A procedure is presented for colorimetric analysis of starch and cellulose at a wave length of 625 mg, using a 0.1% solution of anthrone in concentrated sulfuric acid. The method is accurate for ranges of 10 to 200 micrograms and sensitive to 2 micrograms of these substances. Because of the instability of the reagent, a known standard must be used with each set of analyses to determine the correct Beer's law constant.Color intensity studies of the effect of heat upon the reaction between anthrone reagent and starch and cellulose are presented. Spectral transmittance curves of carbohvdrate-anthrone colors prepared under different conditions are also included.
LITERATURE CITED(1) Dreywood, Roman, Ind.
The concept of meaning-making is generating excitement within the museum community, with good reason. Providing an approach to understanding visitor experiences, the paradigm illuminates the visitor's active role in creating meaning of a museum experience through the context he/she brings, influenced by the factors of self-identity, companions, and leisure motivations. As a result, visitors find personal significance within museums in a range of patterned ways that reflect basic human needs, such as the need for individualism and the need for community.The dynamics of visitor meaning-making indicate the importance of fashioning a better "fit" between people and museums in two critical areas: (1) between human meaning-making and museum methods and (2) between human needs and the purpose of museums in society. Each of these areas illuminates a promising direction for a new age of museums in which we actively support, facilitate, and enhance the many kinds of meaning possible in museums and explicitly incorporate human needs into exhibit goals and institutional missions. Examples of successful strategies are discussed.
There is a surprising lack of understanding of visitors' perspective on the experience of visiting a heritage site. Previous studies used quantitative approaches that did not shed light on visitors' perspectives, terms, and meanings. Drawing upon the tradition ofphenomenology, this exploratory study used qualitative research methods to examine college student visitors' perspectives on heritage sites they had visited. Respondents' experience was multidimensional: they emphasized activities in which they had engaged, their companions, site personnel they had encountered, and information learned during their visits. The results suggest a need for more careful site management (including the physical environment and site personnel) and changes in marketing, advertising, programming, and site missions. Further research on visitor experiences using phenomenological and qualitative approaches is needed.
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