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| 1 | Effects of degradable films with different degradation cycles on soil temperature,moisture and maize yield显示文摘Photo biodegradable film is an ideal degradable mulch film with synergistic effect of photo-degradability and biodegradability.To examine the covering effects of different films,maize was cultivated in the field with three kinds of degradable films(DF)mulching which had different degradation cycles(DF No.1,No.2 and No.3),with common plastic film mulching and no filming mulching(open ground)as comparison.The degradation rates and degrees of degradable films were examined,and the effects of different films on soil temperature,soil moisture,maize yield and relevant characteristics in each treatment were analyzed.The results indicated that the degradable films had good degradability,and the weight loss rate in 100 d for DF No.1,No.2,and No.3 were 22.31%,19.46%,and 15.63%,which were 4.16,3.63,and 2.92 times of the plastic film,respectively.In the early period of maize growth,the degradable films had good warming effects on soil,which were similar with the plastic film.The effect of DF No.2 on soil water conservation was slightly better than that of DF No.1 or No.3,similar with that of the plastic film.The soil water contents in 0-140 cm depths were significantly higher for DF No.2 than that for the open ground(p<0.05).The degradable films could significantly promote the ear development of maize,improve the ear characteristics,shorten the bald tip,and increase kernel number per plant(KNP)and 1000-kernel weight(TKW).The grain yields(GYs)for DF No.2,No.1,and No.3 were significantly improved,with 35.15%,31.35%,and 30.07%higher than that the open ground respectively(p<0.05).With no significant difference between DF and the plastic film,the GY was increased more for DF No.2 than that for DF No.1 and No.3.The degradable films fulfilled successfully all the functions of the plastic film,thus they were recommended as viable option to the plastic film due to their good degradability. | Lixia Shen Yumeng Zhang Yinchao Lan Ruofan Li | 2019 | International Journal of Agricultural and Biological Engineering2019，12，3： | 4 |
| 2 | Electrospun Scaff old of Collagen and Polycaprolactone Containing ZnO Quantum Dots for Skin Wound Regeneration显示文摘Nanofibers(NFs)have been widely used in tissue engineering such as wound healing.In this work,the antibacterial ZnO quantum dots(ZnO QDs)have been incorporated into the biocompatible poly(ε-caprolactone)/collagen(PCL/Col)fibrous scaffolds for wound healing.The as-fabricated PCL-Col/ZnO fibrous scaffolds exhibited good swelling,antibacterial activity,and biodegradation behaviors,which were beneficial for the applications as a wound dressing.Moreover,the PCL-Col/ZnO fibrous scaffolds showed excellent cytocompatibility for promoting cell proliferation.The resultant PCL-Col/ZnO fibrous scaffolds containing vascular endothelial growth factor(VEGF)also exhibited promoted wound-healing effect through promoting expression of transforming growth factor-β(TGF-β)and the vascular factor(CD31)in tissues in the early stages of wound healing.This new electrospun fibrous scaffolds with wound-healing promotion and antibacterial property should be convenient for treating wound healing. | Pengfei Li Liming Ruan Ruofan Wang Tianqi Liu Gao Song Xiaofei Gao Guohua Jiang Xiaoyan Liu | 2021 | Journal of Bionic Engineering2021，18，6： | 2 |
| 3 | Influence of abnormal stress under a residual bearing coal pillar on the stability of a mine entry显示文摘Mine entries close to residual bearing coal pillars(RBCPs) will suffer large deformation that may cause rock burst. To better understand the deformation mechanism and develop safe and practical guidelines for entry design, most studies focus on the absolute size of the stress field in and around the pillar. In this paper, we present a new approach to analyze the abnormal stress field close to a RBCP that uses the stress concentration coefficient(SCC), stress gradient(SG), and coefficient of lateral pressure(CLP) to describe the stress state induced by the RBCP. Based on elastic theory and a mathematical model for the abutment