This thesis examines the role of rock avalanches in tectonically active terrains including the effects of the deposits on glacier behaviour and their contribution to moraine formation. The chronologies of mountain glacier fluctuations, based on moraine ages, are widely used to infer regional climate change and are often correlated globally. In actively uplifting mountain ranges rock avalanches that travel onto the ablation zone of a glacier can reduce ice-surface melting by insulating the ice. This can cause buried ice to thicken due to slower ablation and can significantly alter the overall glacier mass balance. This glacier response to supraglacial rock avalanche deposits can confound apparent climatic signals extracted from moraine chronologies. This thesis investigates the processes through which rock avalanche deposits may affect glaciers and develops a new technique to identify the presence of rock avalanche debris in glacial moraines. From laboratory experiments on the effects of debris on ice ablation it is demonstrated that the rate of underlying ice ablation is controlled by diurnal cyclicity and is amplified at high altitude and in lower latitudes. The relatively low permeability of rock avalanche sediment in comparison with non-rock avalanche supraglacial debris cover contributes to the suppression of ablation, at least partly because it greatly reduces the advection of heat from rain water to the underlying ice. The laboratory findings are supplemented by field investigations of two recent rock avalanche deposits on glaciers in the Southern Alps of New Zealand. This work demonstrates that the rock avalanche deposits are very thick (10 m at Aoraki/Mt. Cook and 7m at Mt. Beatrice) and almost stopped the ablation of the overlying ice. This resulted in the formation of an ice-platform more than 30 m high. This led to a reduction of the existing negative mass balance of the affected Tasman and Hooker Glaciers. There was little noticeable alteration of the overall glacial regime due to the small scale of the debris covered area (4 and 1% of the ablation zones for the Tasman and Hooker Glaciers, respectively) but there is a significant contribution to supraglacial debris, which is passively transported toward the terminus. A conceptual model of the response of mountain valley glaciers to emplacement of extensive rock avalanche debris on the ablation zone has been proposed for the effect of this type of debris on terminal moraine formation based on enhanced ‘dumping’ of supraglacial sediments. A new technique has been developed to distinguish rock-avalanche-derived sediment from sediment of glacial origin, based on the sedimentary characteristics of the finest fraction. Examination of rock avalanche sediment under the Scanning Electron Microscope showed that finer particles tend to form strong clumps, which comprise many smaller (down to nanometre-scale) clasts, named here ‘agglomerates’. These agglomerates are present in the fine fraction of all examined rock avalanche deposits and absent in known non-rock-avalanche-derived glacial sediments. The agglomerates are characteristics of sediment produced under the high-stress conditions of rock avalanche emplacement and contrast with lower-stress process sub- and en-glacial environments. It is demonstrated that these agglomerates are present in some moraines in the Southern Alps of New Zealand that have been attributed to climate fluctuation. Consequently, this technique has the potential to resolve long-standing arguments about the role of rock avalanches in moraine formation, and to enhance the use of moraines in palaeoclimatological studies.

Uppsatsens syfte är att undersöka hur de ansvariga för jämställdhetsarbetet på Folksam arbetar med jämställdhet. Syftet är även att undersöka vilka normer och kulturer som kan påverka deras jämställdhetsarbete. Detta undersöks genom fyra stycken semistrukturerade intervjuer med två stycken som arbetar internt, med att få just Folksam mer jämställt, och två stycken på Folksam som arbetar externt, med att få andra företag både i Sverige och utomlands att bli mer jämställda. Slutsatsen är att respondenterna på Folksam blir påverkade av normer från till exempel politiken, för att politiken kräver att de ska vara jämställda, men också för att deras kunder vill det. Det är även en lönsamhetsfråga samt en mänsklig rättighet och därför vill de ändra den rådande normen. Detta försöker de göra internt bland annat genom en kompetensbaserad rekrytering, en mångfaldsplan och genom att lita på att alla försöker arbeta med det inom sitt eget företag. Samt genom att försöka påverka andra företag med extern bolagsstyrning. Detta kan också vara svårt att göra enligt genus- och den institutionella teorin, då det finns rådande institutionella normer i samhället som verkar emot. Normerna kan även visa sig i den svenska kulturen som kan förklaras genom Hofstedes kulturdimensionsteori. / The purpose of this study is to examine how those responsible for gender equality at Folksam work with gender equality. It also aims to examine the norms and cultures that can affect their work on gender equality. This is examined by four semi structured interviews with two people who are working internally to get Folksam more equal and with two people that are working externally at Folksam to get other companies, both in Sweden and abroad, to become more equal. The conclusion is that norms from for example politics affect the respondents at Folksam, since the politics requires them to be equal, but also because their customers want it. It is also a profitability question as well as a human right and therefore they want to change the current norm. They are trying to do that internally through, for instance, a competency-based recruitment, a diversity plan and by trusting that everyone is trying to work with it within Folksam. And by trying to influence other corporations through external corporate governance. This may also be difficult to do according to gender- and the new institutionalism theory, because of the existing institutional norms in society that is working against it. Norms can also be shown in the Swedish culture, which can be explained with the Hofstede's Cultural Dimensions Theory.

