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research chemist

  • 1 químico

    adj.
    1 chemical.
    2 chemical, pertaining to chemistry, chemic.
    m.
    1 chemist.
    2 chemical, chemical product.
    * * *
    1 chemical
    ► nombre masculino,nombre femenino
    1 chemist
    * * *
    1. (f. - química)
    adj.
    2. (f. - química)
    noun
    * * *
    químico, -a
    1.
    2.
    SM / F chemist
    * * *
    I
    - ca adjetivo chemical
    II
    - ca masculino, femenino chemist
    * * *
    I
    - ca adjetivo chemical
    II
    - ca masculino, femenino chemist
    * * *
    químico1
    1 = chemist.

    Ex: There are many catalogs and each of them functions in a different world -- the worlds of the research chemist and of the adult, young adult, or child interested in chemistry.

    químico2
    Nota: Adjetivo.

    Ex: Entities may be physical, eg matter, or physical phenomena; chemical, eg molecular states, minerals; biological, ie living beings; or artefacts, ie manufactured items.

    * análisis químico = chemical analysis.
    * arma química = chemical weapon.
    * compuesto químico = chemical compound.
    * desastre químico = chemical disaster.
    * enlace químico = chemical bond.
    * físico-químico = physicochemical.
    * industria de la ingeniería química, la = chemical engineering industry, the.
    * industria química = chemical industry.
    * industria química, la = chemical industry, the.
    * ionización química = chemical ionisation.
    * nomenclatura química = chemical nomenclature.
    * planta química = chemical plant.
    * producto químico usado en agricultura = agrochemical.
    * tratamiento químico = chemical treatment.

    * * *
    químico1 -ca
    chemical
    químico2 -ca
    masculine, feminine
    chemist
    * * *

    químico
    ◊ -ca adjetivo

    chemical
    ■ sustantivo masculino, femenino
    chemist
    químico,-a
    I adjetivo chemical
    II sustantivo masculino y femenino chemist

    ' químico' also found in these entries:
    Spanish:
    abono
    - decolorar
    - enlace
    - química
    English:
    chemical
    - chemist
    * * *
    químico, -a
    ♦ adj
    chemical
    ♦ nm,f
    [científico] chemist
    * * *
    I adj chemical;
    II m, química f chemist
    * * *
    químico, -ca adj
    : chemical
    químico, -ca n
    : chemist
    * * *
    químico1 adj chemical
    químico2 n chemist

    Spanish-English dictionary > químico

  • 2 химик

    м. chemist

    Русско-английский большой базовый словарь > химик

  • 3 recherche

    recherche [ʀ(ə)∫εʀ∫]
    feminine noun
       a. ( = action de rechercher) search (de for)
    • être/se mettre à la recherche de qch/qn to be/go in search of sth/sb
       b. ( = enquête) recherches investigations
       c. ( = poursuite) search (de for)
       d. ( = métier, spécialité) la recherche research
    • recherches ( = études) research
       e. ( = raffinement) [de tenue] studied elegance ; (pejorative = affectation) affectation
    • être habillé avec recherche/sans recherche to be dressed with studied elegance/carelessly
    * * *
    ʀ(ə)ʃɛʀʃ
    1) ( étude) research [U]

    faire des recherches en biologie/sur le cancer — to do research in biology/into cancer

    2) ( fouille) search

    être à la recherche de — to be looking for, to be in search of

    4) ( soin) ( raffinement) meticulousness; ( affectation) pej affectation

    avec recherche — [habillé, décoré, écrit] with meticulous care

    sans recherche — ( non affecté) without affectation; ( négligé) carelessly

    •
    Phrasal Verbs:
    * * *
    ʀ(ə)ʃɛʀʃ
    1. nf
    1) (= action) search

    être à la recherche de [livre, emploi, pièce détachée] — to be looking for, [bonheur, équilibre, partenaire idéal] to be in search of

    Je suis à la recherche d'un emploi. — I'm looking for a job.

    se mettre à la recherche de [livre, emploi, pièce détachée] — to go looking for, [bonheur, équilibre, partenaire idéal] go in search of

    2) (= raffinement) studied elegance
    3) (scientifique) research

    La recherche est une priorité pour ce gouvernement. — Research is a priority for this government.

    Je voudrais faire de la recherche. — I'd like to do research.

    2. recherches nfpl
    1) [police] search

    La police a interrompu les recherches. — The police called off the search.

    2) (scientifiques) research sg
    * * *
    1 ( étude) research ¢; la recherche et le développement research and development; recherche fondamentale/appliquée basic/applied research; recherche scientifique/militaire/spatiale scientific/military/space research; fonds pour la recherche research funds; être/travailler dans la recherche to be/to work in research; faire des recherches en biologie/sur le cancer/pour améliorer un produit to do research in biology/into cancer/into improving a product;
    2 ( fouille) search; après deux heures de recherche after a two-hour search; tout le monde a participé aux recherches everyone took part in the search; les recherches pour retrouver l'enfant n'ont rien donné the search for the child drew a blank; la recherche d'un livre/d'un criminel the search for a book/for a criminal; la recherche de vos renseignements lui a pris deux heures he spent two hours searching for the information you wanted; à la recherche de qn/qch in search of sb/sth; être à la recherche de to be looking for, to be in search of; aller or partir or se mettre à la recherche de to go looking for, to go in search of; ils sont à la recherche d'un logement they're looking for somewhere to live; être à la recherche d'un emploi to be looking for a job, to be job-hunting; se mettre à la recherche d'un emploi to go job-hunting; travailler à la recherche d'une solution to work on finding a solution;
    3 ( volonté d'atteindre) recherche de pursuit of; être à la recherche d'un bonheur idéal to be in pursuit of ideal happiness;
    4 ( soin) ( raffinement) meticulousness; ( affectation) pej affectation; avec recherche [habillé, décoré, écrit] with meticulous care; sans recherche ( non affecté) without affectation; ( négligé) carelessly; il y a trop de recherche dans votre style/votre tenue you are too fastidious about your style/your dress.
    recherche assistée par ordinateur, RAO computer-aided retrieval, CAR; recherche dichotomique Ordinat binary ou dichotomizing search; recherche d'emploi job-hunting; c'est sa première recherche d'emploi he's looking for his first job; recherche opérationnelle operations ou operational research; recherche de paternité Jur establishment of paternity; action en recherche de paternité paternity suit.
    [rəʃɛrʃ] nom féminin
    1. [d'un objet, d'une personne, d'un emploi etc.] search
    [du bonheur, de la gloire, du plaisir] pursuit
    [d'informations] research
    4. [prospection]
    5. SCIENCES & UNIVERSITÉ
    bourse/travaux de recherche research grant/work
    a. [spécialiste] she's a research chemist
    6. [raffinement] sophistication, refinement
    sans recherche simple, plain
    ————————
    recherches nom féminin pluriel
    [enquête] search
    [travaux - généralement] work, research ; [ - de médecine] research
    à la recherche de locution prépositionnelle
    in search of, looking ou searching for
    être/partir/se mettre à la recherche de to be/to set off/to go in search of
    ‘À la recherche du temps perdu’ Proust ‘In Search of Lost Time’

