985 resultados para 1452-1519. Last Supper -- Influence -- exhibitions


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The influence of uniaxial stress upon three types of imperfections occurring in the alkali halide crystal lattice has been investigated. The imperfections are the interstitial atom, the interstitial ion, and the negative ion vacancy. The interstitial atom, or H center, is a paraelastic defect which assumes a preferential crystal orientation in the field of an external mechanical stress. From the results of the reorientation kinetics - studies, it was possible to show that H centers are not stable in the KBr crystal lattice above 2SoK. At temperatures higher than 2SoK, the H centers are transformed into two new paraelastic defects, H(ii) and H(iii), possessing the same optical absorption band as the H center but differing both from the H' center and from each other in their reorientation kinetics. A study of the wavelength dependence of the H, H(ii), and VI (Na+) centers s~owed the 'existence of three similar-polarized transitions for each of these defects. One of these transitions, located at 230 run for all of the defects studied, was determined to be too high in energy to be explained by the simple X2 - level scheme. In addition, a comparison of various properties of the four defects indicates that the last three can be described as perturbed H centers. Dichroism measurements, performed as a function of temperature and wavelengt, h on the 230-nm I band in KBr, showed this band to be a composite of a band at 234 nm due to the I center and a band at 230 nm attributed to the H center. The I center dichroism was isolated and was observed under various experimental conditions. The results of these observations are consistent with a body-centered model for the I center in which the I-center absorption band is attributed to the excitation of a p-like electron on the interstitial Br- ion. Similar measurements were also perfonned on the a band in KI. The a-band dichroism measurements were found to be consistent with an electronic transition from an s-like ground state to a p-like excited state, indicating that the a center is best described as a quasi-molecule.

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Over the course of his career, Ludwig van Beethoven (1770–1827) admired and befriended many violin virtuosos. In addition to being renowned performers, many of these virtuosos were prolific composers in their own right. Through their own compositions, interpretive style and new technical contributions, they inspired some of Beethoven’s most beloved violin works. This dissertation places a selection of Beethoven’s violin compositions in historical and stylistic context through an examination of related compositions by Giovanni Battista Viotti (1755–1824), Pierre Rode (1774–1830) and Franz Clement (1780–1842). The works of these violin virtuosos have been presented along with those of Beethoven in a three-part recital series designed to reveal the compositional, technical and artistic influences of each virtuoso. Viotti’s Violin Concerto No. 2 in E major and Rode’s Violin Concerto No. 10 in B minor serve as examples from the French violin concerto genre, and demonstrate compositional and stylistic idioms that affected Beethoven’s own compositions. Through their official dedications, Beethoven’s last two violin sonatas, the Op. 47, or Kreutzer, in A major, dedicated to Rodolphe Kreutzer, and Op. 96 in G major, dedicated to Pierre Rode, show the composer’s reverence for these great artistic personalities. Beethoven originally dedicated his Violin Concerto in D major, Op. 61, to Franz Clement. This work displays striking similarities to Clement’s own Violin Concerto in D major, which suggests that the two men had a close working relationship and great respect for one another. The first recital was performed in Ulrich Recital Hall; the second and third recitals were performed in Gildenhorn Recital Hall at the University of Maryland. All three performances were collaborations with pianist, Hsiang-Ling Hsiao. A Recording of the first program can be found in the Digital Repository at the University of Maryland (DRUM). Recordings of the second and third recitals can be accessed at the University of Maryland Hornbake Library.

