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1,824 results on '"Waters R"'

356. Design proposal of electrical system for linear generator wave power plants

Author

Bostrom, C., primary, Svensson, O., additional, Rahm, M., additional, Lejerskog, E., additional, Savin, A., additional, Stromstedt, E., additional, Engstrom, J., additional, Gravrakmo, H., additional, Haikonen, K., additional, Waters, R., additional, Bjorklof, D., additional, Johansson, T., additional, Sundberg, J., additional, and Leijon, M., additional

Published
2009
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358. Catch the wave to electricity

Author

Leijon, M., primary, Waters, R., additional, Rahm, M., additional, Svensson, O., additional, Bostrom, C., additional, Stromstedt, E., additional, Engstrom, J., additional, Tyrberg, S., additional, Savin, A., additional, Gravrakmo, H., additional, Bernhoff, H., additional, Sundberg, J., additional, Isberg, J., additional, Agren, O., additional, Danielsson, O., additional, Eriksson, M., additional, Lejerskog, E., additional, Bolund, B., additional, Gustafsson, S., additional, and Thorburn, K., additional

Published
2009
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362. A HIFI preview of warm molecular gas around X Cygni: first detection of H2O emission toward an S-type AGB star

Author

Justtanont, K., Decin, L., Schöier, F. L., Maercker, M., Olofsson, H., Bujarrabal, V., Marston, A.P., Teyssier, D., Alcolea, J., Cernicharo, J., Dominik, C., de Koter, A., Melnick, G., Menten, K., Neufeld, D., Planesas, P., Schmidt, M., Szczerba, R., Waters, R., De Graauw, T., Whyborn, N., Finn, T., Helmich, F., Siebertz, O., Schmülling, F., Ossenkopf, V., Lai, R., Astrophysics, Afd Astrophysics begr 1/1/17, Low Energy Astrophysics (API, FNWI), Astronomy, Astrophysics, and Afd Astrophysics begr 1/1/17

Subjects
CIRCUMSTELLAR WATER-VAPOR, Astronomy, Astrophysics::High Energy Astrophysical Phenomena, stars: kinematics and dynamics, FOS: Physical sciences, Astrophysics, stars: AGB and post-AGB, circumstellar matter, MASS-LOSS RATES, W-HYDRAE, LOSS HISTORY, CARBON STARS, ISO-SWS, Radiative transfer, Astrophysics::Solar and Stellar Astrophysics, Asymptotic giant branch, EVOLVED STARS, Emission spectrum, Spectral resolution, GIANT BRANCH STARS, kinematics and dynamics [stars], stars: individual: chi Cyg, Astrophysics::Galaxy Astrophysics, Line (formation), Physics, Photosphere, Research Programm of Institute for Mathematics, Astrophysics and Particle Physics, stars: late-type, individual: chi Cyg [stars], mass-loss [stars], Astronomy and Astrophysics, Circumstellar envelope, ROTATIONAL LINE-PROFILES, AGB and post-AGB [stars], Astrophysics - Astrophysics of Galaxies, CO, Stars, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, late-type [stars], Astrophysics::Earth and Planetary Astrophysics, stars: mass-loss
Abstract

A set of new, sensitive, and spectrally resolved, sub-millimeter line observations are used to probe the warm circumstellar gas around the S-type AGB star chi Cyg. The observed lines involve high rotational quantum numbers, which, combined with previously obtained lower-frequency data, make it possible to study in detail the chemical and physical properties of, essentially, the entire circumstellar envelope of chi Cyg. The data were obtained using the HIFI instrument aboard Herschel, whose high spectral resolution provides valuable information about the line profiles. Detailed, non-LTE, radiative transfer modelling, including dust radiative transfer coupled with a dynamical model, has been performed to derive the temperature, density, and velocity structure of the circumstellar envelope. We report the first detection of circumstellar H2O rotational emission lines in an S-star. Using the high-J CO lines to derive the parameters for the circumstellar envelope, we modelled both the ortho- and para-H2O lines. Our modelling results are consistent with the velocity structure expected for a dust-driven wind. The derived total H2O abundance (relative to H2) is (1.1 +/- 0.2)E-5, much lower than that in O-rich stars. The derived ortho-to-para ratio of 2.1 +/- 0.6 is close to the high-temperature equilibrium limit, consistent with H2O being formed in the photosphere., 5 pages, 4 figures accepted for publication in A&A HIFI special issue

Published
2010

368. Radical axillary dissection in the staging and treatment of breast cancer

Author

Ball, A. B., Waters, R., Fish, S., and Thomas, J. M.

Subjects
Letter, Lymphatic Metastasis, Axilla, Humans, Lymph Node Excision, Breast Neoplasms, Female, Research Article, Follow-Up Studies, Mammography, Neoplasm Staging
Abstract

The results of 237 radical axillary dissections undertaken by one surgeon in patients with breast cancer were reviewed to evaluate the role of this procedure in staging and treatment. The accuracy of physical examination in detecting axillary metastases was 68%. With a policy of enforced shoulder immobilisation for 10 days postoperatively, the incidence of postoperative wound complications was 8%. There have been three axillary recurrences during a median follow-up period of 44 months (range 6-97 months). Late complications were assessed in 50 patients followed up for greater than 12 months. While eight patients complained of constant swelling of the arm, only three had a difference in arm circumference of greater than 3 cm and only one had persistent limitation of shoulder abduction. Radical axillary dissection ensures accurate clinical staging and provides excellent local control with few complications and without the need for axillary irradiation.

Published
1992

369. Enviro-Shield

Author

Waters, R. C.

Abstract

Aussi disponible en français

Published
1992

396. Defining Bowel Dose Volume Constraints for Bladder Radiotherapy Treatment Planning.

Author

McDonald, F., Waters, R., Gulliford, S., Hall, E., James, N., and Huddart, R.A.

Subjects
*ACADEMIC medical centers, *CLINICAL trials, *LONGITUDINAL method, *PHARMACEUTICAL arithmetic, *RADIOTHERAPY, *RESEARCH funding, *RISK assessment, *STRATEGIC planning, *LOGISTIC regression analysis, *DESCRIPTIVE statistics, *MANN Whitney U Test, BLADDER tumors
Abstract

Aims Increases to radiotherapy dose are constrained by normal tissue effects. The relationship between bowel dose volume data and late bowel toxicity in patients with muscle-invasive bladder cancer treated with radical radiotherapy was assessed. Materials and methods The bowel was contoured retrospectively on radiotherapy plans of 47 patients recruited to the BC2001 trial (CRUK/01/004). The relationship between bowel volume at various dose levels and prospectively collected late bowel toxicity was explored. Results Fifteen per cent and 6% of patients experienced grade 1 and grade 2 or more late bowel toxicity, respectively. The mean bowel volume was significantly less at doses ≥50 Gy in those treated with reduced high dose volume radiotherapy compared with standard radiotherapy. The probability of late bowel toxicity increased as bowel volume increased ( P ≤ 0.05 for dose levels 30–50 Gy). No grade 2 or more late bowel toxicity was observed in patients with bowel volumes under the thresholds given in the model that predict for 25% probability of late bowel toxicity. Conclusions There is a dose volume effect for late bowel toxicity in radical bladder radiotherapy. We have modelled the probability of late bowel toxicity from absolute bowel volumes to guide clinicians in assessing radical bladder radiotherapy plans. Thresholds predicting for a 25% probability of late bowel toxicity are proposed as dose volume constraints. [ABSTRACT FROM AUTHOR]

Published
2015
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