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Cultural evolution and spatial-temporal distribution of archaeological sites from 9.5–2.3 ka BP in the Yan-Liao region, China

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Journal of Geographical Sciences 2019年第3期29卷 449-464页

作者： yuan yuying College of Urban and Environmental Sciences Peking University

With basic information from 8353 archaeological sites, this study describes a holistic spatial-temporal distribution pattern of archaeological sites of the prehistoric culture sequence from 9.5 ka BP (ka BP = thousands of years before 0 BP, where "0 BP" is defined as the year AD 1950) to 2.3 ka BP in the region that extends from the Yanshan Mountains to the Liaohe River Plain(i.e., the Yan-Liao region) in northern China. Based on spatial statistics analysis – including the spatial density of the sites and Geographic Information System nearest-neighbour analysis, combined with a review of environmental and climatic data – this paper analyses cultural evolution, the spatial-temporal features of the archaeological sites and human activities against the backdrop of climatic and environmental changes in this region. The results reveal that prehistoric cultural evolution in the Yan-Liao region is extensively influenced by climatic and environmental changes. The Xinglongwa, Zhaobaogou and Fuhe cultures, which primarily developed during a habitable period from 8.5 ka BP to 6.0 ka BP with strong summer monsoons, have similar maximum density values, spatial patterns and subsistence strategies dominated by hunting-gathering. Significant changes occurred in the Hongshan and Lower Xiajiadian cultures, with a significant increase in numbers and densities of sites and a slump in average nearest-neighbour ratio when the environment began to deteriorate starting in 6.0 ka BP. Additionally, with the onset of a weak summer monsoon and the predominance of primitive agriculture, sites of these two cultures present a different type of concentric circle-shaped pattern in space. As the environment continuously deteriorated with increasing aridity and the spread of steppe, more sites were distributed towards the south, and primitive agriculture was replaced by livestock husbandry in the Upper Xiajiadian culture. The most densely populated areas of the studied cultures are centralized within

关键词： prehistoric cultural evolution archaeological site spatial-temporal distribution climate and environmental change Yanshan Mountains Liaohe River Plain

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Integrating Bimetallic Nanoparticles with Covalent Organic Frameworks as Multifunctional Nanozyme for Colorimetric Detection of Hydrogen Peroxide and Glutathione

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Journal of Analysis and Testing 2024年第3期8卷 278-287页

作者： yuying yuan Xiaoxue Xi Ting Bao Pingguan Bian Feng Pei Xiuhua Zhang Shengfu Wang Wei Wen Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional MoleculesCollege of Chemistry and Chemical EngineeringHubei UniversityWuhan430062China Hubei Yihua Chemical Co. LtdYichang443000China

The controllable growth of metal nanoparticles on nanomaterials is becoming an effective strategy for developing nanocomposites with designated ***,a simple and mild strategy for the in situ growth of Pt–Pd bimetallic nanoparticles on covalent organic frameworks(COFs)to regulate the nanozyme activity was designed for colorimetric detection of hydrogen peroxide(H2O2)and glutathione(GSH).The COFs not only offer sufficient loading sites for the uniform dispersion of Pt–Pd bimetallic nanoparticles,but also increase the adsorption of substrate to promote the catalytic *** the bimetallic synergistic effect of Pt–Pd nanoparticles,the prepared multifunctional nanozyme(Pt–Pd/COFs nanozyme)simultaneously exhibited superior peroxidase(POD)-like activity and oxidase(OXD)-like *** the multifunctional nanozyme,a colorimetric sensing system was constructed for sensitive detection of H2O2 and GSH,with the wide linear ranges of 5–1000µmol/L and 1–40µmol/L,and the detection limits were 1.14μmol/L and 0.43μmol/L,*** was successfully used for the detection of real samples in environmental water and serum,providing a simple method for disease diagnosis and environmental monitoring.

关键词： Pt-Pd/COFs nanozyme Bimetallic synergistic effect Peroxidase-like activity Oxidase-like activity H_(2)O_(2)and GSH detection

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STRUCTURE AND CATALYTIC ACTIVITY OF RHODIUM COMPLEX COORDINATED ON 2-VINYLPYRIDINE-METHYL ACRYLATE COPOLYMER FOR THE CARBONYLATION OF METHANOL

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分子催化 1990年第S1期4卷 61-67页

作者： Chen yuying yuan Guoqing Wang Dianxun Chen Rongyao (Institute of Chemistry, Academia Sinica, Beijing, China)

