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Journal of Environmental Sciences 2008年第1期20卷 88-93页

作者： DING Juan cong jun ZHOU juan GAO Shixiang State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing 210093 China School of the Energy and Environment Southeast University Nanjing 210096 China

The extracellular enzyme secretion and biodegradation of polycyclic aromatic hydrocarbons （PAHs） were studied in agitated and shallow stationary liquid cultures of Phanerochaete chrysosporium. Veratryl alcohol and Tween80 were added to cultures as lignin peroxidase （LIP） and manganese peroxidase （MnP） inducer, respectively. Shallow stationary cultures were suitable for the production of enzyme, whereas agitated cultures enhanced overall biodegradation by facilitating interphase mass transfer of PAHs into aqueous phases. The use of a LiP stimulator, veratryl alcohol, did not increase PAH degradation but significantly enhanced LiP activity. In contrast, Tween80 increased both MnP secretion and PAH degradation in shallow stationary cultures. On the other hand, high PAH degradation was observed in agitated cultures in the absence of detectable LiP and MnP activities. The results suggested that extracellular peroxidase activities are not directly related to the PAH degradation, and the increased solubility rather than enzyme activity may be more important in the promotion of PAH degradation.

关键词： lignin peroxidase (LIP) manganese peroxidase (MnP) Phanerochaete chrysosporium polycyclic aromatic hydrocarbons (PAHs) solubilization

Unconventional Bose–Einstein Condensations from Spin-Orbit Coupling

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Chinese Physics Letters 2011年第9期28卷 217-220页

作者： WU cong-jun Ian Mondragon-Shem ZHOU Xiang-Fa Department of Physics University of CaliforniaSan DiegoCA 92093 Instituto de Física Universidad de AntioquiaAA 1226MedellínColombia Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026

According to the"no-node"theorem,the many-body ground state wavefunctions of conventional Bose–Einstein condensations(BEC)are positive-definite,thus time-reversal symmetry cannot be spontaneously *** find that multi-component bosons with spin-orbit coupling provide an unconventional type of BECs beyond this *** focus on a subtle case of isotropic Rashba spin-orbit coupling and the spin-independent *** the limit of the weak confining potential,the condensate wavefunctions are frustrated at the Hartree–Fock level due to the degeneracy of the Rashba *** zero-point energy selects the spin-spiral type condensate through the"order-from-disorder"*** a strong harmonic confining trap,the condensate spontaneously generates a half-quantum vortex combined with the skyrmion type of spin *** both cases,time-reversal symmetry is spontaneously *** phenomena can be realized in both cold atom systems with artificial spin-orbit couplings generated from atom-laser interactions and exciton condensates in semi-conductor systems.

关键词： interaction mechanism Einstein

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镁铝尖晶石纳米前驱体溶胶的制备及表征

华北理工大学学报（自然科学版） 2025年第1期47卷 1-6页

作者：席子建魏军从涂军波马伟平华北理工大学河北省无机非金属材料重点实验室河北唐山063210 河北国亮新材料有限公司河北唐山063009

以六水氯化镁和六水氯化铝为主要原料,氨水为沉淀剂,利用共沉淀法制备了镁铝尖晶石前驱体溶胶。测定了溶胶的固体含量、pH值和密度,对凝胶作用后的粉体进行了综合热分析,红外光谱分析、XRD和TEM。研究表明:使用共沉淀法制备的镁铝尖晶... 详细信息

以六水氯化镁和六水氯化铝为主要原料,氨水为沉淀剂,利用共沉淀法制备了镁铝尖晶石前驱体溶胶。测定了溶胶的固体含量、pH值和密度,对凝胶作用后的粉体进行了综合热分析,红外光谱分析、XRD和TEM。研究表明:使用共沉淀法制备的镁铝尖晶石前驱体溶胶胶粒为水滑石Mg_(2)Al(OH)_(7)和Al(OH)_(3)的无定型混合物,溶胶固体含量为5.8%,密度为1.21 g/cm^(3)。干凝胶粉受热时Mg_(2)Al(OH)_(7)和Al(OH)_(3)发生分解,500℃时开始形成镁铝尖晶石雏晶,700℃时镁铝尖晶石形成的粒径较小,约为15 nm。继续升高煅烧温度,镁铝尖晶石晶格趋于完善,平均晶粒尺寸增大。

关键词：镁铝尖晶石纳米前驱体溶胶共沉淀法纳米晶

Molecular Epidemiological Investigation of Infectious Hypodermal and Hematopoietic Necrosis Virus and Taura Syndrome Virus in Penaeus Vannamei Cultured in China

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中国病毒学 2007年第5期22卷 380-388页

作者： cong ZHANG jun-fa YUAN Zheng-li SHI State Key Laboratory of Virology Wuhan Institute of Virology Chinese Academy of Sciences Wuhan 43007I China

The Infectious hypodermal and hematopoietic necrosis virus(IHHNV) and Taura syndrome virus(TSV) are two important shrimp viruses in cultured shrimp in *** two viruses were transmitted to China at the beginning of the 21st *** this study,214 shrimp samples of Penaeus vannamei were collected from seven different areas of China and tested by PCR for IHHNV and TSV *** results showed that there were a high prevalence of IHHNV(65.42%) and low prevalence of TSV(3.27%) in the tested *** samples were found to be co-infected with these two viruses.A 3 kb fragment of 7 positive IHHNV samples and a structure protein region(ORF2) of three TSV positive samples were amplified and *** sequence comparison indicated that both IHHNV and TSV sequenced in China have a low genetic variations compared with the prototype IHHNV and TSV from *** analysis showed that TSV isolates were clustered into two groups,Asia and America group,which was genetically correlated to geographic distribution.

