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Preparation of ternary Cr_2 O_3-SiC-TiO_2 composites for the photocatalytic production of hydrogen

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Particuology 2012年第1期10卷 46-50页

作者： Yaojun Zhang Yong Xu tuo li Yachao Wang School of Material Science and Engineering Xi＇an University of Architecture and Technology Xi＇an 710055 China State Key Laboratory of Architecture Science and Technology in West China （XAUAT） Xi＇an University of Architecture and Technology Xi＇an 710055 China

Novel ternary Cr2O3-SiC-TiO2 composites were synthesized by implanting Cr3＋ into SiC-TiO2 via sol-gel and impregnation approaches. The results from X-ray diffraction, scanning electron microscopy and trans- mission electron microscopy show that the Cr3. species were doped onto the surface of the SiC-TiO2 carrier. The diffuse reflectance ultraviolet-visible absorption spectra revealed that the absorption edges of the ternary Cr2O3-SiC-TiO2 composites were gradually shifted red with increasing chromium content. The luminescence intensities of the composites decreased with increasing doped Cr3＋ content due to the reduction in the number of recombination sites of electron-hole pairs. The ternary Cr2O3-SiC-TiO2 com- posites showed high hydrogen-producing activities, which probably results from the formation of donor levels of the Cr3＋ species in the forbidden band of the SiC semiconductor.

关键词： Ternary compositesPhotocatalysisHydrogen productionChromium species

An analysis of TinyML@ICCAD for implementing AI on low-power microprocessor

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Science China(Information Sciences) 2024年第4期67卷 343-344页

作者： Guoqing li Jingwei ZHANG Meng ZHANG tuo li Tinghuan CHEN Jun YANG Shandong Yunhai Guochuang Cloud Computing Equipment Industry Innovation Co. Ltd. School of Integrated Circuits Southeast University Shandong Inspur Artificial Intelligence Research Institute Co. Ltd. School of Science and Engineering The Chinese University of Hong Kong

Tiny machine learning(ML) is an important application area of artificial intelligence(AI), which focuses on deploying AI on small hardware platforms with constrained resources [1, 2]. The high-level TinyML contests at high-level conferences promote the development of TinyML areas, such as DAC-SDC [3] and TinyML@ICCAD [4].

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The Time and Energy Dependence of the Vela Pulsar's Pulse Profile inγ-Ray

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Research in Astronomy and Astrophysics 2022年第4期22卷 128-136页

作者： lin-li Yan Ming-Yu Ge You-li tuo ling-jun Wang Qing-yong Zhou School of Mathematics and Physics Anhui Jianzhu UniversityHefeiAnhui 230601China Key Laboratory of Architectural Acoustics Environment of Anhui High Education Institutes HefeiAnhui 230601China Key Laboratory of Advanced Electronic Materials and Devices Anhui Jianzhu UniversityHefeiAnhui 230601China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China State Key Laboratory of Geographic Information Engineering Xi'an Institute of Surveying and MappingXi'an 710054China

We analyze the time and energy dependence of the Vela pulsar’s pulse profile using 13 yr observations from the Large Area Telescope on the Fermi Gamma-ray Space *** is found that the pulse profile of the Vela pulsar inγ-ray changes with *** parameterize the pulse profile and find that different shape parameters show fiuctuations rather than gradual changes with ***,these time variation trends are insignificant due to limited *** pulse profile of the Vela pulsar displays clear energy dependence inγ-*** shape parameters are accurately obtained or updated,especially the phase separations among different *** energy evolution trends are quantified for the first time,which will provide restrictions on currentγ-ray emission *** the Vela pulsar,we also find a turning point at *** and after this phase,the relative intensity of the pulse profile evolves with energy with the opposite trend.

关键词： stars:neutron (stars:)pulsars:individual(Vela) gamma-rays:stars Pulsars(1306) Gamma-ray sources(633)

Whole-exome sequencing identifies novel mutations in genes responsible for retinitis pigmentosa in 2 nonconsanguineous Chinese families

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International Journal of Ophthalmology(English edition) 2019年第6期12卷 915-923页

作者： Yan-Shan Hu Hui Song Yin li Zi-Yun Xiao tuo li Department of Ophthalmology the Central Hospital of Enshi Autonomous Prefecture Enshi Clinical College of Wuhan University

