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기획주제(企劃主題) : 동아시아 한자(漢字),한자교육(漢字敎育)의 현황(現況)과 과제(課題); 基於漢字構形學的對外漢字?學
( Xing Jun Liu ) 한국한자한문교육학회 2013 漢字 漢文敎育 Vol.30 No.-
본고는 대외한자교육의 상황과 그 속에 존재하는 문제에 대해 분석하였다. 대외한자교육은 이제 바닥을 벗어나 교육의 효율성을 증가시켜야 하며, 이 때 한자구형학의 이론과 방법은 외래 학습자의 상황별 채택과 다양화, 즉 현대 과학정보기술을 이용하여 다양한 방법으로 중국으로 온 학생들에게 한자의 형태와 구조의 의도, 구건 조합의 방식과 고금자의의 동이(同異) 등을 체감하게 하고 이를 통해대외한자교육의 좋은 모범으로서 새로운 교육모델과 교육 방법을 제시해 줄 것으로 생각한다. 동시에 한자와 중국어 어휘의 의미, 한자와 중국 문화의 밀접한 관계를 이해하도록 해야 한다. This paper analyze the current status and existing problems of teaching Chinese as a foreign language(TCFL). New teaching methods based on the theory and methodology of Chinese morphemic will drive TCFL out of its downturn. It is more efficient to teach foreign students based on their own situation and the features of Chinese characters. With modern technologies, we can introduce foreign students the shape, purpose of construction and combination of Chinese characters, even the relations of Chinese characters and Chinese culture.
바인더젯 3D 프린팅을 위한 TiO<sub>2</sub> 입자를 함유한 시멘트 기반 재료의 기계적 성능 및 광촉매 특성 분석
유준성 ( Liu Jun-xing ),리패기 ( Li Pei-qi ),배성철 ( Bae Sung-chul ) 한국건축시공학회 2023 한국건축시공학회 학술발표대회 논문집 Vol.23 No.2
The development of advanced 3D printing technologies has opened up new opportunities for customized digital designs in the construction industry. Using nano- and micro-scale additives is expected to improve the performance of cement-based materials in 3D printing. TiO<sub>2</sub> particles have been widely used as reinforcing additives in cement-based materials. Therefore, this study aims to investigate the application of cement-based materials containing multi-size TiO<sub>2</sub> particles in binder jet 3D printing and the effect of different-size TiO<sub>2</sub> particles on the performance of printed samples. TiO<sub>2</sub> particles exhibit an excellent filling effect, which increases the density of the printed samples and promotes hydration, thereby improving the compressive strength of the samples. In addition, larger TiO<sub>2</sub> particles exert more pronounced filling and photocatalytic effects on the resulting samples.
TiO<sub>2</sub> 나노 튜브 함유 된 시멘트 페이스트의 기계적 물성 및 광촉매 성능 평가
유준성 ( Liu Jun-xing ),리패기 ( Li Pei-qi ),배성철 ( Bae Sung-chul ) 한국구조물진단유지관리공학회 2021 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.25 No.1
With the development of nano-enhancement technology and the increasing importance of environmental issues, cementitious materials with good mechanical and photocatalytic properties through the introduction of TiO<sub>2</sub> nanomaterials have received wide attention. In this work, compressive strength, splitting tensile strength, and degradation of methylene blue solution were used as parameters to evaluate the effect of TiO<sub>2</sub> nanotubes on the mechanical properties and photocatalytic performance of hardened cement paste, respectively. According to the results, after 28 days of curing, the compressive strength and splitting strength of the hardened cement paste increased by 9% and 26%, respectively, at the optimum content (0.5 wt%) of TiO<sub>2</sub> nanotubes. Moreover, TiO<sub>2</sub> nanotubes showed a better photocatalytic effect compared to TiO<sub>2</sub> nanoparticles.
TiO<sub>2</sub> 입자의 사이즈가 바인더젯 3D 프린팅 시멘트계 재료의 특성에 미치는 영향
유준성 ( Liu Jun-xing ),리패기 ( Li Pei-qi ),배성철 ( Bae Sung-chul ) 한국건축시공학회 2022 한국건축시공학회 학술발표대회 논문집 Vol.22 No.1
With the development of nano-reinforcement technology, TiO<sub>2</sub> nanomaterials have received widespread attention as one of the additives without pozzolanic reaction, which can be used to improve the mechanical properties of cement-based materials. Meanwhile, with the development of additive manufacturing technology or known as 3D printing technology, its application in the construction field has also got noticed. Therefore, in this work, the effect of three sizes of TiO<sub>2</sub> on the compressive strength of hardened cement-based materials fabricated by binder jetting 3d printing was evaluated. According to the results, the TiO<sub>2</sub> particles with larger sizes can provide better reinforcement to the hardened cement due to its more significant filling effect.
TiO<sub>2</sub> 입자 크기 및 구조가 시멘트 페이스트 광촉매 효과에 미치는 영향
유준성 ( Liu Jun-xing ),서형원 ( Suh Heong-won ),배성철 ( Bae Sung-chul ) 한국건축시공학회 2020 한국건축시공학회 학술발표대회 논문집 Vol.20 No.2
With the increasing importance of environmental issues, the cementitious materials with self-cleaning or photocatalytic properties by introducing TiO<sub>2</sub> materials have been gaining a lot of attention. In this work, the influence of TiO<sub>2</sub> particle size and structure on its photocatalytic effect in cement paste was investigated. The degradation of methylene blue solution was used as the parameter for evaluating the photocatalytic effect of micro-TiO<sub>2</sub> (m-TiO<sub>2</sub>), nano-TiO<sub>2</sub> (n-TiO<sub>2</sub>), and TiO<sub>2</sub> nanotube (TNT). Moreover, the effect of these three TiO<sub>2</sub> materials on the cement hydration products was characterized by X-ray diffraction (XRD) and thermgravimetric analysis (TG). According to the results, it can be found that all of the TiO<sub>2</sub> materials promoted the formation of hydration products, especially TNT. On the other hand, the m-TiO<sub>2</sub> exhibited a better photocatalytic effect compared to other materials.
