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Removal of Cu（ll） ions from aqueous solution by activated carbon impregnated with humic acid

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Frontiers of Environmental Science & Engineering 2014年第3期8卷 329-336页

作者： Hanchao LIU Suping FENG nannan zhang Xiaolin DU Yongli LIU Shandong Key Laboratory of Water Pollution Control and Resource Reuse School of Environmental Science and Engineering Shandong University Jinan 250100 China

Humic acid （HA） was impregnated onto powdered activated carbon to improve its Cu（II） adsorption capability. The optimum pH value for Cu（II） removal was 6. The maximum adsorption capacity of HAimpregnated activated carbon was up to 5.98mg.g-1, which is five times the capacity of virgin activated carbon. The adsorption processes were rapid and accompanied by changes in pH. In using a linear method, it was determined that the equilibrium experimental data were better represented by the Langmuir isotherm than by the Freundlich isotherm. Surface charges and surface functional groups were studied through zeta potential and FTIR measurements to explain the mechanism behind the humicacid modification that enhanced the Cu（II） adsorption capacity of activated carbon.

关键词： adsorption humic acid activated carbon heavy metal ions

Effects of direct aging treatment on microstructure,mechanical properties and residual stress of selective laser melted AlSi10Mg alloy

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Journal of Materials Science & Technology 2023年第8期139卷 198-209页

作者： Huaping Tang Chaofeng Gao Yong zhang nannan zhang Chuan Lei Yunjie Bi Ping Tang Jeremy Heng Rao Institute of Advanced Additive Manufacturing Ji Hua LaboratoryFoshan 528200China Department of Materials Science and Engineering Monash UniversityClaytonVIC 3800Australia National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong UniversityShanghai 200240China Hunan Farsoon High-Tech Co. LtdChangsha 410000China

Direct aging treatment is an important post-processing procedure,yet little research has been done on how it balances the mechanical properties and the stress removal for selective laser melted(SLMed)AlSi10Mg ***,we proposed a typical direct aging treatment on SLMed AlSi10Mg alloys,and studied the effects on their microstructure,properties and residual stress *** results indi-cate that the as-built microstructure is mainly composed of fine cellularα-Al and reticulated Si phases,and some pre-existing precipitates and dislocations are found in these *** direct aging treatment promotes the precipitation of nano-scaled Si phases and preserves a network-like Si ***,the strength of the peak-aged alloy increases while the ductility *** the aging temperature in-creases from 160 to 200℃,aging hardening behavior was accelerated *** at 160℃ for 4-9 h removes 32.0%-43.0%of the residual stress,which is attributed to the decomposition of the su-persaturatedα-Al matrix,the precipitation of the nano-Si phase and the exposure of low-angle grain boundaries(LAGBs).Considering the overal alloy performance obtained,over-aging at 160℃ for 4 h is the optimized heat treatment *** this condition,the yield strength(YS),ultimate tensile strength(UTS)and elongation(EL)of the alloy in the transverse and longitudinal direction are 309.5 MPa,464.4 MPa and 8.3%and 286.4 MPa,464.9 MPa and 5.1%,respectively.

关键词： Selective laser melting AlSi10Mg alloys Direct aging treatment Residual stress removal

Visible light induced cross-coupling synthesis of asymmetrical heterobiaryls using Pd/CeO_2 nanocomposite photocatalyst

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Chinese Chemical Letters 2018年第6期29卷 903-906页

作者： Yanqin Ge Pinhui Diao Chen Xu nannan zhang Cheng Guo College of Chemistry and Molecular Engineering Nanjing Tech University

A simple, mild and green approach has been developed for the synthesis of asymmetrical heterobiaryls under the irradiation of visible light without any oxidants and promoting reagents through using Pd/Ce O2 nanocomposite photocatalyst. This method can tolerate considerable functional groups such as electrondonating groups and electron-withdrawing groups through CààC cross-coupling. Moreover, we obtain the products with moderate yields in an efficient way. Finally, a plausible mechanism is proposed.

