Université de Sherbrooke

About: Université de Sherbrooke is a education organization based out in Sherbrooke, Quebec, Canada. It is known for research contribution in the topics: Population & Receptor. The organization has 14922 authors who have published 28783 publications receiving 792511 citations. The organization is also known as: Universite de Sherbrooke & Sherbrooke University.

Effects of age, sex, disease, and density on survival of bighorn sheep

Abstract: Longitudinal studies of survival are valuable because age-specific survival affects population dynamics and the evolution of several life history traits. We used capture–mark–recapture models to assess the relationship between survival and sex, age, population, year of study, disease, winter weather, and population density in two populations of bighorn sheep (Ovis canadensis) in Alberta, Canada. The Ram Mountain population, monitored for 20 yr, more than doubled in density; the Sheep River population, monitored for 13 yr, experienced a pneumonia epizootic. Yearling survival varied among years and was lower than that of older sheep of the same sex, except for yearling males at Ram Mountain. Yearling females at Ram Mountain were the only sex-age class exhibiting density dependence in survival. Senescence was evident for both sexes in both populations. Female survival from age 2 to age 7 was very high in both populations, but males aged 2 and 3 yr enjoyed better survival than males aged 4–6 yr. Our data support the suggestion that where hunters remove many males older than 5 yr of age, the natural mortality of males increases at 3–5 yr, possibly because young males suffer a mortality cost of participating in rutting activity. The decline in survival for sheep older than 7 yr was greater for males than for females. Survival was lower for males than for females, both among prime-aged sheep (0.896 vs. 0.939 at Sheep River; 0.837 vs. 0.945 at Ram Mountain) and among older sheep (0.777 vs. 0.859 at Sheep River; 0.624 vs. 0.850 at Ram Mountain), but not among yearlings. Survival of sheep aged 2–7 yr was not significantly different between the two populations. Winter weather did not affect survival. Survival of sheep 2 yr of age and older did not vary significantly between years, except at Sheep River where survival of prime-aged sheep of both sexes was lower in the year of the pneumonia epizootic. Studies of survival of mountain sheep based upon skull collections may have overestimated survival of young rams. Our results underline the need for accurate information on age-specific survival.

Measuring individual differences in reaction norms in field and experimental studies: a power analysis of random regression models

Abstract: Summary 1. Interest in measuring individual variation in reaction norms using mixed-effects and, more specifically, random regression models have grown apace in the last few years within evolution and ecology. However, these are data hungry methods, and little effort to date has been put into understanding how much and what kind of data we need to collect in order to apply these models usefully and reliably. 2. We conducted simulations to address three central questions. First, what is the best sampling strategy to collect sufficient data to test for individual variation using random regression models? Second, on occasions when precision is difficult to assess, can we be confident that a failure to detect significant variance in plasticity using random regression represents a biological reality rather than a lack of statistical power? Finally, does the common practice of censoring individuals with one or few repeated measures improve or reduce power to estimate individual variation in random regressions? 3. We have also developed a series of easy-to-use functions in the ‘pamm’ statistical package for R, which is freely available, that will allow researchers to conduct similar power analyses tailored more specifically to their own data. 4. Our results reveal potentially useful rules of thumb: large data sets (N > 200) are needed to evaluate the variance of individual-specific slopes; a number of individuals ⁄ number of observations per individual ratio of approximately 0AE5 consistently yielded the highest power to detect random effects; individuals with one or few observations should not generally be censored as this reduces power to detect variance in plasticity. 5. We discuss the wider implications of these simulations and remaining challenges and suggest a new way to standardize results that would better facilitate the comparison of findings across empirical studies.

Precursors of solvated electrons in radiobiological physics and chemistry.

