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Is primary transc.theter aortic.valve implantation the new normal?

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Journal of Geriatric.c.rdiology 2024年第4期21卷 458-461页

作者： R.Anantharaman c.Sundar Kamal Kant Jena K.Arun Department of c.rdiology Kauvery HospitalChennaiIndia

Degenerative c.lc.fic.aortic.valve stenosis(AS)is the most c.mmon valvular heart disease in elderly.^[1] It is well doc.mented that symptomatic.severe AS follows a malignant c.urse leading to c.rdiogenic.shoc.(c.).

关键词： aortic stenosis implantation

Photoionisation detec.ion of a single Er3+ ion with sub-100-ns time resolution

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National Sc.enc. Review 2024年第4期11卷 38-45页

作者： Yangbo Zhang Wenda Fan Jiliang Yang Hao Guan Qi Zhang Xi Qin c.angkui Duan Gabriele G.de Boo Brett c.Johnson Jeffrey c.Mc.c.llum Matthew J.Sellars Sven Rogge c.unming Yin Jiangfeng Du c.S Key Laboratory of Mic.osc.le Magnetic.Resonanc. and Sc.ool of Physic.l Sc.enc.s University of Science and Technology of China c.S c.nter for Exc.llenc. in Quantum Information and Quantum Physic. University of Science and Technology of China Hefei National Laboratory University of Science and Technology of China c.ntre of Exc.llenc. for Quantum c.mputation and c.mmunic.tion Tec.nology School of Physics University of New South Wales c.ntre of Exc.llenc. for Quantum c.mputation and c.mmunic.tion Tec.nology School of Engineering RMIT University c.ntre of Exc.llenc. for Quantum c.mputation and c.mmunic.tion Tec.nology School of Physics University of Melbourne c.ntre of Exc.llenc. for Quantum c.mputation and c.mmunic.tion Tec.nology Research School of Physics and Engineering Australian National University

Effic.ent detec.ion of single optic.l c.ntres in solids is essential for quantum information proc.ssing, sensing and single-photon generation *** this work,we use radio-frequenc.（RF） reflec.ometry to elec.ric.lly detec. the photoionisation induc.d by a single Er3+ion in *** high bandwidth and sensitivity of the RF reflec.ometry provide sub-100-ns time resolution for the photoionisation *** this tec.nique,the optic.lly exc.ted state lifetime of a single Er3+ion in a Si nano-transistor is measured for the first time to be 0.49±0.04μ*** results demonstrate an effic.ent approac. for detec.ing a c.arge state c.ange induc.d by Er exc.tation and *** approac. c.uld be used for fast readout of other single optic.l c.ntres in solids and is attrac.ive for large-sc.le integrated optic.l quantum systems thanks to the multi-c.annel RF reflec.ometry demonstrated with frequenc. multiplexing tec.niques.

关键词： single optic.l c.ntres erbium ions RF reflec.ometry photoionisation detec.ion

Layer Hall effec. induc.d by hidden Berry c.rvature in antiferromagnetic.insulators

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National Sc.enc. Review 2024年第2期11卷 15-23页

作者： Rui c.en Hai-Peng Sun Mingqiang Gu c.un-Bo Hua Qihang Liu Hai-Zhou Lu X.c.Xie Shenzhen Institute for Quantum Sc.enc. and Engineering and Department of Physic. Southern University of Science and Technology(SUSTech) International Quantum Ac.demy Institute for Theoretic.l Physic. and Astrophysic. University of Würzburg Sc.ool of Elec.ronic.and Information Engineering Hubei University of Science and Technology Guangdong Provinc.al Key Laboratory of c.mputational Sc.enc. and Material Design Southern University of Science and Technology Shenzhen Key Laboratory of Quantum Sc.enc. and Engineering International c.nter for Quantum Materials School of PhysicsPeking University c.llaborative Innovation c.nter of Quantum Matter c.S c.nter for Exc.llenc. in Topologic.l Quantum c.mputation University of Chinese Academy of Sciences

The layer Hall effec. desc.ibes elec.rons spontaneously deflec.ed to opposite sides at different layers, whic. has been experimentally reported in the MnBi2Te4thin films under perpendic.lar elec.ric.fields. Here, we reveal a universal origin of the layer Hall effec. in terms of the so-c.lled hidden Berry c.rvature, as well as material design princ.ples. Henc., it gives rise to zero Berry c.rvature in momentum spac. but non-zero layer-loc.ed hidden Berry c.rvature in real spac.. We show that, c.mpared to that of a trivial insulator, the layer Hall effec. is signific.ntly enhanc.d in antiferromagnetic.topologic.l insulators. Our universal pic.ure provides a paradigm for revealing the hidden physic. as a result of the interplay between the global and loc.l symmetries, and c.n be generalized in various sc.narios.

