The influence of Li₂O incorporation on the electrochemical properties of Li₄Ti₅O₁₂ thin film electrodes

Xiao, Cheng-Fan,Kim, Jong Heon,Choi, Daehwan,Park, Yun Chang,Kim, Jung Hyun,Park, Jozeph,Kim, Yong Joo,Kim, Hyun-Suk ELSEVIER SCIENCE 2019 JOURNAL OF ALLOYS AND COMPOUNDS Vol.801 No.-

<P><B>Abstract</B></P> <P>High quality Li<SUB>4</SUB>Ti<SUB>5</SUB>O<SUB>12</SUB> anode films were deposited by radio-frequency co-sputtering Li<SUB>4</SUB>Ti<SUB>5</SUB>O<SUB>12</SUB> and Li<SUB>2</SUB>O targets on Pt-coated stainless steel substrates. The use of an additional Li<SUB>2</SUB>O target not only compensated the lithium content in the resulting layers but also decreased the impurity content. Consequently, the electrochemical properties of the Li<SUB>4</SUB>Ti<SUB>5</SUB>O<SUB>12</SUB> anode exhibited better electrochemical properties than an identical film prepared using a single Li<SUB>4</SUB>Ti<SUB>5</SUB>O<SUB>12</SUB> target. Upon annealing, the co-sputtering Li<SUB>4</SUB>Ti<SUB>5</SUB>O<SUB>12</SUB> showed a relatively high discharge capacity of 618 mAh/cm<SUP>3</SUP> (theoretical specific capacity of 598.5 mAh/cm<SUP>3</SUP>) at a current density of 0.1 C. Also, superior high rate capability with a discharge capacity of 309 mAh/cm<SUP>3</SUP> at 20 C was observed, accompanied by an excellent cycling stability, with a capacity retention ratio exceeding 94% after 500 cycles at 1 C. The co-sputtering using Li<SUB>2</SUB>O target is most likely to have enhanced the electrochemical properties of the pure Li<SUB>4</SUB>Ti<SUB>5</SUB>O<SUB>12</SUB> anode.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Co-sputtering of Li<SUB>2</SUB>O and Li<SUB>4</SUB>Ti<SUB>5</SUB>O<SUB>12</SUB> target during the growth of LTO anode layer. </LI> <LI> The growth of high purity spinel LTO film by accommodating Li<SUB>2</SUB>O into Li deficient sites. </LI> <LI> LTO exhibits superior electrochemical performance with excellent rate capability and cycling performance. </LI> </UL> </P>

Relationship Between PTEN and Livin Expression and Malignancy of Renal Cell Carcinomas

Cheng, Tao,Zhang, Jian-Guo,Cheng, Yuan-He,Gao, Zhong-Wei,Ren, Xiao-Qiang Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.6

Objectives: This study focused on PTEN and Livin expression and associations with malignancy in human renal clear cell carcinomas (RCCC). Methods: PTEN and Livin expression was assessed in 100 RCCC tissue samples, 50 paracarcinoma cases, and 20 normal renal tissue samples using the immunohistochemical Streptavidin proxidase (SP) method. The relationships between binding and corresponding biological characteristics, such as histological grade, lymph node metastases, and clinical stages were analyzed. Results: Positive PTEN expression in RCCC was significantly lower than in renal tissue adjacent to carcinoma tissue and normal renal tissue (P<0.01). Livin expression in the renal tissue adjacent to the carcinoma and normal renal tissues exhibited only low levels, whereas overall Livin expression in RCCC was statistically significant (P<0.01). In RCCC, PTEN expression rate gradually decreased with an increase in clinical stage, whereas that of Livin increased to statistically significant levels (P<0.01), PTEN and Livin levels being negatively correlated (r=-0.395, P<0.01). Conclusions: PTEN and Livin are important in RCCC development. The two factors combined are expected to provide indices for estimating RCCC malignancy and progression levels, as well as references for RCCC diagnosis and treatment.

