Is there a linkage between the tropical cyclone activity in the southern Indian Ocean and the Antarctic Oscillation? : LINKAGE BETWEEN TROPICAL CYCLONE AND AAO

Mao, Rui,Gong, Dao-Yi,Yang, Jing,Zhang, Zi-Yin,Kim, Seong-Joong,He, Hao-Zhe American Geophysical Union 2013 Journal of geophysical research. Atmospheres Vol.118 No.15

Molecular Dynamics Simulation to Investigate the Rake Angle Effects on Nanometric Cutting of Single Crystal Ni3Al

Rui-cheng Feng,Yong-nian Qi,Zong-xiao Zhu,Wen-yuan Song,Hai-yan Li,Mao-mao Wang,Zhi-yuan Rui,Feng-shou Gu 한국정밀공학회 2020 International Journal of Precision Engineering and Vol.21 No.4

Molecular dynamics, an eff ective method to gain an insight into nanometric behaviour of materials, was employed to studythe nano-cutting behaviour of single crystal Ni 3 Al in nanometric scale. In this paper, comparisons were made for compressive/tensile stress, subsurface damage and surface roughness with three rake angles of a diamond tool. Subsurface damage waspartitioned by region and studied with work hardening in detail. A model for precise characterization of surface roughnesswas established with consideration of local surface fl uctuation. Simulation results showed that the chip thickness increasedas rake angle changed from negative to positive, and the boundary formed between tensile and compressive stress was inconsistent with the glide direction of stacking fault. Subsurface damage decreased as the increase of rake angle, and regularglide planes of stacking faults were found in front of the cutting tool. Further, the pinned dissociated 1/2 < 110 > superpartialdislocation with anti-phase boundary was demonstrated. The model was tested and characterized by implanted pits onperfect surface. Results showed that surface roughness can be well characterized, and an evident discrepancy was observedamong three rake angles, especially for 30° rake angle, which showed an distinct smooth surface compared with the others.

Constant and ever-Changing

RUI QI MAO 한국색채학회 2023 International Invitation Exhibition of Color Works Vol.- No.-

Impact of the Arctic Oscillation on East Asian Dust Storm in Spring

Rui Mao,Chang-Hoi Ho 한국기상학회 2009 한국기상학회 학술대회 논문집 Vol.2009 No.10

An Examination of Wang Rongpei’s Translation of The Peony Pavilion from the Viewpoint of Reframing Narrative Theory

Rui Mao 한국동서비교문학학회 2022 동서 비교문학저널 Vol.- No.60

This paper examines Chinese translator Wang Rongpei’s English translation of The Peony Pavilion from the perspective of narrative theory. As a classical romantic tragicomedy written in 1598, The Peony Pavilion revolves around the extraordinary love story between Du Liniang and Liu Mengmei, set against the social background of the Southern Song (1127-1279) dynasty. Among the numerous English translations of this work, Wang Rongpei’s version stands out as one of particular brilliance, as evidenced by its inclusion in the Library of Chinese Classics. According to the narrative theory put forward by Mona Baker, translators can consciously participate in the construction of the source text’s “story” by strengthening or undermining certain aspects of the narrative they mediate. This paper examines how the translator, who is not merely a passive receiver of a source text, actively mobilizes various strategies to reframe the story of The Peony Pavilion. In doing so, four aspects of the translated invite specific critical attention: its temporal and spatial framing, selective appropriation of textual material, framing by labelling, and the repositioning of participants. This paper argues that in the process of reframing the source text, the translator intentionally reinforces ontological narratives and attenuates public narratives with the aim of delivering a text more accommodating of the tastes of contemporary English-language readers. Finally, the purpose of this paper is to deepen understanding of Wang’s translation practices and outcomes, and to offer for traditional oriental drama translators a key point of reference.

