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| 1 | Arsenic removal from contaminated soil using phosphoric acid and phosphate显示文摘实验室批实验被进行学习砷(作为) 从用磷酸(H3PO4 ) 和钾 dihydrogen 磷酸盐(KH2PO4 ) 的自然地污染的土壤的移动。H3PO4 和 KH2PO4 证明了作为内容以土壤减少土壤的毒性,作为在 200 mmol/L 的集中的移动达到超过 20% 。同时,土壤的使发酸和土壤部件(Ca, Mg,和 Si ) 的溶解源于使用这二提炼之物,特别 H3PO4。这二提炼之物的有效性能被归因于代替作为由磷酸盐离子(PO43 ) 。溶解的酸玷污部件的 H3PO4 的功能作为移动穿上小效果。KH2PO4 几乎搬迁了像一样,显示它是更有希望的提炼之物作为 H3PO4,而是它没导致土壤的严重损坏。当移动为土壤部件,特别 Mg 和 Ca 的 360 min,而是溶解在孵化以后到达了平衡,运动研究的结果显示出那,是很快速的。因此如果,土壤部件的溶解将是不可避免的这是进一步的搬迁。Elovich 模型最好描述了运动数据作为在四之中的移动,模型在运动学习用作。 | ZENG Min LIAO Bohan LEI Ming ZHANG Yong ZENG Qingru OUYANG Bin | 2008 | Journal of Environmental Sciences2008，20，1： | 28 |
| 2 | La-EDTA coated Fe_3O_4 nanomaterial:Preparation and application in removal of phosphate from water显示文摘La-EDTA-Fe3O4 was prepared by a chemical co-precipitation method. The magnetic composite was characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). Furthermore, the adsorption properties of La-EDTA-Fe3O4 toward phosphate in water were investigated. The uptake rate of phosphate in water by La-EDTA-Fe3O4 was 3-1000 times than that of EDTA-Fe3O4 , and reached 97.8% at 7 hr. The adsorption process agreed well with the Freundlich model and kinetics studies showed that the adsorption of phosphate proceeds according to pseudo second-order adsorption kinetics. The maximum removal rate was achieved at pH 6.0-7.0. The La-EDTA-Fe3O4 had good adsorption properties and could be separated well from aqueous solution by a permanent magnet. Therefore, this nanomaterial has potential application for the removal of phosphate from large water bodies. | Jiao Yang Qingru Zeng Liang Peng Ming Lei Huijuan Song Boqing Tie Jidong Gu | 2013 | Journal of Environmental Sciences2013，25，2： | 8 |
| 3 | Simultaneous elution of polycyclic aromatic hydrocarbons and heavy metals from contaminated soil by two amino acids derived from β-cyclodextrins显示文摘Two highly water-soluble amino acids,which derived from β-CDs,i.e.,glutamic acid-β-cyclodextrin (GluCD) and ethylene-diamineβ-cyclodextrin (EDCD),were synthesized and were examined for their effect on solubilization of anthracene (ANT),complexation of cadmium (Cd2+),and elution removal of ANT and Cd2+ in soil.The results showed that GluCD and EDCD were powerful complexant for ANT and Cd2+.In the presence of 10 g/L GluCD and EDCD,the solubilization of ANT increased by 47.04 and 23.85 times compared to the control,respectively.GluCD resulted in approximately 90% complexation of Cd2+ while 70% complexation was observed for EDCD.Simultaneously,GluCD and EDCD could greatly enhance the elution removal of ANT and Cd 2+ from soil.GluCD resulted in the highest elution efficiency of ANT and Cd2+.With the addition of 10 g/L GluCD,53.5% of ANT and 85.6% of Cd2+ were eluted,respectively.The ANT had a negligible effect on the Cd2+ removal due to different complexing sites of ANT and Cd2+,while Cd2+ enhanced the ANT removal under the addition of GluCD because Cd2+ neutralized the-COOH group of GluCD.Adversely,the removal of ANT was decreased with Cd2+ under the addition of EDCD,this was due to the fact that Cd2+ enhanced the polarity of EDCD molecule and inhibited the complexation between ANT and EDCD.The study suggested that GluCD could be preferred and be successfully applied to remediation of heavy metals or organic compounds in contaminated soil. | Chengjian Yang Qingru Zeng Yunzhong Wang Bohan Liao Jian Sun Hui Shi Xingdou Chen | 2010 | Journal of Environmental Sciences2010，22，12： | 7 |
| 4 | Molecular diversity of arbuscular mycorrhizal fungi at a large-scale antimony mining area in southern China显示文摘Arbuscular mycorrhizal fungi(AMF) have great potential for assisting heavy metal hyperaccumulators in the remediation of contaminated soils. However, little information is available about the community composition of AMF under natural conditions in soils contaminated by antimony(Sb). The objective of this study was to investigate the characteristics of AMF molecular diversity, and to explore the effects of Sb content and soil properties on the AMF community structure in an Sb mining area. Four Sb mine spoils and one adjacent reference area were selected from around the Xikuangshan mine in southern China. The association of AMF molecular diversity and community composition with the rhizosphere soils of the dominant plant species was studied by Polymerase Chain Reaction-Denaturing Gradient Gel Electrophoresis(PCR-DGGE). Results from all five studied sites showed that the diversity of AMF decreased with increasing Sb concentration. Principal component analysis(PCA) indicated that the AMF community structure was