Araucaria forest dynamics in relation to fire frequency in southern Brazil based on fossil and modern pollen dataf

To elucidate the relationship between forest dynamics and fire frequency pollen percentages and charcoal amounts from a 120 cm long peat core and from samples of modern pollen rain were collected along a transect. The study site in southern Brazil is characterized by a species-rich mosaic of grassland-Araucaria forest. It is of crucial importance for management strategies for conservation to understand the development and maintenance of these vegetation mosaics including their sharp forest-grassland boundaries. During the late Holocene, considerable changes occurred in the area. From Anno Domini (AD) 1360 to 1410, the area was dominated by Campos (grassland) vegetation and fire was very common. From AD 1410 to 1500, Araucaria forest expanded and fire was less frequent. From AD 1500 to 1580, Campos grassland spread and the Araucaria forest ceased its development, apparently due to the increase of fire. From AD 1580 to 1935, after a decrease in fire frequency, Araucaria forest expanded again. From AD 1935 to the present, the Araucaria forest expanded while the Campos area decreased. Fire was very rare in this period. The results indicate a strong interaction of forest expansion, forming a mosaic of Campos and Araucaria forest, and the frequency of fire during the past 600 years. A possible collapse of the indigenous population following the post-Colombian colonization in southern Brazil after about AD 1550 may have caused a great reduction of fire frequency. The introduction of cattle (probably after AD 1780) and the resulting decrease of fire frequency might be the reason for forest expansion. Fire is probably the most important factor controlling the dynamics of the forest-grassland mosaics and the formation of sharp borders between these two vegetation types. (C) 2010 Elsevier B.V. All rights reserved.

Upgrading a TCABR data analysis and acquisition system for remote participation using Java, XML, RCP and modern client/server communication/authentication

The TCABR data analysis and acquisition system has been upgraded to support a joint research programme using remote participation technologies. The architecture of the new system uses Java language as programming environment. Since application parameters and hardware in a joint experiment are complex with a large variability of components, requirements and specification solutions need to be flexible and modular, independent from operating system and computer architecture. To describe and organize the information on all the components and the connections among them, systems are developed using the extensible Markup Language (XML) technology. The communication between clients and servers uses remote procedure call (RPC) based on the XML (RPC-XML technology). The integration among Java language, XML and RPC-XML technologies allows to develop easily a standard data and communication access layer between users and laboratories using common software libraries and Web application. The libraries allow data retrieval using the same methods for all user laboratories in the joint collaboration, and the Web application allows a simple graphical user interface (GUI) access. The TCABR tokamak team in collaboration with the IPFN (Instituto de Plasmas e Fusao Nuclear, Instituto Superior Tecnico, Universidade Tecnica de Lisboa) is implementing this remote participation technologies. The first version was tested at the Joint Experiment on TCABR (TCABRJE), a Host Laboratory Experiment, organized in cooperation with the IAEA (International Atomic Energy Agency) in the framework of the IAEA Coordinated Research Project (CRP) on ""Joint Research Using Small Tokamaks"". (C) 2010 Elsevier B.V. All rights reserved.

Design of a Modern Liposome and Bee Venom Formulation for the Traditional VIT-Venom Immunotherapy

Traditional venom immunotherapy uses injections of whole bee venom in buffer or adsorbed in Al (OH)(3) in an expensive, time-consuming way. New strategies to improve the safety and efficacy of this treatment with a reduction of injections would, therefore, be of general interest. It would improve patient compliance and provide socio-economic benefits. Liposomes have a long tradition in drug delivery because they increase the therapeutic index and avoid drug degradation and secondary effects. However, bee venom melittin (Mel) and phospholipase (PLA(2)) destroy the phospholipid membranes. Our central idea was to inhibit the PLA(2) and Mel activities through histidine alkylation and or tryptophan oxidation (with pbb, para-bromo-phenacyl bromide, and/or NBSN-bromosuccinimide, respectively) to make their encapsulations possible within stabilized liposomes. We strongly believe that this formulation will be nontoxic but immunogenic. In this paper, we present the whole bee venom conformation characterization during and after chemical modification and after interaction with liposome by ultraviolet, circular dichroism, and fluorescence spectroscopies. The PLA(2) and Mel activities were, measured indirectly by changes in turbidity at 400(nm), rhodamine leak-out, and hemolysis. The native whole bee venom (BV) presented 78.06% of alpha-helical content. The alkylation (A-BV) and succynilation (S-BV) of BV increased 0.44 and 0.20% of its alpha-helical content. The double-modified venom (S-A-BV) had a 0.74% increase of alpha-helical content. The BV chemical modification induced another change on protein conformations observed by Trp that became buried with respect to the native whole BV. It was demonstrated that the liposomal membranes must contain pbb (SPC:Cho:pbb, 26:7:1) as a component to protect them from aggregation and/or fusion. The membranes containing pbb maintained the same turbidity (100%) after incubation with modified venom, in contrast with pbb-free membranes that showed a 15% size decrease. This size decrease was interpreted as membrane degradation and was corroborated by a 50% rhodamine leak-out. Another fact that confirmed our interpretation was the observed 100% inhibition of the hemolytic activity after venom modification with pbb and NBS (S-A-BV). When S-A-BV interacted with liposomes, other protein conformational changes were observed and characterized by the increase of 1.93% on S-A-BV alpha-helical content and the presence of tryptophan residues in a more hydrophobic environment. In other words, the S-A-BV interacted with liposomal membranes, but this interaction was not effective to cause aggregation, leak-out, or fusion. A stable formulation composed by S-A-BV encapsulated within liposomes composed by SPC:Cho:pbb, at a ratio of 26:7:1, was devised. Large unilamellar vesicles of 202.5 nm with a negative surface charge (-24.29 mV) encapsulated 95% of S-A-BV. This formulation can, now, be assayed on VIT.

