检索结果-内蒙古大学图书馆

Sustainable nexus for treating acid mine drainage: How does bio-alkali matrix impact acidity neutralization and heavy metal removal?

引用

Environmental technology and Innovation 2025年 39卷

作者： Peng, Cong Zeng, Li Liu, Yonghong Zhang, Zhenyu Tang, Jiayi Liu, Zhenghua Yang, Zhaoyue Yin, Huaqun Ibrahim, I.A. Zhang, Ke Yang, Zhendong School of Architecture and Civil Engineering Chengdu University Sichuan Chengdu610106 China Sichuan Provincial Engineering Research Center of City Solid Waste Energy and Building Materials Conversion and Utilization Technology Sichuan Chengdu610106 China State Key Laboratory of Desert and Oasis Ecology Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Urumqi830011 China School of Minerals Processing and Bioengineering Central South University Hunan Changsha410083 China Central Metallurgical Research and Development Institute Cairo11421 Egypt CHINA MCC5 GROUP CORP.LTD. Sichuan Chengdu610000 China

Acid mine drainage (AMD), characterized by high acidity and elevated concentrations of heavy metals, poses a persistent threat to ecological systems. Conventional neutralizers (NaOH, Na2CO3, Ca(OH)2) raise pH effectively but generate large sludge volumes and incur high operating costs. Here, three urease-positive microbial consortia, enriched from soil and municipal activated sludge, were cultivated with urea to produce bio-alkali matrices (BAM-A/B/C, final pH 9.3). Abundant –CONH2, –NH2, –OH, and –COOH groups capable of chelating metal ions were found in BAM, suggesting alkaline buffering is complemented by ligand-mediated metal sequestration. When each BAM was mixed with AMD at a 3:10 vol ratio, the effluent pH stabilized at 7 and removal efficiencies reached ∼100 % for Al, Fe, Cr, Cd;> 90 % for As, V, Co, Ni;79–80 % for Cu;and 60 – 62 % for Mn. Geochemical analysis identified Fe/Al hydroxysulfates and organo-metal complexes as dominant precipitates. A full cost comparison showed BAM-A lowered treatment expenses to 35.5 RMB per m3, which is 12 % below NaOH and 26 % below Ca(OH)2, while reducing sludge generation. Coupling BAM with sulfate-reducing bacterial systems is advisable to enhance Mn and SO42- removal. Overall, BAM provides an economical and environmentally sustainable alternative for AMD neutralization by uniting alkaline buffering with organic complexation. © 2025 The Authors

关键词： Iron analysis

来源：评论

学校读者我要写书评

暂无评论

First result from the Jinping Underground Nuclear Astrophysics experiment JUNA:precise measurement of the 92 keV ^(25)Mg(p,γ)^(26)Al resonance

引用

Science Bulletin 2022年第2期67卷 125-132,M0003页

作者： Jun Su Hao Zhang Zhihong Li Paolo Ventura Yunju Li Ertao Li Chen Chen Yangping Shen Gang Lian Bing Guo Xinyue Li Liyong Zhang Jianjun He Yaode Sheng Yinji Chen Luohuan Wang Long Zhang Fuqiang Cao Wei Nan Weike Nan Gexing Li Na Song Baoqun Cui Lihua Chen Ruigang Ma Zhicheng Zhang Taoyu Jiao Bingshui Gao Xiaodong Tang Qi Wu Jiaqing Li Liangting Sun Shuo Wang Shengquan Yan Junhui Liao Youbao Wang Sheng Zeng Ding Nan Qiwen Fan Ningchun Qi Wenliang Sun Xuyuan Guo Peng Zhang Yunhua Chen Yong Zhou Jifang Zhou Jinrong He Changsong Shang Mingchuan Li Jianping Cheng Weiping Liu JUNA Collaboration China Institute of Atomic Energy P.O.Box 275(10)Beijing 102413China Key Laboratory of Beam Technology of Ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 101408China INAF Osservatorio Astronomico di RomaVia Frascati 33Monte Porzio Catone(RM)00077Italy College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment Institute of Space SciencesShandong UniversityWeihai 264209China Yalong River Hydropower Development Company Chengdu 610051China 不详

