Marcia Cristina

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The chronotropic response to acid-base alterations was studied in isolated spontaneously beating atria of rat, cat and rabbit. In the three species, atrial rate was found to be dependent on extracellular pH. Both "respiratory" and "metabolic" alterations affected chronotropism to the same extent. Decreasing pH from 7.8 led to a decrease in rate in the three(More)
Usually a single literature-suggested Z-R relationship, where Z the radar reflectivity factor and R the rain rate, is used for weather radar data interpretation. It is desirable to calculate a Z-R relationship by precipitation type to improve the accuracy of quantitative rainfall rate in case of coexistence of different precipitation types, such as, in the(More)
Contamination of medicinal plants with heavy metals as Pb and Cd can affect the growth and the essential oil production of the plants and represent a risk to those who consume as medicine. This study aimed to evaluate the effects of absorption and localization of Pb and Cd on growth, ultrastructural aspects of leaves and essential oil yield and composition(More)
Objective: Small bowel obstruction (SBO) due to gallstones (gallstone ileus) is an uncommon complication of cholelithiasis, for which there is no defined surgical procedure. The objective of this study was to perform a systematic review of the history, available image exams and clinical approach to the diagnosis and treatment of gallstone ileus. Method: We(More)
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