Bini Customary law of inheritence : a shift in Igiogbe as a case study

Igiogbe cultural heritage has existed since the founding of Bini kingdom without any controversy; however since the Supreme Court decision in Idehen v Idehen the issue of Igiogbe has assumed new dimensions. Igiogbe - the house in which a Benin man lived and died devolves on his first son absolutely; but since the beginning of 20th century litigation as to the real meaning of Igiogbe and who is entitled to inheritance thereof began to increase. Controversies and increase in litigation over Igiogbe has occasioned a shift in the practice, the Bini’s are not conscious of some of these changes, most of them (Bini’s) still claim Igiogbe practices is rigidly adhered to. This study on Igiogbe inheritance in Bini kingdom is therefore carried out with a view to bringing out the changes in Igiogbe cultural practice using legal and anthropological tools to examine the changes. While laying the foundation for the discussion on the main research object the researcher examined the origin and status of customary law in Nigeria. There after I examined Igiogbe inheritance in Bini kingdom. Igiogbe and the issue of first son were critically analyzed with the aid of the research questions bringing out the changes in Igiogbe concept from traditional practice to modern practice. Study shows Igiogbe practice is still relevant in modern Bini kingdom, however, the shift and changes in practice of this cultural milieu has lead me to ask some fundamental questions which I intend to answer in the broader research work in future.

The Significance of World Heritage : Origins, Management, Consequences : The Future of the World Heritage Convention in a Nordic Perspective

Världsarvets Världar

Factors influencing tourism sustainability : The case of the World Heritage Falun Great Copper Mountain

This thesis focuses on identifying hindrances of achieving a sustainable tourism development on a base of a World Heritage Site. Using a case study of the World Heritage Site Falun Great Copper Mountain, the thesis assesses the situational context by using qualitative methods. Five semi- structured interviews with influential stakeholders were conducted to get an inside view of the current situation and to identify site-specific issues. The thesis identifies a number of factors that determine the successful implementation of measures leading towards sustainable tourism in the long-run; the most important being the lack of clear guidelines for the whole destination and no holistic planning approach within the municipality. The thesis concludes that despite the increased pressures towards establishment of sustainable tourism, the concept remains challenging to operationalize for the World Heritage Site without frameworks and tools from UNESCO.

Vilhelm Ekelund och den fransk-italienska kultursfären : Några nedslag i de tidiga prosaverken - från Antikt ideal (1909) till Attiskt i fågelperspektiv (1919)

Vilhelm Ekelund och den fransk-italienska kultursfären: Några nedslag i de tidiga prosaverken – från Antikt ideal (1909) till Attiskt i fågelperspektiv (1919). (Vilhelm Ekelund and the French and Italian cultural heritage: A study of his early prose – from Antikt ideal (1909) to Attiskt i fågelperspektiv (1919)). The Swedish poet, essayist and aphorist Vilhelm Ekelund was not only influenced by German literature and philosophy, he also wrote extensive literary criticism on the subject of Romance language authors. This article discusses Ekelund’s relationship to some of the most influential French and Italian writers – as it can be seen in his work during the period 1909-1919. This relationship was ambiguous: he paid homage to French authors such as Montaigne, Montesquieu, Stendhal and Comte – as well as to the Italian poet and philosopher Leopardi – but he also severely criticized such distinguished writers as Baudelaire, Rousseau and Maupassant. One conclusion of this article is that the authors praised by Ekelund all venerate the Greek and Roman cultural heritage, whereas the despised novelists and poets were, in his opinion, either too “modern” or too “feminine” – both highly pejorative adjectives in the author’s terminology. It is also noted that Ekelund’s most ferocious attacks date from the first part of the decade, before he entered a more harmonic period with the works Metron (1918) and Attiskt i fågelperspektiv (1919).

