Thuja Occidentalis
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Efeito do composto "mais vida" na ativação de macrófagos de ratos diabéticos
O objetivo deste trabalho foi avaliar a atividade funcional de macrófagos de ratos diabéticos, através da liberação do ânion superóxido, na presença do composto "mais vida". Os animais foram divididos em dois grupos, controle (N=20) e diabético (N=20). Avaliou-se a glicemia, massa corpórea e a liberação de superóxido pelos macrófagos de baço d
Rev. bras. plantas med.. Publicado em: 2012
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2. Ineficiência da Thuja occidentalis no tratamento dos poxvirus aviários
Medicações à base de Tuia (Thuja occidentalis) são comuns em tratamentos homeopáticos e fitoterápicos, na medicina humana e veterinária. Suas propriedades imunoestimulantes e antivirais são descritas e sua utilização empírica no tratamento das poxviroses aviárias é recomendada por criadores e veterinários. Para avaliar o potencial terapêutico
Ciência Rural. Publicado em: 2006-08
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3. Collapse of Water-Stress Emboli in the Tracheids of Thuja occidentalis L.
We report the kinetics of embolus formation and collapse in the tracheids of Thuja occidentalis L. stem segments. Radial wood sections were trimmed to 4 mm long paralleling the tracheids by 1 mm wide and 0.1 mm thick. They were observed under a dissecting microscope at 128x while sections were dehydrated and rehydrated. During dehydration, cavitations result
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4. A Requirement for Sucrose in Xylem Sap Flow from Dormant Maple Trees 1
The response of excised stem segments of several tree species to freezing and thawing cycles was studied. All species studied (Thuja occidentalis, Fagus grandifolia, and Betula papyrifera) except maple (Acer spp.) exuded sap while freezing and absorbed on thawing. Maple stems absorbed sap while freezing and exuded sap during the thaw only when sucrose was pr
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5. Do Woody Plants Operate Near the Point of Catastrophic Xylem Dysfunction Caused by Dynamic Water Stress? 1: Answers from a Model
We discuss the relationship between the dynamically changing tension gradients required to move water rapidly through the xylem conduits of plants and the proportion of conduits lost through embolism as a result of water tension. We consider the implications of this relationship to the water relations of trees. We have compiled quantitative data on the water