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Simultaneous removal of Cr(Ⅵ), Cd, and Pb from aqueous solution by iron sulfide nanoparticles: Influencing factors and interactions of metals

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Chinese Journal of Chemical Engineering 2021年第12期34卷 245-255页

作者： Qingrong Zou wanyu wang Tong Zhang Yuanyuan Liu State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing UniversityChongqing 400044China Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment of Ministry of Education Chongqing UniversityChongqing 400044China Central-Southern Safety&Environment Technology Institute Co. LtdWuhan 430061China

Cadmium(Cd),lead(Pb),and hexavalent chromium(Cr(Ⅵ)) are often found in soils and water affected by metal smelting,chemical manufacturing,and *** this study,synthetic iron sulfide nanoparticles(FeS NPs) were stabilized with carboxymethyl cellulose(CMC) and utilized to remove Cr(Ⅵ),Cd,and Pb from an aqueous *** experiments,a Visual MINTEQ model,scanning electron microscopy(SEM),X-ray diffraction(XRD),and X-ray photoelectron spectrometer(XPS) analysis were used to determine the removal efficiencies,influencing factors,and *** FeS NP suspension simultaneously removed Cr(Ⅵ),Cd,and Pb from an aqueous *** concentrations of Cr(Ⅵ),Cd,and Pb decreased from 50,10,and 50 mg·L^(-1) to 2.5,0.1,and 0.1 mg·L^(-1),*** removal capacities were up to 418,96,and 585 mg per gram of stabilized FeS NPs,*** acidic conditions significantly favored the removal of aqueous Cr(Ⅵ) while the alkaline conditions favored the removal of Cd and *** slightly inhibited the removal of Cr(Ⅵ),but it had no significant influence on the removal of Cd and Pb.A potential mechanism was proposed for the simultaneous removal of Cr(Ⅵ),Cd,and Pb using FeS *** interactions of the three heavy metals involved a cationic bridging effect on Cr(Ⅵ) by Cd,an enhanced adsorption effect on Cd by [Cr,Fe](OH)_3,precipitation of PbCrO_4,and transformation of PbCrO_4 to ***,FeS NPs have a high potential for use in the simultaneous removal of Cr(Ⅵ),Cd,and Pb from contaminated aqueous solutions.

关键词： Iron sulfide Nanoparticles Multi-heavy metal contamination Simultaneous removal Environment Remediation

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Seismic attenuation compensation with spectral-shaping regularization

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Earth and Planetary Physics 2022年第3期6卷 259-274页

作者： QiZhen Du wanyu wang WenHan Sun Li-Yun Fu Shandong Provincial Key Laboratory of Deep Oil&Gas China University of Petroleum(East China)Qingdao 266580China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Key Laboratory of Geophysical Prospecting China National Petroleum Corporation(CNPC)China University of Petroleum(East China)Qingdao 266580China Department of Physics University of AlbertaEdmontonABT6G 2EICanada

Because of the viscoelasticity of the subsurface medium,seismic waves will inherently attenuate during propagation,which lowers the resolution of the acquired seismic ***-Q filtering,as a typical approach to compensating for seismic attenuation,can efficiently recover high-resolution seismic data from *** most efforts are focused on compensating for highfrequency energy and improving the stability of amplitude compensation by inverse-Q filtering,low-frequency leakage may occur as the high-frequency component is *** this article,we propose a compensation scheme that promotes the preservation of lowfrequency energy in the seismic *** constructed an adaptive shaping operator based on spectral-shaping regularization by tailoring the frequency spectra of the seismic *** then performed inverse-Q filtering in an inversion *** data-driven shaping operator can regularize and balance the spectral-energy distribution for the compensated records and can maintain the low-frequency ratio by constraining the overcompensation for high-frequency *** tests and applications on prestack common-reflectionpoint gathers indicated that the proposed method can preserve the relative energy of low-frequency components while fulfilling stable high-frequency compensation.