stress in the RBCP, an analytical solution for the abnormal stress in the strata below the RBCP was derived and the characteristics of the abnormal stress for a case study of a coal mine in China were analyzed. The results show that the abnormal stress field around the pillar is characterized by four distinct zones: a zone of high SCC, high SG, and CLP less than 1, a zone of high SCC, low SG, and CLP less than 1, a zone of low SCC, SG close to 0, and CLP greater than 1, and a zone of SCC close to 1, SC close to 0, and CLP close to 1. Based on this zoning pattern, a numerical model was established to study the combined effects of the abnormal stress on the stability of the entry. The most stable zone was determined based on a model of the Xinrui coal mine and verified by field measurements at the mine. Our conclusions can be used as guidelines for designing safe entry layouts in similar geological and mining settings. | Kang Jizhong Shen Wenlong Bai Jianbiao Yan Shuai Wang Xiangyu Li Wenfeng Wang Ruofan | 2017 | International Journal of Mining Science and Technology2017，27，6： | 1 |
| 4 | A three-dimensional polycyclic aromatic hydrocarbon based covalent organic framework doped with iodine for electrical conduction显示文摘Covalent organic frameworks(COFs) are a class of crystalline porous organic materials with variable structures and fascinating properties. The intrinsic low conductivity impedes their widely application in optoelectronic. Iodine doping is an effective way to enhance the electrical conductivity of COFs. Here, a novel 3D imine COF with lvt topology is synthesized from two different pentacene derivatives with the same core in the form of structural complementarity. DDHP-COF is a highly crystalline material featuring high surface area of 1679 m^(2)/g and excellent thermal stability up to 490 ℃. Upon doping with iodine, the electrical conductivity can reach as high as 1.5×10^(-2)S/m which is significantly enhanced over 6 orders of magnitude compared with the pristine COF. | Ruofan Li Guolong Xing Hui Li Shen Li Long Chen | 2023 | Chinese Chemical Letters2023，34，4： | 0 |
| 5 | A metabolite from commensal Candida albicans enhances the bactericidal activity of macrophages and protects against sepsis显示文摘The gut microbiome is recognized as a key modulator of sepsis development.However,the contribution of the gut mycobiome to sepsis development is still not fully understood.Here,we demonstrated that the level of Candida albicans was markedly decreased in patients with bacterial sepsis,and the supernatant of Candida albicans culture significantly decreased the bacterial load and improved sepsis symptoms in both cecum ligation and puncture(CLP)-challenged mice and Escherichia coli-challenged pigs.Integrative metabolomics and the genetic engineering of fungi revealed that Candida albicans-derived phenylpyruvate(PPA)enhanced the bactericidal activity of macrophages and reduced organ damage during sepsis.Mechanistically,PPA directly binds to sirtuin 2(SIRT2)and increases reactive oxygen species(ROS)production for eventual bacterial clearance.Importantly,PPA enhanced the bacterial clearance capacity of macrophages in sepsis patients and was inversely correlated with the severity of sepsis in patients.Our findings highlight the crucial contribution of commensal fungi to bacterial disease modulation and expand our understanding of the host-mycobiome interaction during sepsis development. | Peng Gu Ruofan Liu Qin Yang Li Xie Rongjuan Wei Jiaxin Li Fengyi Mei Tao Chen Zhenhua Zeng Yan He Hongwei Zhou Hongjuan Peng Kutty Selva Nandakumar Huikuan Chu Yong Jiang Wei Gong Ye Chen Bernd Schnabl Peng Chen | 2023 | Cellular & Molecular Immunology2023，20，10： | 0 |
