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| 1 | Technology and Experiments of 42CrMo Bearing Ring Forming Based on Casting Ring Blank显示文摘Bearing ring is the crucial component of bearing. With regard to such problems as material waste, low efficiency and high energy consumption in current process of producing large bearing ring, a new process named 'casting-rolling compound forming technology' is researched by taking the typical 42CrMo slew bearing as object. Through theoretical analysis, the design criteria of the main casting-rolling forming parameters are put forward at first. Then the constitutive relationship model of as-cast 42CrMo steel and its mathematical model of dynamic recrystallization are obtained according to the results of the hot compression experiment. By a coupled thermal-mechanical finite element model for radial-axial rolling of bearing ring, the fraction of dynamic recrystallization is calculated and recrystallized grains size are predicated. Meanwhile, the effects of the initial rolling temperature and feed rate of idle roll on material microstructure evolution are analyzed. Finally, the industrial rolling experiment is designed and performed, based on the simulation results. In addition, mechanical and metallographic tests are conducted on rolled bearing ring to get the mechanical parameters and metallographic structure. The experimental data and results show that the mechanical properties of bearing ring produced by casting-rolling compound forming technology are up to industrial standard, and a qualified bearing ring can be successfully formed by employing this new technology. Through the study, a process of forming large bearing ring directly by using casting ring blank is obtained, which could provide an effective theoretical guidance for manufacturing large ring parts. It also has an edge in saving material, lowering energy and improving efficiency. | LI Yongtang JU Li QI Huiping ZHANG Feng CHEN Guozhen WANG Mingli | 2014 | Chinese Journal of Mechanical Engineering2014，27，2： | 16 |
| 2 | Nitrogen-doped fluorescence carbon dots as multi-mechanism detection for iodide and curcumin in biological and food samples显示文摘Iodine ion is one of the most indispensable anions in living organisms,particularly being an important substance for the synthesis of thyroid hormones.Curcumin is a yellow-orange polyphenol compound derived from the rhizome of Curcuma longa L.,which has been commonly used as a spice and natural coloring agent,food additives,cosmetics as well as Chinese medicine.However,excess curcumin may cause DNA inactivation,lead to a decrease in intracellular ATP levels,and trigger the tissue necrosis.Therefore,quantitative detection of iodine and curcumin is of great significance in the fields of food and life sciences.Herein,we develop nitrogen-doped fluorescent carbon dots(NCDs)as a multi-mechanism detection for iodide and curcumin in actual complex biological and food samples,which was prepared by a one-step solid-phase synthesis using tartaric acid and urea as precursors without adding any other reagents.An assembled NCDs-Hg^(2+) fluorescence-enhanced sensor for the quantitative detection of I^(-) was established based on a fluorescence“turn-off-on”mechanism in a linear range of 0.3-15μM with a detection limit of 69.4 nM and successfully quantified trace amounts of I^(-) in water samples and urine sample.Meanwhile,the as-synthesized NCDs also can be used as a fluorescent quenched sensor for curcumin detection based on the synergistic internal filtration effect(IFE)and static quenching,achieving a good linear range of 0.1-20μM with a satisfactory detection limit of 29.8 nM.These results indicate that carbon dots are potential sensing materials for iodine and curcumin detection for the good of our health. | Xiaodan Tang Hongmei Yu Brian Bui Lingyun Wang Christina Xing Shaoyan Wang Mingli Chen Zhizhi Hu Wei Chen | 2021 | Bioactive Materials2021，6，6： | 11 |
