The ca. 2720 Ma Vermilion, Shebandowan, Winston Lake, and Manitouwadge greenstone belts (VGB, SGB, WGB, and MGB, respectively) are located along the northern margin of the Wawa subprovince. They are interpreted to have formed in broadly similar rifted arc to back-arc environments, but their base and precious endowment and, in particular, their endowment in VMS deposits, differ markedly. These difference is metal endowment reflect differences in their metallogenic history that were examined by comparing their regional, belt-scale lithostratigraphy, chemostratigraphy, petrogenesis and tectonic history constrained by new U-Pb zircon geochronology. The MGB is the most VMS-endowed and isotopically juvenile (Pb and Nd) greenstone belt. It has a trace element chemostratigraphy that is consistent with a rifted arc to back-arc environment. The trace element chemostratigraphy of the WGB is also consistent with a rifted-arc to back arc geodynamic setting. The Winston Lake VMS deposits formed during early rifting of the arc and their timing is tightly constrained at ca. 2720 Ma by U-Pb ages of the host felsic strata and post-VMS Zenith gabbro. The Zn-dominated VMS mineralization formed from hydrothermal fluids that were <300 ° and were possibly boiling in relatively shallow water. The trace element chemostratigraphy of the VGB, SGB, and WGB indicates a plume-driven rifted arc to back-arc geodynamic settings. The composition of VMS mineralization, lithofacies, and alteration in these belts are consistent with a relatively shallower-water environment, which may have compromised VMS formation. The high-Mg andesites that are typical of, but restricted to, the SGB formed during compressional “hot” subduction, which resulted in the development of a thicker arc crust. This thicker crust may have inhibited VMS formation, but favoured the formation of magmatic sulphide and gold mineralization. New detrital and magmatic zircon U-Pb geochronology allowed comparison and correlation of lithostratigraphy and metallogeny between the greenstone belts. U-Pb ages within the VGB also defined younger, Timiskaming-type volcanic and sedimentary strata that are coeval with similar deposits in the SGB. These strata are spatially and temporally associated with gold mineralization in both belts and are coeval with similar deformation and magmatic events in the WGB and along the northern margin of the Wawa-Abitibi terrane. This indicates that the formation of Timiskaming-type pull apart basins in the northern part of the Wawa-Abitibi terrane were synchronous, and earlier than in the southern part, which is consistent with oblique convergence of the Wawa-Abitibi terrane onto the Superior Province. Detrital zircon geochronology also revealed the presence of a >2720 Ma iv zircon population within the Timiskaming-type sedimentary strata of the SGB. This is consistent with their derivation from the Wabigoon subprovince and suggests trans-terrane transport of detritus in a foreland –type basin resulting from uplift of the Wabigoon subprovince during accretion of the Wawa subprovince.

In response to sulphur dioxide emission reductions in North America and Europe, there has been a recent shift in research focus towards understanding ecosystem recovery. Evidence for reversibility in the effects of acidification on lake ecosystems within North America has been, for the most part, constrained to a single locality (Sudbury, Ontario). Lakes in a fume-kill area near Wawa, Ontario, present a new and rare opportunity for studying potentially rapid chemical and biological recovery patterns from extreme acidification. Several lakes acidified (pH ~3) during a period of local iron sintering from 1939 to 1998, and although minimal historical data are available, striking biological recovery has recently been observed. This study used paleolimnological techniques to track diatom (class Bacillariophyceae) responses to historical water quality changes in five fume-kill lakes near Wawa. Prior to the onset of iron sintering, the sediment-recorded diatom assemblages were dominated by species that are typically found in circumneutral or slightly alkaline lakes. Following the known occurrence of lake acidification, there was a striking shift in the sediment record towards dominance by acid- and metal-tolerant species. Water quality of the fume-kill lakes has since improved (i.e. pH has increased from ~3 to ~7 and metal concentrations have decreased). In four of the five lake cores, this was reflected by a decrease in the relative abundance of acid-tolerant species. Surprisingly, diatom communities were not progressing towards pre-disturbance species assemblages. Factors impeding the return of native species might include metal enrichment in surface sediment and potentially altered lake thermal regimes. Documenting and understanding recovery trajectories is necessary to help lake managers evaluate policy decisions regarding the efficacy of emission reduction programs and mitigation measures. This thesis provides evidence from one location in addition to Sudbury that the ecological effects of severe lake acidification can be reversed if SO2 emissions are sufficiently reduced. It also further demonstrates the complexity of recovery patterns in acidified and metal-contaminated lakes. / Thesis (Master, Biology) -- Queen's University, 2009-04-26 18:38:20.58

Doctorat en sciences sociales, politiques et économiques / info:eu-repo/semantics/nonPublished

La presente investigación cualitativa con abordaje metodológico de acción, tuvo como objetivos diseñar una propuesta para la gestión de enfermería en las políticas públicas del programa social wawa wasi. La teoría se basó en el modelo de promoción de salud de Nola J. Pender. Los sujetos de estudio fueron 10 profesionales de enfermería con experiencia en salud pública y comunitaria que laboran en el distrito de Chiclayo. Para recolectar la información se utilizó la entrevista semi-estructurada y la técnica de grupos focales. Se respetaron los criterios éticos de Sgreccia y los de rigor científico. Se realizó un análisis temático obteniendo las siguientes categorías; al inicio: se identificó problemas u obstáculos limitantes, y se reconoció la escasa gestión de la enfermera en las políticas públicas; después, se sintieron competentes para participar en el proceso de formulación de una propuesta en las políticas públicas del programa social wawa wasi. Las conclusiones fueron que los profesionales de enfermería con experiencia en salud pública y comunitaria realizan escasa gestión en las políticas públicas, enmarcadas en actividades esporádicas tales como las actividades extramurales del establecimiento de salud (CRED, vacunas, etc.).