AIM: To detect the pathogenetic mutations responsible for nonsyndromic autosomal recessive retinitis pigmentosa(RP) in 2 nonconsanguineous Chinese families. METHODS: The clinical data, including detailed medical history, best corrected visual acuity(BCVA), slit-lamp biomicroscope examination, fundus photography, optical coherence tomography, static perimetry, and full field electroretinogram, were collected from the members of 2 nonconsanguineous Chinese families preliminarily diagnosed with RP. Genomic DNA was extracted from the probands and other available family members;wholeexome sequencing was conducted with the DNA samples provided by the probands, and all mutations detected by whole-exome sequencing were verified using Sanger sequencing in the probands and the other available family members. The verified novel mutations were further sequenced in 192 ethnicity matched healthy ***: The patients from the 2 families exhibited the typical symptoms of RP, including night blindness and progressive constriction of the visual field, and the fundus examinations showed attenuated retinal arterioles, peripheral bone spicule pigment deposits, and waxy optic discs. Whole-exome sequencing revealed a novel nonsense mutation in FAM161 A(c.943 A>T, ***315*) and compound heterozygous mutations in RP1 L1(c.56 C>A, ***19 His;c.5470 C>T, ***1824*). The nonsense c.5470 C>T, ***1824* mutation was novel. All mutations were verified by Sanger sequencing. The mutation ***315* in FAM161A co-segregated with the phenotype, and all the nonsense mutations were absent from the ethnicity matched healthy controls and all available ***: We identify 2 novel mutations in genes responsible for autosomal recessive RP, and the mutation in FAM161A is reported for the first time in a Chinese population. Our result not only enriches the knowledge of the mutation frequency and spectrum in the genes responsible for nonsyndromic RP but also provides a new target for

关键词： retinitis pigmentosa nonsyndromic whole-exome sequencing mutation novel

Influence of Metal Cations and Cholesterol on lipid-amphotericin Membrane

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Chemical Research in Chinese Universities 2017年第3期33卷 447-453页

作者： WANG Juan SUN Runguang HAO Changchun li tuo TIAN Yuan ZHANG Lei Engineering Technology Research Center of Controllable Neutron Source and Its Application Department of Applied Statistics and Science Xijing University Xi 'an 710123 P. R. China Laboratory of Biophysics and Biomedicine College of Physics and Information Technology Shaanxi Normal University Xi'an 710119 P. R. China

Amphotericin B（AmB） has been widely used in antifungal therapy. AraB molecules combine with cholesterol to form pores that can be toxic to human cells, thus greatly limiting its clinical application. The interaction between Arab and the cell membrane may be influenced by potassimn, sodium and calcium ions. Lq this study, the bilayer in large unilamellar lipid-drug liposomes with or without cholesterol was employed as a model membrane. N-（7-Nitrobenz-2-oxa-1,3-diazol-4-yl）-1,2-dipalmitoyl-sn-glycero-3-phosphoetheanolamine（N-BD-PE） and 1-palmi-toyl-2-[6（7-nitrobenz-2-oxa-1,3-diazol-4-yl）aminodoclecanoyl]-sn-glysero-3-phosphocholine（6-NBD-PC） are two kinds of fluorescent lipid probes, and the NBD group is attached to the polar lipid headgroup in the former, but to the sn-2 fatty acyl chain in the latter. The effect of these metal cations on the lipid-drug membrane was monitored by red edge excitation shift（REES）, fluorescence polarization, and the fluorescence lifetime of lipid probes in hydrophilic and hydrophobic areas of the membrane. These ions have different effects on the lipid-AraB membrane. Cholesterol can strengthen the packing ability of the membrane, which is influenced differently by potassium, sodium and calcium ions. Moreover, the influence of these ions on the membrane may be relative to the method of ion transportation through the membrane. This study is significant to understand the reduction of AraB＇s cellular toxicity.

关键词： Amphotericin B NBD-labeled lipid Red edge excitation shift Metal cation Fluorescence polarization

Multi-domain equivalent method for prediction of elastic modulus of complex fractured rock mass

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Journal of Mountain Science 2023年第3期20卷 859-872页

作者： JIAO Feng-yu WANG Hui-dong li tuo CHEN Yun MA Guo-wei School of Civil and Transportation Engineering Hebei University of TechnologyTianjin 300401China Tianjin Key Laboratory of Prefabricated Building and Intelligent Construction Hebei University of TechnologyTianjin 300401China

Reliable estimation of deformation and failure behaviors of fractured rock mass is important for practical engineering *** study proposes a multi-domain equivalent method for fracture network to estimate the deformation properties of complex fractured rock *** comprehends both the advantages of the discrete fracture network model and the equivalent continuum model to capture the features of discontinuities explicitly while reducing computational *** complex fracture network is stochastically split into a number of subfracture networks according to the domain,length or *** analytical solution is derived to infer theoretically the relationship between the elastic moduli of the original complex fractured rock mass and the split subfractured rock masses by introducing a correction term based on the deformation superposition *** simulations are conducted to determine the elastic moduli of split subfractured rock masses using universal distinct element code(UDEC),while the elastic modulus of the original model is estimated based on the currently proposed analytical *** results show that the estimation accuracy with the current domainbased splitting model is far superior compared to those with the other two splitting ***,the estimation method of elastic modulus of complex fractured rock mass based on domain splitting mode of fracture network is identified as the multi-domain equivalent method proposed in this *** reliability of this method is evaluated,and its high computational efficiency is demonstrated through exemplification with regard to different geometric configurations for stochastically artificial discrete fracture *** proposed multi-domain equivalent method constructs the theoretical framework except for the regression analysis hypothesis compared to the density-reduced model equivalent method.