The ^(25)Mg(p,γ)^(26)Al reaction plays an important role in the study of cosmic 1.809 MeV γ-ray as a signature of ongoing nucleosynthesis in the *** astrophysical temperature around 0.1 GK,the ^(25)Mg(p,γ)^(26)Al reaction rates are dominated by the 92 keV resonance capture *** report a precise measurement of the 92 keV ^(25)Mg(p,γ)^(26)Al resonance in the day-one experiment at Jinping Underground Nuclear Astrophysics experiment(JUNA)facility in the China Jinping Underground laboratory(CJPL).The resonance strength and ground state feeding factor are determined to be 3.8±0.3×10^(-10) eV and 0:660:04,*** results are in agreement with those reported in the previous direct underground measurement within uncertainty,but with significantly reduced ***,we recommend new ^(25)Mg(p,γ)^(26)Al reaction rates which are by a factor of 2.4 larger than those adopted in REACLIB database at the temperature around 0.1 *** new results indicate higher production rates of ^(26g)Al and the cosmic 1.809 MeV γ-*** implication of the new rates for the understanding of other astrophysical situations is also discussed.

关键词： Nuclear astrophysics Underground laboratory Cosmic c ray Resonance reaction 26Al

来源：评论

学校读者我要写书评

暂无评论

2D Inversion of Frequency-domain Electromagnetic Data Generated by Line Current Source

2D Inversion of Frequency-domain Electromagnetic Data Genera...

引用

作者： Xiaokang Deng Xiaozhong Tong Hunan Provincial Key Laboratory of Hydropower Development Key Technology Mid-south Design and Research Institute School of Civil Engineering Hunan University of Technology School of Geosciences and Info-Physics Central South University

The inversion of electromagnetic data is an inherently non-unique and unstable problem due to the data noises and incomplete data coverage, which means different geo-electrical models could fit the observed data at the same level. A stable solution of an ill-posed inverse problem can be obtained by the regularization methods in which some desired structure are imposed to stabilize the inverse problem. We have developed an algorithm to invert frequency-domain electromagnetic data generated by a line current source for a 2 D model of the earth. To stabilize the inversion, we adopt a smoothness-constraint approach for the model parameters and adjust the regularization parameter objectively using an adaptive regularization parameter technique. For calculating the sensitivities using any of the accurate methods will be very time-consuming, we applied the adjoint-equation approximate method. By means of the numerical examples using synthetic data, we have demonstrated that the inversion method can be effectively to reconstruct the subsurface resistivity structure.

关键词： Inversion of Frequency-domain Electromagnetic Data Generated by Line Current Source domain

来源：评论

学校读者我要写书评

暂无评论

Phytohormone dynamics in developing endosperm influence rice grain shape and quality

引用

Journal of Integrative Plant Biology 2020年第10期62卷 1625-1637页

作者： Xiao-Fan Zhang Jian-Hua Tong Ai-Ning Bai Chun-Ming Liu Lang-Tao Xiao Hong-Wei Xue School of Life Science and Technology Shanghai Tech UniversityShanghai 201210China Hunan Provincial Key Laboratory of Phytohormones and Growth Development Hunan Agricultural UniversityChangsha 410128China Key Laboratory of Plant Molecular Physiology Institute of Botanythe Chinese Academy of SciencesBeijing 100093China Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China Joint Center for Single Cell Biology/School of Agriculture and Biology Shanghai Jiao Tong UniversityShanghai 200240China National Key Laboratory of Plant Molecular Genetics CAS Center for Excellence in Molecular Plant SciencesShanghai Institute of Plant Physiology and Ecologythe Chinese Academy of SciencesShanghai 200032China

Hormones are important signaling molecules regulating developmental processes and responses to environmental stimuli in higher *** endosperm,the portion of the seed surrounding the embryo,is the main determinant of rice grain shape and yield;how-ever,the dynamics and exact functions of phyto-hormones in developing endosperm remain *** a systemic study including transcriptome analysis,hormone measurement,and transgene-based endosperm-specific expression of phytohormone bio-synthetic enzymes,we demonstrated that dynamic phytohormone levels play crucial roles in the developing rice endosperm,particularly in regard to grain shape and *** detected diverse,differential,and dra-matically changing expression patterns of genes related to hormone biosynthesis and signaling during endosperm development,especially at early devel-opmental *** chromatography measure-ments confirmed the dynamic accumulation of hor-mones in developing *** transgenic analysis performed on plants expressing hormone bio-synthesis genes driven by an endosperm-specific pro-moter revealed differential effects of the hormones,especially auxin and brassinosteroids,in regulating grain shape and *** studies help elucidate the dis-tinct roles of hormones in developing endosperm and provide novel and useful tools for influencing crop seed shape and yield.

