An Improved PSO Algorithm Based CommunityTopic Refinement Strategy for Social Network

Lin Cui,Caiyin Wang,Xiaoyin Wu 보안공학연구지원센터 2016 International Journal of Future Generation Communi Vol.9 No.1

Aiming at the division roughness of topic classification existing in the most online social networks community, the improved particle swarm optimization algorithm is applied to refine community topics and concepts of community seeds and community topic are also introduced. In this paper, first of all, the explicit links existing in the community are mined, and the basic community structure is constructed, then the community content is deeply analyzed, according to implicit feature between nodes under online community, community topic categories are elaborately refined until structure is stable. Experiments show that this proposed algorithm can accelerate the convergence of the node and greatly improves the topic mining accuracy of online social network compared with the state-of-art CR2NDAS model and PLSA model.

Comparative Study on Transcatheter Arterial Chemoembolization, Portal Vein Embolization and High Intensity Focused Ultrasound Sequential Therapy for Patients

Cui, Lin,Liu, Xing-Xiang,Jiang, Yong,Wu, Xing-Jun,Liu, Jian-Jun,Zhou, Xiang-Rong,He, Xue-Jun,Huang, Xin-En Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.12

Objective: To investigate the safety and efficacy of transcatheter arterial chemoembolization (TACE), combined with portal vein embolization (PVE), and high intensity focused ultrasound (HIFU) sequential therapy in treating patients with hepatocellular carcinoma (HCC). Methods: Patients with inoperative HCC were treated by two methods: in the study group with TACE first, then PVE a week later, and then TACE+PVE every two months as a cycle, after 2~3 cycles finally HIFU was given; in the control group only TACE+PVE was given. Response (CR+PR), and disease control rate (CR+PR+SD), side effects, overall survival and time to progress were calculated. Results: Main side effects of both groups were nausea and vomiting. No treatment related death occurred. In the study group, 32 patients received TACE for overall 67 times, PVE 64 times, and HIFU 99 times; on average 2.1, 2 and 3.1 times for each patient, respectively. In the control group, 36 patients were given TACE 78 times and PVE 74 times, averaging 2.2 and 2.1 times per patient. Effective rate: 25.0% in study group and 8.3% in control group (p>0.05). Disease control rates were 71.9% and 44.4%, respectively (p<0.05). In patients with portal vein tumor thrombus, the rate reduced over 1/2 after treatment was 69.2%(9/13) in the study and 21.4%(3/14) in the control group (p<0.05). Rate of AFP reversion or decrease over 1/2 was 66.7%(16/24) in study and 37%(10/27) (p<0.05) in control group. Median survival time: 16 months in study and 10 months in control group. PFS was 7months in study and 3 months in control group. Log-rank test suggested that statistically significant difference exists between two groups (p=0.024). 1-, 2- and 3-year survival rates were 56.3%, 18.8% and 9.3% in study, while 30.6%, 5.6% and 0 in control group, respectively, with statistically significant difference between two groups (by Log-rank, p = 0.014). Conclusions: The treatment of TACE+PVE+HIFU sequential therapy for HCC increases response rate, prolong survival, and could thus be a safe and effective treatment for advanced cases.

Flexible CNC polishing process and surface integrity of blades

Xiaojun Lin,Dongbo Wu,Xiufeng Shan,Gang Wu,Tong Cui,Yun Zhang,Liangyi Hu,Jie Yu 대한기계학회 2018 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.32 No.6

The surface integrity of aero-engine blades directly affects its mechanical behavior. To improve the surface integrity and address the problem, that is, the blade is mainly polished manually, a flexible polishing process was proposed and surface integrity was investigated. First, flexible polishing technology and the machine tool that the authors researched and developed were introduced. Second, a polishing experiment was conducted on a TC4 titanium alloy blade. Finally, the surface integrity before and after polishing was measured and the results were compared and analyzed. Results showed that the knife marks, pits, unevenness, and other defects of the blade surface were effectively removed through flexible polishing; the surface residual compressive stress was reduced from 483 MPa to 397 MPa; the surface roughness was reduced to Ra 0.4 μm; the surface micro-hardness increased by 18 HV; and the surface metamorphic layer caused by milling was removed. Flexible polishing effectively improved the surface quality without affecting the depth layer quality of the workpiece.

