The structural and mechanical integrity of historic wood

Little is known about historic wood as it ages naturally. Instead, most studies focus on biological decay, as it is often assumed that wood remains otherwise stable with age. This PhD project was organised by Historic Scotland and the University of Glasgow to investigate the natural chemical and physical aging of wood. The natural aging of wood was a concern for Historic Scotland as traditional timber replacement is the standard form of repair used in wooden cultural heritage; replacing rotten timber with new timber of the same species. The project was set up to look at what differences could exist both chemically and physically between old and new wood, which could put unforeseen stress on the joint between them. Through Historic Scotland it was possible to work with genuine historic wood from two species, Oak and Scots pine, both from the 1500’s, rather than relying on artificial aging. Artificial aging of wood is still a debated topic, with consideration given to whether it is truly mimicking the aging process or just damaging the wood cells. The chemical stability of wood was investigated using Fourier-transform infrared (FTIR) microscopy, as well as wet chemistry methods including a test for soluble sugars from the possible breakdown of the wood polymers. The physical properties assessed included using a tensile testing machine to uncover possible differences in mechanical properties. An environmental chamber was used to test the reaction to moisture of wood of different ages, as moisture is the most damaging aspect of the environment to wooden cultural objects. The project uncovered several differences, both physical and chemical, between the modern and historic wood which could affect the success of traditional ‘like for like’ repairs. Both oak and pine lost acetyl groups, over historic time, from their hemicellulose polymers. This chemical reaction releases acetic acid, which had no effect on the historic oak but was associated with reduced stiffness in historic pine, probably due to degradation of the hemicellulose polymers by acid hydrolysis. The stiffness of historic oak and pine was also reduced by decay. Visible pest decay led to loss of wood density but there was evidence that fungal decay, extending beyond what was visible, degraded the S2 layer of the pine cell walls, reducing the stiffness of the wood by depleting the cellulose microfibrils most aligned with the grain. Fungal decay of polysaccharides in pine wood left behind sugars that attracted increased levels of moisture. The degradation of essential polymers in the wood structure due to age had different impacts on the two species of wood, and raised questions concerning both the mechanism of aging of wood and the ways in which traditional repairs are implemented, especially in Scots pine. These repairs need to be done with more care and precision, especially in choosing new timber to match the old. Within this project a quantitative method of measuring the microfibril angle (MFA) of wood using polarised Fourier transform infrared (FTIR) microscopy has been developed, allowing the MFA of both new and historic pine to be measured. This provides some of the information needed for a more specific match when selecting replacement timbers for historic buildings.

Resposta imune à saliva de flebotomíneos (diptera: psychodidae) em indivíduos residentes em áreas urbana e periurbana no nordeste do brasil

Visceral leishmaniasis (VL) has a wide geographical distribution in tropical and subtropical areas of the planet, which is a protozoan parasite of the genus Leishmania. This pathogen is transmitted to the host through the sandflies bite, with its saliva, the immune response that leads to both. In the state of Rio Grande do Norte, 85% of the sand flies captured is Lutzomyia longipalpis, but the second most abundant, Lutzomyia evandroi, it deserves emphasis because its wide distribution and eclectic behavior. The exposure of people living in endemic areas for the insect vector VL greatly increases the chances of infection. This study aimed to evaluate aspects of the epidemiological profile of VL in endemic areas of human and nonendemic in the metropolitan area of Natal, as well as verify the abundance and seasonal fluctuations of sandflies species in two counties endemic for VL. Were collected in the municipalities of Nísia Floresta, Parnamirim, São Gonçalo do Amarante and Macaíba, of which groups of females were separated for further dissection of the salivary glands and identification of species. The blood samples used were from individuals of two Natal s districts where it has never been reported cases of VL and neighborhoods of Parnamirim applicants who present cases of VL. In the municipality of Nísia Floresta, the most abundant species was L. evandroi with 38.39%, followed by L. longipalpis with 36.22%, L. walkeri 19.67% L. lenti 3.81%, L. wellcomei 1.39% and L. whitmani 0.52%. Already in Parnamirim the proportions were L. walkeri with 73.15%, L. evandroi with 10.55%, L. wellcomei 7.63%, L. longipalpis 6.37%, L. whitmani 1.46%, L. sordellii 0.52%, L. intermedia 0.21 and L. shanonni 0.1%. In both municipalities was observed higher abundance of species distributed in the initial months of the year, as February and March. The study showed that no difference in exposure to the vector of VL among individuals from endemic and non endemic area for this disease. But there are differences in exposure between individuals of L. longipalpis and L. evandroi, confirming the great powers of the first vector. It was also characterized as predominant phenotype in the population of endemic areas who had negative serologic responses to antigens of Leishmania and result in negative Montenegro skin test (DTH), indicating that much of the population hasn t been bitten by infected insects

