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  • 1.
    主持人:王歆
    资助金额:80.00万元人民币
    随着人类航天活动的深入开展,为保障载人航天、应用工作卫星等航天器的安全,对空间目标与碎片跟踪观测,掌握其轨道运动规律,越来越为重要。进入新世纪以来,空间目标与碎片的探测也从对少量已知目标的跟踪,逐步发展到对大量未知目标的搜索与发现,即空间目标与碎片的巡天。轨道计算作为天体力学一个最经典的问题,始终没有得到满意的解决,同时它又是大量后续工作的基础,新的探测方法与目的促使必须不断研究新的轨道计算方法以满足日益增长的需求,本项目针对空间目标与碎片搜索的观测特征和资料特征,采用启发式算法、非参数方法等现代方法对轨道计算方法进行探索,在尽量少的假设基础上实现稳健的轨道计算方法,同时在轨道计算结果的评价上不再单一仅仅考虑以残差作为标志的精度,而是将可性引入对轨道计算结果的评价。项目研究成果将有助于建立一个面向空间目标搜索的业务化的轨道计算系统
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  • 2.
    主持人:翟凤瑞
    承担机构:红河学院
    资助金额:38.00万元人民币
    氮化硼(BN)难以致密化烧结是限制其广泛应用的关键问题之一,而现有的烧结技术尚难以获得高致密度(几乎无气孔)的亚微米或纳米尺度的BN及其复相陶瓷材料。最近一些研究发现,陶瓷粉末烧结过程中引入动态振荡压力可显著消除陶瓷内气孔等缺陷且细化晶粒,致密度和抗弯强度均大幅提高。基于这一新的烧结思路,本项目将动态振荡压力烧结新技术应用于BN及其复相陶瓷的致密化烧结,系统深入研究振荡压力和频率对BN粉末颗粒的重排、致密化过程中晶粒移动与晶界的迁移以及封闭气孔的排除作用机制;采用实时位移检测系统测量BN粉体的致密化曲线,结合晶粒尺寸变化,得到振荡压力烧结BN陶瓷的MSC曲线和烧结动力学窗口;研究振荡压力振幅、频率对BN及其复相陶瓷微观结构与宏观性能的作用规律,优化烧结工艺参数。本项目的实施,可以深入揭示BN陶瓷振荡压力烧结规律和烧结机理,为高致密度、细晶粒、低缺陷、高强度BN及其复相陶瓷的制备奠定基础。
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  • 3.
    资助金额:160635.60欧元
    Cancer remains a leading cause of death and morbidity worldwide.Prostate cancer(PC)is among the most frequently diagnosed non-skin cancers.Despite major advances in the understanding of cancer biology and development of candidate therapeutic agents,there is still an urgent need of exploiting innovative chemotypes and disrupting novel signalling pathways.Evidence suggests that targeted therapies may provide an original means of selectively modulating diseased prostate cells.Herein we propose the validation and devlopment of an unprecedented approach to tackle PC,addressing the overexpressed transient receptor potential vanilloid channel V1(TRPV1)with ligand-drug conjugates.This strategy provides a pioneering technological advance by aiming at the disruption of calcium signalling,while selectively targeting cancer cells for the delivery of cytotoxic payloads.The approach will additionally yield chemical probes for studying TRPV1 biology and for whole-animal optical imaging of TRPV1-overexpressed cancer cells.
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  • 4.
    主持人:ALLEN, TODD M
    资助金额:107652.00美元
    The Virology Core will be responsible for the generating full-length viral genome sequences from the majority of study subjects in this U19 through a highly organized, and high-throughput 454 sequencing approach. As these data can be generated rapidly, these data will also serve to identify subjects and epitopes for downstream analysis for the proposed specific studies on outlined in Projects 1-4. To rule out any confounding effects on our study design of possible virus-specific interferon resistance associated with prior interferon therapy failure, the Virology Core will also determine whether there is any evidence of genotypic resistance to interferon in subjects previously having failed interferon therapy. Specifically, the Virology Core will: Aim 1: Characterize full genome viral sequences from all HCV+ study subjects to identify epitope-specific sequence data for downstream phenotype and functional assays. Aim 2: Determine whether subjects who failed to achieve prior sustained virologic response (SVR) under interferon and ribavirin therapy exhibit any IFN genotypic resistance markers
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  • 5.
