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Chemical and Isotopic Characteristics of the Water and Suspended Particulate Materials in the Yangtze River and Their Geological and Environmental Implications

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Acta Geologica Sinica(English Edition) 2014年第1期88卷 276-360页

作者： DING Tiping GAO Jianfei TIAN Shihong SHI Guoyu CHEN Feng WANG chengyu LUO Xurong HAN Dan MLR Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral Resources CAGS Open Research Laboratory of Isotope Geology Hydrological Bureau CWRC

The chemical and isotopic characteristics of the water and suspended particulate materials（SPM） in the Yangtze River were investigated on the samples collected from 25 hydrological monitoring stations in the mainsteam and 13 hydrological monitoring stations in the major tributaries during 2003 to 2007. The water samples show a large variation in both δD（ 30‰ to 112‰） and δ18O（ 3.8‰ to 15.4‰） values. Both δD and δ18O values show a decrease from the river head to the Jinsha Jiang section and then increase downstream to the river mouth. It is found that the oxygen and hydrogen isotopic compositions of the Yangtze water are controlled by meteoric precipitation, evaporation, ice（and snow） melting and dam building. The Yangtze SPM concentrations show a large variation and are well corresponded to the spatial and temporal changes of flow speed, runoff and SPM supply, which are affected by the slope of the river bed, local precipitation rate, weathering intensity, erosion condition and anthropogenic activity. The Yangtze SPM consists of clay minerals, clastic silicate and carbonate minerals, heavy minerals, iron hydroxide and organic compounds. From the upper to lower reaches, the clay and clastic silicate components in SPM increase gradually, but the carbonate components decrease gradually, which may reflect changes of climate and weathering intensity in the drainage area. Compared to those of the upper crust rocks, the Yangtze SPM has lower contents of SiO2, cao, K2 O and Na2 O and higher contents of TFe2 O3 and trace metals of Co, Ni, Cu, Zn, Pb and Cd. The ΣREE in the Yangtze SPM is also slightly higher than that of the upper crust. From the upper to lower reaches, the cao and MgO contents in SPM decrease gradually, but the SiO2 content increases gradually, corresponding to the increase of clay minerals and decrease of the carbonates. The δ30SiSPM values（ 1.1‰ to 0.3‰） of the Yangtze SPM are similar to those of the average shale, but lower than those of the granite rock

关键词： Yangtze River stable isotopes water chemistry Suspended Particulate Materials(SPM) hydrology environmental implication

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Chemical and Isotopic Characters of the Water and Suspended Particulate Materials in the Yellow River and Their Geological and Environmental Implications

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Acta Geologica Sinica(English Edition) 2016年第1期90卷 285-351页

作者： DING Tiping GAO Jianfei TIAN Shihong WANG Huaibai LI Ming WANG chengyu LUO Xurong HANG Dan MLR Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesCAGSBeijing 100037China MLR Key Laboratory of Isotope Geology CAGSBeijing 100037China Hydrological Bureau YRCCZhengzhou 450004China

The chemical and isotopic characteristics of the water and suspended particulate materials （SPM） in the Yellow River were investigated on the samples collected from 29 hydrological monitoring stations in the mainstem and several major tributaries during 2004 to 2007. The JD and δ^18O values of the Yellow River water vary in large ranges from -32%0 to -91‰ and from -3.1‰ to -12.5‰, respectively. The characters of H and O isotope variations indicate that the major sources of the Yellow River water are meteoric water and snow melting water, and water cycle in the Yellow River basin is affected strongly by evaporation process and human activity. The average SPM content （9.635 g/L） of the Yellow River is the highest among the world large rivers. Compared with the Yangtze River, the Yellow River SPM has much lower clay content and significantly higher contents of clastic silicates and carbonates. In comparison to the upper crust rocks, the Yellow River SPM contains less SiO2, cao, K2O and Na2O, but more TFe203, Co, Ni, Cu, Zn, Pb and Cd. The abnormal high Cd contents found in some sample may be related to local industrial activity. The REE contents and distribution pattern of the Yellow River SPM are very close to the average value of the global shale. The average δ^30Sisp in the Yellow River （-0.11‰） is slightly higher than the average value （-0.22‰） of the Yangtze River SPM. The major factors controlling the δ^30Si SPM of the Yellow River are the soil supply, the isotopic composition of the soil and the climate conditions. The TDS in the Yellow River are the highest among those of world large rivers. Fair correlations are observed among Cl, Na^＋, K^＋, and Mg^2＋ contents of the Yellow River water, indicating the effect of evaporation. The Ca^2＋ and Sr^2＋ concentrations show good correlation to the SO42 concentration rather than HCO3-concentration, reflecting its origin from evaporates. The NO3-contents are affected by farmland fertilization. The Cu, Zn and Cd contents in

