955 resultados para Nielsen, Rasmus, 1809-1884.
Resumo:
Most projects undertaken by government health organisations are formulated on values and beliefs about health and illness that are derived from Anglo/Celtic culture. Health beliefs differ between cultures and it has been identified that the differences in the Indigenous and non-Indigenous constructs of health impacts negatively on the effectiveness of mainstream healthcare provided to Indigenous peoples [2]. This implies that strategies that incorporate, or better still are derived from, Indigenous health beliefs have a greater potential to be effective. This article introduces a prospective survey project asking how western medicine and traditional treatments interface with each other.
Resumo:
The Antarctic system comprises of the continent itself, Antarctica, and the ocean surrounding it, the Southern Ocean. The system has an important part in the global climate due to its size, its high latitude location and the negative radiation balance of its large ice sheets. Antarctica has also been in focus for several decades due to increased ultraviolet (UV) levels caused by stratospheric ozone depletion, and the disintegration of its ice shelves. In this study, measurements were made during three Austral summers to study the optical properties of the Antarctic system and to produce radiation information for additional modeling studies. These are related to specific phenomena found in the system. During the summer of 1997-1998, measurements of beam absorption and beam attenuation coefficients, and downwelling and upwelling irradiance were made in the Southern Ocean along a S-N transect at 6°E. The attenuation of photosynthetically active radiation (PAR) was calculated and used together with hydrographic measurements to judge whether the phytoplankton in the investigated areas of the Southern Ocean are light limited. By using the Kirk formula the diffuse attenuation coefficient was linked to the absorption and scattering coefficients. The diffuse attenuation coefficients (Kpar) for PAR were found to vary between 0.03 and 0.09 1/m. Using the values for KPAR and the definition of the Sverdrup critical depth, the studied Southern Ocean plankton systems were found not to be light limited. Variabilities in the spectral and total albedo of snow were studied in the Queen Maud Land region of Antarctica during the summers of 1999-2000 and 2000-2001. The measurement areas were the vicinity of the South African Antarctic research station SANAE 4, and a traverse near the Finnish Antarctic research station Aboa. The midday mean total albedos for snow were between 0.83, for clear skies, and 0.86, for overcast skies, at Aboa and between 0.81 and 0.83 for SANAE 4. The mean spectral albedo levels at Aboa and SANAE 4 were very close to each other. The variations in the spectral albedos were due more to differences in ambient conditions than variations in snow properties. A Monte-Carlo model was developed to study the spectral albedo and to develop a novel nondestructive method to measure the diffuse attenuation coefficient of snow. The method was based on the decay of upwelling radiation moving horizontally away from a source of downwelling light. This was assumed to have a relation to the diffuse attenuation coefficient. In the model, the attenuation coefficient obtained from the upwelling irradiance was higher than that obtained using vertical profiles of downwelling irradiance. The model results were compared to field measurements made on dry snow in Finnish Lapland and they correlated reasonably well. Low-elevation (below 1000 m) blue-ice areas may experience substantial melt-freeze cycles due to absorbed solar radiation and the small heat conductivity in the ice. A two-dimensional (x-z) model has been developed to simulate the formation and water circulation in the subsurface ponds. The model results show that for a physically reasonable parameter set the formation of liquid water within the ice can be reproduced. The results however are sensitive to the chosen parameter values, and their exact values are not well known. Vertical convection and a weak overturning circulation is generated stratifying the fluid and transporting warmer water downward, thereby causing additional melting at the base of the pond. In a 50-year integration, a global warming scenario mimicked by a decadal scale increase of 3 degrees per 100 years in air temperature, leads to a general increase in subsurface water volume. The ice did not disintegrate due to the air temperature increase after the 50 year integration.
Resumo:
A detailed study is presented of the expected performance of the ATLAS detector. The reconstruction of tracks, leptons, photons, missing energy and jets is investigated, together with the performance of b-tagging and the trigger. The physics potential for a variety of interesting physics processes, within the Standard Model and beyond, is examined. The study comprises a series of notes based on simulations of the detector and physics processes, with particular emphasis given to the data expected from the first years of operation of the LHC at CERN.
