Spatio-temporal assessment of landscape ecological risk and its influencing factors in Jiangxi Province, China.

Landscape ecological risk (LER) can be assessed according to the combined effect of natural disturbances and anthropogenic activities on ecosystem, which can provide an important basis for promoting ecological civilization. On the basis of landscape patterns, an LER assessment system was developed, and the spatiotemporal change in the LER in Jiangxi Province between 2000 and 2020 was analyzed. The findings revealed that rapid urbanization in Jiangxi Province has altered land use patterns, characterized by notable decreases in forestland and cultivated land, accompanied by a substantial increase in built-up land.

Spatiotemporal change in ecological quality and its influencing factors in the Dongjiangyuan region, China.

It is of great significance for regional ecological protection and sustainable development to quickly and effectively assess and monitor regional ecological quality and identify the factors that affect ecological quality. This paper constructs the Remote Sensing Ecological Index (RSEI) based on the Google Earth Engine (GEE) platform to analyze the spatial and temporal evolution of ecological quality in the Dongjiangyuan region from 2000 to 2020. An ecological quality trend analysis was conducted through the Theil-Sen median and Mann-Kendall tests, and the influencing factors were analyzed by using a geographically weighted regression (GWR) model.

Exploring the role of potassium ferrate and straw fiber in enhancing the strength of cement-based solidified municipal sludge.

The effect of potassium ferrate (PF) and straw fiber (SF) on the strength of cement-based solidified municipal sludge, including the influence of reducing the organic matter in the sludge on the efficiency of the hydration of the cement, was studied. Single-factor tests, orthogonal tests, and linear weighted optimization methods were used to obtain suitable ratios to meet practical requirements, and then SEM and XRD analyses were used to explore the solidification mechanism. The results showed that PF and SF had significant influence on the strength, with SF having the greatest influence and the strength increasing with the amount of both admixtures, and cement had no significant influence on the strength.

The impact of avoidant attachment on marital satisfaction of Chinese married people: Multiple mediating effect of spousal support and coping tendency.

In this study, the relationship between attachment avoidance and marital satisfaction of Chinese married people as well as the multiple mediating role of spousal support and coping tendency were explored. A model was developed using data of a sample of 510 Chinese married people. Four scales (the Experience of Close Relationships Scale, the Support Scale in Intimate Relationships, the Simple Coping Style Scale, and the Olson Marital Quality Questionnaire) were used to assess attachment avoidance, spousal support, coping tendency, and marital satisfaction, respectively.

A theoretical study of the electrochemical reduction of CO on cerium dioxide supported palladium single atoms and nanoparticles.

Pd/CeO catalysts show superior catalytic performance owing to their optimal cycling activity and stability. In this study, single-atom Pd and eight-atom Pd nanoparticle clusters were supported on the surface of CeO(110) to investigate the effect of loaded-metal size on the catalytic performance of the Pd-CeO system for CO reduction. We investigated the CO reduction reaction (CRR) that produces C products (CO, HCOOH, CHOH, and CH) on Pd/CeO and Pd/CeO by density functional theory.

The complete chloroplast genome sequence of (Labiatae), a special spice plant.

is well-known spice plant and resource of traditional Chinese herbal medicine, belonging to the of the Labiatae family. In this study, the whole chloroplast genome of the was sequenced, assembled and annotated, which contains 134 unique genes, including 89 protein-coding genes, 37 tRNA genes and 8 rRNA genes. A maximum likelihood phylogenetic tree based on 21 complete chloroplast genomes revealed that is closely related to genus.

Measuring the Efficiency of Fiscal Policies for Environmental Pollution Control and the Spatial Effect of Fiscal Decentralization in China.

This paper uses both fiscal expenditure policy and fiscal revenue policy as input indicators and selects environmental pollution control results reflecting different forms and sources of pollution as output indicators. The efficiency of fiscal policies for environmental pollution control (EFPE) of 30 provincial-level administrative divisions in China from 2007 to 2017 is measured by adopting the data envelopment analysis (DEA) method. Then, the spatial effect of fiscal decentralization on EFPE is empirically analyzed by using the spatial lag model (SLM).