关键词： Yellow River stable isotopes water chemistry suspended particulate materials (SPM) hydrology environmental implication

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小型风力机翼羽仿生耦合桨叶结构研究

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农业机械学报 2014年第6期45卷 212-215页

作者：高艺徐成宇曹国华长春理工大学机电工程学院长春130022

针对小型风力发电机叶片径向气流利用率低的问题,采用仿生耦合技术,对长耳鸮翼羽结构加以研究。利用3D Scanner激光扫描仪系统逆向重构了鸮的翼羽结构,建立了仿生耦合桨叶结构模型,通过对NACA 0015基准翼型和仿生翼型进行对比计算,发现... 详细信息

针对小型风力发电机叶片径向气流利用率低的问题,采用仿生耦合技术,对长耳鸮翼羽结构加以研究。利用3D Scanner激光扫描仪系统逆向重构了鸮的翼羽结构,建立了仿生耦合桨叶结构模型,通过对NACA 0015基准翼型和仿生翼型进行对比计算,发现仿生翼型的升力随着节距与弦长比值s/c的减小而增加,当仿生耦合翼型节距与弦长比值s/c=0.33时,失速攻角达到16°,最大升力系数约为1.26,比基准翼型高13.5%。

关键词：小型风力发电机桨叶仿生耦合翼型

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Elevated plasma levels of selective cytokines in COVID-19 patients reflect viral load and lung injury

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National Science Review 2020年第6期7卷 1003-1011页

作者： Yingxia Liu Cong Zhang Fengming Huang Yang Yang Fuxiang Wang Jing Yuan Zheng Zhang Yuhao Qin Xiaoyun Li DANDan Zhao Shunwang Li Shuguang Tan Zhaoqin Wang Jinxiu Li Chenguang Shen Jianming Li Ling Peng Weibo Wu Mengli cao Li Xing Zhixiang Xu Li Chen Congzhao Zhou William J Liu Lei Liu chengyu Jiang Shenzhen Key Laboratory of Pathogen and Immunity National Clinical Research Center for Infectious Disease State Key Discipline of Infectious Disease Shenzhen Third People's Hospital Second Hospital Affiliated to Southern University of Science and Technology Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences University of Science and Technology of China The State Key Laboratory of Medical Molecular Biology Institute of Basic Medical Sciences Chinese Academy of Medical Sciences Department of Biochemistry Peking Union Medical College The NHC Key Laboratory of Biosafety National Institute for Viral Disease Control and PreventionChina CDC The NHC Key Laboratory of Biosafety National Institute for Viral Disease Control and Prevention China CDC

