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Journal articles on the topic "Lawrence region"

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LOTZ, L. N. "Present status of Sicariidae (Arachnida: Araneae) in the Afrotropical region." Zootaxa 3522, no. 1 (October 19, 2012): 1. http://dx.doi.org/10.11646/zootaxa.3522.1.1.

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In this paper the present state of knowledge of the family Sicariidae in the Afrotropical region is discussed. The Sicariidaein the Afrotropical region, as it stands at present, consists of two genera, viz. Sicarius Walckenaer, 1847 (subfamilySicariinae) with six species: S. albospinosus Purcell, 1908, S. damarensis Lawrence, 1928, S. dolichocephalus Lawrence,1928, S. hahni (Karsch, 1878), S. spatulatus Pocock, 1900, and S. testaceus Purcell, 1908 and Loxosceles Heineken &Lowe, 1835 (subfamily Loxoscelinae) with 13 species: L. fontainei Millot, 1941, L. foutadjalloni Millot, 1941, L. lacroixiMillot, 1941, L. meruensis Tullgren, 1910, L. neuvillei Simon, 1909, L. pallidecolorata (Strand, 1906), L. parramiNewlands, 1981, L. rufecens (Dufour, 1820), L. smithi Simon, 1897, L. speluncarum Simon, 1893, L. spinulosa Purcell,1904, L. valida Lawrence, 1964 and L. vonwredei Newlands, 1980. Loxosceles parrami Newlands, 1981 is here renamedto L. parramae (Newlands, 1981), as it was named for a Miss Parram. Loxosceles valida Lawrence, 1964 is heretransferred to the genus Drymusa Simon, 1893 (Drymusidae) and three species of Loxosceles is revalidated (L. bergeri Strand, 1906, L. pilosa Purcell, 1908 and L. simillima Lawrence, 1927).
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Beaulieu, Jean, and Jean-Pierre Simon. "Variation in cone morphology and seed characters in Pinus strobus in Quebec." Canadian Journal of Botany 73, no. 2 (February 1, 1995): 262–71. http://dx.doi.org/10.1139/b95-029.

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To investigate the patterns of variation in white pine (Pinus strobus L.), 10 natural populations from Quebec were compared using the phenotypic variation of cone and seed traits. Eight characters were measured on 10 cones collected from 30 trees in each of the 10 sampled populations. Four populations were from the Ottawa River region and four from the St. Lawrence Lowlands region, while two populations were at the margin of the natural range of the species in Quebec, from the Abitibi region and Anticosti Island. Significant differences among populations were detected for each character. Estimates of repeatability of these traits were relatively high, suggesting substantial genotypic control over them. These estimates were consistent from population to population. Results of multivariate analyses suggest that populations from the Ottawa River region are similar to those from the St. Lawrence region, with populations from these regions diverging only in cone scale length. However, populations from the St. Lawrence region were more distinct from each other than those from the Ottawa River region. The population from Abitibi deviates considerably from the other populations, suggesting habitat-selection pressures acting at the margin of the natural range of the species under continental conditions. Finally, no general geographical trend was detected in the observed variation. Key words: white pine, morphology, cone, seed, variation.
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Doyon, Christian, Réjean Fortin, and Philip A. Spear. "Retinoic acid hydroxylation and teratogenesis in lake sturgeon (Acipenser fulvescens) from the St. Lawrence River and Abitibi region, Quebec." Canadian Journal of Fisheries and Aquatic Sciences 56, no. 8 (August 1, 1999): 1428–36. http://dx.doi.org/10.1139/f99-086.

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All-trans-retinoic acid (RA) is an extremely active form of vitamin A; however, excessive or insufficient concentrations elicit anomalies including those associated with limb and craniofacial development. Lake sturgeon (Acipenser fulvescens) from the St. Lawrence River and tributaries were estimated to have a 2.9% incidence of fin and craniofacial malformations. Among larvae raised in artificial streams, a greater incidence of fin malformations (6.3%; p < 0.001) occurred in St. Lawrence River sturgeon compared with larvae from the Abitibi region. To test the hypothesis that the differences in rate of malformations may be associated with metabolic imbalances of RA, cytochrome P-450 dependent conversion to 4-hydroxyretinoic acid (4-OH-RA) was investigated. Optimal assay conditions are described for in vitro 4-OH-RA production in liver microsomes. Enzyme activity tended to decrease with increasing age and gonadal development in fish collected from Abitibi, but no statistically significant effects of sex, age, length, or gonadal development were discerned. The rate of 4-OH-RA formation was 3.5-fold greater (p < 0.0001) in the St. Lawrence sturgeon while the concentrations of cytochrome P-450 inducing PCBs (expressed as dioxin toxic equivalents) were 20-fold greater in a composite liver sample of the St. Lawrence sturgeon. Liver retinoid concentrations were negatively correlated (p < 0.0001) with RA hydroxylation rate. These results are consistent with the possibility that cytochrome P-450 dependent RA metabolism increased by chemical contaminants is associated with developmental anomalies in the St. Lawrence sturgeon.
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Lawrence, Bruce B. "The Cosmopolitan Canopy of East Maritime Southeast Asia: Minority citizenship in the Phil-Indo Archipelago." Comparative Islamic Studies 7, no. 1-2 (September 20, 2012): 67–104. http://dx.doi.org/10.1558/cis.v7i1-2.67.

