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Shulin Wang,Mei Zhou,Lingke Zeng,Wubin Dai 한양대학교 세라믹연구소 2016 Journal of Ceramic Processing Research Vol.17 No.10
The purpose of this study is to prepare cheaper and higher performance reticulate porous ceramic (RPC) which is quitesuitable for using in organic carrier. The RPC was made by clay through the polymeric foam replication process. The X-raypowder diffraction (XRD) phase analysis indicated that the RPC was mainly comprised mullite when sintered at 1350 oC. Thesurface status of different component RPCs were also observed under scanning electron microscopy (SEM). The bio-filmproperties of RPC with different component and pore size were evaluated by the removal rates of CODCr and NH3-N. Theresults illustrated that the RPC had high effectiveness on the adsorption of micro-organism, the removal rates of CODCr andNH3-N were all reached to ~ 90%. The bio-film effect was associated to porosity, pore size and surface status of the RPC. Moreover, the porosity and pore size played more importantly role than the surface status in the process of bio-film for theRPC carriers. In fact, the RPC carriers with more porosity and suitable pore size achieve better sewage treatment effect.
Xinyu Wang,Xin Qian,Yonggang Zhang,Xuefei Wang,Shulin Song,Cheng Zhang 한국탄소학회 2021 Carbon Letters Vol.31 No.3
In this study, nitric acid oxidation with varied treatment temperature and time was conducted on the surfaces of polyacrylonitrile- based ultrahigh modulus carbon fibers. Scanning electron microscopy, X-ray photoelectron spectroscopy, Raman spectroscopy and surface tension/dynamic contact angle instruments were used to investigate changes in surface topography and chemical functionality before and after surface treatment. Results showed that the nitric acid oxidation of ultrahigh modulus carbon fibers resulted in decreases in the values of the crystallite thickness Lc and graphitization degree. Meanwhile, increased treating temperature and time made the decreases more obviously. The surfaces of ultrahigh modulus carbon fibers became much more activity and functionality after surface oxidation, e.g., the total surface energy of oxidized samples at 80 °C for 1 h increased by 27.7% compared with untreated fibers. Effects of surface nitric acid oxidation on the mechanical properties of ultrahigh modulus carbon fibers and its reinforced epoxy composites were also researched. Significant decreases happened to the tensile modulus of fibers due to decreased Lc value after the nitric acid oxidation. However, surface treatment had little effect on the tensile strength even as the treating temperature and processing time increased. The highest interfacial shear strength of ultrahigh modulus carbon fibers/epoxy composites increased by 25.7% after the nitric acid oxidation. In the final, surface oxidative mechanism of ultrahigh modulus carbon fibers in the nitric acid oxidation was studied. Different trends of the tensile strength and tensile modulus of fibers in the nitric acid oxidation resulted from the typical skin–core structure.
Expression Characterization, Polymorphism and Chromosomal Location of the Porcine Calsarcin-3 Gene
Wang, Heng,Yang, Shulin,Tang, Zhonglin,Mu, Yulian,Cui, Wentao,Li, Kui Asian Australasian Association of Animal Productio 2007 Animal Bioscience Vol.20 No.9
Calcineurin is a calmodulin dependent protein that functions as a regulator of muscle cell growth and function. Agents capable of interacting with calcineurin could have important applications in muscle disease treatment as well as in the improvement of livestock production. Calsarcins comprise a family of muscle-specific calcineurin binding proteins which play an important role in modulating the function of calcineurin in muscle cells. Recently, we described the first two members of the calsarcin family (calsarcin-1 and calsarcin-2) in the pig. Here, we characterized the third member of the calsarcin family, calsarcin-3, which is also expressed specifically in skeletal muscle. However, unlike calsarcin-1 and calsarcin-2, the calsarcin-3 mRNA expression in skeletal muscle kept rising throughout the prenatal and postnatal development periods. In addition, radiation hybrid mapping indicated that porcine calsarcin-3 mapped to the distal end of the q arm of pig chromosome 2 (SSC2). A C/T single nucleotide polymorphism site in exon 5 was genotyped using the denaturing high performance liquid chromatography (DHPLC) method and the allele frequencies at this locus were significantly different among breeds.
( Shulin Cheng ),( Wanyan Wang ),( Shan Yang ),( Xiufang Cheng ) 한국정보처리학회 2021 Journal of information processing systems Vol.17 No.3
With an increase in the scale of recommender systems, users’ rating data tend to be extremely sparse. Some methods have been utilized to alleviate this problem; nevertheless, it has not been satisfactorily solved yet. Therefore, we propose an effective pre-rating method based on users’ dichotomous preferences and average ratings fusion. First, based on a user-item ratings matrix, a new user-item preference matrix was constructed to analyze and model user preferences. The items were then divided into two categories based on a parameterized dynamic threshold. The missing ratings for items that the user was not interested in were directly filled with the lowest user rating; otherwise, fusion ratings were utilized to fill the missing ratings. Further, an optimized parameter λ was introduced to adjust their weights. Finally, we verified our method on a standard dataset. The experimental results show that our method can effectively reduce the prediction error and improve the recommendation quality. As for its application, our method is effective, but not complicated.
