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T cell interactions with microglia in immune-inflammatory processes of ischemic stroke
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作者 Yuxiao Zheng Zilin Ren +8 位作者 Ying Liu Juntang Yan Congai Chen Yanhui He Yuyu Shi Fafeng Cheng Qingguo Wang Changxiang Li Xueqian Wang 《Neural Regeneration Research》 SCIE CAS 2025年第5期1277-1292,共16页
The primary mechanism of secondary injury after cerebral ischemia may be the brain inflammation that emerges after an ischemic stroke,which promotes neuronal death and inhibits nerve tissue regeneration.As the first i... The primary mechanism of secondary injury after cerebral ischemia may be the brain inflammation that emerges after an ischemic stroke,which promotes neuronal death and inhibits nerve tissue regeneration.As the first immune cells to be activated after an ischemic stroke,microglia play an important immunomodulatory role in the progression of the condition.After an ischemic stroke,peripheral blood immune cells(mainly T cells)are recruited to the central nervous system by chemokines secreted by immune cells in the brain,where they interact with central nervous system cells(mainly microglia)to trigger a secondary neuroimmune response.This review summarizes the interactions between T cells and microglia in the immune-inflammatory processes of ischemic stroke.We found that,during ischemic stroke,T cells and microglia demonstrate a more pronounced synergistic effect.Th1,Th17,and M1 microglia can co-secrete proinflammatory factors,such as interferon-γ,tumor necrosis factor-α,and interleukin-1β,to promote neuroinflammation and exacerbate brain injury.Th2,Treg,and M2 microglia jointly secrete anti-inflammatory factors,such as interleukin-4,interleukin-10,and transforming growth factor-β,to inhibit the progression of neuroinflammation,as well as growth factors such as brain-derived neurotrophic factor to promote nerve regeneration and repair brain injury.Immune interactions between microglia and T cells influence the direction of the subsequent neuroinflammation,which in turn determines the prognosis of ischemic stroke patients.Clinical trials have been conducted on the ways to modulate the interactions between T cells and microglia toward anti-inflammatory communication using the immunosuppressant fingolimod or overdosing with Treg cells to promote neural tissue repair and reduce the damage caused by ischemic stroke.However,such studies have been relatively infrequent,and clinical experience is still insufficient.In summary,in ischemic stroke,T cell subsets and activated microglia act synergistically to regulate inflammatory progression,mainly by secreting inflammatory factors.In the future,a key research direction for ischemic stroke treatment could be rooted in the enhancement of anti-inflammatory factor secretion by promoting the generation of Th2 and Treg cells,along with the activation of M2-type microglia.These approaches may alleviate neuroinflammation and facilitate the repair of neural tissues. 展开更多
关键词 BRAIN IMMUNE INFLAMMATION interaction ischemic stroke mechanism MICROGLIA NEURON secondary injury T cells
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An analysis of the interaction mechanism between the social history of medicine research and health communication from the perspective of mass communication
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作者 Jian-Liang Huang Kun-Lan Zuo Huan Liu 《History & Philosophy of Medicine》 2024年第1期14-18,共5页
The mass communication model and interactive ritual chain theory,which serve as communication paradigms in the new media era,facilitate and enhance the synergy between the fields of social history of medicine and heal... The mass communication model and interactive ritual chain theory,which serve as communication paradigms in the new media era,facilitate and enhance the synergy between the fields of social history of medicine and health communication.This study employs a comprehensive framework based on the five elements of the mass communication model:information source,communication subject,communication object,message content,and post-communication feedback.Additionally,it incorporates the interactive ritual chain theory to examine the evolving dynamics and developmental trajectory of research in the social history of medicine during the new media era.Conclusively,this paper acknowledges the existing interaction gaps in the interaction between health communication and the social history of medicine research while outlining the challenges for fostering collaboration and proposing strategic optimizations for effective integration. 展开更多
关键词 history of medicine health communication mass communication interaction mechanisms interaction ritual chain theory
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Framework-solvent interactional mechanism and effect of NMP/DMF on solvothermal synthesis of [Zn_4O(BDC)_3]_8 被引量:3
