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Unveiling the superior hydrogen evolution reaction activity of 1T-2H MoS_(2)heterointerface by on-chip microdevices

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Nano Research 2025年第1期18卷 149-156页

作者： Bowen Liu Junjie Xiong Shuaishuai Xu Xinying Luo Wenyan yao Shigang Liu Yuting Du Qinghua zhang Yang Gao bin Wang CAS key Laboratory of Nanosystem and Hierarchical Fabrication National Center for Nanoscience and Technology(NCNST)Beijing 100190China University of Chinese Academy of Sciences Beijing 100049China School of Materials Science and Engineering China University of Petroleum(East China)Qingdao 266580China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China

The identification and clarification of active sites of MoS_(2)have long been the focus of research efforts in hydrogen evolution reaction(HER).In this study,we constructed phase transition-induced 1T-2H MoS_(2)heterojunction via lithium intercalation and evaluated the HER activity using on-chip electrocatalytic microdevices(OCEMs).The heterojunction achieved an overpotential of only 226 mV at a cathodic current density of 10 mA/cm^(2),outperforming the basal planes of 1T and 2H MoS_(2).Furthermore,density functional theory(DFT)calculations demonstrated that the charge redistribution occurs at the 1T-2H MoS_(2)interface with electrons transferring from 1T to 2H MoS_(2),and the interfacial S atom at the top site of 1T MoS_(2)presents the smallest overpotential of 0.37 ***,the interference from highly active edge sites was avoided by precisely exposing specific active areas,quantitatively revealing the catalytic activity order of different types of in-plane MoS_(2)active *** work enables a systematic investigation of the HER activity of various active sites in MoS_(2),laying the foundation for quantitative analysis of activity in other lowdimensional materials.

关键词： on-chip microdevice phase transition heterojunction MoS_(2) hydrogen evolution reaction(HER)

Geohazards Induced by the Lushan Ms7.0 Earthquake in Sichuan Province, Southwest China:Typical Examples, Types and Distributional Characteristics

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Acta Geologica Sinica(English Edition) 2013年第3期87卷 646-657页

作者： zhang Yongshuang DONG Shuwen HOU Chuntang guo Changbao yao Xin LI bin DU Jianjun zhang Jiagui Institute of Geomechanics Chinese Academy of Geological Sciences Chinese Academy of Geological Sciences

Geohazards induced by the Lushan Ms 7.0 earthquake on April 20, 2013 mainly have four types： collapse, landslide, slope debris flow, and sand-soil liquefaction. These geohazards mainly occurred near the epicenter, on steep slopes or below cliffs in high mountain and deep valley areas, and at or near fault ends. They have no obvious relationships to active faults, but their relationships to the weathering degree and structures of rock and rock mass are obvious. Compared with the Wenchuan Ms 8.0 earthquake on May 12, 2008, the Lnshan earthquake is relatively little in the impact force and the throwing amount. All of these should be related to the magnitude of this earthquake, not very large but not very little. This character of the Lushan earthquake would make some processes uncompleted so as to bring about some concealed geohazards. Finally, in order to deal with challenges presented by such conceal geohazards, some brief recommendations are put forward.

关键词： Lushan earthquake geohazard collapse landslide slope debris flow sand-soil liquation

The role of miRi56 in rejuvenation in Arabidopsis thaliana

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Journal of Integrative Plant Biology 2020年第5期62卷 550-555页

作者： bin-bin Ye ke zhang Jia-Wei Wang National key Laboratory of Plant Molecular Genetics(NKLPMG) CAS Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology and Ecology(SIPPE)the Chinese Academy of Sciences(CAS)Shanghai 200032China University of Chinese Academy of Sciences Beijing 100049Beijing School of Life Science and Technology ShanghaiTech UniversityShanghai 200031China

Rejuvenation refers to the process enabling plants to regain physlological and molecular characteristics lost after entering the adult phase. The underlying molecular mechanism is pooly under-stood. Previous studies have revealed that mi-CroRNA156 (miR156) is highly accumulated at juvenile stage and maintains juvenile traits by repressing a group of SQUAMOSA PROMOTER binDING PROTEIN-LIke (SPL) transcription factors. Here, we found that induction of miR156 expression in adult leaves can only restore some aspects of juvenile traits, such as loss of epidermal leaf hairs on the lower side of leaves and absence of serration at the leaf edges, but is incapable of delaying flowering and promoting adventitious root production.

