과두과증식을 동반한 안면비대칭 환자에서 과두절제술의 적용과 효과

임경섭,차정열,황충주 대한치과교정학회 2008 대한치과교정학회지 Vol.38 No.6

과두과증식은 하악의 3차원적인 골격적인 비대가 일어나는 병적인 상태이다. 이러한 과두과증식의 원인은 호르몬의 작용, 외상, 감염, 유전, 태아기 때의 요인, hypervascularity 등의 요인으로 알려져 있다. 과두과증식의 진단 시 가장 중요한 것은 과두과증식 상태가 아직도 활성화 상태인지 판단하는 것이다. 이러한 과두과증식의 상태에 따라서 안면비대칭 환자의 치료는 이환측 과두의 성장 부위를 제거하는 과두절제술을 시행하는 방법, 성장이 완료될 때까지 기다렸다가 통상적인 악교정 수술만을 시행하거나 과두절제술을 병행하는 시술방법이 있다. 과두과증식의 활성화 상태를 판단하는 것은 치료 안정성에 매우 중요한 요인이며, bone scan이나 주기적인 3차원 컴퓨터 단층촬영이나 정모두부방사선사진 등을 통하여 확인할 수 있다. 본 보고에서는 과두과증식을 동반한 안면비대칭 환자를 과두절제술을 이용하여 개선한 증례를 소개하고자 한다. Condylar hyperplasia is a pathologic condition showing 3-dimensional skeletal hyperplasia of the mandible. The reason for condylar hyperplasia is not yet known, but the effects of hormone, trauma, infection, genetics, fetal condition, and hypervascularity are known as possible reasons. When we diagnose a patient as having condylar hyperplasia, it is important to decide if it is in progress or not. Treatment for facial asymmetry due to condylar hyperplasia are decided accordingly, including condylectomy, that is removal of growth site of the affected condyle, and conventional orthognathic surgery only or condylectomy with orthognathic surgery after the completion of growth. Therefore, it is important to determine the growth state of condylar hyperplasia in treatment stability. This is verified through bone scan and regular check-ups with 3D CT or PA cephalogram. This case report introduces an improved case of facial asymmetry with condylectomy together with orthognathic surgery.

Palobutrazol과 Chlorocholine Cholride 處理가 水稻 幼苗의 生理的 特性에 미치는 影響

류경렬,허훈,김인현 충북대학교 농업과학기술연구소 1995 農業科學硏究 Vol.12 No.2

This study was conducted to investigate the incidence of urolithiasis of Korean native cattle and beef cattle in abattoir and feedlot cattle. In addition, chemical composition of urinary calculi and field treatment of urolithiasis in feedlot cattle were also studied. The results obtained were as follows : A total of 365 heads(46.8%) of 780 cattle in abattoir were found to be urinary calculi, 55.9% of these in Korean native cattle and 44.3% in beef cattle, respectively. Seasonal incidences were relatively high in spring(57.9%) and winter(55.8%), while low in autumn(47.4%) and summer(28.0) Among 474 castrated growing cattle which feeding with pellet feeds, 318 heads(66.6%) were confirmed to urolithiasis by means of urine precipitation test. Morphological classifications of urinary calculi were appeared to 25-3% in irregular form, 24.0% in granular form, 20.7% in fine crystals, 18.0% in globular form and 12.0% in powdered form, respectively. Chemical compositions of urinary calculi were detected to relatively high levels of magnesium(17.565%) and silica(5.340%) due to feeding on Tong-il rice straw. In the field treatment of special formulated drugs to affected feedlot cattle, a total of 291 heads(91.5%) of 318 cattle were recovered as high as at the 4 weeks after treatment. The principal pathological changes were composed of hemorrhages, deceleration, degeneration and necrotic lesions on renal cortex and hemorrahages, chronic inflammatory lesions on renal pelvis and papillae, urethra and urinary bladder in the urinary system. Key words ; urolithiasis, urinary calculi, feedlot cattle.

세균성 점무늬병에 감염된 콩의 생리적인 변화

류경열,허훈 충북대학교 농업과학기술연구소 1994 農業科學硏究 Vol.11 No.2

Leaves of soybean (Paldal, Hwanggeum, Jangkyung and Manri) were sprayed with suspension of their homologus strain of Pseudomonas syringae pv. glycinea and the physiological changes were examined. The stomatal resistance increased in inocluated leaves. Preferred sites for survival and multiplication of the pathogens were the sheilds of leaf vein and the stomatal pits. Some pathogens entered the leaf tissue directly through the stomata and caused symptom after 2 days. The content of macroelements of soybean leaves were found slightly different between healthy and diseased. Magnesium content showed higher in healthy than in diseased leaves, however, potassium content was higher in diseased. There was no significant relations between macroelement content and stomatal resistance. As the time passed after inoculation, potassium content increased and then decreased, however, stomatal resistance increased constantly

