检索结果-南通市图书馆

Environmental factors affecting degradation of perfluorooctanoic acid(PFOA) by In2O3 nanoparticles

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2020年第7期32卷 48-56页

作者： Weilan Zhang Harry Efstathiadis lingyun li Yanna liang Department of Environmental and Sustainable Engineering University at AlbanySUNYAlbanyNY 12222USA Department of Nanoengineering SUNY Polytechnic InstituteAlbanyNY 12203USA New York State Department of Health Division of Environmental Health SciencesWadsworth CenterAlbanyNY 12237USA

Nanophotocatalysts have shown great potential for degrading poly-and perfluorinated substances(PFAS).In light of the fact that most of these catalysts were studied in pure water,this study was designed to elucidate effects from common environmental factors on decomposing and defluorinating perfluorooctanoic acid(PFOA)by In2O3 *** from this work demonstrated that among the seven parameters,pH,sulfate,chloride,H2O2,In2O3 dose,NOM and O2,the first four had statistically significant negative effects on PFOA *** PFOA is a strong acid,the best condition leading to the highest PFOA removal was identified for two pH *** pH was between 4 and 8,the optimal condition was:pH=4.2;sulfate=5.00 mg/L;chloride=20.43 mg/L;H2O2=0 mmol/*** this condition,PFOA decomposition and defluorination were 55.22 and 23.56%,*** pH was between 2 and 6,the optimal condition was:pH=2;sulfate=5.00 mg/L;chloride=27.31 mg/L;H2O2=0 mmol/*** this condition,the modeled PFOA decomposition was 97.59%with a defluorination of approximately 100%.These predicted results were all confirmed by experimental ***,In2O3 nanoparticles can be used for degrading PFOA in aqueous *** approach works best when the target contaminated water contains low concentrations of NOM,sulfate and chloride and at a low pH.

关键词： Perfluorooctanoic acid(PFOA) Nanophotocatalyst Degradation Defluorination Optimization

Hash-based signature revisited

在线全文

学校读者我要写书评

暂无评论

Cybersecurity 2022年第4期5卷 71-96页

作者： lingyun li Xianhui Lu Kunpeng Wang State Key Laboratory of Information Security Institute of lnformation EngineeringCASNo.89 Minzhuang RoadHaidian DistrictBeijing 100093China School of Cyber Security University of Chinese Academy of SciencesNo.19 Yuquan RoadShijingshan DistrictBeijing 100049China School of Computer Science Liaocheng UniversityNo.1Hunan RoadDongchangfu DistrictLiaochengCity 252000China.

The current development toward quantum attack has shocked our confidence on classical digital signature *** one of the mainstreams of post quantum cryptography primitives,hash-based signature has attracted more and more concern in both cryptographic research and application in recent *** goal of this paper is to present,classify and discuss different solutions for hash-based ***,this paper discusses the research progress in the component of hash-based signature,i.e.,one-time signature and few-time signature;then classifies the tree-based public key authentication schemes of hash-based signature into limited number and stateful schemes,unlimited number and stateful schemes and unlimited number and stateless *** above discussion aims to analyze the overall design idea of different categories of hash-based signatures,as well as the construction,security reduction and performance efficiency of specific ***,the perspectives and possible development directions of hash-based signature are briefly discussed.

关键词： Hash-based signature One-time signature Few-time signature Hash tree

Abnormal specific heat at low temperatures and transport properties in Mg-Cu-Ag-Gd bulk metallic glass

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Rare Earths 2023年第2期41卷 277-282页

作者： Qiang Zheng Xiu Su lingyun li Juan Du Institute of Materials School of Materials Science and EngineeringShanghai UniversityShanghai 200072China

We report the pronounced low-temperature specific-heat Cpanomalies in the Mg_(59.5)Cu_(22.9)Ag_(6.6)Gd_(11)bulk metallic glass(BMG).The extrapolated electron’s temperature coefficientγ0Kis up to 681.8 mJ/(molGd·K^(2))at 0 K,which is a heavy-fermion-like *** low temperature specific heat indicates an enhancement of the conduction-electron effective mass m*below 7.5 K,suggesting that the Mg_(59.5)Cu_(22.9)Ag_(6.6)Gd_(11)BMG is not free-electron-like *** excess specific heat in the Mg-based BMG is interpreted with tunneling states and spin glass state(magnetism)which are determined by subtracting electrons’and phonons’contribution to the specific heat below 12 *** Boson peak(BP)temperature is located at 27 K,which is much higher than the reported values of other ***,a BP height of 0.047 mJ/(mol·K^(4))is obtained due to reduced free volume during copper mold casting with a slow cooling *** electrical resistivity was also investigated between 2 and 300 K,which has a negative temperature coefficient of resistivity(TCR)below 35 K(Kondo temperature,TK)and a positive value of 3.9×10^(-4)/K above 35 *** is a minimum at about 35 K for the electrical resistivity,which can be explained by the Kondo *** the resistivity above 35 K,it can be explained by the FaberZiman model due to the T-dependence change of structure factor.

