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改性纳米零价铁活化过硫酸盐降解污染物

广州化工 2024年第17期52卷 100-103页

作者：安雪雯侯雨君仝镇豪安伟佳华北理工大学化学工程学院河北唐山063210

在当今环境下,基于水体中污染物带来的环境问题,寻找新的催化剂降解污染物成为研究热点。其中以硫酸根自由基(SO_(4)^(-)·)为基础的的高级氧化技术(AOPs)受到越来越多的关注。相比羟基自由基(OH·),SO_(4)^(-)·具有还原电位更高、半... 详细信息

在当今环境下,基于水体中污染物带来的环境问题,寻找新的催化剂降解污染物成为研究热点。其中以硫酸根自由基(SO_(4)^(-)·)为基础的的高级氧化技术(AOPs)受到越来越多的关注。相比羟基自由基(OH·),SO_(4)^(-)·具有还原电位更高、半衰期更长、pH范围更宽等优势。同时纳米零价铁(nZVI)因其粒径小,比表面积大而备受关注。由于nZVI易聚集、易氧化,需要对其进行改性,本文介绍了负载nZVI、Fe的双金属、硫化物改性nZVI活化过硫酸盐(PS)用于降解的研究。

关键词：纳米零价铁过硫酸盐降解

A Novel Approach for Trajectory Tracking Control of an Under-Actuated Quad-Rotor UAV

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IEEE/CAA Journal of Automatica Sinica 2024年第9期11卷 2030-2032页

作者： Ke Shao Kang Huang Shengchao zhen hao Sun Rongrong Yu School of Civil Aviation Northwestern Polytechnical UniversityXi’an 710072 School of Mechanical Engineering Hefei University of TechnologyHefei 230009China

Dear Editor,This letter presents a novel Udwadia-Kalaba(U-K)approach for the trajectory tracking control of a quad-rotor unmanned aerial vehicle(UAV).Compared to conventional control approaches,the desired trajectorie... 详细信息

关键词： letter desired constraints

Biomimetic design of highly flexible metal oxide nanofibrous membranes with exceptional mechanical performance for superior phosphopeptide enrichment

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Nano Research 2024年第5期17卷 4270-4278页

作者： Xue Mao zhen-zhen Li Dong-Lian hao Wei-Dong Han Gao-Peng Li Yao-Yu Wang Kun Zhang School of Textile Science and Engineering Key Laboratory of Functional Textile Material and Product(Ministry of Education)Xi’an Polytechnic UniversityXi’an 710048China Key Laboratory of Magnetic Molecules&Magnetic Information Materials of the Ministry of Education School of Chemistry&Material ScienceShanxi Normal UniversityTaiyuan 030031China Department of Clinical Laboratory The Second Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710004China Shanghai iProteome Biotechnology Co. LtdShanghai 201210China College of Chemistry&Materials Science Northwest UniversityXi'an 710127China

Developing free-standing and mechanical robust membrane materials capable of superior enrichment of phosphopeptides for analyzing and identifying the specific phosphoproteome of cancer cells is significant in understanding the molecular mechanisms of cancer development and exploring new therapeutic approaches,but still a significant challenge in materials *** this end,we firstly constructed highly flexible ZrTiO_(4) nanofibrous membranes(NFMs)with excellent mechanical stability through a cost-effective and scalable electrospinning and subsequent calcination ***,to further increase the enrichment capacity of the phosphopeptide,the biomimetic TiO_(2)@ZrTiO_(4) NFMs with root hair or leaf like branch microstructure are developed by the hydrothermal post-synthetic modification of ZrTiO_(4) NFMs through growing unfurling TiO_(2) nanosheets onto the ZrTiO_(4) ***,remarkable flexibility and mechanical stability enable the resulting TiO_(2)@ZrTiO_(4) NFMs excellent practicability,while the biomimetic microstructure allows it outstanding enrichment ability of the phosphopeptide and identification ability of the specific phosphoproteins in the digest of cervical cancer ***,6770 phosphopeptides can be enriched by TiO_(2)@ZrTiO_(4) NFMs(2205 corresponding phosphoproteins can be identified),and the value is much higher than that of ZrTiO_(4) NFMs(6399 phosphopeptides and 2132 identified phosphoproteins)and commercial high-performance TiO_(2) particles(4525 phosphopeptides and 1811 identified phosphoproteins).These results demonstrate the super ability of TiO_(2)@ZrTiO_(4) NFMs in phosphopeptide enrichment and great potential for exploring the pathogenesis of cancer.

