Ⅲ급 부정교합자의 양악 수술과 하악 편악 수술 시 연조직 변화에 관한 비교 연구

박영국,장인희,이영준 대한치과교정학회 2006 대한치과교정학회지 Vol.36 No.1

악교정 수술 시행 시 연조직 변화에 대한 대부분의 연구는 Ⅱ급 부정교합을 대상으로 하였다. 또한 수술 방법에 따른 연조직 변화에 대한 비교 연구가 부족하였다. 따라서 이 연구는 골격성 Ⅲ급 부정교합자에서 상악골 전진술과 하악골 후퇴술을 동시에 시행한 양악 수술과 하악골 편악 수술 시행 시, 경조직과 연조직 측모 및 연조직 두께의 변화를 관찰하고, 수술 전후 변화의 상관성을 산출하며, 경조직 변화에 수반하는 연조직 변화의 비율을 산출하여 교정-악교정 수술 복합 치료 계획 수립과 결과의 예측에 이용하고자 시행되었다. 경희대학교 치과병원 교정과에 내원하여 골격성 Ⅲ급 부정교합자로 진단받은 환자 52명을 대상으로 하여, Le Fort I osteotomy를 이용한 상악골 전방이동술과 시상분할골절단술을 이용한 하악골 후퇴술을 시행한 양악 수술군 26명과 하악골 후퇴술만을 시행한 편악 수술군 26명으로 구분하여, 수술 전후 측모두부방사선규격사진을 계측, 분석하여 다음과 같은 결과를 얻었다. 양악 수술군은 골격 변화량의 72.4% 비율로 상순 부위 연조직의 전방 이동을 보였으며, 편악 수술군은 통계적으로 유의한 변화를 보이지 않았다. 비순각은 양악 수술군에서 편약 수술군에 비해 더 크게 증가하였다. 이순각은 편악수술군에서 더 크게 감소하였다. 하악골의 후방 이동에 따른 연조직 pogonion의 후방 이동은 양악 수술군에서 98%, 편악 수술군에서 109%로 편악 수술군에서 더 크게 나타났다. 양악 수술군에서는 편악 수술군에 비하여 경조직의 변화에 수반하는 상순에서의 큰 변화가 나타났다. 편악 수술군에서는 상순의 변화는 미약하엿으며, 하순 및 이부의 변화가 양악 수술군에 비해 두드러지게 나타났다. Numbers of postulations lie on the difference of integumental changes with two major surgical remedies of one jaw vs. two jaw surgery in skeletal Class Ⅲ malocclusion. Accordingly it was the aim of the study to elucidate the skeletal profile changes with an accompanying disposition of soft tissues, consequently to yield the correlation and ratio of soft tissue changes with two types of surgical procedures, which in turn make it possible to predict the soft tissue outcomes by means of assembled regression equations. Cephalometric headfilms of fifry two adult skeletal Class Ⅲ comprised of 26 maxillary advancement by Le Fort I osteotomy and mandibular setback by sagittal split ramus osteotomy simultaneously (double jaw surgery, group A), 26 mandibular setback alone (one jaw surgery, group B) were statistically analyzed. Group A manifested 72.4% soft tissue advancement to skeletal changes in the upper lip area, while group B appeared to have no statistically significant changes. The nasolabial angle showed more increment in group A than in group B, whereas the mentolabial angle illustrated more reduction in group B. The backward movement of soft tissue pogonion to skeletal change revealed 98% in group A, and 109% in group B. The double jaw surgery group characteristically revealed remarkable integ umental change in the upper lip area, while the one jaw surgery had major effects in the lower lip and soft tissue pogonion areas.

