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Characteristics and Origins of Suspended Pyrite in the Mixing Zone of the Yangtze Estuary

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Journal of Ocean University of China 2020年第4期19卷 801-810页

作者： pang yue FAN Dejiang SUN Xiaoxia SUN Xueshi LIU Ming YANG Zuosheng Key Laboratory of Submarine Geosciences and Prospecting Techniques Ministry of EducationOcean University of ChinaQingdao 266100China Laboratory for Marine Geology Qingdao National Laboratory for Marine Science and Technology(QNLM)Qingdao 266061China Center for Isotope Geochemistry and Geochronology Qingdao National Laboratory for Marine Science and Technology(QNLM)Qingdao 266061China

For a long time,most studies about pyrite have focused on sediments while only a few have focused on pyrite in water.In this study,a method that combines the scanning electron microscopy(SEM)and the energy dispersive X-ray spectrometry(EDS)was used to compare pyrite particles suspended in water to those in associated bottom sediments,both obtained from the mixing zone of the Yangtze Estuary.It was found that the pyrite particles in the two media have similar morphologies and size distributions.The particle morphology mainly includes two types,single crystal and aggregate,and the particle size mainly ranges from 0.5 to 2μm.The pyrite particles in water exhibit an increase in relative content towards the sea,and their transport and deposit processes are mainly affected by hydrodynamic conditions.It is concluded that the pyrite particles in the suspended matter mainly derived from the resuspension of sediments,which are products of the early diagenesis.Precursor minerals may appear during the formation of pyrite,but are generally restricted by the diagenetic environment and local microenvironment.

关键词： Yangtze Estuary suspended matter pyrite resuspension authigenic mineral

重庆水电流域夏季降水模态分析及其水汽输送特征

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高原气象 2024年第2期43卷 421-433页

作者：刘祥何军庞玥孔德璇夏佰成中国气象局气候资源经济转化重点开放实验室重庆市气象服务中心重庆401147 中国气象局气候资源经济转化重点开放实验室重庆市气象台重庆401147 贵州省黔西南布依族苗族自治州气象局贵州兴义562400

水电是重庆重要的产电形式之一,研究重庆水电流域夏季降水的强弱和分布对做好夏季电力气象保障服务具有重要意义,目前的研究主要聚焦于西南地区或四川盆地,较少以水电流域为单位进行研究,对做好精细化的电力气象服务参考作用有限。本文... 详细信息

水电是重庆重要的产电形式之一,研究重庆水电流域夏季降水的强弱和分布对做好夏季电力气象保障服务具有重要意义,目前的研究主要聚焦于西南地区或四川盆地,较少以水电流域为单位进行研究,对做好精细化的电力气象服务参考作用有限。本文利用1981-2022年重庆水电流域115个气象观测站点降水数据、ERA5再分析资料,通过EOF分析、回归分析、合成分析等方法,对重庆水电流域夏季降水模态和成因进行了分析,并进一步探究了各模态水汽输送特征。结果表明:重庆水电流域夏季降水主要有全区一致型和南北反向型两个模态,全区一致型中一致偏多型环流特征主要表现为中高纬高度场波动振幅较大,中纬度西风急流偏强、偏南,中低纬南亚高压偏强、偏南,西太平洋副热带高压偏西,同时流域内配合有异常的西南水汽输送和水汽辐合,一致偏少型则与之相反,此外,影响全区一致型的水汽通道共有4条,分别为孟加拉湾西部南风通道、中南半岛北部的南风通道、高原东侧的西风通道、菲律宾以西的东风通道,其中以菲律宾以西的东风通道影响最为显著;南北反向型中北多南少型环流特征主要表现为中高纬高度场西高东低,中纬度西风急流偏北,中低纬南亚高压表现为东部型,西太平洋副热带高压容易西伸、北跳,同时流域内配合有较强的向北输送的水汽通量,且北部有水汽辐合、南部有水汽辐散,南多北少型则与之相反,此外,影响南北反向型的水汽通道共有2条,分别为流域中部南风通道和菲律宾东部南风通道,且二者表现出一致变化的特征。

