Search

Your search keyword '"Yang, Yanguo"' showing total 24 results
Start Over Author "Yang, Yanguo"
24 results on '"Yang, Yanguo"'

2. Research on stress variation law of floor under coal pillar with different widths based on three-hinged oblique arch

Author

LUO Tongtong, YANG Yanguo, QIAO Yonggang, ZHAO Jindian, MA Yikun, and WANG Jiang

Subjects
three-hinged oblique arch, floor stress, overburden structure of stope, regional coal pillar width, flac3d, Mining engineering. Metallurgy, TN1-997
Abstract

In order to obtain the overlying strata structure and the stress transfer law of floor under the influence of section coal pillar after the upper protective layer is fully mined, the rational arch axis equation is deduced based on the three-hinged inclined arch theory. The stress distribution of coal pillar floor with different widths is simulated numerically. Based on two methods of three-hinged inclined arch and elastic mechanics theory, the analytic solution of stress distribution of bottom plate of protective layer is obtained and verified by field measurement. The results show that the shape parameters of three-hinged inclined arch are dynamically correlated with the width of retained coal pillar, the mining height of coal seam and the pressure relief width of goaf. When the width of coal pillar is larger than 15 m, the additional stress caused by three-hinged inclined arch structure will occur in the re-compacted area of goaf floor, and the extreme stress point will move to the center of goaf with the increase of coal pillar width. The field test shows that the stoping roadway of protected layer should be arranged in the wrong way, and the reasonable wrong distance is 10-20 m.

Published
2023
Full Text
View/download PDF

8. Tailoring the efficient laser‐absorption‐melting behavior of Bi2O3‐B2O3‐ZnO‐Nd2O3 glass for the OLED encapsulation.

Author

Leng, Yue, Chen, Yaoyi, Yang, Yanguo, Si, Yunxiang, Xie, Tianyi, Wang, Huaizhi, Meng, Fancheng, Ren, Haishen, and Lin, Huixing

Subjects
DIRECT energy conversion, GLASS, ABSORPTION coefficients, ELECTRON transitions, GLASS structure, ANTIREFLECTIVE coatings, PHOSPHATE glass
Abstract

The efficient 810 nm laser energy conversion of glass frit had been proven to be the key to the long‐term hermetic encapsulation of Organic Light Emitting Display (OLED). A direct laser energy conversion laser‐assisted Bi2O3‐B2O3‐ZnO‐Nd2O3 sealing glass material without extra laser absorbent such as carbon black, was designed and systematically investigated. The addition of Nd2O3, as glass modifiers with higher cationic field strength, could be conducive to enhancing the polymerization of glass network structure, manifesting that the glass‐transition temperature Tg, onset‐crystallization temperature Tc and thermal stability ΔT (ΔT = Tc‐Tg) increased, while thermal expansion coefficient CTE dropped to 9.72×10−6/°C and advantageously matched with the glass substrate (8±1×10−6/°C). More importantly, the absorption rate of BBZ‐Nd glass was more than 50 % between 800∼810 nm owing to the 4f‐4f electron transition of Nd3+ ions, and yet the reflectivity and transmittance of the wavelength at 800–810 nm were lower. As optimal compositions, the addition of 3.0 wt% Nd2O3 in Bi2O3‐B2O3‐ZnO‐Nd2O3 glass frit with higher absorption coefficients (80 %) led to instantaneous bonding encapsulation between glass substrates without interfacial cracks or pores with the 808 nm wavelength of the laser at 20 W and 2.4 mm/s. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

9. 月基通信模型以及A/D 高速采集的另一种方案

Author

Yang, Yanguo

Subjects
ComputerApplications_COMPUTERSINOTHERSYSTEMS
Abstract

In recent years, Space-X's Starlink program has attracted worldwide attention. It hopes to build a dense satellite chain network in Low earth orbit in the near future. This can make the world can easily enjoy Internet services. At the same time, China's lunar exploration project is also gradually advancing, but the above process is limited by the high cost of rocket launch. Here, I propose a model that can reduce the cost of rocket launch, and another scheme of A/D high-speed acquisition.