Abstract: s; Proceeding of IX ECSBM, Prague, Czech Republic, 2001. (176) Abouaf, R.; Pommier, J.; Dunet, H. Int. J. Mass Spectrom. 2003, 226, 397. (177) Denifl, S.; Ptasin ́ska, S.; Cingel, M.; Matejcik, S.; Scheier, P.; Mar̈k, T. D. Chem. Phys. Lett. 2003, 377, 74. (178) Gohlke, S.; Abdoul-Carime, H.; Illenberger, E. Chem. Phys. Lett. 2003, 380, 595. (179) Abdoul-Carime, H.; Gohlke, S.; Illenberger, E. Phys. Rev. Lett. 2004, 92, 168103. (180) Ptasin ́ska, S.; Denifl, S.; Grill, V.; Mar̈k, T. D.; Scheier, P.; Gohlke, S.; Huels, M. A.; Illenberger, E. Angew. Chem., Int. Ed. 2005, 44, 1657. (181) Aflatooni, K.; Gallup, G. A.; Burrow, P. D. J. Phys. Chem. A 1998, 102, 6205. (182) Burrow, P. D.; Gallup, G. A.; Scheer, A. M.; Denifl, S.; Ptasinska, S.; Mar̈k, T. D.; Scheier, P. J. Chem. Phys. 2006, 124, 124310. (183) Aflatooni, K.; Scheer, A. M.; Burrow, P. D. Chem. Phys. Lett. 2005, 408, 426. (184) Naaman, R.; Sanche, L. Chem. Rev. 2007, 107, 1553. (185) Li, X.; Sevilla, M. D.; Sanche, L. J. Phys. Chem. B 2004, 108, 19013. (186) Ptasin ́ska, S.; Denifl, S.; Mroź, B.; Probst, M.; Grill, V.; Illenberger, E.; Scheier, P.; Mar̈k, T. D. J. Chem. Phys. 2005, 123, 124302. (187) Li, Z.; Cloutier, P.; Sanche, L.; Wagner, J. R. J. Phys. Chem. B 2011, 115, 13668. (188) Li, X.; Sevilla, M. D.; Sanche, L. J. Phys. Chem. B 2004, 108, 5472. (189) Ptasin ́ska, S.; Denifl, S.; Scheier, P.; Illenberger, E.; Mar̈k, T. D. Angew. Chem., Int. Ed. 2005, 44, 6941. (190) Zheng, Y.; Cloutier, P.; Hunting, D. J.; Wagner, J. R.; Sanche, L. J. Am. Chem. Soc. 2004, 126, 1002. (191) Huels, M. A.; Parenteau, L.; Michaud, M.; Sanche, L. Phys. Rev. A 1995, 51, 337. (192) Abdoul-Carime, H.; Cloutier, P.; Sanche, L. Radiat. Res. 2001, 155, 625. (193) Baccarelli, I.; Bald, I.; Gianturco, F. A.; Illenberger, E.; Kopyra, J. Phys. Rep. 2011, 508, 1. (194) Ptasin ́ska, S.; Denifl, S.; Scheier, P.; Mar̈k, T. D. J. Chem. Phys. 2004, 120, 8505. (195) Antic, D.; Parenteau, L.; Lepage, M.; Sanche, L. J. Phys. Chem. 1999, 103, 6611. (196) Antic, D.; Parenteau, L.; Sanche, L. J. Phys. Chem. B 2000, 104, 4711. (197) Huels, M. A.; Parenteau, L.; Sanche, L. J. Phys. Chem. B 2004, 108, 16303. (198) Pan, X.; Sanche, L. Chem. Phys. Lett. 2006, 421, 404. (199) Pan, X.; Sanche, L. Phys. Rev. Lett. 2005, 94, 198104. (200) Sulzer, P.; Mauracher, A.; Denifl, S.; Zappa, F.; Ptasin ́ska, S.; Beikircher, M.; Bacher, A.; Wendt, N.; Aleem, A.; Rondino, F.; Matejcik, S.; Probst, M.; Mar̈k, T. D.; Scheier, P. Anal. Chem. 2007, 