Henan Normal University

About: Henan Normal University is a education organization based out in Xinxiang, China. It is known for research contribution in the topics: Catalysis & Ionic liquid. The organization has 10863 authors who have published 11077 publications receiving 166773 citations.

Distribution of antibiotic-resistant bacteria in chicken manure and manure-fertilized vegetables

Abstract: Veterinary manure is an important pollution reservoir of antibiotics and antibiotic-resistant bacteria (ARB). However, little is known of the distribution of ARB in plant endophytic bacteria and the number/types of ARB in chicken manure. In this study, 454-pyrosequencing was used to investigate the distribution and composition of ARBs in chicken manure and fertilized vegetables. The prevalence of ARB in the samples of the chicken manure compost recovered from farms on which amoxicillin, kanamycin, gentamicin, and cephalexin were used was 20.91-65.9% for ARBs and 8.24-20.63% simultaneously resistant to two or more antibiotics (multiple antibiotic resistant bacteria (MARB)). Antibiotic-resistant endophytic bacteria were widely detected in celery, pakchoi, and cucumber with the highest rate of resistance to cephalexin. The pyrosequencing indicated that the chicken manure dominantly harbored Firmicutes, Bacteroidetes, Synergistetes, and Proteobacteria and that Bacteroidetes was significantly enhanced in farms utilizing antibiotics. In the total cultivable colonies, 62.58-89.43% ARBs and 95.29% MARB were clustered in Bacteroidetes with the dominant species (Myroides ordoratimimus and Spningobacterium spp., respectively) related to human clinical opportunistic pathogens.

Mesocrystalline Cu2O hollow nanocubes: synthesis and application in non-enzymatic amperometric detection of hydrogen peroxide and glucose

Abstract: Mesocrystalline Cu2O hollow nanocubes (MCHNs) were successfully prepared by a facile reduction reaction under room temperature. CuCl2 played a dual role as both copper source and morphology controlling reagent for the oriented aggregation of primary Cu2O crystallites toward MCHNs. Due to the high crystallinity and high specific surface area, the as-prepared MCHNs exhibited high electrocatalytic activity for the reduction of hydrogen peroxide (H2O2) and oxidation of glucose. The non-enzymatic amperometric biosensors based on the MCHNs demonstrated a detection limit of 1.03 μM and a sensitivity of 156.6 μA mM−1 for H2O2, as well as a detection limit of 0.87 μM and sensitivity of 52.5 μA mM−1 for glucose. The high sensitivities and anti-interference ability made the MCHNs a promising material in non-enzymatic biosensors.

Spin-orbit-coupled dipolar Bose-Einstein condensates.

Abstract: We propose an experimental scheme to create spin-orbit coupling in spin-3 Cr atoms using Raman processes. By employing the linear Zeeman effect and optical Stark shift, two spin states within the ground electronic manifold are selected, which results in a pseudospin-1/2 model. We further study the ground state structures of a spin-orbit-coupled Cr condensate. We show that, in addition to the stripe structures induced by the spin-orbit coupling, the magnetic dipole-dipole interaction gives rise to the vortex phase, in which a spontaneous spin vortex is formed.