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High-temperature calcination dramatically promotes the activity of Cs/Co/Ce-Sn catalyst for soot oxidation

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Chinese Chemical Letters 2025年第1期36卷 534-538页

作者： Meng wang Yan Zhang yunbo yu Wenpo shan hong He Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control Ningbo Urban Environment Observation and Research StationInstitute of Urban EnvironmentChinese Academy of SciencesNingbo 315800China State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China

Catalytic oxidation of soot is of great importance for emission control on diesel *** this work,a highly active Cs/Co/Ce-Sn catalyst was investigated for soot oxidation,and it was unexpectedly found that high-temperature calcination greatly improved the activity of the *** the calcination temperature was increased from 500℃ to 750℃,T_(50) decreased from 456.9℃ to 389.8℃ in a NO/O_(2)/H_(2)O/N_(2) *** results revealed that high-temperature calcination can promote the ability to transfer negative charge density from Cs to other metal cations in Cs/Co/Ce-Sn,which will facilitate the production of more oxygen defects and the generation of more surface-active oxygen *** oxygen species are beneficial to the oxidation of NO to NO_(2),leading to the high yield of NO_(2) ***,the Cs/Co/Ce-Sn catalyst calcined at 750℃ demonstrated higher activity than that calcined at 500℃.This work provides a pathway to prepare high efficiency catalysts for the removal of soot and significant insight into the effects of calcination on soot oxidation catalysts.

关键词： Soot oxidation Calcination Surface defects Surface-active oxygen species NO_(2)

Interfacial behaviors between ZG13Cr9Mo1VNbN stainless steel and chromite sand

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Journal of Iron and Steel Research International 2025年第1期32卷 129-143页

作者： Shi-sen li Xi-min Zang Ji-lin Chen Jie Yang yu-an Jing Zhi-ying wang ling-zhong Kong School of Materials and Metallurgy University of Science and Technology LiaoningAnshan114051LiaoningChina School of Material Science and Engineering Shenyang University of TechnologyShenyang110870LiaoningChina Central Iron and Steel Research Institute Co. Ltd.Beijing100081China Xingtai Iron and Steel Co. Ltd.Xingtai054027HebeiChina

To elucidate the formation mechanisms of burn-on sand and metal penetration during sand casting,some laboratory experiments were carried out at different temperatures(1813,1833,1853,and 1873 K)and holding time(20,40,60,and 90 min)to simulate the interaction between ZG13Cr9Mo1VNbN stainless steel and chromite *** results demonstrate that the defects primarily consist of a mixture of the liquid phase,chromite,and *** main components of the liquid phase are SiO_(2),MnO,MgO,Cr_(2)O_(3),FeO,and Al_(2)O_(3),and the formation of Cr_(2)O_(3)through interfacial redox reactions has been *** presence of a liquid phase plays a pivotal role in influencing burn-on sand and metal *** reactions are prioritized,with burn-on sand maintaining a predominant *** the liquid phase quantity within the sand escalates,there is a corresponding incremental rise in the incidence of metal *** a minimal presence of the silicon element in steel can impact the liquid phase’s ***,the decomposition or dissolution of chromite sand is a significant factor in the development of burn-on sand and metal ***,a thorough investigation into the conditions and contributing factors of this phenomenon is essential for its effective management and mitigation.

关键词： Heat-resistant steel Chromite sand Interfacial reaction Burn-on sand Metal penetration Temperature Holding time

Boosting bidirectional sulfur conversion enabled by introducing boron-doped atoms and phosphorus vacancies in Ni_(2)P for lithium-sulfur batteries

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Journal of Energy Chemistry 2025年第1期100卷 760-769页

