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| 1 | Effects of soil water and nitrogen availability on photosynthesis and water use efficiency of Robinia pseudoacacia seedlings显示文摘The efficient use of water and nitrogen (N) to promote growth and increase yield of fruit trees and crops is well studied.However,little is known about their effects on woody plants growing in arid and semiarid areas with limited water and N availability.To examine the effects of water and N supply on early growth and water use efficiency (WUE) of trees on dry soils,one-year-old seedlings of Robinia pseudoacacia were exposed to three soil water contents (non-limiting,medium drought,and severe drought) as well as to low and high N levels,for four months.Photosynthetic parameters,leaf instantaneous WUE (WUEi) and whole tree WUE (WUEb) were determined.Results showed that,independent of N levels,increasing soil water content enhanced the tree transpiration rate (Tr),stomatal conductance (Gs),intercellular CO2 concentration (Ci),maximum net assimilation rate (Amax),apparent quantum yield (AQY),the range of photosynthetically active radiation (PAR) due to both reduced light compensation point and enhanced light saturation point,and dark respiration rate (Rd),resulting in a higher net photosynthetic rate (Pn) and a significantly increased whole tree biomass.Consequently,WUEi and WUEb were reduced at low N,whereas WUE i was enhanced at high N levels.Irrespective of soil water availability,N supply enhanced Pn in association with an increase of Gs and Ci and a decrease of the stomatal limitation value (Ls),while Tr remained unchanged.Biomass and WUEi increased under non-limiting water conditions and medium drought,as well as WUEb under all water conditions;but under severe drought,WUEi and biomass were not affected by N application.In conclusion,increasing soil water availability improves photosynthetic capacity and biomass accumulation under low and high N levels,but its effects on WUE vary with soil N levels.N supply increased Pn and WUE,but under severe drought,N supply did not enhance WUEi and biomass. | Xiping Liu Yangyang Fan Junxia Long Ruifeng Wei Roger Kjelgren Chunmei Gong Jun Zhao | 2013 | Journal of Environmental Sciences2013，25，3： | 15 |
| 2 | Study on the optimization of the combined blown converter process in Chongqing Iron and Steel Company显示文摘The effects of lance height and bottom blown flowrate on the mixed time,the splashing amount,the penetrating depth,and the level fluctuation of an 85 t combined blown converter have been studied using a water model.The results show that the maximal stirring energy is provided to the bath at the top lance height of about 50-100 mm.When the top lance height is in the range of 90- 110 mm,the splashing amount caused by the top jet can reach the maximal value.The appropriate operational parameters of Chongqing Iron and Steel Company(CISC)converter have been established that the top lance height is 1600-1760 mm and the bot- tom blowing flowrate is 240-480 Nm^3/h in the primary phase of a heat,1100-1300 mm and 160-200 Nm^3/h in the second phase,and 1040-1120 mm and 200-350 Nm^3/h in the end phase.Also,the trial shows that the metallurgical result of the studied blow pattern is better than that of the former pattern.At the starting 3-4 min of a heat,the strong splashing is eliminated. | Ping Tang Yangyang Yu Guanghua Wen Mingmei Zhu Liang Zhou Yiju Long Qing Liang | 2008 | Journal of University of Science and Technology Beijing2008，15，1： | 2 |
| 3 | Modeling and optimization of the molten salt cleaning process显示文摘 | Yangyang Long Jianzhi Li Douglas H. Timmer Robert E. Jones Miguel A. Gonzalez | 2013 | Journal of Cleaner Production2013，，： | 1 |
| 4 | Theoretical models of void nucleation and growth for ductile metals under dynamic loading: A review显示文摘Void nucleation and growth under dynamic loading are essential for damage initiation and evolution in ductile metals.In the past few decades,the development of experimental techniques and simulation methods has helped to reveal a wealth of information about the nucleation and growth process from its microscopic aspects to macroscopic ones.Powerful and effective theoretical approaches have been developed based on this information and have helped in the analysis of the damage states of structures,thereby making an important contribution to the design of damageresistant materials.This Review presents a brief overview of theoretical models related to the mechanisms of void nucleation and growth under dynamic loading.Classical work and recent research progress are summarized,together with discussion of some aspects deserving further study. | Haonan Sui Long Yu Wenbin Liu Ying Liu Yangyang Cheng Huiling Duan | 2022 | Matter and Radiation at Extremes2022，7，1： | 0 |
