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| 1 | Paving the Way to Smart Micro Energy Grid:Concepts,Design Principles,and Engineering Practices显示文摘The interconnection between initially independent energy infrastructures offers additional system flexibility and efficiency.The integration at distribution level simplifies the implementation of the integrated energy system functionalities.This paper proposes concepts and design principles of a smart micro energy grid(MEG)for accommodating micro-grids,distributed poly-generation systems,energy storage facilities,and associated energy distribution infrastructures.The energy management system is responsible for the smart operation of the MEG while supporting multiple criteria,such as safety,economy,and environmental protection.To realize the vision of the smart MEG,an engineering game theory based energy management system with self-approaching-optimum capability is investigated.Based on the proposed concepts,design principles,and energy management system,this paper presents a prototype of China’s first conceptual solar-based smart MEG,established in Qinghai University. | Shengwei Mei Rui Li Xiaodai Xue Ying Chen Qiang Lu Xiaotao Chen Carsten D.Ahrens Ruomei Li Laijun Chen | 2017 | CSEE Journal of Power and Energy Systems2017，3，4： | 14 |
| 2 | Identification of reversible insertion-type lithium storage reaction of manganese oxide with long cycle lifespan显示文摘Recently,MnO2 has gained attention as an electrode material because of its very high theoretical capacity and abundant availability.However,the very high volumetric change caused by its conversion-type reaction results in bad reversibility of charge-discharge.In this study,δ-MnO2 of thickness 8 nm anchored on the surface of carbon nanotubes(CNT)by Mn-O-C chemical bonding is synthesized via a facile hydrothermal method.Numerous ex-situ characterizations of the lithium storage process were performed.Furthermore,density functional theory(DFT)calculations indicated thatδ-MnO2(012)thermodynamically prefers bonding with CNTs.Moreover,the interfacial interaction reinforces the connection of Mn-O and reduces the bond strength of Li-O in lithiated MnO2,which could facilitate an intercalation-type lithium storage reaction.Consequently,the as-synthesizedδ-MnO2 retains an excellent reversible capacity of 577.5 mAh g-1 in 1000 cycles at a high rate of 2 A g-1 between 0.1 V and 3.0 V.The results of this study demonstrate the possibility of employing the cost-effective transition metal oxides as intercalation lithium storage dominant electrodes for advanced rechargeable batteries. | Yuxuan Zhang Fang Lian Jianhao Lu Laijun Ma Ning Chen Yanan Chen Dingguo Xia | 2020 | Journal of Energy Chemistry2020，29，7： | 3 |
| 3 | Identification model of geochemical anomaly based on isolation forest algorithm显示文摘The methods for geochemical anomaly detection are usually based on statistical models, and it needs to assume that the sample population satisfies a specific distribution, which may reduce the performance of geochemical anomaly detection. In this paper, the isolation forest model is used to detect geochemical anomalies and it does not require geochemical data to satisfy a particular distribution. By constructing a tree to traverse the average path length of all data, anomaly scores are used to characterize the anomaly and background fields, and the optimal threshold is selected to identify geochemical anomalies. Taking 1∶200 000 geochemical exploration data of Fusong area in Jilin Province, NE China as an example, Fe2O3 and Pb were selected as the indicator elements to identify geochemical anomalies, and the results were compared with traditional statistical methods. The results show that the isolation forest model can effectively identify univariate geochemical anomalies, and the identified anomalies results have significant spatial correlation with known mine locations. Moreover, it can identify both high value anomalies and weak anomalies. | SHANG Yinmin LU Laijun KANG Qiankun | 2019 | Global Geology2019，22，3： | 1 |