A series of rhodium complexes coordinated on the hybrid ligand. 2-vinylpyridine-methyl acrylate copolymers, as catalyst for the carbonylation of methanol were synthesized by the reaction of the copolymers with tetracarbonyldichlorodirhodium. These complexes were in general very reactive in carbonylation of methanol to form acetic acid and methyl acetate without other by-product. The XPS studies of the complexes showed that the binding energies of Nls（399.1-399.4 eV） and that of Ols（532.5-532.9 eV） were higher than that of the copolymer ligand （Nls 398.1-398.3 eV and Ols 532.2-532.3 eV）, indicating the fromation of N→Rh and O→Rh coordination bonds. The IR spectra of complexes showed that the appearance of two absorption peaks of terminal carbonyl at 1990-2100 cm-1, characteristic of the cis-dicarbonyl rhodium moiety. These XPS and IR studies confirm the formation of cis-dicarbonylrhodium complex with the active centers（A） and （B） as shown in the text. The increase of activity of the complex in the

关键词： copolymer complexes acrylate coordinated moiety carbonyl methanol acetate acetic bonds

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Detection of Water Meter Digits Based on Improved Faster R-CNN

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Journal of Computer and Communications 2024年第3期12卷 1-13页

作者： Liyun Sun yuying yuan Shichao Qiao Ruijie Qi School of Computer Science and Technology Shandong University of Technology Zibo China

In order to more accurately detect the accuracy of word-wheel water meter digits, 2000 water meter pictures were produced, and an improved Faster-RCNN algorithm for detecting water meter digits was proposed. The improved Faster-RCNN algorithm uses ResNet50 combined with FPN (Feature Pyramid Network) structure instead of the original ResNet50 as the feature extraction network, which can enhance the accuracy of the model for small-sized digit recognition;the use of ROI Align instead of ROI Pooling can eliminate the error caused by the quantization process of the ROI Pooling twice, so that the candidate region is more accurately mapped to the feature map, and the accuracy of the model is further enhanced. The experiment proves that the improved Faster-RCNN algorithm can reach 91.8% recognition accuracy on the test set of homemade dataset, which meets the accuracy requirements of automatic meter reading technology for water meter digital recognition, which is of great significance for solving the problem of automatic meter reading of mechanical water meters and promoting the intelligent development of water meters.

关键词： Faster RCNN Identification of Water Meter Numbers ResNet50 FPN ROI Align

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全新世中期西辽河流域聚落空间分布及成因

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地理科学 2018年第5期38卷 773-779页

作者：袁钰莹北京大学城市与环境学院

全新世大暖期结束后的干冷气候事件和环境恶化使西辽河流域及比邻地区的聚落向南移动集中并推动了原始农业的发展和之后畜牧业对原始农业的取代。各文化的聚落均对河流依赖性较强,主要分布在距河6 km以内地区,6 km以外的聚落多分布在与... 详细信息

全新世大暖期结束后的干冷气候事件和环境恶化使西辽河流域及比邻地区的聚落向南移动集中并推动了原始农业的发展和之后畜牧业对原始农业的取代。各文化的聚落均对河流依赖性较强,主要分布在距河6 km以内地区,6 km以外的聚落多分布在与河流地势上相连的沟谷缓坡且主要集中在老哈河、教来河至大凌河流域,水文分析表明这些沟谷很可能在暖湿期形成过支流或季节河。聚落主要分布在海拔400～700 m的平原丘陵交互区,分布海拔和地形因气候波动和经济生活方式不同而有所变化。

关键词：聚落空间分布环境变化西辽河流域全新世中期

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明清时期大陆泽和宁晋泊的水陆变迁与水患治理

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首都师范大学学报（社会科学版） 2024年第4期 20-28页

作者：袁钰莹北京市社会科学院历史研究所

大陆泽与宁晋泊是河北平原南部诸河的汇水之区。明清时期,在气候环境变迁和人类活动的共同作用下,大陆泽与宁晋泊经历了从水域深广到干涸成陆的剧烈变迁,并频繁给周围的任县、宁晋、隆平等地造成严重水患。受灾各县修筑堤防、疏浚河道... 详细信息

大陆泽与宁晋泊是河北平原南部诸河的汇水之区。明清时期,在气候环境变迁和人类活动的共同作用下,大陆泽与宁晋泊经历了从水域深广到干涸成陆的剧烈变迁,并频繁给周围的任县、宁晋、隆平等地造成严重水患。受灾各县修筑堤防、疏浚河道以治理水患。受制于工程技术条件有限、治水资金不足、耕地紧张、上下游利益冲突、中央政策等因素,各县的措施虽能缓解水患,却始终无法从根本上解决问题。

关键词：大陆泽宁晋泊明清时期水患治理

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五代两宋荆湖地区商业城镇发展及其格局演变

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中国经济史研究 2022年第5期 41-52页

作者：袁钰莹清华大学人文学院历史系北京100084

五代两宋是荆湖地区商业起步和商业城镇发展的重要时期。五代特殊的政治格局给荆湖地区带来了发展商业的外部动力与条件,凭借与北方的茶叶贸易、作为南北往来主要内陆通道的区位优势和统治者的推动政策,长沙与江陵两城的商业有了大幅进... 详细信息

