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Chinese Journal of Structural Chemistry 2007年第5期26卷 572-574页

作者： TAN ting-feng Department of Materials Science ＆ Engineering Tianjin Institute of Urban Construction Tianjin 300384 China

The title compound 2 （C30H27N3O, Mr = 445.55） has been synthesized and its structure was determined by X-ray crystallography method. The crystal is of monoclinic, space group P21/c with a = 17.520（15）, b = 8.640（7）, c = 15.439（13） A, β = 98.642（14）°, V = 2310（3） 3, Dc = 1.281 g/cm^3, μ = 0.780 mm^-1, F（000） = 944, Z = 4, the final R = 0.0671 and wR = 0.1790 for 1952 observed reflections with Ⅰ 〉 2σ（Ⅰ）. X-ray analysis revealed that the interatomic distance of C（20）O（1） is 1.464（4） , longer than that of the normal C-O bond （1.41～1.43 A） in the six-membered heterocycle, but this kind of change coincides with other spiro compounds. The six-membered heterocycle containing spiro Csp3-O is nonplanar. The UV-vis spectra of the title compound in polymer films showed that it exhibits excellent photochromic property.

关键词： spirooxazine crystal structure photochromism

Regulating the electrochemical activity of Fe-Mn-Cu-based layer oxides as cathode materials for high-performance Na-ion battery

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Journal of Energy Chemistry 2023年第5期80卷 603-613,I0014页

作者： ting-ting Wei Xu Liu Shao-Jie Yang Peng-Fei Wang ting-feng Yi School of Materials Science and Engineering Northeastern UniversityShenyang 110819LiaoningChina Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province School of Resources and MaterialsNortheastern University at Qinhuangdao066004HebeiChina

Fe-Mn based layer oxides cathode materials have attracted widespread attention as a potential candidate for sodium-ion batteries(SIBs)owing to the earth abundance,cost-effectiveness and acceptable specific ***,the irreversible phase transition often brings rapid capacity decay,which seriously hinders the practical application in large-scale energy ***,we design a nickel-doped Na_(0.70)Fe_(0.10)Cu_(0.20)Ni_(0.05)Mn_(0.65)O_(2)(NFCNM-0.05)cathode material of SIBs with activated anionic redox reaction,and then inhibit the harmful phase *** ex-situ X-ray diffraction patterns demonstrate the NFCNM-0.05 always keeps the P2 phase during the sodiation/desodiation process,indicating a high structure *** ex-situ X-ray photoelectron spectroscopy implies the redox reactions between O2-and O-occur in the charging process,which offers extra specific ***,the NFCNM-0.05 electrode delivers a high initial discharge capacity of 148 mA h g-1and remains a prominent cycling stability with an excellent capacity retention of 95.9%after 200 cycles at 1 *** addition,the electrochemical impedance spectroscopy and galvanostatic intermittent titration technique show the NFCNM-0.05 electrode possesses fast ion diffusion ability,which is beneficial for the enhancement of rate *** at 10 C,the NFCNM-0.05 can offer a reversible discharge capacity of 81 mA h *** calculation demonstrates the doping of appropriate amount of Ni ions is benefit for the enhancement of the electrochemical performance of the layer *** work provides an effective strategy to enhance the electrochemical performance of Fe-Mn based cathode materials of SIBs.

关键词： Fe-Mn-Cu based oxide Nickel-ion doping Reversible phase transition Cycling stability

Advancement of technology towards high-performance non-aqueous aluminum-ion batteries

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Journal of Energy Chemistry 2021年第6期30卷 169-188,I0005页

作者： ting-ting Wei Panpan Peng Si-Yu Qi Yan-Rong Zhu ting-feng Yi School of Materials Science and Engineering Northeastern UniversityShenyang 110819LiaoningChina School of Resources and Materials Northeastern University at QinhuangdaoQinhuangdao 066004HebeiChina Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province Qinhuangdao 066004HebeiChina

Al-ion batteries(AIBs) have been identified as one of the most hopeful energy storage systems after Li-ion batteries on account for the ultrahigh volumetric capacity,high safety and low cost from the rich abundance of ***,some inevitable shortcomings,such as the formation of passive oxide film,hydrogen side reactions and anode corrosion,finally limit the large-scale application of aqueous *** nonaqueous AIBs have been considered as one of most hopeful alternatives for high-powered electrochemical energy storage ***,various technical and scientific obstacles should be resolved because nonaqueous AIBs are still *** significant efforts have aimed to resolve these issues towards large-scale applications,and some important advancement has been *** the present review,we mainly intended to offer an overview of non-aqueous AIBs systems,and we comprehensively reviewed the recent research advancement of the cathode materials,anode materials electrolyte and collectors as well as the fundamental understanding of the functional *** addition,we have also analyzed several technical challenges and summarized the strategies used for overcoming the challenges in improving the electrochemical properties,including morphology control,surface engineering,doping and construction of composite electrodes as well as the charge storage mechanisms of the materials with different crystal *** last,future research orientation and development prospect of the AIBs are proposed.

