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construction of 2D/2D Ti_(3)c_(2)T_(x)MXene/c.s.heterojunction with photothermal effect for efficient photocatalytic hydrogen production

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Journal of Materials science & Technology 2024年第4期171卷 1-9页

作者： T.Y.Huang Z.yang s.Y.yang Z.H.Dai Y.J.Liu J.H.Liao G.Y.Zhong Z.J.Xie Y.P.Fang s.s.Zhang Key Laboratory for Biobased Materials and Energy of Ministry of Education Guangdong Laboratory for Lingnan Modern AgricultureCollege of Materials and EnergySouth China Agricultural UniversityGuangzhou 510643China school of Physics and Optoelectronics South China University of TechnologyGuangzhou 510640China school of chemical Engineering and Energy Technology Guangdong Provincial Key Laboratory of Distributed Energy SystemsDongguan University of TechnologyDongguan 523808China

The insensitivity of semiconductors to visible and infrared light is a key constraint on the utilization of light energy in photocatalytic *** photocatalysts with full-spectrum absorption through surface engineering is an effective approach to fully harnessing light energy in semiconductor ***,a novel stable Ti_(3)c_(2)T_(x)MXene/c.s.heterojunction catalyst is obtained by in-situ epitaxial growth of two-dimensional(2D)c.s.nanosheets on 2D MXene interface via a solvothermal *** exceptional light absorption properties of MXene confer outstanding full-spectrum driven photocat-alytic hydrogen evolution capability upon the heterogeneous *** unique 2D/2D structure effectively mitigated the recombination of photogenerated carriers,enhancing the photocatalytic performance of the ***,the composite catalyst exhibits a significantly higher surface temperature of 80.4℃under visible light irradiation at an intensity of 0.1 W/cm^(2),which is 1.84 times higher than that of *** irradiation of visible and near infrared light,the composite catalyst with photothermal ef-fect demonstrates a remarkable hydrogen evolution rate of 65.4 mmol g^(-1)h^(-1),which is 7.2 times higher than that of c.s.*** study introduc.s.a novel approach for constructing full-spectrum absorption catalysts and expands the application of the photothermal effect in photocatalytic hydrogen evolution research.

关键词： Two-dimensional structure Heterostructure Photothermal effect Photocatalyst Hydrogen evolution

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Atomistic Investigation of shock-Induced Amorphization within Micro-shear Bands in Hexagonal close-Packed Titanium

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Acta Metallurgica sinica(English Letters) 2024年第9期37卷 1590-1600页

作者： Z.c.Meng K.G.Wang T.Ali D.Li c.G.Bai D.s.Xu s.J.Li A.H.Feng G.J.cao J.H.Yao Q.B.Fan H.Wang R.yang Institute of Metal Research Chinese Academy of SciencesShenyang 110016China school of Materials science and Engineering University of Science and Technology of ChinaShenyang 110016China Interdisciplinary centre for Additive Manufacturing(IcAM) School of Materials and ChemistryUniversity of Shanghai for Science and TechnologyShanghai 200093China school of Materials science and Engineering Tongji UniversityShanghai 201804China Key Laboratory for Light-Weight Materials Nanjing Tech UniversityNanjing 210009China National Key Laboratory of science and Technology on Materials Under shock and Impact School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Beijing Institute of Technology chongqing Innovation center Chongqing 401135China

The mechanical response of a single crystal titanium sample against(0001)α surface impact was investigated using molecular dynamics ***,non-uniform plastic deformation was observed in the *** high strain rates,amorphization occurred near the edge of the contact region where severe shear strain induced a large number of stacking faults(sFs)and *** contrast,the central part of the contact region underwent less deformation with significantly fewer ***,instead of amorphization by consuming sFs and dislocations,there was a gradual increase in the density of dislocations and sFs during the proc.s. of *** local amorphous regions eventually grew into shear bands.

关键词： shock compression Amorphization shear band Titanium Molecular dynamics

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Local MFs Matrix Decomposition Algorithms for Elliptic BVPs in Annuli

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Numerical Mathematics(Theory,Methods and Applications) 2024年第1期17卷 93-120页

作者： c.s.chen Andreas Karageorghis Min Lei school of Mathematics and Natural sciences University of Southern MississippiHattiesburgMS 39406USA Department of Mathematics and statistics University of CyprusP.O.Box 20537Nicosia 1678Cyprus college of Mathematics Taiyuan University of TechnologyTaiyuan 030024P.R.China

We apply the local method of fundamental solutions(LMFs)to boundary value problems(BVPs)for the Laplace and homogeneous biharmonic equations in *** appropriately choosing the collocation points,the LMFs discretization yields sparse block circulant system *** a result,matrix decomposition algorithms(MDAs)and fast Fourier transforms(FFTs)can be used for the solution of the systems resulting in considerable savings in both computational time and storage *** accuracy of the method and its ability to solve large scale problems are demonstrated by applying it to several numerical experiments.