| 6 | For more and purer hydrogen-the progress and challenges in water gas shift reaction显示文摘The water gas shift(WGS) reaction is a standard reaction that is widely used in industrial hydrogen production and removal of carbon monoxide. The improved catalytic performance of WGS reaction also contributes to ammonia synthesis and other reactions. Advanced catalysts have been developed for both high and low-temperature reactions and are widely used in industry. In recent years, supported metal nanoparticle catalysts have been researched due to their high metal utilization. Low-temperature catalysts have shown promising results, including high selectivity, high shift rates, and higher activity potential. Additionally, significant progress has been made in removing trace CO through the redox reaction in electrolytic cell. This paper reviews the development of WGS reaction catalysts, including the reaction mechanism, catalyst design, and innovative research methods. The catalyst plays a crucial role in the WGS reaction, and this paper provides an instant of catalyst design under different conditions. The progress of catalysts is closely related to the development of advanced characterization techniques.Furthermore, modifying the catalyst surface to enhance activity and significantly increase reaction kinetics is a current research direction. This review goals to stimulate a better understanding of catalyst design, performance optimization, and driving mechanisms, leading to further progress in this field. | Limin Zhou Yanyan Liu Shuling Liu Huanhuan Zhang Xianli Wu Ruofan Shen Tao Liu Jie Gao Kang Sun Baojun Li Jianchun Jiang | 2023 | Journal of Energy Chemistry2023，，8： | 0 |
| 7 | A Catalytic Copper/Cobalt Oxide Interface for Efficient Hydrogen Generation显示文摘Metal nanoparticles and metal oxides promisingly provide different catalytic active sites at their interfaces.Constructing high-density interfaces is essential to maximize synergies.Herein,a Cu-Co_(3)O_(4) nanoparticles interfacial structure produced via pyrolysis and moderate oxidation from metal-organic frameworks has been designed to boost the intrinsic activity.The Cu-Co_(3)O_(4) nanoparticles composites exhibit a turnover frequency of 57.5 min−1 for ammonia borane hydrolysis,far higher than those of monometallic Cu and Co_(3)O_(4) nanoparticles,showing the synergistic effect of Cu and Co_(3)O_(4) nanoparticles at their interface.Density functional theory calculations and in situ Raman spectroscopy reveal the catalytic mechanism of dual active sites,in which Co_(3)O_(4) nanoparticles at Cu-Co_(3)O_(4) interface efficiently bind and activate water molecules and Cu nanoparticles easily activate NH3BH3 molecules.This study opens up a new pathway for achieving high-efficiency noble metal-free catalysts for hydrogen generation and other heterogeneous catalysis. | Wenjing Xu Sheli Zhang Ruofan Shen Zhikun Peng Baozhong Liu Jun Li Zhanying Zhang Baojun Li | 2023 | Energy & Environmental Materials2023，6，2： | 0 |
| 8 | Current-Induced Magnetic Switching in an L1_(0) FePt Single Layer with Large Perpendicular Anisotropy Through Spin–Orbit Torque显示文摘In this study,current-induced partial magnetization-based switching was realized through the spin–orbit torque(SOT)in single-layer L1_(0) FePt with a perpendicular anisotropy(K_(u⊥))of 1.19×10^(7) erg·cm^(-3)(1 erg·cm^(-3)=0.1 J·m^(-3)),and its corresponding SOT efficiency(βDL)was 8×10^(-6) Oe·(A·cm^(-2))^(-1)(1 Oe=79.57747 A·m^(-1)),which is several times higher than that of the traditional Ta/CoFeB/MgO structure reported in past work.The SOT in the FePt films originated from the structural inversion asymmetry in the FePt films since the dislocations and defects were inhomogeneously distributed within the samples.Furthermore,the FePt grown on MgO with a granular structure had a larger effective SOT field and effi-ciency than that grown on SrTiO_(3)(STO)with a continuous structure.The SOT efficiency was found to be considerably dependent on not only the sputtering temperature-induced chemical ordering but also the lattice mismatch-induced evolution of the microstructure.Our findings can provide a useful means of efficiently electrically controlling a magnetic bit that is highly thermally stable via SOT. | Kaifeng Dong Chao Sun Laizhe Zhu Yiyi Jiao Ying Tao Xin Hu Ruofan Li Shuai Zhang Zhe Guo Shijiang Luo Xiaofei Yang Shaoping Li Long You | 2022 | Engineering2022，8，5： | 0 |
