Thesis (Ph. D.)--West Virginia University, 2000. / Title from document title page. Document formatted into pages; contains viii, 128 p. : ill. (some col.) Vita. Includes abstract. Includes bibliographical references (p. 108-115).

Forskning visar att intresset för NO som skolämne är lågt bland högstadieelever, vilket är oroande dels på grund av att intresse är ett av målen i den svenska läroplanen, dels på grund av det förutspås en brist på naturvetare i framtiden. Att kartlägga elevers intressen kan därför vara ett verktyg för att bättre förstå varför intresset för NO i skolan är lågt. Syftet med denna rapport är därför att undersöka intressen hos elever i årskurs 9 i Sverige och sedan jämföra resultatet med det som ingår i läroplanen. Detta gjordes med ROSES-studien som skickades ut till elever i årskurs 9 över hela Sverige. Enkäten omfattade ämnesområden inom NO-ämnen och svaren på frågor angående ämnesområdena med koppling till biologi ligger till grundför denna studie. De punkter som berörde specifikt biologi plockades ut och svaren analyserades utifrån hur väl representerade dessa var i det centrala innehållet  i kursplanen. Färre än hälften av de svarande eleverna ansåg NO-ämnena vara intressanta, och få punkter angavs vara särskilt intressanta men vissa av de som var mer intressanta är ändå väl representerade i det centrala innehållet. Resultatet diskuteras i relationen till intresse, lärande och motivation, ämnesdidaktiska implikationer och förslag på vidare forskning diskuteras. Slutsatsen i arbetet är att NO-ämnena är måttligt intressanta och att en del av vad som intresserar elever specifikt inom biologi är ändå representerat i det centrala innehållet.

Roses are said to vary in performance in different sections of the country. To determine the degree (if any) of variance, a survey was conducted obtaining ratings of a selected grouping of roses grown in all sections of the United States. This survey was conducted among members of the American Rose Society and other selected gardeners, who evaluated their roses in terms of performance in their own gardens. More than 5,000 rosarians participated, each reporting on an average of 25 roses. Some 450 roses introduced into commerce from 1962 through 1967 were included in the study. For the purpose of the study the United States was divided into three major geographic regions. This report furnished a numerical rating based on a 10 point scale of all the newer roses now being grown in each region. The study listed with comments the higher rated roses in each horticultural class. Tables were used to present the cultivars from each region according to rank. The study showed that the performance of most roses varies from one area to another. It was revealed, however, that basically the same roses proved to be the highest rated, and showed the best results in each of the three regions under study. The report is especially valuable to amateur gardeners who wish to determine the value of specific cultivars for their own locale. / M.S.

Vingt-quatre combinaisons de croisements ont été réalisées entre huit cultivars de rosier en vue d'obtenir des informations sur leur potentiel d'hybridation. Toutes les combinaisons ayant le rosier 'AC Marie-Victorin' comme parent mâle ont produit des cynorhodons. Ce cultivar possède un bon potentiel pour effectuer des tests de fertilité mâle ou femelle avec les cultivars dont le potentiel est inconnu. Trois combinaisons effectuées avec ce cultivar ont produit une quantité appréciable de nouveaux plants aux fleurs de couleurs rares (principalement le jaune), soit 'AC Marie-Victorin' x 'Midas Touch', 'Sunflare' x 'AC Marie-Victorin' et 'Yellow Simplicity' x 'AC Marie-Victorin'. Même si leurs descendants sont peu nombreux, les rosiers 'Morden Sunrise' et 'Melody Parfumée' doivent être retenus, le premier permettant d'obtenir des teintes rares et des dégradées de couleurs et le second, des teintes de mauve et des fleurs parfumées. En revanche, les descendants des combinaisons de croisements des rosiers 'Golden Shower' et 'Graham Thomas' n'ont suscité aucun intérêt. Aucun descendant à fleur rouge n'a été obtenu^ De plus, la composition pigmentaire des pétales de roses de six parents et d'un certain nombre de descendants a été étudiée à l'aide de la spectrophotométrie d'absorbance.

