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1,826 results on '"Tremblay, J."'

1. Ultrafast Transient Dynamics of Adsorbates on Surfaces Deciphered: The Case of CO on Cu(100)

Author

Novko, D., Tremblay, J. C., Alducin, M., and Juaristi, J. I.

Subjects
Condensed Matter - Materials Science
Abstract

Time-resolved vibrational spectroscopy constitutes an invaluable experimental tool for monitoring hot-carrier induced surface reactions. However, the absence of a full understanding on the precise microscopic mechanisms causing the transient spectral changes has been limiting its applicability. Here we introduce a robust first-principles theoretical framework that successfully explains both the nonthermal frequency and linewidth changes of the CO internal stretch mode on Cu(100) induced by femtosecond laser pulses. Two distinct processes engender the changes: electron-hole pair excitations underlie the nonthermal frequency shifts, while electron-mediated vibrational mode coupling gives rise to linewidth changes. Furthermore, the origin and precise sequence of coupling events are finally identified., Comment: Article as accepted for publication in Physical Review Letters; 5 pages, 2 figures, 1 table

Published
2018
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2. Effects of an inoculant containing Lentilactobacillus hilgardii (CNCM-I-4785) on the microbiome, fermentation, and aerobic stability of corn silage stored for long term at different incubation temperatures.

Author

Drouin, P., da Silva, É.B., Scuderi, R.A., Tremblay, J., Castex, M., and Apper, E.

Abstract

Copyright of Canadian Journal of Animal Science is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2024
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3. Meta-omics survey of [NiFe]-hydrogenase genes fails to capture drastic variations in H2-oxidation activity measured in three soils exposed to H2

Author

Khdhiri, M, Piché-Choquette, S, Tremblay, J, Tringe, SG, and Constant, P

Subjects
Metagenomic, Metatranscriptomics, Biogeochemistry, Microbial ecology, H-2 oxidation activities, Environmental Sciences, Biological Sciences, Agricultural and Veterinary Sciences, Agronomy & Agriculture
Abstract

Inferences on soil biogeochemical processes based on metagenomic profiles is a challenging task due to enormous diversity of soil microbes and the fragile linkage between gene abundance and functioning. Here we used the biological sink of H2 as a case study to test the hypothesis that [NiFe]-hydrogenase gene distribution and expression profiles explain variations in H2 oxidation rate measured in soil collected in poplar monoculture, larch plantation and farmland. Shotgun metagenomic and metatranscriptomic analyses of soil samples exposed to elevated or low H2 concentration led to the identification of 45 genes encoding the large subunit of [NiFe]-hydrogenases belonging to 8 distinct phyla. Our results indicate that despite significant sequencing effort, retrieved hydrogenase sequences are not in themselves adequate surrogates of H2 oxidation activity in these soils. In fact, land-use exerted a greater influence than H2 exposure on both hydrogenase gene distribution and expression though expression of certain genes responded to H2. We argue that approaches relying on PCR/RT-PCR amplicon sequencing or quantification combined with physicochemical parameters are currently the best option to infer the activity of H2-oxidizing bacteria and probably other specialist functional guilds with similar population size in soil.

Published
2018

6. The mean square displacement of a ballistic quantum particle.

Author

Bindech, O., Gatti, F., Mandal, S., Marquardt, R., Shi, L., and Tremblay, J. C.

Subjects
DISPLACEMENT (Mechanics), QUANTUM theory, QUANTUM correlations, WAVE packets, FOURIER transforms
Abstract

A commonly used quantum mechanical formulation of the mean square displacement $ \delta _x^2(t) $ δ x 2 (t) is based on the quantum correlation function of the position operator. While this quantity yields the classically expected result $ \delta _x^2(t)\propto t^2 $ δ x 2 (t) ∝ t 2 for a ballistic particle in the interval topology, it is found here to diverge at essentially all times, when evaluated on infinitely large rings. A somewhat different formulation of the mean square displacement in quantum mechanics was proposed in a previous work (R. Marquardt, Mol. Phys. 119, e1971315 (2021)) and yielded the result $ \delta _x^2(t)\propto t $ δ x 2 (t) ∝ t for the ballistic particle on an infinitely large ring. Here, it is shown analytically that that formulation yields $ \delta _x^2(t)\equiv 0 $ δ x 2 (t) ≡ 0 for the ballistic particle on an infinitely long interval. The two formulations define two different, topology dependent quantities that have the dimension of an area and that could in principle be determined from the same experiment, following a measurement idea proposed in the aforementioned work. That idea is critically reviewed here. [ABSTRACT FROM AUTHOR]

Published
2024
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13. Neighbouring plants and perception of predation risk modulate winter browsing by white-tailed deer (Odocoileus virginianus)

Author

Champagne, E., Perroud, L., Dumont, A., Tremblay, J.-P., and Cote, S.D.

Subjects
Winter -- Environmental aspects, Danger perception -- Environmental aspects, White-tailed deer -- Behavior -- Environmental aspects, Zoology and wildlife conservation
Abstract