关键词： inorganic nanofibers flexible ceramic nanofibrous membranes biomimetic materials exceptional mechanical performance flexibility

Antitumor effects of different Ganoderma lucidum spore powder in cell-and zebrafish-based bioassays

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Journal of Integrative Medicine 2021年第2期19卷 177-184页

作者： Yue-jiao Shi Hua-xian zheng Zhu-ping Hong Han-bo Wang Ying Wang Ming-yan Li zhen-hao Li Zhejiang Shouxiangu Pharmaceutical Co. LtdWuyi 321200Zhejiang ProvinceChina Zhejiang Shouxiangu Botanical Drug Institute Co. LtdHangzhou 310012Zhejiang ProvinceChina Zhejiang Engineering Research Center of Rare Medicinal Plants Wuyi 321200Zhejiang ProvinceChina Pharmaceutical Informatics Institute College of Pharmaceutical SciencesZhejiang UniversityHangzhou 310012Zhejiang ProvinceChina

Objective:Ganoderma lucidum spore(GLS)is gaining recognition as a medicinal part of *** and has been reported to possess various pharmacological properties,such as antitumor *** this work,wall-broken GLS powder(BGLSP)and wall-removed GLS powder(RGLSP),two kinds of GLS powder with different manufacturing techniques,were compared in terms of contents of active constituents and in vivo and in vitro antitumor ***:The ultraviolet and visible spectrophotometry method was used to determine the contents of polysaccharides and total triterpenoids in BGLSP and *** individual triterpenoids were further quantified using ultra-high-performance liquid chromatography and quantitative analysis of multicomponents by single *** antitumor effects of BGLSP and RGLSP were evaluated using in vitro cell viability assay against human gastric carcinoma SGC-7901,lung carcinoma A549 and lymphoma Ramos and further validated by in vivo zebrafish xenograft models with transplanted SGC-7901,A549 and Ramos,Results:The results showed that the contents of polysaccharides,total triterpenoids and individual triterpenoids of RGLSP were significantly higher than those of *** both BGLSP and RGLSP inhibited the three tumor cell lines in vitro in a dose-dependent manner,the inhibitory effects of RGLSP were much better than those of *** the in vivo zebra fish assay,RGLSP exhibited more potent inhibitory activities against tumors transpla nted into the zebra fish compared with BGLSP,and the inhibition rates of RGLSP reached approximately 78%,31%and 83%on SGC-7901,A549 and Ramos,***:The results indicated that the antitumor effects of GLS were positively correlated with the contents of the polysaccha rides and triterpenoids and demonstrated that the wall-removing manufacturing technique could significantly improve the levels of active constituents,and thereby enhance the antitumor activity.

关键词： Ganoderma lucidum Tumor Cancer cell Zebrafish Wall-broken Ganoderma lucidum spore powder Wall-removed Ganoderma lucidum spore powder

Analysis of Brucella cellular fatty acids

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Frontiers of Medicine 2010年第2期4卷 216-219页

作者： zhen-Xiang Zhao Hai JIANG Bu-Yun CUI Hong-Yan Zhao Dong-Ri PIAO Lan-Yu LI Su-zhen hao Department of Microbiology and Immunology Shanxi Medical UniversityTaiyuan 030001China National Institute for Communicable Disease Control and Prevention Chinese Center for Disease Control and PreventionBeijing 102206China

To acquire data of Brucella cellular fatty acids(CFAs)and probe into the possibility of utilizing CFAs information in typing Brucella,19 reference strains were subjected to CFAs *** all strains were inoculated on Brucella Agar plates,the cells were harvested,saponiﬁcated,methylated and extracted to provide fatty acid methylesters for gas chromatography(GC)*** on the CFAs data matrix,a dendrogram of 19 reference strains was generated by SPSS11.5 software *** results showed that 19 reference strains were divided intoﬁve clusters:cluster 1 included ***(bv.1,2,3,5)and ***;cluster 2 included ***(bv.3,4,5,6)and ***(bv.1,2,3);cluster 3 included ***(bv.1,2,7,9)and ***;cluster 4 was ***(bv.4);and cluster 5 was *** Brucella by GC analysis of CFAs is a good method to reﬂect drug resistance of Brucella,and the classiﬁcation is beneﬁcial for clinical *** also provides a new result of typing and demonstrates that the traditional classiﬁcation is not completely *** analysis may identify ***(bv.4)and ***.

关键词： Brucella gas chromatography cellular fatty acids dendrogram typing

Revegetation of Copper Mine Tailings with Ryegrass and Willow

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Pedosphere 2004年第3期14卷 283-288页

作者： haoXiu-zhen ZHOUDong-Mei SIYou-Bin StateKeyLaboratoryofSoilandSustainableAgriculture InstituteofSoilScienceChineseAcademyofSciencesNanjing210008（China）

To restore vegetation on metal mine tailings is very difficult because theyoften contain high concentrations of heavy metals, low nutrient content and low water retentioncapacity. This study involved 3 experiments that evaluated the effects of 4 treatment amendments:montmorillonite, rice straw, organic manure and chemical fertilizer on the growth of ryegrass(Lolium perenne L.) and willow (Salix viminalis L.) with Cu and Zn mine tailings from two miningareas. The results showed that ryegrass was the most tolerant of 4 crops to Cu toxicity. Also whenorganic manure, which contained high concentrations of inorganic salts, was added to the minetailings, it significantly hindered ryegrass growth (P = 0.05). Meanwhile, with ryegrass organicmanure significantly increased (P = 0.05) the extractable Cu concentration in both mine *** montmorillonite was used as a mine tailings amendment with willow, the height and tress numberat the 1st cut were significantly greater (P = 0.05) than a control without montmorillonite. Howeverthere was no significant difference for height, tress number, dry weight or root dry weight at the2nd cut. So, amendment applications to reduce metal toxicity and increase nutrients retention inmine tailings were essential during revegetation of mine tailings.

