McNamara분석법에 의한 Ⅲ급 부정교합 아동의 두부방사선 계측학적 연구

양규호,김지영,최남기 대한소아치과학회 2001 大韓小兒齒科學會誌 Vol.28 No.3

정상교합아동과 비교적 조기치료가 요구되는 Ⅲ급 부정교합을 갖는 성장기 아동에서 측모 두부 방사선 계측치의 평균치를 산출하여 진단 및 치료계획 수립에 도움이 되고자 전남대학교병원 소아치과에 내원한 7세에서 9세사이의 17급 부정교합 아동 83명과 안모가 단정하고 정상교합을 갖는 광주지역 초등학생 84명을 대상으로 측모 두부 방사선촬영을 하여 McNamara분석법을 이용한 계측치를 비교 분석하여 다음과 같은 결론을 얻었다. 1. 남아에서 정상교합자와 Ⅲ급 부정 교합자간의 계측치에서 Effective maxillary length.Maxillomandibular differential, Facial axis, Nasion perp to pogonion, Point A perp to Mx 1, A-Pog line to Mn 1의 항목이 유의성 있는 차이를 나타내었다(p<0.01) 2.여아에서 정상교합자와 Ⅲ급 부정교합자간의 계측치에서 Nasion Perp. to Point A(p<0.05), Erective Mandibular lengh, Effective Maxillary lengh, Maxillomandibular differential, Mandibular plane angle, Point A perp to Mx 1, A-Pog line to Mn 1의 항목이 유의성 있는 차이를 나타내었다(p<0.01). 3. Effective Mandibular lengh는 남아에서 정상교합자와 Ⅲ급 부정교합자간에 차이가 없었으나, 여아에서는 유의한 차이가 있었다(p<0.01) 그러나 Effective Maxillary lengh는 Ⅲ급 부정교합자가 남녀 모두에서 정상교합자보다 유의성 있게 짧았다(p<0.01) . 4. Anterior lower facial height는 남녀 모두 정상교합자와 Ⅲ급 부정교합자의 비교에서 유의한 차이가 없었다 7. 남아와 여아의 계측치 비교에서 Anterior lower facial height와 Mandibular plane angle은 정상교합자와 Ⅲ급 부정 교합자 모두에서 유의한 차이가 있었다(p<0.01) . In the growing children with normal occlusion and class Ⅲ malocclusion who need the early treatment to be helped to diagnose and to set up treatment plan by calculating the mean values of the lateral cephalometric measurements, cephalometric measurements by McNamara alalysis were achieved and compared on both the 84 elementary school children with normal occlusion and 83 class Ⅲ malocclusion children at the age of 7 to 9 in Kwangju city and the results were as follows : 1. On the boys group, between normal occlusion and class Ⅲ malocclusion, Effective maxillary length, Maxillomandibular differential, Facial axis. Nasion perpendicualr to pogonion, Point A perp to Mx 1, and A-Pog line to Mn 1 showed significant differences(p<0.05) . 2. On the girls group, between normal occlusion and class Ⅲ malocclusion significant differences were shown in Effective Maxillary length, Maxillomandibular differential, Mandibular plan angle, Nasion perpendicular to Point A, Point A perp to Mx 1 A-Pog line to Mn 1(p<0.01). 3 There were no significant differences between normal occlusion and class Ⅲ malocclusion of boys group but siginificant differences between them of girls group in Effective mandibular length(p<0.01), On the boys and girls group, Effective maxillary length of class Ⅲ malocclusion was shorter than that of normal occlusion. 4. There were no significant differences between normal occlusion and class Ⅲ malocclusion both in boys and girls at Anterior lower facial height. 5. There were significant differences between boys and girls both in class Ⅲ malocclusion and normal occlusion at Anterior lower facial height and Mandibular plane angle(p<0.01) .

