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Synthesis and Crystal Structure of 4,4′-Diamino-N,N′-diethyl Bisbenzenesulfamide

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Chinese Journal of Structural Chemistry 2007年第2期26卷 177-183页

作者： WANG Li-Min PAN xiao-juan fan Zhao-Yu YANG Liu-Bo LIU Lian TIAN He Laboratory for Advanced Materials Institute of Fine ChemicalsEast China University of Science and Technology Shanghai 200237 China

A new compound of 4,4＇-diamino-N,V＇-diethyl bisbenzenesulfamide （C18H26N4O4S2, Fw = 426.55） has been synthesized and its structure was determined by X-ray crystallography method. The crystal belongs to the monoclinic system, space group P21/c with a = 10.0623（9）, b = 13.6759（13）, c =15.5309（14） A, β = 100.482（2）°, V= 2101.6（3） A^3, Dc = 1.348 g/cm^3, F（000） = 904, μ = 0.285 mm^-1, Z = 4, the final R = 0.0512 and wR = 0.1363 for 3485 observed reflections with I 〉 2σ（I）. The structure of the title compound is pseudo secondary axisymmetric, and the two sulfamide-groups show distorted tetrahedral configurations.

关键词： 4,4'-diamino-N,V'-diethyl bisbenzenesulfamide synthesis crystal structure

Optical coherence tomography characteristics of responses to intravitreal bevacizumab in idiopathic choroidal neovascularization

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International Journal of Ophthalmology(English edition) 2016年第2期9卷 271-274页

作者： Syed Nasir Ali Shah Qian-Yan Kang xiao-juan fan Yue-Ming Sun Department of Ophthalmology the First Affiliated Hospital of Xi'an Jiaotong University

AIM： To investigate factors associated with responses to intravitreal bevacizumab （IVB） in naive idiopathic choroidal neovascularization （iCNV） by high domain optical coherence tomography （OCT）. METHODS： We retrospectively reviewed clinical data of 40 eyes of iCNV patients who received a single or multiple IVB on an as-needed basis （1.25 mg/0.05 mL）. One month after the first injection, subretinal fluid （SRF） volume was evaluated and the eyes were divided into 3 groups based on responses to IVB. Good, moderate, and poor responses were defined as 61%-99%, 30%-60%, and 〈30% resolution of SRF on OCT after IVB in iCNV, respectively. OCT findings were analyzed to find factors associated with difference in response levels. Comparisons were made using Wilcoxon＇s matched- pairs signed-rank test, the Mann-Whitney U test for means with continuous data and Fisher＇s exact test for categorical data. RESULTS： The mean number of IVB was 1.28±1.50 and mean follow up time was 3.60±1.20mo. At postoperative 1too, there were 8 （20%） eyes in good response, 20 （50%） in moderate response and 12 （30%） eyes in poor response group and at last visit there were 28 good responders （70%）, 8 （20%） moderate responders and 4 （10%） poor responders. Statistically significant difference was detected between good responders and non good responders in choroidal neovessels thickness （P=0.029）, SRF height （P=0.049） and SRF volume （P=0.031） at post treatment 1 mo. CONCLUSION： OCT is a valuable diagnostic tool. Decrease in choroidal neovessels thickness, SRF height and volume predicts favorable response of iCNV to IVB therapy.

关键词： bevacizumab idiopathic choroidalneovascularisation optical coherence tomography subretinalfluid

Efficient and selective upcycling of waste polylactic acid into acetate using nickel selenide

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Journal of Energy Chemistry 2024年第10期97卷 575-584页

作者： Bing Lan Yinfang Chen Nantian xiao Na Liu Chao juan Chuan Xia fan Zhang National Engineering Laboratory of Eco-Friendly Polymeric Materials College of Chemistry Sichuan University School of Materials and Energy University of Electronic Science and Technology of China

The conversion of waste polylactic acid（PLA） plastics into high-value-added chemicals through electrochemical methods is a promising and sustainable ***,developing efficient and highly selective catalysts for lactic acid oxidation reaction（LAOR） and understanding the reaction process are ***,we report the electrooxidation of waste PLA to acetate at a high current density of 100 mA cm-2 with high Faraday efficiency（～95%） and excellent stability（>100 h） over a nickel selenide nanosheet *** addition,a total Faraday efficiency of up to 190% was achieved for carboxylic acids,including acetic acid and formic acid,by coupling with the cathodic CO2reduction *** situ experimental results and theoretical simulations revealed that the catalytic activity center of LAOR was dynamically formed NiOOH species,and the surface-adsorbed SeOxspecies accelerated the formation of Ni3+species,thus promoting catalytic *** mechanism of lactic acid electrooxidation was further *** acid was dehydrogenated to produce pyruvate first and then formed CH3CO due to preferential C-C bond cleavage,resulting in the presence of *** work demonstrated a sustainable method for recycling waste PLA and CO2into high-value-added products.

