• 대한치과교정학회지
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• 제20권2호
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• pp.333-354
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• 1990

This study was designed to analyse vertical dysplasia such as open bite or deep bite in persons with skeletal Class III malocclusion. The subjects consisted of 60 control patients, 40 Class III open bite patients and 40 Class III deep bite patients. The mean age was 19.8 years in the control group, 17.8 years in the Class III open bite group and 16.5 years in the Class III deep bite group. The results were as follows: 1. In Class III malocclusion patients, the characteristics of the vertical dysplasia are under the palatal plane. 2. In Class III malocclusion patients, the items showing the characteristics of the vertical dysplasia are mandibular plane angle, lower gonial angle, lower facial height, dental height & inclination of the upper first molar, interincisal angle, maxillary & mandibular occlusal plane angle. 3. In Class III malocclusion patients, LPFH/LAFH ratio shows the highest significance among the facial height ratios. 4. In Class III malocclusion patients, open bite group has a upward cant of maxillary occlusal plane & downward cant of mandibular occlusal plane. And deep bite group has a downward cant of maxillary occlusal plane & upward cant of mandibular occlusal plane. 5. In Class III malocclusion patients, the molar teeth of the open bite group are measially inclined and those of the deep bite group are upright.

• 공업화학
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• 제16권2호
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• pp.206-211
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• 2005

백금과 티탄늄-이리듐전극으로 0.5 M의 철(II)과 코발트(II) 이온을 함유한 8.0 M의 질산용액 중에서 분자량이 1000, 4000, 20000인 폴리에틸렌글리콜류의 매개전해산화를 하였다. Fe(III)/Fe(II)와 Co(III)/Co(II) 산화환원계를 이용하여 전류밀도, 전극종, 전해질농도, 제거효율 등을 검토하였다. 백금전극 상에서 $0.67A/cm^2$의 전류밀도로 180~210 min 간 Fe(III)/Fe(II)와 Co(III)/Co(II) 전해환원계에서 매개전해산화에 의하여 폴리에틸렌글리콜류는 탄산가스로 분해되었다. 매개전해산화시 폴리에틸렌글리콜류의 제거효율은 Fe(III)/Fe(II) 산화환원계보다 Co(III)/Co(II) 산화환원계가 우수하였고 분자량이 1000, 4000, 20000인 폴리에틸렌글리콜류의 매개전해산화 제거효율은 100%이었다.

• Bulletin of the Korean Chemical Society
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• 제28권8호
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• pp.1335-1340
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• 2007

β-Ketoacyl acyl carrier protein synthase (KAS) III is a particularly attractive target in the type II fatty acid synthetic pathway, since it is central to the initiation of fatty acid synthesis. Enterococcus faecalis, a Grampositive bacterium, is one of the major causes of hospital acquired infections. The rise of multidrug-resistant of most bacteria requires the development of new antibiotics, such as inhibition of the KAS III. In order to block the fatty acid synthesis by inhibition of KAS III, at first, three dimensional structure of Enterococcus faecalis KAS III (efKAS III) was determined by comparative homology modeling using MODELLER based on x-ray structure of Staphylococcus aureus KAS III (saKAS III) which is a gram-positive bacteria and is 36.1% identical in amino acid sequences with efKAS III. Since His-Asn-Cys catalytic triad is conserved in efKAS III and saKAS III, substrate specificity of efKAS III and saKAS III and the size of primer binding pocket of these two proteins are expected to be similar. Ligand docking study of efKAS III with naringenin and apigenin showed that naringenin docked more strongly with efKAS III than apigenin, resulting in the intensive hydrogen bond network between naringenin and efKAS III. Also, only naringenin showed antibacterial activity against E. faecalis at 256 μg/mL. This study may give practical implications of flavonoids for antimicrobial effects against E. faecalis.

