Low-flow-resistance Methacrylate-based Polymer Monolithic Column Prepared by Low-conversion Ultraviolet Photopolymerization at Low Temperature

Low-flow-resistance methacrylate-based polymer monolithic column prepared by low-conversion ultraviolet photopolymerization at low temperature.

A low-conversion poly(butyl methacrylate-co-ethylene dimethacrylate)-based polymer monolithic column was prepared by ultraviolet (UV) irradiation for a short time at a low temperature (-15°C). By UV irradiation for 2 min, the monolithic column exhibited a high permeability of 5.6 × 10(-13) m(2) and a high column efficiency of over 100000 plates m(-1). At this polymerization time, the conversi...

Low Power , Low Area , Monolithic Oversampling Digital to Analog Conversion

This thesis project examines the design of a monolithic audio-band digital-to-analog (D/A) converter with the objective of achieving a high signal-to-noise ratio, low analog die area consumption, and low static power dissipation. Issues relating to system design, digital signal processing, sigma-delta modulation, D/A topology selection, and switched-capacitor filter design are covered. The Dire...

Flutter Analysis of a Low Aspect Ratio Swept- Back Trapezoidal Wing at Low Subsonic Flow

A linear, aeroelastic analysis of a low aspect ratio swept back trapezoidal wing modeled as a cantilever plate is presented. An analytical and numerical formulation for both the aerodynamic forcing and structural response of the wing was developed. The analytical model uses a three dimensional time domain vortex lattice aerodynamic method. A Rayleigh-Ritz approach has been used to transfer equa...

Structural and mechanical properties of AFe2O4 (A = Zn, Cu0.5Zn0.5, Ni0.3Cu0.2Zn0.5) nanoparticles prepared by citrate method at low temperature

In this work, the structural and elastic moduli properties of ZnFe2O4, Zn0.5Cu0.5Fe2O4, and Ni0.3Cu0.2Zn0.5Fe2O4 ferrites prepared by the citrate method have been investigated. The structuralcharacterization of the samples is evidence for a cubic structure with Fd-3m space group. TheHalder-Wagner analysis was used to study crystallite sizes and lattice strain and also stressand energy density. ...

Lyophilizing Foot-and Mouth Disease Virus at Low Drying Temperature