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Electrochemical performance of all-solid lithium ion batteries with a polyaniline film cathode

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Journal of Energy Chemistry 2016年第1期25卷 93-100页

作者： Ji-Woo oh Rye-Gyeong oh Yongku Kang Kwang-Sun Ryu Department of Chemistry University of Ulsan Advanced Materials Divisions Korea Research Institute of Chemical Technology

We have prepared a high-density polyaniline（PANI） paste（50 mg/m L）, with similar physical properties to those of paints or pigments. The synthesis of PANI is confirmed by Fourier transform infrared（FT-IR） spectroscopy. The morphologies of PANI, doped PANI, and doped PANI paste are confirmed by scanning electron microscopy（SEM）. Particles of doped PANI paste are approximately 40–50 nm in diameter, with a uniform and cubic shape. The electrochemical performances of doped PANI paste using both liquid and solid polymer electrolytes have been measured by galvanostatic charge and discharge process. The cell fabricated with doped PANI paste and the solid polymer electrolyte exhibits a discharge capacity of ～87 μAh/cm2（64.0 m Ah/g） at the second cycle and～67 μAh/cm2（50.1 m Ah/g） at the 100 th cycle.

关键词： Lithium ion batteries Cathode Conducting polymer Polyaniline Flexible battery

Assessments of the effects of various fracture surface morphology on single fracture flow: A review

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International Journal of Mining Science and Technology 2023年第1期33卷 1-29页

作者： Min Gao Chengguo Zhang Joung oh School of Minerals and Energy Resources Engineering University of New South WalesSydney NSW 2052Australia

Natural rock joint permeability deviates from the classic fluid flow governing equations due to the inher-ent fracture surface roughness(i.e.,contact points,spatial correlation,matching,varying aperture,iso-lated voids,infilling material,tortuosity and channellings)and engineering disturbance such as *** improve the accuracy of fracture permeability evaluation,many efforts have been made in analytical,experimental,and numerical *** study reviews the modified mathematical gov-erning equations of fluid flow and classifies them based on different influencing factors,such as friction factor,aperture,tortuosity,inertia,and various in situ stress *** experimental and simulation techniques for the coupled normal-and shear-stress flow problems were assessed,and their advantages and disadvantages were also ***,different surface roughness descriptions and their impacts on mechanical and hydraulic behaviours were discussed,followed by the potential research directions for fracture flow problems.

关键词： Surface roughness Single fracture Nonlinear flow Coupled hydromechanical(HM)behaviours

Fabrication and Characterization of Tailored TiO_2 and WO_3/MWCNT Composites for Methylene Blue Decomposition

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催化学报 2011年第6期32卷 926-932页

作者： ZHU Lei MENG Zeda oh Won-Chun Department of A dvanced Materials Science ＆ Engineering Hanseo University Chungnam 356-706 Korea

A sol-gel method was used to prepare WO3/MWCNT-TiO2 *** photocatalytic activities were evaluated by the degradation of methylene blue (MB) solution under UV *** catalysts were characterized by X-ray diffraction,specific surface area measurement,energy-dispersive X-ray analysis,transmission and scanning electron *** MB solutions of 100 ml were photodegraded by a small amount of the WO3/MWCNT-TiO2 composite under UV light *** photocatalytic data showed that the WO3/MWCNT-TiO2 composite achieved a high rate of MB *** was attributed to the use of MWCNT which can absorb UV light to create photo-induced electrons,strong adsorption of dye molecules on the photocatalyst,and reduced recombination rate of electron-holes in the WO3/MWCNT-TiO2 composite due to the introduction of the WO3 semiconductor.

关键词：固体超强碱氧化钙硝酸钾氧化铝氧化锆氢氧化钾硝酸钙

Data De-identification Framework

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Computers, Materials & Continua 2023年第2期74卷 3579-3606页

作者： Junhyoung oh Kyungho Lee Center for Information Security Technologies Korea UniversitySeoul02841Korea School of Cybersecurity Korea UniversitySeoul02841Korea

