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| 1 | Sphericities of non-spherical objects显示文摘Sphericity, as one of the most important shape parameter for non-spherical objects, is extensively applied in evaluating the porosity or packing density of particles. In this paper, the sphericities of common non- spherical objects are deduced and investigated. Maximum sphericities and optimum shapes of these objects are presented as well. A decreasing order of sphericity from sphere (1.0) to regular tetrahedron (0.671) for objects with constant sphericity is given. Similar trends are found in most sphericity-aspect ratio relationships, which exhibit single peak and the sphericity increases with the growth of aspect ratio before the peak point and decreases afterward. The peak loci of aspect ratio are all around 1.0 which makes the shape approaching to a sphere. The information in the paper could be useful as literature for general application. | Teng Li Shuixiang Li Jian Zhao Peng Lu Lingyi Meng | 2012 | Particuology2012，10，1： | 4 |
| 2 | Packing properties of binary mixtures in disordered sphere systems显示文摘Mixtures of binary spheres are numerically simulated using a relaxation algorithm to investigate the effects of volume fraction and size ratio.A complete profile of the packing properties of binary spheres is given.The density curve with respect to the volume fraction has a triangular shape with a peak at 70%large spheres.The density of the mixture increases with the size ratio,but the growth becomes slow in the case of a large size disparity.The volume fraction and size ratio effects are reflected in the height and movement,respectively,of specific peaks in the radial distribution functions.The structure of the mixture is further analyzed in terms of contact types,and the mean coordination number is demonstrated to be primarily affected by 'large-small' contacts.A novel method for estimating the average relative excluded volume for binary spheres by weighting the percentages of contact types is proposed and extended to polydisperse packings of certain size distributions.The method can be applied to explain the density trends of polydisperse mixtures in disordered sphere systems. | Lingyi Meng Peng Lu Shuixiang Li | 2014 | Particuology2014，12，5： | 3 |
| 3 | Overexpression of Hdac6 enhances resistance to virus infection in embryonic stem cells and in mice显示文摘亲爱的编辑, | Dekun Wang Qingwen Meng Lihong Huo Meng Yang Lingling Wang Xinyu Chen JianchaoWang Zhiguo Li Xiaoying Ye Na Liu Qiuyan Li Zhen Dai Hongsheng Ouyang Ning Li Jun Zhou Lingyi Chen Lin Liu | 2015 | Protein & Cell2015，6，2： | 3 |
| 4 | The occurrence of per-and polyfluoroalkyl substances(PFASs) in fluoropolymer raw materials and products made in China显示文摘Perfluorooctanoic acid(PFOA), its salts, and related compounds were listed as new persistent organic pollutants by the Stockholm Convention in 2019.In this study, the occurrence of residues of PFOA and other per-and polyfluoroalkyl substances(PFASs) in raw materials and fluoropolymer products from the Chinese fluoropolymer industries are reported for the first time.The PFOA concentrations in raw materials and fluoropolymer products were in the range of 6.7 to 1.1 × 10^(6) ng/g, and | Lingyi Meng Boyu Song Yao Lu Kun Lv Wei Gao Yawei Wang Guibin Jiang | 2021 | Journal of Environmental Sciences2021，33，9： | 2 |
| 5 | A computational investigation on random packings of sphere-spherocylinder mixtures显示文摘Random packings of binary mixtures of spheres and spherocylinders with the same volume and the same diameter were simulated by a sphere assembly model and relaxation algorithm. Simulation results show that, independently of the component volume fraction, the mixture packing density increases and then decreases with the growth of the aspect ratio of spherocylinders, and the packing density reaches its maximum at the aspect ratio of 0.35. With the same volume particles, results show that the dependence of the mixture packing density on the volume fraction of spherocylinders is approximately linear. With the same diameter particles, the relationship between the mixture packing density and component volume fraction is also roughly linear for short spherocylinders, but when the aspect ratio of spherocylinders is greater than 1.6, the curves turn convex which means the packing of the mixture can be denser than either the sphere or spherocylinder packing alone. To validate the sphere assembly model and relaxation algorithm, binary mixtures of spheres and random packings of spherocylinders were also simulated. Simulation results show the packing densities of sphere mixtures agree with previous prediction models and the results of spherocylinders correspond with the simulation results in literature. | LU Peng, LI ShuiXiang , ZHAO Jian & MENG LingYi State Key Laboratory for Turbulence and Complex Systems, Department of Mechanics & Aerospace Engineering, College of Engineering, Peking University, Beijing 100871, China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，12： | 2 |
