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郴州尾矿区不同油菜品种对重金属吸收积累特性的比较

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农业资源与环境学报 2015年第4期32卷 370-376页

作者：杨洋黎红亮陈志鹏廖柏寒曾清如湖南农业大学生物科学与技术学院湖南长沙410128 湖南农业大学资源与环境学院湖南长沙410128

油菜因具有生长快速、生物量较高、且对重金属有较强的耐性及吸收积累能力的特点,常用来修复土壤重金属污染。本试验在湖南郴州某尾矿区受重金属复合污染的农田,种植芥菜型油菜(BJ)、甘蓝型油菜(BL)、加拿大甘蓝型油菜(CBL)和本地油菜(L... 详细信息

油菜因具有生长快速、生物量较高、且对重金属有较强的耐性及吸收积累能力的特点,常用来修复土壤重金属污染。本试验在湖南郴州某尾矿区受重金属复合污染的农田,种植芥菜型油菜(BJ)、甘蓝型油菜(BL)、加拿大甘蓝型油菜(CBL)和本地油菜(LR)4个品种,对比不同品种油菜对重金属的吸收积累情况。结果表明:Pb主要积累在油菜的根部,Cu、Zn、Cd在油菜的根、叶中的积累浓度都很高,而茎和果实中的重金属含量很低;油菜叶对重金属的积累浓度表现为:Zn>Cu>Pb>Cd,根对重金属的吸收积累量的顺序为:Pb>Zn>Cu>Cd;重金属在不同品种油菜间的吸收积累及转运情况存在差异性显著,地上部分(叶)的富集能力表现为:Cu:BJ≥LR>BL>CBL,Zn:BL>CBL>BJ>LR,Pb:BJ≈LR>BL≈CBL,Cd:BL>CBL>BJ>LR;重金属从茎秆转移到叶片转运系数(Tsl)为:Cu:LR>BJ≈CBL>BL,Zn:BL>LR>BJ>CBL,Pb:BJ>CBL≈LR>BL,Cd:BJ>BL>CBL>LR。总的来说,芥菜型油菜适合Cu、Pb污染的土壤;甘蓝型油菜对Zn、Cd的吸收积累效果最好,非常适合用来修复重金属复合污染的土壤。

关键词：尾矿区土壤重金属油菜

不同植物人工湿地净化效果及基质微生物状况差异分析

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环境科学研究 2011年第9期24卷 1035-1041页

作者：奉小忧宋永会曾清如彭剑峰刘雪瑜 RHEE Jae Seong IAMCHATURAPATR Janjit 中国环境科学研究院北京100012 湖南农业大学资源环境学院湖南长沙410128 韩国科学技术研究院(KIST)

为研究不同植物对人工湿地污染物净化效果和基质微生物状况的影响,采用序批式运行的沙培模拟人工湿地,探讨了菖蒲、香蒲、千屈菜、芦苇和白鹤芋5种湿地植物在不同HRT(水力停留时间,分别为1,3和5 d)下对模拟废水中TP,NH4+-N和CODCr去除... 详细信息

为研究不同植物对人工湿地污染物净化效果和基质微生物状况的影响,采用序批式运行的沙培模拟人工湿地,探讨了菖蒲、香蒲、千屈菜、芦苇和白鹤芋5种湿地植物在不同HRT(水力停留时间,分别为1,3和5 d)下对模拟废水中TP,NH4+-N和CODCr去除效果的影响,比较了不同植物类型模拟人工湿地中基质微生物的数量差异.结果表明,不同植物系统对污染物的去除随HRT延长逐渐提高,HRT为5 d时各植物系统对污染物的去除效果最佳.TP,NH4+-N和CODCr的最高去除率分别达90.4%,61.7%和96.4%.相对于其他试验系统,菖蒲系统对各污染指标均具有最优的去除效果.植物种类对基质微生物数量的影响无显著差异.研究还发现,各系统中亚硝酸细菌数量与NH4+-N去除率之间呈显著相关.

关键词：模拟人工湿地湿地植物水力停留时间微生物

羟基磷灰石对溶液及土壤中Pb^(2+)的吸附研究

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湖南农业科学 2011年第11期 31-33页

作者：刘爱军彭亮孙静唐伟周婷曾清如湖南农业大学资源环境学院湖南长沙410128

羟基磷灰石(HAP)能有效固定土壤和溶液中的Pb2+,研究了羟基磷灰石对Pb2+的吸附特性,讨论了离子的初始浓度,羟基磷灰石的用量、作用时间及离子间的相互影响。结果表明:HAP对Pb2+的最佳吸附条件为Pb2+初始浓度为500 mg/L,HAP用量为5 g/L,... 详细信息

