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Mural Defects Detection with Enhanced Terahertz Images

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Journal of Electronic Science and Technology 2016年第4期14卷 337-342页

作者： Min-jie Yuan Wen-Feng Sun Xin-Ke Wang Jia-Sheng Ye Sen Wang qun-Xi zhang Yan zhang the Department of Physics Capital Normal UniversityBeijing 100048China Harbin Institute of Technology Weihai 264209China Shaanxi History Museum Xi'an 710061China

In mausoleum murals, existing bubbles are one kind of the most harmful defects for the repair and protection of relics. For this reason, it is necessary to detect bubbles, especially the ones with small size. A method to detect the small bubbles with enhanced terahertz （THz） images is proposed. To simulate the bubbles in the mausoleum murals, circular grooves have been hidden in the plaster and then measured by the THz reflected time domain spectroscopy imaging system. To observe the small bubbles in murals, a comprehensive enhancement algorithm is adopted to process the obtained THz images. With the enhanced method, the circular grooves in the murals can be observed clearly, even for the circular groove with a diameter of 1.5 mm. The results indicate that the proposed comprehensive method can be used to detect the tiny defects of murals.

关键词： Comprehensive enhancement algorithm murals non-invasive detection terahertz tomography.

Rewiring local immune milieu by boosting dendritic cell for pancreatic cancer treatment

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Signal Transduction and Targeted Therapy 2020年第1期5卷 1445-1446页

作者： Yifan zhang qun-Ying Lei Fudan University Shanghai Cancer Center&Institutes of Biomedical Sciences Cancer InstitutesKey Laboratory of Breast Cancer in ShanghaiThe Shanghai Key Laboratory of Medical EpigeneticsShanghai Medical CollegeFudan UniversityShanghaiChina Department of Oncology Shanghai Medical CollegeFudan UniversityShanghaiChina State Key Laboratory of Medical Neurobiology Fudan UniversityShanghaiChina

A recent article by Hedge et al.(Cancer Cell 37,289–307.e289,2020)demonstrated that decreased dendritic cell and elevated Th17 cell could explain the immunosuppressive environment of PDAC when compared with that in lung *** DC population using Flt3L and CD40 agonist showed improved efficacy on PDAC mouse models and shed new light on its immunotherapeutic strategies.

关键词： al elevated lung

Spectral resource defragmentation based on PCE in flexible bandwidth optical networks

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The Journal of China Universities of Posts and Telecommunications 2012年第6期19卷 105-112页

作者： LIN qun ZHAO Yong-li CAO Xu-ping YU Xiao-song TANG Ting-ting zhang jie State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications

The granularity of the flexible bandwidth optical network is the spectral slots, which is much smaller than that of the wavelength switch optical network. For the dynamic clients＇ connections setup and tear down processes, it will give rise to fragmentation of spectral resources. It is the decline in the probability of finding sufficient contiguous spectrum for new connections that result in the fragmentation of spectral resource. To be more specific, these spectra may be unavailable and waste. In this case, the severe waste of the spectrum will lead to low efficiency in spectral utilization and will not adapt to large capacity requirements of transmission in the future. Because path computation element （PCE） framework has the characteristics of the central disposal and deployment of the spectrum resource, we construct the spectral resource allocation scenario based on PCE framework in the flexible bandwidth optical network to use spectrum resource effectively Based on the principle of the generation of the fragmentation, we put forward a spectrum resource defragmentation algorithm to consolidate the available spectrum for clients＇ connections. The simulation results indicate that this algorithm is able to reduce fragmentation of network, improve the continuity of spectral resource, reduce the blocking rate of services in the network and improve the spectral efficiency significantly.

关键词： flexible bandwidth optical network PCE framework spectral fragmentation spectral resource defragmentation

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一种新的水下机器人运动控制方法

佳木斯大学学报（自然科学版） 2000年第4期18卷 307-312页

作者：段群杰张学勇张铭钧佳木斯大学机械工程学院黑龙江佳木斯154007 大庆油田甲醇厂黑龙江大庆163000 哈尔滨工程大学机电工程学院黑龙江哈尔滨150001

对神经网络和模糊理论在水下机器人运动控制中的应用进行了探讨 ,提出了神经网络多步预测模型的非线性广义模糊预测控制算法 ,用神经网络方法实现了对水下机器人这一非线性系统的在线计算、滚动优化和在线控制 ,采用强化学习方法来构筑... 详细信息

对神经网络和模糊理论在水下机器人运动控制中的应用进行了探讨 ,提出了神经网络多步预测模型的非线性广义模糊预测控制算法 ,用神经网络方法实现了对水下机器人这一非线性系统的在线计算、滚动优化和在线控制 ,采用强化学习方法来构筑模糊控制系统中的神经网络 ,给出了神经网络多步预测模型及相应的控制算法和操作过程。

关键词：水下机器人模糊控制强化学习神经网络运动控制方法

Effects of calcineurin on LTP of rats in vivo

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Chinese Science Bulletin 2002年第6期47卷 476-479页

作者： LUO jie LOU Ailin WEI qun Department of Biochemistry and Molecular Biology Beijing Normal UniversityBeijing 100875China Department of Physiology Institute of Clinical Medical Sciences China-Japan Friendship HospitalBeijing 100020China

Calcineurin (CN) is thought to play a role in the synaptic plastivity and long-term potentiation (LTP) in the hippocampus. Based on two LTP models in vivo, a specific inhibitor cyclosporin A (CsA) of CN was observed, which affected LTP in the hippocampal dentate gyrus of the rats. The results indicated that CsA blocked LTP induced by high frequency stimulation (HFS) partly, but it had no effect on the decrease of the onset and peak latency of population spikes (PS) except that it reduced the increase of the amplitude after HFS. On the other hand, CsA blocked LTP induced by ginsenosides (GSS) completely. It suppressed the GSS-enhanced amplitude of PS reversibly and blocked the decrease of the peak latency of PS induced by the GSS. These results suggest that the postsynaptic CN plays a role in the induction of LTP in the hippocampus of the rats.

