Antifungal Activity and Mechanism of Diaporthein B against in Prevention of Apple Ring Rot.

Apple ring rot, caused by the pathogenic fungus , has inflicted substantial economic losses and caused significant food safety concerns. In this study, a pimarane-type diterpenoid, diaporthein B (DTB), isolated from a marine-derived fungus, exhibited significant antifungal activity against , with an EC value of 8.8 μg/mL.

Site-selective growth and plasmonic spectral properties of L-shaped Janus Au-Ag gold nanodumbbells for surface-enhanced Raman scattering.

Ligand-mediated interface control has been broadly applied as a powerful tool in constructing asymmetric multicomponent nanoparticles (AMNP), and induces the anisotropic growth with fine-tuning morphology, composition, plasmonic property and functionality. As a new kind of AMNP, the synthesis of Janus Au-Ag nanoparticles with tunable negative surface curvature is still a challenge. Here, we demonstrate that the synergistic surface energy effects between gold nanodumbbells (Au NDs) with a negative surface curvature and 4-mercaptobenzoic acid (4-MBA) can direct the site-selective growth of anisotropic silver domains on gold nanodumbbells (Au NDs@Ag NPs).

Minimally invasive nephrolithotomy versus retrograde intrarenal surgery in surgical management of Lower calyceal stones: a systematic review with meta-analysis.

Objective: The efficacy and safety of minimally invasive nephrolithotomy (MPCNL) versus retrograde intrarenal surgery (RIRS) was assessed for lower calyceal (LC) stones.

Methods: Our team conducted a systematic literature search up to December, 2022, using PUBMED, EMBASE and the Cochrane Library. The study was registered in PROSPERO, CRD 42021247197.

Marine fungal metabolites as a source of drug leads against aquatic pathogens.

Aquatic pathogens, including Vibrio, Edwardsiella, Pseudomonas, and Aeromonas, which could result in bacterial diseases to aquaculture, have seriously threatened the world aquaculture production. Marine-derived fungi, which could produce novel secondary metabolites with significant antibacterial activity, may be an important source for finding effective agents against aquatic pathogens. In this review, a systematically overview of the harm of several aquatic pathogens, and 134 antibacterial secondary metabolites against aquatic pathogens from 13 genera of marine-derived fungi, were summarized and concluded.

[Development of the certified reference material of mercury in lyophilized human urine].

Objective: To develop the certified reference material of mercury in lyophilized human urine.

Methods: Human urine samples from normal level mercury districts were filtered, homogenized, dispensed, lyophilized and radio-sterilized. Homogeneity test, stability inspection and certification were conducted using a atom fluorescence spectrophotometric method.

[Study on the knowledge, behavior and attitude of influenza A (H1N1) among residents in Shuangqiao District, Chengde city].

Objective: To understand the the residents' knowledge, behavior and attitude of influenza A (H1N1) in Shuangqiao District of Chengde city, and provide the basis for making proper strategies of health education, prevention and control on influenza A (H1N1).

Methods: 211 residents from 1 community and 1 village of Shuangqiao District were selected to participate the questionnaire interview with multi-stage clustering sampling.

Results: 97.

[Progress on detection and analysis method of endocrine disrupting compounds].

EDCs are new generation of environmental pollutions which are globally concerned. They may cause adverse effect mainly to the endocrine system and nervous system, etc. To assess the EDCs' hazard to the health exactly, we should know about the distribution and level of EDCs in the environment.