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Synergy of heterogeneous Co/Ni dual atoms enabling selective C-O bond scission of lignin coupling with in-situ N-functionalization

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Journal of Energy Chemistry 2024年第5期92卷 16-25页

作者： Baoyu Wang Jinshu huang Hongguo Wu Ximing Yan Yuhe liao hu Li National Key Laboratory of Green Pesticide Key Laboratory of Green Pesticide&Agricultural BioengineeringMinistry of EducationState-Local Joint Laboratory for Comprehensive Utilization of BiomassCollege of Pharmacy&Center for R&D of Fine ChemicalsGuizhou UniversityGuiyang 550025GuizhouChina Guangxi Key Laboratory of Green Chemical Materials and Safety Technology Beibu Gulf UniversityQinzhou 535011GuangxiChina Guangzhou Institute of Energy Conversion Chinese Academy of SciencesGuangzhou 510640GuangdongChina

Selective cleavage of Csp^(2)-OCH_(3)bond in lignin without breaking other types of C-O bonds followed by N-functionalization is fascinating for on-purpose valorization of ***,a Co/Ni-based dual-atom catalyst CoNiDA@NC prepared by in-situ evaporation and acid-etching of metal species from tailor-made metal–organic frameworks was efficient for reductive upgrading of various lignin-derived phenols to cyclohexanols(88.5%–99.9%yields),which had ca.4 times higher reaction rate than the single-atom catalyst and was superior to state-of-the-art heterogeneous *** synergistic catalysis of Co/Ni dual atoms facilitated both hydrogen dissociation and hydrogenolysis steps,and could optimize adsorption configuration of lignin-derived methoxylated phenols to further favor the Csp^(2)-OCH_(3)cleavage,as elaborated by theoretical ***,the CoNi_(DA)@NC catalyst was highly recyclable,and exhibited excellent demethoxylation performance(77.1%yield)in real lignin monomer *** in-situ cascade conversion processes assisted by dual-atom catalysis,various high-value N-containing chemicals,including caprolactams and cyclohexylamines,could be produced from lignin.

关键词： Biomass conversion Heterogeneous catalysis Lignin Dual-atom catalyst Selective C-ocleavage

Morphological residual convolutional neural network(M-RCNN)for intelligent recognition of wear particles from artificial joints

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Friction 2022年第4期10卷 560-572页

作者： Xiaobin hu Jian SONG Zhenhua liao Yuhong LIU Jian GAO Bjoern MENZE Weiqiang LIU Department of Computer Science Technical University of MunichGarching 85748Germany School of Biomedical Engineering Sun Yat-sen UniversityGuangzhou 510006China Key Laboratory of Biomedical Materials and Implant Devices Research Institute of Tsinghua University in ShenzhenShenzhen 518057China State Key Laboratory of Tribology Tsinghua UniversityBeijing 100084China Mckelvey School of Engineering Washington University in Saint LouisSt.LouisMO 63130USA

Finding the correct category of wear particles is important to understand the tribological ***,manual identification is tedious and *** here propose an automatic morphological residual convolutional neural network(M-RCNN),exploiting the residual knowledge and morphological priors between various particle *** also employ data augmentation to prevent performance deterioration caused by the extremely imbalanced problem of class *** results indicate that our morphological priors are distinguishable and beneficial to largely boosting overall performance.M-RCNN demonstrates a much higher accuracy(0.940)than the deep residual network(0.845)and support vector machine(0.821).This work provides an effective solution for automatically identifying wear particles and can be a powerful tool to further analyze the failure mechanisms of artificial joints.