• 한국산학기술학회논문지
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• 제10권3호
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• pp.620-624
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• 2009

아포리포포린-III를 꿀벌부채명나방 종령유충 혈림프에서 젤크로마토그래피 (Sephadex G-100)와 이온교환크로마토그래피 (CM-52)방법을 이용하여 분리, 정제하였다. 본 연구에서는 아포리포포린-III가 꿀벌부채명나방의 성충난소에 의해 흡수되는 지를 조사하였다. 성충난소조직을 형광물질로 표지한 아포리포포린-III와 상온에서 30분간 배양하였다. 배양결과를 형광현미경과 전기영동을 이용하여 확인한 결과 형광물질로 표지된 아포리포포린-III가 성충난소로 흡수된다는 사실을 알았다.

• 공업화학
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• 제32권1호
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• pp.75-82
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• 2021

본 연구는 건자재용 목재 및 플라스틱의 화재위험성 평가에 대하여 새로 고안된 화재성능지수-III (FPI-III), 화재성장지수-III (FGI-III), 화재위험성지수-IV (FRI-IV)를 중심으로 조사하였다. 시험편은 삼나무, 적송, PMMA, PVC를 사용하였다. 화재 특성은 시험편에 대하여 콘칼로리미터(ISO 5660-1) 장비를 이용하여 조사하였다. 연소반응 후 측정된 화재성능지수-III는 PMMA를 기준으로 1.0~15.0으로 나타났다. 화재성능지수-III에 의한 화재위험성은 PVC, 적송, 삼나무, PMMA 순서로 증가하였다. 화재성장지수-III는 PMMA를 기준으로 0.5~3.3으로 나타났다. 화재성장지수-III에 의한 화재위험성은 PVC, PMMA, 적송, 삼나무의 순서로 증가하였다. 모든 시편의 CO 피크농도는 106~570 ppm으로 측정되었다. 결론적으로 체적밀도가 낮은 삼나무와 PMMA와 같이 휘발성 유기물질을 다량 함유한 재료는 화재성능지수-III가 낮고, 화재성장지수-III가 높으므로 화재로 인한 화재위험성이 높은 것으로 이해된다. 이는 화재위험성지수-IV와 일치하였다.

• Journal of Astronomy and Space Sciences
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• 제35권1호
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• pp.7-18
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• 2018

We have investigated the intensities and full width at half maximum (FWHM) of the high dispersion spectroscopic N III emission lines of AG Peg, observed with the Hamilton Echelle Spectrograph (HES) in three different epochs at Mt. Hamilton's Lick Observatory. The earlier theoretical Bowen line study assumed the continuum fluorescence effect, presenting a large discrepancy with the present data. Hence, we analyzed the observed N III lines assuming line fluorescence as the only suitable source: (1) The O III and N III resonance line profiles near ${\lambda}$ 374 were decomposed, using the Gaussian function, and the contributions from various O III line components were determined. (2) Based on the theoretical resonant N III intensities, the expected N III Bowen intensities were obtained to fit the observed values. Our study shows that the incoming line photon number ratio must be considered to balance at each N III Bowen line level in the ultraviolet radiation according to the observed lines in the optical zone. We also found that the average FWHM of the N III Bowen lines was about $5km{\cdot}s^{-1}$ greater than that of the O III Bowen lines, perhaps due to the inherently different kinematic characteristics of their emission zones.

• 한국산학기술학회논문지
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• 제17권10호
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• pp.199-203
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• 2016

아포리포포린-III (apoLp-III)를 꿀벌부채명나방 종령 유충 혈림프로부터 KBr 농도구배 초원심분리와 겔크로마토그래피(Sephadex G-100)를 이용하여 분리, 정제하였다. KBr 농도구배 초원심분리가 끝난 후, 리포포린을 제외한 분획 (lipophorin-free fractions)을 겔크로마토그래피 시료로 사용하였으며, 겔크로마토그래피를 행한후 sodium dodecyl sulfate (SDS)-전기영동으로 apoLp-III의 정제를 확인하였다. 또한, 본 연구에서는 유충 혈림프로부터 정제된 apoLp-III가 꿀벌부채명나방의 성충 정소에 의해 흡수되는 지를 조사하였다. 우화한 지 1일 또는 2일된 성충으로부터 성충 정소를 차가운 링거액에서 분리한 후 조직 배양의 시료로 사용하였다. 순수 정제한 apoLp-III를 dimethyl sulfoxide (DMSO)에 녹인 형광물질 fluorescein isothiocyanate (FITC)와 상온에서 계속 저어가면서 1시간 동안 배양하였다. FITC로 표지된 apoLp-III (FITC-labeled apoLp-III)를 Sephadex G-25 PD-10 column을 이용하여 정제하고 확인하였다. 정제된 FITC-labeled apoLp-III와 성충 정소 조직을 상온에서 30분간 배양하였다. 배양 후 형광현미경 (fluorescence Axioskop microscope)과 SDS-전기영동을 이용하여 FITC-labeled apoLp-III가 정소 조직으로 들어가는 지의 여부를 확인하였다. 그 결과 FITC-labeled apoLp-III가 성충 정소로 흡수된다는 사실을 알 수 있었다.