    nnotation:Current knowledge about the evaporation of liquid droplets in the high temperature(more than 500 K)gaseous media are formed based on the concepts by W.E.Ranz and W.R.Marshall obtained in large-scale experimental and theoretical studies and actively developed in the works by M.C.Yuen,L.W.Chen and M.Renksizbulut[Renksizbulut M.,Yuen M.C.Numerical study of droplet evaporation in a high-temperature stream//Journal of Heat Transfer.1983.V.105.No.3.P.389-397;Yuen M.C.,Chen L.W.Heat-transfer measurements of evaporating liquid droplets//International Journal of Heat and Mass Transf.1978.V.21.No.5.P.537-542].However,experimental and theoretical studies of the last 10-20 years show that classical approaches,taking into account only homogeneity and stationarity of a temperature field of the liquid droplet,and the consumption of all the supplied energy for the phase transition,are limited over ranges of temperatures,for which it is possible to obtain the evaporation characteristics satisfying the experimental data.As a rule,up to 600-700 K,it is possible to obtain the deviations from experiments within 10-15%.Such the models include models developed by O.Knake,I.N.Stransky,N.A.Fuchs,D.B.Spalding,M.S.Yuen,L.W.Chen and M.Renksizbulut,S.S.Kutateladze,D.V.Labuntsov,V.I.Terekhov,A.A.Avdeev,V.E.Nakoryakov,S.Ya.Misyura and other well-known researchers.For temperatures of gases more than 1000 K,adequate models of phase transitions have not been yet developed.The adequate models allow the prediction of the rate of phase transformations corresponding to the experimental data with deviations of up to 10-20%.The main reason of the mentioned problem is a deficiency of reliable experimental data.At the same time,there are so many promising applications for these temperature ranges in liquid drop-gaseous environment systems,e.g.contact heat exchange devices,ignition of fuel in combustion chambers,heat carriers based on flue gases,droplets and vapors of water.In addition to the above,solving the problems of the efficiency of both modern and prospective heat and power equipment is the key to the further development of the entire heat and power complex not only in Russia,but all over the world. In the last 5 years,the author with colleagues has published over ten articles in the top-rated international journals from the first and second quartiles of Web of Science(the main ones are listed in Section 4.8).Results of these papers show that the buffer(vapor)layer around evaporating droplets can essentially influence the evaporation rate of drops.Based on experimental data obtained using high-speed recording software-hardware cross-correlation complexes and systems of tracking interfaces corresponding to the world level,the author's team develops hypothesis on the dominant impact of the droplet thermal protection(i.e.limitations of the surface transformation due to the intensive evaporation).The problem of experimental substantiation of the hypothesis developed by the authors is relevant.Solving this problem will allow creating adequate physical and mathematical models for predicting the rates of evaporation of liquid droplets in a wide temperature range,even up to 2000 K.For the first time,characteristics of the thermal vapor protection(layer thicknesses,temperature gradients,gas composition,etc.)of droplets of liquids,solutions and suspensions will be determined when moving in high-temperature gaseous media.Fundamental results of the project will significantly change concepts on the high-temperature evaporation of liquid droplets. The authors are going to generalize knowledge of the inhomogeneous and nonstationary character of the formation of a temperature field of an evaporating water drop,to reveal the influence of various impurities and particles(in the case of suspensions,emulsions,solutions)on the parameters of a temperature field.The usage of a group of optical methods(e.g.Particle Image Velocimetry,Particle Tracking Velocimetry,Stereo Particle Image Velocimetry,Interferometric Particle Imagine,Shadow Photography,Planar Laser Induced Fluorescence,Laser Induced Phosphorescence),the high-speed video recording,cross-correlation software-hardware complexes and fluorescent dyes allows obtaining reliable experimental data on the droplet temperature fields,as well as temperatures and concentrations of the vapor-gas mixture around droplets. It is planned to focus on the use of new knowledge of the thermal vapor protection of droplets of water,water-based suspensions,solutions and emulsions for development of advanced firefighting technologies.In particular,the project’s team plan to develop physical and mathematical models that allow predicting the required conditions for injection of an aerosol into a high temperature gas zone in order to ensure the required mode of water evaporation,minimum entrainment of droplets and other criteria characteristic of the known principles of optimization of heat and mass transfer processes. Expected results:-the main expected results 1.The project’s team will manufacture the unique tests benches and develop the experimental techniques based on high-speed cross-correlation video complexes and the combination of optical imaging methods for the simultaneous recording of all key parameters of gas-vapor-droplet flows:temperature,concentration,dispersity,speed,etc.The planned temperature range for the heating of droplets(from 300 K to 1500 K)corresponds to a large group of industrial gas vapor-droplet applications. 2.New knowledge will be obtained about the physics of heating and evaporation of droplets of liquids,solutions and suspensions in combustion products,air,gaseous mixtures,i.e.possible modes,stages,speeds. 3.For the first time,the authors will present temperature distributions(i.e.temperature fields)in evaporating droplets of water,water-based suspensions,emulsions,solutions,as well as in the near-surface vapor-gas layer.Thus,it will be possible to predict the temperature,concentration and aerodynamic traces of evaporating liquid droplets when moving through high-temperature gases. 4.The scientific team will determine the ranges of reliable evaporation rates of widely used liquids under varying sizes of droplets and temperatures in wide ranges:0.1-5 mm,300-1500 K,respectively). 