Synthesis of lead-free piezoelectric powders by ultrasonic-assisted hydrothermal method and properties of sintered (K0.48Na0.52)NBO3 ceramics.

(K,Na)NbO3 ceramics have attracted much attention as lead-free piezoelectric materials with high piezoelectric properties. High-quality (K,Na)NbO3 ceramics can be sintered using KNbO3 and NaNbO3 powders synthesized by a hydrothermal method. In this study, to enhance the quality factor of the ceramics, high-power ultrasonic irradiation was employed during the hydrothermal method, which led to a reduction in the particle size of the resultant powders.

Study on optimizing ultrasonic irradiation period for thick polycrystalline PZT film by hydrothermal method.

The hydrothermal method utilizes a solution-based chemical reaction to synthesize piezoelectric thin films and powders. This method has a number of advantages, such as low-temperature synthesis, and high purity and high quality of the product. In order to promote hydrothermal reactions, we developed an ultrasonic assisted hydrothermal method and confirmed that it produces dense and thick lead-zirconate-titanate (PZT) films.

Using the law of battery to protect and support breastfeeding.

Hospital practices can interfere with the successful initiation of breastfeeding. This article describes two cases in which parents sought legal advice in relation to supplemental feedings and artificial nipples. The authors recommend that parents send a letter of direction to their health care providers prior to their infant's delivery, and a sample is provided.

The lactation consultant as expert witness.

Several factors contributed to the impact of Ms. Scott's testimony on the judge and thereby on the case. Most obvious was the degree of her expertise; just as important was the way in which she presented her testimony.