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Effect of cation(Li^+, Na^+, K^+, Rb^+, Cs^+) in aqueous electrolyte on the electrochemical redox of Prussian blue analogue(PBA) cathodes

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journal of Energy Chemistry 2020年第1期29卷 31-38,I0002页

作者： Satyajit Phadke Roman Mysyk Meriem Anouti Laboratoire PCM2E Universite de ToursBatiment JParc de Grandmont37200 ToursFrance Parque Tecnologico C/Albert Einstein 48 CP01510 MilanoAlavaSpain

Prussian blue analogue(PBA)material is a promising cathode for applications in Na-ion and K-ion batteries which can support high c-rates for charge and *** this study,the material of composition[K2 CuIIFeII(CN)6]was synthesized and its structural and electrochemical redox behavior was investigated with 5 different alkali insertion cations(Li^+,Na^+,K^+,Rb^+,Cs^+).Galvanostatic measurements indicate that the redox potential strongly depends on the ionic radius of the inserted *** redox potential varies by 400 m V between using Li^+(0.79A)or Cs^+(1.73A)in the *** underlying modification of the Fe2^+/Fe3^+redox potential in PBA is proposed to be due to the weakening of the Fe–C bond in the *** hypothesis is supported by XRD measurements which reveal that the lattice parameter of the de-intercalated host structure follows the same trend of monotonic increase with the cation *** relatively minor volume changes accompanying the redox(1.2%–2.4%)allow the PBA to accommodate differently sized cations,although the structural hindrances are quite pronounced at high c-rates for the larger ones(Rb^+and Cs^+).Cycle aging studies indicate that the minimum capacity fade rate is observed in case of K^+ and Rb^+ containing *** peak intensity corresponding to the[220]crystallographic plane varies depending on the state of charge of PBA,since this plane contains the insertion *** to the sensitivity of the redox potential to the insertion cation coupled with the observed fast ion-exchange ability,the PBA material may find additional analytical applications such as ion sensing or filtration devices.

关键词： Prussian blue Cathode Alkali cations XRD Batteries

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考虑电力业务重要性的电力通信网关键节点识别

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电工技术学报 2019年第11期34卷 2384-2394页

作者：李昌超康忠健于洪国郑世超 ri Kihong 中国石油大学(华东)信息与控制工程学院

为了能够准确辨识出电力通信网的关键节点,给出了一种识别电力通信网关键节点的分析方法。首先,通过分析电力业务对电力通信网的要求和对电力网的影响,建立多层评估模型,采用量化赋值的方式对评价指标进行量化处理,提出针对非对称不完... 详细信息

为了能够准确辨识出电力通信网的关键节点,给出了一种识别电力通信网关键节点的分析方法。首先,通过分析电力业务对电力通信网的要求和对电力网的影响,建立多层评估模型,采用量化赋值的方式对评价指标进行量化处理,提出针对非对称不完全层次结构的层次分析法和基于云模型原理的改进熵权法,建立电力业务综合重要度评估体系;其次,结合实际电力业务分布情况建立加权网络,通过改进的权值降低法识别网络关键节点;最后,通过对两个实际电力通信网络的仿真验证了该方法的正确性。

关键词：电力网电力通信网电力业务网络拓扑加权网络

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一种识别电力系统关键输电线路的方法

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电力自动化设备 2020年第4期40卷 63-70页

作者：康忠健李昌超于洪国郑世超 ri Kihong 中国石油大学(华东)控制科学与工程学院山东青岛266580

电网关键输电线路的辨别有利于预防电网灾难事故,提高电力系统的安全稳定性。通过评估支路开断后系统潮流所受冲击的强弱,给出一种识别电力系统关键输电线路的方法。首先,基于等相角线理论,定义相角分割区,依据相角分割区和电气距离对... 详细信息

