检索结果-南通市图书馆

Enabling Technologies for Autonomous robotic Systems in Manufacturing

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Transactions of Nanjing University of Aeronautics and Astronautics 2024年第4期41卷 403-431页

作者： ErdŐS gábor ABAI Kristóf BErEgI rich.rd CSEMPESZ János CSErTEg Tamás gOdÓgábor hAJÓS Mátyás hÁY Borbála hOrVÁTh dániel hOrVÁTh gergely JUNIKIÁdám KEMÉNY Zsolt KOVÁCS András NACSA János PANITI Imre PEdONE gianfranco TAKÁCS Emma TIPArY Bence ZAhOrÁN László VÁNCZA József Institute for Computer Science and Control Hungarian Research Network(HUN-REN SZTAKI)BudapestHungary department of Manufacturing Science and Technology Budapest University of Technology and Economics(BME)BudapestHungary EPIC InnoLabs Nonprofit Ltd. BudapestHungary Eötvös Loránd University(ELTE) BudapestHungary

research of autonomous manufacturing systems is motivated both by the new technical possibilities of cyber-physical systems and by the practical needs of the *** operation in semi-structured industrial environments can now be supported by advanced sensor technologies,digital twins,artificial intelligence and novel communication *** enable real-time monitoring of production processes,situation recognition and prediction,automated and adaptive(re)planning,teamwork and performance improvement by *** paper summarizes the main requirements towards autonomous industrial robotics and suggests a generic workflow for realizing such *** case studies will be presented from recent practice at hUN-rEN SZTAKI in a broad range of domains such as assembly,welding,grinding,picking and placing,and *** various solutions have in common that they use a generic digital twin concept as their *** making general recommendations for realizing autonomous robotic solutions in the industry,open issues for future research will be discussed.

关键词： industrial robotics autonomy digital twin enabling technology

Aerosol jet printing of surface acoustic wave microfluidic devices

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Microsystems & Nanoengineering 2024年第1期10卷 231-242页

作者： Joseph rich Brian Cole Teng Li Brandon Lu hanyu Fu Brittany N.Smith Jianping Xia Shujie Yang ruoyu Zhong James L.doherty Kanji Kaneko hiroaki Suzuki Zhenhua Tian Aaron d.Franklin Tony Jun huang department of Biomedical Engineering Duke UniversityDurhamNC 27708USA department of Electrical and Computer Engineering Duke UniversityDurhamNC 27708USA department of Mechanical Engineering Virginia Polytechnic Institute and State UniversityBlacksburgVA 24061USA Thomas Lord department of Mechanical Engineering and Materials Science Duke UniversityDurhamNC 27708USA deptartment of Precision Mechanics Faculty of Science and EngineeringChuo UniversityTokyo 112-8551Japan department of Chemistry Duke UniversityDurhamNC 27708USA

The addition of surface acoustic wave(SAW)technologies to microfluidics has greatly advanced lab-on-a-chip applications due to their unique and powerful attributes,including high-precision manipulation,versatility,integrability,biocompatibility,contactless nature,and rapid ***,the development of SAW microfluidic devices is limited by complex and time-consuming micro/nanofabrication techniques and access to cleanroom facilities for multistep photolithography and vacuum-based *** simplify the fabrication of SAW microfluidic devices with customizable dimensions and functions,we utilized the additive manufacturing technique of aerosol jet *** successfully fabricated customized SAW microfluidic devices of varying materials,including silver nanowires,graphene,and poly(3,4-ethylenedioxythiophene)polystyrene sulfonate(PEdOT:PSS).To characterize and compare the acoustic actuation performance of these aerosol jet printed SAW microfluidic devices with their cleanroom-fabricated counterparts,the wave displacements and resonant frequencies of the different fabricated devices were directly measured through scanning laser doppler ***,to exhibit the capability of the aerosol jet printed devices for lab-on-a-chip applications,we successfully conducted acoustic streaming and particle concentration ***,we demonstrated a novel solution-based,direct-write,single-step,cleanroom-free additive manufacturing technique to rapidly develop SAW microfluidic devices that shows viability for applications in the fields of biology,chemistry,engineering,and medicine.

