检索结果-内蒙古大学图书馆

The combined metabolism and transcriptome of tail muscles reveal the effects of antimony pulse exposure on swimming behavior of Pelophylax nigromaculatus tadpoles

引用

Science of the Total Environment 2025年 958卷 177929页

作者： Huang, Minyi Cao, Songle Huang, Ying Tan, Zikang Duan, Renyan College of Agriculture and Biotechnology Hunan University of Humanities Science and Technology Hunan Loudi417000 China Key Laboratory of Development Utilization Quality and Safety Control of Characteristic Agricultural Resources in Central Hunan Province Hunan Loudi417000 China

Due to the periodic emission of pollutants, the exposure mode of contaminants in water bodies is mostly pulse exposure, and the toxic effects of fluctuating exposure on aquatic animals are not consistent with traditional toxicological experiments of constant exposure. The toxic effects of heavy metal antimony (Sb) on the swimming behavior of Pelophylax nigromaculatus tadpoles after pulse exposure (PESb) and continuous exposure (CESb) for 28 days were explored. The mechanisms were analyzed from the perspectives of tail muscle metabolism and transcriptomics. Compared to the control group, PESb and CESb decreased the average speed of P. nigromaculatus tadpoles by 25.72 % and 18.08 %, respectively. PESb and CESb led to changes in 70 and 24 metabolites of tail muscle, respectively. PESb led to alterations in metabolic pathways related to pyrimidine metabolism, arginine biosynthesis, and glycerophospholipid metabolism. In contrast, CESb altered metabolic pathways such as alanine, aspartate, and glutamate metabolism. Compared to the control, 1225 and 1139 DEGs were identified for PESb and CESb, respectively. These DEGs were mainly associated with functions such as immune response, DNA replication, protein digestion, and absorption. It can be seen that PESb and CESb can alter the metabolism and transcriptome of the tail muscle of P. nigromaculatus tadpoles, leading to differential expression of individual movements. © 2024 Elsevier B.V.

关键词： Invertebrates

来源：评论

学校读者我要写书评

暂无评论

Investigation on the effects of CaO and CaSO4 on the properties and microstructure of geopolymer based on circulating fluidized bed fly ash

引用

Journal of Building Engineering 2025年 108卷

作者： Li, Jian Ma, Zhibin Guo, Yanxia Southeast University China State Environmental Protection Key Laboratory of Efficient Utilization Technology of Coal Waste Resources Institute of Resources and Environmental Engineering Shanxi University Taiyuan030006 China Jiangsu Province Engineering Research Center of Urban Heat and Pollution Control Southeast University China

Synthesizing geopolymers using circulating fluidized bed fly ash (CFBFA) as an alternative for traditional cement can significantly reduce CO2 emissions and mitigate the environmental hazards associated with CFBFA accumulation. CFBFA, due to in-furnace desulfurization, typically contains calcium (Ca) components like CaO and CaSO4. However, the impact of CaO and CaSO4 on the macro-properties and microstructure of CFBFA-based geopolymers requires further clarification. This research synthesized geopolymers using low-Ca CFBFA as a precursor, incorporating varying ratios of CaO and CaSO4, respectively. The effects of these additives on rheological behavior, compressive strength, freeze-thaw cycle resistance, and microstructural evolution of the geopolymers were systematically investigated. Rheological behavior followed the Herschel-Bulkley model, with CaSO4 significantly increasing yield stress and apparent viscosity compared to CaO. Adding an optimal amount of CaO (5 %) enhanced the geopolymerization reaction, achieving a maximum strength of 34.5 MPa. However, excessive CaO hindered this process, which caused volume expansion, pore cracking, and reduced compressive strength as well as freeze-thaw cycle resistance. Adding CaSO4 promoted the formation of ettringite, which served as a filler and support, significantly enhancing compressive strength. However, after freeze-thaw cycles, ettringite was damaged, resulting in a substantial decrease in freeze-thaw cycle resistance. The findings of this research offer valuable guidance and insights for the preparation of CFBFA-based geopolymers. © 2025 Elsevier Ltd

