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Hong-xia Lu,Man He,Yuan-yuan Liu,Jing-fei Guo,Li-wei Zhang,Deliang Chen,Hai-long Wang,Hong-liang Xu,Rui Zhang 한양대학교 세라믹연구소 2011 Journal of Ceramic Processing Research Vol.12 No.5
Glass-ceramic glazes have been prepared successfully via crystallization from blast-furnace slag (BFS), fly ash (FA) fluxed with potash feldspar and borax. The crystalline behavior of glass-ceramic glazes was investigated using differential thermal analysis and thermogravimetric analysis (DTA/TG), X-ray diffraction (XRD) and scanning electron microscopy (SEM). Results revealed that the major crystalline phases are anorthite (CaAl2Si2O8) and akermanite (Ca2MgSi2O7) and crystalline phases disperse well in glassy phases with a uniform size of 1 μm. Glass-ceramic glazes possess low density, low water absorption,perfect stain resistance, acid resistance and alkali resistance. The thermal expansion coefficient of glass-ceramic glazes is steady up to 800 oC with an average value of 7.2 × 10−6 /K. Final results suggest that BFS and FA have potential to be vitrified into economically and environmentally low-cost glass-ceramic glaze materials.
Wei, Wei-Hong,Cai, Xiu-Yu,Xu, Tao,Zhang, Guo-Yi,Wu, Yong-Feng,Feng, Wei-Neng,Lin, Li,Deng, Yan-Ming,Lu, Qiu-Xia,Huang, Zhe-Li Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.3
Background and Purpose: Cisplatin is the most common chemotherapeutic agent for loco-regionally advanced nasopharyngeal carcinoma (NPC); however, toxicity is a limiting factor for some patients. We retrospectively compared the efficacy and toxicity of weekly docetaxel-based and cisplatin-based concurrent chemoradiotherapy in loco-regionally advanced NPC. Methods and Materials: Eighty-four patients with Stage III and IVA-B NPCs, treated between 2007 and 2008, were retrospectively analyzed. Thirty received weekly docetaxel-based concurrent chemotherapy, and 43 were given weekly cisplatin-based concurrent chemotherapy. Radiotherapy was administered using a conventional technique (seven weeks, 2.0 Gy per fraction, total dose 70-74 Gy) with 6-8 Gy boosts for some patients with locally advanced disease. Results: Median follow-up time was 42.3 months (range, 8.6-50.8 months). There were no significant differences in the 3-year loco-regional failure-free survival (85.6% vs. 92.3%; p=0.264), distant failure-free survival (87.0% vs. 92.5%; p=0.171), progression-free survival (85.7% vs. 88.4%; p=0.411) or overall survival (86.5% vs. 92.5%, p=0.298) of patients treated concurrently with docetaxel or cisplatin. Severe toxicity was not common in either group. Conclusions: Weekly docetaxel-based concurrent chemoradiotherapy is potentially effective and has a tolerable toxicity; however, further investigations are required to determine if docetaxel is superior to cisplatin for advanced stage NPC.
Wei-Min Liu,Zhen-Hong Liu,Wei-Wen Cheong,Lu-Yi Teo Priscilla,Yongxin Li,Koichi Narasaka 대한화학회 2010 Bulletin of the Korean Chemical Society Vol.31 No.3
A new synthetic method of 2,5-disubstituted pyrrolidines is developed by the cyclization of unsaturated N-benzoyloxysulfonamides by (CuOTf)2·C6H6 in refluxing dichloroethane. Various N-4- and N-5-alkenyl and alkynyl N-benzoyloxysulfonamides are cyclized to give pyrrolidines. The cyclization proceeds via addition of sulfonamidoyl radicals to intramolecular unsaturated bonds or allylic hydrogen abstraction with the radical intermediates.
Wei-hua Yin,Yan Zhang,Xiang-nan Li,Hong-yue Wang,Yun-qiang An,Yang Sun,Zhi-hui Hou,Yang Gao,Bin Lu,Zhe Zheng 대한영상의학회 2020 Korean Journal of Radiology Vol.21 No.2
Objective: We sought to distinguish lipid plaques using a CT quantitative pixel density histogram, based on the pathological diagnosis of lipid cores as the gold standard. Materials and Methods: Eight patients awaiting heart transplantation due to end-stage coronary heart disease underwent coronary CT angiography (CCTA) spectroscopy prior to heart transplantation; coronary artery pathological analysis was performed for all patients. Lipid-core plaques were defined pathologically as manifesting a lipid core diameter > 200 μm, a circumference > 60 degrees, and a cap thickness < 450 μm. The percentage distributions of CT pixel attenuation ≤ 20, 30, 40, and 50 HU were calculated using quantitative histogram analysis. Results: A total of 271 transverse sections were co-registered between CCTA and pathological analysis. Overall, 26 lipid cores and 16 fibrous plaques were identified by pathological analysis. There was no significant difference in median CT attenuation between the lipid and fibrous plaques (51 HU [interquartile range, 46–63] vs. 57 HU [interquartile range, 50–64], p = 0.659). The median percentage of CT pixel attenuation ≤ 30 HU accounted for 11% (5–17) of lipid-core plaques and 0% (0–2) of fibrous plaques (p < 0.001). The sensitivity and specificity of the method for diagnosing lipid plaques by the average CT pixel attenuation ≤ 30 HU were 80.8% and 87.5%, respectively. The area under the receiver operator characteristics curve was 0.898 (95% confidence interval: 0.765–0.970; 3.0% was the best cut-off value). The diagnostic performance was significantly higher than those of the average pixel CT attenuation percentages ≤ 20, 40, and 50 HU and the mean CT attenuation (p < 0.05). Conclusion: In in vivo conditions, with the pathological lipid core as the gold standard, quantification of the percentage of average CT pixel attenuation ≤ 30 HU in the histogram can be useful for accurate identification of lipid plaques.
