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Rare Metals 2017年第5期36卷 442-448页

作者： li-Hua Zhang Si-Si Wu Yi Wan Yi-Feng Huo Yao-Cong Luo Ming-Yang Yang Min-Chan li Zhou-guang Lu Laboratory of Green and Renewable Energy Materials Department of Materials Science and EngineeringSouth University of Science and Technology of ChinaShenzhenChina

Alkaline zinc manganese dioxide（Zn–MnO2）batteries are widely used in everyday life. Recycling of waste alkaline Zn–MnO2 batteries has always been a hot environmental concern. In this study, a simple and costeffective process for synthesizing Mn3O4/carbon nanotube（CNT） nanocomposites from recycled alkaline Zn–MnO2 batteries is presented. Manganese oxide was recovered from spent Zn–MnO2 battery cathodes. The Mn3O4/CNT nanocomposites were produced by ball milling the recovered manganese oxide in a commercial multi-wall carbon nanotubes（MWCNTs） solution. Scanning electron microscopy（SEM） analysis demonstrates that the nanocomposite has a unique three-dimensional（3D） bird nest structure. Mn3O4 nanoparticles are homogeneously distributed on MWCNT framework. Mn3O4/CNT nanocomposites were evaluated as an anode material for lithium-ion batteries, exhibiting a highly reversible specific capacitance of -580 mA h·g^-1 after 100 cycles. Moreover, Mn3O4/CNT nanocomposite also shows a fairly positive onset potential of -0.15 V and quite high oxygen reducibility when considered as an electrocatalyst for oxygen reduction reaction.

关键词： Waste Zn–MnO2 batteries Recycling Nanocomposites Anode materials Oxygen reduction reaction

Sunflower-like SrCo_(2)S_(4)@f-MWCNTs Hybrid Wrapped by Engineering N-Reduced Graphene Oxide for High Performance Dye-Sensitized Solar Cells

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Journal of Renewable Materials 2020年第4期8卷 431-446页

作者： Weiming Zhang Muhammad Wasim Khan Xueqin Zuo Qun Yang Huaibao Tang Shaowei Jin guang li School of Physics and Materials Science Anhui UniversityHefei230601China Anhui Key Laboratory of Information Materials and Devices Hefei230601China Institute of Physical Science and Information Technology Anhui UniversityHefei230601China

A novel sunflower-like nanocomposite of SrCo_(2)S_(4)nanoflakes and functionalized multiwall carbon nanotubes(f-MWCNTs)entanglement enveloped in nitrogen-reduced graphene oxide(N-RGO)is prepared by a cheap *** unique entanglement structure of the material exhibits higher specific surface area,better electrical conductivity and other *** helps to reduce the transfer resistance in the photoelectric process of the battery and improve the electrochemical activity,thus increasing the photoelectric conversion efficiency of the *** new ternary cobalt-based sulfide material can replace platinum as the counter electrode(CE)material loaded on dye-sensitized solar cells(DSSCs).DSSCs with SrCo_(2)S_(4)@f-MWCNTs@N-RGO(SCS@f-M@N-R)as CE material show excellent photoelectric conversion efficiency(PCE,8.06%),even surpassing than that of Pt CE material(7.51%).The low cost,excellent electrocatalytic performance and simple preparation method of SCS@f-M@N-R nanomaterial provide feasibility for replacing platinum material as the CE material of DSSCs,which is of great significance and persuasion.

关键词： Dye-sensitized solar cells sunflower-like multiwall carbon nanotubes SrCo_(2)S_(4) counter electrode

Phototropism of Thalli and Rhizoids Developed from the Thallus Segments of Bryopsis hypnoides Lamouroux

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Journal of Integrative Plant Biology 2006年第6期48卷 686-691页

作者： Nai-Hao Ye Hong-Xia Wang guang-Ce Wang Zheng-Quan Gao De-Mao li Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Qingdao 266071 China Key Laboratory of Experimental Marine Biology Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China School of life Sciences Shandong University of Technology Zibo 255049 China

Newly regenerated thalli were used to study the phototropism of Bryopsis hypnoides Lamouroux under different qualities of light. Positive phototropism in the thalli and negative phototropiam In the rhizoida of B. hypnoides were investigated and analyzed in terms of bending. Both thaiii and rhlzoids developed from thallus segments exhibited typical tip growth, and their photoreceptive sites for phototroplam were also restricted to the apical hemisphere. The bending curvature of rhizoids and thalli were determined with unilateral lights at various wavelengths and different fluence rates after a fixed duration of Illumination. The trends of bending from the rhizoid and thallus were coincident, which showed that the action spectrum had a large range, from ultraviolet radiation （366.5 nm） to green light （524 nm）. Based on the bending curvatures, blue light had the highest efficiency, while the efficiency of longer wavelengths （〉500 nm） was significantly lower. External Ca^2＋ had no effect on the bending curvature of thalli and rhlzolda. Blue light （440 nm） induced thallus branching from rhizoids, while red light （650 nm） had no such effect. Fast-occurring chloroplast accumulation In the outermost cytoplasmic layer of the blue light （440 nm）-Irradiated region In the rhizoid was observed, from which protrusions （new thalli） arose after 4 h of the onset of illumination, and this action was thought to be driven by the dynamics of actin microfilamenta.

