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| 1 | Glutathione S-transferase genes in scallops and their diverse expression patterns after exposure to PST-producing dinoflagellates显示文摘The glutathione S-transferases(GSTs)are a superfamily of enzymes that function in cellular protection against toxic substances and oxidative stress.Bivalves could accumulate high concentration of paralytic shellfish toxins(PSTs)from harmful algae.To understand the possible involvement of GSTs in protecting bivalves during PST accumulation and metabolism,the GST genes were systemically analyzed in two cultured scallops,Azumapecten farreri and Mizuhopecten yessoensis,which were reported for PST deposition during harmful algae bloom.A total of 35 and 37 GSTs were identified in A.farreri(AfGSTs)and M.yessoensis(MyGSTs)genome,respectively,and the expansion of the sigma class from the cytosolic subfamily was observed.In both scallop species,sigma class GSTs showed higher expression than other members.The high GSTs expression was detected mainly during/after larvae stages and in the two most toxic organs,hepatopancreas and kidney.After ingesting PST-producing dinoflagellates,all the regulated AfGSTs in the hepatopancrcas were from the sigma class,but with opposite regulation pattern between Alexandrium catenella and A.minutum exposure.In scallop kidneys,where PSTs transformed into higher toxicity,more AfGSTs were regulated than in the hepatopancreas,and most of them were from the sigma class,with similar regulation pattern between A.catenella and A.minutum exposure.In M.yessoensis exposed to A.catenella,MyGST-σ2 was the only up-regulated MyGST in both hepatopancreas and kidney.Our results suggested the possible diverse function of scallop GSTs and the importance of sigma class in the defense against PSTs,which would contribute to the adaptive evolution of scallops in marine environments. | Jiarun Lou Jie Cheng Xiaogang Xun Xu Li Moli Li Xiangchao Zhang Tingting Li Zhenmin Bao Xiaoli Hu | 2020 | Marine Life Science & Technology2020，2，3： | 2 |
| 2 | Wellbore stability analysis of layered shale based on the modified Mogi-Coulomb criterion显示文摘Borehole instability was frequently encountered during shale gas drilling.Most conventional models are not applicable to layered formation's wellbore stability analysis on account of anisotropic strength characteristic.In this study,an empirical equation for predicting anisotropic strength was implemented in the Mogi–Coulomb criterion to describe variations of cohesive strength and friction angle of shale formations.A collapse pressure model and its appropriate solution method for layered shale formations were proposed.The impact of different strength criteria and rock anisotropy type on rock strength and collapse pressure was investigated.The analysis indicated that the predicted strength of our modified criterion was usually higher than the weak plane failure criteria.The collapse pressure calculated by the modified Mogi–Coulomb criterion was lower than the weakplane failure criteria.Furthermore,it was more consistent with real mud weight.Additionally,the anisotropy type of rock notably influences wellbore stability.More significant anisotropy coefficients correspond to higher strengths,which results in smaller collapse pressure values.Improper anisotropy coefficients can over-or underpredict the collapse pressure.Reasonable estimates of collapse pressure of anisotropic rocks can be made through the modified Mogi–Coulomb criterion using limited experimental data and the anisotropy rock type. | Xu Yang Xiangchao Shi Yingfeng Meng Xiaoyong Xie | 2020 | Petroleum2020，6，3： | 1 |
| 3 | Hydrogen-induced disproportionation characteristics of Zr(1<ce:hsp sp='0.25'/>?<ce:hsp sp='0.25'/> x )Hf( x )Co( x显示文摘 | Lixia Peng Chunli Jiang Qinying Xu Xiangchao Wu | 2013 | Fusion Engineering and Design2013，，5： | 1 |
| 4 | Abnormal behaviors of Goos–Hänchenshift in hyperbolic metamaterials madeof aluminum zinc oxide materials显示文摘In this paper,the Goos–Hänchen shift(GHS)at the interface between air and the aluminum zinc oxide(AZO)/ZnO hyperbolic metamaterial(AZO-HMM)is theoretically examined.The results herein show that AZO-HMM can enhance the GHS at the interface to a value at 3 orders of the incident wavelength under special conditions,which is much larger than conventional GHS values.Moreover,the GHS can be tuned to be negative or positive by changing the incident wavelength or the volume fraction of AZO. | Jing Zhao Hao Zhang Xiangchao Zhang Dahai Li Hongliang Lu Min Xu | 2013 | Photonics Research2013，1，4： | 1 |
| 5 | A tutorial introduction to graphene-microfiber waveguide and its applications显示文摘 | Xiaoying HE Min XU Xiangchao ZHANG Hao ZHANG | 2016 | Frontiers of Optoelectronics2016，9，4： | 0 |
| 6 | Piezoelectric nanofoams with the interlaced ultrathin graphene confining Zn–N–C dipoles for efficient piezocatalytic H_(2) evolution under low-frequency vibration显示文摘Unique nanofoams consisting of interweaved ultrathin graphene confining Zn–N–C dipoles (ZnNG) are constructed via calcination of Zn-coordinated precursor.Due to the introduction of local polar Zn–N–C configurations,with hypersensitivity for mechanical stress,the piezoelectricity is created on the nonpiezoelectric graphene,and the hierarchical ZnNG exhibits obvious piezocatalytic activity of water splitting for H_(2) production even under mild agitation.The corresponding rate of H_(2) production is about 14.65 μmol g^(-1)h^(-1).It triggers a breakthrough in piezocatalytic H_(2) evolution under low-frequency vibration,and takes a significant step forward for piezocatalysis towards practical applications.Furthermore,the presented concept of confining atomic polar configuration for engineering piezoelectricity would open up new horizon for constructing new-type piezoelectrics based on both piezoelectric and nonpiezoelectric materials. | Penghui Hu Yan Xu Yanhua Lei Jie Yuan Rui Lei Rong Hu Junkang Chen Difa Xu Shiying Zhang Ping Liu Xiangchao Zhang Xiaoqing Qiu Wenhui Feng | 2022 | Journal of Energy Chemistry2022，31，6： | 0 |