markedly different among these groups. Further redundancy analysis(RDA) showed that Sb contamination was the dominating factor influencing the AMF community structure in the Sb mine area. However, the multivariate analysis showed that, apart from the soil Sb content, extractable nitrogen content and organic matter content also attributed to AMF sequence distribution type. Some AMF sequences were only found in the highly contaminated area and these might be ideal candidates for improving phytoremediation efficiency in Sb mining regions. Gene sequencing analysis revealed that most species were affiliated with Glomus, suggesting that Glomus was the dominant AMF genus in the studied Sb mining area. | Yuan Wei Zhipeng Chen Fengchang Wu Hong Hou Jining Li Yuxian Shangguan Juan Zhang Fasheng Li Qingru Zeng | 2015 | Journal of Environmental Sciences2015，27，3： | 6 |
| 5 | Spirulina platensis aqueous extracts ameliorate colonic mucosal damage and modulate gut microbiota disorder in mice with ulcerative colitis by inhibiting inflammation and oxidative stress显示文摘Ulcerative colitis(UC)is a chronic and recurrent inflammatory bowel disease(IBD)that has become a major gastroenterologic problem during recent decades.Numerous complicating factors are involved in UC development such as oxidative stress,inflammation,and microbiota disorder.These factors exacerbate damage to the intestinal mucosal barrier.Spirulina platensis is a commercial alga with various biological activity that is widely used as a functional ingredient in food and beverage products.However,there have been few studies on the treatment of UC using S.platensis aqueous extracts(SP),and the underlying mechanism of action of SP against UC has not yet been elucidated.Herein,we aimed to investigate the modulatory effect of SP on microbiota disorders in UC mice and clarify the underlying mechanisms by which SP alleviates damage to the intestinal mucosal barrier.Dextran sulfate sodium(DSS)was used to establish a normal human colonic epithelial cell(NCM460)injury model and UC animal model.The mitochondrial membrane potential assay 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide(MTT)and staining with Annexin V-fluorescein isothiocyanate(FITC)/propidium iodide(PI)and Hoechst 33258 were carried out to determine the effects of SP on the NCM460 cell injury model.Moreover,hematoxylin and eosin(H&E)staining,transmission electron microscopy(TEM),enzyme-linked immunosorbent assay(ELISA),quantitative real-time polymerase chain reaction(qPCR),western blot,and 16S ribosomal DNA(rDNA)sequencing were used to explore the effects and underlying mechanisms of action of SP on UC in C57BL/6 mice.In vitro studies showed that SP alleviated DSS-induced NCM460 cell injury.SP also significantly reduced the excessive generation of intracellular reactive oxygen species(ROS)and prevented mitochondrial membrane potential reduction after DSS challenge.In vivo studies indicated that SP administration could alleviate the severity of DSS-induced colonic mucosal damage compared with the control group.Inhibition of inflammation and oxidative stress was associated with increases in the activity of antioxidant enzymes and the expression of tight junction proteins(TJs)post-SP treatment.SP improved gut microbiota disorder mainly by increasing antioxidant enzyme activity and the expression of TJs in the colon.Our findings demonstrate that the protective effect of SP against UC is based on its inhibition of pro-inflammatory cytokine overproduction,inhibition of DSS-induced ROS production,and enhanced expression of antioxidant enzymes and TJs in the colonic mucosal barrier. | Jian WANG Liqian SU Lun ZHANG Jiali ZENG Qingru CHEN Rui DENG Ziyan WANG Weidong KUANG Xiaobao JIN Shuiqing GUI Yinghua XU Xuemei LU | 2022 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2022，23，6： | 3 |
| 6 | A novel hysteresis current control for active power filter with constant frequency显示文摘 | ZENG Jiang YU Chang QI Qingru | 2004 | Electric Power Systems Research2004，68，1： | 1 |
| 7 | A novel hysteresis current control for active power filter with constant frequency显示文摘 | Zeng Jiang Yu Chang Qi Qingru | 2004 | Electric Power Systems Research2004，68，1： | 1 |
| 8 | Fraction distributions of lead,cadmium,copper,and zinc in metal contaminated soil before and after extraction with disodium ethy lenediam inetetraacetic acid显示文摘 | Lei Ming Liao Bohan Zeng Qingru | 2008 | Communications in Soil Science and Plant Analysis2008，39，1314： | 1 |
| 9 | A novel hysteresis current control for active power filter with constant frequency显示文摘 | ZENG Jiang YU Chang QI Qingru | 2004 | Electric Power Systems Research2004，68，1： | 1 |
