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HPLC测定龙钻通痹颗粒剂中青藤碱和补骨脂素

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中国实验方剂学杂志 2016年第20期22卷 58-61页

作者：农毅清蒋林庞宇舟罗宇东米阿娜广西南宁食品药品检验所南宁530001 广西中医药大学南宁530001 广西中医药大学制药厂南宁530023

目的:建立一种同时测定龙钻通痹颗粒剂中青藤碱和补骨脂素含量的高效液相色谱方法。方法:采用Phenomenex Gemini C18(4.6 mm×2.0 mm,5μm)色谱柱,以甲醇-0.1%三乙胺(47.5∶52.5)为流动相,流速1 m L·min^(-1),检测波长2.6 nm。结果:青... 详细信息

目的:建立一种同时测定龙钻通痹颗粒剂中青藤碱和补骨脂素含量的高效液相色谱方法。方法:采用Phenomenex Gemini C18(4.6 mm×2.0 mm,5μm)色谱柱,以甲醇-0.1%三乙胺(47.5∶52.5)为流动相,流速1 m L·min^(-1),检测波长2.6 nm。结果:青藤碱在1.01~12.12.g呈良好的线性关系(r=0.999 7),补骨脂素在0.02. 36~0.2.2.32.g呈良好的线性关系(r=0.999 8)。青藤碱和补骨脂素的平均回收率为100.49%和97.00%,RSD为3.0%和1.9%。结论:建立了同时测定龙钻通痹颗粒剂中青藤碱和补骨脂素含量的高效液相色谱方法,该方法快速,简便,结果准确,重复性好,可作为龙钻通痹颗粒剂的质量评价方法。

关键词：龙钻通痹颗粒剂高效液相色谱法青藤碱补骨脂素

Linear-Quadratic Pareto Cooperative Game for Mean-Field Backward Stochastic System

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Journal of Systems Science & Complexity 2024年第3期37卷 947-964页

作者： WANG yu School of Control Science and Engineering Shandong UniversityJinan 250061China

This paper focuses on a Pareto cooperative differential game with a linear mean-field backward stochastic system and a quadratic form cost functional. Based on a weighted sum optimality method, the Pareto game is equivalently converted to an optimal control problem. In the first place,the feedback form of Pareto optimal strategy is derived by virtue of decoupling technology, which is represented by four Riccati equations, a mean-field forward stochastic differential equation(MF-FSDE),and a mean-field backward stochastic differential equation(MF-BSDE). In addition, the corresponding Pareto optimal solution is further obtained. Finally, the author solves a problem in mathematical finance to illustrate the application of the theoretical results.

关键词： Backward stochastic differential equation linear-quadratic control mean-field Pareto optimality

Approximate analytical solutions for threedimensional ascent trajectory of a solid-fuel launch vehicle with time-varying mass flow rate

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Chinese Journal of Aeronautics 2024年第10期37卷 275-293页

作者： Qi yu Wanchun CHEN Wenbin yu School of Astronautics Beihang UniversityBeijing 102206China

In the scenario that a solid-fuel launch vehicle maneuvers in outer space at high angles of attack and sideslip for energy management,Approximate Analytical Solutions(AAS)for the threedimensional(3D)ascent flight states are derived,which are the only solutions capable of considering time-varying Mass Flow Rate(MFR)at *** uneven MFR makes the thrust vary nonlinearly and thus increases the difficulty of the problem *** AAS are derived based on a 3D Generalized Ascent Dynamics Model(GADM)with a normalized mass as the independent *** simplify some highly nonlinear terms in the GADM,several approximate functions are introduced carefully,while the errors of the approximations relative to the original terms are regarded as minor ***,a finite series with positive and negative exponents,called Exponent-Symmetry Series(ESS),is proposed for function approximation to decrease the highest exponent in the AAS so as to reduce computer round-off *** calculate the ESS coefficients,a method of seeking the Optimal Interpolation Points(OIP)is proposed using the leastsquares-approximation *** to the artful design of the approximations,the GADM can be decomposed into two analytically solvable subsystems by a perturbation method,and thus the AAS are obtained ***,to help implement the AAS,two indirect methods for measuring the remaining mass and predicting the burnout time in flight are put forward using information from *** results verify the superiority of the AAS under the condition of time-varying MFR.

