Cycloartane triterpenes from Juncus effusus

A new triterpene, cycloart-23Z-enfe-3β,25-diol and other oxygenated cycloartanes have been isolated from Juncus effusus. The configurations at C-24 of the epimeric 24,25-epoxycycloartan-3β-ols, cycloart-25-ene-3β,24-diols and cycloartane-3β,24,25-triols have been attributed on the basis of chemical correlations. The 1H and 13C NMR chemical shifts of the 24R- and 24S-stereomers are also reported. © 1994

Pneumatic solution for multiple sample endoscope

The paper presents an innovative and original solution of a pneumatic micro forceps for multiple sample Gastro Intestinal (GI) endoscopy. The new device is based on the gastroenterologists requirements and wants to be a solution for shortening the operation time, for increasing the number and the quality of collected tissue samples by guaranteeing a good sample dimension and orientation, and for an overall cost reduction. In fact, the use of biopsy tests to sample tissue and investigate the presence of diseases in human body is considerably increased in the last years. The research is developed in close contact between medical doctors and engineers so to understand the GI endoscopy needs, identify new solutions, develop only feasible ideas and end up with a biopsy micro forceps prototype