| 10 | A novel hysteresis current control for active power filter with constant frequency显示文摘 | Zeng Jiang Yu Chang Qi Qingru | 2004 | Electric Power Systems Research2004，68，1： | 1 |
| 11 | Phylogenetic diversity of TypeⅠpolyketide synthase genes from sediments of Ardley Island in Antarctica显示文摘The diversity of modular polyketide synthase (PKS) genes in sediments of Ardley Island in Antarctica, was studied by restriction fragment length polymorphism (RFLP) analysis. Phylogenetic analysis of 14 amino acid (AA) sequences indicates that the identified ketosynthase (KS) domains were clustered with those from diverse bacterial groups, including Cyanobacteria, γ-Proteobacteria, Actinobacteria, Firmicutes, and some unidentified microorganisms from marine sponge, bryozoan and other environmental samples. The obtained KS domains showed 43%-81% similarity at the AA level to reference sequences in GenBank. Six identified KS domains showed diverse sequences of the motif (VQTACSTS) that was used to identify the hybrid PKS/nonribosomal peptide synthetase (NRPS) enzyme complex, and formed a new branch. These results reveal a high diversity and novelty of PKS genes in antarctic sediments. | ZHAO Jing YANG Ning CHEN Xinglin JIANG Qingru ZENG Runying | 2011 | Acta Oceanologica Sinica2011，30，6： | 1 |
| 12 | Ammonia volatilization and availability of Cu,Zn induced by applications of urea with and without coating in soils显示文摘Ammonia volatilization and the distribution of Cu and Zn were investigated in two types of soil treated with coated and uncoated urea.The rate of ammonia volatilization in two weeks after fertilizing with coated urea was 8% in soil 1 (soil derived from river alluvial deposits in Dongting Lake Plain) and 5.15% in soil 2 (red soil derived from quaternary red clay),about half the rates observed when fertilizing with common urea,implying that the hydrolysis speed of the coated urea was lower than for common urea,and that the coated urea can increase nitrogen use efficacy.As for the availability of Cu and Zn,their concentrations decreased in the first week after fertilization,and then increased,which was contrary to the effect of treatment on soil pH.For example,when the pH was 7.99,there was 0.79mg/kg exchangeable Cu and 0.85mg/kg exchangeable Zn in the soil derived from river alluvial deposits in Dongting Lake Plain.However,the concentrations of exchangeable Cu and Zn were generally lower for the common urea treatments than those with the coated urea because the peak pH for the common urea treatment was greater.The concentrations of these elements correlated well with pH in the range 4-8 in second order polynomial fits. | Zhaohui Jiang Qingru Zeng Boqing Tie Bohan Liao Hejie Pi Xiaoyou Feng Yulin Sun | 2012 | Journal of Environmental Sciences2012，24，1： | 0 |
| 13 | The implications of planting mode on cadmium uptake and remobilization in rice: Field experiments across growth stages显示文摘Global rice production practices have gradually changed from a reliance on transplanting to direct seeding.Yet how this shift may alter cadmium(Cd)accumulation in rice is poorly known.Here we conducted field experiments with two rice genotypes cultivars that were planted using three methods:via direct seeding(DS),seedling throwing(ST),and manual transplanting(MT).Rice samples were collected during four growth stages.The formation and distribution of iron plaque were analyzed using DCB(dithionite-citrate-bicarbonate)extractions and observed under micro-XRF(micro X-ray fluorescence).The results revealed that,in each growth stage,DS rice was more apt to harbor Cd distributed in the plant’s aerial parts,and the Cd concentration of brown rice from DS was 21.8%–43.3%significantly higher than those from ST and MT at maturity stage(p<0.05).During the vegetative stages,the Cd uptake percentage was higher in DS than MT rice,and those plants arising from the DS method were capable of absorbing more Cd earlier in their growth and development.Conversely,using DS decreased the amount of iron plaque covering the root surface in every growth stage,especially in the critical period of Cd accumulation,such that the roots’middle areas were distinguished by a near-complete absence of iron plaque,thus weakening its role as an effective barrier to Cd uptake from soil.Collectively,this study demonstrated that implementing the DS mode of planting will increase Cd’s distribution in the aboveground parts of rice,and heightening the risk of Cd contamination in grain. | Xiao Deng Yixuan Chen Yang Yang Liang Peng Luo Si Qingru Zeng | 2021 | Frontiers of Environmental Science & Engineering2021，15，6： | 0 |
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