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생약 추출물에 의한 superoxide와 hydroxyl 라디칼 소거능 검색 방법의 개선
이호섭,강대길,Lee, Ho-Sub,Kang, Dae-Gill 한국생약학회 2001 생약학회지 Vol.32 No.3
The present study was designed for the improvement of routine measurement of superoxide and hydroxyl radical scavenging activities utilized by a microplate reader. Superoxide radical scavenging activity by the ascorbic acid, which is a well-known superoxide scavenger, was determined in a dose-dependent manner. Hydroxyl radical scavenging activity by the thiourea, which is a well-known hydroxyl radical scavenger, was also well detected in a dose-dependent manner. Our results suggest that the use of microplate reader to assay the superoxide and hydroxyl radical scavenging activities improves the accuracy of data and enables the use of much smaller amounts of samples and/or reagents, with much simpler experimental procedure. Therefore, These methods appear to be suitable for screening of superoxide and hydroxyl radical scavenging activities in both the plant medicinal extracts and the isolated compounds.
이호섭,Lee, Ho-Seoub 대한경영정보학회 2007 경영과 정보연구 Vol.23 No.-
In the highly competitive and divers world of financial market, customer is the single most important factor to company's survival. Especially, creating a relationship with valued customers is a key to success. CRM provides the mean to retain high value customers. It takes a prospect of what customers expect. Utilizing those knowledge can help the products and service meet the customers' needs, thereby maximizing customer satisfaction and company's profit. In this report, I am going to suggest a few ways to develop successful CRM in the life insurance industry. First, CRM should innovate the way of communication to keep pace with Web 2.0 era. In other words, the customer's needs should be caught by real-time communication than traditional off-line market research. Thus, the functionality and specification of products can be decided by customer's direct choice so that the customers are able to purchase the understanding and experience of the products. Second, CRM project should consider whether the initial strategy plan can promise the stable growth of customer at the first step. When planning strategy, the project needs to identify what customer wants and how to fulfill the needs with stable growth of the customer. In addition, the CRM should be developed by realizing that customer centric benefits ultimately guarantee the growth of the organization. Third, CRM systems should enhance the organization's ability to take the customer's insight in a 360 degree view and to capture the voice of the customer directly. In order to develop the best matched product package, more precise customer segmentation should be ahead of market segmentation strategy. Forth, the biggest reward from CRM will be a customer royalty program. Many successful banks are already planning and practicing customer royalty strategy. A comprehensive analysis of customers and their behavior allow organization to identify high value potential customers' needs and determine a strategy required to meet those needs. Even life insurance companies such as Prudential Korea are developing products designed for royal customers. Fifth, understanding and managing the experience of customer called Customer Experience Management also can increase customer satisfaction. Measuring only customers' experience and adapting it to marketing strategy make products position in the gap between the customers' expectation and experience not required by market. A key component of CEM is its application across all organizational functions. At last, the direction of change and development of CRM can be defined from the conceptualization of information technology represented by Ubiquitous and Web 2.0. Instead of just managing customer information, companies should take the initiative in personalized system with customer oriented strategy. Furthermore, with the regular communication between CRM stakeholders (Sales-Marketing-IT), customer's demand should be directly reflected to enterprise strategy in real time.
구기자(枸杞子) 추출물이 납 투여(投與)에 의한 흰쥐의 신장(腎臟) 손상(損傷)에 미치는 영향(影響)
이호섭,한성희,한상환,Lee, Ho-Sub,Han, Sung-Hee,Han, Sang-Hwan 대한한방내과학회 2001 大韓韓方內科學會誌 Vol.22 No.2
This study was designed to investigate the effects of Korean Lycii Fructus water extract in Pb-administered rats. The Pb exposed rats were given 100 ppm and 200 ppm in the distilled water. Sixty male Sprague-Dawley rats weighing between 90 and 110g were blocked into 6 groups according to body weight. The control group was fed a normal diet, without lead. The experimental groups, which was fed a normal diet plus 100 ppm and 200 ppm lead, and one group received a normal diet plus Lycii Fructus water extracts. The results: the Food intake, the weight gain, and the kidney weight content in the cadmium added groups were lower than those in the Lycii Fructus water extracts group. The contents of Pb in the kidneys of the rats were determined by using ICP(lnductively Coupled Plasma Spectrophotometer). The accumulation of lead in the kidney was lower in the Lycii Fructus water extracts group. The Plasma levels of renin activity was higher in the lead administration groups, as compared with the Lycii Fructus water extracts. Plasma levels of aldosterone activity was higher in the lead administration group, as compared with Lycii Fructus water extracts. These results suggest that Lycii Fructus water extracts has a lowering effects on the accumulation of pb on kidney and it is believed that the Lycii Fructus water extracts have some protective effects on lead-induced nephrotoxicity in rats, but the mechanism of these effects was obscure.
