检索结果-南通市图书馆

Effects of low-temperature oxidation on natural remanent magnetization of Chinese loess

在线全文

学校读者我要写书评

暂无评论

Effects of low-temperature oxidation on natural remanent mag...

中国科学院地质与地球物理研究所2002学术年会

作者： s.k.banerjee M.J.Jackson Institute for Rock Magnetism Department of Geology and GeophysicsUniversity of Minnesota

This study systematically investigates changes in both compositions and grain-sizes of magnetic minerals in the Chinese loess/paleosol samples(Yichuan,China) during thermal demagnetization *** 100 and 200°,(1) Hc and Hcr significantly decrease while Mrs and Ms remain stable;(2) concentration of the multi-domain(MD) grains increases while that of superparamagnetic(sP) grains decreases;and(3) there exists the abnormal behavior of the thermal demagnetization in the natural remanent magnetization(NRM).In addition,the corresponding changes in all these parameters are gradually muted with the increase of the pedogenesis *** results indicate that the observed alteration probably relates to reducing processes caused by the burning of the organic matter in *** the thermal treatment,the MD grains in loess samples had been partially altered in nature by low-temperature oxidization(LTO).This CRM can be sufficiently attenuated or even removed by the reducing process between 100 and 200°during the thermal treatment and has no apparent harmful effects on the characteristic remanent magnetization (ChRM) between 300 and 500°.

关键词： chemical remanent magnetization low-temperature oxidation Verwey transition natural remanent magnetization Chinese loess

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

低温氧化作用对中国黄土记录剩磁的影响

科学通报 2003年第2期48卷 193-198页

作者：刘青松,s.k.banerjee,M.J.Jackson,朱日祥,潘永信 Institute for Rock Magnetism.Department of Geology University of Minnesota Institute for Rock Magnetism.Department of Geology University of Minnesota Institute for Rock Magnetism.Department of Geology University of Minnesota 中国科学院地质与地球物理研究所古地磁实验室中国科学院地质与地球物理研究所古地磁实验室 Minneapolis Minneapolis Minneapolis 北京100101 北京100101 11]MN UsA 13]MN UsA 9]MN UsA

系统地研究了黄土/古土壤样品在加热中磁性矿物及其粒径的变化.实验结果表明,在100～200℃之间,因样品中有机质燃烧而产生的还厚环境可以提高样品所含磁铁矿的纯度,并影响样品的岩石磁学性质,主要表现在:(1)样品的矫顽力(Hc)和剩磁矫顽... 详细信息

系统地研究了黄土/古土壤样品在加热中磁性矿物及其粒径的变化.实验结果表明,在100～200℃之间,因样品中有机质燃烧而产生的还厚环境可以提高样品所含磁铁矿的纯度,并影响样品的岩石磁学性质,主要表现在:(1)样品的矫顽力(Hc)和剩磁矫顽力(Hcr)显著减小:(2)多畴(MD)磁性矿物的含量增多,而超顺磁(sP)磁性矿物的含量降低;(3)天然剩磁热退磁有异常显示;(4)上述变化随成土作用增强而减弱.进一步的研究表明,这一还原过程可有效地消除黄土中MD磁铁矿由天然低温氧化怍用(LTO)而携带的次生化学剩磁.

关键词：化学剩磁低温氧化作用 Verwey转换天然剩磁中国黄土

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

传感器校准数据处理的新方法

国外导弹与航天运载器 1990年第12期 29-34页

作者： s.k.banerjee 骆玉玲

在这篇文章中,论证了寻求传感器系数计算的方法。对所有传感器校准来说,通常是推荐最小二乘方法来表征传感器特性的。已进行了一种推广,就是应用测量噪声作为传感器系数计算的输入参数之一来输入卡尔曼滤波器。这种方法有助于估算系数,... 详细信息

在这篇文章中,论证了寻求传感器系数计算的方法。对所有传感器校准来说,通常是推荐最小二乘方法来表征传感器特性的。已进行了一种推广,就是应用测量噪声作为传感器系数计算的输入参数之一来输入卡尔曼滤波器。这种方法有助于估算系数,不受测量噪声的影响。作为一个特例,已经研究了加速度计的校准数据。IEEED-sTD-530中拟出的方法可作为加速度计校准的参考。同一文件给出了输入轴不对准、偏置、标度因数以及来自精密分度头中加速度计多位置校准的二阶非线性的校准方法。上述文件附录中给出的最小二乘方法不包括作为输入之一的测量噪声(按照最小二乘方法)。为了避免以上不足之处,试行了卡尔曼滤波的应用。由传感器规格产生的角度所得到的结果是令人鼓舞的。设想了很多优点。来自各种校准数据计算系数的方差较小。并且可以估算出加速度计甚至有精密分度头校准的、足够精确的非线性值。

