Biphenyl(Biph-) containing 1-alkynes (3 and 4) and their polymers (1 and 2) with varying bridge groups and spacer lengths were synthesized and the effects of the structural variation on their properties, especially their mesomorphism and photoluminescence behaviors, were studied. The acetylene monomers 3(3) [HCtC(CH2)3O-Biph-OCO(CH2)10CH3] and 4(m) [HCtC(CH2)mOCO-Biph-OCO(CH2)10CH3, m ) 3, 4] w...

A new bi-objective genetic programming (BioGP) technique has been developed for meta-modeling and applied in a chromatographic separation process using a simulated moving bed (SMB) process. The BioGP technique initially minimizes training error through a single objective optimization procedure and then a trade-off between complexity and accuracy is worked out through a genetic algorithm based b...

The simulated moving bed (SMB) technology, first conceived for large bulk-scale separations in the petrochemical industry, has found increasingly new applications in the pharmaceutical industry. Among these, the separation of fine chemicals has been the subject of considerable study and research. This work presents the modeling, simulation and design of the operation of a SMB plant in order to ...

The multiobjecti®e optimization of continuous countercurrent chromatography sepa( ) ration units, such as simulated mo®ing bed SMB and Varicol, is considered. The Varicol system is based on a nonsynchronous shift of the inlet and outlet ports instead of the synchronous one used in the SMB technology. The optimization problem is complicated by the relati®e large number of decision ®ariables, inc...

In this paper, a new superconducting flywheel energy storage system is proposed, whose concept different from other systems. The composed of radial-type magnetic bearing (SMB), an induction motor, and some positioning actuators. SMB stator rotor. rotor suspended by the stator, one end fixed to stable heavy base. Free-run experiments in case unfixed are performed. natural rotation decay curve, d...

The performance of the simulated moving bed (SMB) technology and its modification, the Varicol process, was optimized using an experimentally verified model for the enantioseparation of SB-553261 racemate. Single and multiobjective optimizations have been carried out for both existing as well as design stage and their efficiencies were compared. The optimization problem involves a relatively la...

Induction of the urokinase type plasminogen activator receptor (uPAR) promotes cell adhesion through its interaction with vitronectin (VN) in the extracellular matrix, and facilitates cell migration and invasion by localizing uPA to the cell surface. We provide evidence that this balance between cell adhesion and cell detachment is governed by PA inhibitor-1 (PAI-1). First, we demonstrate that ...

This paper presents an analytical method to facilitate design of a spherical magnetic bearing (SMB) for a multi-DOF rotational stage. Both passive and active regulations of the SMB are considered. We formulate the SMB dynamic model along with the method of computing the magnetic force and torque required to null any deviation of the rotor, which requires solving the magnetic field. For this, we...

ABSTRACT The rational use of water while considering the increases in food production is a great challenge for agriculture currently. aim present study was to evaluate soil properties rice paddy areas under different management systems. For this, cultivars BRS Tropical and IRGA 424 were grown following treatments: M1: Intermittent flooding; M2: flooding, followed by continuous M3: Continuous in...