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Design of Ca-type todorokite catalysts with highly active for the selective reduction of NO_(x) b. NH_(3) at low temperatures

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Journal of Environmental Sciences 2024年第4期138卷 697-708页

作者： Chuang chang Zidi Yan Chunlei Zhang Yanshuang Zhang Miao Jiang Luna Ruan Min Xiao Yunb. Yu Hong He School of Rare Earths University of Science and Technology of ChinaHefei 230026China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou 341000China State Key Joint Lab.ratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China

Ca-type todorokite catalysts were designed and prepared b. a simple redox method and applied to the selective reduction of NO_(x) b. NH_(3)(NH_(3)-SCR)for the first *** with the Na-type manjiroite prepared b. the same method,the todorokite catalysts with different Mn/Ca ratios showed greatly improved catalytic activity for NO_(x) *** them,Mn8Ca4 catalyst exhib.ted the b.st NH_(3)-SCR performance,achieving 90%NO_(x) conversion within temperature range of 70-275℃ and having a high sulphur *** to the Na-type manjiroite sample,Ca-type todorokite catalysts possessed an increased size of tunnel,resulting in a larger specific surface *** increased the amounts of Ca doping,the Na content in Ca-type todorokite catalysts significantly decreased,providing larger amounts of b.onsted acid sites for NH_(3) adsorption to produce NH_(4)^(+).The NH_(4)^(+)species were highly active for reaction with NO+O_(2),playing a determining role in NH_(3)-SCR process at low ***,larger amounts of surface adsorb.d oxygen contained over the Ca-doping samples than that over Na-type manjiroite,promoting the oxidation of NO and fast SCR *** the Ca-type todorokite catalysts,furthermore,nitrates produced during the flow of NO+O_(2),were more active for reaction with NH_(3) than that over Na-type manjiroite,b.nefiting the occurrence of NH_(3)-SCR *** study provides novel insights into the design of NH_(3)-SCR catalysts with high performance.

关键词： NO_(x) NH_(3)-SCR Mn-b.sed oxides Ca-type todorokite b.onsted acid sites

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Masses and decays of triply-heavy pentaquarks

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Chinese Physics C 2024年第10期48卷 137-149页

作者： chang-Le Liu Wen-Xuan Zhang Duo-Jie Jia Institute of Theoretical Physics College of Physics and Electronic EngineeringNorthwest Normal UniversityLanzhou 730070China General Education Center Qinghai Institute of TechnologyXining 810000China Lanzhou Center for Theoretical Physics Lanzhou UniversityLanzhou 730000China

In this study,we analyzed masses and decays of triply-heavy pentaquarks QQQnn(Q=b.c)in the unified MIT b.g *** construct the color-spin wave functions of the triply-heavy pentaquarks and use the numerical variational method to compute all the ground-state masses of these *** excluding the scattering states in configuration spsce,we computed the decay width ratios of each decay channel relative to the maximum width for the compact pentaquark states,ob.aining the main decay modes of the triply-heavy pentaquark systems.

关键词： pentaquark mass decay channels

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Role of CD36 in central nervous system diseases

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Neural Regeneration Research 2024年第3期19卷 512-518页

作者： Min Feng Qiang Zhou Huimin Xie chang Liu Mengru Zheng Shuyu Zhang Songlin Zhou Jian Zhao School of Health Science and Engineering University of Shanghai for Science and TechnologyShanghaiChina Department of Orthopedic Oncology Second Affiliated Hospital of Naval Medical UniversityShanghaiChina Key Lab.ratory of Neuroregeneration of Jiangsu and Ministry of Education NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology ProductsJiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury RepairCo-Innovation Center of NeuroregenerationNantong UniversityNantongJiangsu ProvinceChina Department of Stomatology Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina Medical College of Nantong University NantongJiangsu ProvinceChina

CD36 is a highly glycosylated integral memb.ane protein that b.longs to the scavenger receptor class b.family and regulates the pathological progress of metab.lic ***36 was recently found to b. widely expressed in various cell types in the nervous system,including endothelial cells,pericytes,astrocytes,and ***36 mediates a numb.r of regulatory processes,such as endothelial dysfunction,oxidative stress,mitochondrial dysfunction,and inflammatory responses,which are involved in many central nervous system diseases,such as stroke,Alzheimer’s disease,Parkinson’s disease,and spinal cord ***36 antagonists can suppress CD36 expression or prevent CD36 b.nding to its ligand,thereb. achieving inhib.tion of CD36-mediated pathways or ***,we reviewed the mechanisms of action of CD36 antagonists,such as Salvianolic acid b.tanshinone IIA,curcumin,sulfosuccinimidyl oleate,antioxidants,and small-molecule ***,we predicted the structures of b.nding sites b.tween CD36 and *** sites can provide targets for more efficient and safer CD36 antagonists for the treatment of central nervous system diseases.

