전도성 고분자 센서 어레이를 이용한 휘발성 유기 화합물 가스 인식

이경문,주병수,유준부,황하룡,이병수,이덕동,변형기,허증수 한국센서학회 2002 센서학회지 Vol.11 No.5

휘발성 유기 화합물 가스(Volatile Organic Compounds)를 인식하고 분석하기 위하여 전도성 고분자 센서어레이를 이용한 시스템을 제작하였다. Polypyrrole와 Polyaniline을 화학중합법으로 센서에 전도성고분자막을 형성하였고 이를 통해 VOC 검지용 센서 어레이를 제작하였다. 센서어레이로부터 측정되는 다차원 데이터는 주성분분석법(PCA)과 RBF(Radial Basis Function Network)을 이용하였다. 제안된 시스템으로 VOCs 가스를 인식하는데 있어서 RBF Network이 PCA방식보다 더욱 효율적인 것으로 판단되었다. We fabricated gas recognition system using conducting polymer sensor array for recognizing and analyzing VOCs(Volatile Organic Compounds) gases. The polypyrrole and polyaniline thin film sensors which were made by chemical polymerization were employed to detect VOCs. The multi-dimensional sensor signals obtained from the sensor array were analyzed using PCA(principal component analysis) technique and RBF(radial basis function) Network. Throughout the experimental trails, we confirmed that RBF Network is effective than PCA technique in identifying VOCs.

비만세포주에서 Histamine 유리에 관한 연구

김형룡,국윤아,신민,이홍수,원진숙,김형민,이영미,정헌택,이혜숙,안녕형 원광대학교 생명공학연구소 1995 생명공학연구소보 Vol.3 No.1

요골동맥을 이용한 관동맥 조영술의 유용성

윤정한,이승환,이한요,김장영,김일회,최윤종,이형준,이명옥,김승년,황성오,홍인수,최경훈 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.10

추황배(Pyrus pyrifolia Nakai cv. Chuhwangbae) 과피로부터 1종의 Sterol과 3종의 배당체 화합물의 단리·동정

이유건(Yu Geon Lee1),조정용(Jeong-Yong Cho),이현주(Hyun Joo Lee),이용현(Yong Hyun Lee),이상현(Sang-Hyun Lee),한태호(Tae-Ho Han),김월수(Wol-Soo Kim),박근형(Keun-Hyung Park),문제학(Jae-Hak Moon) 한국식품과학회 2013 한국식품과학회지 Vol.45 No.5

본 연구에서는 배의 유용성 증명을 위한 일환으로 배의 화학성분을 분자수준에서 밝히고자 하였다. 이에 배 과피 MeOH 추출물을 용매분획하여 얻은 EtOAc-산성 분획과 EtOAc-중성분획을 대상으로 Sephadex LH-20, silica gel, 그리고 ODS colmn chromatography와 HPLC를 이용하여 정제 및 단리하였다. 그 결과, EtOAc-산성 분획과 EtOAc-중성 분획으로부터 각각 2종씩의 화합물을 단리하였다. 단리된 화합물 1-4는 1H- 및 13C-NMR 분석을 통하여 각각 (S)-(+)-2-cis-abscisic acid O-β-D-glucopyranosyl ester (화합물 1), 1-[4-O-β-D-glucopyranosyl]phenyl ethanone(piceoside, 화합물 2), β-sitosterol (화합물 3), 그리고 β-sitosteryl 3-O-β-D-glucopyranoside (화합물 4)로 동정되었다. 단리된 3종의 배당체 화합물(화합물 1, 2, 4)들은 본 연구에 의해 배로부터 처음 동정되었으며, 화합물 3은 추황배로부터 처음 동정되었다. 본 연구결과가 배 함유 성분연구는 물론 배의 기능성 해명 연구에도 추후 중요한 기초자료로 활용되길 기대한다. We isolated and identified antioxidants from acidic and neutral ethyl acetate fractions of the peel of pear (Pyrus pyrifolia N. cv. Chuhwangbae). We isolated 4 compounds from the methanol extract, by using 3 different types of column chromatography (Sephadex LH-20, silica gel, and octadecylsilane) and preparative HPLC. We identified the isolated compounds as (S)-(+)-2-cis-abscisic acid O-β-D-glucopyranosyl ester (compound 1), 1-[4-O-β-D-glucopyranosyl]phenyl ethanone (picroside, compound 2), β-sitosterol (compound 3), and β-sitosteryl 3-O-β-D-glucopyranoside (compound 4) by nuclear magnetic resonance analysis. We are the first to report the identification of compounds 1, 2, and 4 from pear.

