Overpoling phenomenon associated with a sudden reduction of d(33) with increasing field was not evidenced.”
“We present the results of time and temperature dependent deformation of two azobenzene materials with different dipole moment during the process of surface relief grating formation. The effect of chromophore
this website orientation on grating formation in these films was studied in situ using continuous and pulselike exposure techniques at various temperatures up to the glass transition temperature of the respective polymer material. The results obtained for high dipole moment pDR1M and low dipole moment pMEA were compared in terms of the rate of the grating formation and related to the quantities as relaxation of the chromophores in the absence of the inscribing light and induced stress due to the chromophore orientation. The parameters obtained from the simulation data can be well explained considering viscoelastic material PI3K inhibitor model. The experimental findings can be explained
by assuming the interaction of azochromophores with polarized light leading to the orientation anisotropy of the azobenzene macromolecules, thereby generating a mechanical stress.”
“Background: We hypothesized left ventricular (LV) dyssynchrony would affect postexercise accommodation of regional myocardial motion in patients with heart failure and a normal ejection fraction (HFNEF).
Methods and Results: Tissue-Doppler echocardiography was studied in 100 hypertensive patients with LV ejection fraction >50%. Among them, 70 HFNEF patients were classified into the systolic dyssynchrony (Dys: >65 ms difference of electromechanical delay between septal and lateral segments) (43 patients) and nondyssynchrony (Ndys: 27 patients) groups, and the other 30 patients were as the control (Ctrl). The systolic myocardial velocities (Sm) of 6-basal LV segments at baseline and after exercise were analyzed. When compared with the Ctrl group, the baseline lower mean Sm of 6 LV segments in the Ndys group could increase to a similar postexercise level as that in the Ctrl group, whereas that in the Dys group remained CYT387 supplier lower after exercise (7.8 +/- 1.3 versus Ndys: 8.6 +/- 1.5 and Ctrl: 8.9 +/- 1.2
cm/s, P < .05, respectively). This is mainly due to a much higher percentage increase of lateral Sm after exercise in the Ndys group (Ndys: 49 versus Dys: 29%, P < .05).
Conclusions: Dyssynchrony-related regional myocardial contractile abnormality after exercise in HFNEF patients suggested the detrimental impact of electromechanical uncoupling on HF symptoms. (J Cardiac Fail 2012;18:134-139)”
“Epoxy adhesives reinforced with carbon nanotubes (CNTs) were developed. The distribution of the CNTs in the epoxy matrix was observed with transmission electron microscopy. Joints were formed by unclad 2024-T3 aluminum adherents bonded with the CNT-filled epoxy adhesives. The durability of the joints was studied with a wedge test under water at 60 degrees C.