79, 6585. (201) Gu, J.; Xie, Y.; Schaefer, H. F. Chem.Eur. J. 2010, 16, 5089. (202) Zheng, Y.; Cloutier, P.; Hunting, D. J.; Sanche, L.; Wagner, J. R. J. Am. Chem. Soc. 2005, 127, 16592. (203) Zheng, Y.; Wagner, J. R.; Sanche, L. Phys. Rev. Lett. 2006, 96, 208101. (204) Zheng, Y.; Cloutier, P.; Hunting, D. J.; Wagner, J. R.; Sanche, L. J. Chem. Phys. 2006, 124, 9. (205) Huels, M.; Boudaïffa, B.; Cloutier, P.; Hunting, D. J.; Sanche, L. J. Am. Chem. Soc. 2003, 125, 4467. (206) Boudaïffa, B.; Hunting, D. J.; Cloutier, P.; Huels, M. A.; Sanche, L. Int. J. Radiat. Biol. 2000, 76, 1209. (207) Boudaïffa, B.; Cloutier, P.; Hunting, D. J.; Huels, M. A.; Sanche, L. Med. Sci 2000, 16, 1281. (208) Martin, F.; Burrow, P. D.; Cai, Z.; Cloutier, P.; Hunting, D. J.; Sanche, L. Phys. Rev. Lett. 2004, 93, 068101. (209) Panajotovic, R.; Martin, F.; Cloutier, P.; Hunting, D. J.; Sanche, L. Radiat. Res. 2006, 165, 452. (210) Li, X.; Sevilla, M. D.; Sanche, L. J. Am. Chem. Soc. 2003, 125, 13668. (211) Simons, J. Acc. Chem. Res. 2006, 39, 772. (212) Bao, X.; Wang, J.; Gu, J.; Leszczynski, J. Proc. Natl. Acad. Sci. U.S.A. 2006, 103, 5658. (213) Caron, L.; Sanche, L. Phys. Rev. A: At., Mol. Opt. Phys. 2004, 70, 032719. (214) Caron, L. G.; Sanche, L. In Low-energy Electron Scattering from Molecules, Biomolecules and Surfaces; Čaŕsky, P., Čurík, R., Eds.; CRC Press (Taylor and Francis Group): Boca Raton, FL, 2012; pp 161− 230. (215) Lin, S. D. Radiat. Res. 1974, 59, 521. (216) Abdoul-Carime, H.; Sanche, L. Radiat. Res. 2003, 160, 86. (217) Abdoul-Carime, H.; Sanche, L. J. Phys. Chem. B 2004, 108, 457. (218) Abdoul-Carime, H.; Cecchini, S.; Sanche, L. Radiat. Res. 2002, 158, 23. (219) Ptasin ́ska, S.; Denifl, S.; Candor, P.; Matejcik, S.; Scheier, P.; Mar̈k, T. D. Chem. Phys. Lett. 2005, 403, 107. (220) Abdoul-Carime, H.; Gohlke, S.; Illenberger, E. Chem. Phys. Lett. 2005, 402, 497. (221) Gohlke, S.; Rosa, A.; Illenberger, E.; Brüning, F.; Huels, M. A. J. Chem. Phys. 2002, 116, 10164. (222) Ptasin ́ska, S.; Denifl, S.; Abedi, A.; Scheier, P.; Mar̈k, T. D. Anal. Bioanal. Chem. 2003, 377, 1115. (223) Abdoul-Carime, H.; Illenberger, E. Chem. Phys. Lett. 2004, 397, 309. (224) Sulzer, P.; Alizadeh, E.; Mauracher, A.; Scheier, P.; Mar̈k, T. D. Int. J. Mass. Spectrom. 