电网关键输电线路的辨别有利于预防电网灾难事故,提高电力系统的安全稳定性。通过评估支路开断后系统潮流所受冲击的强弱,给出一种识别电力系统关键输电线路的方法。首先,基于等相角线理论,定义相角分割区,依据相角分割区和电气距离对系统输电线路进行分区,基于广义熵指数理论,定义潮流增长率广义熵指数指标,评估支路开断后潮流冲击分布的均衡度;然后,从网络拓扑结构的角度,定义边的Katz-Bonacich中心性指标评估输电线路位置的重要性,并定义评估系统对潮流冲击抵抗能力的余度指标;最后,基于云模型原理,对各评估指标进行云模型转换,以云图的形式展现评估结果。通过对IEEE 30节点系统和新英格兰10机39节点系统进行仿真,验证了所提方法的正确性。

关键词：电力系统输电线路广义熵指数相角分割区 Katz-Bonacich中心性负载率

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Myxomycetes in a forest affected by great cormorant colony:a case study in Western Lithuania

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Fungal Diversity 2013年第2期59卷 131-146页

作者： Gražina Adamonytė Reda Iršėnaitė jurga Motiejūnaitė ričardas Taraškevičius DalytėMatulevičiūtė Institute of Botany Nature Research CentreŽaliųjųEžerųStr.49LT-08406 VilniusLithuania Institute of Geology and Geography Nature Research CentreŠevčenkos Str.13LT-03223 VilniusLithuania

Myxomycete distribution patterns were investigated in a colony of great cormorants(Phalacrocorax carbo sinensis)established in a pine forest in the Curonian Spit,western *** impact on the forest resulted both in vegetation changes and altered types and characteristics of myxomycete *** lowest myxomycete species richness was found in the most active part of the colony with the newest and most numerous *** myxomycete assemblages of the active part of the colony also showed the biggest differences from the reference zone(oligotrophic pine forest).The general abundance of myxomycetes in the territory of the colony was higher due to the presence of the species that are not characteristic of pine *** most abundant species in the territory were Badhamia apiculospora and Perichaena *** with other facultative coprophiles,such rare species as Comatricha mirabilis and Arcyria leiocarpa were found sporulating in the *** Bray-Curtis ordination revealed a tripole gradient of myxomycete distribution in the *** was hypothesized that the first continuum may reflect myxomycete assemblage transition from hypertrophic to oligotrophic habitat;the second continuum may reflect myxomycete assemblage distribution from habitats with limited diversity of available substrata,extreme levels of nutrients and high pH to habitats with high diversity of available substrata,moderate to high levels of nutrients and pH,and the third continuum may reflect myxomycete assemblage distribution from habitats with lower diversity of available substrata,low levels of nutrients and pH to habitats with high diversity of available substrata,moderate to high levels of nutrients and pH.

关键词： Bird colony Hypertrophication Mycetozoans Slime moulds

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Atomic coordination dictates vibrational characteristics and thermal conductivity in amorphous carbon

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npj Computational Materials 2022年第1期8卷 525-531页

作者： Ashutosh Giri Connor j.Dionne Patrick E.Hopkins Department of Mechanical Industrial and Systems EngineeringUniversity of Rhode IslandKingstonRI02881USA Department of Mechanical and Aerospace Engineering University of VirginiaCharlottesvilleVA22904USA Department of Materials Science and Engineering University of VirginiaCharlottesvilleVA22904USA Department of Physics University of VirginiaCharlottesvilleVA22904USA

We discuss the role of atomic coordination in dictating the vibrational characteristics and thermal conductivity in amorphous *** systematic atomistic simulations on amorphous carbon structures at varying mass densities show the significant role played by the ratio of sp2 to sp3 hybridized bonds in dictating the contributions from propagating(phonon-like)and non-propagating vibrational modes and their influence on the overall thermal conductivities of the ***,our results show that as the concentration of sp3-bonded carbon atoms increases,the thermal conductivity can be increased by four fold,which is attributed to enhanced contributions from propagating modes in these amorphous *** results shed more light into the role of atomic coordination on dictating heat transfer mechanisms in amorphous materials,and also provide a deeper understanding of the ability to tune the thermal conductivity of amorphous carbon structures through the control of the local atomic coordination.