关键词： Specific heat Boson peak Electrical resistivity Bulk metallic glass(BMG) Spin glass behavior Rare earths

A composite peptide-supramolecular microneedle system for melanoma immunotherapy

在线全文

学校读者我要写书评

暂无评论

Nano Research 2023年第4期16卷 5335-5345页

作者： Mengzhen li Minxuan Wang lingyun li limin Zhang Bing Ma Weizhi Wang Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering Ministry of Industry and Information TechnologyKey Laboratory of Cluster Science of Ministry of EducationBeijing Key Laboratory of Photoelectronic/Electro-photonic Conversion MaterialsSchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081China

Despite recent advances in melanoma treatment through the use of antibody immunotherapy,the clinical benefit remains restricted by its inefficient infiltration and immunosuppression within the tumor microenvironment(TME).In addition,immunerelated adverse events(irAEs)have often occurred due to the off-target binding of therapeutic drugs to normal tissues after systematic ***,we constructed an integrated and cascaded drug delivery system for the treatment of *** addition to blocking the programmed cell death protein 1 or its ligand(PD-1/PD-L1)axis,the PD-L1 targeting peptide(FE)with spherical micelle self-assembly characteristics could also effectively encapsulate the immune adjuvant resiquimod(R848),and form a complete nano ***^(R)was further integrated into tumor-responsive microneedles(MNs)to establish FE^(R)@MN and could reach the cascaded ***^(R)could be sustainedly released from the MN system and disassemble into monomers,achieving PD-1/PD-L1 axis blockade whilst reprogramming the immunosuppressive ***,FE^(R)@MN permits the controllable release and retention enhancement of the targeting peptide in the TME,thus causing prolonged PD-L1 blockade *** is demonstrated that this synergistic treatment could efficiently inhibit melanoma growth,providing a new strategy for the combination treatment of melanoma.

关键词： targeting peptide cascaded drug delivery microneedle immune checkpoint blockade self-assembly

Measles Virus(Nepal Strain)Hemagglutinin Gene: Cloning,Complete Nucleotide Sequence Analysis and Expression in COS Cells

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Wuhan University Journal of Natural Sciences 1998年第3期3卷 123-128页

作者： li, lingyun Qi, Yipeng College of life Sciences Wuhan University Wuhan China

Hemagglutinin gene of Measles virus(Nepal strain) was amplified by RT PCR technique, cloned and sequenced by the dideoxy mediated chain termination method. The comparison to the standard strain(Edmonston strain) showed many important mutations. The homology of these two strains was 98.17%. Then H gene was cloned into expression vector pCD SRα296 and introduced into COS 7 cells by electroporation method. The expression and function of cloned H gene was checked by hemadsorption assays.

关键词： measles virus hemagglutinin gene,cos 7 cells,hemadsorption assays

Effect of wastewater COD/N ratio on aerobic nitrifying sludge granulation and microbial population shift

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2012年第2期24卷 234-241页

作者： Lei Wu Chengyao Peng Yongzhen Peng lingyun li Shuying Wang Yong Ma Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering Beijing University of Technology Beijing 100124 China

The effect of COD/N ratio on the granulation process and microbial population succession was *** identical sequencing batch reactors,R1,R2,R3 and R4,were operated with various initial COD/N ratios ranging from 0/200 to 800/200（m/m）.Ethanol was fed as the source of *** granules were successfully cultivated in R2 and R3,operating with the COD/N ratio of 200/200 and 400/200,*** electron microscope observations indicated that short rod-shaped and spherical bacteria were dominant in R2,while granules produced in R3 were surrounded with a large amount of filamentous *** average specific nitritation rate in R2 and R3 were 0.019 and 0.008 mg N/（mg ***）,*** in situ hybridization results demonstrated that nitrifying bacteria population was enriched remarkably in *** indicated that nitrification ability and nitrifying bacteria population were enriched remarkably at low COD/N ***,no granules were formed in R1 and R4 which might attribute to either limited or excessive extracellular polymeric substances *** study contributed to a better understanding of the role of COD/N ratio in nitrifying sludge granulation.