Resumo:
Tutkimus luotaa 1800-luvun alkuvuosikymmenten Suomen suuriruhtinaskunnan virkamiehistön poliittisia asenteita sensuuri-ja painovapauskysymysten valossa. Sadan virkamiehistöön kuuluneen henkilön yksityiskirjastot ja niiden sisältämät mahdolliset sensuurin kieltämät nimikkeet on seulottu Kansalliskirjaston kokoelmissa olevista 1800- luvun kirjahuutokauppaluetteloista vertailemalla niitä Kansallisarkistossa säilytettäviin sensuuriviranomaisten kiellettyjen teosten listoihin. Tutkimuksen keskeisimmiksi teemoiksi nousevat näin poliittis- sekä kirjahistorialliset, kirjallista kulttuuria koskettelevat ulottuvuudet. Virkamiehistön yksityiskirjastot mahdollisine kiellettyine nimikkeineen on esitelty tilastollisen taulukoinnin avulla kirjastojen koon, virkamiehistön hallintoalan, rankiluokan sekä alueellisen identiteetin mukaan jaoteltuina. Vaikka lähdeaineiston perusteella on tämänkaltaisen poliittisväritteisen kirjallisen kulttuurin tavoittaminen osaksi ongelmallista, ovat huutokauppaluettelot systemaattisesta ja säännöllisestä luonteestaan johtuen merkittävää ja satunnaisten inventaarioluetteloiden ohella lähestulkoon ainoaa käsillä olevaa yksityiskirjastoja koskevaa lähdeaineistoa. Suomen 1800-luvun valtiolliseen asemaan liittyviä historiantulkintoja on tutkimuksen edetessä pyritty kuljettamaan rinnakkain; niitä ovat toisaalta suomalaisten käsitykset maansa perustuslaillisesta asemasta ja toisaalta venäläisten viranomaisten tulkinnat Suomen asemasta yleisvaltakunnallisessa viitekehyksessä. Tämän ohella tutkimusaihetta on lähestytty sen ajalliseeen kontekstiin olennaisesti kytkeytyvien yhteiskunta-ja historianfilosofisten teorioiden avulla. Ne ovat olleet myös tutkimuksen kohteena olleille aikalaisille relevantti henkinen ulottuvuus. Tämä on perusteltua, koska filosofista ja valtiotieteellistä kirjallisuutta on ollut kirjastoissa paljon. Etiikasta ja moraalista lähtevä vapauden ongelma on ollut yksi tämänkaltainen yhteiskuntafilosofinen kysymys. Tutkimuksessa aika ajoin esiin nouseva aatteellinen vertailu muiden Euroopan maiden oloihin laajentaa tutkimuksen historiallisen viitekehyksen osaksi 1800-luvun eurooppalaisen henkisen aatemaailman maisemaa. Tutkimuksen varovaiset johtopäätökset juontuvat erilaisista näkökulmista. Kiellettyjä nimikkeitä löytyi hieman yli 30 % kaikista virkamiehistön yksityiskirjastoista, mutta kiellettyjen nimikkeiden määrät osoittautuivat kirjastokohtaisesti laskettuna pienehköiksi. Ilmiön voi näin väittää olleen toisaalta marginaalista, mutta toisaalta konkreettinen osoitus poliittiseen vakaumukseen viittaavasta asennoitumisesta; sensuuria esimerkiksi saatettiin tulkita perustuslaillisuutta ja Aleksanteri I:n antaman hallitsijanvakuutuksen taustaa vasten. Kielletyn kirjallisuuden hankkiminen sensuurilaeista piittaamatta saattoi myös olla kamppailua hyvänä pidetyn yhteiskuntajärjestyksen puolesta järjestelmän epäkohtia vastaan. Keisaria kohtaan tunnettiin lojaalisuutta, mutta hänen hallitsemaansa järjestelmää edustavia sensuuriviranomaisia kohtaan välttämättä ei. Tässä kohdin Suomen tilanteella oli vastaavuutta Saksan oloihin, j o s s a nuorhegeliläiset halusivat muuttaa yhteiskuntaa ideaalimpaan suuntaan. Venäjän keisarikuntaan kuuluminen toi mukanaan maallista hyvää, mutta henkisen kulttuurin puolella orientoiduttiin pääasiassa länteen, ja pitäydyttiin Ruotsin ajan luomassa perinnössä. Yksi keskeinen tästä kummunnut valistusaatteen traditionaalinen arvo oli itsensä vapaa kehittäminen, joten sensuurikysymyksissä ajauduttiin väistämättä törmäyskurssille valtiopoliittisen ja kulttuurisen identiteetin ristipaineessa. Vaikka valtiopoliittinen identiteetti vaihtui vuoden 1809 jälkeen, ei kulttuurisen identiteetin kohdalla näin käynyt. Tätä kautta vahvistuu kokonaiskuva 1700-luvun historian ja Ruotsin ajan perinnön tärkeydestä 1800-luvun henkiselle kehitykselle etenkin kirjallisen kulttuurin saralla.