The presence of neighbouring plants and predation risk can affect trophic interactions between plants and herbivores. We hypothesized that the relative preference for neighbouring species would determine winter herbivory and that predation risk would modulate browsing pressure. We tested these hypotheses using feeding trials in two regions with high white-tailed deer (Odocoileus virginianus (Zimmermann, 1780)) densities: Outaouais and Anticosti Island (Quebec, Canada). In each, we selected a species of interest and compared browsing rates and time spent foraging with neighbours relatively preferred or avoided. In a subexperiment, we included coyote (Canis latrans Say, 1823) urine to test for threat-sensitive foraging and interactions with neighbour effects. In Outaouais, time spent foraging on the focal species was reduced by the presence of potentially avoided neighbours and deer reduced browsing with increased perceived predation risk. On Anticosti, browsing rates on the focal species increased with avoided neighbours, with no effect of the predator urine. Anticosti deer have been in a predator-free environment for more than 120 years, likely reducing antipredator behaviours. This study demonstrates both neighbour effects and threat-sensitive foraging, phenomena that could interact and thus would benefit from being studied together to better represent trophic interactions in natural environments. Key words: vigilance, associational resistance, associational effects, white-tailed deer, Odocoileus virginianus. Resume: La presence de plantes compagnes et d'un risque de predation peut avoir une incidence sur les interactions trophiques entre plantes et herbivores. Nous avons postule que la preference relative pour des especes compagnes determinerait le comportement herbivore hivernal et que le risque de predation modulerait le broutement. Nous avons teste ces hypotheses par des tests d'alimentation dans deux regions caracterisees par de fortes densites de cerfs de Virginie (Odocoileus virginianus (Zimmermann, 1780)) : l'Outaouais et l'ile d'Anticosti (Quebec, Canada). Dans chacune de ces regions, nous avons selectionne une espece d'interet et compare les frequences de broutement et le temps passe a l'approvisionnement a ceux de plantes compagnes preferees ou evitees. Dans le cadre d'une sous-experience, nous avons inclus de l'urine de coyote (Canis latrans Say, 1823) pour verifier si l'approvisionnement et les interactions avec les especes compagnes etaient sensibles au risque de predation percu. En Outaouais, la presence d'especes compagnes potentiellement evitees reduisait le temps passe a brouter l'espece d'interet, et un plus grand risque predation percu entrainait une reduction du broutement par les cerfs. Dans l'ile d'Anticosti, le broutement de l'espece d'interet augmentait en presence d'especes compagnes evitees, sans effet de l'urine de predateur. Les cerfs de l'ile d'Anticosti evoluent dans un milieu exempt de predateurs depuis plus de 120 ans, ce qui a vraisemblablement diminue leurs comportements antipredateur. L'etude demontre des effets d'especes compagnes et le fait que l'approvisionnement est sensible au risque de predation percu, des phenomenes qui pourraient interagir et devraient donc etre etudies ensemble pour en arriver a une meilleure representation des interactions trophiques en milieux naturels. [Traduit par la Redaction] Mots-cles : vigilance, resistance associative, effets associatifs, cerf de Virginie, Odocoileus virginianus., Introduction Wild herbivores make foraging decisions in complex and multi-specific environments and often show preferences for different plant species based on their morphological (Vivas et al. 1991; Cote et al. [...]

Published
2018
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14. Intestinal microRNAs and bacterial taxa in juvenile mice are associated, modifiable by allochthonous lactobacilli, and affect postnatal maturation

Author

Taibi, A, Tokar, T, Tremblay, J, Gargari, G, Streutker, C, Li, B, Pierro, A, Guglielmetti, S, Tompkins, T, Jurisica, I, Comelli, E, Streutker, CJ, Tompkins, TA, Comelli, EM, Taibi, A, Tokar, T, Tremblay, J, Gargari, G, Streutker, C, Li, B, Pierro, A, Guglielmetti, S, Tompkins, T, Jurisica, I, Comelli, E, Streutker, CJ, Tompkins, TA, and Comelli, EM

Abstract

The gut microbiota affects intestinal microRNA (miRNA) signatures and is modified by host-derived luminal miRNA. This suggests the existence of close miRNA-microbiota relationships that are critical to intestinal homeostasis. However, an integrative analysis of these relationships and their evolution during intestinal postnatal maturation is lacking. We provide a system-level longitudinal analysis of miRNA-microbiota networks in the intestine of mice at the weaning transition, including tissue and luminal miRNA and luminal microbiota. To address causality and move toward translational applications, we used allochthonous probiotic lactobacilli to modify these longitudinal relationships and showed that they are critical for intestinal maturation in early life. These findings contribute to understand mechanisms that underlie the maturation of the intestinal ecosystem and suggest that interventions aiming at maintaining, or restoring, homeostasis cannot prescind from considering relationships among its components.The interplay between the intestinal microbiota and host is critical to intestinal ontogeny and homeostasis. MicroRNAs (miRNAs) may be an underlying link. Intestinal miRNAs are microbiota-dependent and, when shed in the lumen, affect resident microorganisms. Yet, longitudinal relationships between intestinal tissue miRNAs, luminal miRNAs, and luminal microorganisms have not been elucidated, especially in early life. Here, we investigated the postnatal cecal miRNA and microbiota populations, their relationship, and their impact on intestinal maturation in specific pathogen-free mice; we also assessed if they can be modified by intervention with allochthonous probiotic lactobacilli. We report that cecal and cecal content miRNA and microbiota signatures are temporally regulated, correlated, and modifiable by probiotics with implications for intestinal maturation. These findings help understand causal relationships within the gut ecosystem and provide a basis for p

Published
2023

24. Polygenic risk scores predict diabetes complications and their response to intensive blood pressure and glucose control

Author

Tremblay, J, Haloui, M, Attaoua, R, Tahir, R, Hishmih, C, Harvey, F, Marois-Blanchet, F, Long, C, Simon, P, Santucci, L, Hizel, C, Chalmers, J, Marre, M, Harrap, S, Cifkova, R, Krajcoviechova, A, Matthews, D, Williams, B, Poulter, N, Zoungas, S, Colagiuri, S, Mancia, G, Grobbee, D, Rodgers, A, Liu, L, Agbessi, M, Bruat, V, Fave, M, Harwood, M, Awadalla, P, Woodward, M, Hussin, J, Hamet, P, Tremblay J., Haloui M., Attaoua R., Tahir R., Hishmih C., Harvey F., Marois-Blanchet F. -C., Long C., Simon P., Santucci L., Hizel C., Chalmers J., Marre M., Harrap S., Cifkova R., Krajcoviechova A., Matthews D. R., Williams B., Poulter N., Zoungas S., Colagiuri S., Mancia G., Grobbee D. E., Rodgers A., Liu L., Agbessi M., Bruat V., Fave M. -J., Harwood M. P., Awadalla P., Woodward M., Hussin J. G., Hamet P., Tremblay, J, Haloui, M, Attaoua, R, Tahir, R, Hishmih, C, Harvey, F, Marois-Blanchet, F, Long, C, Simon, P, Santucci, L, Hizel, C, Chalmers, J, Marre, M, Harrap, S, Cifkova, R, Krajcoviechova, A, Matthews, D, Williams, B, Poulter, N, Zoungas, S, Colagiuri, S, Mancia, G, Grobbee, D, Rodgers, A, Liu, L, Agbessi, M, Bruat, V, Fave, M, Harwood, M, Awadalla, P, Woodward, M, Hussin, J, Hamet, P, Tremblay J., Haloui M., Attaoua R., Tahir R., Hishmih C., Harvey F., Marois-Blanchet F. -C., Long C., Simon P., Santucci L., Hizel C., Chalmers J., Marre M., Harrap S., Cifkova R., Krajcoviechova A., Matthews D. R., Williams B., Poulter N., Zoungas S., Colagiuri S., Mancia G., Grobbee D. E., Rodgers A., Liu L., Agbessi M., Bruat V., Fave M. -J., Harwood M. P., Awadalla P., Woodward M., Hussin J. G., and Hamet P.