    Dictionnaire Français-Anglais > recherche

  • 4 Muller, Paul Hermann

    [br]
    b. 12 January 1899 Olten, Solothurn, Switzerland
    d. 13 October 1965 Basle, Switzerland
    [br]
    Swiss chemist, inventor of the insecticide DDT.
    [br]
    Muller was educated in Basle and his interest in chemistry was stimulated when he started work as a laboratory assistant in the chemical factory of Dreyfus \& Co. After further laboratory work, he entered the University of Basle in 1919, achieving his doctorate in 1925. The same year, he entered the dye works of J.R.Geigy AG as a research chemist. He spent the rest of his career there, rising to the position of Deputy Head of Pest Control Research. From 1935 he began the search for an insecticide that was fast acting and persistent, but harmless to plants and warmblooded animals. In 1940 he patented the use of a compound known since 1873, dichlorodiphenyltrichloroethane, or DDT. It could be easily and cheaply manufactured and was highly effective. Muller obtained a Swiss patent for DDT in 1940 and it went into commercial production two years later. One useful application of DDT at the end of the Second World War was in killing lice to prevent typhus epidemics. It was widely used and an important factor in farmers' postwar success in raising food production, but after twenty years or so, some species of insects were found to have developed resistance to its action, thus limiting its effectiveness. Worse, it was found to be harmful to other animals, which gave rise to anxieties about its persistence in the food chain. By the 1970s its use was banned or strictly limited in developed countries. Nevertheless, in its earlier career it had conferred undoubted benefits and was highly valued, as reflected by the award of a Nobel Prize in Medicine or Physiology in 1948.
    [br]
    Principal Honours and Distinctions
    Nobel Prize in Medicine or Physiology 1948.
    Bibliography
    Further Reading
    Obituary, 1965, Nature 208:1,043–4.
    LRD

    Biographical history of technology > Muller, Paul Hermann

  • 5 Whinfield, John Rex

    [br]
    b. 16 February 1901 Sutton, Surrey, England
    d. 6 July 1955 Dorking, Surrey, England
    [br]
    English inventor ofTerylene.
    [br]
    Whinfield was educated at Merchant Taylors' School and Caius College, Cambridge, where he studied chemistry. Before embarking on his career as a research chemist, he worked as an un-paid assistant to the chemist C.F. Cross, who had taken part in the discovery of rayon. Whinfield then joined the Calico Printers' Association. There his interest was aroused by the discovery of nylon by W.H. Carothers to seek other polymers which could be produced in fibre form, usable by the textile industries. With his colleague J.T. Dickson, he discovered in 1941 that a polymerized condensate of terephthalic acid and ethylene glycol, polyethylene terephthgal-late, could be drawn into strong fibres. Whinfield and Dickson filed a patent application in the same year, but due to war conditions it was not published until 1946. The Ministry of Supply considered that the new material might have military applications and undertook further research and development. Its industrial and textile possibilities were evaluated by Imperial Chemical Industries (ICI) in 1943 and "Terylene", as it came to be called, was soon recognized as being as important as nylon.
    In 1946, Dupont acquired rights to work the Calico Printers' Association patent in the USA and began large-scale manufacture in 1954, marketing the product under the name "Dacron". Meanwhile ICI purchased world rights except for the USA and reached the large-scale manufacture stage in 1955. A new branch of the textile industry has grown up from Whinfield's discovery: he lived to see most people in the western world wearing something made of Terylene. It was one of the major inventions of the twentieth century, yet Whinfield, perhaps because he published little, received scant recognition, apart from the CBE in 1954.
    [br]
    Principal Honours and Distinctions
    CBE 1954.
    Further Reading
    Obituary, 1966, The Times (7 July).
    Obituary, 1967, Chemistry in Britain 3:26.
    J.Jewkes, D.Sawers and R.Stillerman, 1969, The Sources of Invention, 2nd edn, London: Macmillan.
    LRD

    Biographical history of technology > Whinfield, John Rex

  • 6 химик-исследователь

    1) General subject: research chemist
    2) Perfume: scientific chemist

    Универсальный русско-английский словарь > химик-исследователь

  • 7 químico1

    1 = chemist.
    Ex. There are many catalogs and each of them functions in a different world -- the worlds of the research chemist and of the adult, young adult, or child interested in chemistry.

    Spanish-English dictionary > químico1

  • 8 исследователь

    1. student
    2. analyst
    3. explorer
    4. researcher
    5. research worker; researcher; explorer

    исследователи; научно-исследовательские работники — research workers

    6. investigator

    Русско-английский большой базовый словарь > исследователь

  • 9 Brearley, Harry

    SUBJECT AREA: Metallurgy
    [br]
    b. 18 February 1871 Sheffield, England
    d. 14 July 1948 Torquay, Devon, England
    [br]
    English inventor of stainless steel.
    [br]
    Brearley was born in poor circumstances. He received little formal education and was nurtured rather in and around the works of Thomas Firth \& Sons, where his father worked in the crucible steel-melting shop. One of his first jobs was to help in their chemical laboratory where the chief chemist, James Taylor, encouraged him and helped him fit himself for a career as a steelworks chemist.
    In 1901 Brearley left Firth's to set up a laboratory at Kayser Ellison \& Co., but he returned to Firth's in 1904, when he was appointed Chief Chemist at their Riga works, and Works Manager the following year. In 1907 he returned to Sheffield to design and equip a research laboratory to serve both Firth's and John Brown \& Co. It was during his time as head of this laboratory that he made his celebrated discovery. In 1913, while seeking improved steels for rifle barrels, he used one containing 12.68 per cent chromium and 0.24 per cent carbon, in the hope that it would resist fouling and erosion. He tried to etch a specimen for microscopic examination but failed, from which he concluded that it would resist corrosion by, for example, the acids encountered in foods and cooking. The first knives made of this new steel were unsatisfactory and the 1914–18 war interrupted further research. But eventually the problems were overcome and Brearley's discovery led to a range of stainless steels with various compositions for domestic, medical and industrial uses, including the well-known "18–8" steel, with 18 per cent chromium and 8 per cent nickel.
    In 1915 Brearley left the laboratory to become Works Manager, then Technical Director, at Brown Bayley's steelworks until his retirement in 1925.
    [br]
    Principal Honours and Distinctions
    Iron and Steel Institute Bessemer Gold Medal 1920.
    Bibliography
    Brearley wrote several books, including: 1915 (?), with F.Ibbotson, The Analysis of Steelworks Materials, London.
    The Heat Treatment of Tool Steels. Ingots and Ingot Moulds.
    Later books include autobiographical details: 1946, Talks on Steelmaking, American Society for Metals.
    1941, Knotted String: Autobiography of a Steelmaker, London: Longmans, Green.
    Further Reading
    Obituary, 1948, Journal of the Iron and Steel Institute: 428–9.
    LRD