关键词： printing wave fluid

rational design of AggaS/ZnS/ZnS quantum dots with a near-unity photoluminescence quantum yield via double shelling scheme

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2024年第2期169卷 235-242页

作者： h.X.Lu h.Liu Z.Z.Fu Y.Y.Chen h.Q.dai Z.hu W.L.Zhang r.Q.guo Institute for Electric Light Sources School of Information Science and TechnologyFudan UniversityShanghai 200433China Institute of Future Lighting Academy for Engineering and TechnologyFudan UniversityShanghai 200433China Yiwu research Institute of Fudan University YiwuZhejiang 322000China Zhongshan-Fudan Joint Innovation Center Zhongshan 528437China

In this study,a two-step method was used to synthesize highly luminescent AggaS/ZnS/ZnS quantum dots(Qds).In the first step,an inner ZnS shell was formed via a one-pot method,which resulted in a smaller lattice mismatch between the AggaS core and the outer ZnS shell,thereby facilitating the formation of a thick outer *** the two-step shelling process,the synthesized AggaS/ZnS/ZnS Qds showed an excellent photoluminescence quantum yield(PLQY)of 96.4%with a peak wavelength of 508 nm,repre-senting the highest PLQY reported thus far for AggaS ***,the effect of halogen ions in Zn precursors on the shelling process was *** was proposed that the capacity of halogen ions to coordinate with the Qds influenced the balance between Zn cation diffusion and ZnS shelling ***,the ZnS shelling reaction was dominant when ZnCl_(2)was employed,while Zn cation diffusion was the dominant process under the I^(−)-rich *** work provides insights into the interfacial restructuring during the ZnS shelling and offers a clear map for the tailored synthesis of core/shell Qds.

关键词： AggaS Quantum dots Photoluminescence Core/shell Alloyed core/shell interface

自主机器人使能技术在制造业中的应用（英文）

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Transactions of Nanjing University of Aeronautics and Astronautics 2024年第4期 403-431页

作者： Erd?S gábor ABAI Kristóf BErEgI rich.rd CSEMPESZ János CSErTEg Tamás gOdó gábor hAJóS Mátyás háY Borbála hOrVáTh dániel hOrVáTh gergely JUNIKI ádám KEMéNY Zsolt KOVáCS András NACSA János PANITI Imre PEdONE gianfranco TAKáCS Emma TIPArY Bence ZAhOráN László VáNCZA József 匈牙利研究网络计算机科学与控制研究所布达佩斯经济与技术大学制造科学与技术系 EPIC非盈利创新实验室厄特沃什·罗兰大学

自主制造系统的研究既受益于信息物理融合系统这一新技术的推动，也响应工业实际需求的号召。目前，先进的传感器技术、数字孪生、人工智能和新型通信技术可以支持半结构化工业环境中的自主操作，可实现对生产过程的实时监控、情况识别... 详细信息

自主制造系统的研究既受益于信息物理融合系统这一新技术的推动，也响应工业实际需求的号召。目前，先进的传感器技术、数字孪生、人工智能和新型通信技术可以支持半结构化工业环境中的自主操作，可实现对生产过程的实时监控、情况识别和预测、自动和自适应（重新）规划、团队合作，以及通过学习提高性能。本文总结了实现自主工业机器人技术的主要需求，提出了实现此类系统的通用工作流程，并介绍了hUN-rEN SZTAKI最近在装配、焊接、打磨、拾取和放置以及机械加工等多个应用领域的广泛实践。这些解决方案的共同点是以通用的数字孪生概念为核心。最后，本文提出实现工业自主机器人解决方案的一般建议，并讨论了未来要研究的一些开放性问题。

关键词：工业机器人自动化数字孪生使能技术

Ab initio valence-space in-medium similarity renormalization group calculations for neutron-rich P,Cl,and K isotopes

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics C 2024年第7期48卷 181-190页

作者：谢萌冉沈留媛李健国李红蕙袁琪左维 Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China

Neutron-rich P,Cl,and K isotopes,particularly those with neutron numbers of approximately N=28,have attracted extensive experimental and theoretical *** utilize the ab initio valence-space in-medium similarity renormalization group approach,based on chiral nucleon-nucleon and three-nucleon forces,to investigate the exotic properties of these *** calculations of the low-lying spectra are performed.A key finding is the level inversion between 3/2_(1)^(+)and 1/2_(1)^(+)states in odd-A isotopes,attributed to the inversion ofπ0xod_(3/2) andπls_(1/2) single-particle *** ab initio calculations,which incorporate the three-nucleon forces,correlate closely with existing experimental *** calculations of effective proton single-particle energies provide deeper insights into the shell evolution for Z=14 and 16 *** results indicate that the three-body force plays important roles in the shell evolution for Z=14 and 16 sub-shells with neutron numbers ranging from 20 to ***,systematic ab initio calculations are conducted for the low-lying spectra of odd-odd *** results correspond with experimental data and provide new insights for future research into these isotopes up to and beyond the drip line.

