Resource Type

Journal Article 25

Year

2023 3

2022 1

2021 1

2020 1

2019 2

2018 1

2017 1

2016 3

2015 3

2013 1

2009 1

2008 2

2007 3

2006 2

open ︾

Keywords

N-methylaniline 1

AI-Fuzzy VCN (IFN) 1

Analytical Hierarchy 1

CS-based image fusion 1

Cayley’s problem 1

Clock and data recovery 1

Clock distribution 1

Clock-gating scheme 1

Compressed sensing (CS) 1

Compressive sensing (CS) 1

Cs fountain clock 1

Cs2AgBiBr6 nanocrystals 1

Cs2AgBiBr6/TiO2 heterojunction 1

DNA-PK(cs)-binding protein 1

Dianchi 1

Digital loop filter 1

Dual-edge 1

Dynamic pose dataset 1

FAU(Y) zeolite 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: The paper presents the realization,  at NIM,  of SI time unit second using the NIM4 cesium fountainclock,  SI length unit meter using a femto-second (FS) optical frequency comb and calibration ofThe uncertainty of NIM4 fountain clock was evaluated as 5 × 10 - 15. 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

Asymmetric transfer hydrogenation of prochiral ketone catalyzed over Fe-CS/SBA-15 catalyst

XUE Ping, WU Tao

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 3,   Pages 251-255 doi: 10.1007/s11705-007-0045-1

Abstract: A heterogeneous chiral catalyst Fe(III)-CS (chitosan) complex/mesoporous molecular sieve SBA-15 (Santaprochiral acetophenone and 4-methyl-2-pentanone to corresponding chiral alcohols were carried out on Fe-CSFe-CS/SBA-15 with 2.2% mass fraction Fe exhibits considerable enantioselectivity and catalytic activity

Keywords： asymmetric transfer     enantioselectivity     Fe-CS/SBA-15     aliphatic     aromatic    

HTML PDF Collect

Gradient-based compressive image fusion

Yang CHEN,Zheng QIN

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 3,   Pages 227-237 doi: 10.1631/FITEE.1400217

Abstract: We present a novel image fusion scheme based on gradient and scrambled block Hadamard ensemble (SBHE) sampling for compressive sensing imaging. First, source images are compressed by compressive sensing, to facilitate the transmission of the sensor. In the fusion phase, the image gradient is calculated to reflect the abundance of its contour information. By compositing the gradient of each image, gradient-based weights are obtained, with which compressive sensing coefficients are achieved. Finally, inverse transformation is applied to the coefficients derived from fusion, and the fused image is obtained. Information entropy (IE), Xydeas’s and Piella’s metrics are applied as non-reference objective metrics to evaluate the fusion quality in line with different fusion schemes. In addition, different image fusion application scenarios are applied to explore the scenario adaptability of the proposed scheme. Simulation results demonstrate that the gradient-based scheme has the best performance, in terms of both subjective judgment and objective metrics. Furthermore, the gradient-based fusion scheme proposed in this paper can be applied in different fusion scenarios.

Keywords： Compressive sensing (CS)     Image fusion     Gradient-based image fusion     CS-based image fusion    

HTML PDF Collect

Influence of Tensile Overload on Fatigue Life of LC4CS Al-alloy After Corrosion

Jiang Hui,Yang Xiaohua

Strategic Study of CAE 2006, Volume 8, Issue 2,   Pages 44-46

Abstract:

Having undergone accelerative calendar corrosion, a plate with a central hole of LC4CS alloy was subjected

Keywords： LC4CS Al-alloy     corrosion before loads     overload     fatigue life    

HTML PDF Collect

Sediment environmental capacity of 137Cs in Daya Bay

ZHANG Junli, CHEN Jiajun, XU Jialin, LI Yuanxin, HUANG Naiming

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 2,   Pages 202-206 doi: 10.1007/s11783-007-0035-z

Abstract: mass conservation theory in a system, the concept and model on sediment environmental capacity for CsThe static capacity for Cs in the upper sediment near the shore at a shallow area was calculated, andThe results showed that the estimated environmental capacity for Cs in sediments was approximately equalto the current input of Cs into the sediments.Controlling the input of Cs in the sediments within the environmental capacity guarantees the sustainability

Keywords： concept     Sediment environmental     conservation theory     significant degradation     ecosystem    

HTML PDF Collect

Gushing metal chain

Alexander BELYAEV,Alexander SUKHANOV,Alexander TSVETKOV

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 1,   Pages 95-100 doi: 10.1007/s11465-016-0377-y

Abstract:

This article addresses the problem in which a chain falls from a glass from some height. This phenomenon demonstrates a paradoxical rise of the chain over the glass. To explain this effect, an initial hypothesis and an appropriate theory are proposed for calculating the steady fall parameters of the chain. For this purpose, the modified Сayley ’s problem of falling chain given its rise due to the centrifugal force of upward inertia is solved. Results show that the lift caused by an increase in linear density at the part of chain where it is being bent (the upper part) is due to the convergence of the chain balls to one another. The experiments confirm the obtained estimates of the lifting chain.

