In this thesis, the author, who participated in the Battle of the Bulge, recreates the story of the battle.

Orientador: Michael McDonald Hall / Dissertação (mestrado)-Universidade Estadual de Campinas, Instituto de Filosofia e Ciencias Humanas / Made available in DSpace on 2018-07-13T21:15:40Z (GMT). No. of bitstreams: 1 Duarte_ReginaHorta_M.pdf: 4542564 bytes, checksum: 3047f83fc85d054550fd0edbe4aac486 (MD5) Previous issue date: 1988 / Resumo: Não informado / Abstract: Not informed / Mestrado / Mestre em História

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This investigation was started at the suggestion of Dr. P. C. Scherer who suggested that a film prepared from a cellulose xanthate, in which the fiber form had been destroyed by some action other than by dilute alkali, should have interesting properties. The possibilities of such a material might be much greater if the destruction of the fiber form were brought about by a kneading action. This investigation was purely a qualitative one and no attempt has been made to test any of the products other than by appearance and general properties. The main object was that of finding ways and means of handling the material in an attempt to prepare a product of some strength and plasticity. The results obtained in all of the preceding experiments emphasize the difficulty which is encountered in the attempt to plasticize a cellulose xanthate and the removing of the salts formed in the xanthate formation. The removal of the salts in the water treatment (B) required large amounts of water which also seemed to remove the plasticizer. Some of the plasticizers were soluble in alkaline solutions and in the dissolving out of the salts, the dissolved salts caused high causticity, thus removing the plasticizer also. The acid-treated samples (A) and (C) required from three to four hours to completely dissolve the salts present in the sample. This treatment probably caused a high degree of degradation since all of the samples were brittle and had less strength than the water-treated samples. Since the results of the investigation are all negative in so far as the main object was concerned, it is concluded that a plasticized cellulose cannot be obtained from. cellulose xanthate using the plasticizers and methods set forth in this investigation. / M.S.

Batch inoculation of legume seeds by commercial companies would remedy many of the difficulties encountered in getting proper and uniform inoculation by all planters. From the results of this investigation, which was to test the feasibility of commercial inoculation, the following statements appear to be justified. 1. Inoculated <i>Rhizobia</i> may remain on their specific legume seed when stored at 5°C at least 11 months in numbers greatly exceeding those required for good nodulation. 2. Sterilization of the seed before inoculation was not necessary in the experiment because of the low total organism count on the seed and because precautions were taken to check the identification of the test organisms. 3. Those treated legume seeds stored at 5°C had greater numbers of viable <i>Rhizobia</i> at 2, 3, 4, 5, and 6 months than the same treatments stored at room temperature for the same length of time. 4. It appeared that the amount of moisture present during storage is an important factor in the survival of the organisms regardless of storage temperature. 5. The <i>Rhizobia</i> on seeds inoculated with a suspension of the organisms in one per cent gum tragacanth solution withstood the desiccation and storage to a higher degree than organisms inoculated onto the seed suspended only in a water medium. 6. In the third month microscopic colonies ranging from 0.05mm to 0.15mm were observed on the various plates of each treatment. The significance of these small colonies is not known. 7. When the stored inoculated seed was sprouted and grown under otherwise sterile conditions, it was found that although the average number of organisms per seed varied considerably for the various seed treatments, there was no significant difference between the average nodules produced per plant for the same treatments. The results of this thesis definitely indicate the feasibility of commercial inoculation of legume seed. It would be necessary, however, to work out certain details previously discussed in this paper before such inoculation could be attempted commercially. / Master of Science

This study was planned to allow nursery school children to select and paint at easels with any of three colors, red, blue and yellow. The specific purpose of the investigation was to discover color preference based on: 1. The predominant color of the finished painting. 2. The order of colors selected in the painting process. 3. The number of times a color is selected during the rendering of each painting 4. Interactions between a. Order of choice of color and age b. Order of choice of color and sex c. Order of choice of color, sex, and age. The studies of various investigators agree only in part and disagree entirely at some points. Jastrow found that boys preferred blue and girls preferred red, whereas Grath states almost the reverse, that boys preferred red more than girls, and that girls preferred orange more than boys. Fiege reports that boys preferred black and brown more than girls. / M.S.