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Sulphonated Reduced Graphene Oxide: A High Performance Anode Material for Lithium Ion Battery
Haibo Li,Rui Niu,Sen Liang,Yulong Ma,Min Luo,Jin Li,Lijun He 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2015 NANO Vol.10 No.4
In this work, the sulfonated reduced graphene oxide (SRGO) was synthesized and proposed as an enhanced anode material for lithium ion battery (LIB). The result shows that the SRGO has an improved battery performance (i.e., ~341.7 mAh/g and ~190.6 mAh/g corresponds to SRGO and RGO at the 100th cycle with a current density of 200 mA/g) and superior cycling stability compared with pristine reduced graphene oxide (RGO). These are attributed to the improved specific surface area (448.35 m2 /g) and conductivity (2.5 x 10-4 S/m). Further, the SRGO exhibits good rate capability and excellent energy density at various current densities ranging from 50 mAh/g to 2000 mAh/g, suggesting that SRGO could be a promising anode material for high capacity LIB.
축구선수들의 경기력 향상을 위한 트레이닝 방법 문헌고찰
이서민 ( Rui-min Li ),조영현 ( Yeong-hyun Cho ),유주인 ( Joo-in Yu ),유붕 ( Peng Liu ),사공혁 ( Hyuk Sakong ),박영준 ( Young-jun Park ),한누리 ( Nu-ri Han ),서태범 ( Tae-beom Seo ) 제주대학교 해양스포츠센터 2020 해양스포츠연구 Vol.10 No.2
본 연구의 목적은 축구선수의 경기력 향상을 위한 트레이닝 방법을 확인하고자 하는데 있다. 이를 위해 온라인(Online) 상에서 Pubmed, Riss, Kiss, Google scholar에서 2000~2020년 사이의 기간을 설정하고, 용어는 Training, Performance, soccer player, core training 그리고 Plyometric training을 사용하여 문헌 조사를 실시하였다. 축구선수의 경기력관련 체력요인 향상을 위한 훈련 프로그램의 효과를 보고한 20개의 논문을 선정하였고, 플라이오메트릭과 코어트레이닝 각각 5개씩 10개의 논문이 최종 채택되었다. 채택한 문헌을 기반으로 내용을 정리한 결과 플라이오메트릭과 코어트레이닝은 근력, 근지구력, 민첩성, 순발력, 허리와 무릎 등속성 근기능 및 유연성을 증가시키는 것으로 확인되었다. 따라서 플라이오메트릭과 코어트레이닝의 적용은 축구선수의 경기력 관련 체력을 향상시킨다는 중요한 정보를 제공한다. The purpose of this study is to identify a training method for improving soccer player's performance. To this end, the period between 2000 and 2020 was set in Pubmed, Riss, Kiss, and Google scholar on Online, and a literature survey was conducted using the terms Training, Performance, soccer player, core training and Plyometric training. Twenty academic journals were selected to report the effectiveness of training programs to improve the fitness factors related to the performance of soccer players, and ten papers were finally selected, five each for plyometric and core training. As a result of organizing the contents based on the adopted literature, it was confirmed that plyometric and core training increased muscle strength, muscular endurance, agility, power, waist and knee isokinetic muscle function and flexibility. Therefore, these results provide information that plyometric and core training may improve physical fitness related to the performance of soccer players.
Rui Yan,Jianbo Song,Zhifang Wu,Min Guo,Jianzhong Liu,Jianguo Li,Xinzhong Hao,Sijin Li 대한영상의학회 2015 Korean Journal of Radiology Vol.16 No.4
To determine the efficacy of 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) in the detection of radiation-induced myocardial damage in beagles by comparing two pre-scan preparation protocols as well as to determine the correlation between abnormal myocardial FDG uptake and pathological findings. The anterior myocardium of 12 beagles received radiotherapy locally with a single X-ray dose of 20 Gy. 18F-FDG cardiac PET/CT was performed at baseline and 3 months after radiation. Twelve beagles underwent two protocols before PET/CT: 12 hours of fasting (12H-F), 12H-F followed by a high-fat diet (F-HFD). Regions of interest were drawn on the irradiation and the non-irradiation fields to obtain their maximal standardized uptake values (SUVmax). Then the ratio of the SUV of the irradiation to the non-irradiation fields (INR) was computed. Histopathological changes were identified by light and electron microscopy. Using the 12H-F protocol, the average INRs were 1.18 ± 0.10 and 1.41 ± 0.18 before and after irradiation, respectively (p = 0.021). Using the F-HFD protocol, the average INRs were 0.99 ± 0.15 and 2.54 ± 0.43, respectively (p < 0.001). High FDG uptake in irradiation field was detected in 33.3% (4/12) of 12H-F protocol and 83.3% (10/12) of F-HFD protocol in visual analysis, respectively (p = 0.031). The pathology of the irradiated myocardium showed obvious perivascular fibrosis and changes in mitochondrial vacuoles. High FDG uptake in an irradiated field may be related with radiation-induced myocardial damage resulting from microvascular damage and mitochondrial injury. An F-HFD preparation protocol used before obtaining PET/CT can improve the sensitivity of the detection of cardiotoxicity associated with radiotherapy.