Ensamhet - gemenskap : Ett spänningsfält i Vilhelm Ekelunds författarskap

For the Swedish poet, essayist and aphorist Vilhelm Ekelund, ensamhet (solitude) and gemenskap (intellectual and spiritual community) were highly complex notions, with various and often contradictory meanings. In this article, I argue that both concepts have positive as well as negative connotations in Ekelund’s texts. Solitude can be sweet and delightful and the poet/writer may long for it, but it can also appear to him as a sordid and painful state. In the same way, life with other people may be just as difficult and complicated. I show that Ekelund as a young poet both embraced solitude as a positive notion and suffered from depressing isolation. The theme of solitude also appeared in his early prose as a heroic stance fitting for an extraordinary person. According to Ekelund, the fate of the truly gifted artist is loneliness, and he will find great difficulties connecting with people around him. In fact, he will find intellectual and spiritual community only when communicating with the great precursors – in Ekelund’s case that meant the prominent figures of Greek and Roman cultural heritage. “Modern” artists interested him only in so much as they openly venerated this classicist tradition. Ekelund may have despaired at the idea of an intellectual or spiritual community with his contemporaries; he was, nevertheless, optimistic regarding the ability of later generations to understand him. He was convinced that he did not write for people in his own time but, indeed, for posterity.

Mellan etnologi och modern sociologi : K. Rob. V. Wikman som medlare i Finland och Sverige

Between ethnology and sociology: K. Rob. V. Wikman as a mediator in Finland and Sweden K. Rob. V. Wikman, professor in sociology at the Åbo Akademi University in Turku, Finland, played a central role both within Finnish and Swedish sociology in the 1940s and 1950s. He was a student of Westermarck and thus his own research represented an ethnosociological tradition, which at that time was challenged by modern, American-influenced sociological ideas. The aim of this article is to discuss the adaptation of “modern sociology” and the drawing of boundaries in Nordic sociology after the Second World War by focusing on Wikman’s work in Finnish as well as Swedish sociology, especially the assessor assignments he was given, and by giving emphasis to some of those that served as border poles or border markers in this process. The comparative starting point gives us reason to discuss some nationally characterized similarities and differences that can be observed in the establishment process of modern sociology in Finland and Sweden.

Från traditionellt akademiskt bibliotek till modern lärmiljö : Högskolan Dalarnas bibliotek – förväntningar och resultat

I denna rapport beskrivs idéerna bakom Högskolan Dalarnas prisbelönta bibliotek i Falun. Planerings- och byggprocessen beskrivs och det färdiga resultatet utvärderas, samt de erfarenheter som har gjorts delas.

From a traditional academic library to a modern learning environment : Dalarna University Library - expectations and results

This report describes the ideas and vision behind Dalarna University's award-winning library in Falun. A description of the planning and construction processes and an evaluation of the final outcome are presented together with experiences and observations drawn from the project.

"Vox Populi, Vox Dei" - A Discussion of Dissent Within the Modern Catholic Church

The final question is: what happens in the meantime? Is it effective to dissent while conservatives hold power and clearty are not about to make any major changes? What good does it do to repeatedly bang one's head against the wall when progress is not being made? There is no one simple answer to this question, but rather several applicable ones. The first possible answer is that dissent currently does little good. The conservative hierarchy is still the dominant force within Catholicism. This hierarchy has made a habit, evidenced by the birth control debate, of pressing its conservative agenda despite popular opposition. Many people think, that if this hierarchy has not given in to the mass of opinion against it yet, dissent is futile and useless. Why argue with someone who does not listen to your argument?

Beethoven’s Influence on Modern Musical Thought

Ludwig van Beethoven is undoubtedly one of the most important and influential composers of Western art music. From a young age, he exhibited considerable talent, independence, and willful nonconformity. Over the course of his life, these themes came through both in his compositions, and in his attitude towards social norms regarding music. Composing symphonies, sonatas, string quartets, concertos, and one opera, Beethoven shattered musical boundaries and set the stage for how musicians and listeners would think about music for the next 200 years, up to modern day. This afternoon I will explore various ways in which Beethoven’s conception of music continues to influence our thinking about music, even rock, through analysis of The Beatles’ “A Day in the Life,” off their 1967 album Sgt. Pepper’s Lonely Hearts Club Band.