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Suburban lifestyle is popular among American families, although it has been criticized for encouraging automobile use through longer commutes, causing heavy traffic congestion, and destroying open spaces (Handy, 2005). It is a serious concern that people living in low-density suburban areas suffer from high automobile dependency and lower rates of daily physical activity, both of which result in social, environmental and health-related costs. In response to such concerns, researchers have investigated the inter-relationships between urban land-use pattern and travel behavior within the last few decades and suggested that land-use planning can play a significant role in changing travel behavior in the long-term. However, debates regarding the magnitude and efficiency of the effects of land-use on travel patterns have been contentious over the years. Changes in built-environment patterns is potentially considered a long-term panacea for automobile dependency and traffic congestion, despite some researchers arguing that the effects of land-use on travel behavior are minor, if any. It is still not clear why the estimated impact is different in urban areas and how effective a proposed land-use change/policy is in changing certain travel behavior. This knowledge gap has made it difficult for decision-makers to evaluate land-use plans and policies. In addition, little is known about the influence of the large-scale built environment. In the present dissertation, advanced spatial-statistical tools have been employed to better understand and analyze these impacts at different scales, along with analyzing transit-oriented development policy at both small and large scales. The objective of this research is to: (1) develop scalable and consistent measures of the overall physical form of metropolitan areas; (2) re-examine the effects of built-environment factors at different hierarchical scales on travel behavior, and, in particular, on vehicle miles traveled (VMT) and car ownership; and (3) investigate the effects of transit-oriented development on travel behavior. The findings show that changes in built-environment at both local and regional levels could be very influential in changing travel behavior. Specifically, the promotion of compact, mixed-use built environment with well-connected street networks reduces VMT and car ownership, resulting in less traffic congestion, air pollution, and energy consumption.

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This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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As células do corpo gorduroso de Pachycondyla (=Neoponera) villosa distribuem-se como uma única camada entre a cutícula e o trato digestivo, formando um conjunto de células agrupadas e recobertas por uma fina membrana. Não foram identificados tipos celulares distintos por meio da ultramorfologia, porém a histologia revelou três tipos celulares distintos: os trofócitos, mais abundantes, as células de urato, distribuídas por entre os trofócitos, e os enócitos, menos abundantes que os demais. Os enócitos são comumente observados próximos da cutícula. Histoquimicamente, os trofócitos apresentaram reação positiva para proteínas básicas no núcleo e no citoplasma e reação fortemente positiva nos grânulos citoplasmáticos. O teste para carboidratos foi fortemente positivo em todo o citoplasma, enquanto para os lipídeos observou-se reação positiva nas vesículas citoplasmáticas. em relação às células de urato, estas apresentaram reação positiva para proteínas básicas no núcleo e citoplasma, por entre as vesículas. Essas células não apresentaram reação para o teste de PAS e Sudan Black B. Quanto aos enócitos, estes apresentaram citoplasma fracamente positivo ao PAS e fortemente positivo ao Sudan Black B e para o azul de bromofenol.

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Este estudo avaliou o efeito da restrição alimentar e realimentação na reprodução de fêmeas e no crescimento inicial e sobrevivência de larvas de matrinxã, Brycon amazonicus. Matrizes distribuídas em 8 viveiros (15 peixes/tanque) foram alimentadas diariamente (em 4 tanques - G1) e alimentados em ciclos de 3 dias de alimentação seguidos de 2 dias de restrição (em 4 tanques - G2) por 6 meses antes da desova. Na indução à desova, 57% das fêmeas no G1 e 45% no G2 desovaram. Os pesos médios dos oócitos foram 208,1 g (G1) e 131,6 g (G2), sendo os oócitos G2 menores (1,017 ± 0,003 mm) que os oócitos de G1 (1,048 ± 0,002 mm). As taxas de fertilização (71,9 ± 12,6% e 61,2 ± 13,7%) e de eclosão (61,3 ± 33,9% e 67,5 ± 23,4%) entre os G1 e G2 não diferiram. Larvas foram coletadas na eclosão e às 24, 48 e 72 horas de incubação para medida do crescimento e as restantes transferidas para aquários e amostradas 1, 5, 9 e 15 dias depois. Na transferência, as larvas G1 e G2 tinham pesos similares (1,5 ± 0,15 e 1,46 ± 0,07 mg), mas o comprimento das larvas G2 era maior (6,2 ± 0,13 e 6,7 ± 0,14 mm). Ao 9° dia, quando é recomendada a transferência dos juvenis para tanques externos, os juvenis G2 tinham peso (13,6 ± 0,26 e 18,9 ± 0,07 mg) e comprimento (11,8 ± 0,09 e 14,5 ± 0,04 mm) maiores, mas no 15º dia os juvenis G1 eram maiores em peso (90,2 ± 1,19 e 68,6 ± 0,77 mg) e comprimento (18,8 ± 0,16 e 18,5 ± 0,04 mm). Aos 15 dias, a prole das fêmeas submetidas à restrição alimentar apresentou sobrevivência mais alta que a prole das fêmeas alimentadas diariamente (24,7 ± 2,07% e 19,2 ± 1,91%). A restrição alimentar imposta às fêmeas de matrinxã, apesar de reduzir o número de fêmeas que desovaram e a quantidade de oócitos extrusados, não afetou a fertilização e eclosão das larvas e melhorou a sobrevivência final das larvas.