Published
2021

10. Challenge and Path of Physical Health Promotion for Children and Adolescents in China on the New Journey: Learning and Thinking Based on the Spirit of 20th CPC National Congress.

Author

WANG Xiaozan, YANG Yanguo, KONG Lin, ZHANG Junxia, and YU Huasen

Abstract

The successful convening of the 20th National Congress of the Communist Party of China ( CPC ) marks the new journey o f building a socialist modern country in an all-round way. It not only provides direction for the promotion of physical health of children and adolescents in China. but also gives new missions and new challenges to the promotion of physical health of children and adolescents in China on the new journey. On the new journey. the social foundation for the promotion of children's and adolescents' physical health in China is relatively weak. and the evaluation system is relatively insufficient. There exist still a certain gap between the needs of talents iii the modernization construction. and the intervention. evaluation. monitoring and other aspects need to be further strengthened and improved. Based on the study and thinking of the spirit of the report of the "20th National Congress of CPC", the research puts forward a new path for the healthy development of children and adolescents' physical health promotion in China on the new journey:(1 ) Implement the strategy of rejuvenating the country through science and education. and strengthen the era mission and responsibility of school physical education in China; ( 2 ) Innovate the intelligent teaching community, and further promote the reform of education methods of physical education and health courses.( 3 ) Build a dynamic tracking management platform to realize digital and accurate monitoring of sports and health behaviors;( 4 ) Strengthen the educational function of evaluation, and improve the comprehensive physical health promotion evaluation mechanism for children and adolescents;(5) Implement Chinese path to modernization and deepen the promotion of physical health for children and adolescents with Chinese characteristics. Taking this as an opportunity, we should unify out thoughts. gather consensus, promote the comprehensive and in-depth development of children and adolescents' physical health promotion in China with Chinese path to modernization, and provide Chinese wisdom, Chinese solutions and Chinese strength for the global children and adolescents' physical health promotion. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

11. Electrochemical formation of a Pt/Zn alloy and its use as a catalyst for oxygen reduction reaction in fuel cells

Author

Sode, Aya, Winton Li, Yang, Yanguo, Phillip C. Wong, Gyenge, Elod, Mitchell, Keith A.R., and Bizzotto, Dan

Subjects
Electrochemistry -- Research, Platinum compounds -- Atomic properties, Zinc compounds -- Atomic properties, Chemicals, plastics and rubber industries
Abstract

The characterization of an electrochemically created Pt/Zn alloy by electron spectroscopy is presented indicating the formation, oxidation of alloy and the room temperature diffusion of the Zn into Pt regions. The Pt./Zn alloy is stable up to 1.2 V/RHE and could only be removed with the oxidation of the base Pt metal either electrochemically or in aqua regia.

Published
2006

14. Reference and Relief; Characteristics and Inspirations of "Finnish Schools on the Move".

Author

YANG Yanguo, WANG Xiaozan, and KONG Lin

Abstract

Finnish Schools on the Move" has made important contributions to making Finnish education world - renowned. It is the main action to promote the coordinated development of Finnish students' physical exercise and cultural learning, and has important enlightenment for China to implement the Integration of Sports and Education Policy and the " Double Reduction" Policy in the new era. Through the systematic examination and in - depth analysis of " Finnish Schools on the Move", this paper summarizes the three core contents of this programme; "creating sports culture", "strengthening teacher training" and "expanding sports activities". Its overall characteristics include: (1) clear target of early childhood sports intervention system; ( 2 ) overall participation in grid liaison management mechanism; (3) professional operation of physical education teacher training mode; (4) systematic design of school physical education evaluation and monitoring mechanism. Enlightenment for school sports development in China in the new era; ( 1) expanding school sports curriculum to cover children's physical education; (2) strengthening the construction of sports environment and implementing comprehensive sports health promotion action through multilateral coordinated action; ( 3) cultivating research teachers and building the intellectual engine of school physical education; (4) exploring sports value-added evaluation and building an intelligent evaluation ecosystem. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results