Projections of summertime ozone concentration over East Asia under multiple IPCC SRES emission scenarios

Lee, Jae-Bum,Cha, Jun-Seok,Hong, Sung-Chul,Choi, Jin-Young,Myoung, Ji-Su,Park, Rokjin J.,Woo, Jung-Hun,Ho, Changhoi,Han, Jin-Seok,Song, Chang-Keun Elsevier 2015 Atmospheric environment Vol.106 No.-

<P><B>Abstract</B></P> <P>We have developed the Integrated Climate and Air Quality Modeling System (ICAMS) through the one-way nesting of global–regional models to examine the changes in the surface ozone concentrations over East Asia under future climate scenarios. Model simulations have been conducted for the present period of 1996–2005 to evaluate the performance of ICAMS. The simulated surface ozone concentrations reproduced the observed monthly mean concentrations at sites in East Asia with high R<SUP>2</SUP> values (0.4–0.9), indicating a successful simulation to capture both spatial and temporal variability. We then performed several model simulations with the six IPCC SRES scenarios (A2, A1B, A1FI, A1T, B1, and B2) for the next three periods, 2016–2025 (the 2020s), 2046–2055 (the 2050s), and 2091–2100 (the 2090s). The model results show that the projected changes of the annual daily mean maximum eight-hour (DM8H) surface ozone concentrations in summertime for East Asia are in the range of 2–8 ppb, −3 to 8 ppb, and −7 to 9 ppb for the 2020s, the 2050s, and the 2090s, respectively, and are primarily determined based on the emission changes of NO<SUB>x</SUB> and NMVOC. The maximum increases in the annual DM8H surface ozone and high-ozone events occur in the 2020s for all scenarios except for A2, implying that the air quality over East Asia is likely to get worse in the near future period (the 2020s) than in the far future periods (the 2050s and the 2090s). The changes in the future environment based on IPCC SRES scenarios would also influence the change in the occurrences of high-concentrations events more greatly than that of the annual DM8H surface ozone concentrations. Sensitivity simulations show that the emissions increase is the key factor in determining future regional surface ozone concentrations in the case of a developing country, China, whereas a developed country, Japan would be influenced more greatly by effects of the regional climate change than the increase in emissions.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Change in ozone level is determined by the combination of NO<SUB>x</SUB> and NMVOC emissions. </LI> <LI> Ozone level over East Asia would get worse in the near future (the 2020s) than far future. </LI> <LI> A high-concentration event generally increases and more frequently occurs in the future. </LI> <LI> Change in ozone air quality in a developing country depends more on emissions change. </LI> <LI> Change in ozone air quality in a developed country depends more on climate change. </LI> </UL> </P>

개에서 동소성 간이식술시의 대사 및 혈역학적 변화

이창준,홍순용,신근만,최영룡,이영주,문종선 대한마취과학회 1993 Korean Journal of Anesthesiology Vol.26 No.3

Skilled and experienced anestheia is of great importance for patients undergoing orthotopic liver transplantation, because of multiple preexisting medical problems in such patients as well as the intraoperative problems of rapid hemodynamic, metabolic, and coagulation changes. In this study, the intraoperative hemodynamic and laboratory data were analyzed in ten dogs that underwent an orthotopic liver transplantation procedure by veno-venous bypass using Biopump. Liver transplantation can be divided into three distinct periods: stage I, or preanhepatic stage, which begins with the induction of anesthesia and continues until cross clamping of portal vein and IVC; stage II, or anhepatic stage, which begins at the anhepatic time and continues until the donor liver is reperfused by the recipients circulating blood; and stage III, or postanhepatic stage, which begins at the time of reperfusion and continues until the end of surgical procedure. The hemodynamic changes at the time of IVC and portal vein cross clamping were decreases in CVP, PCWP, and pulmonary artery pressure in spite of using Biopump. The significant metabolic alternations during anhepatic stage were decrease in blood glucose levels and increase in blood lactate levels. The more significant hemodynamic changes occurred at the time of reperfusion. Systolic pressure decreased suddenly to 58±6 mmHg and cardiac output decreased to 1.08±0.1l L/min. However heart rate, pulmonary artery pressure, CVP, and PCWP did not change significantly. During stage III, hyperglycemia occurred quite frequently. Significant abnormal coagulation chages could not be found, probably because the dogs were healthy. In conclusion, during anhepatic stage, we have to compensate for alternations of fluid balance. At the time of reperfusion, we should prevent severe hemodynamic changes and treat them immediately if they occur. However, it seems that glucose administration is not necessary to the liver recipient during stage II because there is no significant hemodynamic depression e to hypoglycemia at this time and hyperglycemia occurs later