关键词： Thawing

来源：评论

学校读者我要写书评

暂无评论

Corrigendum to "Degradation of aqueous methylparaben by non-thermal plasma combined with ZnFe2O4-rGO nanocomposites: Performance, multi-catalytic mechanism, influencing factors and degradation pathways" [Chemosphere 271 (2021) 129575]

引用

Chemosphere 2025年 372卷 143615页

作者： Feng, Jingwei Nian, Peng Peng, Lu Zhang, Aiyong Sun, Yabing Anhui Provincial Engineering Laboratory for Rural Water Environment and Resources School of Civil and Hydraulic Engineering Hefei University of Technology Hefei230009 China State Key Laboratory of Pollution Control & Resources Reuse School of the Environment Nanjing University Nanjing210046 China Anhui Province Key Laboratory of Industrial Wastewater and Environmental Treatment Hefei230024 China East China Engineering Science and Technology Co. Ltd. Hefei230024 China

来源：评论

学校读者我要写书评

暂无评论

Sodium alginate-mediated engineering of 3D-MnO2 architectures for efficient room-temperature formaldehyde catalytic decomposition

引用

Separation and Purification technology 2025年 370卷

作者： Cheng, Zeyi Lu, Jingling Zhang, Huiyu Liu, Fang Ran, Wang Xu, Wenxuan Yu, Tao Chen, Shouzhi Rong, Shaopeng Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological Engineering Nanjing University of Science and Technology Nanjing210094 China China Testing & Certification International Group Co. Ltd. Beijing100024 China Beijing Chehejia Automobile Technology Co. Ltd Beijing101399 China

Catalytic decomposition of formaldehyde at ambient temperature represents a promising technique for eliminating indoor formaldehyde pollution and improving indoor air quality. The employment of three-dimensional (3D) structured catalysts to facilitate this process is a topic worthy of investigation thanks to its rapid mass transfer and highly exposed active sites. Herein, two kinds of 3D-structured MnO2 were fabricated with the assistance of exogenous assembly force provided by sodium alginate (SA). In comparison to pure SA-assembled 3D catalyst and non-3D-structured MnO2 powder, 3D-MnO2 catalysts demonstrate unparalleled efficacy in HCHO elimination. Due to the porous 3D network with large spatial volume, 3D-MnO2 catalysts offer significant enhancements in mass transfer and the exposure of active sites, allowing for not only greater adsorption of HCHO, but also generation of additional active oxygen species to further oxidize HCHO. Surface –OH groups as the key factor affecting the catalytic activity at ambient temperature. The content and regeneration ability determine the performance of the catalyst at low temperature. 3D-δ-MnO2 demonstrates a distinctive capacity for the adsorption and activation of the water molecules, which further supplements the hydroxyl groups consumed in the decomposition of HCHO. This work proposes a simple method for the preparation of 3D catalysts and elucidates the underlying mechanisms responsible for their superior performance, thereby providing guidance for the development of indoor air purification materials. © 2025 Elsevier B.V.

关键词： Indoor air pollution

来源：评论

学校读者我要写书评

暂无评论

Microbially-driven phosphorus cycling and its coupling mechanisms with nitrogen cycling in mangrove sediments

引用

Science of the Total Environment 2025年 958卷 178118页

作者： Liu, Fei Zeng, Jiaxiong Ding, Jijuan Wang, Cheng He, Zhili Liu, Zhiwei Shu, Longfei School of Life Sciences Jiaying University Meizhou514015 China Conservation and Utilization Laboratory of Mountain Characteristic Resources in Guangdong Province Meizhou514015 China School of Environmental Science and Engineering Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology State Key Laboratory for Biocontrol Sun Yat-sen University Guangzhou510275 China Zhuhai509082 China

