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Academic literature on the topic 'R. canina'

Author: Grafiati

Published: 2 June 2025

Last updated: 19 July 2025

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Journal articles on the topic "R. canina"

Sołtys-Lelek, A., B. Barabasz-Krasny, P. Turis, I. Turisová, and W. Gruszka. "Biometric analysis of interspecific hybrids between Rosa canina L. and Rosa rubiginosa L. (section Caninae DC. em. Christ.)." Modern Phytomorphology 9 (June 1, 2016): 19–25. https://doi.org/10.5281/zenodo.159692.

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The article presents the biometric analysis of selected morphological features of interspecies hybrid Rosa canina L. × R. rubiginosa L. This hybrid was the result of spontaneous hybridization between the two species falling into section Caninae DC. em. Christ. So far, it has not been studied in terms of morphological characteristics, in particular with respect to the parental forms.

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Kaplan, Klaus. "Features of Rosa ×scabriuscula (R. tomentosa × R. canina) and her parents." FLORISTISCHE RUNDBRIEFE 54 (2020) 54 (2020): 145–59. https://doi.org/10.12906/9783865150790_012.

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Rosa ×scabriuscula SM. has been proven in southwest Lower Saxony. The hybrid between R. tomentosa (subsect. Vestitae) and R. canina (subsect. Caninae) is fertile and spreads much more strongly at the place of growth than the parent species. R. ×scabriuscula can be easily distinguished from the parents. It is very similar to R. tomentosa as seed parental species. R. canina determines the position and persistence of the sepals. It also significantly influences many other characteristics such as hairiness and glandularity. This is remarkable because hybrids between the subsections Rubigineae and Caninae are known to be largely similar to the mother plant and the paternal genome mainly only determines the sepal position and the diameter of the orifice. In the occasional glandular population on the branches, the hybrid shows a feature that was not observed in the parents. Characteristics of the stipules and sepals can be helpful in distinguishing R. tomentosa from similar species and hybrids.

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Kerasioti, Efthalia, Anna Apostolou, Ioannis Kafantaris, et al. "Polyphenolic Composition of Rosa canina, Rosa sempervivens and Pyrocantha coccinea Extracts and Assessment of Their Antioxidant Activity in Human Endothelial Cells." Antioxidants 8, no. 4 (2019): 92. http://dx.doi.org/10.3390/antiox8040092.

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The aim of the present study was the investigation of the antioxidant activity of plant extracts from Rosa canina, Rosa sempervivens and Pyrocantha coccinea. The results showed that the bioactive compounds found at higher concentrations were in the R. canina extract: hyperoside, astragalin, rutin, (+)-catechin and (-)-epicatechin; in the R. sempervirens extract: quinic acid, (+)-catechin, (−)-epicatechin, astragalin and hyperoside; and in the P. coccinea extract: hyperoside, rutin, (−)-epicatechin, (+)-catechin, astragalin, vanillin, syringic acid and chlorogenic acid. The total polyphenolic content was 290.00, 267.67 and 226.93 mg Gallic Acid Equivalent (GAE)/g dw, and the total flavonoid content 118.56, 65.78 and 99.16 mg Catechin Equivalent (CE)/g dw for R. caninna, R. sempervirens and P. coccinea extracts, respectively. The extracts exhibited radical scavenging activity in DPPH and 2,2’-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS)•+ assays and protection from ROO•-induced DNA damage in the following potency order: R. canina > R. sempervirens > P. coccinea. Finally, treatment with R. canina and P. coccinea extract significantly increased the levels of the antioxidant molecule glutathione, while R. canina extract significantly decreased Reactive Oxygen Species (ROS) in endothelial cells. The results herein indicated that the R. canina extract in particular may be used for developing food supplements or biofunctional foods for the prevention of oxidative stress-induced pathological conditions of endothelium.

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AL-MATHIDY, A., ZAS AL-DOSKEY, and MOM SHEHAB. "NUMERICAL TAXONOMY OF THE GENUS ROSA L. (ROSACEAE) GROWN IN THE KURDISTAN REGION OF IRAQ." SABRAO Journal of Breeding and Genetics 52, no. 2 (2023): 442–52. http://dx.doi.org/10.54910/sabrao2023.55.2.16.

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The presented research aimed to study the numerical taxonomy of the genus Rosa L. and to identify and differentiate its various species grown in different regions in Kurdistan, Iraq. This study proceeded in the 2021–2022 season at the College of Education of Pure Science, University of Mosul, Mosul, Iraq. Forty morphological quantitative and qualitative characteristics, including vegetative and reproductive traits (leaves, flowers, fruits, seeds, and pollen grains), gained taxonomic analysis. From there, selection of 12 morphological features finally drew polygonal shapes for the concerned species. The analysis of the polygonal shapes revealed the species owned significant variations in these forms. The similarity among these species ranged between 0.5% to 91.0%, and the highest level of similarity (91.0%) occurred between the two species Rosa canina var. ‘canina,’ and Rosa canina var. ‘verticillacantha,’ and the lowest (0.05%) emerged from the species. R. elyamaitica and R. dumalis subsp. boissieri. From the cluster analysis, the UPGMA dendrogram separated the 13 species into three main groups and subgroups. The first main groups, divided into two subgroups, included the species R. canina var. ‘canina,’ R. canina var. ‘verticillacantha,’ R. canina var. ‘dumetorum,’ R. canina var. ‘deseglisei,’ and R. dumas subsp. boissieri. The second main groups included the species R. eiyamaitica and R. heckeliana subsp. orientalis. The second subgroup included the species R. gallica, R. centifolia, and R. damascena. Moreover, the third main group included the species R. foetida, R. foetida var. bicolor, and R. hemisphareaca.

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Igual, Marta, Adriana Păucean, Dan Cristian Vodnar, Purificación García-Segovia, Javier Martínez-Monzó, and Maria Simona Chiş. "In Vitro Bioaccessibility of Bioactive Compounds from Rosehip-Enriched Corn Extrudates." Molecules 27, no. 6 (2022): 1972. http://dx.doi.org/10.3390/molecules27061972.

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The rosehip (Rosa canina L.) fruit has gained researchers′ attention due to its rich chemical composition in vitamin C, phenols, carotenoids, and high antioxidant activity; meanwhile, polymers such as pea protein are generally recognized as exhibiting a protection role against the extrusion process. Corn snacks extrudates obtained by replacing corn flour with 10% R. canina powder (R) and 10% R. canina with pea protein (RPP) were evaluated for the physicochemical, textural, optical, and nutritional characteristics. A sample manufactured without R. canina powder was used as a control. Hardness, crispiness, chewiness, and solubility index (WSI) of the final extrudates were improved by addition of R. canina and pea protein powder (PP); meanwhile, b* (yellow/blue coordinate), C (chroma), and h* (tone) optical parameters were significantly different from the control sample (p < 0.05). Extrusion highlighted a negative impact on total phenols, carotenoids, vitamin C, and antioxidant activity extrudates, while PP exhibited a good protection against the extrusion process. In vitro digestion increased the bioaccessibility of vitamin C, folate, antioxidant activity, total phenols, and total carotenoids mainly on RPP extrudates.