关键词： Visible light Nanocomposite photocatalyst Pd/CeO2 C—C cross-coupling Mild condition

Frequent recombination in Cynoglossus abbreviatus(Pleuronectiformes:Cynoglossidae)ribosomal 18S rDNA

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Acta Oceanologica Sinica 2024年第8期43卷 98-103页

作者： Li Gong Tingqi Jiang Bilin Hu Kaixin Wang nannan zhang Zengliang Miao National Engineering Laboratory of Marine Germplasm Resources Exploration and Utilization Zhejiang Ocean UniversityZhoushan 316022China Marine Science and Technology College Zhejiang Ocean UniversityZhoushan 316022China

The conventional theory of concerted evolution has been used to explain the lack of sequence variation in ribosomal RNA(rRNA)genes across diverse eukaryotic ***,recent investigations into rRNA genes in flatfish genome have resulted in controversial *** study focuses on 18S rRNA genes of the widely distributed tongue sole,Cynoglossus abbreviatus(Pleuronectiformes:Cynoglossidae),aiming to explore sequence *** distinct 18S rDNA sequence types(Type A,B,R1,R2,and R3)were identified,suggesting a departure from concerted evolution.A combination of general criteria and variations in highly conserved regions were employed to detect *** results pinpointed Type A sequences as potential pseudogenes due to significant sequence variations and deviations in secondary structure within highly conserved *** types(Type R1,R2,and R3)were identified as recombinants between Type A and B sequences,with simple crossing over and gene conversion as the most likely recombination *** findings not only contribute to rRNA pseudogene identification but also shed light on the evolutionary dynamics of rRNA genes in teleost genomes.

关键词： ribosomal RNA tongue sole non-concerted evolution pseudogene crossing over gene conversion

A novel BCI paradigm for Visual Tracking 36

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A novel BCI paradigm for Visual Tracking

Effects of cooling rate on the microstructure and properties of magnesium alloy-a review

第36届中国控制会议

作者： nannan zhang Yadong Liu Zongtan Zhou College of Mechatronics and Automation National University of Defense Technology

ISBN: (纸本)9781538629185

In this paper,a novel Brain-computer interface（BCI） paradigm based on steady state visual evoked potential（SSVEP）combined with computer vision is *** detect and track the motion areas using computer vision,but select them by BCI *** show that the paradigm do better in the camera-dominated environment than test using video,but compared to virtual environments its performance is not very *** only an prototype paradigm,it is a meaningful attempt to combine human intelligence and artificial intelligence and it may do better in the future.

关键词： Brain-computer interface steady state visual evoked potential dynamic target detection object tracking Minimum Output Sum of the Squared Error Filter

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Journal of Magnesium and Alloys 2024年第8期12卷 3094-3114页

作者： Huisheng Cai nannan zhang Liang Liu Juan Su Yuguang Li Yu Kang Feng Guo Inner Mongolia Key Laboratory of Thin Film and Coatings School of Material Science and EngineeringInner Mongolia University of TechnologyHohhot 010051China School of Sino-German Engineering Shanghai Technical Institute of Electronics and InformationShanghai 201411China

Magnesium alloy is one of the most widely used lightweight structural materials,and the development of high strength-toughness magnesium alloy is an important research field at present and even in the *** preparation process parameters of magnesium alloy directly affect the microstructure of the magnesium alloy,and then determine the properties of the magnesium *** cooling rate has important effects on the microstructure and properties of the magnesium alloy,and is an important preparation process parameter that cannot be *** the cooling rate from liquid phase to solid phase and the cooling rate of the magnesium alloy after heat treatment will change the microstructure of the magnesium ***,the properties of magnesium alloy will be *** this paper,the effects of cooling rate on the solidification behavior,the rheological behavior,the change of microstructure(the solid solution of alloying elements in matrix,the composition,size,distribution and morphology of second phase,the diffusion and segregation of alloying elements,the grain size,the formation and morphology of dendrite,etc.),and the effects of cooling rate of magnesium alloy after heat treatment on the microstructure and stress distribution are *** reasons for the divergence about the influence of cooling rate on the microstructure of magnesium alloy are analyzed in *** effects of cooling rate on the mechanical properties,corrosion resistance and oxidation resistance of magnesium alloy are also analyzed and discussed ***,the new methods and approaches to study the effects of cooling rate on the microstructure and properties of magnesium alloy are prospected.

关键词： Magnesium alloy Cooling rate Microstructure Mechanical properties Corrosion resistance Oxidation resistance

Visible light induced the high-efficiency spirocyclization reaction of propynamide and thiophenols via recyclable catalyst Pd/ZrO2

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Chinese Chemical Letters 2020年第2期31卷 337-340页

作者： nannan zhang Hangdong Zuo Chen Xu Junyi Pan Jun Sun Cheng Guo College of Chemistry and molecular engineering Nanjing Tech UniversityNanjing 211816 China

A new method for the synthesis of 3-thioazaspiro[4,5]trienones was developed using Pd nanoparticle catalysts,which are highly efficient,environmentally friendly and *** and thiophene phenols are effectively cyclized by Pd/ZrO2 catalyst under visible light *** present protocol simply utilizes visible light as the safe and ecofriendly energy source,and the Pd/ZrO2 nanocomposite as photocatalyst provides a simple and practical approach to various 3-thioazaspiro[4,5]trienones in moderate conditions to high yields.