作者： lin Peng yu Bai Hang li Meixiu Qu Zhenhua wang Kening Sun Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Chemical Power Source and Green Catalysis School of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081China

lithium-sulfur (li-S) batteries have gained great attention due to the high theoretical energy density and low cost,yet their further commercialization has been obstructed by the notorious shuttle effect and sluggish redox ***,we supply a strategy to optimize the electron structure of Ni_(2)P by concurrently introducing B-doped atoms and P vacancies in Ni_(2)P (Vp-B-Ni_(2)P),thereby enhancing the bidirectional sulfur *** study indicates that the simultaneous introduction of B-doped atoms and P vacancies in Ni_(2)P causes the redistribution of electron around Ni atoms,bringing about the upward shift of d-band center of Ni atoms and effective d-p orbital hybridization between Ni atoms and sulfur species,thus strengthening the chemical anchoring for lithium polysulfides (liPSs) as well as expediting the bidirectional conversion kinetics of sulfur ***,theoretical calculations reveal that the incorporation of B-doped atoms and P vacancies in Ni_(2)P selectively promotes li2S dissolution and nucleation ***,the li-S batteries with Vp-B-Ni_(2)P-separators present outstanding rate ability of 777 m A h g^(-1)at 5 C and high areal capacity of 8.03 mA h cm^(-2)under E/S of 5μL mg^(-1)and sulfur loading of 7.20 mg cm^(-2).This work elucidates that introducing heteroatom and vacancy in metal phosphide collaboratively regulates the electron structure to accelerate bidirectional sulfur conversion.

关键词： B-doped atoms P vacancies Nickel phosphide Bidirectional sulfur conversion lithium-sulfur batteries

The secondary periodic elementβ_(p^(2)/p^(2)-1)and its applications

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Science China Mathematics 2025年第1期68卷 207-222页

作者： Jianguo hong Xiangjun wang yu Zhang Science College Shijiazhuang UniversityShijiazhuang 050035China School of Mathematical Sciences Nankai UniversityTianjin 300071China Center for Applied Mathematics Tianjin UniversityTianjin 300072China

Let p≥7 be a *** prove thatβ_(p^(2)/p^(2)-1)survives to E_(∞)in the Adams-Novikov spectral ***,using the Thom mapΦ:■,we can see that h0h3 also survives to E_(∞)in the classical Adams spectral *** an application ... 详细信息

关键词： stable homotopy groups of spheres Adams-Novikov spectral sequence in nite descent method

LncRNAs:expanding horizons in drug development and disease treatment Author links open overlay panel

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Science Bulletin 2025年第3期70卷 287-289页

作者： Zhizhuo wang Junfeng wang Wenfei Wu Chengyu Shi ying wang yu Chen Fangzhou liu shanshan Xie Aifu lin International School of Medicine International Institutes of MedicineThe 4th Affiliated Hospital of Zhejiang University School of MedicineYiwu 322000China MOE Laboratory of Biosystem Homeostasis and Protection College of Life SciencesZhejiang UniversityHangzhou 310058China Children’s Hospital Zhejiang University School of MedicineNational Clinical Research Center for Child HealthHangzhou 310052China Department of Cell Biology Zhejiang University School of MedicineHangzhou 310058China Cancer Center Zhejiang UniversityHangzhou 310058China Key Laboratory for Cell and Gene Engineering of Zhejiang Province Hangzhou 310058China Future Health Laboratory Innovation Center of Yangtze River DeltaZhejiang UniversityJiaxing 314100China Key Laboratory of Cancer Prevention and Intervention China National Ministry of EducationHangzhou 310009China Faculty of Health Sciences University of MacaoMacao 999078China

Extensive genome profiling studies have identified thousands of long non-coding RNAs(lncRNAs)associated with human *** are emerging elements through which the complex process of cancer development and progression can be ***,it is crucial to include an examination of lncRNAs when studying human cancer,especially when researching the clinical challenges of relapse and recurrence following targeted therapy[1].

关键词： horizon expanding treatment

Investigation of mixing performance and safety characteristics of polymer-based energetic materials simulant via screw-pressing blending extrusion charges

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Defence Technology(防务技术) 2025年第2期44卷 287-305页

作者： Gaoming lin Huzeng Zong Suwei wang Huang Chen Siyu yu Xiaojie Hao Kang wang yuanyuan li Guohui Zhang shanxi North Xing'an Chemical Industry Co.Ltd. Taiyuan 030008China National Special Superfine Powder Engineering Research Center of China School of Chemistry and Chemical EngineeringNanjing University of Science and TechnologyNanjing 210094China Institute of shandong Non-metallic Material Jinan 250031China

