检索结果-南通市图书馆

Facile in situ synthesis and characterization of Fe@Si/zeolite Na composites with magnetic core–shell structures from natural materials for enhanced curcumin loading capacity

引用

Nanotechnology and Precision Engineering 2024年第2期7卷 69-86页

作者： Munasir Nasir Nuhaa Faaizatunnisa Muhammad Naufal Ariesta Lydia Rohmawati rifqi a.lia.nura.iza. Department of Physics Faculty of Mathematics and Natural ScienceUniversitas Negeri Surabaya(Unesa)Surabaya60231Indonesia Department of Chemistry Faculty of Science and Data AnalyticsInstitut Teknologi Sepuluh Nopember(ITS)Surabaya 60111Indonesia Department of Chemistry Faculty of Mathematics and Natural SciencesUniversitas Sebelas Maret(UNS)Surakarta57126Indonesia Department of Medicine Faculty of Medical and Health ScienceUniversitas Islam Negeri(UIN)Maulana Malik IbrahimMalang65151Indonesia

Curcumin is a natural polyphenol that is used in various traditional ***,its inherent properties,such as its rapid degradation and metabolism,low bioavailability,and short half-life,are serious problems that must be *** this end,a drug carrier incorporating natural magnetic cores in a zeolite framework was developed and applied to the loading of curcumin in ethanol *** this system,curcumin is encapsulated in a zeolite Na(ZNA)magnetic core–shell structure(Fe@Si/ZNA),which can be easily synthesized using an in situ *** of Fe_(3)O_(4) nanoparticles was carried out from natural materials using a co-precipitation *** of the prepared magnetic core–shell structures and composites was carried out using vibrating-sample magnetometery,Fourier transform infrared spectroscopy,transmission electron microscopy,and x-ray *** cumulative loading of curcumin in the ZNA composite with 9%nanoparticles was found to reach 90.70%with a relatively long half-life of 32.49 *** tests of curcumin loading in the composite showed that adding magnetic particles to the zeolite framework also increased the stability of the composite *** kinetics and isotherm studies also found that the system follows the pseudo-second-order and Langmuir isotherm models.

关键词： Zeolite Na Magnetic core–shell nanoparticles(MNPs) ZNA Adsorption Curcumin

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Experimental study on the optimum design of diffuser-augmented horizontal-axis tidal turbine

引用

Clean Energy 2022年第5期6卷 776-786页

作者： Evi Elisa Ambarita Harinaldi rifqi Azhari Ridho Irwansyah Department of Mechanical Engineering Universitas IndonesiaKampus UI Depok 16424Indonesia

Ocean current energy is a promising and reliable resource that offers sustainability and predictability in realizing green future needs.A diffuser-augmented horizontal-axis turbine is utilized to generate ocean current energy.A numerical study on the impact of diffuser angle variations on the power coefficient has been carried out in the previous *** elucidate the fluid dynamics aspects and further validation of previous computational results,the experimental investigation on the optimal design of tidal turbine with 20.04°diffuser augmentation is presented in this *** study was conducted in a flowing tank with a current velocity of 0.7 m/*** maximum power coefficient of 20.04°is 0.436 experimentally,which is a little smaller than the numerical ***,to reinforce the 20.04°result,a diffuser with an angle of 10.43°was also manufactured and tested *** maximum power coefficient of 10.43°is 0.303 experimentally,which is 3%smaller than the numerical *** was concluded that the numerical approach might be considered satisfactory and represent similar phenomena to the experimental investigation in an application for modelling of multi-objective optimization.

关键词： ocean current energy tidal turbine diffuser augmentation power coefficient experimental study

来源：

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

Two-Dimensional Projection-Based Wireless Intrusion Classification Using Lightweight EfficientNet

引用

Computers, Materials & Continua 2022年第9期72卷 5301-5314页

作者： Muhamad Erza Aminanto Ibnu rifqi Purbomukti Harry Chandra Kwangjo Kim School of Strategic and Global Studies Universitas IndonesiaDepok16424Indonesia National Institute of Information and Communications Technology(NICT) Koganei184-8795Japan Department of Electrical Engineering and Information Technology Universitas Gadjah MadaYogyakarta55281Indonesia School of Computing Korea Advanced Institute of Science and Technology(KAIST)Daejeon34141Korea

Internet of Things(IoT)networks leverage wireless communication protocols,which adversaries can *** attacks,injection attacks,and flooding are several examples of different attacks existing in Wi-Fi *** Detection System(IDS)became one solution to distinguish those attacks from benign *** learning techniques have been intensively utilized to classify the ***,the main issue of utilizing deep learning models is projecting the data,notably tabular data,into an *** study proposes a novel projection from wireless network attacks data into a grid-based image for feeding one of the Convolutional Neural Network(CNN)models,*** define the particular sequence of placing the attribute values in a grid that would be captured as an *** the most important subset of attributes and EfficientNet,we aim for an accurate and lightweight IDS module deployed in IoT *** examine the proposed model using the Wi-Fi attacks dataset,called the AWID2 *** achieve the best performance by a 99.91%F1 score and 0.11%false-positive *** addition,our proposed model achieved comparable results with other statistical machine learning models,which shows that our proposed model successfully exploited the spatial information of tabular data to maintain detection accuracy.

