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Superior synergistic oxidation resistance of medium-entropy carbide ceramic powders rather than multi-phase carbide ceramic powders

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Journal of Advanced Ceramics 2024年第8期13卷 1223-1233页

作者： Jiachen Li Fanyu Lu tao Li Yanqin Fu Junhao zhao Junshuai Lv Yulei Zhang Shaanxi Key Laboratory of Fiber Reinforced Light Composite Materials State Key Laboratory of Solidification ProcessingNorthwestern Polytechnical UniversityXi'an 710072China

To date,some questions about medium-entropy carbide ceramics and the corresponding multi-phase carbide ceramics with the same cations and proportions remain *** oxidation behavior,do both have synergistic oxidation abilities and what role does entropy stabilization play in medium-entropy carbides?In this work,the oxidation behaviors of HfC-ZrC-TiC multi-phase carbide(HZT-MPC)and(Hf_(1/3)Zr_(1/3)Ti_(1/3))C medium-entropy carbide(HZT-MEC)powders were *** thermogravimetry(TG)oxidation,the TG curve of HZT-MPC had a bimodal ***"preferential oxidation"of HfC/ZrC occurred within HZT-MPC,followed by the formation of multi-phase oxides(HfO_(2),ZrO_(2),and TiO_(2)).The uneven compositional distribution slowed their solid solution reactions to form Ti-doped(Hf,Zr)O_(2) and(Hf,Zr)TiO_(4).The TG curve of HZT-MEC had a single peak.A uniform compositional distribution at the atomic scale promoted the rapid interdiffusion of oxides,forming Ti-doped(Hf,Zr)O_(2) and(Hf,Zr)TiO_(4) without ZrO_(2),HfO_(2),and TiO_(2) after TG ***,HZT-MEC had a higher onset oxidation temperature(To;470℃)than did HZT-MPC(430℃),and the TG single peak of HZT-MEC was between the TG bimodal peaks of ***,HZT-MEC showed superior oxidation resistance compared to HZT-MPC,which was attributed to the entropy stabilization effect of HZT-MEC suppressing the"preferential oxidation"of HfC/ZrC and the"delayed oxidation"of TiC,promoting the synergistic oxidation ability of multiple principal elements.

关键词： medium-entropy carbide multi-phase carbide synergistic oxidation ability oxidation resistance

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RPRD1B/CREPT facilitates the progression of diffuse large B-cell lymphoma by inhibiting apoptosis through the NF-κB signaling pathway

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Asian Pacific Journal of Tropical Biomedicine 2024年第7期14卷 307-318页

作者： Lu Xu Zhi-Hao Xie Jun Li Shi tao Fang-Li Ren yin-yin Wang Zhi-Jie Chang Xin-Bao Hao Department of Hematology The First Affiliated Hospital of Hainan Medical UniversityHaikou570102China State Key Laboratory of Membrane Biology School of MedicineTsinghua UniversityBeijing 100084China Heya Beijing Med-Biotech Inc. Beijing 100084China Department of Hematology Roswell Park Comprehensive Cancer CenterNY 14263USA

Objective:To investigate the role of RPRD1B in the progression of diffuse large B-cell lymphoma(DLBCL)and its potential as a therapeutic ***:This study analyzed RPRD1B expression in DLBCL and normal tissues using public databases and assessed its prognostic impact through survival *** vitro and in vivo experiments were conducted to explore the mechanisms by which RPRD1B influences tumor growth and ***:RPRD1B expression was significantly elevated in DLBCL compared to normal tissues and was associated with poor *** vitro and in vivo experiments demonstrated that RPRD1B promoted lymphoma cell proliferation and inhibited apoptosis through the NF-κB signaling ***:RPRD1B plays a critical role in the progression of DLBCL by modulating apoptosis and cellular *** RPRD1B may offer a novel therapeutic strategy for DLBCL,suggesting its potential as a prognostic marker and therapeutic target in hematological malignancies.

