Pulsed Nd: YAG 레이저 照射時 乳前齒의 칼슘 容出量과 電子顯微鏡的 硏究

주훈,김수야,백병주 全北大學校 齒醫學硏究所 1990 전북치대논문집 Vol.8 No.1

The purpose of thus study was to determine the optimum drange of laser energy density to the tooth surface of sound deciduous incisors when they are irradiated by pulsed Nd : YAG laser. Laser impacts were made at energy density of 30, 40, 50 J/㎠ on the enamel & dentin surface. The auther had investigated the tooth surface with a Scanning Electron Microscope, examined the amount of calcium released from the enamel & dentin surface into 37% phosphoric acid with ICP-AES(Inductively Coupled Plasma-Atomic Emmision Spectroscopy). The obtained results were as follows : 1. It was seen obstruction of dentinal tubules after decalcified dentin surface of deciduous incisor irradiated with energy density 40 J/㎠. 2. It was seen fused etching surface after decalcified enamel surface of deciduous incisor incsor irradiated with energy density 40 J/㎠. 3. The amount of released Ca. was the smallest at 40 J/㎠. The amount of released Ca. between experimental group and control group was significant and the rate was enamel : 0.43, dentin : 0.53, when substance was decalcified for one minute (P<0.01).

RORA 유전자 다형성과 한국인 젊은 성인에서 일중선호도와의 연관성

주훈,조철현,문정호,김린,이헌정,Ju, Hoon,Cho, Chul-Hyun,Moon, Joung Ho,Kim, Leen,Lee, Heon-Jeong 대한수면의학회 2016 수면·정신생리 Vol.23 No.1

목 적 : Retinoid-related orphan receptor A (RORA) 유전자가 일주기리듬의 조절에 영향을 미친다는 사실이 알려져 왔다. 본 연구에서는 RORA 유전자다형성과 일중선호도의 연관성을 한국인 젊은 성인을 대상으로 분석하였다. 방 법 : 광고를 통해 모집한 504명의 젊은 성인이 최종적으로 대상에 포함되었다. 모든 대상은 13문항 composite scale for morningness (CSM)를 작성하였다. RORA rs11071547 단일염기다형성은 PCR 기반한 실험 방법을 통하여 분석하였다. 결 과 : CSM 점수결과 일중선호도는 RORA rs11071547 SNP의 유전자형과 대립유전자 보유여부에 따라 차이를 보이지 않았다. 결 론 : 이러한 연구결과는 RORA rs11071547 SNP가 일중선호도에 중요한 역할을 하지 않을 가능성을 보여준다. Objectives: The retinoid-related orphan receptor A (RORA) gene has been reported to have an impact on circadian rhythm regulation. In this study, we analyzed the relationship between the RORA gene polymorphism and diurnal preference in Korean young adults. Methods: A population of 504 young adults was included in the study. All subjects were given and completed a 13-item composite scale for morningness (CSM). The RORA gene rs11071547 single-nucleotide polymorphism (SNP) was genotyped by PCR-based methods. Results: CSM score was not associated with genotype or allele carrier status of the RORA rs11071547 SNP. Conclusion: This result indicates that the RORA rs11071547 SNP does not play a role in diurnal preference.