关键词： Al-ion batteries Electrode Electrolyte Collector Electrochemical performance

Electron acceleration by Langmuir turbulence in ionospheric heating

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Earth and Planetary Physics 2022年第6期6卷 529-535页

作者： MoRan Liu Chen Zhou ting feng Department of Space Physics School of Electronic InformationWuhan UniversityWuhan 430072China

In this study,we investigate the generation of parametric decay instability,Langmuir turbulence formation,and electron acceleration in ionospheric heating via a two-fluid model using the Fokker-Planck equation and Vlasov-Poisson system *** simulation results of both the magnetofluid model and the kinetic model demonstrate the dynamics of electron ***,the results of the Vlasov-Poisson simulations suggest the formation of electron holes in phase space at the same spatial scale as the Langmuir wave,which are shown to be related to electron *** addition,electron acceleration is enhanced through the extension of the wavenumber spectrum caused by strong Langmuir turbulence,leading to more electron holes in phase space.

关键词： electron acceleration Langmuir turbulence electron holes parametric decay instability

Clinical significance of changes in the Th17/Treg ratio in autoimmune liver disease

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World Journal of Gastroenterology 2017年第21期23卷 3832-3838页

作者： ting-ting feng ting Zou Xin Wang Wei-feng Zhao Ai-Lan Qin Department of Infectious Diseases the First Affiliated Hospital of Soochow University

AIM To investigate the levels, ratios, and clinical significance of T helper 17(Th17) cells and regulatory T(Treg) cells in the peripheral blood of patients with autoimmune liver disease(AILD). METHODS F o r t y-t w o A I L D p a t i e n t s w e r e i n c l u d e d i n t h e experimental group(group E), and 11 healthy subjects were recruited as the control group(group C). Flow cytometry was performed to determine the percentages of Th17 and Treg cells in peripheral blood lymphocytes. Furthermore, a range of biochemical indices was measured simultaneously in the blood of group E patients. RESULTS The percentage of Th17 cells and the Th17/Treg ratio were higher in group E than in group C(P < 0.01), whereas the percentage of Tregs was lower in the group E patients(P < 0.05). Patients in group E who were admitted with AILD in the active stage showed significantly higher Th17 percentages and Th17/Treg ratios than those measured in patients with AILD in remission(P < 0.05). In addition, among patients with AILD in the active stage, individuals that remained unhealed after hospitalization showed significantly higher baseline values of the Th17 percentage and the Th17/Treg ratio than those detected in patients who improved after treatment(P < 0.05). The results suggested that imbalance in the Th17/Treg ratio plays an important role in the pathogenesis and development of *** A high Th17/Treg ratio appears to predict poor shortterm prognosis in patients with AILD in the active stage.

关键词： Autoimmune liver disease Helper T cell 17 Regulatory T cells Short-term prognosis

Rational construction and decoration of Li_(5)Cr_(7)Ti_(6)O_(25)@Cnanofibers as stable lithium storage materials

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Journal of Energy Chemistry 2022年第8期31卷 400-410,I0011页

作者： ting-ting Wei Panpan Peng Yu-Rui Ji Yan-Rong Zhu ting-feng Yi Ying Xie School of Materials Science and Engineering Northeastern UniversityShenyang 110819LiaoningChina Key Laboratory of Functional Inorganic Material Chemistry Ministry of EducationSchool of Chemistry and Materials ScienceHeilongjiang UniversityHarbin 150080HeilongjiangChina School of Resources and Materials Northeastern University at QinhuangdaoQinhuangdao 066004HebeiChina Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province Qinhuangdao 066004HebeiChina