关键词：传感器数据处理卡尔曼滤波

Circum-Indian Holocene sea-level database:A repository of distinct relative sea-level plots across the Indian Peninsula

在线全文

学校读者我要写书评

暂无评论

Journal of Palaeogeography 2024年第1期13卷 1-17页

作者： shradha Menon Pankaj khanna santanu banerjee REEFs Lab Department of Earth SciencesIIT GandhinagarPalajGandhinagarGujarat382355India Department of Earth sciences IIT BombayPowaiMumbai400076India

The Indian Peninsula is one of the most well-studied regions for Holocene sea-level fluctuations in the world, however, standardized relative sea-level datasets are missing. This study provides an archive of sealevel indicators(n = 162, 20 locations) along the western and the eastern sides of the peninsula, that have been used to develop Relative sea Level(RsL) plots. Each dated sea-level indicator is recalibrated for its elevation based on tidal and tectonic correction, as well as age with reservoir correction, and have been separated into six zones based on coastal geomorphology and number of datasets. The database spans throughout the Holocene and covers sea-level depth/elevations from-45 m to +5 m from mean sea-level(MsL). Approximately 90 % of the dataset range from 8 ka to the present day. The first transgression is highly variable and identified between 8.5-8 ka BP in Gujarat(Zone 1), ~ 5.5 ka BP in Maharashtra(Zone 2), between 8 and 7 ka BP in Tamil Nadu(Zone 4) and between 8 and 7.5 ka BP in the Bengal coasts(Zone 6). No transgression above present sea-level is observed along Andhra Pradesh(Zone 5)(no data for kerala-Zone 3).Further, Zones 1, 2, 4 and 6 show a strong uplift component(tectonic), whereas Zone 5 exhibits subsidence during the Holocene(Zone 3-insufficient data). Based on these findings, and given the region's coastal topography and tidal components, Zones 6 and 1 will likely undergo the largest coastal inundation, followed by Zones 5, 4, 2, and 3. These insights are critical in planning future coastal inundation measures across the Indian Peninsula.

关键词： Indian ocean Terraces Relative sea level curve Holocene Arabian sea Bay of Bengal

Improved Dynamic Johnson sequencing Algorithm(DJs)in Cloud Computing Environment for Efficient Resource scheduling for Distributed Overloading

在线全文

学校读者我要写书评

暂无评论

Journal of systems science and systems Engineering 2024年第4期33卷 391-424页

作者： Anurag sinha Pallab banerjee sharmistha Roy Nitasha Rathore Narendra Pratap singh Mueen Uddin Maha Abdelhaq Raed Alsaqour Department of Computer science Engineering ICFAI Tech SchoolICFAI UniversityJharkhandRanchi834004India Department of Computer science Engineering Amity UniversityJharkhandRanchi835303India Department of Computing and Information Technology Usha Martin UniversityRanchi835103India Department of Information Technology Bharti Vidyapeeth’s College of EngineeringPaschim ViharNew DelhiIndia Department of CsE Delhi UniversityNew DelhiIndia College of Computing and Information Technology University of Doha for Science and TechnologyDoha24449Qatar Department of Information Technology College of Computer and Information SciencesPrincess Nourah Bint Abdurrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Information Technology College of Computing and InformaticsSaudi Electronic University93499RiyadhSaudi Arabia

This study introduces an innovative approach to optimize cloud computing job distribution using the Improved Dynamic Johnson sequencing Algorithm(DJs).Emphasizing on-demand resource sharing,typical to Cloud service Providers(CsPs),the research focuses on minimizing job completion delays through efficient task *** Johnson’s rule from operations research,the study addresses the challenge of resource availability post-task *** advocates for queuing models with multiple servers and finite capacity to improve job scheduling models,subsequently reducing wait times and queue *** Dynamic Johnson sequencing Algorithm and the M/M/c/k queuing model are applied to optimize task sequences,showcasing their efficacy through comparative *** research evaluates the impact of makespan calculation on data file transfer times and assesses vital performance indicators,ultimately positioning the proposed technique as superior to existing approaches,offering a robust framework for enhanced task scheduling and resource allocation in cloud computing.

