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Impacts of Water-Sediment Regulation Scheme on Chromophoric Dissolved Organic Matter in the Lower Yellow River

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Journal of Ocean University of China 2024年第2期23卷 455-466页

作者： LIU Xiao jiang xueyan LIU Qian SUI Juanjuan ZOU Li Key Laboratory of Marine Chemistry Theory and Technology of Ministry of Education Ocean University of ChinaQingdao 266100China College of Chemistry and Chemical Engineering Ocean University of ChinaQingdao 266100China School of Earth Sciences University of BristolBristolBS81RJUK North China Sea Environmental Monitoring Center State Oceanic AdministrationQingdao 266033China Key Laboratory of Ecological Prewarning Protection and Restoration of Bohai SeaMinistry of Natural ResourcesQingdao 266033China Key Laboratory of Marine Environment and Ecology of Ministry of Education Ocean University of ChinaQingdao 266100China College of Environmental Science and Engineering Ocean University of ChinaQingdao 266100China

As a river with more than 3000 reservoirs in its watershed,the Yellow River has been affected by dams not only on the sediment load,but also on the water ***-sediment regulation scheme(WSRS),which has been carried out annually in the Yellow River since 2002,is a typical human activity affecting river water *** dissolved organic matter(CDOM)in river is susceptible to changes in ecological and environmental conditions as well as human ***,we report variations in dissolved organic carbon concentrations,compositions and sources of CDOM in time series samples in the lower Yellow River during *** addition,a parallel factor fluorescence analysis(PARAFAC)method is applied to identify different fluorescent components in water samples during WRSR,showing four major components including tryptophan-like component(C1),microbial humic-like component(C2),terrestrial humic-like component(C3)and tyrosine-like component(C4).In general,C1 increased after water regulation,while C2 and C3 increased after sediment regulation,indicating that the water and sediment released by the dam have different effects on CDOM *** the impacts of the dam,source of CDOM in the lower Yellow River is mainly autochthonous related to microbial activities,and is regulated by the terrestrial input during WSRS *** resuspension inhibits microbial activities and reduces the production of autochthonous ***,human activities especially WSRS,as exemplified here,significantly alter the quality and quantity of CDOM in the lower Yellow River,affecting CDOM dynamics and biogeochemical processes in the estuarine environment.

关键词： chromophoric dissolved organic matter(CDOM) water-sediment regulation scheme(WSRS) Yellow River optical properties

Application of sequential extraction for analyzing source and sink of uranium in Huanghe River sediments,China

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Journal of Oceanology and Limnology 2023年第3期41卷 936-946页

作者： Xihuang ZHONG xueyan jiang Huijun HE Wenwen ZHANG Chunxia MENG Feng SUN Key Laboratory of Marine Chemistry Theory and Technology of Ministry of Education Ocean University of ChinaQingdao 266100China College of Chemistry and Chemical Engineering Ocean University of ChinaQingdao 266100China School of Materials Science and Engineering Ocean University of ChinaQingdao 266100China

Geochemical behaviors of heavy metals are closely related to their chemical state that can be divided by sequential extraction into exchangeable(F1),bound to carbonates(F2),bound to Fe-Mn oxides(F3),bound to organic matter or sulfide(F4),and residual(F5).Uranium in sediment of the Huanghe(Yellow)River,China,in different chemical states was extracted using the five-step procedure of Tessier and the source and sink were *** show that more than 70%of the total uranium was immobile residual F5 in abundance,followed in order of F4>F3>F2>F1,indicating that the main source of uranium in the sediments was from weathered rock in the drainage *** addition,the uranium in the sediments presents potential exogenous input in the Lanzhou,Baotou,and Tongguan ***-Mn oxides are main carriers of unstable uranium,especially those of F1 and *** and illite are secondary adsorption minerals of unstable uranium in sediments under natural *** activities can also produce an obvious impact on uranium *** study provides a reference for the application of sequential extraction in analyzing the source and sink of uranium in river sediments.

关键词： uranium sequential extraction mineral composition sediment Huanghe(Yellow)River

Impact of Water-Sediment Regulation on Variations of Amino Acids in the Middle-Lower Yellow River, China

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Journal of Ocean University of China 2020年第2期19卷 369-376页

作者： ZHANG Kun ZOU Li DAI Qunying WANG Jian jiang xueyan LIANG Shengkang College of Environmental Science and Engineering Ocean University of ChinaQingdao 266100China Key Laboratory of Marine Environment and Ecology Ministry of EducationOcean University of ChinaQingdao 266100China SGS-CSTC Standards Technical Services(Qingdao)Co. Ltd.Qingdao 266101China Key Laboratory of Marine Chemistry Theory and Technology Ministry of EducationOcean University of ChinaQingdao 266100China