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作者 吴争平 王明雪 +4 位作者 周丽姣 尹周澜 谈进 张锦玲 陈启元 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2014年第11期3722-3731,共10页
In order to explore the effect mechanism of solvent on the synthesis of the metal organic framework materials, the microscopic interaction between solvent and framework and the effects of N,N-dimethyl-formamide(DMF) o... In order to explore the effect mechanism of solvent on the synthesis of the metal organic framework materials, the microscopic interaction between solvent and framework and the effects of N,N-dimethyl-formamide(DMF) or N-methyl- 2-pyrrolidone(NMP) on solvothermal synthesis of [Zn4O(BDC)3]8 were investigated through a combined DFT and experimental study. XRD and SEM showed that the absorbability of NMP in the pore of [Zn4O(BDC)3]8 was weaker than that of DMF. The thermal decomposition temperature of [Zn4O(BDC)3]8 synthesized in DMF was higher than that in NMP according to TG and FT-IR. In addition, the nitrogen sorption isotherms indicated that NMP improved gas sorption property of [Zn4O(BDC)3]8. The COSMO optimized calculations indicated that the total energy of Zn4O(BDC)3 in NMP was higher than that in DMF, and compared with non-solvent system, the charge of zinc atoms decreased and the charge value was the smallest in NMP. Furthermore, the interaction of DMF, NMP or DEF in [Zn4O(BDC)3]8 crystal model was calculated by DFT method. The results suggested that NMP should be easier to be removed from pore of materials than DMF from the point of view of energy state. It can be concluded that NMP was a favorable solvent to synthesize [Zn4O(BDC)3]8 and the microscopic mechanism was that the binding force between Zn4O(BDC)3 and NMP molecule was weaker than DMF. 展开更多
关键词 solvothermal synthesis [Zn4O(BDC)3]8 N-METHYL-2-PYRROLIDONE interactional mechanism COSMO solvation model density functional method
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Interactions between Bacillus mucilaginosus and silicate minerals(weathered adamellite and feldspar):Weathering rate,products,and reaction mechanisms 被引量:8
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作者 Mo, Binbin Lian, Bin 《Chinese Journal Of Geochemistry》 EI CAS 2011年第2期187-192,共6页
Bacillus mucilaginosus is a common soil bacterium,and usually used as a model bacterium in studying microbe-mineral interactions.Several reaction mechanisms of B.mucilaginosus weathering silicate minerals were propose... Bacillus mucilaginosus is a common soil bacterium,and usually used as a model bacterium in studying microbe-mineral interactions.Several reaction mechanisms of B.mucilaginosus weathering silicate minerals were proposed.However,the molecule mechanisms and detailed processes were still unclear.In this paper,bacterium-mineral interactions were studied in terms of variations in pH value over the experimental period,variations in mineral composition,weathering rates of silicate minerals and volatile metabolites in the culture medium,etc.,to further explore the bacterium-mineral interaction mechanisms.The results showed that B.mucilaginosus could enhance silicate mineral weathering obviously.The weathering rates were quite different for various kinds of silicate minerals,and the weathering rate of weathered adamellite could reach 150 mg/m2/d.Although B.mucilaginosus produced little acidic substance,pH in the microenvironment of bacterium-mineral complex might be far lower than that of the circumjacent environment;a large amount of acetic acid was found in the metabolites,and was likely to play an important role as a ligand.These results appear to suggest that acidolysis and ligand degradation are the main mechanisms of B.mucilaginosus dissolving silicate minerals,the formation of bacterium-mineral complexes is the necessary condition for the bacteria weathering silicate minerals,and extracelluar polysaccharides played important roles in bacterium-mineral interaction processes by forming bacterium-mineral complexes and maintaining the spe-cial physicochemical properties of microenvironment. 展开更多
关键词 Bacillus mucilaginosus silicate mineral interaction weathering rate mechanism
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Thermal Fluid-Solid Interaction Model and Experimental Validation for Hydrostatic Mechanical Face Seals 被引量:10
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作者 HUANG Weifeng LIAO Chuanjun +3 位作者 LIU Xiangfeng SUO Shuangfu LIU Ying WANG Yuming 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2014年第5期949-957,共9页
