检索结果-南通市图书馆

Anammox-based technologies:A review of recent advances,mechanism,and bottlenecks

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2025年第2期148卷 151-173页

作者： Mabruk Adams Eliasu Issaka Chongjun chen School of Environmental Science and Engineering Suzhou University of Science and TechnologySuzhou 2155009China Civil Engineering School of EngineeringCollege of Science and EngineeringUniversity of GalwayGalway H91 TK33Ireland School of Environmental and Safety Engineering Institute of Environmental Health and Ecological SecurityJiangsu UniversityZhenjiang 212013China

The removal of nitrogen via the ANAMMOX process is a promising green wastewater treatment technology,with numerous *** incessant studies on the ANAMMOX process over the years due to its long start-up and high operational cost has positively influenced its technological advancement,even though at a rather slow *** the moment,relatively newANAMMOX technologies are being developedwith the goal of treating lowcarbon wastewater at low temperatures,tackling nitrite and nitrate accumulation and methane utilization from digestates while also recovering resources(phosphorus)in a sustainable *** review compares and contrasts the handful of ANAMMOX-based processes developed thus far with plausible solutions for addressing their respective bottlenecks hindering full-scale ***,future prospects for advancing understanding of mechanisms and engineering application of ANAMMOX process are *** a whole,technological advances in process design and patents have greatly contributed to better understanding of the ANAMMOX process,which has greatly aided in the optimization and industrialization of the ANAMMOX *** review is intended to provide researchers with an overview of the present state of research and technological development of the ANAMMOX process,thus serving as a guide for realizing energy autarkic future practical applications.

关键词： Anammox Commamox Denitrification Full-scale Partial nitrification

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

高水平学习者汉语非宾格结构加工的眼动研究

世界汉语教学 2025年第1期39卷 116-128页

作者：朱秀杰丛凤娇陈宝国宁波大学外国语学院华南师范大学脑科学与康复医学研究院北京师范大学心理学部

本研究采用眼动实验,通过比较高水平学习者和汉语母语者在论元基础生成位置和论元句法移位位置两种实验条件下的眼动指标,研究论元句法位置对高水平学习者汉语非宾格动词加工过程的影响。研究发现:(1)高水平学习者在两种实验条件下的首... 详细信息

本研究采用眼动实验,通过比较高水平学习者和汉语母语者在论元基础生成位置和论元句法移位位置两种实验条件下的眼动指标,研究论元句法位置对高水平学习者汉语非宾格动词加工过程的影响。研究发现:(1)高水平学习者在两种实验条件下的首次注视时间和总注视时间出现显著差异,汉语母语者在两种实验条件下的总注视时间出现显著差异;(2)高水平学习者在两种实验条件下的首次注视时间、凝视时间、回视路径时间和总注视时间均显著长于汉语母语者。研究结果表明,论元句法移位位置显著影响高水平学习者的早期加工,论元基础生成位置显著影响高水平学习者的整合加工。本研究结果验证了“浅层结构假说”和“统一竞争模型”的部分观点。

关键词：汉语非宾格动词论元结构眼动浅层结构假说统一竞争模型

Synergistic effect of silicon availability and salinity on metal adsorption in a common estuarine diatom

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2025年第2期148卷 364-374页

作者： Fengyuan chen Jie Ma Ke Pan SZU-HKUST Joint PhD Program in Marine Environmental Science Shenzhen UniversityShenzhen 518060China Shenzhen Key Laboratory of Marine Microbiome Engineering Institute for Advanced StudyShenzhen UniversityShenzhen 518060China Department of Ocean Science The Hong Kong University of Science and TechnologyHong Kong 999077China

Increasing nitrogen and phosphorus discharge and decreasing sediment input have made silicon(Si)a limiting element for diatoms in *** in nutrient structure and salinity fluctuation can greatly affect metal uptake by estuarine ***,the combined effects of Si and salinity on metal accumulation in these diatoms have not been *** this study,we aimed to investigate how salinity and Si availability combine to influence the adsorption of metals by a widely distributed diatom Phaeodactylum *** data indicate that replete Si and low salinity in seawater can enhance cadmium and copper adsorption onto the diatom *** the single-cell level,surface potential was a dominant factor determining metal adsorption,while surface roughness also contributed to the highermetal loading capacity at lower *** a combination of noninvasive micro-test technology,atomic force microscopy,X-ray photoelectron spectroscopy,and Fourier transform infrared spectroscopy,we demonstrate that the diversity and abundance of the functional groups embedded in diatom cell walls vary with salinity and Si *** results in a change in the cell surface potential and transient metal *** study provides novel mechanisms to explain the highly variable metal adsorption capacity of a model estuarine diatom.