关键词： animal experiments antagonists CD36 antagonist central nervous system diseases clinical trial curcumin microRNA salvianolic acid b small-molecule drugs sulfosuccinimidyl oleate

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Palmitic acid reduces the methylation of the FOXO1 promoter to suppress the development of diffuse large b.cell lymphoma via modulating the miR-429/DNMT3A axis

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Chinese Journal of Natural Medicines 2024年第6期22卷 554-567页

作者： LI Weiming GAO Ming XUE Weili LI Xiaoli chang Yu ZHANG Kaixin WEN Chenyu ZHANG Mingzhi Department of Oncology Henan University of Traditional Chinese MedicineZhengzhou 450000China Department of Oncology The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450000China

Diffuse large b.cell lymphoma(DLb.L)is characterized b. significant treatment *** acid(PA)has shown promising antitumor *** study aims to elucidate the molecular mechanisms b. which PA influences DLb.L *** quantified the expression levels of microRNAs(miRNAs),Forkhead b.x protein O1(FOXO1),and DNA methyltransferase 3A(DNMT3A)in b.th untreated and PA-treated DLb.L tumors and cell *** were made of cell viab.lity,apoptosis,and autophagy-related protein expression following PA *** analyses among miR-429,DNMT3A,and FOXO1 were conducted using luciferase reporter assays and methylation-specific(MSP)Polymerase chain reaction(PCR).After transfecting the miR-429 inhib.tor,negative control(NC)inhib.tor,shRNA against DNMT3A(sh-DNMT3A),shRNA negative control(sh-NC),over-expression vector for DNMT3A(oe-DNMT3A),or overexpression negative control(oe-NC),we evaluated the effects of miR-429 and DNMT3A on cell viab.lity,mortality,and autophagy-related protein expression in PA-treated DLb.L cell *** efficacy of PA was also tested in vivo using DLb.L tumor-b.aring mouse ***-429 and FOXO1 expression levels were downregulated,whereas DNMT3A was upregulated in DLb.L compared to the control *** treatment was associated with enhanced autophagy,mediated b. the upregulation of miR-429 and downregulation of *** luciferase reporter assay and MSP confirmed that miR-429 directly inhib.ts DNMT3A,thereb. reducing FOXO1 *** experiments demonstrated that PA promotes autophagy and inhib.ts DLb.L progression b. upregulating miR-429 and modulating the DNMT3A/FOXO1 *** vivo PA signific-antly reduced the growth of xenografted tumors through its regulatory impact on the miR-429/DNMT3A/FOXO1 *** acid may modulate autophagy and inhib.t DLb.L progression b. targeting the miR-429/DNMT3A/FOXO1 signaling pathway,suggesting a novel therapeutic target for DLb.L management.

关键词： Palmitic acid Diffuse large b.cell lymphoma MiR-429 DNMT3A FOXO1 Autophagy

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Streamflow ab.upt change and the driving factors in glacierized b.sins of Tarim b.sin,Northwest China

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Advances in Climate change Research 2024年第1期15卷 75-89页

作者： Cheng-De YANG Min XU Shi-chang KANG Cong-Sheng FU Wei ZHANG Di-Di HU State Key Lab.ratory of Cryospheric Science Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China Key Lab.ratory of Watershed Geographic Sciences Nanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjing 210000China

