Resource Type

Journal Article 100

Year

2023 8

2022 9

2021 5

2020 7

2019 15

2018 4

2017 5

2016 1

2015 6

2014 1

2013 1

2012 1

2011 5

2010 1

2009 2

2008 3

2007 5

2006 1

2004 3

2003 2

open ︾

Keywords

Optical flow 3

Artificial intelligence 2

Imaging 2

2-dimensions optical orthogonal square codes (2D-OOSC) 1

α-Fe2O3 1

AF/PSTM 1

ANSYS 1

AOD 1

Adjoint operator 1

Aerosol optical depth 1

Aerosol pollution levels 1

Aerosol type 1

Aerospace 1

Angular momentum 1

Arrayed waveguide grating 1

Artificial compound eye 1

Askarel transformer 1

Biological treatment 1

Boundary detection 1

open ︾

Search scope:

排序： Display mode:

Microwave－Optical Frequency Standards at NIM：Realizing of Definition of Metre and Second

Li Tianchun

Strategic Study of CAE 2007, Volume 9, Issue 6,   Pages 27-31

Abstract: unit second using the NIM4 cesium fountain clock,  SI length unit meter using a femto-second (FS) optical frequency comb and calibration of wavelengths of stabilized lasers by this FS comb. The frequency uncertainty of the FS optical comb locked to a H-maser, which is steered by NIM4 The function,  significance of Cs fountain clock, stabilized lasers,  optical comb andFinally the progress of NIM5 fountain clock and the construction of a Sr atom optical clock started in

Keywords： metrology     frequency standard     stabilized laser     Cs fountain clock     FS optical comb    

HTML PDF Collect

Synthesis and characterization of well-defined comb-like branched polymers

LI Aixiang, LU Zaijun, LÜ Zijian

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 4,   Pages 407-411 doi: 10.1007/s11705-008-0064-6

Abstract: Well-defined comb-like branched polymers having one branch in each repeating unit have been successfullyThe resulting comb-like branched polymers were characterized by IR, H-NMR, gel permeation chromatography

Keywords： grafting efficiency     polyisoprene     quantitative grafting     effective     molecular    

HTML PDF Collect

Distribution of PCDD/Fs in a food waste anaerobic digestion process with biogas utilization

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 11, doi: 10.1007/s11783-023-1736-7

Abstract:

● The PCDD/F distribution patterns of the FW-AD process were investigated.

Keywords： Biological treatment     MSW classification     Mass balance     Solid digestate    

HTML PDF Collect

PCDD/Fs emission, risk characterization, and reduction in China’s secondary copper production industry

Haiqian LI, Yonglong LU, Li LI

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 4,   Pages 589-597 doi: 10.1007/s11783-013-0495-2

Abstract: Secondary copper production is one of the key polychlorinated dibenzo- -dioxins and dibenzofurans (PCDD/FsIn 2004, when the Stockholm Convention entered into force in China, PCDD/Fs emissions from secondaryIn this paper, PCDD/Fs emission dynamics from secondary copper industry were discussed and cumulativeFrom 2004 to 2009, industrial policies played an indirect role in PCDD/Fs reduction, but its effectscomparatively higher accumulated risk and were recommended as the priority regions for promoting PCDD/Fs

Keywords： polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs)     secondary copper production    

HTML PDF Collect

Investigation on early hydrates of cement pastes superplasticized by comb-type copolymer

Jiang Yaqing

Strategic Study of CAE 2011, Volume 13, Issue 9,   Pages 69-75

Abstract:

The aim of this paper is to find out regularity of comb-type water reducerseffect on early hydration of cement and to guide engineering applications of comb-type water reducersIt is found that comb-type water reducers can accelerate hydration rate of cement minerals.Therefore, early hydration of cement and engineering properties of concrete are dominated by the kind of comb-type

Keywords： comb-type water reducer     cement hydration     ettringite     microstructure    

HTML PDF Collect

Dual-Comb Ranging Review

Zebin Zhu, Guanhao Wu

Engineering 2018, Volume 4, Issue 6,   Pages 772-778 doi: 10.1016/j.eng.2018.10.002

Abstract: Dual-comb ranging is emerging as a powerful tool that exploits phase resolution and frequency accuracyUsing two coherent frequency combs, dual-comb ranging allows time and phase response to be measured rapidlyThis review introduces dual-comb ranging and summarizes the key techniques for realizing this rangingAs optical frequency comb technology progresses, dualcomb ranging shows promise for various professional

Keywords： Ranging     Dual-comb interferometer     Phase noise     Timing jitter     Tight-locking     Post-correction    

HTML PDF Collect

Development of surface reconstruction algorithms for optical interferometric measurement

Dongxu WU, Fengzhou FANG

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 1,   Pages 1-31 doi: 10.1007/s11465-020-0602-6