关键词： Local method of fundamental solutions Poisson equation biharmonic equation matrix decomposition algorithms fast Fourier transforms

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structural basis for polyuridine tract recognition by sARs-coV-2 Nsp15

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Protein & cell 2024年第7期15卷 547-552页

作者： Fumiaki Ito Hanjing yang Z.Hong Zhou Xiaojiang s.chen Molecular and computational Biology Department of Biological SciencesUniversity of Southern CaliforniaLos AngelesCA 90089United States Department of Microbiology Immunology and Molecular GeneticsUniversity of CaliforniaLos AngelesCA 90095United States california Nanosystems Institute University of CaliforniaLos AngelesCA90095United States Genetic Molecular and Cellular Biology ProgramKeck School of MedicineUniversity of Southern CaliforniaLos AngelesCA 90089United States Norris comprehensive cancer center University of Southern CaliforniaLos AngelesCA 90089United States center of Excellence in NanoBiophysics University of Southern CaliforniaLos AngelesCA 90089United States

Dear Editor,coronaviruses have evolved a wide array of tactics to evade host antiviral *** host cells detect invading foreign nucleic acids including viral genome and viral replication intermediates,they activate interferon(IFN)signaling via cytoplasmic pattern recognition receptors(Kang et al.,2002;Kato et al.,2006).Remarkable stealth activities exhibited by coronaviruses are facilitated by a series of non-structural proteins(Nsps),such as Nsp15(Deng and Baker,2018;Deng et al.,2019;Hackbart et al.,2020),which is a uridine-specific endoribonuclease that mediates evasion of host detection of viral double-stranded RNA(dsRNA)(Bhardwaj et al.,2004;Deng et al.,2017;Frazier et al.,2021;Ivanov et al.,2004).Nsp15 targets a polyuridine[poly(U)]tract on the coronavirus negative strand RNA(Hackbart et al.,2020).Nsp15 limits the abundance and length of poly(U)within the negative strand RNA 5ʹ-extension by trimming down the initially synthesized poly(U)lead sequence to the optimal length that can suppress dsRNA formation but still serves as a template for poly(A)tail of the positive strand genome of the coronaviruses(Hofmann and Brian,1991).

关键词： p15 interferon template

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不同材质共享缆绳对浮式风电场系泊响应的影响

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中国舰船研究 2024年第4期19卷 59-70页

作者：仲凡连宇顺郑金海陈文兴马刚 YIM solomon c.s. 河海大学海岸灾害及防护教育部重点实验室江苏南京210098 河海大学港口海岸与近海工程学院江苏南京210098 浙江理工大学纺织纤维材料与加工技术国家地方联合工程实验室浙江杭州310018 哈尔滨工程大学烟台研究院山东烟台264006 俄勒冈州立大学美国俄勒冈州科瓦利斯97331

[目的]旨在合理设计浮式风电场的共享系泊系统,探究不同材质共享缆绳对浮式风电场动力响应的影响。[方法]首先,对浮式风电场设计共享系泊和传统(无共享缆绳)系泊方案,比较两种系泊方案的动力响应和经济成本,验证设计方案的可行性。其次... 详细信息

[目的]旨在合理设计浮式风电场的共享系泊系统,探究不同材质共享缆绳对浮式风电场动力响应的影响。[方法]首先,对浮式风电场设计共享系泊和传统(无共享缆绳)系泊方案,比较两种系泊方案的动力响应和经济成本,验证设计方案的可行性。其次,探究两类共享系泊系统对浮式风电场系泊响应的影响。最后,分析环境载荷的施加方向和缆绳材质对共享缆绳平均张力的影响。[结果]采用不同材质共享系泊系统的浮式风电场,其叶片张力近乎相同;两类共享系泊系统对风机位移和系缆平均张力的影响存在差别。此外,环境载荷施加角度和系缆材质也对风机位移和共享缆绳受力产生影响。[结论]该研究可为系泊系统中共享缆绳选型提供参考。

关键词：共享系泊系统共享缆绳锚链高强聚乙烯缆绳海上浮式风电场

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Mathematical modeling and simulations of stress mitigation by coating polycrystalline particles in lithium-ion batteries