| 3 | Adsorption of VOCs on reduced graphene oxide显示文摘A modified Hummer's method was adopted for the synthesis of graphene oxide(GO) and reduced graphene oxide(rGO). It was revealed that the modified method is effective for the production of GO and rGO from graphite. Transmission electron microscopy(TEM) images of GO and rGO showed a sheet-like morphology. Because of the presence of oxygenated functional groups on the carbon surface, the interlayer spacing of the prepared GO was higher than that of rGO. The presence of \OH and C_O groups in the Fourier transform infrared spectra(FTIR) spectrum and G-mode and 2D-mode in Raman spectra confirmed the synthesis of GO and rGO. rGO(292.6 m^2/g) showed higher surface area than that of GO(236.4 m^2/g). The prepared rGO was used as an adsorbent for benzene and toluene(model pollutants of volatile organic compounds(VOCs)) under dynamic adsorption/desorption conditions. rGO showed higher adsorption capacity and breakthrough times than GO. The adsorption capacity of rGO for benzene and toluene was 276.4 and 304.4 mg/g, respectively.Desorption experiments showed that the spent rGO can be successfully regenerated by heating at 150.0°C. Its excellent adsorption/desorption performance for benzene and toluene makes rGO a potential adsorbent for VOC adsorption. | Lian Yu Long Wang Weicheng Xu Limin Chen Mingli Fu Junliang Wu Daiqi Ye | 2018 | Journal of Environmental Sciences2018，30，5： | 10 |
| 4 | Highly efficient Cu/anatase TiO2 {001}-nanosheets catalysts for methanol synthesis from CO2显示文摘Anatase TiO_2 nanosheets(-ns-) with dominant exposed {001} facets were used as support to load copper,and the synthesized Cu/TiO_2-ns catalysts were evaluated for CO_2 hydrogenation to methanol. Under the reaction conditions, P = 3.0 MPa, T = 260 ℃, V(N_2):V(H_2):V(CO_2) = 8:69:23 and gas hourly space velocity(GHSV) = 3600 mL g^(-1)h^(-1), the methanol yield reached an appealing high value, 5.6%. Copper-loading amount, calcination temperature and reduction atmosphere have been investigated in this work, which significantly influence the particle sizes of copper and/or the defect concentration in TiO_2, then leading to different catalytic performance. Characterizations of XRD, EPR, CO_2-TPD and FTIR demonstrate that higher specific surface area of Cu is good for the hydrogenation of CO_2 and adequate amount of Ti^(3+) plays important roles in CO_2 activation. Both of them facilitate high turnover frequency(TOF) of methanol formation. | Yunfeng Bao Chunlei Huang Limin Chen Yu dong Zhang Long Liang Jinjun Wen Mingli Fu Junliang Wu Daiqi Ye | 2018 | Journal of Energy Chemistry2018，27，2： | 7 |
| 5 | Doping bioactive elements into a collagen scaffold based on synchronous self-assembly/mineralization for bone tissue engineering显示文摘Pure collagen is biocompatible but lacks inherent osteoinductive,osteoimmunomodulatory and antibacterial activities.To obtain collagen with these characteristics,we developed a novel methodology of doping bioactive elements into collagen through the synchronous self-assembly/mineralization(SSM)of collagen.In the SSM model,amorphous mineral nanoparticles(AMN)(amorphous SrCO3,amorphous Ag3PO4,etc.)stabilized by the polyampholyte,carboxymethyl chitosan(CMC),and collagen molecules were the primary components under acidic conditions.As the pH gradually increased,intrafibrillar mineralization occurred via the self-adaptive interaction between the AMNs and the collagen microfibrils,which were self-assembling;the AMNs wrapped around the microfibrils became situated in the gap zones of collagen and finally transformed into crystals.Srdoped collagen scaffolds(Sr-CS)promoted in vitro cell proliferation and osteogenic differentiation of rat bone marrow mesenchymal stromal cells(rBMSCs)and synergistically improved osteogenesis of rBMSCs by altering the macrophage response.Ag-doped collagen scaffolds(Ag-CS)exhibited in vitro antibacterial effects on S.aureus,as well as cell/tissue compatibility.Moreover,Sr-CS implanted into the calvarial defect of a rat resulted in improved bone regeneration.Therefore,the SSM model is a de novo synthetic strategy for doping bioactive elements into collagen,and can be used to fabricate multifunctional collagen scaffolds to meet the clinical challenges of encouraging osteogenesis,boosting the immune response and fighting severe infection in bone defects. | Huanhuan Liu Mingli Lin Xue Liu Ye Zhang Yuyu Luo Yanyun Pang Haitao Chen Dongwang Zhu Xue Zhong Shiqing Ma Yanhong Zhao Qiang Yang Xu Zhang | 2020 | Bioactive Materials2020，5，4： | 6 |
