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Selective chemical degradation of kerogen from Nenjiang Formation of the southern Songliao Basin

Science China Earth Sciences 2007年第10期50卷 1504-1509页

作者： XIONG yongqiang wang YongQuan wang YanMei State Key Laboratory of Organic Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640China State Key Laboratory of Organic Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640China State Key Laboratory of Organic Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640China

A sequential selective chemical degradation has been performed on the kerogen from the Nenjiang Formation of the southern Songliao Basin by using a series of mild chemical degradations (alkaline hydrolysis, cleavage of ether-bonds and sulfur-bonds, and ruthenium tetroxide (RuO4) oxidation). Subsequently, the GC-MS analyses are carried out on different degradation products. The results show that chemical degradations can release a great number of GC/MS-determinable biomarkers from insoluble kerogen, such as, alkaline hydrolysis products mainly comprise n-alkanes, fatty acids and alkanols; thiophene compounds are predominantly ether-bound to kerogen matrix; the products from the cleavage of sulfur-sulfur and sulfur-carbon bonds in the kerogen include fatty acids, alkanols and some n-alkanes with high carbon numbers; RuO4 oxidation products are predominantly monocarboxylic acids and α,ω-dicarboxylic acids. The distributions of main degradation products indicate that organic matter in this kerogen is predominantly derived from algae and bacteria, and that small amounts of high plant-derived organic matter are possibly combined into kerogen matrix at the late stage by sulfur bonds and other means. This study will provide an important approach for further discussing sources of organic matter in source rocks and their depositional paleoenvironments.

关键词： kerogen, selective chemical degradation, biomarker, Songliao basin

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Effect of calcination process on performance of 3DOM CeMnO3 catalysts

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Journal of Rare Earths 2021年第9期39卷 1073-1081页

作者： Xin Liu Xinyi Lv yongqiang wang Chaocheng Zhao Fang Liu College of Chemical Engineering China University of Petroleum(East China)Qingdao 266580China State Key Laboratory of Petroleum Pollution Control China University of Petroleum(East China)Qingdao 266580China

A series of 3DOM CeMnO3 perovskite catalysts were prepared by poly(methyl methacrylate)hardtemplating-excessive impregnation method at calcination temperature of x℃(x=600,700,800)and the heating rate of y℃/min(y=1,2,5,10).The samples were characterized by Brunauer-Emmett-Teller method,scanning electron microscopy,transmission electron microscopy,H2-temperature programmed reduction,X-ray photoelectron spectroscopy,X-ray diffraction,moreover,the effect of the calcination process on the catalytic activity of the samples were discussed by the catalytic combustion of *** results show that the 3DOM CeMnO3 catalysts calcined at 600℃promote the formation of a perovskite structure,inhibit the reduction of the Mn4+species in the catalyst with high *** catalyst expresses the complete macroporous structure,large specific surface area(38.8 m^(2)/g),higher adsorption oxygen concentration and Mn4+substance concentration,with a low T90%=172℃.By preparing the catalysts at different calcination heating rates,it can be concluded that the catalyst possesses a high concentration of adsorbed oxygen and a low reduction temperature and a large specific surface area(40.42 m^(2)/g)greatly promotes adsorption stage catalytic oxidation reaction and catalytic combustion of toluene at low temperature under the heating rate of 5℃/*** the heating rate is 1℃/min,the catalyst has a complete macroporous structure(>250 nm),which is beneficial to the exchange of macromolecular substances during the catalytic reaction and the catalyst has a high concentration of lattice oxygen suitable for the catalysis of toluene in high temperature flue gas combustion.

关键词： Three-dimensionally ordered macroporous Perovskite catalyst Calcination temperature Calcination heating rate Rare earths

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Cuproptosis:a new v form of programmed cell death

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Cellular & Molecular Immunology 2022年第8期19卷 867-868页

作者： yongqiang wang Long Zhang Fangfang Zhou Institutes of Biology and Medical Science Soochow UniversitySuzhou 215123China MOE Laboratory of Biosystems Homeostasis and Protection and Innovation Center for Cell Signaling Network Life Sciences InstituteZhejiang UniversityHangzhou 310058China

A recent study by Tsvetkov et *** published in Science and proposed a novel form of copper-induced cell *** et *** that excess intracellular copper induces the aggregation of lipoylated dihydrolipoamide S-acetyltransferase(DLAT),which is associated with the mitochondrial tricarboxylic acid(TCA)cycle,resulting in proteotoxic stress and leading to a novel form of cell death termed cuproptosis[1].