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Fattahi, Ali, Fatemeh Niyazi, Behzad Shahbazi, Mohammad Hosein Farzaei, and Gholamreza Bahrami. "Antidiabetic Mechanisms of Rosa canina Fruits." Journal of Evidence-Based Complementary & Alternative Medicine 22, no. 1 (2016): 127–33. http://dx.doi.org/10.1177/2156587216655263.

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Rosa canina fruits have been used traditionally for the treatment of diabetes mellitus and its complications. The aim of current study was to evaluate the in vitro mechanism of action of R canina in managing diabetes mellitus. Cell proliferation and cytotoxicity assay were performed on pancreatic β-cells, βTC6. The protective activity of the extract on streptozotocin-induced death in βTC6 cells was studied. The effect of R canina on the metabolism of glucose in HepG2, a hepatocellular carcinoma cell line, was evaluated. The effect of the extract on glucose diffusion across the dialysis membrane, which is a comfortable model for assessing cellular glucose absorption, was evaluated. The results obtained from current study confirmed that R canina extract can act as a growth factor for pancreatic β-cell line providing a novel mechanism for the observed antidiabetic effect of this natural agent. Further preclinical studies are necessary to evaluate the perfect mechanism of action of R canina in diabetes mellitus.

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EL-Banhawy, Ahmed, Carmen Acedo, Sameer Qari, and Ahmed Elkordy. "Molecular Identification and Phylogenetic Placement of Rosa arabica Crép. (Rosaceae), a Critically Endangered Plant Species." Life 10, no. 12 (2020): 335. http://dx.doi.org/10.3390/life10120335.

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The Egyptian narrowly endemic and critically endangered plant species Rosa arabica Crép. was studied employing a taxonomic and molecular approach. Morphological investigations, distance analysis, and phylogenetic reconstruction revealed that R. arabica is a distinct species with great affinity to R. canina and differentiated from R. rubiginosa. Molecular identification based on the sequences of multiple markers single or in combination ITS, matK, rbcL, and trnL-F succeeded in identifying R. arabica at genus and species levels. We evaluated the potential of each marker and a combination of the nuclear ITS -Internal Transcribed Spacer- with one of the plastid markers, matK, rbcL, or trnL-F, to accurately identify Rosa species. All of them were successful in identifying R. arabica. Classification based on DNA sequences shows that R. arabica is placed within section Caninae in a clade comprising R. canina and R. rubiginosa. Moreover, R. arabica is closely related to other European Rosa species. In conclusion, our results indicate that the four DNA markers can provide species resolution in the context of the genus Rosa and relatives, aiming to characterize morphology and genetic diversity in the ecological and economically important genus Rosa.

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Espinoza, T., E. Valencia, R. Quevedo, and O. Díaz. "Physical and chemical properties importance of Rose hip (R. canina, R. rubiginosa): a review." Scientia agropecuaria 7, no. 1 (2016): 67–78. http://dx.doi.org/10.17268/sci.agropecu.2016.01.07.

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Kovács, S., L. Udvardy, and M. Tóth. "Breeding Rosa taxa native to the Carpathian Basin for fruit purposes — fruit quality." Acta Agronomica Hungarica 58, no. 3 (2010): 273–81. http://dx.doi.org/10.1556/aagr.58.2010.3.10.

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The aim of dogrose breeding for fruit purposes is to select genotypes suitable for cultivation and to produce new genotypes by crossing. Physical and chemical analyses, prospective genotypes have been developed from R. inodora , R. corymbifera, R. rubiginosa and R. canina varieties.In the course of the investigations, the highest vitamin C content was found in the hips of R. inodora and R. rubiginosa . The glucose and fructose contents ranged from 9.57–13.36 g/100 g, averaged over several years. The amounts of these two carbohydrates were equal, or in some taxa (e.g. R. corymbifera, R. canina Sz3) the fructose content was higher.The glucose, fructose and vitamin C contents changed at different rates in each taxon during ripening. The results showed that the fructose content reached its peak a week earlier than the glucose content. The vitamin C content of morphological varieties of R. canina did not change substantially during ripening.

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AVCIOGLU, NERMIN HANDE, CANSU SEVIM, ELIF NAZ ALVER, SEBNEM DONMEZ, and ISIL SEYIS BILKAY. "COMPARISON OF BACTERIAL CELLULOSE PRODUCTION BY KOMAGATAEIBACTER INTERMEDIUS STRAIN USING LAVANDULA ANGUSTIFOLIA, ROSA CANINA AND TILIA CORDATA PLANTS AS LOW-COST MEDIA." Cellulose Chemistry and Technology 55, no. 9-10 (2021): 1029–41. http://dx.doi.org/10.35812/cellulosechemtechnol.2021.55.88.

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In this study, the effects of Lavandula angustifolia, Tilia cordata and Rosa canina on cellulose production by Komagataeibacter intermedius strain were investigated. T. cordata was found as the most effective plant (10.64 g/L BC), under the following optimized conditions: 50 g/L plant amount, 8% lactose, 15% inoculum amount at pH=6.0. Total phenolic contents of L. angustifolia (55.42 mg/g), R. canina (16.54 mg/g) and T. cordata (60.03 mg/g), and total protein amounts of L. angustifolia (7.89 g/L), R. canina (3.54 g/L) and T. cordata (5.13 g/L) were analyzed. It has been established that phenolic and protein substances contribute significantly to cellulose formation. Physicochemical analysis showed that all the peaks obtained from FTIR analysis are distinguishable for BC and pellicles show high thermal stability. This research work is the first report on the usage of L. angustifolia, R. canina and T. cordata plants as low-cost substrates in BC production with high yields.

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Dissertations / Theses on the topic "R. canina"

Meza, Cerda María Ignacia. "Desarrollo de un Elisa indirecto con antígeno LPS-R de Brucella abortus cepa RB51, para el diagnóstico serológico de brucelosis canina." Tesis, Universidad de Chile, 2011. http://repositorio.uchile.cl/handle/2250/134172.