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In this article Lawrence examines the elusive yet decisive role of the public square. He explains that the “public square” is the crucial category for understanding the scale and scope of citizenship. Both Indonesia and the Philippines resemble other contemporary polities in so far as their subjects/citizens project public faith, or religion in the public square. Minorities, like their majority neighbors, are ‘pious patriots,’ but they are patriots first. Lawrence demonstrates that to understand minority citizenship, individual voices from both polities must be analyzed. In doing so, he questions whether they can be simply categorized as full-fledged citizens of nation-states. Key terms that define minority relations are IP (Indigenous People) for the Southern Philippines, and adat (native practices) for many of the newly autonomous regions within Indonesia. By examining both IP and adat, Lawrence underscores the benefits, but also reveals the shortcomings, of the public square as it functions throughout the Phil-Indo Archipelago. This study concludes with a projection of what future changes in the public square will augur, not only for the region but also for its neighbors.
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Bruins, Hendrik J., and Johannes van der Plicht. "Radiocarbon Dating the “Wilderness of Zin”." Radiocarbon 49, no. 2 (2007): 481–97. http://dx.doi.org/10.1017/s0033822200042417.

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An important archaeological survey was conducted by Leonard Woolley and T E Lawrence in 1914 on behalf of the Palestine Exploration Fund in the Negev and northeastern Sinai deserts—the “Wilderness of Zin.” The region of Ain Kadeis, associated by some scholars in the 19th century with biblical Kadesh-Barnea, received much attention in their survey and discussions. Concerning the vexed question of Kadesh-Barnea, Woolley and Lawrence gave their preference for the nearby Ain el Qudeirat Valley, and in particular the ancient tell. Their survey contributed significantly in the shaping of scholarly opinion on the matter, even until today. But modern surveys and excavations failed to identify any archaeological remnants of the 2nd millennium BCE in the above regions, thereby putting the above associations in question. The Middle Bronze Age II, Late Bronze Age, and Iron Age I that cover this millennium are considered missing in the area in archaeological terms. However, our research reveals that archaeological remains of the 2nd millennium BCE do exist in the region, as determined chronologically by radiocarbon dating. A geoarchaeological approach is required to investigate terraced fields in wadis, which contain a unique record of human activity in these desert regions.
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Gagnon, François, Jacques Ibarzabal, Jean-Pierre L. Savard, Marc Bélisle, and Pierre Vaillancourt. "Autumnal patterns of nocturnal passerine migration in the St. Lawrence estuary region, Quebec, Canada: a weather radar study." Canadian Journal of Zoology 89, no. 1 (January 2011): 31–46. http://dx.doi.org/10.1139/z10-092.

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We documented the pattern of nocturnal passerine migration on each side of the St. Lawrence estuary (Côte-Nord north and Gaspésie south), using the Doppler Canadian weather surveillance radar of Val d’Irène (XAM). We examined whether autumnal migrants flew across the St. Lawrence, resulting in a uniform broad-front migration, or avoided crossing it, resulting in a bird concentration along the north coast. We found that a proportion of migrants crossed the estuary but that most followed the north coast. Ranges at which birds were detected were, on average, greater on Côte-Nord, thereby rejecting the uniform broad-front migration hypothesis, inasmuch as reflectivity measurements suggested that bird concentrated along Côte-Nord. The mean flight direction on Côte-Nord was southwest but shifted westward as the night progressed, avoiding crossing the estuary by late night. In Gaspésie, the mean flight direction over land was south and no directional shift was observed throughout the night. Flight altitude reach up to 1000 m above sea level (a.s.l.), but migratory activity was highest in the first 500 m a.s.l. It appears that the St. Lawrence estuary acts as a leading line and a barrier for nocturnal passerine migrants, and likely shapes migration farther south in Canada and in the United States.
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Notfors, Emma. "Heteroglossic itineraries and silent spaces: the desert cartographies of Gertrude Bell and TE Lawrence." cultural geographies 25, no. 4 (July 18, 2018): 589–601. http://dx.doi.org/10.1177/1474474018785989.

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This article advocates for the central importance of examining cartography for the understanding of literary travel narratives, focussing on accounts of travel in the deserts of the Middle East written by Gertrude Bell and TE Lawrence, both explorers, archaeologists and authors who were implicated in British activities in the Middle East before, during and after the Arab Revolt, and who travelled through the region during the early 20th century. This article seeks to explore the connections between the authors’ textual depictions and the maps that they authored, using close readings of their travel narratives and their maps to arrive at a more profound understanding of how these processes of authorship resulted in the production and mediation of ‘Arabia’ as an imaginative geography. Drawing on archival research and a range of textual sources, the development of this literary geography is traced through the early research of TE Lawrence on crusader castles in Syria and Lebanon, Gertrude Bell’s descriptions of using maps in The Desert and the Sown, Lawrence’s account of collating a map of Sinai for the War Office and the relationship between local navigational knowledges with their cartographic activities.
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TAYLOR, CHRISTOPHER K. "Notes on Phalangiidae (Arachnida: Opiliones) of southern Africa with description of new species and comments on within-species variation." Zootaxa 4272, no. 2 (May 29, 2017): 236. http://dx.doi.org/10.11646/zootaxa.4272.2.5.