关键词： wear particles classifier morphological priors data augmentation deep residual network

Effects of interfacial residual stress on mechanical behavior of SiC_(f)/SiC composites

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Journal of Advanced Ceramics 2022年第1期11卷 94-104页

作者： Xiaowu CHEN Guofeng CHENG Jinshan YANG Jianbao hu Chunjin liao Xiangyu ZHANG Shaoming DONG State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China Structural Ceramics and Composites Engineering Research Center Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China Analysis and Testing Center for Inorganic Materials Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China

Layer-structured interphase,existing between reinforcing fiber and ceramics matrix,is an indispensable constituent for fiber-reinforced ceramic composites due to its determinant role in the mechanical behavior of the ***,the interphase may suffer high residual stress because of the mismatch of thermal expansion coefficients in the constituents,and this can exert significant influence on the mechanical behavior of the ***,the residual stress in the boron nitride(BN)interphase of continuous SiC fiber-reinforced SiC composites was measured using a micro-Raman *** effects of the residual stress on the mechanical behavior of the composites were investigated by correlating the residual stress with the mechanical properties of the *** results indicate that the residual stress increases from 26.5 to 82.6 MPa in tension as the fabrication temperature of the composites rises from 1500 to 1650℃.Moreover,the increasing tensile residual stress leads to significant variation of tensile strain,tensile strength,and fiber/matrix debonding mode of the *** sublayer slipping of the interphase caused by the residual stress should be responsible for the transformation of the mechanical *** work can offer important guidance for residual stress adjustment in fiber-reinforced ceramic composites.

关键词： ceramic matrix composites Raman spectroscopy mechanical properties residual stress

Diurnal expression of circadian clock genes period 1 and period 3 in Pelteobagrus vachellii

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Journal of Oceanology and Limnology 2021年第2期39卷 652-660页

作者： Chuanjie QIN Ting SHAO Xufeng liao Yang HE Jun WANG Peng hu Key Laboratory of Sichuan Province for Fishes Conservation and Utilization in the Upper Reaches of the Yangtze River Neijiang Normal UniversityNeijiang 641112China College of Life Science Neijiang Normal UniversityNeijiang 641112China

Circadian clock genes are crucial for generating and sustaining most rhythmic daily functions in the animal kingdom,which entrain the rhythms of biochemical,physiological,and behavioural *** better understand the molecular oscillations of the circadian rhythms in darkbarbel catfish(Pelteobagrus vachellii),we isolated and characterized two circadian clock genes in ***,period 1(per1),and period 3(per3).The circadian clock gene per1 was found to encode a 1428-amino acid polypeptide,including PER-ARNT-SIM(PAS)dimerisation domains,a PAS-associated C-terminal motif(PAC),a short mutable domain(S/M),and a nuclear export signal(NES).The 4902-bp per3 cDNA includes an open reading frame encoding a 1292-amino acid residue polypeptide with a PER-ARNT-SIM(PAS)domain,cytoplasmic localisation domain(CLD),interaction site(TIS),and a nuclear localisation signal(NLS).The per1 and per3 gene was constitutively expressed in all examined ***,per1 expression within a light/dark cycles showed rhythmic expression in the diencephalon,brain,liver and intestine,with the acrophase at 15:15,12:52,7:51 and 12:55,*** expression of per3 was rhythmic in the diencephalonbrain,liver and intestine,with the acrophase at 8:15,9:54,10:39,and 10:25 h,*** findings expand our understanding of circadian mechanism at the molecular level in this species.

关键词： cDNA circadian rhythm diurnal expression Pelteobagrus vachellii period 1 period 3

Quantum multiparameter estimation with multimode photon catalysis entangled squeezed state

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Frontiers of physics 2023年第4期18卷 265-276页

作者： huan Zhang Wei Ye Shoukang Chang Ying Xia Liyun hu Zeyang liao School of Physics Sun Yat-sen UniversityGuangzhou 510275China School of Information Engineering Nanchang Hangkong UniversityNanchang 330063China MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic DevicesSchool of PhysicsXi’an Jiaotong UniversityXi’an 710049China Center for Quantum Science and Technology Jiangxi Normal UniversityNanchang 330022China

We propose a method to generate the multi-mode entangled catalysis squeezed vacuum states(MECSVS)by embedding the cross-Kerr nonlinear medium into the Mach–Zehnder *** method realizes the exchange of quantum states between different modes based on Fredkin *** addition,we study the MECSVS as the probe state of multi-arm optical interferometer to realize multi-phase simultaneous *** results show that the quantum Cramer–Rao bound(QCRB)of phase estimation can be improved by increasing the number of catalytic photons or decreasing the transmissivity of the optical beam splitter using for photon *** addition,we also show that even if there is photon loss,the QCRB of our photon catalysis scheme is lower than that of the ideal entangled squeezed vacuum states(ESVS),which shows that by performing the photon catalytic operation is more robust against photon loss than that without the catalytic *** results here can find applications in quantum metrology for multiparatmeter estimation.