    Biographical history of technology > Brearley, Harry

  • 10 Pasteur, Louis

    [br]
    b. 27 December 1822 Dole, France
    d. 28 September 1895 Paris, France
    [br]
    French chemist, founder of stereochemistry, developer of microbiology and immunology, and exponent of the germ theory of disease.
    [br]
    Sustained by the family tanning business in Dole, near the Swiss border, Pasteur's school career was undistinguished, sufficing to gain him entry into the teacher-training college in Paris, the Ecole Normale, There the chemical lectures by the great organic chemist J.B.A.Dumas (1800–84) fired Pasteur's enthusiasm for chemistry which never left him. Pasteur's first research, carried out at the Ecole, was into tartaric acid and resulted in the discovery of its two optically active forms resulting from dissymmetrical forms of their molecules. This led to the development of stereochemistry. Next, an interest in alcoholic fermentation, first as Professor of Chemistry at Lille University in 1854 and then back at the Ecole from 1857, led him to deny the possibility of spontaneous generation of animal life. Doubt had previously been cast on this, but it was Pasteur's classic research that finally established that the putrefaction of broth or the fermentation of sugar could not occur spontaneously in sterile conditions, and could only be caused by airborne micro-organisms. As a result, he introduced pasteurization or brief, moderate heating to kill pathogens in milk, wine and other foods. The suppuration of wounds was regarded as a similar process, leading Lister to apply Pasteur's principles to revolutionize surgery. In 1860, Pasteur himself decided to turn to medical research. His first study again had important industrial implications, for the silk industry was badly affected by diseases of the silkworm. After prolonged and careful investigation, Pasteur found ways of dealing with the two main infections. In 1868, however, he had a stroke, which prevented him from active carrying out experimentation and restricted him to directing research, which actually was more congenial to him. Success with disease in larger animals came slowly. In 1879 he observed that a chicken treated with a weakened culture of chicken-cholera bacillus would not develop symptoms of the disease when treated with an active culture. He compared this result with Jenner's vaccination against smallpox and decided to search for a vaccine against the cattle disease anthrax. In May 1881 he staged a demonstration which clearly showed the success of his new vaccine. Pasteur's next success, finding a vaccine which could protect against and treat rabies, made him world famous, especially after a person was cured in 1885. In recognition of his work, the Pasteur Institute was set up in Paris by public subscription and opened in 1888. Pasteur's genius transcended the boundaries between science, medicine and technology, and his achievements have had significant consequences for all three fields.
    [br]
    Bibliography
    Pasteur published over 500 books, monographs and scientific papers, reproduced in the magnificent Oeuvres de Pasteur, 1922–39, ed. Pasteur Vallery-Radot, 7 vols, Paris.
    Further Reading
    P.Vallery-Radot, 1900, La vie de Louis Pasteur, Paris: Hachette; 1958, Louis Pasteur. A Great Life in Brief, English trans., New York (the standard biography).
    E.Duclaux, 1896, Pasteur: Histoire d ' un esprit, Paris; 1920, English trans., Philadelphia (perceptive on the development of Pasteur's thought in relation to contemporary science).
    R.Dobos, 1950, Louis Pasteur, Free Lance of Science, Boston, Mass.; 1955, French trans.
    LRD

    Biographical history of technology > Pasteur, Louis

  • 11 Caro, Heinrich

    [br]
    b. 13 February 1834 Poznan, Poland
    d. 11 October 1911 Dresden, Germany
    [br]
    German dyestuffi chemist.
    [br]
    Caro received vocational training as a dyer at the Gewerbeinstitut in Berlin from 1852, at the same time attending chemistry lectures at the university there. In 1855 he was hired as a colourist by a firm of calico printers in Mulheim an der Ruhr, where he was able to demonstrate the value of scientific training in solving practical problems. Two years later, the year after Perkin's discovery of aniline dyes, he was sent to England in order to learn the latest dyeing techniques. He took up a post an analytical chemist with the chemical firm Roberts, Dale \& Co. in Manchester; after finding a better way of synthesizing Perkin's mauve, he became a partner in the business. Caro was able to enlarge both his engineering experience and his chemical knowledge there, particularly by studying Hofmann's researches on the aniline dyes. He made several discoveries, including induline, Bismark brown and Martius yellow.
    Like other German chemists, however, he found greater opportunities opening up in Germany, and in 1866 he returned to take up a post in Bunsen's laboratory in Heidelberg. In 1868 Caro obtained the important directorship of Badische Anilin-Soda- Fabrik (BASF), the first true industrial research organization and leading centre of dyestuffs research. A steady stream of commercial successes followed. In 1869, after Graebe and Liebermann had showed him their laboratory synthesis of the red dye alizarin, Caro went on to develop a cheaper and commercially viable method. During the 1870s he collaborated with Adolf von Baeyer to make methylene blue and related dyes, and then went on to the azo dyes. His work on indigo was important, but was not crowned with commercial success; that came in 1897 when his successor at BASF discovered a suitable process for producing indigo on a commercial scale. Caro had resigned his post in 1889, by which time he had made notable contributions to German supremacy in the fast-developing dyestuffs industry.
    [br]
    Further Reading
    A.Bernthsen, 1912, obituary, Berichte derDeut
    schen Chemischen Gesellschaft, 45; 1,987–2,042 (a substantial obituary).
    LRD