关键词： amorphous conductivity thermal

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Effect of herpesvirus infection on pancreatic duct cell secretion

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World journal of Gastroenterology 2005年第38期11卷 5997-6002页

作者： Péter Hegyi Balázs rdg Zoltán Rakonczai jr Tamás Takács jános Lonovics Annamária Szabolcs Réka Sári András Tóth julius G Papp András Varró Mária K Kovács Mike A Gray Barry E Argent Zsolt Boldogki First Department of Medicine Department of Biology Division of Cardiovascular Pharmacology School of Cell and Molecular Biosciences

AIM： To examine the effect of acute infection caused by herpesvirus （pseudorabies virus, PRV） on pancreatic ductal secretion. METHODS： The virulent Ba-DupGreen （BDG） and non- virulent Ka-RREp01acgfp （KEG） genetically modified strains of PRV were used in this study and both of them contain the gene for green fluorescent protein （GFP）. Small intra/ interlobular ducts were infected with BDG virus （10^7 PFU/mL for 6 h） or with KEG virus （10^10 PFU/mL for 6 h）, while non-infected ducts were incubated only with the culture media. The ducts were then cultured for a further 18 h. The rate of HCO3 secretion [base efflux -λ（B）] was determined from the buffering capacity of the cells and the initial rate of intracellular acidification （1） after sudden blockage of basolateral base loaders with dihydro-4,4,- diisothiocyanatostilbene-2,2,-disulfonic acid （500 μmol/L） and amiloride （200 μmol/L）, and （2） after alkali loading the ducts by exposure to NH4Cl. All the experiments were performed in HCO3-buffered ringer solution at 37 ℃ （n = 5 ducts for each experimental condition）. Viral structural proteins were visualized by immunohistochemistry. Virallyencoded GFP and immunofluorescence signals were recorded by a confocal laser scanning microscope.RESULTS： The BDG virus infected the maj.rity of accessible cells of the duct as judged by the appearance of GFP and viral anUgens in the ductal cells. KEG virus caused a similarly high efficiency of infection. After blockage of basolateral base loaders, BDG infection significantly elevated -λB-） 24 h after the infection, compared to the non-infected group. However, KEG infection did not modify -λB-）. After alkali loading the ducts, -λB-） was significantly elevated in the BDG group compared to the control group 24 h after the infection. As we found with the inhibitor stop method, no change was observed in the group KEG compared to the non-infected group. CONCLUSION： Incubation with the BDG or KEG strains of PRV results in an effective i

关键词： Pancreas Hypersecretion Ductal cells Infection Pseudorabies virus

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Wide-Range Position-Tuning Lasers in Cholesteric Liquid Crystal

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Chinese Physics Letters 2013年第8期30卷 83-86页

作者： DAI Qin LI Yong WU jie ZHANG Meng WU ri-Na PENG Zeng-Hui YAO Li-Shuang School of Science Shenyang Ligong UniversityShenyang 110159 State Key Laboratory of Applied Optics Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033

A wedge liquid crystal(LC)cell is designed and manufactured,and a dye-doping cholesteric LC laser formed by mutual diffusion of the cholesteric LC with different pitches.A laser that is tunable in the 558–624 nm range is obtained under moderate optical pumping,with a tuning range of 66 nm and a laser spectral tuning resolution of 1 nm,so as to achieve the spatial position of a wide range of tunable *** laser threshold varies at different positions in the device,and the lasing thresholds of the dye-doping cholesteric LC cell at 40 and 9μm are 18 and 25μj/pulse,*** density of the photonic states is simulated in the experimental sample,and the result is in good agreement with the photonic band gap in our experiment,which not only explains the low-threshold laser at the band gap edge,but also predicts the experiment.