关键词： quantum metrology squeezing vacuum quantum catalysis multi-parameter estimation

Analysis of Bright Source Hardness Ratios in the 4 yr Insight-HXMT Galactic Plane Scanning Survey Catalog

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Research in Astronomy and Astrophysics 2024年第2期24卷 154-170页

作者： Chen Wang Jin-Yuan liao Ju Guan Yuan Liu Cheng-Kui Li Na sai Jing Jin Shuang-Nan Zhang Key Laboratory of Space Astronomy and Technology National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Department of Astronomy School of Physics and TechnologyWuhan UniversityWuhan 430072China Whu-NAOC Joint Center for Astronomy Wuhan UniversityWuhan 430072China

We conduct a statistical analysis of the hardness ratio(HR)for bright sources in the 4 yr Galactic Plane Scanning Survey catalog of *** on the stable(variable)flux F_(s)(F_(v))or spectrum S_(s)(S_(v))of each source,the bright sources are classified into three groups:F_(v)&S_(v),F_(v)&S_(s),and F_(s)&_(s).Our study of the HR characteristics in different types of sources reveals that accretion-powered neutron star(NS)low-mass X-ray binaries(LMXBs)exhibit softer energy spectra than NS high-mass X-ray binaries(HMXBs),but harder energy spectra than black hole binaries in most *** difference is probably due to their different magnetic field ***,Fv&Sv LMXBs tend to be harder than Fv&Ss LMXBs below 7 keV,while the opposite is true for *** results suggest that LMXBs may dominate unclassified sources,and NS binaries are likely to be the primary type of X-ray binaries with ambiguous compact *** comparing the HR of transient sources in their outburst and low-flux states,it is found that the averaged HR of four sources in the two states are roughly comparable within *** also investigate the spatial properties of the three groups and find that Fv&Sv sources are mainly located in the longitude of-20°

关键词： catalogs-surveys-methods data analysis-X-rays general

Bloodletting puncture in the treatment of acute ischemic stroke:protocol for a mixed-method study of a multi-center randomized controlled trial and focus group

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Journal of Traditional Chinese Medicine 2023年第6期43卷 1259-1267页

作者： DAI Zeqi liao Xing GUAN Yueyue ZENG Zixiu TANG Jun hu Jing Center for Evidence Based Chinese Medicine Institute of Basic Research in Clinical MedicineChina Academy of Chinese Medical SciencesBeijing 100700China Department of Encephalopathy Chongqing Hospital of Traditional Chinese MedicineChongqing 400021China Evidence-based Medicine Center Beijing Hospital of Traditional Chinese MedicineCapital Medical UniversityBeijing Institute of Traditional Chinese MedicineBeijing 100010China

This study is to investigate the effectiveness and safety of bloodletting puncture(BP)for acute ischemic stroke(AIS)when used in combination with standard treatment,as well as the patients'feelings and attitudes toward the *** is a mixed method research which includes a multi-center,superiority,randomized controlled clinical trial,and focus group interview.A total of 360 AIS participants will be *** will be randomized into one of the following two groups for 7 d:(a)BP with standard treatment group(n=180);(b)standard treatment group(n=180).The primary outcome will be National Institute of Health stroke scale(NIHSS)score at day 7 after *** outcomes will be changes of Glasgow Coma Scale score,NIHSS score,mRS and Traditional Chinese Medicine syndrome score from baseline to 7,14,and 30 d after treatment,recurrence rate and all-cause mortality rate within 30 d,and the safety *** focus group will be conducted with a purposive sample of 1-2 acupuncturists and 1-2 patients respectively at each center at 7 and 30 d after *** designed a mixed method study to evaluate the effect of BP,an acupuncture therapy for patients with *** the findings of this study confirm the effectiveness of BP to reduce the NIHSS score and other related outcomes and patients are willing to accept the therapy,we believe this study will help the implementation of this therapy in clinical practice,and provide new evidence for the treatment of AIS.