Reimagining Ruins: Preserve | Utilize | Interact

This thesis will examine ways to preserve ruinous structures, utilize their aesthetics, and design an interactive intervention that weaves the old and new together in a seamless way. Ruinous structures should not be seen as an eye-sore to the image of the city. In fact, it is a reminder of all the things the city has faced in the past. This thesis analyzes different ways that previous designers have rehabilitated pre-existing structures. These methods are applied to each potential site in order to determine which typology would prove most fruitful. Site selection followed specific criteria. The first is that the structure could not be a complete building. Second, the site should be part of a community. And third, the structure should be located in an urban area. By the end of this journey, this thesis seeks awareness having pre-existing structures woven into new designs, and as an opportunity to inspire.

Culture change in a museum: An action research analysis

The move of a museum in the western United States to larger quarters resulted in an increase in visitors and requests for tours. To respond to the greater number of tours, new volunteers (docents) were recruited and trained. But conflicts arose between the old and new docents. As Docent Chair, one of the authors worked with the Curator of Education to understand the culture change faced by the old docent group and integrate the old and new docent groups. This paper analyzes the culture change using Lewin’s Action Research model. The success of the culture integration was demonstrated when the old and new docents moved away from «this is how it should be done…» to «this is what I see…» in speaking about an event or problem. The language and perception changes were steps toward building a common meaning.

The EU and the Domestic Politics of Welfare State Reforms

Does European integration influence national social policies? What is the use of EU laws, orientations and guidelines? Based on a systematic comparison of ten national cases, including both old and new member states, representing all families of welfare regimes, this volume explores and specifies the mechanisms through which the EU plays a role in domestic social policy changes. It focuses on where, when and how national actors use the tools and resources offered by the process of European integration to support them in the national welfare reforms they are engaged in. The comprehensive research design and the systematic comparisons provide a unique opportunity to fully grasp the mechanisms of domestic welfare state change within the context of the European Union multilevel political system. This book proposes both a new step within the Europeanization and the welfare state literatures. It confirms the idea that Europe matters in a differential way since EU social policy will be selectively used by domestic political actors in accordance with their political preferences. It provides a clear explanation of why no EU-induced social policy change can occur without an overall support offered by key domestic decision-makers. (Résumé éditeur)

Abundance of Lutzomyia longipalpis in urban households as risk factor of transmission of visceral leishmaniasis

Urban occurrence of human and canine visceral leishmaniasis (VL) is linked to households with characteristics conducive to the presence of sand flies. This study proposes an ad hoc classification of households according to the environmental characteristics of receptivity to phlebotominae and an entomological study to validate the proposal. Here we describe the phlebotominae population found in intra- and peridomiciliary environments and analyse the spatiotemporal distribution of the VL vector Lutzomyia longipalpis of households receptive to VL. In the region, 153 households were classified into levels of receptivity to VL followed by entomological surveys in 40 of those properties. Kruskal-Wallis verified the relationship between the households’ classification and sand fly abundance and Kernel analysis evaluated L. longipalpis spatial distribution: of the 740 sand flies were captured, 91% were L. longipalpis; 82% were found peridomiciliary whilst the remaining 18% were found intradomiciliary. No statistically significant association was found between sandflies and households levels. L. longipalpis counts were concentrated in areas of high vulnerability and some specific households were responsible for the persistence of the infestation. L. longipalpis prevails over other sand fly species for urban VL transmission. The entomological study may help target the surveillance and vector control strategies to domiciles initiating and/or maintaining VL outbreaks.