关键词： Diatom Metal adsorption Silicon Salinity Functional group Surface potential

Correlation between grain size,mechanical properties and deformed microstructure of Fe-20Mn-6Al-0.6C-0.15Si low-density steel

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2025年第1期32卷 282-292页

作者： Qi Zhang Guang-hui chen Zheng-liang Xue Zheng-kun chen Guang Xu State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan430081HubeiChina Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan430081HubeiChina Red Eagle Novel Refractory Materials Research Institute Zhejiang Red Eagle Group Co.Ltd.Huzhou313000ZhejiangChina

The effects of austenite grain size on the deformed microstructure and mechanical properties of an Fe-20Mn-6Al-0.6C-0.15Si(wt.%)low-density steel were *** microstructure of the experimental steel after solution treatment was single austenitic *** austenite grain size increased with solution temperature and time.A model was established to show the relationship between temperature,time and austenite grain size for the experimental *** addition,as the solution temperature increased,the strength decreased,while the elongation first increased and then *** decrease in elongation after solution treatment at 1100℃ for 90 min is contributed to the over-coarse austenite ***,after solution treatment at 900℃ for 90 min,the strength-elongation product reached the highest value of 44.4 GPa%.As the austenite grain size increased,the intensity of//tensile direction fiber *** was accompanied by a decrease in dislocation density,resulting in a lower fraction of low-angle grain boundaries and a lower work hardening ***,the austenite grain size has a critical influence on the mechanical properties of the low-density *** grains lead to a lower yield strength due to the Hall-Petch effect and a lower tensile strength because of lower dislocation strengthening.

关键词： Austenitic low-density steel Solution treatment Grain size Mechanical property Deformed microstructure

Mining Subsidence Based on Integrated SBAS-InSAR and Unmanned Aerial Vehicles Technology

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Ocean University of China 2025年第1期24卷 113-129页

作者： chen Xuewei chen Jianping WANG Genhou ZHANG Qian ZHENG Yanwei School of Earth Sciences and Resources China University of GeosciencesBeijing 100083China Beijing Key Laboratory of Development and Research for Land Resources Information Beijing 100083China

The Small Baseline Subset InSAR(SBAS-InSAR)and unmanned aerial vehicles(UAVs)as common ocean-land technologies,have been extensively applied in subsidence,glacial movement,surface deformation,and maritime positioning and navigation.A novel method integrating SBAS-InSAR and UAV photogrammetry is used to analyze ground subsidence deformation in the Gesar gold mine located in Maqu,Northwest *** approach uses SBAS-InSAR to calculate two-dimensional deformation data for capturing ascending and descending *** method can provide precise information on small-sized deformations within mining *** deformation data obtained from UAVs and the vertical deformation data derived from InSAR are integrated to generate comprehensive and accurate ground subsidence data from the mining *** demonstrate that using a combined InSAR(vertical)and UAV technique to analyze surface subsidence in mining districts resolves inconsistency between the line-of-sight and deformation ***,the incoherence issue of InSAR in regions with large deformation gradients is addressed,while the inherent errors of UAV monitoring of mining surface subsidence are *** genetic algorithm(GA)-backpropagation(BP)neural network algorithm is combined with InSAR data to predict subsidence in collapsed *** observed,the GA-BP algorithm has the smallest residual under the same training ***,the GA-BP neural network model can effectively predict surface subsidence in mining areas and can be used for subsequent subsidence prediction.

关键词： SBAS-InSAR two-dimensional deformation solution UAV photogrammetry data fusion subsidence prediction

Synthesis and Photochromism of Diazocine Derivatives:Relationship Between Photoswitching Properties and Molecular Structures

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2025年第1期41卷 33-39页

作者： WANG Yaxin chen Yulan Key Laboratory of Organic Integrated Circuit Ministry of Education&Tianjin Key Laboratory of Molecular Optoelectronic SciencesDepartment of ChemistrySchool of ScienceTianjin UniversityTianjin300072P.R.China State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun130012P.R.China

We design and synthesize five novel diazocine derivatives,using diazocine as the core,amide or imine bonds as the connecting units attached with different peripheral *** photoisomerization yield and thermal stability of these derivatives are tested by^(1)H NMR and UV-Vis absorption *** them,the imine-linked derivative exhibits the lowest photoisomerization efficiency,while the amide-linked ones show an elevated switching efficiency in transitioning from the cis to the trans configuration,compared to the unmodified 3,3′-***,based on experiments together with density functional theory(DFT)calculations,we find that the thermal stability of these derivatives is associated with the electron cloud density and steric hindrance of their *** to these unique photophysical properties,diazocine derivatives provide a foundation for the development and application of molecular optical switches.