关键词：水电流域降水模态水汽输送环流

Target-directed isolation and identification of a serum lectin from lamprey (Lampetra japonica) by chromatographys and MALDI-TOF/TOF

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Acta Oceanologica Sinica 2018年第5期37卷 113-116页

作者： HAN Yinglun GOU Meng SONG Xiaoping SONG Tao SHI Biyue pang yue LI Qingwei College of Life Science Liaoning Normal University Dalian 116029 China Lamprey Research Center Liaoning Normal University Dalian 116029 China Affiliated Zhongshan Hospital of Dalian University Dalian 116001 China

A 105-k Da polymer lectin was purified from lamprey（Lampetra japonica） serum by chromatography methods including cation ion-exchange chromatography with a SP-Sepharose TM XL column and size exclusion chromatography with a Superdex 200 column. The target fractions were collected according to the direction of hemagglutinating activity. The results revealed that the active fractions could adsorb on SP-Sepharose column and showed a 280 nm UV absorbance peak corresponding to molecular weights of 105 k Da in the following size exclusion chromatography. The target fractions with hemagglutinating activity were further checked by NativePAGE and SDS-PAGE. Two single bands at around 105 k Da and 35 k Da were displayed by two electrophoresis methods respectively, indicating that the protein exists as a trimer in solution. After Native-PAGE and SDS-PAGE,two bands were excised from the gels respectively and further identified by MALDI-TOF/TOF as serum lectin（gi：13094239）. The lectin was able to agglutinate rabbit red blood cells（RRBCs） and sheep red blood cells（SRBCs） in vitro. The lectin isolated from lamprey serum in the current study might be helpful for deeply understanding the innate immune molecules dependent immune defence in jawless vertebrates which have been proved recently that they possess a lymphocyte-based system of anticipatory immunity with variable lymphocyte receptors as mediators.

关键词： Lampetra japonica lectin purification identification MALDI-TOF/TOF

Experimental and DFT Studies of Au Deposition Over WO_(3)/g-C_(3)N_(4) Z-Scheme Heterojunction

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Nano-Micro Letters 2020年第1期12卷 75-92页

作者： Muhammad Humayun Habib Ullah Junhao Cao Wenbo Pi Yang Yuan Sher Ali Asif Ali Tahir pang yue Abbas Khan Zhiping Zheng Qiuyun Fu Wei Luo Engineering Research Center for Functional Ceramics of the Ministry of Education School of Optical and Electronic InformationHuazhong University of Science and TechnologyWuhan 430074People’s Republic of China China‑EU Institute for Clean and Renewable Energy Huazhong University of Science and TechnologyWuhan 430074People’s Republic of China Environment and Sustainability Institute(ESI) University of ExeterPenryn CampusPenrynCornwall TR109FEUK College of Engineering and Applied Sciences Nanjing UniversityNanjing 210093People’s Republic of China Department of Chemistry Abdul Wali Khan UniversityMardanKhyber Pakhtunkhwa 23200Pakistan

A typical Z-scheme system is composed of two photocatalysts which generate two sets of charge carriers and split water into H2 and O2 at different locations.Scientists are struggling to enhance the efficiencies of these systems by maximizing their light absorption,engineering more stable redox couples,and discovering new O2 and H2 evolutions co-catalysts.In this work,Au decorated WO3/g-C3N4 Z-scheme nanocomposites are fabricated via wet-chemical and photo-deposition methods.The nanocomposites are utilized in photocatalysis for H2 production and 2,4-dichlorophenol(2,4-DCP)degradation.It is investigated that the optimized 4Au/6%WO3/CN nanocomposite is highly efficient for production of 69.9 and 307.3μmol h−1 g−1 H2 gas,respectively,under visible-light(λ>420 nm)and UV–visible illumination.Further,the fabricated 4Au/6%WO3/CN nanocomposite is significant(i.e.,100%degradation in 2 h)for 2,4-DCP degradation under visible light and highly stable in photocatalysis.A significant 4.17%quantum efficiency is recorded for H2 production at wavelength 420 nm.This enhanced performance is attributed to the improved charge separation and the surface plasmon resonance effect of Au nanoparticles.Solid-state density functional theory simulations are performed to countercheck and validate our experimental data.Positive surface formation energy,high charge transfer,and strong non-bonding interaction via electrostatic forces confirm the stability of 4Au/6%WO3/CN interface.