    Biographical history of technology > Caro, Heinrich

  • 12 Carothers, Wallace Hume

    [br]
    b. 27 April 1896 Burlington, Iowa, USA
    d. 29 April 1937 Philadelphia, Pennsylvania, USA
    [br]
    American chemist, inventor of nylon.
    [br]
    After graduating in chemistry, Carothers embarked on academic research at several universities, finally at Harvard University. His earliest published papers, from 1923, heralded the brilliance and originality of his later work. In 1928, Du Pont de Nemours persuaded him to forsake the academic world to lead their new organic-chemistry group in a programme of fundamental research at their central laboratories at Wilmington, Delaware. The next nine years were extraordinarily productive, yielding important contributions to theoretical organic chemistry and the foundation of two branches of chemical industry, namely the production of synthetic rubber and of wholly synthetic fibres.
    Carothers began work on high molecular weight substances yielding fibres and introduced polymerization by condensation: polymerization by addition was already known. He developed a clear understanding of the relation between the repeating structural units in a large molecule and its physical chemical properties. In 1931, Carothers found that chloroprene could be polymerized much faster than isoprene, the monomer in natural rubber. This process yielded polychloroprene or neoprene, a synthetic rubber with improved properties. Manufacture began the following year, and the material has continued to be used for speciality rubbers.
    There followed many publications announcing new condensations polymers. On 2 January 1935, he obtained a patent for the formation of new polyamides, including one from adipic acid and hexamethylenediamene. After four years of development work, which cost Du Pont some $27 million, this new polyamide, or nylon, reached the stage of commercial production, beginning on 23 October 1938. Nylon stockings appeared the following year and 64 million were sold during the first twelve months. However, Carothers saw none of this spectacular success: he had died by his own hand in 1937, after a long history of gradually intensifying depression.
    [br]
    Principal Honours and Distinctions
    Elected to the National Academy of Science 1936 (he was the first industrial organic chemist to be so honoured).
    Bibliography
    H.M.Whitby and G.S.Whitby, 1940, Collected Papers of Wallace H.Carothers on Polymerisation, New York.
    Further Reading
    R.Adams, 1939, memoir, Biographical Memoirs of the National Academy of Sciences 20:293–309 (includes a complete list of Carothers's sixty-two scientific papers and most of his sixty-nine US patents).
    LRD

    Biographical history of technology > Carothers, Wallace Hume

  • 13 Daniell, John Frederick

    SUBJECT AREA: Electricity
    [br]
    b. 12 March 1790 London, England
    d. 13 March 1845 London, England
    [br]
    English chemist, inventor of the Daniell primary electric cell.
    [br]
    With an early bias towards science, Daniell's interest in chemistry was formed when he joined a relative's sugar-refining business. He formed a lifelong friendship with W.T.Brande, Professor of Chemistry at the Royal Institution, and together they revived the journal of the Royal Institution, to which Daniell submitted many of his early papers on chemical subjects. He made many contributions to the science of meteorology and in 1820 invented a hydrometer, which became widely used and gave precision to the measurement of atmospheric moisture. As one of the originators of the Society for Promoting Useful Knowledge, Daniell edited several of its early publications. His work on crystallization established his reputation as a chemist and in 1831 he was appointed the first Professor of Chemistry at King's College, London, where he was largely responsible for establishing its department of applied science. He was also involved in the Chemical Society of London and served as its Vice-President. At King's College he began the research into current electricity with which his name is particularly associated. His investigations into the zinc-copper cell revealed that the rapid decline in power was due to hydrogen gas being liberated at the positive electrode. Daniell's cell, invented in 1836, employed a zinc electrode in dilute sulphuric acid and a copper electrode in a solution of copper sulphate, the electrodes being separated by a porous membrane, typically an unglazed earthenware pot. He was awarded the Copley Medal of the Royal Society for his invention which avoided the "polarization" of the simple cell and provided a further source of current for electrical research and for commercial applications such as electroplating. Although the high internal resistance of the Daniell cell limited the current and the potential was only 1.1 volts, the voltage was so unchanging that it was used as a reference standard until the 1870s, when J. Lattimer Clark devised an even more stable cell.
    [br]
    Principal Honours and Distinctions
    FRS 1814. Royal Society Rumford Medal 1832, Copley Medal 1837, Royal Medal 1842.
    Bibliography
    1836, "On voltaic combinations", Phil. Transactions of the Royal Society 126:107–24, 125–9 (the first report of his experiments).
    Further Reading
    Obituary, 1845, Proceedings of the Royal Society, 5:577–80.
    J.R.Partington, 1964, History of Chemistry, Vol. IV, London (describes the Daniell cell and his electrical researches).
    B.Bowers, 1982, History of Electric Light and Power, London.
    GW

    Biographical history of technology > Daniell, John Frederick

  • 14 Gibson, R.O.

    [br]
    fl. 1920s–30s
    [br]
    English chemist who, with E.O.Fawcett, discovered polythene.
    [br]
    Dr Gibson's work towards the discovery of polythene had its origin in a visit in 1925 to Dr A. Michels of Amsterdam University; the latter had made major advances in techniques for studying chemical reactions at very high pressures. After working with Michels for a time, in 1926 Gibson joined Brunner Mond, one of the companies that went on to form the chemical giant Imperial Chemical Industries (ICI). The company supported research into fundamental chemical research that had no immediate commercial application, including the field being cultivated by Michels and Gibson. In 1933 Gibson was joined by another ICI chemist, E.O.Fawcett, who had worked with W.H. Carothers in the USA on polymer chemistry. They were asked to study the effects of high pressure on various reaction systems, including a mixture of benzaldehyde and ethylene. Gibson's notebook for 27 March that year records that after a loss of pressure during which the benzaldehyde was blown out of the reaction tube, a waxy solid was observed in the tube. This is generally recognized as the first recorded observation of polythene. By the following June they had shown that the white, waxy solid was a fairly high molecular weight polymer of ethylene formed at a temperature of 443°K and a pressure of 2,000 bar. However, only small amounts of the material were produced and its significance was not immediately recognized. It was not until two years later that W.P.Perrin and others, also ICI chemists, restarted work on the polymer. They showed that it could be moulded, drawn into threads and cast into tough films. It was a good electrical insulator and almost inert chemically. A British patent for producing polythene was taken out in 1936, and after further development work a production plant began operating in September 1939, just as the Second World War was breaking out. Polythene had arrived in time to make a major contribution to the war effort, for it had the insulating properties required for newly developing work on radar. When peacetime uses became possible, polythene production surged ahead and became the major industry it is today, with a myriad uses in industry and in everyday life.
    [br]
    Bibliography
    1964, The Discovery of Polythene, Royal Institute of Chemistry Lecture Series 1, London.
    LRD

    Biographical history of technology > Gibson, R.O.

