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히스토리 정보를 활용한 사용자 지향의 검색 시스템 설계 및 구현
전병휘,김정희,곽호영 제주대학교 공과대학 첨단기술연구소 2002 尖端技術硏究所論文集 Vol.13 No.1
User oriented search system is proposed and implemented using the information of history. For offering more qualified information to user without the redundant search results and unnecessary information of legacy search system, this system uses user information and generates a keyword and category. Comparing user favorite category with search result of legacy search system through the agent oriented search engine, the result close to the user category is only supplied. At the same time, search result is saved as the history databases according to each category to be used for later search work. As a result, the redundant information of search result was efficiently removed and the information close to the user favorite category was obtained.
안봉전,이진태,곽재훈,박정미,이진영,박태순,손준호,최청 경산대학교 생명자원개발연구소 2003 생명자원과 산업 Vol.7 No.-
Biological activities and anticarcinogenicity of Korean Pear peel were investigated. Electron donating activity and superoxide dismutase(SOD)-like activity of fraction Ⅱ, Ⅲ were up to 90% and 50-60% at 50ppm, respectively. Inhibitory effects on xanthine oxidase were about 80% at 50ppm, breast adenocarcinoma was about 60% at 2,000 ppm, higher Ⅲ than Ⅱ. Inhibitory effect on prostate adenocarcinoma was about 23% at 500 ppm. In conclusion, Korean Pear peel was expected to use as a functional material.
안봉전,이진태,이순애,곽재훈,박정미,이진영,박태순,손준호 경산대학교 생명자원개발연구소 2003 생명자원과 산업 Vol.7 No.-
Biological activities and application of sanguisorbae officinalis L. were investigated. In the enzymological physiological activities, the electron donating ability(EDA) was 54.92% in 10 ppm and it was over 90% over 50ppm and SOD-like activity was high as 65.36% in 1000 ppm, it was gradual increased. As inhibitory effect of xanthine oxidase, it was 17.90% in 200 ppm and a little low as 36.89% in 500 ppm and inhibitory effect of tyrosinase, it was a little low as 20.45% below 1000 ppm. As the result of measuring the lipid oxidation, all the concentrations of medical ion treatments had the ability to keep it from acidification and metal ion blocking effects about the lipid oxidation promoting factors(Fe^(2+) and Cu^(2+)), Fe^(2+) was better than Cu^(2+) and all concentrations of medical ion treatments was 40% in 50ppm. When it was applied into normal skin-softener it showed safe effect so that we can expect that as the natural material of cosmetics.
The effect of shift work on high sensitivity C-reactive protein level among female workers
Ho Sung Kwak,Hyoung Ouk Park,Young Ouk Kim,Jun Seok Son,Chan Woo Kim,Jun Ho Lee,Young Hoo Shin,Seung Hyun Park,Eui Yup Chung,Chang Ho Chae 대한직업환경의학회 2019 대한직업환경의학회지 Vol.31 No.-
Background: This study assessed the association between shift work and high-sensitivity C-reactive protein (hs-CRP) level, a risk factor for cardiovascular disease (CVD), in female workers in electronics manufacturing services (EMS). Methods: Female EMS workers who received special medical examinations for workers in Gyeongnam, Korea between January 2017 and December 2017 were enrolled in this study. Their age, marital status, education level, alcohol consumption, smoking habit, regular exercise, quality of sleep, work stress, and depression were investigated, and blood tests were conducted. The t- and χ2 tests were conducted to compare the general and biochemical characteristics between daytime and shift worker groups. Age-adjusted partial correlation analysis was performed to examine the linear relationship between hs-CRP level and other risk factors for CVDs. In addition, the difference in hs-CRP levels according to work schedule was analyzed by ANCOVA after adjusting for variables that could affect the hs-CRP level. Results: Although the average hs-CRP levels did not differ significantly between daytime and shift workers (0.92 ± 1.87 and 1.07 ± 2.20 mg/dL, respectively), shift workers tended to show a higher hs-CRP level (p = 0.067). After adjusting for variables that can affect the hs-CRP level, the estimated average hs-CRP level was significantly higher in shift workers (1.325 ± 0.156 mg/dL) than that in daytime workers (0.652 ± 0.350 mg/dL) (p = 0.003). Conclusions: The results of this study identified a relationship between shift work and hs-CRP level increase in women. Because multiple studies have reported associations between increased hs-CRP and CVD, follow-up of hs-CRP may help early detection of CVD in shift workers.
