천문과학관 프로그램에 반영된 과학교육과정의 분석

윤광아,최상인,정구송,이호 경북대학교 과학교육연구소 2009 科學敎育硏究誌 Vol.33 No.1

이 연구는 과학 교육과정 중 천문관련 단원의 내용과 천문과학관의 전시내용을 비교 분석하여 천문과학관이 교육과정의 내용과 목표를 얼마나 잘 반영하고 있는지 알아보는데 목적이 있다. 연구 대상은 국내 천문과학관 5곳으로 천문과학관 프로그램 평가도구를 사용하여 프로그램 내용을 평가하고 프로그램 형태를 조사하여 분석하였다. 이 때 사용된 평가도구는 교육부(1997)에서 고시한 과학교육과정 내용과 교육과정 평가원(2000)에서 제시한 성취기준 및 평가기준을 근거로 고안하였다. 이 연구의 결과를 요약하면 다음과 같다. 천문과학관에서는 과학 교육과정 내용 중 천문관련 학습요소를 대부분 반영하고 있었다. 이는 천문과학관이 비형식 교육 기관으로서 학교 과학 교육과 비교적 잘 연계되고 있음을 보여준다. 교육과정 반영비율은 5학년이 가장 높으며, 전시 형태는 패널 형태가 가장 많았다. 평가점수는 반영비율에 비하여 낮았는데 이는 향후 천문과학관의 프로그램을 선정함에 있어 과학 교육과정을 더 충실히 반영하여야 함을 알 수 있다. The purpose of this study is to investigate how much the programs of astronomy museums reflect the contents and objectives of current science curriculums. To attain the aim, comparison and analysis on the museum programs and science curriculum have been made. Five domestic astronomy museums have been selected. The contents and forms of their programs have been studied and appreciated by assessment instruments for astronomy museum programs. The assessment instruments were devised in consideration of both the science curriculums of the Ministry of Education(1997) and the achievement and evaluation criteria of the Korea Institute of Curriculum and Evaluation. The findings of this study are summarized as follows: The astronomy museums reflect most of the learning elements of science curricula concerning astronomy. These results indicate that the astronomy museum as an informal education institute is comparatively well connected to science education. The 5th grade science curriculum reflected mostly on the museum programs, and too many of the astronomy museum programs were in forms of panel exhibition. Science curricula fared well but they failed to reflect the curricular objectives, which resulted m relatively low assessment scores. It is suggested that the findings of this study can be a foundation and act as guidance for selecting and developing astronomy museum programs which include the contents of the science curriculums more substantially.

진딧물의 경보페로몬인 (E)-β-Farnesene의 합성과 생물활성시험

강석구,정경운,이정운,고현관 성균관대학교 기초과학연구소 1986 論文集 Vol.37 No.1

(E)-β-Farnesene, the alarm pheromone of aphids was synthesized from nerolidol by reacting in a sealed tube at 150℃ for 24h with DMSO. Base(KOtBu/DMSO) catalized elimination of HCl from farnesyl chloride at 50℃ for 4h afforded (E)-β-farnesene as the major product. Farnesyl chloride was prepared from nerolidol or farnesol with SOCl_2 or HCl. Biological activity test of (E)-β-farnesene thus synthesized was conducted.

