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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

A Mode-Switching Motion Control System for reactive Interaction and Surface Following Using Industrial Robots

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IEEE/CAA Journal of Automatica Sinica 2018年第3期5卷 670-682页

作者： Danial Nakhaeinia pierre Payeur Robert Laganière School of Electrical Engineering and Computer Science University of Ottawa

This work proposes a sensor-based control system for fully automated object detection and exploration(surface following) with a redundant industrial robot. The control system utilizes both offline and online trajectory planning for reactive interaction with objects of different shapes and color using RGBD vision and proximity/contact sensors feedback where no prior knowledge of the objects is available. The RGB-D sensor is used to collect raw 3D information of the environment. The data is then processed to segment an object of interest in the scene. In order to completely explore the object, a coverage path planning technique is proposed using a dynamic 3D occupancy grid method to generate a primary(offline) trajectory. However, RGB-D sensors are very sensitive to lighting and provide only limited accuracy on the depth measurements. Therefore, the coverage path planning is then further assisted by a real-time adaptive path planning using a fuzzy self-tuning proportional integral derivative(PID)controller. The latter allows the robot to dynamically update the 3D model by a specially designed instrumented compliant wrist and adapt to the surfaces it approaches or touches. A modeswitching scheme is also proposed to efficiently integrate and smoothly switch between the interaction modes under certain conditions. Experimental results using a CRS-F3 manipulator equipped with a custom-built compliant wrist demonstrate the feasibility and performance of the proposed method.

关键词： Adaptive control fuzzy-PID controller manipulator control motion planning surface following

THreE DIMENSIONAL DYNAMIC ELASTICPLASTIC ANALYSIS OF THE INTERACTION OF A SET OF PERCUSSION BITS WITH ROCK MASSES

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Acta Mechanica Solida Sinica 1995年第4期8卷 364-374页

作者： Song, SC Knasmillner, re INNER MANGOLIA reS INST MET POB 4BAOTOU 014034PEOPLES R CHINA VIENNA TECH UNIV INST MECHA-1040 VIENNAAUSTRIA

A three dimensional dynamic elastic-plastic finite element analysis of the interaction of percussion bits with rock masses is presented. The dynamic contact problem was investigated with the numerical method developed for high velocity impact calculations[1]. The numerical analysis was carried out for three simultaneously loaded percussion bits arranged on a straight line on the rock surface, the loading time was kept constant throughout this work. The numerical calculation for various strengths of the dynamic load tm the percussion bits shows that a critical minimum dynamic load exists for the generation of plastic deformations in the rock. For this critical value of the load the maximum normal stress of the longitudinal wave in the percussion bit exceeds the yield stress of the rock mass.

关键词： rock masses percussion bits numerical analysis

A new look on wetting models:continuum analysis

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Science China(Physics,Mechanics & Astronomy) 2012年第11期55卷 2158-2166页

作者： LIU JianLin XIA re ZHOU XiaoHua School of Pipeline and Civil Engineering China University of PetroleumQingdao 266555China School of Power and Mechanical Engineering Wuhan UniversityWuhan 430072China Department of Mathematics and Physics Fourth Military Medical UniversityXi’an 710032China

In this study,we considered the wetting phenomenon on a general substrate from a new viewpoint of continuum *** analyses first show how the Wenzel and the Cassie models deviate the practical results in some special substrates,and then elucidate the mechanism of the triple contact line(TCL) *** upon variational theory of the total free functional dealing with the movable boundary condition,we show that the macroscopic contact angle(MCA) expression is the corresponding transversality *** manifests that the MCA depends only on the chemical and geometric property at the TCL,and is not affected by the gravity of the droplet and the contact area beneath the *** continuum model also shows the exploration of the pinning effect on a sharp wedge or the interface between two different *** investigation will help designing super-hydrophobic materials for novel micro-fluidic devices.