일부 도시지역 인문고교생의 체격과 영양상태에 관한 연구

윤태영,최중명,박순영,유동준,김형석,구도서,박양원 慶熙大學校 醫科大學 1986 慶熙 醫大 論文集 Vol.11 No.1

연마기구에 따른 심미 치아 수복재료의 표면 거칠기에 관한 비교 연구

박은혜,양규호,최남기 大韓小兒齒科學會 2003 大韓小兒齒科學會誌 Vol.30 No.3

소아치과 임상에서 자주 사용하고 있는 심미 수복재료는 마무리와 연마 과정을 통해 내구성과 심미성이 향상된 수복물을 얻을 수 있다. 본 연구에서는 수복재료 종류에 따른 연마기구의 적합성과 사용된 연마기구 간의 효율성을 비교하고자 하였다. Z250(3M, USA), Helionolar(Ivoclar Vivadent, USA), Dyract AP(Dentsply, USA), Fuji Ⅱ LC(GC, Japan)를 이용하여 시편을 제작하고, 연마기구의 Enhance(Ivoclar Vivadent, USA), Sof-Lex(3M, USA), CompoSite(Shoufu, Japan)를 적용하여 연마하였다. 각 제품마다 제작된 시편 중에 어떠한 연마 과정도 거치지 않은 5개의 시편을 대조군으로 사용하였다. 이 시편들의 표면 거칠기(R_a value, ㎛)를 측정하고, 주사전자현미경으로 관찰하여 다음과 같은 결과를 얻었다. 1. 수복재료에 따른 표면 거칠기를 비교한 결과 Z250이 가장 낮은 표면 거칠기를 나타냈으나 다른 수복재료와 비교하여 유의한 차이는 없었다(p>0.05). 2. 네 가지 수복재료는 대조군에서 가장 평활한 표면을 얻었고, 모든 연마 과정은 표면 거칠기를 증가시켰다. 3. 세 가지 연마기구 중 Sof-Lex가 가장 평활한 표면을 형성하였으며, Sof-Lex와 Enhance에 의한 표면 거칠기는 유의한 차이를 보였다(p<0.05). 4. 주사전자현미경 관찰 시 네 가지 수복재료의 대조군은 실험군에 비해 균일한 표면을 나타냈다. Proper finishing and polishing of tooth restorations enhance the esthetics and the longevity of the restored tooth. The aims of this study were to identify an appropriate polishing system for each esthetic restorative material(Z250, Heliomolar, Dyract AP, Fuji Ⅱ LC), and to compare the efficiency of polishing systems(Enhance, Sof-Lex, CompoSite), The control group remains untouched. The results were as follows: 1. There was no significant difference of surface roughness among the materials, while a roughness value of Z250 was the lowest of all. 2. The smoothest surface was produced by Mylar sheet on all materials. The polishing procedures, however, increased a roughness value. 3. The smoothest surfaces were produced by Sof-Lex, and there was significant difference of surface roughness between Sof-Lex and Enhance systems. 4. The smoothest surfaces on the control group showed many scratches after the polishing procedures in the SEM findings.

국내 다층지반의 지반물성치 및 토압에 관한 고찰

구자갑,김운학,최정호,유영화,정양규 한경대학교 2004 論文集 Vol.26 No.1

This paper study on soil properties and earth pressure at the domestic multi layer. Reliable predictions of the movement of earth retaining structures and the ground adjacent to the braced walls in urban excavation are often difficult due to many variable factors. Also, Unpredictable behavior of ground and retaining structure due to variation of the above factors may cause considerable damage to the adjacent structures, and cost many of human lives as a results of retaining wall failure. The earth pressure at the retaining walls was measured at total 13 numbers sites and Peck's empirical earth pressures adapted at the design stage. The geotechnical properties by this research was proposed as a preliminary design guide line in urban excavation where controling ground movement and safety assurance of adjacent structure. The earth pressure of rock masses were found to be 70.14% of Peck's earth pressure and the earth pressure of soil were found to be 44.4% of Peck's earth pressure. It is indicated that the design earth pressures of a retaining wall is

