ultracentrifugen.

Brit.

/ˌʌltrəˈsɛntrᵻfjuː(d)ʒ/, U.S.

/ˌəltrəˈsɛntrəˌfjudʒ/

Etymology: < ultra- prefix 2d + centrifuge n.

A very high-speed centrifuge, now usually generating over 100,000g, used to separate small particles and large molecules in a liquid and to determine their sedimentation rate (and hence their size).

ΘΚΠ

the world > matter > chemistry > chemical assay or analytical chemistry > [noun] > acetimetry > centrifugation > ultracentrifugation > apparatus

ultracentrifuge1924

1924 Svedberg & Rinde in Jrnl. Amer. Chem. Soc. XLVI. 2678 In analogy with the naming of the ultra~microscope and ultra-filtration apparatus we propose the name ultra-centrifuge for this apparatus.

1939 Ann. Reg. 1938 374 The ultracentrifuge showed the presence in plant juices of carbohydrates of well-defined molecular weight.

1948 New Biol. 5 33 Tiny air-driven turbine ultra-centrifuges which rotate at speeds up to 5,000 revolutions per second, giving forces equal to half a million times that of gravity, will stratify many of the finest cell inclusions.

1968 New Scientist 3 Oct. 6/3 A pilot plant for enriching uranium by the ultracentrifuge method.

1978 H. McLeave Borderline Case (1979) xiii. 132 The laboratory..had everything, including..several ultracentrifuges.

Derivatives

ˌultracentrifugal adj. (stress variable) involving or employing an ultracentrifuge.

ΘΚΠ

the world > matter > chemistry > chemical assay or analytical chemistry > [adjective] > of specific types > having undergone centrifugation > involving ultracentrifugation

ultracentrifugal1930

ultracentrifuged1947

1930 Jrnl. Amer. Chem. Soc. 52 2904 The ultracentrifugal study of gelatin solutions has been fruitful in revealing the heterogeneous nature of the sols.

1962 M. Rabaey in A. Pirie Lens Metabolism 310 Ultracentrifugal analysis permitted us to classify this protein as a member of the so-called group of β-crystallins.

1977 Lancet 8 Oct. 742/1 A typical ultra~centrifugal scan and the distribution of IgE in the corresponding fractions is shown.

ˌultracentrifugally adv. (stress variable) by means of an ultracentrifuge; with respect to the ultracentrifuge.

ΘΚΠ

the world > matter > chemistry > chemical assay or analytical chemistry > [adverb] > by process of specific types of chemical analysis > by means of ultracentrifugation

ultracentrifugally1943

1943 Jrnl. Exper. Med. 77 460 Gratia and Paillot had reported polyhedral bodies and ultracentrifugally purified material from jaundiced blood to be serologically unrelated to ultracentrifugally purified material from the blood of normal silkworms.

1953 Jrnl. Amer. Chem. Soc. 75 67/2 Recently they succeeded in preparing an electrophoretically and ultracentrifugally homogeneous mucoprotein.

This entry has not yet been fully updated (first published 1986; most recently modified version published online March 2022).

ultracentrifugev.

Brit.

/ˌʌltrəˈsɛntrᵻfjuː(d)ʒ/, U.S.

/ˌəltrəˈsɛntrəˌfjudʒ/

Etymology: < ultracentrifuge n.: compare centrifuge v.

transitive. To spin in an ultracentrifuge.

ΘΚΠ

the world > matter > chemistry > chemical assay or analytical chemistry > analyse chemically [verb (transitive)] > by process of specific types of chemical analysis > subject to centrifugation > specific to ultracentrifugation

ultracentrifuge1946

1946 Nature 5 Oct. 488/2 Virus can be separated by differential ultracentrifuging into fractions with widely different properties.

1977 Lancet 8 Oct. 742/1 The distribution of radioactivity in a radiolabelled (¹²⁵I) myeloma IgE preparation ultracentrifuged under identical conditions.

Derivatives

ˌultracentrifuˈgation n. the action or process of ultracentrifuging.

ΘΚΠ

the world > matter > chemistry > chemical assay or analytical chemistry > [noun] > acetimetry > centrifugation > ultracentrifugation

ultracentrifuging1934

ultracentrifugation1936

1936 Trans. Faraday Soc. 32 301 In this case again, analogous to those of viscometry and ultracentrifugation, the dilutest solutions yield the clearest result.

1971 Nature 18 June 447/1 The extract was spun at 25,000g for 20 min to remove large particles before being subjected to ultracentrifugation at 105,000g for 90 min to sediment out the microsomes and membrane fractions.

ultraˈcentrifuged adj.

ΘΚΠ

the world > matter > chemistry > chemical assay or analytical chemistry > [adjective] > of specific types > having undergone centrifugation > involving ultracentrifugation

ultracentrifugal1930

ultracentrifuged1947

1947 Ann. Rev. Microbiol. 1 364 Ultracentrifuged concentrates of virus.

1974 Nature 13 Dec. 605/2 The injection of adult mice with ultracentrifuged heterologous γ globulin induces immunological unresponsiveness to a subsequent injection of the globulin.

ultraˈcentrifuging n.

ΘΚΠ

the world > matter > chemistry > chemical assay or analytical chemistry > [noun] > acetimetry > centrifugation > ultracentrifugation

ultracentrifuging1934

ultracentrifugation1936

1934 Proc. Soc. Exper. Biol. & Med. 1933–4 31 707 (heading) Effect of ultracentrifuging on Paramecium.

This entry has not yet been fully updated (first published 1986; most recently modified version published online March 2022).

