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Kim, Euna,Jung, Jihyeun,Hapsari, Gita,Kang, Seju,Kim, Kibeum,Yoon, Saerom,Lee, Miran,Han, Mooyoung,Choi, Yongju,Choe, Jong Kwon Elsevier 2018 Building and environment Vol.146 No.-
<P><B>Abstract</B></P> <P>Green roofs have become popular in urban areas as a solution to restore green space in cities and mitigate urban problems. In this study, the economic and environmental sustainability of using green roofs for rooftop agriculture (i.e., roof farms) is evaluated and compared with that of using green roofs as extensive gardens of flowers and non-edible plants with low maintenance (i.e., roof gardens) based on these two green roofs that were installed and operated for over five years in a university building in Seoul, Korea. The life cycle cost analysis results show that the total cost of the roof garden is 38.9% lower than the flat roof whereas the total cost of the roof farm is 68.3% higher than the roof garden. The environmental impacts of both the roof garden and farm were 2.4–35 times as high as those of the flat roof. The need to frequently replenish the lightweight soil over its lifetime was the main contributor to both the economic cost and environmental impacts of the roof farm, suggesting a need to develop cost-effective and environmentally benign lightweight soil materials. A survey was also conducted to investigate public preferences and perceptions of these two green roof options. Over 80% of the respondents expressed the necessity for green roofs in urban areas, and 79.3% preferred roof gardens over farms. Our results show that roof farms have several merits in urban areas, especially social benefits, but future research should focus on improving their economic and environmental sustainability.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Use of green roofs as rooftop farm versus extensive garden is evaluated. </LI> <LI> The life cycle cost of roof garden is lower than flat roof, but roof farm was higher. </LI> <LI> Lightweight soil is the main economic and environmental contributor of roof farm. </LI> <LI> A survey study showed that 79.3% of respondents preferred roof gardens over farms. </LI> <LI> Economic and environmental sustainability of roof farms should be further improved. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Kang, Seju,Kim, Geunyoung,Choe, Jong Kwon,Choi, Yongju Elsevier 2019 Journal of hazardous materials Vol.371 No.-
<P><B>Abstract</B></P> <P>The present study aimed to investigate the relationship between the desorption and biodegradability of phenanthrene sorbed to biochars by employing two approaches that may change the desorption and biodegradability: the use of powdered biochars and nonionic surfactants. Biochars derived from two feedstocks (rice husk and sewage sludge; pyrolyzed at 500 °C but showing different aromaticity) were used. When the biochars were powdered to obtain particles <250 μm the mass fractions of the desorbed phenanthrene at ∼80 days ( <SUB> f d e s </SUB> ) increased from 0.303 to 0.431 for sewage sludge biochars. On the other hand, <SUB> f d e s </SUB> for rice husk biochars remained virtually unchanged (from 0.264 to 0.255). The mass fractions of the biodegraded phenanthrene ( <SUB> f b i o </SUB> ) increased from 0.191 to 0.306 for rice husk biochars and from 0.077 to 0.168 for sewage sludge biochars. When a nonionic surfactant was added at the sub-critical micelle concentration (CMC), <SUB> f b i o </SUB> increased by 4.7 times and 8.3 times for rice husk and sewage sludge biochars. For both types of biochars, <SUB> f b i o </SUB> was larger than <SUB> f d e s </SUB> when the surfactant was added. This study suggests that the addition of nonionic surfactants can be considered if the inhibition of microbial activity is of concern in soils and sediments treated by biochar.</P> <P><B>Highlights</B></P> <P> <UL> <LI> More phenanthrene desorbs from biochar by powdering biochars or adding surfactants. </LI> <LI> Powdered biochars increases phenanthrene desorption by reducing diffusion length. </LI> <LI> Surfactants use at sub-CMC significantly enhances phenanthrene biodegradation. </LI> <LI> With surfactant, phenanthrene biodegradation has exceeded its desorption. </LI> <LI> Surfactants may facilitate microorganisms to access non-aqueous phase phenanthrene. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
백출, 어성초, 금은화, 황금, 황련과 Metformin의 병용 투여 시 항산화 효과 및 전지방세포 분화 억제 효과
장세주 ( Seju Chang ),한경선 ( Kyungsun Han ),왕경화 ( Jing Hua Wang ),채희성 ( Hee Sung Chae ),최영희 ( Yong Hee Choi ),진영원 ( Young Won Chin ),최한석 ( Han Seok Choi ),김호준 ( Hojun Kim ) 한방비만학회 2015 한방비만학회지 Vol.15 No.1
Objectives: This study was to investigate the antioxiative capacity, antiobesity effects of Atractylodes Rhizoma Alba, Houttuyniae Herba, Lonicerae Flos, Agrobacterium Rhizogenes, and Coptidis Rhizoma on Raw 264.7 and 3T3-L1 cell lines. Methods: Three different types of herb extracts (A. Rhizoma Alba, H. Herba, L. Flos, A. Rhizogenes, and C. Rhizoma; water 100%, ethanol 30%, ethanol 100%) were used in this study. Total polyphenol compound, 1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging, reactive oxygen species (ROS) activity, NO production and cell proliferation were measured. Results: Total polyphenol compound measurement of L. Flos, A. Rhizogenes, and C. Rhizoma extracts were higher than A. Rhizoma Alba, H. Herba. DPPH radical scavenging activity, ROS activity and NO production of A. Rhizogenes, C. Rhizoma extracts were lower than L. Flos, A. Rhizoma, and H. Herba. Conclusions: Metformin and A. Rhizogenes, C. Rhizoma, A. Rhizoma Alba, and L. Flos extracts combination groups showed synergistic effect on adipocyte differentiation inhibition and antioxidative activity.