Ihanteena orjuuteen perustuva kristillinen yhteiskunta – Uskonnollinen ja yhteiskunnallinen orjuuden ja etelävaltioiden puolustus baptistipastori Ebenezer W. Warrenin romaanissa Nellie Norton

Yhdysvalloissa kehittyi noin vuosina 1850–1865 erityinen orjuutta puolustamaan noussut kaunokirjallisuuden lajityyppi. Sen synty oli osa etelävaltioiden elämäntavan ja siihen keskeisesti liittyneen orjuuden taakse organisoitunutta puolustautumista, joka kehittyi erityisesti kolmena Yhdysvaltojen sisällissotaa edeltäneenä vuosikymmenenä, jolloin etelän orjajärjestelmä joutui kovan arvostelun kohteeksi. Orjuuden puolustajien kirjoittama romaanikirjallisuus voidaan nähdä eräänlaisena etelän vastareaktiona Harriet Beecher Stowen suuren suosion saaneelle orjuutta kritisoineelle romaanille Setä Tuomon tupa, joka julkaistiin vuonna 1852. Keskityn tutkielmassani yhteen tämän orjuutta puolustaneen romaanikirjallisuuden edustajaan, baptistipastori Ebenezer W. Warrenin vuonna 1864 julkaisemaan romaaniin Nellie Norton: or Southern Slavery and the Bible. A scriptural refutation of the principal arguments upon which the abolitionists rely. A vindication of southern slavery from the old and new testaments. Romaani sijoittuu julkaisuajankohtansa puolesta lajityyppinsä viimeisimpien edustajien joukkoon. Tutkielmassani tarkastellaan, minkälaisista argumenteista romaanin keinoin esitetty orjuuden puolustus koostuu. Tämän lisäksi tarkastelen myös sitä, millainen kuva romaanissa annetaan etelävaltioiden, ja toisaalta niiden vastapuolena näyttäytyvien pohjoisten osavaltioiden ja Englannin elämäntavasta ja maailmankuvasta. Tutkielmani osoittaa orjuuden puolustuksen rakentuvan Warrenin romaanissa erityisesti uskonnollisista, rasistisista sekä yhteiskunnallisista argumenteista. Romaanissa luodaan näiden kautta voimakas vastakkainasettelu etelän orjayhteiskunnan ja pohjoisen ja Englannin vapaaseen työvoimaan perustuneiden teollistuneiden yhteiskuntien välille. Etelän kirjaimelliset ja konservatiiviset tulkinnat Raamatusta ja sen asemasta moraalin ja yhteiskuntajärjestyksen ylimpänä määrittelijänä asetetaan abolitionistien harhaoppisiksi esitettyjen liberaalimpien ja modernimpien raamatuntulkintojen vastakohdaksi. Vastaavasti etelän orjuuteen perustuvan yhteiskunnan rakenteet ja instituutiot esitetään raamatullisina ja hyveellisinä, siinä missä vapaaseen työvoimaan perustuneet yhteiskunnat esitetään moraalittomina ja raadollisina. Romaanista välittyy erityisesti kuva konservatiivisesta maailmasta, jossa uskonnolliset ja rasistiset ajattelumallit ovat keskeisessä asemassa pyrittäessä puolustamaan ja ylläpitämään orjuuteen perustuvaa eteläistä elämäntapaa.

A prevenção quaternária nos itinerários de saúde e doença

"Ao longo das nossas vidas, percorremos itinerários de saúde e doença ,encontramos fenómenos de medicalização, farmacologização do quotidiano das sociedades, que coexistem com práticas de auto-medicação crescente, em contextos de cada vez maior comorbilidade, e iatrogenia. O consumo de medicamentos está presente em toda esta fenomenologia e não tem parado de crescer nas nossas sociedades, que se orientam para um envelhecimento cada vez mais tardio dos seus elementos, levando ao aparecimento cada vez mais importante de velhas e novas doenças crónicas: todos os anos na Europa morrem á volta de 197000 pessoas devido aos efeitos secundários dos medicamentos, em França representam a primeira causa de hospitalização, sendo os que actuam no sistema nervoso central os mais frequentemente implicados. Para melhor compreender as práticas de saúde dos jovens universitários, foram inquiridos 502 alunos de cursos da área da saúde que surpreendentemente revelam bom senso,espirito crítico e mesmo práticas concordantes com a prevenção quaternária."

Projectar com luz, cor e matéria

Dissertação para obtenção do grau de Mestre em Arquitectura com Especialização em Arquitectura de Interiores, apresentada na Universidade de Lisboa - Faculdade de Arquitectura.