| 6 | Disordered packing density of binary and polydisperse mixtures of curved spherocylinders显示文摘 | Lingyi Meng Shuixiang Li | 2017 | Particuology2017，15，3： | 1 |
| 7 | Effect of the interaction between carrageenan,gellan gum and flaxseed gum on quality attibutes of starch-free emulsion-type sausage显示文摘 | Weiwei Zhou Lingyi Meng Xingming Li | 2010 | J Muscle Food2010，21，2： | 1 |
| 8 | Phosphonium-Based Ionic Thermally Activated Delayed Fluorescence Emitters for High-Performance Partially Solution-Processed Organic Light-Emitting Diodes显示文摘Ionic thermally activated delayed fluorescence(TADF)emitters are rarely investigated due to their poor photoluminescence and electroluminescence performance.Herein,highly efficient ionic TADF emitters with charged donor–acceptor(D–A^(+))and D–A^(+)–D architectures are designed,innovatively based on the phosphonium cation electron acceptor.The symmetric D–A^(+)–D compound in doped film exhibits a high photoluminescence quantum yield of 0.91 and a short emission lifetime of 1.43 microseconds.Partially solution-processed organic lightemitting diodes based on these ionic TADF emitters achieve a maximum external quantum efficiency(EQE)of 18.3%and a peak luminance of 14,532 candelas per square meter(cd/m^(2))and show a small efficiency roll-off of 7.1%(EQE=17%)at a practical high luminance of 1000 cd/m^(2).These results demonstrate the high potential of phosphonium cations as promising electron acceptors to construct TADF emitters for high-performance electroluminescence devices.The current study opens up an appealing way for future exploitation of high-efficiency ionic TADF materials. | Xu-Lin Chen Xiao-Dong Tao Ya-Shu Wang Zhuangzhuang Wei Lingyi Meng Dong-Hai Zhang Fu-Lin Lin Can-Zhong Lu | 2023 | CCS Chemistry2023，5，3： | 0 |
| 9 | Influence of microplastics on the photodegradation of perfluorooctane sulfonamide (FOSA)显示文摘PFAS(per-and polyfluoroalkyl substances)are omnipresent in the environment and their transportation and transformation have attracted increased attention.Microplastics are another potential risk substances that can serve as a carrier for ubiquitous pollutants,thus affecting the presence of PFAS in the environment.In this study,the adsorption of perfluorooctane sulfonamide(FOSA)and perfluorooctanoic acid(PFOA)on four microplastics(PE,PVC,PS,and PTFE)and their effect on the photodegradation of FOSA were studied.The adsorption capacity of FOSA by PS was the highest,in similar,PS displayed the highest adsorption capacity in the presence of PFOA.Different effects of pH and salinity on the adsorption of FOSA and PFOA were observed among different microplastics indicating inconsistent interaction mechanisms.Furthermore,FOSA could be photodegraded,with PFOA as the main product,while the presence of microplastics had a negligible effect on the degradation of this contaminant.The results indicated that microplastics could act as PFAS concentrators.Moreover,their photochemical inertiasmake the pollutants enriched onmicroplastics more resistant to degradation. | Lingyi Meng Haoting Tian Jitao Lv YaweiWang Guibin Jiang | 2023 | Journal of Environmental Sciences2023，，5： | 0 |
| 10 | Migration mechanism and risk assessment of perand polyfluoroalkyl substances in the Ya'Er Lake oxidation pond area,China显示文摘The migration mechanisms,sources,and environmental risks of 29 legacy and emerging perfluorinated and polyfluoroalkyl species present in an oxidation pond(Ya'Er Lake)were investigated for treating sewage based on the analysis of their occurrence and distribution.The concentration of per-and polyfluoroalkyl substances(PFAS)in pond area was between0.30 and 63.2 ng/g dw(dry weight),with the overall average concentration of 8.00 ng/g dw.Notably,the PFAS concentrations in the surface sediments near the sewage outlet in Pond-1(50.2 ng/g dw)and Pond-5(average 15.1 ng/g dw)were 1–2 orders of magnitude higher than those in other areas.In general,the legacy PFAS,i.e.,perfluorooctane sulfonic acid was considered to be the major pollutant in the polluted area,on average,accounting for 73.0%of the total concentration of PFAS pollutants.By evaluating the regional distribution of different PFAS homologs,the short-chain PFAS pollutants with lower K_(ow)were found to migrate farther in both horizontal and vertical directions.The