Keywords： chain     fountain     Meshchersky equation     Cayley’s problem    

HTML PDF Collect

All-inorganic TiO/CsAgBiBr composite as highly efficient photocatalyst under visible light irradiation

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 1925-1936 doi: 10.1007/s11705-023-2344-6

Abstract: A leading star in photocatalysis has been revealed as lead-free Cs2AgBiBr6 doubleIn this work, this photocatalytic process was facilitated by a unique TiO2/Cs2AgBiBrTiO2/Cs2AgBiBr6 composite was investigated for its structure and photocatalyticproposes the band gap matching, carrier separation, and photocatalytic mechanism of TiO2/Cs

Keywords： Cs2AgBiBr6 nanocrystals     visible-light photocatalyst     Cs2AgBiBr    

HTML PDF Collect

evaluation of heavy metal contamination of sediment in Lake Dianchi by using modified AHP method and Cs

ZHANG Yan, GAO Xiang, ZHONG Zhenyu, PENG Buzhuo, DENG Xihai

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 3,   Pages 370-379 doi: 10.1007/s11783-008-0054-4

Abstract: Through the use of general sampling and measurement by Cs dating, problems regarding the absence of

Keywords： Dianchi     Analytical Hierarchy     monitoring     modified Analytical     importance    

HTML PDF Collect

Consistency of MGEX Orbit and Clock Products Article

Peter Steigenberger, Oliver Montenbruck

Engineering 2020, Volume 6, Issue 8,   Pages 898-903 doi: 10.1016/j.eng.2019.12.005

Abstract: analysis centers of the Multi-GNSS Pilot Project of the International GNSS Service provide orbit and clockThe clock consistency is about 2 cm for GPS, 5 cm for GLONASS and Galileo, and 10 cm for BeiDou-2.

Keywords： system     International GNSS Service     Multi-GNSS Pilot Project     Precise orbit determination     Satellite clock    

HTML PDF Collect

Catalytic hydrogenation of insoluble organic matter of CS/Acetone from coal over mesoporous HZSM-5 supported

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 10,   Pages 1505-1513 doi: 10.1007/s11705-022-2164-0

Abstract: Four supported catalysts, nickel and ruthenium on a HZSM-5 support, were prepared by equal volume impregnation and in-situ decomposition of carbonyl nickel. The properties of catalysts were investigated by catalytic hydro-conversion of 2,2′-dinaphthyl ether as the model compound and extraction residue of Naomaohu lignite as the sample under an initial H2 pressure of 5 MPa and temperature at 150 °C. According to the catalytic hydro-conversion results of the model compound, Ni−Ru/HZSM-5 exhibited the best catalytic performance. It not only activated H2 into H···H, but also further heterolytically split H···H into immobile H‒ attached on the acidic centers of Ni−Ru/HZSM-5 and relatively mobile H+. Catalytic hydro-conversion of the extraction residue from Naomaohu lignite was further examined over the optimized catalyst, Ni−Ru/HZSM-5. Detailed molecular compositions of products from the extraction residue with and without hydrogenation were characterized by Fourier transform infrared spectroscopy and gas chromatography/mass spectrometry. The analytical results showed that the oxygen-containing functional groups in products of hydrogenated extraction residue were obviously reduced after the catalytic treatment. The relative content of oxygenates in the product with catalytic treatment was 18.57% lower than that in the product without catalytic treatment.

Keywords： HZSM-5     Ni-based catalyst     catalytic hydrogenation     coal     model compound    

HTML PDF Collect

Wide-range tracking technique for process-variation-robust clock and data recovery applications Article

Jun-sheng LV, You LI, Yu-mei ZHOU, Jian-zhong ZHAO, Hai-hua SHEN, Feng ZHANG

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 5,   Pages 729-737 doi: 10.1631/FITEE.1500410

Abstract: A wide-range tracking technique for clock and data recovery (CDR) circuit is presented.

