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Mesh-supported V2O5-WO3/TiO2 nanosheet array catalysts for efficient removal of NOx

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Tungsten 2025年第1期7卷 100-111页

作者： zhi-qi Zhang liu Yang Wen Luo Vladimir An Jing li Bao-Dan liu School of Materials Science and Engineering Northeastern University Foshan Graduate School of Innovation Northeastern University Kizhner Research Center School of Advanced Manufacturing Technologies Tomsk Polytechnic University

The design and synthesis of vanadium-based denitration catalysts with low-temperature activity pose significant challenges in the field of toxic gas *** this study,we have developed a novel approach to fabricate highly efficient V2O5-WO3/TiO2monolithic mesh catalysts for NOxreduction at low ***,TiO2nanosheets with strong adhesion and large surface area were grown on Ti mesh using plasma electrolytic oxidation technology and hydrothermal ***,super-small traces of WO3and V2O5active nano-species were subsequently deposited on TiO2nanosheets using the deposition-precipitation *** to traditional ceramic-based V2O5-WO3/TiO2catalysts,our V2O5-WO3/TiO2monolithic mesh catalyst exhibits superior mechanical performance,excellent thermal conductivity,lower pressure drop,higher utilization of active components,and stronger synergistic ***,the V2O5-WO3/TiO2monolithic mesh catalysts exhibited excellent low-temperature catalytic activity with 98% of NOxconversion at 220℃,and remarkable long-term SO2tolerance and water resistance in the selective catalytic reduction（SCR） of NOxwith *** SCR reaction of tiny V2O5and WO3active species supported on TiO2nanosheets directly demonstrated to follow the Eley-Rideal mechanism by in situ infrared spectra.

关键词： Low temperature activity Monolithic mesh catalysts NH3-SCR SO2 tolerance V2O5-WO3/TiO2

Sodium ferulate prevents amyloid-beta-induced neurotoxicity through suppression of p38 MAPK and upregulation of ERK-1/2 and Akt/protein kinase B in rat hippocampus

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Acta Pharmacologica Sinica 2005年第8期26卷 943-951页

作者： Ying JIN~2, En-zhi YAN~3, Ying FAN~3, zhi-hong ZONG~4, zhi-min qi~3, zhi li~(2,5) ~2Department of Ethnopharmacology, China Medical University, Shengyang 110001, China ~3Department of Pharmacology, Jinzhou Medical College, Jinzhou 121001, China ~4Department of Biochemistry, China Medical University Shengyang 110001, China Department of Ethnopharmacology China Medical University Shengyang China Department of Pharmacology Jinzhou Medical College Jinzhou China Department of Biochemistry China Medical University Shengyang China

Aim: To observe whether an amyloid β （Aβ）-induced increase in interleukin （IL）-1β was accompanied by an increase in the p38 mitogen-activated protein kinase （MAPK） pathway and a decrease in the cell survival pathway, and whether so-dium ferulate （SF） treatment was effective in preventing these Aβ-induced changes. Methods: Rats were injected intracerebroventricularly with Aβ25-35. Seven days after injection, immunohistochemical techniques for glial fibrillary acidic protein （GFAP） were used to determine the astrocyte infiltration and activation in hippo-campal CA1 areas. The expression of IL-1β, extracellular signal-regulated kinase （ERK）, p38 MAPK, Akt/protein kinase B （PKB）, Fas ligand and caspase-3 were determined by Western blotting. The caspase-3 activity was measured by clea-vage of the caspase-3 substrate （Ac-DEVD-pNA）. Reverse transcription-polymerase chain reaction was used to analyze the changes in IL- 1βmRNA levels. Results:Intracerebroventricular injection of Aβ-（25-35） elicited astrocyte activation and infiltration and caused a strong inflammatory reaction characterized by increased IL-1β production and elevated levels of IL-1β mRNA. Increased IL-1β synthesis was accompanied by increased activation of p38 MAPK and downregulation of phospho-ERK and phospho-Akt/PKB in hippocampal CA regions prepared from Aβ-treated rats, leading to cell death as assessed by activa-tion of caspase-3. SF significantly prevented Aβ-induced increases in IL-Iβ and p38 MAPK activation and also Aβ-induced changes in phospho-ERK and phospho-Akt/PKB expression levels. Conclusion: SF prevents Aβ-induced neu-rotoxicity through suppression of p38 MAPK activation and upregulation of phospho-ERK and phospho-Akt/PKB expression.

