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RISS 인기검색어
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- 저자 : Belanger, E. (검색결과 11 건)
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Lignin signatures of vegetation and soils in tropical environments
Belanger, E.,Lucotte, M.,Gregoire, B.,Moingt, M.,Paquet, S.,Davidson, R.,Mertens, F.,Passos, C.J.S.,Romana, C. Techno-Press 2015 Advances in environmental research Vol.4 No.4
The few lignin biomarker studies conducted in tropical environments are hampered by having to use references signatures established for plants and soils characteristic of the temperate zone. This study presents a lignin biomarker analysis (vanillyls (V), p-hydroxyls (P), syringyls (S), cinnamyls (C)) of the dominant plant species and soil horizons as well as an analysis of the interrelated terrigenous organic matter (TOM) dynamics between vegetation and soil of the $Tapaj{\acute{o}}s$ river region, an active colonization front in the Brazilian Amazon. We collected and analyzed samples from 17 fresh dominant plant species and 48 soil cores at three depths (0-5 cm, 20-25 cm, 50-55 cm) from primary rainforest, fallow forest, subsistence agriculture fields and pastures. Lignin signatures in tropical plants clearly distinguish from temperate ones with high ratios of Acid/aldehyde of vanillyls ((Ad/Al)v) and P/V+S. Contrary to temperate environments, similarly high ratios in tropical soils are not related to TOM degradation along with pedogenesis but to direct influence of plants growing on them. Lignin signatures of both plants and soils of primary rainforest and fallow forest clearly distinguish from those of non-forested areas, i.e., agriculture fields and pastures. Attalea speciosa Palm trees, an invasive species in all perturbed landscapes of the Amazon, exhibit lignin signatures clearly distinct from other dominant plant species. The study of lignin signatures in tropical areas thus represents a powerful tool to evaluate the impact of primary rainforest clearing on TOM dynamics in tropical areas.
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Roxanne Mariette Belanger,Chantal Mayer-Crittenden,Michelle Brouillette 한국언어재활사협회 2017 Clinical Archives of Communication Disorders Vol.2 No.3
Determining the effects of prematurity on language development is a complex phenomenon. This is especially true when one considers that many children live in multilingual and multicultural environments. When preparing for an evaluation, speech-language pathologists must use assessment tools that allow them to objectively determine the communication abilities of their client; the selection of assessment tools is a critical step in this evaluation process. However, in Official Minority Language Communities (OMLC), this process is made more difficult by the lack of standardized assessment tools and regional norms. At present, no study has examined the linguistic competencies of bilingual children born prematurely and taken into consideration the implication of residing in a minority language community. Using a formal evaluation battery comprised of French and English language tests, this study examined the linguistic knowledge, linguistic processing and working memory of three groups of premature children having average non-verbal language skills: monolingual children speaking English (ENG) (n=5, X=6.6 years; SD=1.1), bilingual children whose dominant language was French (FD) (n=5, X=9.3 years; SD=0.99), and bilingual children whose dominant language was English (ED) (n=3, X=8.1 years; SD=1.5). Results showed that regardless of language dominance, birth weight and degree of prematurity, participants’ scores fell within the average range on simple language tasks, or tasks measuring linguistic knowledge. However, most children experienced difficulties with complex language tasks measuring linguistic processing, as well as working memory. More bilinguals then monolinguals were identified as having a PLI. Also, of those identified, only one participant was identified as having language delays in the preschool period, demonstrating that the difficulties observed in this study developed at a later stage. Long-term follow-up is necessary in order to determine if these weaknesses are maintained, or if they impact academic success.