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Notes are provided on a collection of Afrotropical harvestmen (Opiliones: Palpatores: Phalangiidae) from the California Academy of Sciences. A new species of Rhampsinitus, R. conjunctidens n. sp., is described from Limpopo province of South Africa. Rhampsinitus flavobrunneus Staręga 2009 and R. silvaticus Lawrence 1931 are recognised as junior synonyms of R. nubicolus Lawrence 1963 and R. vittatus Lawrence 1931, respectively. Both R. conjunctidens and R. nubicolus are recognised as exhibiting strong male dimorphism with major males exhibiting larger body size and greatly enlarged chelicerae relative to minor males; minor males cannot be readily identified to species without examination of genitalia. A discussion is also provided on generic boundaries within Afrotropical Phalangiidae, and a generic key to males of the region is presented.
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Harding, Gareth, Ellen Kenchington, and Zhensui Zheng. "Morphometrics of American Lobster (Homarus americanus) Larvae in Relation to Stock Determinations in the Maritimes, Canada." Canadian Journal of Fisheries and Aquatic Sciences 50, no. 1 (January 1, 1993): 43–52. http://dx.doi.org/10.1139/f93-005.

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Morphological characteristics of the first larval stage of the American lobster (Homarus americanus) enabled the separation of the Maritime population with stepwise discriminant function analysis into three groups: the southern Gulf of St. Lawrence and its outflow around Cape Breton Island, the Atlantic inshore region of Nova Scotia, and the offshore banks bordering the Gulf of Maine. Once the effect of environmental temperature on larval size was removed, the differences between Georges and Browns banks and the Atlantic inshore disappeared. The remaining differences, chiefly in the dimensions of the second and fifth abdominal segments and the rostrum, between larvae from the Cape Breton sites and elsewhere may be due to other environmental factors or partial genetic isolation. Conservation and management practices over the past century have increased gene flow between regions, and most of this appears to be from the release of Gulf of St. Lawrence lobsters in the Gulf of Maine. A reassessment of previous studies on adult morphology, benthic movements, larval dispersal, enzyme electrophoresis, and commercial landing patterns supports the separation of the Gulf of St. Lawrence stock from the rest of the Canadian Maritimes.
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Elson, John A. "West-southwest glacial dispersal of pillow-lava boulders, Philipsburg–Sutton region, Eastern Townships, Quebec." Canadian Journal of Earth Sciences 24, no. 5 (May 1, 1987): 985–91. http://dx.doi.org/10.1139/e87-095.

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Pillow-lava boulders, probably from Place Mountain in the Bolton valley east of the Sutton Mountains, occur in a narrow belt or fan 43 km long trending west-southwest (azimuth about 248°) from 10 km southwest of Place Mountains to Rosenberg, near Philipsburg, Quebec. Glacial striations with this direction are uncommon; the general glacial movement indicated by abundant striations and indicator erratics is southeastward. A southwestward flow in the axial part of the St. Lawrence Lowlands near Montréal is apparently the youngest direction there, of late Wisconsinan age. In the Eastern Townships of Quebec east and northeast of the study area and in adjoining northern Vermont there is evidence of a southwestward flow of mid-Wisconsinan age. Local southwestward flow in the study area at the beginning and end of a glacial cycle may have resulted from a mobile bed in the flooded St. Lawrence – Champlain lowland, but a hypothesis of flow from a major mid-Wisconsinan axis of accumulation in the northern Appalachians farther to the east is supported by much published field evidence.
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Dissertations / Theses on the topic "Lawrence region"

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Nyamane, Lawrence Laudonn. "Multicultural diversity and OBE practices : a case study of the Harrismith region / Lawrence Laudonn Nyamane." Thesis, North-West University, 2011. http://hdl.handle.net/10394/10342.

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The crucial issue in the new democratic South Africa was to change the type of education system that was based on social discrimination to one which is non- discriminatory, unbiased and accessible to all South Africans. However, to teach in a multicultural society and being faced with the challenge of teaching multicultural diverse classes, within an OBE paradigm, demands special knowledge, skills and attributes of teachers. Therefore, this study intended to investigate teachers’ OBE practices in multicultural classrooms in order to determine the strengths and weaknesses that could be useful for the improvement of teaching and learning within multicultural contexts. The study was approached from a socio-reconstructivist point of view and focused specifically on schools in the Harrismith region. The purpose of this study was thus to explore and come to a better understanding of how teachers’ OBE practices accommodate multicultural diverse learners in the Harrismith region. In order to direct the study towards the intended purpose, a literature study was undertaken to define multicultural diversity and to conceptualize OBE practices in order to operationalize the concept within the context of the study. The empirical research was done by following a qualitative research design in the form of a case study. Semi-structured, individual interviews and observations were used as data collection instruments. Interviews were conducted with teachers teaching Grade 8 and 9 learners as well as learners from the same grades, of five purposefully selected schools in the Harrismith region. By using maximal variation sampling, ten teachers and ten learners from the selected schools eventually participated in the research. Observations were recorded by means of anecdotal notes which were used to verify and supplement data obtained through the interviews. According to the findings of the empirical research, it appears that the research participants’ understanding of multiculturalism lack substance. The findings also revealed that multiculturalism is mainly accommodated by implementing the following OBE practices: working together with others, showing respect, cultural sensitivity, acknowledgement of individual learner differences, and by creating positive classroom climates. It was also evident that teachers act as change agents by discrediting discrimination and prejudice. Teaching in multicultural classrooms also poses some challenges. These included language problems, acceptance of different cultural practices, racial differences and “inherent” segregation. Though the findings revealed that teachers’ OBE practices still need to be refined in order to successfully accommodate multicultural diversity, positive attitudes were reflected in terms of improving their competence with regard to teaching in a multicultural diverse environment.
MEd, Learning and Teaching, North-West University, Vaal Triangle Campus, 2012
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Tsoflias, Georgios Padelis. "Common cyclicites in seismicity and water level fluctuations at the Charlevoix seismic zone of the St. Lawrence River /." This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-10242009-020326/.

