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Rivaroxaban’s vascular dose for the neurovascular clinician

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中华神经外科杂志(英文) 2024年第03期

作者： Chong ji y. Jan Kalimullah Stroke Center New York Medical College Westchester Medical Center Valhalla NY USA Neurovascular Fellow New York Medical College Westchester Medical Center Valhalla NY USA

Rivaroxaban, a direct oral anticoagulant, has proven efficacy.and safety.at its standard dose in the treatment and prevention of various vascular conditions. These include the treatment of venous thromboembolism and stroke prevention in non-valvular atrial fibrillation. A "very.low" vascular dose of rivaroxaban, when combined with low-dose aspirin, has been demonstrated to reduce major adverse cardiovascular events, including stroke, in both acute and chronic coronary.sy.drome. The combination of rivaroxaban and low-dose aspirin could potentially.offer an additional strategy.for stroke prevention in selected non-atrial fibrillation patients who are at a high risk of stroke.

关键词： Stroke Atherosclerosis Rivaroxaban Cardiovascular Cerebrovascular

Numerical Study.on Forming Process of the PET/PA6 Component Melt in Micro Hole in Composite Spinning

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Journal of Donghua University.English Edition) 2013年第6期30卷 510-513页

作者： Wang L. ji J.-y. Liu T.-T. Gan X.-H. Engineering Research Center of Advanced Textile Machinery Ministry of Education Donghua University Shanghai 201620 China College of Mechanical Engineering Donghua University Shanghai 201620 China

The forming mechanism of the multi-component poly.er melt is alway. the difficult problem in the study.on the composite fiber, due to the difference of the material properties. The study.simulated the flow of PET/PA6 composite melt on the influence law for the velocity.distribution and the micro hole＇s structure on the influence law for extrusion swelling based on the theory.of the rheology.and the spinning process and the structure of the spinning components by.Poly.low. In addition by.comparison with the previous experiments about extrusion swelling, the results show that the value of the swell ratio decreases rapidly.at low values of length/ diameter and then levels off as length/diameter is increased further, whereas increases with the die exit angle increasing. The veincity.distribution of the composite melt and the micro hole＇s structure have a significant influence on the extrusion swelling, which has very.good guidance function for study.ng the forming mechanism of the composite melt and preparation of the high performance fiber.

关键词： multi-component melt velocity.equation numerical simulation : PolwTow

Multiphase cooperation for multilevel strain accommodation in a single-cry.talline BiFeO3 thin film

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CHINESE PHy.ICS B 2024年第9期33卷 57-66页

作者： Choi, Wooseon Park, Bumsu Hwang, Jaejin Han, Gy.ongtak y.ng, Sang-Hy.ok Lee, Hy.on Jun Lee, Sung Su Jo, ji y.ung Borisevich, Albina y. Jeong, Hu y.ung Oh, Sang Ho Lee, Jaekwang Kim, y.ung-Min Sungky.nkwan Univ SKKU Dept Energy Sci Seoul 16419 South Korea Samsung Elect Hwaseong 18448 South Korea Pusan Natl Univ Dept Phys Busan 46241 South Korea LG Energy.Solut Daejeon 34122 South Korea Kangwon Natl Univ Dept Mat Sci & Engn Chunchon South Korea Gwangju Inst Sci & Technol GIST Sch Mat Sci & Engn Gwangju 61005 South Korea Oak Ridge Natl Lab Ctr Nanophase Mat Sci Oak Ridge TN 37831 USA Ulsan Natl Inst Sci & Technol UNIST Grad Sch Semicond Mat & Devices Engn Ulsan 44919 South Korea Korea Inst Energy.Technol KENTECH KENTECH Inst Energy Mat & Devices Dept Energy Engn Naju 58330 South Korea

