135 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

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    Supplemental 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

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    Rapid 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

    Pressure fluctuations in centrifugal compressor diffusers

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    The unstable flow phenomenon like rotating stall and surge in centrifugal compressors occur at very low flow rates. These would cause unduly large vibrations in the turbo- machinery components and results in mechanical failure. It is important to detect this phenomenon and avoid it by means of early warning systems. An attempt has been made in this paper to study the pressure fluctuations using high frequency miniature transducers in vane and vaneless diffusers of a centrifugal compressor. The unstable nature of the flow is characterized. The observation from the measurements indicate the pressure fluctuations in the vane diffusers are getting amplified and carried to the exit of the diffuser whereas in the case of vaneless diffuser such a phenomena is not observed. The flow near the leading edge of diffuser plays an important role in diffuser performance. The unsteady pressure fluctuations in the diffuser are characterized in terms of instability parameter at various locations in the diffuser. The location where such an instability parameter is sensitive to the flow coefficient is identified as the diffuser throat. Through this instability parameter it is possible to provide early warning just before compressor goes into stall. (Author

    Digital Payment Temporary Sub-accounts with Spending Limits

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    In 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

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    Mobile 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

    Virtual environments and autism: a developmental psychopathological approach

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    Individuals with autism spectrum disorders supposedly have an affinity with ICT, making it an ideally suited media for this population. Virtual environments (VEs) – both two dimensional and immersive – represent a particular kind of ICT that might be of special benefit. Specifically, this paper discusses the importance of psychological theory for VE designed for this population. I describe the contribution that different theories of autism (e.g., theory of mind, executive function, weak central coherence theory) have made and can make, as well as the potential of other non-autism-specific theories (e.g., embodied cognition). These technologies not only illuminate our understanding of autism, but they can also be used to develop new technologies for people without autism. So, as well as being an area of specialism, I argue that VE research in autism has extended – and will go onto – the boundaries of human–computer interaction more generally. This is because autism provides a unique window into human social communication and learning. Further, this field offers a chance for better inclusivity for individuals with autism within a digital society

    Photocatalytic, antibacterial and anticancer activity of silver-doped zinc oxide nanoparticles

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    Silver-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
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