关键词： Bryopsis hypnoides chloroplast accumulation phototropism rhizoid thallus

Application of response surface methodology for optimization of Orange Ⅱ removal by heterogeneous Fenton-like process using Fe_3O_4nanoparticles

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Chinese Chemical Letters 2014年第11期25卷 1455-1460页

作者： Kun Chen guang-Hua Wang Wen-Bing li Dong Wan Qin Hu Lu-Lu Lu College of Chemical Engineering and Technology Wuhan University of Science and Technology

In this study, Fe3O4nanoparticles（Fe3O4NPs） were successfully prepared via oxidation–precipitation method and characterized by scanning electron microscopy（SEM）, X-ray diffraction（XRD） and Fourier transform infrared spectroscopy（FT-IR）. The characterization results indicated that Fe3O4 NPs with regular crystal structure and a narrow of diameters had been synthesized successfully and had high purity. A series of experiments were carried out to investigate the degradation of Orange II by the obtained heterogeneous Fe3O4 catalysts in the presence of H2O2. The response surface methodology（RSM） based on Box–Behnken design（BBD） was employed to design and optimize individual and interactive effects of the four main independent parameters（catalyst loading, initial p H, reaction temperature and H2O2concentration） on decolorization efficiency of Orange II. A significant quadratic model（p-value 〈0.0001, R2= 0.9369） was derived using analysis of variance（ANOVA）. Optimum conditions were catalyst loading of 1.5 g/L, initial p H of 2.7, reaction temperature of 42 8C and H2O2 concentration of 22 mmol/L, respectively. The predicted decolorization rate under the optimum conditions as determined by the proposed model was 99.55%. Confirmatory tests were carried out and the decolorization rate of 99.49% was observed under the optimum conditions, which agreed well with the model prediction.

关键词： Fe3O4 nanoparticles Heterogeneous Fenton-like Orange II Response surface methodology

Preparation of Poly(phosphoric acid piperazine) and Its Application as an Effective Flame Retardant for Epoxy Resin

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Chinese Journal of Polymer Science 2018年第5期36卷 655-664页

作者： Miao-Jun Xu Si-yu Xia Chuan liu Bin li Heilongjiang Key Laboratory of Molecular Design and Preparation of Flame Retarded Materials College of Science Northeast Forestry University

A phosphorus-nitrogen containing flame retardant additive of poly（phosphoric acid piperazine）, defined as PPAP, was synthesized by the salt-forming reaction between anhydrous piperazine and phosphoric acid, and the dehydration polymerization under heating in nitrogen atmosphere. Its chemical structure was well characterized by Fourier transform infrared（FTIR） spectroscopy, ^（13）C and ^（31）P solid-state nuclear magnetic resonance measurements. The synthesized PPAP and curing agent m-phenylenediamine were blended into epoxy resin（EP） to prepare flame retardant EP thermosets. The effects of PPAP on the fire retardancy and thermal degradation behavior of cured EP/PPAP composites were investigated by limiting oxygen index（LOI）, vertical burning（UL-94）, thermogravimetric analysis/infrared spectrometry（TG-IR） and cone calorimeter tests. The morphologies and chemical compositions of char residues for cured epoxy resin were investigated by scanning electron microscopy（SEM） and X-ray photoelectron spectroscopy（XPS）, respectively. The results demonstrated that the flame retardant EP thermosets successfully passed UL-94 V-0 flammability rating and the LOI value was as high as 30.8% when incorporating 5 wt% PPAP into the EP thermosets. The TGA results indicated that the synthesized PPAP flame retardant additive possessed high thermal stability and excellent charring capability. Meanwhile, the incorporation of PPAP stimulated the epoxy resin matrix to decompose and charring ahead of time due to its catalytic decomposition effect, which led to a higher char yield at high temperature. The morphological structures and the analysis results of XPS for char residues of EP thermosets revealed that the introduction of PPAP benefited the formation of a sufficient, more compact and homogeneous char layer containing phosphorus-nitrogen flame retardant elements on the material surface during combustion. The formed char layer with high quality effectively prevented the heat transmission and d

关键词： Synthesis Poly(phosphoric acid piperazine) Flame retardant Epoxy resin thermosets Thermal degradation