关键词： ab initio calculations shell evolution low-lying spectra

Creep-induced redistribution of alloying elements in CZ1 zirconium alloys

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2024年第6期173卷 31-44页

作者： W.T.Lin Q.Y.Lv d.Jiao L.B.Zhang J.Tan g.Sha J.hu China Nuclear Power Technology research Institute Shenzhen 518026China School of Material Science and Engineering Nanjing University of Science and TechnologyNanjing 210094China

Introducing minor alloying elements is an effective strategy to improve the corrosion and mechanical properties of zirconium alloys for nuclear *** in-reactor service,external environment and stress can affect the distribution of alloying elements,substantially changing the degradation process of zirconium *** date,there is a lack of in-depth understanding of the interaction between creep and microchemistry ***,we conducted systematic transmission electron microscopy(TEM)and atom probe tomography(APT)investigations to address creep-induced redistribution of alloying elements in CZ1(Zr-Sn-Nb-Fe-Cr-Cu)zirconium alloy with different initial ***,Fe,Sn,and Cu are found to co-segregate at grain *** higher the intermediate annealing temperature,the larger the gibbsian interfacial excesses of solute elements *** further demonstrate that creep can reduce the excess value of Fe at grain boundaries due to the coarsening of Zr-Fe-Cr second phase particles via grain boundary and dislocation pipe *** the same time,the excess value of Sn is increased by diffusing from the matrix to grain ***,Cu as a minor element in the concentration range of 0.05-0.3 wt.%is found to segregate at dislocations to form the Cottrell atmosphere and develop Cu-rich nanoclusters for suppressing dislocation *** new understanding of the segregation and clustering of minor alloying elements provides guidance for developing zirconium alloys with enhanced creep resistance.

关键词： Zirconium alloy Thermal creep grain boundary segregation dislocation segregation Cu-rich nanoclusters

high-yield and rapid isolation of extracellular vesicles by flocculation via orbital acoustic trapping:FLOAT

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Microsystems & Nanoengineering 2024年第1期10卷 313-323页

作者： Joseph rufo Peiran Zhang Zeyu Wang Yuyang gu Kaichun Yang Joseph rich Chuyi Chen ruoyu Zhong Ke Jin Ye he Jianping Xia Ke Li Jiarong Wu Yingshi Ouyang Yoel Sadovsky Luke P.Lee Tony Jun huang department of Mechanical Engineering and Materials Science Duke UniversityDurhamNCUSA department of Biomedical Engineering Duke UniversityDurhamNCUSA department of Obstetrics Gynecologyand Reproductive SciencesMagee-Womens Research InstituteUniversity of PittsburghPittsburghPAUSA department of Microbiology and Molecular genetics School of MedicineUniversity of PittsburghPittsburghPAUSA renal division and division of Engineering in Medicine Department of MedicineBrigham and Women’s HospitalHarvard Medical SchoolBostonMAUSA department of Bioengineering Department of Electrical Engineering and Computer ScienceUniversity of CaliforniaBerkeleyBerkeleyCAUSA department of Biophysics Institute of Quantum BiophysicsSungkyunkwan UniversitySuwonKorea

Extracellular vesicles(EVs)have been identified as promising biomarkers for the noninvasive diagnosis of various ***,challenges in separating EVs from soluble proteins have resulted in variable EV recovery rates and low ***,we report a high-yield(>90%)and rapid(hod called FLocculation via Orbital Acoustic Trapping(FLOAT).The FLOAT approach utilizes an acoustofluidic droplet centrifuge to rotate and controllably heat liquid *** adding a thermoresponsive polymer flocculant,nanoparticles as small as 20 nm can be rapidly and selectively concentrated at the center of the *** demonstrate the ability of FLOAT to separate urinary EVs from the highly abundant Tamm-horsfall protein,addressing a significant obstacle in the development of EV-based liquid *** to its high-yield nature,FLOAT reduces biofluid starting volume requirements by a factor of 100(from 20 mL to 200µL),demonstrating its promising potential in point-of-care diagnostics.