Abstract

Aims/hypothesis: Type 2 diabetes increases the risk of cardiovascular and renal complications, but early risk prediction could lead to timely intervention and better outcomes. Genetic information can be used to enable early detection of risk. Methods: We developed a multi-polygenic risk score (multiPRS) that combines ten weighted PRSs (10 wPRS) composed of 598 SNPs associated with main risk factors and outcomes of type 2 diabetes, derived from summary statistics data of genome-wide association studies. The 10 wPRS, first principal component of ethnicity, sex, age at onset and diabetes duration were included into one logistic regression model to predict micro- and macrovascular outcomes in 4098 participants in the ADVANCE study and 17,604 individuals with type 2 diabetes in the UK Biobank study. Results: The model showed a similar predictive performance for cardiovascular and renal complications in different cohorts. It identified the top 30% of ADVANCE participants with a mean of 3.1-fold increased risk of major micro- and macrovascular events (p = 6.3 × 10−21 and p = 9.6 × 10−31, respectively) and a 4.4-fold (p = 6.8 × 10−33) higher risk of cardiovascular death. While in ADVANCE overall, combined intensive blood pressure and glucose control decreased cardiovascular death by 24%, the model identified a high-risk group in whom it decreased the mortality rate by 47%, and a low-risk group in whom it had no discernible effect. High-risk individuals had the greatest absolute risk reduction with a number needed to treat of 12 to prevent one cardiovascular death over 5 years. Conclusions/interpretation: This novel multiPRS model stratified individuals with type 2 diabetes according to risk of complications and helped to target earlier those who would receive greater benefit from intensive therapy. Graphical abstract: [Figure not available: see fulltext.]

Published
2021

25. Correction to: Polygenic risk scores predict diabetes complications and their response to intensive blood pressure and glucose control (Diabetologia, (2021), 64, 9, (2012-2025), 10.1007/s00125-021-05491-7)

Author

Tremblay J., Tremblay, J, Haloui, M, Attaoua, R, Tahir, R, Hishmih, C, Harvey, F, Marois-Blanchet, F, Long, C, Simon, P, Santucci, L, Hizel, C, Chalmers, J, Marre, M, Harrap, S, Cífková, R, Krajčoviechová, A, Matthews, D, Williams, B, Poulter, N, Zoungas, S, Colagiuri, S, Mancia, G, Grobbee, D, Rodgers, A, Liu, L, Agbessi, M, Bruat, V, Favé, M, Harwood, M, Awadalla, P, Woodward, M, Hussin, J, Hamet, P, Tremblay J., Haloui M., Attaoua R., Tahir R., Hishmih C., Harvey F., Marois-Blanchet F. C., Long C., Simon P., Santucci L., Hizel C., Chalmers J., Marre M., Harrap S., Cífková R., Krajčoviechová A., Matthews D. R., Williams B., Poulter N., Zoungas S., Colagiuri S., Mancia G., Grobbee D. E., Rodgers A., Liu L., Agbessi M., Bruat V., Favé M. J., Harwood M. P., Awadalla P., Woodward M., Hussin J. G., Hamet P., Tremblay J., Tremblay, J, Haloui, M, Attaoua, R, Tahir, R, Hishmih, C, Harvey, F, Marois-Blanchet, F, Long, C, Simon, P, Santucci, L, Hizel, C, Chalmers, J, Marre, M, Harrap, S, Cífková, R, Krajčoviechová, A, Matthews, D, Williams, B, Poulter, N, Zoungas, S, Colagiuri, S, Mancia, G, Grobbee, D, Rodgers, A, Liu, L, Agbessi, M, Bruat, V, Favé, M, Harwood, M, Awadalla, P, Woodward, M, Hussin, J, Hamet, P, Tremblay J., Haloui M., Attaoua R., Tahir R., Hishmih C., Harvey F., Marois-Blanchet F. C., Long C., Simon P., Santucci L., Hizel C., Chalmers J., Marre M., Harrap S., Cífková R., Krajčoviechová A., Matthews D. R., Williams B., Poulter N., Zoungas S., Colagiuri S., Mancia G., Grobbee D. E., Rodgers A., Liu L., Agbessi M., Bruat V., Favé M. J., Harwood M. P., Awadalla P., Woodward M., Hussin J. G., and Hamet P.

Published
2021

27. Introduction

Author

Hizel, C., primary, Tremblay, J., additional, Bartlett, G., additional, and Hamet, P., additional

Published
2017
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28. List of Contributors

Author

Ali, A., primary, Ashraf, S.T., additional, Bakhtiar, S.M., additional, Bartlett, G., additional, Dawes, M., additional, Dhawan, D., additional, Dumitrescu, R.G., additional, Espinal-Enríquez, J., additional, García-Herrera, R., additional, Hamet, P., additional, Hassan, A., additional, Hernández-Lemus, E., additional, Hizel, C., additional, Kaur, Jaspreet, additional, Kaur, Jyotdeep, additional, Lemarié, É., additional, Lemay, V., additional, Mejía-Pedroza, R.A., additional, Munshi, A., additional, Naz, A., additional, Naz, K., additional, Nguyen, Q., additional, Obaid, A., additional, Paracha, R.Z., additional, Phillips, M.S., additional, Rahat, B., additional, Rahimzadeh, V., additional, Rehman, S., additional, Sharma, S., additional, Sharma, V., additional, Simon, R., additional, Soomro, N.I., additional, Thakur, S., additional, Tremblay, J., additional, Tremblay, Y., additional, and Verma, M., additional

Published
2017
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29. Changements touchant les océans qui bordent le Canada

Author

Greenan, B J W, primary, James, T S, additional, Loder, J W, additional, Pepin, P, additional, Azetsu-Scott, K, additional, Ianson, D, additional, Hamme, R C, additional, Gilbert, D, additional, Tremblay, J -E, additional, Wang, XL, additional, and Perrie, W, additional

