Comparative metabolic profiling of different pakchoi cultivars reveals nutritional diversity widely targeted metabolomics.

Pakchoi ( ssp. ) is cultivated for its high nutritional value; however, the nutritional diversity of different pakchoi cultivars is rarely investigated. Herein, we performed widely targeted metabolic profiling analyses of five popular pakchois.

A Method to Measure Permeability of Permalloy in Extremely Weak Magnetic Field Based on Rayleigh Model.

In order to solve the problem that the relative permeability of the permalloy is missing and difficult to measure accurately in an extremely weak magnetic field (EWMF, <1 nT), a method to measure the permeability in EWMF based on the Rayleigh model is proposed in this paper. In this method, the Rayleigh model for the magnetic material was first introduced. Then, the test system for measuring the permeability of permalloy for the standard ring specimen was set up.