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A direct polymeric carbon nitride/tungsten oxide Z-scheme heterostructure for efficient photocatalytic hydrogen generation via reforming of plastics into value-added chemicals

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Rare Metals 2024年第8期43卷 3771-3783页

作者： Rui-Zhe Wang Zhi Lin Yi-Qing Wang kai-ni zhang Ge-Hong zhang Jie zhang Samuel SMao Shao-Hua Shen International Research Center for Renewable Energy State Key Laboratory of Multiphase Flow in Power EngineeringXi'an Jiaotong UniversityXi'an 710049China School of Civil and Architecture Engineering Xi'an Technological UniversityXi'an 710021China Department of Mechanical Engineering University of California at BerkeleyBerkeleyCA94720USA

To promote charge transfer and separation for efficient photocatalysis,a direct Z-scheme heterostructure was constructed by coupling polymeric carbon nitride(PCN) and WO_(3).Interestingly,the obtained PCN/WO_(3)Z-scheme heterostructure could photocataly tic ally produce hydrogen and value-added chemicals(e.g.,formate and acetate) by reforming of plastic polylactic acid(PLA) in alkaline aqueous *** optimizing WO_(3) contents and reaction conditions,the obtained PCN/WO_(3)heterostructure exhibits much increased photocatalytic activity for PLA photoreforming under visible light,with hydrogen evolution rate reaching 402.90 μmol·g~(-1)·h~(-1),which is 3.5 times that of *** is revealed that the Z-scheme charge transfer between PCN and WO_(3) mainly contributes to the promoted charge separation and thus the improved photocatalytic ***,with h+and·OH experimentally evidenced as the predominant active species,a possible reaction pathway for the reforming of PLA into value-added chemicals(e.g.,formate and acetate)over PCN/WO_(3) Z-scheme heterostructure is cleared by monitoring the reaction intermediates and *** work paves a carbon neutrality and scalable route toward the synergistical production of hydrogen and value-added chemicals by utilizing and recycling plastic waste.

关键词： Carbon nitride Z-scheme heterojunction Plastic waste conversion Photocatalytic H_(2)production Value-added chemicals

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Evolution hydrothermal aging resistance mechanism study of zirconium and manganese doped CeO_(2)catalysts in soot catalytic combustion based on low Miller indices crystal surface effect

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Journal of Rare Earths 2024年第7期42卷 1272-1281,I0003页

作者： Zonglin Li Pan Wang Hong ni Chengcheng Ao Lidong zhang Hefeng zhang kai Li School of Automotive and Traffic Engineering Jiangsu UniversityZhenjiang212013China State Environmental Protection Key Laboratory of Vehicle Emission Control and Simulation Chinese Research Academy of Environmental ScienceBeijing100012China National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei230026China

The thermogravimetric analysis(TGA)experiments were carried out to reveal the mechanism of Zr and Mn doping on catalytic activity of CeO_(2)catalyst both fresh and after hydrothermal aging,and the lattice morphology and valence changes were characterized by means of Brunauer-Emmett-Teller(BET)method,X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),and H_(2)-temperature programmed reduction(H_(2)-TPR).Density functional theory(DFT)and molecular thermodynamics calculations were applied to investigate the change in catalytic activity,crystal surface energy and crystal morphology caused by hydrothermal *** maximum reaction rate temperature of fresh Mn/CeO_(2)(389℃)is similar to that of CeO_(2)(371℃)and lower than that of Zr/CeO_(2)(447℃),but the catalytic performance of CeO_(2)decreases more severely after hydrothermal *** catalyst crystals show different degrees of crystal surface migration after hydrothermal aging,which leads to the reduction of Ce^(3+)/Ce^(4+) ratio and the active sites *** calculations indicate that the doping of Zr and Mn reduces the surface energy of the low Miller indices surface and increases the oxygen vacancy formation energy,leading to better thermal stability and lower catalytic *** Zr and Mn doping also changes the adsorption energy and Gibbs free energy of H_(2)O,which dominates the migration of(111)to(110)and(100)in the vapor *** crystal surface migration mechanism of CeO_(2)catalysts doped with Zr and Mn induced by H_(2)O molecules at high temperature obtained in this study can provide a valuable addition to the regeneration of CeO_(2)catalysts in the after-treatment systems of diesel engines.

