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An Efficient Three-Factor Authenticated Key Agreement Technique Using FCM Under HC-ioT Architectures

Computers, Materials & Continua 2022年第7期72卷 1373-1389页

作者： Chandrashekhar Meshram Agbotiname Lucky imoize Sajjad Shaukat Jamal Parkash Tambare Adel R.Alharbi iqtadar Hussain Department of Post graduate studies and research in Mathematics Jayawanti Haksar Government Post-Graduation CollegeCollege of Chhindwara UniversityBetul460001M.P.India Department of Electrical and Electronics Engineering Faculty of EngineeringUniversity of LagosAkokaLagos100213Nigeria Department of Electrical Engineering and information Technology Institute of Digital CommunicationRuhr University44801BochumGermany Department of Mathematics College of ScienceKing Khalid UniversityAbhaSaudi Arabia Water Resources&Applied Mathematics research Lab Nagpur440027India College of Computing and information Technology University of TabukTabuk71491Saudi Arabia Mathematics Program Department of MathematicsStatistics and PhysicsCollege of Arts and SciencesQatar University2713DohaQatar

The Human-Centered internet of Things(HC-ioT)is fast becoming a hotbed of security and privacy *** users can establish a common session key through a trusted server over an open communication channel using a three-party authenticated key *** of the early authenticated key agreement systems relied on pairing,hashing,or modular exponentiation processes that are computationally intensive and *** order to address this problem,this paper offers a new three-party authenticated key agreement technique based on fractional chaotic *** new scheme uses fractional chaotic maps and supports the dynamic sensing of HC-ioT devices in the network architecture without a password *** projected security scheme utilized a hash function,which works well for the resource-limited HC-ioT *** results show that our new technique is resistant to password guessing attacks since it does not use a ***,our approach provides users with comprehensive privacy protection,ensuring that a user forgery attack causes no ***,our new technique offers better security features than the techniques currently available in the literature.

关键词： Three-party authenticated key agreement anonymity fractional chaotic maps Chebyshev polynomial password table human-centered internet of things(HC-ioT)

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Depigmentory Effects of Keishibukuryogankayokuinin in Human Epidermal Melanocytes

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Health 2019年第7期11卷 869-879页

作者： Kaho Akimoto Takuji Yamaguchi Yuna Naraoka Ailing Hu Hiroyuki Kobayashi Department of Hospital Administration Graduate School of Medicine Juntendo University Tokyo Japan Center for Advanced Kampo Medicine and Clinical research Graduate School of Medicine Juntendo University Tokyo Japan Japanese Center for research on Women in Sport Juntendo University Tokyo Japan

Keishibukuryogankayokuinin (KBY) is a traditional Japanese herbal medicine widely used to treat skin pigmentation. The scientific basis for its use is, however, unclear, and studies evaluating its mechanism and effectiveness are sparse. in this study, we compared the tyrosinase inhibitory effects of KBY and Keishibukuryogan (KB, which has the same composition of KBY, except Coix Seed [CS]) and CS under exposure to UV radiation as well as under non-exposure conditions. Neonatal human epidermal melanocytes obtained from a darkly pigmented donor were used. These cells were cultured in a final concentration of 500 μg/ml or 1000 μg/ml, to which KBY, KB, and CS were added. After incubation for 72 h, cells were stained with Fontana-Masson stain and counted. Tyrosinase activity was measured by its dopa oxidase activity, and tyrosinase expression was estimated using real-time PCR. For UV radiation, cells were exposed to UVB radiation for 90 s per day for 3 days. Under non-exposure conditions, tyrosinase activity significantly increased with both KBY and KB but significantly decreased with CS, regardless of the concentration. in addition, tyrosinase expression significantly decreased but only with KBY at both concentrations. Under UV radiation exposure, tyrosinase activity significantly increased with KBY and KB at both concentrations while tyrosinase expression significantly decreased with KBY and KB;a significant increase was, however, observed with CS at both concentrations. These results suggest that taking KBY after sunburn is effective against skin pigmentation, and the combination of KB and CS is useful for skin depigmentation.

