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Late Quaternary Strata and Carbon Burial Records in the Yellow River Delta, China

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Journal of Ocean University of China 2015年第3期14卷 446-456页

作者： ZHAO Guangming YE Siyuan LI Guangxue DING Xigui yuan hongming College of Marine Geo-science Ocean University of China The Key Laboratory of Coastal Wetlands Biogeosciences China Geologic Survey The Key Laboratory of Marine Hydrocarbon Resource and Geology Ministry of Land and Resources

Sediment carbon sequestration plays an essential role in mitigating atmospheric CO2 increases and the subsequently global greenhouse effect. To clarify the late Quaternary strata and carbon burial records in YeUow River delta （YRD）, detailed analysis of benthic foraminifera, total carbon （TC）, organic carbon （Corg）, sedimentary characteristics and moisture contents of sediments, was performed on core ZK3, 30.3 m in length and obtained from YRD in 2007. Eight depositional units （designated U1-U8 in ascending order） were identified. A comprehensive analysis method of historical geography and sedimentary geology was used to de- termine the precise depositional ages of the modem Yellow River delta （MYRD）, from which pre-MYRD ages were deduced. The results indicates that the maximum burial rates of TC, inorganic carbon （IC） and Corg occurred in the delta front （U5）, and the mini- mum in the shallow sea （U3）. Remarkable high sedimentation rates in the MYRD are responsible for burial efficiency of carbon, with an average rate of Corg burial reaching 2087±251 g（m2yr）-1, and that of IC reaching 13741±808g（m2yr）-1, which are much higher than those of other regions with high contents of Corg. Therefore, YRD has a significant burial efficiency for carbon sequestration.

关键词： Yellow River delta late Quaternary strata carbon burial rate organic carbon inorganic carbon

Degradation of 2,4-DCP by the Immobilized Laccase on the Carrier of Fe304@SiO2-NH2

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Chinese Journal of Chemistry 2012年第12期30卷 2849-2860页

作者： Huan Weiwei Yang Yuxiang Wu Bin yuan hongming Zhang Yani Liu Xiangnong School of Chemistry and Molecular Engineering East China University of Science & Technology Shanghai 200237 China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun Jilin 130012 China Analysis Test Center Yangzhou University Yangzhou Jiangsu 225009 China

In this paper, the laccase immobilized on Fe304@SiO2-NH2 nanoparticles was successfully prepared by the glutaraldehyde cross-linking method. The degradations of 2,4-diehlorophenol （2,4-DCP） catalyzed by laccase and immobilized laccase were carried out. The optimal conditions regarding degradation efficiency were also discussed, which include reaction time, pH value, temperature, concentration of 2,4-DCP and laccase. When laccase was immobilized on Fe304@SiO2-NH2 carrier by crosslinking with glutaraldehyde, the stability and repetition were im- proved significantly. The removal efficiency of 2,4-DCP by immobilized laccase still remained over 59% after six cycles of operation. Degradation of 2,4-DCP is a first-order reaction and the activation energies of 2,4-DCP catalyzed by laccase and immobilized laccase are 51.93 kJ·mol-1 strate the immobilized laccase had a faster degradation Fe304@MSS-NH2 can promote the degradation reaction. and 44.12 kJ·mol-1, respectively. The results demonrate than the free laccase; the magnetic carrier

关键词： Fe3O4@SiO2-NH2 nanoparticles immobilized laccase degradation rate repetition magneto-inducedeffect

Hydrothermal Synthesized Co-Ni3S2 Ultrathin Nanosheets for Efficient and Enhanced Overall Water Splitting

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Chemical Research in Chinese Universities 2019年第2期35卷 179-185页

作者： JIAN Juan yuan Long LI He LIU Huanhuan ZHANG Xinghui SUN Xuejiao yuan hongming FENG Shouhua State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012P.R.China Key Laboratory of Functional Materials Physics and Chemistry Ministry of EducationJilin Normal UniversitySiping 136000R R. China

We used the one-step hydrothennal controlled synthesis method for Co-Ni3S2 ultrathin nanosheets grown directly on nickel foam(NF).The as-synthesized Co-Ni3S2/NF showed eiilianced activities in the hydrogen evolution reaction(HER),oxygen evolution reaction(OER)and better overall water splitting(OWS)efficiency than the iin-doped Ni3S2/*** voltage of Co-Ni3S2/NF for OWS was only 1.58 V at the current density of 10 niA/cm^2 and with long time(>30 h)current output during the current-density(i-t)*** good i-t pertonnance was also observed in both HER and OER ***,the Co-Ni3S2/NF showed a large current density(>1A/cm^2)for both HER and *** the current densities reached 100 and 1000 mA/cm^2,the required overpotentials tor Co-Ni3S2/NF were 0.35 and 0.75 V for OER and 0.30 and 0.85 V for ***,after introducing Co,the activity of Ni3S2-based material was strongly enhanced.

