75 research outputs found
sj-docx-1-eae-10.1177_0958305X231204028 - Supplemental material for Syngas production from aqueous phase reforming of glycerol–water mixture for compression ignition engine
No full textSupplemental material, sj-docx-1-eae-10.1177_0958305X231204028 for Syngas production from aqueous phase reforming of glycerol–water mixture for compression ignition engine by Vetrivel Kumar Kandasamy, Arunkumar Munimathan, Silambarasan Rajendran and Ratchagaraja Dhairiyasamy in Energy & Environment</p
Intelligent Network Intrusion Prevention Feature Collection and Classification Algorithms
No full textRapid Internet use growth and applications of diverse military have managed researchers to develop smart systems to help applications and users achieve the facilities through the provision of required service quality in networks. Any smart technologies offer protection in interactions in dispersed locations such as, e-commerce, mobile networking, telecommunications and management of network. Furthermore, this article proposed on intelligent feature selection methods and intrusion detection (ISTID) organization in webs based on neuron-genetic algorithms, intelligent software agents, genetic algorithms, particulate swarm intelligence and neural networks, rough-set. These techniques were useful to identify and prevent network intrusion to provide Internet safety and improve service value and accuracy, performance and efficiency. Furthermore, new algorithms of intelligent rules-based attributes collection algorithm for efficient function and rules-based improved vector support computer, were proposed in this article, along with a survey into the current smart techniques for intrusion detection systems
Deep Belief Network enhanced Intrusion Detection System to Prevent Security Breach in the Internet of Things
No full textDigital Payment Temporary Sub-accounts with Spending Limits
No full textIn online payment systems that link a bank account of a user to a payment identifier such as a mobile number, the bank account can be used only by the user associated with the payment identifier. Since linking multiple payment identifiers to the same bank account is not supported, it is necessary that a separate account and payment identifier be set up for each person of a group such as a family, or to use cash or other payment mechanisms which are less convenient. This disclosure describes techniques that enable a primary user of a bank account linked to a payment identifier to selectively provide other users shared access to a portion of funds within the bank account. The funds can be accessed via an online payment system using a specialized payment code, e.g., a quick response (QR) code. The QR code encodes payment identifier information of the primary account holder and a spending limit. The QR code can be shared with a family member or any other trusted person. Payment requests can be initiated by scanning the QR code. The payment requests are authenticated using a hashed pincode associated with the QR code and once verified, are routed to the payment identifier of the primary user. If the amount is below the limit, payment is approved via the online payment system
Offline Payments Using Printed QR Codes
No full textMobile payment applications cannot be used to make payments if a person does not have a mobile device or if no data connectivity is available. This disclosure describes techniques to enable a user to make a payment even if the user does not have a mobile device or if their device does not have data connectivity. Per the techniques, a user can carry a printed QR code that includes information about the user’s payment account, e.g., a payment wallet, a bank account, etc. that serves as the source of payment. The code can be scanned by a merchant (or other user) that is to receive payment from the user using a merchant device. After the merchant scans the code using their device, the user can enter credentials on the merchant device to authenticate and approve the transfer
Photocatalytic, antibacterial and anticancer activity of silver-doped zinc oxide nanoparticles