关键词： Soot CeO_(2)-based catalyst CDPF Rare earth metal oxides DFT calculations

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Reconstruct recent multi-population migration history by using identical-by-descent sharing

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Journal of Genetics and Genomics 2024年第6期51卷 642-651页

作者： Wenxiao zhang kai Yuan Ru Wen Haifang Li Xumin ni School of Mathematics and Statistics Beijing Jiaotong UniversityBeijing 100044China The Stanley Center for Psychiatric Research Broad Institute of MIT and HarvardCambridgeMA 02142USA Baidu Incorporated Beijing 100085China

Identical-by-descent(IBD)is a fundamental genomic characteristic in population genetics and has been widely used for population history ***,limited by the nature of IBD,which could only capture the relationship between two individuals/haplotypes,existing IBD-based history inference is constrained to two *** this study,we propose a framework by leveraging IBD sharing in multipopulation and develop a method,MatrixiBD,to reconstruct recent multi-population migration ***,we employ the structured coalescent theory to precisely model the genealogical process and then estimate the IBD sharing across multiple *** our model,we establish a theoretical connection between migration history and IBD *** method is rigorously evaluated through simulations,revealing its remarkable accuracy and ***,we apply MatrixiBD to Central and South Asia in the Human Genome Diversity Project and successfully reconstruct the recent migration history of three closely related populations in South *** taking into account the IBD sharing across multiple populations simultaneously,MatrixlBD enables us to attain clearer and more comprehensive insights into the history of regions characterized by complex migration dynamics,providing a holistic perspective on intricate patterns embedded within the recent population migration history.

关键词： Population genetics IBD sharing Migration history Structured coalescent theory Gene flow

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PCK1 attenuates tumor stemness via activating the Hippo signaling pathway in hepatocellular carcinoma

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Genes & Diseases 2024年第4期11卷 340-352页

作者： Rui Liu Yi Liu Wenlu zhang Guiji zhang Zhirong zhang Luyi Huang ni Tang kai Wang Key Laboratory of Molecular Biology for Infectious Diseases(Ministry of Education) Institute for Viral HepatitisDepartment of Infectious DiseasesThe Second Affiliated HospitalChongqing Medical UniversityChongqing 400016China Department of Clinical Laboratory Sichuan Clinical Research Center for CancerSichuan Cancer Hospital&InstituteSichuan Cancer CenterAffiliated Cancer Hospital of University of Electronic Science and Technology of ChinaChengduSichuan 610041China

Liver cancer stem cells were found to rely on glycolysis as the preferred metabolic *** carboxylase 1(PCK1),a gluconeogenic metabolic enzyme,is down-regulated in hepatocellular carcinoma and is closely related to poor *** onco-genesis and progression of tumors are closely related to cancer stem *** is not completely clear whether the PCK1 deficiency increases the stemness of hepatoma cells and promotes the oncogenesis of hepatocellular ***,the results showed that PCK1 inhibited the self-renewal property of hepatoma cells,reduced the mRNA level of cancer stem cell markers,and inhibited ***,PCK1 increased the sensitivity of hepatocellular carci-noma cells to ***,we found that PCK1 activated the Hippo pathway by enhancing the phosphorylation of YAP and inhibiting its nuclear *** reduced the stemness of hepatoma cells and promoted the pro-apoptotic effect of ***,combined treatment with verteporfin and sorafenib may be a potential anti-tumor strat-egy in hepatocellular carcinoma.