关键词： Fractured rock masses Discrete fracture network Rock mass deformability Multi-domain equivalent method

Insight-HXMT observations of the Crab pulsar

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Research in Astronomy and Astrophysics 2019年第6期19卷 109-116页

作者： You-li tuo Ming-Yu Ge li-Ming Song lin-li Yan Qing-Cui Bu Jin-Lu Qu Key Laboratory of Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China University of the Chinese Academy of Sciences Beijing 100049 China School of Mathematics and Physics Anhui Jianzhu University Hefei 230601 China

We report on X-ray emission properties of the Crab pulsar(PSR B0531+21) using observations by Insight-HXMT during its first year after launch. We obtained high signal-to-noise profiles in the X-ray energy band 11–250 keV. We have confirmed an increase in the flux ratio of the second peak over the main peak with increasing energy, consistent with other missions. The separation of the two peaks shows no significant trend with increasing energy. The phase-averaged spectrum, fitted by a logpar model, and the phase-resolved spectra of the Crab pulsar, fitted by a powerlaw in the different energy bands of HXMT, are consistent with RXTE and NuSTAR in that photon indices evolve as a function of phase as well as a function of energy, contributing to a broadband modeling.

关键词： stars neutron star-pulsars individual(Crab)-X-rays

Abnormal expression of WIF1 in hepatocellular carcinoma cells and its regulating effect on invasion and metastasis factors of TIMP-3 and caveolin-1 of hepatocellular carcinoma

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Asian Pacific Journal of Tropical Medicine 2015年第11期8卷 934-939页

作者： Guang Song Hong-Xia Cao Shao-Xin Yao Cang-tuo li Department of Interventional Therapy Affiliated Tangshan Workers Hospital of Hebei Medical University

Objective:To discuss the abnormal expression of Wnt inhibitory factor(WIFI) in hepatocellular carcinoma cells and its regulating effect on the hepatocellular carcinoma invasion and metastasis factors of tissue inhibitor of matrix metalloproteinases-3(TIMP-3)and ***:RT-PCR and Western blot were employed to detect the expression of WIF1 in six hepatocellular carcinoma eell lines of HepG2,Hep3 B,Huh7,PLC/PRF/***-7721 and MHCC97 and the immortalized human liver cell line ***,lipofectamine 2000 was employed to transfect the eukaryotic expression vector ***1 and blank plasmid pcDNA3.1 into hepatocellular carcinoma cell *** assay was used to detect the effect of WIF1 on the invasion ability of hepatocellular carcinoma cells;Western blot was used to detect the effect of WIF1 on the expression of TIMP-3 and caveolin-1in hepatocellular carcinoma cells,it also discussed the effect on the expression of β-***:The expression of WIF1 in hepatocellular carcinoma cell lines was lower than that in the normal liver cell lines(Pline MHCC-97 and moderate expression in HepG2 and ***,HepG2 and SMMC-7721 were chosen as the further experimental cell *** transfecting the eukaryotic expression vector peDNA3.1-WEFl and blank plasmid pcDNA3.1 into hepatocellular carcinoma eell lines,compared with(he blank plasmid group,the cell viability and invasion ability in the WIF1 group were all reduced(Plin-1 and mRNA were all down-regulated(Plines,the up-regulation of WIFI expression can significantly inhibit the invasion and metastasis of HepG2 and SMMC-7721 of hepatocellular carcinoma cell lines,which are related to the up-regula

关键词： WIF1 Hepatocellular carcinoma TIMP-3 Caveolin-1

Multiphonon-resonance quantum Rabi model and adiabatic passage in a cavity-optomechanical system

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Frontiers of physics 2022年第1期17卷 79-87页

作者： Zhi-Rong Zhong Lei Chen Jian-Qi Sheng li-tuo Shen Shi-Biao Zheng Fujian Key Laboratory of Quantum Information and Quantum Optics College of Physics and Information EngineeringFuzhou UniversityFuzhou350108China

In this paper,we propose a scheme to achieve a multiphonon-resonance quantum Rabi model and adiabatic passage in a strong-coupling cavity optomechanical *** the scheme,when the driving bichromatic laser beam is adjusted to the off-resonant j-order red-and blue-sideband,the interaction between the cavity and mechanical oscillator leads to a j-phonon resonance quantum Rabi ***,we show that there exists a resonant multi-phonon coupling via intermediate states connected by counter-rotating processes when the frequency of the simulated bosonic mode is near a fraction of the transition frequency of the simulated two-level *** a typical example,we theoretically analyze the two-phonon resonance quantum Rabi model,and derive an effective Hamiltonian of the six-phonon ***,we present a method of six-phonon generation based on adiabatic passage across the *** simulations confirm the validity of the proposed ***,the proposed scheme can be extended to the realization of 3j-phonon state.

关键词： quantum Rabi model cavity-optomechanical system adiabatic passage