关键词： Acetic acid Lactic acid electro-oxidation Poly (lactic acid) Waste plastic upcycling

A brand new green coating technology for realizing the regulation of spherical propellant energy release process

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Defence Technology（防务技术） 2024年第6期36卷 78-94页

作者： Wenhao fan Yajun Ding Zhongliang xiao School of Chemistry and Chemical Engineering Nanjing University of Science and TechnologyNanjing210094China Key Laboratory of Special Energy Materials Nanjing University of Science and TechnologyMinistry of EducationNanjing 210094China

To achieve the controllable release of energy of nitrocellulose-based propellants,this paper combines the cellulose-based nanocomposites aqueous coating(Surelease®-NC)with fluidized bed coating equipment to successfully prepare the coated spherical propellant for the first *** effects of fluidized bed coating temperature,air velocity,flow speed and atomization pressure on the adhesion rate,coating integrity and coating uniformity of the coated spherical propellant were investigated,and the preparation of coated spherical propellant with homogeneous size and structural integrity was achieved for the first *** microscopic morphology,chemical structure,water vapor adsorption behavior,combustion performance,and ageing resistance property of the coated spherical propellant were systematically investigated by,Fourier transforms infrared spectroscopy(FTIR),Micro confocal raman spectrometer,field scanning electron microscopy(SEM),dynamic vapor adsorption techniques,and closed bomb test,confirming the surface core-shell structure and the tightly bonded interfacial structure of coated spherical ***,the coated spherical propellant has good hygroscopic,excellent progressive burning and long storage stability.

关键词： Nanocomposites aqueous coating Fluidized bed coating equipment Coated spherical propellant Controllable release of energy Long storage stability

Facile preparation of Fe/N-based biomass porous carbon composite towards enhancing the thermal decomposition of DAP-4

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Defence Technology（防务技术） 2024年第1期31卷 288-294页

作者： Er-hai An xiao-xia Li Cun-juan Yu Ying-xin Tan Zi-jun fan Qing-xia Li Peng Deng Xiong Cao School of Environment and Safety Engineering North University of ChinaTaiyuan030051PR China College of Safety and Emergency Management Engineering Taiyuan University of Science and TechnologyTaiyuan030024PR China

Fe/N-based biomass porous carbon composite(Fe/N-p Carbon) was prepared by a facile high-temperature carbonization method from biomass,and the effect of Fe/N-p Carbon on the thermal decomposition of energetic molecular perovskite-based material DAP-4 was *** porous carbonaceous materials was considered as the micro/nano support layers for in situ deposition of Fe/N ***/Np Carbon was prepared simply by the high-temperature carbonization *** was found that it showed the inherent catalysis properties for thermal decomposition of *** heat release of DAP-4/Fe/N-p Carbon by DSC curves tested had increased slightly,compared from DAP-4/Fe/N-p *** decomposition temperature peak of DAP-4 at the presence of Fe/N-p Carbon had reduced by 79°C from384.4°C(pure DAP-4) to 305.4°C(DAP-4/Fe/N-p Carbon-3).The apparent activation energy of DAP-4thermal decomposition also had decreased by 29.1 J/*** possible catalytic decomposition mechanism of DAP-4 with Fe/N-p Carbon was proposed.

关键词： Biomass materials Porous carbon DAP-4 Thermal decomposition Facile method

A systematic survey of PRMT interactomes reveals the key roles of arginine methylation in the global control of RNA splicing and translation

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Science Bulletin 2021年第13期66卷 1342-1357,M0004页

作者： Huan-Huan Wei xiao-juan fan Yue Hu xiao-Xu Tian Meng Guo Miao-Wei Mao Zhao-Yuan fang Ping Wu Shuai-Xin Gao Chao Peng Yun Yang Zefeng Wang CAS Key Laboratory of Computational Biology Bio-Med Big Data CenterShanghai Institute of Nutrition and HealthCAS Center for Excellence in Molecular Cell ScienceUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai 200031China National Facility for Protein Science in Shanghai Zhang-Jiang LabShanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210China Xijing Hospital of Digestive Diseases Fourth Military Medical UniversityXi’an 710000China

Thousands of proteins undergo arginine methylation,a widespread post-translational modification catalyzed by several protein arginine methyltransferases(PRMTs).However,global understanding of their biological functions is limited due to the lack of a complete picture of the catalytic network for each ***,we systematically identified interacting proteins for all human PRMTs and demonstrated their functional importance in mRNA splicing and *** demonstrated significant overlapping of interactomes of human PRMTs with the known methylarginine-containing *** PRMTs are functionally redundant with a high degree of overlap in their substrates and high similarities between their putative methylation ***,RNA-binding proteins involved in regulating RNA splicing and translation contain highly enriched arginine methylation ***,inhibition of PRMTs globally alternates alternative splicing(AS)and suppresses *** particular,ribosomal proteins are extensively modified with methylarginine,and mutations in their methylation sites suppress ribosome assembly,translation,and eventually cell ***,our study provides a global view of different PRMT networks and uncovers critical functions of arginine methylation in regulating mRNA splicing and translation.