Aim: The aim of this comprehensive thesis is to explore different perceptions of public health nursing practice. The intention being to contribute to developing the service, theoretically and practically, in throe with current and future public health needs. Methods: The thesis comprises five studies. Public health nurses, young people, parents and decision makers are interviewed and share their perceptions of public health nursing practice (studies I, II, III and IV). Consultations at local child health clinics, clinics for young people and at school health services are observed (study III). A cross sectional study amongst a sample of doctors, public health nurses, midwives and child protection workers is carried out (study V). The first four studies have an explorative, descriptive design. Study V, with its focus on interprofessional collaboration, is based on the results of studies I, II, and IV. Findings: Study I, a case study, provides a backdrop for the remaining four studies. It focuses on changes the nurses have faced during the period 1984-2005. The results point to issues of visibility and that respect is more important for the nurses than authority or status. Study II is a philosophical study based on interviews with public health nurses. It gives an introduction to the philosophy of Emmanuel Levinas and develops a novel theoretical and practical understanding of aspects of responsibility in public health nursing. Study III shows the importance of relationships with service users in public health nursing practice; and that not only pleasantness but also honesty and openness are important. This study has contributed to further developing models of public health nursing interventions. Decision makers in study IV point to the challenges public health nurses face regarding collaboration, visibility and boundaries. Study V is a cross sectional questionnaire study that focuses on interprofessional collaboration. The results show that size of municipality can influence frequency of meeting points and views on issues relating to collaboration; and that mental health services are those most missed in collaborative relationships. The findings warrant further research and should be of interest when organising municipal health- and social services in Norway. Conclusions: The thesis concludes that service users and decision makers are satisfied with public health nursing services, but that public health nurses face challenges related to collaboration, to boundaries for knowledge and involvement, and in making their health promotive function visible / Denne doktorgradsavhandling: Perceptions of public health nursing practice - on borders and boundaries, visibility and voice, fokuserer på ulike oppfatninger av helsesøsters praksis. Helsesøstre, ungdom, foreldre, samt lokale politikere og administratorer er intervjuet om deres syn på helsesøstertjenesten. Konsultasjoner på helsestasjon for barn, ungdom og i skolehelsetjenesten er observert. Et utvalg av samarbeidspartnere har svart på et spørreskjema om samarbeidsforhold. Avhandlingen består av fem studier. De første fire studier har eksplorativ, deskriptiv design. Studie V er en tverrsnittsstudie som bygger på resultatene fra studiene I,II, og IV. Avhandlingen har til hensikt å løfte frem områder som respondentene mener fortjener oppmerksomhet og som kan ha praktiske og teoretiske implikasjoner for utvikling av tjenesten. Studie I, en case studie danner et bakteppe for de andre studiene. Den fokuserer på endringer i helsesøstertjenesten i perioden 1984-2005. Resultatene fra denne studien peker på helsesøstrenes opplevelse av usynlighet og at respekt er mer viktig for helsesøstrene i studien enn autoritet og status. Studie II er en filosofisk studie basert på intervjuer med helsesøstre. Den gir en introduksjon til Levinas’ filosofi og utvikler en dypere forståelse for teoretiske og praktiske aspekter av etisk ansvar i helsesøsters praksis. Studie III peker på betydningen av relasjoner i helsesøsters praksis. Det var viktig at konsultasjonene var hyggelige for helsesøstrene og brukerne, men ærlighet og åpenhet var også vesentlig for gode relasjoner. Beslutningstakere i studie IV peker på utfordringer helsesøstre har når det gjelder samarbeid, usynlighet, samt grenser for deres kunnskap og involvering. Studie V er en spørreskjemaundersøkelse som fokuserer på samarbeid. Resultatene viser at kommunestørrelse har betydning for hyppighet av møtepunkter og syn på samarbeid og at psykiske helsetjenester er savnet mest i samarbeidsrelasjoner. Disse funn burde være av interesse i fremtidig organisering av helse- og sosialtjenester. Avhandlingen konkluderer med at foreldre, ungdom og beslutningstakere er fornøyde med helsesøstertjenesten, men at helsesøstre står overfor viktige utfordringer i samarbeidsrelasjoner, i forhold til grenser for involvering og i å synliggjøre deres helsefremmende funksjon

