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Zhao J. A Real-Time Detection Algorithm of Flame Target Image. COMPUTATIONAL INTELLIGENCE AND NEUROSCIENCE 2022; 2022:5277805. [PMID: 38633203 PMCID: PMC11022509 DOI: 10.1155/2022/5277805] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 09/19/2022] [Accepted: 09/27/2022] [Indexed: 04/19/2024]
Abstract
In many research tasks, the speed and accuracy of flame detection using supply chain have always been a challenging task for many researchers, especially for flame detection of small objects in supply chain. In view of this, we propose a new real-time target detection algorithm. The first step is to enhance the flame recognition of small objects by strengthening the feature extraction ability of multi-scale fusion. The second step is to introduce the K-means clustering method into the prior bounding box of the algorithm to improve the accuracy of the algorithm. The third step is to use the flame characteristics in YOLO+ algorithm to reject the wrong detection results and increase the detection effect of the algorithm. Compared with the YOLO series algorithms, the accuracy of YOLO+ algorithm is 99.5%, the omission rate is 1.3%, and the detection speed is 72 frames/SEC. It has good performance and is suitable for flame detection tasks.
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Affiliation(s)
- Jing Zhao
- School of Computer Science and Engineering, Nanjing University of Science & Technology, Nanjing 210094, China
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Khomyakov A, Sukhanova E, Mozhevitina E, Zykova M, Barkanov A, Avetisov R, Yurkin A, Subbotin K, Lis O, Avetissov I. Effect of high purity molybdenum oxide( vi) on crystal growth and OLED technology. CrystEngComm 2021. [DOI: 10.1039/d1ce01322j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The strong influence of MoO3 chemical purity from 99.99 wt% to 99.999 wt% on lithium triborate (LBO) and NaLa(MoO4)2 crystal growth as well as on OLED technologies has been demonstrated.
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Affiliation(s)
- Andrew Khomyakov
- Department of Chemistry and Technology of Crystals, D. Mendeleev University of Chemical Technology of Russia, Miusskaya pl. 9, 125047, Moscow, Russia
| | - Ekaterina Sukhanova
- Department of Chemistry and Technology of Crystals, D. Mendeleev University of Chemical Technology of Russia, Miusskaya pl. 9, 125047, Moscow, Russia
| | - Elena Mozhevitina
- Department of Chemistry and Technology of Crystals, D. Mendeleev University of Chemical Technology of Russia, Miusskaya pl. 9, 125047, Moscow, Russia
| | - Marina Zykova
- Department of Chemistry and Technology of Crystals, D. Mendeleev University of Chemical Technology of Russia, Miusskaya pl. 9, 125047, Moscow, Russia
| | - Artem Barkanov
- Department of Chemistry and Technology of Crystals, D. Mendeleev University of Chemical Technology of Russia, Miusskaya pl. 9, 125047, Moscow, Russia
| | - Roman Avetisov
- Department of Chemistry and Technology of Crystals, D. Mendeleev University of Chemical Technology of Russia, Miusskaya pl. 9, 125047, Moscow, Russia
| | - Alexander Yurkin
- Crystal Syberia, Ltd., 630058, Novosibirsk, Russia
- V. S. Sobolev Institute of Geology and Mineralogy, SB RAS, 630090, Novosibirsk, Russia
| | - Kirill Subbotin
- Department of Chemistry and Technology of Crystals, D. Mendeleev University of Chemical Technology of Russia, Miusskaya pl. 9, 125047, Moscow, Russia
- Prokhorov Prokhorov General Physics Institute of Russian Academy of Sciences, Vavilova 38, Moscow, 119991, Russia
| | - Olga Lis
- Prokhorov Prokhorov General Physics Institute of Russian Academy of Sciences, Vavilova 38, Moscow, 119991, Russia
| | - Igor Avetissov
- Department of Chemistry and Technology of Crystals, D. Mendeleev University of Chemical Technology of Russia, Miusskaya pl. 9, 125047, Moscow, Russia
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Kwak D, Wang M, Koski KJ, Zhang L, Sokol H, Maric R, Lei Y. Molybdenum Trioxide (α-MoO 3) Nanoribbons for Ultrasensitive Ammonia (NH 3) Gas Detection: Integrated Experimental and Density Functional Theory Simulation Studies. ACS APPLIED MATERIALS & INTERFACES 2019; 11:10697-10706. [PMID: 30854851 DOI: 10.1021/acsami.8b20502] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
A highly-sensitive ammonia (NH3) gas sensor based on molybdenum trioxide nanoribbons was developed in this study. α-MoO3 nanoribbons (MoO3 NRs) were successfully synthesized via a hydrothermal method and systematically characterized using various advanced technologies. Following a simple drop-cast process, a high-performance chemiresistive NH3 sensor was fabricated through the deposition of a MoO3 NR sensing film onto Au interdigitated electrodes. At an optimal operation temperature of 450 °C, the MoO3 nanoribbon-based sensor exhibited an excellent sensitivity (0.72) at NH3 concentration as low as 50 ppb, a fast response time of 21 s, good stability and reproducibility, and impressive selectivity against the interfering gases such as H2, NO2, and O2. More importantly, the sensor represents a remarkable limit of detection of 280 ppt (calculated based on a signal-to-noise ratio of 3), which makes the as-prepared MoO3 NR sensor the most sensitive NH3 sensor in the literature. Moreover, density functional theory (DFT) simulations were employed to understand the adsorption energetics and electronic structures and thus shed light on the fundamentals of sensing performance. The enhanced sensitivity for NH3 is explicitly discussed and explained by the remarkable band structure modification because of the NH3 adsorption at the oxygen vacancy site on α-MoO3 nanoribbons. These results verify that hydrothermally grown MoO3 nanoribbons are a promising sensing material for enhanced NH3 gas monitoring.
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Affiliation(s)
- Dongwook Kwak
- Institute of Materials Science , University of Connecticut , 97 North Eagleville Road , Storrs , Connecticut 06269 , United States
- Center for Clean Energy Engineering , 44 Weaver Road , Storrs , Connecticut 06269 , United States
| | - Mengjing Wang
- Department of Chemistry , University of California , Davis , California 95616 , United States
| | - Kristie J Koski
- Department of Chemistry , University of California , Davis , California 95616 , United States
| | - Liang Zhang
- Department of Chemical and Biomolecular Engineering , University of Connecticut , 191 Auditorium Road , Storrs , Connecticut 06269 , United States
| | - Henry Sokol
- Department of Chemical and Biomolecular Engineering , University of Connecticut , 191 Auditorium Road , Storrs , Connecticut 06269 , United States
| | - Radenka Maric
- Center for Clean Energy Engineering , 44 Weaver Road , Storrs , Connecticut 06269 , United States
- Department of Chemical and Biomolecular Engineering , University of Connecticut , 191 Auditorium Road , Storrs , Connecticut 06269 , United States
| | - Yu Lei
- Department of Chemical and Biomolecular Engineering , University of Connecticut , 191 Auditorium Road , Storrs , Connecticut 06269 , United States
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Rathnasamy R, Thangamuthu R, Alagan V. Sheet-like orthorhombic MoO3 nanostructures prepared via hydrothermal approach for visible-light-driven photocatalytic application. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-3190-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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