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30 results on '"Peng, Mi"'

2. Structure-dependence and metal-dependence on atomically dispersed Ir catalysts for efficient n-butane dehydrogenation

Author

Chen, Xiaowen, primary, Qin, Xuetao, additional, Jiao, Yueyue, additional, Peng, Mi, additional, Diao, Jiangyong, additional, Ren, Pengju, additional, Li, Chengyu, additional, Xiao, Dequan, additional, Wen, Xiaodong, additional, Jiang, Zheng, additional, Wang, Ning, additional, Cai, Xiangbin, additional, Liu, Hongyang, additional, and Ma, Ding, additional

Published
2023
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3. Fully-exposed Pt-Fe cluster for efficient preferential oxidation of CO towards hydrogen purification

Author

Jia, Zhimin, primary, Qin, Xuetao, additional, Chen, Yunlei, additional, Cai, Xiangbin, additional, Gao, Zirui, additional, Peng, Mi, additional, Huang, Fei, additional, Xiao, Dequan, additional, Wen, Xiaodong, additional, Wang, Ning, additional, Jiang, Zheng, additional, Zhou, Wu, additional, Liu, Hongyang, additional, and Ma, Ding, additional

Published
2022
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7. Study on fatigue strength of FSW joints of 5083 aluminum alloy with kissing bond defect

Author

Peng Mi and Ruijie Wang

Subjects
0209 industrial biotechnology, Materials science, Alloy, chemistry.chemical_element, 02 engineering and technology, Welding, engineering.material, law.invention, 020901 industrial engineering & automation, 0203 mechanical engineering, Aluminium, law, Friction stir welding, Composite material, Mechanical Engineering, Stress–strain curve, technology, industry, and agriculture, Fracture mechanics, respiratory system, Fatigue limit, 020303 mechanical engineering & transports, chemistry, Mechanics of Materials, Fracture (geology), engineering, human activities
Abstract

This work studied the effect of kissing bond defects on the fatigue strength of friction stir welded (FSW) specimens and assessed fatigue life prediction approaches for the fatigue strength evaluation of friction stir welded specimens. For specimens with inherent kissing bond defects prepared by friction stir welding process made of AA5083 aluminum alloy thin sheets, constant amplitude fatigue tests under different loading levels were carried out on MTS test frame. Profiles of kissing bond defects at weld toes as well as the fatigue fracture morphologies were observed with scanning electron microscopy. According to the experimental observations, finite element models based on both the virtual notch radius theory and the crack propagation conception were built, respectively, to calculate the stress and strain in the weld zone. Correspondingly, fatigue lives were predicted by these two methods and compared with experimental results.

Published
2020
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8. Growth of metallic iron particles during reductive roasting of boron-bearing magnetite concentrate

Author

Guanghui Li, Tao Jiang, Liang Binjun, Zhiwei Peng, Mingjun Rao, Jinxiang You, Xin Zhang, and Huan-peng Mi

Subjects
Accuracy and precision, Materials science, Bearing (mechanical), 0211 other engineering and technologies, Metals and Alloys, General Engineering, Pellets, Analytical chemistry, chemistry.chemical_element, 02 engineering and technology, 010502 geochemistry & geophysics, 01 natural sciences, law.invention, Core (optical fiber), Metal, chemistry.chemical_compound, chemistry, law, visual_art, visual_art.visual_art_medium, Boron, 021102 mining & metallurgy, 0105 earth and related environmental sciences, Roasting, Magnetite
Abstract

The growing characteristics of metallic iron particles during reductive roasting of boron-bearing magnetite concentrate under different conditions were investigated. The size of the metallic iron particles was quantitatively measured via optical image analysis with consideration of size calibration and weighted ratio of image numbers in the core, middle and periphery zones of cross-section of pellets. In order to guarantee the measurement accuracy 54 images were captured in total for each specimen, with a weighted ratio of 1:7:19 with respect to the core, middle and periphery section of the cross-section of pellets. Increasing reduction temperature and time is favorable to the growth of metallic iron particles. Based on the modification of particle size measurement, in terms of time (t) and temperature (T) a predicting model of metallic iron particle size (D), was established as: D=125-0.112t-0.2352T-5.355×10-4t2+2.032× 10-4tT +1.134×10-4T2.