关键词： copper aggregation excess

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Superhydrophobic Surfaces Produced by Applying a Self- Assembled Monolayer to Silicon Micro/Nano-Textured Surfaces

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Nano Research 2009年第2期2卷 143-150页

作者： Yong Song Rahul Premachandran Nair Min Zou yongqiang wang Department of Mechanical Engineering University of ArkansasFayettevilleAR 72701USA Ocean NanoTech LLC.2143 Worth LaneSpringdaleAR 72764USA

A novel way of producing superhydrophobic surfaces by applying a self-assembled monolayer(SAM)to silicon micro/nano-textured surfaces is presented in this *** micro/nano-textured surfaces on silicon substrates were generated by the aluminum-induced crystallization(AIC)of amorphous silicon(a-Si)***(OTS)SAMs were then applied to the textured surfaces by dip *** topography and wetting properties of the resulting surfaces were characterized using scanning electron microscopy(SEM)and a video-based contact angle measurement *** results show that by introducing OTS SAMs on the silicon micro/nano-textured surfaces,superhydrophobic surfaces with water contact angles(WCAs)of 155°were obtained,as compared to the WCAs of OTS-modified smooth silicon surfaces of about 112°.Surface topography was found to directly influence the WCA as predicted by the Cassie-Baxter model.

关键词： Superhydrophobic wetting property micro/nano-textured surfaces octadecyltrichlorosilane self-assembled monolayer aluminum-induced crystallization of amorphous silicon

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Velocity profile of turbulent sediment-laden flows in open-channels

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International Journal of Sediment Research 2015年第04期30卷 285-296页

作者： Deyu Zhong Lei Zhang Baosheng Wu yongqiang wang State Key Laboratory of Hydroscience and Engineering Tsinghua Univ.

In this paper,a study was carried out on the velocity profile of sediment-laden flows in open channels using a two-phase mixture model for two-phase *** governing equations for water-sediment mixtures were derived based on the two-fluid equations for solid-liquid two-phase *** drift velocity,a key variable involved in the two-phase mixture equations,was derived from the equation of momentum conservation for the solid *** drift velocity shows that the inertia of flow,particle turbulence,and collisions effect contribute to the dispersion of the sediment particles in turbulent *** the two-phase mixture equation,the vertical velocity profile of open channel flows was *** analysis indicated that the distribution of the velocity over depth of water-sediment mixtures,composed of two different phases,is significantly affected by the turbulence of water-sediment mixtures and the density ***,the velocity distribution is also affected by other factors including collisions between particles and particle turbulence as a basic feature of two-phase flows where interphase interactions inevitably mark their influence on the velocity *** of this approach with observations for a wide range of experimental conditions are presented in this paper,which show that this approach agrees well with the experiments.

关键词： Velocity profile Sediment-laden flows Turbulence Open-channels

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Enhanced activity of ZnS(111) by N/Cu co-doping:Accelerated degradation of organic pollutants under visible light

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Journal of Environmental Sciences 2023年第3期125卷 244-257页

作者： Guofei Jiang Benjie Zhu Junzhi Sun Fang Liu yongqiang wang Chaocheng Zhao College of Chemical Engineering China University of PetroleumQingdao 266580China State Key Laboratory of Petroleum Pollution Control Beijing 102206China State Key Laboratory of Heavy Oil Processing China University of PetroleumQingdao 266580China