  • 15 Abel, Sir Frederick August

    [br]
    b. 17 July 1827 Woolwich, London, England
    d. 6 September 1902 Westminster, London, England
    [br]
    English chemist, co-inventor of cordite find explosives expert.
    [br]
    His family came from Germany and he was the son of a music master. He first became interested in science at the age of 14, when visiting his mineralogist uncle in Hamburg, and studied chemistry at the Royal Polytechnic Institution in London. In 1845 he became one of the twenty-six founding students, under A.W.von Hofmann, of the Royal College of Chemistry. Such was his aptitude for the subject that within two years he became von Hermann's assistant and demonstrator. In 1851 Abel was appointed Lecturer in Chemistry, succeeding Michael Faraday, at the Royal Military Academy, Woolwich, and it was while there that he wrote his Handbook of Chemistry, which was co-authored by his assistant, Charles Bloxam.
    Abel's four years at the Royal Military Academy served to foster his interest in explosives, but it was during his thirty-four years, beginning in 1854, as Ordnance Chemist at the Royal Arsenal and at Woolwich that he consolidated and developed his reputation as one of the international leaders in his field. In 1860 he was elected a Fellow of the Royal Society, but it was his studies during the 1870s into the chemical changes that occur during explosions, and which were the subject of numerous papers, that formed the backbone of his work. It was he who established the means of storing gun-cotton without the danger of spontaneous explosion, but he also developed devices (the Abel Open Test and Close Test) for measuring the flashpoint of petroleum. He also became interested in metal alloys, carrying out much useful work on their composition. A further avenue of research occurred in 1881 when he was appointed a member of the Royal Commission set up to investigate safety in mines after the explosion that year in the Sealham Colliery. His resultant study on dangerous dusts did much to further understanding on the use of explosives underground and to improve the safety record of the coal-mining industry. The achievement for which he is most remembered, however, came in 1889, when, in conjunction with Sir James Dewar, he invented cordite. This stable explosive, made of wood fibre, nitric acid and glycerine, had the vital advantage of being a "smokeless powder", which meant that, unlike the traditional ammunition propellant, gunpowder ("black powder"), the firer's position was not given away when the weapon was discharged. Although much of the preliminary work had been done by the Frenchman Paul Vieille, it was Abel who perfected it, with the result that cordite quickly became the British Army's standard explosive.
    Abel married, and was widowed, twice. He had no children, but died heaped in both scientific honours and those from a grateful country.
    [br]
    Principal Honours and Distinctions
    Grand Commander of the Royal Victorian Order 1901. Knight Commander of the Most Honourable Order of the Bath 1891 (Commander 1877). Knighted 1883. Created Baronet 1893. FRS 1860. President, Chemical Society 1875–7. President, Institute of Chemistry 1881–2. President, Institute of Electrical Engineers 1883. President, Iron and Steel Institute 1891. Chairman, Society of Arts 1883–4. Telford Medal 1878, Royal Society Royal Medal 1887, Albert Medal (Society of Arts) 1891, Bessemer Gold Medal 1897. Hon. DCL (Oxon.) 1883, Hon. DSc (Cantab.) 1888.
    Bibliography
    1854, with C.L.Bloxam, Handbook of Chemistry: Theoretical, Practical and Technical, London: John Churchill; 2nd edn 1858.
    Besides writing numerous scientific papers, he also contributed several articles to The Encyclopaedia Britannica, 1875–89, 9th edn.
    Further Reading
    Dictionary of National Biography, 1912, Vol. 1, Suppl. 2, London: Smith, Elder.
    CM

    Biographical history of technology > Abel, Sir Frederick August

  • 16 Haber, Fritz

    SUBJECT AREA: Chemical technology
    [br]
    b. 9 December 1868 Breslau, Germany (now Wroclaw, Poland)
    d. 29 January 1934 Basel, Switzerland
    [br]
    German chemist, inventor of the process for the synthesis of ammonia.
    [br]
    Haber's father was a manufacturer of dyestuffs, so he studied organic chemistry at Berlin and Heidelberg universities to equip him to enter his father's firm. But his interest turned to physical chemistry and remained there throughout his life. He became Assistant at the Technische Hochschule in Karlsruhe in 1894; his first work there was on pyrolysis and electrochemistry, and he published his Grundrisse der technischen Electrochemie in 1898. Haber became famous for thorough and illuminating theoretical studies in areas of growing practical importance. He rose through the academic ranks and was appointed a full professor in 1906. In 1912 he was also appointed Director of the Institute of Physical Chemistry and Electrochemistry at Dahlem, outside Berlin.
    Early in the twentieth century Haber invented a process for the synthesis of ammonia. The English chemist and physicist Sir William Crookes (1832–1919) had warned of the danger of mass hunger because the deposits of Chilean nitrate were becoming exhausted and nitrogenous fertilizers would not suffice for the world's growing population. A solution lay in the use of the nitrogen in the air, and the efforts of chemists centred on ways of converting it to usable nitrate. Haber was aware of contemporary work on the fixation of nitrogen by the cyanamide and arc processes, but in 1904 he turned to the study of ammonia formation from its elements, nitrogen and hydrogen. During 1907–9 Haber found that the yield of ammonia reached an industrially viable level if the reaction took place under a pressure of 150–200 atmospheres and a temperature of 600°C (1,112° F) in the presence of a suitable catalyst—first osmium, later uranium. He devised an apparatus in which a mixture of the gases was pumped through a converter, in which the ammonia formed was withdrawn while the unchanged gases were recirculated. By 1913, Haber's collaborator, Carl Bosch had succeeded in raising this laboratory process to the industrial scale. It was the first successful high-pressure industrial chemical process, and solved the nitrogen problem. The outbreak of the First World War directed the work of the institute in Dahlem to military purposes, and Haber was placed in charge of chemical warfare. In this capacity, he developed poisonous gases as well as the means of defence against them, such as gas masks. The synthetic-ammonia process was diverted to produce nitric acid for explosives. The great benefits and achievement of the Haber-Bosch process were recognized by the award in 1919 of the Nobel Prize in Chemistry, but on account of Haber's association with chemical warfare, British, French and American scientists denounced the award; this only added to the sense of bitterness he already felt at his country's defeat in the war. He concentrated on the theoretical studies for which he was renowned, in particular on pyrolysis and autoxidation, and both the Karlsruhe and the Dahlem laboratories became international centres for discussion and research in physical chemistry.
    With the Nazi takeover in 1933, Haber found that, as a Jew, he was relegated to second-class status. He did not see why he should appoint staff on account of their grandmothers instead of their ability, so he resigned his posts and went into exile. For some months he accepted hospitality in Cambridge, but he was on his way to a new post in what is now Israel when he died suddenly in Basel, Switzerland.
    [br]
    Bibliography
    1898, Grundrisse der technischen Electrochemie.
    1927, Aus Leben und Beruf.
    Further Reading
    J.E.Coates, 1939, "The Haber Memorial Lecture", Journal of the Chemical Society: 1,642–72.
    M.Goran, 1967, The Story of Fritz Haber, Norman, OK: University of Oklahoma Press (includes a complete list of Haber's works).
    LRD