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Memoria para optar al Título Profesional de Médico Veterinario El diagnóstico definitivo y específico de la brucelosis en caninos, causada por Brucella canis (B. canis), se realiza mediante el aislamiento de la bacteria desde muestras patológicas o fluidos. Sin embargo, como la enfermedad se caracteriza por presentar periodos abacterémicos, un cultivo negativo no excluye la posibilidad de infección. Debido a que se utiliza ampliamente la detección de anticuerpos frente a la infección y que tanto B. ovis y B. canis comparten componentes antigénicos con la cepa vacuna Brucella abortus RB51 (B. abortus CRB51), ésta podría ser usada como antígeno en el diagnóstico serológico de la enfermedad. En el presente estudio, se describe un enzimoinmunoensayo indirecto (ELISA-I) para el serodiagnóstico de brucelosis canina utilizando un extracto altamente purificado de lipopolisacárido rugoso (LPS-R) de Brucella abortus CRB51, cuyos resultados fueron comparados con la técnica contrainmunoelectroforesis (CIEF) que utiliza un antígeno extraído de una cepa rugosa de B. ovis, con diferentes componentes, incluyendo al LPS-R. En este estudio se incluyeron 156 sueros de perro, muestras para diagnóstico de brucelosis canina mediante CIEF, que fueron recibidas en el laboratorio de Microbiología de FAVET. El análisis de los resultados indicó asociación estadística entre ambas pruebas (p>0,05) para el diagnóstico de brucelosis canina. Además, ambas pruebas obtuvieron un alto índice de concordancia (K= 0,961). Estos resultados hacen del ELISA-I propuesto una prueba promisoria al utilizar un antígeno más purificado y entregar resultados cuantitativos

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Jelena, Nađpal. "Fitohemijski skrining i biološka aktivnost ekstrakata i tradicionalnih proizvoda od plodova divljih ruža (Rosa L.;Rosaceae)." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2017. https://www.cris.uns.ac.rs/record.jsf?recordId=104437&source=NDLTD&language=en.

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Cilj ove doktorske disertacije predstavljalo je ispitivanje fitohemijskog sastava i biolo&scaron;ke aktivnosti vodenih i metanolnih ekstrakata svežih i suvih plodova, kao i voćne ka&scaron;e i džema pripremljenih po tradicionalnoj recepturi od plodova &scaron;est samoniklih vrsta Rosa L.: R. canina, R. dumalis, R. dumetorum, R. tomentosa, R. arvensis, R. sempervirens. Ispitivanje fitohemijskog sastava obuhvatalo je LC -MS/MS analizu 64 odabrana fenolna jedinjenja, hinske kiseline (organske kiseline) kao i tri triterpenoida. Takođe, izvr&scaron;eno je spektrofotometrijsko određivanje sadržaja ukupnih fenolnih i flavonoidnih jedinjenja, kao i vitamina C. Evaluacija biolo&scaron;ke aktivnosti obuhvatala je in vitro ispitivanja  antioksidantne i antiinflamatorne aktivnosti, kao i ispitivanje uticaja ekstrakata odabranih vrsta Rosa na aktivnost enzima acetilholinesteraze i rast tumorskih i netumorskih ćelija.   Sumiranjem dobijenih rezultata može se zaključiti da sveži i suvi plodovi ispitivanih vrsta Rosa, kao i voćne ka&scaron;e i džemovi predstavljaju značajan izvor vitamina C i fenolnih jedinjenja, sa elagnom kiselinom kao najzastupljenijom fenolnom komponentom. Takođe u pojedinim ekstraktima vrsta R. dumetorum i R. tomentosa detektovana je visoka koncentracija ursolne kiseline, dok je hinska kiselina prisutna u značajnoj koncentraciji u svim ispitivanim ekstraktima.   Ekstrakti ispitivanih vrsta, izuzev vrste Rosa arvensis, pokazali su visok antioksidantni potencijal koji se ogleda u njihovoj sposobnosti neutralizacije nekoliko radikalskih vrsta, redukcionom potencijalu i sposobnosti inhibicije lipidne peroksidacije. Ispitivani ekstrakti ispoljili su umerenu antiinflamatornu aktivnost u pogledu inhibicije produkcije odabranih metabolita ciklooksigenaznog (12-HHT, TXB2, PGE 2) i 12-lipooksigenaznog (12-HETE) metaboličkog puta arahidonske kiseline,  posebno prostaglandina E  . Takođe, in vitro ispitivanjem uticaja ekstrakata odabranih vrsta Rosa na aktivnost acetilholinesteraze pokazana je umerena aktivnost. Vodeni ekstrakti i ekstrakti voćnih ka&scaron;a vrsta R. canina, R. tomentosa i R. sempervirens pokazali su umereni inhibitorni potencijal prema rastu HeLa ćelijske linije, dok su ekstrakti vrste R. sempervirens pokazali aktivnost i prema HT-29 ćelijama. Dobijeni rezultati ukazuju na značajni potencijal plodova i tradicionalnih proizvoda ispitivanih vrsta Rosa za upotrebu u proizvodnji nutraceutika i funkcionalne hrane.    The aim of presented doctoral thesis was investigation of phytochemical composition and biological activity of water and methanol extracts of fresh and air-  dried rose hips, as well as purée and jam made according to traditional recipe of  hips of six wild growing Rosa L. species: R. canina, R. dumalis, R. dumetorum, R.  tomentosa, R. arvensis, and R. sempervirens. Examination of phytochemical composition included LC-MS/MS analysis of 64 selected phenolic compounds, quinic  acid (organic acid) and three triterpenoids. Also, total phenolic and flavonoid contents, as well as vitamin C contents were determined spectrophotometrically. Biological activity evaluation of extracts of six Rosa species included in vitro investigation of antioxidant, anti- inflammatory, anti-acetylcholinesterase and cytotoxic activity.   According to obtained results, fresh and air-dried rose hips, as well as their preserves present valuable source of vitamin C and phenolic compounds, especially  ellagic acid, which was the most abundant examined phenolic compound. Furthermore, high concentration of ursolic acid was detected in some Rosa   tomentosa and R.  rumetorum extracts, while notable concentration of quinic acid  was present in all examined extracts.   Extracts of all examined species, apart from Rosa arvensis, showed considerable antioxidant activity in terms of radical scavenging ability, reduction potential and inhibition of lipid peroxidation. Moreover, extracts exhibited moderate anti- inflammatory activity by means of inhibition of the main arachidonic acid metabolites   formed incyclooxygenase-1 (12-HHT, TXB2, PGE 2 ) and 12-lipoxygenase (12-HETE)  pathway, especially prostaglandin E2 . Also, investigation of anti- cetylcholinesterase  activity revealed moderate activity of extracts of all examined species. In addition,  predominantly water extracts of fresh andair-dried rose hips, as well as purée of R.  canina, R. tomentosa and R. sempervirens showed inhibitory activity toward HeLa, while R.sempervirens extracts also inhibited HT-29 cell growth. Presented results indicate significant potential of examined rose hips and their preserves for use as nutraceuticals and functional food.

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Grandpré, François de. "Proposition d'une modélisation du système touristique régional (M. T. R. ) et application au Québec." Aix-Marseille 3, 2005. http://www.theses.fr/2005AIX32040.

