Wireless power transfer system for capsule robot designed by radial square transmitting coil pair with novel ferrite structure.

Background: Wireless power transmission for capsule robots has always posed challenges due to the unpredictable postures.

Methods: A radial transmitting coil with a novel ferrite structure is proposed, which consists of two parts with the function of converging magnetic induction lines and reducing magnetic leakage. To improve the flux density, uniformity, and shielding effectiveness, the design parameters are discussed and optimized on the basis of analytical calculations and simulation analysis.

[Study of tyrosinase gene mutation in oculocutaneous albinism type 1 patients].

Objective: To explore the patients' genotypes and the mutation spectrum of Tyrosinase (TYR) gene and the effects on protein structure and function in oculocutaneous albinism type 1 (OCA1).

Methods: The polymerase chain reaction (PCR) and sequencing techniques were applied to amplify and analyze the regions of exon, exonintron and promoter of TYR gene of 15 OCA1 probands and some of their parents. The protein structure and function were forecasted and analyzed by bioinformatics software.