| 6 | High pulse energy fiber/solid-slab hybrid picosecond pulse system for material processing on polycrystalline diamonds显示文摘We demonstrate an all polarization-maintaining(PM) fiber mode-locked laser seeded, hybrid fiber/solid-slab picosecond pulse laser system which outputs 40 μJ, 10 ps pulses at the central wavelength of 1064 nm. The beam quality factors M2 in the unstable and stable directions are 1.35 and 1.31, respectively. 15 μJ picosecond pulses at the central wavelength of 355 nm are generated through third harmonic generation(THG) by using two Li B3 O5(LBO) crystals, in order to get better processing efficiency on polycrystalline diamonds. The high pulse energy and beam quality of these ultraviolet(UV) picosecond pulses are confirmed by latter experiments of material processing on polycrystalline diamonds. This scheme which combines the advantages of the all PM fiber mode-locked laser and the solid-slab amplifier enables compact, robust and chirped pulse amplification-free amplification with high power picosecond pulses. | Wei Chen Bowen Liu Youjian Song Lu Chai Qianjin Cui Qingjing Liu Chingyue Wang Minglie Hu | 2018 | High Power Laser Science and Engineering2018，6，2： | 5 |
| 7 | Macroporous Ni foam-supported Co_3O_4 nanobrush and nanomace hybrid arrays for high-efficiency CO oxidation显示文摘Herein, we reported the synthesis of well-defined Co_3O_4 nanoarrays(NAs) supported on a monolithic three-dimensional macroporous nickel(Ni) foam substrate for use in highefficiency CO oxidation. The monolithic Co_3O_4 NAs catalysts were obtained through a generic hydrothermal synthesis route with subsequent calcination. By controlling the reaction time,solvent polarity and deposition agent, these Co_3O_4 NAs catalysts exhibited various novel morphologies(single or hybrid arrays), whose physicochemical properties were further characterized by using several analytical techniques. Based on the catalytic and characterization analyses, it was found that the Co_3O_4 NAs-6 catalyst with nanobrush and nanomace arrays displayed enhanced catalytic activity for CO oxidation, achieving an efficient 100% CO oxidation conversion at a gas hourly space velocity(GHSV) 10,000 hr^(-1) and 150°C with longterm stability. Compared with the other Co_3O_4 NAs catalysts, it had the highest abundance of surface-adsorbed oxygen species, excellent low-temperature reducibility and was rich in surface-active sites(Co^(3+)/Co^(2+)= 1.26). | Shengpeng Mo Hui He Quanming Ren Shuangde Li Weixia Zhang Mingli Fu Limin Chen Junliang Wu Yunfa Chen Daiqi Ye | 2019 | Journal of Environmental Sciences2019，31，1： | 4 |
| 8 | Experimental study on the partial discharge and AC breakdown properties of C_(4)F_(7)N/CO_(2)mixture显示文摘As an environmental friendly insulating medium,C_(4)F_(7)N has received extensive attention in the past two years.In this study,the partial discharge(PD)and breakdown characteristics of C_(4)F_(7)N/CO_(2)gas mixture were investigated using the gas insulation performance test platform.The influence of gas pressure and mixing ratio on the PD initial voltage(PDIV)and breakdown voltage of C_(4)F_(7)N/CO_(2)gas mixture in different electric fields was tested.It was found that the PDIV and breakdown voltage of gas mixture with 2-8%C_(4)F_(7)N in the highly non-uniform field showed a linear saturation increasing trend with the change of gas pressure and mixing ratio.The breakdown voltage of gas mixture increases linearly with gas pressure in the quasi-uniform electric field.The relative breakdown voltage of gas mixture in the highly non-uniform field under high-pressure conditions is inferior to those of low-pressure conditions.The C_(4)F_(7)N/CO_(2)gas mixture containing 2-8%C_(4)F_(7)N is sensitive to the non-uniformity of electric field.According to the PD and breakdown tests results,C_(4)F_(7)N/CO_(2)gas mixture with 2-8%C_(4)F_(7)N has the potential to replace SF6 using in gas-insulated equipment. | Yi Li Xiaoxing Zhang Ji Zhang Mingli Fu Ran Zhuo Yi Luo Dachang Chen Song Xiao | 2019 | High Voltage2019，4，1： | 4 |
