Rotor-bearing dynamic research on an E-type gas turbine-generator set
In this paper, every rotor in the shafting of an E-type gas turbine-generator set is simplified for numerical simulation. Finite element analysis on lateral critical speed, unbalance response and stability is carried out systematically. The simplified model and the conclusions would provide a reference for designing another similar type gas turbine-generator set.
Investigation on the Vibration Characteristics of the Shafting for a Gas-steam Combined Cycle Units
In this paper,the vibration characteristics of the shafting for a gas-steam combined cycle Units were studied.First,rotors were modeled,then the bending critical speeds and unbalance response of the shafting system were calculated by finite element model.The torsional vibration natural frequencies and two-phase short circuit response of the shafting were calculated by transfer matrix method at the same time.Finally the shafting vibration safety was also analysed.
Adsorption of immunoglobulin Y in supermacroporous continuous cryogel with immobilized Cu(2+) ions.
The influence of temperature, pH and ionic strength on the adsorption of Immunoglobulin Y (IgY) in IDA-Cu(2+) cryogel system was studied by batch equilibrium measurements. The adsorptive equilibrium data were obtained at 17 and 27°C, pH 5.0 and 6.5, and at ionic strength of 50 and 200mmolL(-1) NaCl. Langmuir, Freundlich and Langmuir-Freundlich models were fitted to equilibrium data, while the enthalpy of adsorption of IgY in IDA-Cu(2+) cryogel system was calculated through Van't Hoff analysis. The binding of IgY on cryogel was stronger at 27°C and lowest pH and ionic strength values, with apparent maximum adsorption capacity of 27mgg(-1). The adsorption of protein in the resin was spontaneous in all analyzed cases. The results provide valuable information to enable the improvement of IgY purification processes.