• 대한화학회지
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• 제25권4호
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• pp.270-274
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• 1981

Al(III)과 Cr(III)을 여러 양이온과 음이온의 공존하에서 가리움제를 사용하지 않고 Bismark Brown R{4,4'[(4-methyl-1,3-phenylene)bis(azo)]-bis(6-methyl-1,3-benzenediamine)dihydrochloride)을 사용하여 정량하였다. 그러나 타르타르산과 시트르산이 공존하면 방해하였다. Al(III)과 Cr(III)은 같은 파장에서 최대흡광도를 나타내므로 Cr(III)을 Cr(VI)으로 산화시키면 Al(III)과 Cr(III)을 선택적으로 정량할 수 있었다.

• 대한치과교정학회지
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• 제17권1호
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• pp.63-72
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• 1987

This is to investigate the difference between craniofacial correlation of Angle's class III malocclusion and that of normal occlusion. For this investigation, 28 adult males and famales, who have class III malocclusion, and 35 adult males and 46 adult famals., who have normal occlusion were selected to measure actual dimension of cranial base and to investigate ratio of various parts of maxillofacial skeleton against cranial base. Class III malocclusion were, also , classified based on SNA and SNB angle in normal range. Results were as follows. 1. In class III malocclusion, actual dimension of cranial base were appeared to be less than normal occlusion in both sex. 2. In class III malocclusion, values were less than normal occlusion in BN/ptm-A in both sex, but had no significance between two. 3. In class III malocclusion, ramal inclination, mandible inclination, BN/Go-Pog, lower genial angle were appeared to be greater. Thus, characteristic mandibular protrusive appearance of class III malocclusion was due to relative ratio and morphologic characteristic of mandibular body dimension against cranial base. 4. In class III malocclusion, upper incisors were labially tilted and lower incisors were lingually tilted compared to normal occlusion. 5. In typing of class III malocclusion, the most common type was found to be one which maxillas were in normal range, while mandibles were in protrusive tendency.

• Molecules and Cells
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• 제27권3호
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• pp.291-297
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• 2009

Apolipoprotein (apo) C-III is a marker protein of triacylglycerol (TG)-rich lipoproteins and high-density lipoproteins (HDL), and has been proposed as a risk factor of coronary heart disease. To compare the physiologic role of reconstituted HDL (rHDL) with or without apoC-III, we synthesized rHDL with molar ratios of apoA-I:apoC-III of 1:0, 1:0.5, 1:1, and 1:2. Increasing the apoC-III content in rHDL produced smaller rHDL particles with a lower number of apoA-I molecules. Furthermore, increasing the molar ratio of apoC-III in rHDL enhanced the surfactant-like properties and the ability to lyse dimyristoyl phosphatidylcholine. Furthermore, rHDL containing apoC-III was found to be more resistant to particle rearrangement in the presence of low-density lipoprotein (LDL) than rHDL that contained apoA-I alone. In addition, the lecithin:cholesterol acyltransferase (LCAT) activation ability was reduced as the apoC-III content of the rHDL increased; however, the CE transfer ability was not decreased by the increase of apoC-III. Finally, rHDL containing apoC-III aggravated the production of MDA in cell culture media, which led to increased cellular uptake of LDL. Thus, the addition of apoC-III to rHDL induced changes in the structural and functional properties of the rHDL, especially in particle size and rearrangement and LCAT activation. These alterations may lead to beneficial functions of HDL, which is involved in anti-atherogenic properties in the circulation.