송아지고기 소시지와 시중에 판매되는 우육과 돈육 소시지 제품의 저장특성 비교

이주호, 최정석, 이현진, 정구용, 최양일 忠北大學校 農業科學硏究所 2013 農業科學硏究 Vol.29 No.1

This study was undertaken to compare the storage characteristics between veal sausage and commercial pork and beef sausages in Korean domestic market. We manufactured 3_types of sausages and purchased 2_types of sausages in the market: T1(B-company product), T2(O-company product) and we made T3(smoked veal sausage), T4(smoked veal sausage with pepper) and T5(cooked veal sausage) products. During 20 days of storage at 4oC, T5 showed significantly higher in TBA value and VBN value (p<0.05). But TBA and VBN values showed normal range in all products. T3, T4, and T5 showed higher total microbial count than T1 and T2 (p<0.05). According to the result, beef and pork sausages in the market showed different total microbial count and VBN values from those made in laboratory. This result could be come from the different additives used and manufacturing processes. However, all products can be stored up to 20 days in the cooler.

급성 조증에서 기분안정제와 리스페리돈의 병합 투여 효과 : 다기관 개방연구

김광수,배치운,윤진상,김영훈,이양현,지익성,이철,송혜경,최성구,박원명 大韓神經精神醫學會 2005 신경정신의학 Vol.44 No.2

Ohjective : The primary purpose of this study was a replication of the effectiveness and tolerability of rispehdone in the treatment of patients with acute mania in very larger cohon in naturalistic treatment setting to extend the data on the effect and tolerability of risperidone in the treatment of patients with acute mania to Asian population. Methods : A total of 909 patients with DSM-TV criteria of bipolar disorder current manic and hypomanic episode, entered this large, open, multicentre study. The Young Mania Rating Scale (YMRS), Clinical Global Impression (CGI) and Simpson-Angus Rating Scale (SARS) were measured at baseline and weeks 1, 3 and 6, for the assessment of effectiveness and extra-pyramidal symptom (EPS). Results : This study showed statistically significant reduction of scores on the YMRS and CGI-s (mean change=-23.5±11.8, p<0.0001 ; mean change=-2.7±1.5, p<0.0001, respectively) from the baseline to the endpoint (week 6). Number of patients with 50% reduction or more in the YMRS and CGI-s scores was 693 (77.8%) and 630 (70.7%) at endpoint, respec-tively. There were no statistically significant increments of scores on SARS. Risperidone was generally well tolerated. Conclusion : The present larger open study demonstrates that hsperidone add-on therapy is effective and tolerable in treat-ment of bipolar disorder, replicating results in various controlled and uncontrolled studies from Western countries.

교실 내 벽면녹화를 통한 초미세먼지(PM2.5) 저감 효과 평가

최치구(Chi-Ku Choi),양호형(Ho-Hyeong Yang),김호현(Ho-Hyun Kim),권혁구(Hyuk-Ku Kwon) 한국환경보건학회 2023 한국환경보건학회지 Vol.49 No.4

Background: The indoor air quality of classrooms, in which the capacity per unit area is high and students spend time together, must be managed for safety and comfort. It is necessary to develop an eco-friendly indoor air quality reduction method rather than biased management that relies solely on air purifiers. Objectives: In this study, plants and air purifiers were installed in middle school classrooms to evaluate the indoor PM2.5 reduction. Methods: Four middle school classrooms were selected as test beds. Air quality was monitored in real-time every one minute using IoT equipment installed in the classrooms, corridors, and rooftops. After measuring the background concentration, plants and air purifiers were installed in the classroom and the PM2.5 reduction effect was analyzed through continuous monitoring. Results: After installing the plants and air purifiers, the average PM2.5 concentration was 33.7 μg/m3 in the classrooms without plants and air purifiers, 25.6 μg/m3 in classrooms with plants only, and 21.7 μg/m3 in classrooms with air purifiers only. In the classroom where plants and air purifiers were installed together, it was 20.0 μg/m3. The reduction rates before and after installation were 4.5% for classrooms with plants only, 16.5% for classrooms with air purifiers only, and 27.6% for classrooms with both plants and air purifiers. The I/O ratio, which compares the concentration of PM2.5 in classrooms with corridors and outside air, also showed the lowest in the order of plants and air purifiers, air purifiers, and plant-only classrooms. Conclusions: The PM2.5 reduction effect of using plants was confirmed, and it is expected to be used as basic data for the development of environmentally-friendly indoor air quality improvement methods.

