Abstract: The present invention provides Nelumbo extract and a method thereof. The present invention further provides a composition comprising said extract and a method for treating subject suffering from breast cancer with the composition.

Abstract: The present invention provides a method for producing calcium silicate-based bone cement and a composition produced by the method. It further provides a novel mixture for bone tissue repair.

Abstract: The present invention is related to a method for modulating expression of protein kinase C-alpha associated with proliferative diseases. The invention further relates to a screening method utilizing the association between transcription factors (MZF-1 and Elk-1) and their DNA binding element (PKC-.alpha. promoter) to identify novel anticancer agents.

Abstract: An aerosol size-selective impactor for reducing particle bounce includes a main structure, a buffering layer, and a dehydration preventing layer. This main structure with an inlet and an outlet has a central channel and a receiving cavity. There are many nozzles in the inlet. The buffering layer is filled in the receiving cavity. The dehydration preventing layer is coated on the buffering layer for reducing the dehydration of water contained in the buffering layer. So, this invention utilizes the design of the receiving cavity to receive both layers. Its accuracy is high. Its sampling time lasts longer. It can endure vibrations. This invention can yield the particle bounce effect with lower cost. And, its application scope is wide.

Abstract: An electrical wheelchair includes a vertical rotating shaft connected fixedly to a seat member and journalled on a frame of a chair body, and a worm unit for transferring rotation of a motor shaft to the rotating shaft. A wheel-controlling switch is disposed on the seat member, and is operable to rotate a driving wheel unit. A rotation-controlling switch is also disposed on the seat member, and is operable to rotate the rotating shaft and the seat member by any desired angle smaller than and equal to 360°. When the seat member rotates from a frontward position by 180°, the rotational direction of the driving wheel unit is reversed under automatic control. As such, forward and rearward movement of the wheelchair can be conducted with ease.