A recent outbreak of pneumonia in Wuhan, China was found to be caused by a 2019 novel coronavirus(2019-nCoV or SARS-CoV-2 or HCoV-19). We previously reported the clinical features of 12 patients with2019-n Co V infections in Shenzhen, China. To further understand the pathogenesis of COVID-19 and find better ways to monitor and treat the disease caused by 2019-n Co V, we measured the levels of 48 cytokines in the blood plasma of those 12 COVID-19 patients. Thirty-eight out of the 48 measured cytokines in the plasma of 2019-n Co V-infected patients were significantly elevated compared to healthy *** cytokines were linked to 2019-nCoV loads. Fifteen cytokines, namely M-CSF, IL-10, IFN-α2,IL-17, IL-4, IP-10, IL-7, IL-1 ra, G-CSF, IL-12, IFN-γ, IL-1α, IL-2, HGF and PDGF-BB, were strongly associated with the lung-injury Murray score and could be used to predict the disease severity of2019-n Co V infections by calculating the area under the curve of the receiver-operating characteristics. Our results suggest that 2019-nCoV infections trigger extensive changes in a wide array of cytokines, some of which could be potential biomarkers of disease severity of 2019-n Co V infections. These findings will likely improve our understanding of the immunopathologic mechanisms of this emerging disease. Our results also suggest that modulators of cytokine responses may play a therapeutic role in combating the disease once the functions of these elevated cytokines have been characterized.

关键词： 2019-nCoV COVID-19 cytokine storm IP-10 IL-17

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轴–径向磁通全超导同步电动机的磁场分析

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中国电机工程学报 2011年第12期31卷 96-101页

作者：李伟力宋成宇李立毅曹君慈曹继伟哈尔滨理工大学电气与电子工程学院黑龙江省哈尔滨市150080 哈尔滨工业大学电气工程系黑龙江省哈尔滨市150001

为了简化传统超导电机的低温冷却系统,提出一种新型轴–径向磁通全超导同步电动机,分析该电机的结构特点和工作原理。利用三维有限元法计算了电机的空载磁场分布,对不同轴向超导励磁绕组下的磁场以及轴向磁路对径向磁路的影响进行分析,... 详细信息

为了简化传统超导电机的低温冷却系统,提出一种新型轴–径向磁通全超导同步电动机,分析该电机的结构特点和工作原理。利用三维有限元法计算了电机的空载磁场分布,对不同轴向超导励磁绕组下的磁场以及轴向磁路对径向磁路的影响进行分析,分析结果通过空载反电动势实验得到了验证。在样机结构基础上,提出一种新型转子结构方案,分析了2种转子结构下的气隙磁场,并对气隙磁密的谐波含量进行了比较,得出一些有益的结论,为该新型大容量电动机的优化设计和性能分析提供参考。

关键词：高温超导电磁场轴向磁路径向磁路三维有限元

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Comparison of simple discectomy and instrumented posterior lumbar interbody fusion for treatment of lumbar disc herniation combined with Modic endplate changes

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Chinese Medical Journal 2014年第15期127卷 2789-2794页

作者： cao Peng Chen Zhe Zheng Yuehuan Wang Yuren Jiang Leisheng Yang Yaoqi Zhuang chengyu Liang Yu Zheng Tao Gong Yaocheng Zhang Xingkai Wu Wenjian Qiu Shijing Department of Orthopaedics Ruijin Hospital School of Medicine Jiao Tong University and Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases with Integrated Chinese- Western Medicine Shanghai Institute of Traumatology and Orthopaedics Shanghai 200025 China Shanghai Institute of Traumatology and Orthopaedics Shanghai200025 China Department of Orthopaedics Xinhua Hospital School of MedicineJiao Tong University Shanghai 200092 China

Background The purpose of this retrospective study was to compare the surgical outcomes of simple discectomy and instrumented posterior lumbar interbody fusion （iPLIF） in patients with lumbar disc herniation and Modic endplate *** hypothesis was that iPLIF could provide better outcome for patients with refractory lumbar disc herniation and Modic changes （LDH-MC）.Methods Ninety-one patients with single-segment LDH-MC were *** patients experienced low back pain as well as radicular leg pain,and low back pain was more severe than leg ***-seven patients were treated with discectomy and 44 were treated with iPLIE The outcomes of both low back pain and radicular leg pain using visual analogue scale （VAS） as well as the clinical outcome related to low back pain using Japanese Orthopaedic Association （JOA） score were assessed before and 18 months after surgery,*** Both low back and leg pain were significantly improved 18 months after simple discectomy and iPLIE Compared to patients undergoing simple discectomy,low back pain was significantly reduced in patients undergoing iPLIE but there was no significant difference in leg pain between two *** fusion was achieved in all patients who underwent *** In patients with LDH-MC,iPLIF can yield significantly superior outcome on the relief of low back pain compared to simple *** discectomy can relieve radicular leg pain as efficient as iPLIE Accordingly,iPLIF seems to be a reliable treatment for patients with LDH-MC and predominant low back pain.