关键词： bloodletting punctures ischemic stroke equivalence trial randomized controlled trial focus groups clinical protocols

Covert LEO Satellite Communication Aided by Generative Adversarial Network Based Cooperative UAV Jamming

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China Communications 2024年第9期21卷 27-39页

作者： Shi Jia Li Xiaomeng liao Xiaomin Tie Zhuangzhuang hu Junfan School of Communication Engineering Xidian UniversityXi’an 710071China School of Information and Communications National University of Defense TechnologyWuhan 410073China

In this paper,we study the covert performance of the downlink low earth orbit(LEO)satellite communication,where the unmanned aerial vehicle(UAV)is employed as a cooperative *** maximize the covert rate of the LEO satellite transmission,a multi-objective problem is formulated to jointly optimize the UAV’s jamming power and *** practical consideration,we assume that the UAV can only have partial environmental information,and can’t know the detection threshold and exact location of the eavesdropper on the *** solve the multiobjective problem,we propose the data-driven generative adversarial network(DD-GAN)based method to optimize the power and trajectory of the UAV,in which the sample data is collected by using genetic algorithm(GA).Simulation results show that the jamming solution of UAV generated by DD-GAN can achieve an effective trade-off between covert rate and probability of detection errors when only limited prior information is obtained.

关键词： covert communication generative adversarial network LEO satellite UAV jammer

Identification of a pleiotropic QTL cluster for Fusarium head blight resistance,spikelet compactness,grain number per spike and thousand-grain weight in common wheat

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The Crop Journal 2023年第2期11卷 672-677页

作者： Wenjing hu Derong Gao Sen liao Shunhe Cheng Jizeng Jia Weigang Xu Key Laboratory of Wheat Biology and Genetic Improvement for Low&Middle Yangtze Valley Ministry of Agriculture and Rural AffairsLixiahe Institute of Agricultural SciencesYangzhou 225007JiangsuChina Henan Agricultural University/Collaborative Innovation Center of Henan Grain Crops Zhengzhou 450002HenanChina Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China Institute of Crop Molecular Breeding/National Engineering Laboratory of Wheat/Key Laboratory of Wheat Biology and Genetic Breeding in Central huanghuai Area/Ministry of Agriculture/Henan Key Laboratory of Wheat Germplasm Resources Innovation and Improvement Henan Academy of Agricultural SciencesZhengzhou 450002HenanChina

Simultaneously improving Fusarium head blight(FHB)resistance and grain yield is challenging in wheat *** correlations between spikelet compactness(SC),grain number per spike(GNS),thousandgrain weight(TGW)and FHB resistance remains unclear in common *** of major quantitative trait loci(QTL)conferring FHB resistance and yield components,and development of breeder-friendly markers for the QTL are prerequisites for marker-assisted selection(MAS).Here,a recombinant inbred line(RIL)population derived from a cross between a resistant cultivar Yangmai 12(YM12)and a susceptible cultivar Yanzhan 1(YZ1)was used to map QTL for FHB resistance and yield components.A total of 22 QTL were identified;among these,six are likely to be new for corresponding traits.A QTL cluster(***-2D)for FHB type II resistance,SC,GNS,and TGW was detected on chromosome ***-friendly kompetitive allele-specific PCR(KASP)markers flanking the interval of ***-2D were developed and validated in a diverse panel of 166 wheat cultivars and advanced *** YM12 alleles of ***-2D significantly increased FHB resistance,SC,and GNS but decreased TGW in the validation *** KASP markers developed for ***-2D have great potential for breeding high-yielding wheat cultivars with enhanced FHB resistance.

关键词： Fusarium graminearum KASP marker QTL cluster Triticum aestivum