| 9 | Oxidation and Thermal Shock Behavior of a Glass-Alumina Composite Coating on K38G Superalloy at 1000℃显示文摘The glass-alumina composite coatings were successfully prepared on the K38G superalloy substrates.Their isothermal oxidation and thermal shock behavior at 1000 ℃ were characterized.With a post-annealing process at 850 ℃,the composite coatings possessed an improved protective effect for the alloy substrates from isothermal oxidation and a higher resistance to thermal shock.Crystallization from the glass matrix and interfacial reaction between the matrix and alumina inclusions,which caused the composites more refractory and tough,accounted for this improvement.The micromechanisms for the formation of oxidation results of spinel ZnCr_2O_4 were also discussed. | Minghui Chen Mingli Shen Xin Wang Shenglong Zhu Fuhui Wang | 2012 | Journal of Materials Science & Technology2012，28，5： | 4 |
| 10 | Rett syndrome-causing mutations compromise MeCP2- mediated liquid—liquid phase separation of chromatin显示文摘Rett syndrome(RTT),a severe postnatal neurodevelopmental disorder,is caused by mutations in the X-linked gene encoding methyl-CpG-binding protein 2(MeCP2).MeCP2 is a chromatin organizer regulating gene expression.RTT-causing mutations have been shown to affect this function.However,the mechanism by which MeCP2 organizes chromatin is unclear.In this study,we found that MeCP2 can induce compaction and liquid-liquid phase separation of nudeosomal arrays in vitro,and DNA methylation further enhances formation of chromatin condensates by MeCP2.Interestingly,RTT-causing mutations compromise MeCP2-mediated chromatin phase separation,while benign variants have little effect on this process.Moreover,MeCP2 competes with linker histone H1 to form mutually exclusive chromatin condensates in vitro and distinct heterochromatin foci in vivo.RTT-causing mutations reduce or even abolish the ability of MeCP2 to compete with histone H1 and to form chromatin condensates.Together,our results identify a novel mechanism by which phase separation underlies MeCP2-mediated heterochromatin formation and reveal the potential link between this process and the pathology of RTT. | Liang Wang Mingli Hu Mei-Qing Zuo Jicheng Zhao Di Wu Li Huang Yongxin Wen Yunfan Li Ping Chen Xinhua Bao Meng-Qiu Dong Guohong Li Pilong Li | 2020 | Cell Research2020，30，5： | 3 |
| 11 | Selective Introduction of Carbazole and Diphenylamine into Spirofluorenexanthene Core for Different Phosphorescent Hosts显示文摘Built on the spiro[fluorene-9,9'-xanthene] (SFX) core and two frequently-used hole-transporting groups such ascarbazole and diphenylamine, two SFX derivatives, namely SFXCz and SFXDPA, have been synthesized byone-step reaction for red, green and blue phosphorescent organic light-emitting devices (PHOLEDs). Though theproperties of these two groups are very similar, the devices based on SFXCz and SFXDPA exhibit distinct perfor-mances. In blue PHOLEDs, the device based on SFXCz exhibited much better performances than that based onSFXDPA. However, the latter was superior to the former in green and red PHOLEDs. And the red PHOLED basedon SFXDPA exhibited maximum current efficiency (CE) of 27.1 cdoA^-l, power efficiency (PE) of 25.01m·W^-1, andexternal quantum efficiency (EQE) of 15.0%. The results show that the introduction of diphenylamine group issuitable for constructing green and red host materials, whereas the introduction of carbazole group is suitable forconstructing blue host materials. | Mingli Sun Shouzhen Yue Hongtao Cao Changjin Ou Yan Qian Ting Wang Ligang Chen Yi Zhao Wei Huang | 2016 | Chinese Journal of Chemistry2016，34，8： | 3 |