Propuesta para un viraje en el estudio de los medios en Las Márgenes

Este artículo explora diferentes tipos de apropiación de tecnologías mediáticas en las márgenes y propone un cambio en el acercamiento investigativo en diferentes niveles: 1) en lugar de centrarse en tecnologías individuales, la investigación sobre medios en las márgenes debe examinar cómo los/as comunicadores locales se desenvuelven en ecologías mediáticas que ofrecen recursos y retos específicos en cada situación histórica; 2) en lugar de tratar de determinar si las tecnologías mediáticas usadas en las márgenes son nuevas u obsoletas, digitales o no, es urgente comprender cómo los/as comunicadores asentados en lo local detectan necesidades de información y comunicación específicas y usan las tecnologías disponibles para abordar tales necesidades; 3) la investigación sobre medios en las márgenes debe esclarecer cómo las/los protagonistas de este tipo de comunicación ciudadana y comunitaria reinventan, hibridan, reciclan y tienden lazos entre plataformas tecnológicas. En resumen, para entender las tecnologías mediáticas en las márgenes la investigación debe asumir altos niveles de complejidad, debe mantener la noción de ecologías mediáticas y entender cómo, a nivel local, comunicadores comunitarios profundamente inmersos en lo cotidiano e histórico, ajustan las tecnologías mediáticas a las necesidades de sus comunidades.

Trajectoire de la réforme de l’inspection en Belgique francophone

L’article montre que la trajectoire de la réforme de l’inspection en Fédération Wallonie-Bruxelles (FWB) est loin d’être linéaire. Elle est marquée par des processus de reconversion institutionnelle d’institutions existantes, mais aussi de sédimentation et d’hybridation entre l’« ancien » et le « nouveau ». En effet, elle participe à la fois d’une politique de changement institutionnel ambitieuse et de construction du « système scolaire » dans un paysage au départ assez décentralisé et fragmenté ; mais, simultanément, elle est marquée par des « contraintes » institutionnelles existantes, des négociations et transactions entre différents acteurs politiques et scolaires qui déterminent les contours et les compétences du nouveau corps d’inspection en gestation après le décret de 2007 comme les rôles des inspecteurs et leur division du travail avec d’autres acteurs. De plus, dans la mise en œuvre du décret, les orientations normatives, cognitives et professionnelles des acteurs, la permanence de la diversité institutionnelle des réseaux comme la variance structurelle des territoires « modulent » et « tempèrent » l’ambition du changement institutionnel affiché par la politique de la FWB. Cela change mais pas complètement : il y a un processus de conversion partielle et « en tension » de l’institution qu’est l’inspection.

Contribuições da Sociologia para a Análise sobre o Espaço

RESUMO: O espaço tem sido considerado como uma matéria-prima de interesse para uma pluralidade de ciências. A sua abordagem vai da Física à Geometria, da Economia à Sociologia e assume várias e diversas reflexões teóricas sobre as diferentes temáticas de que é detentor. Se nos primórdios da Sociologia não havia um interesse particular sobre o espaço e, em particular, sobre o fenómeno urbano e pelas suas reconfigurações resultantes da Revolução Industrial, não é menos verdade que a influência exercida hoje sobre a Sociologia e os sociólogos foi, e continua a ser exercida, por parte dos autores que estão na base do edifício da teoria sociológica. E essa influência foi a grande responsável pelo desenvolvimento dos saberes específicos de que são detentoras a Sociologia Espacial, Sociologia Urbana e a Sociologia Rural e a atual Sociologia do Território, que para além das teorias produzidas são ainda responsáveis pelos debates em torno de velhas e de novas questões que a Sociologia procura resolver. ABSTRACT: Space has been considered as a raw material of interest to a plurality of sciences. His approach goes from Physics to Geometry, from Economics to Sociology and assumes several and diverse theoretical reflections on the different themes of which he holds. If in the early days of Sociology there was no particular interest in space and in particular in the urban phenomenon and its reconfigurations resulting from the Industrial Revolution, it is no less true that the influence exerted today on sociology and sociologists was, and continues To be exercised, on the part of the authors who are at the base of the building of the sociological theory. And this influence was the great responsibility for the development of the specific knowledge that holds Space Sociology, Urban Sociology and Rural Sociology and the current Sociology of the Territory, which in addition to the theories produced are still responsible for the debates around old and New questions that Sociology seeks to solve.