    Biographical history of technology > Haber, Fritz

  • 17 Staudinger, Hermann

    [br]
    b. 23 March 1881 Worms, Germany
    d. 8 September 1965 Freiberg im Breisgau, Germany
    [br]
    German chemist, founder of polymer chemistry.
    [br]
    Staudinger studied chemistry at the universities of Halle, Darmstadt and Munich, originally as a preparation for botanical studies, but chemistry claimed his full attention. He followed an academic career, with professorships at Karlsruhe in 1908, Zurich in 1912 and Freiberg from 1926 until his retirement in 1951. Staudinger began his work as an organic chemist by following well-established lines of research, but from 1920 he struck out in a new direction. Until that time, rubber and other apparently non-crystalline materials with high molecular weight were supposed to consist of a disordered collection of small molecules. Staudinger investigated the structure of rubber and realized that it was made up of very large molecules with many basic groups of atoms held together by normal chemical bonds. Substances formed in this way are known as "polymers". Staudinger's views first met with opposition, but he developed methods of determining the molecular weights of these "high polymers". Finally, the introduction of X-ray crystallographic investigation of chemical structure confirmed his views. This discovery has proved to be the basis of a new branch of chemistry with momentous consequences for industry. From it stemmed the synthetic rubber, plastics, fibres, adhesives and other industries, with all their multifarious applications in everyday life. The Staudinger equation, linking viscosity with molecular weight, is still widely used, albeit with some reservations, in the polymer industry.
    During the 1930s, Staudinger turned his attention to biopolymers and foresaw the discovery some twenty years later that these macromolecules were the building blocks of life. In 1953 he belatedly received the Nobel Prize in Chemistry.
    [br]
    Principal Honours and Distinctions
    Nobel Prize in Chemistry 1953.
    Bibliography
    1961, Arbeitserinnerungen, Heidelberg; pub. in English, 1970 as From Organic Chemistry to Macromolecules, New York (includes a comprehensive bibliography of 644 items).
    Further Reading
    E.Farber, 1963, Nobel Prize Winners in Chemistry, New York.
    R.C.Olby, 1970, "The macromolecular concept and the origins of molecular biology", J. Chem. Ed. 47:168–74.
    LRD

    Biographical history of technology > Staudinger, Hermann

  • 18 Voelcker, John Augustus

    [br]
    b. 24 June 1854 Cirencester, England
    d. 1937 England
    [br]
    English agricultural chemist.
    [br]
    John Augustus Voelcker, as the son of Dr John Christopher Voelcker, grew up in an atmosphere of scientific agriculture and would have had contact with the leading agriculturists of the day. He was educated at University College School and then University College, London, where he obtained both a BA and a BSc Following in his father's footsteps, he studied for his PhD at Giessen University in Germany. At college he enjoyed athletics, an interest he was to pursue for the rest of his life. He decided to take up agricultural chemistry and was to succeed to all the public offices once held by his father, from whom he also took over the directorship of Woburn Farm. The experimental farm had been started in 1876 and was used to study the residual effects of chemicals in the soil. The results of these studies were used as the basis for compensation awards to tenant farmers giving up their farms. Voelcker broadened the range of studies to include trace elements in the soil, but by 1921 the Royal Agricultural Society of England had decided to give up the farm. This was a blow to Voelcker and occurred just before experiments elsewhere highlighted the importance of these elements to healthy plant growth. He continued the research at his own expense until the Rothampsted Experimental Station took over the farm in 1926. Aside from his achievements in Britain, Voelcker undertook a study tour of India in 1890, the report on which led to the appointment of an Agricultural Chemist, and the establishment of a scientific service for the Indian subcontinent.
    [br]
    Principal Honours and Distinctions
    President, Royal Society of Public Analysts. Member of Council, Chemical Society, and Institute of Chemistry. Chairman, Farmers' Club.
    Bibliography
    Most of his publications were in the Journal of the Royal Agricultural Society of England, for which he wrote an annual report, and in another series of reports relating to Woburn Farm. The Improvements of Indian Agriculture was the result of his tour in 1890.
    Further Reading
    Sir E.John Russell, A History of Agricultural Science in Great Britain.
    AP

    Biographical history of technology > Voelcker, John Augustus

  • 19 parado

    adj.
    1 stationary, motionless, at a standstill, still.
    2 standing, upright, on one's feet.
    3 unemployed, out-of-work, workless.
    4 steep.
    5 stuck-up.
    6 foolishly sentimental, drippy.
    7 placed in a vertical position, standing, up-ended, upended.
    past part.
    past participle of spanish verb: parar.
    * * *
    1→ link=parar parar
    1 (quieto) still, motionless
    2 figurado (lento) slow, awkward
    3 (sin trabajo) unemployed
    ► nombre masculino,nombre femenino
    1 unemployed person
    \
    estar parado,-a to be unemployed
    salir bien parado,-a to come off well
    salir mal parado,-a to come off badly
    * * *
    1. (f. - parada)
    noun
    2. (f. - parada)
    adj.
    * * *
    parado, -a
    1. ADJ
    1) (=detenido)

    ¿por qué no nos echas una mano en vez de estar ahí parado? — can't you give us a hand instead of just standing there o around?

    no le gusta estar parado, siempre encuentra algo que hacer — he doesn't like to be idle o doing nothing, he always finds himself something to do

    ¿qué hace ese coche ahí parado? — what's that car doing standing there?

    salida parada — (Dep) standing start

    2) Esp (=sin trabajo) unemployed

    llevo dos años parada — I've been out of work o unemployed for two years

    3) (=desconcertado)

    me dejó parado con lo que me dijo — what he said really took me aback, I was really taken aback by what he said

    4) LAm (=de pie) standing (up)
    - caer parado como los gatos
    5) Esp
    *

    ser parado — (=ser tímido) to be tongue-tied; (=tener poca iniciativa) to be a wimp *

    6) Caribe, Cono Sur (=engreído) vain
    7)

    bien/mal parado: en este libro la mujer queda muy bien parada — women are shown in a good light in this book, women come out well in this book

    salir bien/mal parado: salió mejor parado de lo que cabía esperar — he came out of it better than could be expected

    8) And, Caribe (=afortunado)
    9) Méx, Col
    10) LAm (=hacia arriba) [pelo] stiff; [poste] upright; [orejas] pricked-up
    11) Méx, Ven (=levantado) up, out of bed
    12) Chile (=en huelga) (out) on strike
    2.
    SM / F Esp unemployed person

    Miguel López, un parado de 27 años... — Miguel López, an unemployed, 27-year-old man...