关键词： Polymeric g-C_(3)N_(4) Plasmonic Au Charge separation Solar H_(2) production DFT calculations

Molecular cloning,expression pattern and phylogenetic analysis of Guanine nucleotide exchange factor Vav2 in lamprey,Lampetra japonica

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Acta Oceanologica Sinica 2017年第12期36卷 24-30页

作者： HAN Yinglun LI Jun XU Lei MA Qinghua GOU Meng pang yue LIU Xin LI Qingwei College of Life Science Liaoning Normal UniversityDalian 116029China Lamprey Research Center Liaoning Normal UniversityDalian 116029China Freshwater Fisheries Sciences Institute of Liaoning Province Liaoyang 111000China

The Guanine nucleotide exchange factor Vav2（Vav2） is a member of the Vav family that serves as an important regulators for the Rho family of Ras-related GTPases. In the current study, an ortholog（Lj-Vav2） of Vav2 was identified in the lamprey（Lampetra japonica）. To elucidate the phylogenetic relationship of Vav2, the metazoan genome databases were analyzed to mine the ortholog of Vav. It was found that Vav2 genes were only existed in vertebrates and Lj-Vav2 was the original one found in agnathans. The evolutionary dynamics of conserved motifs of Vav2 were explored using combined amino acid sequence as markers, and it is revealed that the Calponin homology（CH） domain, Dbl-homologous（DH） domain, Pleckstrin homology（PH） domain, Cysteine-rich（C1）domains, Src homology 3（SH3） domains and Src homology 2（SH2） domain were conserved throughout the Vav2 gene family in vertebrates during gene evolution. Relative quantitative real-time PCR analysis showed that the LjVav2 was distributed in the heart, kidney, supraneural myeloid body, liver, gill and lymphocyte-like cells. The LjVav2 was found to be expressed in these tissues, and the level of which was upregulated in lymphocyte-like cells after the animal was stimulated with LPS. These results indicated that the Lj-Vav2 might be involved in the immune response of lymphocyte-like cells in lamprey. Meanwhile, our findings provided a foundation for further investigation of the function of Lj-Vav2 in the primary vertebrate.

关键词： guanine nucleotide exchange factor Vav2 Lampetra japonica phylogenetic relationship molecular cloning

职业教育数字化传承中华优秀传统文化的策略——基于教学评一体化背景

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吉林省教育学院学报 2024年第4期40卷 24-28页

作者：姚雪红庞月吉林省教育学院长春市文庙博物馆

数字赋能中华优秀传统文化，重塑传统文化传承与保存模式，重构了传统文化传承路径，创新了传统文化的传播渠道。与此同时，教学评一体化的理念日益受到重视，并成为推动教育改革的重要方向，对职业教育产生了深远的影响。为此，需通过... 详细信息

数字赋能中华优秀传统文化，重塑传统文化传承与保存模式，重构了传统文化传承路径，创新了传统文化的传播渠道。与此同时，教学评一体化的理念日益受到重视，并成为推动教育改革的重要方向，对职业教育产生了深远的影响。为此，需通过数字化手段，完善传承和弘扬传统文化的机制，创新传统文化的教学方法，加强教师队伍建设，使学生在职业发展的同时拥有对传统文化的深入理解和传承，为培养应用型高层次技术技能人才奠定坚实基础。

关键词：数字化传统文化传承职业教育

来源：博看期刊

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基于混合次分数跳过程的亚式期权模糊定价

兰州文理学院学报（自然科学版） 2024年第1期38卷 9-16页

作者：庞秋月汪育兵兰州财经大学统计与数据科学学院甘肃兰州730020

考虑到金融资产价格的长记忆性及跳跃现象,基于混合次分数布朗运动和泊松过程,建立了几何亚式期权定价模型;进一步考虑金融市场模糊性,引入模糊理论得到模糊定价模型.首先,得到混合次分数跳过程Ito∧公式及其股价所满足随机微分方程的... 详细信息

