[Unelmointia]

Soitinnus: sello, piano.

Queratina de penas de frango: extração, caracterização e obtenção de filmes

Apresenta-se neste trabalho um processo brando de extração de queratina de penas de frango em solução aquosa contendo uréia, 2-mercaptoetanol e um surfactante (pH 9,0). Foram realizadas as determinações das massas molares, do perfil de aminoácidos e da estabilidade térmica da queratina extraída. Resultados preliminares relativos às propriedades mecânicas de filmes de queratina obtidos por casting também são apresentados. A extração proporcionou um rendimento de 94% em relação à queratina presente inicialmente nas penas secas. As massas molares dos compostos presentes na solução de queratina extraída foram determinadas por eletroforese e variaram entre 10 e 14.000 g mol-1. A termogravimetria da queratina extraída mostrou que o processo de extração não modificou a temperatura de degradação da queratina. Os filmes de queratina obtidos apresentaram propriedades que estão de acordo com dados da literatura.

Standing before a sentence : Moore’s paradox and a perspective from within language

Med avstamp i ett satsbegrepp som inspirerats av Ludwig Wittgenstein, där sats och kontext betraktas som internt förbundna och där den verkliga användningen av en sats är central för dess mening, visar avhandlingen hur filosofers olika uppfattning om den filosofiska terminologins roll och möjligheter har följder för deras sätt att uppfatta och behandla filosofiska frågeställningar. Moores paradox fungerar som testfall. Denna kända filosofiska frågeställning har diskuterats sedan 1940-talet och kretsar kring hävdandet av satsen ”Jag tror att det regnar och det regnar inte”. Problemet är att det vore märkligt för en talare att hävda satsen om sig själv: det verkar finnas ett logiskt hinder för att hävda en sats även om den är välformad, kunde vara sann och inte på ett entydigt sätt innehåller en kontradiktion. Moores paradox behandlas genom att granska några lösningsförslag (framförda av bl.a. G.E. Moore, J. L. Austin, J. Searle) och de uppfattningar om språket som de förutsätter. Genom att kontrastera dessa med ett användarperspektiv där språkets användning i meningsfulla sammanhang förväntas spela en central roll i behandlingen av paradoxen visar författaren hur också den intellektuella kontext inom vilken en filosof betraktar paradoxen spelar en avgörande roll för vilka mått som krävs för att upplösa den. Istället för att föreslå en egen lösning presenteras en behandling av paradoxen genom en diskussion och utredning av de grundvillkor som leder till att den uppstår. Här intar satsbegreppet en central plats. Avhandlingen är författad inom traditionen efter den senare Wittgenstein (närmare bestämt den gren som ansluter sig till en s.k. terapeutisk filosofisyn) men går i dialog med filosofiskt arbete som ligger utanför traditionen. Författaren strävar både till att medla mellan, sammanföra och särskilja olika temata som behandlats på ett sätt inom traditionen och på andra sätt utanför den och använder sig här av metaforen att filosofera inifrån i kontrast till utanför språket. Avhandlingens huvudsakliga bidrag är till metafilosofin genom dess fokus på filosofins metod. ------------------------------------------------------------ Mooren paradoksi on tunnettu filosofinen ongelma, josta on keskusteltu 1940-luvulta alkaen. Paradoksin keskeisenä osana esiintyy väitelause ”Uskon, että ulkona sataa, mutta ulkona ei sada”. Ongelman lähtökohta on, että olisi merkillistä jos puhuja esittäisi lauseen itseään koskevana väitteenä: väite näyttää olevan loogisesti mahdoton esittää, vaikka se on hyvinmuodostettu, mahdollisesti tosi, eikä yksiselitteisellä tavalla sisällä kontradiktiota. Tässä väitöskirjassa Mooren paradoksi esiintyy esimerkkinä filosofisesta ongelmasta, jossa mm. lausekäsitteellä on keskeinen rooli ja jonka avulla voidaan muodostella ns. kielensisäinen filosofinen näkökulma. Mooren paradoksia käsitellään tarkastelemalla muutamia ratkaisuehdotuksia (mm. G.E. Mooren, J.L. Austinin, J. Searlen esittämät) ja niitä kielikäsityksiä joita nämä ratkaisuehdotukset edellyttävät. Asettamalla vastakkain ratkaisuehdotukset ja käyttäjänäkymä, jossa kielenkäyttö mielekkäissä konteksteissa asetetaan keskeiseen asemaan paradoksin käsittelyssä, kirjoittaja osoittaa miten myös paradoksin filosofisen tarkastelun intellektuaalinen konteksti on hyväksyttävien toimenpiteiden löytämisen kannalta ratkaisevaa. Uuden ratkaisun sijaan kirjoittaja ehdottaa paradoksin terapeuttista käsittelyä: keskustelua ja selontekoa niistä perusehdoista, jotka johtavat sen syntyyn. Tässä käsittelyssä lausekäsite on keskipisteenä – erityisesti Ludwig Wittgensteinin inspiroima lausekäsitys, jossa lauseen mielekkyyden kannalta sen todellinen käyttö mielekkäässä kontekstissa on ratkaiseva tekijä. Väitöskirja liittyy myöhäisiwittgensteinilaiseen perinteeseen, johon kuuluu ns. terapeuttinen filosofiankäsitys, mutta teos keskustelee myös tradition ulkopuolisten ajattelijoiden kanssa yrittäen yhdistää, sovitella ja myös eritellä teemoja, joita käsitellään yhdellä tavalla tradition sisällä ja toisella tavalla sen ulkopuolella. Väitöskirjan pääasiallinen panos sijoittuu metafilosofiaan, koska sen mielenkiinnon kohteena ovat erityisesti filosofian menetelmät.