Isolation of a Phytase-Producing Bacillus sp.KHU-10 and Its Phytase Production

Choi, Yang Mun,Noh, Dong Ouk,Cho, Sung Ho,Lee, Hyo Ku,Suh, Hyung Joo,Chung, Soo Hyun 한국미생물 · 생명공학회 1999 Journal of microbiology and biotechnology Vol.9 No.2

A bacterial strain producing high level of an extracellular phytase was isolated from cooked rice and identified as a strain of Bacillus sp. and designated as Bacillus sp. KHU-10. Optimum culture conditions were investigated for the maximum productivity of phytase by Bacillus sp. KHU-10. 1.0% Maltose and 1.0% peptone with 0.5% beef extract were the best carbon source and nitrogen source, respectively. The addition of CaC1_2 stimulated the enzyme productivity with concentration between 0.01% and 0.2%, in the medium. Although sodium phosphate increased the cell mass, the enzyme activity decreased. Calcium phytate and wheat bran containing phytate did not enhance the enzyme production. Under the optimum medium. the production of the phytase reached the highest level of 0.2 unit/㎖ after 4 days of incubation.

Transcriptional regulation of human Oct4 by steroidogenic factor-1

Yang, Heung-Mo,Do, Hyun-Jin,Kim, Dong-Ku,Park, Jin-Ki,Chang, Won-Kyong,Chung, Hyung-Min,Choi, Sang-Yun,Kim, Jae-Hwan Wiley Subscription Services, Inc., A Wiley Company 2007 Journal of cellular biochemistry Vol.101 No.5

<P>Oct4 encodes a transcription factor that is involved in the maintenance of self-renewal in stem cells. Recently, the molecular mechanisms that regulate Oct4 expression have come under investigation. In this study, we demonstrate that the orphan nuclear receptor steroidogenic factor-1 (SF-1) behaves as a transcriptional activator of human Oct4 (hOct4) through direct interaction with a SF-1 binding element in the hOct4 proximal promoter. We found that Oct4 and SF-1 were co-expressed in undifferentiated human embryonal carcinoma NCCIT cells and downregulated during retinoic acid-mediated differentiation. We examined the functional role played by SF-1 in regulation of hOct4 transcription using a luciferase reporter assay and Western blot analysis. Overexpression of SF-1 increased up to about threefold hOct4 promoter activity and endogenous hOct4 protein expression. Sequence analysis of the hOct4 promoter revealed that the transcriptional activity was closely linked to Conserved Regions 1 (CR1) and 2 (CR2), which contain three putative SF-1-binding sites (1st, 2nd, and 3rd SF-1). Binding assays and mutagenesis of binding sites indicated that the 1st and 2nd SF-1 elements (in CR1 and CR2, respectively) might be important cis-regulatory elements in hOct4 promoter activity. However, differences in response to SF-1 overexpression between wild-type and mutant hOct4 promoters revealed that the 1st SF-1 element is the key binding site for SF-1-mediated transcriptional activation. Thus, our data indicate that SF-1 plays a crucial role in the regulation of hOct4 transcription through direct binding to the 1st SF-1 in CR1 of the hOct4 proximal promoter. J. Cell. Biochem. 101:1198–1209, 2007. © 2007 Wiley-Liss, Inc.</P>

A Facile Way to Control the Number of Walls in Carbon Nanotubes through the Synthesis of Exposed-Core/Shell Catalyst Nanoparticles

Choi, Kyung Min,Augustine, Saji,Choi, Jung Hoon,Lee, Ju Ho,Shin, Weon Ho,Yang, Seong Ho,Lee, Jeong Yong,Kang, Jeung Ku WILEY-VCH Verlag 2008 Angewandte Chemie Vol.47 No.51

<B>Graphic Abstract</B> <P>Wall Control: An innovative synthesis of nanotubes with precise control of the number of walls in nanotubes (see picture) makes use of exposed-core/shell structured catalyst nanoparticles, which are fabricated by consecutive plasma and chemical treatment processes after micelle patterning of metal particles. <img src='wiley_img/14337851-2008-47-51-ANIE200803311-content.gif' alt='wiley_img/14337851-2008-47-51-ANIE200803311-content'> </P>