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Compositional characteristics of sediment from Jiaozhou Bay in North China and the implication to the provenance

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Journal of Oceanology and Limnology 2023年第5期41卷 1729-1741页

作者： ziwei SUN Jin LIU Yue ZHANG Jinming SONG yuanyuan XIAO Huamao yuan Ning LI Xuegang LI College of Chemistry and Molecular Engineering College of Marine Science and Biological EngineeringQingdao University of Science and TechnologyQingdao 266042China Public Technology Service Center Institute of OceanologyChinese Academy of SciencesQingdao 266071China Key Laboratory of Marine Ecology&Environmental Sciences Institute of OceanologyChinese Academy of SciencesQingdao 266071China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China Qingdao National Laboratory for Marine Science and Technology Qingdao 266061China Key Laboratory of Marine Geology and Environment Institute of OceanologyChinese Academy of SciencesQingdao 266071China

Rare earth elements(REEs)can be used to trace source materials and identify their provenances,because of significant conservation and immobility during chemical alteration processes after erosion of materials from the *** study focused on the temporal variation of REEs for columnar sediments from the mouth of Jiaozhou Bay in North China to understand the potential controls for the geochemical variations of *** extraction experiments,we identified that the residual fraction is the main host for REEs compared with other fractions(i.e.,exchangeable and carbonate fraction,easily reducible oxides fraction,reducible oxides fraction,magnetite fraction).REE ratios(e.g.,La_(N)/Sm_(N)and La_(N)/Yb_(N);N:normalized by chondrite)lack correlations with grain size or the chemical index of alteration(CIA),which is correlated with major *** these indicate that these REE variations reflect the varying contribution of source materials from different provenances instead of grain size or chemical weathering *** ratios(e.g.,La_(N)/Sm_(N)and La_(N)/Yb_(N))remain relatively constant until the depth of roughly 40 cm(equivalent to the year 1995),and show obvious changes beyond this *** REE characteristics of Jiaozhou Bay with those of neighboring rivers and bedrocks,the relative contributions of Dagu River-Jiaolai River,and Licun River may have been increased during the sedimentary processes,which could be caused by the construction of reservoir and related change of aquaculture(e.g.,rapid accumulation of organic materials).

关键词： Jiaozhou Bay sediments rare earth elements(REEs) sequential extraction provenance

Geochronology and Petrogenesis of Granitoid Intrusions in the Feidong District, Southern Tan-Lu Fault Zone, China

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Acta Geologica Sinica(English Edition) 2020年第6期94卷 1960-1976页

作者： FU Xiang ZHANG Dayu YAO ziwei REN Kangda DENG Yufeng LI Jiahao JIANG Ren yuan Feng School of Resources and Environmental Engineering Hefei University of TechnologyHefei 230009China Nanjing Geological Survey Center China Geological SurveyNanjing 210016China

The Feidong district is located in the southern segment of the Tan-Lu fault zone that separates the South China Block(NCB)from the North China Craton(NCC).We report zircon U-Pb geochronology and Hf isotope data,as well as whole-rock geochemistry for Xishanyi granodiorite and Jianshan granite in the Feidong *** U-Pb dating results show that the emplacement ages of the Xishanyi and Jianshan intrusions are 124±3 Ma and 130±1 Ma respectively,coeval with magmatic events linked to large-scale lithospheric thinning in eastern *** whole-rock geochemistry of the Xishanyi and Jianshan intrusions demonstrate that they are peraluminous,high potassium calc-alkaline I-type granites with adakitic *** intrusions underwent weak crustal assimilation during *** in situ zirconε(Hf)(t)values of the Xishanyi granodiorites range from-26.4 to-21.8,with T(DM2)model ages of 2552 to 2841 *** in situ zirconε(Hf)(t)values of the Jianshan granite are from-27.5 to-23.0 with T(DM2)model ages of 2632 to 2904 *** peak age of inherited zircon grains from the Xishanyi granodiorite and the Jianshan granite were^2.07 Ga and^1.94 Ga,*** compared with the regional magmatism,we suggest that both the Xishanyi and Jianshan granitoid intrusions were derived from partial melting of the NCC lower crust.