    3. SM
    1) Ven
    2) Méx (=parecido) air, look, resemblance
    * * *
    I
    - da adjetivo
    1)
    a) ( detenido)

    no te quedes ahí parado, ven a ayudarme — don't just stand there, come and help me

    un coche parado en medio de la calle — a car sitting o stopped in the middle of the street

    b) (esp Esp) ( desconcertado)

    se quedó parado, sin saber qué decir — he was taken aback and didn't know what to say

    2) (Esp) ( desempleado) unemployed
    3)
    a) (AmL) ( de pie)

    estar parado — to stand, be standing

    b) (AmL) ( erguido)
    c) (Chi) <cuesta/subida> steep
    4)

    bien/mal parado: salió bastante bien parada del accidente she escaped from the accident pretty much unscathed; salió muy mal parado del accidente he was in a bad way after the accident; salió mal parado de su última inversión he lost a lot of money on his last investment; ha dejado muy mal parados a sus colegas he has left his colleagues in a very difficult situation; estar bien parado con alguien (AmL) to be (well) in with somebody (colloq); es el que mejor parado ha salido — he's the one who's done (the) best out

    5)
    a) (CS fam) ( engreído) stuck up
    b) (Esp fam) ( soso)
    II
    - da masculino, femenino (Esp) unemployed person

    los parados — the unemployed, the people out of work

    * * *
    = stuck, stagnating, unmoving, motionless, stationary.
    Ex. Learn what to do when there is a power outage and how to respond to alarms that signal stuck elevators or that activate security or sprinkler systems.
    Ex. Library budgets have stopped growing in the present climate of a stagnating economy.
    Ex. The dynamic path generation problem of robots in environments with other unmoving and moving objects is considered.
    Ex. In a control condition, participants recited memorized text to the research assistant who sat motionless.
    Ex. In one simple version, known in England as the Scandinavian single platen machine (1841), the press bed and type were stationary throughout.
    ----
    * no salir mal parado por = be none the worse for (that), be none the worse for wear.
    * parados, los = unemployed, the, jobless, the, unwaged, the.
    * permanecer parado = stand + still.
    * quedarse parado = stand + still, stand by.
    * tasa de parados = jobless rate.
    * * *
    I
    - da adjetivo
    1)
    a) ( detenido)

    no te quedes ahí parado, ven a ayudarme — don't just stand there, come and help me

    un coche parado en medio de la calle — a car sitting o stopped in the middle of the street

    b) (esp Esp) ( desconcertado)

    se quedó parado, sin saber qué decir — he was taken aback and didn't know what to say

    2) (Esp) ( desempleado) unemployed
    3)
    a) (AmL) ( de pie)

    estar parado — to stand, be standing

    b) (AmL) ( erguido)
    c) (Chi) <cuesta/subida> steep
    4)

    bien/mal parado: salió bastante bien parada del accidente she escaped from the accident pretty much unscathed; salió muy mal parado del accidente he was in a bad way after the accident; salió mal parado de su última inversión he lost a lot of money on his last investment; ha dejado muy mal parados a sus colegas he has left his colleagues in a very difficult situation; estar bien parado con alguien (AmL) to be (well) in with somebody (colloq); es el que mejor parado ha salido — he's the one who's done (the) best out

    5)
    a) (CS fam) ( engreído) stuck up
    b) (Esp fam) ( soso)
    II
    - da masculino, femenino (Esp) unemployed person

    los parados — the unemployed, the people out of work

    * * *
    = stuck, stagnating, unmoving, motionless, stationary.

    Ex: Learn what to do when there is a power outage and how to respond to alarms that signal stuck elevators or that activate security or sprinkler systems.

    Ex: Library budgets have stopped growing in the present climate of a stagnating economy.
    Ex: The dynamic path generation problem of robots in environments with other unmoving and moving objects is considered.
    Ex: In a control condition, participants recited memorized text to the research assistant who sat motionless.
    Ex: In one simple version, known in England as the Scandinavian single platen machine (1841), the press bed and type were stationary throughout.
    * no salir mal parado por = be none the worse for (that), be none the worse for wear.
    * parados, los = unemployed, the, jobless, the, unwaged, the.
    * permanecer parado = stand + still.
    * quedarse parado = stand + still, stand by.
    * tasa de parados = jobless rate.

    * * *
    parado1 -da
    A
    1
    (detenido, inmóvil): no te quedes ahí parado, ven a ayudarme don't just stand there, come and help me
    ¿qué hace ese coche parado en medio de la calle? what's that car doing sitting o stopped in the middle of the street?
    la producción está parada por falta de materia prima production has stopped o is at a standstill because of a lack of raw materials
    2
    (confuso, desconcertado): se quedó parado, sin saber qué decir he was taken aback and didn't know what to say
    B ( Esp) (desempleado) unemployed
    está parado he's unemployed o out of work
    C
    1
    ( AmL) (de pie): estar parado to stand, be standing
    tuve que viajar parado I had to stand for the whole journey
    no lo dejes ahí parado don't leave him standing there
    2
    ( AmL) (erguido): tengo el pelo todo parado my hair's standing on end
    escuchaba con las orejas paradas she was all ears, she listened carefully
    lo tenía parado or la tenía parada ( fam); he had an erection, he had a hard on ( colloq)
    3 ( Chi) ‹cuesta/subida› steep
    D
    (en una situación): bien/mal parado: salió muy mal parado del accidente he was in a bad way after the accident
    salió bastante bien parada del accidente she escaped from the accident pretty much unscathed o unhurt
    salió mal parado del último negocio en que se metió he lost a lot of money on his last business venture
    ha quedado muy mal parada ante la opinión pública she has been made to look bad in the eyes of the public
    con esas declaraciones ha dejado muy mal parados a sus colegas by saying those things he has left his colleagues in a very difficult situation
    él está muy bien parado con el director ( AmL); he's in o he's well in with the director ( colloq)
    es el que mejor parado ha salido del reparto he's the one who's done (the) best out of the share-out
    E ‹persona›
    1 (CS fam) (engreído) stuck up
    2 ( Esp fam) (soso) drippy ( colloq)
    no seas parada don't be such a drip o wimp
    parado2 -da
    masculine, feminine
    ( Esp) unemployed person
    el número de parados the number of (people) unemployed, the number of people out of work
    * * *

     