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Physics at the [FORMULA OMISSION] linear collider
Moortgat-Pick, G.,Baer, H.,Battaglia, M.,Belanger, G.,Fujii, K.,Kalinowski, J.,Heinemeyer, S.,Kiyo, Y.,Olive, K.,Simon, F.,Uwer, P.,Wackeroth, D.,Zerwas, P. M.,Arbey, A.,Asano, M.,Bagger, J.,Bechtle, Springer Berlin Heidelberg 2015 European Physical Journal C Vol.75 No.8
<P>A comprehensive review of physics at an [FORMULA OMISSION] linear collider in the energy range of [FORMULA OMISSION] GeV–3 TeV is presented in view of recent and expected LHC results, experiments from low-energy as well as astroparticle physics. The report focusses in particular on Higgs-boson, top-quark and electroweak precision physics, but also discusses several models of beyond the standard model physics such as supersymmetry, little Higgs models and extra gauge bosons. The connection to cosmology has been analysed as well.</P>
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Sekizaki, Shinya,Aoki, Mutsumi,Ukai, Hiroyuki,Sasaki, Shunsuke,Shigetou, Takaya,Wang, Weihua,Belanger, Jean 대한전기학회 2013 The Journal of International Council on Electrical Vol.3 No.4
With the increasing the number of Photovoltaic generators (PV) connected to distribution system (DS), several concerns such as rise and sudden change of voltage on distribution line are growing in Japan. Step Voltage Regulator (SVR) is well known as the one of voltage control equipment used in current DS. Meanwhile, SVR cannot regulate rapid voltage change because SVR has time delay against variation of voltage. In contrast, Static Var Compensator (SVC) is the effective device to control voltage changed rapidly. However, since the cost of SVC with large capacity is expensive, it is important to reduce the capacity of SVC in order to increase the introduction of SVC into power system. From this background, the novel control method of SVR using solar radiation information to reduce the capacity of SVC is proposed in this paper. The effectiveness of the proposed method is confirmed by numerical simulation with real time simulator.
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Behdin Nowrouzi,Nancy Lightfoot,Lorraine Carter,Michel Larivère,Ellen Rukholm,Diane Belanger-Gardner 한국산업안전공단 산업안전보건연구원 2015 Safety and health at work Vol.6 No.4
Background: The purpose of this study was to examine the relationship nursing personal and workplace system factors (work disability) and work ability index scores in Ontario, Canada. Methods: A total of 111 registered nurses were randomly selected from the total number of registered nurses on staff in the labor, delivery, recovery, and postpartum areas of four northeastern Ontario hospitals. Using a stratified random design approach, 51 participants were randomly selected in four northeastern Ontario cities. Results: A total of 51 (45.9% response rate) online questionnaires were returned and another 60 (54.1% response rate) were completed using the paper format. The obstetric workforce in northeastern Ontario was predominately female (94.6%) with a mean age of 41.9 (standard deviation ¼ 10.2). In the personal systems model, three variables: marital status (p ¼ 0.025), respondent ethnicity (p ¼ 0.026), and mean number of patients per shift (p ¼ 0.049) were significantly contributed to the variance in work ability scores. In the workplace system model, job and career satisfaction (p ¼ 0.026) had a positive influence on work ability scores, while work absenteeism (p ¼ 0.023) demonstrated an inverse relationship with work ability scores. In the combined model, all the predictors were significantly related to work ability scores. Conclusion: Work ability is closely related to job and career satisfaction, and perceived control at work among obstetric nursing. In order to improve work ability, nurses need to work in environments that support them and allow them to be engaged in the decision-making processes.
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Céline Brunot-Gohin,Jean-Luc Duval,Sandra Verbeke,Kayla Belanger,Isabelle Pezron,Gérard Kugel,Dominique Laurent-Maquin,Sophie Gangloff,Christophe Egles 대한치주과학회 2016 Journal of Periodontal & Implant Science Vol.46 No.6
Purpose: The increasing demand for esthetically pleasing results has contributed to the use of ceramics for dental implant abutments. The aim of this study was to compare the biological response of epithelial tissue cultivated on lithium disilicate (LS2) and zirconium oxide (ZrO2) ceramics. Understanding the relevant physicochemical and mechanical properties of these ceramics will help identify the optimal material for facilitating gingival wound closure. Methods: Both biomaterials were prepared with 2 different surface treatments: raw and polished. Their physicochemical characteristics were analyzed by contact angle measurements, scanning white-light interferometry, and scanning electron microscopy. An organotypic culture was then performed using a chicken epithelium model to simulate peri-implant soft tissue. We measured the contact angle, hydrophobicity, and roughness of the materials as well as the tissue behavior at their surfaces (cell migration and cell adhesion). Results: The best cell migration was observed on ZrO2 ceramic. Cell adhesion was also drastically lower on the polished ZrO2 ceramic than on both the raw and polished LS2. Evaluating various surface topographies of LS2 showed that increasing surface roughness improved cell adhesion, leading to an increase of up to 13%. Conclusions: Our results demonstrate that a biomaterial, here LS2, can be modified using simple surface changes in order to finely modulate soft tissue adhesion. Strong adhesion at the abutment associated with weak migration assists in gingival wound healing. On the same material, polishing can reduce cell adhesion without drastically modifying cell migration. A comparison of LS2 and ZrO2 ceramic showed that LS2 was more conducive to creating varying tissue reactions. Our results can help dental surgeons to choose, especially for esthetic implant abutments, the most appropriate biomaterial as well as the most appropriate surface treatment to use in accordance with specific clinical dental applications.