关键词： Co-Ni3S2/nickel tbam(NF) Ultrathin nanosheet Water splitting Hydrogen evolution reaction Oxygen evolution reaction

Degradation of 2,4-dichlorophenol catalyzed by the immobilized laccase with the carrier of Fe_3O_4@MSS–NH_2

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Chinese Science Bulletin 2014年第5期59卷 509-520页

作者： Yan Huang Yanjie Xi Yuxiang Yang Cheng Chen hongming yuan Xiangnong Liu School of Chemistry and Molecular Engineering East China University of Science & Technology State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Analysis Test Center Yangzhou University

With the Fe3O4@MSS(magnetic mesoporous silica spheres)–NH2as the carrier and the glutaraldehyde as crosslinking agent,the immobilized laccase has been prepared and characterized by XRD,IR,SEM and BET *** the optimal conditions,the removal efficiency of2,4-DCP reached 88%and the removal efficiency still remained 61.5%after five cycles of *** virtue of GC–MS analysis,2,5-dimethoxyl-1,4-quinone,2-chlorine-1,4-dimethoxyl benzene,3,30-dichlorine-4,40-dimethoxyl biphenyl,maleic acid phenol ester,and three kinds of maleic acid,alcohol ester,and para-hydroxyl phenol ester compounds have been identified as intermediate and final degradation products of 2,4-DCP,***,the degradation products of 2,4-DCP have been confirmed by performing the1H-NMR and13C-NMR experiments,further demonstrating the degradation mechanism of 2,4-DCP by the immobilized laccase.

关键词：二氯苯酚固定化酶降解 GC-MS分析 13C-NMR 载波催化 1H-NMR

Large-Scale CRISPR Screen of LDLR Pathogenic Variants

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Research 2024年第2期2023卷 213-225页

作者： Mengjing Li Lerong Ma Yiwu Chen Jianing Li Yanbing Wang Wenni You hongming yuan Xiaochun Tang Hongsheng Ouyang Daxin Pang Key Lab for Zoonoses Research Ministry of EducationAnimal Genome Editing Technology Innovation CenterCollege of Animal SciencesJilin UniversityChangchunJilin Province 130062China The Institute of Translational Medicine Tianjin Union Medical Center of Nankai UniversityTianjin 300071China Chongqing ResearchInstitute Jilin UniversityChongqing 401123China Chongqing Jitang Biotechnology Research Institute Co.Ltd. ChongqingChina

Familial hypercholesterolemia(FH)is a frequently occurring genetic disorder that is linked to early-onset cardiovascular *** left untreated,patients with this condition can develop severe cardiovascular ***,many patients remain undiagnosed,and even when diagnosed,the treatment is often not *** mutations in the LDLR gene are the primary cause of FH,predicting whether novel variants are pathogenic is not a straightforward *** the functionality of LDLR variants is crucial in uncovering the genetic basis of *** study utilized CRISPR/Cas9 cytosine base editors in pooled screens to establish a novel approach for functionally assessing tens of thousands of LDLR variants on a large scale.A total of more than 100 single guide RNAs(sgRNAs)targeting LDLR pathogenic mutations were successfully screened with relatively high *** of these,5 sgRNAs were further subjected to functional verification studies,including 1 in the promoter,1 in the antisense RNA,1 in the exon,and 2 in the *** for the variant caused by the sgRNA located at intron 16,the functionalities of the other LDLR variants were all *** high similarity of LDLR intron sequences may lead to some false ***,these results confirm the reliability of the large-scale screening strategy for functional analysis of LDLR variants,and the screened candidate pathogenic mutations could be used as an auxiliary means of clinical gene detection to prevent FH-induced heart disease.

关键词： LDLR Screen straight

Hydrothermal synthesis and characterization of rare-earth ruthenate pyrochlore compounds R_2Ru_2O_7(R=Pr_(3+),Sm(3+)-Ho(3+))

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Science China Chemistry 2011年第6期54卷 941-946页

作者： YAO LinRan, WANG Dong, PENG Wen, HU WeiWei, yuan hongming & FENG ShouHua State key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry, Jilin University, Changchun 130023, China State key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun China

A series of pyrochlore oxides, R2Ru2O7 (R=Pr3+, Sm3+–Ho3+) were synthesized under mild hydrothermal conditions. All the samples crystallize in uniform octahedron characteristically. The products were characterized by powder X-ray diffraction, scanning electron microscopy, energy-disperse X-ray spectroscopy, and dc susceptibility, and the factors that affected the crystallization were discussed. It was found that the purity of products depends strongly on the raw materials and the amount of alkalinity in the initial reaction mixtures. The ZFC and FC susceptibilities of all of the compounds R2Ru2O7 at low temperature were also measured and discussed.