장기간 수영훈련이 중년여성의 혈장 지질 및 아포단백질에 미치는 영향

김영준,장성동,어경철 동아대학교 스포츠과학연구소 2000 스포츠科學硏究論文集 Vol.18 No.-

The purpose of this study is to analyze the effects of long-term swimming excercise on thefat and aplipoprotein of middle-aged women. For the purpose, 14 middle-aged women who have no disease and do not any regular excercise are selected. They are divided into two groups. One is an exercise group(swimming group, Age : 39.0±2.12) consisting of seven members who are to make swimming exercise for eight weeks, and the other is a control group(control group, Age : 38.3±3.12). The effects of the exercise on fat and aplioprotein in blood are then examined. In terms of exercising method, the period, time and frequency of the swimming are determined as eight weeks, fifty minutes a day and five days a week respectively, The result of the study is as follows. 1.FFA, TG, TC and TC/HDL in blood plasma significantly decrease than before swimming, but LDL-C and HBL-C show no changes. 2.Aplipoprotein a and b in blood plasma show no changes over the eight weeks' exercise. Consequently, swimming exercise for eight weeks does not have an influence on LDL-C and HDL-C but on FFA, TG, TC and TC/HDL. The intensity, period and frequency of exercise should be maintained for change in cholesterol.

대장암종에서 암관련 유전자들의 Promoter Methylation과 암종 발생 및 진행과의 관게에 대한 연구

정동준,이정은,민영기,조성우,백무준,양승하,김의한,김창진 순천향대학교 교수학습개발센터 2004 Journal of Soonchunhyang Medical Science Vol.10 No.3

The colorectal corcinoma is one of the most common malignant tumor in Korea and its carcinogenic mechanism has not been elucidated exactly yet. So far, the most common carcinogenic mechanism has been known to be multiple genetic changes. But, the CpG island hypermethylation has been revealed to be one of the most important carcinogenic mechanism second to the genetic changes. The epigenetic changes characteristically imprint and transfer to the next generation without changes of nucleotide sequences. When the CpG island of promoter or 5'- exon 1 of a specific gene is methylated by DNA methyltrasferases (DNMTs), the gene expression is inhibited. Carcinogenic mechansisms by promoter methylation has been well known, but the progression of the cancer has not been elucidated yet. The molecular researches on the carcinogenic mechanisms largely depended on the tumor tissue containing various components of cell, due to difficulties in harvesting pure homogeneous tumor cells. Promoter methylatonof the cancer related genes as APc, hMLH2, p16, DAP-K and MGMT in 50 cases of sporadic colorectal carcinoma was studied. The pure normal colorectal epithelial cells, and cancer cells from superficial and deep invasive portion were harvested respectively by laser captured microdissection(LCM), and DNA was extracted from them. The promoter methylation was studied by methylation specific poymerase reaction (MSP) after bisulfite modification of the DNA and the expression of the genes by immunohistochemistry. The results suggests that promoter methylation of the cancer related genes are closely related with the colorectal carcinogenesis and it occurrs from early phase of carcinogenesis, progressing constantly to the late stage. And the promoter methylation of normal epithelial cells increased by age. The p15, known to be the genes related to hematologic malignancy, was closely related to the colorectal carcinoma as well.

현대적 감정이론을 통한 사상의학(四象醫學)의 성정론(性情論)의 재해석

장준용 ( Jun Young Chang ),강정수 ( Jung Soo Kang ),김병수 ( Byoung Soo Kim ) 대전대학교 한의학연구소 2014 한의학연구소 논문집 Vol.22 No.2