As technology develops,the amount of information being used has increased a *** company learns big data to provide customized services with its ***,collecting and analyzing data of the data subject has become one of the core competencies of the ***,when collecting and using it,the authority of the data subject may be *** data often identifies its subject by itself,and even if it is not a personal information that infringes on an individual’s authority,the moment it is connected,it becomes important and sensitive personal information that we have never thought ***,recent privacy regulations such as GDPR(GeneralData ProtectionRegulation)are changing to guarantee more rights of the data *** use data effectively without infringing on the rights of the data subject,the concept of de-identification has been *** and companies can make personal information less identifiable through appropriate de-identification/pseudonymization and use the data for the purpose of statistical ***-identification/pseudonymization techniques have been studied a lot,but it is difficult for companies and researchers to know how to de-identify/pseudonymize *** is difficult to clearly understand how and to what extent each organization should take deidentification ***,each organization does not systematically analyze and conduct the situation but only takes minimal action while looking at the guidelines distributed by each *** solved this problem from the perspective of risk *** steps are required to secure the dataset starting from pre-processing to releasing the *** can analyze the dataset,analyze the risk,evaluate the risk,and treat the risk *** outcomes of each step can then be used to take appropriate action on the dataset to eliminate or reduce its ***,we can release the dataset under its own *** series of processes were reconstr

关键词： Privacy de-identification anonymization pseudonymization information security

Factors shaping community structure of endophytic fungi–evidence from the Pinus-Viscum-system

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Fungal Diversity 2013年第3期60卷 55-69页

作者： Derek Peršoh Systematische Botanik und Mykologie Ludwigs-Maximilians Universität MünchenMenzinger Straße 6780638 MünchenGermany Abteilung Mykologie Universität BayreuthUniversitätsstraße 30–NW I95440 BayreuthGermany

Endophytic fungal communities have been shown to be highly diverse in almost every host plant species analyzed so ***,the factors shaping their compositions are largely *** elucidate the impact of various factors,10 independent replicates of DNA extracts from each of 17 surface-sterilized leaf and stem samples were analyzed by pyrosequencing of fungal ITS1 rRNA gene ***,154 fungal OTUs(operational taxonomic units),represented by 953,385 sequences,were found in at least 2 samples from Viscum album *** and/or its host Pinus *** from earlier,cultivation-based assessments,the communities were dominated by OTUs related to the genus Mortierella and OTUs not assignable to a certain fungal ***,Ascomycota were still the most diverse group in terms of OTU richness and already hypothesized organ and host preferences of certain endophytic Xylariaceae isolated from the Pinus-Viscum-system could be *** species and organ type were also the major factors shaping the detected fungal *** two plant species clearly differed according to the endophytic fungal communities,but only stems and needles of Pinus were inhabited by significantly different fungal ***,only the 1 and 3 year old stem sections differed according to the endophytic fungal community,while differently aged leaves of both plants were indistinguishable in this *** of the organs had no impact on fungal communities in Pinus,but shorter internodes and smaller leaves showed at least a tendency to differ from the corresponding larger organs in *** communities also differed slightly between the two sampling sites,lying 200 km apart,and between the three sampling *** the samples were drawn within 15 days,this finding indicates that seasonal shifts clearly outweigh aging effects in host plant with perennial *** results therefore provide strong evidence against a linear developm

关键词： Endophytic fungi Pyrosequencing Host preference Stems Leaves Organ age Pinus sylvestris Viscum album Genetic abundance Name assignment

Plant-associated fungal communities in the light of meta’omics

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Fungal Diversity 2015年第6期75卷 1-25页

作者： Derek Peršoh Ruhr-Universität Bochum AG GeobotanikGebäude ND 03/170Universitätsstraße 15044780 BochumGermany

Approaches for the cultivation-independent analysis of microbial communities are summarized as meta’omics,which predominantly includes metagenomic,-transcriptomic,-proteomic and-metabolomic *** have shown that endophytic,root-associated and soil fungal communities are strongly shaped by associated plant *** impact of plant identity on the composition of its litterssociated fungal community remains to be disentangled from the impact of litter *** composition of the plant community also shapes the fungal *** strikingly,adjacent plant species may share mycorrhizal symbionts even if the plants usually have different types of mycorrhizal fungi associated with them(ectomycorrhizal,ericoid and arbuscular mycorrhizal fungi).Environmental parameters weakly explain fungal community composition globally,and their effect is inconsistent at local and regional *** in similarity among communities with increasing distance(*** decay)has been reported from local to global *** pattern is only exceptionally caused by spatial dispersal limitation of fungal propagules,but mostly due to the inability of the fungi to establish at the particular locality(*** filtering or competitive exclusion).Fungal communities usually undergo pronounced seasonal changes and also differ between consecutive *** indicates that development of the communities is usually not solely ***’omic studies challenge the classical view of plant litter *** show that mycorrhizal and(previously)endophytic fungi may be involved in plant litter decomposition and only partly support the idea of a succession from an Ascomycota to a Basidiomycota-dominated ***,vertical separation of saprotrophic and mycorrhizal species in soil and sequential degradation from easily accessible to‘recalcitrant’plant compounds,such as lignin,can probably not be *** current models of litter decomposition may