Les extraits naturels tels que les huiles essentielles, les absolues ou les résinoïdes utilisés en parfumerie, arômes et cosmétique sont produits à partir de matières premières naturelles. La culture de ces matières premières est souvent basée sur la monoculture et implique l'utilisation de pesticides. La réglementation pour les matières premières destinées à ces industries devient de plus en plus stricte en termes de niveaux résiduels autorisés de pesticides, en raison de leur impact sur la santé publique et sur l'environnement. Dans ce manuscrit, un état de l’art montrant la problématique pour l’analyse des pesticides dans les extraits naturels et les travaux dédiés à cette étude, est présenté. Une méthode d’analyse multi-résidus de pesticides a ensuite été mise au point dans les roses et les extraits (concrètes et absolues) issus de la rose. La préparation d’échantillon s’appuie sur l’approche QuEChERS utilisant l’extraction et la purification par SPE-dispersive. Les échantillons ont ensuite été analysés par GC-MS/MS. Les méthodes ainsi développées ont permis d’étudier les devenir des pesticides au cours du procédé d’extraction des roses. Le travail a été fait dans un premier temps sur des roses issues d’un champ bio puis dopées avec 57 pesticides. Chaque intermédiaire de transformation, excepté les cires, a été analysé mettant en évidence la répartition des pesticides. Il y est montré que les pesticides présents dans les roses sont co-extraits durant le procédé d’extraction et sont concentrés entre 100 et 300 fois dans l’absolue. Cette étude a ensuite été réalisée sur des roses et leurs extraits issus de champs avec des traitements phytosanitaires « classiques ». / Natural extracts in form of essential oils, concretes, resinoids, as well as absolutes used in perfume, aroma, and cosmetic industries are produced from natural raw materials. The cultivation of natural raw materials is often based on monoculture and involves the use of pesticides. Legal regulations for raw materials intended for these industries become increasingly stricter in terms of the allowed residual levels of chemicals used for treatment because of their impact on public health and on the environment. In this manuscript, a review showing pesticide analysis problems in natural extracts and works dedicated to this study, is presented. Next, a method for multi-residue pesticides analysis was developed in roses and extracts (concrete and absolute) from roses. The sample preparation is based on the QuEChERS approach using extraction and purification by SPE-dispersive. The samples were then analyzed by GC-MS / MS. Thus the developed methods were used to study pesticides behavior during the extraction process of the roses. In a first time, the work was done on roses from organic field and spiked with 57 pesticides. Each transformation intermediate, except waxes, was analyzed showing the distribution of pesticides. It showed that pesticides which were present in rose flowers were coextracted during extraction process and concentrated by factor between 100 and 300 in absolute. This study was then performed on roses and extracts from fields with pesticide "classic" phytosanitary treatments. The trend observed for these samples was the same as for the model: pesticides were concentrated in the absolute reaching concentrations of several milligrams per kilogram.

In this thesis, a collective urban sector-consisting, in various different guises, of civic governments, urban merchants, and townspeople-is presented as a vital and distinctive component of later medieval English political society. The dynamics of this urban political sector are reconstructed through the use of a modified version of the 'urban systems' approach found in historical geography and economic history, positing that towns are defined by their evolving relationship with one another. Drawing from the municipal records of twenty-two towns, this thesis charts the composition of the later medieval English 'urban system' and the manner in which urban groups belonging to this 'system' participated in a broader national political sphere over four chronological periods-1413-35, 1435-50, 1450-61, and 1461-71. In 1413-35, the highly authoritative and institutionalised governments of Henry V and the child Henry VI fostered vertical relationships between the Crown and a variety of individual civic governments, leading both national and urban political actors to operate within a shared political culture, but not necessarily encouraging inter-urban political communication. This would change in the periods that followed, as the absence of strong royal authority after 1435 renewed the strength of lateral mercantile networks and facilitated the re-emergence of a semi-autonomous inter-urban political community, which saw little reason to participate in the civil wars of the early 1450s that now seemed divorced from its own interests. In the 1460s, however, the financially extractive policies of Edward IV once again gave civic governments and ordinary townspeople a greater stake in royal government, which was reflected in the high level of urban participation in the dynastic conflicts of 1469-71. The developments occurring in these four phases illustrate both the interdependence of urban and national politics in the later medieval period, and the mutability of their relationship with one another.

Mémoire numérisé par la Division de la gestion de documents et des archives de l'Université de Montréal.

A wind-wave model for Lake Pontchartrain has been developed. This model uses the probability data obtained from the frequency analysis of wind information from the four weather monitoring stations in Lake Pontchartrain. For any given season and any given location, this model generates statistical results of wave heights, wave periods and long-shore sediment transport in 10 degree directional bins along the shoreline of the Lake. This model can be used as an effective tool for planning, construction and maintenance of beaches along the shores of Lake Pontchartrain.

Bibliography: leaves 221-240. This thesis deals with the introduction of "Aphidius rosae" as a classical biological control agent into South-Eastern Australia. Appropriate host specificity tests are carried out. Laboratory experiments are also completed to gain a better understanding of the interactions between host and parasitoid in the field. The study aims to monitor the performance of the control agent in the Adelaide environment for the first two years after initial release. It is also planned to invent an experimental field technique to estimate the impact of the control agent on rose aphid populations.

In this article we ask if central values which people were in dialogue with in the memorial messages from Oslo Cathedral Square in the aftermath of July 22 nd 2011, may be seen as a part of Norwegian cultural memory, and if so, how. We answer this question in the affirmative, by elaborating on presentations of the Norwegian flag as a symbol of the values unity and solidarity, and on presentations of love and roses as weapons promoting the values love, humanity and calmness. In our discussion we have drawn on theory of cultural memory and suggested that the use of the Norwegian flag in the messages may be understood in the frame of Assmann’s term "canon", representing the active part of cultural remembrance, and that the message from the use of roses and hearts may be understood in the frame of the term "archive", representing the passive part of remembrance.