Probabilistic determination of initial cable forces of cable-stayed bridges under dead loads

Cheng, Jin,Xiao, Ru-Cheng,Jiang, Jian-Jing Techno-Press 2004 Structural Engineering and Mechanics, An Int'l Jou Vol.17 No.2

This paper presents an improved Monte Carlo simulation for the probabilistic determination of initial cable forces of cable-stayed bridges under dead loads using the response surfaces method. A response surface (i.e. a quadratic response surface without cross-terms) is used to approximate structural response. The use of the response surface eliminates the need to perform a deterministic analysis in each simulation loop. In addition, use of the response surface requires fewer simulation loops than conventional Monte Carlo simulation. Thereby, the computation time is saved significantly. The statistics (e.g. mean value, standard deviation) of the structural response are calculated through conventional Monte Carlo simulation method. By using Monte Carlo simulation, it is possible to use the existing deterministic finite element code without modifying it. Probabilistic analysis of a truss demonstrates the proposed method' efficiency and accuracy; probabilistic determination of initial cable forces of a cable-stayed bridge under dead loads verifies the method's applicability.

A Collaborative Filtering Recommendation Algorithm Fusing Rating and Time Interval Similarity on Item Attributes

Xiao-hui Cheng,Yu Wu,Yun Deng 보안공학연구지원센터 2016 International Journal of Grid and Distributed Comp Vol.9 No.12

Traditional methods UBCF have limitations of poor recommendation quality and problems of data sparsity. To alleviate these problems, a novel collaborative filtering algorithm is designed, which firstly get the users’ ratings and time intervals for each attribute from the users’ ratings for items, then produce two methods to calculate the similarity between users, introduce a weighting parameters to control the weight between the two similarity methods in order to get a fusion similarity between two users. The results show that this method is able to improve the accuracy of predicted values, resulting in improving recommendation quality of the collaborative filtering recommendation algorithm.

From Armistice to Peace on the Korean Peninsula : China’s Evolving Roles

Cheng Xiao He 원광대학교 한중관계연구원 2015 韓中關係硏究 Vol.1 No.1

Ultimate behavior of long-span steel arch bridges

Cheng, Jin,Jiang, Jian-Jing,Xiao, Ru-Cheng,Xiang, Hai-Fan Techno-Press 2002 Structural Engineering and Mechanics, An Int'l Jou Vol.14 No.3

Because of the increasing span of arch bridges, ultimate capacity analysis recently becomes more focused both on design and construction. This paper investigates the static and ultimate behavior of a long-span steel arch bridge up to failure and evaluates the overall safety of the bridge. The example bridge is a long-span steel arch bridge with a 550 m-long central span under construction in Shanghai, China. This will be the longest central span of any arch bridge in the world. Ultimate behavior of the example bridge is investigated using three methods. Comparisons of the accuracy and reliability of the three methods are given. The effects of material nonlinearity of individual bridge element and distribution pattern of live load and initial lateral deflection of main arch ribs as well as yield stresses of material and changes of temperature on the ultimate load-carrying capacity of the bridge have been studied. The results show that the distribution pattern of live load and yield stresses of material have important effects on bridge behavior. The critical load analyses based on the linear buckling method and geometrically nonlinear buckling method considerably overestimate the load-carrying capacity of the bridge. The ultimate load-carrying capacity analysis and overall safety evaluation of a long-span steel arch bridge should be based on the geometrically and materially nonlinear buckling method. Finally, the in-plane failure mechanism of long-span steel arch bridges is explained by tracing the spread of plastic zones.