考虑到金融资产价格的长记忆性及跳跃现象,基于混合次分数布朗运动和泊松过程,建立了几何亚式期权定价模型;进一步考虑金融市场模糊性,引入模糊理论得到模糊定价模型.首先,得到混合次分数跳过程Ito∧公式及其股价所满足随机微分方程的解析解;其次,运用风险中性原理给出几何亚式期权的定价公式;然后,运用模糊理论构建了几何亚式模糊期权定价模型;最后,数值模拟分析了置信度和Hurst指数对模糊价格的影响,并将本文所建立模型与经典BS模型进行对比.结果表明,在相应的置信度下模糊定价模型能够给出较为合理的价格区间,有助于金融投资者的决策,从而验证了模型的合理性和实用性.

关键词：混合次分数跳过程风险中性原理几何亚式期权模糊理论

Compositional evolution for mixed aerosols containing gluconic acid and typical nitrate and the effect of multiply factors on hygroscopicity

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Journal of Environmental Sciences 2024年第5期139卷 206-216页

作者： yue Zhu Shufeng pang Yunhong Zhang School of Chemistry and Chemical Engineering Beijing Institute of TechnologyBeijing 100081China

The aging process of atmospheric aerosols usually leads to a mixture of inorganic salts and organic compounds of anthropogenic origin.In organic compounds,polyhydroxy organic acids are important components,however,the study on composition and hygroscopic properties of the mixture containing inorganics and polyhydroxy organic acids is scanty.In this study,gluconic acid,the proxy of polyhydroxy organic acids,is mixed with the representative nitrate(Mg(NO_(3))_(2),Ca(NO_(3))_(2))to form aerosols.ATR-FTIR and optical microscopy are employed to study the component changes and hygroscopicity as a function of relative humidity.As relative humidity fluctuates,the FTIR-ATR spectra display that the internal mixed gluconic acid(CH_(2)(CH)_(4)(OH)_(5)COOH)and nitrate can react to release acidic gases,forming relevant gluconate and further affecting the hygroscopicity.The specific presentation is particles cannot be recovered to their original size after the dehydration-hydration process and there will be some disparities in GF for mixed particles.For the gluconic acid-Ca(NO_(3))_(2)/Mg(NO_(3))_(2)mixtures with molar ratios of 1:1,higher degree of reaction resulting in the production of large amounts of gluconate should be responsible to the lower hygroscopicity compared to ZSR model.For 1:2 gluconic acid-nitrate mixed systems(with higher nitrate content),the hygroscopicity of mixtures are higher than the ZSR prediction.A possible reason could be‘salt-promoting effect’on the organic fractions of the surplus inorganic salt in the mixture.These data can improve the chemical composition list evaluation,in turn hygroscopic properties and phase state of atmospheric aerosol,and then the climate effect.

关键词： Hygroscopicity Gluconic acid Reaction ZSR simulation Size growth factors

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高校实验室建设的“新基建”改革实践研究

大学（研究与管理） 2024年第5期 10-13页

作者：杨杰任贺贺庞悦南京航空航天大学基建处江苏南京210016 南京航空航天大学土木与机场工程系江苏南京210016

为探讨“新基建”背景下高校智慧实验室建设改革的可行性与前瞻性,文章系统剖析了高校实验室建设工作面临的问题,讨论了传统基建弊端与“新基建”实验室建设趋势。在此基础上,依托南京航空航天大学将军路校区新建工程,其创新建设了实验... 详细信息

为探讨“新基建”背景下高校智慧实验室建设改革的可行性与前瞻性,文章系统剖析了高校实验室建设工作面临的问题,讨论了传统基建弊端与“新基建”实验室建设趋势。在此基础上,依托南京航空航天大学将军路校区新建工程,其创新建设了实验室开放预约和安全管理系统、信息一体化实验室数据平台和虚拟仿真实验教学共享平台一体化嵌套的高校智慧实验室,提出了“新旧基建结合”的实验室建设改革方案,为高校实验室建设提供了案例参考。

关键词：新基建高校实验室建设智慧实验室