| 5 | The role of intestinal flora on tumorigenesis,progression,and the efficacy of PD-1/PD-L1 antibodies in colorectal cancer显示文摘Intestinal flora affects the maturation of the host immune system,serves as a biomarker and efficacy predictor in the immunotherapy of several cancers,and has an important role in the development of colorectal cancer(CRC).Anti-PD-1/PD-L1 antibodies have shown satisfactory results in MSI-H/d MMR CRC but performed poorly in patients with MSS/p MMR CRC.In recent years an increasing number of studies have shown that intestinal flora has an important impact on anti-PD-1/PD-L1 antibody efficacy in CRC patients.Preclinical and clinical evidence have suggested that anti-PD-1/PD-L1 antibody efficacy can be improved by altering the composition of the intestinal flora in CRC.Herein,we summarize the studies related to the influence of intestinal flora on anti-PD-1/PD-L1 antibody efficacy in CRC and discuss the potential underlying mechanism(s).We have focused on the impact of the intestinal flora on the efficacy and safety of anti-PD-1/PD-L1 antibodies in CRC and how to better utilize the intestinal flora as an adjuvant to improve the efficacy of anti-PD-1/PD-L1 antibodies.In addition,we have provided a basis for the potential of the intestinal flora as a new treatment modality and indicator for determining patient prognosis. | Sen Wang Benling Xu Yangyang Zhang Guangyu Chen Peng Zhao Quanli Gao Long Yuan | 2024 | Cancer Biology & Medicine2024，21，1： | 0 |
| 6 | Natural variations of OsAUX5,a target gene of OsWRKY78,control the neutral essential amino acid content in rice grains显示文摘Grain essential amino acid(EAA)levels contribute to rice nutritional quality.However,the molecular mechanisms underlying EAA accumulation and natural variation in rice grains remain unclear.Here we report the identification of a previously unrecognized auxin influx carrier subfamily gene,OsAUX5,which encodes an amino acid transporter that functions in uptake of multiple amino acids.We identified an elite haplotype of Pro::OsAUX5^(Hap2) that enhances grain EAA accumulation without an apparent negative effect on agronomic traits.Natural variations of OsAUX5 occur in the cis elements of its promoter,which are differentially activated because of the different binding affinity between OsWRKY78 and the W-box,contributing to grain EAA variation among rice varieties.The two distinct haplotypes were shown to have originated from different Oryza rufipogon progenitors,which contributed to the divergence between japonica and indica.Introduction of the indica-type Pro::OsAUX5^(Hap2) genotype into japonica could significantly increase EAA levels,indicating that indica-type Pro::OsAUX5^(Hap2) can be utilized to increase grain EAAs of japonica varieties.Collectively,our study uncovers an WRKY78–OsAUX5-based regulatory mechanism controlling grain EAA accumulation and provides a potential target for breeding EAA-rich rice. | Yuheng Shi Yuanyuan Zhang Yangyang Sun Ziyang Xie Yu Luo Qiyuan Long Jiahui Feng Xueqing Liu Bi Wang Dujun He Junxia Ren Peizhen Guo Junwei Xing Liqiang He Alisdair RFernie Wei Chen Xianqing Liu Yuehua Luo Cheng Jin Jie Luo | 2023 | Molecular Plant2023，16，2： | 0 |
| 7 | Cooling and Crack Suppression of Bone Material Drilling Based on Microtextured Bit Modeled on Dung Beetle显示文摘In recent years,the number of patients with orthopedic diseases such as cervical spondylosis has increased,resulting in an increase in the demand for orthopedic surgery.However,thermal necrosis and bone cracks caused by surgery severely restrict the development and progression of orthopedic surgery.For the material of cutting tool processing bone in bone surgery of drilling high temperature lead to cell death,easy to produce the problem such as crack cause secondary damage effects to restore,in this paper,a bionic drill was designed based on the micro-structure of the dung beetle's head and back.The microstructure configuration parameters were optimized by numerical analysis,and making use of the optical fiber laser marking machine preparation of bionic bit;through drilling test,the mathematical model of drilling temperature and crack generation based on micro-structure characteristic parameters was established by infrared thermal imaging technology and acoustic emission signal technology,and the cooling mechanism and crack suppression strategy were studied.The experimental results show that when the speed is 60 m/min,the cooling effects of the bionic bit T1 and T2 are 15.31%and 19.78%,respectively,and both kinds of bits show obvious crack suppression effect.The research in this paper provides a new idea for precision and efficient machining of bone materials,and the research results will help to improve the design and manufacturing technology and theoretical research level in the field of bone drilling tools. | Yunsong Lian Xiande Chen Chaoping Xie Yangyang Long Fengtian Lin Wei Zhou Xuyang Chu | 2023 | Chinese Journal of Mechanical Engineering2023，36，2： | 0 |
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