单词	ultracentrifuge
释义	ultracentrifugen. Brit. /ˌʌltrəˈsɛntrᵻfjuː(d)ʒ/, U.S. /ˌəltrəˈsɛntrəˌfjudʒ/ Etymology: < ultra- prefix 2d + centrifuge n. A very high-speed centrifuge, now usually generating over 100,000g, used to separate small particles and large molecules in a liquid and to determine their sedimentation rate (and hence their size). ΘΚΠ the world > matter > chemistry > chemical assay or analytical chemistry > [noun] > acetimetry > centrifugation > ultracentrifugation > apparatus ultracentrifuge1924 1924 Svedberg & Rinde in Jrnl. Amer. Chem. Soc. XLVI. 2678 In analogy with the naming of the ultra~microscope and ultra-filtration apparatus we propose the name ultra-centrifuge for this apparatus. 1939 Ann. Reg. 1938 374 The ultracentrifuge showed the presence in plant juices of carbohydrates of well-defined molecular weight. 1948 New Biol. 5 33 Tiny air-driven turbine ultra-centrifuges which rotate at speeds up to 5,000 revolutions per second, giving forces equal to half a million times that of gravity, will stratify many of the finest cell inclusions. 1968 New Scientist 3 Oct. 6/3 A pilot plant for enriching uranium by the ultracentrifuge method. 1978 H. McLeave Borderline Case (1979) xiii. 132 The laboratory..had everything, including..several ultracentrifuges. Derivatives ˌultracentrifugal adj. (stress variable) involving or employing an ultracentrifuge. ΘΚΠ the world > matter > chemistry > chemical assay or analytical chemistry > [adjective] > of specific types > having undergone centrifugation > involving ultracentrifugation ultracentrifugal1930 ultracentrifuged1947 1930 Jrnl. Amer. Chem. Soc. 52 2904 The ultracentrifugal study of gelatin solutions has been fruitful in revealing the heterogeneous nature of the sols. 1962 M. Rabaey in A. Pirie Lens Metabolism 310 Ultracentrifugal analysis permitted us to classify this protein as a member of the so-called group of β-crystallins. 1977 Lancet 8 Oct. 742/1 A typical ultra~centrifugal scan and the distribution of IgE in the corresponding fractions is shown. ˌultracentrifugally adv. (stress variable) by means of an ultracentrifuge; with respect to the ultracentrifuge. ΘΚΠ the world > matter > chemistry > chemical assay or analytical chemistry > [adverb] > by process of specific types of chemical analysis > by means of ultracentrifugation ultracentrifugally1943 1943 Jrnl. Exper. Med. 77 460 Gratia and Paillot had reported polyhedral bodies and ultracentrifugally purified material from jaundiced blood to be serologically unrelated to ultracentrifugally purified material from the blood of normal silkworms. 1953 Jrnl. Amer. Chem. Soc. 75 67/2 Recently they succeeded in preparing an electrophoretically and ultracentrifugally homogeneous mucoprotein. This entry has not yet been fully updated (first published 1986; most recently modified version published online March 2022). ultracentrifugev. Brit. /ˌʌltrəˈsɛntrᵻfjuː(d)ʒ/, U.S. /ˌəltrəˈsɛntrəˌfjudʒ/ Etymology: < ultracentrifuge n.: compare centrifuge v. transitive. To spin in an ultracentrifuge. ΘΚΠ the world > matter > chemistry > chemical assay or analytical chemistry > analyse chemically [verb (transitive)] > by process of specific types of chemical analysis > subject to centrifugation > specific to ultracentrifugation ultracentrifuge1946 1946 Nature 5 Oct. 488/2 Virus can be separated by differential ultracentrifuging into fractions with widely different properties. 1977 Lancet 8 Oct. 742/1 The distribution of radioactivity in a radiolabelled (¹²⁵I) myeloma IgE preparation ultracentrifuged under identical conditions. Derivatives ˌultracentrifuˈgation n. the action or process of ultracentrifuging. ΘΚΠ the world > matter > chemistry > chemical assay or analytical chemistry > [noun] > acetimetry > centrifugation > ultracentrifugation ultracentrifuging1934 ultracentrifugation1936 1936 Trans. Faraday Soc. 32 301 In this case again, analogous to those of viscometry and ultracentrifugation, the dilutest solutions yield the clearest result. 1971 Nature 18 June 447/1 The extract was spun at 25,000g for 20 min to remove large particles before being subjected to ultracentrifugation at 105,000g for 90 min to sediment out the microsomes and membrane fractions. ultraˈcentrifuged adj. ΘΚΠ the world > matter > chemistry > chemical assay or analytical chemistry > [adjective] > of specific types > having undergone centrifugation > involving ultracentrifugation ultracentrifugal1930 ultracentrifuged1947 1947 Ann. Rev. Microbiol. 1 364 Ultracentrifuged concentrates of virus. 1974 Nature 13 Dec. 605/2 The injection of adult mice with ultracentrifuged heterologous γ globulin induces immunological unresponsiveness to a subsequent injection of the globulin. ultraˈcentrifuging n. ΘΚΠ the world > matter > chemistry > chemical assay or analytical chemistry > [noun] > acetimetry > centrifugation > ultracentrifugation ultracentrifuging1934 ultracentrifugation1936 1934 Proc. Soc. Exper. Biol. & Med. 1933–4 31 707 (heading) Effect of ultracentrifuging on Paramecium. This entry has not yet been fully updated (first published 1986; most recently modified version published online March 2022). < n.1924v.1934
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