关键词： seismic attenuation compensation spectral-shaping regularization data-driven shaping operator offset-related inverse-Q filter

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The cell cycle inhibitor P21 promotes the development of pulmonary fibrosis by suppressing lung alveolar regeneration

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Acta Pharmaceutica Sinica B 2022年第2期12卷 735-746页

作者： Xiaoxi Lv Chang Liu Shanshan Liu Yunxuan Li wanyu wang Ke Li Fang Hua Bing Cui Xiaowei Zhang Jiaojiao Yu Jinmei Yu ZhuoWei Hu Immunology and Cancer Pharmacology Group State Key Laboratory of Bioactive Substance and Function of Natural MedicinesInstitute of Materia MedicaChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100050China Drug Clinical Trial Institution Children’s HospitalCapital Institute of PediatricsBeijing 100020China Institute of Medicinal Biotechnology Chinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100050China

The cell cycle inhibitor P21 has been implicated in cell senescence and plays an important role in the injury-repair process following lung *** fibrosis(PF)is a fibrotic lung disorder characterized by cell senescence in lung alveolar epithelial *** this study,we report that P21 expression was increased in alveolar epithelial type 2 cells(AEC2 s)in a time-dependent manner following multiple bleomycin-induced *** injury of AEC2 s resulted in telomere shortening and triggered P21-dependent cell ***2 s with elevated expression of P21 lost their self-renewal and differentiation *** particular,elevated P21 not only induced cell cycle arrest in AEC2 s but also bound to P300 andβ-catenin and inhibited AEC2 differentiation by disturbing the P300-β-catenin ***,senescent AEC2 s triggered myofibroblast activation by releasing profibrotic *** of P21 restored AEC2-mediated lung alveolar regeneration in mice with chronic *** results of our study reveal a mechanism of P21-mediated lung regeneration failure during PF development,which suggests a potential strategy for the treatment of fibrotic lung diseases.

关键词： P21 Cell senescence Alveolar epithelial type 2 cells Pulmonary fibrosis Alveolar regeneration Bleomycin Cell cycle arrest P300-β-catenin complex

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Riparian plant community structure and assembly processes differed by variations in riverbank curvatures:implications for restoring habitats along the Three Gorges Reservoir

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Journal of Plant Ecology 2024年第5期17卷 189-204页

作者： Xiaohong Li Jinxia Huang Zuncheng Bai Hang Zou wanyu wang wanyu Qi Maohua Ma Research Center of Applied Geology of China Geological Survey Sichuan 610036China Chongqing Institute of Green and Intelligent Technology Chinese Academy of SciencesChongqing 400714China University of Chinese Academy of Sciences Beijing 100049China

A meandering riverbank plays a vital role in maintaining natural river ecosystems,providing habitats for riparian ***,dams have significantly altered riverbank *** restore the riparian ecosystems,it is imperative to understand how different riverbank curvatures influence *** study aims to uncover the ecological impacts of riverbank curvature on the structure and assembly process of plant communities in the riparian zone of the Yangtze River,regulated by the Three Gorges Dam(TGD)in *** categorized the riparian zones into four types:cove,lobe,wavy and linear *** documented the composition and diversity of riparian plant *** findings revealed that wavy and cove riverbanks exhibited greater species diversity(with Shannon–Wiener diversity index values 1.5×higher)compared to communities along linear ***,the analysis of functional traits indicated that wavy riverbanks promoted the differentiation of plant functional traits,thus enhancing ecosystem functions,with functional dispersion index(FDis)values 1.3 times higher than those of linear *** variations in the assembly of riparian communities were also observed among different riverbanks,with standardized effect size(SES)values indicating a higher degree of niche differentiation in cove riverbanks(SES=0.4)compared to linear riverbanks(SES=–0.6).These results highlight the ecological importance of diverse riverbank curvatures in influencing the diversity,structure and assembly of riparian communities along the *** summary,this study underscores the necessity of maintaining or restoring various natural morphological curvatures when rehabilitating riparian communities along rivers impacted by human activities.