No full textSilver-doped zinc oxide nanoparticles (Ag-ZnO NPs) were successfully synthesized by the Sol-gel method coated with polyethylene glycol as a stabilizing and capping agent. The UV–Vis spectrophotometer analysis was done to analyze the optical property of the nanoparticles. XRD pattern showed the hexagonal structure of ZnO nanoparticles and the reduction in the intensity of the peaks of Ag-ZnO NPs indicates the incorporation of Ag+ ions in the ZnO lattices. The surface structural properties of the NPs were confirmed by Field Emission Scanning Electron Microscope (FE-SEM), High Resolution Transmission Electron Microscopy (HRTEM) and Selected Area Electron Diffraction (SAED). The elemental composition of nanoparticles was confirmed by EDAX and XRF-Spectroscopy. The functional group of ZnO and Ag nanoparticles were determined by FT-IR spectroscopy. The photocatalytic activity of Ag-ZnO NPs was studied against ponceau and the maximum degradation percentage was observed to be 89% at 140 min. Further, Ag-ZnO NPs unveiled high potent antibacterial activity against the selected bacterial pathogens and it also rendered significant anticancer activity in UVB-induced HaCaT cells. Consequently, the fluorescent microscopic analysis confirmed the increasing Reactive Oxygen Species (ROS) generation and Mitochondrial Membrane Potential (MMP) loss in the HaCaT cells that leads to the apoptosis induction. Hence, the selected combination of nanoparticles has proven to exhibit higher photocatalytic, antibacterial and anticancer activity. In the near future, it could be an efficient tool for eradicating the dye pollution from wastewater and also preferably be utilized in the cosmetics and pharmaceutical industries to prevent skin cancer
Impact of reactor environment on quenching heat transfer of accident tolerant fuel cladding
No full textThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.Thesis: S.M., Massachusetts Institute of Technology, Department of Nuclear Science and Engineering, 2018Cataloged from student-submitted PDF version of thesis. Page 123 blank.Includes bibliographical references (pages 106-116).Development of accident tolerant fuels (ATF) for light water reactors (LWRs) came into focus for the nuclear engineering community after the accidents at Fukushima-Daiichi. The primary focus of the ATF program is to identify alternative fuel and cladding technologies that may provide enhanced safety, competitiveness, and economics. The new fuel design must also be compatible with present-day LWR design. For near-term applications, coatings on the nominal Zirconium-based cladding material and other metallic materials are being considered to improve the corrosion resistance and reduce the generation of hydrogen at high temperatures. Major ATF coating choices under consideration include chromium as a coating, iron-chromium-aluminum alloys (FeCrAl) as cladding and molybdenum as a coating, which have demonstrated better mechanical and oxidation behavior during the experimental testing.Thermal-fluids characteristics are pivotal for a robust testing of ATF concepts as the proposed candidates may have an entirely different thermal-hydraulic behavior when compared to Zircaloy-4. ATF coatings may display very different boiling characteristics as a result of different microstructures and surface characteristics. In the present work, transient boiling heat transfer during quenching of the candidate ATF claddings on vertical rodlets is studied experimentally. The candidate ATF material (chromium, FeCrAl, and molybdenum) are applied on Zircaloy-4 rodlets. The vertical solid rodlets are heated to temperatures up to 1000 °C and are quenched in a saturated pool of water at atmospheric pressure. The temperature variation during the quenching of rodlets was recorded insitu with synchronized visualization of boiling regimes over the test specimen using a high-speed video camera.The quench performance of the ATF coatings was analyzed based on the examination of various surface parameters such as wettability, roughness, emissivity and capillary wicking. In order to obtain a more realistic picture of the candidate performance during the emergency cooling reflood phase in a nuclear reactor, the coated rodlets are also oxidized in an autoclave before quenching. The performance of the candidate claddings is evaluated after oxidation and the surface characterized. It was observed from the post-test analysis that the surface characteristics and oxidation had a significant impact on the quench performance of ATF coatings, which varied between different coating materials. In order to better understand the thermal margins in a reactor specific environment, an analysis was performed on samples after exposing them to gamma rays. The gamma rays tend to change the surface wettability through a phenomenon called Radiation Induced Surface Activation.A Gammacell 220E irradiator that uses 12 cobalt-60 pencil sources, arranged axially in a sample chamber at MIT, was used to irradiated the samples. The results of water quenching and contact angle studies showed a higher Leidenfrost temperature and wettability in both samples exposed to gamma irradiation. The detailed microscopic analysis attributed the enhanced wettability to oxidation of the surface under gamma irradiation.by Arunkumar Seshadri.S.M.S.M. Massachusetts Institute of Technology, Department of Nuclear Science and Engineerin
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