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Mild Hydrothermal Synthesis, Characterization and Properties of Na_5Ce(PO_4)_3, Na_3Yb_2(PO_4)_3·H_2O and Na_(5-2x)Yb_2xCe_(1-x)(PO_4)_3·yH_2O

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Chemical Research in Chinese Universities 2000年第4期16卷 287-300页

作者： xu yao-hua, WANG Dan, FENG Shou-hua, PANG Wen-qin and YUE Yong (Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Jilin University, Changchun 130023, P. R. China Wuhan Institute of Physics, Academia Sinica, Wuhan 430071, P. R. China) 吉林大学无机合成与制备化学开放实验室吉林长春 130023 中科院武汉物理与数学所湖北武汉 430071

Novel phosphates, Na5-2x Yb2xCe1-x (PO4)3·yH2O(x=0-1, y=0-1), were synthesized under mild hydrothermal conditions at 240℃ with Ce(SO4)2·H2O, Ce(SO4)2·2(NH4)2SO4· 4H2O, CeO2, Yb2O3, 85 % H3PO4 and NaOH as the starting materials. The products were sensitively influenced by the pH value of the systems and reaction temperature. Under an acidic condition, CePO4 was the product at 240℃, in which Ce(Ⅳ ) species was reduced to Ce(Ⅲ) species. Under a weak basic condition, Na2Ce(PO4)2·0. 79H2O was produced. Under a medium basic condition, the expected compound Na5Ce(PO4)3 was the product. Under a basic condition, CeO2 was the final product, amorphous phase was also produced in some cases. The structure of the compounds were investigated by X-ray diffraction, SEM, IR, Raman, 31P MAS NMR and XPS spectroscopies. To determine the valence of Ce in the compound, EPR and DRS of the compound were also recorded. The thermal properties of the compounds were determined with DTA-TG analysis. Na5Ce(PO4)3 was decomposed into Na3Ce(PO4)2, Na4P2O7 and O, at 694℃, in which Ce(Ⅳ) was reduced to Ce(Ⅲ) species. Na3Yb2(PO4)3·H2O lost water and was transferred into a new phase at a high temperature 682℃. The thermal stability of Na5-2xYb2xCe1-x (PO4)3· yH2O could be improved by increasing x value. When x=0. 54, the compound was stable even at the temperature ca. 1 000℃.The ionic conductivities of the compounds were increased when the amount of Yb in the compound was increased and when x=0. 33, it reached the highest value (σ300℃= 3. 96 ×10-6 S·cm-1).

关键词： Cerium Ionic conduction Mild hydrothermal synthesis Rare earth phosphate Ytterbium

Enhancement of naked FIX minigene expression by chloroquine in mice

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Acta Pharmacologica Sinica 2004年第5期25卷 28-33页

作者： Hong-yan CHEN, huan-zhang ZHU, Bin LU, xuan xu, Ji-hua yao, Qi SHEN, Jing-lun xuE1State Key Laboratory of Genetic Engineering, Institute of Genetics,School of Life Sciences, Fudan University, Shanghai 200433, China Institute of Genetics School of Life Sciences Fudan University State Key Laboratory of Genetic Engineering 上海 200433

AIM: To study the effect of chloroquine on the expression of human clotting factor IX (hFIX) in mice. METHODS:Hydrodynamics-based naked DNA plasmid administration was performed by tail vein injection of 10 g of pCMV-hFIX and chloroquine (0, 100, 200, and 500 mol/L) in 2.2 mL of Ringer solution within 6-7 s, the level andstability of hFIX expression, liver damage and toxicity were then examined. RESULTS: The maximum expression ofhFIX level was 4.41.8 mg/L at 8 h after injection, 9.71.6 mg/L at 24 h only existed in 200 mol/L chloroquine-treated animals, which is 3-4 fold higher than that of control (P0.05). CONCLUSION: Chloroquine can enhance and sustain exogenous geneexpression in vivo without side effect under our experimental conditions.

关键词： chloroquine factor IX naked plasmids

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基于时频阈值的小波包语音增强算法

电子与信息学报 2008年第6期30卷 1363-1366页

作者：徐耀华王刚郭英空军工程大学电讯工程学院

该文考虑小波域应用语音降噪中听觉掩蔽效应,提出了一种基于时频阈值的小波包语音增强算法。新算法首先通过频域增强方法得到语音粗估计,通过跟踪估计语音时频特性的细节变化,及时调节降噪阈值,然后利用时频阈值对小波包系数进行处理,... 详细信息

该文考虑小波域应用语音降噪中听觉掩蔽效应,提出了一种基于时频阈值的小波包语音增强算法。新算法首先通过频域增强方法得到语音粗估计,通过跟踪估计语音时频特性的细节变化,及时调节降噪阈值,然后利用时频阈值对小波包系数进行处理,以达到语音降噪的目的。实验表明,较传统小波域语音降噪方法,新算法在抑制平稳白噪声的同时减小了语音信息的损失,其增强语音的MOS(Mean Opinion Score)评分、输出信噪比、MBSD(Modified Bark Spectral Distortion)测度性能均有明显提高。