关键词： RPRD1B RNAPⅡ Diffuse large B-cell lymphoma NF-κB Apoptosis

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Food poisoning due to money tree seeds:a case report of toxic encephalopathy

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Emergency and Critical Care Medicine 2024年第3期4卷 126-129页

作者： Yue zhao Xiaojiao Quan tao Wang Department of Emergency Medicine Hainan Hospital of Chinese PLA General HospitalSanyaHainanChina The Center of Heat Stroke Prevention and Treatment of Peoples’Liberation Army SanyaHainanChina

Background:The money tree is a favored indoor potted plant in *** seeds resemble chestnuts in both shape and flavor when cooked,which are generally considered non-toxic and safe for *** presentation:This report presents the first published case of food poisoning due to the ingestion of large amounts of money tree seeds.A 67-year-old man exhibited toxic encephalopathy symptoms and dyspnea after consuming the seeds for approximately 6 *** empirical mechanical ventilation,therapeutic plasma exchange,and other medical interventions,the patient’s clinical status improved *** was subsequently discharged from the ***:Consuming a substantial quantity of money tree seeds within a limited timeframe can lead to poisoning,resulting in adverse outcomes,particularly toxic ***,plasma exchange may have some therapeutic effect.

关键词： Case report Money tree Pachira macrocarpa Respiratory failure Toxic encephalopathy

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Synergistic effects of multiscale TiC and dual-phase structure on tensile properties of particle-reinforced steel

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Journal of Iron and Steel Research International 2024年第5期31卷 1232-1245页

作者： Ye Jia Xiang-tao Deng Qi Wang Cheng-ru Li Hao Wu zhao-dong Wang State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang110819LiaoningChina

The conventional melting methods were used to obtain in situ TiC particle-reinforced dual-phase steel,followed by hot rolling and heat treatment *** aim was to investigate the effect of TiC particles on the fracture behavior of dual-phase steel at different annealing temperatures,by analyzing the microstructure and tensile behavior of the multiscale TiC particle-reinforced dual-phase *** results showed that TiC particles precipitated in the as-cast microstructure of dual-phase steel were distributed along the grain *** hot rolling,the grain boundary-like morphology of the micron-sized TiC particles was disrupted,and the particles became more refined and evenly distributed in the *** tensile tests revealed that the strength of the TiC particle-reinforced dual-phase steel increased with increasing martensite content,while the elongation *** results were similar to those of conventional *** addition of 1 vol.%multiscale TiC particles improved the strength of the dual-phase steel but did not affect elongation of the *** and holes were primarily concentrated around the TiC particles rather than at the interface of martensite and *** main causes of crack sprouting were TiC particle interface cracking and TiC particle internal ***,the study demonstrated the potential of multiscale TiC particle-reinforced dual-phase steel as a strong and tough *** refined distribution of TiC particles in the matrix improved the strength of the material without compromising its *** results also highlighted the importance of careful selection of reinforcement particles to avoid detrimental effects on the fracture behavior of the material.

关键词： TiC particle Dual-phase structure TiC-reinforced dual-phase steel Tension Fracture behavior

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Application of interpolated double network model for carbon nanotube composites in electrothermal shape memory behaviors

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Acta Mechanica Sinica 2024年第8期40卷 133-153页

作者： Ting Fu zhao Yan Li Zhang Ran tao Yiqi Mao Department of Engineering Mechanics College of Mechanical and Vehicle EngineeringHunan UniversityChangsha410082China State Key Laboratory of Explosion Science and Technology Institute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081China

Multi-wall carbon nanotube filled shape memory polymer composite(MWCNT/SMC)possessed enhanced modulus,strength,and electric conductivity,as well as excellent electrothermal shape memory properties,showing wide design scenarios and engineering application *** thermoelectrically triggered shape memory process contains complex multi-physical mechanisms,especially when coupled with finite deformation rooted on micro-mechanisms.A multi-physical finite deformation model is necessary to get a deep understanding on the coupled electro-thermomechanical properties of electrothermal shape memory composites(ESMCs),beneficial to its design and wide *** into consideration of micro-physical mechanisms of the MWCNTs interacting with double-chain networks,a finite deformation theoretical model is developed in this work based on two superimposed network chains of physically crosslinked network formed among MWCNTs and the chemically crosslinked *** intact crosslinked chemical network is considered featuring with entropic-hyperelastic properties,superimposed with a physically crosslinked network where percolation theory is based on electric conductivity and electric-heating *** model is calibrated by experiments and used for shape recoveries triggered by heating and electric *** captures the coupled electro-thermomechanical behavior of ESMCs and provides design guidelines for MWCNTs filled shape memory polymers.