关键词：中国流行病学基因变异传染性皮下及造血组织坏死病毒桃拉综合征病毒南美白对虾

CFD SIMULATION OF 3D FLOW IN LARGE-BORE AXIAL-FLOW PUMP WITH HALF-ELBOW SUCTION SUMP

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Journal of Hydrodynamics 2006年第2期18卷 243-247页

作者： WANG Fu-jun LI Yao-jun cong Guo-hui WANG Wen-e WANG Hai-song College of Water Conservancy and Civil Engineering China Agricultural University Beijing 100083 China

Numerical simulations of 3D turbulent flow in a large-bore axial-flow pump coupled with half-elbow suction sump were perlbrmed by using CFD approach. The numerical model and velocity and pressure distributions in entire flow passage were presented. The obvious backflow in half-elbow suction sump and strong flow nonuniformity at suction sump outlet were observed, whereas these phenomena were not observed in existing studies performed for a separate suction sump by either experimental or numerical approach. This result indicates that the interaction between half-elbow suction sump and impeller has significant effect on the flow distribution in the pump passage. The change of pump efficiency caused by the interaction was discussed,

关键词： axial flow pump half elbow suction sump,CFD

Activation free energy of Zn(Ⅱ),Co(Ⅱ) binding to metallo-β-lactamase ImiS

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Chinese Chemical Letters 2014年第10期25卷 1323-1326页

作者： Xia Yang Ya-jun Zhou Pei He Yun-Hua Guo cong-jun Liu Ke-Wu Yang Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education College of Chemistry and Materials ScienceNorthwest University

In an effort to understand the recombination of a B2 metallo-β-lactamase（MβL）,the binding of metals to apo-ImiS was studied by isothermal titration calorimetry and fluorescence *** binding of Zn（Ⅱ）,Co（Ⅱ） to apo-lmiS resulted in activation free energies △G_≠~θ values of 93.719 and 92.948 kJ mol^（-1）,respectively,and increasing of fluorescence intensity at maxima emission of 340 nm.

关键词： Antibiotic resistant bacteria Metallo-β-lactamases Metalloprotein recombinant Thermokinetic parameters

Experimental Investigation on Vortex-Induced Vibration of Deep-Sea Risers of Different Excitation Water Depths

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China Ocean Engineering 2021年第2期35卷 215-227页

作者： LI Peng DONG Zheng-kai LIU Yu WANG Yu cong Ai-jun GUO Haiyan FU Qiang College of Civil Engineering and Architecture Shandong University of Science and TechnologyQingdao 266590China Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation Qingdao 266590China College of Engineering Ocean University of ChinaQingdao 266100China Yantai CIMC Raffles Ocean Engineering Co. Ltd.Yantai 264000China

The vortex-induced vibration test of the deep-sea riser was carried out with different excitation water depths in the wave-current combined water *** dimensionally changing the multi-stage water depth and hydrodynamic parameters such as outflow velocity at various water depths,the dynamic response parameters such as dominant frequency,dimensionless displacement and vibration trajectory evolution process of the riser under different excitation water depths were explored to reveal the sensitive characteristics of the dynamic response of vortexinduced vibration of the risers under different excitation water *** results show that different excitation water depths will change the additional mass of the riser and the fluid damping and other parameters,which will affect the spatial correlation and stability of the vortex shedding behind the *** the lock-in region,the distribution range of the characteristic frequency becomes narrow and centered on the lock-in *** increase of the excitation water depth gradually advances the starting point of the lock-in region of the riser,and at the same time promotes the excitation of the higher-order vibration frequency of the riser *** the dimensionless excitation water depth,the dominant frequency and dimensionless displacement are highly insensitive to the excitation water depth at high flow *** change of the excitation water depth will interfere with the correlation of the non-linear coupling of the ***“8-shaped”gradually becomes irregular,and the vibration trajectories of the riser show“O-shape”,“X-shape”and“Crescent-shape”.