The present study introduces a screw-pressing charging method to tackle deficiencies in automation and charge uniformity during the melt-casting of polymer-based energetic *** ensure the safety of the experiments,this study used inert materials with similar physical properties to partially substitute for the actual energetic components in the preparation of simulant *** thoroughly analyzing slurry physical properties,a simulation framework and an extensive performance evaluation method were *** tools guide the design of the structure and configuration of process *** demonstrate that employing the Pin element significantly enhances radial mixing within the screw,minimizes temperature variations in the slurry,and improves both efficiency and safety in the mixing ***,adjustments such as widening the cone angle of the barrel,modifying the solid content of the slurry,and varying the speed of the screw can optimize the mechanical and thermal coupling in the flow *** adjustments promote higher-quality slurry and create a safer production environment for the extrusion process.

关键词： Polymer-based energetic materials Screw-pressing charging process Structural design Process safety Mixing performance

Insulin autoantibodies,D-dimer and microalbuminuria:A crosssectional,case-control study of type 2 diabetes

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World Journal of Diabetes 2025年第2期16卷 38-46页

作者： lin-shan Zhang Peng yu Fei Yao Zhi-Qiang Lu Xiao-Mu li hong Chen Department of Endocrinology Zhongshan HospitalFudan UniversityShanghai 200032China Department of Endocrinology Shanghai Geriatric Medical CenterShanghai 201104China Department of Endocrinology Fuzhou Hospital of Traditional Chinese MedicineFuzhou 350000Fujian ProvinceChina

BACKGROUND Type 2 diabetes mellitus(T2DM)often leads to vascular complications,such as *** role of insulin autoantibodies(IAA)and their interaction with D-dimer in this context remains *** To investigate the characteristics of IAA and its effect on albuminuria in T2DM *** We retrospectively analyzed clinical data from 115 T2DM patients with positive IAA induced by exogenous insulin,and 115 age-and sex-matched IAA-negative T2DM patients as *** scores were calculated using multivariate logistic *** variables were selected using the least absolute shrinkage and selection operator(LASSO)*** constructed a prediction model and analyzed the association between IAA and albuminuria based on demographic and laboratory *** The IAA-positive group had significantly higher D-dimer levels[0.30(0.19-0.55)mg/L vs 0.21(0.19-0.33)mg/L,P=0.008]and plasma insulin levels[39.1(12.0-102.7)μU/mL vs 9.8(5.5-17.6)μU/mL,Plin dose per weight ratio,diabetes duration,and urinary albumin-to-creatinine ratio(UACR)were observed but did not reach statistical *** LASSO model identified plasma insulin and D-dimer as key factors with larger coefficients.D-dimer was significantly associated with UACR in the total and IAA-positive groups but not in the IAA-negative *** odds ratio for D-dimer elevation(>0.5 g/L)was 2.88(95%confidence interval:1.17-7.07)in the IAA-positive group(P interaction<0.05).CONCLUSION D-dimer elevation is an independent risk factor for abnormal albuminuria and interacts with IAA in the development of abnormal albuminuria in T2DM patients.

关键词： Insulin autoantibody Microalbuminuria D-dimer Type 2 diabetes

Mainchain conformation ordering self-assembly tailored room temperature phosphorescence emission

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Science China Chemistry 2025年第1期68卷 329-336页

作者： yuzhu li yumeng Gao Feng Tian yu wang yuan Yao Shaoliang lin Xiang Ma Binbin Xu shanghai Key Laboratory of Advanced Polymeric Materials Key Laboratory for Ultrafine Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and TechnologyShanghai 200237China Key Laboratory for Advance Materials and Feringa Noble Prize Scientist Joint Research Centre Frontiers Science for Materiobiology and Dynamic ChemistrySchool of Chemistry and Molecular EngineeringEast China University of Science&TechnologyShanghai 200237China shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China

