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Efficient removal of Al(Ⅲ)and P507 from high concentration MgCl_(2)solution based on in-situ reaction strategy

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Transactions of Nonferrous Metals Society of china 2024年第9期34卷 3042-3053页

作者： Qiang WANG Meng WANG zong-yu FENG Yong-qi ZHANG Xiao-wei HUANG Xiang-xin XUE National Engineering Research Center for Rare Earth GRIREM Advanced Materials Co.Ltd.Beijing 100088China school of Metallurgy Northeastern UniversityShenyang 110819China General Research Institute for Nonferrous Metals Beijing 100088China GRIMAT Engineering Institute Co. Ltd.Beijing 101407China

For a highly efficient recycling of a wastewater containing a high concentration of MgCl_2,Al(Ⅲ)and P507 were scheduled to be removed in *** this study,the in-situ removal of Al(Ⅲ)and P507 from a high concentration MgCl_(2)solution at different pH values and Al/P molar ratios was *** results showed that P507 formed organic complexes of Al_x(OH)_y~(Z+)-P507 at pH of *** pH of 4.0-5.0,Al(Ⅲ)precipitated and transferred into Al(OH)_(3)with a flocculent amorphous *** sites on the Al(OH)_(3)surface enhanced the removal efficiency of *** pH of 6.0-6.5,Al(Ⅲ)and Mg(Ⅱ)formed layered crystalline Al(OH)_(3)and MgAl_2(OH)_(8with)small pore channels and fewer active sites,resulting in a reduced removal efficiency of *** the Al/P molar ratio exceeded 13 and the pH was between 4.0 and 5.0,the removal rates of both Al(Ⅲ)and P507 were higher than98%,while the concentration loss of Mg(Ⅱ)was only 0.2%-0.9%.

关键词： in-situ removal Al(III) P507 MgCl2 solution pH Al/P molar ratio

^(60)Co辐射对网织红细胞微观流变学特性的影响

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生物化学与生物物理进展 2004年第7期31卷 666-670页

作者：谢利德杨海杰张卫光孙大公文宗曜谭文长北京大学力学与工程科学系北京100871 承德体育运动学校承德067000 北京大学基础医学院物理教研室北京100083

采用 60 Co大剂量全身均匀急性辐射的方法 ,造成一种辐射贫血的动物模型 .以便在几天内连续研究 60 Co辐射对新生的网织红细胞及红细胞流变学特性的影响 .采用一种在低粘切变流场中能将红细胞变形指数DI分解为取向指数 (DI) or和小变形... 详细信息

采用 60 Co大剂量全身均匀急性辐射的方法 ,造成一种辐射贫血的动物模型 .以便在几天内连续研究 60 Co辐射对新生的网织红细胞及红细胞流变学特性的影响 .采用一种在低粘切变流场中能将红细胞变形指数DI分解为取向指数 (DI) or和小变形指数 (DI) d 的新型激光衍射法 ,对网织红细胞及红细胞的变形指数、取向指数、综合变形指数 (IDI)等血液流变学特性参数进行测量 ,发现在 60 Co大剂量辐射后 ,新生的网织红细胞及红细胞流变学特性存在明显异常 .将这种 60 Co辐射造成的贫血模型与文宗曜等提出的用抗体诱导的大量同步化的球形红细胞贫血模型相比较 ,后者更具有明显的优点 .同时为研究辐射对血液流变特性的影响及正确地挑选红细胞衰老模型提供了理论与实验的基础 .

关键词：新型激光衍射法网织红细胞微观流变特性变形指数取向指数

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中文医疗文本中的嵌套实体识别方法

软件学报 2024年第6期35卷 2923-2935页

作者：闫璟辉宗成庆徐金安北京交通大学计算机与信息工程学院北京100091 模式识别国家重点研究室(中国科学院自动化研究所) 北京100190

实体识别是信息抽取的关键技术.相较于普通文本,中文医疗文本的实体识别任务往往面对大量的嵌套实体.以往识别实体的方法往往忽视了医疗文本本身所特有的实体嵌套规则而直接采用序列标注方法,为此,提出一种融合实体嵌套规则的中文实体... 详细信息