关键词： trapping utilize separating

Associations of gestational Exposure to Air Pollution and Polycyclic Aromatic hydrocarbons with Placental Inflammation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Environment & health 2024年第9期2卷 672-680页

作者： Emily A.Craig Yan Lin Yihui ge Xiangtian Wang Susan K.Murphy donald K.harrington rich.rd K.Miller Sally W.Thurston Philip K.hopke Emily S.Barrett Thomas g.O’Connor david Q.rich Junfeng Zhang Nicholas School of the Environment&duke global health Institute Duke UniversityDurhamNorth Carolina 27708United States department of Psychiatry University of Rochester School of Medicine and DentistryRochesterNew York 14642United States department of Obstetrics and gynecology University of Rochester School of Medicine and DentistryRochesterNew York 14642United States department of Environmental Medicine and department of Pediatrics University of Rochester School of Medicine and DentistryRochesterNew York 14642United States department of Psychology University of RochesterRochesterNew York 14642United States department of Biostatistics and Computational Biology and department of Environmental Medicine University of Rochester School of Medicine and DentistryRochesterNew York 14642United States department of Public health Sciences University of Rochester School of Medicine and DentistryRochesterNew York 14642United States department of Biostatistics and Epidemiology Rutgers School of Public HealthPiscatawayNew Jersey 08854United States department of Psychiatry and department of Neuroscience University of Rochester School of Medicine and DentistryRochesterNew York 14642United States department of Public health Sciences Department of Medicineand Department of Environmental MedicineUniversity of Rochester School of Medicine and DentistryRochesterNew York 14642United States

restricted fetal growth(rFg)is a leading contributor to perinatal mortality and has been associated with gestational exposure to air pollution,such as fine particulate matter(PM_(2.5)),nitrogen dioxide(NO2),and polycyclic aromatic hydrocarbons(PAhs).This study examines the association between trimester-specific and weekly means of air pollution throughout gestation and placental inflammatory markers at *** a prospective cohort study of 263 pregnant women in rochester,NY,we measured interleukin-6(IL-6)and tumor necrosis factor-alpha(TNF-α)in placental tissue and estimated gestational exposure to PM_(2.5)and NO_(2)using a high-resolution spatial-temporal *** to PAhs was estimated using urinary 1-hydroxypyrene(1-OhP)concentrations collected once per *** distributed lag models with a penalized spline function,each interquartile range(2.6μg/m^(3))increase in PM_(2.5)concentration during gestational weeks 6−11 was associated with decreased placental IL-6 levels(−22.2%,95%CI:−39.0%,−0.64%).Using multiple linear regression models,each interquartile range increase of 1-OhP was associated with an increase in TNF-αin the first trimester(58.5%,95%CI:20.7%,74.2%),third trimester(22.9%,95%CI:0.04%,49.5%),and entire pregnancy(29.6%,95%CI:3.9%,60.6%).Our results suggest gestational exposure to air pollution may alter the inflammatory environment of the placenta at delivery.

关键词： pregnancy air pollution PAhs placenta tumor necrosis factor interleukin

Interpreting siliciclastic sedimentation in the upper Paleozoic Mulargia-Escalaplano Basin(Sardinia, Italy):influence of tectonics on provenance

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Palaeogeography 2024年第1期13卷 18-34页

作者： Luca g.Costamagna Sara Criniti dipartimento di Scienze Chimiche e geologiche Citadella UniversitariaBlocco A09042 Monserrato CAItaly dipartimento di Ingegneria dell'Ambiente Universita della Calabria87036 Arcavacata di Rende CSItaly

Late to post-Variscan molassic basins of Late Pennsylvanian-Permian age are exposed in Sardinia(Italy). here, the compositional and stratigraphic evolution of the Mulargia-Escalaplano sedimentary basin(central Sardinia) has been investigated to highlight how the tectono-magmatic processes have influenced the sedimentation. ruditic and arenitic samples were collected along well-characterized stratigraphic sections to provide a new insight into the impact of the tectono-magmatic processes on siliciclastic sedimentation. As a result, the conglomerates are mainly clast-supported, petromictic, and thus immature, with no defined maturity trend upwards. Nevertheless, pebble composition changes in times from Variscan basement pebble-rich to volcanic rock-rich, as a consequence of the basin widening and the dismantling and reworking of the coeval volcanic activity. The sandstone composition clearly changes from quartzolithic to feldspatholithic upwards, as a response to the same change of feeding and reworking of the volcanic rocks. Occasionally, interbedded quartzolithic arenites suggest exceptional floods carrying debris from the far borders of the basin. Also, the immature sandstone composition has been interpreted as being controlled by a continuous supply of fresh debris and to a rapid burial rate. In addition, the disappearance of metaradiolarite(lydite AA) Paleozoic grains in the sandstone mineral suite could represent a distinctive marker of a progressive unroofing of the Variscan chain and a clastic supply from deeper tectonic units.

关键词： Petrography Stratigraphy Provenance Molassic basins Sardinia