Hydrostatic mechanical face seals for reactor coolant pumps are very important for the safety and reliability of pressurized-water reactor power plants.More accurate models on the operating mechanism of the seals are ... Hydrostatic mechanical face seals for reactor coolant pumps are very important for the safety and reliability of pressurized-water reactor power plants.More accurate models on the operating mechanism of the seals are needed to help improve their performance.The thermal fluid–solid interaction(TFSI)mechanism of the hydrostatic seal is investigated in this study.Numerical models of the flow field and seal assembly are developed.Based on the mechanism for the continuity condition of the physical quantities at the fluid–solid interface,an on-line numerical TFSI model for the hydrostatic mechanical seal is proposed using an iterative coupling method.Dynamic mesh technology is adopted to adapt to the changing boundary shape.Experiments were performed on a test rig using a full-size test seal to obtain the leakage rate as a function of the differential pressure.The effectiveness and accuracy of the TFSI model were verified by comparing the simulation results and experimental data.Using the TFSI model,the behavior of the seal is presented,including mechanical and thermal deformation,and the temperature field.The influences of the rotating speed and differential pressure of the sealing device on the temperature field,which occur widely in the actual use of the seal,are studied.This research proposes an on-line and assembly-based TFSI model for hydrostatic mechanical face seals,and the model is validated by full-sized experiments. 展开更多
关键词 mechanical face seal HYDROSTATIC thermal fluid–solid interaction EXPERIMENT
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Mechanism of interaction relation between the rare-earth element Ce and impurity elements Pb and Bi in Ag-based filler metal 被引量:3
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作者 薛松柏 钱乙余 +1 位作者 赵振清 董健 《China Welding》 EI CAS 2001年第2期79-84,共6页
The mechanism of interaction relation between the rare-earth element Ce and elements Pb and Bi in Ag-based filler metal has been studied. The results show that the compounds CePb and CeBi with high melting point can b... The mechanism of interaction relation between the rare-earth element Ce and elements Pb and Bi in Ag-based filler metal has been studied. The results show that the compounds CePb and CeBi with high melting point can be easily produced between these three elements in the filler metal, which greatly limited the formation of the isolated phase Pb or Bi and also eliminated the bad effect of impurity elements Pb and Bi on the spreading property of Ag-based filler metal. The metallurgical and quantum-mechanical bond formation analysis show that a strong chemical affinity was existed between the rare-earth element Ce and impurity elements Pb and Bi, which was proved by the XRD analysis results. 展开更多
关键词 Ag-based filler metal rare-earth element mechanism of interaction
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Probing the interaction between asphaltene-wax and its effects on the crystallization behavior of waxes in heavy oil via molecular dynamics simulation
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作者 Yong Hu Xi Lu +3 位作者 Hai-Bo Wang Ji-Chao Fang Yi-Ning Wu JianFang Sun 《Petroleum Science》 SCIE EI CAS CSCD 2024年第4期2839-2848,共10页
High content of asphaltenes and waxes leads to the high pour point and the poor flowability of heavy oil,which is adverse to its efficient development and its transportation in pipe.Understanding the interaction mecha... High content of asphaltenes and waxes leads to the high pour point and the poor flowability of heavy oil,which is adverse to its efficient development and its transportation in pipe.Understanding the interaction mechanism between asphaltene-wax is crucial to solve these problems,but it is still unclear.In this paper,molecular dynamics simulation was used to investigate the interaction between asphaltenewax and its effects on the crystallization behavior of waxes in heavy oil.Results show that molecules in pure wax are arranged in a paralleled geometry.But wax molecules in heavy oil,which are close to the surface of asphaltene aggregates,are bent and arranged irregularly.When the mass fraction of asphaltenes in asphaltene-wax system(ω_(asp))is 0-25 wt%,the attraction among wax molecules decreases and the bend degree of wax molecules increases with the increase ofω_(asp).Theω_(asp)increases from 0 to 25 wt%,and the attraction between asphaltene-wax is stronger than that among waxes.This causes that the wax precipitation point changes from 353 to 333 K.While theω_(asp)increases to 50 wt%,wax molecules are more dispersed owing to the steric hindrance of asphaltene aggregates,and the interaction among wax molecules transforms from attraction to repulsion.It causes that the ordered crystal structure of waxes can't be formed at normal temperature.Simultaneously,the asphaltene,with the higher molecular weight or the more hetero atoms,has more obvious inhibition to the formation of wax crystals.Besides,resins also have an obvious inhibition on the wax crystal due to the formation of asphalteneresin aggregates with a larger radius.Our results reveal the interaction mechanism between asphaltene-wax,and provide useful guidelines for the development of heavy oil. 展开更多
关键词 Heavy oil interaction mechanism ASPHALTENES Waxes Molecular dynamics
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Unstable Tropical Air-Sea Interaction Waves and Their Physical Mechanisms 被引量:6
