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Rare Metals 2021年第12期40卷 3543-3553页

作者： Yue Li dan-dan cheng Yan Luo Li-Xia Yang Henan International Joint Laboratory of Rare Earth Composite Materials School of Materials and Chemical EngineeringHenan University of EngineeringZhengzhou 451191China High Level Laboratory of Jiangxi Province for Persistent Pollutants Control Recycle and ReuseNanchang Hangkong UniversityNanchang 330063China

Coaxial Fe_(2)O_(3)/TiO_(2)nanotubes(Fe_(2)O_(3)/TiO_(2)NTs)were prepared by two anodic oxidation *** synthesized Fe_(2)O_(3)/TiO_(2)NTs catalysts showed high photocatalytic activity in heterogeneous photo-Fenton *** the help of Fe_(2)O_(3)/TiO_(2)NTs,4-nitrophenol(10 mg·L^(-1),50 ml),a typical electron-deficient organic contaminant,can be completely removed by adding only0.4 mmol·L^(-1)of H_(2)O_(2)under *** results clarify that the calculated position of Fe_(2)O_(3)/TiO_(2)NTs valence band is at 2.944 eV,its potential is higher than the potential of OH~-/·OH(2.800 eV),thereby ensuring the generation of·***,the transformation of photogenerated electrons from the conduction band of TiO_(2)to Fe_(2)O_(3)accelerates the reduction of Fe^(3+)to Fe^(2+).The unstable Fe^(2+)can be oxidized by H_(2)O_(2)to produce high yields of·***,both the coaxial heterojunction and fast Fe^(2+)/Fe^(3+)conversion provide abundant·OH to effective attack the electron-deficient benzene ring passivated by the nitro ***,surface-catalyzed degradation of 4-nitrophenol can be carried out step by *** work contributes a detailed understanding of charge transfer in semiconductor composites and degradation of organic contaminants.

关键词： Fe_(2)O_(3) TiO_(2) Coaxial Electron Deficient organic contaminant Photo-Fenton catalysis

Weighted Endpoint Estimates for Maximal Commutators Associated with the Sections

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Acta Mathematica Sinica,English Series 2010年第8期26卷 1463-1474页

作者： Jie cheng CHEN Yan dan ZHANG Department of Mathematics Zhejiang University Hangzhou 310027 P. R. China

We prove endpoint estimates for maximal commutators for a class of singular integral operators related to the real analysis of the Monge Ampere equation.

关键词： Weighted inequalities maximal commutators Monge-Ampere equation the sharp maximal function

Dynamics of land use change in a mining area:a case study of Nadowli District,Ghana

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Journal of Mountain Science 2016年第4期13卷 633-642页

作者： Laari Prosper BASOMMI GUAN Qing-feng cheng dan-dan Sudhir Kumar SINGH School of Environmental Studies China University of Geosciences Department of Environment and Resource Studies UDS School of Information Engineering China University of Geosciences National Engineering Research Center of GIS China University of Geosciences State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences K.Banerjee Centre of Atmospheric and Ocean Studies IIDSNehru Science CentreUniversity of Allahabad

In a developing country like Ghana, the study of land use and land cover change(LULCC) based on satellite imageries still remains a challenge due to cost, resolution and availability with less skilled man power. Existing researches are skewed towards the southerly part of Ghana thereby leaving the Northern sectors uncovered. The maximum likelihood classification(MLC) algorithm was employed for the LULCC between 2000 and 2014 in Nadowli: an area characterized by an upsurge in mining in the Northern belt of Ghana. A spatial-social approach was utilized combining both satellite imagery and socio economic data. Land use transition matrix, land use integrated index/degree indices was used to depict the characters of the change. A semi structured interview, pair wise ranking and key informant interviews were used to correlate the socio economic impact of the different LULC. Overall changes in the landscape showed an increase in bare ground by 19.22%, open savannah by 16.8% whereas closed savanna decreased by 50%. Land use change matrix showed increasing trends of bare ground at the expense of vegetation. The integrated land use index highlighted the bare ground and built up areas rising with a decreasing closed vegetation woodlot. Large farm size are shrinking whiles majority of the people view mining as the main socio economic activity affecting the environment and the reduction in vegetation. This study therefore provides a strategic guide and a baseline data for land use policy actors in the Northern belt of Ghana. This will aid in developing models for future land use change implications in surrounding areas where mining is on the rise.