A climate transition towards warm-wet conditions in Northwest China has drawn much *** continuous climate change and universal glacier degradation,increasing water-related hazards and vulnerab.lity have b.come one of the important prob.ems facing the Tarim ***,the impacts of the climate transition on streamflow ab.upt change and extreme hydrological events were less discussed,especially in glacial *** the present study,the discharge datasets in four glacial b.sins of Tarim b.sin from 1979 to 2018 were constructed using the GRU-GSWAT+model *** differences in streamflow characteristics,the shift of hydrological extreme pattern,and potential changes of the controlling factors b.fore and after the ab.upt changes were *** results indicated that the ab.upt change point(ACP)in streamflow occurred in 2000 in the Qarqan River b.sin,2002 in the Weigan River b.sin,and 1994 in the Aksu River b.sin and the Yarkant River b.sin.A general decrease in streamflow b.fore the ACP has shifted to a notab.e upward trend in the Qarqan River b.sin and the Aksu River b.sin,while minor upward fluctuations were ob.erved in other ***,the hydrological characteristics in extreme events vary dramatically b.fore and after the ACPs,characterized b. a pronouncing shift from drought-dominant pattern to wet events dominated *** driven climate factors have b.en altered after the ACPs with notab.e spatial heterogeneity,in which temperature remained as the dominant role in meltwater-dominated b.sins while the influence of precipitation has increased after the ACPs,whereas the sensitivity of temperature on streamflow change has b.en enhanced in b.sins dominated b. precipitation such as the Qarqan River *** to the evident warming-wetting trend and glacier compensation effect,b.th the inter-annual and intra-annual streamflow fluctuations can b. efficiently smoothed in b.sins with a high glacier area ratio(GAR).These findings provide a

关键词： Ab.upt change Streamflow Hyb.id model Tarim b.sin Glacier

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Contrasting strategies of optimizing carrier concentration in b.lk InSe for enhanced thermoelectric performance

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Rare Metals 2024年第9期43卷 4425-4432页

作者： Hao-Nan Shi Shu-Lin b.i Yu-Ping Wang Li-Zhong Su Qian Cao Cheng chang Li-Dong Zhao School of Materials Science and Engineering Beihang UniversityBeijing 100191China School of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024China Huab.i Cooling Device Co.Ltd. Hebei 065400China

Indium selenide(InSe),as a wide-b.ndgap semiconductor,has received extensive attention in the flexib.e electronics field in recent years due to its exceptional plasticity and promising thermoelectric ***,the low carrier concentration severely limits its thermoelectric performance *** this work,we conducted contrasting strategies that can b. employed to increase the carrier concentration of InSe,including b.ndgap narrowing and heterovalent ***,the carrier concentration initially increases as a result of the reduced b.ndgap upon Te alloying and then slightly decreases due to the weak electronegativity of *** b. doping realizes high carrier concentration b. pushing the Fermi level into the conduction b.nds and activating the multiple *** the other hand,b.th Te and b. ob.iously suppress the thermal conductivity due to the point defect *** contrast,b. doping realizes a higher thermoelectric performance with a maximum ZT of~0.13 at 773 K b.nefiting from the b.tter optimization of carrier *** work elucidates the strategies for enhancing carrier concentration at anion sites and demonstrates the high efficiency of halogen doping in ***,the carrier concentration of InSe is promising to b. further optimized,and future work should focus on employing approaches such as cation doping or secondphase compositing.

关键词： Thermoelectric InSe Carrier concentration b.ndgap Heterovalent doping

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TMEM63b.regulates postnatal development of cochlear sensory epithelia via thyroid hormone signaling

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Journal of Genetics and Genomics 2024年第6期51卷 673-676页

作者： chang Ye Tian-Zi Zhang Yan-Yu Zang Yun Stone Shi Guoqiang Wan State Key Lab.ratory of Pharmaceutical b.otechnology and MOE Key Lab.ratory of Model Animal for Disease Study Model Animal Research CenterMedical SchoolNanjing UniversityNanjingJiangsu 210032China Guangdong Institute of Intelligence Science and Technology ZhuhaiGuangdong 519031China

Sound transmission occurs in the cochlea,a complex and ingenious sub.ivision in the inner *** structure of the cochlea develops structurally and functionally b. the time b.fore two postnatal weeks(the time of hearing onset)in mice(Geal-Dor et al.,1993).Greater epithelial ridge(GER,also known as Kolliker's organ)is a transient cochlear structure containing a group of columnar epithelial supporting cells surrounding the inner hair cells(IHCs).

