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Glioma Segmentation-Oriented Multi-Modal MR Image Fusion With Adversarial Learning

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IEEE/CAA Journal of Automatica Sinica 2022年第8期9卷 1528-1531页

作者： yu liu yu Shi Fuhao Mu Juan Cheng Xun Chen Department of Biomedical Engineering Hefei University of TechnologyHefei 230009 Anhui Province Key Laboratory of Measuring Theory and Precision Instrument Hefei University of TechnologyHefei 230009China Department of Neurosurgery the First Affiliated Hospital of USTCDivision of Life Sciences and Medicineand also with the Department of Electronic Engineering and Information ScienceUniversity of Science and Technology of ChinaHefei 230001China

Dear Editor,In recent years,multi-modal medical image fusion has received widespread attention in the image processing ***,existing works on medical image fusion methods are mostly devoted to pursuing high performance... 详细信息

关键词： Image image devoted

Spectrofluorimetric determination of trace amounts of cadmium with 2,4-dihydroxyacetophenone benzoylhydrazone

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Rare Metals 2006年第2期25卷 184-189页

作者： liu Jianning ZHANG Bing WU Bowan liu Yongchun yu Xinqiao Department of Chemistry Longdong University Qingyang 745000 China

A new fluorescent reagent 2,4-dihydroxyacetophenone benzoylhydrazone （DHAPBH） was synthesized and its ionization constants were established spectrophotometrically. The fluorescent reaction of this reagent with cadmium was studied. The cadmium ion can form a stable binary chelate with DHAPBH, having a mole ratio of 1 ：2 in the pH range of 3.6-4.4. Based on this chelation reaction, a highly sensitive spectrofiuorimetric method was developed for determination of trace amounts of cadmium in a water-ethanol （7：3 in volume ratio） medium at pH = 4.0. Under these conditions, the Cd-DHAPBH complex has excitation and emission maxima at 306 and 437 nm, respectively. The linear range of the method is from 0.36 to 140μtg·L^-1 and the detection limit is 0.27 μtg·L^-1 of cadmium. Interferences of other ions were studied. The method was successfully applied to the determination of cadmium in mineral water, tap water, fiver water, and wastewater.

关键词： cadmium 2,4-dihydroxyacetophenone benzoylhydrazone spectrofiuorimetry determination

Numerical study of coarse coal particle breakage in pneumatic conveying

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Particuology 2018年第3期16卷 204-214页

作者： Jiawei Zhou yu liu Changlong Du Songyong liu Jianping Li School of Mechatronic Engineering China University of Mining and Technology Xuzhou 221116 Jiangsu China School of Mechanical and Power Engineering Henan Polytechnic University Jiaozuo 454000 Henan China

Pneumatic conveying of coarse coal particles with various pipeline configurations and swirling intensities was investigated using a coupled computational fluid dynamics and discrete element method. A particle cluster agglomerated by the parallel-bond method was modeled to analyze the breakage of coarse coal particles. The numerical parameters, simulation conditions, and simulation results were experimentally validated. On analyzing total energy variation in the agglomerate during the breakage process, the results showed that downward fluctuation of the total particle energy was correlated with particle and wall col- lisions, and particle breakage showed a positive correlation with the energy difference. The correlation between the total energy variation of a particle cluster and particle breakage was also analyzed. Parti- cle integrity presented a fluctuating upward trend with pipe bend radius and increased with swirling number for most bend radii. The degree of particle breakage differed with pipeline bending direction and swirling intensity： in a horizontal bend, the bend radius and swirling intensity dominated the total energy variations： these effects were not observed in a vertical bend. The total energy of the particle cluster exiting a bend was generally positively correlated with the bend radius for all conditions and was independent of bending direction.

关键词： Computational fluid dynamics-discreteelement method Pneumatic conveying Pipeline configuration Swirling intensity Coarse coal particle Breakage

Transient fuel performance analysis of UO_(2)–BeO fuel with composite SiC coated with Cr cladding based on multiphysics method

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维普期刊数据库

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Nuclear Science and Techniques 2023年第12期34卷 93-108页

作者： Chun‑yu Yin Shi‑Xin Gao Sheng‑yu liu Rong liu Guang‑Hui Su Li‑Bo Qian School of Nuclear Science and Technology Xi’an Jiaotong UniversityXi’an 710049China Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of ChinaChengdu 610213China School of Electric Power South China University of TechnologyGuangzhou 510640China

The transient multiphysics models were updated in CAMPUS to evaluate the accident-tolerant fuel performance under accident *** is a fuel performance code developed based on *** simulated results of the UO_(2)–Zircaloy fuel performance under accident conditions were compared with those of the FRAPTRAN code and the experimental data to verify the correctness of the updated ***,multiphysics models of the UO_(2)–BeO fuel and composite SiC coated with Cr(SiC_(f)/SiC-Cr)cladding were implemented in ***,the fuel performance of the three types of fuel cladding systems under Loss of Coolant Accident(LOCA)and Reactivity Insertion Accident(RIA)conditions was evaluated and compared,including the temperature distribution,stress distribution,pressure evolution,and cladding failure *** results showed that the fuel temperature of the UO_(2) fuel under accident conditions without pre-irradiation was lower after being combined with SiC_(f)/SiC-Cr ***,the centerline and outer surface temperatures of the UO_(2)–BeO fuel combined with SiC_(f)/SiC-Cr cladding reduced further under accident *** cladding temperature increased after the combination with the SiC_(f)/SiC-Cr cladding under accident conditions with *** addition,the use of SiC_(f)/SiC-Cr cladding significantly reduced the cladding hoop strain and plenum pressure.