关键词： Cancer stem cells Chemoresistance Gluconeogenesis Hepatocellular carcinoma YAP

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Inhibiting HMGCR represses stemness and metastasis of hepatocellular carcinoma via Hedgehog signaling

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Genes & Diseases 2024年第5期11卷 470-483页

作者： Zhirong zhang Jiayao Yang Rui Liu Jing Ma kai Wang Xiaojun Wang ni Tang Key Laboratory of Molecular Biology for Infectious Diseases(Ministry of Education) Institute for Viral HepatitisDepartment of Infectious DiseasesThe Second Affiliated HospitalChongqing Medical UniversityChongqing 400016China Institute of Hepatobiliary Surgery Southwest HospitalThird Military Medical University(Army Medical University)Chongqing 400038China

Cancer stem cells(CSCs)play a crucial role in tumor initiation,recurrence,metastasis,and drug ***,the current understanding of CSCs in hepatocellular carcinoma(HCC)remains *** a comprehensive analysis of the database,it has been observed that 3-hydroxy-3-methylglutaryl-coenzyme A reductase(HMGCR),a critical enzyme involved in cholesterol synthesis,is up-regulated in HCC tissues and liver ***,high expression of HMGCR is associated with a poor prognosis in patients with ***,HMGCR promotes the stemness and metastasis of HCC both in vitro and in *** screening various signaling pathway inhibitors,we have determined that HMGCR regulates stemness and metastasis by activating the Hedgehog signaling in ***,HMGCR positively correlates with the expression of the Smoothened receptor and facilitates the nuclear translocation of the transcriptional activator GLI family zinc finger *** of the Hedgehog pathway can reverse the stimulatory effects of HMGCR on stemness and metastasis in ***,simvastatin,an FDA-approved cholesterol-lowering drug,has been shown to inhibit stemness and metastasis of HCC by targeting *** together,our findings suggest that HMGCR promotes the regeneration and metastasis of HCC through the activation of Hedgehog signaling,and simvastatin holds the potential for clinical suppression of HCC metastasis.

关键词： Cancer stem cells Hedgehog Hepatocellular carcinoma Metastasis Statin

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Lanthanide-based microlasers:Synthesis,structures,and biomedical applications

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Nano Research 2024年第1期17卷 97-111页

作者： Qian zhang Yawei Liu kai Liu Hongjie zhang Engineering Research Center of Advanced Rare Earth Materials(Ministry of Education) Department of ChemistryTsinghua UniversityBeijing 100084China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Xiangfu Laboratory Jiaxing 314102China

The large size of lasers limits their applications in confined spaces,such as in biosensing and in vivo brain tissue *** this regard,micron-sized lasers have been *** exhibit great potential for biological detecting,remote sensing,and depth tracking due to their small sizes,sensitive properties of their spectral fingerprints,and flexible positional modulation in the ***-based luminescent materials that possess long excited-state lifetime,narrow emission bandwidth,and upconversion behaviors are promising as gain mediums for novel *** addition,lanthanide-based microlasers could be generated under natural ambient conditions with pumped or continuous light sources,which significantly promotes the practical applications of *** progress in the design,synthesis,and biomedical applications of lanthanide-based microlasers has been outlined in this *** ions doped and upconverted lanthanide-based microlasers are highlighted,which exhibit advantageous structures,miniaturized dimensions,and high lasing *** applications of lanthanide-based microlasers are further discussed,the upconverted microlasers show great advantages for biological applications owing to their tunable excitation and emission characteristics and excellent environmental ***,perspectives and challenges in the field of lanthanide-based microlasers are presented.

关键词： microlasers lanthanide-based luminescent materials upconversion nanoparticles biological applications

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Structural analysis of conformational changes in the mpox virus A7 protein

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Virologica Sinica 2024年第2期39卷 331-334页

作者： Xincheng ni kai Wang Yinze Han Jian Lei National Clinical Research Center for Geriatrics and State Key Laboratory of Biotherapy and Cancer CenterWest China HospitalSichuan UniversityChengdu610041China

Dear Editor,The mpox(formerly known as monkeypox)disease caused by the mpox virus(MPXV)has infected more than 89,700 people and is linked to 157 deaths in 114 countries worldwide as of September 2023(***).Mpox is a zoonotic disease,the first human case of which was reported in 1970(Breman et al.,1980).Common symptoms in mpox-infected individuals include fever,myalgia,fatigue,headache,and a characteristic rash(Isidro et al.,2022).Current treatments for mpox remain limited,and an in-depth investigation of essential viral protein(s)will help to explore novel drug targets.

