1000 resultados para microfilm


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Reel 1. E.J. Palmer's Grimsby illustrated; Merritton advance; The Evening review; Niagara Falls evening review; The academy; St. Catharines constitutional; St. Catharines daily news; St. Catharines daily standard; St. Catharines daily times; St. Catharines evening journal; St. Catharines evening star. -- Reel 2. St. Catharines evening star. -- Reel 3. St. Catharines evening star. -- Reel 4. St. Catharines evening star; St. Catharines gazette; St. Catharines journal; St. Catharines semi-weekly post; St. Catharines star journal; St. Catharines weekly news; St. Catharines weekly star; St. Catharines women's patriotic journal; St. Catharines women's standard; Welland Canadian farmer supplement; Welland Canadian farmer and grange record; Welland Canal works; Welland telegraph extra; Welland telegraph; Welland tribune and telegraph. -- Reel 5. Beamsville express; Vineland Jordan post; Grimsby independent; Haldimand advocate; Haldimand tribune; Niagara onghiara; Smithville pioneer; The Irish Canadian. -- Reel 7. St. Catharines daily times. -- Reel 8. St. Catharines daily times. -- Reel 9. St. Catharines daily times. -- Reel 10. The Monck reform press; Herald (Fonthill); Independent (Grimsby); Beamsville express; Post express (Lincoln); Jordan post (Vineland); The gleaner and Niagara newspaper; Niagara advance; Pelham herald; Port Colborne news; Farmers' journal and Welland Canal intelligencer; Welland tribune; Welland Tribune; Welland tribune and telegraph; Evening tribune (Welland Ship Canal, centenary issue).

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Cover title: Einstein (Alfred) mss. at Smith College : a checklist & index.

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Mode of access: Internet.

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"Conducted under ARDC Research and Development project 2079."

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Mode of access: Internet.

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"References": p. 30.

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Includes index.

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In recent years culture has become one of the most studied topics in project management research. Some studies have investigated the influence of culture at different levels – such as national culture, industry culture, organisational culture and professional culture. As a project-based industry, the construction industry needs to have more insight concerning cultural issues at the project level and their influence on the performance of construction projects. Few studies, however, have focused on culture at the project level. This paper uses a questionnaire survey to determine the perceptions of Chinese contractors about the impact of project culture on the performance of local construction projects. This is augmented by a series of in-depth interviews with senior executive managers in the industry. The findings indicate that specific project culture does contribute significantly towards project outcomes. In particular, goal orientation and flexibility, as two dimensions of project culture, have a negative statistical correlation with perceived satisfaction of the process, commercial success, future business opportunities, lessons learnt from the project, satisfaction with the relationships, and overall performance. This paper also indicates that the affordability of developing an appropriate project culture is a major concern for industry practitioners.

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Tissue engineering allows the design of functionally active cells within supportive bio-scaffolds to promote the development of new tissues such as cartilage and bone for the restoration of pathologically altered tissues. However, all bone tissue engineering applications are limited by a shortage of stem cells. The adult bone marrow stroma contains a subset of nonhematopoietic cells referred to as bone marrow mesenchymal stem cells (BMSCs). BMSCs are of interest because they are easily isolated from a small aspirate of bone marrow and readily generate single- cell-derived colonies. These cells have the capacity to undergo extensive replication in an undifferentiated state ex vivo. In addition, BMSCs have the potential to develop either in vitro or in vivo into distinct mesenchymal tissues, including bone, cartilage, fat, tendon, muscle, and marrow stroma. Thus, BMSCs are an attractive cell source for tissue engineering approaches. However, BMSCs are not homo- geneous and the quantity of stem cells decreases in the bone marrow in aged population. A sequential loss of lineage differentiation potential has been found in the mixed culture of bone marrow stromal cells due to a heterogenous popu- lation. Therefore, a number of studies have proposed that homogenous bone marrow stem cells can be generated from clonal culture of bone marrow cells and that BMSC clones have the greatest potential for the application of bone regeneration in vivo

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Recent developments in technology, globalization, and consumer activism have challenged the "broadcasting model" of natonally bounded, vertically integrated, monopolistic, expert-paradigm media industries, dedicated to supplying leisure entertainment to more or less passive consumers. Instead, attention has turned to globally traded formats, social network markets, consumer-created content, multiplatform "publication," and a semiotic long tail where niche representations can be as valuable as blockbusters. Such chenges are just as much a challenge to education as they are to business models. And education, both formal and informal, is a dynamic agent in these processes, participation, and creative content require a rethink of "studies" just as much as of "media."

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A microgrid can span over a large area, especially in rural townships. In such cases, the distributed generators (DGs) must be controlled in a decentralized fashion, based on the locally available measurements. The main concerns are control of system voltage magnitude and frequency, which can either lead to system instability or voltage collapse. In this chapter, the operational challenges of load frequency control in a microgrid are discussed and few methods are proposed to meet these challenges. In particular, issues of power sharing, power quality and system stability are addressed, when the system operates under decentralized control. The main focus of this chapter is to provide solutions to improve the system performance in different situations. The scenarios considered are (a) when the system stability margin is low, (b) when the line impedance has a high R to X ratio, (c) when the system contains unbalanced and/or distorted loads. Also a scheme is proposed in which a microgrid can be frequency isolated from a utility grid while being capable of bidirectional power transfer. In all these cases, the use of angle droop in converter interfaced DGs is adopted. It has been shown that this results in a more responsive control action compared to the traditional frequency based droop control.

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We present a theoretical model describing a plasma-assisted growth of carbon nanofibers (CNFs), which involves two competing channels of carbon incorporation into stacked graphene sheets: via surface diffusion and through the bulk of the catalyst particle (on the top of the nanofiber), accounting for a range of ion- and radical-assisted processes on the catalyst surface. Using this model, it is found that at low surface temperatures, Ts, the CNF growth is indeed controlled by surface diffusion, thus quantifying the semiempirical conclusions of earlier experiments. On the other hand, both the surface and bulk diffusion channels provide a comparable supply of carbon atoms to the stacked graphene sheets at elevated synthesis temperatures. It is also shown that at low Ts, insufficient for effective catalytic precursor decomposition, the plasma ions play a key role in the production of carbon atoms on the catalyst surface. The model is used to compute the growth rates for the two extreme cases of thermal and plasma-enhanced chemical vapor deposition of CNFs. More importantly, these results quantify and explain a number of observations and semiempirical conclusions of earlier experiments.