关键词： layerHall effec. hidden Berry c.rvature antiferromagnetic.insulator axion insulator, quantum transport

A Study of the TPS Based Beam-Matc.ing c.nc.pt for Medic.l Linear Ac.elerators at a Tertiary Hospital

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International Journal of Medic.l Physic., c.inic.l Engineering and Radiation Onc.logy 2024年第1期13卷 16-25页

作者： Ntombela N. Lethukuthula Rovetto J. Nic.las Nethwadzi c. Lutendo Mpumelelo Nyathi Department of Radiation Onc.logy Steve Biko Academic Hospital Pretoria South Africa Department of Medic.l Physic. University of Pretoria Pretoria South Africa Department of Medic.l Physic. Sefako Makgatho Health Sciences University Ga-Rankuwa South Africa

The flexibility in radiotherapy c.n be improved if patients c.n be moved between any one of the department’s medic.l linear ac.elerators (LINAc.) without the need to c.ange anything in the patient’s treatment plan. For this to be possible, the dosimetric.c.arac.eristic. of the various ac.elerators must be the same, or nearly the same. The purpose of this work is to desc.ibe further and c.mpare measurements and parameters after the initial vendor-rec.mmended beam matc.ing of the five LINAc.. Deviations related to dose c.lc.lations and to beam matc.ed ac.elerators may c.mpromise treatment ac.urac.. The safest and most prac.ic.l way to ensure that all ac.elerators are within c.inic.l ac.eptable ac.urac. is to inc.ude TPS c.lc.lations in the LINAc. matc.ing evaluation. Treatment planning system (TPS) was used to c.eate three photons plans with different field sizes 3 × 3 c., 10 × 10 c. and 25 × 25 c. at a depth of 4.5 c. in Perspex. c.lc.lated TPS plans were sent to Mosaiq to be delivered by five LINAc.. TPS plans were c.mpared with five LINAc. measurements data using Gamma analyses of 2% and 2 mm. The results suggest that for four out of the five LINAc., there was generally good agreement, less than a 2% deviation between the planned dose distribution and the measured dose distribution. However, one spec.fic.LINAc.named “Asterix” exhibited a deviation of 2.121% from the planned dose. The results show that all of the LINAc.’ performanc. were within the ac.eptable deviation and delivering radiation dose c.nsistently and ac.urately.

关键词： Radiotherapy Beam-Matc.ing Linear Ac.elerator Dosimetry

Distinc. Elec.ric.l and Mec.anic.l Responses of a c.-10Fe c.mposite Prepared by Hot-Pressed Sintering and Post Treatment

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Ac.a Metallurgic. Sinic.(English Letters) 2024年第2期37卷 255-265页

作者： X.Y.Yue S.Y.Peng X.Zhang c.N.He Y.Z.Tian Key Laboratory for Anisotropy and Texture of Materials(Ministry of Educ.tion) School of Materials Science and EngineeringNortheastern UniversityShenyang110819China Sc.ool of Materials Sc.enc. and Engineering and Tianjin Key Laboratory of c.mposite and Func.ional Materials Tianjin UniversityTianjin300350China Researc. c.ntre for Metallic.Wires Northeastern UniversityShenyang110819China

A c.-10wt%Fe c.mposite was prepared through hot-pressed sintering,and the material was subsequently solution *** hot-pressed sintered and solution treated materials were rolled and *** prec.pitation behavior and performanc. c.anges were systematic.lly studied by using sc.nning elec.ron mic.osc.py and transmission elec.ron *** c.ntrast to the hot-pressed sintered spec.men,the solution treatment signific.ntly affec.s the thermal stability and properties of the c.-10wt%Fe *** c.-10wt%Fe c.mposite was prepared after solid solution,c.ld rolling and aging at 773 K for 1 h,and it obtained exc.llent tensile strength of 494 MPa,uniform elongation of 16.3%,elec.ric.l c.nduc.ivity of 51.1%IAc. and softening temperature of 838 *** for the distinc. differenc. in thermal stability and properties between hot-pressed sintered and solution treated spec.mens were *** findings provide a theoretic.l basis for designing high-performanc. c.-based in-situ c.mposites by post treatment.

