Search

Your search keyword '"O'Brien, D. J."' showing total 176 results
Start Over Author "O'Brien, D. J."
176 results on '"O'Brien, D. J."'

5. Tuberculosis in wild and captive deer.

Author

Palmer, M. V., primary, O'Brien, D. J., additional, Griffin, J. F., additional, Nugent, G., additional, Lisle, G. W. de, additional, Ward, A., additional, and Delahay, R. J., additional

Published
2015
Full Text
View/download PDF

16. Abstracts

Author

Bertram, S. G., Koch, J. P., Dubbin, J. D., Maggisano, R., McKenzie, R. N., Thomson, I. R., Hudson, R. J., Torchia, M., Rosenbloom, M., Wynands, J. E., Ansley, D. M., Bent, J. M., Ramsay, J. G., Whalley, D. G., Ralley, F. E., Carli, F., Smedstad, K. G., Morison, D. H., McCanoll, S. M., Cartwright, P., Weeks, S. K., Donati, F., Michoud, M. C., Amyot, R., Jeanneret-Grosjean, A., Couture, J., McDonald, N. J., Lavelle, P., Harpin, R. P., Gallacher, W. N., Baker, J. P., Kitts, J. B., Veilleux, L. J., McBurney, R., Martineau, R., Bissonnette, B., Lerman, J., Lim, G., Chung, D. C., Plourde, G., Hardy, J. F., Bany, P. P., Tardif, L., Labrecque, P., Archer, D. P., Tyler, J., Meyer, E., Trop, D., Brown, S. C., Lam, A. M., Manninen, P. H., Katz, J. M., Abou-Madi, M., Abou-Madi, N., Woodcock, T. E., Murkin, J. M., Farrar, J. K., Tweed, W. A., Guiraudon, G., McKenzie, F. N., Nadeau, S. G., Robblee, J. R., Mensink, F. J., Kozody, R., Kehler, C. H., Wade, J. G., Bevan, D. R., Baxter, M., Bevan, J. C., McCarroll, S. M., Antzaka, C., McCready, D., Lahoud, J., O’Brien, D. J., Moriarty, D. C., Hope, C. E., Liberman, B. A., Skala, R., Lam, A., Gelb, A., Gelb, A. W., Steinberg, G. K., Neto, A. Rassi, Bellefleur, M., Layon, J., Gallagher, T. J., Berman, L. S., Davidson, D. D., Duke, P. C., Parrott, J., Palahniuk, R. J., Cunningham, A. J., Casey, W., Hannon, V., Litak, C., Ansley, D., Fullerton, H., Ripley, A. R., Sami, M. H., Harrison, L., Robbins, G. R., Fullerton, H. A., Nathan, H. J., Arvieux, C. C., Foëx, P., Ryder, W. A., Jones, L. A., Moffitt, E. A., Mclntyre, A. J., Imrie, D. D., Kinley, C. E., Sullivan, J. A., Murphy, D. A., Cannon, J. E., Morris, A., Robbins, R., Ramsay, J. R., Blaise, G., Sill, J. C., Nugent, M., Vanhoutte, P. M., Moote, C. A., Skinner, M. I., Grace, D. M., Knill, R. L., Johnston, R. G., Anderson, B. J., Noseworthy, T. W., Shustack, A., Forbes, R. B., Kumar, V., Mitros, F. A., Johnson, G. M., Coleman, P., Roth, S., Macnab, M. S. P., Gelb, A. W., Fuller, J., Karlik, S., Diamond, C., Hannallah, R. S., Patel, R. I., Ehrenpreis, M. B., Soliman, I. E., Cunliffe, M., Britt, B. A., Kapsten, J. E., Broadman, L. M., Norrie, W. C., Mundy, G. L., Belman, A. B., Anderson, K. D., Guzetta, P. C., Sharpe, T. D., Goresky, G. V., Sabourin, M. A., Ahuja, B., Eustis, S., Smith, D., Lenis, S., Archer, D., Ravussin, P., Bélisle, S., Saint-Germain, J. F., Chung, F., Meier, R., Lebrun, M., Dubé, S., Côté, C., Byrick, R. J., Howie, G., Kay, J. C., Waddell, J. P., and Mullen, B.

