Over the last decade anticoagulants, such as dabigatran and rivaroxaban, have been developed and have shown superiority compared to warfarin for preventing stroke in patients with nonvalvular AF in large randomized trials. In addition, on account of the risk of thrombus formation Talazoparib price in the left atrial appendage (LAA), many nonpharmacologic approaches have been developed to reduce stroke risk in patients with AF who are not candidates for anticoagulant therapy. Surgical, epicardial, and endovascular techniques for LAA closure are being investigated currently. Both novel pharmacotherapy and nonpharmacologic
approaches for stroke prevention will be detailed in this review. (PACE 2012;XX:111)”
“We present a theoretical STAT inhibitor analysis of liquid viscosity sensors using ZnO and AlN thin film bulk acoustic wave resonators (FBARs) with tilted polar c-axis orientations. Besides the thickness longitudinal mode, the tilted c-axis
orientation induces thickness shear mode in the resonator, which allows resonators operated in liquid medium without significant damping for sensory application. The equation for predicting electric impedance of shear mode film bulk acoustic wave resonators (FBARs) with a viscous liquid loading was derived from the basic piezoelectric constitutive equations. The viscosity sensitivity of shear mode ZnO and AlN resonators was achieved by calculation of resonant frequency shift due to viscous liquid loading. In the simulation, it is assumed that all the resonators have 2 mu m thickness and 300 mu m x 300 mu m electrode area; three different liquids (water, acetone, and olive oil) were chosen as the liquid loadings; and different tilt c-axis angles for both
ZnO FBARs and AlN FBARs have been examined. It was found that the sensitivities of shear mode resonators to the three liquid loading are very close, and do not change much with the c-axis tilt angle with a value rang from 0.91e-3 to 0.97e-3 (kg m(-3) Pa.S)(-0.5) for ZnO FBARs and from 1.12e-3 to 1.13 e-3 (kg m(-3) Pa.S)(-0.5) for AlN FBARs. When the resonator’s mechanical quality factor (Q) is changed from 50 to 10 000, viscosity sensitivities are almost same. However, Q has a great effect on resonator impedance; and if Q is too low or the viscosity of the https://www.selleckchem.com/products/pifithrin-alpha.html liquid is high, the maximum phase angle of the resonator will be less than 0, which makes excitation of the oscillation difficult if an oscillator circuit is used for sensor measurement. The results can be used for design and application of ZnO or AlN FBARs to monitor liquid viscosity. (C) 2011 American Institute of Physics. [doi:10.1063/1.3657781]“
“Identification and susceptibility to 8 selected antimicrobial agents of Klebsiella and Enterobacter bacterial species was studied in 15 marketed meat samples (chicken, turkey-hen, beef, sheep, pig, dromedary, ostrich, and fish).