5.It is extremely relevant to develop physical and mathematical models taking into account the most important heat and mass exchange processes:formation of an unsteady temperature field inside droplets and in their near-surface vapor-gas layer,thermal vapor protection of droplets,vapor emission,deceleration of droplets due to evaporation,surface transformation and other new and poorly studied effects. 6.The authors will generalize results,formulate conclusions,present dimensionless criterial expressions and integral dependencies. 7.The authors are going to make methodical materials with research results for use in the educational process at bachelor's,master's and postgraduate degree courses of TPU. 8.Not less than 6 articles will be published in Russian and international publications(in the periodicals indexed by Web of Science or Scopus). 9.The members of the scientific team will evaluate research results at a minimum 4-5 leading Russian and foreign scientific conferences,symposiums,forums,congresses. -the compliance assessment of the planned results with the world level of research The review article[Sazhin S.S.Modeling of fuel droplet heating and evaporation:Recent results and unsolved problems//Fuel.2017.V.196.P.69-101]analyzes the achievements and unsolved problems in the field of evaporation of droplets of liquids and fuels,presents the important conclusions on the major challenges of creating adequate evaporation models under the intensive heating.The greatest difficulty,from the point of view of adequate modeling,is the consideration of the process of formation of a substantially unsteady and inhomogeneous temperature field of evaporating droplets,as well as the vapor buffer layer around them and in their wake during evaporation in a flame and combustion products.The current project is also aimed at the solution of this problem. According to a review of recent publications in peer-reviewed international journals(e.g.,International Journal of Multiphase Flow,International Journal of Heat and Mass Transfer,International Journal of Heat and Fluid Flow,International Journal of Thermal Science,Journal of Heat Transfer,Experimental Thermal and Fluid Science,Thermal Science,Applied Thermal Engineering)the project’s team makes findings of the fact that the planned results of the project are higher the world level of research. -the possibility of practical use of the project's planned results in economics and social sphere From the point of view of engineering and technology,the most important direction of application of the obtained project results is increasing in efficiency of thermal power equipment(in particular,contact heat exchangers)due to full utilization of heat of the leaving gases of boiler plants. From the point of view of science and education,the experimental methods and test benches,the nonstationary and inhomogeneous temperature fields of evaporating droplets,physical and mathematical models,correlations,expressions,dependencies,established effects,conclusions and recommendations will be of great interest for researchers of two-phase and heterogeneous flows.The experimental and theoretical data will substantially expand the modern concepts on physics of the intensive evaporation of liquid droplets.The particular interest involves scientific knowledge of the formation of the buffer vapor layer around the evaporating drops,which,on the one hand,plays the role of thermal protection,and,on the other hand,water vapors by analogy with greenhouse gases intensively emit energy.The reliable measurements of sizes of such layers,component composition and heat fluxes will be of great importance for many gas-vapor-droplet directions of science,engineering and technologies(e.g.firefighting,creation of new heat carriers based on flue gases,vapors and droplets of water,etc.).
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  • 6.
    В результате ряда недавних экспериментов in vitro обнаружены нетривиальные статистические свойства межэлементных синаптических связей в локальных кортикальных сетях.Показано,что для данных сетей характерна кластеризация соединений,что позволяет говорить о таких как об обладающих «скелетообразной» или «кластерной» структурой.В рамках предлагаемого проекта ставится задача математического моделирования локальных кортикальных сетей с кластерной структурой синаптических соединений.Будут созданы реалистичные математические модели,описывающие экспериментально наблюдаемые свойства кластеризации синаптических соединений.Будет изучена динамика данных моделей,что позволит пролить свет на возможную функциональную роль кластерных структур в кортикальных сетях.Предполагается,что кластеризация синапитических соединений может иметь важное значение для таких процессов как временное интегрирование сенсорных сигналов и динамическое хранение информации.
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  • 7.
    资助金额:15990000.00日元
    We focused on a photonic crystal slab as technology platform for the integration of terahertz devices, such as planar circuits, with operating frequency located between the radio and light waves. We investigated the low loss of terahertz waveguides using a photonic crystal slab, and achieved a loss of 0.04 dB/cm in the 0.3 THz band. We also demonstrated a compact diplexer using a directional coupler based on photonic crystal waveguides. Then, we fabricated a prototype of a terahertz integrated circuit using the photonic crystal platform for frequency division wireless communication, which consists of the diplexer, a grating coupler as input-output wireless interface, and resonant tunneling diodes. Finally, we discussed the operating bandwidth of terahertz photonic crystal devices.
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  • 8.
    资助金额:2730000.00日元
    Chronic periodontitis is an intraoral infectious disease that affects the nation with high prevalence. We see a lot of patients being forced to extract their teeth because of inflammatory bone resorption. To promote fundamental research of novel cell therapy using mesencymal stem cells, we established stem cell lines from the bone marrow of GFP transgenic mice and constructed a new expression vector targeting inhibition of several inflammatory cytokines. We expect that those new tools promote novel cell therapy in periodontal research.
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