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Pulsed laser interference patterning of transition-metal carbides for stable alkaline water electrolysis kinetics

Carbon Energy 2024年第5期6卷 65-80页

作者： Yewon Oh Jayaraman Theerthagiri Ahreum Min Cheol Joo Moon Yiseul Yu Myong Yong Choi Department of Chemistry(BK21 FOUR) Research Institute of Natural SciencesGyeongsang National UniversityJinjuRepublic of Korea core−facility Center for Photochemistry and Nanomaterials Gyeongsang National UniversityJinjuRepublic of Korea

We investigated the role of metal atomization and solvent decomposition into reductive species and carbon clusters in the phase formation of transition-metal carbides(TMCs;namely,Co_(3)C,Fe_(3)C,TiC,and MoC)by pulsed laser ablation of Co,Fe,Ti,and Mo metals in *** interaction between carbon s-p-orbitals and metal d-orbitals causes a redistribution of valence structure through charge transfer,leading to the formation of surface defects as observed by X-ray photoelectron *** defects influence the evolved TMCs,making them effective for hydrogen and oxygen evolution reactions(HER and OER)in an alkaline ***_(3)C with more oxygen affinity promoted CoO(OH)intermediates,and the electrochemical surface oxidation to Co_(3)O_(4)was captured via in situ/operando electrochemical Raman probes,increasing the number of active sites for OER *** with more d-vacancies exhibits strong hydrogen binding,promoting HER kinetics,whereas Fe_(3)C and TiC with more defect states to trap charge carriers may hinder both OER and HER *** results show that the assembled membrane-less electrolyzer with Co_(3)C∥Co_(3)C and MoC∥MoC electrodes requires~2.01 and 1.99 V,respectively,to deliver a 10 mA cm−2 with excellent electrochemical and structural *** addition,the ascertained pulsed laser synthesis mechanism and unit-cell packing relations will open up sustainable pathways for obtaining highly stable electrocatalysts for electrolyzers.

关键词： acetone H_(2)and O_(2)evolution reactions pulsed laser ablation surface defects transition-metal carbides water electrolyzer

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Electrokinetic-mechanism of water and furfural oxidation on pulsed laser-interlaced Cu_(2)O and CoO on nickel foam

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Journal of Energy Chemistry 2024年第4期91卷 145-154页

作者： Yewon Oh Jayaraman Theerthagiri M.L.Aruna Kumari Ahreum Min Cheol Joo Moon Myong Yong Choi Department of Chemistry(BK21 FOUR) Research Institute of Natural SciencesGyeongsang National UniversityJinju 52828Republic of Korea Department of Chemistry The Oxford College of ScienceBengaluruKarnataka 560102India core-facility Center for Photochemistry&Nanomaterials Gyeongsang National UniversityJinju 52828Republic of Korea

The electrocatalytic oxidation of biomass-derived furfural(FF)feedstocks into 2-furoic acid(FA)holds immense industrial potential in optics,cosmetics,polymers,and ***,we fabricated Co O/Ni O/nickel foam(NF)and Cu_(2)O/Ni O/NF electrodes via in situ pulsed laser irradiation in liquids(PLIL)for the bifunctional electrocatalysis of oxygen evolution reaction(OER)and furfural oxidation reaction(FOR),*** oxidation of NF surface to NiO and deposition of CoO and/or Cu_(2)O on NF during PLIL offer distinct advantages for enhancing both the OER and ***/NiO/NF electrocatalyst provides a consistently low overpotential of~359 m V(OER)at 10 m A/cm^(2),achieving the maximum FA yield(~16.37 m M)with 61.5%selectivity,79.5%carbon balance,and a remarkable Faradaic efficiency of~90.1%during 2 h of FOR at 1.43 V(*** hydrogen electrode).Mechanistic pathway via in situ electrochemical-Raman spectroscopy on CoO/NiO/NF reveals the involvement of phase transition intermediates(NiOOH and CoOOH)as surface-active centers during electrochemical *** carbonyl carbon in FF is attacked by hydroxyl groups to form unstable hydrates that subsequently undergo further oxidation to yield FA *** method holds promise for large-scale applications,enabling simultaneous production of renewable building materials and fuel.