Developing organic room-temperature phosphorescence(RTP)materials with a wide range of tunable-emission is significant in expanding the applications of RTP ***,we rationally designed amphiphilic alternating copolymers poly(1,2-bis(4-alkoxyphenyl)ethane-1,2-dione-alt-(ethylene glycol)x)(P(Bz-alt-EGx))that combined the advantage of alternating benzil and EGxskeleton,and tunable mainchain *** a mainchain conformation ordering assembly(COA)process,P(Bz-alt-EGx)self-assembled into well-defined platelets,and such assemblies emitted blue RTP at ca.425 nm due to the ordered folded-chain conformation and confined *** contrast,traditional self-assembly(TA)of P(Bz-alt-EGx)obtained less ordered aggregates,such as asymmetric worms,vesicles,and rod-like *** resultant less ordered aggregates exhibited yellow-green RTP at ca.550 *** wide-tuning RTP emission in solution(between blue and yellow-green,over125 nm)is realized using the P(Bz-alt-EG_(x))alternating copolymers under the treatment of different self-assembly *** study uncovers a new strategy to tailor the RTP emission through different self-assembly pathways and holds great promise for the fabrication of advanced optical materials.

关键词： self-assembly conformation ordering alternating copolymer phosphorescence emission

Targeting vulnerable microcircuits in the ventral hippocampus of male transgenic mice to rescue Alzheimer‑like social memory loss

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Military Medical Research 2025年第1期12卷 48-71页

作者： Hui-Yang Lei Gui-lin Pi Ting He Rui Xiong Jing-Ru Lv Jia-Le liu Dong-Qin Wu Meng-Zhu li Kun Shi Shi-hong li Na-Na yu Yang Gao Hui-ling yu lin-yu Wei Xin wang Qiu-Zhi Zhou Pei-lin Zou Jia-Yang Zhou ying-Zhou liu Nai-Ting Shen Jie Yang Dan Ke Qun wang Gong-Ping liu Xi-Fei Yang Jian-Zhi wang ying Yang Department of Pathophysiology School of Basic MedicineKey Laboratory of Education Ministry of China/Hubei Province for Neurological DisordersTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Department of Traditional Chinese Medicine the Central Hospital of WuhanTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430014China Key Laboratory of Modern Toxicology of Shenzhen Shenzhen Center for Disease Control and PreventionShenzhen 518055GuangdongChina Co‑Innovation Center of Neuroregeneration Nantong UniversityNantong 226000JiangsuChina

Background:Episodic memory loss is a prominent clinical manifestation of Alzheimer’s disease(AD),which is closely related to tau pathology and hippocampal *** to the heterogeneity of brain neurons,the specific roles of different brain neurons in terms of their sensitivity to tau accumulation and their contribution to AD-like social memory loss remain ***,further investigation is ***:We investigated the effects of AD-like tau pathology by Tandem mass tag proteomic and phosphoproteomic analysis,social behavioural tests,hippocampal electrophysiology,immunofluorescence staining and in vivo optical fibre recording of GCaMP6f and ***,we utilized optogenetics and administered ursolic acid(UA)via oral gavage to examine the effects of these agents on social memory in ***:The results of proteomic and phosphoproteomic analyses revealed the characteristics of ventral hippocampal CA1(vCA1)under both physiological conditions and AD-like tau *** tau progressively accumulated,vCA1,especially its excitatory and parvalbumin(PV)neurons,were fully filled with mislocated and phosphorylated tau(p-Tau).This finding was not observed for dorsal hippocampal CA1(dCA1).The overexpression of human tau(hTau)in excitatory and PV neurons mimicked AD-like tau accumulation,significantly inhibited neuronal excitability and suppressed distinct discrimination-associated firings of these neurons within *** excitatory and PV neurons in vCA1 at specific rhythms and time windows efficiently ameliorated tau-impaired social ***,1 month of UA administration efficiently decreased tau accumulation via autophagy in a transcription factor EB(TFEB)-dependent manner and restored the vCA1 microcircuit to ameliorate tau-impaired social ***:This study elucidated distinct protein and phosphoprotein networks between dCA1 and vCA1 and highlighted the susceptibility of the vCA1 microcircuit to AD-like tau

关键词： Alzheimer’s disease Tau protein Ventral hippocampus Social memory Ursolic acid Transcription factor EB(TFEB)