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作者 张人禾 巢纪平 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 1993年第1期61-70,共10页
In this paper, the tropical air-sea interaction is discussed by using a simple air-sea coupled model, in which the inertia-gravity waves are filtered off and only the equatorial Rossby waves are reserved in both the a... In this paper, the tropical air-sea interaction is discussed by using a simple air-sea coupled model, in which the inertia-gravity waves are filtered off and only the equatorial Rossby waves are reserved in both the atmosphere and the ocean. There exist two kinds of air-sea interaction waves in the coupled model, that is, the high-frequency fast waves and the low-frequency slow waves. The phase speed of the fast waves is westward and the frequencies are close to those of the equatorial Rossby waves in the atmosphere. The slow waves propagate westward in the part of short wavelengths and eastward in that of long wavelengths. There exist instabilities for both the westward and eastward propagating slow waves. If the fast waves are filtered off, there is little effect on the slow waves which have great influence on the long range process in the tropical air-sea coupled system. According to the tropical air-sea interaction waves we obtain here, a possible explanation to the propagating process of ENSO events is given. 展开更多
关键词 Unstable Tropical Air-Sea interaction Waves and Their Physical mechanisms ZHANG ENSO
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Strength weakening and its micromechanism in water–rock interaction,a short review in laboratory tests 被引量:5
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作者 Cun Zhang Qingsheng Bai +3 位作者 Penghua Han Lei Wang Xiaojie Wang Fangtian Wang 《International Journal of Coal Science & Technology》 EI CAS CSCD 2023年第1期18-32,共15页
Water–rock interaction(WRI)is a topic of interest in geology and geotechnical engineering.Many geological hazards and engineering safety problems are severe under the WRI.This study focuses on the water weakening of ... Water–rock interaction(WRI)is a topic of interest in geology and geotechnical engineering.Many geological hazards and engineering safety problems are severe under the WRI.This study focuses on the water weakening of rock strength and its infuencing factors(water content,immersion time,and wetting–drying cycles).The strength of the rock mass decreases to varying degrees with water content,immersion time,and wetting–drying cycles depending on the rock mass type and mineral composition.The corresponding acoustic emission count and intensity and infrared radiation intensity also weaken accordingly.WRI enhances the plasticity of rock mass and reduces its brittleness.Various microscopic methods for studying the pore characterization and weakening mechanism of the WRI were compared and analyzed.Various methods should be adopted to study the pore evolution of WRI comprehensively.Microscopic methods are used to study the weakening mechanism of WRI.In future work,the mechanical parameters of rocks weakened under long-term water immersion(over years)should be considered,and more attention should be paid to how the laboratory scale is applied to the engineering scale. 展开更多
关键词 Water–rock interaction Weakening mechanism Water content Immersion time Wetting–drying cycles Microscopic methods
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Physical Mechanism of Organic Matter-Mineral Interaction in Longmaxi Shale,Sichuan Basin,China 被引量:8
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作者 ZHAO Jianhua JIN Zhijun +2 位作者 JIN Zhenkui WEN Xin GENG Yikai 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2016年第5期1923-1924,共2页
Objective Shale gas is as an important kind of unconventional natural gas,with a great resource potential,and its exploration and development has attracted much attention around the world.Organic matter(OM)pores are... Objective Shale gas is as an important kind of unconventional natural gas,with a great resource potential,and its exploration and development has attracted much attention around the world.Organic matter(OM)pores are a common constituent in shales and form the dominant pore network of many shale gas systems. 展开更多
关键词 OM Physical mechanism of Organic Matter-Mineral interaction in Longmaxi Shale Sichuan Basin China
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A Hydrodynamic Model for Dimpled Mechanical Gas Seal Considering Interaction Effect 被引量:1
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作者 时礼平 黄巍 王晓雷 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI CSCD 2015年第4期438-445,共8页
