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전극 내 고분자 바인더 함량에 따른 접착력 및 전기화학 성능 평가
노영준,변승우,김용주,이용민 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.1
전기자동차의 경우, 내연기관 자동차와 동일 수준의 일 충전 주행거리를 확보하기 위해 전지의 고에너지밀도가 요구되고 있다. 해당 조건을 만족시키기 위해 전극 내 활물질의 함량을 높여 에너지밀도를 높이는 연구가 진행되고 있으나, 동일 로딩레벨 및 밀도에서 전극의 기계적 특성 및 전지의 장기 신뢰성이 상이할 수 있다. 이러한 기계적 특성이 확보되지 않은 전극은 전지 수명에 치명적이며, 이를 해결하기 위해 전극 내 기계적 특성 및 전기화학 성능의 최적화가 필수 선행되어야 한다. 본 연구에서는 전극 내 고분자 바인더의 함량을 1, 2, 4 wt%으로 조절하고 동일한 로딩레벨, 밀도를 갖는 복합전극을 제조하였다. 전극의 기계적 특성을 SAICAS를 통해 분석한 결과, 바인더 함량이 2wt%인 전극은 4wt% 전극에 비해 절반정도의 접착력을 보였으며, 실제 수명 평가 이후 해당 전극이 집전체에서 대부분 박리되는 것을 확인할 수 있었다. 본 연구를 통해 기계적특성과 전지 수명간의 상관관계를 확인하였으며, 이를 보고하여 전극 내 접착 특성이 면밀히 분석되어야 함을 제안한다.
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이진구,박형진,김동웅,송봉근,Lee, Jin-Goo,Park, Hyoung-Jin,Kim, Dong-Woong,Song, Bong-Keun 대한약침학회 2009 Journal of pharmacopuncture Vol.12 No.1
Objective : Following central nervous system(CNS) injury, inhibitory influences at the site of axonal damage occur. Glial cells become reactive and form a glial scar, gliosis. Also myelin debris such as MAG inhibits axonal regeneration. Astrocyte-rich gliosis relates with up-regulation of GFAP and CD81, and eventually becomes physical and mechanical barrier to axonal regeneration. MAG is one of several endogenous axon regeneration inhibitors that limit recovery from CNS injury and disease. It was reported that molecules that block such inhibitors enhanced axon regeneration and functional recovery. Recently it was reported that treatment with anti-CD81 antibodies enhanced functional recovery in the rat with spinal cord injury. So in this current study, the author investigated the effect of the water extract of Uncariae Ramulus et Uncus on the regulation of CD81, GFAP and MAG that increase when gliosis occurs. Methods : MTT assay was performed to examine cell viability, and cell-based ELISA, western blot and PCR were used to detect the expression of CD81, GFAP and MAG. Then also immunohistochemistry was performed to confirm in vivo. Results : Water extract of Uncariae Ramulus et Uncus showed relatively high cell viability at the concentration of 0.05%, 0.1% and 0.5%. The expression of CD81, GFAP and MAG in astrocytes was decreased after the administration of Uncariae Ramulus et Uncus water extract. These results was confirmed in the brain sections following cortical stab injury by immunohistochemistry. Conclusion : The authors observed that Uncariae Ramulus et Uncus significantly down-regulates the expression of CD81, GFAP and MAG. These results suggest that Uncariae Ramulus et Uncus can be a candidate to regenerate CNS injury.
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양재훈,박상구,김동웅,문구,이지연,Yang, Jae-Hoon,Park, Sang-Gu,Kim, Dong-Woong,Moon, Goo,Lee, Ji-Yeon 대한한방내과학회 2001 大韓韓方內科學會誌 Vol.22 No.1
In July, 2000, A 71-year-old man complained of these symptoms: frequent defecation, urgent need to defecate, fecal leakage, anal pain, flatus, and diarrhea after surgery for colorectal cancer. The symptoms are caused specifically by injury to the bowel and sphincter function. The patient suffered physically and psychologically; but, there was no special treatment in western medicine. Therefore, we treated him with electrical acupuncture for the management of sphincter tone and the alleviation of anal pain. We also treated him with herbal medicine for the recovery of strength and gastro-colic function. As a consequence of these treatments, the bowel disorders improved immediately and successfully, even though there were some limitations. So, We report this case with a brief review of related literatures.
