30 research outputs found
Quantitative Analysis of Aortic Valve Stenosis and Aortic Root Dimensions by Three-Dimensional Echocardiography in Patients Scheduled for Transcutaneous Aortic Valve Implantation
Full text linkTimeâIntegrated Aortic Regurgitation Index Helps Guide Balloon Postdilation During Transcatheter Aortic Valve Replacement and Predicts Survival
No full textTools and Techniques - Clinical: Fluoroscopic balloon sizing of the aortic annulus before transcatheter aortic valve replacement (TAVR) â follow the âright cusp ruleâ
No full textStandardized Minimalistic Transfemoral Transcatheter Aortic Valve Replacement (TAVR) Using the SAPIEN 3 Device: Stepwise Description, Feasibility, and Safety from a Large Consecutive Single-Center Single-Operator Cohort
No full textMetal-free perovskites for non linear optical materials
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We identify the existence of nonlinear optical (NLO) activity in a number of novel ABX3-type
metal-free perovskites, where A is a highly tuneable organic cation, B is a NH4 cation and X a
halide anion. Through systematic first-principles calculations, we identify important trends to chart
the second-harmonic generation of this class of materials. We study three perovskites MDABCO-
NH4 I3 , CNDABCO-NH4 I3 and ODABCO-NH4 I3 for use as deep-UV second-harmonic generation
materials. We identify the role of the dipole moment imparted by the organic group on the A
cation as an important parameter to tune the NLO properties of these materials. We apply this
knowledge functionalising the organic group DABCO with the highly polar cyanide CN group,
and we demonstrate a significant improvement of the NLO response in this family of materials.
These findings can accelerate the application of metal free perovskites as inexpensive, non-toxic,
earth-abundant materials for the next generation of optical communication applications.
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Outcomes After Transcatheter Aortic Valve Replacement Using a Novel Balloon-Expandable Transcatheter Heart Valve
No full textSelf-Expanding Transcatheter Aortic Valve System for Symptomatic High-Risk Patients With Severe Aortic Stenosis
No full textEstimation of cardiac output and pulmonary vascular resistance by contrast echocardiography transit time measurement: a prospective pilot study
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