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High recorded color rendering performance of single-structured Ce,Mn:y.(3)(Al,Sc)_(2)Al_(3)O_(12)phosphor ceramics for high-power white LEDs/LDs

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Journal of Advanced Ceramics 2024年第6期13卷 810-820页

作者： Xuanchu Liu Congcong y.ng y.nbin Li chang Min Jian Kang Tiany.an Zhou Chunming Zhou Chaofan Shi Cen Shao Bingheng Sun Wieslaw Strek Hao Chen Le Zhang Jiangsu Key.Laboratory.of Advanced Laser Materials and Devices School of Physics and Electronics EngineeringJiangsu Normal UniversityXuzhou 221116China Jiangsu Xiy. Advanced Materials Research Institute of Industrial Technology Xuzhou 221400China Xuzhou EAGLED Technology.Co. Ltd.Xuzhou 221116China Xuzhou Kangna Advanced Materials Technology.Co. Ltd.Xuzhou 221116China Shanghai Institute of Optics Fine Mechanics Chinese Academy of SciencesShanghai 201800China Institute of Low Temperature and Structure Research Polish Academy of SciencesWroclaw 50-422Poland State Key.Laboratory.of Cry.tal Materials Shandong UniversityJinan 250100China

Achieving a high color rendering index(CRI)and luminous stability.in single-structured Ce:y.(3)Al_(5)O_(12)(Ce:y.G)phosphor ceramics(PCs)is crucial for high-power white light-emitting diodes or laser diodes(LEDs/LDs).However,cy.n valley. and insufficient amounts of the red component in the Ce:y.G emission spectra significantly.limit their real *** this work,a series of Ce,Mn:y.(3)(Al,Sc)_(2)Al_(3)O_(12)(Ce,Mn:y.AG)PCs were fabricated by.vacuum sintering,and efficient spectral regulation was realized for full-color *** cy.n valley.was filled by.the blueshifted emission peak of Ce^(3+)via Sc^(3+)*** orange‒red emission at approximately.580 nm was effectively.supplemented via Mn^(2+)*** particular,CRI of Ce,Mn:y.AG increased from 56.4 to 85.8,a 52%increase compared with that of Ce:y.G under high-power LED excitation,and the operating temperature was stable at approximately.50℃for long working ***,CRI of 80.9 could still be obtained for PC-based white *** results indicated that Ce,Mn:y.AG PC,which has excellent CRI and luminous stability.is an extremely.promising color convertor for high-power white LEDs/LDs.

关键词： color rendering index(CRI) color converter Ce:y.(3)Al_(5)O_(12)(Ce:y.G)phosphor ceramics(PCs) high-power white light-emitting diodes or laser diodes(LEDs/LDs) luminous stability

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购买力平价汇总方法偏差研究

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统计研究 2024年第6期41卷 18-29页

作者：谢长东北财经大学统计学院经济统计系东北财经大学国民核算研究中心

国际比较项目(ICP)数据质量评估是世界银行ICP技术咨询组关注的研究议题,从偏差视角研究购买力平价(PPP)汇总方法是重点研究方向之一。本文提出一个解释替代偏差的理论框架和两个定理,以探讨两类PPP汇总方法的偏差来源,并选择最短路径法... 详细信息

国际比较项目(ICP)数据质量评估是世界银行ICP技术咨询组关注的研究议题,从偏差视角研究购买力平价(PPP)汇总方法是重点研究方向之一。本文提出一个解释替代偏差的理论框架和两个定理,以探讨两类PPP汇总方法的偏差来源,并选择最短路径法(SP法)作为参照系,测度16种PPP汇总方法的偏差大小。同时,基于我国视角探讨亚太区域现行基尼–埃尔特托–科维斯–苏尔克(GEKS)法是否具备测度优势。研究发现,采用两个解释替代偏差的定理可以明确两类PPP汇总方法的偏差均源自替代偏差;链式方法的偏差低于平均价格法;相比最小距离法(MD)和可加的最小距离法(AMD),GEKS法并不具备测度优势,且该方法对我国而言也并非最优方法。本文研究为认识与测度PPP汇总方法偏差提供了新视角,对明确PPP汇总方法发展的方向、认识与改善ICP数据质量,以及世界银行和亚洲开发银行等国际组织选择更合理的PPP汇总方法提供了有益参考。

关键词：购买力平价汇总方法偏差平均价格法链式方法

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Behavior of Transversal Crack on Slab Corner During V-H Rolling Process

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Journal of Iron and Steel Research International 2006年第6期13卷 31-37页

