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Neuroscience Bulletin 2017年第6期33卷 653-663页

作者： zi-Fang Zhao Xue-Zhu Li You wan Neuroscience Research Institute Peking UniversityBeijing 100191China Department of Neurobiology School of Basic Medical SciencesPeking UniversityBeijing 100191China Key Laboratory for Neuroscience Ministry of Education/National Health and Family Planning CommissionPeking UniversityBeijing 100191China

The local field potential（LFP） is a signal reflecting the electrical activity of neurons surrounding the electrode tip. Synchronization between LFP signals provides important details about how neural networks are organized. Synchronization between two distant brain regions is hard to detect using linear synchronization algorithms like correlation and coherence. Synchronization likelihood（SL） is a non-linear synchronization-detecting algorithm widely used in studies of neural signals from two distant brain areas. One drawback of non-linear algorithms is the heavy computational burden. In the present study, we proposed a graphic processing unit（GPU）-accelerated implementation of an SL algorithm with optional 2-dimensional time-shifting. We tested the algorithm with both artificial data and raw LFP data. The results showed that this method revealed detailed information from original data with the synchronization values of two temporal axes,delay time and onset time, and thus can be used to reconstruct the temporal structure of a neural network. Our results suggest that this GPU-accelerated method can be extended to other algorithms for processing time-series signals（like EEG and f MRI） using similar recording techniques.

关键词： Local field potential Synchronization Temporal Time-shifting Parallel computing

Paracentral Acute Middle Maculopathy Treated with Acupuncture:A Case Report

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Chinese Journal of Integrative Medicine 2020年第9期26卷 709-712页

作者： WU Jian-guo HUANG zi-yang ZHOU wan-yu Department of Ophthalmology Xiyuan HospitalChina Academy of Chinese Medical SciencesBeijing(100091)China

Paracentral acute middle maculopathy(PAMM)was first named by Sarraf,et al in 2013,and was categorized as one of the acute macular neuroretinopathies(AMNs).To date,there is still no effective approach to this *** repor... 详细信息

关键词： Acupuncture acute acupuncture

Effect of AI_(2)O_(3)and MgO on crystallization and structure of Ca0-Si0_(2)-B_(2)0_(3)-based fluorine-free mold flux

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Journal of Iron and Steel Research International 2021年第5期28卷 552-562页

作者： Jun-yu Chen wan-lin wang Le-jun Zhou zi-hang Pan School of Metallurgy and Environment Central South UniversityChangsha 410083HunanChina National Center for International Cooperation of Clean Metallurgy Changsha 41(K)83HunanChina

The crytallization behavior and melt structure of the CaO-Si0^(2-)B20_(3)-based fluorine-free mold fux were *** results show that the crytallization of the mold fux was first inhibited and then promoted with the increase in Al_(2)0_(3) content from 4 to 12 wt.%.However,it was enhanced by MgO in the range of 2-10 wt.%.The results of Fourier transform infrared spectroscopy and Raman spectroscopy showed that Al_(2)0_(3) worked as a network former in the mold flux melt when its content was in the range of 4-8 wt.%,whereas it worked as the network breaker to provide 0^(2-)when its content was in the range of 8-12 wt.%.In addition,the combined efects from the charge compensation by Mg^(2+)and the network broken by 0^(2-)led to the increase in some typicalT-O-T(AI-O-A1,B-O-B,etc.,)and simpler structural units(Q^(2)(Si),B_^(O-)in the[B0_(2)0^(-)],.etc.)when the MgO content was in the range of 2-6 wt.%.The continuous increase in 0^(2-)provided by the addition of MgO from 6 to 10 wt.%further depolymerized the network of the melt and fnally caused fast crystallizationo.