Park, Seju,Jeong, Hojin,Kim, Byeonggeun International Academy of Physical Therapy Research 2021 Journal of International Academy of Physical Ther Vol.12 No.1
Background: Vibration stimulation has emerged as a treatment tool to help reduce spasticity during physical therapy. Spasticity includes problems of reduced range of motion (ROM) and stiffness. However, the benefits of vibration rolling (VR) on interventions for stroke patients are unclear. Objectives: This study aimed to investigate the effect of VR intervention on the ankle ROM and ankle stiffness in stroke patients. Design: A randomized crossover study. Methods: Seven stroke patients completed two test sessions (one VR and one non-VR [NVR]) in a randomized order, with 48 hours of rest between each session. Participants completed intervention and its measurements on the same day. The measurements included ankle dorsiflexion and plantarflexion ROM and stiffness of ankle muscles, including the tibialis anterior, medial, and lateral gastrocnemius muscle. Results: After VR, ankle dorsiflexion ROM, lateral gastrocnemius stiffness, and medial gastrocnemius stiffness improved significantly (all P<.05). After NVR, only the lateral gastrocnemius stiffness improved significantly (P<.05). Furthermore, in the cases of changed values for ankle dorsiflexion ROM and lateral gastrocnemius stiffness were compared within groups, VR showed a more significant difference than NVR (P<.05) Conclusion: VR improved ankle ROM and muscle stiffness. Therefore, we suggest that practitioners need to consider VR as an intervention to improve dorsiflexion ROM and gastrocnemius stiffness in stroke patients.
Chibok Park,Seju Park,Byeonggeun Kim 국제물리치료연구학회 2020 Journal of International Academy of Physical Ther Vol.11 No.2
Background: Ankle sprain in the Lead Leg Side (ALLS) is common in fencing athletes, and studies comparing the ankle range of motion (ROM) and strength of both legs are insufficient. Objectvies: To compare the ankle ROM and hip strength between two legs in fencing athletes who has ankle instability in the lead leg side. Design: Cross-sectional design. Methods: Seven fencing athletes with ankle instability participated in this study, and they randomly assigned into ankle in the Lead Leg Side (ALLS) and ankle in the Rear Leg Side (ARLS). Instability was determined by the Cumberland Ankle Instability Tool (CAIT), and then joint ROM and hip muscle strength were measured. Results: There were significant differences in dorsiflexion ROM, hip strength (extension and abduction) between the ALLS with ankle instability and ARLS (P<.05). Conclusion: This study suggests that the ankle ROM and hip muscle strength of ARLS are greater than ALLS in fencing athletes with ankle instability.
항생제 연관성 설사의 중의약 치료 효과에 대한 체계적 고찰
장세주,이명종,김호준,Chang, Seju,Lee, Myeong-Jong,Kim, Hojun 한방재활의학과학회 2017 한방재활의학과학회지 Vol.27 No.4
Objectives To summarize and evaluate the efficacy of traditional Chinese herbal medicine (TCHM) treatment for antibiotic associated diarrhea (AAD). Methods Eight electronic databases were searched from their inception to August 2017. Randomized controlled trials (RCTs) assessing the efficacy of TCHM treatment for AAD were included. The risk of bias was assessed using the Cochrane risk of bias assessment tool. Data analysis was performed using RevMan software version 5.3. Results Seventeen RCTs involving 1138 patients with AAD were included for qualitative synthesis. TCHM treatment improved total effective rate (TER). However, the results that TER in experimental group was significantly higher than in control group were different between the included studies. TCHM enema treatment improved TER, but not significantly higher than control group. The most frequently used herbal formulas were Gamiwekwanjeon, Gamiinsampaedoksan, and Samryungbaekchulsan. The most frequently used TCHMs were Atractylodes macrocephala (Bai Zhu), Dioscorea batatas (Shan Yao). Within the studies documenting the adverse events, no serious adverse events associated with TCHM treatment were observed. Conclusions Evidence of TCHM treatment efficacy for AAD is encouraging, but not conclusive, because of the low methodological qualities, diversity of TCHM treatment prescriptions. Further well-designed RCTs with rigorous randomization and blinding method are needed to confirm these results.