Published
2020
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9. Fully-exposed Pt clusters stabilized on Sn-decorated nanodiamond/graphene hybrid support for efficient ethylbenzene direct dehydrogenation

Author

Wang, Linlin, Qin, Xuetao, Sun, Ting, Cai, Xiangbin, Peng, Mi, Jia, Zhimin, Chen, Xiaowen, Wang, Ning, Diao, Jiangyong, Liu, Hongyang, Ma, Ding, Wang, Linlin, Qin, Xuetao, Sun, Ting, Cai, Xiangbin, Peng, Mi, Jia, Zhimin, Chen, Xiaowen, Wang, Ning, Diao, Jiangyong, Liu, Hongyang, and Ma, Ding

Abstract

The pursuit of energy conservation and environmental protection has always been a hot topic in the catalytic fields, which is inseparable from the rational designing of efficient catalysts and an in-depth understanding of the catalytic reaction mechanism. In this work, fully-exposed Pt clusters were fabricated on the atomically dispersed Sn decorated nanodiamond/graphene (Sn-ND@G) hybrid support and employed for direct dehydrogenation (DDH) of ethylbenzene (EB) to styrene (ST). The detailed structural characterizations revealed the fully-exposed Pt clusters were stabilized on Sn-ND@G, assisted by the spatial separation of atomically dispersed Sn species. The as-prepared Pt/Sn-ND@G catalyst showed enhanced ST yield (136.2 molEB·molPt−1·h−1 EB conversion rate and 99.7% ST selectivity) and robust long-term stability at 500 °C for the EB DDH reaction, compared with the traditional ND@G supported Pt nanoparticle catalyst (Pt/ND@G). The ST prefers to desorb from the fully-exposed Pt clusters, resulting in the enhanced DDH catalytic performance of the Pt/Sn-ND@G catalyst. The present work paves a new way for designing highly dispersed and stable supported metal catalysts for DDH reactions. [Figure not available: see fulltext.] © 2022, Tsinghua University Press.

Published
2022

10. Fully exposed palladium cluster catalysts enable hydrogen production from nitrogen heterocycles

Author

Dong, Chunyang, primary, Gao, Zirui, additional, Li, Yinlong, additional, Peng, Mi, additional, Wang, Meng, additional, Xu, Yao, additional, Li, Chengyu, additional, Xu, Ming, additional, Deng, Yuchen, additional, Qin, Xuetao, additional, Huang, Fei, additional, Wei, Xuyan, additional, Wang, Yang-Gang, additional, Liu, Hongyang, additional, Zhou, Wu, additional, and Ma, Ding, additional

Published
2022
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12. Metal-organic frameworks nanoswitch: Toward photo-controllable endo/lysosomal rupture and release for enhanced cancer RNA interference

Author

Xiaoyuan Chen, Ye Tian, Gang Liu, Peng Mi, Shangui Tang, Wen Cai, Chengchao Chu, Yang Zhang, Gan Lin, JiaJing Zhou, Junqing Wang, and Long Zhang

Subjects
Small interfering RNA, Cancer therapy, 02 engineering and technology, Gene delivery, 010402 general chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Anticancer drug, Atomic and Molecular Physics, and Optics, 0104 chemical sciences, chemistry.chemical_compound, chemistry, RNA interference, Biophysics, General Materials Science, Metal-organic framework, Electrical and Electronic Engineering, 0210 nano-technology, DNA
Abstract

Endo/lysosomal escape and gene release are two critical bottlenecks in gene delivery. Herein, a novel photo-controllable metal-organic frameworks (MOFs) nanoswitch is rationally designed for enhancing small interfering RNA (siRNA) delivery. One single laser triggers the “off-to-on” switching of MOFs nanocomplexes, inducing significant siRNA release accompanied by rapid MOFs dissociation into protonatable 2-methylimidazalo and osmotic rupturing Zn2+ ions, which cooperatively contribute to remarkable endo/lysosomal rupture (∼ 90%). The simultaneous endo/lysosomal rupture and release enable a high spatio-temporal control on RNA interference for effective cancer therapy. Notably, the “off-to-on” switching also activates fluorescence recovery for real-time monitoring siRNA delivery. The nanoswitch could easily be extended to deliver other therapeutic agents (e.g., DNA, protein, anticancer drug) for overcoming endo/lysosomal entrapment.