关键词： Diazocine Photoisomerization Thermal stability

Enhanced Cd^(2+)removal from aqueous solution using olivine and magnesite combination:New insights into the mechanochemical synergistic effect

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2025年第1期147卷 714-725页

作者： Xiaofang chen Chao Wang Min chen Huimin Hu Junwei Huang Ting Jiang Qiwu Zhang School of Resources&Environmental Engineering Wuhan University of TechnologyWuhan 430070China State Environmental Protection Key Laboratory of Water Environmental Simulation and Pollution Control South China Institute of Environmental SciencesMinistry of Ecology and EnvironmentGuangzhou 510655China

In this study,an efficient stabilizer material for cadmium(Cd^(2+))treatment was successfully prepared by simply co-milling olivine with *** analyticalmethods including XRD,TEM,SEM and FTIR,combined with theoretical calculations(DFT),were used to investigate mechanochemical interfacial reaction between twominerals,and the reaction mechanism of Cd removal,with ion exchange between Cd^(2+)and Mg^(2+)as the main pathway.A fixation capacity of Cd^(2+)as high as 270.61 mg/g,much higher than that of the pristine minerals and even the individual/physical mixture of milled olivine and magnesite,has been obtained at optimized conditions,with a neutral pH value of the solution after treatment to allow its direct *** as-proposed Mg-based stabilizer with various advantages such as cost benefits,green feature etc.,will boosts the utilization efficiency of naturalminerals over the elaborately prepared adsorbents.

关键词： Olivine Magnesite Interface reaction Mechanochemical activation Cadmium removal

Dirac-geodesics with curvature term

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Mathematics 2025年第2期68卷 433-446页

作者： Qun chen Mingwei Zhang School of Mathematics and Statistics Wuhan UniversityWuhan 430072China

Dirac-geodesics with curvature term are Dirac-harmonic maps with curvature term from onedimensional domains. In this paper, we first describe the structure of Dirac-geodesics with curvature term in surfaces and give solutions on the unit 2-sphere and the hyperbolic plane, and then we give the structure of solutions in warped product spaces. Finally, we define the heat flow of Dirac-geodesics with curvature term and prove the global existence and sub-convergence of the heat flow into any closed surfaces and space forms. Our results provide the first examples and general existence theorems of Dirac-geodesics with curvature term.

关键词： Dirac-geodesic Dirac-harmonic map curvature heat flow existence

透明敷贴在异基因造血干细胞移植术后并发皮肤GVHD患者PICC导管维护中的应用

在线全文

学校读者我要写书评

暂无评论

中华现代护理杂志 2017年第1期23卷 64-66页

作者：毛凌陈凤姣张川莉四川大学华西医院血液内科成都610041

【摘要】目的比较两种规格透明敷贴在异基因造血干细胞移植（***）术后并发皮肤急性移植物抗宿主病（GVHD）患者PICC导管维护中的应用效果。方法回顾性分析四川大学华西医院收治的Allo—HSCT术后并发皮肤GVHD且留置PICC患者86例，选取2... 详细信息

【摘要】目的比较两种规格透明敷贴在异基因造血干细胞移植（***）术后并发皮肤急性移植物抗宿主病（GVHD）患者PICC导管维护中的应用效果。方法回顾性分析四川大学华西医院收治的Allo—HSCT术后并发皮肤GVHD且留置PICC患者86例，选取2012年3月-2014年1月使用规格10cm×12cm敷贴的42例患者为对照组，2014年3月-2016年1月使用规格6cm×7cm敷贴的44例患者为观察组。在进行PICC维护时，比较两组导管维护效果。结果两种规格敷贴导管固定有效性、导管相关感染以及敷贴更换间隔时间比较，差异无统计学意义（P〉0．05）；观察组医用粘胶相关皮肤损伤低于对照组，差异有统计学意义（P〈0．05）。结论进行PICC维护时，尺寸较小的透明敷料（6cm×7cm）具有较好的安全性和舒适性，且成本效益更佳，适用于***术后并发皮肤GVHD患者的PICC导管维护。

关键词：造血干细胞移植移植物抗宿主病敷贴经外周穿刺中心静脉置管