关键词：语音增强小波阈值时频

基于拟生态优化算法的CDMA多用户检测方法

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电子与信息学报 2006年第11期28卷 2111-2115页

作者：许耀华胡艳军安徽大学电子科学与技术学院合肥230039

拟生态优化算法是一类模拟自然生态系统运行机制,求解复杂优化问题的智能计算方法,其中的蚁群算法和粒子群算法是较新出现的两种具有不同特点的方法。该文研究基本蚁群算法和离散粒子群算法,并结合CDMA多用户检测问题,改变算法的搜索机... 详细信息

拟生态优化算法是一类模拟自然生态系统运行机制,求解复杂优化问题的智能计算方法,其中的蚁群算法和粒子群算法是较新出现的两种具有不同特点的方法。该文研究基本蚁群算法和离散粒子群算法,并结合CDMA多用户检测问题,改变算法的搜索机制,提出两种CDMA多用户检测的方法。从理论分析以及实验仿真的角度对比两种方法,表明两种方法的计算复杂度低且可以得到较好误码率性能,同时又各有特点。

关键词：码分多址多用户检测拟生态系统优化算法蚁群优化算法粒子群优化算法

Rapid and scalable preparation of highly quaternized polymer networks to achieve efficient simultaneous adsorption of iodide and pertechnetate

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Science China Chemistry 2025年第1期68卷 337-349页

作者： Meiyun xu Song Gu Fulong Chen Zhe Zhao Peng Liu Daoben hua State Key Laboratory of Radiation Medicine and Protection School of Radiological and Interdisciplinary Sciences (RAD-X) Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions Soochow University

The efficient separation of fission products,such as TcO4-and I-,holds strategic significance for the management of radioactive wastes and environmental *** this study,we propose an ultrafast strategy for scalable preparation of a highly quaternized organic network to facilitate efficient and synchronous separation of iodide and *** network can be prepared within a few minutes at room temperature,using polyethylenimine and 1,2,4,5-tetrakis（bromomethyl）benzene as building *** chlorine replacement,the network,abundantly decorated with quaternary ammonium groups （Cl@QPN）,exhibits an ultrahigh positive charge density of 7.6 mmol/*** enables the rapid and efficient enrichment of target anions through strong electrostatic Coulomb *** a result,Cl@QPN exhibits significantly higher adsorption rate constants of 0.830 g/（mg min） for ReO4-（a nonradioactive surrogate of TcO4-） and 0.677 g/（mg min） for I-compared to other ***,it possesses high adsorption capacities,reaching 1,681 mg/g for ReO4-and 917.4 mg/g for I-.Cl@QPN also demonstrates good selectivity towards target ions and shows efficient adsorption for99TcO4-.Additionally,Cl@QPN exhibits high dynamic processing capacities,handling up to 3,100 and 7,400 kg of simulated streams per kilogram of material for I-and ReO4-,respectively.

关键词： quaternized polymer networks adsorption pertechnetate iodide liquid radioactive streams

Software-defined process-near-memory architecture using 3D hybrid bonding integration

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Science China(Information Sciences) 2025年第1期68卷 366-378页

作者： Anlin xu Chenchen DENG Jianfeng ZHU yao WANG Shaojun WEI Leibo LIU School of Integrated Circuits Tsinghua University Beijing Institution of Tracking and Communication Technology Beijing National Research Center for Information Science and Technology Tsinghua University

With the unprecedented explosive growing amount of global data, the development of computing chips, which encounter bottlenecks such as power wall and memory wall, cannot satisfy the demanding requirement. This work proposes a software-defined process-near-memory(SDPNM) computing architecture implemented using 3D hybrid bonding *** software-defined chip architecture, featuring spatial computations and dynamic reconfiguration, innovates in a top-down manner to achieve high energy efficiency while maintaining flexibility after fabrication. The process-near-memory integration further advances the SDNPM chip in a bottom-up way to reduce the energy consumption of data movement while improving the bandwidth. Utilizing a relatively mature fabrication and bonding process can result in feasible solutions for both data-intensive and compute-intensive applications including digital signal processing and artificial intelligence. The logic die is fabricated in the SMIC 40 nm process and the DRAM die is fabricated in the PSMC 25 nm process. The hybrid bonding is implemented by XMC. The experimental results show that the energy efficiency of the proposed SDPNM chip is 33.1× better than the state-of-the-art FPGA ranging from 8.2× to 104.1×.