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La thèse porte sur deux aspects complémentaires du développement touristique des régions. D'abord le découpage du territoire, ensuite l'identification et la validation des éléments qui forment le système touristique régional et son fonctionnement. Le constat d'un manque de connaissances adaptées aux défis du développement touristique des régions est à l'origine de cette recherche. Cette absence se fait sentir tant sur le plan conceptuel que structurel et instrumental. L'objectif de l'étude est de mettre au point un modèle opérationnel et valider du fonctionnement du tourisme en région. Le Québec sert de terrain d'enquête et de validation. Une des principales contributions théoriques de cette étude est de fournir un modèle intégré et validé du système touristique régional The dissertation examines two complementary aspects of regional tourism development. First, it explores the delimitation of the territory, and then the identification and validation of the elements which make up the regional tourism system and its operation. A lack of conceptual and structural models adapted to the challenges faced by regional tourism development is the basis for this research. These shortcomings are present in conceptual, structural and instrumental aspects of tourism. Hence, the purpose of the study is to develop an operational and validated model of regional tourism. Quebec is used as the ground of investigation and validation. The main theoretical contribution of this study is to provide an integrated and validated model of the regional tourism system

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Smith, Dean Travis. "Discretionary capitalisation of R&D expenditures in Canada and Australia." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0019/NQ38271.pdf.

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Gong, Ming-Peng. "Classification of nilpotent Lie algebras of dimension 7, over algebraically closed fields and R." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0009/NQ30613.pdf.

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Campbell, Zoe. "The impact of trade reform on the research and development incentives for Canadian dairy producers." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/2451.

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Canada has long been a proponent of free trade while at the same time defending the current supply management system that protects the dairy industry from import competition. In the most recent Doha Development Round of talks amongst nations belonging to the World Trade Organization, the validity of Canada's protectionist position has been questioned and it is conceivable that Canada may have to make significant changes in the dairy industry to allow more liberal trade policies to be enacted. The key purpose of this study is to find out how free trade will affect the research and development (R&D) incentives of Canadian dairy farmers. On one hand they may be induced to perform more R&D due to competition effects in order to lower costs and achieve a competitive advantage over the main competitor, the United States. On the other hand they may be induced to perform less R&D due to the spillover effect, which allows the Canadian R&D efforts to be used by the United States at no additional cost. It is found that the outcome of these two opposing forces depends on the market scale effect. If Canada is a net importer when the border opens the spillover effect may dominate and Canadian dairy producers may invest less into R&D than under the current protectionist policies. These results however will switch if Canada is found to be the net exporters. The results also depend on the level of the quota currently in place. If the current quota is chosen at a quantity relatively close to the amount supplied at the monopolistic level, a free trade regime may promote R&D efforts more so than supply management. On the other hand, if the current quota level in Canada is closer to the quantity that would be supplied in a competitive industry, Canadian dairy producers may invest less heavily in R&D efforts under a free trade regime than a supply management system.

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Evans, Aaron Blake. "Frozen fish rights, a socio-legal analysis of R. v. Gladstone, R. v. Van der Peet & R. v. N.T.C. smokehouse, at the Supreme Court of Canada, 1995-1996." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ37524.pdf.

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Lawlor, Nuala. "The Heritage Minutes, the Charles R. Bronfman Foundation's construction of the Canadian identity." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0017/MQ54996.pdf.

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De, Varennes Benoit. "Ex-vivo canine heart preservation : metabolic studies." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=56680.

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The recently developed method of nuclear magnetic resonance spectroscopy allows for continuous monitoring of high energy phosphate compound (ATP and Phosphocreatine) and intracellular pH of tissues or whole organs. In other to better understand why ex-vivo hearts can be preserved for longer periods when perfused with oxygenated crystalloid solutions under hypothermic conditions, two groups of canine hearts were studied with nuclear magnetic resonance spectroscopy. Group 1 = Canine hearts preserved for 4 hours by immersion into a 4$ sp circ$C saline solution. Group 2 = Canine hearts preserved for 24 hours by continuous coronary perfusion with a modified oxygenated Krebs solution at 4$ sp circ$C. The longer preservation of ATP and phosphocreatine, as well as the slower decrease of intracellular pH in Group II hearts are hypothesized to be the reasons why perfused hearts can be preserved for longer periods of time.

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Rodriguez, Naranjo Gloria Estella. "Personal a/r/tographic narratives of cultural displacement : in Latino American immigrants living in Canada." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/43217.

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Immigration is the act of moving to and settling into a new country. It means starting again while leaving many people and things behind. This phenomenon has been embraced, embodied, lived, celebrated and suffered by many people for various reasons throughout history. Factors such as war and political oppression, poor living conditions, economic opportunity and stability are explanations for why people decide to leave their native countries. Therefore, immigration embodies loss of one’s culture but at the same time embodies celebration for enhanced opportunities, when arriving and adjusting to the codes of a new system. Understanding cultural displacement as the sensation of being in a third space, of having to re-invent yourself again, adjusting day-by-day to a new culture, this study examines how Latin American immigrants to Canada confront cultural displacement. Applying a/r/tography and photo-elicitation as research methodologies the study sets up conditions for participants to engage and construct meaning together about being away from home. This research analyzes the extent to which Latin American immigrants to Canada negotiate being in-between these two spaces (their country of origin and Canada). It does this primarily through the creation of a series of photographs and conversations. Some of the findings reveal that indeed Latin American immigrants acknowledge that the process of settlement in a foreign land is complicated and it takes time to adjust and understand the culture. At the same time Latin American immigrants admit the importance of comprehending, cultivating and embracing Canadian culture, in order to merge easily in its communities. Similarly, the findings unfold the way participants created their own version of what it means to be Canadians rather than learning simply from others about its significance. As immigrants, the group I studied kept some features of Latin cultures alive in Canada, in this way, the study presents a new understanding of what is possible while dwelling in the in-between.

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Books on the topic "R. canina"

Morton, Desmond. A military history of Canada. 4th ed. McClelland & Stewart, 1999.

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(Canada), Transportation Development Centre. Selected R & D achievements. 2nd ed. The Centre, 1991.

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McConnell, William H. William R. McIntyre: Paladin of the common law. Published for Carleton University by McGill-Queen's University Press, 2000.

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Canada, Economic Council of. Enjeux des propositions r[a]ecentes de r[a]eforme de la Loi sur la faillite. Economic Council of Canada, 1990.

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Reid, Dennis. Lucius R. O'Brien: Visions of Victorian Canada. Art Gallery of Ontario, 1990.

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Reid, Dennis. Lucius R. O'Brien: Visions du Canada victorien. Art Gallery of Ontario, 1990.

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1832-1899, O'Brien L. R., and Art Gallery of Ontario, eds. Lucius R. O'Brien: Visions of Victorian Canada. Art Gallery of Ontario, 1990.