关键词： aerobic granules COD/N ratio sequencing batch reactor nitrification performance microbial population shift

An Ultra-stable Eu^(3+)Doped Yttrium Coordination Polymer with Dual-function Sensing for Cr(Ⅵ)and Fe(Ⅲ)Ions in Aqueous Solution

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2022年第4期41卷 68-74页

作者： Fazheng Huang Xinhao li Zhen Zhang Ziqi Jiang Guoqiang Wang lingyun li Yan Yu Key Laboratory of Advanced Materials Technology College of Materials Science and EngineeringFuzhou UniversityFuzhou 350108China

The exploration of a dual-functional sensor is the key to effectively detect the Cr(Ⅵ)and Fe(Ⅲ)cations in water,which is important to human health and environmental *** of the phase stability and excellent luminescence,the rare-earth coordination polymers have great potential as dual-functional ***,we develop a Y_(0.91)Eu_(0.09)(H_(2)O)_(2){C_(6)H_(3)(CO_(2))_(3)}(MIL-92(Y):9%Eu^(3+))-based dual-function luminescent sensor on Cr(Ⅵ)and Fe(Ⅲ),which exhibits excellent phase stability and dispersibility in *** luminescence of MIL-92(Y):9%Eu^(3+)aqueous suspension quenches on Fe^(3+)with Stern-Volmer constant K_(sv) of 1.79×10^(3)M^(-1)and limit of detection of 17μ*** MIL-92(Y):9%Eu^(3+)aqueous suspension also has turn-off sensing ability towards Cr_(2)O_(7)^(2-)and Cr O_(4)^(2-)with K_(sv) values of 3.5×10^(3)and 6.14×10^(3)M^(-1),*** has detection limitations of 10 and 5μM on Cr_(2)O_(7)^(2-)and Cr_(2)O_(7)^(2-)ions,respectively.

关键词： Cr(Ⅵ) Fe(Ⅲ) luminescence sensing dual-function detection MIL-92

Application of Raman spectroscopy in carbon nanotube-based polymer composites

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2010年第35期55卷 3978-3988页

作者： GAO Yun li lingyun TAN PingHeng liU LuQi ZHANG Zhong National Center for Nanoscience and Technology of China Beijing 100190 China State Key Laboratory for Superlattices and Microstructures Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 China Academy for Advanced Interdisciplinary Studies Peking University Beijing 100871 China Graduate School of Chinese Academy of Sciences Beijing 100190 China

Raman spectroscopy has been widely used to identify the physical properties of carbon nanotubes(CNTs),and to assess their functionalization as well as ***,Raman spectroscopy has become a powerful tool to characterize the interfacial properties between CNTs and polymer *** review provides an overview of micro-Raman spectroscopy of CNTs and its application in studying CNT reinforced polymer *** on the specific Raman band shifts relating to the mechanical deformation of CNTs,Raman scattering can be used to evaluate the interactions between the CNTs and the surrounding polymer in the composites,and to detect the phase transitions of the polymer,and investigate the local stress state as well as the Young's modulus of the ***,we also review the current progress of Raman spectroscopy in various CNT macroarchitectures(such as films,fibers as well as composite fibers).The microscale structural deformation of CNT macroarchitectures and strain transfer factors from macroscale architectures to microscale structures are *** on an in situ Raman-tensile test,we further predict the Young's modulus of the CNT macroarchitectures and reveal the dominating factors affecting the mechanical performances of the CNT macroarchitectures.

关键词：聚合物复合材料拉曼光谱技术碳纳米管应用杨氏模量复合纤维物理性质 CNTs

Cloning and identification of measles virus receptor gene from marmoset cells

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2002年第20期47卷 1679-1687页

作者： lingyun li Xin liu Peng Zhang Yipeng Qi Ming Cheng Wuhan Univ Inst Virol Wuhan 430072 Peoples R China

The measles virus (MV) strains with mutated hemagglutinin gene (ha) lost the capacity to infect its sensitive host cells (Vero cells), but it may infect the marmoset B-lymphoblastoid cell line B95a. From above, we can presume that there is a novel cellular receptor for those measles virus strains on B95a cells. Using the yeast two-hybrid system, we screened and cloned a novel gene-bip (B-lymphoblastoid interaction protein of marmoset) from B95a cell cDNA library, which encoded a protein interacting with measles virus hemagglutinin protein (Ha). The bip cDNA was 1540 base pairs in length and contained a unique open reading frame (ORF) of 1011 base pairs encoding a transmembrane protein of 337 amino acid residues. The primary structure of amino acids residue is predicted that the Bip comprised a hydrophobic transmembrane domain and a hydrophobic leader region. The researches about the deletion mutants showed that the deletion of transmembrane domain in Bip did not affect the interaction between Bip and

关键词： B95a-derived measles virus isolates hemagglutinin pro-tein (Ha) yeast two-hybrid system hip slam.