关键词： riverbank curvature habitat heterogeneity taxonomic diversity functional diversity community assembly

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A hypothesis of 3D rainfall tomography using satellite signals

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Journal of Communications and Information Networks 2016年第1期1卷 134-142页

作者： HUANG Defeng(David) XU Lu FENG Xuxiang wang wanyu The University of Western Australia WA 6009Australia Institute of Remote Sensing and Digital Earth Chinese Academy of SciencesBeijing 100094China

The attenuation of microwave signals due to rainfall,known as rain attenuation,can be used to measure *** to using X-ray to carry out human-body CT scans,the microwave signals of low earth and/or medium earth orbit satellites are proposed for carrying out 3D(Three Dimensional)rainfall tomography in this *** proposed method will not only complement the three major rain measurement methods in use today(*** gauge,weather radar,and weather satellite)but also potentially achieve 3D rainfall measurements with precision and coverage unachievable *** with the deployment of low earth orbit satellite constellations(*** OneWeb constellation)for global broadband Internet services,small satellite receivers of the size of a pizza box may be used to achieve 3D rainfall tomography anywhere on the Earth,thereby paving the way for many practical applications and atmospheric research that are associated with rainfall.

关键词： satellite communications computerized tomography rain measurement

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A combination strategy of DOX and VEGFR-2 targeted inhibitor based on nanomicelle for enhancing lymphoma therapy

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Chinese Chemical Letters 2024年第12期35卷 288-292页

作者： Shuheng Zhang Yuanyuan Zhang wanyu wang Yuzhu Hu Xinchuan Chen Bilan wang Xiang Gao Department of Pharmacy West China Second University Hospital of Sichuan University School of Basic Medical Sciences Henan University Key Laboratory of Drug Targeting and Drug Delivery Systems Ministry of Education West China School of Pharmacy Sichuan University State Key Laboratory of Biotherapy and Cancer Center West China Hospital West China Medical School Sichuan University and Collaborative Innovation Center for Biotherapy Department of Hematology Institute of Hematology State Key Laboratory of Biotherapy and Cancer Center West China Hospital Sichuan University Evidence-Based Pharmacy Center West China Second University Hospital Sichuan University Key Laboratory of Birth Defects and Related Diseases of Women and Children Ministry of Education West China Second University Hospital Sichuan University

Lymphoma is a hematological malignancy with an increasing mortality rate. Nevertheless, the treatment strategy against lymphoma remains limited. Doxorubicin(DOX) is a broad-spectrum anti-tumor chemotherapeutic drug, the clinical application of which is limited by serious adverse effects and drug resistance. In this work, biodegradable methoxy poly(ethylene glycol)-block-poly(lactic acid)(mPEG-PLA)nanomicelles co-delivering of DOX and apatinib(AP)(DOX-AP/m) was developed for lymphoma *** average particle size of the self-assembled drug-loaded nano-micelle was 31.94 nm. It is revealed that AP can enhance the uptake of DOX by tumor cells. The in vivo and in vitro experimental results revealed that DOX-AP/m combination therapy could inhibit proliferation and promote apoptosis of lymphoma cells,and greatly suppress tumor growth. Our study indicated that DOX-AP/m might provide new insight and hold great potential in the treatment of lymphoma.

关键词： Doxorubicin Apatinib Lymphoma Nanomicelle Drug delivery system

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2-连通图的修正的彩虹顶点连通数

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陕西师范大学学报（自然科学版） 2017年第6期45卷 19-21页

作者：王万禹成都师范学院数学学院四川成都611130

路P称为修正的顶点彩虹路,如果P中所有的顶点着不同的颜色或者除端点外其余顶点着不同于端点的颜色。图G称为是修正的彩虹顶点连通的,如果对于G的任意两个顶点u和v,G都有一条修正的彩虹顶点u-v路。使图G是修正的彩虹顶点连通图的最小颜... 详细信息