Bumble bees (Bombus spp.: Apidae) are valuable pollinators of many crop and wildflower species. However, in some situations their potential is limited. Evaluation of, and management to improve bumble bee efficacy should include spatial information which is currently limited. Distance and direction determine the success of gene flow via pollen cross-over within and between plant populations at several scales. Studies of movement by bumble bees at large scales in semi-natural and intensively managed habitats are scarce. Few studies of bumble bee dispersal from the nest exist, particularly in relation to crops. At a small scale, directional rather than random movement between flowers has benefits for pollen flow. Results to date of directionality studies at small scales and their interpretation are inconsistent. The purpose of this thesis was to assess distances and directions moved by foraging bumble bees at a range of scales in two contrasting farm habitats in order to predict their pollination potential. A novel method was developed to mark automatically all the occupants of nests of bumble bees B. terrestris (L.) placed around a Lucerne seed crop Medicago sativa L. in New Zealand. Reobservation data from eight nests showed that of bumble bees which foraged within the crop, 81 % travelled ≤ 50 m and 56% ≤ 20 m from their nest. Results should be interpreted with extreme caution because fewer than 1 % of bumble bees marked at nests were reobserved in the crop. Because it was not established where the other 99% of the bumble bees went, foraging areas for nests could not be calculated as anticipated. Theories to explain the non-specificity of bumble bees to the crop include; resource depletion near nests, competition with honey bees in the crop, or an evolved strategy to disperse in order to minimise nest predation. Lucerne flowers contained a significantly lower concentration of sugar in nectar, and significantly fewer pollen grains than did those of purple loosestrife Lythrum salicaria L., a species on which bumble bees appeared to forage in preference Lucerne. The higher rewards offered by L. salicaria may have diverted bumble bees from the less-rewarding Lucerne crop. In a Norwegian meadow system, all foraging bouts by bumble bees B. lucorum (L.) within a patch of wood cranesbill flowers Geranium sylvaticum L. were random with respect to direction. This result is not consistent with predictions, based on optimal foraging theory, that movement should be directional to enable optimal pollen flow, and to avoid revisitation of just-emptied flowers by the pollinator. A medium-scale study of several bumble bee species moving between patches of northern wolfsbane Aconitum septentrionale Koelle in Norway revealed considerable loyalty by bumble bees to patches in which they were marked. In a different landscape-scale study (over 5 ha), several bumble bees exhibited a high degree of loyalty to areas in which they were marked (87% were reobserved ≤ 50 m from marking points). These restricted movement patterns are discussed in terms of potential pollen flow. Of 260 bumble bees marked, only five were recorded crossing between meadows, which could be a result of innate loyalty to small forage areas, an artefact of the sampling technique used, or forest boundaries acting as physical impediments to movement. In the future, spatial data of the type collected in this thesis will aid in the management of bumble bee populations to achieve both commercial and conservation goals. Spatial data can be applied to predict the optimal placement of artificially-reared nests, predict suitable isolation distances for pure seed crops, and aid in the positioning of supplementary forage sources and nest-site refuges.

Thesis (M.A.)--Miami University, Dept. of Communication, 2005. / Title from first page of PDF document. Includes bibliographical references (p. 40-42).

Trees are long living plants, which use carbon from the air and hydrogen and oxygen predominantly from soil water for their growth. They deposit these elements largely into a wood where they may persist for thousands of years. Tree growth is influenced by environment, especially by air temperature and precipitation. These factors have an effect on stomatal conductance and photosynthesis rate which influence carbon stable isotope ratio (13C/12C) in the tree tissue. This thesis is focus on stable carbon isotopes in tree-rings of Norway spruce attacked by honey mushroom, and Norway spruce which doesn?t show any signs of disease. The hypothesis of the thesis is based on an expected difference in carbon isotope fractionation during photosynthesis between the spruce attacked by honey mushroom and a ?healthy? spruce. The difference in isotope fractionation could be caused by water deficit induced by honey mushroom disease in the tree. We expect that the attacked spruce defends against water loss by closing stomata, and it could lead to lower CO2 concentration in the needles and higher ?13C value in tree-rings biomass The stable carbon isotope analysis (IRMS) was done on tree-rings of four spruce pairs, each one including an attacked spruce and spruce which didn?t show any signs of disease. Carbon isotope ratio of early wood, late wood and in biomass of the whole annual increment was measured. In contrary to our hypothesis we did not fined any systematic difference in isotopic composition between the attacked spruce and the spruce which did not show any signs of disease.