关键词： continuum field energy functional transversality condition mechanism-based model triple line moving

A Shortest-Path Tree Approach for Routing in Space Networks

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China Communications 2020年第7期17卷 52-66页

作者： Olivier De Jonckère Juan A.Fraire Technische Universitat Dresden 01187Germany CONICET-Univerisidad Nacional de Córdoba 5000Argentina Saarland University Saarland Informatics CampusSaarbrückenGermany

A new space era is bringing deployments of thousands of networked assets in near-Earth and ***-Tolerant Networking(DTN)protocols and algorithms such as Contact Graph Routing(CGR)are state-of-the-art technologies certainly capable of achieving this ambitious ***,in this paper,we highlight and analyze the roots of current scalability limits of CGR,to then propose more efficient *** particular,we leverage a different graph modeling approach that enables optimizations such as priority queues and spanning-tree searches in the core route determination *** such abstract data types are difficult to adapt to CGR,we incorporate them into a novel Shortest-Path Tree Approach for Routing in Space Networks(SPSN),which is presented as a compute-efficient *** paper thoroughly describes the SPSN approach including route object modeling,capacity-oriented search,and potential route management *** evaluations analyzed in this paper present significant evidence that SPSN outperforms legacy CGR in more than an order of magnitude in contact plans comprising thousands of contacts.

关键词： bringing thoroughly enable

糖尿病小鼠来源的骨髓间充质干细胞培养上清液诱发胰岛素抵抗的研究

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中国临床药理学杂志 2024年第14期40卷 2033-2037页

作者：李包娟周克春阿布都拉·米热合买提祖丽胡马·热合曼叶雨萌张之新疆医科大学药学院新疆维吾尔自治区乌鲁木齐830000 新疆天然药物活性组分与释药技术重点实验室新疆维吾尔自治区乌鲁木齐830000

目的探究糖尿病小鼠来源的骨髓间充质干细胞及其旁分泌作用在诱发胰岛素抵抗(IR)中扮演的角色。方法建立小鼠糖尿病模型,提取并培养骨髓间充质干细胞(BMSC),收集培养上清液(M-BMSC-CS)。(1)细胞实验:将HepG2肝细胞分为正常低糖培养组[... 详细信息

目的探究糖尿病小鼠来源的骨髓间充质干细胞及其旁分泌作用在诱发胰岛素抵抗(IR)中扮演的角色。方法建立小鼠糖尿病模型,提取并培养骨髓间充质干细胞(BMSC),收集培养上清液(M-BMSC-CS)。(1)细胞实验:将HepG2肝细胞分为正常低糖培养组[用低糖DMEM(5.55 mmol·L^(-1))进行培养]、M-BMSC-CS实验组(M-BMSC-CS 75μL)、高糖高脂对照组(给予25 mmol·L^(-1)高糖DMEM+0.25 mmol·L^(-1)棕榈酸)。(2)动物实验:小鼠分为正常小鼠组(腹腔注射等体积0.9%NaCl)和M-BMSC-CS-m组(M-BMSC-CS通过腹腔注射给予正常小鼠,注射剂量0.2 mL/10 g)。用葡萄糖氧化酶法检测葡萄糖摄取量,用免疫荧光法检测Glut2蛋白荧光强度,用蛋白质印迹法检测胰岛素信号通路蛋白表达;检测口服葡萄糖耐量(OGTT)和胰岛素耐量(ITT)。结果正常低糖培养组、M-BMSC-CS实验组和高糖高脂对照组的葡萄糖摄取量分别为(2.96±0.05)、(1.64±0.28)和(1.42±0.32)mmol·L^(-1),葡萄糖转运蛋白2(Glut2)荧光表达分别为53.21±2.70、30.95±3.39和34.96±7.60,磷酸化胰岛素受体底物1-ser307(p-IRS-1ser307)表达蛋白相对水平分别为0.46±0.21、1.09±0.24和0.91±0.16,磷酸化蛋白激酶(p-AKT)蛋白相对表达水平分别为0.94±0.05、0.59±0.06和0.53±0.05,Glut2蛋白表达水平分别为1.08±0.14、0.58±0.14和0.62±0.09;M-BMSC-CS实验组的上述指标与正常低糖培养组比较,在统计学上差异均有统计学意义(均P<0.05)。正常小鼠组和M-BMSC-CS-m组空腹血糖分别为(5.23±0.57)和(9.30±1.14)mmol·L^(-1),p-AKT蛋白相对表达水平分别为1.27±0.21和0.51±0.19,Glut2蛋白相对表达水平分别为1.17±0.17和0.79±0.09;M-BMSC-CS-m组的上述各指标与正常小鼠组比较,在统计学上差异均有统计学意义(均P<0.05)。结论糖尿病小鼠来源的BMSC培养上清液在体外引起正常HepG2肝细胞胰岛素抵抗,在体内诱发正常小鼠胰岛素抵抗。