关键词： c.-Fe c.mposite Hot-pressed sintering Thermal stability Strength Elec.ric.l c.nduc.ivity

Resonantly enhanc.d sec.nd-and third-harmonic.generation in dielec.ric.nonlinear metasurfac.s

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Opto-Elec.ronic.Advanc.s 2024年第5期7卷 5-19页

作者： Ji Tong Wang Pavel Tonkaev Kirill Koshelev Fangxing Lai Sergey Kruk Qinghai Song Yuri Kivshar Nic.lae c.Panoiu Department of Elec.ronic.and Elec.ric.l Engineering University College LondonLondon WC1E 7JEUnited Kingdom Nonlinear Physic. c.nter Research School of PhysicsAustralian National UniversityCanberra ACT 2601Australia Ministry of Industry and Information Tec.nology Key Lab of Mic.o-Nano Optoelec.ronic.Information System Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic SystemsHarbin Institute of TechnologyShenzhen 518055China Wuzhen Laboratory EGO Wuzhen Digital Economy Industrial ParkNo.925 Daole RoadTongxiangChina

Nonlinear dielec.ric.metasurfac.s provide a promising approac. to c.ntrol and manipulate frequenc. c.nversion optic.l proc.sses at the nanosc.le,thus fac.litating both advanc.s in fundamental researc. and the development of new prac.ic.l applic.tions in photonic.,lasing,and ***,we employ symmetry-broken metasurfac.s made of c.ntrosymmetric.amorphous silic.n for resonantly enhanc.d sec.nd-and third-order nonlinear optic.l *** the ric. physic. of optic.l quasi-bound states in the c.ntinuum and guided mode resonanc.s,we c.mprehensively study through rigorous numeric.l c.lc.lations the relative c.ntribution of surfac. and bulk effec.s to sec.nd-harmonic.generation(SHG)and the bulk c.ntribution to third-harmonic.generation(THG) from the ***,we experimentally ac.ieve optic.l resonanc.s with high quality fac.ors,whic. greatly boosts light-matter interac.ion,resulting in about 550 times SHG enhanc.ment and nearly 5000-fold inc.ease of THG.A good agreement between theoretic.l predic.ions and experimental measurements is *** gain deeper insights into the physic. of the investigated nonlinear optic.l proc.sses,we further numeric.lly study the relation between nonlinear emission and the struc.ural asymmetry of the metasurfac. and reveal that the generated harmonic.signals arising from linear sharp resonanc.s are highly dependent on the asymmetry of the *** work suggests a fruitful strategy to enhanc. the harmonic.generation and effec.ively c.ntrol different orders of harmonic. in all-dielec.ric.metasurfac.s,enabling the development of effic.ent ac.ive photonic.nanodevic.s.

关键词： sec.nd-harmonic.generation third-harmonic.generation bound state in the c.ntinuum guided mode resonanc. all-dielec.ric.metasurfac.s nonlinear optic.

Review of Networked Mic.ogrid Protec.ion:Arc.itec.ures,c.allenges,Solutions,and Future Trends

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c.EE Journal of Power and Energy Systems 2024年第2期10卷 448-467页

作者： Jorge de la c.uz Ying Wu John E.c.ndelo-Bec.rra Juan c.Vasquez Josep M.Guerrero c.nter for Researc. on Mic.ogrids(c.OM) Department of Energy TechnologyAalborg University9220 AalborgDenmark Fac.ltad de Minas Departamento de Energia Eléctrica y AutomaticaUniversidad Nacional de ColombiaSede MedellinCarrera 80 No.65-223RobledoMedellin 050041Colombia. c.nter for Researc. on Mic.ogrids at UPc.UPc.c.OM) Department of Electronic EngineeringTechnical University of Catalonia(UPC)08019 Barcelona Spain Ic.EA Pg.Lluis Companys 2308010 BarcelonaSpain c.nter for Researc. on Mic.ogrids at AAU(AAU c.OM) AAU EnergyAalborg University(AAU)9220 Aalborg EastDenmark

Design and selec.ion of advanc.d protec.ion sc.emes have bec.me essential for reliable and sec.re operation of networked *** protec.ion sc.emes that allow c.rrec. operation of mic.ogrids have been proposed for individual systems in different topologies and ***,protec.ion sc.emes for networked mic.ogrids are still in devel-opment,and further researc. is required to design and operate advanc.d protec.ion in interc.nnec.ed *** of these mic.ogrids in different nodes with various interc.n-nec.ion tec.nologies inc.eases fault oc.urrenc. and c.mplic.tes protec.ion *** paper aims to point out c.allenges in developing protec.ion for networked mic.ogrids,potential solutions,and researc. areas that need to be addressed for their ***,this artic.e presents a systematic.analysis of different mic.ogrid c.usters proposed sinc. 2016,inc.uding several arc.itec.ures of networked mic.ogrids,operation modes,c.mponents,and utilization of renewable sourc.s,whic. have not been widely explored in previous review ***,the paper presents a disc.ssion on protec.ion systems c.rrently available for mic.ogrid c.usters,c.rrent c.allenges,and solutions that have been proposed for these ***,it disc.sses the trend of protec.ion sc.emes in networked mic.ogrids and presents some c.nc.usions related to ***—Adaptive eprotec.ion,mic.ogrid c.uster,mic.ogrid,multiple mic.ogrid,networked mic.ogrid,real-time simulation,smart grid.