Resumo:
The dissertation discusses the history of the book and the Enlightenment in Finland by studying the reception and diffusion of eighteenth-century books and by approaching the discourse on the Enlightenment in Finnish source material. The methods used relate to historian Robert Darnton s studies on eighteenth-century print culture and his analyses of the relations between print culture and society. The study is based on diverse eighteenth-century sources: books, pamphlets and dissertations, bibliographies, book auction protocols, parliamentary documents, estate inventory deeds, newspapers, letters, lectures, memoirs and commonplace books. By the end of the eighteenth century, book production had increased and secular literature had begun to challenge the dominance of religious literature. The books of the Enlightenment belonged to the new literature that found its way into Finnish book collections previously dominated by religious literature. Enlightenment literature is not a set selection of books but rather diverse works from different genres. Thus the study introduces a variety of printed material, from philosophical tracts and textbooks to novels and pornography. In the case of books of the Enlightenment, the works of French Voltaire and German Christian Wolff were among the most widely read and circulated books in Finland. First and foremost, the Enlightenment was an era of intellectual debate. These debates carried strong criticism of the prevailing systems of thought. Enlightenment ideas challenged the Lutheran society of Sweden and especially its sense of conformity. Contemporaries saw many of the books of the Enlightenment as vessels of new ideas and criticism. Furthermore, this kind of print material was interpreted as being dangerous for uneducated readers. Belonging to a certain estate and social class had a major impact on individuals reading habits and their acquisition of books. One specific social group stands out in the Finnish source material: the officers at the Sveaborg naval fortress possessed and distributed Enlightenment books more than the members of any other social class. Other essential social groups were scholars, the nobility and the clergy, who took part in debates concerning the ideas and benefits of the Enlightenment. In the Finnish debates at the time, the concept of Enlightenment involved three primary notions. Firstly, it referred to the French philosophers, les philosophes, and to their works as well as to the social changes that took place during the French revolution. It also carried the idea of philosophical light or the light of reason, in a sense similar to Immanuel Kant s writings. Most importantly, it referred to a belief in progress and to a trust in true knowledge that would supercede ignorance and fanaticism. Hence, it is impossible to speak about the Enlightenment era in the Swedish realm without such concepts as reason, benefit or progress. These concepts likewise marked the books of the Enlightenment in eighteenth-century Finland.
Resumo:
The use of microwave heating technique for the acceleration of ortho ester Claisen rearrangement (a three step transformation) is described. Irradiation of a DMF solution of the allyl alcohol 5, triethyl orthoacetate and propionic acid (catalytic) in an Erlenmeyer flask for 10 minutes in a microwave oven generated the ester 8 in 83% yield. Analogously, ortho ester Claisen rearrangement of a variety of allyl and propargyl alcohols (9, 12-22) were achieved. The formation of the diester 10 from 2-butyne-1,4-diol (9) via the ortho ester Claisen rearrangement of two allyl alcohol moieties (involving sh steps) in 15 minutes, demonstrates the versatility of the microwave heating technique.
Resumo:
The rapid disruption of tropical forests probably imperils global biodiversity more than any other contemporary phenomenon(1-3). With deforestation advancing quickly, protected areas are increasingly becoming final refuges for threatened species and natural ecosystem processes. However, many protected areas in the tropics are themselves vulnerable to human encroachment and other environmental stresses(4-9). As pressures mount, it is vital to know whether existing reserves can sustain their biodiversity. A critical constraint in addressing this question has been that data describing a broad array of biodiversity groups have been unavailable for a sufficiently large and representative sample of reserves. Here we present a uniquely comprehensive data set on changes over the past 20 to 30 years in 31 functional groups of species and 21 potential drivers of environmental change, for 60 protected areas stratified across the world's major tropical regions. Our analysis reveals great variation in reserve `health': about half of all reserves have been effective or performed passably, but the rest are experiencing an erosion of biodiversity that is often alarmingly widespread taxonomically and functionally. Habitat disruption, hunting and forest-product exploitation were the strongest predictors of declining reserve health. Crucially, environmental changes immediately outside reserves seemed nearly as important as those inside in determining their ecological fate, with changes inside reserves strongly mirroring those occurring around them. These findings suggest that tropical protected areas are often intimately linked ecologically to their surrounding habitats, and that a failure to stem broad-scale loss and degradation of such habitats could sharply increase the likelihood of serious biodiversity declines.
Resumo:
Cryptococcus neoformans is a pathogenic basidiomycetous yeast responsible for more than 600,000 deaths each year. It occurs as two serotypes (A and D) representing two varieties (i.e. grubii and neoformans, respectively). Here, we sequenced the genome and performed an RNA-Seq-based analysis of the C. neoformans var. grubii transcriptome structure. We determined the chromosomal locations, analyzed the sequence/structural features of the centromeres, and identified origins of replication. The genome was annotated based on automated and manual curation. More than 40,000 introns populating more than 99% of the expressed genes were identified. Although most of these introns are located in the coding DNA sequences (CDS), over 2,000 introns in the untranslated regions (UTRs) were also identified. Poly(A)-containing reads were employed to locate the polyadenylation sites of more than 80% of the genes. Examination of the sequences around these sites revealed a new poly(A)-site-associated motif (AUGHAH). In addition, 1,197 miscRNAs were identified. These miscRNAs can be spliced and/or polyadenylated, but do not appear to have obvious coding capacities. Finally, this genome sequence enabled a comparative analysis of strain H99 variants obtained after laboratory passage. The spectrum of mutations identified provides insights into the genetics underlying the micro-evolution of a laboratory strain, and identifies mutations involved in stress responses, mating efficiency, and virulence.