LC/MS/MS 분석법을 이용한 Amlodipine의 약물동태연구

서정원,윤민혁,강원구,권광일 충남대학교 약학대학 의약품개발연구소 2007 藥學論文集 Vol.22 No.-

The aim of this study were to confirm the analysis method and also to estimate the pharmacokinetic parameters of amlodipine in human volunteers. In an open-label single-dose pharmacokinetic study, a group, consisting of 24 healthy volunteers, received single oral dose of 5mg amlodipine. Blood sample were taken for up to 120 hours. The concentration of amlodipine in these body fluids was determinated using a validated high-performance liquid chromatography(HPLC) method with tandem mass spectrometry. Amlodipine and ketoconazole, an internal standard, were extracted from plasma using ethyl acetate in the presence of 0.1M sodium carbonate. After drying the organic layer, the residue was reconstituted in mobile phase(acetonitrile : water = 70 : 30 v/v (0.1% formic acid)) and injected onto a Zorvax C18 column (2.1 × 100 mm, 3.5 ㎛ particles). The isocratic mobile phase was eluted at 0.2ml/min. The ion transitions monitored in multiple reaction-monitoring mode were m/z 410.10 → 294.95 and 532.11 → 81.95, respectively. The coefficient of variance of the assay precision was less than 12%, and the accuracy exceeded 99.1%. The limit of quantification was 0.1 ng/ml. The pharmacokinetic parameters were calculated with non-compartmental(AUC, C_(max), T_(max), CL_(t), V/F) and compartmental(K_(el), K_(a), t_(lag)) pharmacokinetic analysis using WinNonlin program. The estimated means of AUC_(0-120hr), C_(max) and T_(max) were 196.90 ± 5.02 ng·hr/ml, 3.36 ± 0.09 ng/ml and 10.44 ± 0.61 hr, respectively. The means of other pharmacokinetic parameters(V/F, CL_(t), K_(el), K_(a) and t_(lag)) were 1208.06 ± 50.61 L, 25.39 ± 0.65 L/hr, 0.2806 ± 0.0294 hr^(-1), 0.0210 ± 0.0008 hr-1 and 0.4574 ± 0.0635 hours, respectively.

Corrigendum: Dental alloplastic bone substitutes currently available in Korea

Ku, Jeong-Kui,Hong, Inseok,Lee, Bu-Kyu,Yun, Pil-Young,Lee, Jeong Keun The Korean Association of Oral and Maxillofacial S 2019 대한구강악안면외과학회지 Vol.45 No.4

Dental alloplastic bone substitutes currently available in Korea

Jeong-Kui Ku,Inseok Hong,Bu-Kyu Lee,Pil-Young Yun,Jeong Keun Lee 대한구강악안면외과학회 2019 대한구강악안면외과학회지 Vol.45 No.2

As dental implant surgery and bone grafts were widely operated in Korean dentist, many bone substitutes are commercially available, currently. For commercially used in Korea, all bone substitutes are firstly evaluated by the Ministry of Health and Welfare (MOHW) for safety and efficacy of the product. After being priced, classified, and registration by the Health Insurance Review and Assessment Service (HIRA), the post-application management is obligatory for the manufacturer (or representative importer) to receive a certificate of Good Manufacturing Practice by Ministry of Food and Drug Safety. Currently, bone substitutes are broadly classified into C group (bone union and fracture fixation), T group (human tissue), L group (general and dental material) and non-insurance material group in MOHW notification No. 2018-248. Among them, bone substitutes classified as dental materials (L7) are divided as xenograft and alloplastic bone graft. The purpose of this paper is to analyze alloplastic bone substitutes of 37 products in MOHW notification No. 2018-248 and to evaluate the reference level based on the ISI Web of Knowledge, PubMed, EMBASE (1980-2019), Cochrane Database, and Google Scholar using the criteria of registered or trademarked product name.

The biological effects of fibrin-binding synthetic oligopeptides derived from fibronectin on osteoblast-like cells

Kim, Yun-Jeong,Park, Yoon-Jeong,Lee, Yong-Moo,Rhyu, In-Chul,Ku, Young Korean Academy of Periodontology 2012 Journal of Periodontal & Implant Science Vol.42 No.4

Purpose: The aim of this study was to investigate the effects of synthetic fibronectin (FN) fragments, including fibrin binding sites from amino-terminal FN fragments containing type I repeats 1 to 5, on osteoblast-like cell activity. Methods: Oligopeptides ranging from 9 to 20 amino acids, designated FF1, FF3, and FF5, were synthesized by a solid-phase peptide synthesizing system, and we investigated the effects of these peptides on cell attachment and extent of mineralization using confocal microscopy, 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assays, and Alizarin red S staining. Results: FF3 and FF5 peptides increased the number of attached human osteoblastic cells, and FF3 administration led to prominent cell spreading. Mineralization was increased in FF3 and FF5 compared to FF1 and the untreated control. Conclusions: Taken together, it can be concluded that the fibrin-binding oligopeptides FF3 and FF5 enhanced cell attachment and mineralization on osteoblast-like cells. These results indicate that FF3 and FF5 have the potential to increase osteoblast-like cell activity. Performing an in vivo study may provide further possibilities for surface modification of biomimetic peptides to enhance osteogenesis, thus improving the regeneration of destroyed alveolar bone.