Abstract: Optical interferometry is a powerful tool for measuring and characterizing areal surface topography inA variety of instruments based on optical interferometry have been developed to meet the measurementThis paper provides an in-depth perspective of surface topography reconstruction for optical interferometricPrinciples, configurations, and applications of typical optical interferometers with different capabilitiesThis paper also presents the new challenges that optical interferometry techniques are facing in surface

Keywords： surface topography     measurement     optical interferometry     coherence envelope     phase-shifting algorithm    

HTML PDF Collect

Detailed analysis of PCBs and PCDD/Fs impurities in a dielectric oil sample (ASKAREL Nr 1740) from an

Jun HUANG, Yamei HUI, Toru MATSUMURA, Gang YU, Shubo DENG, Makoto YAMAUCHI, Changmin WU, Norimasa YAMAZAKI

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 2,   Pages 195-204 doi: 10.1007/s11783-013-0527-y

Abstract: Homolog and congener profiles of polychlorinated biphenyls (PCBs), polychlorinated dibenzo- - dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) in commercial PCBs formulations are useful information for the source appointment of PCBs contamination as well as the risk assessment caused by potential exposure. Dielectric oil (ASKAREL Nr 1740) in an imported transformer found in China was sampled and analyzed by isotope dilution technology using high resolution gas chromatography-high resolution mass spectrometry (HRGC/HRMS). The detailed homolog and congener profiles of PCBs obtained were compared with those of known Aroclor formulations. High similarity in the homolog profile between the oil sample and Aroclor 1260 was found, with the hexachlorinated and heptachlorinated biphenyls accounting for more than 80.2% of the total PCBs concentration. Severn indicator PCBs contribute about 30%, while 12 PCB congeners (i.e., #153, #143, #168, #180, #149, #165, #138, #170, #190, #187, #174, #181) account for more than 50% of the total PCB concentrations. Total concentration of PCDDs, PCDFs and dioxin-like PCBs (DL-PCBs) was found to be 740 ng TEQ/g, of which 620 ng TEQ/g came from DL-PCBs. The contribution of PCDDs to the total TEQ was neglectable. The concentration of PCDFs homologs follows the order of OCDF>HxCDFs>HpCDFs>PeCDFs>TeCDFs, which is in consistence with the previous study on Aroclor 1260. Three DL-PCBs congeners (i.e., #118, #156, #157) accounted for 77% of the total concentration of DL-PCBs, also they contribute 72% in the TEQ caused by DL-PCBs.

Keywords： profiles of polychlorinated biphenyls (PCBs)     polychlorinated dibenzo-p-dioxins (PCDDs)     polychlorinated dibenzofurans (PCDFs)     Askarel transformer     insulating fluid    

HTML PDF Collect

Precision glass molding: Toward an optimal fabrication of optical lenses

Liangchi ZHANG,Weidong LIU

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 1,   Pages 3-17 doi: 10.1007/s11465-017-0408-3

Abstract: and time consuming to use machining processes, such as grinding, polishing and lapping, to produce opticalPrecision glass molding (PGM) has thus been developed to realize an efficient manufacture of such opticalFor example, a PGM process must be carried out within the super-cooled region of optical glass abovemanufacturing chain consideration from mold material selection, property and deformation characterization of optical

Keywords： precision glass molding     optical lens     constitutive modeling     optimization     manufacturing chain     Industry    

HTML PDF Collect

study on low temperature thermal treatment of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs

YAN Jianhua, CHEN Tong, LU Shengyong, LI Xiaodong, GU Yueling, CEN Kefa

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 280-284 doi: 10.1007/s11708-007-0039-1

Abstract: The effects of temperature and time on polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs)The PCDD/Fs in the gas phase and solid phase were detected by high-resolution gas chromatography coupledThere were high levels of OCDD in the gas phase in several experimental conditions although the PCDD/FsThe optimum condition for PCDD/Fs decomposition in fly ash was a heating time of 60 min at 400 vH under

Keywords： congener     polychlorinated     temperature     chromatography     high-resolution    

HTML PDF Collect

The Latest Development of Optical Fiber, Optical Fiber Band and Optical Cable Technology Abroad

Liu Liangyan

Strategic Study of CAE 2001, Volume 3, Issue 9,   Pages 86-94

Abstract:

In this paper, new development about the study of dispersion-compensable low transmission loss opticalfiber, nonzero dispersion displacement optical fiber, and carbon-coated or silicon nitride-coated opticalThen the manufacture technology of band optical fiber including its structure, coatings, properties andMulti-core optical fiber band cable manufacture technology such as twisted loose-tube, center loose-tube, frame, dry core band optical cable was also discussed.