The phosphorus (P) cycle plays a crucial role in the biogeochemical cycling of mangrove sediments. However, the diversity of microbially-driven P-cycling and its coupling with nitrogen (N)-cycling remain poorly understood. In this study, we used metagenomic approaches to investigate microbial P-cycling and its potential interactions with N-cycling in mangrove sediments. Our results revealed that pH, total carbon, and total nitrogen were key environmental factors influencing the diversity of P-cycling microbial communities. Phosphorus metabolic pathways differed among mangrove sediment depths. In surface sediments (0–5 cm), microbial communities primarily acquired readily available inorganic phosphorus, whereas, in deeper sediments (>60 cm), they hydrolyzed more persistent triphosphates, reabsorbed nucleotides, and sourced free phosphate, reflecting a shift in phosphorus transport modes. We also identified glutamate metabolism as a potential pathway linking P-cycling with N-cycling, with these functions co-occurring in both contigs and genomes. Additionally, the diversity of microbial communities associated with the P-cycling increased with sediment depth, suggesting that microbially-driven P-cycling diversifies as depth increases. This study provides new insights into P-cycling and its potential coupling with N-cycling through glutamate metabolism, its coupling with N-cycling through glutamate metabolism. © 2024 Elsevier B.V.

关键词： Abiotic

来源：评论

学校读者我要写书评

暂无评论

Reversing inhibition to promotion in phenol-ammonium metabolism via algal-microbial fuel cell: Mechanisms of phenol-ammonium interaction and synergistic removal

引用

Journal of Hazardous Materials 2025年 493卷 138417页

作者： Liu, Yaqi Zheng, Mengqi Lv, Longyi Chen, Guowei Wang, Chengye Hu, Zhenhu Feng, Jingwei Xie, Binghan Han, Hongjun Wang, Wei Department of Municipal Engineering School of Civil Engineering Hefei University of Technology Hefei230009 China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology Harbin150090 China Anhui Province Key Laboratory of Industrial Wastewater and Environmental Treatment Hefei230024 China Anhui Provincial Engineering Laboratory for Rural Water Environment and Resources Hefei230009 China Tianjin Key Laboratory of Clean Energy and Pollution Control School of Energy and Environmental Engineering Hebei University of Technology Tianjin300401 China

Addressing the challenge of metabolic inhibition between phenol and ammonium in coal gasification wastewater (CGW), this study introduced a novel algal-microbial fuel cell (AMFC). It combined the advantages of electroactive bacteria and Synechocystis to achieve synergistic metabolism, establishing a cooperative mechanism for pollutant separation and enhanced transformation to achieve the mutual promotion of phenol and ammonium removal. Remarkably, raising phenol to 1500 mg COD/L boosted ammonium removal by 31.51 % in AMFC, due to a consistently higher potential difference than the control, which enhanced extracellular electron transfer (EET) via conductive nanowire and drove ammonium migration. Similarly, elevating ammonium concentration to 150 mg/L resulted in an 11.79 % increase in phenol removal efficiency, driven by superior solution conductivity and EET, as well as more electron acceptors (oxygen) from the algal cathode. This system challenged the conventional understanding of the antagonistic relationship between phenol and ammonium. Under high phenol conditions, the electroactive bacteria Clostridium sensu stricto 1 and Acinetobacter, Perlucidibaca formed a synergistic metabolic network, whereas Zoogloea, Ideonella, and other phenol-degrading bacteria were significantly enriched in high ammonium environments. The AMFC represented a breakthrough in reversing the metabolic inhibition between phenol and ammonium, providing a novel and energy-efficient strategy for treating complex industrial wastewater. © 2025 Elsevier B.V.

关键词： Microbial fuel cells

来源：评论

学校读者我要写书评

暂无评论

Recovery of nitrogen and phosphorus from water by ball-milled biochar composite supported by acid mine drainage sludge

引用

Journal of Industrial and Engineering Chemistry 2025年

作者： Ma, Zijie Zhao, Zhipeng Pan, Yuegui Lei, Wei Faheem, Muhammad Feng, Qianwei Zhang, Xueyang Wang, Bing College of Resources and Environmental Engineering Guizhou University Guiyang550025 China Guizhou Institute of Water Resource Science Guiyang550002 China Department of Civil Infrastructure and Environmental Engineering Khalifa University of Science and Technology Abu Dhabi127788 United Arab Emirates Key Laboratory of Karst Georesources and Environment Ministry of Education Guiyang550025 China Jiangsu Key Laboratory of Industrial Pollution Control and Resource Reuse School of Environmental Engineering Xuzhou University of Technology Xuzhou221018 China