(Li Xiang Rui),(Young Min Park),(Jong Yong Choi),(Boo Sung Kim),(Guhung Jung) 대한내과학회 1998 The Korean Journal of Internal Medicine Vol.13 No.2
N/A Objectives:DNA polymerase (pol) of Hepatitis B virus (HBV) includes 3 different domains such as terminal protein (TP), reverse transcriptase (RT) and RNase H. Humoral immune responses to each of these proteins have not been well documented previously, although antibody to pol was detected in serum of patients with chronic hepatitis B. We have constructed TP (amino acids 1-182), RT (amino acids 346-685) and RNase H (amino acids 690-832). Methods:By ELISA using each protein expressed in E. coli as antigens, the corresponding antibodies were tested in serum from 40 patients with type B viral chronic liver diseases. (20 HBeAg-positive and 20 HBeAg-negative). As negative controls, sera from 3 healthy young men were used. With the mean values of the OD, which were tested 4 times per each test sample and 3 times per each control sample, we considered to be positive if the mean OD of each test sample is 2-fold or higher than that of controls. Results:Five of 40 sera (12.5%) contained one or two different antibodies detectable by this method: 4 of 20 HBeAg-positive sera (20%) and 1 of 20 HBeAg-negative sera (5%). Anti-TP, anti-RT and anti-RNase H antibodies were detected in 2.5% (1/40), 10% (4/40) and 7.5% (3/40), respectively. Among 4/20 HBeAg-positive ELISA-positive sera, anti-TP, anti-RT and anti-RNase H were positive in 5% (1/20), 20% (4/20) and 10% (2/20), respectively, while 1 HBeAg-negative ELISA-positive sera were positive only for anti-RNase H. Conclusions:These results suggest that the corresponding antibody responses to individual recombinant peptides derived from 3 domains of DNA polymerase may tend to be detected more frequently in HBeAg-positive sera than in HBeAg-negative sera from various patients with type B viral chronic liver diseases.
Rui Deng,Shi-min Wang,Tao Yin,Ting-hong Ye,Guo-bo Shen, Ling Li,Jing-yi Zhao,Ya-xiong Sang,Xiao-gang Duan,Yu-Quan Wei 한국유방암학회 2014 Journal of breast cancer Vol.17 No.1
Purpose: The universal organic solvent dimethyl sulfoxide (DMSO)can be used as a differentiation inducer of many cancer cells andhas been widely used as a solvent in laboratories. However, itseffects on breast cancer cells are not well understood. The aimof this study is to investigate the effect and associated mechanismsof DMSO on mouse breast cancer. Methods: We appliedDMSO to observe the effect on tumors in a mouse breast cancermodel. Tumor-associated macrophages (TAMs) were tested byflow cytometry. Ex vivo tumor microenvironment was imitated by4T1 cultured cell conditioned medium. Enzyme-linked immunosorbentassays were performed to detect interleukin (IL)-10 andIL-12 expression in medium. To investigate the cytotoxicity ofDMSO on TAMs, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazoliumbromide (MTT) assays were performed. Results: We foundthat DMSO produced tumor retardation when injected into mouseperitoneal cavities in a certain concentration range (0.5–1.0 mg/g). Furthermore, as detected by flow cytometry, TAM subtypeswere found to be transformed. We further imitated a tumor microenvironmentin vitro by using 4T1 cultured cell conditionedmedium. Similarly, by using low concentration DMSO (1.0%–2.0% v/v), TAMs were induced to polarize to the classically activatedmacrophage (M1-type) and inhibited from polarizing intothe alternatively activated macrophage (M2-type) in the conditionedmedium. IL-10 expression in tumors was reduced, whileIL-12 was increased compared with the control. Furthermore, wereported that 2.0% (v/v) DMSO could lead to cytotoxicity in peritonealmacrophages after 48 hours in MTT assays. Conclusion:Our findings suggest that DMSO could exert antitumor effects in4T1 cancer-bearing mice by reversing TAM orientation and polarizationfrom M2- to M1-type TAMs. These data may providenovel insight into studying breast cancer immunotherapy.
Li-Jun Zuo,Shu-Yang Yu,Fang Wang,Yanghui Xia,Ying-Shan Piao,Yang Du,Teng-Hong Lian,Rui-Dan Wang,Qiu-Jin Yu,Ya-Jie Wang,Xiao-Min Wang,Piu Chan,Sheng-Di Chen,Yongjun Wang,Wei Zhang 대한신경과학회 2016 Journal of Clinical Neurology Vol.12 No.2
Background and Purpose The aim of this study was to identify the clinical characteristics and potential mechanisms relevant to pathological proteins in Parkinson’s disease (PD) patients who experience fatigue. Methods PD patients (n=102) were evaluated using a fatigue severity scale and scales for motor and nonmotor symptoms. The levels of three pathological proteins—α-synuclein oligomer, β-amyloid (Aβ)1-42, and tau—were measured in 102 cerebrospinal fluid (CSF) samples from these PD patients. Linear regression analyses were performed between fatigue score and the CSF levels of the above-listed pathological proteins in PD patients. Results The frequency of fatigue in the PD patients was 62.75%. The fatigue group had worse motor symptoms and anxiety, depression, and autonomic dysfunction. The CSF level of α-synuclein oligomer was higher and that of Aβ1-42 was lower in the fatigue group than in the non-fatigue group. In multiple linear regression analyses, fatigue severity was significantly and positively correlated with the α-synuclein oligomer level in the CSF of PD patients, after adjusting for confounders. Conclusions PD patients experience a high frequency of fatigue. PD patients with fatigue have worse motor and part nonmotor symptoms. Fatigue in PD patients is associated with an increased α-synuclein oligomer level in the CSF