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Exploring fs-laser irradiation damage subthreshold behavior of dielectric mirrors via electrical measurements

High Power Laser Science and Engineering 2024年第2期12卷 24-32页

作者： Petrisor Gabriel Bleotu Radu Udrea Alice dumitru Olivier Uteza Maria-diana Mihai dan gh Matei daniel Ursescu Stefan Irimiciuc Valentin Craciun Extreme Light Infrastructure-Nuclear Physics(ELI-NP) Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering(IFIN-HH)MagureleRomania doctoral School of Physics University of BucharestMagureleRomania LULI-CNRS CEAUniversite SorbonneEcole PolytechniqueInstitut Polytechnique de ParisPalaiseau CEDEXFrance Apel Laser IlfovRomania Aix-Marseille University CNRSLP3 UMR 7341MarseilleFrance Horia Hulubei National Institute for R&d in Physics and Nuclear Engineering(IFIN-HH) MagureleRomania University Politehnica of Bucharest BucharestRomania National Institute for Lasers Plasma and Radiation Physics MagureleRomania

With ultrafast laser systems reaching presently 10 PW peak power or operating at high repetition rates,research towards ensuring the long-term,trouble-free performance of all laser-exposed optical components is *** work is focused on providing insight into the optical material behavior at fluences below the standardized laser-induced damage threshold(LIdT)value by implementing a simultaneous dual analysis of surface emitted particles using a Langmuir probe(LP)and the target current(TC).HfO_(2) and ZrO_(2) thin films deposited on fused silica substrates by pulsed laser deposition at various O_(2) pressures for defect and stoichiometry control were irradiated by Gaussian,ultrashort laser pulses(800 nm,10 Hz,70 fs)in a wide range of *** TC and LP collected signals were in good agreement with the existing theoretical description of laser–matter interaction at an ultrashort time *** approach for an in situ LIdT monitoring system provides measurable signals for below-threshold irradiation conditions that indicate the endurance limit of the optical surfaces in the single-shot energy scanning *** LIdT value extracted from the LP-TC system is in line with the multipulse statistical analysis done with ISO 21254-2:2011(E).The implementation of the LP and TC as on-shot diagnostic tools for optical components will have a significant impact on the reliability of next-generation ultrafast and high-power laser systems.

关键词： HfO_(2) in situ detection Langmuir probe laser-induced damage threshold target current ZrO_(2)

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Hydrogen Storage Capacity of C120 Nanocapsules： density Functional Theory Based Treatments

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Communications in Theoretical Physics 2011年第3期55卷 519-526页

作者： M.d. Ganji gh. Valizadeh M. Jahan-tigh department of Chemistry Islamic Azad University Ghaemshahr Branch Mazandaran Iran

纯 C120 nanocapsule 并且 endohedrally 的外部表面上的氢分子的吸附 H2@C120 建筑群用密度被检验了功能的理论计算。几种不同结合配置为接近考虑 nanocages 的外部表面的氢分子被考虑。当时，吸附的 H2 分子与最近的试验性、理论的结... 详细信息

纯 C120 nanocapsule 并且 endohedrally 的外部表面上的氢分子的吸附 H2@C120 建筑群用密度被检验了功能的理论计算。几种不同结合配置为接近考虑 nanocages 的外部表面的氢分子被考虑。当时，吸附的 H2 分子与最近的试验性、理论的结果一致微弱地跳了到纯 C120 nanocapsules 的外部表面，这被发现了当时，它喜欢在方面墙上相当强烈被吸附 endohedrally H2@C120 建筑群。单个层的吸附和考虑 H2@C120 建筑群的最稳定的状态上的二个 H2 分子的双性人层看起来可行，尽管第二层的分子是弱固定的。而且， 100% 范围的形成热力学地是有利的，这被发现，它由 H2 分子的重量存储对应于大约 20% 。令人惊讶地，因此，我们到达 C120 nanocapsules 能为精力存储作为新奇材料被实现的预言。

关键词：密度泛函理论纳米胶囊氢分子存储容量治疗基础表面分子计算结果

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THE GLOBAL dUFORT-FRANKEL dIFFERENCE APPROXIMATION FOR NONLINEAR REACTION-dIFFUSION EQUATIONS

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Journal of Computational Mathematics 1998年第3期16卷 275-288页

作者： Lu, BN Wan, gh Guo, BL Xiangtan Univ Inst Computat & Appl Math Xiangtan 411105 Peoples R China Inst Appl Phys & Computat Math Lab Computat Phys Beijing 100088 Peoples R China Shaanzi Normal Univ Dept Math Xian 710062 Peoples R China Inst Appl Phys & Computat Math Ctr Nonlinear Studies Beijing 100088 Peoples R China

In this paper, the initial value problem of nonlinear reaction-diffusion equation is considered. The dufort-Frankel finite difference approximation for the long time scheme is given for the d-dimensional reaction-diffusion equation with the two different cases. The global solution and global attractor are discussed for the dufort-Frankel scheme. Moreover properties of the solution are studied. The error estimate is presented in a finite time region and in the global time region for some special cases. Finally the numerical results for the equation are investigated for Allen-Cahn equation and some other equations and the homoclinic orbit is simulated numerically.