关键词： Approximate analytical solutions 3D ascent trajectory Solid-fuel launch vehicle Uneven thrust Energy management

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城市生态保护红线与生态控制线协调性研究

中国环境管理 2017年第1期9卷 69-74页

作者：王成新徐彦颖于雷王依环境保护部环境规划院北京100012 浙江省环境保护科学设计研究院杭州310007

生态保护红线与生态控制线是生态空间保护的两条主线,两线既有差别又紧密联系。生态保护红线是维护区域和城市生态安全的格局和数量底线,生态控制线是控制城市开发边界和保障生态安全划定的生态用地控制线。地市是两线划定的适宜尺度,... 详细信息

生态保护红线与生态控制线是生态空间保护的两条主线,两线既有差别又紧密联系。生态保护红线是维护区域和城市生态安全的格局和数量底线,生态控制线是控制城市开发边界和保障生态安全划定的生态用地控制线。地市是两线划定的适宜尺度,本文在总结高、中、低不同开发强度城市两线探索实践的基础上,从两线联系与差异角度进行协调必要性分析。两线在概念内涵、法律地位、划定内容、技术方法、管控要求上的差异既是衔接的重点又是衔接的难点。然后,从空间、内容与管控等角度提出两线协调的思路,空间协调解决工作底图不统一、话语权不对等问题,内容协调解决生态用地保护目标不一致问题,管控协调解决部门管理准入条件不一致问题。最后,从工作机制角度,提出促进两线衔接的若干建议以及未来两线重点完善的内容和主要方向,为地市开展相关工作提供参考。

关键词：城市生态保护红线生态控制线环境总体规划协调性

充气式温毯预保温联合液体加温对肺叶切除术患者体温及热舒适度的影响

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基础医学与临床 2017年第5期37卷 718-722页

作者：夏海禄易杰黄宇光河北北方学院研究生部河北张家口075000 中国医学科学院北京协和医学院北京协和医院麻醉科北京100730

目的本研究拟探讨充气式温毯预保温联合液体加温对胸科全麻肺叶切除术患者体温及热舒适度的影响。方法择期行胸腔镜(VATS)肺叶切除术患者46例,随机分为预保温(充气式温毯)+液体(温箱)保温组(T)和对照组(C),每组2.例,记录预保温前后、麻... 详细信息

目的本研究拟探讨充气式温毯预保温联合液体加温对胸科全麻肺叶切除术患者体温及热舒适度的影响。方法择期行胸腔镜(VATS)肺叶切除术患者46例,随机分为预保温(充气式温毯)+液体(温箱)保温组(T)和对照组(C),每组2.例,记录预保温前后、麻醉过程中、术毕及进出麻醉术后恢复室(PACU)时患者鼓膜温及术后寒战、热舒适度、恢复室停留时间。结果在麻醉后1、2.3 h和术毕时4个时间点,与对照组相比,保温组患者术中的核心体温下降幅度小,更趋于稳定(P2.0.94比7.65±0.83,P<0.01)。结论术前预保温联合液体保温可维持全麻肺叶切除术患者术中体温平稳,降低低体温及寒战发生,提高热舒适度,为患者提供有效的体温保护。

关键词：体温保护充气式预保温液体加温肺叶切除术热舒适度

Low-melting mixture solvents: extension of deep eutectic solvents and ionic liquids for broadening green solvents and green chemistry

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Green Chemical Engineering 2024年第4期5卷 409-417页

作者： yu Chen Zhiwu yu MOE Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology Department of ChemistryTsinghua University

Green solvents such as water and ionic liquids(ILs) are pillars of the great mansion of green chemistry and green processing. Initially proposed as a new family of ILs,deep eutectic solvents(DESs) have received fast development in the past two decades. In this contribution,DESs are reviewed critically and the concept is extended to lowmelting mixture solvents(Lo MMSs),which cover all kinds of materials including ionic compounds,molecular compounds,and metals. Six classes of Lo MMSs are proposed as the new classification system and examples are given. Finally,several thermodynamic issues concerning Lo MMSs are discussed. Two new concepts,robustness of Lo MMSs and high-entropy Lo MMSs,are proposed.