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Tsoflias, Georgios Padelis. "Common cyclicities in seismicity and water level fluctuations at the Charlevoix seismic zone of the St. Lawrence River." Thesis, Virginia Tech, 1991. http://hdl.handle.net/10919/45314.

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Intraplate seismicity has no widely accepted explanation for its origin. The Hydroseismicity hypothesis, developed by Costain and co-workers, suggests that natural increases in hydraulic head, caused by transient increases in water table elevation, can be transmitted to hypocentral depths (10-25 km) in a fractured, prestressed, near-failure crust, and along with long term hydrolitic weakening of rocks, contribute to the triggering of earthquakes. In this study, the temporal characteristics of seismicity and water level fluctuations at the Charlevoix seismic zone on the Saint Lawrence river are investigated to provide a test of the Hydroseismicity hypothesis. To characterize the temporal release of seismic energy, two measures of seismic activity are considered for the available 200-year record of seismicity: the strain factor (magnitude dependent), and the number of events per unit time (magnitude independent). Residual analysis, applied to the strain factor time series, indicates a cyclical variation of the seismicity with long term periods ranging from 65 to 70 years. Fourier spectral analysis, applied on both strain factor and number of events time series, indicates the presence of short term cyclicities of seismic energy release at 13 to 14 year periods, along with longer-term cyclicities of approximately 55 to 70 year periods. Fisher’s periodogram ordinate test, applied to the spectral analyses results to determine the significance of the largest periodogram ordinate with respect to the average, tested the 13.4-year periodogram ordinate of the number of events time series significant at the 10% level, whereas the 13.4-year periodogram ordinate of the strain factor time series failed to test statistically significant. Analysis of the residual water level 70 year-long time series indicates a cyclical process with quarter cycles of approximately 20 years, suggesting a complete cycle of 70 to possibly 80 years. Fourier spectral analysis of the water level data set indicates cyclicities with periods of 1, 23, 14, and 8 years. The Grenander-Rosenblatt method (Priestley, 1981), applied to the spectral analysis results, tests the statistical significance of the largest periodogram ordinates, and showed the 1, 23, 14, and 8-year periodogram ordinates to be significant at the 1% level. Cyclicities present in the water level and seismicity time series were investigated for temporal (time lag) relationships using Group Delay analysis, a procedure that tests for time relationships at selected bandwidths. The maximum value of the Group Delay function occurs at the 14 year period with a time lag of + 2.3 years, indicating that the water levels lead the seismicity time series. The crustal diffusivity values estimated from the Group Delay analysis of the 14 year center period, range between 0.3 m²/sec and 2.7 m²/sec for a depth interval from 7 to 20 km. Direct correlation between depth and crustal diffusivity is not justified with the data at hand; however, the range of estimated diffusivities is within the range of published values of diffusivities for the crust (0.1 to 100m²/sec). This study allows for a possible causal relationship between repetitive mechanical effects of pore pressure transients and seismicity in the Charlevoix seismic zone. The temporal behavior of the physical processes studied is in general agreement with the Hydroseismicity model.
Master of Science
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Harrison, Sarah. "Relationships Between Land Use and Mercury Contamination in Twelve Tributaries of the Lake St Francis Region of the St Lawrence River near Cornwall, Ontario." Thesis, University of Ottawa (Canada), 2010. http://hdl.handle.net/10393/28873.

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In the environment, oxidized mercury (Hg) can be converted to more toxic chemical species, such as methylmercury (MeHg), as a result of both abiotic and biotic reactions. Hg and MeHg are present in aquatic ecosystems that flow into the Lake St. Francis region of the St. Lawrence River, but their origin is still being debated. A study of mercury and methylmercury contamination in Lake St. Francis in cooperation with the Raisin Region Conservation Authority (RRCA) is ongoing, in collaboration with the Ontario Ministry of Agriculture, Food, and Rural Affairs (OMAFRA) and the Great Lakes Program. A recent report detailed the experimental results for one portion of the area of concern, the Raisin River. The goal of the present project is to update and expand upon the previous work in order to include other existing and new data for this river and several other watercourses feeding Lake St. Francis. Special attention was paid to the MeHg hotspots in an attempt to link methylation and subsequent mobilization to different types of land use and nutrient profiles compiled from new and existing data. It was predicted that water draining off wetlands would have higher MeHg concentrations than water from catchments with other land use profiles. Total and methylmercury were expected to be correlated to the concentrations of nitrogen compounds, sulfate, phosphorus, dissolved inorganic carbon (DIC), and especially dissolved organic carbon (DOC). However, wetlands could not be correlated to MeHg as predicted but the area of crop land was correlated positively with the percentage of THg present as MeHg. Forest and impermeable areas were associated with a decrease in mercury. There was no difference in mercury during wet years compared to dry years when compared on an annual basis, but a significant seasonal difference exists between the two categories. MeHg was positively correlated to DOC, NH3, and BOD. THg was positively correlated to BOD, TSS, Escherichia coli, and fecal coliforms. The percentage of THg present as MeHg (%MeHg) was positively correlated to phosphorus. There were also some statistically significant negative correlations. Forest and impermeable area were negatively correlated with the quantity of MeHg, and impermeable area was negatively correlated with %MeHg. Greater predictor strength and more numerous significant correlations are expected under more thorough sampling and more data.
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Rascle, Floriane. "Écritures dramatiques et romanesques des XXe et XXIe siècles à l’épreuve des arts non verbaux. Modèles et dispositifs." Thesis, Sorbonne Paris Cité, 2016. http://www.theses.fr/2016USPCA110.

