Thesis (M.S.)--University of Wisconsin--Madison, 1981. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 60-69).

Thesis--Wisconsin. / Vita. Includes bibliographical references.

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Thesis (Ph. D.)--University of Wisconsin--Madison, 1962. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Made available in DSpace on 2014-06-12T18:28:14Z (GMT). No. of bitstreams: 2 arquivo7936_1.pdf: 4336383 bytes, checksum: 9863893f81f57f80facda32a0b154428 (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2002 / Com o objetivo de estudar as características ultrassonográficas da vesícula biliar na esquistossomose mansônica e sua função motora foram avaliados 29 pacientes portadores de esquistossomose, 5 na forma hepatointestinal e 24 hepatoesplênicos, e 29 individuos sadios, sem esquistossomose. Procurou-se verificar a ocorrência de alterações do volume e da fração de ejeção da vesícula biliar e relacioná-las com o grau de fibrose hepática a intensidade da fibrose perivesicular, e os sinais ultrassonográficos de hipertensão porta, comparando-se os resultados nos três grupos estudados. A ultrassonografia foi realizada seguindo protocolos estabelecidos pela Organização Mundial da Saúde, protocolos do Cairo e Niamey, que definem o grau e padrão da fibrose hepática, os aspectos ultrassonográficos da hipertensão porta e as alterações da parede vesicular. O volume da vesícula biliar foi avaliado em jejum e apõs 30 e 60 minutos de uma refeição gordurosa padronizada segundo Damião et al, 1997, a fim de calcular a fração de ejeção. Para o cálculo do volume utilizou-se a fórmula: volume = comprimento longitudinal x transversal x anteroposterior x 0,52. Foi encontrada correlação significativa entre a espessura da parede vesicular avaliada por meio da ultrassonografia com as formas clínicas da esquistossomose. Observou-se também relação estatisticamente significativa entre a espessura da parede vesicular com o grau de fibrose hepática, havendo progressão da espessura vesicular com o aumento do grau de fibrose hepática. Não houve diferença entre o volume de jejum, volume residual e fração de ejeção da vesícula biliar entre os pacientes esquistossomóticos e os controles.Esses achados nos levam a concluir que as alterações morfológicas presentes na vesícula biliar dos pacientes esquistossomóticos não foram suficientes para comprometer a função motora da vesícula avaliada por meio da ultrassonografia

Three studies were conducted on VA mycorrhiza in Wanagama Forest Research Center, Yogyakarta, Indonesia. The first was on VA mycorrhizal status of four forest species (Acacia mangium, Acacia holosericea, Tectona grandis, and Swietenia macrophylla) plantations and nurseries of Acacia mangium and Tectona grandis. Samples from the field were only taken during the dry season, June 1988. These four six-year old forestry species were mycorrhizal. Nursery plants had higher VAM colonization than the plantation roots and both Acacia species have higher percent colonization than the other two species. Available phosphorus in calcareous soils is low and seems not to be a major contribution to the variation of VAM colonization. Potassium and sodium were more important in this case even though their role could not be determined in this study. The second study was conducted to determine VAM fungal species associated with the plant species. There were 16 different spore types belonging to the genera Glomus, (the most common found), Sclerocystis, Scutellispora, and probably Acaulospora. Type of inoculum and host compatibility were suggested as important factors in the success of pot culture study. The third study was carried out in a growth chamber to determine Acacia spp. response to single VAM fungal species and mixed species inoculum. Single species inoculum in both Acacia was observed to improve biomass and plant growth better than the mixed inoculum. Acacia mangium performed better with Glomus versiforme than did A. holosericea. Host compatibility, effectiveness of VAM spore inoculant, infectivity and environmental factors have major effects on plant growth responses. Study of tropical VAM requires further basic research, including taxonomy. Experimental procedures such as pot culture technique, type of inoculum, growth media and host plant specificity along with evaluation of appropriate soil chemical analysis also requirefurther elaboration. These types of studies are needed to understand the relationship between VAM and the environment and in the application studies in agriculture and forestry. This information is especially important in tropical countries, where little research results and limited resources, such as for fertilizers, are available. / Land and Food Systems, Faculty of / Graduate

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"June 2002" / Bibliography: leaves 179-194. / 194 leaves : ill. (col.), plates (some col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / The overall aim of the research presented in this thesis was to determine if the growth and function of external hyphae of Arbuscular Mycorrhizal (AM) fungi is affected by changes in soil pore size. / Thesis (Ph.D.)--University of Adelaide, Dept. of Soil and Water, 2002