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This paper reports the triiodothyronine's (T-3) effects on the early growth and survival of piracanjuba (Brycon orbignyanus) produced from fertilized eggs hormone exposed The study was carried out in two phases In the first phase, eggs divided in 6 batches were Immersed in T-3 solutions 0 01, 0 05, 0 1, 0 5 ppm, 1 ppm and control (no T-3) After a 15-min immersion, eggs were transferred to incubators where larvae were kept up to 72 h after hatching Larval weight, length and yolk sac volume were determined every 12 h Sixty and 72 h after hatching, larvae exposed to 0 5 ppm T-3 were significantly heavier than the others, and those exposed to 1 ppm T-3 showed the lowest weight The yolk sac absorption was not affected In the second experimental phase, the resulting fry from the first phase were stocked into 3 boxes per treatment (5 larvae L-1) and fed with plankton, fish larvae and feed prepared in the hatchery (48% CP) in the first 3 days, plankton and feed from the 4th to the 10th day and only feed in the next (last) 5 days Fry weight, length and specific growth rate were determined at 1, 5, 10 and 15 days Survival was calculated in the last day In the 15th day, fry length did not differ among treatments but the weight of the control group was higher Higher survival in the T-3-treated groups suggested lower predation among fry The results allowed us to conclude that there was no expressive effect of T-3 on the growth, but it improved the survival of the piracanjuba progeny

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Notre mémoire porte sur la mise en valeur du patrimoine archéologique sur la côte nord du Pérou. À partir de deux études de cas, Chan Chan et Huacas de Moche, nous cherchons à faire ressortir différentes approches de mise en valeur au complexe archéologique et d’exposition au musée de site. La cité de Chan Chan aurait été la capitale de l’Empire chimor (900 à 1476 ap. J.C.) et utilisée à titre de siège pour le gouvernement, de résidence, de centre administratif et de centre religieux. Le complexe de Huaca del Sol y de la Luna aurait été la capitale de la civilisation moche (100 av. J.C. à 700 ap. J.C.) à son apogée. Il représente l’un des plus anciens centre urbain-cérémonial de la côte nord du Pérou. Le cas du Musée de site de Chan Chan présente un modèle muséographique des années 1990, tandis que le cas du Musée de site de Huacas de Moche propose une approche puisant ses concepts dans la nouvelle muséologie (2010). D’autre part, ces modèles de gestion, l’un issu du secteur public (Chan Chan) et l’autre (Huacas de Moche) émanant d’une gestion mixte ont une influence sur la manière de présenter l’archéologie au public. Le premier chapitre aborde l’histoire du développement de l’archéologie, des musées et du tourisme au Pérou. La deuxième partie de ce chapitre traite des questions liées à l’herméneutique de la culture matérielle, des questions esthétiques et de l’architecture précolombienne, ainsi que des approches de médiation. Le deuxième chapitre met en parallèle l’analyse du circuit de visite du complexe archéologique de Chan Chan et celui de Huacas de Moche. Le troisième chapitre présente l’analyse de la mise en exposition des musées de site des deux études de cas et des liens créés avec leur site archéologique. Le quatrième chapitre porte sur les formes de financement des projets de fouilles, de conservation, de restauration et de mise en valeur de l’archéologie, ainsi que des stratégies utilisées pour sa diffusion et sa mise en tourisme. Enfin, la dernière section du quatrième chapitre traite des différents moyens utilisés par chacun des complexes archéologiques et leurs musées pour intégrer la communauté locale aux projets de recherche et de mise en valeur archéologique.