The Influence of Vegetation Variation on Northeast Asian Dust Activity

Rui Mao,허창회,Song Feng,Dao-Yi Gong,Yaping Shao 한국기상학회 2013 Asia-Pacific Journal of Atmospheric Sciences Vol.49 No.1

In this study, we investigate the influence of vegetation variations on dust activity (dust load, dust transport in the troposphere,and dust weather frequency) over Northeast Asia during springtime. By using the Integrated Wind Erosion Modeling System,two model experiments are run over four-month periods, from February 1 to May 31, for each year from 1982 to 2006; one experiment uses the observed atmospheric conditions and vegetation (OBS), and the other uses the specified atmospheric conditions in 2006 and the observed vegetation (CTRL). Comparison of the two model experiments reveals that there are sensitive regions in southeastern Mongolia and central northern China, in which vegetation has a large potential to influence dust activity due to both the high dust emission rate and large variations in vegetation coverage. Over these sensitive regions,vegetation effectively lessens dust loads on interannual and interdecadal timescales; dust load is decreased by 2864 μg m−2 for an increment of 0.1 in the normalized difference vegetation index (NDVI). Vegetation increase in the sensitive areas also reduces two major branches of dust transports in the low troposphere; one stretches from eastern Mongolia to regions northeastward, and the other flows across the south of northeastern China to Korea. In addition to dust loads and transports, vegetation increase in the sensitive areas evidently decreases dust storm frequency and blowing dust frequency, but it exerts a weak influence on the floating dust frequency. In the sensitive regions, as NDVI increases by 0.1, dust storms, blowing dust,and floating dust decrease by 4.0 days/spring, 1.5 days/spring, and 0.2 days/spring, respectively. In summary, vegetation variations in southeastern Mongolia and central northern China have considerable impact on northeast Asian dust during springtime.

In-situ photoelectron spectroscopy with online activity measurement for catalysis research

Rui Chang,Young Pyo Hong,Stephanus Axnanda,Baohua Mao,Naila Jabeen,Suidong Wang,Renzhong Tai,Zhi Liu 한국물리학회 2012 Current Applied Physics Vol.12 No.5

We report Ambient pressure X-ray Photoelectron Spectroscopy Endstation with an integrated chemical analytical system that consists of a residual gas analyzer in the 2nd differential pumping stage and a new low-reactive sample holder heating assembly. This system has a linear response to the reaction chamber gas pressure. The sample heating assembly also has a low dark reaction rate up to 400 ℃ for H2 and CO oxidation. We expect this chemical analytical system will expand our capabilities in conducting inoperando catalysis research.

Research and Improvement on Active Compliance Control of Hydraulic Quadruped Robot

Rui Zhu,Qingjun Yang,Jiaxing Song,Shangru Yang,Yudong Liu,Qi Mao 제어·로봇·시스템학회 2021 International Journal of Control, Automation, and Vol.19 No.5

This paper focuses on active compliance control of hydraulic quadruped robot, especially the analysis of the inner-loop of the coupled system. Current researches on active compliance control regard the bandwidth of the inner loop of the system as infinite, while ignoring that the extra-load will cause the inner-loop response characteristics to deteriorate when the leg is in the stance phase. In this work, we first briefly introduced the structure of the robot, and its kinematics and dynamics are analyzed. Next, the robot’s active compliance control framework is established, and the inner-loop two-cylinder coupling system is analyzed in depth. It can be concluded that the existence of low frequency poles in the system is the main reason for the poor response characteristics. Then through the analysis of the state equation and transfer function matrix of the multi-input multi-output system, we show that the equivalent hydraulic spring stiffness (EHSS) is the main factor affecting the zero-pole distribution. Furthermore, we optimize the structure to increase the EHSS to improve the response characteristics of the system. Finally, the co-simulation platform and single-leg experiment bench are introduced. The simulation and experimental results show that the response speed of the inner-loop control is significantly improved after optimization, and the robot with active compliance control strategies can significantly reduce the impact of the foot.