关键词： Granitoid intrusion Petrogenesis Feidong district Tan-Lu Fault Zone

基于肝、脾、肾三脏探究肠道微生态与帕金森病关系

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辽宁中医药大学学报 2023年第3期25卷 209-212页

作者：严俊杰杨丽静袁子薇侯博琳胡长磊赵梦琴河北中医学院河北石家庄050091 河北中医学院第一附属医院河北石家庄050011

帕金森病(parkinson's disease,PD)是目前世界上第二常见的中枢神经退行性疾病,其患病率随年龄增长而增加,我国65岁以上的人群帕金森病的患病率大约是1.7%。其起病隐匿,容易被人忽略。但其发病机制尚不明确,近年来,大量研究发现肠道菌... 详细信息

帕金森病(parkinson's disease,PD)是目前世界上第二常见的中枢神经退行性疾病,其患病率随年龄增长而增加,我国65岁以上的人群帕金森病的患病率大约是1.7%。其起病隐匿,容易被人忽略。但其发病机制尚不明确,近年来,大量研究发现肠道菌群失调与PD的发生发展紧密相关。而中医作为我国的传统医学,基于其中医脏腑理论,可认为肝、脾、肾三脏虚损为PD的主要致病原因。该文通过分别论述肝、脾、肾三脏与肠道的关系,进而探讨肝、脾、肾三脏虚损引发肠道微生态紊乱与帕金森病的关系,以期为PD从中医肝、脾、肾三脏论治提供理论依据,从而使中医药在治疗PD中更好地发挥作用,以尽量减少西药治疗带来的不良反应。

关键词：帕金森病肝脾肾肠道菌群脑肠轴

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母亲产后抑郁对婴幼儿生长发育的影响

中国儿童保健杂志 2024年第9期32卷 994-998页

作者：吴珊红王艳袁一鸣赵明月宫子涵张紫微李天益裴飞黑龙江中医药大学黑龙江哈尔滨150040 黑龙江中医药大学附属第二医院

婴幼儿生长发育落后与多种因素息息相关。产后抑郁作为妊娠后妇女高发的一类精神情绪类疾病,不仅危害产后母亲的身心健康,对婴幼儿的生长发育,如身高、体重、运动、认知、语言、行为等会产生消极的影响。本文针对母亲产后抑郁对婴幼儿... 详细信息

婴幼儿生长发育落后与多种因素息息相关。产后抑郁作为妊娠后妇女高发的一类精神情绪类疾病,不仅危害产后母亲的身心健康,对婴幼儿的生长发育,如身高、体重、运动、认知、语言、行为等会产生消极的影响。本文针对母亲产后抑郁对婴幼儿生长发育的不利影响,及母亲产后抑郁的非药物干预措施进行文献综述,为临床儿童的发育和保健提供新的视角。

关键词：产后抑郁婴幼儿生长发育

脉冲式心电门控与Force CT 70 kV前瞻性大螺距技术在冠状动脉成像中的对比研究

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影像研究与医学应用 2024年第19期8卷 7-10页

作者：王云玲罗琳穆紫薇罗成茂原小军内蒙古科技大学包头医学院第一附属医院影像科内蒙古包头014010

目的:探讨脉冲式心电门控与Force CT 70 kV前瞻性大螺距冠状动脉成像对辐射剂量和图像质量的影响。方法:搜集2022年1月—2023年1月在内蒙古科技大学包头医学院第一附属医院就诊的49例行256层iCT 100 kV脉冲式心电门控冠状动脉CT血管成像... 详细信息