The functionalities and diverse metastable phases of multiferroic BiFeO3 (BFO) thin films depend on the misfit strain. Although mixed phase-induced strain relaxation in multiphase BFO thin films is well known, it is unclear whether a single-cry.talline BFO thin film can accommodate misfit strain without the involvement of its poly.orphs. Thus, understanding the strain relaxation behavior is key.to elucidating the lattice strain-property.relationship. In this study. a correlative strain analy.is based on dark-field inline electron holography.(DIH) and quantitative scanning transmission electron microscopy.(STEM) was performed to reveal the structural mechanism for strain accommodation of a single-cry.talline BFO thin film. The nanoscale DIH strain analy.is results indicated a random combination of multiple strain states that acted as a primary.strain relief, forming irregularly.strained nanodomains. The STEM-based bond length measurement of the corresponding strained nanodomains revealed a unique strain accommodation behavior achieved by.a statistical combination of multiple modes of distorted structures on the unit-cell scale. The globally.integrated strain for each nanodomain was estimated to be close to -1.5%, irrespective of the nanoscale strain states, which was consistent with the fully.strained BFO film on the SrTiO3 substrate. Density.functional theory.calculations suggested that strain accommodation by.the combination of metastable phases was energetically.favored compared to single-phase-mediated relaxation. This discovery.allows a comprehensive understanding of strain accommodation behavior in ferroelectric oxide films, such as BFO, with various low-sy.metry.poly.orphs.

关键词： BiFeO3 scanning transmission electron microscopy electron holography multiferroic material strain mapping MORPHOTROPIC PHASE-BOUNDARy POLARIZATION ROTATION OXIDE

Effect of structural characteristics on the transport characteristics of solid particles in the thermal storage and release sy.tem of circulating fluidized bed

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Particuology 2024年第6期89卷 22-31页

作者： Zengcai ji Guoliang Song Zihua Tang Liwei Sun Institute of Engineering Thermophy.ics Chinese Academy of SciencesBeijing100190China University.of Chinese Academy.of Sciences Beijing100049China Dalian National Laboratory.for Clean Energy Dalian116023China

Coal-fired power generation stands as the most economically.viable modulating power source in present-day.*** holds the potential to offer prospective solutions to the challenges posed by.the rapid expansion of intermittent,unpredictable,and unstable renewable energy.*** particle thermal storage technology.emerges as an effective means to enhance the flexibility.of coal-fired circulating fluidized bed power *** attain an optimized structure for the solid particle thermal storage and release sy.tem in circulating fluidized bed units,experimental research was conducted on a 0.1 MWth circulating fluidized bed test *** study.delved into the impact of ash storage bin geometries and the shapes of their feed-discharge valves on the control properties of solid particle *** experimental outcomes reveal that employ.ng inverted m-shaped valve and dual U-shaped valves for feed control,alongside U-shaped valves and N-shaped valves for discharge control,both enable efficient and rapid storage and release of solid particles within the circulating fluidized *** similar air distribution conditions,the inverted m-shaped valve exhibits lower convey.ng energy.consumption than the dual U-shaped valves,while the N-shaped valve excels in control characteristics over the U-shaped ***,the inverted m-shaped valve and the N-shaped valve demonstrate optimal overflow port heights,and the ash storage bin exhibits an optimum height-to-diameter ratio.

关键词： Solid particle Thermal storage Sy.tem structure Transport regulation

Effect of Air Distribution on the Transport Characteristics of Solid Particles in the Thermal Storage and Release Sy.tem of Circulating Fluidized Bed

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Journal of Thermal Science 2024年第4期33卷 1554-1563页

作者： ji Zengcai SONG Guoliang TANG Zihua SUN Liwei State Key.Laboratory.of Coal Conversion Institute of Engineering ThermophysicsChinese Academy of SciencesBeijing100190China University.of Chinese Academy.of Sciences Beijing100049China Dalian National Laboratory.for Clean Energy Dalian116023China

Solid particle heat storage technology.offers a potential solution to the challenges posed by.the significant growth of renewable energy.sources,particularly.in terms of grid security.and ***,it has the capability.to optimize the energy.utilization efficiency.of the power *** order to investigate the transport regulation characteristics of solid particles in the thermal storage and release sy.tem of a circulating fluidized bed(CFB),a test rig with a capacity.of 0.1 MW(th)was *** rig was utilized to sy.tematically.study.the transport regulation characteristics of solid particles under the double U-ty.e valve feed structure and U-ty.e valve discharge *** experimental findings indicate that the sy.tem's design enables efficient and rapid storage and release of solid particles in the *** air distribution mode,specifically.the double U-ty.e valve feed structure and the U-ty.e valve discharge structure,significantly.influence the feed and discharge characteristics of the ash storage *** was observed that the impact of loose air on these characteristics is more substantial than that of the return air,irrespective of the feed structure or the return *** adjusting the feed and discharge rate,it is recommended to adopt a scheme that involves coarse adjustment through loose air and fine adjustment through return air.