Activity of enzymes was investigated in the soils of Norway spruce forests in the Bohemian Forest. The aim of the study was the determintation of the impact of temperature and plants dominant in understorey on the activity of extracellular enzymes in the soils in the watershed of Plešné and Čertovo Lake. The measurement of enzymes activities was conducted using the fluorometric method with model substrates.

Notre nouveau défi est de protéger l’environnement. Pour réussir cette tâche, beaucoup considèrent qu'il faut réduire notre consommation énergétique. Le développement des énergies renouvelables permettra la réduction des gaz à effet de serre ainsi que notre consommation énergétique. Les pays nordiques ont mis en place des politiques énergétiques différentes selon leurs ressources et leurs expériences. Mais il n'est pas facile de réduire la consommation d’énergie quand les besoins augmentent et qu'il est nécessaire de conserver un haut niveau de vie. Les choix politiques sont très importants surtout pendant ces temps de crise. Il est cependant possible d'utiliser cette nouvelle révolution verte pour relancer l’économie, créer des emplois et bâtir un développement durable respectueux de l’environnement. C'est le défi auquel sont notamment confrontées les économies de l'Europe du nord. Les pays scandinaves partagent la même culture et la même histoire, mais leurs politiques énergétiques sont différentes. Ainsi, la Norvège exploite les hydrocarbures, le Danemark a opté pour l’énergie éolienne, la Suède et la Finlande recourent à l’énergie nucléaire et l’Islande développe son potentiel géothermique. Les choix énergétiques y ont souvent été argumentés par la réduction des gaz à effet de serre, même si la réalité est parfois divergente, les pays nordiques sont sur le bon chemin pour constituer un modèle dans le monde pour le développement durable et pour montrer une nouvelle façon de vivre et une nouvelle façon de penser aux générations futures. / Our new challenge is to succeed in protecting the environment; we have to reduce our energy consumption. The development of renewable energies will decrease greenhouse gases and our energy consumption. The Nordic countries have set up a different energy policy, depending on their own natural resources and know-how. It’s not easy to reduce energy consumption when needs are increasing. Political choices are very important, especially during this crisis period. We must use this new green revolution to revitalize the economy, create employment and build a good sustainable development, which respects the environment and society. The Nordic countries share the same culture, history and language, but their energy policies are different. Norway has chosen hydrocarbons, Denmark wind power, Sweden and Finland nuclear power and Iceland geothermal energy. These choices have always been an argument for the reduction of greenhouse gases, even if the reality is sometimes different. The Nordic countries are setting a good example to the world in sustainable development and showing a new way of life and thinking for the next generations.