目的:探讨脉冲式心电门控与Force CT 70 kV前瞻性大螺距冠状动脉成像对辐射剂量和图像质量的影响。方法:搜集2022年1月—2023年1月在内蒙古科技大学包头医学院第一附属医院就诊的49例行256层iCT 100 kV脉冲式心电门控冠状动脉CT血管成像(CCTA)的患者和37例行Force CT 70 kV前瞻性大螺距CCTA的患者资料,分别记为A组和B组,共86例。比较两组患者的心率、各段冠状动脉CT值、信噪比、对比噪声比及辐射剂量。结果:两组患者的心率、各段冠状动脉CT值、信噪比、对比噪声比及辐射剂量的差异有统计学意义(P<0.05)。结论:Force CT 70 kV前瞻性大螺距冠状动脉成像比脉冲式心电门控100 kV管电压下冠脉成像对心率的要求减低,70 kV管电压条件下可以降低辐射剂量,而图像质量仍可满足诊断要求。

关键词：双源CT 冠状血管造影术自适应前瞻性心电门控辐射剂量

The stripper design and test at HIRFL-CSR

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Nuclear Science and Techniques 2010年第4期21卷 237-240页

作者： ZHANG Hongbin XIAO Guoqing yuan Youjin XU Hushan LI Zhankui LU ziwei MAO Ruishi ZHAO Tiecheng Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China

Charge stripping is employed to produce multi-charged ions for injecting the cooling storage *** penetrating through the carbon foil,the widened distribution of ion charge states poses a limit to the ion ***,the carbon foil plays a key role in the charge stripping *** this paper,four strippers for Heavy Ion Research Facility at Lanzhou(HIRFL) and Cooling Storage Ring(CSR) are *** charge state distribution of the stripped ions is measured and the stripping efficiency of the foils is *** experimental results are consistent with the theoretical values.

关键词：兰州重离子加速器 CSR 塔设计多电荷离子重离子研究装置冷却储存环电荷态分布测试

Characteristics of implicit schemas in patients with major depressive disorder

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General Psychiatry 2022年第3期35卷 183-191页

作者： Jiayu Yao Qingqing Lin ziwei Zheng Shuangyi Chen yuan Wang Wenhui Jiang Jianyin Qiu Department of Psychological Counseling&Psychotherapy Shanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina

Background Many psychotherapy theories emphasise the importance of self-schema and other-schema,but most previous studies focused on the explicit self-schema in major depressive disorder(MDD).However,the limited studies of implicit self-schema in MDD have shown inconsistencies in their ***,only a few studies have investigated the implicit other-schema,and the pathway illustrating how implicit schemas influence depression remains *** The primary aim of our study was to explore the characteristics of implicit self-schema and otherschema in patients with *** also examine the chain-mediating effect of attachment relationships and interpersonal *** The present study included 88 patients with MDD and 88 healthy controls(HCs).The Hamilton Depression Rating Scale-17,Experiences in Close Relationships Inventory—Revised Questionnaire,Trust Scale and the Extrinsic Affective Simon Task(EAST)were used to assess depressive symptoms,attachment relationships,interpersonal trust and implicit schemas,*** sample t-test was used to compare the reaction time(RT)for positive and negative words within the two *** of covariance was used to explore the difference between two groups from the perspective of implicit schemas and interpersonal *** chain mediation model was verified by ***(1)For interpersonal patterns,patients with MDD scored significantly higher on attachment anxiety(F=82.150,p<0.001)and attachment avoidance(F=23.192,p<0.001)and scored significantly lower on the predictability(F=30.297,p<0.001),dependence(F=39.728,p<0.001)and faith(F=60.997,p<0.001)dimensions of interpersonal trust.(2)As for implicit schemas,no significant difference was found between the RT for positive self-words and negative self-words in patients with MDD(t=−1.056,p=0.294).However,the HC responded faster to positive self-words than negative self-words(t=−3.286,p=0.001).The RT for positive other-words and negative other