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Notre mémoire porte sur la mise en valeur du patrimoine archéologique sur la côte nord du Pérou. À partir de deux études de cas, Chan Chan et Huacas de Moche, nous cherchons à faire ressortir différentes approches de mise en valeur au complexe archéologique et d’exposition au musée de site. La cité de Chan Chan aurait été la capitale de l’Empire chimor (900 à 1476 ap. J.C.) et utilisée à titre de siège pour le gouvernement, de résidence, de centre administratif et de centre religieux. Le complexe de Huaca del Sol y de la Luna aurait été la capitale de la civilisation moche (100 av. J.C. à 700 ap. J.C.) à son apogée. Il représente l’un des plus anciens centre urbain-cérémonial de la côte nord du Pérou. Le cas du Musée de site de Chan Chan présente un modèle muséographique des années 1990, tandis que le cas du Musée de site de Huacas de Moche propose une approche puisant ses concepts dans la nouvelle muséologie (2010). D’autre part, ces modèles de gestion, l’un issu du secteur public (Chan Chan) et l’autre (Huacas de Moche) émanant d’une gestion mixte ont une influence sur la manière de présenter l’archéologie au public. Le premier chapitre aborde l’histoire du développement de l’archéologie, des musées et du tourisme au Pérou. La deuxième partie de ce chapitre traite des questions liées à l’herméneutique de la culture matérielle, des questions esthétiques et de l’architecture précolombienne, ainsi que des approches de médiation. Le deuxième chapitre met en parallèle l’analyse du circuit de visite du complexe archéologique de Chan Chan et celui de Huacas de Moche. Le troisième chapitre présente l’analyse de la mise en exposition des musées de site des deux études de cas et des liens créés avec leur site archéologique. Le quatrième chapitre porte sur les formes de financement des projets de fouilles, de conservation, de restauration et de mise en valeur de l’archéologie, ainsi que des stratégies utilisées pour sa diffusion et sa mise en tourisme. Enfin, la dernière section du quatrième chapitre traite des différents moyens utilisés par chacun des complexes archéologiques et leurs musées pour intégrer la communauté locale aux projets de recherche et de mise en valeur archéologique.