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Applied Mathematics and Mechanics(English Edition) 2024年第6期45卷 947-962页

作者： N.IQBAL J.cHOI s.F.sHAH c.LEE s.LEE Department of Mechanical Roboticsand Energy EngineeringDongguk University-SeoulSeoul 04620Republic of Korea

A chemo-mechanical model is developed to investigate the effec.s.on the stress development of the coating of polycrystalline Ni-rich LiNixMnyco_(z)O_(2)(x≥0.8)(NMc)particles with poly(3,4-ethylenedioxythiophene)(PEDOT).The simulation results show that the coating of primary NMc particles significantly reduc.s.the stress generation by efficiently accommodating the volume change associated with the lithium diffusion,and the coating layer plays roles both as a c.s.ion against the volume change and a channel for the lithium transport,promoting the lithium distribution across the secondary particles more ***,the lower stiffness,higher ionic conductivity,and larger thickness of the coating layer improve the stress *** paper provides a mathematical framework for calculating the chemo-mechanical responses of anisotropic electrode materials and fundamental insights into how the coating of NMc active particles mitigates stress levels.

关键词： lithium-ion battery(LIB) polycrystalline particle coating finite element simulation Ni-rich LiNixMnyco_(z)O_(2)(x>0.8)(NMc)

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Genomic Mosaic.s. of the Brain:Origin,Impact,and Utility

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Neuroscience Bulletin 2024年第6期40卷 759-776页

作者： Jared H.Graham Johannes c.M.schlachetzki Xiaoxu yang Martin W.Breuss Department of Pediatrics Section of Clinical Genetics and MetabolismUniversity of Colorado School of MedicineAurora80045-2581COUSA Department of cellular and Molecular Medicine University of California San DiegoLa Jolla92093-0021San DiegoCAUSA Department of Neurosciences University of California San DiegoLa Jolla92093-0021San DiegoCAUSA Rady children’s Institute for Genomic Medicine San Diego92123CAUSA

Genomic mosaic.s. describes the phenomenon where some but not all cells within a tissue harbor unique genetic ***,research foc.s.d on the impact of genomic mosaic.s. on clinical phenotype—motivated by its involvement in cancers and overgrowth *** recently,we increasingly shifted towards the plethora of neutral mosaic variants that can act as recorders of cellular lineage and environmental ***,we summarize the current state of the field of genomic mosaic.s. research with a special emphasis on our current understanding of this phenomenon in brain development and *** the field of genomic mosaic.s. has a rich history,technological advanc.s.in the last decade have changed our approaches and greatly improved our *** will provide current definitions and an overview of contemporary detection approaches for genomic ***,we will disc.s. the impact and utility of genomic mosaic.s..

关键词： Genomics Brain development Brain homeostasis Genomic mosaic.s.

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An organic free radical generator independent on hydrogen peroxide for chemodynamic and immunotherapy in vivo

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Journal of Materials science & Technology 2024年第7期174卷 85-94页

作者： yang chen Yunpeng song chaojie Tang Hong yang Wu Wang shiping yang Zhiguo Zhou college of chemistry and Materials science International Joint Laboratory on Resource Chemistry of Ministry EducationShanghai Frontiers Science Center of Biomimetic CatalysisShanghai Normal UniversityShanghai 200234China Institute of Diagnostic and Interventional Radiology Shanghai Jiao Tong University Affiliated Sixth People’s HospitalShanghai 200233China

It is desirable to develop a free radical generator that is neither dependent on hydrogen peroxide nor external stimuli-triggered to achieve effective tumor ***,the free radical genera-tor MNPs-mcPBA was constructed with Zn_(0.4)co_(0.6)F_(e2)O_(4)@Zn_(0.4)Mn_(0.6)Fe_(2)O_(4)nanoparticles(MNPs)and 3-chloroperbenzoic acid(mcPBA).We believe that the iron(Ⅱ)on the surface of MNPs-mcPBA maybe represent high reactive activity and promote the generation of a large number of organic free radicals(c_(6)H_(4)clcOOO)in an acidic tumor microenvironment,which realizes the acid-dependent tumor treat-ment strategy independent on the H_(2)O_(2)level in *** addition,the generated organic free radicals(c_(6)H_(4)clcOOO)effectively induced immunogenic cell death(IcD)and increased T cell ***-der the synergetic treatment with an anti-PD-L1 antibody(α-PD-L1),a favorable anti-tumor effect was achieved.