关键词： Keishibukuryogankayokuinin Coix Seed UVB Tyrosinase Melanocytes

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Exploring genes that control microglial heterogeneity and transition

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Neural Regeneration research 2021年第12期16卷 2397-2398页

作者： Tomomi Okajima Fuminori Tsuruta graduate school of Life and Environmental Sciences University of TsukubaTsukubaIbarakiJapan Master’s and Doctoral Programs in Biology Faculty of Life and Environmental SciencesUniversity of TsukubaTsukubaIbarakiJapan Master’s and Doctoral Program in Neuroscience Graduate School of Comprehensive Human SciencesUniversity of TsukubaTsukubaIbarakiJapan PhD Program in Human Biology School of Integrative and Global MajorsUniversity of TsukubaTsukubaIbarakiJapan PhD Program in Humanics School of Integrative and Global MajorsUniversity of TsukubaTsukubaIbarakiJapan

Microglia,which comprise approximately 10%of total cells in the brain,are the resident immune cells in the central nervous system and contribute to maintaining the brain homeostasis through monitoring their microenvironment(Kettenmann et al.,2011).Recent studies have reported that microglia also regulate neural circuit formation after *** functional transition in microglia has been considered to correlate with their morphological changes over time.

关键词： al. homeostasis transition

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A Storage Optimization Scheme for Blockchain Transaction Databases

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Computer Systems Science & Engineering 2021年第3期36卷 521-535页

作者： Jingyu Zhang Siqi Zhong Jin Wang Xiaofeng Yu Osama Alfarraj school of Computer and Communication Engineering Changsha University of Science and TechnologyChangsha410114China school of Systems Engineering National University of Defense TechnologyChangsha410000China school of information Science and Engineering Fujian University of TechnologyFuzhou350000China school of Business Nanjing UniversityNanjing210093China Computer Science Department Community CollegeKing Saud UniversityRiyadh11437Saudi Arabia

As the typical peer-to-peer distributed networks, blockchain systemsrequire each node to copy a complete transaction database, so as to ensure newtransactions can by verified independently. in a blockchain system (e.g., bitcoinsystem), the node does not rely on any central organization, and every node keepsan entire copy of the transaction database. However, this feature determines thatthe size of blockchain transaction database is growing rapidly. Therefore, with thecontinuous system operations, the node memory also needs to be expanded tosupport the system running. Especially in the big data era, the increasing networktraffic will lead to faster transaction growth rate. This paper analyzes blockchaintransaction databases and proposes a storage optimization scheme. The proposedscheme divides blockchain transaction database into cold zone and hot zone usingexpiration recognition method based on Least Recently Used (LRU) algorithm. itcan achieve storage optimization by moving unspent transaction outputs outsidethe in-memory transaction databases. We present the theoretical analysis on theoptimization method to validate the effectiveness. Extensive experiments showour proposed method outperforms the current mechanism for the blockchaintransaction databases.

关键词： Blockchain distributed systems transaction databases

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Development of aryl-containing dipyrrolyldiketone difluoroboron complexes(BONEPYs):Tune the hydrogen bond o-C—H…F for fluoride recognition

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Chinese Chemical Letters 2020年第5期31卷 1317-1321页

作者： Xin-Dong Jiang Zhumei Shao Changliang Sun Shuai Yue Rong Shang Yohsuke Yamamoto College of Applied Chemistry Shenyang University of Chemical TechnologyShenyang 110142China Department of Chemistry Graduate School of ScienceHiroshima UniversityHigashi-Hiroshima 739-8526Japan

Dipyrrolyldiketone difluoroboron complexes(BONEPYs)were synthesized by condensation of the corresponding pyrroles and malonyl chloride followed by treatment with BF3·*** aryl-substituted pyrrole is introduced to form a cyclic system in order to investigate anion binding *** BONEPYs 1-3 the o-H of the aryl group forms hydrogen bonding with F to give a more table *** contrast,the intramolecular hydrogen-bonded BONEPY endo-4 is more stable than its exo *** adding F,the hydrogen bonds must be broken first to give 4·(3)*** to the electron-rich group(-OMe),the o-H of the phenyl group can hardly interact with F via hydrogen bonding to give the less stable complex4-(5)*** energy diffe rences between the different conformations were calculated using DFT methods,which is consistent to the experimental observations.

关键词： BONEPY Hydrogen bond Fluorescent dye Fluoride anion Probe

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New Replacement Name for Rana paradoxa Mocquard,1890 with Designations of Lectotypes for Rana paradoxa and Rana conspicillata Günther,1872:Both Synonymized with Limnonectes kuhlii (Tschudi,1838) (Dicroglossidae:Dicroglossinae)

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Asian Herpetological research 2013年第3期4卷 187-189页

作者： Masafumi MATSUi Alain DUBOiS Annemarie OHLER graduate school of Human and Environmental studies Kyoto UniversitySakyoKyoto 606-8501Japan Vertébrés:Reptiles et Amphibiens UMR 7205 OSEBDépartement Systématique et EvolutionMuséum National d'Histoire NaturelleCP 3025 rue Cuvier75005 ParisFrance

Fanged frogs, now called Limnonectes kuhlii, from Borneo are remotely related to true Javanese L. kuhliL For future taxonomy of Bornean fanged frogs, we fix the nomenclatural status of two existing names, Rana conspicillata Giunther, 1872 and Rana paradoxa Mocquard, 1890. Morphological comparison of the type-series revealed heterospecific relationships of the two species. For R. conspicillata, we designate BMNH 1947.***.29.20 as the lectotype, and for R. para doxa, we also designate MNHN 1889.222 as the lectotype and propose a replacement name Limnonectes mocquardi, in order to stabilize their nomenclature.