The mechanical gas seal of aero engine has to face the problems of high wear rate and short lifetime.Surface texture has shown beneficial effects over the tribological characteristics.Here,a hydrodynamic model for dim... The mechanical gas seal of aero engine has to face the problems of high wear rate and short lifetime.Surface texture has shown beneficial effects over the tribological characteristics.Here,a hydrodynamic model for dimpled annular area of mechanical gas seal considering the″interaction effect″between adjacent dimples is developed based on the Reynolds equation.Different multi-row columns are chosen and the dimensionless pressure in radial and circumferential directions is calculated.The results indicate that the″interaction effect″is more obvious in the circumferential direction than in the radial direction,even when the area and depth of the dimples are same.Moreover,for the 5×5column,the dimensionless average pressure considering the″interaction effect″increases by45.41% compared with the 1×5column.Further analysis demonstrates that the model with the 5×5column can be more reasonable with the consideration of reducing the calculation error caused by boundary conditions to investigate the hydrodynamic effect for dimpled mechanical gas seal. 展开更多
关键词 surface texture mechanical gas seal hydrodynamic effect interaction effect aero engine
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Infl uencing Mechanism and Interaction of Muscovite on Thermal Decomposition of Ammonium Polyphosphate 被引量:3
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作者 胡盛 CHEN Fei +2 位作者 LI Junguo 沈强 ZHANG Lianmeng 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2016年第2期334-339,共6页
The interaction mechanism and phase evolution of ammonium polyphosphate(APP)mixed with muscovite(APP/muscovite)were studied by TG,XRD and SEM,respectively,during heating.When the temperature is not higher than 300... The interaction mechanism and phase evolution of ammonium polyphosphate(APP)mixed with muscovite(APP/muscovite)were studied by TG,XRD and SEM,respectively,during heating.When the temperature is not higher than 300 ℃,muscovite has no effect on the thermaldecomposition of APP,and the initialdecomposition temperature of APP/muscovite at 283 ℃ is basically the same as the APP at 295 ℃,and the main thermaldecomposition products are polyphosphoric acid and NH_4H_2PO_4 at 300 ℃.The polyphosphoric acid,the decomposition products of APP,can enable K and Siout of muscovite and interact with muscovite chemically to generate Al_2O_3·2SiO_2,α-SiO_2 and phosphates(AlPO_4 and K_5P_3O_(10))compounds during 400 ℃-800 ℃,which own obvious adhesive phenomenon and porous structure with the apparent porosity of 58.4%.Further reactions between phosphates other than reactions among Al_2O_3·2SiO_2 and α-SiO_2 can generate KAlP_2O_7 at 1 000 ℃ and the density of residualproduct is improved by low melting point phosphate filling pore to form relatively dense structure and decrease the apparent porosity to 44.4%.The flame resistant and self-supported ceramic materials are expected to enhance the fire-retarding synergistic effect between APP and muscovite. 展开更多
关键词 ammonium polyphosphate(APP) muscovite thermal decomposition influencing mechanism interaction
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Mechanical characteristic variation of ballastless track in highspeed railway:effect of train–track interaction and environment loads 被引量:7
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作者 Shengyang Zhu Jun Luo +1 位作者 Mingze Wang Chengbiao Cai 《Railway Engineering Science》 2020年第4期408-423,共16页
Due to the fact that ballastless tracks in highspeed railways are not only subjected to repeated train–track dynamic interaction loads,but also suffer from complex environmental loads,the fundamental understanding of... Due to the fact that ballastless tracks in highspeed railways are not only subjected to repeated train–track dynamic interaction loads,but also suffer from complex environmental loads,the fundamental understanding of mechanical performance of ballastless tracks under sophisticated service conditions is an increasingly demanding and challenging issue in high-speed railway networks.This work aims to reveal the effect of train–track interaction and environment loads on the mechanical characteristic variation of ballastless tracks in high-speed railways,particularly focusing on the typical interface damage evolution between track layers.To this end,a finite element model of a double-block ballastless track involving the cohesive zone model for the track interface is first established to analyze the mechanical properties of the track interface under the loading–unloading processes of the negative temperature gradient load(TGL)followed by the same cycle of the positive TGL.Subsequently,the effect of wheel–rail longitudinal interactions on the nonlinear dynamic characteristics of the track interface is investigated by using a vehicle-slab track vertical-longitudinal coupled dynamics model.Finally,the influence of dynamic water pressure induced by vehicle dynamic load on the mechanical characteristics and damage evolution of the track interface is elucidated using a fluid–solid coupling method.Results show that the loading history of the positive and negative TGLs has a great impact on the nonlinear development and distribution of the track interface stress and damage;the interface damage could be induced by the wheel–rail longitudinal vibrations at a high vehicle running speed owing to the dynamic amplification effect caused by short wave irregularities;the vehicle dynamic load could produce considerable water pressure that presents nonlinear spatial–temporal characteristics at the track interface,which would lead to the interface failure under a certain condition due to the coupled dynamic effect of vehicle load and water pressure. 展开更多