Published
2019
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30. Changes in oceans surrounding Canada

Author

Greenan, B J W, primary, James, T S, additional, Loder, J W, additional, Pepin, P, additional, Azetsu-Scott, K, additional, Ianson, D, additional, Hamme, R C, additional, Gilbert, D, additional, Tremblay, J -E, additional, Wang, XL, additional, and Perrie, W, additional

Published
2019
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32. 03. Is ethnicity an appropriate measure of health care marginalization?: A systematic review and meta-analysis of the outcomes of diabetic foot ulceration in the Aboriginal population

Author

Johnson, G., Vergis, A., Unger, B., Park, J., Gillman, L., Hickey, K., Pace, D., Azin, A., Guidolin, K., Lam-Tin-Cheung, K., Chadi, S., Quereshy, F., Catton, J., Rubin, B., Bell, J., Marangos, J., Heesters, A., Stuart-McEwan, T., Shariff, F., Wright, F., Ahmed, N., Nadler, A., Hallet, J., Gentles, J., Chen, L., Hwang, H., Parapini, M., Hirpara, D., Sidhu, R., Scott, T., Karimuddin, A., Guo, R., Nguyen, A., Osborn, J., Wiseman, S., Nabata, K., Ertel, E., Lenet, T., Baker, L., Park, L., Vered, M., Zahrai, A., Shorr, R., Davis, A., McIsaac, D., Tinmouth, A., Fergusson, D., Martel, G., Rummel, S., Stefic-Cubic, M., Stewart, M., Melck, A., McKechnie, T., Anpalagan, T., Ichhpuniani, S., Lee, Y., Ramji, K., Eskicioglu, C., Zhu, A., Deng, S., Greene, B., Tsang, M., Palter, V., Jayaraman, S., Mann, A., Tittley, J., Cadeddu, M., Nguyen, M., Madani, A., Pasternak, J., Hong, D., Qu, L., Istl, A., Tang, E., Gray, D., Zuckerman, J., Coburn, N., Callum, J., McLeod, R., Pearsall, E., Lin, Y., Turgeon, A., Mahar, A., Kammili, A., Kriviraltcheva-Kaneva, P., Lee, L., Cools-Lartigue, J., Ferri, L., Mueller, C., Haas, B., Tillman, B., Guttman, M., Chesney, T., Zuk, V., Hsu, A., Chan, W., Vasdev, R., D’Souza, K., Huynh, C., Ling, L. Cadili J., Warburton, R., Hameed, M., Glass, L., Williamson, H., Murphy, P., Leslie, K., Hawel, J., Kerr, L., Zablotny, S., Roldan, H., He, W., Jiang, X., Zheng, B., Fiore, J., Feldman, L., Fried, G., Valanci, S., Balvardi, S., Cipolla, J., Kaneva, P., Demyttenaere, S., Boutros, M., Alhashemi, M., Miles, A., Purich, K., Verhoeff, K., Shapiro, J., Bigam, D., Kung, J., Fecso, A., Mosko, J., Skubleny, D., Hamilton, P., Ghosh, S., Widder, S., Schiller, D., Do, U., El Kefraoui, C., Pook, M., Barone, N., Montgomery, H., Nguyen-Powanda, P., Rajabiyazdi, F., Elhaj, H., Lapointe-Gagner, M., Olleik, G., Antoun, A., Safa, N., Di Lena, E., Meterissian, S., Meguerditchian, A., Lee, F., Baldini, G., Serrano Aybar, P.E., Parpia, S., Ruo, L., Tywonek, K., Lee, S., O’Neill, C., Faisal, N., Alfayyadh, A., Gundayao, M., Meyers, B.M., Habashi, R., Kruse, C., Levin, M., Aldrich, K., Grantcharov, T., Langerman, A., Forbes, H., Anantha, R., Fawcett, V., Hetherington, A., Pravong, V., Gervais, M., Rakovich, G., Selvam, R., Hu, R., Musselman, R., Raiche, I., Moloo, H., Liu, R., Elnahas, A., Alkhamesi, N., Alnumay, A., Schlachta, C., Walser, E., Zhang, C., Cristancho, S., Ott, M., Lee, A., Niu, B., Balaa, F., Gawad, N., Ren, K., Qiu, Y., Hamann, K., How, N., Leveille, C., Davidson, A., Eqbal, A., Sardiwalla, Y., Korostensky, M., Lee, E., Yang, I., Muaddi, H., Stukel, T., de Mestral, C., Nathens, A., Karanicolas, P., Frigault, J., Lemieux, S., Breton, D., Bouchard, P., Bouchard, A., Grégoire, R., Letarte, F., Bouchard, G., Drolet, S., Avoine, S., Gagné, J., Thibault, C., Jutras Bouthillette, N., Gosselin, M., Rosenzveig, A., Stuleanu, T., Jarrar, A., Kolozsvari, N., Skelhorne-Gross, G., Nenshi, R., Jerath, A., Gomez, D., Singh, K., Amir, T., Liu, E., Farquharson, S., Mao, R., Lan, L., Yan, J., Allard-Coutu, A., Mierzwa, A., Tin, R., Brisebois, R., Bradley, N., Wigen, R., Hartford, L., Van Koughnett, J., Vogt, K., Hilsden, R., Parry, N., Allen, L., Raskin, R., Jones, J., Neumann, K., Dwyer, C., Strickland, M., O’Dochartaigh, D., Lobay, K., Kabaroff, A., Chang, E., Sun, W., Beck, J., Davidson, J., Jones, S., Van Hooren, T., Schmitz, E., El Hafid, M., Dang, J., Mocanu, V., Lutzak, G., Sultanian, R., Wong, C., Karmali, S., Petrera, M., Pickell, M., Auer, R., Patro, N., Li, B., Wilson, H., Jogiat, U., Switzer, N., Li, C., Al Hinai, A., Cieply, A., Hawes, H., Joos, E., Saleh, A., Engels, P., Drung, J., Pang, G., Kwong, M., Ellsmere, J., Chang, D., Hutter, M., Spence, R., Abou Khalil, M., Vasilevsky, C., Morin, N., Longtin, Y., Liberman, S., Montpetit, P., Poirier, M., Mukherjee, K., Sebajang, H., Younan, R., Schwenter, F., De Broux, E., Larsen, K., Beckett, A., Nantais, J., Kay, J., Lohre, R., Ayeni, O., Goel, D., de SA, D., He, R., Hylton, D., Bedard, E., Johnson, S., Laing, B., Valji, A., Hanna, W., Turner, S., Akhtar-Danesh, G., Akhtar-Danesh, N., Shargall, Y., Gupta, V., Kidane, B., Limbachia, J., Sullivan, K., Farrokhyar, F., Leontiadis, G., Patel, Y., Churchill, I., Xie, F., Seely, A., Spicer, J., Yasufuku, K., Beauchamp, M., Wald, J., Mbuagbaw, L., Agzarian, J., Finley, C., Fahim, C., Abbas, M., Olaiya, O., Begum, H., Ednie, A., Palma, D., Warner, A., Malthaner, R., Fortin, D., Qiabi, M., Nayak, R., Nguyen, T., Louie, A., Rodrigues, G., Yaremko, B., Laba, J., Inculet, R., Alaichi, J., Mador, B., Lai, H., White, J., Kim, M., Darling, G., Rousseau, M., Samarasinghe, Y., Lee, M., Thiru, L., Levine, O., Juergens, R., Brogly, S., Li, W., Lougheed, D., Petsikas, D., Mistry, N., Gatti, A., Abdul, S., Anestee, C., Gilbert, S., Sundaresan, S., Villeneuve, P., Maziak, D., Razzak, R., Ashrafi, A., Tregobov, N., Hassanzadeh, N., Stone, S., Panjwani, A., Bong, T., Bond, R., Hafizi, A., De Meo, M., Rayes, R., Milette, S., Vagai, M., Usatii, M., Chandrasekaran, A., Giannias, B., Bourdeau, F., Sangwan, V., Bertos, N., Moraes, C., Huang, S., Quail, D., Walsh, L., Camilleri-Broet, S., Fiset, P., Bilgic, E., Quaiattini, A., Maurice-Ventouris, M., Najmeh, S., Esther, L., Lu, J., Malhan, R., Brophy, S., Brennan, K., French, D., Resende, V., Momtazi, M., Solaja, O., Sisson, D., Donahoe, L., Bedard, P., Hansen, A., De