|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Effects of annealing and firing in wet hydrogen on the dielectric breakdown strengths of alumina ceramics显示文摘Annealing and firing in wet hydrogen are widely used steps in the processing alumina.ceramic insulators that may affect their dielectric breakdown strengths(DBS).In this study,the effects of annealing(at 1300℃for 7 h)and firing in wet hydrogen on the DBS of alumina ceramics(all sintered at 1650℃)were studied,and the underlying mechanisms were analyzed by material characterizations.Annealing reduced the DBS of the 95%alumina ceramics due to the inter-granular phase crystallization,and the reduction in the DBS could be correlated to the reduction in mechanical strength.In contrast,annealing improved the DBS of the 99%alumina ceramic without intergranular phase transformation.Firing in wet hydrogen at 1500℃caused the DBS increment,which can be ascribed to the reduction in the concentrations of point defects and electrical carriers. | Jishi DU Binghua TANG Wei LIU Tao ZhANG Jiagen PENG Hu CHEN Yangjun LEI | 2020 | Journal of Advanced Ceramics2020，9，2： | 1 |
| 2 | Artificial evolution of OsEPSPS through an improved dual cytosine and adenine base editor generated a novel allele conferring rice glyphosate tolerance显示文摘Exploiting novel endogenous glyphosate-tolerant alleles is highly desirable and has promising potential for weed control in rice breeding. Here,through fusions of different effective cytosine and adenine deaminases with nCas9-NG, we engineered an effective surrogate two-component composite base editing system, STCBE-2, with improved C-to-T and A-to-G base editing efficiency and expanded the editing window. Furthermore,we targeted a rice endogenous OsEPSPS gene for artificial evolution through STCBE-2-mediated near-saturated mutagenesis. After hygromycin and glyphosate selection, we identified a novel OsEPSPS allele with an Asp-213-Asn(D213N)mutation(OsEPSPS-D213N) in the predicted glyphosate-binding domain, which conferred rice plants reliable glyphosate tolerance and had not been reported or applied in rice breeding. Collectively, we developed a novel dual base editor which will be valuable for artificial evolution of important genes in crops. And the novel glyphosate-tolerant rice germplasm generated in this study will benefit weeds management in rice paddy fields. | Chen Zhang Xue Zhong Shaoya Li Lei Yan Jingying Li Yubing He Yong Lin Yangjun Zhang Lanqin Xia | 2023 | Journal of Integrative Plant Biology2023，65，9： | 1 |
| 3 | Elucidate long-term changes of ozone in Shanghai based on an integrated machine learning method显示文摘Surface ozone(O_(3))is influenced by regional background and local photochemical formation under favorable meteorological conditions.Understanding the contribution of these factors to changes in O_(3)is crucial to address the issue of O_(3)pollution.In this study,we propose a novel integrated method that combines random forest,principal component analysis,and Shapley additive explanations to distinguish observed O_(3)into meteorologically affected ozone(O_(3_MET)),chemically formed from local emissions(O_(3_LC)),and regional background ozone(O_(3_RBG)).Applied to three typical stations in Shanghai during the warm season from 2013 to 2021,the results indicate that O_(3_RBG)in Shanghai was 48.8±0.3 ppb,accounting for 79.6%–89.4%at different sites,with an overall declining trend of 0.018 ppb/yr.O_(3_LC)at urban and regional sites ranged from 5.9–9.0 ppb and 8.9–14.6 ppb,respectively,which were significantly higher than the contributions of 2.5–7.4 ppb at an upwind background site.O_(3_MET)can be categorized into those affecting O_(3)photochemical generation and those changing O_(3)dispersion conditions,with absolute contributions to O_(3)ranging from 13.4–19.0 ppb and 13.1–13.7 ppb,respectively.We found that the O_(3)rebound in 2017,compared to 2013,was primarily influenced by unfavorable O_(3)dispersion conditions and unbalanced emission reductions;while the O_(3)decline in 2021,compared to 2017,was primarily influenced by overall favorable meteorological conditions and further emissions reduction.These findings highlight the challenge of understanding O_(3)change due to meteorology and regional background,emphasizing the need for systematic interpretation of the different components of O_(3). | Jin Xue Fangting Wang Kun Zhang Hehe Zhai Dan Jin Yusen Duan Elly Yaluk Yangjun Wang Ling Huang Yuewu Li Thomas Lei Qingyan Fu Joshua S.Fu Li Li | 2023 | Frontiers of Environmental Science & Engineering2023，17，11： | 0 |
| 4 | 离子在等离子体中的电荷态分布与尾场调制效应研究显示文摘Plasma,called the fourth form of matter,not only plays an important role in astrophysics,but also becomes the new interest in atomic physics,material science and other aspects.Ion beam–plasma interaction can be a new solution to understand the plasma properties.For instance the collision of ion and free electrons dominate in plasma,which can induce the higher energy loss and the change of charge state,as well as the wake-field can modify the ion beam from a continues mode to a pulsed mode with a focused/unfocused spot. | Cheng Rui Wang Yuyu Zhou Xianming Lei Yu Chen Yanhong Zhao Yongtao He Bin Wu Dong Ying Yangjun Ren Jieru Gao Fei Hu Zhanghu Ma Xinwen Xiao Guoqing | 2018 | IMP & HIRFL Annual Report2018，，1： | 0 |
| 5 | Engineering a plant A-to-K base editor with improved performance by fusion with a transactivation module显示文摘Dear Editor,Base editors(BEs)are promising tools that enable single-nucleotide substitutions in specific target genes,generating loss-offunction or gain-of-function mutations,which can greatly accelerate plant functional genomics and crop improvement(Ren et al.,2018;Zeng et al.,2020;Xu et al.,2021;Yan et al.,2021;Li et al.,2023).To date,three major classes of BEs have been engineered:cytosine BEs(CBEs)for C-to-T transitions(Komor et al.,2016),adenine BEs(ABEs)for A-to-G transitions(Gaudelli et al.,2017). | Yucai Li Shaoya Li Chenfei Li Chen Zhang Lei Yan Jingying Li Yubing He Yan Guo Yong Lin Yangjun Zhang Lanqin Xia | 2023 | Plant Communications2023，4，6： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员