Informe de seguimiento No. 4 Construcción Troncales de Transmilenio Fase III

Gestión del conocimiento

Foraging ecology and parental care of common terns (Sterna hirundo) nesting in Windermere Basin, Lake Ontario

The relationships among chick feeding, size and type of prey item, and foraging time away from the brood have not been well studied in seabirds. This study investigated spatial and temporal patterns of foraging and chick-provisioning among 23 radio-tagged male common terns nesting at Hamilton Harbour, Lake Ontario during 1991 and 1992. Telemetry data were collected concurrently with behavioural observations from an elevated blind. Terns fitted with transmitters did not differ from controls with respect to either brood attendance, patterns of chick mortality, species and size distributions of prey delivered to offspring, or chick-provisioning rates. There was a clear separation of parental roles: males were primarily responsible for feeding chicks while females allocated more time to brood attendance. The prey species most commonly delivered to chicks by adults were rainbow smelt (Osmerus mordax) and alewife (A/osa pseudoharengus), followed in importance by larval fish, emerald shiner (Notropis antherinoides), salmonids, and fathead minnows (Pimepha/es prome/as). The relative proportions of various fish speCies delivered to chicks by males differed over the course of each breeding season, and there was also much variability in species composition of prey between years. Sizes of prey delivered to chicks also differed between sampling periods. The modal size of fish brought to chicks during Peak 1991 was 1.5 bill lengths, while the majority of prey in Late 1991 were small larval fish. The reverse trend occurred in 1992 when small fish were delivered to chicks predominantly during the Peak nesting period. During periods when predominantly small fish were delivered to chicks, the foraging activity of radio-tagged males was concentrated within a two kilometer radius of the colony. The observed variation in prey composition and foraging locations during the study likely reflects temporal variation in the availability of prey in the vicinity of the colony. Males delivered fish to chicks at a constant rate, while females 4 increased their feeding frequency over the first six to ten brood days. The mean length of fish delivered to chicks by adults increased significantly with increasing chick age. As a group, within each nesting period, transmittered males either foraged predominantly in the same directional bearing (north during Peak 1991, south during Late 1992), or concentrated foraging activity in the immediate vicinity of the colony (Late 1991, Peak 1992). However, individual radio-tagged males exhibited unique and predictable foraging patterns, often favouring specific locations within these areas and differing in their secondary foraging patterns. Overall, the Lake Ontario shoreline between NCB Bay" (3.5 km south of colony) and the lift bridge canal (4 km north of colony) was the foraging area used most frequently by radiotagged males during the chick-rearing period. Foraging patterns of transmittered males at Windermere Basin are similar to patterns of peak-nesting common terns, but differ from those of late-nesters, at a nearby colony (Port Colborne, Lake Erie). Differences between the foraging patterns of late-nesting terns at these colonies likely reflect differences in annual patterns of fish availability between the two locations. No relationship was found between foraging proficiency of adults and survival of offspring. Stochastic factors, such as predation by black-crowned nightherons (Nycticorax nycticorax) and adverse weather conditions during the early stages of chick rearing, may be more important determinants of common tern breeding success than parental quality or fish availability.

Father involvement in the breastfeeding process : determining contributing aspects

The importance of father involvement in the young family is increasingly evident. This research was conducted using the theory of planned behaviour to understand important aspects contributing to father invo lvement in the breastfeeding process. Eighty mothers and 65 fathers of one-year-old children completed a questionnaire regarding father involvement (FI) in breastfeeding. Measures included attitudes, subjective norms, and perceived behaviour control regarding FI and the extent to which fathers demonstrated involvement by advocating for and affIrming breastfeeding, being present during breastfeeding, providing household help, and being responsive to their partners' needs. Results suggest that mothers and fathers experience FI differently. Mothers' perceptions are motivated by intrinsic attitudinal considerations, whereas fathers' involvement is primarily motivated by the opinions of others. Interventions should focus on increasing fathers' perception of societal approval through approaches such as peer-led groups, and increasing mothers' approval through information of the value of fathers' involvement in the breastfeeding process.

An oration, delivered at Milford, N.H., March 9, 1815, occasioned by the Treaty of Peace, made and notified between Great Britain and the United States

Printed by R. Boylston

Warren Hartman fonds, 1970, 1972-1996, 1998, n.d.