Keywords： optical communication     low transmission loss optical fiber     optical fiber band     band optical fiber cable    

HTML PDF Collect

Optical Problems in Imaging Optical Engineering

Pan Junhua

Strategic Study of CAE 2000, Volume 2, Issue 3,   Pages 32-35

Abstract: According to the trend of technical progress, it is unavoidable to use reflective optical systems, andFor optical system design, the main problem is how to construct an effective reflecting system whichmay be optimized by the optical CAD.

Keywords： imaging optics     aspheric mirror     optical design     optical fabrication and testing    

HTML PDF Collect

Effects of critical geometric parameters on the optical performance of a conical cavity receiver

Hu XIAO, Yanping ZHANG, Cong YOU, Chongzhe ZOU, Quentin FALCOZ

Frontiers in Energy 2019, Volume 13, Issue 4,   Pages 673-683 doi: 10.1007/s11708-019-0630-2

Abstract: The optical performance of a receiver has a great influence on the efficiency and stability of a solarMost of the literature focuses on the optical performance of receivers with different geometric shapesThese factors affect the optical efficiency, the maximum heat flux density, and the light distributionThe increase in the number of loops contributed to an increase in the optical efficiency and a uniformThe conical cavity receiver had an optimal optical performance when the focal point of the collector

Keywords： parabolic collector     conical cavity receiver     critical geometric parameters     optical performance    

HTML PDF Collect

Recent advancements in optical microstructure fabrication through glass molding process

Tianfeng ZHOU,Xiaohua LIU,Zhiqiang LIANG,Yang LIU,Jiaqing XIE,Xibin WANG

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 1,   Pages 46-65 doi: 10.1007/s11465-017-0425-2

Abstract:

Optical microstructures are increasingly applied in several fields, such as optical systems, precisionThis paper presents an overview of optical microstructure fabrication through glass molding and highlightsthe applications of optical microstructures in mold fabrication and glass molding.

Keywords： optical microstructure     microgroove     microlens     glass molding process     single-point diamond cutting    

HTML PDF Collect

Review of optical tweezers in vacuum Special Feature on Precision Measurement and Inst

Nan LI, Xun-min ZHU, Wen-qiang LI, Zhen-hai FU, Meng-zhu HU, Hui-zhu HU

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 5,   Pages 655-673 doi: 10.1631/FITEE.1900095

Abstract:

As a versatile tool for trapping and manipulating neutral particles, optical tweezers have been studiedFurthermore, unlike levitating particles in liquid or air, optical tweezers operating in vacuum are isolatedIn this paper we review the history and the basic concepts of optical tweezers in vacuum and provide

Keywords： Optical tweezers     Optical trapping in vacuum     Optical cooling    

HTML PDF Collect

Title Author Date Type Operation

Microwave－Optical Frequency Standards at NIM：Realizing of Definition of Metre and Second

Li Tianchun

Journal Article

Synthesis and characterization of well-defined comb-like branched polymers

LI Aixiang, LU Zaijun, LÜ Zijian

Journal Article

Distribution of PCDD/Fs in a food waste anaerobic digestion process with biogas utilization

Journal Article

PCDD/Fs emission, risk characterization, and reduction in China’s secondary copper production industry

Haiqian LI, Yonglong LU, Li LI

Journal Article

Investigation on early hydrates of cement pastes superplasticized by comb-type copolymer

Jiang Yaqing

Journal Article

Dual-Comb Ranging

Zebin Zhu, Guanhao Wu

Journal Article

Development of surface reconstruction algorithms for optical interferometric measurement

Dongxu WU, Fengzhou FANG

Journal Article

Detailed analysis of PCBs and PCDD/Fs impurities in a dielectric oil sample (ASKAREL Nr 1740) from an

Jun HUANG, Yamei HUI, Toru MATSUMURA, Gang YU, Shubo DENG, Makoto YAMAUCHI, Changmin WU, Norimasa YAMAZAKI

Journal Article

Precision glass molding: Toward an optimal fabrication of optical lenses

Liangchi ZHANG,Weidong LIU

Journal Article

study on low temperature thermal treatment of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs

YAN Jianhua, CHEN Tong, LU Shengyong, LI Xiaodong, GU Yueling, CEN Kefa

Journal Article

The Latest Development of Optical Fiber, Optical Fiber Band and Optical Cable Technology Abroad

Liu Liangyan

Journal Article

Optical Problems in Imaging Optical Engineering

Pan Junhua

Journal Article

Effects of critical geometric parameters on the optical performance of a conical cavity receiver

Hu XIAO, Yanping ZHANG, Cong YOU, Chongzhe ZOU, Quentin FALCOZ

Journal Article

Recent advancements in optical microstructure fabrication through glass molding process

Tianfeng ZHOU,Xiaohua LIU,Zhiqiang LIANG,Yang LIU,Jiaqing XIE,Xibin WANG

Journal Article

Review of optical tweezers in vacuum

Nan LI, Xun-min ZHU, Wen-qiang LI, Zhen-hai FU, Meng-zhu HU, Hui-zhu HU

Journal Article