关键词： infected headache

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Chinese Journal of Electronics 2024年第3期33卷 672-682页

作者： Yi zhang kai zhang Ting CUI PLA SSF Information Engineering University

Related-key model is a favourable approach to improve attacks on block ciphers with a simple key ***,to the best of our knowledge,there are a few results in which zero-correlation linear attacks take advantage of the related-key *** ascribe this phenomenon to the lack of consideration of the key input in zerocorrelation linear *** on the linear key schedule of a block cipher,we generalize the zero-correlation linear attack by using a related-key ***,we propose the creation of generalized linear hulls(GLHs)when the key input is involved;moreover,we indicate the links between GLHs and conventional linear hulls(CLHs).Then,we prove that the existence of zero-correlation GLHs is completely determined by the corresponding CLHs and the linear key *** addition,we introduce a method to construct zero-correlation GLHs by CLHs and transform them into an integral *** correctness is verified by applying it to SIMON16/16,a SIMON-like toy *** on our method,we find 12/13/14/15/15/17/20/22-round related-key zero-correlation linear distinguishers of SIMON32/64,SIMON48/72,SIMON48/96,SIMON64/96,SIMON64/128,SIMON96/144,SIMON128/192 and SIMON 128/256,*** far as we know,these distinguishers are one,two,or three rounds longer than current best zero-correlation linear distinguishers of SIMON.

关键词： Schedules Ciphers Analytical models Toy manufacturing industry Force Linear approximation Transforms

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Transjugular intrahepatic portosystemic shunt:A promising therapy for recompensation in cirrhotic patients

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World Journal of Gastroenterology 2024年第16期30卷 2285-2286页

作者： Ya-ni Jin Wei zhang Department of Gastroenterology Nanjing Drum Tower HospitalAffiliated Hospital of Medical SchoolNanjing UniversityNanjing 210000Jiangsu ProvinceChina

This is a retrospective study focused on recompensation after transjugular intrahepatic portosystemic shunt(TIPS)*** authors confirmed TIPS could be a treatment for recompensation of patients with cirrhosis according to Baveno *** paper identified age and post-TIPS portal pressure gradient as independent predictors of recompensation in patients with decompensated cirrhosis after *** results need to be validated in a larger prospective cohort.

关键词： Cirrhosis recompensation Transjugular intrahepatic portosystemic shunt Portal pressure gradient Predictor factor Baveno VII

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Prescribed-time leader-following consensus of linear multi-agent systems by bounded linear time-varying protocols

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Science China(Information Sciences) 2024年第1期67卷 140-153页

作者： kai zhang Bin ZHOU Xuefei YANG Guangren DUAN Center for Control Theory and Guidance Technology Harbin Institute of Technology

This paper considers the prescribed-time leader-following consensus problem of input-constrained linear multi-agent systems under generally directed communication topology in two cases:the Laplacian matrix related to the entire communication topology between agents is either known or *** particular,the consensus problem for the former case is solved by a novel bounded linear time-varying(LTV) protocol,where the feedback gain is formulated by the parametric Lyapunov equation and the knowledge of the Laplacian ***,by utilizing a distributed observer,a fully bounded LTV protocol is proposed for the latter *** should be noted that,compared with the existing results,the system under consideration is more general,the designed protocols are linear,and the consensus problem is accomplished even in a fully distributed ***,the effectiveness of the proposed approach is verified by a numerical example.

关键词： leader-following consensus time-vary feedback prescribed-time control fully distributed consensus

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