The Sasang constitutional Medicine is the original medicine that is created from the deep studies on former Eastern medical theories by Lee Jae-Ma in the late 19th century. This medicine deals with the interaction between mind and body in great depth. The temperament (the distinct nature and character of an individual, 性情) concept is the theoretical basis which divides man``s constitution into four(Taeyangin, Taeumin, Soyangin and Soumin). This concept is derived from The old oriental Sung-Myung concept which has philosophical meaning. These terms of Sung and Jung also have metaphysical meaning and can not be explained easily. but roughly, The temperament is divided two concept. the distinct nature(性) means human``s nature and the distinct nature(情) means human``s desire. Besides, In Sasang constitution medicine, terms that traditionally represent emotions in asia are used as terminology of temperament. Altough too many aspects about Human``s mind remains unknown yet, According to Neurological evidences, the brain is regarded as the main organ that produces rationality and emotion. Especially the way that brain produces an emotion provides some clues that can tell us how can mind affect body. Emotion is considered as evolutionary adaptation to response correctly against unexpected chaotic external changes. It is something that humans are born with, and causes physical responses simultaneously. Moreover, It can be come out with or without consciousness. The temperament(性情) concept and Emotion have similarity that both play an important role in mind-body correlation. Therefore Neurological researches on emotion were able to help reinterpret temperament(性情) concept. the distinct nature(性) seems to be the emotion that is come out directly from the brain stem, and the distinct nature(情) seems to be the emotion that is produced after neocortex involved thinking process. And the reason why Sung and Jung affect organs differently is explained from the manner that brain expresses emotion.

연구논문 : 연구개발에 대한 조세지원제도의 효과성 연구 및 인력개발준비금 손금산입을 중심으로

서영준 ( Young Jun Seo ),권순창 ( Soon Chang Kweon ) 한국회계학회 2012 회계저널 Vol.21 No.5

본 연구는 R&D 투자 조세지원제도 중 연구 및 인력개발준비금 손금산입에 대한 효과에 대하여 2007년부터 2010년까지의 유가증권시장에 상장된 기업을 대상으로 검증하였다. 연구는 다음 두 가지 방법을 사용하였다. 첫째는 세법 조문에 따라 연구인력개발비를 지출하는 기업 자료를 이용하여 연구 및 인력개발준비금 손금산입이 효과가 있는지를 검증하며, 둘째는 연구 및 인력개발준비금의 신설이 연구개발비지출에 미치는 효과를 상장기업을 대상으로 검증 하였다. 연구결과는 첫 번째 방법에 의해서는 제도 변화가 이루어지는 기간 동안에 기업의 연구인력개발비에 영향을 미치는 잉여금 처분 기업의 변화가 있음을 볼 수 있었으며, 두 번째 방법에 의해서는 제도가 폐지된 기간과 신설된 기간에서 연구 및 인력개발준비금 손금산입이 영향을 주었다고 할 정도의 유의한 차이를 보이지 않았다. 그러나 중소기업의 경우에는 두 기간에서 유의한 차이를 보이고 있다. 본 연구의 공헌은 다음과 같다. 연구 및 인력개발준비금손금산입이 폐지되었다가 신설되고 다른 조세지원제도가 유지되는 기간의 효과를 분석함으로써 준비금손금산입의 효과를 좀 더 명확히 볼 수 있다. 또한 기업규모(중소기업)에 따라 분석함으로써 준비금손금산입 제도가 규모에 따라 연구개발지출 의사결정에 영향을 미치는가를 검증하였다. 본 연구의 한계는 첫째, 세법 조문에 따른 분석에서 기업이 실제로 지출한 연구인력개발비를 3년간 매년 일정하게 지출한다고 가정하고 파악하여 실제 지출된 연구인력개발비와 차이가 발생할 수 있다는 점이다. 그러나 연구인력개발비의 3년간의 전체 지출액은 동일하다. 둘째, 연구모형 분석에서 연구 및 인력개발준비금 손금산입 제도의 변경 시점을 변수로 측정하여 그 영향을 분석하였다. 따라서 다른 R&D 투자제도의 변화는 무시되었으며, 이로 인한 약간의 측정오차가 존재할 수 있다. This study examines the effect of allowing the appropriation of a reserve fund for R&D and human sources development as deductible expenses through the R&D Tax Incentive System on R&D investment by tracking firms listed in Korea Stock Exchange from 2007 to 2010 years. To do so, we carried out analyses as follows: - Analyzed the effectiveness of including a reserve fund for R&D and HR development in boosting in deductible expenses by using data of the firms that made R&D and HR development expenditure in accordance with tax provisions. - Analyzed how the inclusion of the reserve for R&D and HR development in deductible expenses affected the R&D expenditure of listed companies. The first analysis indicated that the firms showed changes in the appropriation of surplus that affects the R&D and HR development expenditure during the period of system change. In the second analysis, we compared the periods before and after the enforcement of the system, but no significant difference was found in general. However, for SMEs, the results showed significant difference proving the effectiveness of the changed system. This study contributes to clearly verifying the effect of the inclusion of a reserve fund for R&D and HR development in deductible expenses because the analysis is limited to the period, during which the system is reinstated while other tax incentive systems remain the same. In addition, the study shows how the inclusion affects companies` decision on R&D expenditure depending on the size of companies. Nevertheless, this study has a few limitations. In the first analysis based on tax provisions, we averaged out the total R&D and human development expenditure for three years based on the assumption that the yearly expenditure was consistent during the period. Thus, though the total R&D expenditure for the three years is the same as the actual, there can be some discrepancies between the analytical and actual yearly expenditure. In the model analysis, only the reserve for R&D and human development was taken as a variable and other incentives for R&D investment during the period were not taken into consideration, which might have caused some measurement error.