2008, 277, 274. (225) Abdoul-Carime, H.; Gohlke, S.; Illenberger, E. Phys. Chem. Chem. Phys. 2004, 6, 161. (226) Alizadeh, E. Dissociative Electron Attachment to Biomolecules. Ph.D Thesis, University of Innsbruck, Innsbruck, Austria, August 2009. (227) Alizadeh, E.; Gschliesser, D.; Bartl, P.; Edtbauer, A.; Vizcaino, V.; Mauracher, A.; Probst, M.; Mar̈k, T. D.; Ptasin ́ska, S.; Mason, N. J.; Denifl, S.; Scheier, P. J. Chem. Phys. 2011, 134, 054305. (228) Vasil’ev, Y. V.; Figard, B. J.; Barofsky, D. F.; Deinzer, M. L. J. Am. Chem. Soc. 2007, 268, 106. (229) Cloutier, P.; Sicard-Roselli, C.; Escher, E.; Sanche, L. J. Phys. Chem. B 2007, 111, 1620. (230) Ptasin ́ska, S.; Li, Z.; Mason, N. J.; Sanche, L. Phys. Chem. Chem. Phys. 2010, 12, 9367. (231) Wang, J.; Gu, J.; Leszczynski, J. Chem. Phys. Lett. 2007, 442, 124. (232) Ptasin ́ska, S.; Sanche, L. Phys. Rev. E 2007, 75, 031915. (233) Falk, M.; Hartman, K. A.; Lord, R. C. J. Am. Chem. Soc. 1963, 85, 387. (234) Orlando, T. M.; Oh, D.; Chen, Y.; Aleksandrov, A. B. J. Chem. Phys. 2008, 128, 195102. (235) Dumont, A.; Zheng, Y.; Hunting, D.; Sanche, L. J. Chem. Phys. 2010, 132, 045102. (236) Solomun, T.; Skalicky, T. Chem. Phys. Lett. 2008, 453, 101. (237) Lett, J. T.; Alexander, P. Radiat. Res. 1961, 15, 159. Chemical Reviews Review dx.doi.org/10.1021/cr300063r | Chem. Rev. XXXX, XXX, XXX−XXX X (238) Neary, G. J.; Simpson-Gildemeister, V. F. W.; Peacocke, A. R. Int. J. Radiat. Biol. 1970, 18, 25. (239) Hearst, J. E.; Vinogard, J. Proc. Natl. Acad. Sci. U.S.A. 1961, 47, 825. (240) Saenger, W. Principles of Nucleic Acid Structure; SpringerVerlag: New York, NY, 1984. (241) Jeffrey, G.; Saenger, W. Hydration Bonding in Biological Structures; Springer-Verlag: New York, NY, 1991. (242) Tao, N. J.; Lindsay, S. M.; Rupprecht, A. Biopolymers 1989, 28, 1019. (243) Swarts, S.; Sevilla, M. D.; Becker, D.; Tokar, C.; Wheeler, K. Radiat. Res. 1992, 129, 333. (244) Brun, É.; Cloutier, P.; Sicard-Roselli, C.; Fromm, M.; Sanche, L. J. Phys. Chem. B 2009, 113, 10008. (245) Cai, Z.; Cloutier, P.; Hunting, D. J.; Sanche, L. J. Phys. Chem. B 2005, 109, 4796. (246) de Lara, C. M.; Jenner, T. J.; Townsend, K. M. S.; Marsden, S. J.; O’Neill, P. Radiat. Res. 1995, 144, 43. (247) Alizadeh, E.; Cloutier, P.; Hunting, D. J.; Sanche, L. J. Phys. Chem. B 2011, 115, 4796. (248) Samuni, A.; Czapski, G. Radiat. Res. 1978, 76, 624. (249) Roots, R.; Chatterjee, A.; Blakely, E.; Chang, P.; Smith, K.; Tobias, C. Radiat. Res. 1982, 92, 245. (250) Ewing, D.; Walton, H. L.; Guilfoil, D. S.; Ohm, M. B. Int. J. Radiat. Biol. 1991, 59, 717. (251) Alizadeh, E.; Sanche, L. Radiat. Phys. Chem. 2012, 81, 33. (252) Nikjoo, H.; Lindborg, L. Phys. Med. Biol. 2010, 