림프종 환자에서의 갈륨, TI-201 그리고 Tc-99m MIBI 섭취의 비교

천경아,조인호,원규장,이경희,이형우,현명수,이재태,이규보 영남대학교 의과대학 2002 Yeungnam University Journal of Medicine Vol.19 No.2

Purpose; Ga-67 scintigraphy has been used for the evaluation of tumors, especially lymphoma. Recently, Tl-201 and Tc-99m MIBI were also used to tumor imaging. Tl-201 and Tc-99m MIBI had better physiologic characteristics than Ga-67, so we studied 32 biopsy proven lymphoma patients (male 24, female 8, mean age 46 years) with Ga-67, Tl-201 or Tc-99m MIBI and compared the scan findings. Materials and Methods: Twenty-three of 32 patients were injected 74-111 MBq (2-3 mCi) of Tl-201, before chemotherapy and imaged with dual-headed SPECT (Prism 2000, Picker, USA) at 30 minutes after injection. Delayed images were obtained after 3 hr in 8 patients. Twenty seven of 32 patients were injected 740 MBq (20 mCi) of Tc-99m MIBI and imaged at 30 minutes after injection. 111-185 MBq (3-5 mCi) of Ga-67 was injected in 12 patients and imaged at 48 and 72 hours after injection. Twenty eight patients were diagnosed as non-Hodgkin's lymphoma and others were Hodgkin's lymphoma. Results: Twenty patients were positive on Tl-201 scan and 3 patients showed negative findings. One of these 3 patients, Tc-99m MIBI and Ga-67 scan were positive. Twenty two patients were positive on Tc-99m MIBI scan and 5 patients showed negative findings. One of these 5 patients, Tl-201 was positive and 2 were positive on Ga-67 scan. Ten of 12 patients showed positive findings on Ga-67 scan. The sensitivity of these agents were 83.3%, 87.0% and 81.5% for Ga-67, Tl-201 and Tc-99m MIBI, respectively. The sensitivity was highest in Tl-201 scan, but there were no significant differences among three tests. In this study, there was no significant difference of uptake ratios between early and delayed images of Tl-201. Conclusion: Scintigraphy with Tl-201 and Tc-99m MIBI in lymphoma patients have similar sensitivity with Ga-67.

SHS법에 의한 TiC-Al₂O₃계 세라믹스의 합성 및 소결특성

이형복,김성수,편무실,최덕배 明知大學校 産業技術硏究所 1991 産業技術硏究所論文集 Vol.10 No.-

TiC-Al₂O₃ system powders were prepared by the self-propagating high temperature synthesis method from the mixture of metal titanium, carbon and alumina powder, Powder and sintering characterization of TiC-Al₂O₃ system were investigated. TiC-15wt% Al₂O₃ compacts sintered by hoy-pressing under the pressure of 20MPa at 1850 for 90 minutes showed 3-point bending strength of 724Mpa, ?? of ??????, hardness of 2450㎏/㎟ and relative density of 97%. The combustion mode of combustion wave showed steady-state up to 15wt% Al₂O₃, spin above 20wt% Al₂O₃ also combustion velocity was decreased with increasing of Al₂O₃ contents.

당밀의 첨가가 갈근탕박 사일리지의 품질과 산양의 기호성에 미치는 영향

김성복,문계봉,이봉덕,오홍록,배형철,이수기 충남대학교 농업과학연구소 2006 농업과학연구 Vol.33 No.1

Two experiments were conducted to investigate the effects of molasses supplementation to silage materials in ensiling Galgeuntang (herbal medicine) meal on the quality of silage, and its palatability in Korean native goats. In experiment Ⅰ, molasses was added at the levels of 0, 0.5, and 1.0% to Galgeuntang meal with three replicates per treatment. In experiment Ⅱ, three 1.5-yr-old Korean native goats were used to measure palatability. In experiment Ⅰ, lactic acid contents in molasses treatments were significantly(p<0.05) higher, and pH and butyric acid contents were lower than those of non-molasses treatment. In addition, molasses treatment increased total microbial cell counts in MRS medium for lactobacillus, but decreased total microbial cell counts in PDA medium for fungi. Molasses supplementation to silage materials increased in vitro dry matter disappearance. Molasses supplementation tended to increase silage intake in Korean native goat (experiment Ⅱ), but the difference was not significant(p>0.05). It is concluded that molasses supplementation to silage materials in ensiling herbal medicine meal could improve its preservability and palatability, the higher the better.

