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1Stability analysis of the temperature cracks in Xiaowan arch dam显示文摘In the Xiaowan arch dam there are massive temperature cracks nearly parallel to the dam axis. Obviously, whether the cracks may spread or not during the water storage process is one of the crucial factors for the safety of a dam. In this paper, a new type of crack element, in which the contact component is implicitly included into the concrete component, is proposed to simulate the effects of the existing cracks. The crack element is proved by numerical example to share the merits of both conventional contact elements and joint elements. With a finite element model of the cracked arch dam together with its rock foundation established, the transient displacement and stress fields of the dam are obtained. The complicated rock foundation, the construction process of the arch dam, the massive cracks, the transient temperature field, as well as the water storage process have been taken into consideration in the simulation. In addition to the global model, several sub-models for typical crack tips are also generated with finer elements placed around the tips. Thus, more accurate displacement and stress distribution are obtained by simultaneous sub-model simulation. Based on the calculation of stress intensity factor for crack tips by extension method, the temperature cracks in the Xiaowan arch dam are finally proved to be stable.WANG WeiMing DING JianXin WANG GuoJin ZOU LiChun CHEN ShengHong 2011Science China(Technological Sciences)2011,54,3:12
2Evaluation of cracking potential for concrete arch dam based on simulation feedback analysis显示文摘It is still very difficult for researchers and engineers to implement the simulation analysis including a complete process and a full model with the complicated arch dam and the foundation, and to evaluate the cracking potential in the construction and service periods. To take Xiaowan project of China for an example, a practical system of simulation feedback analysis, a specific cracking criterion, and a resolution for the conflicting requirements of temperature and stress/strain simulation are presented, which are put into a successful practice. The simulation results of temperature, stress, and cracking are identical well with the monitor data. A modified temperature control measure is propounded, and the significant effect is gained by adopting the new scheme.FU ShaoJun HE Ting WANG GuoJin ZHANG ShiHu ZOU LiChun CHEN ShengHong 2011Science China(Technological Sciences)2011,54,3:10
3Contemplation on China’s Energy-Development Strategies and Initiatives in the Context of Its Carbon Neutrality Goal显示文摘1.Introduction Climate change has become a global nontraditional security challenge,and achieving carbon neutrality is the global trend of the era that will determine the future of humanity[1-5].So far,more than 137 countries have set goals or pledged to achieve carbon neutrality.In September 2020,China committed itself to peak carbon emissions by 2030 and to achieve carbon neutrality by 2060,in what are known as China’s“dual carbon goals”[6].Houliang Dai Yinao Su Lichun Kuang Jizhen Liu Dazhao Gu Caineng Zou 2021Engineering2021,7,12:6
4Recent advances in high slope reinforcement in China: Case studies显示文摘This paper reviews a number of engineering technologies and workmanships for addressing the challenging issues concerning possible landslides in large-scale slope reinforcement projects in China.It includes:(1) the multi-point anchored piles with a depth of 64 m in the Jietai Temple rehabilitation project,(2) soil nailing strengthened by driven pipe grouting technique covering an area of530 m × 100 m(length × height) in the Xiluodu hydropower project,(3) the cantilever piles extending vertically from the slope toe to stabilize a 300 m high slope at the Xiaowan hydropower station,(4) a new and simple workmanship for building a pile with cross-sectional area of 20 m × 5 m in the Hongjiadu hydropower station,and(5) comprehensive reinforcement scheme proposed for excavation of a 530 m high slope in Jinping I hydropower station.These new technologies can provide valuable experiences for reinforcement of high slopes of similar projects in China and other regions and countries with similar geological conditions.Zuyu Chen Zhen Wang Hao Xi Zeyan Yang Lichun Zou Zhong Zhou Chuangbing Zhou 2016Journal of Rock Mechanics and Geotechnical Engineering2016,8,6:2
5Tailoring biochar by PHP towards the oxygenated functional groups(OFGs)-rich surface to improve adsorption performance显示文摘In this work,a modification method of H_(3)PO_(4)plus H_(2)O_(2)(PHP)was introduced to targetedly form abundant oxygenated functional groups(OFGs)on biochar,and methylene blue(MB)was employed as a model pollutant for adsorption to reflect the modification performance.Results indicated that parent biochars,especially derived from lower temperatures,substantially underwent oxidative modification by PHP,and OFGs were targetedly produced.Correspondingly,approximately 21.5-fold MB adsorption capacity was achieved by PHP-modified biochar comparing with its parent biochar.To evaluate the compatibility of PHP-modification,coefficient of variation(CV)based on MB adsorption capacity by the biochar from various precursors was calculated,in which the CV of PHP-modified biochars was 0.0038 comparing to0.64 of the corresponding parent biochars.These results suggested that the PHP method displayed the excellent feedstock compatibility on biochar modification.The maximum MB adsorption capacity was454.1 mg/g when the H_(3)PO_(4)and H_(2)O_(2)fraction in PHP were 65.2%and 7.0%;the modification was further intensified by promoting temperature and duration.Besides,average 94.5%H_(3)PO_(4)was recovered after 10-batch modification,implying 1.0 kg H_(3)PO_(4)(85%)in PHP can maximally modify 2.37 kg biochar.Overall,this work offered a novel method to tailor biochar towards OFGs-rich surface for efficient adsorption.Xinyue Xiong Zhanglin Liu Li Zhao Mei Huang Lichun Dai Dong Tian Jianmei Zou Yongmei Zeng Jinguang Hu Fei Shen 2022Chinese Chemical Letters2022,33,6:1
6Phylogenetic and molecular dating analysis of Taiwan Blue Pheasant ( Lophura swinhoii )显示文摘Lichun Jiang Gaochao Wang Rui Peng Quekun Peng Fangdong Zou 2014Gene2014,,:1
7Corrigendum to ‘‘Contemplation on China’s Energy-DevelopmentStrategies and Initiatives in the Context of its Carbon Neutrality Goal”[Engineering 7 (2021) 1684-1687]显示文摘The authors regret to inform that the first author should change to Yinao Su,and would like to add an author Haixia Huang to the author list.The correct order of the authors should be Yinao Su,Houliang Dai,Lichun Kuang,Jizhen Liu,Dazhao Gu,Caineng Zou,and Haixia Huang.The authors would like to apologize for any inconvenience caused.Yinao Su Houliang Dai Lichun Kuang Jizhen Liu Dazhao Gu Caineng Zou Haixia Huang 2022Engineering2022,8,4:0
8RUNX1 promotes mitophagy and alleviates pulmonary inflammation during acute lung injury显示文摘Dear Editor,Acute lung injury(ALI)is a significant contributor to the development of acute respiratory distress syndrome(ARDS),which is a severe clinical condition associated with high morbidity and mortality.1 It is increasingly evident that preserving mitochondrial health in alveolar epithelial cells holds great therapeutic potential for ARDS.2 Mitophagy,a cellular process aimed at maintaining mitochondrial health,plays a critical role in this regard.3 Therefore,gaining a comprehensive understanding of the factors that regulate mitophagy in alveolar epithelial cells during ALI could greatly inform the development of future therapeutic approaches for ARDS.Xiaoju Tang Lichun Zhong Xin Tian Ying Zou Silu Hu Jia Liu Ping Li Min Zhu Fengming Luo Huajing Wan 2023Signal Transduction and Targeted Therapy2023,8,9:0
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