Perrot, M., Alghamedi, A., Simone, A., Huang, J., Murthy, S., Lin, J., Li, H., Crowther, M., Linkins, L., Lau, E., Schneider, L., Douketis, J., Greenberg, B., Allen-Avodabo, C., Davis, L., Zhao, H., Sirois, C., Mulder, D., Al Rawahi, A., Aftab Abdul, S., Nguyen, D., Anstee, C., Delic, E., Sasewich, H., Islam, T., Low, D., Humer, M., Le Nguyen, D., Kay, M., Shayegan, B., Adili, A., Kaafarani, M., Chouiali, F., Muthukrishnan, N., Maleki, F., Ovens, K., Gold, M., Sorin, M., Falutz, R., Forghani, R., Hunka, N., Kennedy, R., Bigsby, R., Bharadwaj, S., Gowing, S., Pearce, K., Jones, D., Kumar, S., Gingrich, M., Ahmadzai, Z., Thavorn, K., Namavarian, A., Mohammed, A., Uddin, S., Behzadi, A., Brar, A., Peters, E., Buduhan, G., Tan, L., Srinathan, S., Levy, J., Ringash, J., Sutradhar, R., Robinson, M., Bednarek, L., Wang, H., MacDonald, D., Graham, K., Enns, S., Tan, A., Bruinooge, A., Poole, E., Pascoe, C., Karakach, T., Halayko, A., Fang, B., Birch, D., Singh, H., Hershorn, O., Hochman, D., Helewa, R., Robertson, R., Cahill, C., Lipson, M., Afzal, A., Maclean, A., Roen, S., Buie, W., Chu, M., Amin, N., Jaffer, H., Rebello, R., Doumouras, A., Hajjar, R., Oliero, M., Cuisiniere, T., Fragoso, G., Calvé, A., Djediai, S., Annabi, B., Richard, C., Santos, M., Zhou, Y., Dodd), S., Ring, B., Yuan, Y., Garfinkle, R., Dell’Aniello, S., Bhatnagar, S., Ghitulescu, G., Faria, J., Brassard, P., Salama, E., Amar-Zifkin, A., Talwar, G., Daniel, R., AlSulaim, H., Alqahtani, M., Al-Masrouri, S., Chen, A., Patel, A., Brissette, V., Al Busaidi, N., Moon, J., Demian, M., MacRae, H., Alam, F., Holland, J., Cwintal, M., Rigas, G., Pang, A., Marinescu, D., Brown, C., Raval, M., Phang, P., Ghuman, A., Li, M., Muncner, S., Mihajlovic, I., Dykstra, M., Snelgrove, R., Monton, O., Smith, A., AlAamer, O., AlSelaim, N., AlMalki, M., Al-osail, A., Ruxton, R., Manuel, P., Mohamed, F., Motamedi, M.K., Serahati, S., Rajendran, L., Phang, T., Caminsky, N., Alavi, K., Paquette, I., MacLean, T., Wexner, S., Steele, S., Patel, S., Bordeianou, L., Sylla, P., Bayat, Z., Kennedy, E., Victor, C., Govindarajan, A., Liang, J., Roy, H., Baig, Z., Karimmudin, A., Gill, D., Ginther, N., Alrashid, F., Wiseman, V., Zhang, L., MacDonald, P., Merchant, S.M., Wattie Barnett, K., Caycedo-Marulanda, A., Patel, S.V., Harra, Z., Hegagi, M., Alghaithi, N., Papillon, E., Kasteel, N., Kaur, G., Bindra, S., Malhotra, A., Graham, C., MacLean, A., Beck, P., Jijon, H., Ferraz, J., Szwimer, R., Merchant, S., Kong, W., Gyawali, B., Hanna, T., Chung, W., Nanji, S., Booth, C., Li, V., Awan, A., Serrano, P., Jacobson, M., Chanco, M., Wen, V., Singh, N., Peiris, L., Pasieka, J., Ghatage, P., Buie, D., Bouchard-Fortier, A., Mack, L., Marini, W., Zheng, W., Swallow, C., Reedijk, M., DiPasquale, A., Prus-Czrnecka, Z., Delmar, L., Gagnon, N., Villiard, R., Martel, É., Cadrin-Chênevert, A., Ledoux, É., Racicot, C., Mysuria), S., Bazzarelli, A., Pao, J., Zhang, M., McKevitt, E., Kuusk, U., Van Laeken, N., Bovill, E., Isaac, K., Dingee, C., Hunter-Smith, A., Cuthbert, C., Fergus, K., Barbera, L., Efegoma, Y., Howell, D., Isherwood, S., Levasseur, N., Scheer, A., Simmons, C., Srikantham, A., Temple-Orberle, C., Xu, Y., Metcalfe, K., Quan, M., Alqaydi, A., la, J., Digby, G., Brind’Amour, A., Sidéris, L., Dubé, P., De Guerke, L., Fortin, S., Auclair, M., Trilling, B., Tremblay, J., Di Lena, É., Hopkins), B., Wong, S., Hopkins, B., Dumitra, S., Mysuria, S., Kapur, H., Bazarelli, A., Cadili, L., DeGirolamo, K., Ng, D., Ali, A., Eymae, D., Lee, K., Brar, S., Conner, J., Magalhaes, M., Allen, K., Baliski, C., Cyr, D., Sari, A., Messenger, D., Driman, D., Assarzadegan, N., Juda, A., Brar, M., Kirsch, R., Lamontagne, A., Gamache, Y., Mardinger, C., Lee, C., Duckworth, R., Brindle, M., Fraulin, F., Austen, L., Kortbeek, J., Hyndman, M., Jamjoum, G., Langer, S., Yuan Xu, Y., Kong, S., Lim, D., Retrouvey, H., Kerrebijn, I., Butler, K., O’Neill, A., Cil, T., Zhong, T., Hofer, S., McCready, D., Look Hong, N., Skipworth, J., Mah, A., Desai, S., Chung, S., Scudamore, C., Segedi, M., Vasilyeva, E., Li, J., Kim, P., Deprato, A., Dajani, K., Gilbert, R., Smoot, R., Tzeng, C., Rocha, F., Yohanathan, L., Cleary, S., Bertens, K., Reyna-Sepulveda, F., Badrudin, D., Gala-Lopez, B., Hanna, N., Wei, X., Kaliwal, Y., Wei, A., Henault, D., Barrette, B., Pelletier, S., Thebault, P., Beaudry-Simoneau, E., Rong, Z., Plasse, M., Dagenais, A. Roy M., Létourneau, R., Lapointe, R., Vandenbroucke-Menu, F., Nguyen, B., Soucy, G., Turcotte, S., Lemke, M., Waugh, E., Quan, D., Skaro, A., Lund, M., Glinka, J., Jada, G., Daza, J., Msallak, H., Zhang, B., Workneh, A., Faisal, S., Faisal, R., Fabbro, M., Gu, C., Claassen, M., Sapisochin, G., Breadner, D., Welch, S., Webb, A., Lester, E., Shapiro, A., Eurich, D., Essaji, Y., Shrader, H., Nayyar, A., Suraju, M., Williams-Perez, S., Ear, P., Chan, C., Smith, V., Rivers-Bowerman, M., Costa, A., Stueck, A., Campbell, N., Allen, S., Mir, Z., Golding, H., McKeown, S., Flemming, J., Groome, P., Djerboua, M., Elbekri, S., Girard, E., Morency-Potvin, P., Dagenais, M., Roy, A., Letourneau, R., Simoneau, E., Zuker, N., Oakley, M., Chartrand, G., Misheva, B., Bendavid, Y., Melland-Smith, M., Smith, L., Tan, J., Kahn, U., McLean, C., Fortin, M., Paré, X., Doyon, A., Keshavjee, S., Schwenger, K., Yadav, J., Fischer, S., Jackson, T., Allard, J., Okrainec, A., Anvari, S., Lovrics, O., Aditya, I., Khondker, A., Walsh, M., Hardy, K., Romanescu, R., Deaninck, F., Linton, J., Fowler-Woods, M., Fowler-Woods, A., Shingoose, G., Zmudzinski, M., Cloutier, Z., Archer, V., Shiroky, J., Abu Halimah, J., Boudreau, V., Marcil, G., Hardy-Henry, A., Lin, W., Hagen, J., and Connell, M.