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L’observation de la présence des arts non verbaux au cœur des œuvres de Marguerite Duras, Lawrence Durrell, Elfriede Jelinek et Péter Nádas nous invite à considérer la musicalité et l’iconicité des écritures dramatiques et romanesques contemporaines en termes de modèle mais aussi de dispositif. Des phénomènes de dialogue, d’hybridation, de polyphonie, de dialogisme, d’intermédialité, de ce que Jacques Rancière nomme « l’impurification » au cœur d’un « régime esthétique de l’art » révèlent les rêves, désirs et pulsions du verbal pour d’autres arts, mais aussi pour des représentations à l’artisticité discutable. La fabrique d’un corps organique, sexuel, érotique voire pornographique par les écritures contemporaines nous convie à envisager le métissage entre art et non-art en termes de dispositif performatif et à proposer une lecture queer des œuvres. À l’heure du postmodernisme, le recours des écritures au non-verbal se donne à lire à la fois comme la manifestation d’une crise du logos et de la représentation et comme l’enjeu d’une rénovation esthétique et politique de la littérature. Qu’ils modélisent le verbal ou fassent brutalement irruption et déchirure en son sein, les arts non verbaux concourent au renouvellement des formes littéraires, mais aussi à leur politicité et au renouveau de la fiction. Cette étude ambitionne donc d’explorer le carrefour esthético-politique que dessinent, entre le milieu du XXe siècle et ce début de XXIe siècle, les relations plurielles entre les arts verbaux et non verbaux dans l’art verbal par excellence, la littérature
The observation of the presence of non verbal arts within the works of Marguerite Duras, Lawrence Durrell, Elfriede Jelinek and Péter Nádas leads us to examine the musicality and the iconicity of contemporary dramatic and novelistic writings in terms of model, pattern and devices. Dialogue, hybridization, polyphony, dialogism, intermediality, and what Jacques Rancière calls “impurification” within the “Aesthetic Regime of Art”, display the dreams, desires and longings of verbal art for other arts, but also for representations whose artistic content is arguable. The fact that contemporary writings produce an organic, sexual, erotic, even pornographic body invites us to focus on the interactions between arts and non-arts with regard to their performative devices and to propose a queer reading of the works. In Postmodernism, the fact that writings draw on non verbal forms can be understood as the expression of the failure of Logos – both language and reason – and of representation. Moreover, what is also at stake is an aesthetic and political reform of literature. Whether they tend to impose new verbal models or break into them, non verbal arts contribute not only to reshape literary forms but also to emphasize their political substance and renew their fictional content. This dissertation aims to investigate the crossroads between aesthetics and politics that the various relationships between verbal and non-verbal arts display, from mid-20th century to the beginning of the 21st century, within Literature, the verbal art par excellence
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Jean, Sandrine. "Les représentations sociales de la ruralité et de l'urbanité québécoise : la méthode de la cartographie conceptuelle." Thèse, 2008. http://hdl.handle.net/1866/7320.

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Ellwood, Suzanne Margaret. "Paleoecological Reconstruction of the Holocene Fire Regime at Mud Lake, Eastern Ontario, near St. Lawrence Islands National Park." Thesis, 2010. http://hdl.handle.net/1974/5420.

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Wildfire is an ecological disturbance that plays an important role in ecosystem function and interacts with climate and vegetation, relationships that may be altered by ongoing climate change. Insights from paleoecology can provide context for environmental change, including the natural range of variability. Here, the Holocene fire history of a small watershed in eastern Ontario, Canada is reconstructed. A high-resolution macroscopic charcoal series was derived from the lacustrine sediment of Mud Lake, north of Gananoque, Ontario and within the Frontenac Arch. Analysis of the charcoal record estimates a mean fire-return-interval (FRI) of 175 yr/fire around Mud Lake during the Holocene, and similar mean FRIs during different time periods indicates that it has been a largely stationary fire regime. The analysis suggests that fire activity may have recently increased, but a lack of documentary fire records for the area leaves this uncertain. There is no indication that humans have significantly impacted the fire regime, though anthropogenic ignition could have played a role in the area’s recent fires. The fire regime around Mud Lake does not appear to have shifted in association with major changes in regional vegetation. Fire activity does correlate with some paleoclimate trends. The estimated fire frequency decreased around 7500 yr BP, when wetter summers became more common in eastern Canada, and a recent increase in fire frequency would parallel with more frequent incursions of dry and cool air masses into the region. During other parts of the record, however, the fire activity does not appear to reflect the major climate impacts. The fire history of Mud Lake is relevant to the ecological management of eastern Ontario’s St. Lawrence Islands National Park and its restoration of a rare, fire-dependent tree species, the pitch pine. Though predictions vary, this area’s climate may become more favorable to fire through an increase in temperature and a decrease in summer precipitation. By providing information about the natural variability of fire activity in eastern Ontario, this research can be applied towards setting appropriate management goals during future environmental change.
Thesis (Master, Environmental Studies) -- Queen's University, 2010-02-01 00:14:00.711
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Books on the topic "Lawrence region"

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Blue, Rose. Exploring the St. Lawrence River region. Chicago: Raintree, 2004.

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Roy, F. Weston inc. Black/St. Lawrence sub-state region water resources management strategy report. [Albany, N.Y.?: The Dept. of Environmental Conservation, 1987.

