The Influence of L2 Motivational Self System on the Willingness to Communicate among Chinese Undergraduate Students in English Medium Instruction Classrooms

Ruonan Wang HONG KONG ACADEMY OF SOCIAL SCIENCES 2024 Journal of Social Science Development Research Vol.2 No.2

This study adopts a case study approach to investigate the impact of the L2 motivational self system on Chinese undergraduate students participating in English Medium Instruction (EMI) programs. Through individual case analyses within authentic environments, the research explores how the ideal L2 self and external pressures influence students' willingness to communicate and decision-making processes in EMI settings. Three participants engaged in EMI programs were interviewed via the Tencent Meeting platform. The study employed NVivo software for qualitative data analysis. The results indicate that the ideal L2 self plays a crucial role in shaping students' willingness to communicate in EMI classrooms. Students with a clear ideal L2 self demonstrate higher levels of participation and engagement, driven by their desire to bridge the gap between their current English proficiency and their ideal level. Furthermore, external pressures, such as family expectations and career aspirations, contribute to the formation of the ought-to L2 self. While these pressures enhance students' motivation to improve their English skills, they may also induce anxiety and reluctance to participate, stemming from the fear of negative evaluation. Additionally, the ought-to L2 self strongly influences students' decisions to enroll and actively engage in EMI programs. While EMI programs align with students' personal and professional goals, individual differences in self-concept lead to variations in communication willingness among students.

Determination of the air-kerma in mammography x-rays at NIM

Ji Wang,Siming Guo,Pingzhou Lu,Jinjie Wu,Ying Liu,Ruonan Li,Yulong Wang 한국물리학회 2022 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.81 No.4

Breast cancer has become the top killer of women’s health in the world, and mammography X-ray has become the gold standard in various diagnostic methods, due to its low energy, low dose and high resolution. To meet the quality control requirements of mammography X-rays dose in clinical, the National Institute of Metrology (NIM,China) has established a mammography X-ray reference radiation facility. The radiation quality half-value layer (HVL) range from 0.274 to 0.364 mm (aluminum) meets the requirements of IEC61267, and a new parallel-plate free-air ionization is designed. At NIM, various correction factors were measured and simulated, and fnally, the absolute measurement of the X-ray air kerma rate of the mammography was realized. By analysis, the combined standard uncertainty of the air kerma is 0.44%. Provide traceability services for the use and quality control of mammography in China.

FLOURY ENDOSPERM12 Encoding Alanine Aminotransferase 1 Regulates Carbon and Nitrogen Metabolism in Rice

Mingsheng Zhong,Xi Liu,Feng Liu,Yulong Ren,Yunlong Wang,Jianping Zhu,Xuan Teng,Erchao Duan,Fan Wang,Huan Zhang,Mingming Wu,Yuanyuan Hao,Xiaopin Zhu,Ruonan Jing,Xiuping Guo,Ling Jiang,Yihua Wang,Jianmi 한국식물학회 2019 Journal of Plant Biology Vol.62 No.1

Starch is a major storage substance in cerealgrains, and starch biosynthesis is a complex process. In orderto elucidate regulation of the starch biosynthesis pathway, wescreened a series of rice (Oryza sativa L.) endospermmutants. In this study, we identified a floury white-coreendosperm mutant named floury endosperm12 (flo12). Theflo12 mutant exhibited loosely packed starch granules and alower thousand kernel weight compared to wild type. Semithinsections revealed that compound starch grains (SG) inflo12 interior endosperm cells were developed abnormally. Furthermore, amylose content was decreased, while totalprotein content was significantly increased in flo12 grains. Map-based cloning showed that FLO12 encodes rice alanineaminotransferase 1 (OsAlaAT1). OsAlaAT1 is highly expressedin developing endosperm. Subcellular localization showedthat OsAlaAT1 is localized in the cytosol. Moreover, theexpression of most starch synthesis-related genes wasdecreased, while most of the storage protein coding geneshad elevated expression levels in the flo12 mutant. Inaddition, overexpression of the OsAlaAT1 gene increasedgrain weight. In brief, we demonstrated that OsAlaAT1regulates carbon and nitrogen metabolism, which provides anew insight for the improvement of rice quality and yield.