关键词： patients schema implicit

Synthesis of 4-Trifluoromethylated 1,3-Butadienes via Palladium Catalyzed Heck Reaction

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Chinese Journal of Chemistry 2021年第11期39卷 2962-2966页

作者： Yang Li Meng Hao Yu-Chen Chang yuan Liu Wen-Fei Wang Ning Sun Wen-Qing Zhu ziwei Gao Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries School of Environmental and Chemical EngineeringXi'an Polytechnic UniversityXi'anShaanxi710048 China School of Chemistry&Chemical Engineering Yan'an UniversityYan'anShaanxi716000 China Xinjiang Normal University UrumchiXinjiang650100 China

1,3-Butadiene plays a key role in modern synthetic chemistry and biochemistry because it is a key intermediate in the synthesis of many drugs.A new and effective method for the synthesis of 4-trifluoromethylated 1,3-butadiene through the fluorinated Heck reaction catalyzed by Pd(0)is *** additives,1-chloro-3,3,3-trifluoropropene(an inexpensive CF3 structural unit that is harmless to ozone)reacts with enamide to synthesize 4-trifluoromethylated 1,3-butadienes with good yield,high regioselectivity and chemical selectivity,and strong tolerance of substrate functional groups such as alkynes,aldehyde,and ester groups.

关键词： 1,3-Butadienes Trifluoromethylated Heck reaction Palladium Synthetic method

Evaluating Spatial Heterogeneity of Land Surface Hydrothermal Conditions in the Heihe River Basin

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Chinese Geographical Science 2020年第5期30卷 855-875页

作者： ZHANG yuan LIU Shaomin HU Xiao WANG Jianghao LI Xiang XU ziwei MA Yanfei LIU Rui XU Tongren YANG Xiaofan State Key Laboratory of Earth Surface Processes and Resource Ecology Faculy of Geographical ScienceBeijing Normal Univer-sityBeijing 100875China State Key Laboratory of Resources and Environmental Information Systems Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBejing 100101China Depariment of Geography HandanCollegeHebei 056005China

Land surface hydrothermal conditions(LSHCs) reflect land surface moisture and heat conditions, and play an important role in energy and water cycles in soil-plant-atmosphere continuum. Based on comparison of four evaluation methods(namely, the classic statistical method, geostatistical method, information theory method, and fractal method), this study proposed a new scheme for evaluating the spatial heterogeneity of LSHCs. This scheme incorporates diverse remotely sensed surface parameters, e.g., leaf area index-LAI, the normalized difference vegetation index-NDVI, net radiation-Rn, and land surface temperature-LST. The LSHCs can be classified into three categories, namely homogeneous, moderately heterogeneous and highly heterogeneous based on the remotely sensed LAI data with a 30 m spatial resolution and the combination of normalized information entropy(S’) and coefficient of variation(CV). Based on the evaluation scheme, the spatial heterogeneity of land surface hydrothermal conditions at six typical flux observation stations in the Heihe River Basin during the vegetation growing season were evaluated. The evaluation results were consistent with the land surface type characteristics exhibited by Google Earth imagery and spatial heterogeneity assessed by high resolution remote sensing evapotranspiration data. Impact factors such as precipitation and irrigation events, spatial resolutions of remote sensing data, heterogeneity in the vertical direction, topography and sparse vegetation could also affect the evaluation results. For instance, short-term changes(precipitation and irrigation events) in the spatial heterogeneity of LSHCs can be diagnosed by energy factors, while long-term changes can be indicated by vegetation factors. The spatial heterogeneity of LSHCs decreases when decreasing the spatial resolution of remote sensing data. The proposed evaluation scheme would be useful for the quantification of spatial heterogeneity of LSHCs over flux observation stati

关键词： land surface hydrothermal conditions(LSHCs) evapotranspiration spatial heterogeneity remote sensing evaluation scheme