关键词： Crystallization Single hot thermocouple technique Melt structure Fluorine-free mold flux

Synthesis of Compact NaA Zeolite Membrane by Microwave Heating Method

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Chinese Chemical Letters 2003年第8期14卷 874-876页

作者： Zhi Lin CHENG zi Sheng CHAO Hui Lin wan State Key Laboratory for Physical Chemistry of Solid Surface Department of ChemistryXiamen UniversityXiamen 361005

A continuous and dense NaA zeolite membrane was synthesized by microwave heating method while employing a multi-step seeding LTA zeolite with the average size of 120 nm. The gas H2/N2 mixture separating results indicated that the mixture selectivity increased with increasing of synthesis times. In addition, selectivity of the three-step synthesis was higher than the value(3.74) expected from Kundsen diffusion.

关键词： Microwave heating NaA zeolite membrane gas separation.

Adsorption of Au(Ⅲ) by amino-modified monodispersed PGMA microspheres and deposition of gold nanoparticles

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Rare Metals 2018年第3期37卷 196-203页

作者： Fu-Chun wang Jun-Mei Zhao wan-Kun wang zi-Zheng Tong School of Materials and Metallurgical Engineering Guizhou Institute of Technology Institute of Process Engineering Chinese Academy of Sciences

Monodispersed poly（glycidyl methacrylate）（PGMA） microspheres with various amounts of amino groups（PGMA-NH2） were used to adsorb Au（Ⅲ） from simulated wastewaters. Gold nanoparticle-coated PGMA functional microspheres can be directly obtained via the adsorption process. The adsorption kinetics follows pseudo-second model, and 10 min is enough for reaching at equilibrium. The adsorption isotherm follows Langmuir model, and the adsorption amounts for Au（Ⅲ） are 8.25 and 21.75 mol·kg^-1 at 298 and 328 K, respectively. The relative separation coefficients between Au（Ⅲ）, Pt（Ⅵ）, Pd（Ⅱ）and Co（Ⅱ）, Cu（Ⅱ）; Ni（Ⅱ）, Fe（Ⅲ） are all higher than 100 when 1 〈 pH 〈 3. Furthermore, the characterization analysis of X-ray diffraction（XRD）, thermogravimetrydifferential scanning calorimetry（TG-DSC）, scanning electron microscopy-energy dispersive spectroscopy（SEM-EDS）, transmission electron microscopy（TEM） and Fourier transform infrared spectroscopy（FTIR） confirms that AuCl4^-has been reduced to Au^0 nanoparticles and deposited onto the surface of PGMA-NH2. The current work shows a good prospect for PGMA-NH2 to be a valid adsorbent for the recovery of gold and the possible fabrication of gold nanoparticles by reduction-deposition process without any reductant.

关键词： PGMA microspheres AuCl4^- Amino groups Adsorption Reduction-deposition Elemental gold

Ferritinophagy: A new idea for liver diseases regulated by ferroptosis

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Hepatobiliary & Pancreatic Diseases International 2024年第2期23卷 160-170页

作者： zi-Bing Qian Jun-Feng Li wan-Yuan Xiong Xiao-Rong Mao The First Clinical Medical College of Lanzhou University Lanzhou 730000China Institute of Infectious Diseases The First Hospital of Lanzhou UniversityLanzhou 730000China Department of Infectious Disease The First Hospital of Lanzhou UniversityLanzhou 730000China

Background:The discovery of regulatory cell death has led to a breakthrough in the therapeutic *** forms of cell death,such as necrosis,apoptosis,pyroptosis,autophagy,and ferroptosis,play an important role in the development of liver *** general,more than one form of cell death pathways is responsible for the disease ***,it is particularly important to study the regulation and interaction of various cell death forms in liver *** sources:We performed a PubMed search up to November 2022 with the following keywords:ferritinophagy,ferroptosis,and liver *** also used terms such as signal path,inducer,and inhibitor to supplement the query ***:This review summarized the basic characteristics of ferritinophagy and ferroptosis and the regulation of ferroptosis by ferritinophagy and reviewed the key targets and treatment strategies of ferroptosis in different liver ***:Ferritinophagy is a potential therapeutic target in ferroptosis-related liver diseases.

