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3D printing of optical materials by processes based on photopolymerization:materials,technologies,and recent advances

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Photonics Research 2022年第6期10卷 1344-1360页

作者： EMMA GEISLER MAXIME LECOMPèRE olivier SOPPERA Universitéde Haute-Alsace CNRSIS2M UMR 7361F-68100 MulhouseFrance Universitéde Strasbourg F-67000 StrasbourgFrance Essilor International 94000 CréteilFrance

3D printing technologies have expanded beyond the research laboratories where they were used solely for prototyping and have become widely used in several *** production of custom 3D objects has significant potential in optical ***,this necessitates extremely specific material properties,such as transparency,homogeneity,birefringence,and surface ***,the majority of optical objects are manufactured using ***,the 3D printing processes using polymers to produce optical objects have significant advantages,such as limited wastage,short manufacturing time,and easy ***,despite extensive efforts,no technology has achieved the production of objects perfectly suited for optical *** objective of this review is to summarize recent advances in the field of 3D printing for optics,with an emphasis on specific developments for dedicated applications,and to explore new candidate processes.

关键词： printing expanded transparency

Three-way Subsynchronous Torsional Interactions Between LCC HVDC,MMC HVDC and a Thermal Generator

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现代电力系统与清洁能源学报(英文) 2023年第4期11卷 1331-1340页

作者： Stefan Kovacevic Dragan Jovcic Pierre Rault olivier Despouys School of Engineering University of AberdeenAberdeen AB243UEU.K. Réseau de Transport d’Électricité ParisFrance

This paper performs a study on three-way subsynchronous torsional interactions(SSTI)between a hybrid dual-infeed high-voltage direct current(HVDC)system and a nuclear *** test case is based on the French IFA2000 line commutated converter(LCC)HVDC(2 GW)and the new Eleclink modular multilevel converter(MMC)HVDC(1 GW)interacting with the Gravelines generator(1 GW).The analysis is performed by the means of the eigenvalue stability assessment on an analytical model,while the accuracy of the conclusions is verified using the detailed non-linear electromegnetic transient program(EMTP)*** study shows that the dual-infeed system may introduce higher risk of the SSTI compared with the point-to-point HVDC *** shows that MMC operating as static synchronous compensator(STATCOM)may further reduce the torsional damping at 6.3 Hz *** conclusion may be unexpected since it is known fact from literature that STATCOM has a beneficial impact on the transient performance of *** studies show that in a sequential HVDC loading,it may be beneficial to load the MMC HVDC ***,the risk of the SSTI may be minimized by changing HVDC controller gains,in particular,by increasing phaselocked-loop(PLL)gains on the LCC rectifier.

关键词： Subsynchronous torsional interaction(SSTI) eigenvalue stability hybrid dual-infeed high-voltage direct current(HVDC) line commutated converter(LCC) modular multilevel converter(MMC) nuclear generator

No touch radiofrequency ablation for hepatocellular carcinoma:a conceptual approach rather than an iron law

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Hepatobiliary Surgery and Nutrition 2022年第1期11卷 132-135页

作者： olivier Seror Unitéde Radiologie Interventionnelle Hôpital AvicenneHôpitaux Universitaires Paris-Seine-Saint-DenisAssistance Publique Hôpitaux de ParisBobignyFrance UnitéMixte de Recherche 1162 Génomique Fonctionnelle des Tumeurs SolidesInstitut National de la Santéet de la Recherche MédicaleParis 7ParisFrance Unitéde Formation et de Recherche SantéMédecine et Biologie Humaine UniversitéParis 13Communautéd’Universités et Etablissements Sorbonne Paris CitéBobignyFrance

Using conventional intra-tumoral radiofrequency ablation(IT-RFA)for the treatment of hepatocellular carcinoma(HCC)3 cm or smaller,high local tumor recurrence rates have been reported(up to 20%)despite initial complete ablation rates reaching 95%.This prompted the recommendation of no touch RFA(NT-RFA)for this indication in clinical practice since 2006(1).The rationale of NT-RFA is based on the assumption that the insertion of electrodes no longer inside but deliberately just outside the borders of the tumors could allow achieving more consistent tumoral ablation with safety margins,hence preventing further secondary local progression from unablated extranodular peripheral microscopic tumoral foci(2).