성·복토용으로 사용된 전로제강슬래그가 주변 토양환경에 미치는 영향
이호섭,남택우,조은혜,남경필,Lee, Hosub,Nam, Taekwoo,Jho, Eun Hea,Nam, Kyoungphile 한국지하수토양환경학회 2016 지하수토양환경 Vol.21 No.3
The effect of blast oxygen furnace (BOF) slag used as filling materials on the soil environment was studied using column tests that simulated the flow of the BOF slag leachate through the soil layer. The Cu, Mn, Zn, Ni, and F contents of the leachate affected soil were similar to that of the controls (i.e., soils that were not affected by the leachate). The As, Cd, and Pb contents were lower in the leachate affected soils than the controls. The changes in these contaminants contents can be attributed to the interactions between anions such as alkalinity generating anions (e.g., CO<sub>3</sub><sup>2−</sup>, HCO<sub>3</sub><sup>−</sup>, OH<sup>−</sup>) or calcium ions with heavy metals or F, which consequently affected the fate of heavy metals and F in the leachate affected soils. The germination and growth of Spinapis alba in the soils affected by the leachate and the controls were also similar. However, the proportion of alkalophilic bacteria in the soils affected by the leachate significantly increased, and this can be explained by the increased soil pH due to the alkaline leachate. Overall, this study shows that the alkalinity of the BOF slag leachate, rather than the presence of heavy metals and F in the leachate, needs to be considered when the BOF slag is to be reused as structural filling materials.
위성통신 시스템에서 이동형 위성단말을 위한 개루프 전력제어 알고리즘
이호섭,박형원,윤원식,Lee, Ho-Sub,Park, Hyung-Won,Yoon, Wonsik 한국정보통신학회 2014 한국정보통신학회논문지 Vol.18 No.9
본 논문에서는 정지궤도 위성을 운용하는 위성통신환경에서 이동형 위성단말의 송신전력제어를 위한 개루프 전력제어 알고리즘을 제안한다. 제안하는 알고리즘은 위성체로부터 전송되는 비콘 신호를 기준으로 현재 위성채널 상태가 장애물에 의해 LOS가 제한되는 상황인지, 안테나의 위성추적 오차로 인해 발생되는 손실인지 판별한다. 판별된 신호감쇄 원인을 기준으로 안테나 위성추적 오차 시는 RF 출력을 멈추며, 장애물에 의한 채널 단절이 발생될 경우는 전력제어 없이 확산을 통해 데이터 수신 확률을 향상시킨다. 제안하는 알고리즘의 성능분석을 위해 인접위성 간섭 수준과 채널 아웃티지 확률을 분석하였으며, 분석결과 제안하는 알고리즘이 더 높은 성능을 보임을 확인하였다. In this paper, we propose an open loop power control algorithm to control transmission power of the On-The-Move(OTM) Satcom terminal in GEO satellite communication environment. The proposed algorithm identifies the current channel state restricted by an obstacle or an antenna depointing loss based on the received beacon signal strength. On the basis of the determined signal attenuation causes, the OTM Satcom terminal turns off the RF output when an antenna tracking is failed. If the OTM Satcom terminal experiences a channel blockage by an obstacle, the terminal spreads the transmit data to increase data reception probability. To evaluate the performance of the proposed algorithm, we compare an adjacent satellite interference level and an outage probability. The results show the performance of the proposed algorithm is better than that of the conventional algorithm.
이윤정,김언국,김혜윰,윤정주,이소민,이용표,이건목,강대길,이호섭,Lee, Yun Jung,Kim, Eon Kuk,Kim, Hye Yoom,Yoon, Jung Joo,Lee, So Min,Lee, Yong-Pyo,Lee, Geon Mok,Kang, Dae Gill,Lee, Ho Sub 대한한의학방제학회 2013 大韓韓醫學方劑學會誌 Vol.21 No.1
Objectives : Diabetes mellitus is the leading cause for vascular complications such as atherosclerosis. The present study is to investigate whether Doinseunggi-tang (DST) improves diabetic vascular dysfunction in type II diabetes. Methods : The db/db mice were treated with high fat/high cholesterol diet and DST (200 mg/kg/day) for 8 weeks. Results : DST significantly lowered blood glucose and systolic blood pressure. In addition, DST also markedly decreased total plasma cholesterol, triglyceride, and LDL-cholesterol, whereas increased the HDL-cholesterol. Vascular relaxation of aortic rings by acetylcholine or SNP was ameliorated by DST in a dose-dependent manner. Damage of vascular intima and hypertrophic of media was improved by DST. Immunohistological study revealed that DST attenuated the increase of ICAM-1, VCAM-1, and ET-1 expression in thoracic aorta. Conclusions : Taken together, DST suppressed hyperglycemia and diabetic vascular dysfunction in type II db/db mice. The present data suggests that Doinseunggi-tang may be prevent a development of diabetic atherosclerosis.
레이저 박피술 후 발생한 비후성 반흔에 대한 치료 5예
이호섭 ( Lee Ho Seob ),박재홍 ( Park Jae Hong ),김수남 ( Kim Su Nam ),계영철 ( Gye Yeong Cheol ) 대한피부과학회 2003 대한피부과학회지 Vol.41 No.9
At times several complications can be encountered after laser resurfacing, even with careful preoperative screening and patient preparation as well as meticulous intraoperative technique. Hypertrophic scar is rare but the most severe complication, which e