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Ce Su,Shaodan Zhao,Hongbo Zhang,Kaishan Chang 한국화학공학회 2017 Korean Journal of Chemical Engineering Vol.34 No.3
Much attention has been increasingly focused on the applications of noble metal nanoparticles (NPs) for the catalytic degradation of various dyes and pigments in industrial wastewater. We have demonstrated that Pd NPs/ Fe3O4-PEI-RGO nanohybrids exhibit high catalytic activity and excellent durability in reductive degradation of MO, R6G, RB. Specific surface area was successfully prepared by simultaneous reduction of Pd(OAc)2 chelating to PEI grafted graphene oxide nanosheets modified with Fe3O4. The as-prepared Pd NPs/Fe3O4-PEI-RGO nanohybrids were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, high-resolution TEM and energy dispersive X-ray spectroscopy, and UV-lambda 800 spectrophotometer, respectively. The catalytic activity of Pd NPs/Fe3O4-PEI-RGO nanohybrids to the degradation of MO, R6G, RB with NaBH4 was tracked by UV-visible spectroscopy. It was clearly demonstrated that Pd NPs/Fe3O4-PEI-RGO nanohybrids exhibited high catalytic activity toward the degradation of dyes and pigments, which could be relevant to the high surface areas of Pd NPs and synergistic effect on transfer of electrons between reduced graphene oxide (RGO), PEI and Pd NPs. Notably, Pd NPs/Fe3O4-PEI-RGO nanohybrids were easily separated and recycled thirteen times without obvious decrease in system. Convincingly, Pd NPs/Fe3O4-PEI-RGO nanohybrids would be a promising catalyst for treating industrial wastewater.
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Xie, Cong-Ying,Jin, Xian-Ce,Deng, Xia,Xue, Sheng-Liu,Jing, Zhao,Su, Hua-Fang,Wu, Shi-Xiu Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.12
Objectives: To evaluate the feasibility and efficacy of simultaneous accelerated radiation therapy (SMART) and concurrent weekly paclitaxel in the treatment of locally advanced nasopharyngeal carcinoma. Methods: Forty-one patients with pathologically confirmed nasopharyngeal carcinoma were treated by SMART with concurrent weekly paclitaxel. Daily fraction doses of 2.5 Gy and 2.0 Gy were prescribed to the gross tumor volume (GTV) and clinical target volume (CTV) to a total dose of 70 Gy and 56 Gy, respectively. Paclitaxel of $45mg/m^2$ was administered concurrently with radiation therapy every week. Adjuvant chemotherapy was given four weeks after the completion of the radiotherapy (RT) if the tumor demonstrated only a partial response (PR). Results: All patients completed the radiotherapy (RT) course. Adjuvant chemotherapy was administered to 12 patients due to PR. The CR (complete remission) rate was 82.9% three months after RT. Thirty-nine (95.1%) patients completed the concurrent weekly chemotherapy with paclitaxel, and two patients skipped their sixth course. Seven patients had a 15% dosage reduction at the fifth and sixth course due to grade 3 mucositis. The median follow-up was 30 (range, 14-42) months. The three-year overall survival (OS), metastases-free survival (MFS), and local control rates were 77.0%, 64.4%, and 97.6%, respectively. No correlation between survival rate and T or N stage was observed. Grade 3 acute mucositis and xerostomia were present in 17.1% and 7.1%, respectively. Conclusion: SMART with concurrent weekly paclitaxel is a potentially effective and toxicity tolerable approach in the treatment of locally advanced NPC.
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남원석(Won-Seok Nam),김수경(Su-Kyoung Kim),백세나(Ce-Na Baik) 서울연구원 2016 서울연구원 정책과제연구보고서 Vol.- No.-
Since 2012, the Seoul Metropolitan Government has allocated budget to 10 Housing Support Centres. The centres have been assessing the housing issues for low-income households and offering rental subsidy to those in need. Now that the Central Government and Seoul Housing & Communities Corporation (SH Corporation) are participating in Housing Support Centre’s management, they expect to further fuel the growth of the centre’s role and activities. In order to achieve this advancement, all the Housing Support Centres should improve their consulting skills and the quality of their service; therefore, this paper describes the Housing Support Centre’s evaluation system. The evaluation system presents the evaluation categories, rating scales, processes, and how to use the assessment results. First, the evaluation category is divided into 34 factors based on its inputs, activities, outputs, and outcomes. Each factor is evaluated by using a 4-point rating scale, such as poor, fair, average, and good. With use of these evaluation factors and rating scale, each centre first conducts an evaluation by itself. After this step, professional evaluators review the outcomes and scrutinise the documents which can confirm the self-evaluation. Finally, the evaluation team pinpoints each centre’s problems and offers the centres an opportunity to assess the issues. Using the above processes, we tried to evaluate the 10 current Housing Support Centres in Seoul and we found that the results varied among centres. For this reason, the evaluation team should play an important role in proposing how each centre can maintain consistency in service quality. Lastly, this paper recommends 7 necessary factors to continue the application of the evaluation system: continuous improvements of the evaluation system, housing support centre’s activity guidelines, professional electronic data system, building a website, increasing the number of centres, hiring more staff, and cooperative public-private partnership. All of these factors will help the housing support centres to perform better management in the future.
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Impact of faculty development programs for positive behavioural changes among teachers: a case study
Shuh Shing Lee,Chaoyan Dong,Su Ping Yeo,Matthew CE Gwee,Dujeepa D. Samarasekera 한국의학교육학회 2018 Korean journal of medical education Vol.30 No.1
Purpose: Faculty development (FD) is essential to prepare faculty members to become effective teachers to meet the challenges in medical education. Despite the growth of FD programmes, most evaluations were often conducted using short questionnaires to assess participants’ satisfaction immediately after they attended a programme. Consequently, there were calls for more rigorous evaluations based on observed changes in participants’ behaviours. Hence, this study aims to explore how the FD workshops run by the Centre for Medical Education, Yong Loo Lin School of Medicine, National University of Singapore have impacted behavioural changes in the educators. Methods: We followed up with the educators at least half a year after they have attended the workshops. With limited literature as reference, we initiated a small-scale case-study research design involving semi-structured interviews with six educators which was triangulated with three focus group discussions with their students. This allowed us to explore behavioural changes among the educators as well as evaluate the feasibility of this research methodology. Results: We identified three emerging categories among the educators: ignorance to awareness, from intuition to confirmation and expansion, and from individualism to community of practice. Conclusion: Although FD have placed much emphasis on teaching and learning approaches, we found that the teacher-student interaction or human character components (passionate, willing to sacrifice, are open to feedback) in becoming a good educator are lacking in our FD workshops.
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