关键词： Pulsed laser irradiation in liquids Water and furfural oxidation In situ Raman spectroscopy CoO/NiO/nickel foam Cu_(2)O/Nio/nickel foam 2-furoic acid

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Sustainable Furfural Biomass Feedstocks Electrooxidation toward Value-Added Furoic Acid with Energy-Saving H2 Fuel Production Using Pt-Decorated Co3O4 Nanospheres

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Energy & Environmental Materials 2024年第2期7卷 354-362页

作者： Talshyn Begildayeνa Jayaraman Theerthagiri Seung Jun Lee Ahreum Min Gyeong-Ah Kim Siνakumar Manickam Myong Yong Choi Department of Chemistry (BK21 FOUR) Core-Facility Center for Photochemistry & Nanomaterials Research Institute of Natural Sciences Gyeongsang National University Petroleum and Chemical Engineering Faculty of Engineering Universiti Teknologi Brunei Jalan Tungku Link Gadong Bandar Seri Begawan BE1410 Brunei Darussalam Prof.

Here,furfural oxidation was performed to replace the kinetically sluggish O2evolution reaction（OER）.Pt-Co3O4nanospheres were developed via pulsed laser ablation in liquid（PLAL） in a single step for the paired electrocatalysis of an H2evolution reaction（HER） and furfural oxidation reaction（FOR）.The FOR afforded a high furfural conversion（44.2%） with a major product of2-furoic acid after a 2-h electrolysis at 1.55 V versus reversible hydrogen electrode in a 1.0-M KOH/50-mM furfural *** Pt-Co3O4electrode exhibited a small overpotential of 290 mV at 10 mA *** an anode and cathode in an electrolyzer system,the Pt-Co3O4electrocatalyst required only a small applied cell voltage of ～1.83 V to deliver 10 mA cm-2,compared with that of the pure water electrolyzer（OER‖HER,～1.99 V）.This study simultaneously realized the integrated production of energy-saving H2 fuel at the cathode and 2-furoic acid at the anode.

关键词： biomass conversion electrochemical furfural oxidation overall water splitting Pt-Co3O4 electrocatalyst pulsed laser ablation in liquid

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Three-phase Enriched Environment Improves Post-stroke Gait Dysfunction via Facilitating Neuronal Plasticity in the Bilateral Sensorimotor Cortex:A Multimodal MRI/PET Analysis in Rats

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Neuroscience Bulletin 2024年第6期40卷 719-731页

作者： Yun Lu Ziyue Lin Mingcong Li Yuming Zhuang Binbin Nie Jianfeng Lei Yuanyuan Zhao Hui Zhao School of Traditional Chinese Medicine Capital Medical UniversityBeijing100069China Beijing Key Lab of TCM Collateral Disease Theory Research Beijing100069China Beijing Engineering Research Center of Radiographic Techniques and Equipment Institute of High Energy PhysicsChinese Academy of SciencesBeijing100049China Medical Imaging Laboratory of core facility Center Capital Medical UniversityBeijing100069China

The three-phase Enriched Environment(EE)paradigm has been shown to promote post-stroke functional improvement,but the neuronal mechanisms are still *** this study,we applied a multimodal neuroimaging protocol combining magnetic resonance imaging(MRI)and positron emission tomography(PET)to examine the effects of post-ischemic EE treatment on structural and functional neuroplasticity in the bilateral sensorimotor *** were subjected to permanent middle cerebral artery *** motor function of the rats was examined using the DigiGait *** was applied to investigate the EE-induced structural modifications of the bilateral sensorimotor cortex.[^(18)F]-fluorodeoxyglucose PET was used to detect glucose *** oxygen level-dependent(BOLD)-functional MRI(fMRI)was used to identify the regional brain activity and functional connectivity(FC).In addition,the expression of neuroplasticity-related signaling pathways including neurotrophic factors(BDNF/CREB),axonal guidance proteins(Robo1/Slit2),and axonal growth-inhibitory proteins(NogoA/NgR)as well as downstream proteins(RhoA/ROCK)in the bilateral sensorimotor cortex were measured by Western *** results showed the three-phase EE improved the walking *** T2 mapping imaging and diffusion tensor imaging demonstrated that EE benefited structure integrity in the bilateral sensorimotor ***-MRI fused images showed improved glucose metabolism in the corresponding regions after EE ***,the BOLD-based amplitude of low-frequency fluctuations showed that EE increased spontaneous activity in the bilateral motor cortex and ipsilateral sensory *** addition,FC results showed increased sensorimotor connectivity in the ipsilateral hemisphere and increased interhemispheric motor cortical connectivity and motor cortical-thalamic connectivity following EE *** addition,a strong correlation was found between increased functional connectivity and improv

关键词： Enriched environment Gait function Neuronal plasticity Structural integrity Glucose metabolism Functional connectivity Microenvironmental molecules Axonogenesis