关键词： Intrusion detection impersonation attack convolutional neural network anomaly detection

来源：

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

Ethnobotany of food,medicinal,construction and household utilities producing plants in Cikaniki,Gunung Halimun Salak National Park,Indonesia

引用

Journal of Mountain Science 2023年第1期20卷 163-181页

作者： Asih Perwita DEWI Peniwidiyanti PENIWIDIYANTI Muhammad rifqi HARIRI Prima Wahyu Kusuma HUTABARAT Irfan MARTIANSYAH Intani Quarta LAILATY Ahmad MUNAWIR Misbah Satria GIRI Ervan AMBARITA Research Center for Biosystematics and Evolution National Research and Innovation Agency(BRIN)Jl.Raya Jakarta-Bogor Km.46CibinongWest Java16911Indonesia Research Center for Ecology and Ethnobiology National Research and Innovation Agency(BRIN)Jl.Raya Jakarta-Bogor Km.46CibinongWest Java16911Indonesia Research Center for Plant Conservation Botanic Gardensand ForestryNational Research and Innovation Agency(BRIN)Jl.Ir.H.Juanda No.18BogorWest Java16112Indonesia Directorate of Conservation Area Planning Jl.Juanda No.15BogorWest Java16112Indonesia Gunung Halimun Salak National Park Jl.Raya CipanasKabandunganSukabumiWest Java43368Indonesia Unit PLTP Gunung Salak.Pamijahan PT Indonesia Power Kamojang POMUBogorWest Java16810Indonesia Botani Tropika Indonesia Foundation(BOTANIKA) Jl.Seruni No.25Bogor.West Java16112Indonesia

The community living around the Cikaniki Area of Gunung Halimun Salak National Park(CAGHSNP)uses various plants to fulfill their *** habits are related to indigenous knowledge of using plants as food,medicine,construction,and household utilities,which dynamic societal changes have not *** study aimed to inventory and update potential plants used as food,medicine,construction,and household utilities by local communities in the Cikaniki area,and measure and analyze their cultural and ethnobotanical *** study objected to five hamlets in the Cikaniki at Malasari Village,Nanggung District,Bogor Regency,West Java,*** quantitative analysis was calculated based on the Informant Consensus Factor,Fidelity Level,and Use *** analyzed the qualitative data based on the data collection through observation,interviews,and documentation from informants and respondents in five *** study recorded 199 plant species from 75 families used by the community of *** most utilized species in Cikaniki were Staurogyne elongata,Caryota mitis,Blumea balsamifera,Castanopsis argentea,Pilea melastomoides,and Piper *** are 72 species of plants used as food,122species for medicinal purposes,and 50 species of plants used for construction and household *** potential plant species in the CA-GHSNP,their utilization categories,and recommendation for conservation strategy are discussed.

关键词： Cikaniki Fidelity level Informant consensus factor Plant conservation Traditional knowledge Use value

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

社交媒体在印度尼西亚总统竞选中的使用

社交媒体在印度尼西亚总统竞选中的使用

引用

作者： rifqi Hasibuan(李礼及) 江西师范大学

学位级别：硕士

本文是基于印尼在近期组织的总统选举中使用社交媒体作为竞选工具的背景下产生的。自2010年,特别是脸书和推特这样的社交媒体快速发展以来,这是印尼首次在总统竞选使用社交媒体。一方面,印尼的脸书和推特用户分别排在世界第五和第四位,...

本文是基于印尼在近期组织的总统选举中使用社交媒体作为竞选工具的背景下产生的。自2010年,特别是脸书和推特这样的社交媒体快速发展以来,这是印尼首次在总统竞选使用社交媒体。一方面,印尼的脸书和推特用户分别排在世界第五和第四位,这表明印尼是使用脸书和推特的大国。另一方面,印尼是继美国和印度之后世界第三大民主国家,因此印尼的政治活动也显得尤为重要。本文以获选的印尼总统佐科·维多多的竞选团队为研究对象,采用定性研究方法和描述分析法展开研究,意在指出竞选中候选者使用社交媒体的策略以及社交媒体对选民的影响。笔者整理的数据和观点来自专著、大众媒体、互联网、观察报告以及深度访谈,在此基础上形成了这篇兼具描述性和分析性的论文。文中的采访对象源自总统竞选团队的成员以及社交媒体用户。研究发现,总统竞选者非常注重对由专家、志愿者以及名人组成的社交媒体团队的管理。尽管此次竞选中社交媒体的运用带来了一些负面影响,但好处是它让2014印尼总统竞选成为世界上选民参与度最高的总统选举。不管怎样,这次选举表明,选举中运用社交媒体能够改变候选者与选民之间的沟通模式,即选民不再只是被动的投票者,他们可以更积极主动地参与到竞选中来。之所以会选择这个主题,一方面是因为本身这是一个有趣的研究课题,另一方面则是考虑到这样的选题与自己的生活更贴近,在印尼的生活经历有助于笔者更好地理解这一主题。希望此次研究能为传播学研究提供新的视角。

关键词：

来源：

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：