关键词： Organic free radicals Immunogenic cell death Immunotherapy chemodynamic therapy

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Perfluorinated iodine alkanes promote the differentiation of mouse embryonic.s.em cells by regulating estrogen receptor signaling

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Journal of Environmental sciences 2024年第3期137卷 443-454页

作者： Zhihua Ren Xiaoxi yang Tingting Ku Qian s.Liu Jiefeng Liang Qunfang Zhou Franc.s.o Faiola Guibin Jiang state Key Laboratory of Environmental chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China college of Resourc.s.and Environment University of Chinese Academy of SciencesBeijing 100049China college of Environment and Resource Research Center of Environment and HealthShanxi UniversityTaiyuan 030006China college of sino-Danish University of Chinese Academy of SciencesBeijing 100049China

Investigating the development toxicity of perfuorinated iodine alkanes(PFIs)is critical,given their estrogenic effec.s.through binding with estrogen receptors(ERs).In the present study,two PFIs,including dodecafuoro-1,6-diiodohexane(PFHx DI)and tridecafuorohexyl iodide(PFHx I),with binding preference to ERαand ERβ,respectively,were selected to evaluate their effec.s.on proliferation and differentiation of the mouse embryonic.s.em cells(m Escs).The results revealed that,similar to E_(2),50μmol/L PFHx DI accelerated the cell proliferation of the m *** PFI stimulation at the exposure concentrations of 2–50μmol/L promoted the differentiation of the m Escs as characterized by the upregulation of differentiation-related biomarkers(i.e.,Otx2 and Dnmt3β)and downregulation of pluripotency genes(i.e.,Oct4,Nanog,sox2,Prdm14 and Rex1).comparatively,PFHx DI exhibited higher induction effect on the differentiation of the m Escs than did PFHx *** tests on ER signaling indicated that both PFI compounds induced exposure concentration-dependent expressions of ER signaling-related biomarkers(i.e.,ERα,ERβand caveolin-1)in the m Escs,and the downstream ER responsive genes(i.e.,c-fos,c-myc and c-jun)well responded to PFHx I *** role of ER in PFI-induced effec.s.on the m Escs was further validated by the antagonistic experiments using an ER inhibitor(IcI).The findings demonstrated that PFIs triggered ER signaling,and perturbed the differentiation program of the m Escs,causing the potential health risk during early stage of development.

关键词： Perfuorinated iodine alkanes(PFIs) Embryonic.s.em cells(Escs) Developmental toxicity cell differentiation Estrogen receptor-related signaling

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single-cell RNA sequencing facilitates the elucidation of the complete biosynthesis of the antidepressant hyperforin in st. John's wort

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Molecular Plant 2024年第9期17卷 1439-1457页

作者： song Wu Ana Luisa Malaco Morotti Jun yang Ertao Wang Evangelos c.Tatsis National Key Laboratory of Plant Molecular Genetics CASs Center for Excellence in Molecular Plant SciencesShanghai lnstitute of Plant Physiology and EcologyChineseAcademy of SciencesShanghai 200032China University of chinese Academy of sciences Shanghai 200032China UEPAMs-c.s.JIcs centre of Excellencefor Plant anamlcroblalsclence Snangnal 200032Cnina

Hyperforin is the compound responsible for the effectiveness of ***'s wort(Hypericum perforatum)as an antidepressant,but its complete biosynthetic pathway remains *** discovery based on co-expression analysis of bulk RNA-sequencing data or genome mining failed to discover the missing steps in hyperforin *** this study,we sequenced the 1.54-Gb tetraploid *** genome assem-bled into 32 chromosomes with the scaffold N50 value of 42.44 *** single-cell RNA sequencing,we iden-tified a type of cell,“Hyper cells”,wherein hyperforin biosynthesis de novo takes place in both the leaves and *** pathway reconstitution in yeast and tobacco,we identified and characterized four transmembrane prenyltransferases(HpPT1-4)that are localized at the plastid envelope and complete the hyperforin biosynthetic *** hyperforin polycyclic.s.affold is created by a reaction c.s.ade involving an irregular isoprenoid coupling and a tandem *** findings reveal how and where hy-perforin is biosynthesized,enabling synthetic-biology reconstitution of the complete ***,this study not only deepens our comprehension of specialized metabolism at the cellularlevel but also provides strategic guidance for elucidation of the biosynthetic pathways of other specializied metabolites in plants.

关键词： hyperforin Hypericum perforatum de novo genome sequencing single-cell RNA sequencing biosyn-thetic pathway meroterpenoids

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