암환자에서 다른 신경학적 증상이 동반되지 않는 두통 : 예비 보고

이성형,안미영,백신혜,이형석,신동익,이상수 충북대학교 의과대학 충북대학교 의학연구소 2010 忠北醫大學術誌 Vol.20 No.1

연구목적 : 암환자에서 신경학적 결손이나 발작 등이 동반되지 않는 두통의 원인과 이런 경우 심각한 두개내 질환에 의한 이차두통을 의심할 수 있는 소견의 진단적 유용성을 알아보고자 하였다. 대상 및 방법 : 2005년 10월부터 2009년 1월까지 신경학적 결손이나 발작을 동반하지 않는 두통이 발생한 71명의 암환자를 대상으로 하였다. 자세한 병력을 청취하고 신경학적 검사를 하였으며, 환자의 상황에 따라 적절한 조합의 뇌MRI, 뇌CT, 및 뇌척수액 검사를 시행하였고, 최소한 3개월 이상 추적 관찰하였다. 이 소견을 종합하여 두통의 국제분류 기준(The International Classification of Headache Disorders, second edition) 에 따라 두통을 진단하였다. 또한 심각한 두개내 질환에 의한 이차두통을 의심할 수 있는 소견인 있는 환자군과 없는 환자군 사이에 중추신경계로의 전이빈도가 차이가 나는지 알아보았다. 결과 : 71명 중에 8.5%인 6명에서 중추신경계로의 전이가 관찰되었는데 심각한 두개내 질환에 의한 이차두통을 의삼할 수 있는 소견이 있었던 18명 중에 4명(22.2%), 이런 소견이 없었던 53명 중에 2명(3.8%)이었다. (상대위험도 5.89, 95% 신뢰구간 1.18-29.49). 두통의 다른 원인으로는 지주막하 출혈이 1명, 중추신경계 이외의 감염에 의한 두통이 6명, 항암제에 의한 두통이 1명, 고혈압성 두통이 1명, 방사선 치료와 관련된 두통이 1명, 원발성 찌름두통이 3명, 긴장성 두통이 51명이었다. 결론 : 심각한 두개내 질환에 의한 이차두통을 의심할 수 있는 소견의 유무가 암환자에서 발생하는 두통의 감별진단에 유용하며, 이러한 소견이 동반되지 않는 경우의 두통은 대부분 양성이다. 하지만 이러한 결론을 바탕으로 향후 보다 많은 대상 환자군을 통한 연구가 필요할 것이다. Purpose: Headache in patients with systemic malignancy is a great concern to neurologists. We performed this study to investigate the frequency of metastasis as the cause of headache in the patients with systemic malignancy and the usefulness of symptoms suggesting underlying serious pathologies especially when headaches do not accompany any other neurological symptoms. Materials and Methods: From October 2005 to January 2009, we prospectively collected 71 patients with systemic malignancy complaining headache but not having any other accompanying neurological symptoms. After thorough history taking and neurological examination, we performed a neuroimaging (MRI or CT) and CSF study according to the clinical situations of individual patients and followed them at least 3 months and diagnosed headaches according to The International Classification of Headache Disorders, second edition (ICHD-II). We compared the incidence of intracranial metastasis between headaches with symptoms suggesting underlying serious illness and those without. Results: Six (8.5%) out of 71 patients had intracranial metastasis: 4(22.2%) out of 18 patients with symptoms suggesting underlying serious illness, 2(3.8%) out of 53 patients without them (relative risk 5.89, 95% confidence interval 1.18-29.49). Other causes included subarachnoid hemorrhage (1 patient), headache attributed to infection (6), headache attributed to drug (2), hypertensive headache (1), headache attributed to radiotherapy (1), primary stabbing headache (3), and tension headache (51). Conclusion: This study suggests that headache symptoms suggesting underlying serious disorder are valuable in differentiating the causes of headache without any other accompanying neurological symptoms in patients with systemic malignancy and headaches without those symptoms might be usually benign. However, more broad study should be made for these value and relationship.

企業의 輸出決定에 있어 意思決定者의 역할

李秀珩 慶北大學校 經商大學 經濟學科 1987 慶商大學論集 Vol.15 No.-

외측상과염에 관한 고찰

이문환,신형수 대한정형도수치료학회 2005 대한정형도수물리치료학회지 Vol.11 No.2

Lateral epicondylitis is characterized by pain at the lateral aspect of the elbow, commonly associated with resisted wrist or finger extension and gripping activities. Lateral epicondylitis is also known such as lateral epicondylosis, tennis elbow, or tendonitis of the wrist extensor muscles, especially extensor carpi radialis brevis. Lateral epicondylitis is a common musculoskeletal lesion in the clinical states, so physical therapist usually meet a patients who has the lateral epicondylitis. But many of physical therapists are treating patients based on a self know-how, so I want to describe a systematically about lateral epicondylitis and give a objective information on the lateral epicondylitis. And now I want that they will be treat patients with lateral epicondylitis not a self-experience but based on a objective information.