Site-directed Mutagenesis of the Toxin from the Chinese Scorpion Buthus martensii Karsch (BmKAS): Insight into Sites Related to Analgesic Activity

Yong Cui,Yong-Bo Song,Lin Ma,Yan-Feng Liu,Guo-Dong Li,Chun-Fu Wu,Jing-Hai Zhang 대한약학회 2010 Archives of Pharmacal Research Vol.33 No.10

This study utilized the E. coli expression system to investigate the role of amino acid residues in toxin from the Chinese scorpion - Buthus martensii Karsch (BmKAS). To evaluate the extent to which residues of the toxin core contribute to its analgesic activity, ten mutants of BmKAS were obtained by PCR. Using site-directed mutagenesis, all of these residues were substituted with different amino acids. This study represents a thorough mapping and elucidation of the epitopes that form the molecular basis of the toxin’s analgesic activity. Our results showed large mutant-dependent differences that emphasize the important roles of the studied residues.

Iron-doped chitosan microsphere for As(III) adsorption in aqueous solution: Kinetic, isotherm and thermodynamic studies

Xiaoyu Lin,Leli Wang,Shi Jiang,Longzhe Cui,Gui-Ping Wu 한국화학공학회 2019 Korean Journal of Chemical Engineering Vol.36 No.7

Iron-doped chitosan microsphere was prepared successfully and employed for effective adsorption of As(III). The results showed that the adsorption capacity benefited from the increase of iron content, and the maximum adsorption capacity was achieved at pH=8. According to the study of adsorption kinetics, adsorption rate was controlled by liquid film diffusion at a lower rotational speed, while it was controlled by chemical reaction rate at a higher rotational speed. The Freundlich and Temkin models exhibited a better fit to adsorption isotherm data, which indicated the adsorption of As(III) on iron-doped chitosan microsphere was chemisorption and the active sites of adsorbents were non-uniform distributed. Adsorption process was a spontaneous exothermic reaction because its ΔG and ΔH were negative. In presence of cations (Cd2+, Pb2+ or Zn2+) in solution, the iron-doped chitosan microsphere also showed the significant removal of As(III). However, the existence of anions (NO3 , SO4 2 or PO4 3) inhibited the As(III) removal at different level. PO4 3 showed the most significant side effects on the removal of As(III) by iron-doped chitosan microsphere. The used iron-doped chitosan adsorbent can be effectively regenerated using 1.0mol·L1 NaOH solution, and the adsorption efficiency decreased only 15.69% after being reused three times. The results of XPS, FT-IR showed that the adsorption was mainly achieved by the coordination interaction between As (III) and doped Fe in adsorbent.

Rhodium-Catalyzed Highly Regioselective C-H Arylation of Imidazo[1,2-a]pyridines with Aryl Halides and Triflates

Yi Liu,Lin He,Guoqiang Yin,Guojie Wu,Yingde Cui 대한화학회 2013 Bulletin of the Korean Chemical Society Vol.34 No.8

A convenient Rh-catalyzed C-H arylation of imidazo[1,2-a]pyridines with a variety of aryl halides or triflates has been reported. This process afforded a range of biaryl compounds in excellent yields and showed high activity and broad scope.

Remote sensing of early-stage green tide in the Yellow Sea for floating-macroalgae collecting campaign

Xing, Qianguo,Wu, Lingling,Tian, Liqiao,Cui, Tingwei,Li, Lin,Kong, Fanzhou,Gao, Xuelu,Wu, Mengquan Elsevier 2018 Marine pollution bulletin Vol.133 No.-

<P><B>Abstract</B></P> <P>The world's largest green tide originated from the Jiangsu Shoal of the Yellow Sea was due to fast reproduction of floating green macroalgae (<I>Ulva prolifera</I>). It brought significant impacts on marine environment and ecosystem in the Yellow Sea. In this study, we examined the expansion of green tide from the Jiangsu Shoal during the period from 29 April to 25 June 2016. Using high-resolution satellite images, we revealed a declined growth rate during the northward drifting of early-stage green tide for the first time, i.e., the green tide had higher growth rate (up to 25% per day) in the turbid waters of the Jiangsu Shoal in May and a lower growth rate (low to 3% per day) in the relatively clear waters in the middle of the western Yellow Sea in June, which suggests that water clarity might not be the key factor controlling the growth rate of the floating macroalgae in the surface waters under natural conditions. The high growth rate led to shortened time windows for controlling the green tide by employing macroalgae collecting campaigns at the initial sites of the green tide, which was no more than 14 days in the 2016 case.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Using high-resolution satellite image for detecting early-stage green tide </LI> <LI> Found changing growth rate of green tide </LI> <LI> Assessed the countermeasure of collecting floating-macroalgae at the initial sites </LI> </UL> </P>