| 12 | Dual functional AgNPs-M13 phage composite serves as antibacterial film and sensing probe for monitoring the corrosion of chromium-containing dental alloys显示文摘The preparation of silver nanoparticles(AgNPs)with microbe or plant tissues as bio-template offers green approach,while it suffers from low harvest and purification is needed.Herein,we propose a facile protocol for one-pot preparation of AgNPs using M13 phage as bio-template by simply mixing AgN03 solution with alkali M13 phage.In the obtained AgNPs-M13 phage composite,Cr(Ⅲ)selectively coordinates with the amino residues on phage surface and leads to the aggregation of AgNPs through the bridging of M13 phages.This makes it feasible for colorimetric sensing of Cr(Ⅲ)by measuring the absorbance ratio of AgNPs at 600 and 405 nm,which provides a LOD of 14 nmol/L.The composite also showed favorable bactericidal activity for both Gram-positive and Gram-negative bacteria,making it a promising candidate as antibacterial film in chromium-containing dental alloys and meanwhile serve as a sensing probe for monitoring the corrosion of the dental alloys. | Ting Yang Na Li Xiaoyan Wang Jian Zhai Bo Hu Mingli Chen Jianhua Wang | 2020 | Chinese Chemical Letters2020，31，1： | 2 |
| 13 | Effect of La_(2)O_(3) addition on the synthesis of tungsten nanopowder via combustion-based method显示文摘In this study, the influences of La_(2)O_(3) added on the phase, morphology and reduction process of tungsten oxide prepared by solution combustion synthesis(SCS) were investigated for the first time. And tungsten nanopowders with different La_(2)O_(3) doping amount(0.5~5.0 wt%) were successfully prepared by SCS and followed hydrogen reduction. The results showed that with the increase of La_(2)O_(3) addition,the product synthesized by SCS changed from needle-like W_(18) O_(49) to irregularly granulated H0.53 WO3 and the complete reduction temperature also increased form 700°C to 850°C. The densification behavior of as-prepared W nanopowders revealed that the densification inhibitory effect of La_(2)O_(3) was enhanced as the La_2O_3 addition increased. Nevertheless, due to the optimal size and distribution of La_(2)O_(3) particles,the sample with 2.0 wt% La_(2)O_(3) addition has a smallest grain size of 0.47 μm and a highest microhardness value of 739.3 Hv0.2, which are the best compared with the literature. | Zheng Chen Mingli Qin Junjun Yang Lin Zhang Baorui Jia Xuanhui Qu | 2020 | Journal of Materials Science & Technology2020，58，23： | 2 |
| 14 | Construction of Cu-Ce interface for boosting toluene oxidation:Study of Cu-Ce interaction and intermediates identified by in situ DRIFTS显示文摘A facile hydrothermal method was applied to gain stably and highly efficient CuO-CeO_(2)(denoted as Cu1Ce2)catalyst for toluene oxidation.The changes of surface and inter properties on Cu1Ce2 were investigated comparing with pure CeO_(2)and pure CuO.The formation of Cu-Ce interface promotes the electron transfer between Cu and Ce through Cu^(2+)+Ce^(3+)↔Cu^(+)+Ce^(4+)and leads to high redox properties and mobility of oxygen species.Thus,the Cu1Ce2 catalyst makes up the shortcoming of CeO_(2)and CuO and achieved high catalytic performance with T_(50)=234°C and T_(99)=250°C(the temperature at which 50%and 90%C_(7)H_(8)conversion is obtained,respectively)for toluene oxidation.Different reaction steps and intermediates for toluene oxidation over Cu1Ce2,CeO_(2)and CuO were detected by in situ DRIFTS,the fast benzyl species conversion and preferential transformation of benzoates into carbonates through C=C breaking over Cu1Ce2 should accelerate the reaction. | Jiahui Lu Jinping Zhong Quanming Ren Jiaqi Li Linghe Song Shengpeng Mo Mingyuan Zhang Peirong Chen Mingli Fu Daiqi Ye | 2021 | Chinese Chemical Letters2021，32，11： | 2 |
| 15 | Enhancement of Fe3O4/Au Composite Nanoparticles Catalyst in Oxidative Degradation of Methyl Orange Based on Synergistic Effect显示文摘Fe 3 O 4/Au nanoparticles (Fe 3 O 4/Au NP ) 催化剂被采用 H 2 O 2 作为氧化剂。评估 Fe 3 O 4/Au nanoparticles,不同降级条件被调查例如催化剂的数量, H 2 O 2 集中和 pH 价值。基于我们的数据,甲基橘子在一短时间完全被降级。提高的催化活动和增加的氧化率常数可以被归功于到 synergistic H 2 O 2 到哦激进,它是强壮的氧化种类之一。而且, Fe 3 O 4/Au nanoparticles 展出了令人满意为潜在的工业申请再循环性能。 | Qin Gao Yan Xing Mingli Peng Yongshuai Liu Zhiyi Luo Yanyan Jin Haiming Fan Kebin Li Chao Chen Yali Cui | 2017 | Chinese Journal of Chemistry2017，35，9： | 2 |