| 9 | Engineering Vacancy-Atom Ensembles to Boost Catalytic Activity toward Hydrogen Evolution显示文摘The dissociation of water is the rate-determining step of several energy-relating reactions due to high energy barrier in homolysis of H-O bond.Herein,engineering vacancy-atom ensembles via injecting oxygen vacancy(V O)into single facet-exposed TiO_(2)-Pd catalyst to form V_(O)-Pd ensemble is proposed and implemented.The outstanding activity of as-prepared catalyst,1.5-PdTV_(O),toward water dissociation is established with a turnover frequency of 240 min^(−1) in ammonia borane hydrolysis at 298 K.Density functional theory simulation suggests that the V_(O)-Pd ensemble is responsible for the high intrinsic catalytic activity.Water molecules tend to be dissociated on V_(O) sites and ammonia borane molecules on Pd atoms.Those H atoms from water dissociation on V_(O) combine with H atoms from ammonia borane on Pd atoms to generate H_(2).This insights into engineering vacancy-atom ensembles catalysis provide a new avenue to design catalytic materials for important energy chemical reactions. | Ruofan Shen Yanyan Liu Hao Wen Xianli Wu Zhikun Peng Sehrish Mehdi Tao Liu Huanhuan Zhang Shuyan Guan Erjun Liang Baojun Li | 2023 | Energy & Environmental Materials2023，6，1： | 0 |
| 10 | Silk Fibroin and κ-Carrageenan Composite Films Containing Zinc-doped Bioactive Glass for Wound Closure显示文摘Natural biopolymers have excellent biocompatibility and biodegradability;they can be used as biomedical materials for wound healing.In this work,the Silk Fibroin(SF)andκ-carrageenan(κ-Car)composite films containing Zinc-doped Bioactive Glass(ZBG)have been fabricated for wound closure applications.The as-fabricated SF-κ-Car/ZBG composite films have excellent stretchability and foldability,which facilitates them for application as wound dressing.They also exhibit excellent hydrophilicity and water-absorption capacity,which can effectively absorb wound exudate and keep the wound sites under moist state.In addition,the composite films have a good antibacterial effect against S.aureus and E.coli in vitro,which can reduce the risk of wound infection.Their excellent cell compatibility is confirmed by the CCK-8 assay.The strong vascular proliferation and wound regeneration are found in SF-κ-Car/ZBG composite films on a mouse skin wound model.The SF-κCar/ZBG composite films can inhibit the secretion of inflammatory factors,and stimulate the production of vascular factors and collagen fibers.The results derived from the performed investigations revealed that the SF-κ-Car/ZBG composite films are a promising candidate dressing for wound healing applications. | Ruofan Wang Liming Ruan Pengfei Li Tianqi Liu Guohua Jiang | 2021 | Journal of Bionic Engineering2021，18，6： | 0 |
| 11 | Improving the device performances of two-dimensional semiconducting transition metal dichalcogenides: Three strategies显示文摘Two-dimensional(2D)semiconductors are emerging as promising candidates for the next-generation nanoelectronics.As a type of unique channel materials,2D semiconducting transition metal dichalcogenides(TMDCs),such as MoS2 and WS2,exhibit great potential for the state-of-the-art fieldeffect transistors owing to their atomically thin thicknesses,dangling-band free surfaces,and abundant band structures.Even so,the device performances of 2D semiconducting TMDCs are still failing to reach the theoretical values so far,which is attributed to the intrinsic defects,excessive doping,and daunting contacts between electrodes and channels.In this article,we review the up-to-date three strategies for improving the device performances of 2D semiconducting TMDCs:(i)the controllable synthesis of wafer-scale 2D semiconducting TMDCs single crystals to reduce the evolution of grain boundaries,(ii)the ingenious doping of 2D semiconducting TMDCs to modulate the band structures and suppress the impurity scatterings,and(iii)the optimization design of interfacial contacts between electrodes and channels to reduce the Schottky barrier heights and contact resistances.In the end,the challenges regarding the improvement of device performances of 2D semiconducting TMDCs are highlighted,and the further research directions are also proposed.We believe that this review is comprehensive and insightful for downscaling the electronic devices and extending the Moore’s law. | Mo Cheng Junbo Yang Xiaohui Li Hui Li Ruofan Du Jianping Shi Jun He | 2022 | Frontiers of physics2022，17，6： | 0 |