关键词： deep-sea riser excitation water depth vortex-induced vibration(VIV) dynamic response coupling effect

The mystic role of high-entropy designs in rechargeable metal-ion batteries:A review

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Journal of Energy Chemistry 2024年第11期98卷 441-471页

作者： Yicheng Lin Shaohua Luo Wei Zhao Qi Sun jun cong Pengwei Li Pengyu Li Shengxue Yan School of Materials Science and Engineering Northeastern UniversityShenyang 110819LiaoningChina School of Resources and Materials Northeastern University at QinhuangdaoQinhuangdao 066004HebeiChina Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province Qinhuangdao 066004HebeiChina Department of Chemistry and Bioscience Aalborg University9220 AalborgDenmark

Rechargeable metal-ion batteries, such as lithium-ion batteries(LIBs) and sodium-ion batteries(SIBs),have raised more attention because of the large demand for energy storage solutions. Undoubtedly, electrode materials and electrolytes are key parts of batteries, exhibiting critical influence on the reversible capacity and span life of the metal-ion battery. Nonetheless, researchers commonly express concerns regarding the stability of both electrodes and electrolytes. Given its commendable stability attributes,high-entropy materials have garnered widespread acclaim and have been applied in many fields since their inception, notably in energy storage. However, while certain high-entropy designs have achieved substantial breakthroughs, some have failed to meet anticipated outcomes within the high energy density energy storage materials. Moreover, there is a lack of comprehensive summary research on the corresponding mechanisms and design principles of high-entropy designs. This review examines the current high-entropy designs for cathodes, anodes, and electrolytes, aiming to summarize the design principle,potential mechanisms, and electrochemical performance. We focus on their structural characteristics,interface characteristics, and prospective development trends. At last, we provide a fair evaluation along-side succinct development suggestions.

关键词： High-entropy materials Energy storage materials Electrodes Electrolytes Interface

Fabrication of 6FDA-HFBAPP Polyimide Asymmetric Hollow Fiber Membranes and Their CO2/CH4 Separation Properties

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Chinese Journal of Polymer Science 2019年第8期37卷 815-826页

作者： cong-jun Gan Xiao-Chen Xu Xue-Wei Jiang Feng Gan Jie Dong Xin Zhao Qing-Hua Zhang State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University

In this work, poly(amide acid) solution, the precursor of polyimide, was synthesized by the reaction of 4,4′-(hexafluoroisopropylidene)diphthalicanhydride and 2,2-bis[4-(4-aminophenoxy)phenyl]-hexafluoropropanane in the solvent of N-methyl-2-pyrrolidone(NMP) and tetrahydrofuran(THF). Then, hollow fiber membranes for high flux gas separation were prepared by dry-jet wet spinning using the precursor solution of poly(amide acid) as the spinning dope and a subsequent imidization process. Silicone rubber was further coated outside the obtained hollow fiber membranes to repair the defects on the denser layer. The effects of internal, external coagulation bath ratios with air gap, and coating solution concentrations on the morphologies, structures, and separation performance of the membranes were studied. Results showed that the sponge-like support layer was formed when the content of NMP was increased from 50% to 90% in the internal coagulation bath. The outer surface of the membrane became denser when the water content in the external coagulation bath increased from 40% to 100%, and the separation coefficient of CO2/CH4 increased by 2 times. This value could reach up to 1.4 when the air gap was 6 cm. With tuning the mass fraction of silicone rubber as 5%, hollow fiber composite membranes with uniform coating layer and an improved separation coefficient of 5.4 could be obtained.

关键词： Polyimide Gas separation Preparation conditions Membrane structure Permeability

Develope Monoclonal Antibody against Foot-and-mouth Disease Virus A Type

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Virologica Sinica 2011年第4期26卷 273-278页

作者： Tong Lin Jing Li jun-jun Shao Guo-zheng cong jun-zheng Du Shan-dian Gao Hui-yun Chang State Key Laboratory of Veterinary Etiological Biology National Foot and Mouth Disease Reference Laboratory Lanzhou Veterinary Research Institute Chinese Academy of Agricultural Sciences Lanzhou 730046 China

In order to develop an anti-FMDV A Type monoclonal antibody （mAb）, BABL/c mice were immunized with FMDV A type. Monoclonal antibodies （mAbs） 7B 11 and 8H4 against Foot-and-mouth disease virus （FMDV） serotype A were produced by fusing SP2/0 myeloma cells with splenocyte from the mouse immunized with A/AV88. The microneutralization titer of the mAbs 7Bll and 8H4 were 1024 and 512, respectively. Both mAbs contain kappa light chainS, the mAbs were IgG1. In order to define the mAbs binding epitopes, the reactivity of these mAbs against A Type FMDV, were examined using indirect ELISA, the result showed that both mAbs reacted with A Type FMDV. These mAbs may be used for further vaccine studies, diagnostic methods, prophylaxis, etiological and immunological research on FMDV. Characterization of these ncindicated that prepared anti-FMDV A mAbs had no cross-reactivity with Swine Vesicular Disease （SVD） or FMDV O, Asial and C Type antigens. Their titers in abdomen liquor were 1：5×10^6 and 1：2×10^6, respectively. 7B 11 was found to be of subtype IgGb 8H4 was classified as IgG2b subtype. The mAbs prepared in this study, are specific for detection of FMDV serotype A, and is potentially useful for pen-side diagnosis.

关键词： Foot-and-mouth disease virus (FMDV) A Type Monoclonal antibody (mAb) Neutralizing activity