关键词 Ballastless track High-speed railway mechanical characteristic Interface damage Train–track interaction Temperature gradient Dynamic water pressure Cohesive zone model
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Advances in Studies on Prevalence and Interaction Mechanism of Acquired Immunodeficiency Syndrome and Tuberculosis Coinfection 被引量:2
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作者 Chao Meng Na Li +2 位作者 Zhaoxiao Tong Huangxin Yan Shenxiao Min 《国际感染病学(电子版)》 CAS 2016年第4期115-118,共4页
Human immunodeficiency virus(HIV) and tuberculosis(TB) coinfection is a serious public health problem. HIV and TB promote each other, accelerating development of HIV to acquired immunodeficiency syndrome(AIDS) and hei... Human immunodeficiency virus(HIV) and tuberculosis(TB) coinfection is a serious public health problem. HIV and TB promote each other, accelerating development of HIV to acquired immunodeficiency syndrome(AIDS) and heightening TB mortality. Determining interaction mechanism between HIV and Mycobacterium tuberculosis can lead to development of effective treatments. This study summarizes prevalence status of AIDS and TB coinfection and research advances concerning their interaction mechanism. 展开更多
关键词 AIDS TB COINFECTION interaction mechanism Sum up
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Interaction mechanism between carboxylmethyl cellulose and iron ore concentrates in iron ore agglomeration 被引量:1
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作者 杨桂明 范晓慧 +3 位作者 陈许玲 袁礼顺 黄晓贤 李曦 《Journal of Central South University》 SCIE EI CAS CSCD 2015年第4期1241-1246,共6页
Carboxylmethyl cellulose(CMC) has become a commercial organic binder in agglomeration of iron ore concentrates. The relative molecular mass and degree of substitution(DS) of CMC have a large impact on its binding perf... Carboxylmethyl cellulose(CMC) has become a commercial organic binder in agglomeration of iron ore concentrates. The relative molecular mass and degree of substitution(DS) of CMC have a large impact on its binding performance. The interaction mechanism between CMC and iron ore particles was analyzed through Zeta potential measurements, adsorption measurements and infrared spectra. The results show that the interaction is chemical adsorption-oriented and the CMC's adsorption performance is related to the properties of CMC as well as the type of iron oxides. CMC has a greater affinity to Fe2O3 than Fe3O4, and CMC with higher relative molecular mass shows a higher adsorption isotherm. Pelletization of practical iron ore concentrates added with CMC further illustrates that CMC with higher relative molecular mass or DS exhibits a better binding performance, which is consistent with the results of adsorption tests. 展开更多
关键词 carboxylmethyl cellulose iron ore concentrate interaction mechanism adsorption agglomeration
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Coupled Electromagnetic Circuits and Their Connection to Quantum Mechanical Resonance Interactions and Biorhythms 被引量:2
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作者 W.Ulmer G.Cornelissen 《Open Journal of Biophysics》 2013年第4期253-274,共22页
The existence of specific biorhythms and the role of geomagnetic and/or solar magnetic activities are well-established by appropriate correlations in chronobiology. From a physical viewpoint, there are two different a... The existence of specific biorhythms and the role of geomagnetic and/or solar magnetic activities are well-established by appropriate correlations in chronobiology. From a physical viewpoint, there are two different accesses to biorhythms to set up connections to molecular processes: quantum mechanical perturbation theoretical methods and their resonance dominators to characterize specific interactions between constituents. These methods permit the treatment of molecular processes by circuits with characteristic resonances and “beat-frequencies”, which result from primarily fast physical processes. As examples, the tunneling processes between DNA base pairs (H bonds), the ATP decomposition and the irradiation of tumor cells are accounted for. 展开更多
关键词 Electromagnetic Circuits BIORHYTHMS Quantum mechanical Resonance interactions
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Investigation on Interaction Mechanism of Components in Fiction Materials Doping Rare Earths
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作者 许越 谢继亮 卢立国 《Journal of Rare Earths》 SCIE EI CAS CSCD 2007年第S1期369-372,共4页
