Effects of oil pollution on the growth and rhizosphere microbial community of Calamagrostis epigejos.

Bacteria, fungi, archaea, and viruses are reflective organisms that indicate soil health. Investigating the impact of crude oil pollution on the community structure and interactions among bacteria, fungi, archaea, and viruses in Calamagrostis epigejos soil can provide theoretical support for remediating crude oil pollution in Calamagrostis epigejos ecosystems. In this study, Calamagrostis epigejos was selected as the research subject and subjected to different levels of crude oil addition (0 kg/hm, 10 kg/hm, 40 kg/hm).

Biotic Interactions Shape Soil Bacterial Beta Diversity Patterns along an Altitudinal Gradient during Invasion.

Invasive plants have already been observed in the understory of mountain forests, which are often considered a safe shelter for most native plants. Microorganisms might be drivers of plant invasions. Nevertheless, the mechanisms determining variations in microbial community composition (beta diversity) during invasion along altitudinal gradients remain to be elucidated.

Ultrasound-guided needle knife release for stenosing tenosynovitis of the flexor pollicis longus: a prospective randomized controlled trial.

Purpose: This study aimed to evaluate the efficacy and safety of ultrasound-guided needle knife release in the treatment of stenosing tenosynovitis of the flexor pollicis longus.

Methods: In this prospective trial, 60 patients with clinically and ultrasonographically confirmed stenosing tenosynovitis of the flexor pollicis longus were randomly allocated to 1 of 3 groups: ultrasound-guided needle knife release (n = 20), traditional conservative treatment (n = 20), and open surgery (n = 20). The primary outcome measure was the Quinnell grade of triggering severity.

Molecular Diversity of Ectomycorrhizal Fungi in Relation to the Diversity of Neighboring Plant Species.

(1) Background: Plant diversity has long been assumed to predict soil microbial diversity. The mutualistic symbiosis between forest trees and ectomycorrhizal (EM) fungi favors strong correlations of EM fungal diversity with host density in terrestrial ecosystems. Nevertheless, in contrast with host tree effects, neighboring plant effects are less well studied.

[Response of Soil Respiration Rates to Soil Temperature and Moisture at Different Soil Depths of Plantation in the Loess-Hilly Region].

It is of great significance to clarify the influence of soil temperature and moisture on soil respiration rate and its characteristics in ecologically fragile regions under the background of climate change for the accurate assessment and prediction of carbon budgets in this region. The average CO concentration and soil temperature and moisture at different soil depths (10, 50, and 100 cm) were measured using a CO analyzer and temperature and moisture sensors. The soil respiration rate was calculated using Fick's first diffusion coefficient method.

Distributed multi-agent collision avoidance using robust differential game.

This paper proposes a novel robust differential game scheme to solve the collision avoidance problem for networked multi-agent systems (MASs), subject to linear dynamics, external disturbances and limited observation capabilities. Compared with the existing differential game approaches only considering obstacle avoidance objectives, we explicitly incorporate the trajectory optimization target by penalizing the deviation from reference trajectories, based on the artificial potential field (APF) concept. It is proved that the strategies of each agent defined by individual optimization problems will converge to a local robust Nash equilibrium (R-NE), which further, with a fixed strong connection topology, will converge to the global R-NE.