Li_(5)Cr_(7)Ti_(6)O_(25) is regarded as a promising anode material for Li-ion batteries(LIBs)because of its low cost and high theoretical ***,the inherently poor conductivity significantly limits the enhancement of its rate capability and cycling stability,especially at high current *** this work,we construct one-dimensional Li_(5)Cr_(7)Ti_(6)O_(25)/C nanofibers by electrospinning method to enhance the kinetic,which realizes high cycling *** coating enhances the structure stability,insertion/extraction reversibility of Li-ions and electrochemical reaction activity,and facilitates the transfer of *** from the unique architecture and component,the Li_(5)Cr_(7)Ti_(6)O_(25)/C(6.6 wt%)nanofiber shows an excellent rate capability with a reversible de-lithiation capacity of 370.8,290.6,269.2,254.3 and 244.9 m Ah g^(-1) at 200,300,500,800 and 1000 m A g^(-1),*** at a higher current density of 1 A g^(-1),Li_(5)Cr_(7)Ti_(6)O_(25)/C(6.6 wt%)nanofiber shows high cycling stability with an initial de-lithiation capacity of 237.8 m Ah g^(-1) and a capacity retention rate of about 84%after 500 *** density functional theory calculation result confirms that the introduction of carbon on the surface of Li_(5)Cr_(7)Ti_(6)O_(25) changes the total density of states of Li_(5)Cr_(7)Ti_(6)O_(25),and thus improves electronic conductivity of the composite,resulting in a good electrochemical performance of Li_(5)Cr_(7)Ti_(6)O_(25)/C ***_(5)Cr_(7)Ti_(6)O_(25)/C nanofibers indicate a great potential as an anode material for the next generation of high-performance LIBs.

关键词： Lithium-ion battery Anode Li_(5)Cr_(7)Ti_(6)O_(25) Electrospinning Nanofibers

Ground behaviour analysis,support system design and construction strategies in deep hard rock mining-Justified in Western Australian’s mines

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Journal of Rock Mechanics and Geotechnical Engineering 2020年第1期12卷 1-20页

作者： Behrooz Rahimi Mostafa Sharifzadeh Xia-ting feng Department of Mining and Metallurgical Engineering Western Australian School of Mines:MineralsEnergy and Chemical Engineering(WASM-MECE)Curtin UniversityKalgoorlieWM6430Australia Key Laboratory of Ministry of Education for Safe Mining of Deep Metal Mines Northeastern UniversityShenyang110819China

Development of deep underground mining projects is crucial for optimum extraction of mineral *** main challenges at great depth are high rock stress levels,seismic events,large-scale deformation,sudden failures and high temperatures that may cause abrupt and unpredictable instability and collapse over a large *** this paper,a ground control and management strategy was presented corresponding to the three stages of projects:strategic design,tactical design and operational *** design is results in preparing a broad plan and primary design for mining *** tactical design is to provide detail design such as stabilisation *** design stage is related to monitoring and updating design *** most effective ground control strategies in this stage are maintenance,rehabilitation,monitoring and contingency ***,a new procedure for design of ground support systems for deep and hard rock was *** main principles are:static and/or dynamic loading types,determination of loading sources,characterisation of geological conditions and the effects of orientation of major structures with openings,estimation of ground loading factor,identification of potential primary and secondary failures,utilisation of appropriate design analysis methods,estimation of depth failure,calculation of the static and/or dynamic demand ground support capacity,and selection of surface and reinforcement *** force is the dominant loading force in low-level *** high stress level failure mechanism becomes more complex in rock mass *** this condition,a variety of factors such as release of stored energy due to seismic events,stress concentration,and major structures influence on ground behaviour and judgement are very *** key rock engineering schemes to minimise the risk of failures in high-stress levels at great depth involve depressurisation and quality control of ***

关键词： Ground management Support system design Sequential excavation Stress management Geotechnical monitoring Deep underground mines

Differential Proteomics Analysis of Endometriosis in Blood Stasis Syndrome

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Chinese Journal of Integrative Medicine 2018年第12期24卷 925-929页

作者： WEN Yi WANG Yan feng ting-ting WEI Shao-bin Gynecology Department of Traditional Chinese Medicine Clinical Medical CollegeChengdu University of Traditional Chinese Medicine