关键词： software-defined chips process near memory energy efficiency dynamic reconfiguration domain specific

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改进PSO算法结合FLANN在传感器动态建模中的应用

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振动与冲击 2009年第1期28卷 1-3,8页

作者：张媛媛徐科军许耀华合肥工业大学仪器科学与光电工程学院合肥230009 安徽大学电子科学与技术学院合肥230009 合肥工业大学电气与自动化工程学院合肥230009 工业自动化安徽省工程技术研究中心合肥230009

将改进的粒子群优化(PSO)算法和函数联接型神经网络(FLANN)相结合,实现传感器的动态线性建模。利用传感器的动态标定实验数据,首先训练FLANN神经网络,网络训练结束后的权值作为粒子群中某个粒子的初始值,而后利用改进的PSO算法继续寻优... 详细信息

将改进的粒子群优化(PSO)算法和函数联接型神经网络(FLANN)相结合,实现传感器的动态线性建模。利用传感器的动态标定实验数据,首先训练FLANN神经网络,网络训练结束后的权值作为粒子群中某个粒子的初始值,而后利用改进的PSO算法继续寻优,得到的全局最优值即为所求的传感器动态模型的系数。实验结果表明,该方法结合了PSO和FLANN两者的优点,建模精度高。

关键词： MAF传感器粒子群优化算法函数联接型神经网络建模

PSO算法结合BP神经网络在传感器静态非线性校正中的应用

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计量学报 2009年第6期30卷 -页

作者：张媛媛徐科军许耀华黄胜初 Yuan-yuan Ke-jun yao-hua Sheng-chu 安徽大学电子科学与技术学院安徽合肥230039 合肥工业大学仪器科学与光电工程学院安徽合肥230009 合肥工业大学电气与自动化工程学院安徽合肥230009 工业自动化安徽省工程技术研究中心安徽合肥230009

将粒子群优化(PSO)算法与BP神经网络相结合,应用在传感器静态非线性特性的校正中.用PSO算法所得到的全局最优值作为BP神经网络的初始权值,训练BP神经网络,训练结束后的神经网络作为传感器的静态特性校正器.应用结果表明,该方法可以提高B... 详细信息

将粒子群优化(PSO)算法与BP神经网络相结合,应用在传感器静态非线性特性的校正中.用PSO算法所得到的全局最优值作为BP神经网络的初始权值,训练BP神经网络,训练结束后的神经网络作为传感器的静态特性校正器.应用结果表明,该方法可以提高BP神经网络的精度,并且该神经网络具有良好的泛化能力.Abstract：A static nonlinear errors method for correcting the sensors based on BP neural network using particle swarm optimization (PSO) is described. The global best values of particle swarm are used as initial weights of BP neural network to train BP neural network. Then the trained neural network is regarded as the sensor's corrector. The application results show that this method can improve the precision of the BP neural network, and the generalization capability of the neural network is good.

关键词： PSO算法神经网络传感器非线性校正 BP Neural Network BP neural network particle swarm optimization generalization capability application results 全局最优值粒子群优化非线性特性应用结果训练静态特性泛化能力初始权值 initial improve 校正器

Mainchain conformation ordering self-assembly tailored room temperature phosphorescence emission

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Science China Chemistry 2025年第1期68卷 329-336页

作者： Yuzhu Li Yumeng Gao Feng Tian Yu Wang Yuan yao Shaoliang Lin Xiang Ma Binbin xu Shanghai Key Laboratory of Advanced Polymeric Materials Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science and Technology Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Key Laboratory for Advance Materials and Feringa Noble Prize Scientist Joint Research Centre Frontiers Science for Materiobiology and Dynamic Chemistry School of Chemistry and Molecular Engineering East China University of Science & Technology

Developing organic room-temperature phosphorescence （RTP） materials with a wide range of tunable-emission is significant in expanding the applications of RTP ***,we rationally designed amphiphilic alternating copolymers poly(1,2-bis（4-alkoxyphenyl）ethane-1,2-dione-alt-（ethylene glycol）x)(P（Bz-alt-EGx）) that combined the advantage of alternating benzil and EGxskeleton,and tunable mainchain *** a mainchain conformation ordering assembly （COA） process,P（Bz-alt-EGx） self-assembled into well-defined platelets,and such assemblies emitted blue RTP at ca.425 nm due to the ordered folded-chain conformation and confined *** contrast,traditional self-assembly （TA） of P（Bz-alt-EGx） obtained less ordered aggregates,such as asymmetric worms,vesicles,and rod-like *** resultant less ordered aggregates exhibited yellow-green RTP at ca.550 *** wide-tuning RTP emission in solution （between blue and yellow-green,over125 nm） is realized using the P（Bz-alt-EGx） alternating copolymers under the treatment of different self-assembly *** study uncovers a new strategy to tailor the RTP emission through different self-assembly pathways and holds great promise for the fabrication of advanced optical materials.

关键词： self-assembly conformation ordering alternating copolymer phosphorescence emission