实体识别是信息抽取的关键技术.相较于普通文本,中文医疗文本的实体识别任务往往面对大量的嵌套实体.以往识别实体的方法往往忽视了医疗文本本身所特有的实体嵌套规则而直接采用序列标注方法,为此,提出一种融合实体嵌套规则的中文实体识别方法.所提方法在训练过程中将实体的识别任务转化为实体的边界识别与边界首尾关系识别的联合训练任务,在解码过程中结合从实际医疗文本中所总结出来的实体嵌套规则对解码结果进行过滤,从而使得识别结果能够符合实际文本中内外层实体嵌套组合的组成规律.在公开的医疗文本实体识别的实验上取得良好的效果.数据集上的实验表明,所提方法在嵌套类型实体识别性能上显著优于已有的方法,在整体准确率方面比最先进的方法提高0.5%.

关键词：实体识别中文文本医疗领域嵌套实体识别边界识别

THREE-POINT BOUNDARY VALUE PROBLEM FOR p-LAPLACIAN DIFFERENTIAL EQUATION AT RESONANCE

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Annals of Differential Equations 2009年第2期25卷 249-252页

作者： Minggang zong (school of Finance and Economics,Jiangsu university,Zhenjiang 212013,Jiangsu) Wenyi Cai (school of Information,university of International Business and Economics,beijing 100029) school of Finance and Economics Jiangsu University Zhenjiang 212013 Jiangsu school of Information University of International Business and Economics Beijing 100029

By topological degree theory,the three-point boundary value problem for p-Laplacian differential equation at resonance is studied. Some new results on the existence of solutions are obtained,which improve and extend s... 详细信息

关键词： p-Laplacian differential equation three-point boundary value problem topological degree resonance

Beneficial Effects of Traditional Chinese Medicine Fuzheng Huayu on the Occurrence of Hepatocellular Carcinoma in Patients with Compensated Chronic Hepatitis B Cirrhosis Receiving Entecavir:A Multicenter Retrospective Cohort Study

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Journal of Clinical and Translational Hepatology 2024年第5期12卷 505-515页

作者： Haina Fan Shujuan Lei Zhimin Zhao Yan Huang Hui Wang Xudong Liu Xiaodong Li Min Xu Wei Zhang Kewei Sun Huichun Xing Yang Mei Jiaquan Huang Chuanwu Zhu Kejun Zhang Yali zong Xizhong Shen Qing Xie Chenghai Liu Institute of Liver Diseases Shanghai Key Laboratory of Traditional Chinese Clinical MedicineKey Laboratory of Liver and Kidney Diseases(Ministry of Education)Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghaiChina Department of Infectious Diseases Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghaiChina Department of Infectious Diseases Ruikang Hospital Affiliated to Guangxi University of Chinese MedicineNanningGuangxiChina Institute of Liver Diseases Hubei Provincial Hospital of Traditional Chinese MedicineWuhanHubeiChina Department of Infectious Diseases Huaian Fourth People’s HospitalHuai’anJiangsuChina Institute of Liver Diseases Shijiazhuang Fifth HospitalShijiazhuangHebeiChina Department of Liver Diseases The First Hospital of Hunan University of Chinese MedicineChangshaHunanChina Center of Hepatology Capital Medical University Affiliated Beijing Ditan HospitalBeijingChina Department of Hepatology The Fifth People’s Hospital of AnyangAnyangHenanChina Department and Institute of Infectious Disease Tongji Hospital of Tongji Medical College of Huazhong University of Science and TechnologyWuhanHubeiChina Department of Hepatology The Fifth People’s Hospital of SuzhouSuzhouJiangsuChina Department of Gastroenterology The First People’s Hospital of JingmenJingmenHubeiChina Department of Integrated Traditional and Western Medicine The Ninth Hospital of NanchangNanchangJiangxiChina Department of Gastroenterology Zhongshan HospitalFudan UniversityShanghaiChina