| 12 | Coupling atom ensemble and electron transfer in PdCu for superior catalytic kinetics in hydrogen generation显示文摘The design of high-performance catalysts is the key to the efficient utilization of hydrogen energy.In this work,a PdCu nanoalloy was successfully anchored on TiO_(2)encapsulated with carbon to construct a catalyst.Outstanding kinetics of the hydrolysis of ammonia borane(turnover frequency of 279 mol·min^(-1·)mol_(Pd)^(-1))ranking the third place among Pd-based catalysts was achieved in the absence of alkali.Both experimental research and theoretical calculations reveal a lower activation energy of the B-H bond on the PdCu nanoalloy catalyst than that on pristine Pd and a lower activation energy of the O-H bond than that on pristine Cu.The redistribution of d electron and the shift of the d-band center play a critical role in increasing the electron density of Pd and improving the catalytic performances of Pd_(0.1)Cu_(0.9)/TiO_(2)-porous carbon(Pd_(0.1)Cu_(0.9)/T-PC).This work provides novel insights into highly dual-active alloys and sheds light on the mechanism of dual-active sites in promoting borohydride hydrolysis. | Xinru Zhao Yanyan Liu Huiyu Yuan Hao Wen Huanhuan Zhang Saima Ashraf Shuyan Guan Tao Liu Sehrish Mehdi Ruofan Shen Xianji Guo Yanping Fan Baozhong Liu Baojun Li | 2023 | Nano Research2023，16，7： | 0 |
| 13 | Liquid Metal Fibers显示文摘Liquid metal(LM)is a type of metal or alloy that has a low melting point near room temperature and exhibits the properties of both liquids and metals.Such unconventional materials have been gaining increasing attention within the scientific and industrial communities.Recently,fiber-shaped LM and its composites have especially attracted diverse interest owing to their unique merits,such as excellent conductivity,intrinsic stretchability,facile phase transition,and the ability to be woven or knitted into smart fabrics.This review is dedicated to summarizing different aspects of LM-based fibers,such as their material components,fabrication and design strategies,and remarkable applications by way of their representative properties.Typical fabrication approaches,such as 3D printing of pure LM wire,coating the LM shell on the surface of the fiber,injecting a LM core into hollow fibers,and spinning of LM and polymer hybrids have been comparatively illustrated.Moreover,emerging applications that primarily utilize LM fibers have been demonstrated.Finally,future directions and opportunities in the field are discussed.This categorization of LM fibers is expected to facilitate further investigation and practice in the coming society. | Hongzhang Wang Ruofan Li Yingjie Cao Sen Chen Bo Yuan Xiyu Zhu Jiashu Cheng Minghui Duan Jing Liu | 2022 | Advanced Fiber Materials2022，4，5： | 0 |
| 14 | A Preliminary Study on the Landscape Design of the External Space of Commercial Complexes: Taking Happy Harbor as an Example显示文摘With the development of urban construction in China and the improvement of living standards among urban residents,people today have higher requirements for space quality,and the development of urban commercial complexes has also become an important part of urban development.In this process,the functions of urban commercial complexes,in terms of culture,leisure,commerce,tourism,and office work,are gradually compounded.The integration of the commercial complex landscape with the urban environment shapes a place that provides more humanized services to the urban population.The landscape facilities in the commercial complex square are no longer just a foil,but they are constantly improved and optimized for the benefit of the crowd.Beginning from the exterior space of commercial complexes,this study investigates and analyzes the landscape design,and based on the external landscape distribution of Happy Harbor and the environment created by the landscape,this paper expounds the commercial landscape design and development of a more comprehensive and humanized commercial urban complex space landscape. | Ruofan Li | 2022 | Journal of Architectural Research and Development2022，6，6： | 0 |
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