关键词： Visible light Spirocyclization reaction Mild condition Pd/ZrO2 nanocomposite photocatalyst

Split Nano luciferase complementation for probing protein-protein interactions in plant cells

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Journal of Integrative Plant Biology 2020年第8期62卷 1065-1079页

作者： Feng-Zhu Wang nannan zhang Yan-Jun Guo Ben-Qiang Gong Jian-Feng Li Guangdong Provincial Key Laboratory of Plant Resources State Key Laboratory of BiocontrolMOE Key Laboratory of Gene Function and RegulationSchool of Life SciencesSun Yat‐sen UniversityGuangzhou 510275China Guangdong Provincial Key Laboratory of Sugarcane Improvement and Biorefinery Guangdong Bioengineering InstituteGuangzhou 510316China

Deciphering protein-protein interactions(PPIs)is fundamental for understanding signal transduction pathways in *** split firefly luciferase(Fluc)complementation(SLC)assay has been widely used for analyzing ***,concern has risen about the bulky halves of Fluc interfering with the functions of their fusion *** luciferase(Nluc)is the smallest substitute for Fluc with improved stability and ***,we developed a dual-use system enabling the detection of PPIs through the Nluc-based SLC and co-immunoprecipitation *** was realized by coexpression of two proteins under investigation in fusion with the HA-or FLAG-tagged Nluc halves,*** validated the robustness of this system by reproducing multiple previously documented PPIs in protoplasts or Agrobacterium-transformed *** next applied this system to evaluate the homodimerization of Arabidopsis CERK1,a coreceptor of fungal elicitor chitin,and its heterodimerization with other homologs in the absence or presence of ***,split fragments of Nluc were fused to two cytosolic ends of Arabidopsis calcium channels CNGC2 and CNGC4 to help sense the allosteric change induced by the bacterial elicitor ***,these results demonstrate the usefulness of the Nluc-based SLC assay for probing constitutive or inducible PPIs and protein allostery in plant cells.

关键词： system interactions Arabidopsis

Metabolic regulation of the immune system in health and diseases:mechanisms and interventions

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Signal Transduction and Targeted Therapy 2024年第11期9卷 4904-4934页

作者： Tengyue Hu Chang-Hai Liu Min Lei Qingmin Zeng Li Li Hong Tang nannan zhang West China School of clinical medical West China Second University HospitalSichuan UniversityChengduChina Center of Infectious Diseases West China Hospital of Sichuan UniversityChengduChina Laboratory of Infectious and Liver Diseases Institution of Infectious DiseasesWest China HospitalSichuan UniversityChengduChina National Center for Birth Defect Monitoring Key Laboratory of Birth Defects and Related Diseases of Women and ChildrenMinistry of EducationWest China Second University HospitalSichuan UniversityChengduChina State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy West China Second University HospitalSichuan UniversityChengduChina Division of Renal and endocrinology Qin Huang HospitalXi’anChina

Metabolism,including glycolysis,oxidative phosphorylation,fatty acid oxidation,and other metabolic pathways,impacts the phenotypes and functions of immune *** metabolic regulation of the immune system is important in the pathogenesis and progression of numerous diseases,such as cancers,autoimmune diseases and metabolic *** concept of immunometabolism was introduced over a decade ago to elucidate the intricate interplay between metabolism and *** definition of immunometabolism has expanded from chronic low-grade inflammation in metabolic diseases to metabolic reprogramming of immune cells in various *** immunometabolism being proposed and developed,the metabolic regulation of the immune system can be gradually summarized and becomes more and more *** the context of many diseases including cancer,autoimmune diseases,metabolic diseases,and many other disease,metabolic reprogramming occurs in immune cells inducing proinflammatory or anti-inflammatory *** phenotypic and functional changes of immune cells caused by metabolic regulation further affect and development of *** on experimental results,targeting cellular metabolism of immune cells becomes a promising *** this review,we focus on immune cells to introduce their metabolic pathways and metabolic reprogramming,and summarize how these metabolic pathways affect immune effects in the context of *** thoroughly explore targets and treatments based on immunometabolism in existing *** challenges of translating experimental results into clinical applications in the field of immunometabolism are also *** believe that a better understanding of immune regulation in health and diseases will improve the management of most diseases.

关键词： metabolism diseases summarized