关键词： ferulic acid amyloid interleukin-1 p38 mitogen-activated protein kinases extra-cellular signal-regulated kinases proto-oncogene proteins c-akt Alzheimer disease

Association between inflammatory mediators and angiographic morphologic features indicating thrombus formation in patients with acute myocardial infarction

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Chinese Medical Journal 2009年第15期122卷 1738-1742页

作者： li Dong-bao HUA qi liU zhi li Jing XU li-qing WANG Shan JIN Wei-ying Department of Cardiology Xuanwu Hospital of Capital Medical University Beijing 100053 China

Background Inflammatory mechanisms had played an important role in the occurrence and prognosis of acute myocardial infarction, inflammatory mediators was associated with adverse outcomes of acute myocardial infarction. This study tested the hypothesis that in the acute phase of myocardial infarction with ST-segment elevation, neutrophil count and high-sensitivity C-reactive protein are predictive of angiographic morphologic features that indicate thrombus formation in the infarct-related artery. Methods This retrospective study included 182 consecutive patients with acute myocardial infarction and ST-segment elevation. Patients were assigned to a thrombus-formation group （n=77） and a non-thrombus-formation group （n=-106）. All patients had a Killip＇s classification 〈3 and onset 〈12 hours prior to presentation. All the cases were going to undergo coronary angiography, including primary percutaneous coronary intervention, simple coronary angiography, or thrombolysis in a coronary artery （or arteries） or coronary artery bypass graft（s）. Blood samples for measurement of high-sensitivity C-reactive protein and for routine blood laboratory studies were collected prior to coronary angiography. Results The levels of high-sensitivity C-reactive protein, total leukocyte counts, neutrophil counts, and neutrophil/ lymphocyte ratios were substantially higher in the thrombus-formation group than in the non-thrombus-formation group patients （for each, P 〈0.05）. Stepwise Logistic regression analyses identified high-sensitivity C-reactive protein, neutrophil count, and neutrophil/lymphocyte ratio as independent predictors of thrombus formation in the infarct-related artery （for each, P 〈0.05）. Conclusions In patients with acute myocardial infarction levels of high-sensitivity C-reactive protein are predictors to higher neutrophil counts, neutrophil/lymphocyte ratio, and ndicate thrombus formation

关键词： acute myocardial infarction thrombosis neutrophil percutaneous coronary intervention C-reactive protein

Tb￣(3+) as Fluorescent Probe in the Study of the Interaction of Other Lanthanide Ions with Trichosanthin

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Chemical Research in Chinese Universities 1995年第4期11卷 279-283页

作者： HAO qiang li Wen-lian ZHANG Yan YU Gui YANGHong ZHAO Xu YAO qi-zhi and li qing-shan(Department of Molecular Biofogy and National Laboratory of enzyme engineering,Jiln University,Changchun, 130023)(Changchun Institute of Physics, Academia Sinica, Cha JIliN UNIV DEPT MOLEC BIOLCHANGCHUN 130023PEOPLES R CHINA JIliN UNIV NATL LAB ENZYME ENGNCHANGCHUN 130023PEOPLES R CHINA ACAD SINICA CHANGCHUN INST PHYSCHANGCHUN 130023PEOPLES R CHINA ACAD SINICA GRAD SCHBEIJING 100039PEOPLES R CHINA

he interaction of lanthanide (Ln￣(3+))ions with trchosanthin(TCS)was investi-gated using Tb￣(3+) as fluorescent probe. The metal-binding sites of the protein were probed by means of adding the Tb￣(3+) into the protein solutions. If other Ln￣(3+) ions exist in the Tb￣(3+) protein complex system, they would compete against Tb￣(3+) in the binding sites of the protein, and so the fluorescence intensity of Tb￣(3+) decreased,which is called quenching *** quencliing effect is related to the ionic radii of the Ln￣(3+) ions and energy transfer from Tb￣(3+) protein to Ln￣(3+) ions. Based on the ex- perimental results,a schematic of the energy transfer from protein-Tb￣(3+) complex to protein-Ln￣(3+) complex is suggested.