    Del verbo parar: ( conjugate parar)

    parado es:

    el participio

    Multiple Entries:
    parado    
    parar
    parado
    ◊ -da adjetivo

    1 ( detenido):
    ◊ un coche parado en medio de la calle a car sitting o stopped in the middle of the street;

    no te quedes ahí parado, ven a ayudarme don't just stand there, come and help me
    2 (AmL)
    a) ( de pie):


    b) ( erguido):


    ver tb See Also→ parar verbo transitivo 2b
    3 (Esp) ( desempleado) unemployed
    4
    ◊ salir (de algo) bien/mal parado (de pelea, discusión) to come off well/badly (in sth);

    es el que mejor parado ha salido he's the one who's come off best
    ■ sustantivo masculino, femenino (Esp) unemployed person;

    parar ( conjugate parar) verbo intransitivo
    1 ( detenerse) to stop;

    ir/venir a parado to end up;
    fue a parado a la cárcel he ended up in prison;
    ¿a dónde habrá ido a parado aquella foto? what can have happened to that photo?;
    ¡a dónde iremos a parado! I don't know what the world's coming to
    2 ( cesar) to stop;

    ha estado lloviendo sin parado it hasn't stopped raining;
    no para quieto ni un momento he can't keep still for a minute;
    no para en casa she's never at home;
    parado DE + INF to stop -ing;
    paró de llover it stopped raining
    3 (AmL) [obreros/empleados] to go on strike
    verbo transitivo
    1
    a) ‹coche/tráfico/persona› to stop;

    ‹motor/máquina› to stop, switch off
    b) ‹ hemorragia› to stanch (AmE), to staunch (BrE)

    c) ‹balón/tiro› to save, stop;

    ‹ golpe› to block, ward off
    2 (AmL)

    b) ( poner vertical) ‹vaso/libro› to stand … up;


    pararse verbo pronominal
    1 ( detenerse)

    b) [reloj/máquina] to stop;

    [coche/motor] to stall;

    2


    se paró en una silla she stood on a chair;
    ¿te puedes parado de cabeza/de manos? can you do headstands/handstands?
    b) (AmL) [ pelo] ( hacia arriba) to stick up;

    ( en los lados) to stick out

    parado,-a
    I adjetivo
    1 (máquina, vehículo, etc) stopped, stationary
    (persona) still: ¡no te quedes parada, haz algo!, don't just stand there, do something!
    2 (sin trabajo) unemployed, out of work
    3 fig (sin iniciativa) slow
    4 (desconcertado) stunned
    5 LAm (de pie) standing
    II sustantivo masculino y femenino unemployed person
    ♦ Locuciones: salir bien/mal parado, to come off well/ badly
    parar
    I verbo intransitivo
    1 to stop: para de saltar, stop jumping
    para un momento en la farmacia, stop a minute at the chemist's
    no pares de hablar, por favor, keep talking, please
    2 (alojarse) to stay
    3 (finalizar, terminar) el cuadro fue a parar al rastro, the painting ended up in the flea market
    II verbo transitivo
    1 to stop
    2 Dep to save
    3 LAm to stand up
    ♦ Locuciones: dónde va a parar, by far: mi hija es muchísmo más inteligente que la suya, dónde va a parar, my daughter is far more intelligent than theirs
    ' parado' also found in these entries:
    Spanish:
    parada
    - seca
    - seco
    - caer
    - quedar
    English:
    dole
    - idle
    - jobless
    - stand about
    - stand around
    - stationary
    - unemployed
    - work
    - foot
    - go
    - have
    - relief
    - stand
    - standing
    - stick
    - stop
    - well
    * * *
    parado, -a
    ♦ adj
    1. [inmóvil] [vehículo] stationary;
    [persona] still, motionless; [fábrica, proyecto] at a standstill o halt;
    ¡no te quedes ahí parado! don't just stand there!
    2. Esp [pasivo] lacking in initiative;
    tu hermano es muy parado your brother lacks initiative
    3. Esp [sin empleo] unemployed, out of work;
    estar parado to be unemployed
    4. Am [en pie] standing;
    estar parado to be standing;
    caer parado to land on one's feet
    5. Am [en posición vertical] standing;
    tenía los pelos parados her hair was on end;
    muy Fam
    tenerlo parado, tenerla parada to have a stiffie;
    Méx Fam
    estar parado de pestañas to be in high dudgeon
    6. Chile, PRico [orgulloso] vain, conceited
    7. Comp
    Am
    está bien parado con el jefe he's well in with the boss;
    salir bien/mal parado de algo: el actual campeón salió muy bien parado en el sorteo the current holder of the title had a lucky draw;
    fue el que mejor parado salió del accidente he was the one who came off best in the accident;
    el conductor salió muy mal parado the driver was badly hurt o injured;
    la imagen de la empresa ha salido muy mal parada the company's image has suffered a serious blow
    ♦ nm,f
    Esp [desempleado] unemployed person;
    los parados the unemployed;
    los parados de larga duración the long-term unemployed
    * * *
    I adj
    1 unemployed
    2 L.Am. (de pie) standing (up)
    3
    :
    quedarse parado stand still;
    salir bien/mal parado come off well/badly;
    II m, parada f unemployed person;
    los parados de larga duración the long-term unemployed
    * * *
    parado, -da adj
    1) : motionless, idle, stopped
    2) : standing (up)
    3) : confused, bewildered
    4)
    bien (mal) parado : in good (bad) shape
    salió bien parado: it turned out well for him
    * * *
    parado1 adj
    1. (desempleado) unemployed
    2. (que no se mueve) not moving
    3. (tímido) shy [comp. shier o shyer; superl. shiest o shyest]
    parado2 n (desempleado) unemployed person

    Spanish-English dictionary > parado

  • 20 Chevreul, Michel Eugène

    SUBJECT AREA: Chemical technology
    [br]
    b. 31 August 1786 Angers, France
    d. 9 April 1889 Paris, France
    [br]
    French chemist who made significant research contributions to scientific knowledge in the field of colour contrast and standardization and demonstrated the chemical nature of fats.
    [br]
    Between 1811 and 1823, Chevreul's work on the fundamental basis of fats led to a great improvement in both the quality of wax candles and in the fats used in the manufacture of soap, and this had considerable advantageous implications for domestic life. The publication of his researches provided the first specific account of the nature of the fats used in the manufacture of soap. His work also led to the development and manufacture of the stearine candle. Stearine was first described by Chevreul in 1814 and was produced by heating glycerine with stearic acid. As early as 1825 M.Gay Lussac obtained a patent in England for making candles from a similar substance. The stearine candle was much more satisfactory than earlier products; it was firmer and gave a brighter light without any accompanying odour. Chevreul became Director of Dyeing in 1824 at the Royal Manufactory of Gobelins, the French national tapestry firm. While there, he carried out research into 1,442 different shades of colour. From 1830 he occupied the Chair of Chemistry at the Muséum d'Histoire Naturelle in Paris.
    [br]
    Further Reading
    G.Bouchard, 1932, Chevreul (biography).
    Albert da Costa, 1962, Michel Eugène Chevreul: Pioneer of Organic Chemistry', Wisconsin: Dept of History, University of Wisconsin.
    DY

    Biographical history of technology > Chevreul, Michel Eugène

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