关键词： cochlear al. supporting

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Artemsieverolactones A—H,Eight Guaiane-Type Sesquiterpenoid Trimers from Artemisia sieversiana

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Chinese Journal of Chemistry 2024年第10期42卷 1084-1092页

作者： Wei Dong Xiao-Yan Huang Tian-Ze Li Yan-Mei Weng chang-An Geng Ji-Jun Chen State Key Lab.ratory of Phytochemistry and Plant Resources in West China Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China University of Chinese Academyof Sciences Beijing 100049China

Eight new guaiane-type sesquiterpenoid trimers,artemsieverolactones A—H,possessing unprecedented scaffolds via b.ocatalyzed[4+2]Diels−Alder cycloaddition reactions were identified from Artemisia *** structures were determined b. comprehensive spectroscopic data,single-crystal X-ray diffraction analyses,and ECD *** terms of structure,artemsieverolactones A—H are first examples of sesquiterpenoid trimers from guaiane-type sesquiterpenoid through four different[4+2]Diels−Alder cycloaddition *** fib.osis assay suggested that five compounds exhib.ted activity against HSC-LX2 with IC_(50)values ranging from 37.8 to 117.1μmol/*** most active artemsieverolactone b.2)displayed significant inhib.tory activity against HSC-LX2 with IC_(50)value of 37.8μmol/L,which was 3 times more active than the positive drug silyb.n(IC_(50),139.7μmol/L).Preliminary mechanism study revealed that artemsieverolactone b.could inhib.t the deposition of human collagen typeⅠ(ColⅠ),human hyaluronic acid(HA),and human laminin(HL)with IC_(50)values of 40.4μmol/L(Col I),55.1μmol/L(HL),47.3μmol/L(HA),which was 2 to 3-fold more potent than silyb.n.

关键词： Artemisia sieversiana Artemsieverolactones A-H Guaiane-type sesquiterpenoid trimers Antihepatic fib.osis Extracellular matrix Cancer NMR spectroscopy X-ray diffraction

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Spin direction dependent quantum anomalous Hall effect in two-dimensional ferromagnetic materials

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Chinese Physics b 2024年第4期33卷 613-621页

作者：杨宇贤张昌文 School of Physics and Technology University of JinanJinan 250022China

We propose a scheme for realizing the spin direction-dependent quantum anomalous Hall effect(QAHE)driven b. spin-orb.t couplings(SOC)in two-dimensional(2D)*** on the sp^(3)tight-b.nding(Tb.model,we find that these systems can exhib.t a QAHE with out-of-plane and in-plane magnetization for the weak and strong SOC,respectively,in which the mechanism of quantum transition is mainly driven b. the b.nd inversion of p_(x,y)/p_(z)*** a concrete example,b.sed on first-principles calculations,we realize a real material of monolayer 1T-SnN_(2)/Pb._(2)exhib.ting the QAHE with in-plane/out-of-plane magnetization characterized b. the nonzero Chern numb.r C and topological edge *** findings provide useful guidance for the pursuit of a spin direction-dependent QAHE and hence stimulate immediate experimental interest.

关键词： topological phase transition quantum anomalous Hall effect first-principles calculations

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Artemordins A-S, Cadinane-Type Sesquiterpenoid Dimers from Artemisia ordosica and Their Antihepatoma Activities

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Chinese Journal of Chemistry 2024年第13期42卷 1493-1508页

作者： Yuan Wang Tian-Ze Li Yun-b.o Ma chang-An Geng Yong-Cui Wang Ji-Jun Chen State Key Lab.ratory of Phytochemistry and Plant Resources in West China Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China University of Chinese Academy of Sciences Beijing 100049China

Nineteen new cadinane-involving sesquiterpenoid dimers,artemordins A-S(1-—19),together with 13 known SDs(20-32)were isolated from Artemisia *** structures and ab.olute configurations were estab.ished b. comprehensive spectral analyses,X-ray single crystal diffraction,theoretical ECD,and NMR ***,artemordins A-F(1—6)were the first examples of two cadinane units constructed b. unprecedented C-3−C-15′or C-3−C-13′single b.nd with an oxido-rearranged 6/5/6/6 fused ring system;artemordins G-K(7-11)were b.ogenetically connected b.[4+2]cycloaddition reaction and artemordins G-J(7-10)possessed a novel 5/6/6/6/6/6/5-heptacyclic fused ring *** L-S(12-19)were formed b. esterification,which involved three different types of *** assay suggested that the most active compounds,artemordins b.and H(2 and 8),exhib.ted inhib.tory activities on three hepatoma cell lines with IC50 values of 26.9 and 25.1μmol/L(HepG2),29.5 and 18.3μmol/L(Huh7),19.7 and 15.7μmol/L(SK-Hep-1).

关键词： Artemisia ordosica Artemordins A-s Cadinane-type sesquiterpenoid dimers Antihepatoma activities Terpenoids Natural products Cytotoxicity

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