关键词： Ferritinophagy Ferroptosis Liver disease

Weldability of Low Carbon Transformation Induced Plasticity Steel

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Journal of Iron and Steel Research International 2008年第5期15卷 61-65,87页

作者： ZHANG Mei LI Lin FU Ren-yu ZHANG Ji-cheng wan.zi Department of Material Science and Engineering Shanghai University Shanghai 200072 China RDC Shanghai Huizhong Automotive Manufacturing Co Ltd Shanghai 200122 China

Transformation induced plasticity （TRIP） steel exhibited high or rather high carbon equivalent （CE） because of its chemical composition, which was a particularly detrimental factor affecting weldability of steels. Thus the weldability of a TRIP steel （grade 600） containing （in mass percent, %） 0.11C-1. 19Si-1.67Mn was extensively studied. The mechanical properties and impact toughness of butt joint, the welding crack susceptibility of weld and heat affected zone （HAZ） for tee joint, control thermal severity （CTS） of the welded joint, and Y shape 60° butt joint were measured after the gas metal arc welding （GMAW） test. The tensile strength of the weld was higher than 700 MPa. Both in the fusion zone （FZ） and HAZ for butt joint, the impact toughness was much higher than 27 J, either at room temperature or at -20 ℃, indicating good low temperature impact ductility of the weld of TRIP 600 steel. In addition, welding crack susceptibility tests revealed that weldments were free of surface crack and other imperfection. All experimental results of this steel showed fairly good weldability. For application, the crossmember in automobile made of this steel exhibited excellent weldability, and fatigue and durability tests were also accomplished for crossmember assembly.

关键词： TRIP steel weldability welding crack susceptibility mechanical property impact toughness

A Novel Polarizer Made from Two-Dimensional Photonic Bandgap Materials

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Chinese Physics Letters 2001年第8期18卷 1082-1084页

作者： ZHANG Chun QIAO Feng wan Jun zi Jian National Key Laboratory of Surface Physics Fudan UniversityShanghai 200433

We demonstrate theoretically that two-dimensional photonic bandgap materials are indeed perfect polarizers provided that they have a proper photonic band structure along the incident direction of *** kind of polarizer is fundamentally different from the conventional *** can function in a wide frequency range with high performance and its size can be made very compact,which renders it useful as a micropolarizer in micro-optics.

关键词： polarizer Polar render

Stimulating factors for regulation of osteogenic and chondrogenic differentiation of mesenchymal stem cells

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World Journal of Stem Cells 2023年第5期15卷 369-384页

作者： Jia-Qi Zhou Hao-Yang wan.zi-Xuan wang Nan Jiang Division of Orthopaedics and Traumatology Department of OrthopaedicsNanfang HospitalSouthern Medical UniversityGuangzhou 510515Guangdong ProvinceChina

Mesenchymal stem cells(MSCs),distributed in many tissues in the human body,are multipotent cells capable of differentiating in specific *** is usually considered that the differentiation process of MSCs depends on specialized external stimulating factors,including cell signaling pathways,cytokines,and other physical *** findings have revealed other underrated roles in the differentiation process of MSCs,such as material morphology and *** relevant achievements have substantially advanced the applicability of MSCs,some of these regulatory mechanisms still need to be better ***,limitations such as long-term survival in vivo hinder the clinical application of MSCs *** review article summarizes current knowledge regarding the differentiation patterns of MSCs under specific stimulating factors.

关键词： Mesenchymal stem cells Differentiation Osteogenic Chondrogenic Literature review

Pair production in strong SU（2） background fields

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Frontiers of physics 2017年第5期12卷 143-150页

作者： Mo-Ran Jia zi-Liang Li Chong Lv Feng wan Bai-Song Xie College of Nuclear Science and Technology Beijing Normal University Beijing 100875 China Beijing Radiation Center Beijing 100875 China

Fermion particle pair production in strong SU（2）-gauge chromoelectric fields is studied using the Boltzmann-Vlasov equation in a classical way. The existence of a preproduction process in a classical description is shown using the distribution evolution of non-Abelian particle production. It is interesting to find that the distribution of the particle number density is centered on two islands and shows a split on the color charge sphere as it evolves, ultimately reaching a steady state that is related to the amplitude and variation of the field.

关键词： pair production SU(2)-gauge chromoelectric field classical and semiclassical technique Boltzmann-Vlasov equation