A novel and efficient ultrasonic assisted-reflux synergistic extraction (UARSE) method for extracting camptothecin (CPT) and betulinic acid (BA) from Camptotheca acuminata Decne. fruits has been developed in this study. The advantages of the ultrasonic and reflux extraction methods have been combined in the UARSE method and used to extract CPT and BA for the first time. The parameters influenci...

Ultrasonication has been used to accelerate chemical reactions. It would be ideal if ultrasonication-assisted chemical reactions could be monitored by suitable detection tools such as mass spectrometry in real time. It would be helpful to clarify reaction intermediates/products and to have a better understanding of reaction mechanism. In this work, we developed a system for ultrasonication-assi...

swimming C. elegans 3 4 Nikhil Srivastava (1), Damon A. Clark (1), Aravinthan D.T. Samuel (1) 5 6 Department of Physics and Center for Brain Science, Harvard University, Cambridge, 7 MA 8 9 Running Head: Turns in swimming worms 10 11 Corresponding author: 12 Aravinthan Samuel 13 17 Oxford Street 14 Cambridge, MA 02138 15 e-mail: [email protected] 16 17 18 19 Articles in PresS. J Neurop...

Abstract Even if titanium alloys are widely used for biomedical applications, the tendency they show to wear is a matter of concern their durability. In this research work, Ultrasonic Vibration Turning (UVT) was generate texturized surfaces on Ti6Al4V cylinders improving performances. To prove that, in vitro tests were performed, during which UVT-ed made slide against polyethylene disks replica...