Ultrasonic Vibration and Rheocasting for Refinement of Mg–Zn–Y Alloy Reinforced with LPSO Structure
Shulin Lü,Xiong Yang,Liangyan Hao,Shusen Wu,Xiaogang Fang,Jing Wang 대한금속·재료학회 2018 METALS AND MATERIALS International Vol.24 No.6
In this work, ultrasonic vibration (UV) and rheo-squeeze casting was first applied on the Mg alloy reinforced with long periodstacking ordered (LPSO) structure. The semisolid slurry of Mg–Zn–Y alloy was prepared by UV and processed by rheosqueezecasting in succession. The effects of UV, Zr addition and squeeze pressure on microstructure of semisolid Mg–Zn–Yalloy were studied. The results revealed that the synergic effect of UV and Zr addition generated a finer microstructure thaneither one alone when preparing the slurries. Rheo-squeeze casting could significantly refine the LPSO structure and α-Mgmatrix in Mg96.9Zn1Y2Zr0.1alloy without changing the phase compositions or the type of LPSO structure. When the squeezepressure increased from 0 to 400 MPa, the block LPSO structure was completely eliminated and the average thickness ofLPSO structure decreased from 9.8 to 4.3 μm. Under 400 MPa squeeze pressure, the tensile strength and elongation of therheocast Mg96.9Zn1Y2Zr0.1alloy reached the maximum values, which were 234 MPa and 17.6%, respectively, due to its fineα-Mg matrix (α1-Mg and α2-Mg grains) and LPSO structure.
Ghalali Aram,Wang Liangzhe,Stopsack Konrad H.,Rice James M.,Wu Shulin,Wu Chin-Lee,Zetter Bruce R.,Rogers Michael S. 생화학분자생물학회 2022 Experimental and molecular medicine Vol.54 No.-
The transcript encoding Antizyme Inhibitor 1 (AZIN1) is frequently edited in various cancers, and this editing is associated with enhanced tumor aggressiveness. After comparison of wild-type AZIN1 (wtAZIN1) and edited AZIN1 (edAZIN1, which contains a Ser367Gly substitution), we report differential binding of edAZIN1 to a small set of proteins; specifically, edAZIN1 binds to alpha-smooth muscle actin (ACTA2), gamma actin 1 (ACTG1), and myosin9, whereas wtAZIN1 does not. This binding enables nuclear translocation of edAZIN1. In contrast to overexpression of edAZIN1 and, to a lesser extent, (editable) wtAZIN1, overexpression of an uneditable AZIN1 allele does not promote a cellular phenotype associated with increased tumorigenicity. In patients, both editing and nuclear localization of AZIN1 are common and are associated with tumor aggressiveness, i.e., a higher Gleason score, higher genomic instability, and a shorter progression-free survival time. In conclusion, the data indicate that binding of edAZIN1 to the actin/myosin9 complex supports its nuclear translocation, leading to enhanced cellular aggressiveness, and is associated with worse prostate cancer outcomes.
Li, Changchun,Wang, Zhigang,Liu, Bang,Yang, Shulin,Zhu, Zhengmao,Fan, Bin,Yu, Mei,Zhao, Shuhong,Li, Kui Asian Australasian Association of Animal Productio 2004 Animal Bioscience Vol.17 No.4
The genetic diversities and relationships of 10 Chinese indigenous pig breeds and three exotic pig breeds have been evaluated using 26 microsatellites recommended by the Food and Agriculture Organization & the International Society of Animal Genetics (FAO-ISAG). The allele frequencies, genetic heterozygosity (H) and polymorphism information content (PIC) have been calculated. The results showed that genetic diversity of Chinese indigenous pig breeds is higher than that of the introduced pig breeds. The clustering of 10 breeds is generally consistent with their geographical distribution.
A reduced time-varying model for a long beam on elastic foundation under moving loads
Guiming Mei,Caijin Yang,Shulin Liang,Jiangwen Wang,Dong Zou,Weihua Zhang,Yunshi Zhao,Zhong Huang,Shuqi Song,Mengying Tan,Yao Cheng,Bingrong Miao 대한기계학회 2018 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.32 No.9
Dynamics of a long beam on the elastic foundation subjected to moving loads is studied in the present paper. The sliding window technique is used to dynamically truncate the long beam and a reduced time-varying beam system is obtained. The Hamilton’s principle is employed to establish the equations of motion of the reduced system. The variable separation method is adopted to solve dynamical responses of the reduced system. Examples of a long simply supported Timoshenko beam on the nonlinear foundation subjected to a single moving load and multiple loads are included. Numerical results of the reduced model compared with the ones obtained from the moving element model adapted in literature are carried out to show the validity and the good efficiency of the method proposed in the present paper.
Analysis of dynamic stability in a turning process based on a 2-DOFs model with overlap factor
Laixi Zhang,Xingsong Wang,Shulin Liu 대한기계학회 2012 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.26 No.6
A novel 2-DOFs dynamic turning model including the compliance of workpiece and cutting tool is developed. In past studies, most of them were based on SDOF models and either the workpiece or tool was simplified as rigid one. Meanwhile, traditional regenerative chatter models focus mainly on cross cutting which was particularly prone to chatter. It is evident that such models cannot describe cutting system comprehensively. In order to tackle this problem, we introduce the overlap factor to make the novel model also suitable for length-wise cutting. Stability was analyzed after performing the Laplace transformation, correlation between critical chip width and spindle speed was derived. Simulation suggests that the new model has a larger critical chip width which complies with practical situation.