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Canada, Canada Environment. Adapting to climate change and variability in the Great Lakes-St. Lawrence Basin: Proceedings of a binational symposium May 13 -15, 1997 Toronto, Ontario, Canada. Ottawa: Environment Canada, 1998.

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Rasaputra, Jaliya Gajaba. A habitat model for moose in the Southern Great Lake-St. Lawrence forest region. Ottawa: National Library of Canada, 1994.

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D.H. Lawrence: A study on mutual and cross references and interferences. Bologna: CLUEB, 1995.

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Belland, René Jean. The disjunct bryophyte element of the Gulf of St. Lawrence region : glacial and postglacial dispersal and migrational histories. Ottawa: National Library of Canada, 1985.

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Canada. Lands Directorate. Quebec Region. Land use Monitoring Divsion. Wetlands of the St. Lawrence River region, 1950-1978: = Milieux humides le long du fleuve Saint-Laurent, 1950-1978. [Ottawa]: Environment Canada, 1985.

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Zarnovican, Richard. Effect of seed production and soil scarification on the natural regeneration of a second-growth fir stand in the Lower St. Lawrence region. Sainte-Foy, Québec: Laurentian Forestry Centre, 2003.

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Lanteigne, M. Status of the giant scallop (placopecten magellanicus) fishery in the su=outhern Gulf of St. Lawrence (Fisheries and Oceans, Gulf Region) - 1990 update. Moncton: Gulf Fisheries Centre, Department of Fisheries and Oceans, 1992.

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Naylor, Brian John. Validation of a habitat suitability index model for moose in the northern portion of the Great Lakes-St. Lawrence Forest Region of Ontario. North Bay, Ont: Central Ontario Forest Technology Development Unit, Ontario Ministry of Natural Resources, 1992.

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Book chapters on the topic "Lawrence region"

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Draper, R. P. "Region Today: Some Reflections on Geoffrey Hill, D. H. Lawrence and Regional Tone." In The Literature of Place, 1–14. London: Palgrave Macmillan UK, 1993. http://dx.doi.org/10.1007/978-1-349-11505-1_1.

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Featherstone, Simon. "A. J. Cook, D. H. Lawrence, and Revolutionary England: Discourses and Performances of Region and Nation in 1926." In Literature of an Independent England, 91–102. London: Palgrave Macmillan UK, 2013. http://dx.doi.org/10.1057/9781137035240_7.

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von Weizsäcker, Carl Christian, and Hagen M. Krämer. "Concluding Remarks on the Negative Natural Rate of Interest." In Saving and Investment in the Twenty-First Century, 225–45. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-75031-2_8.

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AbstractThe Great Divergence: The period of production T is not rising anymore. The “waiting period” Z is rising over time with the rising standard of living and rising life expectancy, and this is the case worldwide. In the interest of full employment, the public debt periodD has to compensate for this divergence: T = Z − D. Using an extrapolation procedure that we have developed and the available empirical data, we calculate total private wealth in the OECD plus China region. Net public debt already accounts for nearly half of private wealth today. COVID-19 increases the optimal steady-statepublic debt period. Both our theory and our empirical findings are increasingly confirmed by the work of other economists: for example, by Lawrence Summers’secular stagnation thesis and by the study of Jordà, Schularick and others on the secular evolution of private wealth.
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Gyakum, John R. "The Application of Fred Sanders’ Teaching to Current Research on Extreme Cold-Season Precipitation Events in the Saint Lawrence River Valley Region." In Synoptic—Dynamic Meteorology and Weather Analysis and Forecasting, 241–50. Boston, MA: American Meteorological Society, 2008. http://dx.doi.org/10.1007/978-0-933876-68-2_12.

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Côté, B., M. El-Sabh, and R. de la Durantaye. "Biological and Physical Characteristics of a Frontal Region Associated with the Arrival of Spring Freshwater Discharge in the Southwestern Gulf of St. Lawrence." In The Role of Freshwater Outflow in Coastal Marine Ecosystems, 261–69. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-70886-2_18.

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Hamblin, P. F., K. R. Lum, M. E. Comba, and K. L. E. Kaiser. "Observations of Suspended Sediment Flux over a Tidal Cycle in the Region of the Turbidity Maximum of the Upper St. Lawrence River Estuary." In Hydrodynamics and Sediment Dynamics of Tidal Inlets, 245–56. New York, NY: Springer New York, 1988. http://dx.doi.org/10.1007/978-1-4757-4057-8_13.

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Hamblin, P. F., K. R. Lum, M. E. Comba, and K. L. E. Kaiser. "Observations of suspended sediment flux over a tidal cycle in the region of the turbidity maximum of the upper St. Lawrence River estuary." In Hydrodynamics and Sediment Dynamics of Tidal Inlets, 245–56. Washington, D. C.: American Geophysical Union, 1988. http://dx.doi.org/10.1029/ln029p0245.

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Grebmeier, Jacqueline M., and Lee W. Cooper. "The Saint Lawrence Island Polynya: A 25-Year Evaluation of an Analogue for Climate Change in Polar Regions." In Aquatic Microbial Ecology and Biogeochemistry: A Dual Perspective, 171–83. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-30259-1_14.

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Chauvin, Luc, Ghismond Martineau, and Pierre LaSalle. "Deglaciation of the Lower St. Lawrence Region, Quebec." In Late Pleistocene History of Northeastern New England and Adjacent Quebec, 111–24. Geological Society of America, 1985. http://dx.doi.org/10.1130/spe197-p111.