In order to examine the impacts of water-sediment regulation on regional carbon cycling,we collected water,particulate and sediment samples from the middle-lower Yellow River in late June and early July,2015 and analyzed their specific amino acids(AA),DOC,POC,and bacteria *** by 14 specific AA,the total hydrolysable AA(THAA),particulate AA(PAA),and sediment AA(SAA)varied in ranges of 2.29-9.05μmol L^-1,5.22-22.96μmol L^-1,and 81.7-137.19μg g^-1 dry *** the regulation,dissolved free AA(DFAA)decreased by 29%while DCAA increased by 72%.These variations suggested that DFAA were further degraded,while DCAA molecules were further ***,PAA increased almost 4 times as many as those before regulation,and SAA increased as *** regulation,the amounts of bioactive amino acids(Asp,Glu and Gly)increased in THAA but decreased in PAA,with little changes in *** ratios of Asp/Gly in different phases increased after regulation,indicating the AA contributions were promoted by calcareous organisms rather than by siliceous *** correlation analysis showed that PAA was primary representatives of AA and organic carbon,followed by DCAA and ***,bacterial reproduction played a key role in shaping the AA compositions and properties,followed by the redox condition and acid-base *** results of this study provided a clear evidence for the effects of water-sediment regulation on regional biogeochemistry of organic carbon in the middle-lower Yellow River.

关键词： the middle-lower Yellow River water-sediment regulation amino acids organic carbon

A review of brain imaging biomarker genomics in Alzheimer’s disease:implementation and perspectives

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Translational Neurodegeneration 2022年第1期11卷 294-330页

作者： Lanlan Li Xianfeng Yu Can Sheng xueyan jiang Qi Zhang Ying Han Jiehui jiang School of Information and Communication Engineering Shanghai UniversityShanghai 200444China School of Biomedical Engineering Hainan UniversityHaikou 570228China Department of Neurology Xuanwu Hospital of Capital Medical UniversityBeijing 100053China Institute of Biomedical Engineering School of Life ScienceShanghai UniversityShanghai 200444China.

Alzheimer’s disease(AD)is a progressive neurodegenerative disease with phenotypic changes closely associated with both genetic variants and imaging *** imaging biomarker genomics has been developed in recent years to reveal potential AD pathological mechanisms and provide early *** technique integrates multimodal imaging phenotypes with genetic data in a noninvasive and high-throughput *** this review,we summarize the basic analytical framework of brain imaging biomarker genomics and elucidate two main implementation scenarios of this technique in AD studies:(1)exploring novel biomarkers and seeking mutual interpretability and(2)providing a diagnosis and prognosis for AD with combined use of machine learning methods and brain imaging biomarker ***,we highlight the necessity of brain imaging biomarker genomics,discuss the strengths and limitations of current methods,and propose directions for development of this research field.

关键词： Imaging biomarker genomics Alzheimer’s disease Evolving technologies Implementation

Lineage reprogramming of fibroblasts into induced cardiac progenitor cells by CRISPR/Cas9-based transcriptional activators

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Acta Pharmaceutica Sinica B 2020年第2期10卷 313-326页

作者： jianglin Wang xueyan jiang Lixin Zhao Shengjia Zuo Xiantong Chen Lingmin Zhang Zhongxiao Lin Xiaoya Zhao Yuyan Qin Xinke Zhou Xi-Yong Yu Key Laboratory of Molecular Target&Clinical Pharmacology and the State Key Laboratory of Respiratory Disease School of Pharmaceutical Sciences&the Fifth Affiliated HospitalGuangzhou Medical UniversityGuangzhou 511436China

Overexpression of exogenous lineage-determining factors succeeds in directly reprogramming fibroblasts to various cell *** studies have reported reprogramming of fibroblasts into induced cardiac progenitor cells(iCPCs).CRISPR/Cas9-mediated gene activation is a potential approach for cellular reprogramming due to its high precision and multiplexing *** we show lineage reprogramming to iCPCs through a dead Cas9(dCas9)-based transcription activation *** and robust activation of endogenous cardiac factors,including GATA4,HAND2,MEF2 C and TBX5(G,H,M and T;GHMT),can reprogram human fibroblasts toward *** iCPCs show potentials to differentiate into cardiomyocytes,smooth muscle cells and endothelial cells in *** of MEIS1 to GHMT induces cell cycle arrest in G2/M and facilitates cardiac *** reprogramming of human fibroblasts into iCPCs provides a promising cellular resource for disease modeling,drug discovery and individualized cardiac cell therapy.