A Case of Significant Endobronchial Injury due to Recurrent Iron Pill Aspiration
Kwak, Joo-Hee,Koo, Gun Woo,Chung, Sung Jun,Park, Dong Won,Kwak, Hyun Jung,Moon, Ji-Yong,Kim, Sang-Heon,Sohn, Jang Won,Yoon, Ho Joo,Shin, Dong Ho,Park, Sung Soo,Pyo, Ju Yeon,Oh, Young-Ha,Kim, Tae-Hyung The Korean Academy of Tuberculosis and Respiratory 2015 Tuberculosis and Respiratory Diseases Vol.78 No.4
Gastric mucosal damage by iron pills is often reported. However, iron pill aspiration is uncommon. Oxidation of the impacted iron pill causes bronchial mucosal damage that progresses to chronic bronchial inflammation, necrosis, endobronchial stenosis and rarely, perforation. We reported a case of a 92-year-old woman with chronic productive cough and significant left-sided atelectasis. Bronchoscopy revealed substantial luminal narrowing with exudative inflammation of the left main bronchus. Bronchial washing cytology showed necroinflammatory exudate and a small amount of brown material. Mucosal biopsy showed diffuse brown pigments indicative of ferrous pigments, crystal deposition, and marked tissue degeneration. After vigorous coughing, she expectorated dark sediments and her symptoms and radiological abnormalities improved. There are a few such reports worldwide; however, this was the first case reported in Korea. Careful observation of aspiration-prone patients and early detection of iron pill aspiration may prevent iron pill-induced bronchial injury.
Lumbar discal cyst causing bilateral radiculopathy
Hyung-Jun, Kwak,Dae-Yong, Kim,Tae-Ho, Kim,Ho-Sang, Park,Jae-Sung, Kim,Jae-Won, Jang,Jung-Kil, Lee Medknow Publications 2011 Surgical neurology international Vol.2 No.-
<P><B>Background:</B></P><P>Discal cyst is a rare lesion that can result in clinical symptoms typical of disc herniation manifesting as a unilateral single nerve root lesion. To the best of the authors’ knowledge, this is the first reported case of discal cyst resulting in bilateral radiculopathy.</P><P><B>Case Description:</B></P><P>A 48-year-old female presented with bilateral sciatica and neurogenic claudication for 3 months. Magnetic resonance imaging revealed an extradural cystic lesion compressing the ventral aspect of the thecal sac at the level of the L3-L4 intervertebral disc. The lesion showed low and high signal intensities on T1- and T2-weighted images, respectively. Total excision of the cyst was achieved after a left hemipartial laminectomy of L3, and an obvious communication with the disc space was found. Bilateral sciatica was immediately resolved after surgery, and was sustained at the two-year follow-up. The histological diagnosis was consistent with a discal cyst.</P><P><B>Conclusions:</B></P><P>Although a discal cyst is extremely rare, the possibility of a discal cyst should be considered in differential diagnosis of patients with radiculopathy, particularly when encountering any extradural mass lesion ventral to the thecal sac. Surgical resection is the most employed therapeutic method for symptomatic lumbar discal cysts.</P>
곽준호(Jun-Ho Kwak),조관준(Kwan-Jun Jo),정성영(Sung-Young Jung),김지윤(Ji-Yoon Kim),오진석(Jin-Seok Oh) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.4
Recently, lots of researches are carried out to develop hybrid power generation system for ocean facility. In this paper, power system using multi-level type is proposed. The results of comparing data is presented using the actual test data and simulation experiments.