Continuous cropping of ginseng (Panax Meyer) cultivated in farmland for an extended period gives rise to soil-borne disease. The change soil microbial composition is a major cause diseases and obstacle continuous cropping. impact cultivation modes ages on the diversity P. rhizosphere community technology suitable are still being explored.Amplicon sequencing bacterial 16S rRNA genes fungal ITS regions were analyzed diversity.The obtained data reasonable estimating diversity. We observed...

Effective catalytic removal of 4-nitrophenol (4-NP) in industrial wastewater remains a significant challenge due to the lack highly efficient and stable catalysts. Herein, we demonstrated promising plasma method for facile, ultra-fast low-temperature synthesis graphite oxide (GO)-supported palladium catalyst (Pd/GO-P) rich oxygen-containing groups (OCGs) defects with smaller Pd nanoparticles (NPs) 4-NP reduction. The limited damage OCGs retained more (mainly alkoxy hydroxyl groups) on GO...

This paper aims to improve the swimming efficiency of biomimetic robotic fish by optimising its propulsion curve with three degree freedom (DOF), in which key is minimise resistance during swing backstroke pectoral fin. For this purpose, a reference point on fin first selected, and then an 8-shaped constructed coordinate rowing flapping motions. Meanwhile, feathering motion also given correspondingly. On basis, overall curvature offset are proposed as measurement parameters for deformation...

Tripleurospermum limosum (TL) has been used in folk medicine to treat gastritis. Toward the further development and use of TL, we report phytochemical profiling, determination active components, antioxidant enzyme inhibitory activities TL. Nineteen compounds were identified by ultra-performance liquid chromatography-electrospray ionization-orbitrap-mass spectrometry for first time this plant. Phytochemical studies indicated that TL contained 11 types phytochemicals. The components [total...

Ion evaporation from charged surfaces of ionic liquids has aroused significant interest due to its wide range applications in various fields, such as liquid ion sources (ILIS), electrospray thrusters, and high-precision etching, among others. This study delves into the transient electrohydrodynamics drops undergoing with assistance an externally applied electric field. A electrohydrodynamic (EHD) model is developed make up for dearth direct observation (visualization). structure...

The conventional use of Heracleum moellendorffii Hance is for wind dispelling and toxin removal. This research aims to enhance the understanding flowering aerial parts this plant by analyzing its volatile oil. Hydrodistillation was employed extract essential oil, which subsequently analyzed using gas chromatography coupled with mass spectrometry. analysis revealed presence 50 compounds, accounted 92.67% oil's composition. major constituents include germacrene D (21.78%), n-octyl acetate...

Conductive droplets in strong electric fields are prone to Coulombic explosions. At the nanoscale, field strength on droplet surface can become sufficiently intense directly extract ions from liquid, a phenomenon termed ion evaporation. Previous studies have demonstrated that evaporation profoundly alters dynamics of explosions by depleting charge carried droplets. This study incorporates mass loss due evaporation, crucial factor for nanoscale was previously overlooked. Utilizing sharp...

Ionic liquids in electrospray thrusters undergo elongation and ion emission when subjected to strong electric fields. This process typically involves multiple physical fields spans various temporal spatial scales. In this study, a fully coupled electrohydrodynamics–particle-in-cell method is proposed perform transient simulation of process. Based on method, the dynamic deformation freely suspended ionic liquid droplets an field was simulated, changes quantities (such as surface charge...

Anemone baicalensis, a plant abundant in Northeast China, has garnered attention for its potential medicinal properties. While aerial parts (ABAP) have demonstrated significant antioxidant activity, the rhizome (ABR) remains less explored, particularly comparison to well-documented Anemones raddeanae Rhizoma, valuable traditional Chinese medicine. This study investigates chemical composition and bioactivity of ABR, comparing it with ABAP evaluating as substitute Rhizoma. Phytochemical...

Aero-engine turbine components have complex structures, harsh service load environments, and strong nonlinear structural responses, so it is difficult to establish the explicit limit state function, which a typical implicit function reliability analysis problem. To address this challenge, based on Particle Swarm Optimization Back Propagation Neural Network (PSO-BPNN), approach proposed in paper. In method, PSO algorithm employed optimize initial weights biases of BPNN. This global...

Lycium barbarum (L. barbarum) fruit or extract has been regarded as a superior-grade Chinese medicine, used to modulate body immunity and for anti-aging purposes. However, the underlying molecular mechanisms behind these effects remain unclear. In present study, L. polysaccharides (LBPs), considered major contributor of effects, were elucidate its mechanism action by phenotypic senescence associated-β-galactosidase (SA-β-gal) assays, evaluation survival rates in vivo expression profiling...

This paper presents a comparative study on water entry and walking events of elastic spheres using fluid–structure interaction method. The sphere displacements, cavity formations, hydrodynamic characteristics during the are investigated. When impact angle decreases, an obliquely impacting surface can undergo transition from to events. Based morphological classification opening, shapes openings formed by be roughly predicted material properties conditions. Furthermore, event is characterized...

This paper describes a microwave plasma jet in an argon atmosphere capable of generating filamentary streamer discharges within the entire quartz tube excited by surface waves plasmon polaritons (SPPs) located tube. Several discharge streamers are immediately produced at end copper wire when incident power reaches 20 W. From simulations, wavelength wave was found to be approximately 5.7 cm. Although developing induce E-field enhancements favoring discharging, more bifurcations requiring...

The unique physical and chemical characteristics of nanomaterials, such as the effects their small size, surface effects, very high rates reaction, quantum tunnel effect, have aroused great interest among scholars. However, improper usage has led to an increasing number nanomaterials entering environment through various channels, greatly threatening security ecological human health. urgent need for a scientific assessment biosafety can enable truly benefit humanity. current research in this...

Ionization waves (propagating bullet-shaped plasma) are always present in atmospheric-pressure plasma jets generated by a pulsed DC power supply or low-frequency voltages. Nevertheless, whether these ionization exist for microwave remains unclear. In this paper, coaxial transmission line resonator driven pulses is capable of generating atmospheric pressure jet plumes. Depending on the discharges, plumes exhibit distinctive characteristics, such as fronts argon and ball-shaped helium plasma....