关键词： Shape memory polymer composite Viscoplastic constitutive relations Electro-thermomechanics Double network model Multiple shape memory

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Probing quantum causality with geometric asymmetry in spatial-temporal correlations

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Science China(Information Sciences) 2024年第9期67卷 294-305页

作者： Yu MENG Zheng-Hao LIU Zhikuan zhao Peng yin Yi-tao WANG Wei LIU Zhi-Peng LI Yuan-Ze YANG zhao-An WANG Jin-Shi XU Shang YU Jian-Shun TANG Chuan-Feng LI Guang-Can GUO CAS Key Laboratory of Quantum Information University of Science and Technology of China CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of China Department of Computer Science Eidgen?ssische Technische Hochschule Zürich Hefei National Laboratory Department of Physics Imperial College London Research Center for Quantum Sensing Zhejiang Lab

Causation promotes the understanding of correlation to an advanced stage by elucidating its underlying mechanism. Although statisticians have specified the possible causal relations among correlations,inferring causal structures is impossible from only the observed correlations in the classical world. Quantum correlations encapsulating the most defining aspects of quantum physics have taken a new turn for the causal inference problem — the two-point spatial and temporal quantum correlations with observationally discernible characteristics correspond exactly to the two most basic causal structures. However, a direct causal interpretation for quantum correlations has only been established in very limited cases. Here, we explore to what extent quantum correlations promote causal inference. Theoretically, we have found that the distinguishable causal regime of two-point Pauli correlations can be expanded from a single value to an asymmetric interval, and the causal structures determining the quantum correlations can be interpreted by a simple distance criterion. Experimentally, we have devised and implemented a versatile non-unital quantum channel in an optical architecture to directly observe such an asymmetric interval. The setup enabled quantum causal inference without any requirement of active intervention, which is impossible in the classical realm. Our work facilitates the identification of causal links among quantum variables and provides insight into characterizing causation and spatial-temporal correlation in quantum mechanics.

关键词： causality quantum information quantum channel channel-state duality non-unital channel

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Cardiac regeneration: Pre-existing cardiomyocyte as the hub of novel signaling pathway

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Genes & Diseases 2024年第2期11卷 747-759页

作者： tao Wang Xinzhe Chen Kai Wang Jie Ju Xue Yu Wanpeng Yu Cuiyun Liu yin Wang Institute for Translational Medicine The Affiliated Hospital of Qingdao UniversityCollege of MedicineQingdao UniversityQingdaoShandong 266023China College of Medicine Qingdao UniversityQingdaoShandong 266023China

In the mammalian heart,cardiomyocytes are forced to withdraw from the cell cycle shortly after birth,limiting the ability of the heart to regenerate and *** development of multimodal regulation of cardiac proliferation has verified that pre-existing cardiomyocyte proliferation is an essential driver of cardiac *** the continuous development of genetic lineage tracking technology,it has been revealed that cell cycle activity produces polyploid cardiomyocytes during the embryonic,juvenile,and adult stages of cardiogenesis,but newly formed mononucleated diploid cardiomyocytes also elevated sporadically during myocardial *** implied that adult cardiomyocytes have a weak regenerative capacity under the condition of ischemia injury,which offers hope for the clinical treatment of myocardial ***,the regeneration frequency and source of cardiomyocytes are still low,and the mechanism of regulating cardiomyocyte proliferation remains further *** is noteworthy to explore what force triggers endogenous cardiomyocyte proliferation and heart ***,we focused on summarizing the recent research progress of emerging endogenous key modulators and crosstalk with other signaling pathways and furnished valuable insights into the internal mechanism of heart *** addition,myocardial transcription factors,non-coding RNAs,cyclins,and cell cycle-dependent kinases are involved in the multimodal regulation of pre-existing cardiomyocyte ***,awakening the myocardial proliferation endogenous modulator and regeneration pathways may be the final battlefield for the regenerative therapy of cardiovascular diseases.