关键词： calcineurin cyclosporin A hippocampus long term po-tentiation (LTP) ginsenosides.

Rarely fast progressive memory loss diagnosed as Creutzfeldt-Jakob disease:A case report

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World Journal of Clinical Cases 2021年第34期9卷 10638-10644页

作者： Yong-Wei Xu jie-qun Wang Wei zhang Shu-Chang Xu Yun-Xia Li Department of Gastroenterology Tongji HospitalTongji University School of MedicineShanghai 200065China Department of Neurology Tongji HospitalTongji University School of MedicineShanghai 200065China

BACKGROUND Creutzfeldt-Jakob disease(CJD)is a rare degenerative disease of the central nervous system that can be contagious or hereditary and is a rare cause of rapidly progressive *** almost always results in death within 1-2 years from symptom *** SUMMARY Here,we report the case of a 57-year-old male who initially experienced dizziness followed by a 1-mo fast decline in memory *** presented to the local hospital and underwent magnetic resonance imaging and cerebrospinal fluid(CSF)examination,with no definitive ***,the symptoms of progressive forgetting *** addition,he exhibited progressive involuntary tremor of the ***,he came to our hospital,and according to the results of CSF examination,electroencephalography(EEG)and magnetic resonance imaging(MRI)tests and clinical manifestations of cerebellar ataxia,dementia,and myoclonus that rapidly progressed,with a short duration of illness,he was finally diagnosed with sporadic CJD(sCJD).CONCLUSION This case report aims to create awareness among physicians to emphasize auxiliary examination,CSF examination,EEG and MRI tests and recognition of cerebellar ataxia,dementia,and myoclonus that rapidly progress to prompt pursuit of an early diagnosis and identification of sCJD and to reduce complications.

关键词： Creutzfeldt-Jakob disease Prion disorders Progressive memory loss Dementia Case report

Quantum Discord and Entanglement in Heisenberg XXZ Spin Chain after Quenches

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Chinese Physics Letters 2012年第6期29卷 31-34页

作者： REN jie WU Yin-Zhong ZHU Shi-qun Department of Physics and Jiangsu Laboratory of Advanced Functional Material Changshu Institute of TechnologyChangshu 215500 School of Physical Science and Technology Soochow UniversitySuzhouJiangsu 215006

Using the adaptive time-dependent density-matrix renormalization group method,the dynamics of entanglement and quantum discord of an one-dimensional spin-1/2 XXZ chain is studied when anisotropic interaction quenches are applied at different *** dynamics of the quantum discord and pairwise entanglement between the nearest qubits shows that the entanglement and quantum discord will first oscillate and then approach to a constant *** quantum discord can be used to predict the quantum phase transition,while the entanglement cannot.

关键词： value quantum Heisenberg

Electrodeposition of photocatalytic TiO2 film on surface of alumina prepared by anodic oxidation

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中国有色金属学会会刊：英文版 2004年第Z1期14卷 173-177页

作者： zhang Xin-yu CHEN Tie-qun College of Mechanical Engineering South China University of TechnologyGuangzhou 510640 China College of Mechanical Engineering South China University of TechnologyGuangzhou 510640 China

A new electrochemical method to prepare photocatalytic TiO2 thin film was developed, by which the TiO2 was electrodeposited on surface of alumina by AC electrolysis in solution consisting of K2 [TiO(C2O4 )2] and C2H2O4. The deposited TiO2 thin film was primarily characterized by X-ray diffraction (XRD), scanning electronic microscopy (SEM) and energy dispersive spectrum (EDS) methods. The photocatalytic properties of this film were also studied by the photocatalytic degradation of methyl orange. The results show that the TiO2 film electrodeposited by this method is mainly in amorphous and with a little crystalline component mixed anatase and rutile. The surface of the alumina prepared by anodic oxidation is porous and the TiO2 electrodeposited on it is scattered and incompact. TiO2 thin film fixed on the surface of alumina shows photocatalytic activity to the degradation of methyl orange.

关键词： electrodeposition TiO2 film alumina anodic oxidation

Synthesis and electrochemical properties of Ti-doped Li_3V_2(PO_4)_3/C cathode materials

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Rare Metals 2015年第8期34卷 586-589页

作者： Sheng-Kui Zhong You Wang Ling Wu jie-qun Liu School of Iron and Steel Soochow University

Ti-doped Li3V2(PO4)3/C cathode materials were synthesized by a solid-state method. The properties of the samples were characterized by X-ray diffraction(XRD), scanning electronic microscopic(SEM), and electrochemical tests. XRD results indicate that Ti-doping and carbon coating do not alter the structure of Li3V2(PO4)*** images show that Ti-doping could reduce the particle size of Li3V2(PO4)3. Electrochemical tests reveal that Li3V1.95Ti0.05(PO4)3/C possesses the best electrochemical performances. It delivers the first discharge specific capacities of 124.4, 123.5, 120.9, and 114.9 m Ahág-1at0.1C, 1.0C, 2.0C, and 3.0C rates, respectively, and shows excellent cycling performance. The improved electrochemical performances are attributed to the Ti-doping,which increases the electronic and ionic conductivities of the cathode material.

关键词： Lithium-ion battery Cathode material Li3V2(PO4)3 T