The Life History and Control of Nemocestes incomptus (Horn), A Native Root Weevil Attacking Strawberries in Western Washington1

1966 ◽  
Vol 59 (4) ◽  
pp. 1004-1005 ◽  
Author(s):  
Paul M. Elde
Keyword(s):  
Life History ◽  
And Control ◽  
Native Root

scholarly journals Comprehensive Ex Vivo Comparison of 5 Clinically Used Conduit Configurations for Valve-Sparing Aortic Root Replacement Using a 3-Dimensional–Printed Heart Simulator

Circulation ◽  
2020 ◽  
Vol 142 (14) ◽  
pp. 1361-1373
Author(s):  
Michael J. Paulsen ◽  
Annabel M. Imbrie-Moore ◽  
Michael Baiocchi ◽  
Hanjay Wang ◽  
Camille E. Hironaka ◽  
...  
Keyword(s):  
Aortic Root ◽  
Linear Models ◽  
Ex Vivo ◽  
Aortic Root Replacement ◽  
In Series ◽  
Valve Sparing ◽  
Cusp Closing ◽  
And Control ◽  
Root Biomechanics ◽  
Native Root

Background: Many graft configurations are clinically used for valve-sparing aortic root replacement, some specifically focused on recapitulating neosinus geometry. However, the specific impact of such neosinuses on valvular and root biomechanics and the potential influence on long-term durability are unknown. Methods: Using a custom 3-dimenstional–printed heart simulator with porcine aortic roots (n=5), the anticommissural plication, Stanford modification, straight graft (SG), Uni-Graft, and Valsalva graft configurations were tested in series using an incomplete counterbalanced measures design, with the native root as a control, to mitigate ordering effects. Hemodynamic and videometric data were analyzed using linear models with conduit as the fixed effect of interest and valve as a fixed nuisance effect with post hoc pairwise testing using Tukey’s correction. Results: Hemodynamics were clinically similar between grafts and control aortic roots. Regurgitant fraction varied between grafts, with SG and Uni-Graft groups having the lowest regurgitant fractions and anticommissural plication having the highest. Root distensibility was significantly lower in SG versus both control roots and all other grafts aside from the Stanford modification ( P ≤0.01 for each). All grafts except SG had significantly higher cusp opening velocities versus native roots ( P <0.01 for each). Relative cusp opening forces were similar between SG, Uni-Graft, and control groups, whereas anticommissural plication, Stanford modification, and Valsalva grafts had significantly higher opening forces versus controls ( P <0.01). Cusp closing velocities were similar between native roots and the SG group, and were significantly lower than observed in the other conduits ( P ≤0.01 for each). Only SG and Uni-Graft groups experienced relative cusp closing forces approaching that of the native root, whereas relative forces were >5-fold higher in the anticommissural plication, Stanford modification, and Valsalva graft groups. Conclusions: In this ex vivo modeling system, clinically used valve-sparing aortic root replacement conduit configurations have comparable hemodynamics but differ in biomechanical performance, with the straight graft most closely recapitulating native aortic root biomechanics.

Life History and Control of Apion longirostre Olivier

1954 ◽  
Vol 47 (1) ◽  
pp. 181-182
Author(s):  
John T. Tattershall ◽  
Ralph H. Davidson
Keyword(s):  
Life History ◽  
And Control

White Peach Scale: Life History and Control Studies1

1973 ◽  
Vol 66 (6) ◽  
pp. 1290-1292 ◽  
Author(s):  
M. L. Bobb ◽  
J. A. Weidhaas ◽  
L. F. Ponton
Keyword(s):  
Life History ◽  
White Peach Scale ◽  
And Control

Life History and Control of Scales on Apples in North Carolina1

1953 ◽  
Vol 46 (6) ◽  
pp. 969-972
Author(s):  
George F. Turnipseed ◽  
Clyde F. Smith
Keyword(s):  
Life History ◽  
And Control
Sign in / Sign up

Export Citation Format

Share Document