제2형 당뇨병환자에서 유산소 운동 강도에 따른 인슐린저항성의 변화

구윤희 ( Yun Hyi Ku ),구보경 ( Bo Kyung Koo ),안희정 ( Hee Jung Ahn ),정지연 ( Ji Yun Jeong ),석희금 ( Hee Geum Seok ),김호철 ( Ho Chul Kim ),한경아 ( Kyung Ah Han ),민경완 ( Kyung Wan Min ) 대한당뇨병학회 2009 Diabetes and Metabolism Journal Vol.33 No.5

연구배경: 운동은 주로 동맥경화증 및 인슐린저항성으로부터 보호하는 작용을 통해 사망률을 감소시키는 데에 도움이 되는 것으로 알려져 있다. 이번 연구에서는 제2형 당뇨병환자에서 어떤 강도의 운동이 염증을 완화하고, 내피 세포 기능을 개선시키며 인슐린저항성을 호전시키는 데에 더욱 도움이 되는지 알아보고자 하였다. 방법: 총 59명의 비만한 여성 2형 당뇨병환자가 대조군(CG, N=18), 중강도 운동군(MEG, N=17), 고강도 운동군(VEG, N=14)으로 randomly 배정되어, 가속계로 모니터하며 12주간 운동 요법을 시행하였다. 연구시작시점, 12주 운동 종료 시점, 연구시작으로부터 1년 시점에 체중, 전산화 단층 촬영을 이용하여 복부지방, 피하지방, 내장지방을 측정하였으며, 혈장 hs-CRP, IL-6, 인슐린감수성을 측정하였다. 결과: 평균 연령은 54±7세, 체질량지수는 26.9±2.5 kg/m2이었다. 운동 요법 동안 두 운동군은 운동 칼로리로 각각 488.6±111.9 kcal/day, 518.8±104.1 kcal/day를 사용하였다. 체질량지수, 복부지방, 피하지방은 두 운동군에서(ΔBMI: -1.1±0.7, -0.8±0.5, ΔTF: -4,647±3,613 mm2, -2,577±2,872 mm2, ΔSF: -2,057±2,021 mm2, -1,141±1,825 mm2, respectively) 대조군에 비해 유의하게 감소하였으나(P<0.01), hs-CRP, IL-6 및 FMD는 변화 없었다. 인슐린감수성은 고강도 운동군에서만 감소하였으며, 내장지방은 중강도 운동군에서만 감소하였다. 1년 추적관찰 결과, 이러한 차이는 모두 소실되는 경향을 보였다. 결론: 제2형 당뇨병환자에서 체중 및 체지방 감소를 동반한 고강도 운동은 3개월간의 intervention을 통해 전신 염증수치나 내피 세포 기능의 변화 없이 인슐린감수성 개선 효과를 나타냈다. Background: Exercise offers protection against atherosclerosis and insulin resistance. We evaluated the benefits of exercise at different levels of intensity for ameliorating inflammation, endothelial dysfunction, and insulin resistance in a sample of type 2 diabetic subjects. Methods: Fifty-nine overweight women with type 2 diabetes were randomly assigned to control (CG, N=18), moderate-intensity exercise (MEG, N=17), and vigorous-intensity exercise (VEG, N=14) groups. Patients in the two experimental groups completed a 12-week exercise program, with their exercise activities monitored by accelerometers. We assessed the patients` body weights, total abdominal fat (TF), subcutaneous fat (SF) and visceral fat (VF) via computed tomography, measurements of plasma levels of hs-C-reactive protein (hs-CRP) and interleukin-6 (IL-6), assessment of endothelial function by brachial artery flow-mediated dilation (FMD), and evaluation of insulin sensitivity by insulin tolerance tests, at baseline, at the end of the 12-week interventions, and one year after initiation of the study. Results: At baseline, the average age of all subjects was 54±7 years, and average body mass index (BMI) was 26.9±2.5 kg/m2. During the intervention, patients in the MEG and VEG groups expended comparable amounts of activity-related calories (488.6±111.9 kcal/day, 518.8±104.1 kcal/day, respectively). Although BMI, TF, and SF decreased similarly in the MEG and VEG groups (ΔBMI: -1.1±0.7, -0.8±0.5, ΔTF: -4,647±3,613 mm2, -2,577±2,872 mm2, ΔSF: -2,057±2,021 mm2, -1,141±1,825 mm2, respectively), compared to control (P<0.01), hs-CRP, IL-6, and FMD remained constant in both exercise groups even after completion of the 12-week exercise intervention. Insulin sensitivity improved only in patients subjected to vigorous exercise (VEG). Visceral fat loss was observed only in patients subjected to moderate exercise (MEG). At one-year follow up, these values had all returned to baseline. Conclusion: Exercise vigorous enough to result in significant weight and fat reduction did not ameliorate inflammation and endothelial dysfunction as measured at the end of a 12-week exercise intervention, nor did it result in sustained improvements in insulin sensitivity in type 2 diabetic subjects. (Korean Diabetes J 33:401-411, 2009)