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金東雄 대한동의병리학회 1998 동의생리병리학회지 Vol.12 No.1
1997年 2月부터 1997年 8月까지 圓光韓醫大 全州韓方病院에 中風으로 來院하여 治療한 34名(平均年齡:65.07歲, 男:19 女:15名)을 對象으로 舌診을 시행하였고, 관찰된 결과는 다음과 같다. 1. 中風原因에 대한 변증결과는 陰虛, 氣虛, 濕痰/痰火, 瘀血이 각각 13, 10, 7, 4例를 보였다. 2. 腦 電算化斷層 撮影 結果 腦出血로 診斷된 16例의 患者에서 舌質은 紅色, 絳色, 淡紅色, 靑紫色, 淡白色이 각각 6, 4, 4, 1, 1例를 보였다. 그리고 腦梗塞의 境遇는 18例중 舌質이 淡紅色, 淡白色, 紅色, 絳色, 靑紫色이 각각 7, 5, 3, 2, 1例를 보였다. 3. 入院當時 觀察한 顔面과 眼色은 面紅目赤한 境遇가 舌質이 紅, 絳한 경우에서 더 頻度가 높았으며, 面紅이 있는 患者는 程度의 差異는 있지만 모든 例에서 目赤을 같이 同伴하였다. 또한 腦 電算化斷層撮影 所見上 腦出血患者에서 腦梗塞이 있는 환자에서 보다 面紅과 目赤이 훨씬 더 많이 관찰되었다. A clinical observation by the tongue change as a diagnostic method was made on 34 acute stage (in 24 hours from the onset) cerebrovascular accident patients admitted to Wonkwang University, Chonju Oriental Medical Hospital from February, 1997 to August, 1997 and the observed results were summarized as follows. 1. The observed results with the differentiation of symtoms and signs for the cerebrovascular cause were that deficiency of yin(陰), deficiency of qi(氣), clamp phlegm or phlegm fire(濕痰, 痰火) and blood stasis(瘀血) was 13, 10, 7, 4 case(s), respectively. 2. The texture of tongue in 16 patients diagnosed intracranial hemorrhages on the brain CT was that red, dark red, pink, cyanosis color, and whitish color was 6, 4, 4, 1, 1 case(s), respectively. And the one in 18 cases diagnosed intracranial infarctions was that pink, whitish color, red, dark red, and cyanosis color was 7, 5, 3, 2, 1 case(s), respectively. 3. As the face color and the eyeball color of the observed patients in the first admission day, The flush and reddish eyes cases were more frequently occurred. Among the patients with red, dark red texture of tongue, All of the cases had reddish eyes in the flushed patients more or less. And The observed results in the intracranial hemorrhages were detected more frequently than one in the intracranial infarctions on the brain CT studys.
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당뇨합병증으로 인한 심근병증 환자를 五味子湯加味方으로 치험한 1例
조권일,신학수,한명아,서관수,김관식,김동웅,신선호,최진영 대한동의생리학회,대한동의병리학회 2001 동의생리병리학회지 Vol.15 No.6
This case study is about the effect of Omija-tang-gamibang(五味子湯加味方) for the cardiomyopathy complicated by diabetes mellitus, which was had been used except first 15 days during admission. Main complaints of our 61-year-old patient was dyspnea, edema of lower limb, general weakness, flank pain, dysuria, dyspepsia. He was transfered from other hospital after already being diagnosed as diabetic cardiomyopathy. His symptom was improved after taking the Omija-tang-gamibang(五味子湯加味方) for 20 days and he was discharged. From this case, it is thought that added the Omija-tang-gamibang(五味子湯加味方) is effective to diabetic cardiomyopathy and that more studies and examinations are needed in futher.
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