关键词： global dufort-Frankel method reaction-diffusion equation global attractor error estimate numerical experiments

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Behavior and characteristics of compacted expansive unsaturated bentonite-sand mixture

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Journal of Rock Mechanics and Geotechnical Engineering 2016年第5期8卷 629-639页

作者： Mohammed Y.Fattaha Aysar H.S.Al-lami department of Building and Construction Engineering University of TechnologyBaghdadIraq department of Civil Engineering University of BaghdadBaghdadIraq

Limited studies dealt with the expansive unsaturated soils in the case of large-scale model close to the field conditions and therefore, there is much more room for improvement. In this study, expansive （bentonite–sand （B–S） mixture） and non-expansive （kaolin） soils were tested in different water contents and dry unit weights chosen from the compaction curve to examine the effect of water content change on soil properties （swelling pressure, expansion indices, shear strength （soil cohesion） and soil suction） for the small soil samples. Large-scale model was also used to show the effect of water content change on different relations （swelling and suction with elapsed time）. The study reveals that the initial soil conditions （water content and dry unit weight） affect the soil cohesion, suction and swelling, where all these parameters slightly decrease with the increase in soil water content especially on the wet side of optimum water content. The settlement of each soil at failure increases with the increase in soil degrees of saturation since the matric suction reduces the soil ability to deform. The settlement observed in B–S mixture is higher than that in kaolin due to the effect of higher swelling observed in B–S mixture and the huge amount of water absorbed which transformed the soil to highly compressible soil. The matric suction seems to decrease with elapsed time from top to bottom of tensiometers due to the effect of water flowing from top of the specimen. The tensiometer reading at first of the saturation process is lower than that at later period of saturation （for soil sample B–S3, the tensiometer #1 took 3 d to drop from 93 kPa to 80 kPa at early stage, while the same tensiometer took 2 d to drop from 60 kPa to 20 kPa）.

关键词： Clay Expansive unsaturated soils Swelling Suction

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A new route to the synthesis of thieno[2,3-d]pyrimidin-4(3H)-one derivatives catalyzed by 12-tungstophosphoric acid (H_3PW_(12)O_(40))

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Chinese Chemical Letters 2007年第12期18卷 1483-1486页

作者： A.davoodnia M.Bakavoli gh.Barakouhi N.Tavakoli-Hoseini department of Chemistry School of SciencesIslamic Azad UniversityMashhad 91735-413Iran

Heteropoly acid H3PW12040 （PW） has been used as an effective catalyst for the synthesis of thieno[2,3-d]pyrimidin-4（3H）-one derivatives. The present methodology offers several advantages, such as high yields, shor... 详细信息

关键词： Thieno[2,3-d]pyrimidin-4(3H)-one Heteropoly acid 12-Tungstophosphoric acid Orthoesters

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GdNF cdNA-engineered NIH 3T3 cells protect primary dopaminergic neurons

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Chinese Science Bulletin 1997年第22期42卷 1921-1925页

作者： Ma, dd Wang, XM Jing, XJ Wang, J Xiong, L Song, H Wan, Y Xu, gh Sun, QL Cai, d Wang, XH Han, JS Beijing Med Univ Neurosci Res Ctr Beijing 100083 Peoples R China

IN vitro and in vivo experiments show the protective effects of glial cell line-derived neu-rotrophic factor (GdNF) on dopaminergic (dA) neurons are potent and relatively specif-ic. However, GdNF protein is not small ... 详细信息

关键词： GdNF Parkinson’s disease engineering cells dopaminergic neurons.