Semi-metal friction material was applied widely in brake process of traffic and dynamical system. The friction materials with rare earth additive were manufactured by heating press molding process. The effects of diff... Semi-metal friction material was applied widely in brake process of traffic and dynamical system. The friction materials with rare earth additive were manufactured by heating press molding process. The effects of different reinforcing fibers and adhesives on the properties of the materials were studied by changing the formula. The results showed that the friction materials with YSM resin adhesive and hybrid fibers (Kevlar pulp and steel fiber) had higher and more stable friction coefficient and lower wear rate. Semi-metal friction materials with rare earths formed iron-rich surface layer in the worn surface, and the mechanisms of wear had obvious differences at typical temperature ranges. 展开更多
关键词 friction materials PROPERTIES interaction mechanism rare earths
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APPLICATION AND INTERACTION MECHANISMS OF POLYMERIC CARBOHYDRATE IN OXIDES AND SALT-TYPE MINERALS
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作者 李晔 许时 刘奇 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 1996年第4期43-47,共5页
A systematic analysis has been carried out to investigate the fields of application and interaction mechanism of polymeric carbohydrate, i.e. polysaccharides (including starch, dextrin, cellulose and cellulosic deriva... A systematic analysis has been carried out to investigate the fields of application and interaction mechanism of polymeric carbohydrate, i.e. polysaccharides (including starch, dextrin, cellulose and cellulosic derivatives) on various oxides and salt-type minerals in the article, interaction mechanisms of electrostatic, of hydrogen bonding, and of chemical interaction between polymeric carbohydrate and these minerals are put forward. 展开更多
关键词 polymeric carbohydrate OXIDES salt-type minerals interaction mechanisms
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Double optomechanical transparency with direct mechanical interaction
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作者 李凌超 饶识 +1 位作者 徐俊 胡响明 《Chinese Physics B》 SCIE EI CAS CSCD 2015年第5期352-357,共6页
We present a mechanism for double transparency in an optomechanical system. This mechanism is based on the coupling of a moving cavity mirror to a second mechanical oscillator. Due to the purely mechanical coupling an... We present a mechanism for double transparency in an optomechanical system. This mechanism is based on the coupling of a moving cavity mirror to a second mechanical oscillator. Due to the purely mechanical coupling and the radiation pressure, three pathways are established for excitations of the probe photons into the cavity photons. Destructive interference occurs at two different frequencies, leading to double transparency to the probe field, It is the coupling strength between the mechanical oscillators that determines the locations of the transparency windows. Moreover, the normal splitting appears for the generated Stokes field and the four-wave mixing process is inhibited on resonance. 展开更多
关键词 mechanical interaction double optomechanical transparency quantum interference
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MECHANICAL RELAXATION AND INTERMOLECULAR INTERACTION IN EPOXY RESINS/POLY (ETHYLENE OXIDE) BLENDS CURED WITH PHTHALIC ANHYDRIDE
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作者 罗筱烈 郑思珣 +1 位作者 马德柱 胡克良 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 1995年第2期144-153,共10页
The miscibility of the blend,composed of a bisphenol A epoxy resins (Diglycidyl ether of bisphenol A) (DGEBA) and poly(ethylene oxide) (PEG) and crosslinked by phthalic anhydride (PA) was studied using dynamic mechani... The miscibility of the blend,composed of a bisphenol A epoxy resins (Diglycidyl ether of bisphenol A) (DGEBA) and poly(ethylene oxide) (PEG) and crosslinked by phthalic anhydride (PA) was studied using dynamic mechanical method. Single glass transition temperatures intermediate between the two pure components were observed for all blend levels. The secondary relaxation mechanism should relate to not only diester linkage, but also hydroxyether structural unit in the system. Fourier transform infrared spectroscopy (FTIR) is applied to study the curing reaction and intermolecular specific interaction of the system. The results indicate the PEO participates the crosslinking reaction, accelerates the curing reaction and make the reaction more perfect. The shifts of the hydroxyl band and carbonyl band demonstrate the presence of the intermolecular interaction in the cured blend. Moreover, the molecular interaction between the side hydroxyl in the hydroxyether units and the ether bond in PEO macromolecules is stronger. 展开更多
关键词 CROSS-LINKED BLEND OF EPOXY RESIN MISCIBILITY mechanICAL RELAXATION CURING REACTION INTERMOLECULAR interaction
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