The conversion of the more toxic Sb(III) into less toxic Sb(V) is an effective strategy for the treatment of antimony-contaminated sites. In this study, a strain, Phytobacter sp. X4, which can tolerate high concentrations of antimony and can use nitrate as an electron acceptor for Sb(III) oxidation under anaerobic conditions, was isolated from the deep soil of an antimony mine flotation tailing.
View Article and Find Full Text PDFThis study investigated soil microbial community in a typical gathering area of antimony mining and smelting in South China. The physical and chemical properties of different soils (mining waste dumps, flotation tailings, and smelting slag) and depths (0-20 cm, 40-60 cm, and 80-100 cm) were compared. The results showed that antimony (Sb) and arsenic (As) were the main pollutants, and their concentrations were 5524.
View Article and Find Full Text PDFIEEE Trans Image Process
December 2020
Person re-identification aims to identify whether pairs of images belong to the same person or not. This problem is challenging due to large differences in camera views, lighting and background. One of the mainstream in learning CNN features is to design loss functions which reinforce both the class separation and intra-class compactness.
View Article and Find Full Text PDFA new, non-contact, three-dimensional (3D) bullet signature measuring system based on a chromatic confocal sensor is developed. The system is composed of a precision rotary table and a chromatic confocal sensor. The measurement uncertainty of the system is less than 1 µm.
View Article and Find Full Text PDFBackground: Persistent hyperplastic primary vitreous (PHPV) is a congenital form of vitreous dysplasia that can be categorized into anterior, posterior, and mixed types according to the affected location within the eye. Definitive diagnoses of PHPV are usually made based on B-mode ultrasound, optical coherence tomography (OCT), and Doppler ultrasound findings. In this report, we discuss the case of a 7-year-old boy in whom a definitive diagnosis of atypical anterior PHPV was possible based on intraoperative observations, pathological findings, and the results of ophthalmic examination.
View Article and Find Full Text PDFYan Ke Xue Bao
December 2003
Purpose: To evaluate the molecular chaperone function of alpha-crystallin with ageing.
Methods: alpha-Crystallin of newborn, adult and old rabbits lenses in both of cortex and nucleus were separated by chromatography on Sephacryl S-300HR. The protection of alpha-crystallin against thermal aggregation of catalase and beta L-crystallin (60 degrees C), inactivation of catalase by fructose(37 degrees C) and heat stress(60 degrees C) were measured spectrophotometrically.