| 4 | Synergically enhanced piezocatalysis performance of eco-friendly(K_(0.52)Na_(0.48))NbO_(3) through ferroelectric polarization and defects显示文摘Piezocatalysis has attracted unprecedented research interest as a newly emerging catalysis technology.However,the inherent insulating property of ferroelectric materials ultimately leads to the poor vibration-electricity conversion ability.Herein,this work reports the(K_(0.52)Na_(0.48))NbO_(3) ferroelectric ceramics(KNNFCx),for which the FeCo modification strategy is proposed.The substitution of the moderate amount of FeCo(x=0.015)at Nb site not only optimizes ferroelectricity but also produces beneficial defects,notably increasing Rhodamine B water purification efficiency to 95%.The pinning effect of monovalent oxygen vacancies on ferroelectric domains is responsible for the excellent ferroelectric polarization of KNNFC0.015 through the generation of an internal field to promote charge carriers separation and reduce nonradiative recombination.Importantly,the accompanying electron carriers can easily move to the material surface and participate in redox reactions because they have low activation energy.Therefore,ferroelectric polarization and defects play synergetic roles in enhancing piezocatalytic performance. | Min Zhou Laijun Liang Dingze Lu Xiaomei Lu Zheng Wang Fengzhen Huang Pengfei Cheng Dongdong Liu Mengqi Tian Qiuping Wang Yunjie Zhang | 2023 | International Journal of Minerals,Metallurgy and Materials2023，30，10： | 1 |
| 5 | Application of Grey System GM (1,1) model and unary linear regression model in coal consumption of Jilin Province显示文摘The data on the coal production and consumption in Jilin Province for the last ten years were collected,and the Grey System GM( 1,1) model and unary linear regression model were applied to predict the coal consumption of Jilin Production in 2014 and 2015. Through calculation,the predictive value on the coal consumption of Jilin Province was attained,namely consumption of 2014 is 114. 84 × 106 t and of 2015 is 117. 98 ×106t,respectively. Analysis of error data indicated that the predicted accuracy of Grey System GM( 1,1) model on the coal consumption in Jilin Province improved 0. 21% in comparison to unary linear regression model. | TIAN Songlin LU Laijun | 2015 | Global Geology2015，18，1： | 1 |
| 6 | B-Site Nanoscale-Ordered Structure Enables Ultra-High Tunable Performance显示文摘Tunable devices constructed by ferroelectric thin flms are often desired to possess a low dielectric loss while maintainging a high dielectric tunability over a broad operating temperature range in applications,for example,resonators,filters,or phase shifters.However,it is dificult to simultaneously achieve these characteristics by traditional strategies,such as doping and strain modifying.Here,we demonstrate that the dielectric tunability of the sol-gel-prepared Pb(Sc_(1/2)Nb_(1/2))_(0.9)(Mg_(1/3)Nb_(2/3))_(0.O3)(PSNMN)thin film can be almost doubled from~47%to~80.0%(at 10kHz)at a low electric field(~530kV/cm),and the dielectric loss can be sharply reduced by more than an order of magnitude,from~0.50 to~0.037(at 1 kHz)when the thin flm was annealed in air at 650℃ for 15h under the help of an atmosphere-compensating-block(ACB)made from the proto-PSNMN gel.Moreover,the PSNMN thin flm annealed with ACB also exhibited an extremely high thermally-stable dielectric tunability in an ultrabroad temperature range(>130 K),which could be attributed to the Maxwell-Wagner(MW)effect generated by the interface between the PSNMN disordered matrix and the B-site nanoscale-ordered structure formed during the long-term annealing process.The reduced dielectric loss is mainly benefited from the reduced concentration of oxygen vacancy and the possibie MW efects,and the enhanced dielectric tunability could be ascribed to the weaker domain-pinning effect by oxygen vacancy.The breakthrough provides a new universal strategy to achieve utrahigh tunable performance in A(B'_(1/2)B'_(1/2))O3 ferroelectric thin films with a B-site nanoscale-ordered structure,meanwhile it paves the way for ultraintergrated tunable thin-flm-devices with great phase shifter performance in practical applications. | Biaolin Peng Qiuping Lu Yi-Chi Wang Jing-Feng Li Qi Zhang Haitao Huang Laijun Liu Chao Li Limei Zheng Zhong Lin Wang | 2023 | Research2023，，1： | 0 |