Catalytic ozonation of methylene blue in aqueous solution by loading transition metal(Co/Cu/Fe/Mn) on carbon

Fu-Huang Lin,Minghan Luo,Longzhe Cui,Gui-Ping Wu 한국화학공학회 2015 Korean Journal of Chemical Engineering Vol.32 No.2

Activated carbon(AC) was prepared using brewing yeast as a precursor by chemical activation; meanwhile,cobalt, copper, ferrum and manganese supported on activated carbon(Co/AC, Cu/AC, Fe/AC, Mn/AC) were preparedby adsorption-activation method. The characterizations of prepared AC, Co/AC, Cu/AC, Fe/AC, Mn/AC and theirperformance as ozonation catalysts were tested. The total BET surface areas of prepared AC, Co/AC, Cu/AC, Fe/AC,Mn/AC were found to be 957.7, 789.7, 485.3, 486.1 and 529.8m2/g. Absorption capacities of methylene blue (MB) weredetermined to 407.77, 206.52, 121.25, 123.01, 170.94mg/g, respectively. The presence of AC was advantageous for TOCreduction of MB compared with UV/O3 system, and metal Co, Cu, Fe, Mn play an important role in the degradationprocess. The greatest TOC removal efficiency was obtained in the presence of Co/AC.

Hydrothermal Synthesis, Crystal Structure of Four Novel Complexes Based on Thiabendazole Ligand

Wei, Shui-Qiang,Lin, Cui-Wu,Yin, Xian-Hong,Huang, Yue-Jiao,Luo, Pei-Qi Korean Chemical Society 2012 Bulletin of the Korean Chemical Society Vol.33 No.9

Four novel metal-organic complexes $[Cd_2(IP)_2(TBZ)_2(H_2O)_2]{\cdot}(H_2O)$ (1), $[Zn_4(IP)_4(TBZ)_4]{\cdot}2(H_2O)$ (2), $[Zn_2(BTC)(TBZ)_2(CO_2H)]$ (3), [Co(PDC)(TBZ)] (4) (where IP = isophthalate; TBZ = thiabendazole; BTC = 1,3,5-benzenetricarboxylate; PDC = pyridine-3,4-dicarboxylate) have been prepared and characterized by IR spectrum, elemental analysis, thermogravimetric analysis, and single-crystal X-ray diffraction. X-ray structure analysis reveals that 1, 2, and 3 are one-dimensional chain polymers, while 4 is a two-dimensional network polymer. The TBZ acts as a typical chelating ligand coordinated to the metal center in all complexes. The 1D chain architecture of 1 is constructed from isophthalates and cadmium atoms. A simultaneous presence of chelating, monodentate and bidentate coordination modes of IP ligands is observed in complex 2. In complex 3, the 16-membered rings are alternately arranged forming an infinite 1D double-chain structure. The 2D skeleton of 4 is formed by cobalt ions as nodes and PDC dianions as spacers, through coordination bonds. The hydrogen bonds and ${\pi}-{\pi}$ stacking play important roles in affecting the final structure where complexes 1 and 3 have 2D supramolecular networks, while complexes 2 and 4 have 3D supramolecular architectures.

Rhodium-Catalyzed Highly Regioselective C-H Arylation of Imidazo[1,2-a]pyridines with Aryl Halides and Triflates

Liu, Yi,He, Lin,Yin, Guoqiang,Wu, Guojie,Cui, Yingde Korean Chemical Society 2013 Bulletin of the Korean Chemical Society Vol.34 No.8

A convenient Rh-catalyzed C-H arylation of imidazo[1,2-a]pyridines with a variety of aryl halides or triflates has been reported. This process afforded a range of biaryl compounds in excellent yields and showed high activity and broad scope.