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Inhibition of xanthine oxidase alleviated pancreatic necrosis via HIF-1α-regulated LDHA and NLRP3 signaling pathway in acute pancreatitis

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Acta Pharmaceutica Sinica B 2024年第8期14卷 3591-3604页

作者： Juan Rong Chenxia Han Yan Huang Yiqin Wang Qi Qiu Manjiangcuo Wang Shisheng Wang Rui Wang Juqin Yang Xia Li Chenggong Hu Zhiyao Chen Lihui Deng Wei Huang Qing Xi Dan Du West China Center of Excellence for Pancreatitis Institute of Integrated Traditional Chinese and Western MedicineWest China Hospital/West China Medical SchoolSichuan UniversityChengdu 610041China State Key Laboratory of Bioactive Substance and Function of Natural Medicines Institute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050China Advanced Mass Spectrometry Center Research Core FacilityFrontiers Science Center for Disease-related Molecular NetworkWest China HospitalSichuan UniversityChengdu 610213China Proteomics-Metabolomics Platform Research Core FacilityInstitutes for Systems GeneticsWest China HospitalSichuan UniversityChengdu 610093China Biobank West China HospitalSichuan UniversityChengdu 610093China West China School of Nursing Sichuan UniversityChengdu 610041China Department of Critical Care Medicine West China HospitalSichuan UniversityChengdu 610041China

Acute pancreatitis(AP)is a potentially fatal condition with no targeted treatment *** inhibiting xanthine oxidase(XO)in the treatment of AP has been studied in several experimental models and clinical trials,whether XO is a target of AP and what its the main mechanism of action is remains ***,we aimed to re-evaluate whether XO is a target aggravating AP other than merely generating reactive oxygen species that trigger *** first revealed that XO expression and enzyme activity were significantly elevated in the serum and pancreas of necrotizing AP *** also found that allopurinol and febuxostat,as purine-like and non-purine XO inhibitors,respectively,exhibited protective effects against pancreatic acinar cell death in vitro and pancreatic damage in vivo at different doses and treatment time ***,we observed that conditional Xdh overexpression aggravated pancreatic necrosis and *** mechanism analysis showed that XO inhibition restored the hypoxia-inducible factor 1-alpha(HIF-1α)-regulated lactate dehydrogenase A(LDHA)and NOD-like receptor family pyrin domain containing 3(NLRP3)signaling pathways and reduced the enrichment of^(13)C_(6)-glucose to^(13)C_(3)-***,we observed that clinical circulatory XO activity was significantly elevated in severe cases and correlated with C-reactive protein levels,while pancreatic XO and urate were also increased in severe AP *** results together indicated that proper inhibition of XO might be a promising therapeutic strategy for alleviating pancreatic necrosis and preventing progression of severe AP by downregulating HIF-1α-mediated LDHA and NLRP3 signaling pathways.

关键词： Xanthine oxidase inhibitor Multi-omics HIF-1a Necrotizing acute pancreatitis Lactate Therapeutic target NLRP3 Metabolic flux

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Cav3.2 channel regulates cerebral ischemia/reperfusion injury:a promising target for intervention

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Neural Regeneration Research 2024年第11期19卷 2480-2487页

作者： Feibiao Dai Chengyun Hu Xue Li Zhetao Zhang Hongtao Wang Wanjun Zhou Jiawu Wang Qingtian Geng Yongfei Dong Chaoliang Tang Graduate School Wannan Medical CollegeWuhuAnhui ProvinceChina Department of Anesthesiology The First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui ProvinceChina core facility Center for Medical Sciences The First Affiliated Hospital of USTC(Anhui Provincial Hospital)HefeiAnhui ProvinceChina Department of Pharmacy The First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui ProvinceChina Department of Neurosurgery The First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui ProvinceChina

Calcium influx into neurons triggers neuronal death during cerebral ischemia/reperfusion *** calcium channels are involved in cerebral ischemia/reperfusion ***3.2 channel is a main subtype of T-type calcium channels.T-type calcium channel blockers,such as pimozide and mibefradil,have been shown to prevent cerebral ischemia/reperfusion injury-induced brain ***,the role of Cav3.2 channels in cerebral ischemia/reperfusion injury remains ***,in vitro and in vivo models of cerebral ischemia/reperfusion injury were established using middle cerebral artery occlusion in mice and high glucose hypoxia/reoxygenation exposure in primary hippocampal *** results showed that Cav3.2 expression was significantly upregulated in injured hippocampal tissue and primary hippocampal *** further established a Cav3.2 gene-knockout mouse model of cerebral ischemia/reperfusion ***3.2 knockout markedly reduced infarct volume and brain water content,and alleviated neurological dysfunction after cerebral ischemia/reperfusion ***,Cav3.2 knockout attenuated cerebral ischemia/reperfusion injury-induced oxidative stress,inflammatory response,and neuronal *** the hippocampus of Cav3.2-knockout mice,calcineurin overexpression offset the beneficial effect of Cav3.2 knockout after cerebral ischemia/reperfusion *** findings suggest that the neuroprotective function of Cav3.2 knockout is mediated by calcineurin/nuclear factor of activated T cells 3 *** from this study suggest that Cav3.2 could be a promising target for treatment of cerebral ischemia/reperfusion injury.