Keywords： Clock and data recovery     Digital loop filter     Phase interpolator    

HTML PDF Collect

analysis of corrugated panels using homogenization models and a cell-based smoothed mindlin plate element (CS-MIN3

Nhan NGUYEN-MINH, Nha TRAN-VAN, Thang BUI-XUAN, Trung NGUYEN-THOI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 251-272 doi: 10.1007/s11709-017-0456-0

Abstract: development of smoothed finite element methods, the cell-based smoothed three-node Mindlin plate element (CS-MIN3Thus, this paper further extends the CS-MIN3 by integrating itself with homogenization models to give

Keywords： analysis     smoothed finite element method (S-FEM)     cell-based smoothed three-node Mindlin plate element (CS-MIN3    

HTML PDF Collect

Power-efficient dual-edge implicit pulse-triggered flip-flop with an embedded clock-gating scheme Article

Liang GENG,Ji-zhong SHEN,Cong-yuan XU

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 9,   Pages 962-972 doi: 10.1631/FITEE.1500293

Abstract: A novel dual-edge implicit pulse-triggered flip-flop with an embedded clock-gating scheme (DIFF-CGS)is proposed, which employs a transmission-gate-logic (TGL) based clock-gating scheme in the pulse generationdisables the inverter chain when the input data are kept unchanged, so redundant transitions of delayed clock

Keywords： Low power     Flip-flop     Implicit     Clock-gating scheme     Dual-edge    

HTML PDF Collect

Novel method for the preparation of Cs-containing FAU(Y) catalysts for aniline methylation

Olga A. Ponomareva, Polina A. Shaposhnik, Marina V. Belova, Boris A. Kolozhvari, Irina I. Ivanova

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 1,   Pages 70-76 doi: 10.1007/s11705-017-1694-3

Abstract: Cs-containing FAU(Y)-type zeolite catalysts were prepared by conventional and novel ion exchange proceduresX-ray fluorescence analysis, X-ray powder diffraction, scanning electron microscopy, Na, Al and CsCatalytic properties of Cs-containing FAU(Y) were studied in aniline methylation.

Keywords： FAU(Y) zeolite     ion exchange with cesium     aniline alkylation     N-methylaniline    

HTML PDF Collect

Design and simulation of a standing wave oscillator based PLL

Wei ZHANG,You-de HU,Li-rong ZHENG

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 3,   Pages 258-264 doi: 10.1631/FITEE.1500210

Abstract: A standing wave oscillator (SWO) is a perfect clock source which can be used to produce a high frequencyclock signal with a low skew and high reliability.This PLL can be used not only as a clock source, but also as a clock distribution network to providehigh quality clock signals.

Keywords： Standing wave oscillator (SWO)     Clock distribution     Phase locked loop (PLL)     Varactor    

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

Asymmetric transfer hydrogenation of prochiral ketone catalyzed over Fe-CS/SBA-15 catalyst

XUE Ping, WU Tao

Journal Article

Gradient-based compressive image fusion

Yang CHEN,Zheng QIN

Journal Article

Influence of Tensile Overload on Fatigue Life of LC4CS Al-alloy After Corrosion

Jiang Hui,Yang Xiaohua

Journal Article

Sediment environmental capacity of 137Cs in Daya Bay

ZHANG Junli, CHEN Jiajun, XU Jialin, LI Yuanxin, HUANG Naiming

Journal Article

Gushing metal chain

Alexander BELYAEV,Alexander SUKHANOV,Alexander TSVETKOV

Journal Article

All-inorganic TiO/CsAgBiBr composite as highly efficient photocatalyst under visible light irradiation

Journal Article

evaluation of heavy metal contamination of sediment in Lake Dianchi by using modified AHP method and Cs

ZHANG Yan, GAO Xiang, ZHONG Zhenyu, PENG Buzhuo, DENG Xihai

Journal Article

Consistency of MGEX Orbit and Clock Products

Peter Steigenberger, Oliver Montenbruck

Journal Article

Catalytic hydrogenation of insoluble organic matter of CS/Acetone from coal over mesoporous HZSM-5 supported

Journal Article

Wide-range tracking technique for process-variation-robust clock and data recovery applications

Jun-sheng LV, You LI, Yu-mei ZHOU, Jian-zhong ZHAO, Hai-hua SHEN, Feng ZHANG

Journal Article

analysis of corrugated panels using homogenization models and a cell-based smoothed mindlin plate element (CS-MIN3

Nhan NGUYEN-MINH, Nha TRAN-VAN, Thang BUI-XUAN, Trung NGUYEN-THOI

Journal Article

Power-efficient dual-edge implicit pulse-triggered flip-flop with an embedded clock-gating scheme

Liang GENG,Ji-zhong SHEN,Cong-yuan XU

Journal Article

Novel method for the preparation of Cs-containing FAU(Y) catalysts for aniline methylation

Olga A. Ponomareva, Polina A. Shaposhnik, Marina V. Belova, Boris A. Kolozhvari, Irina I. Ivanova

Journal Article

Design and simulation of a standing wave oscillator based PLL

Wei ZHANG,You-de HU,Li-rong ZHENG

Journal Article