关键词： Accident condition Fuel performance UO2–BeO fuel SiCf/SiC-Cr cladding

Ocean wave parameters retrieved directly from compact polarimetric SAR data

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Acta Oceanologica Sinica 2022年第4期41卷 129-137页

作者： yu liu Yijun He Biao Zhang School of Electronic and Information Engineering Nanjing University of Information Science&TechnologyNanjing 210044China School of Marine Science Nanjing University of Information Science&TechnologyNanjing 210044China

We aim to directly invert wave parameters by using the data of a compact polarimetric synthetic aperture radar(CP SAR)and validate the effectiveness of ocean wave parameter retrieval from the circular transmit/linear receive mode andπ/4 compact polarimetric *** data from the RADARSAT-2 fully polarimetric SAR on the C-band were used to obtain the compact polarimetric SAR images,and a polarimetric SAR wave retrieval algorithm was used to verify the sea surface wave *** the data and algorithm,there is no need to estimate complex hydrodynamic modulation transfer functions,even at large radar incidence ***,the radar backscattering cross-sections and backscattering cross-section of the radar linearly polarized with any polarization orientation angle were calculated in the two compact polarimetric SAR ***,the wave slopes along the azimuth direction and the range direction were calculated directly using CP SAR ***,we obtained the slope spectrum of the wave from the estimated wave slopes along azimuth and range *** wave parameters extracted from the synthetic wave slope spectrum were compared with those obtained from buoy observations of the National Data Buoy Center,verifying a suitable agreement.

关键词： RADARSAT-2 CP SAR wave parameters wave slope spectrum

The pseudoscalar meson and baryon octet interaction with strangeness S=-2 in the unitary coupled-channel approximation

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Communications in Theoretical Physics 2022年第7期74卷 99-104页

作者： Bao-Xi Sun Xin-yu liu Faculty of Science Beijing University of TechnologyBeijing 100124China

The interaction of the pseudo scalar meson and the b ary on octet with strangeness S=-2 and isospin I=1/2 is investigated by solving the Bethe-Salpeter equation in the infinite and finite volume *** is found that there is a resonance state generated dynamically,which owns a mass of about 1550 MeV and a large decay width of 120-200 *** resonance state couples strongly to theπΞ***,it might not correspond to theΞ(1620)particle announced by Belle *** the same time,this problem is studied in the finite volume,and an energy level at 1570 MeV is obtained,which is between theπΞand KΛthresholds and independent of the cubic box size.

关键词： Bethe-Salpeter equation chiral unitary approach amplitude

Genetic algorithm based dynamic combination of polyhedron structures against multiple link failures

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The Journal of China Universities of Posts and Telecommunications 2022年第6期29卷 30-35页

作者： liu yu Li Xin Huang Shanguo School of Electronic Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China

Polyhedron protection realizes link protection by constructing a pre-assigned structure and allocates backup resources on a fixed polyhedron structure based on the maximum number of working resources. Taking into account both protection success rate and resource redundancy, this paper dynamically combines different polyhedron structures to allocate backup resources according to the link load, and proposes a genetic algorithm based dynamic combination of polyhedron structures(GA-DCPS) to reduce the resource consumption in the network while ensuring the protection success rate. GA-DCPS aims to minimize the consumption of wavelength resources, and uses the genetic strategy to find the polyhedron combination with the least redundancy to allocate backup resources while ensuring the success rate of service protection. Compared to using the fixed polyhedron structure with 1:m backup resource allocation, GA-DCPS can reduce resource redundancy by about 15% while ensuring complete protection against double-link failures.

关键词： optical networks multiple link failures polyhedron protection resource redundancy

Research Progress in Astragalus Membranaceus and Its Active Components on Immune Responses in Liver Fibrosis

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Chinese Journal of Integrative Medicine 2020年第10期26卷 794-800页

作者： liu yu-tong LV Wen-liang Shaanxi University of Traditional Chinese Medicine Xianyang(712046)Shaanxi ProvinceChina Department of Infection Guang'anmen HospitalChina Academy of Chinese Medical SciencesBeijing(100053)China

The interaction between immune cells and hepatic stellate cells(HSCs)can modulate the development of hepatic *** can also regulate hepatic fibrosis and liver cirrhosis caused by excessive deposition of extracellular matrix(ECM).This article reviews the action mechanism of immune cells on liver fibrosis and the effect of Astragalus membranaeus and its active components on immune ***-depth study of interaction between immune cells and HSCs on the pathogenesis of liver fibrosis,and the regulatory effect of Astragalus membranaeus and its active components on immune mechanism will provide new insights in the treatment of liver fibrosis.

关键词： liver fibrosis immune cell Astragalus membranaceus review

A Cyano-Substituted Organoboron Electron-deficient Building Block for D-A Type Conjugated Polymers

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Chinese Journal of Polymer Science 2023年第5期41卷 832-838,I0012页

作者： Meng-yu liu Xing-Xin Shao Jun liu Li-Xiang Wang State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China

The development of donor-acceptor(D-A)type conjugated polymers depends largely on the design of novel A building ***,we report a novel A building block based on the cyano-substituted organoboron unit(SBN-3).Compared with the most common fluorine-substituted B←N unit,SBN-3 displays a significantly downshifted LUMO energy level because of the strong electron-withdrawing ability of cyano *** addition,due to the greater impact of cyano substitution on LUMO than on HOMO,SBN-3 exhibits a reduced band gap,nearinfrared absorption and fluorescence *** D-A type conjugated polymers based on the cyano-substituted B←N unit with thiophene-based units show narrow optical band gaps of ca.1.3 e V as well as distinctive electronic structures,i.e.,delocalized LUMOs and localized *** work thus provides not only an effective approach to design strong A units but also a new electron-deficient building block for D-A type conjugated polymers.

关键词： Cyano-substituted B←N unit Building block Narrow band gap D-A type conjugated polymers