Published
2020
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13. Tuning the selectivity of catalytic nitriles hydrogenation by structure regulation in atomically dispersed Pd catalysts

Author

Liu, Zhibo, primary, Huang, Fei, additional, Peng, Mi, additional, Chen, Yunlei, additional, Cai, Xiangbin, additional, Wang, Linlin, additional, Hu, Zenan, additional, Wen, Xiaodong, additional, Wang, Ning, additional, Xiao, Dequan, additional, Jiang, Hong, additional, Sun, Hongbin, additional, Liu, Hongyang, additional, and Ma, Ding, additional

Published
2021
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14. Author Correction: Regulating coordination number in atomically dispersed Pt species on defect-rich graphene for n-2 butane dehydrogenation reaction

Author

Chen, Xiaowen, primary, Peng, Mi, additional, Cai, Xiangbin, additional, Chen, Yunlei, additional, Jia, Zhimin, additional, Deng, Yuchen, additional, Mei, Bingbao, additional, Jiang, Zheng, additional, Xiao, Dequan, additional, Wen, Xiaodong, additional, Wang, Ning, additional, Liu, Hongyang, additional, and Ma, Ding, additional

Published
2021
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15. Regulating coordination number in atomically dispersed Pt species on defect-rich graphene for n-butane dehydrogenation reaction

Author

Chen, Xiaowen, primary, Peng, Mi, additional, Cai, Xiangbin, additional, Chen, Yunlei, additional, Jia, Zhimin, additional, Deng, Yuchen, additional, Mei, Bingbao, additional, Jiang, Zheng, additional, Xiao, Dequan, additional, Wen, Xiaodong, additional, Wang, Ning, additional, Liu, Hongyang, additional, and Ma, Ding, additional

Published
2021
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16. A stable low-temperature H2-production catalyst by crowding Pt on α-MoC

Author

Zhang, Xiao, primary, Zhang, Mengtao, additional, Deng, Yuchen, additional, Xu, Mingquan, additional, Artiglia, Luca, additional, Wen, Wen, additional, Gao, Rui, additional, Chen, Bingbing, additional, Yao, Siyu, additional, Zhang, Xiaochen, additional, Peng, Mi, additional, Yan, Jie, additional, Li, Aowen, additional, Jiang, Zheng, additional, Gao, Xingyu, additional, Cao, Sufeng, additional, Yang, Ce, additional, Kropf, A. Jeremy, additional, Shi, Jinan, additional, Xie, Jinglin, additional, Bi, Mingshu, additional, van Bokhoven, Jeroen A., additional, Li, Yong-Wang, additional, Wen, Xiaodong, additional, Flytzani-Stephanopoulos, Maria, additional, Shi, Chuan, additional, Zhou, Wu, additional, and Ma, Ding, additional

Published
2021
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19. Maximizing sinusoidal channels of HZSM-5 for high shape-selectivity to p-xylene

Author

Wang, Chuanfu, primary, Zhang, Lei, additional, Huang, Xin, additional, Zhu, Yufei, additional, Li, Gang, additional, Gu, Qinfen, additional, Chen, Jingyun, additional, Ma, Linge, additional, Li, Xiujie, additional, He, Qihua, additional, Xu, Junbo, additional, Sun, Qi, additional, Song, Chuqiao, additional, Peng, Mi, additional, Sun, Junliang, additional, and Ma, Ding, additional

Published
2019
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21. Kinetic modulation of graphene growth by fluorine through spatially confined decomposition of metal fluorides

Author

Liu, Can, primary, Xu, Xiaozhi, additional, Qiu, Lu, additional, Wu, Muhong, additional, Qiao, Ruixi, additional, Wang, Li, additional, Wang, Jinhuan, additional, Niu, Jingjing, additional, Liang, Jing, additional, Zhou, Xu, additional, Zhang, Zhihong, additional, Peng, Mi, additional, Gao, Peng, additional, Wang, Wenlong, additional, Bai, Xuedong, additional, Ma, Ding, additional, Jiang, Ying, additional, Wu, Xiaosong, additional, Yu, Dapeng, additional, Wang, Enge, additional, Xiong, Jie, additional, Ding, Feng, additional, and Liu, Kaihui, additional