Hong-tao Chang,Xiu-yuan He,Yu-Feng Liu,Lu Chen,Quan-hai Guo,Qiu-ying Yu,Jun Zhao,Xin-wei Wang,Xia Yang,Chuan-qing Wang 대한수의학회 2014 Journal of Veterinary Science Vol.15 No.3
A recombinant replication-defective adenovirus expressingthe major epitopes of porcine circovirus-2 (PCV-2) capsidprotein (rAd/Cap/518) was previously constructed and shownto induce mucosal immunity in mice following intranasaldelivery. In the present study, immune responses induced byintranasal immunization with a combination of rAd/Cap/518and cytosine-phosphate-guanosine oligodeoxynucleotides(CpG ODN) were evaluated in mice. The levels ofPCV-2-specific IgG in serum and IgA in saliva, lung, andintestinal fluids were significantly higher in the groupimmunized with rAd/Cap/518 and CpG ODN than animalsimmunized with rAd/Cap/518 alone. The frequencies ofIL-2-secreting CD4+ T cells and IFN-γ-producing CD8+ T cellswere significantly higher in the combined immunizationgroup than mice immunized with rAd/Cap/518 alone. Thefrequencies of CD3+, CD3+CD4+CD8−, and CD3+CD4−CD8+T cells in the combined immunization group were similar tothat treated with CpG ODN alone, but significantly higherthan mice that did not receive CpG ODN. PCV-2 load afterchallenge in the combined immunization group wassignificantly lower than that in the phosphate-buffered salineplacebo group and approximately 7-fold lower in the grouptreated with CpG ODN alone. These results indicate thatrAd/Cap/518 combined with CpG ODN can enhance systemicand local mucosal immunity in mice, and represent apromising synergetic mucosal vaccine against PCV-2.
RESEARCH PAPERS : Effect of Impeller Blade Number on KLa in Mechanically Agitated Vessels
(Wei Ming Lu),(Hong Zhang Wu),(Cheng Ying Chou) 한국화학공학회 1999 Korean Journal of Chemical Engineering Vol.16 No.5
Effects of impeller blade number on gas dispersion and mass transfer rate were thoroughly investigated for mechanically agitated vessels equipped with 2-, 4-, 6- and 8-straight blades disk turbine impellers. The results show that under the same rotational speed, the impeller with more blades always can disperse gas more effectively, which induces a higher value of $lt;K_La$gt;. However, with the same total power consumption, the 4-blade impeller can obtain a higher $lt;K_La$gt; value than the 6- and 8-blade impellers under a lower gassing rate condition (Q-g$lt;0.5vvm), but if Q_g) exceeds 0.5vvm, the 6-blade impeller will perform better than the 4- and 8- blade impellers. To examine the results obtained from the single impeller systems, the same approach is applied to measure $lt;K_La$gt; values for the triple stage 6-blade impeller system (3×6) and quadruple stage 4-blade impeller system (4×4). From the experimental results, it can be found that the 4×4 system gives higher $lt;K_La$gt; value than the 3×6 system under gas completely dispersed conditions. By correlating $lt;K_La$gt; with n_b, N and V_s, the following correlation can be given as: $lt;K_La$gt; = 0.00119n^(0.62)_bN^(1.56)V^(0.4)_s $lt;K_La$gt; = 0.0297n^(0.1)_b(P_s/V)^(0.34)V^(0.48)_s These two correlations can also be used to evaluate the mass transfer coefficient of each impeller region for the multiple impeller systems and the deviation is always less than 10%.
Hong-Qing Cui,Zhi-Cheng Ye,Wei Hu,XiaoWen Lin,T.C. Chung,Tean-Sen Jen,Yan-Qing Lu 한국정보디스플레이학회 2011 Journal of information display Vol.12 No.3
Optically isotropic liquid crystal (LC) mixture such as blue-phase LC and nanostructured LC composites exhibit the advantages of fast response time, high contrast ratio and wide-viewing angle due to the induced birefringence along the horizontal electric field. Utilizing this mixture, a novel single cell gap in-plane switching-type polymer-stabilized blue-phase transflective liquid crystal display by embedding the nanowire grid polarizer as a polarization-dependent reflective polarizer in the R region is proposed. This device can be used as a normal black mode without any quarter-wave plate or patterned in-cell phase retarder. Moreover, the transmittance is identical to the reflectance so that it will be suitable for single gamma driving. Detailed electro-optic performances, such as voltage-dependent light efficiency and viewing angle of the proposed device configuration, are investigated.