关键词： traits Arabidopsis maintain

Non-specific phospholipase C4 hydrolyzes phosphosphingolipids and phosphoglycerolipids and promotes rapeseed growth and yield

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Journal of Integrative Plant Biology 2023年第11期65卷 2421-2436页

作者： bao Yang Jianwu Li Jiayu Yan ke zhang Zhewen Ouyang Yefei Lu Huili Wei Qing Li Xuan yao Shaoping Lu Yueyun Hong Xuemin Wang Liang guo National key Laboratory of Crop Genetic Improvement Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhan 430070China Department of Biology University of MissouriSt.LouisMO 63121USA Donald Danforth Plant Science Center St.LouisMO 63132USA Yazhouwan National Laboratory Sanya 572025China

Phosphorus is a major nutrient vital for plant growth and development,with a substantial amount of cellular phosphorus being used for the biosynthesis of membrane ***,we report that NON-SPECIFIC PHOSPHOLIPASE C4(NPC4)in rapeseed(Brassica napus)releases phosphate from phospholipids to promote growth and seed yield,as plants with altered NPC4 levels showed significant changes in seed production under different phosphate *** regularly interspaced short palindromic repeat(CRISPR)/CRISPR-associated nuclease 9(Cas9)-mediated knockout of Bna NPC4 led to elevated accumulation of phospholipids and decreased growth,whereas overexpression(OE)of Bna NPC4resulted in lower phospholipid contents and increased plant growth and seed *** demonstrate that Bna NPC4 hydrolyzes phosphosphingolipids and phosphoglycerolipids in vitro,and plants with altered Bna NPC4 function displayed changes in their sphingolipid and glycerolipid contents in roots,with a greater change in glycerolipids than sphingolipids in leaves,particularly under phosphate deficiency *** addition,Bna NPC4-OE plants led to the upregulation of genes involved in lipid metabolism,phosphate release,and phosphate transport and an increase in free inorganic phosphate in *** results indicate that Bna NPC4 hydrolyzes phosphosphingolipids and phosphoglycerolipids in rapeseed to enhance phosphate release from membrane phospholipids and promote growth and seed production.

关键词： inorganic phosphorus non-specific phospholipase C4 phosphate deficiency phospholipids phosphorus use efficiency rapeseed

Berberine mitigates nonalcoholic hepatic steatosis by downregulating SIRT1-FoxO1-SREBP2 pathway for cholesterol synthesis

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Journal of Integrative Medicine 2021年第6期19卷 545-554页

作者： Meng-ya Shan ying Dai Xiao-dan Ren Jing Zheng ke-bin zhang bin Chen Jun Yan Zi-hui Xu Department of Integrative Medicine Xinqiao HospitalArmy Medical UniversityChongqing 400037China National Drug Clinical Trail Institution Xinqiao HospitalArmy Medical UniversityChongqing 400037China Department of Biochemistry and Molecular Biology Army Medical UniversityChongqing 400038China Department 1 Research Institute of Surgery&Daping HospitalArmy Medical Center of Chinese People’s Liberation ArmyArmy Medical UniversityChongqing 400042China

Objective:To investigate effects of berberine(BBR)on cholesterol synthesis in HepG2 cells with free fatty acid(FFA)-induced steatosis and to explore the underlying ***:A steatosis cell model was induced in HepG2 cell line fed with FFA(0.5 mmol/L,oleic acid:-palmitic acid=2:1),and then treated with three concentrations of BBR;cell viability was assessed with cell counting kit-8 *** accumulation in cells was observed through oil red O staining and total cholesterol(TC)content was detected by TC *** effects of BBR on cholesterol synthesis mediators were assessed by Western blotting and quantitative polymerase chain *** addition,both silent information regulator 1(SIRT1)and forkhead box transcription factor O1(FoxO1)inhibitors were employed for ***:FFA-induced steatosis was successfully established in HepG2 *** accumulation and TC content in BBR groups were significantly lower(Pbinding protein 2(SREBP2)and 3-hydroxy 3-methylglutaryl-Co A reductase levels(Pked the BBR-mediated therapeutic *** showed that the increased SIRT1 expression increased FoxO1 deacetylation,and promoted its nuclear ***:BBR can mitigate FFA-induced steatosis in HepG2 cells by activating SIRT1-FoxO1-SREBP2 signal *** may emerge as a potential drug candidate for treating nonalcoholic hepatic steatosis.

关键词： Berberine Nonalcoholic fatty liver disease Lipid metabolism SIRT1-FoxO1-SREBP2

A Novel Salicylic Acid Group-containing Ru(Ⅱ) Complex for Sensitizing Nanocrystalline TiO_2 Solar Cell

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Chemical Research in Chinese Universities 2002年第4期18卷 469-470页

作者： DONG bin yao Qiao-hong WANG ke-zhi JIN lin-pei HUANG Chun-hui Department of Chemistry Beijing Normal UniversityBeijing 100875P.R.China State key Laboratory of Rare Earth Materials Chemistry and Applications Peking UniversityBeijing 100871P.R.China

Polypyridine Ru ( Ⅱ) complexes have drawn special attention as the efficientsensitizer of photovoltaic cells based on nanocrystalline TiO_2 since Graetzel's pioneering work onthis subject. Ru(Ⅱ) complexes possess intense absorption in visible spectral region, excellentphotochemical stability, and strong emissive character. They can efficiently absorb visible light,pump an electron into the conduction bands of TiO_2 and accept an electron from the solution redoxcouple, and repeat the cycle. The extremely high yield of the conversion of solar light intoelectricity makes this kind of devices promising for practical application.

