151 research outputs found
The world of betel nuts.
No full text<p>(A) The carved hilt of a Dayak head hunter sword. The chewing of areca nut is an important an essential element of the culture of these tribes on the Island of Borneo, and has been throughout their known history. It was reflection on this abstract, almost psychedelic, carving that inspired the senior author (RLP) to investigate the activity of areca nuts and arecoline. (B) An areca nut and traditional nut cutter, an essential piece of the paraphernalia associated with this drug habit. (C) A wall in Barabanki, Uttar Pradesh, India stained by the expectorate of a betel chewer. Photo by permission Ashok Kumar.</p
A Test Suite for Quantum Network Applications: Evaluation of the Distributed CNOT Application in its Ability to Benchmark Quantum Networks
No full textBenchmarks for quantum network systems currently are an underrepresented subject in the research field. This paper evaluates how informative a distributed CNOT gate application is, in recognizing errors in the total quantum system. The goal is to decide whether it should be included as a benchmark in a newly developed benchmark suite for quantum network systems. The application is simulated and its error rate on certain inputs is plotted against properties of the quantum network system. This way it is evaluated that the application is sensitive to certain parameters of the quantum link and quantum devices in the nodes. Additionally, a quantitative analysis on the results shows which inputs are most effective in reacting to errors in the total quantum system. That way it is possible to conclude that inputs in the x-basis are sensitive to the most parameters and that combining these results with the inputs |10⟩ or |11⟩ yields an optimal result. It can be included in a benchmark suite if it is sensitive to parameters to which non of the other applications in the suite are sensitive.CSE3000 Research ProjectComputer Science and Engineerin
Neuroinflammation and Cognition
No full textThis eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contac
Analytical and numerical approach on convective flow in partially heated channel filled by porous media
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Development of Co/Co9S8 metallic nanowire anchored on N-doped CNTs through the pyrolysis of melamine for overall water splitting
Get PDFHerein, we report the successful synthesis of Co9S8 metal-sulfide nanowire trapped in multi walled carbon nanotube (MWCNT), which was subsequently found to be an effective catalyst for water splitting. Melamine pyrolysis together with a Co precursor results in MWCNTs, with the addition of sulfur during synthesis enhancing the surface area, pore size, and oxygen vacancy defects in the nanotubes. The hierarchical structure of Co/Co9S8/CNT products boosted the electron mobility and mass transport for both the oxygen evolution (OER) and hydrogen evolution reaction (HER) in alkaline medium. Doping the catalyst surface with Pyridinic-N atoms, Graphitic-N atoms and thioamide S-atoms dramatically improved the bifunctional electrocatalytic performance by lowering the overpotentials for OER and HER reactions. The Co/Co9S8/CNT generated a current density of 10 mAcm?2 water-splitting current by applying a cell voltage of only 1.5 V. Further, Co/Co9S8/CNT showed excellent stability. The mechanism of Co8S9 nanowire formation in the MWCNT was also investigated.This publication was made possible by NPRP Grant (NPRP8-145-2-066) from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of the author(s). The authors also wish to gratefully acknowledge Centre of Advanced Materials (CAM) and Gas Processing Center (GPC) at Qatar University for XRD and XPS analysis respectively. The SEM analysis was accomplished in the Central Laboratories Unit, Qatar University. The authors would also like to acknowledge QEERI Core Labs for their support related to the TEM characterization. Open Access funding provided by the Qatar National Library. The raw data required to reproduce these findings cannot be shared at this time as the data also forms part of an ongoing study. The processed data required to reproduce these findings cannot be shared at this time as the data also forms part of an ongoing study. Anchu Ashok: Conceptualization, Methodology, Data curation, Formal analysis, Investigation, Validation, Writing - Original draft, Anand Kumar: Conceptualization, Supervision, Writing - Review & Editing, Project administration, Funding acquisition, Janarthanan Ponraj: Visualization, Investigation, Said A. Mansour: Visualization, InvestigationScopu
Laying the foundation for building a Quantum Networking Benchmark suite using Quantum Network Applications: Evaluating the inclusion of the Clauser-Horne-Shimony-Holt game quantum network application
No full textThe rapid advancement of Quantum Network architectures necessitates a comprehensive and quantitative comparison to assess their effectiveness and performance. Unfortunately, there does not exist an implemented quantum network benchmark suite capable of determining the superior architecture. Hence, our study aims to establish the foundation for developing a benchmark suite by leveraging existing quantum network applications. However, the specific inclusion of quantum network applications in the suite remains to be determined. Therefore, to address this gap, our study will explore the potential inclusion of the Clauser-Horne-Shimony-Holt (CHSH) game based on its effectiveness in identifying errors within various properties of the quantum networking system. We use an exploratory research methodology involving experiments performed on simulated quantum networks utilizing SquidASM. Each experiment simulates multiple quantum networks, with a single property as the independent variable. For each value of the independent variable, we calculate both the success probability of the game and the number of successes per second. Subsequently, we employ the one-way ANOVA test to examine if there are significant variations in these performance metrics. Our results demonstrate that the CHSH game exhibits sensitivity to all properties affecting the quality of entanglement between nodes, execution time, and the error probability of both single-qubit gates and measure operations. Additionally, we compare the success probabilities based on different input combinations using the Root Mean Squared metric to uncover any underlying patterns within the data. As a result, we discovered a procedure for quantifying the difference between the error probabilities of measurements of zero and one. Based on the outcomes of our study, we consider the CHSH game to be a suitable addition to the benchmark suite if the testing requirements of the suite align with the qualities offered by the application. We anticipate that these results will aid the development of the benchmark suite and advance the understanding of quantum network architectures and their evaluationhttps://gitlab.com/tmaliappis28/research-project Repository link Public repository containing all code used in the project ShowEdit https://surfdrive.surf.nl/files/index.php/s/w7qq3pQXYgUkr8T?path=%2FResults%2FCHSH%20game%20-%20Thomas%20Maliappis Surfdrive that contains also all code used in the projectCSE3000 Research ProjectComputer Science and Engineerin
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