关键词： amendment copper mine tailings ryegrass (lolium perenne L.) willow (salixviminalis L.) zinc mine tailings

Multicolor upconversion reversible modulations in YNbO_(4):Er^(3+)/Tm^(3+)/Yb^(3+) photochromic materials

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Journal of Rare Earths 2024年第2期42卷 270-277,I0002页

作者： zhen Zhang Peng Li Ziyi Xu Zhihao Zhang Qiwei Zhang Haiqin Sun Xihong hao Inner Mongolia Key Laboratory of Ferroelectric-related New Energy Materials and Devices Schoolof Materials and MetallurgyInner Mongolia University of Science and TechnologyBaotou014010China College of Physics and Technology Guangxi Normal UniversityGuilin541004China

Photochromic materials with multicolor upconversion reversible modulations are attractive in optical switching ***,the fabricated YNbO_(4):Er^(3+)/Tm^(3+)/Yb^(3+) materials exhibit excellent photochromism and multicolor upconversion properties from green,red to near infrared(NIR) emissions with increasing Yb *** multiband upconversion modulations are achieved by alternating light(365 and 405 nm) or thermal *** 365 nm irradiation,the luminescence color changes from yellow to red,the luminescent photoswitching contrast reaches up to 86.21%(green),82.12%(red) and 77.38%(NIR) in the Y_(0.83)Er_(0.01)Tm_(0.01)NbO_(4):0.15 Yb ***,the upconversion emission intensity before and after photochromic reaction shows remarkable change in a wide temperature range of 298-718 *** results indicate that the Er^(3+)/Tm^(3+)/Yb^(3+) tri-doped YNbO_(4) materials can be a good candidate in optical switching and data storage applications.

关键词： Photochromic materials Luminescence modulation Multicolor emission Photoswitching contrast Rare earths

Phase-modulated quadrature squeezing in two coupled cavities containing a two-level system

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Chinese Physics B 2020年第5期29卷 125-131页

作者： hao-zhen Li Ran Zeng Xue-Fang Zhou Mei-Hua Bi Jing-Ping Xu Ya-Ping Yang School of Communication Engineering Hangzhou Dianzi UniversityHangzhou 310018China Key Laboratory of Advanced Micro-Structured Materials of Ministry of Education School of Physics Science and EngineeringTongji UniversityShanghai 200092China

The phase-modulated quadrature squeezing in the system that composed of two coupled cavities interacting with a two-level atom is *** variances of the amplitude and phase quadrature of the output field are *** turns out that the squeezing behaviors of the output field can be obviously modified due to the phase difference of the coupling strengths between the atom and the two *** squeezing in one quadrature(i.e.,phase quadrature)can be transferred into another(i.e.,amplitude quadrature),or the quadrature squeezing located at the low-frequency region can be transferred into the high-frequency region by modulating the relative phase of the coupling ***,the effects of the decay mismatch between the two cavities and the coupling mismatch between the atom and the cavities on the quadrature squeezing have been *** results show that both the decay mismatch and the coupling mismatch play a positive role in generating better quadrature squeezing.

关键词： quadrature squeezing cavity QED phase modulation

高含硫气田集输系统硫沉积机理及非介入式检测技术

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当代化工 2024年第1期53卷 217-220页

作者：袁运栋韩建强余春浩郝振东代光洪范开峰中油国际管道有限公司北京100029 常州大学江苏常州213164

高含硫气田集输系统中的硫组分会因压力、温度和组分等的变化而析出,经成核、聚集过程后逐渐生长为硫颗粒并沉积到管道内壁。硫沉积可导致管道堵塞、设备污染、腐蚀加速、集输系统效率降低等问题,严重威胁集输系统安全。分析了高含硫气... 详细信息

高含硫气田集输系统中的硫组分会因压力、温度和组分等的变化而析出,经成核、聚集过程后逐渐生长为硫颗粒并沉积到管道内壁。硫沉积可导致管道堵塞、设备污染、腐蚀加速、集输系统效率降低等问题,严重威胁集输系统安全。分析了高含硫气田集输系统的硫沉积机理,包括析硫与成核机理、硫沉积来源及影响硫沉积的因素。适用于高含硫气田集输系统硫沉积的非介入式检测技术很少,重点介绍了基于超声波原理的在线检测技术及其在高含硫气田中的应用现状,同时指出了其他检测技术应用于硫沉积检测时存在的不足。

关键词：高含硫气田硫沉积成核聚集非介入式检测技术