关键词： Trichosanthin Energy transfer Protein-Ln￣(3+) complex

Recent Progress and Development in Extrusion of Rare Earth Free Mg Alloys: A Review

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Acta Metallurgica Sinica(English Letters) 2019年第2期32卷 145-168页

作者： Shuai-Ju Meng Hui Yu Shao-Da Fan qi-zhi li Sung Hyuk Park Joung Sik Suh Young Min Kim Xiao-Long Nan Ming-Zhe Bian Fu-Xing Yin Wei-Min Zhao Bong Sun You Kwang Seon Shin School of Materials Science and Engineering Hebei University of Technology School of Materials Science and Engineering Kyungpook National University Materials Implementation Department Korea Institute of Materials Science National Key Laboratory of Shock Wave and Detonation Physics Institute of Fluid Physics China Academy of Engineering Physics School of Materials Science and Engineering Anhui University of Technology Magnesium Technology Innovation Center School of Materials Science and Engineering Seoul National University

Mg and its alloys are the lightest structural metals available and are extremely attractive for applications as lightweight components, particularly in the automobile, electronic, and aerospace industries. The global market for wrought Mg alloys has steadily expanded over the past decade. And numerous studies have been carried out to meet this increasing demand of high-performance Mg alloys. However, Mg extrusion alloys have had a very limited usage so far. To overcome existing industrial challenges, one desirable approach is the development of low-cost rare earth(RE) free Mg extrusion alloys with superior mechanical properties. This review will introduce the recent research highlights in the extrusion of Mg alloys, specifi cally focusing on low-cost RE-free Mg alloy. The results from both the literature and our previous study are summarized and critically reviewed. Several aspects of RE-free Mg extrusion alloys are described in detail:(1) novel alloying designs including Mg–Al-, Mg–Zn-, Mg–Ca-, Mg–Sn-, and Mg–Bi-based alloys,(2) advanced extrusion techniques, and(3) extrusion-related severe plastic deformation(SPD) processing. Accordingly, considering the large gap in mechanical properties between the current RE-free Mg alloys and high-performance aluminum alloys, new alloy design, processing route control, and recommendations for future research on RE-free Mg extrusion alloys are also proposed. We hope this review will not only off er insightful information regarding the extrusion of RE-free Mg alloys but also inspire the development of new Mg extrusion technologies.

关键词： Mg alloy Extrusion Rare earth free Novel processing Mechanical properties

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动态载荷识别的自适应延迟逆模型方法

船舶力学 2017年第5期21卷 576-583页

作者：周盼蔡龙奇率志君李玩幽哈尔滨工程大学动力与能源工程学院哈尔滨150001 中国核动力研究设计院四川双流610213

为减小载荷识别问题对原系统先验知识的依赖,采用系统的自适应延迟逆模型识别时域载荷。采用自适应算法辨识延迟逆模型,代替了一般识别方法中的系统特性矩阵求逆过程,避免了病态问题。随后将工作状态下的响应作为逆模型的输入,则其输出... 详细信息

为减小载荷识别问题对原系统先验知识的依赖,采用系统的自适应延迟逆模型识别时域载荷。采用自适应算法辨识延迟逆模型,代替了一般识别方法中的系统特性矩阵求逆过程,避免了病态问题。随后将工作状态下的响应作为逆模型的输入,则其输出就是时域载荷的延迟估计。通过对两端简支梁结构进行载荷识别的仿真研究,以及对双层隔振试验台架的试验研究,识别了稳态激励和瞬态激励,验证了该方法的有效性。该方法不需要了解系统的数学模型及参数,因此能够应用于工程实践中。

关键词：振动时域载荷识别自适应延迟逆模型时间延迟

CO2-mediated bicarbonate conversion to concentrated formate in a CEM-based electrolyzer

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Journal of Energy Chemistry 2025年第1期100卷 605-611页

作者： Haocheng Xiong Donghuan Wu Haonan li Andrew li qikun Hu Siyao Song Bingjun Xu qi Lu State Key Laboratory of Chemical Engineering Department of Chemical Engineering Tsinghua University College of Chemistry and Molecular Engineering Peking University Ordos Laboratory

Renewable energy-driven bicarbonate conversion to valuable chemicals presents an attractive strategy for mitigating CO2emissions,as bicarbonate can be efficiently generated from the capture of atmospheric CO2using alkaline solutions with reactive *** this work,we present a CO2-mediated bicarbonate conversion to pure formate using a cation exchange membrane-based electrolyzer with a 25 cm2electrode *** electrolysis achieved selectivities exceeding 75%for formate at a total current of 2.5 A,achieving formate concentrations up to 1.2 M and yields as high as 95%over extended *** techno-economic assessment confirmed the economic viability of the process,highlighting the potential for bicarbonate electrolysis as a sustainable method for producing valuable chemicals.

