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Plastic Deformation of Nano-TiO_2 Ceramics Prepared by Different Methods

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Journal of Materials Science & Technology 1999年第1期15卷 71-74页

作者： zuolin cui(Research Center of Nanostructure Materials, Qingdao Institute of Chemical Technology, 266042 Qingdao, China) Research Center of Nanostructure Materials Qingdao Institute of Chemical Technology 266042 Qingdao China

The comparative study of the tensile plastic deformation of nano(n)-TiO2 ceramic prepared byphysical gas condensation (P) and chemical hydrolysis precipitation (C) methods was conductedby a gas pressure forming technique at 750~800℃. The results show that n-TiO2 (P) possessesexcellent property of tensile pIastic deformation comparing with n-TiO2(C). The reason for thisis attributed to the surface cleanness and soft agglomeration of n-TiO2 (P) particfe prepared inreIatively cIean vacuum condition.

关键词： TiO Nano Plastic Deformation of Nano-TiO2 Ceramics Prepared by Different Methods

Nano-composite Particles Synthesized by a Hydrogen Arc Plasma

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Journal of Materials Science & Technology 1997年第4期13卷 315-317页

作者： zuolin cui Zhikun ZHANG Chuncheng HAO Lifeng DONG Zhaoguo MENG and Liyan YU(Research Center of Nanostructured Materials, Qingdao Institute of Chemical Technology Qingdao 266042, China) Research Center of Nanostructured Materials Qingdao Institute of Chemical Technology Qingdao 266042 China

Nano-composite particles can be synthesized by a hydrogen arc plasma method, which possesses the advantages of high productivity, controllable size distribution and low electric energy consumption comparing with conventional gas condensation method. With this method, not only the nanoparticles of metals and alloys, but also the nano-composite particles with shell structure can be synthesized. The microstructures, compositions and the formation mechanism of the nano composite particles were studied

关键词： Nano-composite Particles Synthesized by a Hydrogen Arc Plasma Arc

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单晶纳米钽粉的电弧等离子体法制备

稀有金属材料与工程 2005年第2期34卷 309-311页

作者：王毅崔作林张志焜青岛科技大学山东青岛266042

采用电弧等离子体法成功制备了单晶态的纳米钽超微粒子,采用透射电子显微镜(TEM)、高分辨电子显微镜(HRTEM)对样品进行形貌、微观结构的观察和分析,发现它具有规则的表面,平均粒径大小在 10 nm 左右。并通过 X射线衍射(XRD)分析其组成成... 详细信息

采用电弧等离子体法成功制备了单晶态的纳米钽超微粒子,采用透射电子显微镜(TEM)、高分辨电子显微镜(HRTEM)对样品进行形貌、微观结构的观察和分析,发现它具有规则的表面,平均粒径大小在 10 nm 左右。并通过 X射线衍射(XRD)分析其组成成分,发现在所制备的样品中除钽外还含有氧化钽(δ-TaO),估计是由于纳米钽粒子被氧化所形成的产物。

关键词：单晶纳米钽粉电弧等离子体法

Pan-African metamorphism and magmatism in the Prydz Belt,East Antarctica:a geochronological perspective

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Advances in Polar Science 2024年第2期35卷 143-156页

作者： BAO Hong WANG Wei-(RZ) LIU Xinshu ZHAO Yue GONG Tingnan LIU Xiaochun cui Ying TIAN zuolin Institute of Geomechanics Chinese Academy of Geological SciencesBeijing 100081China Key Laboratory of Paleomagnetism and Tectonic Reconstruction Ministry of Natural ResourcesBeijing 100081China China University of Geosciences(Beijing) Beijing 100081China MOE Key Laboratory of Orogenic Belt and Crustal Evolution School of Earth and Space SciencesPeking UniversityBeijing 100871China Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China

