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In this paper, an iron-based alumina composite was synthesized by modifying activated alumina with ferric chloride. The adsorption performance of iron-based alumina composite modified with 15% ferric chloride solution reached a certain peak. At lower initial fluoride concentration, the amount of fluoride treated by this composite is much more than that of water samples with higher initial fluoride concentration. To some degree, the slower flow rate of fluoride solution, the better adsorption performance of adsorbent. The iron-based alumina composite expressed a better performance of fluoride adsorption at pH=6.5. The adsorbent treated with aluminum potassium sulfate had the best adsorption performance.

[Objective] The Urumqi River is one of the most important rivers in northwestern China. The objective of this paper is to study the change in vegetation coverage in its basin and the underlying determinants in attempts to help improve its management. [Method] The study is based on the Landsat TM/OLI remote sensing imageries from 2000 to 2020. Spatiotemporal variations in vegetation coverage (FVC) in the basin during this period are extracted using the image dichotomy and vegetation cover transfer matrix, from which we analyze the changes in land use and topographic features in the basin. The factors that are responsible for the change in FVC in the basin are calculated using the geo-detector model, reclassification and other methods.[Result] From 2000 to 2020, vegetation coverage in the basin decreased first and then increased. Vegetation coverage was high in the upper reaches and low in the middle and low reaches. Vegetation coverage in different land usage was ranked in the order of forest land > cropland > grassland > construction land > water bodies > unused land. The change in vegetation coverage was influenced by topographic factors and fluctuated with elevation, with the vegetation coverage being the highest in elevations <500m and between 2 000 to 2 500 m. Across the basin, vegetation coverage was negatively correlated to slope. The results of the factor detection analysis showed that environmental factors that affected vegetation coverage were ranked in the order of land use > air temperature > elevation > surface temperature > precipitation > soil moisture > slope > slope direction. The results of the interaction detection analysis show that elevation-land use, land use-temperature are the coupling factors that influenced vegetation coverages more than coupling of other factors. [Conclusion] The average vegetation coverage in the Urumqi River basin varied from 0.348 to 0.456 in 2000-2020; it varied spatially. Overall, it is high in the upper reach and low in the middle and lower reaches. Variation in land use explains the variation in the vegetation coverage more than any other natural factors. [ABSTRACT FROM AUTHOR]

Small‐sized CuS nanoparticles/N,S co‐doped rGO composites are synthesized by using metal‐containing ionic liquids as the multifunctional precursors, which are investigated as promising host electrode materials for high‐performance lithium‐ion batteries. More details can be found in article number 1900038 by Xueda Ding, Chengfeng Du, Jianrong Li, and co‐workers. [ABSTRACT FROM AUTHOR]

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Coccidiosis triggered by Eimeria tenella is accompanied by haemorrhagic caecum and high morbidity. Vaccines are preferable choices to replace chemical drugs against coccidiosis. Surface antigens of apicomplexan parasites can adhere to host cells during the infection process. Therefore, truncated fragments coding E. tenella surface antigen 16 (EtSAG16) and 22 (EtSAG22) were cloned into pET-28a prokaryotic vector to express recombinant protein 16 (rEtSAG16) and 22 (rEtSAG22), respectively. Likewise, pEGFP-N1-EtSAG16 and pEGFP-N1-EtSAG22 plasmids were constructed using pEGFP-N1 eukaryotic vector. Further, pEGFP-N1-EtSAG4-16-22 multiple gene plasmid carrying EtSAG4, 16 and 22 were designed as cocktail vaccines to study integral immunoprotective effects. Western blot and RT-PCR (reverse transcription) assay were performed to verify expressions of EtSAG16 and 22 genes. Immunoprotective effects of recombinant protein or DNA vaccine were evaluated using different doses (50 or 100 μg) in vivo. All chickens in the vaccination group showed higher cytokine concentration (IFN-γ and IL-17), raised IgY antibody level, increased weight gain, lower caecum lesion score and reduced oocyst shedding compared with infection control groups (p < 0.05). The highest anticoccidial index (ACI) value 173.11 was from the pEGFP-N1-EtSAG4-16-22 plasmid (50 μg) group. In conclusion, EtSAG16 and 22 might be alternative candidate genes for generating vaccines against E. tenella infection. [ABSTRACT FROM AUTHOR]

The extent of the impact of experiential marketing methods on customer repurchase intentions is studied. Taking the children's clothing customers in Xi'an as the researc h object, the questionnaire was designed based on the relevant literature. A total of 200 questionnaires were distributed, of which 188 were valid questionnaires, and the effective re covery rate was 94%. The statistical data was analyzed by means of reliability test, validity test, correlation analysis, regression analysis and regulation analysis. It was concluded th at the children's wear brand experience marketing had a positive impact on the customer repurchase intention; brand awareness on the children's wear brand experience marketing and The relationship between customer repurchase intentions has a positive adjustment effect. [ABSTRACT FROM AUTHOR]