关键词： hydrothermal synthesis pyrochlore compounds magnetic properties

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黄河三角洲利津超级叶瓣时空范围的再认识

地理学报 2019年第1期74卷 146-161页

作者：何磊叶思源袁红明薛春汀中国地质调查局滨海湿地生物地质重点实验室青岛266071 青岛海洋科学与技术国家实验室海洋矿产资源评价与探测技术功能实验室青岛266061 中国地质调查局青岛海洋地质研究所青岛266071

黄河三角洲是世界著名的河流三角洲之一。自有学者首次系统地提出黄河三角洲全新世10期超级叶瓣的时空分布范围后,这一观点近30年来未见明显的改进。借助渤海湾南岸研究区获得的4个20～30 m钻孔地层资料和相应的AMS14C测年数据,以及前... 详细信息

黄河三角洲是世界著名的河流三角洲之一。自有学者首次系统地提出黄河三角洲全新世10期超级叶瓣的时空分布范围后,这一观点近30年来未见明显的改进。借助渤海湾南岸研究区获得的4个20～30 m钻孔地层资料和相应的AMS14C测年数据,以及前人部分钻孔的研究成果,本文对黄河三角洲利津超级叶瓣的沉积演化框架和时空分布特征进行了重新厘定:研究区全新世沉积环境由早期的河道和泛滥平原沉积,逐渐向海侵过程中盐沼、潮坪和浅海相演化。海平面上升速率减缓之后三角洲开始发育并逐步成陆,直至最后被陆相沉积所覆盖。黄河下游古河道在9000-8000 cal a BP左右可能在黄骅南部入海;大约8000 cal a BP之后,黄河主河道南迁到滨州—惠民一带,并在7000-5500 cal a BP之间发育利津超级叶瓣;利津超级叶瓣的北界可能在马山子和阳信一界,而南界在郭井子和弥河之间;约5500 cal a BP之后,黄河下游古河道可能重新过黄骅入海,于5500-3500 cal a BP左右形成黄骅超级叶瓣;约3500 cal a BP之后,黄河古河道北迁至天津,直至～700 BC左右主流河道入海口再次南迁至河北岐口附近。

关键词：黄河三角洲超级叶瓣河道变迁贝壳堤沉积演化

Highly nonlinear property and threshold voltage of Sc2O3 doped ZnO Bi2O3-based varistor ceramics prepared by high-energy ball milling method

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Highly nonlinear property and threshold voltage of Sc2O3 dop...

黄河三角洲全新世以来沉积环境的划分及各环境中碳埋藏速率的评价

第十六届全国晶体生长与材料学术会议

作者： Dong Xu Song Bai Lei Jiao Hongxing Xu hongming yuan Guoping Zhao Xiaonong Cheng School of Material Science and Engineering Jiangsu University Changzhou Engineering Research Institute of Jiangsu University State Key Laboratory of Electrical Insulation and Power Equipment Xi’an Jiaotong University State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University

A series of ZnO Bi2O3 -based varistor ceramics doped with 0-0.4 mol% Sc2O3 were prepared by high-energy ball milling and sintered at temperatures between 1000 ℃ and 1150 ℃. X-ray diffractometry (XRD) and scanning electron microscopy (SEM) were applied to characterize the phases and microstructure of the varistor ceramics. A DC parameter instrument for varistor ceramics was applied to investigate the electronic properties and V-I characteristics. The results show that there are no changes in crystal structure with Sc2O3 -doped varistor ceramics and that the average size of ZnO grain increases first and then decreases. The best electronic characteristics of the varistor ceramics prepared by high-energy ball milling were found in 0.3mol% Sc2O3 -doped ZnO Bi2O3 -based sintered at 1000 ℃, which exhibited a threshold voltage of 821V/mm, nonlinear coefficient of 62.1 and leakage current of 0.16μA.

关键词： Ceramics Varistors Rare earth alloys and compounds Microstructure Electrical properties

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地球科学（中国地质大学学报） 2014年第4期39卷 451-461页

作者：赵广明叶思源丁喜桂袁红明王锦中国地质调查局滨海湿地生物地质重点实验室山东青岛266071 国土资源部海洋油气资源与环境地质重点实验室山东青岛266071 青岛海洋地质研究所山东青岛266071

为了研究黄河三角洲全新世不同古环境中的碳埋藏速率,于2007年在研究区布设了一口30.3m浅钻,以对其进行了沉积学观测以及含水量、有机碳、总碳和营养成分测试分析.通过地层分析,将其全新世地层划分为8种沉积环境.运用历史地理学和沉积... 详细信息

为了研究黄河三角洲全新世不同古环境中的碳埋藏速率,于2007年在研究区布设了一口30.3m浅钻,以对其进行了沉积学观测以及含水量、有机碳、总碳和营养成分测试分析.通过地层分析,将其全新世地层划分为8种沉积环境.运用历史地理学和沉积地质学综合分析方法对现代黄河三角洲沉积环境中部分层位进行了精确的年代划分,其他层位也进行了年代推测.同时利用确定的年代计算了不同沉积环境碳的埋藏速率.结果表明:总碳和有机碳与各营养元素都呈很好的线性相关;沉积物的沉积速率是有机碳和总碳埋藏速率的主控因素;虽然沉积物Corg浓度相对较低,但由于其高沉积速率,Corg的平均埋藏速率达到1 331g/(m2·a),远高于世界其他高Corg浓度的湿地,因此是很好的碳汇地质体.

关键词：古环境演化碳埋藏速率沉积环境地质黄河三角洲