关键词： fir grain shape

来源：评论

学校读者我要写书评

暂无评论

SSB-aptamer interaction-triggered SiO 2 NPs/HCR cascade signal amplification strategy for high-sensitivity aflatoxin B1 detection

引用

Microchemical Journal 2025年 214卷

作者： Jie Zou Zhenghong Jiang Jiahao Wu Dai Lu Qian Zhao College of Science Hunan College For Preschool Education Changde 415000 China Laboratory of Micro & Nano Biosensing Technology in Food Safety Hunan Provincial Key Laboratory of Food Science and Biotechnology College of Food Science and Technology Hunan Agricultural University Changsha 410128 China TCM and Ethnomedicine Innovation & Development International Laboratory School of Pharmacy Hunan University of Chinese Medicine Changsha 410208 China

Aflatoxin B1 (AFB1), a highly toxic and carcinogenic mycotoxin, is commonly found in food products and presents substantial risks to both human and animal health. To ensure food safety, high-performance analytical methods are essential for detecting AFB1. This study introduces a novel high-sensitivity detection approach for AFB1, based on the interaction between aptamers and single-stranded binding protein (SSB), with SiO 2 nanoparticles (SiO 2 NPs) serving as carriers for hybridization chain reaction (HCR)-mediated cascade signal amplification. In the presence of AFB1, the aptamer within the SiO 2 @DNA detection probe binds to AFB1, forming a complex that remains in the supernatant. The introduction of nicking endonuclease (***) cleaves the hybridized DNA sequence, thereby exposing the HCR initiation sequence on the SiO 2 NPs. This triggers HCR, resulting in the formation of a long double-stranded DNA polymer. The addition of SYBR Green I generates the fluorescent signal output. The feasibility and optimization of the method were validated through a series of experiments, which revealed a linear detection range from 10 −16 to 10 −12 g/mL and an ultra-low detection limit of 6.5448 × 10 −17 g/mL. The method demonstrates exceptional selectivity and anti-interference performance, remaining unaffected by common interfering toxins. Moreover, when applied to real food samples, it exhibited strong agreement with commercial ELISA kits, underscoring its practical potential for food safety monitoring and offering a promising strategy to safeguard public health.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Wind tunnel test study on influence of wind-guide barriers on the wind field above track on bridge

引用

Journal of Railway Science and Engineering 2023年第6期20卷 1963-1973页

作者： Jiang, Shuo He, Xuhui Zou, Yunfeng Jin, Yixin Lü, Na School of Civil Engineering Central South University Changsha410075 China Hunan Provincial Key Laboratory for Disaster Prevention and Mitigation of Rail Transit Engineering Structure Changsha410075 China Chengdu Alga Engineering New Technology Development Co Ltd Chengdu610083 China

Wind barrier is a common wind protection facility for high-speed railway bridges. The new type of wind guide barriers can reduce the wind load of the barrier and ensure the safety of the wind barrier and bridge structures. To clarify the wind protection mechanism of the wind-guide barrier, the turbulence and the wind speed components in three directions above the bridgewere tested by 1:15 segmental model wind tunnel test using the self-developed mobile test system and Cobra anemometer. The influence of the wind guide barrier parameters, the inclination of the wind guide surface 1, the height of the wind guide surface 2 and the barrier lower size on three-dimensional wind field characteristicson the bridge were studied. The equivalent wind characteristic indices under different test conditions were obtained by three equivalent methods, which provides a basis for the design of wind guide barrier parameters. The research results show that the wind guide barrier can effectively reduce the wind speed on the bridge, and has a strong airflow guiding effect. The maximum horizontal wind speed ratio and vertical wind speed ratio can reach 0.25 and 0.17, respectively. The angle change of wind guide surface 1 has little impact on the wind field on the bridge, and the height of wind guide surface 2 has a significant impact on the lateral and vertical wind speed. The lateral wind speed ratio increases by more than 0.1 when the height of wind guide surface 2 is reduced. Increasing the size of the lower part of the wind guide barrier can enhance the shielding effect and wind guide effect, and can inhibit the intensity of the jet strength near the bridge deck. The shielding effect is the dominant factor of the wind guide barrier, but the deflecting effect of the wind guide barrier on the airflow also affects the wind protection effect to a certain extent. The extreme value of the difference between the evaluation results equivalent shielding parameters considering the three-dimensio

关键词： Wind tunnels

来源：评论

学校读者我要写书评

暂无评论

Multifunctional Prussian blue nanoparticles loading with Xuetongsu for efficient rheumatoid arthritis therapy through targeting inflammatory macrophages and osteoclasts