sewage outlets in Pond-1 and Pond-5are the main pollution sources in polluted area and the emerging PFAS pollutants in Pond-5have replaced the legacy PFAS pollutants as the main pollutants.Based on positive matrix factorization analysis,three main industrial sources of PFAS pollutants in the study area were identified:protective coating,fire-fighting,and food packaging sources.Moreover,the environmental risk assessment results showed that most study areas exhibited medium environmental risk(0.01≤Risk quotient(RQ)<1),indicating that the ecological environment risks in this area need further attention. | Chang Li Huifang Zhong Jing Wu Lingyi Meng Yingjun Wang Chunyang Liao Yawei Wang Yujian He | 2024 | Journal of Environmental Sciences2024，，2： | 0 |
| 11 | Deciphering the potassium storage phase conversion mechanism of phosphorus by combined solid-state NMR spectroscopy and density functional theory calculations显示文摘Phosphorus is the potential anode material for emerging potassium-ion batteries(PIBs)owing to the highest specific capacity and relatively low operation plateau.However,the reversible delivered capacities of phosphorus-based anodes,in reality,are far from the theoretical capacity corresponding to the formation of K3P alloy.And,their underlying potassium storage mechanisms remain poorly understood.To address this issue,for the first time,we perform high-resolution solid-state31P NMR combined with XRD measurements,and density functional theory calculations to yield a systemic quantitative understanding of(de)potassiation reaction mechanism of phosphorus anode.We explicitly reveal a previously unknown asymmetrical nanocrystalline-to-amorphous transition process via rP←→(K_(3)P_(11),K_(3)P_(7),beta-K_(4)P_(6))←→(alpha-K4P6)←→(K_(1-x)P,KP,K_(4-x)P3,K_(1+x)P)←→(amorphous K4P3,amorphous K3P)that are proceed along with the electrochemical potassiation/depotassiation processes.Additionally,the corresponding KP alloys intermediates,such as the amorphous phases of K_(4)P_(3),K_(3)P,and the nonstoichiometric phases of“K_(1-x)P”,“K_(1+x)P”,“K_(4-x)P_(3)”are experimentally detected,which indicating various complicated K-P alloy species are coexisted and evolved with the sluggish electrochemical reaction kinetics,resulting in lower capacity of phosphorus-based anodes.Our findings offer some insights into the specific multi-phase evolution mechanism of alloying anodes that may be generally involved in conversion-type electrode materials for PIBs. | Huixin Chen Lingyi Meng Hongjun Yue Chengxin Peng Qiaobao Zhang Guiming Zhong Ding Chen | 2023 | Journal of Energy Chemistry2023，，4： | 0 |
| 12 | Optical fluence compensation for handheld photoacoustic probe:An in vivo human study case显示文摘Integrating photoacoustic(PA)and ultrasound(US)into a handheld probe to perform P A/US dual-modal imaging has been widely studied over the past few years.However,optical fuence decreases quickly in deeper tissue due to light scattering and absorption,which would signifi-cantly affect the quantitative PA imaging.In this paper,we performed a fluence compensation for a PA imaging study of human breast.The comparison of P A/US image with and without optical fuence compensation demonstrated that the fuence compensation could effectively improve imaging quality for handheld probe. | Lingyi Zhao Meng Yang Yuxin Jiang Changhui Li | 2017 | Journal of Innovative Optical Health Sciences2017，，4： | 0 |
| 13 | A smart post-synthetic route towards[Fe_(2)Co_(2)]molecular capsules with electron transfer and bidirectional switching behaviors显示文摘Aldehyde groups were intentionally equipped on the cyanide-bridged[Fe_(2)Co_(2)]square molecules:{[(Tp*)Fe(CN)_(3)Co(bpy^(CHO))_(2)]_(2)-[PF_(6)]_(2)}·4MeOH(1,Tp*=hydrotris(3,5-dimethylpyrazol-1-yl)borate;bpy^(CHO)=4-formyl-4′-methyl-2,2′-bipyridine),thus providing chemical-active windows for post-modification towards desired functions.In this contribution,by taking advantage of efficient Schiff-base condensation between the aldehyde-substituted bipyridine derivative(bpyCHO)and alkyl diamines(H_(2)N-(CH_(2))_(n)NH_(2)),two discrete[Fe_(2)Co_(2)]compounds{[(Tp∗)Fe(CN)_(3)Co(bpy^(C=N(CH_(2))_(n)N=C)bpy)]2[PF_(6)]_(2)}⋅6DMF(2,n=5;3,n=7)were prepared,where the cyanide-bridged[Fe_(2)Co_(2)]square cores were encapsulated by the flexible alkyl chains.Variable-temperature single-crystal X-ray diffraction and magnetic studies revealed complete thermo(T_(1/2)=233 K(2)and 237 K(3))and photo-induced electron transfer event accompanying spin transition between the diamagnetic[Fe^(Ⅱ)_(LS2)Co^(Ⅲ)_(LS2)]state and the paramagnetic[Fe^(Ⅲ)_(LS2)Co^(Ⅱ)_(HS2)]state(LS,low spin;HS,high spin).In addition,the bidirectional switching between the two states was achieved with alternating laser irradiation at 808 and 532 nm at 10 K. | Lingyi Meng Yi-Fei Deng Shihao Liu Zhiping Zheng Yuan-Zhu Zhang | 2021 | Science China Chemistry2021，64，8： | 0 |