Synthesis and Crystal Structure of a Three-dimensional (3D) Complex Mn(H_2O)_2(HNic)_2 (HNic=2-Hydroxynicotinic Acid)

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Chinese Journal of Structural Chemistry 2006年第5期25卷 572-576页

作者： li yu-Mei CHE yun-Xia ZHENG Ji-Min Department of Chemistry Nankai University Tianjin 300071 China

The title complex Mn（H2O）2（HNic）2 （C22H12MnN2O8, Mr = 367.18） crystallizes in monoclinic, space group P21/c with a = 7.5735（8）, b = 12.5295（13）, c = 7.6466（8）A.β = 101.2790（10）°, Z = 2, V= 711.59（13） A^3, D, = 1.714 g/cm^3,μ（MoKa） = 0.974 mm^-1, F（000） = 374, R1 （1255 observed reflections （Ⅰ 〉 2σ（Ⅰ）） = 0.0250） and wR2 = 0.0662 （all data）. In this paper, we report the complexation of Mn（Ⅱ） by the bidentate ligand 2-hydroxynicotinic acid （HNic）. In the crystal the Mn（Ⅱ） ion exhibits a deformed octahedron structure. The title complex Mn（H2O）2（HNic）2 has a three-dimensional （3D） network structure extended by hydrogen bonds, which are formed by two typical eight-membered hydrogen-bonded rings.

关键词： complex crystal structure three-dimensional network

On-machine Precision Preparation and Dressing of Ball-headed Diamond Wheel for the Grinding of Fused Silica

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Chinese Journal of Mechanical Engineering 2013年第5期26卷 982-987页

作者： CHEN Mingjun li Ziang yu Bo PENG Hui FANG Zhen Center for Precision Engineering Harbin Institute of technology The 26th Research Institute China Electronics Technology Group Corporation

In the grinding of high quality fused silica parts with complex surface or structure using ball-headed metal bonded diamond wheel with small diameter,the existing dressing methods are not suitable to dress the ball-headed diamond wheel precisely due to that they are either on-line in process dressing which may causes collision problem or without consideration for the effects of the tool setting error and electrode *** on-machine precision preparation and dressing method is proposed for ball-headed diamond wheel based on electrical discharge *** using this method the cylindrical diamond wheel with small diameter is manufactured to hemispherical-headed *** obtained ball-headed diamond wheel is dressed after several grinding passes to recover geometrical accuracy and sharpness which is lost due to the wheel wear.A tool setting method based on high precision optical system is presented to reduce the wheel center setting error and dimension *** effect of electrode tool wear is investigated by electrical dressing experiments,and the electrode tool wear compensation model is established based on the experimental results which show that the value of wear ratio coefficient K’ tends to be constant with the increasing of the feed length of electrode and the mean value of K’ is *** experiments of fused silica are carried out on a test bench to evaluate the performance of the preparation and dressing *** experimental results show that the surface roughness of the finished workpiece is 0.03 μ*** effect of the grinding parameter and dressing frequency on the surface roughness is investigated based on the measurement results of the surface *** research provides an on-machine preparation and dressing method for ball-headed metal bonded diamond wheel used in the grinding of fused silica,which provides a solution to the tool setting method and the effect of electrode tool wear.

关键词： precision preparation electrical discharge dressing ball-headed diamond wheel fused silica

Transcription factor Dmrt1 triggers the SPRY1-NF-κB pathway to maintain testicular immune homeostasis and male fertility

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Zoological Research 2023年第3期44卷 505-521页

作者： Meng-Fei Zhang Shi-Cheng Wan Wen-Bo Chen Dong-Hui Yang Wen-Qing liu Ba-Lun li Aili Aierken Xiao-Min Du yun-Xiang li Wen-Ping Wu Xin-Chun Yang yu-Dong Wei Na li Sha Peng Xue-ling li guang-Peng li Jin-lian Hua College of Veterinary Medicine Shaanxi Centre of Stem Cells Engineering&TechnologyNorthwest A&F UniversityYanglingShaanxi 712100China Center of Reproductive Medicine Amsterdam Research Institute Reproduction and DevelopmentAcademic Medical CenterUniversity of Amsterdam 1105AZAmsterdamNetherlands Key Laboratory for Mammalian Reproductive Biology and Biotechnology Ministry of EducationInner Mongolia UniversityHohhotInner Mongolia 010021China Key Laboratory of livestock Biology Northwest A&F UniversityYanglingShaanxi 712100China