Published
1986
Full Text
View/download PDF

17. Abstracts

Author

Nicholas, J. F., Fuller, J., Frewen, T. C., Lee, R., Broadman, L. M., Soliman, I. E., Hannallah, R. S., McGill, W. A., Tsuneto, S., Yamashita, M., Miyamoto, Y., Badgwell, J. M., McLeod, M. E., Lerman, J., Creighton, R. E., O’Toole, D., McCarroll, S. M., Peyton, M., Cunningham, AJ., Ramsay, J. G., Rajagopalan, B., Harmsen, E., Bore, P., Foëx, P., Radda, G., Blaise, G. A., Lenis, S. G., Sill, C., Vanhoutte, P., Irish, C. L., Murkin, J. M., Guiraudon, G. M, Martineau, R. J., Nadeau, S. G., Montgomery, C. J., Steward, D. J., Chung, D. C., Lam, A. M., Grace, D. M., Gordon, K., Thompson, T., Donati, F., Lahoud, J., Laycock, J. R. D., Bevan, D. R., O’Connor, J. P., Ralley, RE., Katz, J. M., Sami, M. H., Wynands, J. E., Smith, CE., Bevan, D. R., Baxter, M. K., Bevan, J. C., Sangwan, S., Tang, C., Gelb, A. W., Boisvert, D. P., Marchak, E., Lunt, A., Dowman, R., Cowie, N., Kozody, R., McKay, W. P. S., Noble, W. H., Taylor, W. J., Champion, M. C., Barry, A. W., Hurtig, IB., Beland, A., Hollmann, C., Meloche, R., Ringaert, K. R. A., Mutch, W. A. C., Vaghadia, H., Schechter, M. T., Sheps, S. B., Jenkins, L. C., Allen, G. C., Cattran, C. B., Peterson, R. G., Ali, M. J., Byrick, R. J., Salerno, T. A., Baker, C. B., Lichtenstein, S. V., Sharpe, M. J., Merchant, R., Alyafi, W., Penning, D. H., Jhamandas, K., Weingarten, M., Strum, D. P., Eger II, E. I., Gallagher, T. M., Volgyesi, G. A., Miyasaka, K., Burrows, F. A., Johnson, B. H., Murphy, M. R., Szlam, F., Hug, C. C., Martin, D. C., Johnston, J. F., Levin, K. R., Silverstein, P. I., Pruett, J., Bissonnette, B., Scott, A. A., Halpem, S., Rosag, O., Swartz, J., Meeke, R. I., Knill, R. L., Rose, E. A., Soderman, R. M., Milne, B., Cervenko, F., Loomis, C., Murphy, P., Sandler, A. N., Vosu, H., Lau, L. C., Branson, R., Kearney, R. A., Rosales, J. K., Howes, W. J., Wolf, A. R., Fear, D. W., Roy, W. L., Goresky, G. V., Sharpe, T. D. E., Sabourin, MA., Polomeno, R. C., Ryan, B., Evelyn, R., Higgins, T. T., Hannal, R. S., DeSoto, M. H., Nason, S. S., Penning, J. P., Loomis, C. W., Douglas, M. J., McMorland, G. H., Gowan, J. D., Hurtig, J. B., Fraser, R. A., Whalley, D. G., Labrecque, P., Quance, D., Moote, C. A., Lok, P Y. K., Skinner, M. I., Lok, P. Y. K., Scott, W. A. C., Sielecka, D., Slinger, P. D., Lavelle, P. A., Chung, F., McDonald, N. J., McDonald, S., Maltby, J. R., Hutchinson, A., Reid, C. R. G., Whitaker, P. R., Hcin, H. A. T., Arellano, R. J., Cruise, C. J., Lokoff, P., Code, WE., Strunin, L., Manninen, P. H., Macnab, M. S. P., Lam, A., Houston, P. L., tavelle, P., Burns, R., Hall, R. I., Angert, K. C., Reeder, D. A., Moldenhauer, C. C., Teasdale, S., Ralley, F. E., Moffitt, E. A., O’Brien, D. J., Imrie, D. D., Barker, R. A., Sullivan, J. A., Kinley, CE., Block, G., Butlin, G., Sibbald, W., Cunningham, D., Sidi, A., Rush, W. R., Davis, R. F., Bergstrom, R. G., Thomson, I. R., Rosenbloom, M., Meatherall, R. C., Mensink, F. J., Maclntyre, C., Wade, J. G., Ghignone, M., Flynn, N., Cunningham, A. J., Hamilton, R. C., Beauregard, L., Martin, R., Tetrault, J. P., Johnstone, G. K., Clark, A. J. M., Houlton, P. G., Purkis, I. E., Shukla, R. C., Carmichael, F. J., Saldivia, V., Orrego, H., Moote, CA., Smith, M., Drake, H. F., Treasure, T., Olson, J., Strauss, R., Zetterstrom, H., Jonsson, L. O., Forbes, R. B., Albanese, M. A., Murray, D. J., Barcellos, W. A., Slinger, P., Triolet, W., Wilson, J., Berger, J. J., Gravenstein, J. S., McLaughlin, G., Boysen, P. G., Wolf, G. L., Simpson, J. I., Humphrey, D., and Brock-Utne, J. G.