关键词： lumbar disc herniation modic changes discectomy, instrumented posterior lumbar interbody fusion low back pain

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Synthesis of Xonotlite and Effects of Ceramic Fiber Addition on Its Compressive Strength

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China's Refractories 2019年第1期28卷 41-45页

作者： WANG chengyu YUE Hongzhi GUO Yanling State Key Laboratory of Advanced Special Steel Shanghai University School of Materials Science and Engineering Shandong University of Technology

In order to improve the compressive strength of xonotlite, the pretreated quartz powder, slaked cao, additive, deionized water(water-solid ratio of 30) were placed in a magnetically stirred autoclave, and the corresponding products were obtained after incubating at 220 ℃ for 0, 1, 3 and 6 h, respectively to explore the synthetic process of xonotlite. In the prepared xonotlite powder, 0, 5%, 10%, 15% and 20%(by mass, the same hereinafter) of pre-treated ceramic staple fibers were added, and two sets of specimen with the specifications of φ50 mm×35 mm were molded by pressed *** set of specimens were not sintered, and the other group was fired at 1 000 ℃ for 2 h to explore the effect of ceramic fiber addition on the compressive strength before and after sintering of xonotlite. The results show that C-S-H gel is first synthesized in the synthesis of xonotlite, and then the C-S-H gel is transformed to form tobermlite, at last tobermlite fully reacts to produce xonotlite. The addition of ceramic fiber enhances the compressive strength of the xonotlite before and after sintering. When the 15% ceramic fiber is added, the compressive strength is the highest. The specimens before and after the high temperature firing contain xonotlite phase and calcium silicate phase, respectively, and the compressive strength of the fired specimens is higher than that of the green ones.

关键词： xonotlite synthetic process ceramic fiber high temperature sintering compressive strength

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基于AT89C52的监控系统设计

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电气自动化 2007年第6期29卷 49-51页

作者：曹智文黄成玉华北科技学院电信系北京101601

介绍了基于 AT89C52单片机的监控系统的构成,重点讨论了16C550芯片在通信系统中的应用,RS232/485串口标准通讯电路的设计方法。

关键词：监控系统串口通信 UART RS232/485

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A comprehensive analysis of the Bencao(herbal)small RNA Atlas reveals novel RNA therapeutics for treating human diseases

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Science China(Life Sciences) 2023年第10期66卷 2380-2398页

作者： Yinghao cao Yexuan Lin Na Sun Xinyi Du Yixin Dong Song Mei Xingyu Deng Xiaobei Li Shaoting Guo Kegong Tang Jiaqi Liu Xiangyu Qiao Dandan Zhao Yuhao Qin Cong Zhang Tianyi Xin Xiaohu Shi Congzhao Zhou Tao Dong De-an Guo Benedikt MKessler Dong Xu Jingyuan Song Fengming Huang Xiaoyue Wang chengyu Jiang State Key Laboratory of Common Mechanism Research for Major Diseases Department of BiochemistryInstitute of Basic Medical Sciences Chinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijing 100005China Key Laboratory of Chinese Medicine Resources Conservation State Administration of Traditional Chinese Medicine of ChinaEngineering Research Center of Chinese Medicine Resource of Ministry of EducationInstitute of Medicinal Plant DevelopmentChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100193China Department of Traditional Chinese Medicine Peking Union Medical College HospitalChinese Academy of Medical SciencesBeijing 100005China Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences University of Science and Technology of ChinaHefei 230027China MRC Human Immunology Unit MRC Weatherall Institute of Molecular MedicineRadcliffe Department of MedicineUniversity of OxfordOxford OX37FZUK Chinese Academy of Medical Sciences(CAMS) CAMS Oxford Institute(COI)Nuffield Department of MedicineUniversity of OxfordOxfordOX37FZUK Shanghai Research Center for Modernization of Traditional Chinese Medicine National Engineering Laboratory for TCM Standardization TechnologyShanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China Target Discovery Institute Centre for Medicines DiscoveryNuffield Department of MedicineUniversity of OxfordOxfordOX37FZUK Department of Electrical Engineering and Computer Science and Christopher S.Bond Life Sciences CenterUniversity of MissouriColumbia MO 65211USA