关键词： First come first served(FCFs)scheduling round robin task scheduling queuing model Johnson scheduling algorithm

Intrusion Detection system Using Classification Algorithms with Feature selection Mechanism over Real-Time Data Traffic

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China Communications 2024年第9期21卷 292-320页

作者： Gulab sah sweety singh subhasish banerjee Computer science and Engineering National Institute of Technology Arunachal PradeshIndia

The key objective of intrusion detection systems(IDs)is to protect the particular host or network by investigating and predicting the network traffic as an attack or *** IDs uses many methods of machine learning(ML)to learn from pastexperience attack *** based and identify the new *** though these methods are effective,but they have to suffer from large computational costs due to considering all the traffic features,***,emerging technologies like the Internet of Things(Io T),big data,*** getting advanced day by day;as a result,network traffics are also increasing ***,the issue of computational cost needs to be addressed ***,in this research,firstly,the ML methods have been used with the feature selection technique(FsT)to reduce the number of features by picking out only the important ones from NsL-kDD,CICIDs2017,and CIC-DDo s2019datasets later that helped to build IDss with lower cost but with the higher performance which would be appropriate for vast scale *** experimental result demonstrated that the proposed model *** tree(DT)with Recursive feature elimination(RFE)performs better than other classifiers with RFE in terms of accuracy,specificity,precision,sensitivity,F1-score,and G-means on the investigated datasets.

关键词： CICIDs2017 dataset classifiers IDs ML NsL kDD dataset RFE

Cellular interplay to 3D in vitro microphysiological disease model:cell patterning microbiota-gut-brain axis

在线全文

学校读者我要写书评

暂无评论

Bio-Design and Manufacturing 2024年第3期7卷 320-357页

作者： kamare Alam Lakshmi Nair souvik Mukherjee kulwinder kaur Manjari singh santanu kaity Velayutham Ravichandiran sugato banerjee subhadeep Roy Department of Pharmacology and Toxicology National Institute of Pharmaceutical Education and ResearchKolkataWest Bengal 700054India Department of Pharmaceutical sciences Assam UniversitySilchar 788011India Department of Pharmaceutical sciences Guru Ghasidas UniversityKoniBilaspur 495009C.G.India school of Pharmacy and Biomolecular sciences RCSI University of Medicine and Health SciencesDublin D02 YN77Ireland Tissue Engineering Research Group Department of Anatomy and Regenerative MedicineRCSI University of Medicine and Health SciencesDublin D02 YN77Ireland Department of Pharmaceutics National Institute of Pharmaceutical Education and ResearchKolkataWest Bengal 700054India Department of Natural Products National Institute of Pharmaceutical Education and ResearchKolkataWest Bengal 700054India

The microbiota-gut-brain axis(MGBA)has emerged as a key prospect in the bidirectional communication between two major organ systems:the brain and the *** between the two organ systems allows the body to function without disease,whereas dysbiosis has long-standing evidence of etiopathological *** most common communication paths are the microbial release of metabolites,soluble neurotransmitters,and immune ***,each pathway is intertwined with a complex *** the emergence of in vitro models and the popularity of three-dimensional(3D)cultures and Transwells,engineering has become easier for the scientific understanding of neurodegenerative *** paper briefly retraces the possible communication pathways between the gut microbiome and the *** further elaborates on three major diseases:autism spectrum disorder,Parkinson’s disease,and Alzheimer’s disease,which are prevalent in children and the *** diseases also decrease patients’quality of ***,understanding them more deeply with respect to current advances in in vitro modeling is crucial for understanding the *** of MGBA in the laboratory uses many molecular technologies and biomaterial *** and organoids provide a more realistic picture of the cell and tissue structure than *** them with the Transwell system offers the advantage of compartmentalizing the two systems(apical and basal)while allowing physical and chemical cues between ***-edge technologies,such as bioprinting and microfluidic chips,might be the future of in vitro modeling,as they provide dynamicity.

关键词： Microbiota-gut-brain axis Neurodegeneration 3D disease model Organoid Transwell system

Data-driven analysis of chemicals,proteins and pathways associated with peanut allergy:from molecular networking to biological interpretation

在线全文

学校读者我要写书评

暂无评论

Food science and Human Wellness 2024年第3期13卷 1322-1335页

作者： Emmanuel kemmler Julian Braun Florent Fauchère sabine Dölle-Bierke kirsten Beyer Robert Preissner Margitta Worm Priyanka banerjee Institute for Physiology Charité-University Medicine BerlinBerlin 10115Germany Member of the kFO339 FOOD@Berlin 10115Germany si-M/“Der simulierte Mensch”a science framework of Technische Universität Berlin and Charité-Universitätsmedizin Berlin Berlin 10115Germany Charité-Universitätsmedizin Berlin corporate member of Freie Universität BerlinHumboldt-Universität zu Berlinand Berlin Institute of HealthBerlin 10115Germany Division of Allergy and Immunology Department of DermatologyVenerology and AllergyCharité-Universitätsmedizin Berlincorporate member of Freie Universität Berlin and Humboldt-Universität zu BerlinBerlin 10115Germany Pediatrics Campus VirchowCharité-University Medicine BerlinBerlin 10115Germany