关键词： fanged frogs Limnonectes kuhlii Borneo nomenclature lectotype replacement name

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Shifting from homogeneous to heterogeneous surfaces in estimating terrestrial evapotranspiration: Review and perspectives

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Science China Earth Sciences 2022年第2期65卷 197-214页

作者： Yuanbo LiU Guoyu QiU Hongsheng ZHANG Yonghui YANG Yinsheng ZHANG Quan WANG Wenzhi ZHAO Li JiA Xibin Ji Yujiu XiONG Chunhua YAN Ning MA Shumin HAN Yifan CUi Nanjing institute of Geography and Limnology Chinese Academy of SciencesNanjing 210008China school of Environment and Energy Peking University Shenzhen Graduate SchoolShenzhen 518055China Laboratory for Climate and Ocean-Atmosphere studies Department of Atmospheric and Oceanic SciencesSchool of PhysicsPeking UniversityBeijing 100081China Key Laboratory for Agricultural Water Resources Center for Agricultural Resources ResearchInstitute of Genetics and Developmental BiologyChinese Academy of SciencesShijiazhuang 050022China Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China Center for Excellence in Tibetan Plateau Earth Sciences Chinese Academy of SciencesBeijing 100101China Faculty of Agriculture Shizuoka UniversityShizuoka 422-8529Japan Northwest institute of Eco-Environment and Resources Chinese Academy of SciencesLanzhou 730000China Key Laboratory of Ecohydrology of inland River Basin Chinese Academy of SciencesLanzhou 730000China Aerospace information research institute Chinese Academy of SciencesBeijing 100094China school of Civil Engineering Sun Yat-Sen UniversityGuangzhou 510275China Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China

Terrestrial evapotranspiration(ET)is a crucial link between Earth’s water cycle and the surface energy *** measurement and estimation remain a major challenge in geophysical,biological,and environmental *** work,represented by Dalton and Penman,and the development of theories and experiments on turbulent exchange in the atmospheric boundary layer(ABL),laid the foundation for mainstream methodologies in ET *** the 1990s,eddy covariance(EC)systems and satellite remote sensing have been widely applied from cold to tropical and from arid to humid *** cover water surfaces,wetlands,forests,croplands,grasslands,barelands,and urban areas,offering an exceptional number of reports on diverse ET *** nocturnal ET,hysteresis between ET and environmental forces,turbulence intermittency,island effects on heterogeneous surfaces,and phase transition between underlying surfaces are examples of reported new phenomena,posing theoretical and practical challenges to mainstream ET ***,based on non-conventional theories,new methods have emerged,such as maximum entropy production and nonparametric ***,high-frequency on-site observation and aerospace remote sensing technology in combination form multi-scale observations across plant stomata,leaves,plants,canopies,landscapes,and *** promotes an insightful understanding of diverse ET processes and synthesizes the common mechanisms of the processes between and across spatial and temporal *** the recent achievements in conception,model,and technology serve as the basis for breaking through the known difficulties in ET *** expect that they will provide a rigorous,reliable scientific basis and experimental support to address theoretical arguments of global significance,such as the water-heat-carbon cycle,and solve practical needs of national importance,including agricultural irrigation and food security,precise manageme

关键词： Evapotranspiration Atmospheric boundary layer Heterogeneous surface Uncertainty

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Unsupported nanoporous palladium‐catalyzed chemoselective hydrogenation of quinolines:Heterolytic cleavage of H_2 molecule

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Chinese Journal of Catalysis 2018年第11期39卷 1746-1752页

作者： Ye Lu Yoshinori Yamamoto Abdulrahman i.Almansour Natarajan Arumugam Raju Suresh Kumar Ming Bao State Key Laboratory of Fine Chemicals Dalian University of TechnologyDalian 116023LiaoningChina Department of Chemistry Graduate School of ScienceTohoku UniversitySendai 980‐8578Japan research Organization of Science and Technology Ritsumeikan UniversityKusatsuShiga 525‐8577Japan Department of Chemistry College of SciencesKing Saud UniversityP.O.Box 2455Riyadh 11451Saudi Arabia