关键词： prompt ablation hence

ARIMA模型与GM(1,1)模型对丙型病毒性肝炎发病的预测效果比较研究

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预防医学情报杂志 2024年

作者：张明玉周钰博吴建军吕珍王引弟 Bilembi M.olivier 李三三甘肃中医药大学公共卫生学院

目的通过ARIMA模型与GM(1,1)模型拟合2013—2022年金昌市的丙型病毒性肝炎发病率数据,探索比较两模型在实际应用中的预测效果。方法从中国疾病预防控制信息系统子系统传染病监测收集2013—2022年甘肃省金昌市居民丙肝发病数据,运用SPS... 详细信息

目的通过ARIMA模型与GM(1,1)模型拟合2013—2022年金昌市的丙型病毒性肝炎发病率数据,探索比较两模型在实际应用中的预测效果。方法从中国疾病预防控制信息系统子系统传染病监测收集2013—2022年甘肃省金昌市居民丙肝发病数据,运用SPSS 25.0软件与Excel 2016软件建立ARIMA模型与GM(1,1)模型并进行预测,根据两个模型的均方误差(mean square error,MSE)、均方根误差(root mean square error,RMSE)、平均绝对误差(mean absolute error,MAE)、平均绝对百分比误差(mean absolute percentage error,MAPE)比较评价模型预测效果,检验水准α=0.05。结果拟合模型后显示,最优ARIMA模型为ARIMA(3,1,1)模型,使用该模型预测2023年丙肝发病率为12.59/10万;而使用GM(1,1)模型预测2023年丙肝发病率为14.78/10万。ARIMA(3,1,1)模型与GM(1,1)模型预测效果评价指标MSE、RMSE、MAE、MAPE分别为0.672、0.809、0.647、10.913%和16.355、4.044、3.656和14.911%。结论 ARIMA(3,1,1)模型拟合效果优于GM(1,1)模型,ARIMA模型对金昌市丙肝发病率的预测有较明显的优势,能更精准的处理该类时间序列数据。

关键词： ARIMA模型 GM(1,1)模型丙型病毒性肝炎预测

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扶正祛邪法对肿瘤相关巨噬细胞的影响

光明中医 2024年第11期39卷 2174-2177页

作者：周钰博张明玉吕珍王引弟李三三 Bilembi M.olivier 吴建军甘肃中医药大学甘肃兰州730030 甘肃中医药大学公共卫生学院甘肃兰州730030

肿瘤相关巨噬细胞具备的双向分化潜能,由于其异质性及在肿瘤生长代谢及肿瘤侵袭转移过程中发挥关键性作用,使得肿瘤相关巨噬细胞成为目前抗肿瘤治疗的重要靶点。“扶正祛邪”中医理论是治疗肿瘤的基本法则,关于“扶正祛邪”法则调节机... 详细信息

肿瘤相关巨噬细胞具备的双向分化潜能,由于其异质性及在肿瘤生长代谢及肿瘤侵袭转移过程中发挥关键性作用,使得肿瘤相关巨噬细胞成为目前抗肿瘤治疗的重要靶点。“扶正祛邪”中医理论是治疗肿瘤的基本法则,关于“扶正祛邪”法则调节机体肿瘤相关巨噬细胞研究成为人们关注的热点。此文从具有“扶正祛邪”功效的中医药抗肿瘤的基本理论出发,综述近年国内外相关文献。探讨“扶正祛邪”法则调节机体肿瘤微环境下肿瘤相关巨噬细胞的作用,为中医药抗肿瘤的临床治疗、基础研究及中药新药的研发提供一定的思路。

关键词：肿瘤肿瘤相关巨噬细胞中医药疗法扶正祛邪

Spatial symmetries in nonlocal multipolar metasurfaces

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Advanced Photonics 2023年第4期5卷 9-22页

作者： Karim Achouri Ville Tiukuvaara olivier J.F.Martin Institute of Electrical and Microengineering École Polytechnique Fédérale de LausanneNanophotonics and Metrology LaboratoryLausanneSwitzerland

We propose a framework that connects the spatial symmetries of a metasurface to its material parameter tensors and its scattering *** provides a simple and universal way to effortlessly determine the properties of a metasurface scattering response,such as chirality or asymmetric transmission,and which of its effective material parameters should be taken into account in the prospect of a homogenization *** contrast to existing techniques,this approach does not require any a priori knowledge of group theory or complicated numerical simulation schemes,hence making it fast,easy to use and *** working principle consists in recursively solving symmetry-invariance conditions that apply to dipolar and quadrupolar material parameters,which include nonlocal interactions,as well as the metasurface scattering *** overall process thus only requires listing the spatial symmetries of the *** the proposed framework,we demonstrate the existence of multipolar extrinsic chirality,which is a form of chiral response that is achieved in geometrically achiral structures sensitive to field gradients,even at normal incidence.