关键词： tuning tunable pumping

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PDE Constrained Optimization and Design of Frozen Mode Crystals

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Communications in Computational Physics 2008年第4期3卷 878-898页

作者： S.Chun j.S.Hesthaven Division of Applied Mathematics Brown UniversityProvidenceRI 02912USA.

We explore the use of PDE constrained nonlinear optimization techniques to optimize and design electromagnetic crystals which exhibit frozen mode *** is characterized by Van Hove singularities in the dispersion relation,e.g.,stationary reflection points and degenerate band edge ***,the optimization process modifies the dispersion relation by adjusting the geometries and material *** resulting algorithm is found to be capable of recovering all known crystal configurations as well as many new configurations,some of which display dramatically improved properties over previously used *** investigate both gyrotropic photonic crystals and degenerate band edge crystals as well as the more complex case of the oblique *** this latter case,we extend the investigation to the three-dimensional case to identify the first three-dimensional crystal exhibiting frozen mode behavior.

关键词： PDE constrained optimization method of matched asymptotics frozen mode photonic crystal.

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Hippocampus protection from apoptosis by Baicalin in a LiClpilocarpine-induced rat status epilepticus model through autophagy activation

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世界精神病学杂志 2023年第9期13卷 620-629页

作者： Bin Yang Han-Yu Wen ri-Sheng Liang Ting-Ming Lu Zheng-Yan Zhu Chun-Hua Wang Department of Neurosurgery Affiliated Union Hospital of Fujian Medical UniversityFuzhou 350001Fujian ProvinceChina Department of Neurosurgery Affiliated Union Hospital of Fujian Medical UniversityNeurosurgery Research Institute of Fujian ProvinceFuzhou 350001Fujian ProvinceChina

BACKGROUND Autophagy is associated with hippocampal injury following status epilepticus(SE)and is considered a potential therapeutic ***,an emerging multitherapeutic drug,has shown neuroprotective effects in patients with nervous system diseases due to its antioxidant *** To investigate the potential role of autophagy in LiCl-pilocarpine-induced *** The drugs were administered 30 min before *** staining showed that Baicalin attenuated hippocampal injury and reduced neuronal death in the *** blotting and terminal deoxynucleotidyl transferase dUTP nick end labeling assay confirmed that Baicalin reversed the expression intensity of cleaved caspase-3 and apoptosis in hippocampal CA1 following ***,western blotting and immunofluorescence staining were used to measure the expression of autophagy markers(p62/SQSTM1,Beclin 1,and LC3)and apoptotic pathway markers(cleaved caspase-3 and Bcl-2).RESULTS Baicalin significantly upregulated autophagic activity and downregulated mitochondrial apoptotic pathway ***,3-methyladenine,a commonly used autophagy inhibitor,was simultaneously administered to inhibit the Baicalin-induced autophagy,abrogating the protective effect of Baicalin on the mitochondrial apoptotic *** We illustrated that Baicalin-induced activation of autophagy alleviates apoptotic death and protects the hippocampus of SE rats.

关键词： Baicalin Status epilepticus Autophagy Mitochondrial apoptosis

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Modeling of the Frozen Mode Phenomenon and its Sensitivity Using Discontinuous Galerkin Methods

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Communications in Computational Physics 2007年第4期2卷 611-639页

作者： S.Chun j.S.Hesthaven Division of Applied Mathematics Brown UniversityProvidenceRI 02912USA.

We investigate the behavior and sensitivity of the frozen mode phenomenon in finite structures with anisotropic materials,including both magnetic materials and non-normal *** studies are done by using a high-order accurate discontinuous Galerkin method for solving Maxwells equations in the time *** confirm the existence of the phenomenon also in the time-domain and study carefully the impact of the finite crystal on the frozen *** sets the stage for a thorough study of the robustness of the frozen mode phenomenon,resulting in guidelines for which design parameters are most sensitive and acceptable tolerances.

关键词： Discontinuous Galerkin method Maxwell equation photonic crystals frozen mode.

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