A Joint Control Strategy for Automobile Active Grille Shutter and Cooling Fan

Liu Chuanbo,Wang Zhengju,Fan Chaojie,Zhang Ruonan,Man Xingjia 한국자동차공학회 2021 International journal of automotive technology Vol.22 No.6

As an emerging technology improving fuel consumption, active grille shutter (AGS) has been applied in engine cooling system. For the reason of unreasonable matching method of grille opening and cooling fan, the problem of engine overcooling is widespread. As components with similar function of adjusting cooling air flow, the AGS and the cooling fan are separated from each other in parameter matching and operation which reduce cooling efficiency and fuel economy. To achieve precise cooling and improve fuel economy, a joint control strategy for AGS and cooling fan was proposed by using computational fluid dynamics. In order to verify the feasibility of the strategy, the fuel economy tests were carried out at 0 km/h, 90 km/h and 120 km/h, respectively. The results showed that the fuel consumption under the three working conditions was reduced by 0.01 L/ 100 km, 0.07 L/ 100 km and 0.13 L/ 100 km, respectively, indicating that the proposed strategy can significantly reduce fuel consumption.

Study on Treatment of Basic Yellow 28 dye Wastewater by Micro-nano Bubble Ozone Catalytic Oxidation

Jie Wei,Hongwei Sha,Ruonan Wang 대한환경공학회 2023 Environmental Engineering Research Vol.28 No.5

Controlled kinetic Monte Carlo simulation of laser improved nano particle deposition process

Song, Ji-Hyeon,Choi, Kweon-Hoon,Dai, Ruonan,Choi, Jung-Oh,Ahn, Sung-Hoon,Wang, Yan Elsevier Sequoia 2018 Powder Technology Vol. No.

<P><B>Abstract</B></P> <P>Thin film coating is important in many applications such as electrodes, sensors, and energy devices. Nano particle deposition is one of the most used additive manufacturing processes for coating. It has advantages of efficiency, cost effectiveness, and ease of controlling film properties. Recent experimental studies showed that laser can enhance the efficiency of the deposition process. However, there is still a lack of fundamental understanding of the laser treatment effect on nano particles, which makes process control difficult and ad hoc. In this research, the effect of laser treatment on morphological change of films in the nano particle deposition system is studied with controlled kinetic Monte Carlo (cKMC) simulation. cKMC is a generalized version of classical kinetic Monte Carlo, which can be used to simulate both controlled and self-assembly processes at atomistic level with larger sizes and longer time scales than molecular dynamics. In this work, a coarse-grained cKMC model is constructed to simulate diffusion, laser irradiation, and deposition processes simultaneously. The simulation model is calibrated with experimental data. Different laser irradiation conditions on alumina particles are studied, which result in different thickness and porosity of the deposited layers. A Gaussian process regression modeling approach is also developed for model validation with the consideration of observation bias and discrepancy. Simulation results are in good agreement with the experimental results.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Alumina nano particle deposition in aerosol flow is simulated with controlled kinetic Monte Carlo. </LI> <LI> Laser irradiation, diffusion, and deposition processes are simulated efficiently. </LI> <LI> A Gaussian process regression approach is proposed for model validation when observation bias is present. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Melatonin prevents lung injury by regulating apelin 13 to improve mitochondrial dysfunction

Lu Zhang,Fangli Liu,Xiaomin Su,Yue Li,Yining Wang,Ruonan Fang,Yingying Guo,Tongzhu Jin,Huitong Shan,Xiaoguang Zhao,Rui Yang,Hongli Shan,Haihai Liang 생화학분자생물학회 2019 Experimental and molecular medicine Vol.51 No.-

Pulmonary fibrosis is a progressive disease characterized by epithelial cell damage, fibroblast proliferation, excessive extracellular matrix (ECM) deposition, and lung tissue scarring. Melatonin, a hormone produced by the pineal gland, plays an important role in multiple physiological and pathological responses in organisms. However, the function of melatonin in the development of bleomycin-induced pulmonary injury is poorly understood. In the present study, we found that melatonin significantly decreased mortality and restored the function of the alveolar epithelium in bleomycin-treated mice. However, pulmonary function mainly depends on type II alveolar epithelial cells (AECIIs) and is linked to mitochondrial integrity. We also found that melatonin reduced the production of reactive oxygen species (ROS) and prevented apoptosis and senescence in AECIIs. Luzindole, a nonselective melatonin receptor antagonist, blocked the protective action of melatonin. Interestingly, we found that the expression of apelin 13 was significantly downregulated in vitro and in vivo and that this downregulation was reversed by melatonin. Furthermore, ML221, an apelin inhibitor, disrupted the beneficial effects of melatonin on alveolar epithelial cells. Taken together, these results suggest that melatonin alleviates lung injury through regulating apelin 13 to improve mitochondrial dysfunction in the process of bleomycin-induced pulmonary injury.