Subjects
Abstracts, Canadian Association of General Surgeons, Canadian Hernia Society, Canada, Canadian Association of Thoracic Surgeons, Canadian Hepato-Pancreato-Biliary Association, Humans, Canadian Society of Surgical Oncology, Canadian Association of Bariatric Physicians and Surgeons, Canadian Society of Colon and Rectal Surgeons
Published
2022

33. Content in fatty acids and carotenoids in phytoplankton blooms during the seasonal sea ice retreat in Hudson Bay complex, Canada.

Author

Amiraux", R, Lavaud, J., Cameron-Bergeron, K., Matthes, L. C., Peeken, Ilka, Mundy, C. J., Babb, D. G., Tremblay, J. E., Amiraux", R, Lavaud, J., Cameron-Bergeron, K., Matthes, L. C., Peeken, Ilka, Mundy, C. J., Babb, D. G., and Tremblay, J. E.

Abstract

The Hudson Bay complex (HBC) is home to numerous indigenous communities that traditionally have relied heavily on its marine resources. The nutritional quality and stocks of the entire HBC food web depend in large part on the phytoplankton production of bioactive molecules (long chain polyunsaturated fatty acids and carotenoids) and their transfer through trophic levels. The purpose of this study was thus to determine which molecules were produced during spring phytoplankton blooms, as well as the environmental factors driving this production. We investigated 21 stations in 5 sub-regions of the HBC. At the time of sampling, the sub-regions studied had different environmental settings (e.g., ice cover, nutrients, seawater salinity and temperature) conditioning their bloom stages. Pre- and post-bloom stages were associated with relatively low concentrations of bioactive molecules (either fatty acids or carotenoids). In contrast, the highest concentrations of bioactive molecules (dominated by eicosapentaenoic acid and fucoxanthin) were associated with the diatom bloom that typically occurs at the ice edge when silicates remain available. Interestingly, the large riverine inputs in eastern Hudson Bay led to a change in protist composition (larger contribution of Dinophyceae), resulting in lower while more diverse content of bioactive molecules, whether fatty acids (e.g., aa-linolenic acid) or carotenoids (e.g., peridinin). As greater stratification of the HBC is expected in the future, we suggest that a mixotrophic/heterotrophic flagellate-based food web would become more prevalent, resulting in a smaller supply of bioactive molecules for the food web.