Objective： To investigate the innate characters of 3 endometriosis （EMT） syndromes, blood stasis （BS）, qi stagnation and blood stasis （QSBS） as well as Shen （Kidney） deficiency and blood stasis （KDBS） in terms of proteomics, lay a molecular biological basis for the differentiation of various blood stasis syndromes of EMT, establish a EMT microscopic syndrome differentiation and diagnosis system in terms of proteomics, discover the evolution principles and therapeutic targets of these EMT syndromes, and search their significant molecular markers and genetic intervention targets. Methods： Six specimens from the ectopic and entopic endometrium tissues of patients with EMT in each syndrome, BS, QSBS as well as KDBS, in the early proliferative phase of the menstrual cycle, and 6 specimens from normal endometrium tissues in the early proliferative phase of the menstrual cycle were obtained. Three groups were formed in each syndrome by mixing two random specimens in equal amount, and then their respective two-dimensional electrophoresis graphs were obtained after total protein extraction. Finally, the detected differences in protein expression were identified through matrix-assisted laser desorption Ionization-time of flight mass spectrometry （MALDI-TOF/MS） and protein database. Results： The results of differential proteins expressed in each syndrome were shown as follows： BS syndrome had 2 differential proteins in entopic endometrium and 1 differential protein in ectopic endometrium; KDBS syndrome had 3 in entopic endometrium and 3 in ectopic endometrium; and QSBS syndrome had 3 in entopic endometrium and 4 in ectopic endometrium. It was found out that annexin was highly expressed in both entopic and ectopic endometrium of KDBS syndrome; and myosin light chain 3 was highly expressed in both entopic and ectopic endometrium of QSBS syndrome. Conclusion： There are differential protein expressions among the 3 EMT syndromes, which might be the inner origin of syndrome characte

关键词： endometriosis blood stasis syndrome proteomics two-dimensional electrophoresis mass spectrum

Towards high-performance anodes:Design and construction of cobalt-based sulfide materials for sodium-ion batteries

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Journal of Energy Chemistry 2021年第3期30卷 680-698页

作者： Baole Guan Si-Yu Qi Ying Li ting Sun Yan-Guo Liu ting-feng Yi Department of Chemistry College of SciencesNortheastern UniversityShenyang 110819LiaoningChina School of Resources and Materials Northeastern University at QinhuangdaoQinhuangdao 066004HebeiChina Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province Qinhuangdao 066004HebeiChina Institute of Advanced Electrochemical Energy&School of Materials Science and Engineering Xi’an University of TechnologyXi’an 710048ShaanxiChina

Sodium-ion batteries are increasingly becoming important in the energy storage field owing to their low cost and high natural abundance of ***-based sulfide materials have been extensively studied as anode materials owing to their remarkable Na storage ***,the application of cobalt-based sulfides is hampered by their serious capacity degradation and unsatisfactory cycling stability due to severe structural changes during ***,it is important to comprehensively summarize advances in the understanding and modification of cobalt-based sulfides from various *** the present review,recent advances on various cobalt-based sulfides,such as CoS,CoS_(2),Co_(3)S_(4),Co_(9)S_(8),NiCo_(2)S_(4),CUCo_(2)S_(4),and SnCoS_(4),are outlined with particular attention paid to strategies that improve their sodium storage ***,the mechanisms of charge storage are ***,the key barriers to their extensive application and corresponding strategies for designing high-performance cobalt-based sulfide anode materials are ***,key developments are summarized and future research directions are proposed based on recent advancements,aiming to offer possible fascinating strategies for the future promotion of cobalt-based sulfides as anode materials applied in sodium-ion batteries.

关键词： Cobalt sulfides Sodium-ion battery Anode material Nanoengineering

Methods to detect a vian influenza virus for food safety surveillance

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Journal of Integrative Agriculture 2015年第11期14卷 2296-2308页

作者： SHI Ping Shu Geng LI ting-ting LI Yu-shui feng ting WU Hua-nan School of Environment and Energy Peking University Shenzhen Graduate School Sino-US Joint Food Safety Research Center Northwest A&F University Department of Plant Science University of California

Avian influenza （AI）, caused by the influenza A virus, has been a global concern for public health. AI outbreaks not only impact the poultry production, but also give rise to a risk in food safety caused by viral contamination of poultry products in the food supply chain. Distinctions in AI outbreak between strains H5N1 and H7N9 indicate that early detection of the AI virus in poultry is crucial for the effective warning and control of AI to ensure food safety. Therefore, the establishment of a poultry surveillance system for food safety by early detection is urgent and critical. In this article, methods to detect AI virus, including current methods recommended by the World Health Organization （WHO） and the World Organisation for Animal Health （Office International des Epizooties, OIE） and novel techniques not commonly used or commercialized are reviewed and evaluated for feasibility of use in the poultry surveillance system. Conventional methods usually applied for the purpose of AI diagnosis face some practical challenges to establishing a comprehensive poultry surveillance program in the poultry supply chain. Diverse development of new technologies can meet the specific requirements of AI virus detection in various stages or scenarios throughout the poultry supply chain where onsite, rapid and ultrasensitive methods are emphasized. Systematic approaches or integrated methods ought to be employed according to the application scenarios at every stage of the poultry supply chain to prevent AI outbreaks.

关键词： avian influenza food safety detection methods poultry supply chain surveillance system