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| 1 | A first-principles investigation into the hydrogen bond interaction in β-HMX显示文摘A theoretical study of structural and electronic properties of β-HMX crystal is performed using density-functional theory(DFT). The total density of states(TDOS) is presented. The atomic orbit projected density of state(PDOS) from the p-type orbit of C,N,O and the s-type orbit of H is discussed. The study by analyzing the PDOS shows that the structure of β-HMX crystal possesses C-H···O intra- and inter-molecular hydrogen-bonding. There exists a hydrogen bonding between H5 -1s and O12 -2p orbits,between H19 -1s and O28 -2p orbits of intra molecules,and between H19 -1s and O24 -2p orbits of inter molecules. The Mulliken population analysis is also made. | CHEN Fang 1 ,ZHANG Hong 1,2,ZHAO Feng 3 ,MENG ChuanMin 3 & CHENG XinLu 1 1 Institute of Atomic and Molecular Physics,Sichuan University,Chengdu 610065,China 2 School of Physical Science and Technology,Sichuan University,Chengdu 610065,China 3 Laboratory for Shock Wave and Detonation Physics Research,Southwest Institute of Fluid Physics,China Academy of Engineering Physics,Mianyang 621900,China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，6： | 4 |
| 2 | Production of very-high-amylose cassava by post-transcriptional silencing of branching enzyme genes显示文摘High amylose starch can be produced by plants deficient in the function of branching enzymes(BEs).Here we report the production of transgenic cassava(Manihot esculenta Crantz)with starches containing up to 50%amylose due to the constitutive expression of hair-pin ds RNAs targeting the BE1 or BE2 genes.All BE1-RNAi plant lines(BE1i)and BE2-RNAi plant lines(BE2i)were grown up in the field,but with reduced total biomass production.Considerably high amylose content in the storage roots of BE2i plant lines was achieved.Storage starch granules of BE1i and BE2i plants had similar morphology as wild type(WT),however,the size of BE1i starch granules were bigger than that of WT.Comparisons of amylograms and thermograms of all three sources of storage starches revealed dramatic changes to the pasting properties and a higher melting temperature for BE2i starches.Glucan chain length distribution analysis showed a slight increase in chains of DP>36 in BE1i lines and a dramatic increase in glucan chains between DP 10-20 and DP>40 in BE2i lines.Furthermore,BE2i starches displayed a B-type X-ray diffraction pattern instead of the A-type pattern found in BE1i and WT starches.Therefore,cassava BE1 and BE2 function differently in storage root starch biosynthesis. | Wenzhi Zhou Shanshan Zhao Shutao He Qiuxiang Ma Xinlu Lu Xiaomeng Hao Hongxia Wang Jun Yang Peng Zhang | 2020 | Journal of Integrative Plant Biology2020，62，6： | 1 |
| 3 | Scavenging and anti-fatigue activity of fermented defatted soybean peptides 显示文摘 | Zhao Xinlu Xiao Meibie Feng Xialu | 2008 | European Food Research & Technology2008，226，3： | 1 |
| 4 | Innovative design and optimization of a two-dimensional deployable nine-grid planar antenna mechanism with a flat reflection surface显示文摘With the development of the aerospace industry,space missions are becoming more complicated and diversified,and there is a demand for antenna mechanisms with a larger physical aperture.In this paper,a planar deployable mechanism is proposed,which can form a flat reflection surface with a small gap between plates.To this end,a novel large-scale two-dimensional deployable nine-grid planar antenna mechanism is designed.First,two antenna folding schemes and four supporting mechanism schemes are proposed.Through comparison analysis,the antenna configuration scheme with the best comprehensive performance is selected.A kinematic model of the deployable mechanism is established,and its kinematic characteristics are analyzed.Then,the correctness of the kinematic model is verified by comparing the analytical and simulation results of the kinematic model.Subsequently,a finite element model of the antenna is developed.Based on the response surface method,the structural parameters of the support rods of the antenna are optimized,and a set of optimized solutions with lightweight and high fundamental frequency characteristics are obtained.Finally,a prototype of the proposed nine-grid planar antenna is fabricated.The feasibility of the deployment principle and the rationality of the designed mechanism are verified by deployment experiments. | Bo CHEN Ze JIANG Xinlu WEI Luyao GUO Xin ZHOU Yundou XU Junjie QIAN Yongsheng ZHAO | 2023 | Chinese Journal of Aeronautics2023，36，11： | 0 |