The Prydz Belt in East Antarctica underwent extensive reworking during the late Neoprotertozoic–early Paleozoic Pan-African orogeny,which is characterized by granulite facies,clockwise P–T paths,and high dT/dP *** study compiles the existing age and composition data of zircon and monazite from metamorphic rocks and links their key characteristics to the metamorphic evolution of the Prydz *** frequency of zircon U–Pb ages starts to increase noticeably from~555 Ma,peaking between 530 Ma and 520 Ma,followed by a dramatic decline after 520 *** Th/U values(>0.1)of zircon are observed from~545 Ma,displaying a noticeable increasing trend in Th/U values before a rapid decline from~520 *** frequency of monazite ages progressively increases from~540 Ma,reaching its peak at 515 Ma,and then rapidly decreases after 490 *** with the crystallization behaviors of zircon and monazite,this study suggests that the systematic changes in Th/U values of zircon after 545 Ma indicate a transition in the thermal regime of the Prydz Belt towards the cooling *** growth of zircon and monazite corresponds to the post-peak cooling process,while the crystallization peak of monazite lags behind that of zircon by~5–15 Ma,which indicates a relatively low cooling *** the granitic intrusions accompanied the entire metamorphic evolution,the majority of them are younger than 520 *** results suggest that the Pan-African event likely peaked at~555–545 Ma and gradually cooled to near-solidus conditions at~520–510 Ma,with a relatively slow average cooling process.

关键词： East Antarctica Prydz Belt Pan-African orogeny zircon monazite U–Pb dating

ZnO异质复合对纳米TiO_2晶型转变和晶粒生长的影响

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硅酸盐学报 2006年第9期34卷 1078-1083页

作者：王志义史献峰崔作林青岛科技大学材料与环境科学学院山东青岛266042

以TiCl4,ZnSO4溶液为原料,采用液相沉淀法制备了不同ZnO/TiO2摩尔比的纳米复合粉体。对合成的纳米复合晶的相变、晶粒生长过程以及紫外-可见光吸收性能进行了研究。结果表明:纳米TiO2经ZnO复合后,其晶型转变和晶粒生长均受到抑制。当ZnO... 详细信息

以TiCl4,ZnSO4溶液为原料,采用液相沉淀法制备了不同ZnO/TiO2摩尔比的纳米复合粉体。对合成的纳米复合晶的相变、晶粒生长过程以及紫外-可见光吸收性能进行了研究。结果表明:纳米TiO2经ZnO复合后,其晶型转变和晶粒生长均受到抑制。当ZnO为30%(摩尔分数)时,且采用氨水滴入TiCl4和ZnSO4溶液中的沉淀方式制备的ZnO/TiO2纳米复合晶的晶型转变和晶粒生长最缓慢。紫外-可见光吸收测试表明:800℃煅烧的ZnO/TiO2复合粉体的吸收强度比纯TiO2的高;900～1050℃煅烧的复合粉体,虽然紫外区的吸收强度有所下降,但其光吸收带边比纯TiO2纳米晶的有显著红移。

关键词：锐钛矿氧化锌/二氧化钛纳米复合粉体光吸收

A review on numerical studies of airflow dynamics and particle deposition in human respiratory system Author links open overlay panel

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Particuology 2024年第8期91卷 351-377页

作者： Hao Jing Xinguang cui School of Aerospace Engineering Huazhong University of Science and TechnologyWuhan430074China

Accurate assessment and prediction of airflow dynamics and particle deposition in the human respiratory tract are essential for human health,involving inhaled drugs for treating various diseases and toxic particles that can cause *** intricate process involves complex multiphase flow with distinct respiratory *** fluid dynamics(CFD)acts as a bridge,overcoming the limitations of in vivo and in vitro experiments and providing a means to fully comprehend and reveal the fundamental mechanisms of respiratory flow and particle behavior on a microscopic *** paper provides a comprehensive overview and concise summary of recent advancements in the numerical simulation of airflow and particle deposition in the human respiratory ***,it summarizes the transition of respiratory tract models from segmented models to emerging physiological characteristic models and whole-lung airway models,and the latest developments on the effects of key factors such as geometric variations,respiratory patterns,and particle physical/chemical properties on respiratory flow and particle deposition.A notable focus of this review is on emerging physiological characteristics models and their associated complex airflow and particle dynamics inside *** paper concludes with recommendations for future research to further advance the development of this field.