关键词： Green solvents Deep eutectic solvents Low transition temperature mixture solvents Phase diagram EGaIn

Progress of Lyman-alpha-based beam emission spectroscopy(Ly BES)diagnostic on the HL-2. tokamak

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Plasma Science and Technology 2024年第3期26卷 118-125页

作者：周艺轩余羿许敏柯锐聂林徐皓赵光义刘灏袁子豪肖晨雨李继全肖池阶 the HL-2. Team Southwestern Institute of Physics Chengdu 610041People's Republic of China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082People's Republic of China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871People's Republic of China

An edge Lyman-alpha-based beam emission spectroscopy(LyBES)diagnostic,using a heating NBI(neutral beam injection)system,is currently under development on the HL-2. *** 2.-channel edge LyBES,which is intended to measure the density fluctuation in plasma edge(from R=1960 mm to R=2.2. mm)with an improved spatial resolution of 3.3 mm,is a complement to the existing conventional beam emission spectroscopy(BES)*** this article,we introduce the progress of LyBES diagnostic,including the collection optics,the monochromator,and the detector *** reflectance of the collection mirrors is measured to be~82.at 12. nm,and the aberration geometrical radius of the collection optics is tested to be~150μm in the aimed *** linear dispersion of the LyBES monochromator is designed to be~0.09 nm mm^(-1).The bandwidth of the detector system with the 5×10^(7)V A^(-1)preamplifier gain is measured to be~2.0 kHz,and the peak-to-peak noise of the detector system is tested to be~16 *** finalized design,components development and testing of the LyBES diagnostic have been completed at present,and an overall performance of the LyBES diagnostic is to be confirmed in the next HL-2. campaign.

关键词： density fluctuation Ly BES BES vacuum ultraviolet

Topological Stability and Entropy for Certain Set-valued Maps

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Acta Mathematica Sinica,English Series 2024年第4期40卷 962-984页

作者： yu ZHANG yu Jun ZHU School of Mathematical Sciences Xiamen UniversityXiamen 361005P.R.China

In this paper,the dynamics(including shadowing property,expansiveness,topological stability and entropy)of several types of upper semi-continuous set-valued maps are mainly considered from differentiable dynamical systems points of *** is shown that(1)if f is a hyperbolic endomorphism then for eachε>0 there exists a C^(1)-neighborhood U of f such that the induced set-valued map F_(f,U)has theε-shadowing property,and moreover,if f is an expanding endomorphism then there exists a C^(1)-neighborhood U of f such that the induced set-valued map F_(f,U)has the Lipschitz shadowing property;(2.when a set-valued map F is generated by finite expanding endomorphisms,it has the shadowing property,and moreover,if the collection of the generators has no coincidence point then F is expansive and hence is topologically stable;(3)if f is an expanding endomorphism then for eachε>0 there exists a C^(1)-neighborhood U of f such that h(F_(f,U,ε))=h(f);(4)when F is generated by finite expanding endomorphisms with no coincidence point,the entropy formula of F is ***,the dynamics of the set-valued maps based on discontinuous maps on the interval are also considered.

关键词： Set-valued map orbit space hyperbolic endomorphism perturbation shadowing expansiveness topological stability entropy

A new liquid membrane diffusion model for characterizing the adsorption kinetics of europium by using a continuous measurement of adsorption platform

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Nuclear Science and Techniques 2024年第1期35卷 59-72页

作者： Hao-Qi yu Tao yu Jian-Hua Ye State Key Laboratory of Nuclear Resources and Environment East China University of TechnologyNanchang 330013China CGN Cangnan Nuclear Power Co. Ltd.Cangnan 325800China Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices East China University of TechnologyNanchang 330013China School of Nuclear Science and Engineering East China University of TechnologyNanchang 330013China

To explore the kinetic adsorption under continuous and nonequilibrium states, an integration of continuous measurement and adsorption platform kinetics method was proposed, which was initially called the ICM-AP kinetics method, and a corresponding kinetic adsorption experimental method was developed. Adsorption experiments of europium(Eu) on Ca-bentonite,Na-bentonite, and the D2.1 cation exchange resin were performed using the ICM-AP kinetics method and continuous measurements. Because the kinetic experimental results observed in this study were different from those of traditional batch adsorption data, pseudo-first-order or pseudo-second-order kinetic models were unsuitable for fitting the experimental ***, a liquid membrane diffusion(LMD) model was developed based on the assumption of simultaneous adsorption/desorption to discuss the mechanism of kinetic adsorption. The kinetic adsorption mechanism was also studied by using *** results indicated that the proposed adsorption model can fit the experimental data more suitably, and the adsorption/desorption behaviors of Eu on bentonite and the D2.1 resin were simultaneously observed, suggesting that the adsorption kinetics of Eu(Ⅲ) was mainly dominated by hydrated Eu(Ⅲ) ions on the liquid membrane.

关键词： ICM-AP method LMD model Adsorption mechanism Eu(Ⅲ)