Cross-kingdom herbal mi RNA was first reported in *** a modified herbal extraction protocol,we obtained 73,677,287sequences by RNA-seq from 245 traditional Chinese Medicine(TCM),of which 20,758,257 were unique *** constructed a Bencao(herbal)small RNA(s RNA)Atlas(http://***),annotated the sequences by sequence-based clustering,and created a nomenclature system for Bencao s *** profiles of 21,757 mi RNAs in the Atlas were highly consistent with those of plant mi RNAs in mi *** software tools,our results demonstrated that all human genes might be regulated by s RNAs from the Bencao s RNA Atlas,part of the predicted human target genes were experimentally validated,suggesting that Bencao s RNAs might be one of the main bioactive components of herbal *** established roadmaps for oligonucleotide drugs development and optimization of TCM ***,the decoctosome,a lipo-nano particle consisting of 0.5%–2.5%of the decoction,demonstrated potent medical *** propose a Bencao(herbal)Index,including small-molecule compounds(SM),protein peptides(P),nucleic acid(N),non-nucleic and non-proteinogenic large-molecule compounds(LM)and elements from Mendeleev's periodic table(E),to quantitatively measure the medical effects of botanic *** Bencao s RNA Atlas is a resource for developing gene-targeting oligonucleotide drugs and optimizing botanical medicine,and may provide potential remedies for the theory and practice of one medicine.

关键词： small RNA herbal decoction cross-kingdom regulation traditional Chinese medicine RNA oligonucleotide drug RNA therapeutics Bencao small RNA Atlas

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融合心电与表面肌电特征的下肢康复疲劳估计方法

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生物医学工程学杂志 2020年第6期37卷 1056-1064页

作者：苑尧尧曹佃国李聪刘澄玉曲阜师范大学工学院山东日照276826 东南大学仪器科学与工程学院南京210096

疲劳估计在下肢康复训练过程中对提高意图识别精度、避免二次伤害有重要意义。现有方法多是仅利用表面肌电信号(sEMG)特征进行疲劳估计,未考虑加入蕴含疲劳状态信息的心电信号(ECG)特征,识别率较低且不稳定。针对此问题,提出了一种将ECG... 详细信息

疲劳估计在下肢康复训练过程中对提高意图识别精度、避免二次伤害有重要意义。现有方法多是仅利用表面肌电信号(sEMG)特征进行疲劳估计,未考虑加入蕴含疲劳状态信息的心电信号(ECG)特征,识别率较低且不稳定。针对此问题,提出了一种将ECG与sEMG特征融合用于下肢康复疲劳估计的方法,设计改进的粒子群优化-支持向量机分类器,对融合特征向量进行识别,实现对轻松、过渡和疲累三种不同疲劳状态的准确识别,最终三种状态识别率分别为98.5%、93.5%、95.5%。经实验证明,该方法的平均识别率与只依靠sEMG特征相比提高了4.50%,比未经特征融合的ECG、sEMG组合特征提高了13.66%,证明将ECG与sEMG进行特征融合可以实现下肢康复疲劳的准确检测。

关键词：下肢疲劳估计心电信号表面肌电信号特征融合改进的粒子群优化-支持向量机

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