of zinc with tin and mercury. The method employed consisted in dissolving (i) the alloy, and (2) the corresponding mixture of metals in mercury, and measuring the heat of solution in each case. On the assumption that the solutions obtained are identical, the difference between the heat of solution of the mixture and that of the...
Сторінка 319 - A New Method of Graphic Statics applied in the Construction of Wrought Iron Girders. By E. Olander. 16 plates, small folio. (1887.) IDS.
Сторінка 443 - ... determination of the frequency of alternation given by a standard condenser through a circuit of known self-induction, in order to ascertain whether the well-known theory of the case was accurate or only an approximation. The absolute determinations necessary were three, viz. : — (1) The capacity of a condenser, which is K times a length; (2) The self-induction of a coil, which is p times a length; though it would be natural to measure it indirectly by comparison with the already carefully...
Сторінка 307 - ... of distinguished eminence in science, literature or the arts or for public services should be secured, a limited number of persons of such qualifications shall be elected by the Committee.
Сторінка 245 - Must not be fished for any great distance, and only in places where the inspector can satisfy himself that the rules have been complied with. d. Twin wires must never be used, except in conduits, or where flexible conductors are necessary.
Сторінка 251 - Two regulating switches are connected in multiple on the positive and two on the negative sides to permit of discharge at two potentials, or to enable the battery to be charged and discharged simultaneously. The conductors between each series of cells, and between the regulating cells and the regulating switches, consist of copper bars 3 inches wide by £ inch thick. These bars are supported on porcelain insulators resting in hangers. The connections of this equipment are shown in Fig.
Сторінка 252 - ... hours. Provision has been made in the battery-room for the installation of a duplicate battery, which can be placed over the present plant. The booster is used to raise the voltage from that of the system to that required for charging the battery. The booster can be used also to raise the voltage of discharge for feeding some distant point of the system at a higher potential than would be normally required.
Сторінка 12 - Augustus, an emperor of whom it is difficult to say whether he devotes more love or more diligence to the common weal, has now conferred upon me the duties of water commissioner, duties contributing, partly to the convenience, partly to the health, even to the safety of the city, and from olden time exercised by the most distinguished citizens, I therefore consider it to be the first and most important thing to be done, as has always been one of my fundamental principles in other affairs, to learn...

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