| 5 | Identification of Styryl Sulfonyl Fluoride as a Near-Perfect Michael Acceptor for Diversified Protein Bioconjugations显示文摘Cysteine(Cys)-specific bioconjugation has widespread applications in the synthesis of protein conjugates,particularly for the functionalization of antibodies.Here,we report the discovery of transstyryl sulfonyl fluoride(SSF)as a near-perfect Michael acceptor for Cys-specific protein bioconjugation.Compared to maleimides,which are predominantly used,SSF exhibited better chemoselectivity,selfstability,and conjugate stability while maintaining comparable reactivity.Using SSF-derived probes,proteins can be readily modified on the Cys residue(s)to install functionalities,for example,fluorescent dyes,toxins,and oligonucleotides,without influencing the activity.Further applications of SSF-derived serum-stable antibody-drug conjugates and PD-L1 nanobody-oligo conjugates demonstrate the great translational value of SSF-based bioconjugation in drug development and single-cell sequencing. | Qingsong Wu Qi Xue Ji Li Qinheng Zheng Xinlu Zhao Wannan Li Shiming Sun Wanxing Sha Yang Yang Yi Yang Jie P.Li | 2023 | CCS Chemistry2023，5，10： | 0 |
| 6 | Lattice instability of V_2AlC at high pressure显示文摘We investigate the elastic and thermodynamic properties of nanolaminate V2 AlC by using the ab initio pseudopotential total energy method. The axial compressibility shows that the c axis is always stiffer than a axis. The elastic constants revealed the structural instability at about 500 and 732 GPa. Furthermore, elastic constants C44 reached its maximum at about 550 GPa, differing with the other four C11 , C12 , C13 and C33 constants. The Poisson's ratio investigations demonstrated that a higher ionic or weaker covalent contribution in intra-atomic bonding and the degree of ionicity increases with pressure. The G/B and B/C44 investigations revealed that V2 AlC is brittle and the brittleness decreases with pressure. Also, we found that V2 AlC is elastic anisotropic materials and the degree of anisotropy rapidly rises with pressure. Study on Debye temperature and Grüneisen parameter observed weak temperature and strong pressure responses, whereas the sensitive dependence in the thermal expansion coefficient and Helmholtz free energy are clearly seen. | YANG ZeJin LIU Qiang LI Jin WANG Zhao GUO AiMin LINGHU RongFeng CHENG XinLu YANG XiangDong | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，5： | 0 |
| 7 | Sinistral strike slip of the Zhangjiakou-Penglai Fault and its control on hydrocarbon accumulation in the northeast of Shaleitian Bulge,Bohai Bay Basin,East China显示文摘The structural style, fault activity, strike-slip displacement, and the formation mechanism and hydrocarbon migration and accumulation in the center tectonic zone in the northeast Shaleitian Bulge of Zhangjiakou-Penglai Fault Zone were studied by seismic attribute analysis, structural geometric analysis, fault activity analysis, structure evolution history and simulation of hydrocarbon migration, based on 3-D seismic and drilling data. The main results are as follows:(1) The study area is a superimposed tectonic zone, which experienced early(Paleocene and Eocene) extension and late(Oligocene and Pliocene-Quaternary) strike-slip and pull-apart.(2) The sinistral strike slip of the northeast Shaleitian Bulge of Zhangjiakou-Penglai Fault Zone went through two periods, Oligocene and Pliocene-Quaternary, and the Bohai section was active earlier than the inland section.(3) The sinistral strike slip displacement of Zhangjiakou-Penglai Fault is 4 km since Cenozoic, including 1 km in the Oligocene, and 3 km in the Pliocene-Quaternary.(4) The strike-slip movements have resulted in the increase of fault activity and basin-mountain restructure in the fault zone, also contributed to the formation of the central tectonic belt and the conjugate evolution in north-east structural belt.(5) The conjugate strike slip of the Zhangjiakou-Penglai Fault Zone dominated the migration and accumulation of hydrocarbon in shallow formations by controlling the injection points and segments of hydrocarbon from the deep layers to shallow layers. | PENG Jingsong WEI Ajuan SUN Zhe CHEN Xinlu ZHAO Dijiang | 2018 | Petroleum Exploration and Development2018，45，2： | 0 |
| 8 | Two-dimensional molecular condensation in cell signaling and mechanosensing显示文摘Membraneless organelles(MLO)regulate diverse biological processes in a spatiotemporally controlled manner spanning from inside to outside of the cells.The plasma membrane(PM)at the cell surface serves as a central platform for forming multi-component signaling hubs that sense mechanical and chemical cues during physiological and pathological conditions.During signal transduction,the assembly and formation of membrane-bound MLO are dynamically tunable depending on the physicochemical properties of the surrounding environment and partitioning biomolecules.Biomechanical properties of MLO-associated membrane structures can control the microenvironment for biomolecular interactions and assembly.Lipid-protein complex interactions determine the catalytic region’s assembly pattern and assembly rate and,thereby,the amplitude of activities.In this review,we will focus on how cell surface microenvironments,including membrane curvature,surface topology and tension,lipid-phase separation,and adhesion force,guide the assembly of PM-associated MLO for cell signal transductions. | Xiangfu Guo Kexin Zhu Xinlu Zhu Wenting Zhao Yansong Miao | 2023 | Acta Biochimica et Biophysica Sinica2023，55，7： | 0 |
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