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Influence of Oscillation Frequency of a Sieve on the Screening Process for a Conical Sieve with Oscillatory Circular Motion

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Journal of Agricultural Science and Technology(B) 2011年第8期1卷 1224-1231页

作者： gh. Voicu d. Stoica N. Ungureanu Faculty of Biotechnical Systems Engineering ＂Politehniea＂ University of Bucharest Splaiul Independentei 313 Bucharest 060042Romania

Removal of foreign bodies from seed mixtures, or their calibration for use as planting material, as well as fraction classification of granular materials requires screening surfaces with vibratory motion. This paper presents some aspects on the working process of a sieve, made of perforated sheet and having an outer conical surface with oscillatory circular motion (alternative) on the horizontal. Results are presented for some experimental researches on the movement of material on the sieve, for various kinematical parameters of the sieve (amplitude and oscillation frequency). A conical sieve, suspended at the upper and lower in three points, was tested for screening of rapeseeds in order to estimate the influence of oscillation frequency on the screening process. Curves were drawn for separation intensity on the sieve generating line, and by regression analysis with normal distribution law were determined the equation coefficients and the correlation with experimental data. Movement of material on the sieve and its working process, in general, was appreciated by means of the peak position of distribution curve depending on the oscillation frequency of the sieve, considering that the normal distribution law correlates very well the data obtained by experiments.

关键词：振荡频率圆周运动表面振动锥形筛筛选实验数据分布规律颗粒状物料

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Meeting report:a hard look at the state of enamel research

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International Journal of Oral Science 2017年第4期9卷 193-199页

作者： ophir d klein olivier duverger wendy shaw rodrigo s lacruz derk joester janet moradian-oldak megan k pugach j timothy wright sarah e millar ashok b kulkarni john d bartlett thomas gh diekwisch pamela den besten james p simmer program in craniofacial biology and department of orofacial sciences university of californiasan franciscoSan FranciscoUSA department of pediatrics and institute for human genetics university of californiasan franciscoSan FranciscoUSA laboratory of skin biology national institute of arthritis and muscular and skin diseasesnational institutes of healthBethesdaUSA physical science division pacific northwest national laboratoriesRichlandUSA department of basic science and craniofacial biology new york university college of dentistryNewYorkUSA department of materials science and engineering northwestern universityevanstonusaEvanstonUSA center for craniofacial molecular biology herman ostrow school of dentistryuniversity of southern californiaLos AngelesUSA the forsyth institute CambridgeUSA department of developmental biology harvard school of dental medicineBostonUSA department of pediatric dentistry university of north caroline school of dentistryChapel HillUSA departments of dermatology and cel&developmental biology perelman school of medicineand department of anatomy&cell biologyschool of dental medicineuniversity of pennsylvaniaPhiladelphiaUSA functional genomics section national institute of dental and craniofacial researchBethesdaUSA division of biosciences ohio state universitycollege of dentistryColumbusUSA department of periodontics and center for craniofacial research and diagnosis texas a&m university college of dentistryDallasUSA center for children’s oral health research and department of orofacial sciences university of californiasan franciscoSan FranciscoUSA biologic and materials sciences and division of prosthodontics university of michiganAnn ArborUSA

The Encouraging Novel Amelogenesis Models and Ex vivo cell Lines （ENAMEL） development workshop was held on 23 June 2017 at the Bethesda headquarters of the National institute of dental and Craniofacial Research （NIdCR）. discussion topics included model organisms, stem cells/cell lines, and tissues/3d cell culture/organoids. Scientists from a number of disciplines, representing institutions from across the United States, gathered to discuss advances in our understanding of enamel, as well as future directions for the field.

关键词： enamel mineralized tissue mineralization ameloblast stem cell

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Situation and Strategies of the Maternal and Infant Health in Tunisia

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Journal of Reproduction and Contraception 2005年第1期16卷 57-64页

作者： Gueddana N ghérissi A Esseghari R General director. National Board for Family and Population. Tunisia Unit of research on evaluation in health. département de Médecine Communautaire B. Facultéde Médecìnede Tunis Tunisia International Training and Research Centre on Reproductive Health. National Board for Family and Population Tunisia

This paper presents then makes a retrospective and descriptive evaluation of the Tunisian strategy implemented to reduce maternal and infant mortality and morbidity. The objectives of this bibliography work are to make a diagnosis of the situation of the maternal and infant mortality and morbidity, to develop the philosophy and the orientations of the strategic axis and to underline the keys of the success as well as the limits of the strategy.

关键词： maternal mortality neonatal morbidity monitoring maternal deaths causes of maternal deaths

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Performance Analysis of 2d RAC Product Codes In Block Coded Modulation Schemes

Performance Analysis of 2D RAC Product Codes In Block Coded ...

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IEEE 2005 International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications

作者： lami Kaya department of Computer Science, Sharjah University PO Box 27272, Sharjah, United Arab Emirates

A block coded modulation (BCM) scheme employing two-dimensional (2d) product codes, constructed from single parity check (SPC) sub-codes is described. A procedure for mapping encoded sequences to M-PS

关键词： Product Codes, RAC Array Codes, Block Coded Modulation

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