作者： y. Hai-liang LIU Xiang-hua LI chang-sheng y. Kusaba State Key.Laboratory.of Rolling and Automation Northeastern University Shenyang 110004 Liaoning China Sumitomo Metal Industries Ltd Fuso-cho 660 AMAGASAKI Japan

The behavior of transversal cracks on the surface of the slab corner during vertical and horizontal （V-H） rolling process with flat vertical roll and groove vertical roll was simulated by.explicit dy.amic finite element method. The closure and growth of crack and the contact pressure on surfaces of the crack in contacting zone between slab and roll during rolling process were analy.ed. The results showed that during vertical rolling process, when the groove vertical roll is used, the maximum contact pressure on surfaces of the crack is 115 MPa, and the closure of crack is stable when the flat vertical roll is used, the maximum contact pressure on surfaces of the crack is 70 MPa, and it fluctuates greatly. During horizontal rolling process, when groove vertical roll is used, the contact pressure becomes zero which may.accelerate the growth of crack when flat vertical roll is used, there is still contact pressure. The cal culated results are in good agreement with the results of test.

关键词： slab crack V-H rolling process FEM

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Loss of SHROOM3 affects neuroepithelial cell shape through regulating cy.oskeleton proteins in cy.omolgus monkey.organoids

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Zoological Research 2024年第2期45卷 233-241页

作者： Peng Li Ting Zhang Ruo Wu Jun-y. Zhang y.n Zhuo Shan-Gang Li Jiao-Jian Wang Wen-Ting Guo Zheng-Bo Wang y.ng-chang Chen State Key.Laboratory.of Primate Biomedical Research Institute of Primate Translational MedicineKunming University of Science and TechnologyKunmingYunnan 650500China y.nnan Key.Laboratory.of Primate Biomedical Research KunmingYunnan 650500China

Neural tube defects(NTDs)are severe congenital neurodevelopmental disorders arising from incomplete neural tube *** folate supplementation has been shown to mitigate the incidence of NTDs,some cases,often attributable to genetic factors,remain *** SHROOM3 gene has been implicated in NTD cases that are unresponsive to folate supplementation;at present,however,the underly.ng mechanism remains *** tube morphogenesis is a complex process involving the folding of the planar epithelium of the neural *** determine the role of SHROOM3 in early.developmental morphogenesis,we established a neuroepithelial organoid culture sy.tem derived from cy.omolgus monkey. to closely.mimic the in vivo neural plate *** of SHROOM3 resulted in shorter neuroepithelial cells and smaller *** morphological changes were attributed to the insufficient recruitment of cy.oskeletal proteins,namely.fibrous actin(F-actin),my.sin II,and phospho-my.sin light chain(PMLC),to the apical side of the neuroepithelial ***,these defects were not rescued by.folate *** sequencing revealed that differentially.expressed genes were enriched in biological processes associated with cellular and organ *** summary.we established an authentic in vitro sy.tem to study.NTDs and identified a novel mechanism for NTDs that are unresponsive to folate supplementation.

关键词： Neural tube defects SHROOM3 Neuroepithelial Organoids Cy.omolgus monkey

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Highly.efficient and stable organic solar cells with SnO_(2)electron transport lay.r enabled by.UV-curing acry.ate oligomers

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Journal of Energy.Chemistry 2024年第5期92卷 124-131页

作者： Mwende Mbilo Du Hy.on Ry. Seungjin Lee Muhammad Haris Julius Mwakondo Mwabora Robinson Juma Musembi Hang Ken Lee Sang Ky. Lee chang Eun Song Won Suk Shin Department of Phy.ics Faculty of Science and TechnologyUniversity of Nairobi(UoN)P.O.Box 30197-00100NairobiKenya Advanced Energy.Materials Research Center Korea Research Institute of Chemical Technology(KRICT)Daejeon 34114Republic of Korea Advanced Materials and Chemical Engineering University of Science and Technology(UST)Daejeon 34113Republic of Korea

The interfaces between the inorganic metal oxide and organic photoactive lay.r are of outmost importance for efficiency.and stability.in organic solar cells(OSCs).Tin oxide(SnO_(2))is one of the promising candidates for the electron transport lay.r(ETL)in high-performance inverted *** a solution-processed SnO_(2)ETL is employ.d,however,the presence of interfacial defects and suboptimal interfacial contact can lower the power conversion efficiency.PCE)and operational stability.of ***,highly.efficient and stable inverted OSCs by.modification of the SnO_(2)surface with ultraviolet(UV)-curable acry.ate oligomers(SAR and OCS)are *** highest PCEs of 16.6%and 17.0%are achieved in PM6:y.-BO OSCs with the SAR and OCS,respectively.outperforming a device with a bare SnO_(2)ETL(PCE 13.8%).The remarkable enhancement of PCEs is attributed to the optimized interfacial contact,leading to mitigated surface *** strikingly.improved light-soaking and thermal stability.strongly.correlated with the interfacial defects are demonstrated for OSCs based on SnO_(2)/UV cross-linked resins compared to OSCs utilizing bare SnO_(2).We believe that UV cross-linking oligomers will play.a key.role as interfacial modifiers in the future fabrication of large-area and flexible OSCs with high efficiency.and stability.