关键词： Meta’omics Metaomics Fungal community Metagenomics Metaproteomics Metatranscriptomics Metametabolomics Phyllosphere fungi Endophytic fungi Litter decomposition Decomposer fungi Root-associated fungi Arbuscular mycorrhiza Ectomycorrhiza Ericoid mycorrhiza Soil fungi Functional diversity Environmental processes Distance decay Environmental filtering Saisonality Temporal shift Fungal traits

Quantitative in situ measurement of optical force along a strand of cleaved silica optical fiber induced by the light guided therewithin

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Photonics Research 2021年第10期9卷 2016-2023页

作者： MIKKO PARTANEN HYEONWOO LEE KYUNGHWAN oh Photonic Device Physics Laboratory Department of PhysicsYonsei UniversitySeoul 03722Republic of Korea Photonics Group Department of Electronics and NanoengineeringAalto University00076 AaltoFinland

We propose an optomechanical system to quantify the net force on a strand of cleaved silica optical fiber in situ as the laser light is being guided through *** strands of the fiber were bonded to both sides of a macroscopic oscillator,whose movements were accurately monitored by a Michelson *** laser light was propagating with variable optical powers and frequency ***,we discovered that the driving force for the oscillator consisted of not only the optical force of the light exiting from the cleaved facets but also the tension along the fiber induced by the light guided *** net driving force was determined only by the optical power,refractive index of the fiber,and the speed of light,which pinpoints its fundamental origin.

关键词： fiber optical interferometer

Methods applied in Australian industry to evaluate coal mine slope stability

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International Journal of Mining Science and Technology 2020年第2期30卷 151-155页

作者： Alison McQuillan Ismet Canbulat Joung oh School of Minerals and Energy Resources Engineering UNSW SydneyAustralia

Strata failure is a principal hazard in open cut coal mining as it has the potential to cause multiple *** to the excavation of any slope,a geotechnical assessment should review the likely slope performance,including the risk of slope *** to manage this risk to an acceptable level should accompany the geotechnical analysis.A survey of 43 practising geotechnical engineers indicated that kinematic and 2D limit equilibrium analyses were the methods most commonly applied to analyse excavated slope *** these methods are well established and widely applied in the broad rock engineering disciplines(***,hard rock),a recent review of over 60 slope failures suggests these methods have limited suitability for modelling the complex failure mechanisms observed in excavated coal mine *** techniques do not adequately capture the rock mass component of excavated slope failure and do not provide a geospatial location of potential failure,while 2D limit equilibrium techniques do not adequately capture the 3D mechanisms of excavated slope *** which do consider the 3D mechanisms of slope failure are summarized for industry consideration and application.

关键词： Slope stability 2D 3D Open cut coal mine Limit equilibrium

Climatic Classification over Asia during the Middle Holocene Climatic Optimum Based on PMIP Models

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Journal of Earth Science 2016年第1期27卷 123-129页

作者： Hyuntaik oh Ho-Jeong Shin Center for Marine Environmental Impact Assessment National Fisheries Research and Development Institute Ocean Circulation and Climate Research Division Korea Institute of Ocean Science and Technology

When considering potential global warming projections, it is useful to understand the impact of each climate condition at 6 kyr before present. Asian paleoclimate was simulated by performing an integration of the multi-model ensemble with the paleoclimate modeling intercomparison project（PMIP） models. The reconstructed winter（summer） surface air temperature at 6 kyr before present was 0.85 oC（0.21 oC） lower（higher） than the present day over Asia, 60oE-150oE, 10oN-60oN. The seasonal variation and heating differences of land and ocean in summer at 6 kyr before present might be much larger than present day. The winter and summer precipitation of 6 kyr before present were 0.067 and 0.017 mm·day-1larger than present day, respectively. The Group B climate, which means the dry climates based on K？ppen climate classification, at 6 kyr before present decreased 17% compared to present day, but the Group D which means the continental and microthermal climates at 6 kyr before present increased over 7%. Comparison between the results from the model simulation and published paleo-proxy record agrees within the limited sparse paleo-proxy record data.

关键词： paleoclimate modeling intercomparison project (PMIP) paleoclimate global warming,Asian continent.