关键词： Land use Mining Vegetation Satellite imagery Maximum likelihood algorithm

A new fluorescent probe with ultralow background fluorescence for imaging of endogenous cellular selenol under oxidative stress

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Chinese Chemical Letters 2017年第10期28卷 1987-1990页

作者： dan cheng Yue Pan Bin-cheng Yin Lin Yuan Xiao-Bing Zhang State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Hunan University Changsha 410082 China Lab of Biosystem and Microanaiysis State Key Laboratory of Bioreactor Engineering East China University of Sdence and Technology Shanghai 200237 China

A new fluorescent probe（Rhod-Sec） for selenol detection with ultralow background fluorescence have been developed in this paper, which showed a 380-fold off-on fluorescence response, and the nontoxic Rhod-Sec is well suitable for detecting and imaging both exogenous and endogenous selenol in living cells. It also can be applied to visualize the fluctuation of selenol in HepG2 cells through LPS-induced cells oxidation resistance.

关键词： Fluorescent probe Selenol Fluorescent imaging Oxidative stress

Assembly of peptide nanostructures with controllable sizes

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Nano Research 2024年第1期17卷 151-161页

作者： dan cheng Fan Jia Yun-Bao Jiang Vincent P.Conticello Tao Jiang The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen 361005China Department of Chemistry Emory UniversityAtlanta 30033USA

Controlled peptide assembly offers significant promise to develop synthetic supramolecular nanostructures to display material and biological properties that mimic protein assemblies in *** the progress in forming peptide nanostructures of various morphology,there exists a distinct gap between natural and synthetic assembly systems in terms of size *** nanostructures with a narrow size distribution that can be tuned over a wide range of length-scales is essential for applications that require precise spacing between *** approach provides the opportunity to correlate materials and biological properties of interest with assembly *** this review,we discuss representative endeavors over the past two decades for design of size-controllable peptide nanostructures using tunable building *** mechanisms for size control,e.g.,molecular frustration,template-directed peptide assembly,and multi-component peptide co-assembly,will also be *** also demonstrate the applicable scopes of these strategies and suggest potential future avenues for scientific advances in this field.

关键词： peptide assembly controllable size template multi-component

Modified constraint-induced movement therapy enhances cortical plasticity in a rat model of traumatic brain injury:a resting-state functional MRI study

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Neural Regeneration Research 2023年第2期18卷 410-415页

作者： cheng-cheng Sun Yu-Wen Zhang Xiang-Xin Xing Qi Yang Ling-Yun Cao Yu-Feng cheng Jing-Wang Zhao Shao-Ting Zhou dan-dan cheng Ye Zhang Xu-Yun Hua He Wang Dong-Sheng Xu Department of Rehabilitation Tongji HospitalSchool of MedicineTongji UniversityShanghaiChina Institute of Science and Technology for Brain-Inspired Intelligence Fudan UniversityShanghaiChina Center of Rehabilitation Medicine Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghaiChina Institute of Rehabilitation Medicine School of Rehabilitation ScienceShanghai University of Traditional Chinese MedicineShanghaiChina Engineering Research Center of Traditional Chinese Medicine Intelligent Rehabilitation Ministry of EducationShanghaiChina Department of Rehabilitation Shanghai East HospitalSchool of MedicineTongji UniversityShanghaiChina Department of Rehabilitation Tongren HospitalShanghai Jiao Tong University School of MedicineShanghaiChina Department of Rehabilitation Shanghai Jiao Tong University Affiliated Sixth People’s HospitalShanghaiChina Department of Traumatology and Orthopedics Yueyang HospitalShanghai University of Traditional Chinese MedicineShanghaiChina Department of Rehabilitation Yangzhi Rehabilitation HospitalTongji UniversityShanghaiChina Human Phenome Institute Fudan UniversityShanghaiChina Key Laboratory of Computational Neuroscience and Brain-Inspired Intelligence(Fudan University) Ministry of EducationShanghaiChina