양생기간이 TiO<sub>2</sub> 나노튜브 보강 시멘트 페이스트의 광촉매 효과에 미치는 영향
유준성 ( Liu¸ Jun-xing ),진다형 ( Jin¸ Da-hyung ),배성철 ( Bae¸ Sung-chul ) 한국건축시공학회 2021 한국건축시공학회 학술발표대회 논문집 Vol.21 No.2
With the development of nano-reinforcement technology and the increasing concern for environmental issues, TiO<sub>2</sub> nanomaterials have received wide attention as an additive besides carbon nanomaterials that can be used to enhance the mechanical properties of cement-based materials. Also, TiO<sub>2</sub>-based materials can allow cement-baned materials with photocatalytic capability, providing a potentially effective approach to reduce environmental problems. In this work, compressive strength, splitting tensile strength, and degradation of methylene blue solution were used as target to assess the effect of TiO<sub>2</sub> nanotubes on the mechanical strength and photocatalytic effect of hardened cement paste at different curing time. According to the strength results, the optimum amount of TiO<sub>2</sub> was identified as 0.5% of the weight of cement. Meanwhile, the TiO<sub>2</sub> nanotubes-reinforced specimen exhibited better photocatalytic effect in the early stage of curing.
Zhang, Chun-Xing,Liang, Long,Zhang, Bin,Chen, Wen-Bo,Liu, Hong-Jun,Liu, Chun-Ling,Zhou, Zheng-Gen,Liang, Chang-Hong,Zhang, Shui-Xing Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.8
Background: This study was conducted to analyze positron emission tomography (PET) / computed tomography (CT) and magnetic resonance imaging (MRI) performance with oropharyngeal non-Hodgkin's lymphoma (ONHL).Materials and Methods: The complete image data of 30 ONHL cases were analyzed, all patients were performed PET / CT and MRI examination before the treatment, with the time interval of these two inspections not exceeding 14 days. The distribution, morphology, MRI signal characteristics, enhancement feature, standardized uptake value (SUV) max value and lymph node metastasis way of the lesions were analyzed. Results: Among the 30 cases, 23 cases were derived from the B-cell (76.7%), 5 cases were derived from the peripheral T cells (16.7%) and 2 cases were derived from the NK/T cells (6.7%). 19 cases exhibited the palatine tonsil involvement (63.3%). As for the lesion appearance, 10 cases appeared as mass, 8 cases were the diffused type and 12 cases were the mixed type. 25 cases exhibited the SUVmax value of PET / CT primary lesions as 11 or more (83.3%). MRI showed that all patients exhibited various degrees of parapharyngeal side-compressed narrowing, but MRI still exhibited the high-signal fat, and the oropharyngeal mucosa was intact. 25 cases were associated with the neck lymph node metastasis, among who 22 cases had no necrosis in the metastatic lymph nodes, while the rest 3 cases exhibited the central necrosis in the metastatic lymph nodes. Conclusions: PET / CT and MRI have important value in diagnosing and determining the lesion extent of ONHL.
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.
Chemokine Signaling Pathway Involved in CCL2 Expression in Patients with Rheumatoid Arthritis
Lin Zhang,Changyi Li,Min Yu,Jiayin Deng,Xing Lv,Jun Liu,Yu Xiao,Wenjie Yang,Yuru Zhang 연세대학교의과대학 2015 Yonsei medical journal Vol.56 No.4
Purpose: Rheumatoid arthritis (RA) is an inflammatory joint disorder, the progressionof which leads to the destruction of cartilage and bone. Chemokines are involvedin RA pathogenesis. In this study, we investigated the chemokine signaling pathway associated with CCL2 in peripheral blood (PB) and synovial tissues (ST) of RA patients based on our previous work about chemokine signaling pathway involvedin the activation of CCL2 production in collagen-induced arthritis rat ST. Materials and Methods: Total RNA was isolated from PB leukocytes and synoviumof the knee joint in both RA patients and control populations. Real-time polymerasechain reaction was used to determine CCL4, CCR5, c-Jun, c-Fos, and CCL2 expressions. Serum level of CCL2 was assessed by enzyme-linked immunosorbent assay, and the production of CCL2 in ST was analyzed immunohistochemically. Results: The expressions of CCL4, CCR5, c-Jun, c-Fos, and CCL2 messenger RNA in RA patients were significantly higher than those in healthy controls, both in ST and on PB leukocyte. Serum CCL2 levels were elevated in RA patients. Histological examination of rheumatoid joints revealed extensive CCL2 expression in RA ST. Conclusion: CCL2, CCL4, c-Jun, c-Fos, and CCR5 may play an important role in the recruitment of PB leukocytes into the RA joints. These data provide evidence that the chemokine signaling pathway is involved in CCL2 expression in RA patient tissues, which may contribute to chronic inflammation associated with RA. Targetingthis signaling pathway may provide a novel therapeutic avenue in RA.