Background and Aims:The application of antifibrotic drugs to treat patients with chronic liver diseases who are receiving antiviral therapies for hepatocellular carcinoma(HCC)has not been ***,we aimed to assess the impact of the Traditional Chinese Medicine Fuzheng Huayu(FZHY)on the occurrence of HCC in patients with hepatitis B virus-related compensated cirrhosis receiving the antiviral drug entecavir(ETV).Methods:A multicenter retrospective cohort study was *** liver cirrhosis patients were divided into the ETV+FZHY group or the ETV group according to *** cumulative incidence of HCC was analyzed using Kaplan-Meier and log-rank *** score matching was used for confounding *** analysis and Cox regression were used to determine the effects of FZHY on the occurrence of HCC and liver function ***:Out of 910 chronic hepatitis B patients,458 were in the ETV+FZHY group and 452 were in the ETV *** propensity score matching,the 5-year cumulative incidence of HCC was 9.8%in the ETV+FZHY group and 21.8%in the ETV group(p36 ***,diabetes,alanine aminotransferase,􀇄-glutamyl transpeptidase,albumin,hepatitis B e-antigen,and fibrosis 4 score were associated with the occurrence of *** decreased the risk of HCC in patients aged>45 years with a hepatitis B virus DNA level of􀂕2,000 IU/***:Adjunctive FZHY treatment reduced HCC occurrence in patients with hepatitis B virus cirrhosis who were treated with ETV,possibly due to the antifibrotic properties of FZHY.

关键词： Entecavir Fuzheng Huayu Hepatitis B virus Cirrhosis Hepatocellular carcinoma Traditional Chinese Medicine

从乡村自给到公共财政保障--我国农村义务教育投入体制演变分析

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教育发展研究 2008年第23期28卷 43-47页

作者：宗晓华北京师范大学经济与工商管理学院博士研究生北京100875

我国典型的M型层级结构下,农村义务教育投入的分权体制与全国性公共产品属性之间存在尖锐的矛盾,导致近30年农村义务教育投入体制从乡村自给向公共财政保障的变迁。农村义务教育投入体制演变以预算内资金增加和财政负担主体上移为特征,... 详细信息

我国典型的M型层级结构下,农村义务教育投入的分权体制与全国性公共产品属性之间存在尖锐的矛盾,导致近30年农村义务教育投入体制从乡村自给向公共财政保障的变迁。农村义务教育投入体制演变以预算内资金增加和财政负担主体上移为特征,然而,中央政府介入程度的加深导致基层政府的预算约束软化,绩效损失不可避免。基于负担主体上移的收益与成本分析,目前可采取的策略是,在继续增加中央和省级政府投入的同时,逐步放弃"分项目、按比例"的转移支付方式,强化地方农村义务教育的预算约束。

关键词： M型层级结构农村义务教育投入体制

Gas microchannel plate-pixel detector for X-ray polarimetry

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Nuclear Science and Techniques 2024年第5期35卷 60-73页

作者： Huan-Bo Feng Hong-Bang Liu Dong Wang Zi-Li Li Shu-Lin Liu Qian Liu Hang-Zhou Li Bin-Long Wang Yan-Jun Xie zong-Wang Fan Hui Wang Ran Chen Di-Fan Yi Rui-Ting Ma Fei Xie Bo Peng Xiang-Ming Sun Jin Li En-Wei Liang Present Address:Guangxi Key Laboratory for Relativistic Astrophysics School of Physical Science and TechnologyGuangxi UniversityNanning 530004China PLAC Key Laboratory of Quark and Lepton Physics(MOE)Central China Normal UniversityWuhan 430079China school of Science Huzhou UniversityHuzhou 313000China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China school of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China school of Physical Science University of Chinese Academy of SciencesBeijing 100049China The 13th Research Institute of china Electronics Technology Group Corporation Shijiazhuang 050057China

POLAR-2 is a gamma-ray burst(GRB)polarimeter that is designed to study the polarization in GRB radiation emissions,aiming to improve our knowledge of related ***-2 is expected to utilize an on-board polarimeter that is sensitive to soft X-rays(2-10 keV),called low-energy polarization *** have developed a new soft X-ray polari-zation detector prototype based on gas microchannel plates(GMCPs)and pixel chips(Topmetal).The GMCPs have bulk resistance,which prevents charging-up effects and ensures gain stability during *** detector is composed of low outgassing materials and is gas-sealed using a laser welding technique,ensuring long-term stability.A modulation factor of 41.28%±0.64% is obtained for a 4.5 keV polarized X-ray beam.A residual modulation of 1.96%±0.58% at 5.9 keV is observed for the entire sensitive area.