Published
2022

34. Understanding the origin and fate of terrestrial organic matter in the coastal waters of the Mackenzie Delta region

Author

Lizotte, M. P., Juhls, Bennet, Matsuoka, A., Massicotte, P., Mével, G., Anikina, D. O. J., Antonova, Sofia, Bécu, Guislain, Béguin, M., Bélanger, S., Bossé-Demers, Thomas, Bröder, Lisa, Bruyant, Flavienne, Chaillou, G, Comte, J., Couture, R.-M., Devred, E., Deslongchamps, G., Dezutter, T., Dillon, Melanie, Doxaran, D., Flamand, A., Fell, F., Ferland, J., Forget, M.-H., Fritz, Michael, Gordon, T.J., Guilmette, C., Hilborn, A., Hussherr, R., Irish, C., Joux, F., Kipp, L., Laberge-Carignan, A., Lantuit, Hugues, Leymarie, Edouard, Mannino, A., Maury, J., Overduin, Pier Paul, Oziel, Laurent, Stedmon, C., Thomas, C., Tisserand, L., Tremblay, J.-É., Vonk, J., Whalen, D., Babin, M., Lizotte, M. P., Juhls, Bennet, Matsuoka, A., Massicotte, P., Mével, G., Anikina, D. O. J., Antonova, Sofia, Bécu, Guislain, Béguin, M., Bélanger, S., Bossé-Demers, Thomas, Bröder, Lisa, Bruyant, Flavienne, Chaillou, G, Comte, J., Couture, R.-M., Devred, E., Deslongchamps, G., Dezutter, T., Dillon, Melanie, Doxaran, D., Flamand, A., Fell, F., Ferland, J., Forget, M.-H., Fritz, Michael, Gordon, T.J., Guilmette, C., Hilborn, A., Hussherr, R., Irish, C., Joux, F., Kipp, L., Laberge-Carignan, A., Lantuit, Hugues, Leymarie, Edouard, Mannino, A., Maury, J., Overduin, Pier Paul, Oziel, Laurent, Stedmon, C., Thomas, C., Tisserand, L., Tremblay, J.-É., Vonk, J., Whalen, D., and Babin, M.

Published
2022

35. Critical Assessment of Metagenome Interpretation: the second round of challenges

Author

Meyer, F, Fritz, A, Deng, Z-L, Koslicki, D, Lesker, TR, Gurevich, A, Robertson, G, Alser, M, Antipov, D, Beghini, F, Bertrand, D, Brito, JJ, Brown, CT, Buchmann, J, Buluc, A, Chen, B, Chikhi, R, Clausen, PTLC, Cristian, A, Dabrowski, PW, Darling, AE, Egan, R, Eskin, E, Georganas, E, Goltsman, E, Gray, MA, Hansen, LH, Hofmeyr, S, Huang, P, Irber, L, Jia, H, Jorgensen, TS, Kieser, SD, Klemetsen, T, Kola, A, Kolmogorov, M, Korobeynikov, A, Kwan, J, LaPierre, N, Lemaitre, C, Li, C, Limasset, A, Malcher-Miranda, F, Mangul, S, Marcelino, VR, Marchet, C, Marijon, P, Meleshko, D, Mende, DR, Milanese, A, Nagarajan, N, Nissen, J, Nurk, S, Oliker, L, Paoli, L, Peterlongo, P, Piro, VC, Porter, JS, Rasmussen, S, Rees, ER, Reinert, K, Renard, B, Robertsen, EM, Rosen, GL, Ruscheweyh, H-J, Sarwal, V, Segata, N, Seiler, E, Shi, L, Sun, F, Sunagawa, S, Sorensen, SJ, Thomas, A, Tong, C, Trajkovski, M, Tremblay, J, Uritskiy, G, Vicedomini, R, Wang, Z, Warren, A, Willassen, NP, Yelick, K, You, R, Zeller, G, Zhao, Z, Zhu, S, Zhu, J, Garrido-Oter, R, Gastmeier, P, Hacquard, S, Haeussler, S, Khaledi, A, Maechler, F, Mesny, F, Radutoiu, S, Schulze-Lefert, P, Smit, N, Strowig, T, Bremges, A, Sczyrba, A, McHardy, AC, Meyer, F, Fritz, A, Deng, Z-L, Koslicki, D, Lesker, TR, Gurevich, A, Robertson, G, Alser, M, Antipov, D, Beghini, F, Bertrand, D, Brito, JJ, Brown, CT, Buchmann, J, Buluc, A, Chen, B, Chikhi, R, Clausen, PTLC, Cristian, A, Dabrowski, PW, Darling, AE, Egan, R, Eskin, E, Georganas, E, Goltsman, E, Gray, MA, Hansen, LH, Hofmeyr, S, Huang, P, Irber, L, Jia, H, Jorgensen, TS, Kieser, SD, Klemetsen, T, Kola, A, Kolmogorov, M, Korobeynikov, A, Kwan, J, LaPierre, N, Lemaitre, C, Li, C, Limasset, A, Malcher-Miranda, F, Mangul, S, Marcelino, VR, Marchet, C, Marijon, P, Meleshko, D, Mende, DR, Milanese, A, Nagarajan, N, Nissen, J, Nurk, S, Oliker, L, Paoli, L, Peterlongo, P, Piro, VC, Porter, JS, Rasmussen, S, Rees, ER, Reinert, K, Renard, B, Robertsen, EM, Rosen, GL, Ruscheweyh, H-J, Sarwal, V, Segata, N, Seiler, E, Shi, L, Sun, F, Sunagawa, S, Sorensen, SJ, Thomas, A, Tong, C, Trajkovski, M, Tremblay, J, Uritskiy, G, Vicedomini, R, Wang, Z, Warren, A, Willassen, NP, Yelick, K, You, R, Zeller, G, Zhao, Z, Zhu, S, Zhu, J, Garrido-Oter, R, Gastmeier, P, Hacquard, S, Haeussler, S, Khaledi, A, Maechler, F, Mesny, F, Radutoiu, S, Schulze-Lefert, P, Smit, N, Strowig, T, Bremges, A, Sczyrba, A, and McHardy, AC

Abstract

Evaluating metagenomic software is key for optimizing metagenome interpretation and focus of the Initiative for the Critical Assessment of Metagenome Interpretation (CAMI). The CAMI II challenge engaged the community to assess methods on realistic and complex datasets with long- and short-read sequences, created computationally from around 1,700 new and known genomes, as well as 600 new plasmids and viruses. Here we analyze 5,002 results by 76 program versions. Substantial improvements were seen in assembly, some due to long-read data. Related strains still were challenging for assembly and genome recovery through binning, as was assembly quality for the latter. Profilers markedly matured, with taxon profilers and binners excelling at higher bacterial ranks, but underperforming for viruses and Archaea. Clinical pathogen detection results revealed a need to improve reproducibility. Runtime and memory usage analyses identified efficient programs, including top performers with other metrics. The results identify challenges and guide researchers in selecting methods for analyses.