Published
2019
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23. In vivo evaluation of neutron capture therapy effectivity using calcium phosphate-based nanoparticles as Gd-DTPA delivery agent

Author

Novriana Dewi, Yoshinori Sakurai, Takayuki Nakagawa, Nobuhiro Nishiyama, Hiroki Tanaka, Kazunori Kataoka, Takehisa Matsukawa, Hiroyuki Takahashi, Horacio Cabral, Koji Ono, Minoru Suzuki, Yasuyuki Morishita, Peng Mi, Hironobu Yanagie, Yuriko Sakurai, Masashi Yanagawa, Kazuhito Yokoyama, and Atsuko Shinohara

Subjects
Calcium Phosphates, Gadolinium DTPA, Cancer Research, MRI contrast agent, Gadolinium, Contrast Media, chemistry.chemical_element, 02 engineering and technology, Calcium, Injections, Mice, 03 medical and health sciences, 0302 clinical medicine, Japan, In vivo, Neutron flux, Animals, Humans, Tissue Distribution, Research reactor, Irradiation, Mice, Inbred BALB C, business.industry, Radiochemistry, Radiotherapy Dosage, Neoplasms, Experimental, Neutron Capture Therapy, General Medicine, 021001 nanoscience & nanotechnology, Magnetic Resonance Imaging, Neutron capture, Treatment Outcome, Oncology, chemistry, 030220 oncology & carcinogenesis, Colonic Neoplasms, Feasibility Studies, Nanoparticles, Female, 0210 nano-technology, Nuclear medicine, business
Abstract

A more immediate impact for therapeutic approaches of current clinical research efforts is of major interest, which might be obtained by developing a noninvasive radiation dose-escalation strategy, and neutron capture therapy represents one such novel approach. Furthermore, some recent researches on neutron capture therapy have focused on using gadolinium as an alternative or complementary for currently used boron, taking into account several advantages that gadolinium offers. Therefore, in this study, we carried out feasibility evaluation for both single and multiple injections of gadolinium-based MRI contrast agent incorporated in calcium phosphate nanoparticles as neutron capture therapy agent.In vivo evaluation was performed on colon carcinoma Col-26 tumor-bearing mice irradiated at nuclear reactor facility of Kyoto University Research Reactor Institute with average neutron fluence of 1.8 × 10(12) n/cm(2). Antitumor effectivity was evaluated based on tumor growth suppression assessed until 27 days after neutron irradiation, followed by histopathological analysis on tumor slice.The experimental results showed that the tumor growth of irradiated mice injected beforehand with Gd-DTPA-incorporating calcium phosphate-based nanoparticles was suppressed up to four times higher compared to the non-treated group, supported by the results of histopathological analysis.The results of antitumor effectivity observed on tumor-bearing mice after neutron irradiation indicated possible effectivity of gadolinium-based neutron capture therapy treatment.

Published
2015
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25. Research on the memory cutting path of shearer based on genetic algorithm

Author

Dong-pei Sun, Li-li Zhang, Jin-peng Mi, and Chao Tan

Subjects
Engineering, Engineering drawing, business.industry, Coal mining, Energy Engineering and Power Technology, Control engineering, Geotechnical Engineering and Engineering Geology, Recovery rate, Path (graph theory), Genetic algorithm, business, MATLAB, computer, computer.programming_language
Abstract

In order to realize the memory cutting of a shearer, made use of the memorized cutting path and acquisitioned cutting parameters, and realized the teaching and playback of the cutting path. In order to optimize the memory cutting path of a shearer, took into account the constraints of coal mining craft, coal quality and the adaption faculty of coal mining equipments. Genetic algorithm theory was used to optimize the memory cutting of shearer and simulate with Matlab, and realized the most valuable mining recovery rate. The experimental results show that the optimization of the memory cutting path of a shearer based on the genetic algorithm is feasible and obtains the most valuable memory cutting path, improving the ability of shearer automatic cutting.

Published
2010
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