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| 1 | Whole-genome sequencing provides insights into the genetic diversity and domestication of bitter gourd(Momordica spp.)显示文摘Bitter gourd(Momordica charantia)is a popular cultivated vegetable in Asian and African countries.To reveal the characteristics of the genomic structure,evolutionary trajectory,and genetic basis underlying the domestication of bitter gourd,we performed whole-genome sequencing of the cultivar Dali-11 and the wild small-fruited line TR and resequencing of 187 bitter gourd germplasms from 16 countries.The major gene clusters(Bi clusters)for the biosynthesis of cucurbitane triterpenoids,which confer a bitter taste,are highly conserved in cucumber,melon,and watermelon.Comparative analysis among cucurbit genomes revealed that the Bi cluster involved in cucurbitane triterpenoid biosynthesis is absent in bitter gourd.Phylogenetic analysis revealed that the TR group,including 21 bitter gourd germplasms,may belong to a new species or subspecies independent from M.charantia.Furthermore,we found that the remaining 166 M.charantia germplasms are geographically differentiated,and we identified 710,412,and 290 candidate domestication genes in the South Asia,Southeast Asia,and China populations,respectively.This study provides new insights into bitter gourd genetic diversity and domestication and will facilitate the future genomics-enabled improvement of bitter gourd. | Junjie Cui Yan Yang Shaobo Luo Le Wang Rukui Huang Qingfang Wen Xiaoxia Han Nansheng Miao Jiaowen Cheng Ziji Liu Changyuan Zhang Chengcheng Feng Haisheng Zhu Jianwen Su Xinjian Wan Fang Hu Yu Niu Xiaoming Zheng Yulan Yang Dai Shan Zhensheng Dong Weiming He Narinder P.S.Dhillon Kailin Hu | 2020 | Horticulture Research2020，7，1： | 7 |
| 2 | Smooth second-order nonsingular terminal sliding mode control for reusable launch vehicles显示文摘Purpose–The purpose of this paper is to present a sliding mode attitude controller for reusable launch vehicle(RLV)which is nonlinear,coupling,and includes uncertain parameters and external disturbances.Design/methodology/approach–A smooth second-order nonsingular terminal sliding mode(NTSM)controller is proposed for RLV in reentry phase.First,a NTSM manifold is proposed for finite-time convergence.Then a smooth second sliding mode controller is designed to establish the sliding mode.An observer is utilized to estimate the lumped disturbance and the estimation result is used for feedforward compensation in the controller.Findings–It is mathematically proved that the proposed sliding mode technique makes the attitude tracking errors converge to zero in finite time and the convergence time is estimated.Simulations are made for RLV through the assumption that aerodynamic parameters and atmospheric density are perturbed.Simulation results demonstrate that the proposed control strategy is effective,leading to promising performance and robustness.Originality/value–By the proposed controller,the second-order sliding mode is established.The attitude tracking error converges to zero in a finite time.Meanwhile,the chattering is alleviated and a smooth control input is obtained. | Shaobo Ni Jiayuan Shan | 2014 | International Journal of Intelligent Computing and Cybernetics2014，7，1： | 1 |
| 3 | Transportation of AIE-visualized nanoliposomes is dominated by the protein corona显示文摘Liposomes, especially cationic liposomes, are the most common and well-investigated nanocarriers for biomedical applications, such as drug and gene delivery. Like other types of nanomaterials, once liposomes are incubated in a biological milieu, their surface can be immediately cloaked by biological components to form a protein corona, which confers a new ‘biological identity’ and modulates downstream interactions with cells. However, it remains unclear how the protein corona affects the transportation mechanism after liposomes interact with cells. Here, we employed home-made aggregation-induced-emission-visualized nanoliposomes TR4@Lipo as a model to investigate transportation with or without the protein corona by optical imaging techniques. The results show that the protein corona can change the cellular transportation mechanism of TR4@Lipo from energy-independent membrane fusion to energy-dependent endocytosis.The protein corona also modulates the intracellular distribution of loaded cargoes. This knowledge furthers our understanding of bio-nano interactions and is important for the efficient use of cationic liposomes. | Yi-Feng Wang Chunqiu Zhang Keni Yang Yufei Wang Shaobo Shan Yan Yan Kenneth A.Dawson Chen Wang Xing-Jie Liang | 2021 | National Science Review2021，8，6： | 1 |