关键词： Lineage reprogramming Human foreskin fibroblasts Induced cardiac progenitor cells CRISPR/Cas9 SAM Cardiac transcription factors

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锥形件镦挤整形凹模加工工艺研究

热加工工艺 2011年第13期40卷 84-86页

作者：姜雪燕潍坊职业学院机电工程系山东潍坊261031

通过分析锥形件镦挤整形凹模破裂的原因,对该凹模的毛坯锻造工艺以及热处理工艺进行了有效改进,给出了更加合理的毛坯锻造工艺参数,以及毛坯预处理工艺和整形凹模的热处理工艺,从而大大提高了整形凹模的使用寿命,保证了锥形件镦挤整形... 详细信息

通过分析锥形件镦挤整形凹模破裂的原因,对该凹模的毛坯锻造工艺以及热处理工艺进行了有效改进,给出了更加合理的毛坯锻造工艺参数,以及毛坯预处理工艺和整形凹模的热处理工艺,从而大大提高了整形凹模的使用寿命,保证了锥形件镦挤整形工序的顺利进行。

关键词：锥形件整形凹模锻造热处理

智慧建筑运维管理平台的应用研究--以某大型商业综合体项目为例

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建筑经济 2021年第9期42卷 78-82页

作者：蒋雪雁成都兴城人居地产投资集团股份有限公司四川成都610041

以智慧建筑运维管理平台的技术性支持为切入点,明确以物联网技术为基础的智慧建筑运维管理平台层次架构,即感知层、网络层、应用层。以某大型商业综合体为例,介绍其智慧化建筑运维管理平台的具体功能,包括能耗管理、安全管理、楼宇自控... 详细信息

以智慧建筑运维管理平台的技术性支持为切入点,明确以物联网技术为基础的智慧建筑运维管理平台层次架构,即感知层、网络层、应用层。以某大型商业综合体为例,介绍其智慧化建筑运维管理平台的具体功能,包括能耗管理、安全管理、楼宇自控管理、照明管理和运维管理,实现建筑内部信息交互与可视化呈现、故障智能化自诊断、能源的高效管理等功能。

关键词：智慧建筑运维管理平台物联网技术商业综合体

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宋朝政府购买中的承包制

学术研究 2006年第11期 106-112页

作者：李晓姜雪燕中国政法大学商学院中国政法大学社会学院

在法律规定层面上,承包制是宋朝政府购买领域两个合法的交易方式之一。在实际执行层面上,承包制大规模始自王安石变法时期,延及南宋,在若干物品的采购中实施。与其他领域的承包制相比,政府购买领域的承包制表现出一系列特点,在称谓、出... 详细信息

在法律规定层面上,承包制是宋朝政府购买领域两个合法的交易方式之一。在实际执行层面上,承包制大规模始自王安石变法时期,延及南宋,在若干物品的采购中实施。与其他领域的承包制相比,政府购买领域的承包制表现出一系列特点,在称谓、出现背景、承包者身份、承包办法、承包条件等方面都有很大差异。具有自愿性和竞争性的承包制,对于消除强制性征购之弊、提高政府购买资金的使用效率,有一定积极意义,是宋朝政府购买史上的一个重要的制度创新。但在实际执行中,真正获益者并非普通百姓,而多数是官吏以及与官吏相勾结的商人。南宋时甚至出现了官吏与承包商相勾结盘剥百姓的弊端。

关键词：宋朝财政政府购买承包制

IVIM-DWI及纹理分析评估子宫内膜癌生物学行为的研究进展

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磁共振成像 2023年第5期14卷 191-195页

作者：蒋雪艳董江宁蚌埠医学院研究生院蚌埠233030 中国科学技术大学附属第一医院西区(安徽省肿瘤医院)影像科合肥230031

近年来,我国子宫内膜癌的发病率和死亡率呈上升趋势并居于女性生殖系统恶性肿瘤的第二位,严重威胁女性的生命健康。子宫内膜癌的生物学行为如病理类型、分期、分级和细胞增殖情况是影响患者诊疗及预后的重要因素。然而这些生物学行为的... 详细信息

近年来,我国子宫内膜癌的发病率和死亡率呈上升趋势并居于女性生殖系统恶性肿瘤的第二位,严重威胁女性的生命健康。子宫内膜癌的生物学行为如病理类型、分期、分级和细胞增殖情况是影响患者诊疗及预后的重要因素。然而这些生物学行为的评估往往需要通过穿刺活检或术后病理才能获得,不仅有创且信息滞后。因此临床迫切需要一种早期无创性预测子宫内膜癌生物学行为的方法,从而指导患者的个体化治疗及预后评估。体素内不相干运动扩散加权成像(intravoxel incoherent motion diffusion weighted imaging, IVIM-DWI)能够从分子水平无创地评估肿瘤组织的水分子扩散和微循环灌注;纹理分析能够从微观角度无创地对肿瘤异质性进行客观、定量评估。IVIM-DWI与纹理分析为精准预测子宫内膜癌生物学行为提供了病理生理信息和微观层面信息,弥补了活检及手术病理的不足,有望为子宫内膜癌的诊治提供新的思路。本文对近几年IVIM-DWI与纹理分析技术预测子宫内膜癌生物学行为的最新相关研究进展进行综述,从子宫内膜癌组织学分型、分级和Ki-67表达多个方面对IVIM-DWI及纹理分析技术在评估子宫内膜癌生物学行为中的应用价值进行分析,旨在为早期无创性评估患者预后、制订个性化治疗方案提供依据。

关键词：子宫内膜癌磁共振成像体素内不相干运动扩散加权成像纹理分析分型分级 Ki-67