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Baker, K. P. Canine and feline dermatology: K. P. Baker, L. R. Thomsett. Blackwell Scientific Publications, 1990.

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Canada. Energy, Mines and Resources Canada., ed. R-2000: The home for today-- and tomorrow. Energy, Mines and Resources Canada, 1986.

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Canada. Natural Sciences and Engineering Research Council of Canada. Synergy awards for R&D partnerships. Natural Sciences and Engineering Research Council of Canada, 1999.

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Book chapters on the topic "R. canina"

Barbarie, Alain J. "Evaluating Federal R&D in Canada." In Evaluating R&D Impacts: Methods and Practice. Springer US, 1993. http://dx.doi.org/10.1007/978-1-4757-5182-6_8.

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de Clercq, Trevor. "Developing Contemporary Rhythm Skills Through Contemporary R&B." In Expanding the Canon. Routledge, 2022. http://dx.doi.org/10.4324/9781003204053-21.

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Rossy, Clàudia, María Gámiz, Silvia Recoder, et al. "Positive Psychology and Religion/Spirituality Across Cultures in Europe, Non-US North America, and South America." In Handbook of Positive Psychology, Religion, and Spirituality. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-10274-5_15.

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AbstractThe purpose of this chapter is to synthesize and critique the research on positive psychology and psychology of religion/spirituality (R/S) that has been conducted in Europe, non-US North America (Canada and Central America), and South America. In light of the importance of considering cultural differences and similarities across religions and continents, this chapter synthesizes how cultural factors may affect research and practice on positive psychology and the psychology of R/S in these regions of the world. We start with a brief overview of the sociocultural and religious backdrop of these regions. Then we turn to review the main findings in each area, specifying how and what topics have been emphasized in the research on positive psychology and R/S. Finally, we consider practical implications for research and clinical practice, as well as some gaps in the current literature and future directions for research.

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Andrukaitis, E. E., and Rod McMillan. "Materials Issues for Hydrogen R&D in Canada." In Ceramic Transactions Series. John Wiley & Sons, Inc., 2008. http://dx.doi.org/10.1002/9780470483428.ch3.

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Mothe, John, and Gilles Paquet. "Critical Technologies, Policy and Security in a Middle Power Country: A Case of Avionics and Systems Integration in Canada." In Military R&D after the Cold War. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1730-9_7.

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Falkert, Anika. "La variable R dans le parler des Îles-de-la-Madeleine - vers une analyse pluridimensionnelle de la variation phonétique." In Français du Canada – Français de France VIII. Walter de Gruyter, 2009. http://dx.doi.org/10.1515/9783110231045.101.

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Cook, Alana N. "R. v. D.C. and the Disclosure of HIV Status to Sexual Partners in Canada." In Encyclopedia of Domestic Violence. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-030-85493-5_1469-1.

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Phillips, Peter W. B. "Private-Public R&D in the Development of the Canola Industry in Canada." In Innovation, Technology, and Knowledge Management. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-67958-7_5.

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Jackman, Jennifer, Jeffrey Wood, Elhachmi Essadiqi, et al. "Overview of Key R&D Activities for the Development of High-Performance Magnesium Materials in Canada." In Materials Science Forum. Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-968-7.21.

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Harris, Roma, Tiffany Veinot, Leslie Bella, Irving Rootman, and Judith Krajnak. "Helpers, Gatekeepers and the Well-Intentioned: The Mixed Blessings of HIV/AIDS Info(r)mediation in Rural Canada." In Mediating Health Information. Palgrave Macmillan UK, 2008. http://dx.doi.org/10.1057/9780230227323_10.

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Conference papers on the topic "R. canina"

Eadie, R. L., K. E. Szklarz, and R. L. Sutherby. "Corrosion Fatigue and Near-Neutral pH Stress Corrosion Cracking of Pipeline Steel in Very Dilute Carbonate/Bicarbonate with and without the Presence of Hydrogen Sulfide Using the Compliance Technique." In CORROSION 2003. NACE International, 2003. https://doi.org/10.5006/c2003-03527.

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Abstract Crack advance has been studied in a X-70 pipeline steel, using the compliance technique. The electrolyte was very dilute brine bubbled with 10% carbon dioxide. Cracking rates were studied at a range of frequencies and R-values. The R-values simulated typical high-pressure gas service, but the frequency used was significantly higher. Similar testing was carried out in the presence of a 1% hydrogen sulfide using the Shell Canada sour gas test facility. The crack advance observed in dilute brine bubbled with 10% carbon dioxide could be explained using the rates of corrosion fatigue and a threshold ΔK of WMPa√m. If we extrapolate the results to much lower frequency then crack advance in the pipelines that is attributed to near-neutral pH stress corrosion cracking could also be explained as corrosion fatigue provided the ΔK at about R=0.65 exceeds this threshold value. Since the extrapolation is over at least two orders of magnitude in frequency this requires further experimental confirmation. The effect of 1% hydrogen sulfide was to dramatically increase the cracking rate at the tested frequencies.

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Nagarajan, Ravi, Steve Liebhart, Pedro Escudero, and Shahab Soltaninia. "Bio Fuel Feedstock and Finish Products – Linings Case Study." In CONFERENCE 2023. AMPP, 2023. https://doi.org/10.5006/c2023-18898.

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Abstract The production of Renewable Fuels has been embraced by the Global Oil and Gas Industry to adopt more environmentally sustainable practices. This remarkable technology switch has been made possible by concerted research and design changes to traditional sourcing, handling, refining, and storing of natural oils feedstocks and bio-based finish products. Each end of the production chain of biofuels presents corrosion challenges to the infrastructure being used in the process and they must be separately and thoroughly understood by the coatings industry. This presentation examines lessons learned by a leading coatings manufacturer when answering the call for recommending adequate linings for feedstock and finish product storage tanks with an emphasis on an actual project done in the province of Newfoundland and Labrador in Canada where a mothballed refinery is being refurbished to produce biofuels. The R & D has been scaled up at different part of the world to mitigate corrosion in Biofuels markets. The raw feed stock supply options keep growing from standard vegetable seed oils to remaining agricultural waste, from animal fat to animal wastes and municipal wastes, are increasing the unknown variables in the process causing corrosion and solutions to mitigate. These waste to fuel category is attracting diversified feed stocks in offering from the new market. The information exchanges’ & improved tests could help in the lining selection process.

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Wang, Y. "Boundary Element Evaluation of Shipboard Cathodic Protection Systems." In CORROSION 2004. NACE International, 2004. https://doi.org/10.5006/c2004-04102.

