The results of this study provided useful information on the utilization of ion exchange resins as release modifiers in matrix systems.”
“Study Design. Cross-sectional study.
Objective. To investigate
the automatic balance correction related to anticipatory perturbation (AP) and quick backward perturbation in adolescent idiopathic scoliosis (AIS).
Summary of Background Data. Most previous studies on AIS patients focused on posture sway and lacked analysis of muscle activated patterns in dynamic standing control.
Methods. Thirty-two AIS patients and 23 age-matched normal subjects received perturbation balance tests on an unstable platform. The tilting angle of the platform and the muscle MK-2206 manufacturer activity of the bilateral lumbar multifidi, gluteus medii, and gastrocnemii muscles were recorded. Electromyographic (EMG) amplitude, onset latencies, and duration were calculated with
software accompanied with machine.
Results. The AIS group had less posture see more tilting but higher muscle activities than normal subjects under both perturbation conditions (P < 0.05). Under the AP test, AIS showed earlier onset and prolonged activation of left multifidus and right gastrocnemius compared with normal subjects (P < 0.05). The latency of the multifidus on the lumbar convex side occurred earlier than on the concave side. However, the asymmetric onset timing of the gastrocnemius was the opposite of the multifidi in the AIS group (P < 0.05). In contrast to the AP condition, bilateral leg and trunk muscles activated at similar latencies and durations in the AIS group (P < 0.05). Under the quick backward perturbation test, the control group had longer active duration of right multifidus and bilateral gastrocnemii than AIS to cope with larger platform tilting. In addition, asymmetric onset of gluteus medii and duration of multifidi was observed in the control group
(P < 0.05).
Conclusion. There were significant differences in posture control patterns between AIS and normal subjects. AIS subjects have asymmetric habitual muscle activities Gilteritinib for AP, whereas when coping with sudden balance threats, they react with synchronized recruitment of bilateral postural muscles.”
“The purpose of this study was to resolve an anomalously high measure of extra-fine particle fraction (EPF) determined by the abbreviated cascade impactor possibly relevant for human respiratory tract (AIM-HRT) in the experiment described in Part 1 of this two-part series, in which the relative precision of abbreviated impactors was evaluated in comparison with a full resolution Andersen eight-stage cascade impactor (ACI).