Published
1987
Full Text
View/download PDF

24. Predictors of hepatotoxicity among patients treated with antituberculous medication.

Author

Cusack, R. P., Chawke, L., O’Brien, D. J., O’Connor, B., and O’Connor, T. M.

Abstract

Introduction: Hepatotoxicity in patients diagnosed with active tuberculosis (TB) is the commonest adverse effect of therapy. We sought to analyse trends in liver function in patients diagnosed with active TB and to determine predictors of hepatotoxicity. Methods:We studied 275 patients with active TB treated at the Mercy University Hospital (Cork, Ireland) from 2009 to 2014. A retrospective review was undertaken of all patients’ laboratory data and patient correspondence to determine predictors of hepatotoxicity. Results: A total of 170 (62%) male and 105 (38%) female patients with active TB with a mean age of 44 years were studied. In total 15 patients (6%) required their medication to be stopped or altered as a consequence of hepatotoxicity. There was a significant difference in age between patients with hepatotoxicity (52.95 years) and those that didn’t develop hepatotoxicity (41.33 years) (P ≤ 0.01). Irish born patients were more likely to develop hepatotoxicity (P = 0.025). There was no significant association between hepatotoxicity, illicit drug use (P = 0.211), smoking (P = 0.95), cavitatory disease (P = 0.191), site of disease (p = 0.224), alcohol use (P = 0.088) or history of alcohol excess (p = 0.736). Among patients with TB, peak AST values did not occur within the first 2 weeks as widely thought but later (week 10). Conclusion: Our study shows hepatotoxicity as a consequence of antituberculous therapy is common. Hepatotoxicity was more common in older patients and Irish born patients, and resulted in drug interruptions and treatment changes. Given the late peak in AST values at week 10 in patients treated with antituberculous therapy, the authors advocate that liver function tests should be monitored regularly throughout the course of treatment. [ABSTRACT FROM AUTHOR]

Published
2017
Full Text
View/download PDF

28. Cure-dependent Viscoelastic Poisson's Ratio of Epoxy

Author

ILLINOIS UNIV AT URBANA DEPT OF MECHANICAL AND INDUSTRIAL ENGINEERING, O'Brien, D J, Sottos, N R, White, S R, ILLINOIS UNIV AT URBANA DEPT OF MECHANICAL AND INDUSTRIAL ENGINEERING, O'Brien, D J, Sottos, N R, and White, S R

Abstract

The evolution of the lateral contraction ratio of two commercial (high and low temperature cure) epoxy resins is studied in uniaxial tension using moire' interferometry. The ratio of transverse to axial strains evolves from an elastic value of about 0.40 to a rubbery plateau value of 0.49 at long times. Furthermore, the data indicate that the contraction ratio follows time-temperature superposition with a shift function indistinguishable from other axial viscoelastic functions. The lateral contraction behavior at several cure states past gelation was measured and a model is proposed to describe the cure dependence., Published in the Journal of Experimental Mechanics, v47 p237-249, 2007.

Published
2007

29. Optically Transparent Nanoporous Glasspolymer Composites

Author

ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE, O'Brien, D. J., Juliano, T. F., Patel, P. J., McKnight, S. H., ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE, O'Brien, D. J., Juliano, T. F., Patel, P. J., and McKnight, S. H.

Abstract

Proper design of lightweight laminated composite armor relies on the engineer's ability to specify the acoustic impedance of each layer. In conventional, opaque laminated armor systems, stress waves can be efficiently transmitted throughout the structure with a gradual variation of the acoustic impedance from one layer to the next. In transparent systems, however, the engineer can only choose between monolithic glass, ceramic, or polymer systems, resulting in a large acoustic impedance jump between polymer and ceramic layers. In this work we manufacture a novel transparent polymer-glass composite to be used as an intermediate impedance material. This transparent nanocomposite is created by infiltrating nanoporous glass (Vycor, Corning Inc.) with different polymers. The Vycor pores (4-6 nm) are much smaller than the wavelength of light, thus refractive index matching with the polymer is not necessary for transparency., See also ADM002075., The original document contains color images.

Published
2006

30. Multifunctional Composites with Integrated Optical Busses for Data and Sensing Applications

Author

DELAWARE UNIV NEWARK DEPT OF ELECTRICAL AND COMPUTER ENGINEERING, Tietelbaum, M., O'Brien, D. J., Wells, N. D., Yarlagadda, S., Wetzel, E. D., Goossen, K. W., DELAWARE UNIV NEWARK DEPT OF ELECTRICAL AND COMPUTER ENGINEERING, Tietelbaum, M., O'Brien, D. J., Wells, N. D., Yarlagadda, S., Wetzel, E. D., and Goossen, K. W.

