Search

Your search keyword '"Luo Wenhua"' showing total 402 results
Start Over Author "Luo Wenhua"
402 results on '"Luo Wenhua"'

1. Thermodynamics Study on Liquid Phase Catalytic Exchange for Water Detritiation

Author

Li Peilong, Chen Min, Zhang Zexuan, Luo Wenhua, Wen Ming, Zhang Xin, Yu Bin, Jiang Fei, Shi Yan, and Song Jiangfeng

Subjects
Environmental sciences, GE1-350
Abstract

Liquid phase catalytic exchange (LPCE) is one of the key technologies for tritium removal of tritiated water, such as effluents from Fukushima nuclear power plant. Although former researchers have widely studied this process theoretically, the reported results differ from each other due to different assumptions and parameters adopted. In this work, the principle of Gibbs free energy minimization is applied, with only basic physical properties and no more other assumptions involved. The predictions of isotope exchange are more accurate, and the average error between calculation results and experimental data reduces from 4.45%~6.65% to 2.17%. Then the catalytic exchange behaviors are systematically investigated in the protium-deuterium (H-D) system, and the influence of the cascade processes are emphatically analyzed. The method established in this paper could be applied to catalytic exchange systems for tritium separation, which is essential for the development of water detritiation.

Published
2021
Full Text
View/download PDF

30. Dietary Quercetin Regulates Gut Microbiome Diversity and Abundance in Apis cerana (Hymenoptera Apidae).

Author

Wu, Haodong, Ji, Conghui, Wang, Ruisheng, Gao, Lijiao, Luo, Wenhua, and Liu, Jialin

Subjects
APIS cerana, POLYMERASE chain reaction, QUERCETIN, FOOD consumption, APIDAE, GUT microbiome, POLLINATORS
Abstract

Simple Summary: Bees frequently ingest high concentrations of quercetin throughout their lifespan, as quercetin exists in pollen, nectar, and propolis. Studies have reported that quercetin enhances pesticide tolerance and survival rates in honeybees, contributing to their health. However, it is unclear whether quercetin affects their health via changes in the gut microbiota. This study demonstrated that short-term quercetin intake significantly altered the gut microbiome of Apis cerana at 5 and 9 days; however, quercetin had no significant effects on survival rate, food consumption, and gut structure. These findings improve our understanding of the interactions between dietary phytochemicals and the bee gut microbiome. Honeybee gut microbiota plays a crucial role in maintaining their health and digestive function. Studies have confirmed that quercetin improves honeybee health by enhancing their pesticide tolerance and survival rates. This study aimed to examine the effects of quercetin on the bee gut microbiome by absolute quantification sequencing. We included 1800 bees from the experimental apiary and exposed them to 151.2, 75.6, and 37.8 mg/L of quercetin. Gut samples were collected on the 5th and 9th days, subjected to a polymerase chain reaction and 16S rRNA sequencing, and analyzed. After 5 days of quercetin treatment, the diversity of the honeybee gut microbiota was altered, and total bacterial copies and Lactobacillus abundance significantly decreased at high quercetin concentrations (151.2 and 75.6 mg/L). On day 9, the gut microbial community had recovered from the adverse effects, and Gilliamella abundance increased in response to 37.8 mg/L quercetin treatment. However, quercetin had no noticeable effects on survival rate, food consumption, and gut structure. Our study confirmed the effect of short-term quercetin intake on the gut microbiota of A. cerana, providing valuable insights into how phytochemicals alter the bee gut microbiome, and their repercussions on host physiology. [ABSTRACT FROM AUTHOR]

Published
2025
Full Text
View/download PDF

44. Comparison of Gut Microbiota in Overwintering Bees: Apis cerana vs. Apis mellifera.

Author

Chen, Heng, Gao, Lijiao, Liu, Jialin, Ji, Conghui, Dang, Xiaoqun, Zhou, Zeyang, and Luo, Wenhua

Subjects
APIS cerana, HONEYBEES, PENTOSE phosphate pathway, GUT microbiome, COLD adaptation
Abstract

Bees play important roles in socio-economic development, biodiversity conservation, and ecosystem stability. However, during the cold season, resources become limited, leading to significant losses in bee colonies. Although many studies have described the characteristics of winter bees and demonstrated that notable changes occur in their gut microflora, the underlying mechanisms remain yet to be fully elucidated. Therefore, this study was conducted to compare the gut microbiota dynamics of overwintering bees. Sample acquisition involved randomly selecting ten colonies each from three bee farms containing Apis cerana (AC) and Apis mellifera (AM), followed by dissection for further analysis. DNA was extracted, and 16S rDNA sequencing, along with various bioinformatics tools, was used to assess microbial diversity, functional differences, and species comparisons between AC and AM gut microbiota. AC exhibited lower β diversity in the gut microbiota than AM during winter. Moreover, Gilliamella and Apibacter were relatively more abundant in AC. Regarding microbial functions, key pathways included the phosphotransferase system, galactose metabolism, the pentose phosphate pathway, and carbohydrate transport and metabolism. These results suggest the presence of microbial diversity differences between AC and AM, with the differential microbial functions mainly enriched in metabolic pathways that facilitate adaptation to cold environmental stress. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results