关键词： calcineurin Cav3.2 channel cerebral ischemia/reperfusion hippocampus hypoxia/reoxygenation inflammatory response nuclear factor of activated T cells 3 oxidative stress primary hippocampal neurons stroke

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A seven-crystal spectrometer for high-energy resolution X-ray spectroscopy at Shanghai Synchrotron Radiation facility

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Nuclear Science and Techniques 2024年第9期35卷 82-91页

作者： Bing-Bao Mei Liang-Xin Wang Song-Qi Gu Xiao-Zhi Su Shuo Zhang Yao Wei Jing-Yuan Ma Zheng Jiang Fei Song Shanghai Synchrotron Radiation facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201800China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201204China National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230026China

A Johann-type X-ray spectrometer was successfully developed at the hard X-ray branch(in-vacuum undulator with a 24-mm periodic length)of the energy material beamline(E-line)at the Shanghai Synchrotron Radiation facility(SSRF).This spectrometer was utilized to implement X-ray emission spectroscopy(XES),high-energy resolution fluorescence-detected X-ray absorption spectroscopy(HERFD-XAS),and resonant inelastic X-ray *** spherically bent crystals were positioned on the respective vertical 500-mm-diameter Rowland circles,adopting an area detector to increase the solid angle to 1.75%of 4πsr,facilitating the study of low-concentrate systems under complex reaction *** under the atmosphere pressure,the spectrometer covers the energy region from 3.5 to 18 keV,with the Bragg angle ranging from 73°to 86°during vertical *** offers a promised energy resolution of sub-eV(XES)and super-eV(HERFD-XAS).Generally,these comprehensive core-level spectroscopy methods based on hard X-rays at the E-line with an extremely high photon flux can meet the crucial requirements of a green energy ***,they provide substantial support for scientific advances in fundamental research.

关键词： X-ray emission spectroscopy High-energy-resolution X-ray spectrometer Johann geometry Energy materials SSRF

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Evolving landscape of treatments targeting the microenvironment of liver metastases in non-small cell lung cancer

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Chinese Medical Journal 2024年第9期137卷 1019-1032页

作者： Lingling Zhu Xianzhe Yu Xiaojun Tang Chenggong Hu Lei Wu Yanyang Liu Qinghua Zhou Lung Cancer Center Lung Cancer InstituteWest China HospitalSichuan UniversityChengduSichuan 610041China Key Laboratory of Drug Targeting and Drug Delivery Systems Ministry of EducationWest China School of PharmacyCollege of Polymer Science and EngineeringSichuan UniversityChengduSichuan 610041China Department of Gastrointestinal Surgery Chengdu Second People’s HospitalChengduSichuan 610041China Department of Critical Care Medicine West China HospitalSichuan UniversityChengduSichuan 610041China core facility of West China Hospital Sichuan UniversityChengduSichuan 610041China Department of Medical Oncology Cancer CenterWest China HospitalSichuan UniversityChengduSichuan 610041China

Liver metastases(LMs)are common in lung *** substantial advances in diagnosis and treatment,the survival rate of patients with LM remains low as the immune-suppressive microenvironment of the liver allows tumor cells to evade the immune *** impact of LMs on the outcomes of immune checkpoint inhibitors in patients with solid tumors has been the main focus of recent translational and clinical *** evidence indicates that the hepatic microenvironment delivers paracrine and autocrine signals from non-parenchymal and parenchymal ***,these microenvironments create pre-and post-metastatic conditions for the progression of ***,we reviewed the epidemiology,physiology,pathology and immunology,of LMs associated with non-small cell lung cancer and the role and potential targets of the liver microenvironment in LM in each phase of ***,we reviewed the current treatment strategies and challenges that should be overcome in preclinical and clinical *** approaches target liver elements as the basis for future clinical trials,including combinatorial interventions reported to resolve hepatic immune suppression,such as immunotherapy plus chemotherapy,immunotherapy plus radiotherapy,immunotherapy plus anti-angiogenesis therapy,and surgical resection.