Excessive nitrogen and phosphorus can lead to the eutrophication of water. Biochar, derived from agricultural and forestry waste, is effective for water eutrophication control, but its adsorption performance requires enhancement through process optimization. To explore efficient methods for the recovery of nitrogen and phosphorus, pinecone biochar was mixed with acidic mine drainage (AMD) sludge through ball milling to produce modified pinecone biochar (MPB). Batch adsorption experiments and SEM-EDS, FTIR, and XRD tests were employed to investigate co-adsorption performance and mechanisms of MPB for ammonium and phosphate. The results showed that low-temperature pyrolysis (300 °C) facilitated the adsorption of ammonium and phosphate by MPB. The adsorption process followed the Elovich model, suggesting that heterogeneous chemisorption was the primary mechanism. Ammonium adsorption followed the Langmuir model, and phosphate adsorption followed the Freundlich model. The recovery rates for ammonium and phosphate by MPB reached 29.58 % and 96.19 %, respectively. Site energy analysis confirmed that ion exchange and surface precipitation were the main adsorption mechanisms. The presence of Fe3+ and Al3+ in AMD sludge facilitated phosphate precipitation, while the increased functional group content in MPB enhanced ammonium adsorption. This study provides a potential pathway for the sustainable use of forestry waste and industrial waste as well as for nitrogen and phosphorus recovery. © 2025 The Korean Society of Industrial and Engineering Chemistry

关键词： Eutrophication

来源：评论

学校读者我要写书评

暂无评论

Cysteine and Dialysis Mediated Inhibition of Dynamic Changes in Glycosylated Egg White Protein During Storage

SSRN

引用

SSRN 2025年

作者： Guo, Lulu Zhang, Wanqiu Zhang, Fan Hu, Shende Zhao, Qianwen Chang, Cuihua Li, Junhua Zhu, Min Gu, Luping Yang, Yanjun Su, Yujie Huang, Zijian State Key Laboratory of Food Science and Resources School of Food Science and Technology Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province Jiangnan University Jiangsu Wuxi214122 China College of Bioscience and Biotechnology Hunan Agricultural University Hunan Changsha410128 China Hunan Jiapin Jiawei Technology Development Group Co. LTD Hunan Engineering & Technology Research Center for Food Flavors and Flavorings Hunan Jinshi415400 China

Glycosylation is commonly used to improve the solubility and functionality of egg white protein (EWP), but glycosylated EWP is prone to quality deterioration during storage. To enhance its storage stability, cysteine (Cys) addition and dialysis desugar treatment were applied to xylo-oligosaccharide (XOS) glycosylated EWP (GEW) in accelerated storage examinations. Both Cys addition and dialysis minimized changes in soluble protein content, color difference, and particle size during storage. Further, they inhibited the Maillard reaction and the accumulation of its intermediate products. Cys addition effectively maintained protein structures and prevented protein crosslinking. However, dialysis lost the filling and protective effect of free sugars, lowering the denaturation temperature of ovalbumin. Cys and dialysis effectively maintained the stability of emulsifying properties, while cysteine better preserved gelation. Overall, both Cys addition and dialysis effectively enhanced the storage stability of GEW, with Cys proving to be more effective. © 2025, The Authors. All rights reserved.