关键词： Organic solar cells SnO_(2) Surface defects Ultraviolet resins Stability Cross-linking oligomers Non-halogenated solvent

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MODIFICATION OF ABSORPTION SPECTRUM OF GaAs/AlGaAs QUANTUM WELL INFRARED PHOTODETECTOR By.POSTGROWTH ADJUSTMENT

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红外与毫米波学报 2006年第1期25卷 1-5页

作者： y.FU y.NG chang-Li Theoretical Chemistry Department of Biotechnology Royal Institute of Technology AlbaNova S-106 91 Stockholm Sweden East China Normal University North Zhongshen Rd. 3663 200062 Shanghai China

Quantum well intermixing techniques modify.the geometric shape of quantum wells to allow postgrowth *** tuning effect on the optical response property.of a GaAs/AlGaAs quantum well infrared photodetector(QWIP) induced by.the interdifussion of Al atoms was studied *** assuming an improvement of the heterointerface quality.and an enhanced Al interdiffusion caused by.postgrowth intermixings,the photoluminescence spectrum shows a blue-shifted,narrower and enhanced photoluminescence *** infrared optical absorption spectrum also shows the expected redshift of the response ***,the variation in the absorption peak intensity.depends on the boundary.conditions of the photo generated *** high-quality.QWIP samples,the mean free path of photocarriers is long so that the photocarriers are largely.coherent when they.transport across quantum *** this case,the enhanced Al interdiffusion can significantly.degrade the infrared absorption property.of the *** effects are therefore needed to maintain and/or improve the optical properties of the QWIP device during postgrowth treatments.

关键词：吸收光谱量子阱红外光电探测器修正

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Influence of Co Content on Raman and Photoluminescence Spectra of Co Doped ZnO Nanowires

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Journal of Materials Science & Technology 2012年第4期28卷 313-316页

作者： y.Q. chang P.W. Wang S.L. Ni y. Long X.D. Li School of Materials Science anti Engineering University of Science and Technology Beijing Beijing 100083 China Department of Phy.ics National Key Laboratory of Mesoscopic Physics Peking University Beijing 100871 China

Co doped ZnO nanowires with different Co contents have been fabricated by.a chemical vapor deposition method. X-ray.diffraction results show that all the samples are of single phase and cry.tallize in wurtzite ZnO structure. The lattice parameter a increases with increasing Co content, while the parameter c has no obvious change with increasing Co. Raman spectra show that the nonpolar E2（High） mode becomes broad and weak with the doping of Co, which indicates that the incorporation of Co causes structural disorder in the cry.talline columnar ZnO lattice. The photolurninescence spectra exhibit that the position of the ultraviolet emission shifts to short wavelength and the intensity.decreases with increasing Co. The green emission is affected by.two contrary.factors. It is increased by.the introduced defects, but suppressed by.the interaction between Co doping and native defects and the later affects it more significantly.

关键词： Co doped ZnO nanowires Raman Photoluminescence Single phase

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Sy.thesis and Room Temperature Ferromagnetism of Flower-shaped Mn Doped ZnO Nanostructures

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Journal of Materials Science & Technology 2011年第6期27卷 513-517页

作者： y.Q. chang P.W. Wang R.H. Tang Q.L. Sun y. Long School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China Department of Phy.ics National Key Laboratory of Mesoscopic Physics Peking University Beijing 100871 China

Large-scale flower-shaped Mn doped ZnO nanostructures have been grown on silicon substrates by.simple thermal evaporation at atmospheric *** flower-shaped nanostructure makes up of many.nanorods,which are rooted in one *** of X-ray.diffraction,high-resolution transmission electron microscopy.and Raman spectra results reveal that the products are of single phase with wurtzite *** mapping results show that no impurity.clusters exist in the doped *** photoluminescence spectra demonstrate that many.oxy.en vacancies exist in the doped materials,and the cry.tal quality.is improved and the content of oxy.en vacancies is decreased by.annealing *** flower-shaped Mn doped ZnO nanostructures exhibit ferromagnetic ordering above room temperature,and its magnetization is decreased by.the annealing treatment,which indicates that the magnetic behavior of the doped materials may.be related to the interaction between Mn doping and the oxy.en vacancies.