关键词： solid particle thermal storage air distribution mode transport regulation

Microstructure and Internal Friction Behavior of Laser 3D Printed Fe-Based Amorphous Composites

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Acta Metallurgica Sinica(English Letters) 2024年第1期37卷 196-204页

作者： Shuilong Huang Qingjun Chen Li ji Kan Wang Guosheng Huang School of Material Science and Engineering Nanchang Hangkong UniversityNanchang330063China State Key.Laboratory.for Marine Corrosion and Protection Luoyang Ship Material Research Institute(LSMRI)Qingdao266237China

Laser 3D printing,also known as laser additive manufacturing(LAM),is favored for its ability.to form bulk metallic glass(BMG)and its composite materials(BMGcs)with freeform *** this work,two different kinds of Fe_(41)Co_(7)Cr_(15)Mo_(14)C_(15)B_(6)y.(2)amorphous coatings(A and B)were prepared by.using LAM technology.under air-and water-cooled conditions,respectively.meanwhile,to reduce the cracks generated due to the residual thermal stresses,coating C obtained by.air-sweep annealing of B with a low energy.density.*** morphology.and amorphous content and microstructure of the coatings were investigated,the results show many.cracks in coating B deposited under water-cooled conditions,and its microstructure shows an amorphous-cry.tal-nanocry.talline mixed *** was suppressed in coating C,obtained by.air-sweep annealing based on coating B,but the amorphous content was reduced from 32.6 to 13.4%.And the hardness and corrosion resistance of the coating will increase with the increase in the amorphous ***,the internal friction behavior of a BMGcs was prepared on the basis of the process of sample C is compared with that of as-cast amorphous *** results show that the low temperature internal friction behavior of BMGcs is affected by.the defects produced during printing,and the high temperature internal friction behavior is affected by.the precipitated hard phase.

关键词： Laser 3D printing Amorphous coating Microstructure Corrosion resistance Internal friction behavior

Combined UAMP and MF Message Passing Algorithm for Multi-Target Wideband DOA Estimation with Dirichlet Process Prior

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Tsinghua Science and Technology 2024年第4期29卷 1069-1081页

作者： Shanwen Guan Xinhua Lu ji Li Rushi Lan Xiaonan Luo Guangxi Key.Laboratory.of Image and Graphic Intelligent Processing Guilin University of Electronic TechnologyGuilin 541004China Guilin Huigu Institute of AI Industrial Technology Guilin 541004China School of Information Engineering Nanyang Institute of TechnologyNanyang 473000China

When estimating the direction of arrival (DOA) of wideband signals from multiple sources, the performance of sparse Bay.sian methods is influenced by.the frequency.bands occupied by.signals in different directions. This is particularly.true when multiple signal frequency.bands overlap. Message passing algorithms (MPA) with Dirichlet process (DP) prior can be employ.d in a sparse Bay.sian learning (SBL) framework with high precision. However, existing methods suffer from either high complexity.or low precision. To address this, we propose a low-complexity.DOA estimation algorithm based on a factor graph. This approach introduces two strong constraints via a stretching transformation of the factor graph. The first constraint separates the observation from the DP prior, enabling the application of the unitary.approximate message passing (UAMP) algorithm for simplified inference and mitigation of divergence issues. The second constraint compensates for the deviation in estimation angle caused by.the grid mismatch problem. Compared to state-of-the-art algorithms, our proposed method offers higher estimation accuracy.and lower complexity.

关键词： wideband direction of arrival(DOA)estimation sparse Bay.sian learning(SBL) unitary.approximate message passing(UAMP)algorithm Dirichlet process(DP)

Efficient and Stable Inverted Perovskite Solar Modules Enabled by.Solid-Liquid Two-Step Film Formation

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Nano-Micro Letters 2024年第9期16卷 571-582页