引用

Asian Journal of Pharmaceutical Sciences 2025年第3期20卷

作者： Yasi Deng Bin Li Hao Zheng Ling Liang Yupei Yang Shiqi Liu Mengyun Wang Caiyun Peng Bin Liu Wei Wang Huanghe Yu TCM and Ethnomedicine Innovation & Development International Laboratory Innovative Materia Medica Research Institute School of Pharmacy Hunan University of Chinese Medicine Changsha 410208 China Hunan Provincial Key Laboratory of the Research and Development of Novel Pharmaceutical Preparations School of Pharmacy Changsha Medical University Changsha 410219 China Science and Technology Innovation Center Hunan University of Chinese Medicine Changsha 410208 China College of Biology Hunan University Changsha 410082 China

Abnormal activation of macrophages and osteoclasts (OCs) contributes significantly to rheumatoid arthritis (RA) development by secretion of numerous inflammatory factors. Notably, these cells exhibit significant upregulation of folate receptor proteins on their surfaces. Unfortunately, there is a current lack of safe and effective therapeutic drugs for RA. Xuetongsu (XTS), a triterpenoid compound extracted from Kadsura heteroclita Roxb Craib, has demonstrated the ability to significantly inhibit the proliferation of RA fibroblast-like synoviocytes (RAFLS). However, its clinical application is hampered by poor targeting and short half-life. To address these drawbacks, we previously developed a nano-drug system named HRPS nanoparticles (NPs), which effectively targets RAFLS and inhibits synovial hyperplasia. However, this system overlooked the essential role of OCs in RA-related bone destruction. Therefore, we designed a novel folate-modified biomimetic Prussian blue (PB)-XTS NP (FMPX NP) for the selective delivery of XTS into inflammatory macrophages and OCs. The NP exhibits an excellent photothermal effect when assisted by laser irradiation, facilitating targeted release of XTS within inflammatory macrophages and OCs. The synergistic anti-inflammatory and reactive oxygen species scavenging effects of PB NPs and XTS are mediated by the inhibition of the NF-κB signaling pathway in inflammatory macrophages and RANK/RANKL/NFATc1 signaling pathway in OCs. In vivo experiments showed that FMPX NPs extended the half-life of XTS by 2.32 times, decreased hind foot swelling from 12.10 ± 0.49 mm to 8.24 ± 0.09 mm in the model group, and prevented bone damage. In conclusion, this study introduces a novel dual-targeted nano-based therapy for RA joints and highlights its potential for biochemical photothermal triple therapy for RA. FMPX NPs inhibit arthritis-related inflammation and bone destruction through a dual-target strategy, providing new insights for targeted drug therapies

关键词： Rheumatoid arthritis Xuetongsu Nano drug delivery system Macrophage Osteoclast

来源：评论

学校读者我要写书评

暂无评论

Rainstorm-Induced Flood Risks Exacerbated by Dual Climatic-Human Impacts in the Lower Yellow River Basin of China

SSRN

引用

SSRN 2025年

作者： Hu, Lei Zhang, Qiang Wang, Gang Xu, Chong-Yu Singh, Vijay P. Liu, Da Zhang, Kaiwen Feng, Anlan Ma, Hushuang Faculty of Geographical Science Beijing Normal University Beijing100875 China Advanced Interdisciplinary Institute of Environment and Ecology Guangdong Provincial Key Laboratory of Wastewater Information Analysis and Early Warning Beijing Normal University Zhuhai China Guangdong Basic Research Center of Excellence for Ecological Security and Green Development School of Ecology Environment and Resources Guangdong University of Technology Guangzhou510006 China Department of Geosciences and Hydrology University of Oslo Oslo Norway College StationTX United States National Water and Energy Center UAE University Al Ain United Arab Emirates Guangdong Research Institute of Water Resources and Hydropower Guangzhou510635 China

Study Region: the Yellow River Basin (YRB) in *** Focus: Anthropogenic warming intensifies the water cycle, increasing extreme precipitation and rainstorm-induced flood (RIF) risks, challenging YRB’s sustainable development. Future flood risks under climate change and urbanization remain insufficiently understood. We developed an RIF risk evaluation framework with 9 indicators, covering hazard, sensitivity, and vulnerability. Using AHP and EW methods, we assessed RIF risks in the YRB under SSP245 and SSP585 scenarios over different *** Hydrological Insights for the Region: We found decreasing RIF hazard along the southeast to northwest direction, and moderate and high RIF hazard in the middle and lower YRB. With the RIF risk for the historical period as the base, the RIF hazard increased by 8.34%-18.29% (11.66%-28.93%) under the SSP245 (SSP585) scenarios. High vulnerability was identified in the middle and lower YRB, particularly over urbanized regions. Compared to the historical period, the vulnerability increased by 30.46%-79.39% (29.14%-93.18%) under the SSP245 (SSP585) scenarios. Specifically, the RIF risks were precipitously high in the provinces of the middle and lower YRB, such as Shandong, Henan, and Shaanxi, and the RIF risk increased by 47.00%-91.50% (50.67%-169.51%) under the SSP245 (SSP585) scenarios in the YRB. The increase in RIF risk over Henan and Shandong reached 58.02%-283.05%, larger than in the historical period. © 2025, The Authors. All rights reserved.