关键词： Post-translational modification Protein arginine methyltransferase RNA-binding protein Ribosomal proteins Alternative splicing mRNA translation

Preparation of three-dimensional nanoporous copper foil with high specific surface area

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Rare Metals 2024年第7期43卷 3430-3437页

作者： Ning Song Li-juan Wang Jun-Feng Wang juan Liao Jian Huang Peng-Kang Du Yun-Zhi Tang Yu-Hui Tan xiao-Wei fan Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry School of Chemistry and Chemical EngineeringJiangxi University of Science and TechnologyGanzhou 341000China

The porous copper foil material has the advantages of ultralight and ultra-thin,and can prevent dangers such as thermal runaway and battery fire,which could be regarded as a prospective material for lithium battery **... 详细信息

关键词： copper porous dimensional

The New Methods for Characterization of Molecular Weight of Supramolecular Polymers

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Chinese Journal of Polymer Science 2024年第10期42卷 1403-1413页

作者： Hui Liu Rui Hu Zi-Qing Hu xiao-fan Ji Key Laboratory of Materials Chemistry for Energy Conversion and Storage Ministry of Education Hubei Key Laboratory of Materials Chemistry and Service FailureHubei Engineering Research Center for Biomaterials and Medical Protective Materials School of Chemistry and Chemical Engineering Huazhong University of Science and Technology

Supramolecular polymers, as a type of dynamic polymers, are subordinate to the interdisciplinary field of polymer chemistry and supramolecular chemistry, whose development has greatly promoted the prosperity of new materials. Notably, molecular weight is one of the most important parameters of supramolecular polymers, which affects the physical/chemical properties and processing applications of *** new methods for characterizing the molecular weight of supramolecular polymers is crucial for advancing the development of supramolecular polymers. In this review, we elaborate and summarize three strategies for characterizing the molecular weight of supramolecular polymers that recently reported by our research group according to the characteristics of supramolecular polymers, including (1) the molecular weight distinction corresponding to variable fluorescence colors,(2) matching different molecular weights with different fluorescence lifetime,(3) transforming supramolecular polymers into mechanically interlocked polymers or covalent polymers. Besides, we also discuss the limitations of current methods for characterizing supramolecular polymers. We hope that this review can promote the development of supramolecular polymers and significantly inspire to exploit new methods to characterizing molecular weight of supramolecular polymers.

关键词： Dynamic polymers Mechanically interlocked polymers Molecular weight Self-assembly Supramolecular polymers

Causal relationship between feelings and cognitive decline:An univariable and multivariable Mendelian randomization study

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World Journal of Psychiatry 2024年第3期14卷 421-433页

作者： juan Liu Lin Liu Yi-Xin Hu Jian-Hua Li xiao Zou Hao-Yun Zhang Li fan Department of Cardiology The Second Medical Center&National Clinical Research Center for Geriatric DiseasesChinese PLA General HospitalBeijing 100853China Department of Pulmonary and Critical Care Medicine The Second Medical Center&National Clinical Research Center for Geriatric DiseasesChinese PLA General HospitalBeijing 100853China The Fourth Department of Geriatric Health Care The Second Medical Center&National Clinical Research Center for Geriatric DiseasesChinese PLA General HospitalBeijing 100853China Department of Anesthesiology First Medical Center of Chinese PLA General HospitalBeijing 100853China

BACKGROUND While the impact of depression on cognition is well-documented,the relationship between feelings and cognition has received limited *** To explore the potential association between feelings and cognition with a twosample Mendelian randomization(MR)*** Our analysis utilized genome-wide association data on various feelings(fed-up feelings,n=453071;worrier/anxious feelings,n=450765;guilty feelings,n=45-0704;nervous feelings,n=450700;sensitivity/hurt feelings,n=449419;miserableness,n=454982;loneliness/isolation,n=455364;happiness,n=152348)in the European population and their impact on cognitive functions(intelligence,n=269867).Conducting a univariable MR(UVMR)analysis to assess the relationship between feelings and *** this analysis,we applied the inverse variance weighting(IVW),weighted median,and MR Egger ***,we performed sensitivity analysis(leave-one-out analysis),assessed heterogeneity(using MR-PRESSO and Cochran’s Q test),and conducted multiple validity test(employing MR-Egger regression).Subsequently,a multivariable MR(MVMR)analysis was employed to examine the impact of feelings on *** served as the primary method in the multivariable analysis,complemented by median-based and MR-Egger *** In this study,UVMR indicated that sensitivity/hurt feelings may have a negative causal effect on cognition(OR=0.63,95%CI:0.43-0.92,P=0.017).After adjustment of other feelings using MVMR,a direct adverse causal effect on cognition was observed(OR_(MVMR)=0.39,95%CI:0.17-0.90,P_(MVMR)=0.027).While a potential increased risk of cognitive decline was observed for fed-up feelings in the UVMR analysis(ORUVMR=0.64,95%CI:0.42-0.97,PUVMR=0.037),this effect disappeared after adjusting for other feelings(OR_(MVMR)=1.42,95%CI:0.43-4.74,P_(MVMR)=0.569).These findings were generally consistent across MV-IVW,median-based,and MR-Egger ***-Egger regression revealed pleiotropy in the impact of worrier/anxious

关键词： Mendelian randomization analysis Feelings Cognition Intelligence