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| 1 | A New Species of the Gekko japonicus Group(Squamata:Gekkonidae)from Southwest China显示文摘A new species of the Gekko(Squa ma ta:Gekkonidae)is described from the border of Sichuan and Yunnan Province,southwest China,based on distinct morphological and molecular features.Gekko jinjiangensis sp.nov.is distinguished from congeners by a combination of the following characters:size small(SVL 50.2–61.6 mm,n=13);nares in contact with rostral;interorbital scales between anterior corners of the eyes 20–24;ventral scales between mental and cloacal slit 146–169;midbody scale rows 111–149;ventral scale rows 31–47;subdigital lamellae on first toe 8–11,on fourth toe 11–15;no webbing in the fingers and toes;with tubercles on uapper surface of fore and hind limbs;precloacal pores 4–5 in males;postcloacal unilateral tubercles 1–2;dorsal surface of body with 8–9 large greyish brown markings between nape and sacrum.In molecular analyses,the new species is sister to G.scabridus,but separated from them by approximately 9.9%–12.2%in genetic divergence as shown by a fragment of the partial mitochondrial ND2 gene.The new species is the highest Gekko with elevation range from 2000 to 2476 m.Further surveys are recommended to better understand the occurrence and population status of the new species. | Yinmeng HOU Shengchao SHI Gang WANG Guocheng SHU Puyang ZHENG Yin QI Gaohui LIU Jianping JIANG Feng XIE | 2021 | Asian Herpetological Research2021，12，1： | 1 |
| 2 | Unraveling the degradation mechanism of LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2) at the high cut-off voltage for lithium ion batteries显示文摘LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811)layered oxides have been regarded as promising alternative cathodes for the next generation of high-energy lithium ion batteries(LIBs)due to high discharge capacities and energy densities at high operation voltage.However,the capacity fading under high operation voltage still restricts the practical application.Herein,the capacity degradation mechanism of NCM811 at atomic-scale is studied in detail under various cut-off voltages using aberration-corrected scanning transmission electron microscopy(STEM).It is observed that the crystal structure of NCM811 evolution from a layered structure to a rock-salt phase is directly accompanied by serious intergranular cracks under 4.9 V,which is distinguished from the generally accepted structure evolution of layered,disordered layered,defect rock salt and rock salt phases,also observed under 4.3 and 4.7 V.The electron energy loss spectroscopy analysis also confirms the reduction of Ni and Co from the surface to the bulk,not the previously reported only Li/Ni interlayer mixing.The degradation mechanism of NCM811 at a high cut-off voltage of4.9 V is attributed to the formation of intergranular cracks induced by defects,the direct formation of the rock salt phase,and the accompanied reduction of Ni^(2+)and Co^(2+)phases from the surface to the bulk. | Liming Wang Qingmei Su Bin Han Weihao Shi Gaohui Du Yunting Wang Huayv Li Lin Gu Wenqi Zhao Shukai Ding Miao Zhang Yongzhen Yang Bingshe Xu | 2023 | Journal of Energy Chemistry2023，，2： | 1 |
| 3 | Dissecting peri-implantation development using cultured human embryos and embryo-like assembloids显示文摘Studies of cultured embryos have provided insights into human peri-implantation development.However,detailed knowledge of peri-implantation lineage development as well as underlying mechanisms remains obscure.Using 3D-cultured human embryos,herein we report a complete cell atlas of the early post-implantation lineages and decipher cellular composition and gene signatures of the epiblast and hypoblast derivatives.In addition,we develop an embryo-like assembloid(E-assembloid)by assembling naive hESCs and extraembryonic cells.Using human embryos and E-assembloids,we reveal that WNT,BMP and Nodal signaling pathways synergistically,but functionally differently,orchestrate human peri-implantation lineage development.Specially,we dissect mechanisms underlying extraembryonic mesoderm and extraembryonic endoderm specifications.Finally,an improved E-assembloid is developed to recapitulate the epiblast and hypoblast development and tissue architectures in the pregastrulation human embryo.Our findings provide insights into human peri-implantation development,and the E-assembloid offers a useful model to disentangle cellular behaviors and signaling interactions that drive human embryogenesis. | Zongyong Ai Baohua Niu Yu Yin Lifeng Xiang Gaohui Shi Kui Duan Sile Wang Yingjie Hu Chi Zhang Chengting Zhang Lujuan Rong Ruize Kong Tingwei Chen Yixin Guo Wanlu Liu Nan Li Shumei Zhao Xiaoqing Zhu Xuancheng Mai Yonggang Li Ze Wu Yi Zheng Jianping Fu Weizhi Ji Tianqing Li | 2023 | Cell Research2023，33，9： | 0 |
| 4 | Mg/Fe site-specific dual-doping to boost the performance of cobalt-free nickle-rich layered oxide cathode for high-energy lithium-ion batteries显示文摘Layer-type LiNi0.9Mn0.1O2is promising to be the primary cathode material for lithium-ion batteries(LIBs)due to its excellent electrochemical performance.Unfortunately,the cathode with high nickel content suffers from severely detrimental structural transformation that causes rapid capacity attenuation.Herein,site-specific dual-doping with Fe and Mg ions is proposed to enhance the structural stability of LiNi0.9Mn0.1O2.The Fe3+dopants are inserted into transition metal sites(3b)and can favorably provide additional redox potential to compensate for charge and enhance the reversibility of anionic redox.The Mg ions are doped into the Li sites(3a)and serve as O_(2)^(-)-Mg^(2+)-O_(2)^(-)pillar to reinforce the electrostatic cohesion between the two adjacent transition-metal layers,which further suppress the cracking and the generation of harmful phase transitions,ultimately improving the cyclability.The theoretical calculations,including Bader charge and crystal orbital Hamilton populations(COHP)analyses,confirm that the doped Fe and Mg can form stable bonds with oxygen and the electrostatic repulsion of O_(2)^(-)-O_(2)^(-)can be effectively suppressed,which effectively mitigates oxygen anion loss at the high delithiation state.This dual-site doping strategy offers new avenues for understanding and regulating the crystalline oxygen redox and demonstrates significant potential for designing high-performance cobalt-free nickel-rich cathodes. | Yunting Wang Gaohui Du Di Han Wenhao Shi Jiahao Deng Huayu Li Wenqi Zhao Shukai Ding Qingmei Su Bingshe Xu | 2024 | Journal of Energy Chemistry2024，91，4： | 0 |
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