Relationship between friction force and orthodontic force at the leveling stage using a coated wire.

Unlabelled: The relationship between orthodontic force and friction produced from an archwire and brackets affects the sliding of the wire in the leveling stage.

Objective: The purpose of this study was to evaluate the relationship between force and friction in a small esthetic nickel-titanium (Ni-Ti) wire.

Material And Methods: Five esthetic wires (three coated and two plated) and two small, plain Ni-Ti wires (0.

[Pulmonary alveolar proteinosis detected by a nodular lesion on chest computed tomography].

A 74-year-old woman was admitted to our hospital for further examination of chest X-ray abnormality. The chest computed tomography (CT) revealed a nodular lesion (1.0 cm in diameter) in right lung.

Effect of caffeine on the multiplication of DNA and RNA viruses.

The present study examined the effect of caffeine on RNA and DNA viruses, revealing that it inhibits the multiplication of both. In the presence of caffeine, the progeny virus yield of both herpes simplex virus type 1 (HSV-1) and poliovirus decreased with increasing concentrations of the reagent, although HSV-1 was much more sensitive than poliovirus. The influenza virus was not affected by caffeine at the same concentrations.

Preparation, photocatalytic activities, and dye-sensitized solar-cell performance of submicron-scale TiO2 hollow spheres.

We prepared submicron-scale spherical hollow particles of anatase TiO2 by using a polystyrene-bead template. The obtained particles were very uniform in size, with a diameter of 490 nm and a shell thickness of 30 nm. The Brunauer-Emmett-Teller surface area measurements revealed a large value of 70 m2/g.

Endobronchial ultrasonography using a guide sheath increases the ability to diagnose peripheral pulmonary lesions endoscopically.

Study Objective: To assess the ability of endobronchial ultrasonography (EBUS) using a guide sheath (EBUS-GS) to diagnose peripheral pulmonary lesions.

Method: We devised a technique for EBUS-GS covering a miniature probe, and 150 lesions were evaluated in a prospective open study. In this procedure, the probe covered by a guide sheath is introduced into the lesion via the working channel of a bronchoscope.

Analysis of the internal structure of peripheral pulmonary lesions using endobronchial ultrasonography.

Study Objective: To correlate the internal structure of peripheral pulmonary lesions, as visualized by endobronchial ultrasonography (EBUS), and the histology of the surgical specimen to develop a classification system for distinguishing benign from malignant lesions by EBUS.

Design: Retrospective review.

Setting: A national hospital.