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Träfflista för sökning "WFRF:(Kim J) srt2:(1990-1994)"

Sökning: WFRF:(Kim J) > (1990-1994)

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1.
  • Szymanski, J. J., et al. (författare)
  • MEGA : A search for the decay mu –> e gamma
  • 1994
  • Ingår i: Intersections between particle and nuclear physics. Proceedings, 5th Conference, St. Petersburg, USA, May 31-June 6, 1994. ; , s. 789-792
  • Konferensbidrag (refereegranskat)
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2.
  • Amann, F., et al. (författare)
  • A search for murarregamma at the level of 10-13
  • 1991
  • Ingår i: Proceedings of the 25th International Conference on High Energy Physics. - 9810024347 ; , s. 1070-1071
  • Konferensbidrag (refereegranskat)abstract
    • The MEGA experiment, which is a search for the decay murarregamma with a branching ratio sensitivity of about 10-13, employs highly modular, fast detectors, state-of-the-art electronics, and a staged trigger with on-line filters. The detectors are contained in a 1.5-T solenoidal field produced by a superconducting magnet. Positrons are confined to the central region and are measured by a set of thin MWPCs. Photons are measured by one of four layers of pair spectrometers in the outer region. Most aspects of the design have been validated in engineering runs; data taking will begin in 1990 with much of the electron arm and one pair spectrometer layer installed.
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4.
  • Sehlstedt, Ulrika, et al. (författare)
  • Interaction of Cationic Porphyrins with DNA
  • 1994
  • Ingår i: Biochemistry. - : American Chemical Society (ACS). - 0006-2960 .- 1520-4995. ; 33:2, s. 417-426
  • Tidskriftsartikel (refereegranskat)
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5.
  • Jacobsen, Steven J., et al. (författare)
  • Comparability of the tandem-R andIMx assays for the measurement of serum prostate-specific antigen
  • 1994
  • Ingår i: Urology. - 0090-4295. ; 44:4, s. 512-518
  • Tidskriftsartikel (refereegranskat)abstract
    • Objectives.: To assess the comparability of the Tandem-R and IMx serumprostate-specific antigen (PSA) assays across levels of the ratio of free-to-total serum PSA found in a community-based population of healthy men. Methods.: Banked serum samples from the baseline component of the Olmsted CountyStudy of Urinary Symptoms and Health Status Among Men were thawed and analyzed using the Tandem-R and IMx PSA assays. Serum levels also were determined for the free, noncomplexed form of PSA, PSA complexed to alpha-1 antichymotrypsin, and total PSA with a research-based immunofluorometric assay. Results.: The results of the Tandem-R and IMx assays were strongly correlated at alllevels of the ratio of free-to-total serum PSA. The Spearman correlation coefficients ranged from 0.87 to 0.98 (all p < 0.001). The relationship between the Tandem-R and IMx assays, however, differed at low levels of free-to-total serum PSA compared with high levels. In the lowest 10th percentile of the ratio of free-to-total serum PSA (0.04 to 0.18), the IMx assay read lower than the Tandem-R (slope ± standard error = 0.92±0.04, intercept ± standard error = 0.21 ± 0.14); whereas in the upper 10th percentile of free-to-total ratio (0.46 to 0.65) the IMx assay yielded values higher than the Tandem-R assay (slope = 1.21 ± 0.07, intercept = 0.14 ± 0.05). In the middle 90%, the slope did not statistically differ from 1.0. Conclusions.: For the majority of men, results of the Tandem-R and IMx PSA assays were virtually identical. The small differences found would not be of clinical significance for most men but should be considered when comparing results of different assays in sequential determinations for a specific man.
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7.
  • Kim, Y J, et al. (författare)
  • A multiprotein mediator of transcriptional activation and its interaction with the C-terminal repeat domain of RNA polymerase II.
  • 1994
  • Ingår i: Cell. - 0092-8674 .- 1097-4172. ; 77:4, s. 599-608
  • Tidskriftsartikel (refereegranskat)abstract
    • A mediator was isolated from yeast that enabled a response to the activator proteins GAL4-VP16 and GCN4 in a transcription system reconstituted with essentially homogeneous basal factors and RNA polymerase II. The mediator comprised some 20 polypeptides, including the three subunits of TFIIF and other polypeptides cross-reactive with antisera against GAL11, SUG1, SRB2, SRB4, SRB5, and SRB6 proteins. Mediator not only enabled activated transcription but also conferred 8-fold greater activity in basal transcription and 12-fold greater efficiency of phosphorylation of RNA polymerase II by the TFIIH-associated C-terminal repeat domain (CTD) kinase, indicative of mediator-CTD interaction. A holoenzyme form of RNA polymerase II was independently isolated that supported a response to activator proteins with purified basal factors. The holoenzyme proved to consist of mediator associated with core 12-subunit RNA polymerase II.
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