An efficient and highly chemoselective heterogeneous catalyst system for quinoline hydrogenation was developed using unsupported nanoporous palladium(PdNPore).The PdNPore‐catalyzed chemoselective hydrogenation of quinoline proceeded smoothly under mild reaction conditions(low H2 pressure and temperature)to yield 1,2,3,4‐tetrahydroquinolines(py‐THQs)in satisfactory to excellent *** synthetically useful functional groups,such as halogen,hydroxyl,formyl,ethoxycarbonyl,and aminocarbonyl groups,remained intact during the quinoline *** palladium was leached from PdNPore during the hydrogenation ***,the catalyst was easily recovered and reused without any loss of catalytic *** results of kinetic,deuterium‐hydrogen exchange,and deuterium‐labeling experiments indicated that the present hydrogenation involves heterolytic H2 splitting on the surface of the catalyst.

关键词： Nanoporous materials Palladium Quinoline Chemoselective hydrogenation Heterogeneous catalyst

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Examination of Resource Curse Hypothesis: Mineral Resources Exploitation and Economic Growth in Xinjiang Autonomous Region

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Chinese Journal of Population,Resources and Environment 2011年第1期9卷 63-70页

作者： Zhang Xinhua Gu Shuzhong Wang Xingjie Wu Hong Zhou Hong Hu Yongjun institute of Geographic Sciences and Natural Resources research Chinese Academy of Sciences Beijing 100101 China institute of Resources and Environmental Polices Development Research Center of the State Council Beijing 100010 China graduate University of Chinese Academy of Sciences Beijing 100049 China Xinjiang Party school Urumqi 830002 China

The mineral resources exploitation stage and the economic growth rate are various in different regions of Xinjiang Autonomous region. Using the method of location quotient, this paper identifies and classifies the intensive regions of three types of mineral resources, known as coal, oil and natural gas, respectively. The intensive regions of economic growth were also identified, according to the rate of per capita GDP growth at prefecture, autonomous prefecture and city. The relationships between different mineral resources and economic growth are different, for example, the relationship between economic growth and coal resource is positive, while the relationship between economic growth and oil resource, or natural gas resource is negative. This study empirically examines the effects of natural resources on economic growth of Xinjiang. The results show that whilst natural resources have a positive impact on growth, and can make a negative impact on growth through the transmission channels, such as investment, manufacture, human capital, and scientific and technologic innovation. Moreover, it studies the transmission channels, that is, the effect of natural resources on the other explanatory variables, and calculates the indirect effect of natural resources on growth for each transmission channel, and comprehensive effects of natural resources on growth. The calculated result of comprehensive effects indicates that the positive direct effects of natural resources on growth are shown to outweigh the negative indirect effect of Xinjiang autonomous region.

关键词： mineral resources exploitation economics growth effects resource curse Xinjiang

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RadonPy:automated physical property calculation using all-atom classical molecular dynamics simulations for polymer informatics

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npj Computational Materials 2022年第1期8卷 2155-2169页

作者： Yoshihiro Hayashi Junichiro Shiomi Junko Morikawa Ryo Yoshida The institute of Statistical Mathematics(iSM) Research Organization of Information and Systems10-3 Midori-choTachikawaTokyo190-8562Japan Department of Mechanical Engineering The University of Tokyo7-3-1 HongoBunkyoTokyo113-8656Japan institute of Engineering innovation The University of Tokyo2-11 YayoiBunkyo-kuTokyo113-0032Japan Department of Materials Science and Engineering School of Materials and Chemical TechnologyTokyo Institute of Technology2-12-1 OokayamaMeguro-kuTokyo152-8552Japan research and Services Division of Materials Data and integrated System(MaDiS) National Institute for Materials Science(NIMS)1-2-1 SengenTsukubaIbaraki305-0047Japan Department of Statistical Science School of Multidisciplinary ScienceThe Graduate University of Advanced Studies(SOKENDAI)10-3 Midori-choTachikawaTokyo190-8562Japan

The spread of data-driven materials research has increased the need for systematically designed materials property ***,the development of polymer databases has lagged far behind other material *** present RadonPy,an open-source library that can automate the complete process of all-atom classical molecular dynamics(MD)simulations applicable to a wide variety of polymeric ***,15 different properties were calculated for more than 1000 amorphous *** MD-calculated properties were systematically compared with experimental data to validate the calculation conditions;the bias and variance in the MD-calculated properties were successfully calibrated by a machine learning *** the high-throughput data production,we identified eight amorphous polymers with extremely high thermal conductivity(>0.4 W∙m^(–1)∙K^(–1))and their underlying *** to the advancement of materials informatics since the advent of computational property databases for inorganic crystals,database construction using RadonPy will promote the development of polymer informatics.

关键词： property calculation dynamics

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