Effect of Saccharomyces cerevisiae Fermentation Product on Lactation Performance and Lipopolysaccharide Concentration of Dairy Cows

Zhang, Rui-Yang,Yoon, Ilkyu,Zhu, Wei-Yun,Mao, Sheng-Yong Asian Australasian Association of Animal Productio 2013 Animal Bioscience Vol.26 No.8

To evaluate lactation performance and changes in plasma and fecal lipopolysaccharide (LPS) concentrations in response to the supplementation of Saccharomyces cerevisiae fermentation product (SC), two dairy farms were selected. On each farm, 32 cows in early to mid lactation (21 to 140 DIM) were blocked by parity and days in milk (DIM), and randomly assigned to one of the two treatments within block (Control or 56 g SC/cow/d). Effect of SC on lactation performance (daily) and changes in blood and fecal LPS level were examined on d 0 and 28 of supplementation. The results showed that SC supplementation increased lactation performance of dairy cows on both farms. On Farm 1, milk production, 3.5% fat corrected milk (FCM), and yield of milk fat and protein were greater (p<0.01) for cows supplemented with SC. Supplementation of SC increased percentage milk fat (p = 0.029) from 81 to 110 DIM. There was no significant effect (p>0.05) of SC supplementation on percentage of milk protein, dry matter intake and feed efficiency. On Farm 2, cows supplemented with SC had a greater (p<0.05) milk yield, percentage of milk fat and milk protein, yield of milk fat and protein, 3.5% FCM and feed efficiency. Supplemental SC had no effect on LPS concentrations in feces (p>0.05) while it trended to reduce (p = 0.07 or 0.207) the concentration in plasma. The results indicate that supplemental SC can increase lactation performance of dairy cattle and has potential for reducing plasma LPS concentration.

The molecular mechanism of propionate-regulating gluconeogenesis in bovine hepatocytes

Pang Rui,Xiao Xiao,Mao Tiantian,Yu Jiajia,Huang Li,Xu Wei,Li Yu,Zhu Wen 아세아·태평양축산학회 2023 Animal Bioscience Vol.36 No.11

Objective: Cows that are nursing get around 80% of their glucose from liver gluconeogenesis. Propionate, a significant precursor of liver gluconeogenesis, can regulate the key genes involved in hepatic gluconeogenesis expression, but its precise effects on the activity of enzymes have not yet been fully elucidated. Therefore, the aim of this study was to investigate the effects of propionate on the activity, gene expression, and protein abundance of the key enzymes involved in the gluconeogenesis of dairy cow hepatocytes. Methods: The hepatocytes were cultured and treated with various concentrations of sodium propionate (0, 1.25, 2.50, 3.75, and 5.00 mM) for 12 h. Glucose content in the culture media was determined by an enzymatic coloring method. The activities of gluconeogenesis related enzymes were determined by enzyme linked immunosorbent assay kits, and the levels of gene expression and protein abundance of the enzymes were detected by real-time quantitative polymerase chain reaction and Western blot, respectively. Results: Propionate supplementation considerably increased the amount of glucose in the culture medium compared to the control (p<0.05); while there was no discernible difference among the various treatment concentrations (p>0.05). The activities of cytoplasmic phosphoenolpyruvate carboxylase (PEPCK1), mitochondrial phosphoenolpyruvate carboxylase (PEPCK2), pyruvate carboxylase (PC), and glucose-6-phosphatase (G6PC) were increased with the addition of 2.50 and 3.75 mM propionate; the gene expressions and protein abundances of PEPCK1, PEPCK2, PC, and G6PC were increased by 3.75 mM propionate addition. Conclusion: Propionate encouraged glucose synthesis in bovine hepatocytes, and 3.75 mM propionate directly increased the activities, gene expressions and protein abundances of PC, PEPCK1, PEPCK2, and G6PC in bovine hepatocytes, providing a theoretical basis of propionate-regulating gluconeogenesis in bovine hepatocytes.