'Aedes sacrae' e 'edifici destinati all'esercizio pubblico del culto cattolico': la condizione giuridica delle chiese in Italia tra diritto canonico e ordinamento statale

Già ad uno sguardo esterno la normativa chiamata a disciplinare la condizione giuridica delle chiese cattoliche nel nostro Paese appare caratterizzata da un elevato grado di complessità: impressione che trova conferma sia con riferimento al diritto canonico, nella cui prospettiva le disposizioni appositamente dedicate ai 'loca sacra' dal Codex Iuris Canonici richiedono di essere affiancate dalle indicazioni provenienti – ai rispettivi, differenti livelli – tanto dalla Conferenza Episcopale Italiana quanto dai dicasteri della Curia romana; sia nell'ottica dell'ordinamento italiano, che agli 'edifici destinati all’esercizio pubblico del culto cattolico' riserva un'attenzione specifica, emergente nella legislazione unilaterale così come in quella pattizia. A fronte di una simile eterogeneità, sono d’altra parte note le problematiche che il tempo presente pone innanzi alle esigenze di una corretta amministrazione del patrimonio ecclesiastico – spesso pure dotato di un inestimabile valore storico-artistico –, le quali si riversano sulla preservazione stessa di tali immobili. Prendendo le mosse da questi presupposti, la trattazione si propone di effettuare una lettura sistematica delle diverse fasi in cui si articola il 'ciclo vitale' di un'ipotetica chiesa cattolica, così da ricostruire organicamente e criticamente quel quadro complessivo che permetta di formulare le soluzioni più appropriate per rispondere a questioni risalenti e sfide inedite. È quindi con questo intento che, una volta definito esattamente il concetto di chiesa-edificio, vengono ripercorsi i momenti in cui si sviluppa, anche giuridicamente, la sua esistenza: dalla pianificazione al finanziamento delle nuove costruzioni, con una speciale attenzione all'apporto che può essere offerto da parte della CEI; dagli utilizzi ammessi nel diritto canonico alle tutele garantite da parte statale; dalle misure di salvaguardia ai criteri per la loro adeguata gestione, comprendenti tanto i profili relativi alla conservazione quanto quelli riguardanti la valorizzazione; dalle implicazioni di un'eventuale riduzione a uso profano fino ai requisiti dettati per la nuova destinazione dell'immobile.

The conundrum of human visceral leishmaniasis in Emilia-Romagna, Italy: are wild and peridomestic animals potential reservoirs?

Leishmaniasis is a complex parasitic disease caused by intracellular protozoans of the genus Leishmania mainly transmitted by the bite of sand flies. In Italy, leishmaniasis is caused by Leishmania infantum, responsible for the human visceral and canine leishmaniases (HVL and CanL, respectively). Within Emilia-Romagna region, Italy, recent molecular studies indicated that L. infantum strains circulating in dogs and humans are different. This suggests that an animal reservoir other than dog should be evaluated in the epidemiology of HVL in Emilia-Romagna. Therefore, the main aim of this PhD project was to investigate the role of wild and peridomestic mammals as potential animal reservoirs of L. infantum in the regional zones where HVL foci are still active, also evaluating the possible role of arthropod vectors other than phlebotomine sandflies as vectors of Leishmania spp. in the sylvatic cycle of the protozoa. Overall, 206 specimens of different animal species (roe deer, rats, mice, badgers, hares, polecats, foxes, beech martens, bank voles, hedgehogs, and shrews), collected in Emilia-Romagna were screened for Leishmania with a real-time PCR, revealing a prevalence of 33% for roe deer (first report in this species). Positivity was also found in brown rats (10.6%), black rats (13.1%), mice (10%), badgers (25%), hedgehogs (80%) and bank voles (11%). To distinguish the two strains of L. infantum circulating in Emilia-Romagna, a nested PCR protocol optimized for animal tissues was developed, demonstrating that over 90% of L. infantum infections in roe deer were due to the strain isolated from humans and suggesting their possible role as reservoirs in the study area. Furthermore, the presence of Leishmania kDNA was detected in unfed larvae, nymphs and males of questing Ixodes ricinus ticks collected in regional parks of Emilia-Romagna suggesting their possible role in the transmission of L. infantum in a sylvatic or rural cycle.