Warren Hartman was born in 1942 in Toronto, Ontario. He received a B.A. in Fine Arts and Drama from Brock University in 1981 and a Masters of Arts in Humanities at the State University of New York at Buffalo in 1987. In the 1950s he did considerable work as a child-actor both in theatre and television. From 1953 to 1961 he was in the New Play Society under the direction of Dora Mavor Moore. His last two years there were spent as a scholarship student. From 1963 to 1966 he did an apprenticeship with Suzanne Mess, Head of Costume Design at The Canadian Opera Company in Toronto. In 1976 Warren attended a Master Class in Scenography at the Banff School of Fine Arts with Josef Svoboda. In the spring of 1970 Warren was a guest designer at Brock University and from 1970 to 1972 he remained at Brock as resident designer and special lecturer. During this time he was also an instructor and costume designer at Sheridan College in Oakville. It was in 1972 that he became the designer-in-residence at Brock University. From 1984 he held the position of Associate Professor at The Department of Fine Arts at Brock University until the fall of 1996. Some of the highlights of Warren’s career also include: stage managager with the Street Hat Players in Port Carling, Ontario, 1960-1961; a freelance designer for over 100 shows; costume coordinator(production manager) for the Canadian Opera Company, 1964 -1970; resident costume designer for The Canadian Opera Company, 1965- 1970; founder and artistic director of Dei Gelosi Campagnia, St.Catharines, Ontario, 1970-1973; freelance director of some thirty-five shows; co-producer for Quebec City Summer Stock Company, Quebec City, Quebec, 1975; a consultant with Alberta Culture for the Provincial Government of Alberta, 1986-1987 and associate artistic director at Theatre Network, Edmonton, Alberta, 1986-1987. Warren Hartman was the recipient of the Jean Chalmers Award for contributions to Canadian Theatre for persons 25 years of age or under, in 1965. He was a founding member of Associated Designers of Canada and was affiliated with Canadian Actors Equity. Warren Hartman died on Feb. 11, 1998 several days after suffering a massive stroke. A memorial service was held at Brock University in May of 1998 and a bursary fund was established in his name.

St. Catharines documents including mortgages, wills and declarations, 1871-1914 (not inclusive)

Most of these documents refer to a tract of land located on the intersection of King and Court Streets (part of the Lawrie plan) and Carter properties in St. Catharines Ontario. The Security Loan and Savings Company of St. Catharines existed between 1870 and 1906. Thomas Rodman Merritt was the president.

Exploring Academic (Di)stress and Help-Seeking in Faculty of Education Students

This is a study of education students’ conceptions of and experiences with academic stress and help-seeking. The study explored teacher education and Master of Education students’ academic stress by examining causes of academic stress and how these stressors affect students’ academic and university experiences. Stress-related help-seeking was also a focus of this study, and was explored using inquiries regarding where participants sought stress-related support. Additionally, exploring students’ use of the Internet for stress-related information or support was a goal of this study. These research goals were pursued using a qualitative methodology that applied grounded theory design. Consequently, data were used to develop a theory that would contribute to existing literature. Specifically, participant descriptions related to causes of and responses to academic stress aligned with Maslow’s (1954) theory of human motivation and Alderfer’s (1969) E. R. G. theory, and led to theoretical contributions that took a hierarchy of student needs and motivation into consideration.

School Board report, Bertie Township, January 13, 1848

Dexter Deverardo settled in the Niagara District around 1834. In 1842, he was elected to the District Council. He served in this position until around 1848, when he became Superintendent of Education for the Niagara District. He subsequently served as county Registrar (appointed in1852), Registrar of the Surrogate Court for Welland (1856), and served as county clerk until 1873.

Joanna E. Wood short stories, 1898-1900

Joanna Ellen Wood (1867-1927) was an acclaimed Canadian author who wrote several novels and short stories. Wood was born in Scotland, but emigrated to Canada with her family in 1869. In 1874 her father purchased a farm overlooking the Niagara River at Queenston. It is believed she was supported by her brother William, who encouraged her writing. She was based in New York City from 1887-1901, using William’s business address there to receive correspondence while she traveled or spent time in Queenston. Around 1906, Wood moved with her mother to Niagara-on-the-Lake, where she joined the Niagara Historical Society. By 1914, she was living in Buffalo, but later spent time at her sisters’ homes. It was at her sister’s home in Detroit where she suffered a stroke and died in 1927. Wood’s literary career was short-lived. She published her first novel, The Untempered Wind , in 1894, and a second novel, Judith Moore …, in 1898. Both novels received critical acclaim, and a third novel, Farden Ha', followed in 1902. Unfortunately the majority of Wood’s numerous and award-winning writings cannot be found. Her career peaked in 1901, when she was the highest paid Canadian fiction writer. For unknown reasons, her career abruptly ceased in 1902, with no further publications or mention made of her in the Canadian Magazine.

Inhibition of human lung cancer cell proliferation and survival by wine

Compounds of plant origin and food components have attracted scientific attention for use as agents for cancer prevention and treatment. Wine contains polyphenols that were shown to have anti-cancer and other health benefits. The survival pathways of Akt and extracellular signal-regulated kinase (Erk), and the tumor suppressor p53 are key modulators of cancer cell growth and survival. In this study, we examined the effects of wine on proliferation and survival of human Non-small cell lung cancer (NSCLC) cells and its effects on signaling events.