High-efficiency photocatalysts are of great significance for the application of photocatalytic technology in water *** this study,N/Cu co-doped ZnS nanosphere photocatalys(N/Cu-ZnS) is synthesized by a hydrothermal method for the first *** doping,the tex ture of nanosphere becomes loose,the nanometer diameter is reduced,making the specific surface area of catalyst increased from 34.73 to 101.59 m^(2)/*** characterization results show that more ZnS (111) crystal planes are exposed by N/Cu co-doping;the calculations of density functional theory show that N/Cu co-doping can increase the catalytic activity of the ZnS (111) crystal plane,enhance the adsorption capacity of (111) crystal plane to O_(2)and promote the generation of·O_(2)-.The energy levels of the introduced impurities can be hybridized with the energy levels of S and Zn at the top of valence band and the bottom o conduction band,which makes the band gap narrower,thus enhancing the absorption o visible *** with pure ZnS,the degradation rates of 2,4-dichlorophenol (2,4-DCP and tetracycline (TC) by N/Cu-ZnS under visible light (>420 nm) are increased by 83.7 and51 times,*** this research,a promising photocatalyst for photocatalytic degra dation of organic pollutants in wastewater is provided.

关键词： Catalytic degradation of visible light N/Cu co-doping ZnS(111) 2,4-Dichlorophenol Tetracycline

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Geochronology,Geochemistry and Petrogenesis of the Bangbule Quartz Porphyry:Implications for Metallogenesis

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Acta Geologica Sinica(English Edition) 2023年第3期97卷 744-758页

作者： HE Chuankai wang Yong wang Haiyong TANG Juxing YAN Penggang wang yongqiang FU Xuelian FENG Yipeng College of Earth Sciences Chengdu University of TechnologyChengdu 610059China MNR Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesCAGSBeijing 100037China No.6 Geological Party Tibet Bureau of Geology and Mineral Exploration and DevelopmentLhasa 851400China School of Earth Sciences and Resources China University of GeosciencesBeijing 100083China

The Bangbule skarn lead-zinc(Pb-Zn)deposit(>1 Mt Zn+Pb)is located in the western Nyainqentanglha polymetallic metallogenetic belt,central *** orebodies are all hosted in skarn and developed in the contact zone between the quartz porphyry and carbonate strata of the mid Paleozoic Middle to Upper Chaguoluoma Formation as well as in carbonate and sandstone beds of the Upper Paleozoic Laga *** a newly discovered skarn deposit,the geological background and metallogenesis of this deposit remain poorly *** petrological,geochemical and geochronological data of the ore-related quartz porphyry,helps constrain the mineralization age and contributes to discussion on the ore genesis of the Bangbule *** endoskarn and exoskarn are identified in the Bangbule *** quartz porphyry to carbonate formation,the exoskarn is zoned from proximal garnet skarn to distal pyroxene *** U-Pb dating results show that the quartz porphyry formed at 73.9±0.8 *** analysis results show that the quartz porphyry has high contents of SiO_(2)(71.40–74.94 wt%)and K_(2)O+Na_(2)O(3.76–8.46 wt%)with A/CNK values of 0.69 to ***,the quartz porphyry is enriched in large ion lithophile elements(LILEs)and light rare earth elements(LREEs)and have lowεNd(t)(from-8.25 to-8.19)and high initial(^(87)Sr/^(86)Sr)i values(0.713611–0.714478).Major,trace elements and whole-rock F concentration analysis results from the endoskarn samples show higher TFe_(2)O_(3),MgO,CaO,Pb+Zn,W,Sn,Mo and F etc.,and lower alkalis(K_(2)O,Na_(2)O,Sr and Ba)than those of fresh quartz porphyry,indicating that the early ore-forming fluids were an Ca-Fe-F-enriched *** ore in the proximal skarn might be related to the high F content in the magma,which lowered the solidus temperature of the quartz porphyry magma and caused a lower temperature of the ore-forming fluids,as well as facilitating the precipitation of sphalerite and *** on the geochemical

关键词： petrogenesis quartz porphyry metallogenesis Bangbule skarn deposit Tibet

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The role of O-GlcNAcylation in innate immunity and inflammation

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Journal of Molecular Cell Biology 2022年第9期14卷 14-25页

作者： yongqiang wang Xiuwu Fang Shuai wang Bin wang Feng Chu Zhixin Tian Long Zhang Fangfang Zhou Institutes of Biology and Medical Science Soochow UniversitySuzhou 215123China MOE Laboratory of Biosystems Homeostasis and Protection and Innovation Centerfor Cell Signaling Network Life Sciences InstituteZhejiang UniversityHangzhou 310058China