Abstract

Embedded communication busses are being widely investigated for complex composite structures such as military vehicles and advanced civil structures. The major difficulty with such busses is coupling external devices to embedded optical and electrical cables at ingress/egress points because physical connectors are awkward and prone to mechanical failure. In this work we present several techniques for normal incidence free-space optical data porting. These techniques are used to develop and demonstrate an integrated structural optical communication bus., See also ADM002075. Presented at the Army Science Conference (25th) held in Orlando, FL, on 27-30 Nov 2006. Prepared in collaboration with Army Research Laboratory, Aberdeen, MD, and Winona State University, Winona, MN. The original document contains color images.

Published
2006

36. Small field detector correction factors kfclin,fmsrQclin,Qmsr for silicon-diode and diamond detectors with circular 6 MV fields derived using both empirical and numerical methods.

Author

O'Brien, D. J., León Vintró, L., and McClean, B.

Subjects
*RADIOTHERAPY, *MONTE Carlo method, *RADIATION dosimetry, *SILICON diodes, *DIAMONDS, *EMPIRICAL research
Abstract

Purpose: The use of radiotherapy fields smaller than 3 cm in diameter has resulted in the need for accurate detector correction factors for small field dosimetry. However, published factors do not always agree and errors introduced by biased reference detectors, inaccurate Monte Carlo models, or experimental errors can be difficult to distinguish. The aim of this study was to provide a robust set of detector-correction factors for a range of detectors using numerical, empirical, and semiempirical techniques under the same conditions and to examine the consistency of these factors between techniques. Methods: Empirical detector correction factors were derived based on small field output factor measurements for circular field sizes from 3.1 to 0.3 cm in diameter performed with a 6 MV beam. A PTW 60019 microDiamond detector was used as the reference dosimeter. Numerical detector correction factors for the same fields were derived based on calculations from a GEANT 4 Monte Carlo model of the detectors and the Linac treatment head. Semiempirical detector correction factors were derived from the empirical output factors and the numerical dose-to-water calculations. Results: The PTW 60019 microDiamond was found to over-respond at small field sizes resulting in a bias in the empirical detector correction factors. The over-response was similar in magnitude to that of the unshielded diode. Good agreement was generally found between semiempirical and numerical detector correction factors except for the PTW 60016 Diode P, where the numerical values showed a greater over-response than the semiempirical values by a factor of 3.7% for a 1.1 cm diameter field and higher for smaller fields. Conclusions: Detector correction factors based solely on empirical measurement or numerical calculation are subject to potential bias. A semiempirical approach, combining both empirical and numerical data, provided the most reliable results. [ABSTRACT FROM AUTHOR]

Published
2016
Full Text
View/download PDF

47. Lymphovascular space involvement in early stage well-differentiated endometrial cancer is associated with increased mortality.

Author

O'Brien, D. J., Flannelly, G., Mooney, E. E., and Foley, M.

Subjects
*CANCER, *ENDOMETRIUM, *DEATH, *ADENOCARCINOMA, *HOSPITALS
Abstract

Objective To study the relationship between lymphovascular space involvement (LVSI) in stage 1a or 1b well-differentiated endometrial cancer and survival. Design Retrospective study consisting of a search of an oncology database to identify women with endometrial cancer between January 1990 and December 2004. Setting Tertiary referral centre, Dublin, Ireland. Sample Women who had well-differentiated stage 1a or 1b endometrial cancer. Methods During the period 1990–2004, 226 patients with endometrial cancer were treated in the National Maternity Hospital, Dublin. We looked at all patients who had well-differentiated endometrioid adenocarcinoma of the endometrium with invasion of <50% thickness of the myometrium. Forty-one patients fulfilled these inclusion criteria. The presence or absence of LSVI was determined by review of haematoxylin and eosin sections. Patients were followed for 5 years or till death if earlier. Mortality was calculated. Statistical analysis was performed using Fisher’s exact test. An odds ratio and 95% confidence interval was calculated using fixed effect Mantel–Haenszel model. Main outcome measures Death from recurrence of endometrial cancer. Results Of the 41 patients, five (12%) were found to have (LVSI). Of the five patients with LVSI, three (60%) patients died of recurrence. All patients with recurrence died of disease and none of the patients without LVSI died (0 of 36). Overall, the survival rate was 92.7%. The presence of LVSI was a highly significant predictor of recurrence ( P < 0.001). Conclusion In patients with early stage well-differentiated adenocarcinoma of the endometrium, the presence of LVSI is associated with a high risk of death. [ABSTRACT FROM AUTHOR]

Published
2009
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results