| 4 | Revealing the atomic mechanism of diamond–iron interfacial reaction显示文摘Diamond,with ultrahigh hardness,high wear resistance,high thermal conductivity,and so forth,has attracted worldwide attention.However,researchers found emergent reactions at the interfaces between diamond and ferrous materials,which significantly affects the performance of diamond-based devices.Herein,combing experiments and theoretical calculations,taking diamond–iron(Fe)interface as a prototype,the counter-diffusion mechanism of Fe/carbon atoms has been established.Surprisingly,it is identified that Fe and diamond first form a coherent interface,and then Fe atoms diffuse into diamond and prefer the carbon vacancies sites.Meanwhile,the relaxed carbon atoms diffuse into the Fe lattice,forming Fe_(3)C.Moreover,graphite is observed at the Fe_(3)C surface when Fe_(3)C is over-saturated by carbon atoms.The present findings are expected to offer new insights into the atomic mechanism for diamondferrous material's interfacial reactions,benefiting diamond-based device applications. | Yalun Ku Kun Xu Longbin Yan Kuikui Zhang Dongsheng Song Xing Li Shunfang Li Shaobo Cheng Chongxin Shan | 2024 | Carbon Energy2024，6，3： | 0 |
| 5 | Revealing the dynamics of the alloying and segregation of Pt-Co nanoparticles via in-situ environmental transmission electron microscopy显示文摘Thermal treatment is a general and efficient way to synthesize intermetallic catalysts and may involve complicated physical processes.So far,the mechanisms leading to the size and composition heterogeneity,as well as the phase segregation behavior in Pt-Co nanoparticles(NPs)are still not well understood.Via in-situ environmental transmission electron microscopy,the formation dynamics and segregation behaviors of Pt-Co alloyed NPs during the thermal treatment were investigated.It is found that Pt-Co NPs on zeolitic imidazolate frameworks-67-derived nanocarbon(NC)are formed consecutively through both particle migration coalescence and the Ostwald ripening process.The existence of Pt NPs is found to affect the movement of Co NPs during their migration.With the help of theoretical calculations,the correlations between the composition and migration of the Pt and Co during the ripening process were uncovered.These complex alloying processes are revealed as key factors leading to the heterogeneity of the synthesized Pt-Co alloyed NPs.Under oxidation environment,the Pt-Co NPs become surface faceted gradually,which can be attributed to the oxygen facilitated relatively higher segregation rate of Co from the(111)surface.This work advances the fundamental understanding of design,synthesis,and durability of the Pt-based nanocatalysts. | Xing Li Shaobo Cheng Yanghua He Lixiang Qian Dmitri Zakharov Gang Wu Chongxin Shan Liang Zhang Dong Su | 2023 | Nano Research2023，16，2： | 0 |
| 6 | In Situ Electrochemical Transmission Electron Microscopy for Sodium-Ion Batteries显示文摘Sodium-ion batteries(SIBs)possess promising application prospects for large-scale energy storage systems due to the abundance of sodium ions as a resource and their low cost.Development of advanced SIBs requires a clear understanding of the structures and kinetic/dynamic processes occurring in the cells during the charging/discharging process.In situ transmission electron microscopy(TEM)is a powerful tool for direct visualization of the phase transitions as well as morphological and structural evolutions of the electrodes during the electrochemical reaction process.Herein,we summarize the state-of-the-art in situ TEM studies on SIBs with a specific focus on real-time observations of the electrochemical behavior of battery materials.This review emphasizes the necessity of in situ TEM to elucidate fundamental issues regarding the reaction mechanism,phase transformation,structural evolution,and performance degradation of SIBs.Finally,critical challenges and emerging opportunities for in situ TEM research about SIBs are discussed. | Shuge Dai Jingwen Zhang Jiaqi Qu Xing Li Shaobo Cheng Chongxin Shan | 2023 | Renewables2023，1，1： | 0 |
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