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reduction+of+life

  • 61 уменьшение срока службы

    Русско-английский политехнический словарь > уменьшение срока службы

  • 62 цена

    ж.

    ры́ночная цена́ — market price

    твёрдые це́ны — fixed / stable prices

    кра́йняя (низшая) цена́ — the lowest price

    фабри́чная цена́ — factory (gate) price

    цено́й (в вн.) — at the price (of), priced (at); costing (d)

    по высо́кой цене́ — at a high price

    па́дать в цене́ — go down (in price)

    поднима́ться в цене́ — go up (in price)

    повыше́ние / рост цен — rise in prices

    пониже́ние цен — fall / drop in prices

    сниже́ние цен — price reduction

    колеба́ние цен — price fluctuation

    взви́нчивать це́ны — inflate prices; rig the market идиом.

    2) (степень ценности, значимости) worth, value

    знать це́ну деньга́м — know the value of money

    знать себе́ це́ну — know one's own worth / value

    мы зна́ем им це́ну — we know their worth

    3) книжн. (то, чем окупается, возмещается что-л) cost, price

    цено́ю чего́-л — at the cost / price of smth

    любо́й цено́й — at any price / cost

    цено́й жи́зни — at the cost of one's life

    дорого́й цено́й заплати́ть (за вн.) — pay a high price (for)

    ••

    э́тому цены́ нет — it is invaluable / priceless

    э́то в цене́ разг. — it is valued highly

    Новый большой русско-английский словарь > цена

  • 63 καταστροφή

    A overturning,

    θεσμίων A.Eu. 490

     (lyr., pl.).
    3 return of vibrating string to axial position, Arist.Pr. 921a17 (pl.).
    II end, close, conclusion,

    ἄνευ δὲ λύπης οὐδαμοῦ καταστροφή A.Supp. 442

    ; κ. βίου, i.e. death, S. OC 103, cf. Plb.5.54.4, etc.;

    κ. τοῦ ζῆν Men.Pk.12

    : without βίου, Th.2.42, Epicur.Sent. 35; ποία κ. εὐδαιμονεστέρα; Arr.Epict.4.10.17; τὸ τέλος αὐτῶν τῆς κ. the event of their life's end, Plb.6.8.6;

    κ. καὶ συντέλεια τῶν γεγονότων Id.3.1.9

    ;

    κ. λαμβάνειν Id.3.47.8

    ; τὴν κ. τῆς βίβλου ποιεῖσθαι εἰς .. Id.1.13.5; in the drama, dénouement, ending, Antiph.191.19, Hero Aut.22.6, Luc.Alex.60, al., Euanth. et Donat. in CGFpp.67,69 K.: pl.,

    αἱ κ. τῶν δραμάτων Plb.3.48.8

    .
    III ruin, undoing, κ. γῆς (of a person) Men.548.8.
    IV crane, Stud.Pal.10.259.13 (pl., vi A.D.).

    Greek-English dictionary (Αγγλικά Ελληνικά-λεξικό) > καταστροφή

  • 64 strategic alliance

    Gen Mgt
    an agreement between two or more organizations to cooperate in a specific business activity, so that each benefits from the strengths of the other, and gains competitive advantage. The formation of strategic alliances has been seen as a response to globalization and increasing uncertainty and complexity in the business environment. Strategic alliances involve the sharing of knowledge and expertise between partners as well as the reduction of risk and costs in areas such as relationships with suppliers and the development of new products and technologies. A strategic alliance is sometimes equated with a joint venture, but an alliance may involve competitors, and generally has a shorter life span. Strategic partnering is a closely related concept.