关键词： Cardiac regeneration Cell cycle re-enter Myocardial infarction Pre-existing cardiomyocyte proliferation Regenerative therapy of cardiovascular diseases

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Analysis and Verification of the Conserved MYB Binding Element in the DFR Promoter in Compositae

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Phyton-International Journal of Experimental Botany 2024年第2期93卷 343-353页

作者： Jialei Guo Fengzhen Li Guomin Shi Weimin zhao tao He State Key Laboratory of Plateau Ecology and Agriculture Qinghai UniversityXining810016China School of Ecol-Environmental Engineering Qinghai UniversityXining810016China Key Laboratory of Landscape Plants of Qinghai Province Qinghai UniversityXining810016China

Anthocyanins,ubiquitous in the Compositae family,are regulated by MYB(v-myb avian myeloblastosis viral oncogene homolog),playing an important role in anthocyanin *** this study,we analyzed the regulation pathway in which the MYB protein of subgroup 6 promotes dihydroflavonol reductase(DFR)expression in Compositae,and validated this law in Saussurea medusa through yeast one-hybrid *** results showed that MYB and DFR underwent purification selection,DFR promoter analysis revealed the presence of MYB binding site(GAGTTGAATGG)and bHLH binding site(CANNTG)at the sense strand of 84–116 nucleotide residues from the start *** two motifs were separated by 9–10 nucleotide residues,as existed in the DFR promoters of many Compositae ***,the yeast one-hybrid experiment demonstrated that SmMYB1 can activate the promoter of *** results provide a reference for further functional study of DFR in Compositae.

关键词： Compositae anthocyanin DFR gene MYB gene

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Analysis of light propagation characteristic in the aero-optic flow field of cone-headed vehicle with side window

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Optoelectronics Letters 2024年第1期20卷 58-64页

作者： XU Liang ZHOU Liye WANG Luyang zhao Shiwei WANG tao Tianjin Key Laboratory of Complex Control Theory and Application School of Electrical Engineering and AutomationTianjin University of TechnologyTianjin 300384China School of Intelligent Engineering Sun Yat-sen UniversityGuangzhou 510275China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519000China

Aero-optic imaging deviation research is carried out for infrared-guided vehicle with cone-head side window,with a focus on the propagation characteristics of light in an aero-optic flow *** the light entering the aero-optic flow field from the free-stream should be close to the normal,numerous data indicate that the light is refracted away from the *** paper divides the aero-optic flow field into two parts and uses the gas density distribution in the aero-optic flow field to propose the hypothesis that there are two modes of refraction when light propagates through the flow *** results show that light propagates from the optically denser medium to the optically thinner medium after passing through the shock wave and eventually leads to refraction away from the normal when the light enters the aero-optic flow field.

关键词： flow propagation light

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Elaborate Design of Two Novel Fluorescent Zinc-based Metal-Organic Frameworks for Highly Efficient Tetracycline Antibiotics Detection

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Chemical Research in Chinese Universities 2024年第3期40卷 499-507页

作者： tao He JI Chengshan ZHANG Jian yin Yuanyuan JIA Wenwen JIANG Xin XU Jie YANG Yulin MIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001P.R.China

The abuse of tetracycline antibiotics has caused great harm to human health and *** inexpensive,convenient and sensitive methods for the detection of tetracycline antibiotics is highly ***,based on the H_(4)ddp ligand[H_(4)ddp=3-(3,5-dicarboxyphenyl)pyridine-2,6-dicarboxylic acid],two novel zinc-based metal-organic frameworks(MOFs){[Zn_(3)(ddp)_(2)(H_(2)O)_(4)]·3H_(2)O}n(Zn1-ddp)and{[Zn_(3)(ddp)_(2)(H_(2)O)_(4)]·3H_(2)O}n(Zn2-ddp)were successfully designed by delicate structural *** Zn1-ddp and Zn2-ddp exhibited excellent water and chemical stability and showed excellent fluorescence quenching performance for tetracycline ***,the more advanced framework structure and better fluorescent performance make Zn1-ddp more sensitive than Zn2-ddp in fluorescent detection with a detection limit of 0.29µmol/L for tetracycline(TC),0.09µmol/L for doxycycline(DOX),0.10µmol/L for minocycline(MIN)and metacycline(MEL),0.19µmol/L for chlortetracycline(CTC),and 0.67µmol/L for oxytetracycline(OTC)among tetracycline *** fluorescence quenching mechanism of Zn1-ddp and Zn2-ddp for tetracycline antibiotics detection was deeply *** reasons for the superior detection performance of Zn1-ddp over Zn2-ddp were also analyzed in depth through Fourier transform infrared spectrophotometry(FTIR),X-ray photoelectron spectroscopy(XPS)analysis and framework structure *** developed method opens up a new perspective for antibiotics detection based on zinc-based MOFs.

关键词： Water system Metal-organic framework Fluorescent detection Tetracycline antibiotic

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