关键词： Airflow dynamics Particle deposition Human respiratory system Numerical modeling

Multi-Sensor Fusion Adaptive Estimation for Nonlinear Under-observed System with Multiplicative Noise

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Chinese Journal of Electronics 2024年第1期33卷 282-292页

作者： Yongpeng cui Xiaojun SUN School of Electronic Engineering Heilongjiang University Key Laboratory of Information Fusion Estimation and Detection

The adaptive fusion estimation problem was studied for the multi-sensor nonlinear under-observed systems with multiplicative noise. A one-step predictor with state update equations was designed for the virtual state with virtual noise first of all. An extended incremental Kalman filter(EIKF) was then proposed for the nonlinear under-observed systems. Furthermore, an adaptive filtering method was given for optimization. The fusion adaptive incremental Kalman filter weighted by scalar was finally proposed. The comparison analysis was made to verify the optimization of the state estimation using adaptive filtering method in the filtering process.

关键词： Adaptive systems Information filters Matrices Adaptive estimation Kalman filters State estimation Nonlinear systems

Number of Solitons Emerged in the Initial Profile of Shallow Water Using Convolutional Neural Networks

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Journal of Systems Science & Complexity 2024年第2期37卷 463-479页

作者： WANG Zhen cui Shikun School of Mathematical Sciences Dalian University of TechnologyDalian 116024China School of Mathematical Sciences Beihang UniversityBeijing 100191China

The soliton resolution conjecture proposes that the initial value problem can evolve into a dispersion part and a soliton ***,the problem of determining the number of solitons that form in a given initial profile remains unsolved,except for a few specific *** this paper,the authors use the deep learning method to predict the number of solitons in a given initial value of the Korteweg-de Vries(KdV)*** leveraging the analytical relationship between Asech^(2)(x)initial values and the number of solitons,the authors train a Convolutional Neural Network(CNN)that can accurately identify the soliton count from spatio-temporal *** trained neural network is capable of predicting the number of solitons with other given initial values without any additional *** extensive calculations,the authors demonstrate the effectiveness and high performance of the proposed method.

关键词： Convolutional neural network deep learning method KdV equation soliton

耐高温Al_2O_3/TiO_2纳米复合粉体的制备及表征

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材料导报 2006年第F5期20卷 211-213页

作者：王志义史献峰崔作林青岛科技大学材料与环境科学学院

以TiCl4、Al2（SO4）3为原料，采用液相沉淀法制备了Al2O3／TiO2纳米复合粉体，同时对该纳米复合粉体的相变过程和晶粒生长过程进行了详细的研究，对紫外-可见光吸收进行了检测。结果表明：纳米TiO2粉体经Al2O3复合后，其耐温性能得到... 详细信息

以TiCl4、Al2（SO4）3为原料，采用液相沉淀法制备了Al2O3／TiO2纳米复合粉体，同时对该纳米复合粉体的相变过程和晶粒生长过程进行了详细的研究，对紫外-可见光吸收进行了检测。结果表明：纳米TiO2粉体经Al2O3复合后，其耐温性能得到极大提高，复合粉体经950℃煅烧后锐钛矿相含量仍然在77％，晶体粒径在20nm左右；锐钛矿向金红石晶型的转变温度在950-1100℃的高温区。复合粉体在低温煅烧后，紫外-可见吸收强度较纯纳米TiO2有较大提高。高温煅烧后。复合晶的紫外光吸收红移．

关键词：锐钛矿 Al2O3/TiO2 纳米复合粉体光吸收