AIM To investigate the effects of Korea red ginseng (KRG) on the cerebral perfusion rate in the rats and the generation of superoxide anion in the endothelial cells. METHODS The cerebral perfusion rate was measured using laser-doppler flowmetry before and after the administration of crude saponin (CS) and saponin-free fraction (SFF) of KRG in the anesthetized rats. The superoxide generation w...

This paper presents an algorithm for tracking individual targets in high density crowd scenes containing hundreds of people. Tracking in such a scene is extremely challenging due to the small number of pixels on the target, appearance ambiguity resulting from the dense packing, and severe inter-object occlusions. The novel tracking algorithm, which is outlined in this paper, will overcome these...

Laser Chemical Vapor Deposition (LCVD) is a promising rapid prototyping and manufacturing process that deposits metals and ceramics by local heating of a substrate with a laser. Even though many LCVD process planning characteristics are shared with those of more common Solid Freeform Fabrication (SFF) technologies, LCVD process planning requires new efforts due to its unique characteristics. Un...

Soybean oil-based composites are prepared by the solid freeforming fabrication (SFF) method. Epoxidized soybean oil is solidified with a gelling agent, and composites are formed by fiber reinforcement. Glass, carbon, and mineral fibers are used in the formulations. The type of fiber and degree of fiber alignments affect the properties of the composites. In addition, the effects of curing agents...

Solid Freeform Fabrication (SFF) processes " rapidly " create three dimensional shapes of arbitrary complex geometries by incremental material deposition of 2 1 / 2 dimensional layers. Automated planning and execution of the fabrication process is possible, and the need for part-specific tooling or fixturing is eliminated. However, there are inherent limitations in the resulting surface quality...

Our approach to cartilage tissue-engineering scaffolds combines image-based design and solid free-form (SFF) fabrication to create load-bearing constructs with user-defined parameters. In this study, 3-dimensional scaffolds with cubic and ellipsoidal pore architecture were fabricated using poly(propylene fumarate) (PPF). To increase seeding efficiency and cellular retention, hydrogels were used...

A bstract We study the late time behavior of n -point spectral form factors (SFFs) in two-dimensional Witten-Kontsevich topological gravity, which includes both Airy and JT gravities as special cases. This is conducted small ħ expansion, where $$ \hbar \sim {e}^{-1/{G}_{\textrm{N}}} ħ ∼ <mml:m...