羟基磷灰石(HAP)能有效固定土壤和溶液中的Pb2+,研究了羟基磷灰石对Pb2+的吸附特性,讨论了离子的初始浓度,羟基磷灰石的用量、作用时间及离子间的相互影响。结果表明:HAP对Pb2+的最佳吸附条件为Pb2+初始浓度为500 mg/L,HAP用量为5 g/L,吸附时间为40 min。在Pb2+、F-混合溶液中,Pb2+/F-质量浓度比的改变对HAP吸附Pb2+的影响很大,对F-的吸附率没有太大影响。HAP在茶园土壤中的最佳添加量是10 g/kg。

关键词：羟基磷灰石 Pb^2+ F^- 吸附土壤

Deciphering the molecular mechanisms of Simiaowan in the treatment of hyperuricemia: in vivo and in silico approaches

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Traditional Medicine Research 2025年第2期10卷 37-54页

作者： Yong-Chang zeng Jun-Hong Wu Dan-Dan Xu Kang He Chang-qing Liu Li-Fei Song Zheng-Zhi Wu Qian-Qian Jiang Shao-Yu Liang Department of Neurology The First Affiliated Hospital of Shenzhen UniversityShenzhen 518020China Pharmaceutical Department The Affiliated TCM Hospital of Guangzhou Medical UniversityGuangzhou 510000China School of Pharmacy Guizhou University of Traditional Chinese MedicineGuiyang 550025China Guangzhou Zeli Medical Technology Co. Ltd.Guangzhou 510700China

Background:Simiaowan(SMW),a well-known traditional Chinese medicine,has been employed to treat hyperuricemia(HUA)and gout for ***,the bioactive components and underlying mechanisms have not been *** objective of this study was to identify the active components and potential mechanisms of SMW by integrating pharmacological experimentation,serum pharmacochemistry,network pharmacology and molecular ***:HUA rats modelling by high-fat/high-sugar diet and potassium oxonate/adenine oral administration were used to evaluate the pharmacodynamic effects of ***-Q-Exactive-MS/MS was employed to detect the bioactive components present in SMW-containing *** pharmacology and molecular docking were utilized to elucidate the potential targets and underlying ***:SMW effectively ameliorated HUA rats via the inhibition of uric acid(UA)production,promotion of UA excretion,improvement of lipid and glucose metabolic abnormalities,antioxidant,anti-inflammatory and anti-insulin resistance effects.A total of 73 compounds detected in SMW-containing serum were identified as potential active components,with alkaloids,flavonoids,organic acids,and terpenoids emerging as the primary active *** 203 corresponding targets were obtained as SMW anti-HUA/gout targets,which mainly participated in apoptosis,insulin resistance,TNF,PI3K-Akt,HIF-1,NF-κB,MAPK,IL-17 and TLR signaling *** docking indicated that active compounds(***,phellodendrine,quercetin,formononetin,ferulic acid)had superior binding abilities to the key targets(*** carrier family 22 member 12(URAT1),solute carrier family 22 member 6(OAT1),ATP-binding cassette sub-family G member 2(ABCG2),solute carrier family 2,facilitated glucose transporter member 9(GLUT9),xanthine dehydrogenase/oxidase(XDH),transcription factor p65(RELA),toll-like receptor 4(TLR4),prostaglandin G/H synthase 2(PTGS2),caspase-3(CASP3),insulin(INS)).Conclusion:S

关键词： hyperuricemia network pharmacology serum pharmacochemistry Simiaowan UPLC-Q-Exactive-MS/MS

On generalized extending modules

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第6期8卷 939-945页

作者： zeng qing-yi Department of Mathematics Zhejiang University Hangzhou 310027 China Department of Mathematics Shaoguan University Shaoguan 512005 China

A module Mis called generalized extending if for any submodule N of M, there is a direct summand K of M such that N≤K and KIN is singular. Any extending module and any singular module are generalized extending. Any homomorphic image of a generalized extending module is generalized extending. Any direct sum of a singular （uniform） module and a semi-simple module is generalized extending. A ring R is a right Co-H-ring if and only if all right R modules are generalized extending modules.

