[Chemical Component of Particulate Matters and VOCs Characteristics During Vehicle Brake Processes].

Six sets of brake systems were tested using a brake dynamometer, and the brake wear particles (BWPs) and volatile organic compounds (VOCs) were collected during the braking process. In total, 39 elements, 12 water-soluble ions, 7 carbon components, and 18 polycyclic aromatic hydrocarbons (PAHs) in BWPs were extracted and detected, and 74 VOCs in gas samples were analyzed. The average mass fractions of 12 inorganic elements (i.

Inhibitory effects of pH, salinity, and tea polyphenols concentration on the specific spoilage organisms isolated from lightly-salted large yellow croaker ().

and were identified as specific spoilage organisms (SSOs) isolated from the refrigerated lightly-salted large yellow croaker (). In this work, the inhibitory effects of pH, salinity, and tea polyphenols concentration on both strains were investigated. Modified Gompertz models were used to estimate the kinetic parameters (maximum specific growth rate) and (duration of lag phase) of the two strains under different conditions, demonstrating that their growth rates decreased with the decrease of pH as well as the increase of salinity and tea polyphenols concentration, and the growths of both strains stopped while the salinity and tea polyphenols concentration increased to 0.

[Microbial growth kinetics model of specific spoilage organisms and shelf life prediction for tilapia at fluctuating temperatures].

It was studied on the growth kinetics model of specific spoilage organisms Pseudomonas spp. for cultured tilapia during aerobic storage at fluctuating temperatures from 0degreesC to 15degreesC and the applicability of the model in predicting the remaining shelf life. The mathematical model based on the effect of temperature on Pseudomonas spp.