关键词： spatial symmetries metamaterials bianisotropy multipoles chirality

High-frequency structure design and RF stability analysis of a 4-vane radio frequency quadrupole with pi-mode stabilizer loops

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Nuclear Science and Techniques 2022年第3期33卷 113-125页

作者： Xiao-Wen Zhu Claude Marchand olivier Piquet Michel Desmons IRFU CEAUniversite´Paris-Saclay91191 Gif-sur-YvetteFrance

Compact accelerator-based neutron source facilities are garnering attention and play an important and expanding role in material and engineering sciences,as well as in neutron science education and *** are produced by bombarding a low-energy proton beam onto a beryllium or lithium *** such an acceleratorbased neutron source,a radio frequency quadrupole(RFQ)is usually utilized to accelerate a high-intensity proton beam to a few *** study mainly covers the highfrequency structure design optimizations of a 4-vane RFQ with pi-mode stabilizer loops(PISLs)and its RF stability analysis.A 176 MHz RFQ accelerator is designed to operate at a 10%duty factor and could accelerate an80 mA proton beam from 65 keV to 2.5 MeV within a length of 5.3 *** adoption of PISLs ensures high RF stability,eases the operation of the accelerator,and implies less stringent alignment and machining tolerances.

关键词： Accelerator-based neutron source 4-vane RFQ accelerator Pi-mode stabilizer loops Perturbative analysis Electromagnetic design Multipacting simulation

Experiment/simulation correlation-based methodology for metallic ballistic protection solutions

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Defence Technology（防务技术） 2023年第11期29卷 24-38页

作者： Yohan Cosquer Patrice Longère olivier Pantalé Claude Gailhac DGA-Techniques Aéronautiques 31130BalmaFrance Institut Clement Ader Universite de ToulouseISAE-SUPAEROIMT Mines AlbiUPSINSACNRS3RueCarolineAigle31400ToulouseFrance Laboratoire Genie de Production INP/ENITUniversitéde Toulouse47Avenued’AzereixF-65016TarbesFrance CNIM Systemes Industriels 83500 La Seyne-sur-MerFrance

A methodology is developed based on the coupling of a finite element code with an optimisation module for the design of land vehicle armouring composed of lightweight aluminium alloy and high strength steel *** an experiment/simulation correlation,a numerical model has been built and calibrated considering monolithic plates and then verified considering a bi-metal protection against tungsten carbide projectile mimicking the core of a 7.62×51 AP8 *** addition,a method is proposed to obtain the v_(res)-v_(i) curve for the full 7.62×51 AP8 bullet from the v_(res)-v_(i) curve obtained from the core only.

关键词： Impact Terminal ballistics Ballistic limit MARS380 Aluminium alloy 7.62×51 AP8

High-sensitivity integrated SiN rib-waveguide long period grating refractometer

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Photonics Research 2022年第2期10卷 564-573页

作者： Clement Deleau Han Cheng Seat olivier Bernal Frederic Surre LAAS-CNRS Université de ToulouseCNRSINPToulouseFrance James Watt School of Engineering University of GlasgowGlasgowUK

In this research, we demonstrate a high-sensitivity integrated silicon nitride long period grating(LPG) refractometer based on a rib waveguide with sinusoidally modulated width. While integrated LPG architectures typically achieve ultrahigh sensitivity only over a narrow optical bandwidth using a phase-matching turning-point optimization technique, our sensor exhibits a very high refractometric sensitivity that was designed to remain constant over a broad operational optical spectral bandwidth. The proposed design method relies on multi-modal dispersion tailoring that consists of homogenizing the spectral behaviors of both group and effective indices of the coupling modes. Experimental results are in agreement with numerical simulations, demonstrating not only a sensitivity reaching 11,500 nm/RIU but, more significantly, also that this sensitivity remains almost constant over a broad spectral range of at least 100 nm around 1550 nm. Additional advantages of the proposed sensor architecture encompass a low temperature sensitivity, down to -0.15 nm/K, and simplicity of the fabrication *** results demonstrate the feasibility of chip-scale photonic integration to achieve both high sensitivity and large dynamic range of the proposed refractometer.

关键词： waveguide simplicity turning