五代两宋是荆湖地区商业起步和商业城镇发展的重要时期。五代特殊的政治格局给荆湖地区带来了发展商业的外部动力与条件,凭借与北方的茶叶贸易、作为南北往来主要内陆通道的区位优势和统治者的推动政策,长沙与江陵两城的商业有了大幅进步。宋代随地区农业生产力持续提高和经济开发不断深化,荆湖与中原、江淮以及川蜀先后形成了较为密切的贸易联系。从五代到北宋再到南宋,该地区主要对外贸易方向从北向转为东—北向,而后又转为东—西向。长沙始终是湘江流域的商业中心,鄂州则在南宋取代江陵成为长江中游最大的商品集散枢纽。区域商业城镇以长江和湘江为轴,从散点状分布逐渐发展为东北密、西南疏的初级网络格局。这一演变过程体现出不同时代背景下,国家政治、军事、经济局势变动与区域商业发展的互动与呼应。

关键词：五代宋代荆湖地区商业城镇空间格局

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KINETIC STUDY OF CARBONYLATION OF METHANOL TO ACETIC ACID AND ACETIC ANHYDRIDE OVER A NOVEL COPOLYMER-BOUND CIS-DICARBONYLRHODIUM COMPLEX

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Chinese Journal of Polymer Science 1989年第3期7卷 225-231页

作者：陈予英袁国卿陈荣耀 Institute of Chemistry Academia Sinica Beijing

The kinetic study of carbonylation of methanol-acetic acid mixture to acetic acid and acetic anhydride over a cis-dicarbonylrhodium complex (MVM' Rh) coordinated with the ethylene diacrylate (M') crosslinked copolymer of methyl acrylate (M) and 2-vinylpyddine (V)shows that the rate of reaction is zero order with respect to both reactants methanol and carbon monoxide, but first order in the concentrations of promoter methyl iodide and rhodium in the complex. Polar solvents can accelerate the reaction. Activation parameters were calculated from the experimental results, being comparable to that of the homogeneous system. A mechanism similar to that of soluble rhodium catalyst was proposed.

关键词： Carbonylation of methanol Copolymer-bound cis-dicarbonylrhodium complex Kinetic study

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Genome-wide detection of additional fetal chromosomal abnormalities by cell-free DNA testing of 15,626 consecutive pregnant women

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Science China(Life Sciences) 2019年第2期62卷 215-224页

作者： Hong Yao Ya Gao Jia Zhao Rong Zhang Huixin Xu Huamei Hu Yanmei Luo yuying yuan Meili Fu Hongyun Zhang Hui Jiang Wei Wang Huanming Yang Jian Wang Zhiqing Liang Fang Chen Department of Gynecology & Obstetrics Southwest Hospital the Third Military Medical University BGI-Shenzhen China National GeneBank BGI-Shenzhen Birth Defect Screening Project Lab BGI-Shenzhen Clinical laboratories of BGI Health BGI-Shenzhen James D.Watson Institute of Genome Sciences Laboratory of Genomics and Molecular Biomedicine Department of Biology University of Copenhagen

Cell-free DNA(cfDNA) testing for common fetal trisomies(T21, T18, T13) is highly effective. However, the usefulness of cfDNA testing in detecting other chromosomal abnormalities is unclear. We evaluated the performance of cfDNA testing for genome-wide abnormalities, and analyzed the incremental yield by reporting extra abnormalities. We performed genome-wide cfDNA testing in 15,626 consecutive pregnancies prospectively enrolled in this study. cfDNA testing results were reported and counseling was given depending on the presence of extra chromosomal abnormalities. cfDNA testing identified 190 cases(1.2%)of chromosomal abnormalities including 100 common trisomies and 90 additional abnormalities. By expanding the cfDNA reporting range to genome-wide abnormalities, the false positive rate increased to 0.39%(P<0.001) and positive predictive value(PPV) was reduced to 65.58%(P=0.42). However, the detection yield increased from 0.44% to 0.65%(P=0.014), and cfDNA testing detected 38.61%(39/101) additional abnormalities with no ultrasound and biochemical screening findings. cfDNA testing outperformed biochemical screening by showing 60 times higher true positive rate and fewer false negative ***-wide cfDNA testing significantly increased the diagnostic yield by detecting extra abnormalities, especially those without diagnostic indications. Genome-wide cfDNA testing has fewer false positive and false negative results compared with biochemical screening.

关键词： cell-free DNA genome-wide chromosomal abnormalities sensitivity specificity PPV

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InfoEyes——为视觉障碍用户提供的虚拟参考咨询服务

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图书馆杂志 2006年第1期25卷 60-62,67页

作者：袁玉英中山大学资讯管理系广州510275

InfoEyes是美国伊利诺斯州立图书馆组织开展的专门为视觉障碍用户提供的联合虚拟参考咨询项目。本文介绍了这一项目的开展情况,并提出了几点建议。

关键词： InfoEyes 虚拟参考咨询视觉障碍用户残疾用户

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