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"3. The St. Lawrence Valley and Southern Great Lakes Region." In Canada's Rural Majority, 67–104. University of Toronto Press, 2016. http://dx.doi.org/10.3138/9781487510589-004.

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Conference papers on the topic "Lawrence region"

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Erhart, Jennifer C., Anne Mündermann, Seungbum Koo, Ben Merrick, Andrew Deagon, Nicholas J. Giori, and Thomas P. Andriacchi. "Regional Cartilage Thinning Occurs First in the Walking Weight Bearing Regions of the Femur in Medial Compartment Knee Osteoarthritis." In ASME 2008 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2008. http://dx.doi.org/10.1115/sbc2008-192015.

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Osteoarthritis (OA) of the knee affects an estimated 20–40% of individuals over the age of 65 [1], and is nearly 10 times more common in the medial compartment than the lateral compartment [2]. Plain radiography measurements using the Kellgren and Lawrence (KL) scale have been the gold standard for diagnosis of knee osteoarthritis [3]. However, for new treatment interventions for medial compartment knee OA such as load modifying footwear, it would be important to know if the disease-related cartilage loss in the medial compartment occurs initially and predominantly in regions that are weight bearing during walking. Because walking results in highest weight bearing occurring in the anterior and middle regions of the femoral condyle and the anterior region of the tibial plateau, seeing a pattern of thinning in these areas would suggest that walking is an important activity for understanding both the cause and treatment of osteoarthritis.
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Strakey, Peter A., and Gilles Eggenspieler. "Development and Validation of a Thickened Flame Modeling Approach for Large Eddy Simulation of Premixed Combustion." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-60077.

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The development of a dynamic Thickened Flame (TF) turbulence chemistry interaction model is presented based on a novel approach to determine the sub-filter flame wrinkling efficiency. The basic premise of the TF model is to artificially decrease the reaction rates and increase the species and thermal diffusivities by the same amount which thickens the flame to a scale that can be resolved on the LES grid while still recovering the laminar flame speed. The TF modeling approach adopted here uses local reaction rates and gradients of product species to thicken the flame to a scale large enough to be resolved by the LES grid. The thickening factor, which is a function of the local grid size and laminar flame thickness, is only applied in the flame region and is commonly referred to as dynamic thickening. Spatial filtering of the velocity field is used to determine the efficiency function by accounting for turbulent kinetic energy between the grid-scale and the thickened flame scale. The TF model was implemented into the commercial CFD code FLUENT. Validation of the approach is conducted by comparing model results to experimental data collected in a lab-scale burner. The burner is based on an enclosed, scaled-down version of the Low Swirl Injector (LSI) developed at Lawrence Berkeley National Laboratory. A perfectly premixed lean methane-air flame was studied as well as the cold-flow characteristics of the combustor. Planar Laser Induced Fluorescence (PLIF) of the hydroxyl molecule was collected for the combusting condition as well as velocity field data using Particle Image Velocimetry (PIV). Thermal imaging of the quartz liner surface temperature was also conducted to validate the thermal wall boundary conditions applied in the LES calculations.
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Schmidt, Roger, Madhusudan Iyengar, and Joe Caricari. "Data Center Housing the World’s 3rd Fastest Supercomputer: Above Floor Thermal Measurements Compared to CFD Analysis." In ASME 2007 InterPACK Conference collocated with the ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ipack2007-33507.

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With the ever increasing heat dissipated by IT equipment housed in data centers it is becoming more important to project the changes that can occur in the data center as the newer higher powered hardware is installed. The computational fluid dynamics (CFD) software that is available has improved over the years and some CFD software specific to data center thermal analysis has been developed. This has improved the timeliness of providing some quick analysis of the effects of new hardware into the data center. But it is critically important that this software provide a good report to the user of the effects of adding this new hardware. And it is the purpose of this paper to examine a large cluster installation and compare the CFD analysis with environmental measurements obtained from the same site. This paper shows measurements and CFD analysis of high powered racks as high as 27 kW clustered such that heat fluxes in some regions of the data center exceeded 700 Watts/ft2 (7535 W/m2). This paper describes the thermal profile of a high performance computing cluster located in an IBM data center and a comparison of that cluster modeled with CFD software. The high performance Advanced Simulation and Computing (ASC) cluster, developed and manufactured by IBM, is code named ASC Purple. It is the World’s 3rd fastest supercomputer [1], operating at a peak performance of 77.8 TFlop/s. ASC Purple, which employs IBM pSeries p575, Model 9118, contains more than 12,000 processors, 50 terabytes of memory, and 2 petabytes of globally accessible disk space. The cluster was first tested in the IBM development lab in Poughkeepsie, NY and then shipped to Lawrence Livermore National Labs in Livermore, California where it was installed to support our national security mission. Detailed measurements were taken in both data centers of electronic equipment power usage, perforated floor tile airflow, cable cutout airflow, computer room air conditioning (CRAC) airflow, and electronic equipment inlet air temperatures and were report in Schmidt [2], but only the IBM Poughkeepsie results will be reported here along with a comparison to CFD modeling results. In some areas of the Poughkeepsie data center there were regions that did exceed the equipment inlet air temperature specifications by a significant amount. These areas will be highlighted and reasons given on why these areas failed to meet the criteria. The modeling results by region showed trends that compared somewhat favorably but some rack thermal profiles deviated quite significantly from measurements.
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Wijesinghe, H. S., R. Hornung, A. L. Garcia, and N. G. Hadjiconstantinou. "3-Dimensional Hybrid Continuum-Atomistic Simulations for Multiscale Hydrodynamics." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-41251.