    The ultimate business dictionary > strategic alliance

  • 65 Deville, Henri Etienne Sainte-Claire

    SUBJECT AREA: Metallurgy
    [br]
    b. 11 March 1818 St Thomas, Virgin Islands
    d. 1 July 1881 Boulogne-sur-Seine, France
    [br]
    French chemist and metallurgist, pioneer in the large-scale production of aluminium and other light metals.
    [br]
    Deville was the son of a prosperous shipowner with diplomatic duties in the Virgin Islands. With his elder brother Charles, who later became a distinguished physicist, he was sent to Paris to be educated. He took his degree in medicine in 1843, but before that he had shown an interest in chemistry, due particularly to the lectures of Thenard. Two years later, with Thenard's influence, he was appointed Professor of Chemistry at Besançon. In 1851 he was able to return to Paris as Professor at the Ecole Normale Supérieure. He remained there for the rest of his working life, greatly improving the standard of teaching, and his laboratory became one of the great research centres of Europe. His first chemical work had been in organic chemistry, but he then turned to inorganic chemistry, specifically to improve methods of producing the new and little-known metal aluminium. Essentially, the process consisted of forming sodium aluminium trichloride and reducing it with sodium to metallic aluminium. He obtained sodium in sufficient quantity by reducing sodium carbonate with carbon. In 1855 he exhibited specimens of the metal at the Paris Exhibition, and the same year Napoleon III asked to see them, with a view to using it for breastplates for the Army and for spoons and forks for State banquets. With the resulting government support, he set up a pilot plant at Jarvel to develop the process, and then set up a small company, the Société d'Aluminium at Nan terre. This raised the output of this attractive and useful metal, so it could be used more widely than for the jewellery to which it had hitherto been restricted. Large-scale applications, however, had to await the electrolytic process that began to supersede Deville's in the 1890s. Deville extended his sodium reduction method to produce silicon, boron and the light metals magnesium and titanium. His investigations into the metallurgy of platinum revolutionized the industry and led in 1872 to his being asked to make the platinum-iridium (90–10) alloy for the standard kilogram and metre. Deville later carried out important work in high-temperature chemistry. He grieved much at the death of his brother Charles in 1876, and his retirement was forced by declining health in 1880; he did not survive for long.
    [br]
    Bibliography
    Deville published influential books on aluminium and platinum; these and all his publications are listed in the bibliography in the standard biography by J.Gray, 1889, Henri Sainte-Claire Deville: sa vie et ses travaux, Paris.
    Further Reading
    M.Daumas, 1949, "Henri Sainte-Claire Deville et les débuts de l'industrie de l'aluminium", Rev.Hist.Sci 2:352–7.
    J.C.Chaston, 1981, "Henri Sainte-Claire Deville: his outstanding contributions to the chemistry of the platinum metals", Platinum Metals Review 25:121–8.
    LRD

    Biographical history of technology > Deville, Henri Etienne Sainte-Claire

  • 66 Laval, Carl Gustaf Patrik de

    [br]
    b. 9 May 1845 Orsa, Sweden
    d. 2 February 1913 Stockholm, Sweden
    [br]
    Swedish inventor of an advanced cream separator and a steam turbine.
    [br]
    Gustaf de Laval was educated at the Stockholm Technical Institute and Uppsala University. He proved to have an unfailing vigour and variety in his inventive talent, for his interests ranged from electric lighting and electrometallurgy to aerodynamics. In the 1890s he employed over one hundred engineers to develop his inventions, but he was best known for two: the cream separator and a steam turbine. In 1877 he invented the high-speed centrifugal cream separator, which was probably the greatest advance in butter-making up to that time. By 1880 the separators were being successfully marketed all over the world, for they were quickly adopted in larger dairies where they effected enormous savings in labour and space. He followed this with various devices for the dairy industry, including a vacuum milking machine perfected in 1913. In c. 1882, de Laval invented a turbine on the principle of Hero's engine, but he quickly turned his attention to the impulse type, which was like Branca's, with a jet of steam impinging on a set of blades around the periphery of a wheel. He applied for a British patent in 1889. The steam was expanded in a single stage from the initial to the final pressure: to secure economy with the steam issuing at high velocity, the blades also had to rotate at high velocity. An early 5 hp (3.7 kW) turbine rotated at 30,000 rpm, so reduction gearing had to be introduced. Production started in Sweden in 1893 and in other countries at about the same time. In 1892 de Laval proposed employing one of his turbines of 15 hp (11 kW) in an experimental launch, but there is no evidence that it was ever actually installed in a vessel. However, his turbines were popular for powering electric generating sets for lighting textile mills and ships, and by 1900 were available in sizes up to 300 bhp (224 kW).
    [br]
    Bibliography
    1889, British patent no. 7,143 (steam turbine).
    Further Reading
    T.Althin, 1943, Life of de Laval, Stockholm (a full biography).
    T.I.Williams (ed.), 1969, A Biographical Dictionary of Scientists, London: A. \& C. Black (contains a brief biography).
    R.M.Neilson, 1902, The Steam Turbine, London: Longmans, Green \& Co. (fully covers the development of de Laval's steam turbine).
    H.W.Dickinson, 1938, A Short History of the Steam Engine, Cambridge University Press (contains a short account of the development of the steam turbine).
    R.L.Hills, 1989, Power from Steam. A History of the Stationary Steam Engine, Cambridge University Press (contains a short account).
    RLH