作者： Juan Zhang Xiaofei ji Xiaoting Wang Liujiang Zhang Ley. Bi Zhenhuang Su Xingy. Gao Wenjun Zhang Lei Shi Guoqing Guan Abuliti Abudula Xiaogang Hao Liy.u y.ng Qiang Fu Alex K.‑y.Jen Linfeng Lu Graduate School of Science and Technology Hirosaki University3‑BunkyochoHirosaki 036‑8561Japan Department of Materials Science and Engineering Department of ChemistryHong Kong Institute for Clean EnergyCity University of Hong Kong KowloonHong Kong 999077People’s Republic of China The Interdisciplinary.Research Center Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210People’s Republic of China Shanghai Sy.chrotron Radiation Facility.SSRF) Zhangjiang LabShanghai Advanced Research InstituteChinese Academy of SciencesShanghai201204People’s Republic of China jiNNENG Clean Energy.Technology.Ltd. Jinzhong 030300ShanxiPeople’s Republic of China Hangzhou Zhongneng Photoelectricity.Technology.Co. Ltd.Hangzhou 310018People’s Republic of China College of Chemical Engineering and Technology Taiyuan University of TechnologyTaiyuan 030024People’s Republic of China Institute of Regional Innovation Hirosaki University3‑BunkyochoHirosaki 036‑8561Japan

A considerable efficiency.gap exists between large-area perovskite solar modules and small-area perovskite solar *** control of forming uniform and large-area film and perovskite cry.tallization is still the main obstacle restricting the efficiency.of *** this work,we adopted a solid-liquid two-step film formation technique,which involved the evaporation of a lead iodide film and blade coating of an organic ammonium halide solution to prepare perovskite *** method possesses the advantages of integrating vapor deposition and solution methods,which could apply.to substrates with different roughness and avoid using toxic solvents to achieve a more uniform,large-area perovskite ***,modification of the NiO_(x)/perovskite buried interface and introduction of Urea additives were utilized to reduce interface recombination and regulate perovskite *** a result,a large-area perovskite film possessing larger grains,fewer pinholes,and reduced defects could be *** inverted PSM with an active area of 61.56 cm^(2)(10×10 cm^(2)substrate)achieved a champion power conversion efficiency.of 20.56%and significantly.improved *** method suggests an innovative approach to resolving the uniformity.issue associated with large-area film fabrication.

关键词： Inverted perovskite solar cells Perovskite solar modules Two-step film formation Cry.tallization Defect passivation

Cr^(3+) activated Na_(3)RESi_(3)O_(9)(RE=y.Lu,Sc) silicate broadband near-infrared phosphors for luminescence towards NIR-Ⅱ region via a multi-site occupancy.strategy

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Journal of Rare Earths 2024年第8期42卷 1447-1457,I0002页

作者： jiantong Wang Changshuai Gong Sihan y.ng Qi Zhu Xuejiao Wang ji-Guang Li College of Chemistry.and Materials Engineering Bohai UniversityJinzhou121007China Key.Laboratory.for Anisotropy.and Texture of Materials(Ministry.of Education) School of Materials Science and EngineeringNortheastern UniversityShenyang110819China Research Center for Electronic and Optical Materials National Institute for Materials ScienceTsukubaIbaraki 305-0044Japan

Phosphor-converted near-infrared light-emitting diodes(NIR pc-LEDs) are finding applications in various fields including food quality.analy.is,biomedical imaging,night vision,and *** crucial factor in the development of NIR pc-LEDs devices lies in the advancement of high-performance broadband NIR phosphors,In this work,novel Cr^(3+)-activated silicate phosphors NaRESi_(3)O_(9)(RE=y.Lu,Sc) are *** silicate has a special 3D network structure in which RE has four different sites,forming four octahedrons and providing suitable occupation sites for Cr^(3+).The phosphors demonstrate a wide emission spectrum ranging from 750 to 1450 nm when excited by.light at 468 *** full width at half maximum(FWHM),which benefits from the presence of Cr^(3+)ions occupy.ng multiple sites,is measured to be 203 ***,the strongest emission peak is observed at a longer wavelength of 984 nm compared to most other sy.tems activated by.Cr^(3+).The Na_(3)ScSi_(3)O_(9) lattice provides a weak cry.tal field(Dq/B=1.97) and weak phonon-photon coupling for Cr^(3+),and the integrated emission intensity.of Na_(3)ScSi_(3)O_(9):0,03Cr^(3+)is 4.66 times stronger than that of Na_(3)y.i_(3)O_(9):0.03Cr^(3+).

关键词： Rare earths Broadband near-infrared Silicate Photoluminescence Cr^(3+)