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Abstract The shaft grounding systems used on board HMC ships have substantially reduced the shaft-to-hull resistance and, thus, improved the performance of the shipboard impressed current cathodic protection (ICCP) system. Under some circumstances, however, the shaft grounding systems have been left on while the ICCP system was turned off. This led to the accelerated corrosion of the exposed steel ship hull on paint holidays because of the substantial difference of the electric potentials between the steel ship hull and the nickel-aluminum bronze propellers. The extent of the increased corrosion rate of the steel ship hull depends on a variety of conditions including the locations and areas of the paint holidays on the ship hull, the overall paint degradation, and seawater domain where the ship is located. A boundary element code, named CPBEM, developed at Defence R&D Canada – Atlantic was used to numerically simulate the galvanic corrosion of the steel hull under the afore-mentioned various conditions. A box model was also used to demonstrate the effect of fluid domain on galvanic corrosion current and solution resistance. The modelling results have shown that the paint damage area significantly affects the galvanic corrosion rate, while the effect of the paint damage location on the galvanic corrosion rate is not significant when the ship is in an open sea. The little solution resistance encountered in the area away from the anodes and the cathode is attributed to the much larger cross sectional area for the galvanic current path in the large volume of seawater. The potential contours and galvanic corrosion current at various degrees of the paint degradation were also demonstrated.

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Deptuck, D. K., and D. J. Gale. "Supporting silicon photonics R&D in Canada." In 2016 Photonics North (PN). IEEE, 2016. http://dx.doi.org/10.1109/pn.2016.7537969.

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Yangdong Liao, Ru-Xin Na, and Derek Rayside. "Accurate ECG R-peak detection for telemedicine." In 2014 IEEE Canada International Humanitarian Technology Conference (IHTC). IEEE, 2014. http://dx.doi.org/10.1109/ihtc.2014.7147524.

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Digney, Bruce L. "Vehicle intelligence research at Defence R&D Canada." In Defense and Security, edited by Grant R. Gerhart, Charles M. Shoemaker, and Douglas W. Gage. SPIE, 2005. http://dx.doi.org/10.1117/12.606409.

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Finke, U., J. Schneider, E. Friderichs, L. Flohé, and H. Giertz. "MYOCARDIAL SALVAGE BY COMBINED TREATMENT WITH RECOMBINANT SINGLE-CHAIN UROKINASE-TYPE PLASMINOGEN ACTIVATOR AND RECOMBINANT HUMAN SUPEROXIDE DISMUTASE IN A CANINE CORONARY THROMBOSIS MODEL*." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643570.

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Recanalization of thrombotic coronary occlusion with fibrinolytic treatment is a promising approach to salvage jeopardized ischemic myocardium. However, the success of thrombolytic treatment of myocardial infarction may be curtailed by the risk inherent to reperfusion. Cell damage upon reoxygenation after an ischemic period is tentatively attributed to the formation of oxygen-derived free radicals. Improved myocardial salvage is therefore expected from coadministration of a free radical scavenger and fibrinolytic treatment. We tested this hypothesis in a canine model of left anterior circumflex coronary artery (LCX) thrombosis. Thrombolysis was achieved with the fibrin- selective single-chain urokinase-type plasminogen activator of recombinant origin (r-scu-PA). As enzymatic scavenger of oxygen radicals recombinant human superoxide dismu-tase (r-HSOD) was used. The three experimental groups were: group I (n=4) did not receive any treatment after LCX thrombosis; in group II (n=9) at 100 min after LCX thrombosis r-scu-PA (20 μg/kg/min i.v. for 30 min) was infused; dogs in group III (n=8) received concomitant treatment with r-scu-PA and r-HSOD (10 mg/kg i.v. for 60 min). Infarct size as percent of the risk zone was 38.2 ± 4.1 in group I, 25.3 ± 3.7 in group II (p ≤ 0.05 vs group I) and 14.9 ± 3.2 in group III (p ≤ 0.05 vs group II). Incidence of reperfusion arrhythmias and increase in plasma CK were significantly diminished by r-HSOD when compared to dogs receiving r-scu-PA only. There were no significant differences in hemodynamic parameters between the groups. In conclusion, in terms of infarct size reduction, suppression of reperfusion arrhythmias and attenuation of intracellular enzyme release the combined treatment with r-scu-PA and r-HSOD yielded a significant higher myocardial salvage versus thrombolytic treatment alone in a canine LCX thrombosis model.* This work is part of the doctoral dissertation of Miss U. Fincke

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Cheng, J. J. Roger. "Health Monitoring of Structures — R & D Activities in Canada." In Rehabilitating and Repairing the Buildings and Bridges of the Americas Conference 2001. American Society of Civil Engineers, 2002. http://dx.doi.org/10.1061/40613(272)7.

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Van de Water, A., R. Xhonneux, and F. De Clerck. "ANTI-THROMBOTIC EFFECT IN CANINE CORONARY ARTERIES OF A COMBINED TXA2 synthetase/TXA2-prostaglandin ENDOPEROXIDE RECEPTOR INHIBITOR (R 68070)." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643463.

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The effects of R 68070 an oxime-alkane carboxylic acid derivative combining specific thromboxane A2 (TXA2) synthetase inhibition with TXA2/prostaglandin endoperoxide receptor blockade in one molecule, on thrombus formation in a coronary artery following electrically-induced endothelial injury and on its myocardial repercussions were examined in dogs. In an open-chest model in anaesthetized dogs, a stainless steel electrode was inserted into the left anterior descending coronary artery (LAD) distally (+ 1 cm) from an electromagnetic flow probe. ECG and heart rate were derived from limb leads. Serum TXB2 levels were measured by RIA on venous spontaneously coagulated blood (1 h, 37°C). Endothelial cell injury in the LAD coronary artery was induced by the application of an anodal current of 300 μA during 30 min; after an additional 60 min observation period, the thrombus wet weight was determined.In comparison with solvent treatment (n = 8), R 68070 (1.25 mg/kg I.V. 10 min before electrical stimulation, n = 7), significantly reduced the thrombus mass (solvent : 43 mg; R 68070 : 18 mg median value, p < 0.05), the incidence of ECG changes indicative for myocardial ischemia (fibrillation : solvent 1/8; R 68070 0/7; arrhythmias : solvent 3/8; R 68070 2/7; ST changes : solvent 7/8; R 68070 1/7, p < 0.05) and the decrease in coronary blood flow after electrical stimulation (solvent : from 13 to 6.5 ml/min; R 68070 : from 13 to 11 ml/min median values, p < 0.05). Serum TXB2 levels were reduced by 92 % at 100 min after the injection of the active compound (median value, n = 7).Heart rate and coronary blood flow measured before the induction of the endothelial injury were not modified by R 68070.The present study thus demostrates that R 68070 exerts a potent anti-thrombotic effect in canine coronary arteries. The relative contributions to this effect of TXA2 synthetase inhibition and of TXA2/prostaglandin endoperoxide receptor blockade exerted by the compound are being investigated.

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Luheshi, Matt, David Roberts, Hamish Wilson, Janice Weston, and Keith Nunn. "Atlantic Canada Offshore R&D: Nova Scotia Play Fairway Analysis." In Offshore Technology Conference. Offshore Technology Conference, 2011. http://dx.doi.org/10.4043/22001-ms.