Peanut allergy is majorly related to severe food induced allergic *** food including cow's milk,hen's eggs,soy,wheat,peanuts,tree nuts(walnuts,hazelnuts,almonds,cashews,pecans and pistachios),fish and shellfish are responsible for more than 90%of food ***,we provide promising insights using a large-scale data-driven analysis,comparing the mechanistic feature and biological relevance of different ingredients presents in peanuts,tree nuts(walnuts,almonds,cashews,pecans and pistachios)and ***,we have analysed the chemical compositions of peanuts in different processed form raw,boiled and *** the data-driven approach we are able to generate new hypotheses to explain why nuclear receptors like the peroxisome proliferator-activated receptors(PPARs)and its isoform and their interaction with dietary lipids may have significant effect on allergic *** results obtained from this study will direct future experimeantal and clinical studies to understand the role of dietary lipids and PPARisoforms to exert pro-inflammatory or anti-inflammatory functions on cells of the innate immunity and influence antigen presentation to the cells of the adaptive immunity.

关键词： Allergy informatics knowledge-graph Data analysis Food allergy Peroxisome proliferator-activated receptors Fatty acids

Neuroprotective effects of G9a inhibition through modulation of peroxisome-proliferator activator receptor gamma-dependent pathways by miR-128

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2024年第11期19卷 2532-2542页

作者： Aina Bellver-sanchis Pedro AAvila-López Iva Tic David Valle-García Marta Ribalta-Vilella Luis Labrador Deb Ranjan banerjee Ana Guerrero Gemma Casadesus Coralie Poulard Mercè Pallàs Christian Grinán-Ferré Department of Pharmacology and Therapeutic Chemistry Institut de Neurociències-Universitat de BarcelonaBarcelonaSpain Department of Biochemistry and Molecular Genetics Feinberg School of MedicineNorthwestern UniversityChicagoILUSA Institute of Biotechnology National Autonomous University of MexicoCuernavacaMexico Department of Pharmacology and Therapeutics Health Science Center-University of FloridaGainesvilleFLUSA Department of Chemistry National Institute of Technology DurgapurM G AvenueDurgapurWest BengalIndia Cancer Research Cancer Lyon Universitéde LyonLyonFrance Inserm U1052 Centre de Recherche en Cancérologie de LyonLyonFrance CNRs UMR5286 Centre de Recherche en Cancérlogie de LyonLyonFrance Centro de Investigación en Red Enfermedades Neurodegenerativas(CIBERNED)Instituto de Salud Carlos IIIMadridSpain Neuroimmunology Department National Institute of Neurology and Neurosurgery“Manuel Velasco Suárez”Mexico CityMexico

Dysregulation of G9a,a histone-lysine N-methyltransferase,has been observed in Alzheimer’s disease and has been correlated with increased levels of chronic inflammation and oxidative ***,microRNAs are involved in many biological processes and diseases playing a key role in pathogenesis,especially in multifactorial diseases such as Alzheimer’s ***,our aim has been to provide partial insights into the interconnection between G9a,microRNAs,oxidative stress,and *** better understand the biology of G9a,we compared the global microRNA expression between senescence-accelerated mouse-prone 8(sAMP8)control mice and sAMP8 treated with G9a inhibitor *** found a downregulation of miR-128 after a G9a inhibition treatment,which interestingly binds to the 3′untranslated region(3′-UTR)of peroxisome-proliferator activator receptor γ(PPARG)***,Pparg gene expression levels were higher in the sAMP8 group treated with G9a inhibitor than in the sAMP8 control *** also observed modulation of oxidative stress responses might be mainly driven Pparg after G9a *** confirm these antioxidant effects,we treated primary neuron cell cultures with hydrogen peroxide as an oxidative *** this setting,treatment with G9a inhibitor increases both cell survival and antioxidant ***,up-regulation of PPARγby G9a inhibitor could also increase the expression of genes involved in DNA damage responses and *** addition,we also described that the PPARγ/AMPk axis partially explains the regulation of autophagy markers ***,PPARγ/GADD45αpotentially contributes to enhancing synaptic plasticity and neurogenesis after G9a ***,we propose that pharmacological inhibition of G9a leads to a neuroprotective effect that could be due,at least in part,by the modulation of PPARγ-dependent pathways by miR-128.

关键词： aging cognitive decline epigenetics G9a inhibition microRNAs miR-128 peroxisome-proliferator activator receptorγ(PPARγ) PPARG sAMP8