미래사회의 고객니즈 분석을 통한 시나리오 기반의 미래 기술예측 방법론

김영명(Young Myoung Kim),김민관(Min Kwan Kim),이준석(Jun suk Lee),한창희(Chang Hee Han) 한국경영과학회 2011 經營 科學 Vol.28 No.3

Recently, the level of uncertainty in R&D investment for an enterprise has increased due to technological development and industrial changes. Accordingly it is necessary for an enterprise to forecast the future or foresight the future technologies. But, the fact that the methodology used in predicting future technology is suitable for large project makes enterprise difficult to forecast the future technologies or trends. Thus, this study seeks for available methodology for future technology foresight from enterprise standpoint. The methodology proposed in this research is based on the scenario model, especially focused on the customer needs and future society change.

Microcavity Effect of Top-emission Organic Light-emitting Diodes Using Aluminum Cathode and Anode

Lee, Chang-Jun,Park, Young-Il,Kwon, Jang-Hyuk,Park, Jong-Wook Korean Chemical Society 2005 Bulletin of the Korean Chemical Society Vol.26 No.9

We report microcavity effect of top emission organic light-emitting diodes (OLEDs) by using Al cathode and anode, which are feasible for not only top emission EL and angle dependant effects but facile evaporation process without ion sputtering. The device in case of $Alq_3$ green emission showed largely shifted EL maximum wavelength as 650 nm maximum emission. It was also observed that detection angle causes different EL maximum wavelength and different CIE values in R, G, B color emission. As a result, the green device using $Alq_3$ emission showed 650 nm emission ($0^{\circ}$) to 576 nm emission ($90^{\circ}$) as detection angle changed. We believe that these phenomena can be also explained with microcavity effect which depends on the different length of light path caused by detection angle.

급성 췌장염으로 발현된 낭성 변화를 이릉킨 종격동 부갑상선 선종 1예

이준호,최영식,박진홍,허갑도,윤설영,최소진,권태헌,이창렬,손성표,박영효 대한내분비학회 1998 Endocrinology and metabolism Vol.13 No.3

Hypercalcemia due to hyperparathyroidism is rarely associated with acute pancreatitis. But, the relationship between hypercalcemia and pancreatitis still remains controvesial. Ectopic parathyroid adenoma with cystic change is one of the rare causes of hyperparathyroidism, and is usually located in neck and mediastinum. We report a case of mediastinal parathyroid adenoma with cystic change associated with acute pancreatitis. A 54-year-old male presented with epigastric pain for 3 days. The serum calcium, phosphate, elastase were 16.8mg/dL, 1.1 mg/dL, 2772.0 ng/mL respectively and his parathyroid hormone level in serum was 651.84 pg/mL. Chest CT showed a mediastinal mass with well defined inhomogenously enhanced density located between SVC and aorta. The patient was diagnosed to hyperparathyroidism with acute pancreatitis due to mediastinal parathyroid adenoma with cystic change, and was surgically removed. The surgical biopsy showed parathyroid adenoma with cystic change. After operation his general condition was improved and serum calcium, phosphate, amylase, lipase level were normalized (J Kor Soc Endocrinol 13:473-479, 1998).