    Biographical history of technology > Laval, Carl Gustaf Patrik de

  • 67 предотвращать опасность

    1. stave off a danger
    2. staving off a danger

    Русско-английский военно-политический словарь > предотвращать опасность

  • 68 прямой пуск вращающегося электродвигателя

    1. full voltage starter application
    2. DOL
    3. direct-on-line starting
    4. direct starting
    5. direct operation of a motor
    6. direct line starting
    7. across-the-line starting (US)

     

    прямой пуск вращающегося электродвигателя
    Пуск вращающегося электродвигателя путем непосредственного подключения его к питающей сети.
    [ ГОСТ 27471-87]

    EN

    direct-on-line starting
    across-the-line starting (US)
    the process of starting a motor by connecting it directly to the supply at rated voltage
    [IEV number 411-52-15]

    FR

    démarrage direct
    mode de démarrage d'un moteur, consistant à lui appliquer directement sa pleine tension assignée
    [IEV number 411-52-15]

    0855
    Рис. ABB
    Схема прямого пуска электродвигателя

    Magnetic only circuit-breaker - Автоматический выключатель с электромагнитным расцепителем

    Contactor KL - Контактор KL

    Thermal relay - Тепловое реле

     

    Параллельные тексты EN-RU

    Direct-on-line starting

    Direct-on-line starting, which is often abbreviated as DOL, is perhaps the most traditional system and consists in connecting the motor directly to the supply network, thus carrying out starting at full voltage.

    Direct-on-line starting represents the simplest and the most economical system to start a squirrel-cage asynchronous motor and it is the most used.

    As represented in Figure 5, it provides the direct connection to the supply network and therefore starting is carried out at full voltage and with constant frequency, developing a high starting torque with very reduced acceleration times.

    The typical applications are relevant to small power motors also with full load starting.

    These advantages are linked to some problems such as, for example, the high inrush current, which - in the first instants - can reach values of about 10 to 12 times the rated current, then can decrease to about 6 to 8 times the rated current and can persist to reach the maximum torque speed.

    The effects of such currents can be identified with the high electro-dynamical stresses on the motor connection cables and could affect also the windings of the motor itself; besides, the high inrush torques can cause violent accelerations which stress the transmission components (belts and joints) generating distribution problems with a reduction in the mechanical life of these elements.

    Finally, also the possible electrical problems due to voltage drops on the supply line of the motor or of the connected equipment must be taken into consideration.
    [ABB]

    Прямой пуск

    Прямой пуск, который по-английски часто сокращенно обозначают как DOL, является, пожалуй наиболее распространенным способом пуска. Он заключается в непосредственном (т. е. прямом) подключении двигателя к питающей сети. Это означает, что пуск двигателя осуществляется при полном напряжении.

    Схема прямого пуска является наиболее простым, экономичным и чаще всего применяемым решением для электродвигателей с короткозамкнутым ротором.

    Схема прямого подключения к сети представлена на рисунке 5. Пуск осуществляется при полном напряжении и постоянной частоте сети. Электродвигатель развивает высокий пусковой момент при коротком времени разгона.

    Типичные области применения – маломощные электродвигатели, в том числе с пуском при полной нагрузке.

    Однако, наряду с преимуществами имеются и определенные недостатки, например, бросок пускового тока, достигающий в первоначальный момент 10…12-кратного значения от номинального тока электродвигателя. Затем ток двигателя уменьшается примерно до 6…8-кратного значения номинального тока и будет держаться на этом уровне до тех пор, пока скорость двигателя не достигнет максимального значения.

    Такое изменение тока оказывает значительное электродинамическое воздействие на кабель, подключенный к двигателю. Кроме того пусковой ток воздействует на обмотки двигателя. Высокий начальный пусковой момент может привести к значительному ускорению и следовательно к значительной нагрузке элементов привода (ремней, крепления узлов), что вызывает сокращение их срока службы.

    И, наконец, следует принять во внимание возможное возникновение проблем, связанных с падением напряжения в линии питания двигателя и подключенного к этой линии оборудования.
    [Перевод Интент]




     

    Тематики

    Синонимы

    EN

    DE

    FR

    Русско-английский словарь нормативно-технической терминологии > прямой пуск вращающегося электродвигателя

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