关键词： Storms

来源：评论

学校读者我要写书评

暂无评论

Cu-Catalyzed Radical Addition and Oxidation Cascade: Unsymmetrical Trimerization of Indole to Access Isotriazatruxene

引用

Organic letters 2022年第7期24卷 1502-1506页

作者： Ting Deng Wenxin Yan Xiaoyu Liu Guizhimeng Hu Weilie Xiao Shuai Mao Jun Lin Yinchun Jiao Yi Jin Key Laboratory of Medicinal Chemistry for Natural Resource Ministry of Education Yunnan Provincial Center for Research & Development of Natural Products School of Chemical Science and Technology Yunnan University Kunming 650091 P. R. China. School of Chemistry and Chemical Engineering Key Laboratory of Theoretical Organic Chemistry and Functional Molecular Ministry of Education Hunan University of Science and Technology Xiangtan 411201 P. R. China. School of Life and Pharmaceutical Sciences Dalian University of Technology Dalian 116081 P. R. China. Department of Medicinal Chemistry School of Pharmacy Xi'an Jiaotong University Xi'an 710061 China.

Herein we describe a Cu-catalyzed radical addition and oxidation cascade reaction for the chemo/regioselective synthesis of unsymmetrical indole trimers (isotriazatruxenes, -TATs) from easily available starting materials. The -TATs exhibited blue fluorescence in various solvents with different fluorescence intensities and showed good structural expansibility. A wider range of products could be used in optoelectronic materials by developing suitable derivatives.

关键词： Fluorescence Substituents Indoles Chemical reactions Solvents

来源：评论

学校读者我要写书评

暂无评论

PORK PRODUCTION SYSTEMS IN CHINA:A REVIEW OF THEIR development,CHALLENGES AND PROSPECTS IN GREEN PRODUCTION

引用

Frontiers of Agricultural Science and Engineering 2021年第1期8卷 15-24页

作者： Shuai ZHANG Xin WU Dandan HAN Yong HOU Jianzhuang TAN Sung Woo KIM Defa LI Yulong YIN Junjun WANG State Key Laboratory of Animal Nutrition Ministry of Agriculture and Rural Affairs Feed Industry CentreCollege of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China Key Laboratory of Agro-ecological Processes in the Subtropical Region Institute of Subtropical Agriculturethe Chinese Academy of SciencesNational Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionHunan Provincial Engineering Research Center for Healthy Livestock and Poultry ProductionScientific Observation and Experimental Station of Animal Nutrition and Feed Science in the South-Central RegionMinistry of Agriculture and Rural AffairsChangsha 410125China College of Resources and Environmental Sciences National Academy of Agriculture Green DevelopmentKey Laboratory of Plant-Soil Interactions(Ministry of Education)China Agricultural UniversityBeijing 100193China Tech-bank Food Co. LtdNanjing 211800China Department of Animal Science College of Agriculture and Life SciencesNorth Carolina State UniversityRaleighNC 27695USA

This paper reviews the changes in pork production in China,the largest pork producing and consuming nation in the *** pork sector in China has changed dramatically since the 1990s,with large-scale intensive pork production systems replacing the former,exclusively family-based pork production *** breeding,feeding,vaccinating,and management technologies are widely used ***,smallholders still account for a large proportion of the total *** intensification and specialization of the pork sector is expected to continue in the future,but there is increasing awareness and pressure to develop more environmentally-sustainable production *** relative shortage of domestically produced feed,the low utilization efficiency of feed ingredients,the large emissions of nitrogen and phosphorus to the environment,the high use of antibiotics,and the presence of residual metals in manures are very large challenges for the pork sector *** solve these problems,techniques including new feed resource utilization,precise feeding,low-protein diets,alternatives to antibiotics and increased manure recycling are all important topics and research directions *** new techniques and management approaches,it is possible to build more sustainable pork production systems in China.

关键词： China feed pork production sustainability

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：