关键词： X-ray polarimetry Gas microchannel plate-pixel detector Gamma-ray bursts

Effects and mechanisms of store-operated calcium channel blockade on hepatic ischemia-reperfusion injury in rats

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World Journal of Gastroenterology 2012年第4期18卷 356-367页

作者： Li-Jie Pan,Zi-Chao Zhang,Zhen-Ya Zhang,zong-Ming Zhang,Department of General Surgery,Digestive Medical Center,The First Affiliated Hospital,school of Medicine,Tsinghua university,beijing 100016,china Wen-Jun Wang,Yue Xu,Xuyue (beijing) Science and Technology Co.,Ltd.,Haidian District,beijing 100080,china Li-Jie Pan Zi-Chao Zhang Zhen-Ya Zhang Zong-Ming Zhang Department of General Surgery Digestive Medical Center The First Affiliated Hospital School of Medicine Tsinghua University Beijing 100016 China Wen-Jun Wang Yue Xu Xuyue (Beijing) Science and Technology Co. Ltd. Haidian District Beijing 100080 China

AIM:To further investigate the important role of store-operated calcium channels (SOCs) in rat hepatocytes and to explore the effects of SOC blockers on hepatic ischemia-reperfusion injury (HIRI).METHODS:Using freshly isolated hepatocytes from a rat model of HIRI (and controls),we measured cyto-solic free Ca 2+ concentration (by calcium imaging),net Ca 2+ fluxes (by a non-invasive micro-test technique),the SOC current (I SOC ;by whole-cell patch-clamp record-ing),and taurocholate secretion [by high-performance liquid chromatography and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assays].RESULTS:Ca 2+ oscillations and net Ca 2+ fluxes medi-ated by Ca 2+ entry via SOCs were observed in rat he-patocytes.I SOC was significantly higher in HIRI groups than in controls (57.0 ± 7.5 pA vs 31.6 ± 2.7 pA,P <0.05) and was inhibited by La 3+.Taurocholate secretion by hepatocytes into culture supernatant was distinctly lower in HIRI hepatocytes than in controls,an effect reversed by SOC ***:SOCs are pivotal in *** blockers protected against HIRI and assisted the recovery of se-cretory function in ***,they are likely to become a novel class of effective drugs for prevention or therapy of HIRI patients in the future.

关键词： Hepatocyte Hepatic ischemia-reperfusion injury Store-operated calcium channel Non-invasive micro-test technique

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基于色彩矩的无监督多分辨率图像分割

铁道学报 2002年第5期24卷 67-71页

作者：邢强袁保宗北方交通大学计算机与信息技术学院北京100044

无监督的图像分割被广泛的应用于各种不同的条件下,包括数字相机的图像增强,目标识别,基于内容的图像检索和三维图像分析。本文提出了一种新的多分辨率图像分割方法。与其他基于颜色的全局优化分割方法比较,该方法基于人的视觉系统原理... 详细信息

无监督的图像分割被广泛的应用于各种不同的条件下,包括数字相机的图像增强,目标识别,基于内容的图像检索和三维图像分析。本文提出了一种新的多分辨率图像分割方法。与其他基于颜色的全局优化分割方法比较,该方法基于人的视觉系统原理,能够将感兴趣的物体从背景中分割出来,同时图像分割是一个多分辨率的分割过程。首先算法在整幅图像中搜索代表物体的特征块,然后利用特征块的色彩矩特征对所有图像块进行聚类,最后对属于物体类的图像块进行高分辨率的分类,直到块中的每一个像素点被区分为背景或物体。实验结果表明,与传统方法相比,本文算法能够在较短的时间内,取得较好的分割效果。

关键词：色彩矩无监督多分辨率图像分割图像检索图像分割图像分析计算机视觉