关键词： Ru(Ⅱ) complexes Salicylic acid Nanocrystalline TiO_2 solar cell

Dynamic compressive response of porcine muscle measured using a split Hopkinson bar system with a pair of PVDF force transducers

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Defence Technology（防务技术） 2023年第10期28卷 298-305页

作者： yao-ke Wen Liang Xu Ai-jun Chen Fang-dong Dong bin Qin School of Mechanical Engineering Nanjing University of Science and TechnologyNanjing210094China School of Science Nanjing University of Science and TechnologyNanjing210094China Science and Technology on Transient Impact Laboratory Beijing102202China

The classic metallic Split Hopkinson Pressure Bar(SHPB)cannot capture the transmitted signal accurately when measuring soft biological tissue,because of the very low wave impedance and strength of this *** the dynamic compressive response of porcine muscle has been investigated by using a modified *** forces on both ends of the sample measured using Polyvinylidene fluor(PVDF)transducers were applied to calculate the stress in the specimen instead of the strain gauge signal on the transmitted ***,a circular cardboard disk pulse shaper was applied for generating a suitable incident pulse to achieve stress equilibrium and constant strain rates in the ***,the dynamic mechanical properties of porcine muscle parallel and perpendicular to the fiber directions were measured,and the stress equilibrium process during loading was analyzed,as well as the inertia-induced extra stress being ***,quasi-static tests were conducted at two different strain rates to investigate the strain rate dependence using a universal material testing *** results show that the stress-strain curves are sensitive to strain rate in the two different loading *** compressive stress perpendicular to the fiber direction is stiffer than that parallel to the fiber *** addition,a strain rate-dependent constitutive model was developed based on the mechanical response of the muscle at different strain rates and fitted to the experimental *** results show that the overall fit is good,and the constitutive model could describe the muscle's dynamic mechanical properties.

关键词： PVDF Hopkinson bar Porcine muscle Dynamic mechanical properties Constitutive model

Quantification of SARS-CoV-2 antigen levels in the blood of patients with COVID-19

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Science China(Life Sciences) 2021年第7期64卷 1193-1196页

作者： bin Su Jiming Yin Xingguang lin Tiantian zhang Xiao yao ying Xu yao Lu Wenzhi Wang Kun Liu Jie zhang Liangzhi Xie Ronghua Jin yingmei Feng Beijing Youan Hospital Capital Medical UniversityBeijing 100069China Hangzhou Gbio Biotechnology Co. Ltd.Hangzhou 310000China Hangzhou Neoline Technology Co. Ltd.Hangzhou 310000China Quanterix Corporation 900 Middlesex TurnpikeBillericaMA 01821USA Guizhou Academy of Testing and Analysis Guiyang 550014China Wildlife Forensic Science Service Kunming 650203China Beijing key Laboratory of Monoclonal Antibody Research and Development Sino Biological Inc.Beijing 100176China Beijing Engineering Research Center of Protein and Antibody Sinocelltech Ltd.Beijing 100176China Cell Culture Engineering Center Chinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100005China

Dear Editor,Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)has caused the global outbreak of coronavirus disease 2019(COVID-19).By far,more than 35 million people had been infected by SARS-CoV-2,resulting in more than 1 million deaths *** is well recognized that SARSCoV-2 preferentially attacks pulmonary epithelial cells,leading to acute respiratory distress syndrome(ARDS).

关键词： acute respiratory distress

NF-κB/HDAC1/SREBP1c pathway mediates the inflammation signal in progression of hepatic steatosis

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Acta Pharmaceutica Sinica B 2020年第5期10卷 825-836页

作者： Yunwei guo Xiaoying zhang Zhiyun Zhao Hongyun Lu Bilun ke Xin Ye bin Wu Jianping Ye Department of Gastroenterology Third Affiliated HospitalSun Yat-sen UniversityGuangzhou 510630China Shanghai Diabetes Institute Shanghai Sixth People’s HospitalShanghai Jiao Tong UniversityShanghai 200233China Antioxidant and Gene Regulation Laboratory Pennington Biomedical Research CenterLouisiana State University SystemBaton RougeLA 70808USA

The transcription factor nuclear factor kappa B(NF-κB)is activated in hepatoctes in the pathogenesis of hepatic ***,the action mechanism of NF-κB remains to be established in the hepatic *** this study,the P50 subunit of NF-κB was found to promote the hepatic steatosis through regulation of histone deacetylase 1(HDAC1)in *** activity was supported by the phenotypes of P50 knockout(P50-KO)mice and P65 knockout(P65-KO)*** steatosis was reduced in the P50-KO mice,but not in the P65-KO *** reduction was a result of inhibition of HDAC1 activity in the P50-KO *** of Hdac1 gene led to suppression of hepatocyte steatosis in HepG2 cells.A decrease in sterol-regulatory element binding protein lc(SREBP1 c)protein was observed in the liver of P50-KO mice and in cell with Hdac1 *** decrease was associated with an increase in succinylation of SREBP1 c *** study suggests that P50 stabilizes HDAC1 to support the SREBP1 c activity in hepatic steatosis in the pathophysiological *** of this novel pathway in the P50-KO,but not the P65-KO mice,may account for the difference in hepatic phenotypes in the two lines of transgenic mice.

关键词： NF-KB HDAC1 SREBP1 Succinylation Hepatic steatosis