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Reports on the topic "R. canina"

Wojciechowski, M. J. Recherche et développement dans le secteur des minéraux. Natural Resources Canada/CMSS/Information Management, 1989. http://dx.doi.org/10.4095/331554.

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Canada has the potential for good long-term development of its mineral resources, and needs to maintain a competitive position for crude minerals in export markets. Therefore, Canada should strongly support the mineral exploration and mining sectors. This conclusion is reinforced by the finding that most of the other countries in this study, which represent much of the world's mining technology and mining education expertise, are in or are approaching the decline phase of their mining industries' life cycles. They are also dependent on imported crude minerals, and are turning their R&amp;D focus away from primary resources towards substitution and efficiency in the use of raw materials. This pattern of R&amp;D focus is not appropriate for Canada, although it is in fact being followed. Canada should stress R&amp;D in extractive metallurgy with a special emphasis on environmental and health aspects and on conservation of energy. This can give Canada a comparative advantage in smelting and refining over the United States and Western Europe, where the cost pressures resulting from dependence on raw materials and energy and from environmental controls make such R&amp;D investments relatively unattractive. Canada should make special efforts to compensate for and reduce the negative effects of the prevalent separation of scientists and engineers from management and formulators of public policy. These three initiatives, if adopted, should help Canada to realize the benefits of its mineral endowment, to keep its mineral sector viable for the long term, to take advantage of opportunities arising from the decline of the primary mineral sectors in other countries, and to avoid being le ft potential. behind by newly emerging countries with mineral The views expressed in this report and in the background study are those of the author and not necessarily those of the Centre for Resource Studies and its sponsors, or of The Canada Centre for Mineral and Energy Technology (CANMET).

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Corchuelo Rodriguez, Camilo Alejandro, and Maria Esperanza Mora Niviayo. Noticias de la semana - Impacto científico de AGROSAVIA. Corporación Colombiana de Investigación Agropecuaria - AGROSAVIA, 2023. http://dx.doi.org/10.21930/agrosavia.divulgacion.2023.2.

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Noticias de la semana es una acción dentro de la Estrategia Corporativa de Difusión y Divulgación Científica y Tecnológica. Su objetivo principal es comunicar los avances e impacto científico de investigadores, centros de investigación, redes y grupos de investigación, con la finalidad de potenciar la divulgación y difusión de AGROSAVIA a nivel nacional e internacional. #CienciaAbierta #CienciaConConciencia 📊Cifras del impacto científico de AGROSAVIA: 10.21930/agrosavia.Boletin.2023.1 💡Participa en la #Ideatón https://forms.office.com/r/cDiJwriNX6 Cana de difusión WhatsApp: https://goo.su/JtYb1lU

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Garrett, R. G., and Y. Chen. rgr: The GSC (Geological Survey of Canada) Applied Geochemistry EDA Package - R tools for determining background ranges and thresholds. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2007. http://dx.doi.org/10.4095/224575.

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Riedel, Michael, Jörg Bialas, Elisa Klein, Cord Papenberg, and Janine Berndt. Technical Report for Raw 2D MCS Reflection Data, R/V Sonne Cruise 294, Vancouver (Canada) – Port Hueneme (USA), 13/09/22 – 27/10/23. GEOMAR Helmholtz Centre for Ocean Research Kiel, Germany, 2024. http://dx.doi.org/10.3289/tr_2d-mcs_so294.

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The raw 2D multichannel seismic reflection data in this project were acquired during expedition SO294 offshore Vancouver Island, Canada, using two different sources, i.e., a single GI Gun and a GGun array. The data were recorded with an 184-channel streamer. The objectives of expedition SO294 were twofold: provision of geophysical images to constrain the hazard potential of the Cascadia subduction zone, and to constrain the geophysical properties of the oceanic crust to assess its storage potential for carbon capture and storage (CCS). The data comprise 1660 line kilometers and are provided in raw format (SEG-D) and associated standardized metadata. Detailed information on the acquisition can be found in the SO294 cruise report (https://doi.org/10.48433/cr_so294). In addition, this technical report is provided with the 2D multichannel seismic reflection data set.

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Werle, D. Radar remote sensing for application in forestry: a literature review for investigators and potential users of SAR data in Canada. Natural Resources Canada/CMSS/Information Management, 1989. http://dx.doi.org/10.4095/329188.

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Information provided in this document allows potential users of synthetic aperture radar (SAR) imagery as well as investigators participating in the Canadian Radar Data Development Program (RDDP) to obtain an overview of achievements, limitations and future potential of radar remote sensing for application in forestry, as portrayed in the published literature. Investigations concerned with radar remote sensing and its potential for application in forestry are reviewed. The main focus of these studies was the determination of microwave backscatter characteristics of forestry targets using different radar parameters, such as frequency, polarizations and incidence angle. Examples of selected targets include the following: coniferous and deciduous tree species, stands of different structure, age, tree height, clearcuts, or forestry environments in general as they change with the seasons. More than 75 studies based on airborne imaging radar, spaceborne radar as well as scatterometer data have been considered. Previous reviews which summarize information available in western Europe and North America are briefly introduced. Then, recent investigations covering the time period from the early 1980's onward are portrayed and discussed. The main results are summarized in a set of conclusions, followed by list of selected references and a list of Canadian institutions and organizations currently involved in radar remote sensing R&amp;D for application in forestry.

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Clulow, F. V., T. P. Lim, and N. K. Dave. Radionuclide levels and 226Ra concentration ratios between water, vegetation, and tissues of ruffed grouse (Bonasa umbellus) from a watershed with U tailings near Elliot Lake, Canada. Natural Resources Canada/CMSS/Information Management, 1989. http://dx.doi.org/10.4095/331773.