Modified constraint-induced movement therapy(mCIMT)has shown beneficial effects on motor function improvement after brain injury,but the exact mechanism remains *** this study,amplitude of low frequency fluctuation(ALFF)metrics measured by resting-state functional magnetic resonance imaging was obtained to investigate the efficacy and mechanism of mCIMT in a control co rtical impact(CCI)rat model simulating traumatic brain *** 3 days after control co rtical impact model establishment,we found that the mean ALFF(mALFF)signals were decreased in the left motor cortex,somatosensory co rtex,insula cortex and the right motor co rtex,and were increased in the right corpus *** 3 weeks of an 8-hour daily mClMT treatment,the mALFF values were significantly increased in the bilateral hemispheres compared with those at 3 days *** mALFF signal valu es of left corpus callosum,left somatosensory cortex,right medial prefro ntal cortex,right motor co rtex,left postero dorsal hippocampus,left motor cortex,right corpus callosum,and right somatosensory cortex were increased in the mCIMT group compared with the control cortical impact ***,we identified brain regions with significantly decreased mALFF valu es at 3 days *** correlation coefficients with the right forelimb sliding score indicated that the improvement in motor function of the affected upper limb was associated with an increase in mALFF values in these brain *** findings suggest that functional co rtical plasticity changes after brain injury,and that mCIMT is an effective method to improve affected upper limb motor function by promoting bilateral hemispheric co rtical *** values correlate with behavio ral changes and can potentially be used as biomarkers to assess dynamic cortical plasticity after traumatic brain injury.

关键词： amplitude of low frequency fluctuation cortical plasticity functional magnetic resonance imaging modified constraint-induced movement therapy traumatic brain injury

Enzyme-free Electrochemical Detection of Hydrogen Peroxide Based on the Three-Dimensional Flower-like Cu-based Metal Organic Frameworks and MXene Nanosheets

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Chinese Journal of Chemistry 2021年第8期39卷 2181-2187页

作者： dan cheng Peipei Li Xiaohua Zhu Meiling Liu Youyu Zhang Yang Liu Key Laboratory of Chemical Biology&Traditional Chinese Medicine Research of Ministry of Education College of Chemistry and Chemical EngineeringHunan Normal UniversityChangshaHunan 410081China Key Laboratory of Bioorganic Phosphorus Chemistry&Chemical Biology of Ministry of Education Department of ChemistryTsinghua UniversityBeijing 100084China

Cu-based metal organic frameworks(MOFs)are regarded as promising sensing materials,which have abundant metal sites,large surface area and simple synthesis *** this work,a novel three-dimensional flower-like Cu-MOF was synthesized,which was combined with ultra-thin MXene nanosheets to construct a novel electrochemical sensor for H_(2)O_(2).

关键词： Metal-organic frameworks MXene Enzyme-free Sensors Hydrogen peroxide

Fermented Lentinus edodes extract containingα-glucan ameliorates concanavalin A-induced autoimmune hepatitis in mice

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Food Science and Human Wellness 2024年第4期13卷 2102-2115页

作者： Xin Hu dan cheng Yingxia Zhang Po Li Xiaoping Wu Junsheng Fu College of Life Sciences Fujian Agriculture and Forestry UniversityFuzhou 350002China Mycological Research Center Fujian Agriculture and Forestry UniversityFuzhou 350002China Shanghai Lithy One-Health Group Technology Co. Ltd.Shanghai 200235China