关键词：糖尿病小鼠骨髓间充质干细胞培养上清液胰岛素抵抗 HepG2肝细胞正常小鼠

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

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允许性高碳酸血症在临床中的应用进展

赣南医学院学报 2024年第4期44卷 404-408页

作者：王玲钟毅单热爱赣南医科大学第一临床医学院赣南医科大学第一附属医院麻醉手术中心赣州市麻醉学重点实验室赣南医科大学疼痛医学研究所江西赣州341000

允许性高碳酸血症在临床上已不仅局限于肺保护的应用,还具有多器官保护作用。本文就允许性高碳酸血症的多器官保护作用及机制进行综述,文献复习结果发现允许性高碳酸血症能够通过抗炎、抗氧化应激减少细胞凋亡、改善组织氧合,对肺、脑... 详细信息

允许性高碳酸血症在临床上已不仅局限于肺保护的应用,还具有多器官保护作用。本文就允许性高碳酸血症的多器官保护作用及机制进行综述,文献复习结果发现允许性高碳酸血症能够通过抗炎、抗氧化应激减少细胞凋亡、改善组织氧合,对肺、脑产生保护作用;此外还能通过改善线粒体结构、改善心肌缺血再灌注损伤等对脑、心脏具有保护作用,这些发现将为允许性高碳酸血症的后期研究及不同的临床应用提供参考。

关键词：允许性高碳酸血症多器官保护肺保护

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温通方联合局部病灶切除术治疗肉芽肿性小叶性乳腺炎阳虚痰凝证随机对照研究

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中国中西医结合杂志 2024年第6期44卷 665-669页

作者：郭洁荣热孜亚·萨吾尔孙霃平刘胜上海中医药大学附属龙华医院中西医结合乳腺科上海200032

目的观察温通方联合局部病灶切除术治疗肉芽肿性小叶性乳腺炎(GLM)阳虚痰凝证的临床疗效。方法本研究采用随机对照试验(RCT)方法,将80例阳虚痰凝证GLM患者随机分为治疗组和对照组,每组40例。治疗组采用温通方联合局部病灶切术治疗;对照... 详细信息

目的观察温通方联合局部病灶切除术治疗肉芽肿性小叶性乳腺炎(GLM)阳虚痰凝证的临床疗效。方法本研究采用随机对照试验(RCT)方法,将80例阳虚痰凝证GLM患者随机分为治疗组和对照组,每组40例。治疗组采用温通方联合局部病灶切术治疗;对照组采用单纯温通方中药治疗,观察2组患者临床疗效、愈后乳房外形评价及复发率情况。结果治疗组在治疗6个月时治愈率为40%(16/40),优于对照组[12.50%(5/40)],差异有统计学意义(χ^(2)=7.813,P0.05。治疗组平均总病程为(7.78±3.83)个月,优于对照组[(11.78±2.98)个月],差异有统计学意义(t=-5.215,P0.05)。治疗组术后6个月复发率为2.5%(1/40),与对照组[7.5%(3/40)]比较,差异无统计学意义(χ^(2)=0.263,P>0.05)。治疗组术后1年复发率为5%(2/40),优于对照组[20%(8/40)],差异有统计学意义(χ^(2)=4.114,P<0.05)。结论温通方联合局部病灶切除术治疗GLM阳虚痰凝证可明显缩短临床治疗病程,降低复发率。

关键词：温通方局部病灶切除术肉芽肿性小叶性乳腺炎阳虚痰凝证随机对照研究中西医结合