Music\u27s Influence on Cognitive Development

Many people have disputed that music affect\u27s brain development. Often, people will challenge the idea that music can lead to an enhancement of higher brain functioning. However, it has been demonstrated, through varied use of music that people benefit from music\u27s impact on both hemispheres of the brain, which make learning easier. Through the collection of multiple resources, my research study will focus on the various benefits of music with regard to cognitive development. The action research study will be based on music integration at the elementary level and its impact on student learning and motivation. I will survey various classroom teachers to understand the involvement of music in their curriculum and music services offered to students with special needs. The goal of this research study is to investigate the relationship between music and brain growth with regard to student learning and motivation within the classroom. I hope to find a strong connection between engaging children with music at various levels and development. Also, I am hoping to find an increase in student motivation when music is integrated within the curriculum. This topic was chosen because of its impact on my childhood. I grew up with music in my home and in various classroom settings. I felt that music helped me to remember things when they were put to music. In first grade my teacher would play her guitar and we would sing songs. To this day I still remember Down by the Bay... a song about creating rhymes. I feel that this had an influence on my achievement because it always kept me thinking and learning new things keeps my brain exercised

Biodegradation of the High Explosive Hexanitrohexaazaiso-Wurtzitane (CL-20)

The aerobic biodegradability of the high explosive CL-20 by activated sludge and the white rot fungus Phanerochaete chrysosporium has been investigated. Although activated sludge is not effective in degrading CL-20 directly, it can mineralize the alkaline hydrolysis products. Phanerochaete chrysosporium degrades CL-20 in the presence of supplementary carbon and nitrogen sources. Biodegradation studies were conducted using various nutrient media under diverse conditions. Variables included the CL-20 concentration; levels of carbon (as glycerol) and ammonium sulfate and yeast extract as sources of nitrogen. Cultures that received CL-20 at the time of inoculation transformed CL-20 completely under all nutrient conditions studied. When CL-20 was added to pregrown cultures, degradation was limited. The extent of mineralization was monitored by the 14CO2 time evolution; up to 51% mineralization was achieved when the fungus was incubated with [14C]-CL-20. The kinetics of CL-20 biodegradation by Phanerochaete chrysosporium follows the logistic kinetic growth model

Master universitario di primo livello. Assistive Technology - Ausili per l'utenza ampliata

pp.86-11

EXTREME SENSITIVITY AND THE PRACTICAL IMPLICATIONS OF RISK ASSESSMENT THRESHOLDS

Traditional risk-assessment theory assumes the existence of a threshold for non-cancer health effects. However, a recent trend in environmental regulation rejects this assumption in favor of non-threshold linearity for these endpoints. This trend is driven largely by two related concepts: (1) a theoretical assumption of wide-ranging human sensitivity, and (2) inability to detect thresholds in epidemiologic models. Wide-ranging sensitivity assumes a subpopulation with extreme background vulnerability, so that even trivial environmental exposures are hazardous to someone somewhere. We use examples from the real world of clinical medicine to show that this theoretical assumption is inconsistent with the biology of mammalian systems and the realities of patient care. Using examples from particulate-matter air-pollution research, we further show that failure to reject linearity is usually driven by statistical rather than biological considerations, and that nonlinear/threshold models often have a similar or better fit than their linear counterparts. This evidence suggests the existence of practical, real-world thresholds for most chemical exposures

O Interior de ateliê de Carlos Chambelland : e a representação do ambiente de trabalho do artista

Taking as an object of study the painting Studio interior, painted by Carlos Chambelland in 1909, this article investigates the representation of the studio while taking a closer look at the artist and his work. Considering Chambelland's biographical aspects, the issue of the studio as a motif for painting and the information we gathered about the painting, we sought to understand the insertion of the work in the context in which it was carried out.Tomando como objeto de estudo o quadro Interior de ateliê, pintado por Carlos Chambelland em 1909, o presente artigo investiga a representação do ateliê enquanto lança um olhar aproximado para o artista e sua obra. Considerando aspectos biográficos de Chambelland, a questão do ateliê como motivo de pintura e as informações que reunimos sobre o quadro, buscamos compreender a inserção da obra no contexto em que foi realizada. Palavras-chaves: Pintura; Ateliê sem mestre; Carlos Chambelland; Interior de ateliê