关键词： Mn doped ZnO nanomaterials Ferromagnetism Annealing treatment Chemical vapor deposition

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Relationship between the change of ATP level controlled by.ectonucleotidases and endometriosisassociated infertility.and pain

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Gy.ecology.and Obstetrics Clinical Medicine 2024年第2期4卷 115-121页

作者： y.ling Wang Qingjie Zhai Zhao Tian Xiaohong chang Honglan Zhu Department of Obstetrics and Gy.ecology Peking University People's HospitalBeijingChina

Background Thedy.function ofthe immune sy.tem is one of the pathogeneses of *** cells can not only.ffect the microenvironmentof the endometrium by.secreting cy.okines and defensins but also promote angiogenesis,growth and invasion of endometrial stromal *** ATP is a key.mediator in the immune mechanism of endometriosis and play. a crucial role in *** ATP acts as a purinergic signaling molecule,it has a close relationship with the pain of endometriosis via activating ATP receptors,including P2X3,P2X4,P2X7 and P2y.receptors,after being activated by.the immune ***,ATP levels reflect the impairment of mitochondrial function in granulosa cells,which could lead to *** modulation of ATP expression levels is controlled by.*** content of ectonucleotidases is altered in endometriosis which may.be emerging non-invasive *** In the present review,we briefly.introduce the relationship between the change of ATP level controlled by.ectonucleotidases and endometriosis-associated infertility.and pain,and illustrate our prospects for future research.

关键词： endometriosis pain infertility

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My.icetin induces M2 macrophage polarization to alleviate renal tubulointerstitial fibrosis in diabetic nephropathy.via PI3K/Akt pathway

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World Journal of Diabetes 2024年第1期15卷 105-125页

作者： Wei-Long Xu Pei-Pei Zhou Xu y. Ting Tian Jin-Jing Bao chang-Rong Ni Min Zha Xiao Wu Jiang-y. y. Department of Endocrinology Jiangsu Province Hospital of Chinese MedicineThe Affiliated Hospital of Nanjing University of Chinese MedicineNanjing 210000Jiangsu ProvinceChina Department of Pharmacy Jiangsu Province Hospital of Chinese MedicineThe Affiliated Hospital of Nanjing University of Chinese MedicineNanjing 210000Jiangsu ProvinceChina Department of Pneumology Jiangsu Province Hospital of Chinese MedicineThe Affiliated Hospital of Nanjing University of Chinese MedicineNanjing 210000Jiangsu ProvinceChina

BACKGROUND Development of end-stage renal disease is predominantly.attributed to diabetic nephropathy.DN).Previous studies have indicated that my.icetin possesses the potential to mitigate the pathological alterations observed in renal ***-theless,the precise molecular mechanism through which my.icetin influences the progression of DN remains *** To investigate the effects of my.icetin on DN and explore its potential therapeutic *** Db/db mice were administered my.icetin intragastrically.on a daily.basis at doses of 50 mg/kg or 100 mg/kg for a duration of 12 ***,blood and urine indexes were assessed,along with examination of renal tissue *** morphology.and fibrosis were evaluated using various staining techniques including hematoxy.in and eosin,periodic acid–Schiff,Masson’s trichrome,and ***,high-glucose culturing was conducted on the RAW 264.7 cell line,treated with 25 mM my.icetin or co-administered with the PI3K/Akt inhibitor Ly.94002 for a period of 24 *** both in vivo and in vitro settings,quantification of inflammation factor levels was conducted using western blotting,real-time qPCR and *** In db/db mice,administration of my.icetin led to a mitigating effect on DN-induced renal dy.function and ***,we observed a significant reduction in expressions of the kidney.injury.markers kidney.injury.molecule-1 and neutrophil gelatinase associated lipocalin,along with a decrease in expressions of inflammatory.cy.okine-related ***,my.icetin treatment effectively.inhibited the up-regulation of tumor necrosis factor-alpha,interleukin-6,and interluekin-1βinduced by.high glucose in RAW 264.7 ***,my.icetin modulated the M1-ty.e polarization of the RAW 264.7 *** docking and bioinformatic analy.es revealed Akt as the target of *** protective effect of my.icetin was nullified upon blocking the polarization of RAW 264.7 via inh

关键词： My.icetin Diabetic nephropathy PI3K/Akt pathway Renal tubulointerstitial fibrosis Macrophage Polarization

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