Autoimmune hepatitis(AIH)is a chronic inflammatory liver disease that threatens human health *** aim of this study was to detect the protective effect of a fermented Lentinus edodes extract containingα-glucan(FLA),in a concanavalin A(Con A)-induced AIH mouse model and to determine the underlying liver-protective *** results showed that compared with the model group,the level of proinflammatory cytokines in serum of FLA pretreated mice was significantly decreased,and the degree of inflammatory cell infiltration in liver,thymus and spleen was significantly *** polymerase chain reaction,immunohistochemistry,and Western blotting showed that FLA pre-treatment inhibited the Con A-induced apoptosis of hepatocytes by down-regulating the expression of BAX and up-regulating the expression of *** research found that FLA may improve liver injury in mice by activating NRF2 signaling pathway and inhibiting TRAF6/NF-κB signaling ***,FLA may improve liver injury in mice by shifting gut microbial composition to reduce the release of inflammatory cytokines in the serum and prevent the necrosis of ***-regulation of NRF2 signaling pathway,down-regulation of TRAF6/NF-κB signaling pathway,and an increase in the relative abundance of Lactobacillus_johnsonii and Ligilactobacillus_murinus play a protective role in liver.

关键词： Autoimmune hepatitis Concanavalin A Lentinus edodes TRAF6/NF-κB NRF2

Synthesis,Structure and Optical Properties of Cerium(Ⅲ) Triphosphate CeP_3O_9

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Chinese Journal of Structural Chemistry 2007年第3期26卷 338-346页

作者： TONG Hua-Nan ZHANG Hao cheng Wen-dan WU Dong-Sheng GONG Ya-Jing ZHU Jing HUANG Shu-Ping ZHAO dan State Key Laboratory of Structural Chemistry Fujian Institute of Research on theStructure of Matter The Chinese Academy of Sciences Fuzhou Fujian 350002 China

The single crystal and crystallized powder of triphosphate CeP3O9 have been synthesized, and the space group of CeP3O9has been determined to be C2221 with the cell parameters ofa = 8.6059, b = 11.2437, c = 7.3518 A, V= 711.4（3） A^3, Z= 4, D,. = 3.520 g/cm^3, F（000） = 700, R = 0.0377 and wR = 0.0930. The absorption and emission spectra have been measured, for which the strongest absorption and emission peaks are located at 280 and 320 nm, respectively. The density of state （DOS） and dielectric function have been calculated by the DFT method. The crystal is transparent provided the wavelength is larger than 341 nm, and the observed ultraviolet cut-off edge is at about 350 nm for a polycrystalline power sample. It is possible that the triphosphate CeP3O9 will become an ultraviolet emission material.

关键词： crystal structure phosphate optical properties density of states

Transcriptomic analysis identifies the S100 calcium-binding protein β subunit(S100B)and intercellular adhesion molecule-1(ICAM-1)as potential diagnostic biomarkers for acute cerebral infarction

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Genes & Diseases 2024年第1期11卷 46-48页

作者： dan cheng Yushuo Wang Jingna Li Yulan Yao Simiao Zhang Yunliang Wang Department of Neurology Second Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan 450014China School of Medicine Medical Sciences and Nutrition University of AberdeenAberdeen AB252ZDUK Department of Neurology The 960th Hospital of PLAZiboShandong 255300China

Due to its high mortality,disability,and recurrence rates,cerebral infarction has a serious impact on the economy and is a physical and psychological burden on patients.1 There is a huge unmet medical need for biomarkers to predict acute cerebral *** have shown that the ischemic damage to neurons,myelin,and glia caused by a stroke leads to the release of the S100 calcium-binding protein beta subunit(S100B)through the blood-brain barrier into the systemic circulation,resulting in an increase in the level of S100B in the peripheral blood.

关键词： S100B cerebral infarction