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The East Asian Monsoon (EAM) is an active component of the global climate system and has a profound social and economic impact in East Asia and its surrounding countries. Its impact on regional hydrological processes may influence society through industrial water supplies, food productivity and energy use. In order to predict future rates of climate change, reliable and accurate reconstructions of regional temperature and rainfall are required from all over the world to test climate models and better predict future climate variability. Hokkaido is a region which has limited palaeo-climate data and is sensitive to climate change. Instrumental data show that the climate in Hokkaido is influenced by the East Asian Monsoon (EAM), however, instrumental data is limited to the past ~150 years. Therefore down-core climate reconstructions, prior to instrumental records, are required to provide a better understanding of the long-term behaviour of the climate drivers (e.g. the EAM, Westerlies, and teleconnections) in this region. The present study develops multi-proxy reconstructions to determine past climatic and hydrologic variability in Japan over the past 1000 years and aid in understanding the effects of the EAM and the Westerlies independently and interactively. A 250-cm long sediment core from Lake Toyoni, Hokkaido was retrieved to investigate terrestrial and aquatic input, lake temperature and hydrological changes over the past 1000-years within Lake Toyoni and its catchment using X-Ray Fluorescence (XRF) data, alkenone palaeothermometry, the molecular and hydrogen isotopic composition of higher plant waxes (δD(HPW)). Here, we conducted the first survey for alkenone biomarkers in eight lakes in the Hokkaido, Japan. We detected the occurrence of alkenones within the sediments of Lake Toyoni. We present the first lacustrine alkenone record from Japan, including genetic analysis of the alkenone producer. C37 alkenone concentrations in surface sediments are 18µg C37 g−1 of dry sediment and the dominant alkenone is C37:4. 18S rDNA analysis revealed the presence of a single alkenone producer in Lake Toyoni and thus a single calibration is used for reconstructing lake temperature based on alkenone unsaturation patterns. Temperature reconstructions over the past 1000 years suggest that lake water temperatures varies between 8 and 19°C which is in line with water temperature changes observed in the modern Lake Toyoni. The alkenone-based temperature reconstruction provides evidence for the variability of the EAM over the past 1000 years. The δD(HPW) suggest that the large fluctuations (∼40‰) represent changes in temperature and source precipitation in this region, which is ultimately controlled by the EAM system and therefore a proxy for the EAM system. In order to complement the biomarker reconstructions, the XRF data strengthen the lake temperature and hydrological reconstructions by providing information on past productivity, which is controlled by the East Asian Summer monsoon (EASM) and wind input into Lake Toyoni, which is controlled by the East Asian Winter Monsoon (EAWM) and the Westerlies. By combining the data generated from XRF, alkenone palaeothermometry and the δD(HPW) reconstructions, we provide valuable information on the EAM and the Westerlies, including; the timing of intensification and weakening, the teleconnections influencing them and the relationship between them. During the Medieval Warm Period (MWP), we find that the EASM dominated and the EAWM was suppressed, whereas, during the Little Ice Age (LIA), the influence of the EAWM dominated with time periods of increased EASM and Westerlies intensification. The El Niño Southern Oscillation (ENSO) significantly influenced the EAM; a strong EASM occurred during El Niño conditions and a strong EAWM occurred during La Niña. The North Atlantic Oscillation, on the other hand, was a key driver of the Westerlies intensification; strengthening of the Westerlies during a positive NAO phase and weakening of the Westerlies during a negative NAO phase. A key finding from this study is that our data support an anti-phase relationship between the EASM and the EAWM (e.g. the intensification of the EASM and weakening of the EAWM and vice versa) and that the EAWM and the Westerlies vary independently from each other, rather than coincide as previously suggested in other studies.

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Lignocelulose é o componente mais abundante do meio ambiente e recurso orgânico renovável no solo. Alguns fungos filamentosos têm desenvolvido a habilidade de degradar e utilizar celulose, hemicelulose e lignina como fonte de energia. O objetivo deste trabalho foi analisar o efeito de três fontes de nitrogênio (sulfato de amônio, nitrato de potássio e farelo de soja) na atividade enzimática de Lentinula edodes EF 50 utilizando como substrato serragem de E. benthamii. Foi aplicado um planejamento experimental de mistura com três repetições no ponto central constituído de sete tratamentos (T) de iguais concentrações em nitrogênio de sulfato de amônia, nitrato de potássio e farinha de soja cozida. Foram determinadas a atividade enzimática da avicelase, carboximetilcelulase, β-glicosidase, xilanases e manganês peroxidase. Foram avaliados o teor de umidade, pH, atividade de água (aw) e análise qualitativa do crescimento micelial em 8 tempos de cultivo. Os resultados mostraram efeito negativo na produção das enzimas nos tratamentos com máxima concentração de sulfato de amônia e nitrato de potássio. Os tratamentos com farinha de soja cozida expressaram maiores atividades enzimáticas, nos tempos de 3, 6 e 9 dias de cultivo exceto na atividade do manganês peroxidase. A maior produção foi observada no tratamento com sulfato de amônia e farinha de soja cozida (83.86 UI.L?1) em 20 dias de cultivo.

