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| 1 | Elevated temperature sliding wear behavior of WCP-reinforced ferrous matrix composites显示文摘 | Song Yanpei Yu Hua He Junguang | | 0,,22: | 1 |
| 2 | Effects of the rotating speed of centrifugal machine on the gradient structure and properties of heavy cross-sectional WCP/Fe-C composites显示文摘 | Song Yanpei Mao Xiemin Dong Qiming | | 0,,: | 1 |
| 3 | Effects of microstructures on the abrasive wear behaviour of spheroidal cast iron 显示文摘 | Luo Quanshuo Xie Jingpei Song Yanpei | 1995 | Wear1995,184,2: | 1 |
| 4 | Effect of microstructures on the abrasive wear behaviour of spheroidal 显示文摘 | Luo Quanshun Xie Jingpei Song Yanpei | 1995 | Wear1995,184,: | 1 |
| 5 | Tandem synthesis of tertiary amines using graphene encapsulated Ni nocatalyst via nitro compounds hydrogenation and primary amine methylation显示文摘Development of the economic, environmentally friendly synthesis of amines from nitro compounds remains important and challenging. In this work, the graphene shell encapsulated none noble Ni-based catalysts were successfully designed and synthesized via an environmentally friendly method using H2O or Et OH as solvent. These fresh and recycling catalysts were characterized by X-ray diffraction and X-ray photoelectron spectroscopy. For the nitro compounds hydrogenation, Ni@C-600-H2O exhibits the best catalytic activity to achieve 100 mol/mol conversions of nitrobenzene and 99% selectivity of aniline under mild reaction conditions of 1.0 MPa H2and 60°C.Many halogen-substituted, olefin substituted nitro compounds and aliphatic nitro compounds were investigated and desired products were obtained in excellent selectivity. What is more, the catalyst had excellent stability and could be recycled 13 times without any significant loss in selectivity and activity. Furthermore, we also reported the methodology for tertiary amines synthesis using Ni-based catalyst via one-pot, cost-effective tandem combination reaction with nitrobenzene hydrogenation and amines N-methylation. | Jianguo Liu Yanpei Song Huanli Wang Longlong Ma | 2022 | Green Chemical Engineering2022,3,1: | 0 |
| 6 | Electrochemical Ring Expansion to Synthesize Medium-Sized Lactams Through C–C Bond Cleavage显示文摘Medium-sized nitrogen heterocycles are prevalent motifs in many kinds of bioactive molecules and natural products.Owing to the unfavorable enthalpic and entropic barriers during the transition states,access to medium-sized rings is challenging.Herein,a general and practical electrochemical ringexpansion protocol has been developed from commercially available benzocyclic ketones and amides.In this regard,a series of highly functionalized eightto eleven-membered lactams could be successfully accessed in high yields and efficiencies. | Kun Liu Chunlan Song Xu Jiang Xin Dong Yuqi Deng Wenxu Song Yanpei Yang Aiwen Lei | 2021 | CCS Chemistry2021,3,8: | 0 |
| 7 | Damping Property of Supersaturated ZnA127Ce Alloy during Natural Aging显示文摘The microstructures and damping property of supersaturated ZnA127Ce alloy during natural aging have been investigated. H-800 TEM was mainly used to research the microstructures. The relationship between microstructure and damping property was primarily studied. The results showed that solution plus natural aging was the best heat treatment, which could improve the damping property. Both continuous precipitation and cellular reaction occurred during the aging. Continuous precipitation follows the sequence: β→spherical GP zones→elliptical GP zones→intermediate phase R→n. The cellular reaction can be written as follows:β→a+n+ε. | Jingpei XIE Yaomin ZHU Yanpei SONG Xiaoying WANG and Quande CHEN Dept.of Material Engineering , Luoyang Institute of Technology, Luoyang 471039. China | 2001 | Journal of Materials Science & Technology2001,17,1: | 0 |
| 8 | Maize cryptochromes 1a1 and 1a2 promote seedling photomorphogenesis and shade resistance in Zea mays and Arabidopsis显示文摘Maize growth and development are regulated by light quality,intensity and photoperiod.Cryptochromes are blue/ultraviolet-A light receptors involved in stem elongation,shade avoidance,and photoperiodic flowering.To investigate the function of cryptochrome 1(CRY1) in maize,where it is encoded by Zm CRY1,we obtained two Zm CRY1a genes(Zm CRY1a1 and Zm CRY1a2),both of which share the highest similarity with other gramineous plants,in particular rice CRY1a by phylogenetic analysis.In Arabidopsis,overexpression of Zm CRY1a genes promoted seedling de-etiolation under blue and white light,resulting in dwarfing of mature plants.In seedlings of the maize inbred line Zong 31(Zm CRY1aOE),overexpression of Zm CRY1a genes caused a reduction in the mesocotyl and first leaf sheath lengths due to down-regulation of genes influencing cell elongation.In mature transgenic maize plants,plant height,ear height,and internode length decreased in response to overexpression of Zm CRY1a genes.Expression of Zm CRY1a were insensitive to low blue light(LBL)-induced shade avoidance syndrome(SAS) in Arabidopsis and maize.This prompted us to investigate the regulatory role of the gibberellin and auxin metabolic pathways in the response of Zm CRY1a genes to LBL treatment.We confirmed a link between Zm CRY1a expression and hormonal influence on the growth and development of maize under LBL-induced SAS.These results reveal that Zm CRY1a has a relatively conservative function in regulating maize photomorphogenesis and may guide new strategies for breeding high density-tolerant maize cultivars. | Xiaocong Fan Shizhan Chen Wenjing Wu Meifang Song Guanghua Sun Shuaitao Yao Weimin Zhan Lei Yan Hongdan Li Yanpei Zhang Lijian Wang Kang Zhang Liangliang Jiang Jianping Yang Qinghua Yang | 2023 | The Crop Journal2023,11,4: | 0 |