Trajectory Definition with High Relative Accuracy (HRA) by Parametric Representation of Curves in Nano-Positioning Systems.

Nanotechnology applications demand high accuracy positioning systems. Therefore, in order to achieve sub-micrometer accuracy, positioning uncertainty contributions must be minimized by implementing precision positioning control strategies. The positioning control system accuracy must be analyzed and optimized, especially when the system is required to follow a predefined trajectory.

[Nasal resistance and continuous positive airway pressure treatment for sleep apnea/hypopnea syndrome].

Objective: To evaluate the relation between nasal resistance and tolerance and compliance with continuous positive airway pressure (CPAP) in patients with obstructive sleep apnea/hypopnea syndrome (SAHS).

Material And Method: One hundred twenty-five patients with a mean apnea/hypopnea index (AHI) of 53 21 were assessed for nasal resistance by active anterior rhinometry before starting CPAP treatment. Airflow (cm3/s) at 150 Pa was measured at each nostril.

Effect of budesonide and nedocromil sodium on IL-6 and IL-8 release from human nasal mucosa and polyp epithelial cells.

We investigated the effect of budesonide and nedocromil sodium on the secretion of IL-6 and IL-8 by cultured epithelial cells from healthy nasal mucosa and nasal polyps. Human epithelial cell conditioned media was generated with fetal calf serum (FCS) in the presence or absence of budesonide and/or nedocromil sodium. Budesonide inhibited FCS-induced IL-6 and IL-8 release in a dose-dependent manner.