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Brunot-Gohin, Celine,Duval, Jean-Luc,Verbeke, Sandra,Belanger, Kayla,Pezron, Isabelle,Kugel, Gerard,Laurent-Maquin, Dominique,Gangloff, Sophie,Egles, Christophe Korean Academy of Periodontology 2016 Journal of Periodontal & Implant Science Vol.46 No.6
Purpose: The increasing demand for esthetically pleasing results has contributed to the use of ceramics for dental implant abutments. The aim of this study was to compare the biological response of epithelial tissue cultivated on lithium disilicate ($LS_2$) and zirconium oxide ($ZrO_2$) ceramics. Understanding the relevant physicochemical and mechanical properties of these ceramics will help identify the optimal material for facilitating gingival wound closure. Methods: Both biomaterials were prepared with 2 different surface treatments: raw and polished. Their physicochemical characteristics were analyzed by contact angle measurements, scanning white-light interferometry, and scanning electron microscopy. An organotypic culture was then performed using a chicken epithelium model to simulate peri-implant soft tissue. We measured the contact angle, hydrophobicity, and roughness of the materials as well as the tissue behavior at their surfaces (cell migration and cell adhesion). Results: The best cell migration was observed on $ZrO_2$ ceramic. Cell adhesion was also drastically lower on the polished $ZrO_2$ ceramic than on both the raw and polished $LS_2$. Evaluating various surface topographies of $LS_2$ showed that increasing surface roughness improved cell adhesion, leading to an increase of up to 13%. Conclusions: Our results demonstrate that a biomaterial, here $LS_2$, can be modified using simple surface changes in order to finely modulate soft tissue adhesion. Strong adhesion at the abutment associated with weak migration assists in gingival wound healing. On the same material, polishing can reduce cell adhesion without drastically modifying cell migration. A comparison of $LS_2$ and $ZrO_2$ ceramic showed that $LS_2$ was more conducive to creating varying tissue reactions. Our results can help dental surgeons to choose, especially for esthetic implant abutments, the most appropriate biomaterial as well as the most appropriate surface treatment to use in accordance with specific clinical dental applications.
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Nowrouzi, Behdin,Lightfoot, Nancy,Carter, Lorraine,Larivere, Michel,Rukholm, Ellen,Belanger-Gardner, Diane Occupational Safety and Health Research Institute 2015 Safety and health at work Vol.6 No.4
Background: The purpose of this study was to examine the relationship nursing personal and workplace system factors (work disability) and work ability index scores in Ontario, Canada. Methods: A total of 111 registered nurses were randomly selected from the total number of registered nurses on staff in the labor, delivery, recovery, and postpartum areas of four northeastern Ontario hospitals. Using a stratified random design approach, 51 participants were randomly selected in four northeastern Ontario cities. Results: A total of 51 (45.9% response rate) online questionnaires were returned and another 60 (54.1% response rate) were completed using the paper format. The obstetric workforce in northeastern Ontario was predominately female (94.6%) with a mean age of 41.9 (standard deviation = 10.2). In the personal systems model, three variables: marital status (p = 0.025), respondent ethnicity (p = 0.026), and mean number of patients per shift (p = 0.049) were significantly contributed to the variance in work ability scores. In the workplace system model, job and career satisfaction (p = 0.026) had a positive influence on work ability scores, while work absenteeism (p = 0.023) demonstrated an inverse relationship with work ability scores. In the combined model, all the predictors were significantly related to work ability scores. Conclusion: Work ability is closely related to job and career satisfaction, and perceived control at work among obstetric nursing. In order to improve work ability, nurses need to work in environments that support them and allow them to be engaged in the decision-making processes.
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