O-linkedβ-N-acetylglucosaminylation(O-GlcNAcylation)is a highly dynamic and widespread post-translational modification(PTM)that regulates the activity,subcellular localization,and stability of target proteins.O-GlcNAcylation is a reversible PTM controlled by two cycling enzymes:O-linked N-acetylglucosamine transferase and *** evidence indicates that O-GlcNAcylation plays critical roles in innate immunity,inflammatory signaling,and cancer development.O-GlcNAcylation usually occurs on serine/threonine residues,where it interacts with other PTMs,such as ***,it likely has a broad regulatory *** review discusses the recent research advances regarding the regulatory roles of O-GlcNAcylation in innate immunity and inflammation.A more comprehensive understanding ofO-GlcNAcylation could help to optimize therapeutic strategies regarding inflammatory diseases and cancer.

关键词： innate immunity inflammation O-GlcNAcylation cancer

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Microstructure Selection in Ton Class Ingot of Al₁₇Cr₁₀Fe₃₃Ni₃₆Mo₂Ti₂ Eutectic High Entropy Alloy

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ACTA METALLURGICA SINICA-ENGLISH LETTERS 2024年第12期37卷 2008-2018页

作者： Shi, Xinbo Qiu, Yunji Bai, Xiaoyu Chen, Yiming wang, yongqiang Xu, Tao wang, Jincheng Li, Junjie wang, Zhijun Northwestern Polytech Univ State Key Lab Solidificat Proc Xian 710072 Peoples R China Xian Superalloy Technol Co Ltd Xian 710299 Peoples R China Anhui Fukai Special Mat Co Ltd Xuancheng 245300 Peoples R China

The eutectic high entropy alloys have attracted extensive attention and are considered one of the most promising new metal materials. The microstructures of large eutectic high entropy alloy ingot with excellent casting performance have been rarely reported. In this study, we have prepared a ton class eutectic high entropy alloy ingot via vacuum induction melting for the first time. The evolution of microstructure and macro-segregation from the edge region to the core of the ingot were also revealed. It was found that there was no significant macro-segregation in ton class eutectic high entropy alloy ingot, and chemical elements were distributed uniformly. The coupled growth of the primary phases and eutectic colonies were homogeneously distributed in the ingot, and there is no traditional columnar grain region from the edge region of the ingot to the core. The tensile strength of the sample in the R/2 region of the ton class ingot with elongation greater than 10% is 892.3 MPa, showing an excellent comprehensive mechanical property. This study exhibits an important guidance for the industrial application of large eutectic high entropy alloy casting ingot.

关键词： Eutectic high entropy alloy Ton class ingot Segregation Microstructure Mechanical properties

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Alterations in microbiota of patients with COVID-19:potential mechanisms and therapeutic interventions

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Signal Transduction and Targeted Therapy 2022年第5期7卷 1597-1611页

作者： Bin wang Lei Zhang yongqiang wang Tong Dai Ziran Qin Fangfang Zhou Long Zhang MOE Laboratory of Biosystems Homeostasis&Protection and Innovation Center for Cell Signaling Network Life Sciences InstituteZhejiang University310058 HangzhouPR China Department of Orthopaedic Surgery The First Affiliated Hospital of Wenzhou Medical University325000 WenzhouPR China Institutes of Biology and Medical Science Soochow University325200 SuzhouPR China

The global coronavirus disease 2019(COVID-19)pandemic is currently *** is caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).A high proportion of COVID-19 patients exhibit gastrointestinal manifestations such as diarrhea,nausea,or ***,the respiratory and gastrointestinal tracts are the primary habitats of human microbiota and targets for SARS-CoV-2 infection as they express angiotensin-converting enzyme-2(ACE2)and transmembrane protease serine 2(TMPRSS2)at high *** is accumulating evidence that the microbiota are significantly altered in patients with COVID-19 and post-acute COVID-19 syndrome(PACS).

关键词： patients acute respiratory

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