Abstract Wood powders are used in numerous applications such as thermoplastics and filters, and a lot of research effort has been put into developing novel ways of utilising them. The mechanical processing of wood powders, especially at particle sizes below 100 µm, has been reported in several studies, but they lack information on the effect of fine grinding conditions on the particle morphology and cellulose crystallinity, both of which are important parameters in the further processing of wood powders and in their various applications. This makes it very difficult to design and optimise fine grinding processes with different applications in mind. The aim of this thesis was to study the dry fine grinding of wood in several impact-based fine grinding mills in order to find out their effect on the properties of the wood and to study the energy required for the mechanical processing of the resulting powders. The effect of the main operational parameters on the properties of dried Norway spruce wood and the energy consumption was studied using three impact-based fine grinding mills that were capable of pulverising the wood down to a median particle size of less than 25 µm. It was found that the impact events occurring in media mills can be used for the production of very fine wood powders with lower cellulose crystallinity and rounder shaped particles having more uniform shape distribution than powders pulverised to a similar size range by means of impact events in non-media mills. A practical estimate was obtained for the minimum specific energy consumption in fine grinding in mills involving grinding media that could be utilised as a target for optimisation. Impact-based media milling under cryogenic conditions can be used to obtain different Norway spruce wood powders from those produced under ambient grinding conditions, i.e. without the freezing effect of nitrogen liquid. The energy efficiency of fine grinding can be enhanced by choosing cryogenic rather than ambient conditions. The moisture content of the wood has greater influence on the size and shape of the particles when milling is accomplished under ambient conditions. Torrefaction can reduce the energy consumption in impact-based media mills for median particle sizes over 17.4 µm (± 0.2 µm), while the shape and cellulose crystallinity of the particles are not significantly affected by torrefaction pretreatment as a function of energy consumption. / Tiivistelmä Puujauheita käytetään laajalti erilaisissa sovelluksissa, kuten esimerkiksi biokomposiiteissa ja suodattimissa. Tämän lisäksi on olemassa paljon tutkimustietoa siitä, kuinka puujauheita voitaisiin hyödyntää laajemminkin. Puu voidaan mekaanisesti prosessoida alle 100 µm:n kokoluokkaan, mutta yksityiskohtaista tietoa kuivahienojauhatuksen olosuhteiden vaikutuksesta jauheiden morfologiaan ja selluloosan kiteisyyteen ei ole saatavilla. Puujauheen morfologialla ja selluloosan kiteisyydellä on kuitenkin merkittävä vaikutus sovelluksia ja jatkojalostusta ajatellen. Puun kuivahienojauhatuksen tiedon puute hankaloittaa merkittävästi prosessin suunnittelua ja optimointia erilaisia sovelluksia varten. Tämän väitöskirjan tavoitteena on selvittää iskuihin perustuvien hienojauhimien vaikutukset puun ominaisuuksiin ja tutkia mekaanisen prosessoinnin energiatehokkuutta hienojauhatuksessa. Tutkimuksessa selvitettiin kolmen erilaisen iskuun perustuvan hienojauhatusmyllyn pääasiallisten operointiparametrien vaikutusta kuivatun metsäkuusen ominaisuuksiin ja energiankulutukseen. Jokaisella hienojauhimella onnistuttiin tuottamaan puujauhoja, joiden mediaanikoko oli alle 25 µm. Iskuihin perustuvalla jauhinkappalemyllyllä saatiin tuotettua puujauhoa, jonka selluloosan kiteisyys on alhaisempi ja partikkelimuodot pyöreämpiä verrattuna samankokoisiin puujauhoihin, jotka on tuotettu iskuihin perustuvilla jauhinkappaleettomilla hienojauhatusmyllyillä. Työssä saatiin käytännöllinen arvio kuivatun metsäkuusen hienojauhatuksen minimienergiankulutukselle iskuihin perustuville jauhinkappalemyllyille, mitä voidaan käyttää kyseisten myllytyyppien optimoinnin tavoitteena. Työssä havaittiin lisäksi, että kryogeenisiä jauhatusolosuhteita käyttämällä voidaan tuottaa erilaisia puujauhoja verrattuna puujauhoihin, jotka prosessoidaan ilman nestetyppijäädytystä, kun jauhatus suoritetaan iskuihin perustuvalla jauhinkappalemyllyllä. Ilman nestetyppijäädytystä puun kosteuspitoisuudella on merkittävämpi vaikutus puujauhojen ominaisuuksiin kuin kryogeenisissä olosuhteissa jauhetuilla. Kryogeenisillä jauhatusolosuhteilla voidaan parantaa myös jauhatuksen energiatehokkuutta. Torrefioinnilla voidaan vähentää hienojauhatuksen energiankulutusta iskuihin perustuvilla jauhinkappalemyllyillä, kun tavoitekoon mediaani on yli 17,4 µm (± 0,2 µm). Torrefioinnilla ei ole vaikutusta selluloosan kiteisyyteen tai partikkeleiden muotoon energiankulutuksen funktiona.

In the wake of the Cold War, regional organizations have proliferated and are now a dominant theme in global politics. This study tests whether explanations for the Nordic peace can help to understand or construct other zones of peace in these increasingly important regional settings. With that in mind, this study compares the Nordic area of Denmark, Finland, Iceland, Norway, and Sweden with the Southern Cone region–here defined as Argentina, Chile, Paraguay, and Uruguay–and both are treated as regional, subsystemic zones of peace. Its significance lies in analysis of two developmentally disparate regions not yet compared in zones of peace literature. Using structured, focused comparison, this study is guided by fundamental questions about each region that assess the relationship between explanations for regional peace and their respective historical records. Understanding the conditions that permit the endurance of peace in today’s global context has far-reaching empirical and theoretical implications.