This dissertation presents the first full grammatical description of unprompted (spontaneous) speech in pidgin Chinook Jargon [synonyms Chinúk Wawa, Chinook]. The data come from a dialect I term ‘Kamloops Chinúk Wawa’, used in southern interior British Columbia circa 1900. I also present the first historical study and structural analysis of the shorthand-based ‘Chinuk pipa’ alphabet in which Kamloops Chinúk Wawa was written, primarily by Salish people. This study is made possible by the discovery of several hundred such texts, which I have transliterated and analyzed. The Basic Linguistic Theory-inspired (cf. Dixon 2010a,b) framework used here interprets Kamloops Chinúk Wawa as surprisingly ramified in morphological and syntactic structure, a finding in line with recent studies reexamining the status of pidgins by Bakker (e.g. 2003a,b, forthcoming) among others. Among the major findings: an unusually successful pidgin literacy including a widely circulated newspaper Kamloops Wawa, and language planning by the missionary J.M.R. Le Jeune, O.M.I. He planned both for the use of Kamloops Chinúk Wawa and this alphabet, and for their replacement by English. Additional sociolinguistic factors determining how Chinuk pipa was written included Salish preferences for learning to write by whole-word units (rather than letter by letter), and toward informal intra-community teaching of this first group literacy. In addition to compounding and conversion of lexical roots, Kamloops Chinúk Wawa morphology exploited three types of preposed grammatical morphemes—affixes, clitics, and particles. Virtually all are homonymous with and grammaticalized from demonstrably lexical morphs. Newly identified categories include ‘out-of-control’ transitivity marking and discourse markers including ‘admirative’ and ‘inferred’. Contrary to previous claims about Chinook Jargon (cf. Vrzic 1999), no overt passive voice exists in Kamloops Chinúk Wawa (nor probably in pan-Chinook Jargon), but a previously unknown ‘passivization strategy’ of implied agent demotion is brought to light. A realis-irrealis modality distinction is reflected at several scopal levels: phrase, clause and sentence. Functional differences are observed between irrealis clauses before and after main clauses. Polar questions are restricted to subordinate clauses, while alternative questions are formed by simple juxtaposition of irrealis clauses. Main-clause interrogatives are limited to content-question forms, optionally with irrealis marking. Positive imperatives are normally signaled by a mood particle on a realis clause, negative ones by a negative particle. Aspect is marked in a three-part ingressive-imperfective-completive system, with a marginal fourth ‘conative’. One negative operator has characteristically clausal, and another phrasal, scope. One copula is newly attested. Degree marking is largely confined to ‘predicative’ adjectives (copula complements). Several novel features of pronoun usage possibly reflect Salish L1 grammatical habits: a consistent animacy distinction occurs in third-person pronouns, where pan-Chinook Jargon 'iaka' (animate singular) and 'klaska' (animate plural) contrast with a null inanimate object/patient; this null and 'iaka' are non-specified for number; in intransitives, double exponence (repetition) of pronominal subjects is common; and pan-Chinook Jargon 'klaksta' (originally ‘who?’) and 'klaska' (originally ‘they’) vary freely with each other. Certain etymologically content-question forms are used also as determiners. Kamloops Chinúk Wawa’s numeral system is unusually regular and small for a pidgin; numerals are also used ordinally in a distinctly Chinook Jargon type of personal name. There is a null allomorph of the preposition 'kopa'. This preposition has additionally a realis complementizer function (with nominalized predicates) distinct from irrealis 'pus' (with verbal ones). Conjunction 'pi' also has a function in a syntactic focus-increasing and -reducing system. / Graduate

Throughout the world, languages are becoming extinct at an alarming rate. Perhaps half of the 6,000-7,000 languages worldwide will go extinct in the next 50-100 years. One of these dying languages, Chinook Jargon or Chinuk Wawa, a language found in the Pacific Northwest of the United States, is in the process of being revitalized through the concerted efforts of the Confederated Tribes of Grand Ronde (CTGR). Reasons to revitalize endangered languages often seem irrelevant to our modern daily lives, and revitalizing these languages is a difficult process requiring much dedication, commitment, and persistence. In light of this significant struggle, understanding people's motivations could contribute to a better understanding of how to involve more people in language revitalization. Ideally, such an understanding would contribute to strengthening a community's efforts to revitalize their language. This exploratory, ethnographic case study explores the motivations of eight participants in the Portland Chinuk Wawa language community involved in revitalizing Chinuk Wawa over a nine-month period in 2011. The results of the study showed that seven major themes of motivation were prevalent for the participants: connections made through Chinuk Wawa, preservation of Chinuk Wawa, relationships, instrumental motivation, affective motivation, identity motivation, and demotivation.