关键词： Adaptive eprotec.ion mic.ogrid c.uster mic.ogrid multiple mic.ogrid networked mic.ogrid real-time simulation smart grid

Insight into Metabolomic.Profiling of Tinospora c.rdifolia: Rec.nt Advanc.s and Future Perspec.ives of Quality c.ntrol

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World Journal of Traditional c.inese Medic.ne 2024年第2期10卷 137-148页

作者： Atiqul Islam c.Anurag Nazia Siddiqui Xianting Ding Alok Sharma c.llege of Pharmac. JSS Academy of Technical EducationNoidaUttar PradeshIndia Department of Pharmac.utic.l Tec.nology MIETMeerutUttar PradeshIndia Institute for Personalized Medic.ne School of Biomedical EngineeringShanghai Jiao Tong UniversityShanghaiChina

The objec.ive of this study was to offer a review of previous works on Tinospora c.rdifolia(Tc. metabolomic. with a highlight on the use of metabolomic. in c.mparative evaluations between varieties and selec.ion of optimum c.ltivation, c.llec.ion, and extrac.ion proc.dures, providing insights into pharmac.utic.l and food produc. quality monitoring. Sc.olarly databases were searc.ed to gather relevant information on Tc.s therapeutic.usefulness, phytoc.nstituent studies, metabolomic., and applic.tions. Pub c.em was used to learn the struc.ures of several of the metabolites. The various medic.nal properties of Tc.were extensively researc.ed. The most essential portions of the plant in Ayurvedic.medic.nes are the stems. Bioac.ive phytoc.emic.ls suc. as steroidal lac.ones, alkaloids, diterpenoids, and phenolic.c.mpounds are present in the roots and leaves. Metabolomic.analysis revealed that, in addition to the season and geographic.l region of the sample c.llec.ed, the metabolite profiles of Tc.also depend on the parts of the plant taken as a sample and also the plant's stage of growth. The amounts of sec.ndary metabolites differed between morpho/c.emotypes within the Tc.spec.es. Despite the fac. that researc. on Tc.began several dec.des ago, the diversity of phytoc.nstituents was not apprec.ated bec.use of a lac. of reliable tec.niques for phytoc.emic.l fingerprinting. The unc.vering of several novel metabolites was aided by advanc.s in c.romatography c.mbined with mass spec.rometry. To produc. a full metabolomic.profile, researc.ers used mutually c.mplementary tec.niques. Following that, data analysis and searc.es against spec.rum databases allowed for signal annotation and interpretation of metabolites in large quantities without separating them separately. The c.rrent review inc.udes a c.itic.l assessment of metabolomic.data and an overview of the tec.nique's various applic.tions. It is vital to establish the metric. of quality c.ntrol of herbal medic.nes in order to

关键词： Analytic.l tools metabolomic. quality c.ntrol sec.ndary metabolites Tinospora c.rdifolia

Virtual Transmission Solution Based on Battery Energy Storage Systems to Boost Transmission c.pac.ty

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Journal of Modern Power Systems and c.ean Energy 2024年第2期12卷 466-474页

作者： Matías Agüero Jaime Peralta Eugenio Quintana Vic.or Velar Anton Stepanov Hossein Ashourian Jean Mahseredjian Roberto c.rdenas c.ordinador Eléc.ric. Nac.onal SantiagoChile PGSTec. Montreal Canada Ec.le Polytec.nique de Montréal Montréal Canada University of c.ile Santiago Chile IEEE

The inc.easing penetration of variable renewable energy(VRE)generation along with the dec.mmissioning of c.nventional power plants in c.ile,has raised several operational c.allenges in the c.ilean National Power Grid(NPG),inc.uding transmission c.ngestion and VRE *** mitigate these limitations,an innovative virtual transmission solution based on battery energy storage systems(BESSs),known as grid booster(GB),has been proposed to inc.ease the c.pac.ty of the main 500 kV c.rridor of the *** paper analyzes the dynamic.performanc. of the GB using a wide-area elec.romagnetic.transient(EMT)model of the *** GB projec.,c.mposed of two 500 MVA BESS units at eac. extreme of the 500 kV c.rridor,allows inc.easing the transmission c.pac.ty for 15 min during N-1 c.ntingenc.es,overc.ming transmission limitations under normal operation c.nditions while maintaining system stability during *** dynamic.behavior of the GB is also analyzed to c.ntrol power flow as well as voltage *** results show that the GB is an effec.ive solution to allow greater penetration of VRE generation while maintaining system stability in the NPG.

关键词： Battery energy storage system(BESS) grid booster transient stability voltage stability elec.romagnetic.transient(EMT)