Rescue strategies against non-steroidal anti-inflammatory drug-induced gastroduodenal damage

Lim, Yun Jeong,Lee, Jeong Sang,Ku, Yang Suh,Hahm, Ki-Baik Blackwell Publishing Asia 2009 Journal of gastroenterology and hepatology Vol.24 No.7

<P>Abstract</P><P>Non-steroidal anti-inflammatory drugs (NSAIDs) are the most commonly prescribed drugs worldwide, which attests to their efficacy as analgesic, antipyretic and anti-inflammatory agents as well as anticancer drugs. However, NSAID use also carries a risk of major gastroduodenal events, including symptomatic ulcers and their serious complications that can lead to fatal outcomes. The development of “<I>coxibs</I>” (selective cyclooxygenase-2 [COX-2] inhibitors) offered similar efficacy with reduced toxicity, but this promise of gastroduodenal safety has only partially been fulfilled, and is now dented with associated risks of cardiovascular or intestinal complications. Recent advances in basic science and biotechnology have given insights into molecular mechanisms of NSAID-induced gastroduodenal damage beyond COX-2 inhibition. The emergence of newer kinds of NSAIDs should alleviate gastroduodenal toxicity without compromising innate drug efficacy. In this review, novel strategies for avoiding NSAID-associated gastroduodenal damage will be described. </P>

고탄소수 탄화수소계 연료 제트의 화염 부상 특성

윤정구(Jeong Ku Yun),차민석(Min Suk Cha),정석호(Suk Ho Chung) 한국자동차공학회 1999 한국 자동차공학회논문집 Vol.7 No.3

Life Science : Ascochlorin lnhibits Growth Factor-lnduced HIF-1a Activation and Tumor-Angiogenesis Through the Suppression of EGFR/ERK/p 70S6K Signaling Pathway in Human Cervical Carcinoma Cells

( Ji Hak Jeong ),( Yun Jeong Jeong ),( Hyun Ji Cho ),( Jae Moon Shin ),( Jeong Han Kang ),( Kwan Ku Park ),( Yoon Yub Park ),( Il Kyung Chung ),( Hyeun Wook Chang ),( Jun Ji Magae ),( Shin Sung Kang ) 영남대학교 약품개발연구소 2012 영남대학교 약품개발연구소 연구업적집 Vol.22 No.0

Ascochlorin, a non-toxic prenylphenol compound derived from the fungus Ascochyta viciae, has been shown recently to have anti-cancer effects on various human cancer cells. However, the precise molecular mechanism of this anti-cancer activity remains to be elucidated. Here, we investigated the effects of ascochlorin on hypoxia-inducible factor-1α (HIF-1α) and vascular endothelial growth factor (VEGF) expression in human epidermoid cervical carcinoma CaSki cells. Ascochlorin inhibited epidermal growth factor (EGF)-induced HIF-1α and VEGF expression through multiple potential mechanisms. First, ascochlorin selectively inhibited HIF-1α expression in response to EGF stimulation, but not in response to hypoxia (1% O(2)) or treatment with a transition metal (CoCl(2)). Second, ascochlorin inhibited EGF-induced ERK-1/2 activation but not AKT activation, both of which play essential roles in EGF-induced HIF-1α protein synthesis. Targeted inhibition of epidermal growthfactor receptor (EGFR) expression using an EGFR-specific small interfering RNA (siRNA) diminished HIF-1α expression, which suggested that ascochlorin inhibits HIF-1α expression through suppression of EGFR activation. Finally, we showed that ascochlorin functionally abrogates in vivo tumor angiogenesis induced by EGF in a Matrigel plug assay. Our data suggest that ascochlorin inhibits EGF-mediated induction of HIF-1α expression in CaSki cells, providing a potentially new avenue of development of anti-cancer drugs that target tumor angiogenesis. 113: 1302-1313, 2012. ⓒ 2011 Wiley Periodicals. Inc.