| 7 | Development and experiments of low frequency ultrasonic electrostatic atomizing nozzle with double resonators显示文摘Fine droplets with high adhesion can greatly improve the efficiency of atomization culture.Therefore,the development of a spray nozzle that can produce fine fog droplets with high adhesion is of great significance for aeroponics.Compared to piezoelectric ultrasonic atomizer,Hartmann resonator low-frequency ultrasonic electrostatic atomizer has the advantages of large atomization volume and constant liquid chemical structure,but the droplet size is larger.High-speed gas can generate low-frequency ultrasonic vibration sound waves in Hartmann resonator.The frequency and intensity of sound waves determine the atomization performance of supersonic atomizer nozzle.However,very few research literatures can be found on how the structure and operating parameters of Hartmann resonator affect the atomization performance.In order to improve the atomization performance of ultrasonic atomizer,a two-stage Hartmann resonator low-frequency ultrasonic electrostatic atomizer was designed.The shrinkage-type Laval tube was designed by fluid mechanics theory,and the design results were verified by fluent software.The virtual orthogonal test method was used to optimize the structure parameters of two-stage resonator and spray test was carried out.The results showed that when the included angle between the two stage resonators was 80°,the diameter was 4.86 mm,the tube length ratio was 1.0 and the gas pressure was 0.5 MPa,the droplet size could reach 22.05μm.Additionally,compared with the traditional Hartmann cavity with 90°included angle,the droplet size was decreased by 63%.The annular electrode was used as the charging electrode,and Comsol Multiphysics software was used to simulate and calculate the deformation and crushing process of electrostatic droplets and the influence of different voltage,surface tension and droplet diameter on the droplet deformation rate.The results showed that:(1)the optimum charge range of the electrode ring was within 20 mm of the axial distance along the electrode ring.(2)The higher the voltage U,the smaller the surface tensionσ;the larger the droplet diameter d and the larger the droplet deformation rate.(3)The experimental results showed that the droplet size was inversely proportional to the gas pressure P0,electrostatic voltage U and spray height h.When the gas pressure and electrostatic voltage were 0.4 MPa and 18 kV,0.4 MPa and 18 kV,respectively,the droplet sizes were 7.8μm and 43.9μm respectively,the droplet size difference between the two conditions was 82.2%. | Jianmin Gao Ke Xu Rui He Xiangchao Chen Mazhar Hussain Tunio | 2022 | International Journal of Agricultural and Biological Engineering2022，15，4： | 0 |
| 8 | Cylindrical vector beam revealing multipolar nonlinear scattering for superlocalization of silicon nanostructures显示文摘The resonant optical excitation of dielectric nanostructures offers unique opportunities for developing remarkable nanophotonic devices.Light that is structured by tailoring the vectorial characteristics of the light beam provides an additional degree of freedom in achieving flexible control of multipolar resonances at the nanoscale.Here,we investigate the nonlinear scattering of subwavelength silicon(Si)nanostructures with radially and azimuthally polarized cylindrical vector beams to show a strong dependence of the photothermal nonlinearity on the polarization state of the applied light.The resonant magnetic dipole,selectively excited by an azimuthally polarized beam,enables enhanced photothermal nonlinearity,thereby inducing large scattering saturation.In contrast,radially polarized beam illumination shows no observable nonlinearity owing to off-resonance excitation.Numerical analysis reveals a difference of more than 2 orders of magnitude in photothermal nonlinearity under two types of polarization excitations.Nonlinear scattering and the unique doughnut-shaped focal spot generated by the azimuthally polarized beam are demonstrated as enabling far-field high-resolution localization of nanostructured Si with an accuracy approaching 50 nm.Our study extends the horizons of active Si photonics and holds great potential for label-free superresolution imaging of Si nanostructures. | BIN WANG YING CHE XIANGCHAO ZHONG WEN YAN TIANYUE ZHANG KAI CHEN YI XU XIAOXUAN XU XIANGPING LI | 2021 | Photonics Research2021，9，6： | 0 |
| 9 | Metal-ligand cooperative iridium complex catalyzed C-alkylation of oxindole and 1,3-dimethylbarbituric acid using alcohols显示文摘A general and high-efficiency C-alkylation of oxindoles and barbituric acids has been developed by a Cp*Ir complex[Cp*Ir(2,20-bpyO)(OH)]Na with a bipyridine-based functional ligand.In particular,H_(2)O was selected as the solvent instead of the organic solvent in this catalytic system.Through mild reaction conditions gave a variety of corresponding alkylated heterocyclic compounds with good to excellent yields.More importantly,the gramscale C-alkylation reaction was successfully carried out with good yield using a common route with only a single purification by column chromatography. | Ao Song Yunbo Liu Xuan Jin Dianrun Su Zhaopeng Li Shengsheng Yu Lingbao Xing Xiangchao Xu Rongzhou Wang Feng Li | 2023 | Green Synthesis and Catalysis2023，4，3： | 0 |
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