| 7 | Study on deep structure in Ailaoshan region based on aeromagnetic interpretations显示文摘Linear and circular interpretation structure maps of different relative depths are obtained by processing 1:200000 aeromagnetic data to the pole in Ailaoshan region,interpreting upward extension of 4 heights,extracting a vertical second derivative line of 0 value and a series of calculations. Concealed boundary of deep magnetic rocks can be delineated according to the maps. On the basis of the conclusions above,a set of economical and practical methods to graph the deep structure are summarized. In addition,the relationship between deep structure and mineralization positions is discussed. | PENG Yuanyuan LI Shiehao LU Laijun LIU Guangsheng WU Jun | 2009 | Global Geology2009，12，4： | 0 |
| 8 | Development and application of geochemical data processing system based on fractal theory显示文摘GC-GIS system is a geochemical data processing system based on fractal theory. The system realized quantity statistics function by calling Surfer and MapInfo software, and it is compiled with Visual Basic language. This system is designed to integrate the functions both quantity statistics of Surfer and spatial data management of MapInfo. A new algorithm of fractal is added up to GC-GIS. Taking example for Weichang region of Hebei to test the system, the processing results show that the model can match the real distribution of mine well. | LI Shichao PENG Yuanyuan JIANG Wei MENG Jingyao LU Laijun | 2011 | Global Geology2011，14，4： | 0 |
| 9 | Constructing Nanoscale Topology on the Surface of Microfibers Inhibits Fibroblast Fibrosis显示文摘Fibrosis is a common problem in soft tissue regeneration,often caused by the differentiation of fibroblasts into myofibro-blasts.Because of the nanoscale topology that regulates the mechanical transduction of cells,nanofibers or nanoparticles are commonly used to modulate fibroblast differentiation.However,the strength of nanofibers is insufficient,and the physi-ological toxicity of nanoparticles still remains to be verified.In this study,self-induced crystallization was used to construct nano-protrusions on the random and aligned polycaprolactone microfibers to regulate the behavior of fibroblasts.The results revealed that the mechanical properties of microfibers with a nanoscale topology were improved.Immunofluorescence staining manifested that nano-protrusions impeded the activation of integrins and vinculins,thereby inhibiting the nuclear transfer of Yes-associated protein,resulting in a decrease in the expression ofα-smooth muscle actin.Nanoscale topology of microfibers hampered the activation of the Rho/ROCK signalling pathway.In general,we used a simple process to con-struct a fibrous scaffold with a micro-nano multilevel structure.This structure can hinder the transformation of fibroblasts into myofibroblasts on both random and aligned fibers,which is expected to prevent fibrosis. | Yongjie Jiao Xiaojing Li Jinjie Chen Chaojing Li Laijun Liu Xingxing Liu Fujun Wang Guang Chen Lu Wang | 2022 | Advanced Fiber Materials2022，4，5： | 0 |
| 10 | Neuroprotective effect of Eleutheroside B on 1-methyl-4-phenylpyridinium ion-induced apoptosis in PC12 cells显示文摘Apoptosis and viability of PC12 cells following 1-methyl-4-phenylpyridinium ion (MPP+)-induced injury were monitored by flow cytometry, following Annexin V-propidium iodide double labeling, and 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, respectively. The release of lactate dehydrogenase, superoxide dismutase activity and levels of malondialdehyde were determined by UV spectrophotometry. The changes in mitochondrial membrane potential and the intracellular concentration of calcium were determined by flow cytometry, and the activity of caspase-3 was monitored by western blot. According to cell viability and apoptosis studies, MPP+-induced apoptosis in PC12 cells was inhibited in the presence of 10 μg/mL of Eleutheroside B. Our results indicate that the neuroprotective effect of Eleutheroside B, following MPP+-induced apoptosis in PC12 cells, involves increasing the anti-oxidative stress capacity of cells, maintaining the high-energy state of mitochondrial membrane potential, reducing intracellular calcium concentration and inhibiting caspase-3 activity. | Fang Lu Yang Dong Laijun Deng Shumin Liu Shihui Zhou Lifeng An Bo Tang | 2011 | Neural Regeneration Research2011，6，18： | 0 |
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