세균성 점무늬병균에 感染된 콩잎 葉肉 組織의 形態學的인 變化

류경열,허훈,김용기 충북대학교 농업과학기술연구소 1995 農業科學硏究 Vol.12 No.2

A comparison was made of the in vitro activities of earlier quinolone antibacterials and some antibiotics used in aquaculture in Korea and newer quinolones, aganist selected flesh bacterial pathogens. Most quinolones were shown high sensitivity against all Gram- negative strains. Some Gram- negative strains, however, showed a resistance to the earlier quinolones and antibiotics. Bacteriostatic and bactricidal effects of the newer quinolones on Gram- negative strains were higher than those of the earlier quinolones. Among the newer quinolones, norfloxacin and pefloxacin showed a great reduction of the number and rate of mortality, and confirmed that their therapeutic effects were very excellent. Norfloxacin and pefloxacin were also recognized to be a wide spectrum of antibacterial quinolones, and their application was expected to be effective for the treatment of many fish bacteriaal diaseases, difficult to treat with existing antibiotics. The newer quinolones were considerd to have the potential for the treatment of Gram- negative, and possibly Gram- positive, bacterial fish pathogens.

Doppler ultrasound를 이용한 교정적 치아 이동 시 치수 혈류량의 변화의 측정 : 예비실험

임경섭,배영민,차정열,유형석,황충주 대한치과교정학회 2009 대한치과교정학회지 Vol.39 No.6

교정적 치아 이동 시 지속되는 압력에 의해 혈류변화가 발생하게 되며, 이러한 변화양상에 있어서 선학들의 연구 방법 및 그 결과의 다양성이 존재하였다. 본 연구에서는 Doppler ultrasound를 이용하여, 교정치료 전과 교정치료 시작 3주, 6주 후 치수 혈류량의 연속적인 변화를 알아보고자 하였다. 만 15세 이상 환자 18명을 연구대상으로 Doppler ultrasound를 이용하여 상, 하악 6전치 중 경도의 총생(2 mm 미만)을 보이는 치아(총생측정: required space-available space)와 인접치아를 포함한 3개의 치아를 대상으로 치수 혈류량의 변화를 알아보았다. 연구결과 부위별(상, 하악), 치아별, 기간에 따른 치수 혈류량의 변화는 교정 치료 시작 전과 시작 후 3주, 6주 혈류량에 유의한 차이가 없었다. 또한 치수 생활력 상실의 내재적 위험성을 비교하고자 교정 치료 시작 전 치아별로 치수혈류량을 비교하였을 때, 상악에서는 측절치, 하악에서는 견치에서 통계학적으로 유의한 차이는 나타나지 않았지만, 모든 항목에서 적은 값을 나타냈다 (p > 0.05). 본 연구의 결과는 이후에 진행될 Doppler ultrasound의 치아이동유형, 환자의 연령을 고려한 세부적인 실험 시 방법론적인 기초 자료로서 뿐만 아니라, 교정치료 시 치수 생활력의 상실에 대한 참고 자료가 될 수 있을 것이다. Objective: This study was to change of pulp blood flow among maxillary and mandibular anterior tooth with mild crowding and adjacent teeth using Ultrasound Doppler graphy. Methods: The change of pulp blood flow was measured three times using Ultrasound Doppler graphy; before the attachment of brackets, after 3 week, and after 6 week. The sample consists of 15 year old eighteen patients. Results: Before the attachment of brackets, after 3 weeks, and after 6 weeks, there were no significant differences in the change of pulp blood flow in each part (maxilla and mandible) and each tooth according to period. In addition, to compare internal dangerousness of loss of the pulp vitality, when pulp blood flow is compared in each tooth before orthodontic treatment, there were no statistically significant differences in maxillary lateral incisor and mandibular canine but it showed low values in all measurement items (p > 0.05). Conclusions: Results of this study can be not only methodological preliminary data in further study such as tooth movement type of Ultrasound Doppler graphy and particular study considered the patient age, but also reference materials for the loss of pulp vitality in orthodontic treatment.

運動 後 恢復期에 따른 血液成分 變化

이철환,이경렬 진주여자전문대학 2002 論文集 Vol.25 No.-

This study is based on a 50cm Harvard Step Test of five male college students to find out the change of the blood contents in the period of convalescence after the maximum intensity exercise reaching 170 beats / minute of heart rate. We got these results after three experiments. 1. In the Period of Convalescence after the maximum intensity exercise, a white blood cell count was higher than that of normal period, and after 30 minutes of relaxing time it went back to normal range. 2. In the Period of Convalescence after the maximum intensity exercise, a red blood cell count was higher than that of normal period, and after 30 minutes of relaxing time it went back to the normal range. 3. In the Period of Convalescence after the maximum intensity exercise, a hemoglobin count was higher than that of normal period, and after 30 minutes of relaxing time it went back to the normal range. 4. In the Period of Convalescence after the maximum intensity exercise, a hematocrit count was higher than that of normal period, and after 30 minutes of relaxing time it went back to the normal range. 5. In the Period of Convalescence after the maximum intensity exercise, a platelet count was higher than that of normal period, and after 30 minutes of relaxing time it went back to the normal range. 6. In the Period of Convalescence after the maximum intensity exercise, a glucose level in the blood decreased slightly. But after 10 minutes of relaxing time, it went up to slightly higher level than that of a normal period. Even after 30 minutes of relaxing time, it did not fully recover to the normal period level.