Probabilistic shear-lag analysis of structures using Systematic RSM

Cheng, Jin,Cai, C.S.,Xiao, Ru-Cheng Techno-Press 2005 Structural Engineering and Mechanics, An Int'l Jou Vol.21 No.5

In the shear-lag analysis of structures deterministic procedure is insufficient to provide complete information. Probabilistic analysis is a holistic approach for analyzing shear-lag effects considering uncertainties in structural parameters. This paper proposes an efficient and accurate algorithm to analyze shear-lag effects of structures with parameter uncertainties. The proposed algorithm integrated the advantages of the response surface method (RSM), finite element method (FEM) and Monte Carlo simulation (MCS). Uncertainties in the structural parameters can be taken into account in this algorithm. The algorithm is verified using independently generated finite element data. The proposed algorithm is then used to analyze the shear-lag effects of a simply supported beam with parameter uncertainties. The results show that the proposed algorithm based on the central composite design is the most promising one in view of its accuracy and efficiency. Finally, a parametric study was conducted to investigate the effect of each of the random variables on the statistical moment of structural stress response.

Construction and Differential Screening of a cDNA Library Specific to Osmotic Stress of Haloxylon ammodendron Seedlings

( Xiao Cheng Jiang ),( Xin Hong Guo ),( Xiao Ling Pan ),( Song Quan Song ) 생화학분자생물학회 2004 BMB Reports Vol.37 No.5

A subtracted cDNA library specific to osmotic stress of Haloxylon ammodendron (Mey.) Bge seedlings was constructed by suppression subtractive hybridization (SSH) and T/A cloning. SSH was performed between two groups of H. ammodendron seedlings, one was cultivated in Hoagland (H) solution as a driver and the other group was treated with osmotic stress of the Hoagland solution by the addition of 400 mM mannitol (M), as a tester. The library consisted of about 400 recombinant clones, with the average size being of 500 bp, ranging from 300 bp to 1500 bp. Using a PCR-select differential screening kit, 100 recombinant clones were randomly chosen from the subtracted cDNA library and hybridized with forward,reverse subtracted and unsubtracted probes for two rounds. As a result, 21 positive clones specific to osmotic stress were obtained and some of them were verified by Northern blot analysis. The sequencing analysis of 6 positive clones and the following homology comparison to GenBank [blastx] non-redundant databases characterized that two sequences obtained in this experiment may contribute to novel drought-related genes.

Advanced aerostatic stability analysis of suspension bridges

Xiao, Ru-Cheng,Cheng, Jin Techno-Press 2004 Wind and Structures, An International Journal (WAS Vol.7 No.1

Aerostatic instability of a suspension bridge may suddenly appears when the deformed shape of the structure produces an increase in the value of the three components of displacement-dependent wind loads distributed in the structure. This paper investigates the aerostatic stability of suspension bridges using an advanced nonlinear method based on the concept of limit point instability. Particular attention is devoted to aerostatic stability analysis of symmetrical suspension bridges. A long-span symmetrical suspension bridge (Hu Men Bridge) with a main span of 888 m is chosen for analysis. It is found that the initial configuration (symmetry or asymmetry) may affect the instability configuration of structure. A finite element software for the nonlinear aerostatic stability analysis of cable-supported bridges (NASAB) is presented and discussed. The aerostatic failure mechanism of suspension bridges is also explained by tracing aerostatic instability path.

Copy Detection Technique with Enhanced Efficiency by using Substring Comparison Algorithm

Xiao-hui Cheng,Meng Hu,Tong Wang,Yun Deng 보안공학연구지원센터 2016 International Journal of Security and Its Applicat Vol.10 No.12

As the information was being overloaded from time to time, a significant technique should be accomplished by several search engines that exists will use from the databases to eradicate the replicas of data which was available in articles and to present the outcomes of the search to users in terms of percentage of the amount of the data copied from the original file. Plagiarism is the process of bestowing one’s creative ideas as our individual conception. It is does not meant that anybody cannot use other’s considerations or workings, anybody can use their data by giving the actual credit the original users by stating their names in literature or in references and also by giving special note on acknowledgements. Copying the content of the others work is mainly considered to be a big crime in terms of research and in terms of the owning the idea of the others. The main idea of this work is to identify the extent of the data that was being copied or to identify the amount of data that was being copied from other peoples work or their own credited work. Performance of plagiarizing a document is not limited to word files or pdf files, it is possible to plagiarize even images and other files too. Hence, we were focused on finding the plagiarism in word files which includes academics and research articles.