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In the last decade, new kinds of European populist parties and movements characterized by a left wing, right wing or “eclectic” attitude have succeeded in entering in governments where they could exert a direct populist influence on their coalition partners or, conversely, become victims themselves of the influence of the institutional background. Such a scenario brought this research to formulate two questions: (i) “To what extent did populist parties succeed in influencing their government coalition partners, leading them to adopt populist rhetoric and change their policy positions?” and (ii) “Have populist parties been able to retain their populist “outside mainstream politics” identity, or have they been assimilated to mainstream parties?”. As a case study this project chose the Italian Five Star Movement. Since 2018 this eclectic populist actor has experienced three different governments first with the radical right wing populist League (2018-2019) and then with the mainstream center left Democratic Party (2019-2021). In addition to this, currently the Five Star Movement is a coalition partner of the ongoing Draghi’s government. Theoretically based on the ideological definition of populism (Mudde, 2004), on a new “revised” model of the inclusionary - exclusionary framework to classify populist parties and on a novel definition of “populist influence”,this research made use of both quantitative (bidimensional and text analysis) and qualitative methods (semi-structured interviews) and mainly focuses on the years 2017- 2020.The importance of this study is threefold. First it contributes to the study of populist influence in government in relation to the ideological attachment of the political actors involved. Second, it contributes to understand if populists in power necessarily need to tone down their anti-system character in order to survive. Third, this study introduces conceptual and methodological novelties within the study of populism and populist influence in government.

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Urbanization has grown during the last decades, with an increase in population concentrated in cities. Cities are usually relatively nature-poor, and the loss of green urban space likely leads to less contact with the natural world for urban dwellers. It is known that the natural environment could provide important advantages, and the loss of contact with this type of environment has potential negative impacts on the quality of life. The use of green urban space demonstrated stronger benefits for mental health and stress reduction. In general, exposure to green urban space is linked to a reduction in mortality rates, due to the promotion of a healthy lifestyle. Green urban space could be an optimal environment in which to perform physical activity. Undertaking regular physical activity is one of the major determinants of health. The benefits of exercise have been widely demonstrated through a wide range of studies. Benefits are linked to the treatment and prevention of most chronic and non-communicable diseases, that are not contagious, but they are usually long-lasting. Regular physical activity could reduce mental health problems, such as anxiety. The World Health Organization proposed to improve physical activity programs through the implementation of interventions in green urban spaces. Green urban space provides a safe, accessible, and attractive place to perform physical activity. All the interventions aimed to promote the practice of physical activity and to reduce sedentary behavior are important. It is well known that physical activity has several positive effects, a great amount of the population remains inactive. A good strategy could be to show people how integrated physical activity into their all-day life, for example through the use of green urban space or active commuting. The results in the present thesis showed the effectiveness of performing physical activity in a natural environment and of active commuting.

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There is great interindividual variability in the response to GH therapy. Ascertaining genetic factors can improve the accuracy of growth response predictions. Suppressor of cytokine signaling (SOCS)-2 is an intracellular negative regulator of GH receptor (GHR) signaling. The objective of the study was to assess the influence of a SOCS2 polymorphism (rs3782415) and its interactive effect with GHR exon 3 and -202 A/C IGFBP3 (rs2854744) polymorphisms on adult height of patients treated with recombinant human GH (rhGH). Genotypes were correlated with adult height data of 65 Turner syndrome (TS) and 47 GH deficiency (GHD) patients treated with rhGH, by multiple linear regressions. Generalized multifactor dimensionality reduction was used to evaluate gene-gene interactions. Baseline clinical data were indistinguishable among patients with different genotypes. Adult height SD scores of patients with at least one SOCS2 single-nucleotide polymorphism rs3782415-C were 0.7 higher than those homozygous for the T allele (P < .001). SOCS2 (P = .003), GHR-exon 3 (P= .016) and -202 A/C IGFBP3 (P = .013) polymorphisms, together with clinical factors accounted for 58% of the variability in adult height and 82% of the total height SD score gain. Patients harboring any two negative genotypes in these three different loci (homozygosity for SOCS2 T allele; the GHR exon 3 full-length allele and/or the -202C-IGFBP3 allele) were more likely to achieve an adult height at the lower quartile (odds ratio of 13.3; 95% confidence interval of 3.2-54.2, P = .0001). The SOCS2 polymorphism (rs3782415) has an influence on the adult height of children with TS and GHD after long-term rhGH therapy. Polymorphisms located in GHR, IGFBP3, and SOCS2 loci have an influence on the growth outcomes of TS and GHD patients treated with rhGH. The use of these genetic markers could identify among rhGH-treated patients those who are genetically predisposed to have less favorable outcomes.