Published
2022

36. Growth rings show limited evidence for ungulates’ potential to suppress shrubs across the Arctic

Author

Vuorinen, K. E. (Katariina E. M.), Austrheim, G. (Gunnar), Tremblay, J.-P. (Jean-Pierre), Myers-Smith, I. H. (Isla H.), Hortman, H. I. (Hans I.), Frank, P. (Peter), Barrio, I. C. (Isabel C.), Dalerum, F. (Fredrik), Björkman, M. P. (Mats P.), Björk, R. G. (Robert G.), Ehrich, D. (Dorothee), Sokolov, A. (Aleksandr), Sokolova, N. (Natalya), Ropars, P. (Pascale), Boudreau, S. (Stéphane), Normand, S. (Signe), Prendin, A. L. (Angela L.), Schmidt, N. M. (Niels Martin), Pacheco-Solana, A. (Arturo), Post, E. (Eric), John, C. (Christian), Kerby, J. (Jeff), Sullivan, P. F. (Patrick F.), Le Moullec, M. (Mathilde), Hansen, B. B. (Brage B.), van der Wal, R. (Rene), Pedersen, Å. Ø. (Åshild Ø.), Sandal, L. (Lisa), Gough, L. (Laura), Young, A. (Amanda), Li, B. (Bingxi), Magnússon, R. Í. (Rúna Í.), Sass-Klaassen, U. (Ute), Buchwal, A. (Agata), Welker, J. (Jeffrey), Grogan, P. (Paul), Andruko, R. (Rhett), Morrissette-Boileau, C. (Clara), Volkovitskiy, A. (Alexander), Terekhina, A. (Alexandra), Speed, J. D. (James D. M.), Vuorinen, K. E. (Katariina E. M.), Austrheim, G. (Gunnar), Tremblay, J.-P. (Jean-Pierre), Myers-Smith, I. H. (Isla H.), Hortman, H. I. (Hans I.), Frank, P. (Peter), Barrio, I. C. (Isabel C.), Dalerum, F. (Fredrik), Björkman, M. P. (Mats P.), Björk, R. G. (Robert G.), Ehrich, D. (Dorothee), Sokolov, A. (Aleksandr), Sokolova, N. (Natalya), Ropars, P. (Pascale), Boudreau, S. (Stéphane), Normand, S. (Signe), Prendin, A. L. (Angela L.), Schmidt, N. M. (Niels Martin), Pacheco-Solana, A. (Arturo), Post, E. (Eric), John, C. (Christian), Kerby, J. (Jeff), Sullivan, P. F. (Patrick F.), Le Moullec, M. (Mathilde), Hansen, B. B. (Brage B.), van der Wal, R. (Rene), Pedersen, Å. Ø. (Åshild Ø.), Sandal, L. (Lisa), Gough, L. (Laura), Young, A. (Amanda), Li, B. (Bingxi), Magnússon, R. Í. (Rúna Í.), Sass-Klaassen, U. (Ute), Buchwal, A. (Agata), Welker, J. (Jeffrey), Grogan, P. (Paul), Andruko, R. (Rhett), Morrissette-Boileau, C. (Clara), Volkovitskiy, A. (Alexander), Terekhina, A. (Alexandra), and Speed, J. D. (James D. M.)

Abstract

Global warming has pronounced effects on tundra vegetation, and rising mean temperatures increase plant growth potential across the Arctic biome. Herbivores may counteract the warming impacts by reducing plant growth, but the strength of this effect may depend on prevailing regional climatic conditions. To study how ungulates interact with temperature to influence growth of tundra shrubs across the Arctic tundra biome, we assembled dendroecological data from 20 sites, comprising 1153 individual shrubs and 223 63 annual growth rings. Evidence for ungulates suppressing shrub radial growth was only observed at intermediate summer temperatures (6.5 °C–9 °C), and even at these temperatures the effect was not strong. Multiple factors, including forage preferences and landscape use by the ungulates, and favourable climatic conditions enabling effective compensatory growth of shrubs, may weaken the effects of ungulates on shrubs, possibly explaining the weakness of observed ungulate effects. Earlier local studies have shown that ungulates may counteract the impacts of warming on tundra shrub growth, but we demonstrate that ungulates’ potential to suppress shrub radial growth is not always evident, and may be limited to certain climatic conditions.

Published
2022

44. Stochastic wave packet approach to nonadiabatic scattering of diatomic molecules from metals.

Author

Serwatka, T. and Tremblay, J. C.

Subjects
*DIATOMIC molecules, *SCHRODINGER equation, *TENSOR products, *WAVE packets, *DEGREES of freedom, *INELASTIC scattering, *GOLD
Abstract

In this contribution, we present a quantum dynamical approach to study inelastic scattering of diatomic molecules from metal surfaces at normal incidence. The dissipative dynamics obeys a stochastic Schrödinger equation describing the time-evolution of the system as a piecewise deterministic process. Energy exchange between the molecular vibrational degrees of freedom and the metal electrons is represented using operators in tensor product form, which are coupled via anharmonic transition rates calculated from first-order perturbation theory. Full dimensional observables are obtained by averaging over simulations in 4D—including the internal stretch, the distance to the surface, and the orientation angles—at different surface sites. The method is applied to the state-resolved scattering of vibrationally excited NO from Au(111), revealing important channels for quantized energy relaxation. [ABSTRACT FROM AUTHOR]

Published
2019
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