| 14 | Two-dimensional densely ordered packings of non-convex bending and assembled rods显示文摘The investigation of the problem of particle packing has provided basic insights into the structure,symmetry,and physical properties of condensed matter.Dense packings of non-spherical particles have many applications,both in research and industry.We report the two-dimensional dense packing patterns of bending and assembled rods,which are non-convexly deformed from simple objects and modeled as entangled particles.Monte Carlo simulations and further analytical constructions are carried out to explore possible densely packed structures.Two typical densely packed structures of C-bending rods are found,and their packing densities are identified as being functions of the aspect ratio and central angle.Six shapes of assembled rods,representing the combined deformations of rods,are employed in simulations with the packing structures classified into three types.The dense packing density of each packing pattern is derived as a function of different shape parameters.In contrast with the case of disordered packings,both the shape and order are verified to affect the packing density. | Lingyi Meng Xiaohu Yao Xiaoqing Zhang | 2020 | Particuology2020，18，3： | 0 |
| 15 | Secondary Metal Coordination Using a Tetranuclear Complex as Ligand Leading to Hexanuclear Complexes with Enhanced Thermal Barriers for Electron Transfer显示文摘Postsynthesis of the paramagnetic square-shaped complex{[(Tp*Me)Fe(μ-CN)_(2)(CN)][Co(dmbpy)_(2)]}_(2)(BPh_(4))_(2)·6MeCN·H2O[1,Tp*Me=tris(3,4,5-trimethylpyrazole)-borate;dmbpy=4,4′-dimethyl-2,2′-bipyridine)]by grafting transition metal(II)thiocyanates via its terminal cyano groups afforded three hexanuclear[Fe_(2)Co_(2)M_(2)]clusters(M=Zn,2;Co,3;Cd,4).The peripheral metal-complex units serving as excellent electron acceptors were found to help stabilize the low-temperature state of Fe^(II,LS)–Co^(III,LS) within the complex core. | Shihao Liu Yi-Fei Deng Zi-Yi Chen Lingyi Meng Xiaoyong Chang Zhiping Zheng Yuan-Zhu Zhang | 2021 | CCS Chemistry2021，3，9： | 0 |
| 16 | Multidisciplinary team for the diagnosis and treatment of 2cases of primary intestinal yolk sac tumor显示文摘Extragonadal primary yolk sac tumor of the intestinal tract origin is exceedingly rare. Through a multiple disciplinary team, the diagnosis and treatment of primary intestinal yolk sac tumor were further defined. We report 2 such cases with detailed histologic and immunohistochemical analysis. The two patients were a 7-year-old girl and a 29-year-old woman. Both of them preoperatively had an elevated serum alpha fetoprotein(AFP) level(≥ 1,210 ng/mL). The tumors are located in the intestine and imaging examination indicated the rectum as the primary site. Grossly the mass was grey-white and crisp texture. Microscopic examination featured reticular, microcystic, macrocystic, papillary, solid, and some glandular patterns. Immunohistochemically,tumor cells of both cases were positive for SALL4, AFP, pan-cytokeratin(AE1/AE3), and glypican-3. Simultaneously, a stain for EMA, OCT4, CD30, HCG, vimentin and CK20 were negative in all 2 neoplasms. The features of morphology,immunohistochemistry, laboratory examinations and imaging studies consist of the diagnosis of primary yolk sac tumor of the intestine. | Qiujuan Huang Changxu Liu Ruijun Tang Jie Li Wei Li Lei Zhu Yuhong Guo Lin Zhang Tongyuan Qu Lingyi Yang Lingmei Li Yalei Wang Baocun Sun Bin Meng Jie Yan Wengui Xu Huilai Zhang Dengfeng Cao Wenfeng Cao | 2018 | Cancer Biology & Medicine2018，15，4： | 0 |
| 17 | Effects of charge distribution on water filling process in carbon nanotube显示文摘Using umbrella sampling technique with molecular dynamics simulation,we investigated the nanoflu-idic transport of water in carbon nanotube(CNT).The simulations showed that a positive charge modi-fication to the carbon nanotube can slow down the water column growth process,while the negative charge modification to the carbon nanotube will,on the other hand,quicken the water column growth process.The free energy curves were obtained through the statistical process of water column growth under different charge distributions,and the results indicated that these free energy curves can be employed to explain the dynamical process of water column growth in the nanosized channels. | MENG LingYi LI QiKai SHUAI ZhiGang | 2009 | Science China Chemistry2009，52，2： | 0 |
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