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Radionuclide levels measured in bone, muscle, kidney, and liver tissues, gut contents, and diet items of 47 grouse from the Serpent River drainage basin, containing U tailings at Elliot Lake, and from control areas in Ontario, showed variation by site and tissue. The mean level of 226Ra in bones of grouse sampled from Elliot Lake (28.5 mBq.g -1) was higher than that in bones of birds from a distant control site near Sudbury, Ontario (8.0 mBq.g -1), but similar to the value in a local control population (28.1 mBq.g -1). Birds from Mid- and Low-Serpent River basin populations (with 17.1 and 17.7 mBq.g-1 respectively) did not differ from local or distant control populations; muscle, liver, and kidney had lower 226Ra concentrations which did not differ significantly among populations. Levels of 226Ra in the crop contents and chyle did not differ significantly by site and were similar to those of food items consumed by the birds. Chyme values were higher in birds sampled in Elliot Lake and at the local control site than in those taken at the distant control site; birds sampled downstream from Elliot Lake did not differ from distant controls in this regard. Levels of 232Th, 236Th were below detection limits (0.1 gg.g-1 and 5.0 mBq.g-1 respectively) in bone, muscle, and liver tissue in two grouse with elevated levels of 226Ra. Other radionuclides were measurable in some tissues: 238U in bone at 0.4 gg.g-1 , in muscle to 0.2 gg.g -1 , in liver to 1.0 gg.g -1 ; 228Th was found only in muscle (8.0 mBq.g -1 ); 216Po was found in bone, muscle, and liver (maxima: 24.0, 7.0, 16.0 mBq.g-1 ) with the exception of one muscle sample; 216Pb was detected in only one liver sample (50.0 mBq.g -1 ). Environmental levels fell within ranges previously reported at the sites, or at similar locations elsewhere. Leaves of trembling and largetooth aspen growing in the basin had mean 226Ra levels of 41.8 and 52.7 mElq.g-1 (dry 215.4 mBq.g -1 (ai weight) respectively, fungal material caried up to r-dried), with some variation by site. River and lake waters sampled near the U tailings had 118.1 mBq.L -1- of dissolved 226Ra and at the distant control site the value was 12.1 mBq.L -1. The concentration ratios (CR) between bone of grouse collected at the Elliot Lake sites and trembling and largetooth aspen leaves were 1.38 and 1.09 (fresh weight basis); from other diet items and other tissues the values were less than unity. Water to tissue bone ratios, based on dissolved 226Ra levels (mBq.L -2) ranged to 144.08. People eating grouse from the study area are unlikely to consume radionuclides in excess of limits currently established by Canadian regulatory authorities.

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Blais-Stevens, A., A. Castagner, A. Grenier, and K D Brewer. Preliminary results from a subbottom profiling survey of Seton Lake, British Columbia. Natural Resources Canada/CMSS/Information Management, 2023. http://dx.doi.org/10.4095/332277.

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Seton Lake is a freshwater fiord located in southwestern British Columbia, roughly 4 km west of Lillooet and 250 km north-northeast of Vancouver. Located in the Coast Mountains, it is an alpine lake about 22-km long and roughly 1-1.5 km wide. It is separated from nearby Anderson Lake, located to the west, by a large pre-historic rock avalanche deposit at Seton Portage. The lake stands at about 243 m above sea level and is up to about 150 m deep (BC gov., 1953). Water level is controlled by a hydroelectric dam (i.e., Seton dam) located at the eastern end of the lake. Here, the lake drains east into Seton Canal, a 5 km diversion of the flow of the Seton River, which begins at the Seton dam. The Seton Canal pushes water to the Seton Powerhouse, a hydroelectric generating station at the Fraser River, just south of the community of Sekw'el'was and confluence of the Seton River, which drains into the Fraser River at Lillooet. Seton Portage, Shalatlh, South Shalatlh, Tsal'alh (Shalath), Sekw'el'was (Cayoosh Creek), and T'it'q'et (Lillooet) are communities that surround the lake. Surrounded by mountainous terrain, the lake is flanked at mid-slope by glacial and colluvial sediments deposited during the last glacial and deglacial periods (Clague, 1989; Jakob, 2018). The bedrock consists mainly of mafic to ultramafic volcanic rocks with minor carbonate and argillite from the Carboniferous to Middle Jurassic periods (Journeay and Monger, 1994). As part of the Public Safety Geoscience Program at the Geological Survey of Canada (Natural Resources Canada), our goal is to provide baseline geoscience information to nearby communities, stakeholders and decision-makers. Our objective was to see what kind of sediments were deposited and specifically if we could identify underwater landslide deposits. Thus, we surveyed the lake using a Pinger SBP sub bottom profiler made by Knudsen Engineering Ltd., with dual 3.5 / 200 kHz transducers mounted to a small boat (see photo). This instrument transmits sound energy down through the water column that reflects off the lake bottom surface and underlying sediment layers. At the lake surface, the reflected sound energy is received by the profiler, recorded on a laptop computer, and integrated with GPS data. These data are processed to generate a two-dimensional image (or profile) showing the character of the lake bottom and underlying sediments along the route that the boat passed over. Our survey in 2022 recorded 98 profiles along Seton Lake. The red transect lines show the locations of the 20 profiles displayed on the poster. The types of sediments observed are mostly fine-grained glaciolacustrine sediments that are horizontally bedded with a subtle transition between glaciolacustrine to lacustrine (e.g., profiles A-A'; C-C'; F-F'; S-S'). Profile S-S' displays this transition zone. The glaciolacustrine sediments probably were deposited as the Cordilleran Ice Sheet retreated from the local area (~13,000-11,000 years ago; Clague, 2017) and the lacustrine sediments, after the ice receded to present-day conditions. Some of the parallel reflections are interrupted, suggesting abrupt sedimentation by deposits that are not horizontally bedded; these are interpreted as landslide deposits (see pink or blue deposits on profiles). The deposits that show disturbance in the sedimentation found within the horizontal beds are thought to be older landslides (e.g., blue arrows/deposits in profiles C-C'; E-E'; F-F'; G-G'; I-I'; J-J'; K-K'; N-N'; P-P'; Q-Q'; R-R'; T-T'; U-U'), but the ones that are found on top of the horizontally laminated sediments (red arrows/pink deposits), and close to the lake wall, are interpreted to be younger (e.g., profiles B-B'; C-C'; H-H'; K-K'; M-M'; O-O'; P-P'; Q-Q'). At the fan delta just west of Seton dam, where there was no acoustic signal penetration, it is interpreted that the delta failed and brought down coarser deposits at the bottom of the lake (e.g., profiles H-H'; M-M'; and perhaps K-K'). However, these could be glacial deposits, bedrock, or other coarser deposits. Some of the deposits that reflect poor penetration of the acoustic signal, below the glaciolacustrine sediments, could represent glacial deposits, old landslide deposits, or perhaps the presence of gas (orange arrows; e.g, B-B'; D-D'; J-J'; O-O', T-T'). The preliminary results from sub bottom profiling reveal that there are underwater landslides deposits of widely varying ages buried in the bottom of the lake. However, the exact timing of these is not known. Hence our preliminary survey gives an overview of the distribution of landslides where there seems to be a larger number of landslides recorded in the narrower eastern portion of the lake.

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Task 21 - Evaluation of Artificial Freeze Crystallization and Natural Freeze-Thaw Processes for the Treatment of Contaminated Groundwater at the Strachan Gas Plant in Alberta, Canada - Sour Gas Remediation Technology R{ampersand}D. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/637784.

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Academic literature on the topic 'R. canina'

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Journal articles on the topic "R. canina"

Dissertations / Theses on the topic "R. canina"

Books on the topic "R. canina"

Book chapters on the topic "R. canina"

Conference papers on the topic "R. canina"

Reports on the topic "R. canina"