| 16 | Experimental study on methane dissolved in surfactant-alkane system显示文摘A surfactant-polyalkane system is investigated using chemical reagents to dissolve methane and control coal seam gas from low-energy,high-efficiency,safety,and environmental protection perspectives.At different temperatures and pressures,a high-temperature and high-pressure reactor,gas chromatograph,and other related experimental equipment were used to perform methane dissolution experiments,and a single surfactant sodium oleate(NaOA)and n-hexane demonstrated superior results.The single-factor experiments of temperature,pressure,and NaOA addition were performed and fitted via a response surface analysis.The optimal conditions for methane solubility were as follows:temperature of 34C,pressure of 4.5 MPa,NaOA addition of 85 g/L,and time of 1 h.The optimal effect of the surfactant-polyalkane system in dissolving methane was achieved with 32.31 mL/100 mL.Meanwhile,the change in the surface structure of coal before and after washing with the system was compared using scanning electron microscopy.The results indicated that the gas after washing with the surfactant-polyalkane system dissolved,and the surface pore structure of the coal changed.Moreover,the specific surface area and pore size of the coal surface increased after washing.Hence,the desorption of gas from the coal surface into the system becomes easy,thereby reducing the gas content in the coal sample. | Zhian Huang Mingli Chen Jingjing Wang Yinghua Zhang Linghua Zhang Hui Wang Yukun Gao Yupeng Zhou | 2020 | International Journal of Mining Science and Technology2020，30，6： | 2 |
| 17 | Speciation of inorganic arsenic in a sequential in jection dual mini-column system coupled with hydride generation atomic fluorescence spec Trometry 显示文摘 | Mingli Chen Yumei Huo JianhuaWang | 2009 | Talanta2009，78，： | 1 |
| 18 | A novel non-precious metal catalyst synthesized via pyrolysis of polyaniline-coated tungsten carbide particles for oxygen reduction reaction显示文摘 | Kezhu Jiang Qingmin Jia Mingli Xu Daping Wu Lunquan Yang Guotao Yang Linyan Chen Guanghua Wang Xikun Yang | 2012 | Journal of Power Sources2012，，： | 1 |
| 19 | Genetic analysis of the VP1 region of enterovirus 71 reveals the emergence of genotype A in central China in 2008显示文摘 | Haiyang Yu Wei Chen Hongwei Chang Renshu Tang Jun Zhao Lin Gan Boyu Liu Jason Chen Mingli Wang | 2010 | Virus Genes2010，，1： | 1 |
| 20 | Paleoecology of Oligocarpia gothanii Halle from the Middle Permian of Southeastern Shanxi,North China显示文摘Fossil ferns are abundant and diverse in the Permian Cathaysian Flora of Shanxi, North China. Although plants assemblages of the Carboniferous and Permian have been extensively investigated, their palaeoecology and especially the paleoecology of ferns has not been studied in detail. Recent reinvestigation of Oligocarpia gothanii has revealed its growth habit and cloning reproduction strategy, but most previous studies lack integrated sedimentological and taphonomic data. In this study, new materials of O. gothanii have been collected from a floodplain setting in the middle Permian Lower Shihhotse Formation of southeastern Shanxi. These plant fossils were found in a lenticular claystone associated with rooting structures. They are characterized by aphlebia at the base of the penultimate rachis. Sedimentological, taphonomic and morphological analyses were conducted to understand the growth habit and ecology of the fern. The result indicates that the Oligocarpia gothanii had a prostrate, ground cover growth habit, and was dominant in pioneer floras that colonized disturbed floodplains. | HE Xuezhi WAN Mingli YAN Mengxiao CHENG Chen WANG Shijun WANG Jun | 2015 | Acta Geologica Sinica(English Edition)2015，89，4： | 1 |
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