关键词： Generalized extending modules Singular Co-H-rings

过碳酰胺施用对中国南方六种土壤pH及活性铝短期变化的影响

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漳州师范学院学报（自然科学版） 2008年第2期21卷 74-77页

作者：钟宁李顺兴曾清如廖柏寒张利田漳州师范学院化学与环境科学系福建漳州363000 湖南农业大学资源环境学院湖南长沙410128 中国科学院生态环境研究中心北京100085

为了研究施用过碳酰胺后中国南方6个酸性土壤pH值及活性Al的短期变化,进行了实验室模拟土培试验.结果表明:对6种酸性土壤施用不同浓度过碳酰胺,其pH值在短期内都随着施入过碳酰胺浓度的增大而急剧上升,交换性铝含量随着施用过碳酰胺浓... 详细信息

为了研究施用过碳酰胺后中国南方6个酸性土壤pH值及活性Al的短期变化,进行了实验室模拟土培试验.结果表明:对6种酸性土壤施用不同浓度过碳酰胺,其pH值在短期内都随着施入过碳酰胺浓度的增大而急剧上升,交换性铝含量随着施用过碳酰胺浓度的增大而急剧下降;施用过碳酰胺后,土壤pH值上升的现象是短期的,pH值达到最大值后缓慢下降,而土壤中铝元素的有效性与土壤pH的变化趋势呈显著负相关;短期内,经过碳酰胺处理的玉米幼苗主根明显缩短,侧根生长受到抑制,并且其玉米铝毒明显重于不经过碳酰胺处理的玉米,被玉米吸收的铝主要分布在玉米的地下部分,只有较少的铝被转移到地上部分.

关键词：过碳酰胺土壤pH 活性铝中国南方玉米

Consideration of green intelligent steel processes and narrow window stability control technology on steel quality

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International Journal of Minerals,Metallurgy and Materials 2021年第8期28卷 1264-1273页

作者： Lu Lin Jia-qing zeng Metallurgical Technology Institute Central Iron and Steel Research InstituteBeijing 100081China

In order to promote the intelligent transformation and upgrading of the steel industry, intelligent technology features based on the current situation and challenges of the steel industry are discussed in this paper. Based on both domestic and global research, functional analysis, reasonable positioning, and process optimization of each aspect of steel making are expounded. The current state of molten steel quality and implementation under narrow window control is analyzed. A method for maintaining stability in the narrow window control technology of steel quality is proposed, controlled by factors including composition, temperature, time, cleanliness, and consumption(raw material). Important guidance is provided for the future development of a green and intelligent steel manufacturing process.

关键词： steel manufacturing process steelmaking narrow window brand value green and intelligence process function

Dynamics of a prestressed Timoshenko beam subject to arbitrary external load

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2010年第11期11卷 898-907页

作者： Ji-qing JIANG Gui-ru YE Department of Civil Engineering Zhejiang University Hangzhou 310058 China

The free vibration and transient wave in a prestressed Rayleigh-Timoshenko beam subject to arbitrary transverse forces are analyzed by the newly developed method of reverberation-ray matrix (MRRM). The effects of shear deformation and rotational inertia are taken into consideration. With a Fourier transform technique, the general wave solutions with two sets of unknown amplitude coefficients are obtained in the transformed domain for an unbonded prestressed beam under the action of arbitrary external excitations. From the coupling at joints and the compatibility of displacements in each member, the free and forced vibration responses of a beam with various boundary conditions are finally evaluated through certain numerical algorithms. Results are presented for a simply-supported beam subject to either a point fixed load or moving load. Good agreement with the finite element method (FEM) is obtained. The present work is instructive for high-speed railway bridge design and structural health monitoring.

关键词： Reverberation-ray analysis Prestressed Timoshenko beam Free vibration Dynamic responses

Stress-corrosion behavior and characteristics of the friction stir welding of an AA2198-T34 alloy

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International Journal of Minerals,Metallurgy and Materials 2020年第6期27卷 774-782页

作者： Quan-qing zeng Song-sheng zeng Dong-yao Wang Research Institute of Light Alloy Central South UniversityChangsha 410083China Key Laboratory of the Ministry of Education of Nonferrous Metals Central South UniversityChangsha 410083China Technology Center Valin ArcelorMittal Automotive Steel Co.Ltd.Loudi 417009China

To better understand the stress-corrosion behavior of friction stir welding(FSW),the effects of the microstructure on the stress-corrosion behavior of the FSW in a 2198-T34 aluminum alloy were *** experimental results show that the low-angle grain boundary(LABs)of the stir zone(SZ)of FSW is significantly less than that of heated affected zone(HAZ),thermo-mechanically affected zone(TMAZ),and parent materials(PM),but the grain boundary precipitates(GBPs)T1(Al2CuLi)were less,which has a slight effect on the stress *** dislocation density in SZ was greater than that in other *** residual stress in SZ was+67 MPa,which is greater than that in the *** residual stress in the HAZ and PM is-8 MPa and-32 MPa,respectively,and both compressive *** corrosion potential in SZ is obviously less than that in other ***,micro-cracks were formed in the SZ at low strain rate,which indicates that the grain boundary characters and GBPs have no significant effect on the crack initiation in the stress-corrosion process of the ***,the residual tensile stress has significant effect on the crack initiation during the stress-corrosion process.

关键词： slow strain rate test residual stress grain boundary characteristic AA2198-T34 alloy friction stir welding