Bacterial or viral infections,such as Brucella,mumps virus,herpes simplex virus,and Zika virus,destroy immune homeostasis of the testes,leading to spermatogenesis disorder and *** note,recent research shows that SARS-CoV-2 can infect male gonads and destroy Sertoli and Leydig cells,leading to male reproductive *** to the many side effects associated with antibiotic therapy,finding alternative treatments for inflammatory injury remains ***,we found that Dmrt1 plays an important role in regulating testicular immune *** of Dmrt1 in male mice inhibited spermatogenesis with a broad inflammatory response in seminiferous tubules and led to the loss of spermatogenic epithelial *** immunoprecipitation sequencing(ChIP-seq)and RNA sequencing(RNA-seq)revealed that Dmrt1 positively regulated the expression of Spry1,an inhibitory protein of the receptor tyrosine kinase(RTK)signaling ***,immunoprecipitation-mass spectrometry(IP-MS)and co-immunoprecipitation(Co-IP)analysis indicated that SPRY1 binds to nuclear factor kappa B1(NF-κB1)to prevent nuclear translocation of p65,inhibit activation of NF-κB signaling,prevent excessive inflammatory reaction in the testis,and protect the integrity of the blood-testis *** view of this newly identified Dmrt1-Spry1-NF-κB axis mechanism in the regulation of testicular immune homeostasis,our study opens new avenues for the prevention and treatment of male reproductive diseases in humans and livestock.

关键词： Dmrt1 Spermatogenesis Orchitis Spry1 NF-κB

Biological sulfate removal from acrylic fiber manufacturing wastewater using a two-stage UASB reactor

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Journal of Environmental Sciences 2012年第2期24卷 343-350页

作者： Jin li Jun Wang Zhaokun Luan Zhongguang Ji lian yu State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China

A two-stage UASB reactor was employed to remove sulfate from acrylic fiber manufacturing *** operation（35±0.5℃） was performed with hydraulic retention time（HRT） varied between 28 and 40 *** liquor suspended solids（MLSS） in the reactor was maintained about 8000 mg/*** results indicated that sulfate removal was enhanced with increasing the ratio of COD/SO24-.At low COD/SO42-,the growth of the sulfate-reducing bacteria（SRB） was *** optimal sulfate removal efficiencies were 75% when the HRT was no less than 38 *** mainly happened in the sulfate-reducing stage,while methanogenesis in the methane-producing *** in sulfate-reducing stage performed granulation better than that in methaneproducing *** extracellular polymeric substances（EPS） content in sulfate-reducing stage helped to adhere and connect the flocculent sludge particles *** accounted for about 31% both in sulfate-reducing stage and methane-producing stage at COD/SO42-ratio of 0.5,while it dropped dramatically from 34% in sulfate-reducing stage to 10% in methane-producing stage corresponding to the COD/SO42-ratio of *** and MPA were predominant in sulfate-reducing stage and methane-producing stage respectively.

关键词： a two-stage UASB reactor sulfidogenesis granule fluorescence in situ hybridization(FISH)

Quantitative changes of nitrergic neurons during postnatal development of chicken myenteric plexus

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2013年第10期14卷 886-895页

作者： Ping YANG Jameel Ahmed GANDAHI Qian ZHANG lin-li ZHANG Xun-guang BIAN li WU Yi liU Qiu-sheng CHEN Key Laboratory of Animal Physiology and Biochemistry College of Veterinary MedicineNanjing Agricultural University Department of Anatomy and Histology Sindh Agriculture University

Objective: Information regarding the development of the enteric nervous system(ENS) is important for understanding the functional abnormalities of the *** fertilized chicken eggs provide easy access to embryos,chicken models have been widely used to study embryonic development of myenteric plexus;however,no study has been focused on the postnatal *** aim of this study was to perform a qualitative and quantitative analysis of the nitrergic neurons in the myenteric plexus of developing chickens in the postnatal ***: Whole-mount preparations of the myenteric plexus were made in 7-d,15-d,and 40-d old(adult) chickens of either sex(n=15).The myenteric plexus was studied after nicotinamide adenine dinucleotide phosphate diaphorase(NADPH-d) histochemistry using light microscopy,digital photography,and Image-Pro Plus 6.0 *** numbers of positively stained neurons and ganglia were counted in the duodenum,jejunum,ileum,caecum,and colon in the different age *** were expressed as mean±standard deviation(SD),and statistical analysis was performed using a one-way analysis of variance(ANOVA) ***: The positively stained neurons showed various morphologies and staining intensities,and formed bead-shaped and U-shaped arrangements in the myenteric *** densities of neurons and ganglia increased with ***,the number of positive neurons per ganglion *** number of NADPH-d-positive neurons was highest in the colon,followed by the ileum,the jejunum,the duodenum,and the caeca in all age ***: Developmental changes in the myenteric plexus of chickens continue in the postnatal period,indicating that the maturation process of the gastrointestinal function is *** addition,no significant difference is happening among different intestinal segments during postnatal development,suggesting that the function of different intestinal segments had been determined after birth.

关键词： NADPH-d histochemistry Enteric nervous system(ENS) Development Myenteric plexus Chicken