关键词： Reaction intermediates

来源：评论

学校读者我要写书评

暂无评论

Interactions of biomass constituents and the effect on the hydrogen storage molecules during fast pyrolysis

引用

Energy 2025年 328卷

作者： Xie, Wensheng Ullah, Fahim Lu, Yongming Yao, Yuhang Zhang, Ye Shui Zhang, Yutao Ji, Guozhao Li, Aimin Key Laboratory of Industrial Ecology and Environmental Engineering School of Environmental Science and Technology Dalian University of Technology Dalian116000 China School of Environment Henan Normal University Key Laboratory of Yellow River and Huai River Water Environment and Pollution Control Ministry of Education Henan Xinxiang453007 China School of Engineering University of Aberdeen AberdeenAB24 3UE United Kingdom Zhejiang Province Key Laboratory of Soil Contamination Bioremediation School of Environment and Resources Zhejiang Agriculture and Forestry University Hangzhou311300 China

Biomass pyrolysis oils are anticipated to serve as a source of bio-based platform chemicals and hydrogen storage molecules, primarily from the decomposition of holocellulose (cellulose and hemicellulose). This study examined the influence of component interactions among the thermal behavior, product distribution, and gas composition of the samples. The results show that in the cellulose and hemicellulose mixtures, the increase in hemicellulose promotes gas and solid production while inhibiting oil yield. However, the increasing hemicellulose reduced the production of aldehydes, acids, and ketones (a result corroborated by infrared characterization), including hydrogen storage molecules, with the most pronounced promotion occurring only in samples with cellulose to hemicellulose equivalence ratio of 2:1. Furthermore, lignin was added to samples with a cellulose-to-hemicellulose ratio of 1:1. The results demonstrated that the increasing lignin also promoted gas and solid production while inhibiting oil yield. Notably, even small amounts of lignin significantly increase the formation of small and hydrogen storage molecules by activating holocellulose through lignin side chain groups. However, a further increase in lignin also reduced the generation of hydrogen storage molecules. This study offers valuable insights for selecting proper raw materials for the generation of platform chemicals and hydrogen storage molecules. © 2025 Elsevier Ltd

关键词： Cracking (chemical)

来源：评论

学校读者我要写书评

暂无评论

An XGBoost-SHAP framework for identifying key drivers of urban flooding and developing targeted mitigation strategies

引用

Ecological Indicators 2025年 175卷

作者： Fu, Xiaoping Wang, Mo Zhang, Dongqing Chen, Furong Peng, Xiaotao Wang, Lie Tan, Soon Keat College of Architecture and Urban Planning Guangzhou University Guangzhou510006 China Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control School of Environmental Science and Engineering Guangdong University of Petrochemical Technology Guangdong Maoming525000 China Department of Construction Economics and Management Guangzhou Urban Construction Vocational School Guangzhou510006 China Key Laboratory of Natural Resources Monitoring in Tropical and Subtropical Area of South China Ministry of Natural Resources Guangzhou510663 China Art School Hunan University of Information Technology Hunan Changsha410151 China School of Civil and Environmental Engineering Nanyang Technological University Singapore639798 Singapore

Urban flooding is a multifaceted and severe issue, exacerbated by global climate change and urban expansion. Hence, it is imperative to investigate effective strategies for mitigating the urban flooding risk. This research proposes an innovative framework to recognize the driving factors and evaluate the impact of land cover changes on urban flooding, using a machine learning simulation model in the Guangdong-Hong Kong-Macao Greater Bay Area (GBA). The results indicated that approximately 19.8% of the investigated areas are exposed to high-risk, predominantly in the densely populated urban center of the GBA. In terms of identifying driving factors, impervious surface percentage (ISP) and fractional vegetation cover (FVC) are the primary driving factors of urban flooding. Converting impervious surface (IS) into green space (GS), the areas exposed at medium- and high-risk of flooding in the urban–rural fringe were significantly reduced, while no significant alterations were observed in the areas at very high-risk induced by urban flooding in the central city. By contrast, converting GS into IS significantly increased the areas exposed to very high-risk in the central city. In addition, we proposed optimization strategies for effectively mitigating urban flooding, based on the distribution and regional characteristics of flooding in the central city, rural–urban fringe and rural areas, respectively. This study provides urban planners and designers with valuable insights into how land cover management and green infrastructure can be leveraged to address urban flooding, thus offering practical guidance for sustainable urban development in rapidly urbanizing regions. © 2025

关键词： Urban growth

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：