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We present an adaptive mesh and algorithmic refinement (AMAR) scheme for modeling multi-scale hydrodynamics. The AMAR approach extends standard conservative adaptive mesh refinement (AMR) algorithms by providing a robust flux-based method for coupling an atomistic fluid representation to a continuum model. The atomistic model is applied locally in regions where the continuum description is invalid or inaccurate, such as near strong flow gradients and at fluid interfaces, or when the continuum grid is refined to the molecular scale. The need for such “hybrid” methods arises from the fact that hydrodynamics modeled by continuum representations are often under-resolved or inaccurate while solutions generated using molecular resolution globally are not feasible. In the implementation described herein, Direct Simulation Monte Carlo (DSMC) provides an atomistic description of the flow and the compressible two-fluid Euler equations serve as our continuum-scale model. The AMR methodology provides local grid refinement while the algorithm refinement feature allows the transition to DSMC where needed. The continuum and atomistic representations are coupled by matching fluxes at the continuum-atomistic interfaces and by proper averaging and interpolation of data between scales. Our AMAR application code is implemented in C++ and is built upon the SAMRAI (Structured Adaptive Mesh Refinement Application Infrastructure) framework developed at Lawrence Livermore National Laboratory. SAMRAI provides the parallel adaptive gridding algorithm and enables the coupling between the continuum and atomistic methods.
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Schreiber, Will, and John Kuo. "A Computational Study of the Interaction of Melting Soil With Moisture Transport in the Native Soil." In ASME 1998 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/detc98/cie-6037.

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Abstract The current paper describes a computer model designed to analyze the moisture transport in the unmelted, porous soil neighboring a convecting melt. The time-dependent fluid and heat flow in the soil melt is simulated implicitly using the SIMPLE method generalized to predict viscous fluid motion and heat transfer on boundary-fitted, non-orthogonal coordinates which adapt with time. TOUGH2, a general-purpose computer code for multiphase fluid and heat flow developed by K. Pruess at Lawrence Berkekey Laboratory, has been modified for use on time-adaptive, boundary-fitted coordinates to predict heat transfer, moisture and air transport, and pressure distribution in the porous, unmelted soil. The soil melt model is coupled with the modified TOUGH2 model via an interface (moving boundary) whose shape is determined implicitly with the progression of time. The computer model’s utility is demonstrated in the present study with a special two-dimensional study. A soil initially at 20°C and partially-saturated with either a 0.2 or 0.5 relative liquid saturation is contained in a box two meters wide by ten meters high with impermeable bottom and sides. The upper surface of the soil is exposed to a 20°C atmosphere to which vapor and air can escape. Computation begins when the soil, which melts at 1700°C, is heated from one side (maintained at constant temperatures ranging from 1700°C to 4000°C). Heat from the hot wall causes the melt to circulate in such a way that the melt interface grows more rapidly at the top of the box than at the bottom. As the upper portion of the melt approaches the impermeable wall it creates a bottle neck for moisture release from the soil’s lower regions. The pressure history of the trapped moisture is examined as a means for predicting the potential for moisture penetration into the melt. The melt’s interface movement and moisture transport in the unmelted, porous soil are also examined.
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Reports on the topic "Lawrence region"

1

McCormack, R., and R. Therrien. St. Lawrence Lowlands region. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2014. http://dx.doi.org/10.4095/296948.

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Sanford, B. V. Geology and oil and gas possibilities of the Gulf of St. Lawrence region - southeastern Canada. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1998. http://dx.doi.org/10.4095/210109.

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Kao, H., S. J. Shan, J. F. Cassidy, and S. A. Dehler. Crustal structure in the Gulf of St. Lawrence region, eastern Canada: preliminary results from receiver function analysis. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2014. http://dx.doi.org/10.4095/293724.

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Wightman, W. G., A. C. Grant, and T. A. Rehill. Paleontological evidence for marine influence during deposition of the Westphalian Coal Measures in the Gulf of St. Lawrence-Sydney Basin region, Atlantic Canada. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1994. http://dx.doi.org/10.4095/193850.

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Rappol, M., and H. Russell. Glacial Dispersal of Precambrian Shield and Local Appalachian Rocks in the Lower St. Lawrence Region in western Gaspésie, Quebec, and in Adjacent New Brunswick. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1989. http://dx.doi.org/10.4095/126576.

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Taylor, S. R. Integrated verification experiment data collected as part of the Los Alamos National Laboratory`s Source Region program. Appendix F: Regional data from Lawrence Livermore National Laboratory and Sandia National Laboratory Seismic Networks. Office of Scientific and Technical Information (OSTI), June 1993. http://dx.doi.org/10.2172/10184282.

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Nastev, M., M. M. Savard, R. Lefebvre, R. Martel, N. Fagnan, E. Bourque, A. Hamel, G. Karanta, and J M Lemieux. Regional hydrogeological mapping project of the St. Lawrence Lowlands of southwestern Quebec: hydrogeological characterization work 1999-2000. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2001. http://dx.doi.org/10.4095/212155.

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Campbell, D. C. CCGS Matthew Expedition 2006-054: regional groundtruth survey of the St. Lawrence Estuary, October 15 - Nov 7, 2006. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2007. http://dx.doi.org/10.4095/224037.

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Ma, S., and M. Lamontagne. Earthquakes of the St. Lawrence Valley between Montreal and Québec: focal depth determination from Regional Depth Phases for the magnitude 2.8 and larger earthquakes for the time period 1980-2014. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2017. http://dx.doi.org/10.4095/304228.

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