关键词： Electrocatalysis Techno-economic assessments Electrochemistry Flow electrolyzer

Constructing 2D bismuth-based heterostructure for highly efficient photocatalytic CO2 reduction

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Tungsten 2025年第1期7卷 71-79页

作者： Ruo-Hang Xu Hao-Yu Jiang Dan-Dan Cui Kun-Rong Du Hong-Run Zhang Sheng-Jie Xu Ya-qi li zhi-Zhen Ren liang Wang Wei-Chang Hao Yi Du School of Physics and BUAA-UOW Joint Research Centre Beihang University Shenzhen Institute of Beihang University Centre for Catalysis and Clean Energy School of Environment and Science Griffith University

Reforming carbon dioxide（CO2） into fuels and valuable chemicals using solar energy holds significant potential for emission reduction and addressing energy supply *** recombination of photocarriers remains a major obstacle,however,to enhancing solar energy conversion efficiency in the photocatalytic reaction *** two-dimensional materials,constructing heterogeneous structures has emerged as an effective strategy to enhance the separation of photoexcited carriers by leveraging the internal electric field at the heterogeneous ***,we present a facile strategy for preparing Bi4NbO8Br/Bi2WO6plate-on-plate Z-scheme junctions with a strong internal electric field by in situ *** unique heterostructure facilitates efficient separation and transport of photoexcited charges by harnessing the internal electric field induced by chemical bonding at the lateral ***,the Bi4NbO8Br/Bi2WO6heterostructure exhibits enhanced CO2photoreduction properties,along with a CO yield rate of approximately 35 μmol·g-1·h-1under full light *** work offers novel insights into the synthesis of unique hetero structures intended to enhance the efficiency of photocatalytic CO2reduction.

关键词： Bi4NbO8Br/Bi2WO6 CO2 reduction Heterostructures Photocatalysts

Multilevel analysis of the central-peripheral-target organ pathway:contributing to recovery after peripheral nerve injury

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Neural Regeneration Research 2025年第10期20卷 2807-2822页

作者： Xizi Song Ruixin li Xiaolei Chu qi li Ruihua li qingwen li Kai-Yu Tong Xiaosong Gu Dong Ming Academy of Medical Engineering and Translational Medicine Tianjin UniversityTianjinChina Haihe Laboratory of Brain-Machine Interface and Human-Machine Fusion TianjinChina Department of Rehabilitation Tianjin University Tianjin HospitalTianjinChina Department of Hand Microsurgery Tianjin University Tianjin HospitalTianjinChina School of Exercise and Health Tianjin University of SportTianjinChina Department of Biomedical Engineering the Chinese University of Hong KongHong Kong Special Administrative RegionChina

Peripheral nerve injury is a common neurological condition that often leads to severe functional limitations and *** on the pathogenesis of peripheral nerve injury has focused on pathological changes at individual injury sites,neglecting multilevel pathological analysis of the overall nervous system and target *** has led to restrictions on current therapeutic *** this paper,we first summarize the potential mechanisms of peripheral nerve injury from a holistic perspective,covering the central nervous system,peripheral nervous system,and target *** peripheral nerve injury,the cortical plasticity of the brain is altered due to damage to and regeneration of peripheral nerves;changes such as neuronal apoptosis and axonal demyelination occur in the spinal *** nerve will undergo axonal regeneration,activation of Schwann cells,inflammatory response,and vascular system regeneration at the injury *** damage to target organs can occur,including skeletal muscle atrophy and sensory receptor *** then provide a brief review of the research advances in therapeutic approaches to peripheral nerve *** main current treatments are conducted passively and include physical factor rehabilitation,pharmacological treatments,cell-based therapies,and physical ***,most treatments only partially address the problem and cannot complete the systematic recovery of the entire central nervous system-peripheral nervous system-target organ ***,we should further explore multilevel treatment options that produce effective,long-lasting results,perhaps requiring a combination of passive(traditional)and active(novel)treatment methods to stimulate rehabilitation at the central-peripheral-target organ levels to achieve better functional recovery.

关键词： central nervous system central peripheral target organ multilevel pathological analysis nerve regeneration peripheral nerve injury peripheral nervous system target organs therapeutic approach