路P称为修正的顶点彩虹路,如果P中所有的顶点着不同的颜色或者除端点外其余顶点着不同于端点的颜色。图G称为是修正的彩虹顶点连通的,如果对于G的任意两个顶点u和v,G都有一条修正的彩虹顶点u-v路。使图G是修正的彩虹顶点连通图的最小颜色数目k称为图G的修正的彩虹连通数,记做rvc*(G)。给出了2-连通图G的修正的彩虹顶点连通数的一个上界,即rvc*(G)≤|n/2|+1。

关键词：修正的彩虹顶点连通数彩虹顶点着色

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生成树及2134有禁错排置换

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重庆师范大学学报（自然科学版） 2015年第2期32卷 84-87页

作者：王万禹成都师范学院数学系成都611130

为了证明猜想:2134有禁错排置换的生成树可能同构于2143有禁错排置换的生成树,即它们有相同的生成树。首先给出了A2n(2134)的生成树的继承法则,接着证明了A2n(2134)的生成树同构于A2n(2143)的生成树,最后得到了|A2n(2134)|=|A2n(2143)|=... 详细信息

为了证明猜想:2134有禁错排置换的生成树可能同构于2143有禁错排置换的生成树,即它们有相同的生成树。首先给出了A2n(2134)的生成树的继承法则,接着证明了A2n(2134)的生成树同构于A2n(2143)的生成树,最后得到了|A2n(2134)|=|A2n(2143)|=|SYT(n,n,n)|=2·(3n)!/(n!(n+1)!(n+2)!)。

关键词：生成树激活值错排置换

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县级医院医生工作积极性影响因素分析

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中华医院管理杂志 2015年第12期31卷 931-935页

作者：吴伟国家卫生计生委干部培训中心北京100024

目的分析县级医院医生工作积极性及其影响因素。方法在3省8县召开17场座谈会，对1055名医生进行问卷调查，对其工作积极性、工作积极性影响因素、2009年新医改后的变化3个分量表进行分析。结果工作积极性由内在驱动性、工作愉悦性、工... 详细信息

目的分析县级医院医生工作积极性及其影响因素。方法在3省8县召开17场座谈会，对1055名医生进行问卷调查，对其工作积极性、工作积极性影响因素、2009年新医改后的变化3个分量表进行分析。结果工作积极性由内在驱动性、工作愉悦性、工作认可性、外部认可性4个因子构成，其中内在驱动性最为重要，方差贡献率为20．55％；影响因素的6个维度中，工作环境影响最大，方差贡献率为19．46％。结论优化医改措施、改善工作环境和社会环境，可提高县级医院医生工作积极性。

关键词：县级医院医生工作积极性影响因素

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加强专用铁路运营安全管理研究

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中国安全科学学报 2019年第S1期29卷 138-144页

作者：王世恒王万玉兰州铁路监督管理局甘肃兰州730000 兰州财经大学电子商务综合实验室甘肃兰州730000

随着铁路行业改革的逐步深化以及'公转铁'政策的持续推进,专用铁路货运量不断攀升,但其面临的困难也已凸显,如何在新形势下加强专用铁路运营安全管理显得尤为重要,基于国家法律法规建设以及专用铁路运营现状,分析政府社会机构、接轨运... 详细信息

随着铁路行业改革的逐步深化以及'公转铁'政策的持续推进,专用铁路货运量不断攀升,但其面临的困难也已凸显,如何在新形势下加强专用铁路运营安全管理显得尤为重要,基于国家法律法规建设以及专用铁路运营现状,分析政府社会机构、接轨运输企业、产权单位等在专用铁路运营安全管理方面的职责,梳理归纳影响专用铁路运营安全管理的因素,利用层次分析法(AHP)构建影响因素评价体系,并在此基础上重构专用铁路运营安全管理体系,提出保障专用铁路运营安全管理的建议性措施。研究成果可为加强专用铁路运营安全管理提供依据。

关键词：专用铁路运营安全体系重构影响因素层次分析法(AHP)

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