연소에 의한 엔진 진동 특성에 관한 연구

장석영,박경석,오택열,백영남 慶熙大學校 1993 論文集 Vol.22 No.-

Generally, a knock sensor for a high power engine detects cylinder wall vibration and estimates pressure vibration in the combustion chamber. In this study, so combustion pressure detected by pressure tranducer and cylinder wall vibration detected by an accelation sensor are estimated and the difference of those two signals are anlayzed. These two signals are analysed by frequency analysis method and compared with theorical knocking mode in the combustion chamber of the spark ignition engine. Design parameters of the knock sensor are determined by these analysed data.

養液裁培에 의한 상추의 物質生産 및 光合成에 特性에 關한 硏究

許煇,柳慶烈,崔基準 충북대학교 농업과학기술연구소 1993 農業科學硏究 Vol.10 No.2

These experiments were carried out for three terms (1st : 5/23-6/28, 2nd : 8/14-9/l9, 3rd : 9/20-l1/11) to investigate the rate of Dry Matter Production and Photosynthesis of hydroponically cultivated lettuce. The results were obtained as follows : 1.The number of Lettuce leaf in each culturing term was higher in the third term than in others and the emergence rate of the 1st term was the factest one. 2.Among the terms, the photosynthetic activity was in its highest in the 1st term. Progressing curve of photosynthesis during the day showed similar patterns but the highest rate of photosynthesis occurred at noon in the first term, 1 P.M. in the second term, and 11 A. M. in the third term. 3.Fresh weight of the 3rd term increased to 158% compared to that of the 1st term. However, that of the 2nd term decreased to 54% and the rate of dry weight and of specific leaf area decreased, too.

KCCH cyclotron neutron 및 60Co r-ray에 의한 인체 말초혈액 임파구의 염색체 이상측정

김성호,김태환,정인용,조철구,고경환,류성렬 대한방사선 방어학회 1992 방사선방어학회지 Vol.17 No.1

KCCH cyclotron neutron(30cCy/min) 및 ??Co γ-ray(210cGy/min)를 시험관내의 정상 인체 말초혈액임파구에 조사하여 염색체이상(dicentric 및 centric ring)을 관찰하고 이의 선량-반응관계식을 linear model(Y=K₁D+a), power-law model(Y=K₂Dⁿ), quadratic model(Y=K₃D²) 및 linear-quadratic model(Y=αD+βD²)을 사용하여 구하고 이들 model중 염색체이상의 측정치와 가장 일치하는 관계식을 근거로 하여 γ -ray에 대한 neutron의 relative biological effectiveness(RBE)를 산출하였다. 염색체 이상(dicentric plus centric ring)의 발생분포는 γ-ray의 경우 linear model(P=0.067)을 제외한 power-law model[Y=(5.81±1.96)×10??, P=0.931], quadratic model [Y=(3.91±0.09)×10?D², P=0.972] 및 linear-quadratic model [Y=(6.55±6.83)×10?D+(3.72±0.22)×10?D², P=0.922]에 적합하였다. Neutron의 경우 linear model [Y=(6.12±0.17)×10?³ D-022, P=0.987]에 가장 일치하였고 quadratic model (P<0.005)을 제외한 power-law model[Y=(2.43±0.70)×10?³D+(1.21±0.39)×10?D², P=0.415]에 비교적 적합하였다. 세포당 0.1-1.5개의 염색체이상을 나타내는 neutron의 γ-ray에 대한 RBE는 2.714±0.408이었다. The frequencies of KCCH cyclotron neutron(30cCy/min) or ??Co γ-ray(210cGy/min)-induced asymmetrical interchanges(dicentrics and centric ring) and acentric fragment(deletion) at several doses were measured in the normal human peripheral blood lymphocytes. Chromosome aberrations were scored at the first nitosis after stimulation with phytohemagglutinin. The neutron and γ-ray data were analysed on liner, power-law, quadratic and linear-quadratic model. When the dicentrics and centric rings of γ-ray datas were pooled and fitted to these model, good fits were obtained to power-law [Y=(5.81±1.96)×10??, P=0.931], quadratic [Y=(3.91±0.09)×10?D², P=0.972] 및 linear-quadratic model [Y=(6.55±6.83)×10?D+(3.72±0.22)×10?D², P=0.922] except for linear model(P=0.067). As in the case of neutron data, the best fits was obtained to the linear model [Y=(6.12±0.17)×10?³ D-022, P=0.987] and good fits were obtained to power-law[Y=(5.36±3.02)×10?⁴D??, P=0.601] and linear-quadratic model [Y=(2.43±0.70)×10?³D+(1.21±0.39)×10?D², P=0.415], except for quadratic model (P<0.005). The relative biological effectiveness(RBE) of neutron compared with γ-ray was estimated by best fitting model. In the asymmetrical interchanges range between 0.1 and 1.5 per cell, the REE was found to be 2.714±0.408.

Visual Phenotyping Analysis of Korean Wild Mouse KWM/Hym

Kyoung Yul Seo 한국실험동물학회 2023 한국실험동물학회 학술발표대회 논문집 Vol.2023 No.2