55, R65. (253) Alizadeh, E.; Sanche, L. J. Phys. Chem. B 2011, 115, 14852. (254) Devita Jr, V. T.; Hellman, S.; Resenberg, S. A. Cancer: Principles and Practice of Oncology; Lippincott Williams and Wilkins: New York, NY, 2001. (255) Saif, M. W.; Diaso, R. B. In Chemoradiation in Cancer Therapy; Choy, H., Ed.; Humana Press: Totowa, NJ, 2003; pp 23−44. (256) Jamieson, E. R.; Lippard, S. J. Chem. Rev. 1999, 99, 2467. (257) Lippard, S. J. Pure Appl. Chem. 1987, 59, 731. (258) Zheng, Y.; Hunting, D. J.; Ayotte, P.; Sanche, L. Phys. Rev. Lett. 2008, 100, 198101. (259) Rezaee, M.; Hunting, D. J.; Sanche, L. Results to be published. (260) Rezaee, M.; Alizadeh, E.; Hunting, D. J.; Sanche, L. Bioinorg. Chem. Appl. 2011, 2012, 1. (261) Seiwert, T. Y.; Salama, J. K.; Vokes, E. E. Nat. Clin. Pract. Oncol. 2007, 4, 86. (262) Zimbrick, J. D.; Sukrochana, A.; Richmond, R. C. Int. J. Radiat. Oncol. Biol. Phys. 1979, 5, 1351. (263) Lelieveld, P.; Scoles, M. A.; Brown, J. M.; Kallman, R. F. Int. J. Radiat. Oncol. Biol. Phys. 1985, 11, 111. (264) Sanche, L. Chem. Phys. Lett. 2009, 474, 1 (and references therein). (265) Zheng, Y.; Hunting, D. J.; Ayotte, P.; Sanche, L. Radiat. Res. 2008, 169, 19. (266) Heb́ert, E. M.; debouttier̀e, P. J.; Lepage, M.; Sanche, L.; Hunting, D. J. Int. J. Radiat. Biol. 2010, 86, 692. (267) Herold, D. M.; Das, I. J.; Stobbe, C. C.; Iyer, R. V.; Chapman, J. D. Int. J. Radiat. Biol. 2000, 76, 1357. (268) Whyman, R. Gold Bull. 1996, 29, 11. (269) Chen, W.; Zhang, J. J. Nanosci. Nanotechnol. 2006, 6, 1159. (270) Anshup, A.; Venkataraman, J. S.; Subramaniam, C.; Kumar, R. R.; Priya, S.; Kumar, T. R. S.; Omkumar, R. V.; John, A.; Pradeep, T. Langmuir 2005, 21, 11562. (271) Niidome, T.; Nakashima, K.; Takahashi, H.; Niidome, Y. Chem. Commun. 2004, 17, 1978. (272) Brun, E.; Duchambon, P.; Blouquit, Y.; Keller, G.; Sanche, L.; Sicard-Roselli, C. Radiat. Phys. Chem. 2009, 78, 177. (273) Foley, E. A.; Carter, J. D.; Shan, F.; Guo, T. Chem. Commun. 2005, 25, 3192. (274) Carter, J. D.; Cheng, N. N.; Qu, Y.; Suarez, G. D.; Guo, T. J. Phys. Chem. B 2007, 111, 11622. (275) Butterworth, K. T.; Wyer, J. A.; Brennan-Fournet, M.; Latimer, C. J.; Shah, M. B.; Currell, F. J.; Hirst, D. G. Radiat. Res. 2008, 170, 381. (276) Chang, M.; Shiau, A.; Chen, Y.; Chang, C.; Chen, H.; Wu, C. Cancer Sci. 2008, 99, 1479. (277) Xiao, F.; Zheng, Z.; Cloutier, P.; He, Y.; Hunting, D. J.; Sanche, L. Nanotechnology 2011, 22, 465101. (278) Zheng, Y.; Sanche, L. Radiat. Res. 2009, 172, 114. (279) German, E. D.;