<b>Detection of</b> <i>l</i>-&alpha;-<b>Santonin in</b> <i>Artemisia ramosa</i> <b>C. Sm.</b>

Staphylococcus aureus Activity Depends on RsbU inB

Smb Takes on Paclitaxel Purification

Simulated Moving Bed (SMB) chromatography is an important technology for separating chiral compounds, but it can also be used in challenging purifications to remove impurities that are structurally similar to target compounds. Bioxel Pharma, Inc. has developed and implemented a fully automated, high throughput SMB process to remove cephalomannine from paclitaxel, an active pharmaceutical ingred...

Repetitive control and optimization of SMB process

A two-tier optimizing control strategy of a simulated moving bed (SMB) process has been studied on the basis of repetitive control. Repetitive model predictive control (RMPC) of product purities is carried out in the lower tier and the optimum feed and desorbent flow rates and the length of switching period are determined in the upper tier. Both of them are based on a fundamental SMB model whic...

On BC-trees and BC-subtrees

A BC-tree (block-cutpoint-tree) is a tree (with at least two vertices) where the distance between any two leaves is even. Motivated from the study of the “core” of a graph, BC-trees provide an interesting class of trees. We consider questions related to BC-trees as an effort to make modest progress towards the understanding of this concept. Constructive algorithms are provided for BC-trees with...

Optimization of reactive SMB and Varicol systems

A comprehensive optimization study on a simulated moving bed reactor (SMBR) system is reported in this article for the direct synthesis of methyl tertiary butyl ether (MTBE) from tertiary butyl alcohol (TBA) and methanol. The applicability of the Varicol process, which is based on non-synchronous shift of the inlet and outlet ports, is explored for the first time for a reactive system. Multi-ob...