关键词： Non-small cell lung cancer Liver metastasis Combination therapy Immune checkpoint inhibitors Immune tolerance Immunotherapy

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OsPRMT6a-mediated arginine methylation of OsJAZ1 regulates jasmonate signaling and spikelet development in rice

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Molecular Plant 2024年第6期17卷 900-919页

作者： Kun Dong Fuqing Wu Siqi Cheng Shuai Li Feng Zhang Xinxin Xing Xin Jin Sheng Luo Miao Feng Rong Miao Yanqi Chang Shuang Zhang Xiaoman You Peiran Wang Xin Zhang Cailin Lei Yulong Ren Shanshan Zhu Xiuping Guo Chuanyin Wu Dong-Lei Yang Qibing Lin Zhijun Cheng Jianmin Wan State Key Laboratory of Crop Gene Resources and Breeding National Key Facility for Crop Gene Resources and Genetic ImprovementInstitute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China State Key Laboratory for Crop Genetics and Germplasm Enhancement Nanjing Agricultural UniversityNanjing 210095China

Although both protein arginine methylation(PRMT)and jasmonate(JA)signaling are crucial for regulating plant development,the relationship between these processes in the control of spikelet development remains *** this study,we used the CRISPR/Cas9 technology to generate two OsPRMT6a loss-of-function mutants that exhibit various abnormal spikelet ***,we found that OsPRMT6a can methylate arginine residues in JA signal repressors OsJAZ1 and *** showed that arginine methylation of OsJAZ1 enhances the binding affinity of OsJAZ1 with the JA receptors OsCOI1a and OsCOI1b in the presence of JAs,thereby promoting the ubiquitination of OsJAZ1 by the SCF^(OsCOI1a/OsCOI1b) complex and degradation via the 26S *** process ultimately releases OsMYC2,a core transcriptional regulator in the JA signaling pathway,to activate or repress JA-responsive genes,thereby maintaining normal plant(spikelet)***,in the osprmt6a-1 mutant,reduced arginine methylation of OsJAZ1 impaires the interaction between OsJAZ1 and OsCOI1a/OsCOI1b in the presence of *** a result,OsJAZ1 proteins become more stable,repressing JA responses,thus causing the formation of abnormal spikelet ***,we discovered that JA signaling reduces the OsPRMT6a mRNA level in an OsMYC2-dependent manner,thereby establishing a negative feedback loop to balance JA *** further found that OsPRMT6a-mediated arginine methylation of OsJAZ1 likely serves as a switch to tune JA signaling to maintain normal spikelet development under harsh environmental conditions such as high ***,our study establishes a direct molecular link between arginine methylation and JA signaling in rice.

关键词： protein arginine methylation jasmonate signaling negative feedback loop spikelet development adaptation to heat stress rice

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Sub-10-nm-sized Au@AuxIr1-x metal-core/alloy-shell nanoparticles as highly durable catalysts for acidic water splitting

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National Science Review 2024年第4期11卷 130-140页

作者： Huimin Wang Zhe-ning Chen Yuanyuan Wang Dongshuang Wu Minna Cao Fanfei Sun Rong Cao State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences University of Chinese Academy of Sciences School of Materials Science and Engineering Nanyang Technological University Shanghai Synchrotron Radiation facility Shanghai Institute of Applied Physics Chinese Academy of Sciences Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China

The absence of efficient and durable catalysts for oxygen evolution reaction（OER） is the main obstacle to hydrogen production through water splitting in an acidic ele ***,we report a controllable synthesis method of surface IrOxwith changing Au/Ir compositions by constructing a range of sub-10-nm-sized core-shell nanocatalysts composed of an Au core and AuxIr1-xalloy *** particular,Au@Au0.43Ir0.57exhibits 4.5 times higher intrinsic OER activity than that of the commercial Ir/*** X-ray-based spectroscopies,electron microscopy and density functional theory calculations revealed a balanced binding of reaction intermediates with enhanced *** water-splitting cell using a load of 0.02 mgIr/cm2of Au@Au0.43Ir0.57as both anode and cathode can reach 10 mA/cm2at 1.52 V and maintain activity for at least194 h,which is better than the cell using the commercial couple Ir/C‖Pt/C（1.63 V,0.2 h）.

关键词： controllable synthesis of surface IrOx oxygen evolution reaction acidic water splitting catalytic stability transition metal catalysts

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