Assessing Changes in Ecosystem Service Values in Response to Land Cover Dynamics in Jiangxi Province, China.

This paper examines the ecosystem service values of Jiangxi province, China using the benefit transfer approach. The land cover dynamics results show that cropland and forest are the main land cover types in Jiangxi province. Urban land drastically increased after 2000, expanding from 846.

An effective strategy for boosting photoinduced charge separation of AgPO by BiVO with enhanced visible light photodegradation efficiency for levofloxacin and methylene blue.

In this paper, a Z-scheme AgPO/BiVO photocatalyst was successfully prepared by precipitation-deposition method. The AgPO/BiVO composite exhibited enhanced photocatalytic activity and recyclability for levofloxacin and methylene blue degradation under visible light irradiation. In the AgPO/BiVO-0.

Methylene blue functionalized graphene as binder-free electrode for high-performance solid state supercapacitors.

Electrochemical active small organic molecules are potential electrode materials for supercapacitors due to their sustainable and good redox reversibility. However, the poor electrical conductivity restricts their application in supercapacitors. Herein, a water soluble organic dye of methylene blue (MB) has been supported on graphene (GR) through a facile ultrasonic method to form a methylene blue/graphene (MB/GR) composite.

Engineering the mechanical properties of CNT/PEEK nanocomposites.

Poly-ether-ether-ketone (PEEK) was deeply investigated as a composite matrix because of its outstanding mechanical properties and thermostability. However, the performance improvement of fiber-reinforced PEEK composites was moderate according to a great number of experimental investigations. An insightful understanding of the deformation and interfacial failure in the PEEK composite is needed to guide the future fabrication of high-performance PEEK plastics.

Theoretical exploration of the nanoscale host-guest interactions between [n]cycloparaphenylenes (n = 10, 8 and 9) and fullerene C₆₀: from single- to three-potential well.

The nanoscale host-guest interactions between [n]cycloparaphenylene ([n]CPP; n = 10, 8 and 9) nano-ring and fullerene C60 were explored theoretically. It is found that relatively small variations in the sizes of the [n]CPP host lead to very significant changes in encapsulation property toward the fullerene C60 guest. Expectedly, one stable inclusion-configuration of [10]CPP⊃C60 and one floating-configuration of [8]CPP⊃C60 are located on the potential surfaces of the two complexes, respectively.

Structure-property relationship of amplified spontaneous emission in organic semiconductor materials: TPD, DPABP, and NPB.

N,N'-Diphenyl-N,N'-bis(3-methylphenyl)-(1,1'-biphenyl)-4,4'-diamine (TPD) was demonstrated to be suitable for stimulated emission in doping and nondoping planar waveguide structure, but the mechanism for its lasing is of ambiguity. With the aim of providing a microsscopic picture for its lasing, we performed a combined experimental and theortical investigation of the absorption, photoluminescence (PL), and stimulated emission of TPD and other two similar molecules: 1,4-bis (diphenylamino)biphenyl (DPABP) and N,N'-diphenyl-N,N'-bis(1-naphthyl)-1,1'-biphenyl-4,4″-diamine (NPB). It was found that DPABP shows the same amplified spontaneous emission (ASE) characteristics as TPD, but NPB did not.

Chemically modified fullerene derivatives as photosensitizers in photodynamic therapy: a first-principles study.

The first-principles density functional theory (DFT) and its time-dependent approach (TD-DFT) are used to characterize the electronic structures and optical spectra properties of five chemically modified fullerenes. It is revealed that the metal fullerene derivatives possess not only stronger absorption bands in visible light regions than organically modified fullerene but also the large energy gaps (ΔE(S-T) > 0.98 eV) between the singlet ground state and the triplet state, which imply their significant aspect of potential candidates as a photosensitizer.