스스로 변형이 가능한 유연 전자기기 및 소프트 로보틱스를 위한 자가 굽힘 필름

주훈표,이종호 대한기계학회 2018 대한기계학회 춘추학술대회 Vol.2018 No.5

불소 및 레이저가 우치법랑질의 인공우식병소에 미치는 영향

백병주,윤현두,김재곤,주훈 大韓小兒齒科學會 1997 大韓小兒齒科學會誌 Vol.24 No.3

The purpose of this study was to examine the morphological characteristics and combined effects of fluoride application and laser irradiation on artificial caries-like lesion formation in bovine enamel. Enamel specimens were divided into five experiment group and placed in no-treatment(group C), APF application alone(group F), laser irradiation alone(group L), APF application before laser irradiation (group FL), and APF application after laser irradiation (group LF) on artificial caries-like lesion. Sound enamel was used as a control group. The ultrastructural changes and physical effects of the fluorided and lased enamel has been investigated by using SEM, enamel solubility and microhardness test as well as distributions of calcium, phosphorus and fluoride in internal enamel by using EPMA. The following results were obtained. 1. In the all experiment groups, the amounts of dissolved calcium of enamel surfaces signigicantly decreased according to increasing exposure time of acid solution than control group(P<0.001), Group L showed higher than that group FL and LF in 30 and 60 min(P<0.05). 2. The microhardness values of enamel surface in the control group was highest than that in the other experiment groups. Group F, L, FL and LF were significantly increased than group C(P<0.001). 3. The enamel surface treated with APF produced deposites of numerous small globules and lased enamel showed a cracker-like appearance with microcrack and small pore. Numerous deposits were infiltrated in the fissrued portion of enamel treated with APF after laser irradiation. 4. In the case of APF application alone, the elevation of the fluoride profile can be seen within 5㎛ of the outermost layer and a similar profile observed in the specimen treated with APF before laser irradiation. However, the specimen treated with APF after laser Irradiation showed a large elevation within 10㎛ of the outermost layer of the enamel. 5. The higher Ca/P ratios were observed in 10㎛ depth of lased and fluorided enamel when compared to the sound and carious enamel. The fluoride content decreased rapidly with distance from enamel surface, in the group F, fluoride concentration was significantly higher than that in the group C, L, FL, LF and control group according to increasing enamel depth(P<0.05).

淸儒'六經皆史'說 辨析

주훈초 成均館大學校 大東文化硏究院 1995 東洋學國際學術會議論文集 Vol.5 No.-

간호사의 일터학습이 학습전이를 매개로 과업-맥락성과에 미치는 영향과 근거기반실무역량의 조절효과

주훈철(Hooncheol Ju),홍아정(Ah Jeong Hong) 숭실대학교 영재교육연구소 2024 Global Creative Leader Vol.14 No.1

본 연구는 간호사 직무교육이 고도화됨에 따라 일터학습이 학습전이를 거쳐 성과로 이어지는 과정에서, 간호조직이 중요하게 여기는 근거기반실무역량이 미치는 영향을 실증하고자 했다. 상급종합병원 간호사 342명을 대상으로 수집된 자료는 구조방정식 모형에 근거하여 SPSS 26.0과 PROCESS macro tool(모델 14), AMOS 26.0을 활용하여 분석했다. 일터학습 중 무형식학습이 과업성과와 맥락성과 모두다. 학습전이는 일터학습과 성과에서 부분매개효과를 보였다. 다만, 근거기반실무역량은 학습전이와 과업성과 사이에서만 강화 효과가 있었고 맥락성과에서는 존재하지 않았다. 일터학습과 과업성과의 관계에서 학습전이의 매개효과와 근거기반실무역량의 조절효과는 유의했다. 연구결과는 임상 실무 교육과정에서 학습전이와 근거기반실무역량의 향상이 개인과 조직성과에 긍정적으로 작용할 것을 의미하며, 임상 실무에서 근무하는 간호사의 성과향상을 위해 학습전이의 메커니즘을 고려하고 근거기반실무역량 향상을 위한 인적자원개발 전략이 필요성을 강조하는 점에서 의의가 있다. This research aimed to empirically examine the relationship between the workplace learning of nurses and its impact on performance, focusing on the mediating role of learning transfer and evidence-based practice competency as nurse job training becomes more advanced. Data collected from 342 nurses working in a tertiary general hospital were analyzed using structural equation modeling with SPSS 26.0 with PROCESS macro tool(model 14) and AMOS 26.0. Informal workplace learning during the job showed significant results for both task performance and contextual performance. Static correlations between workplace learning and learning transfer were also confirmed. Learning transfer partially mediated the relationship between workplace learning and performance. However, evidence-based practice competency only had a strengthening effect on learning transfer and task performance, not in contextual performance. The mediation effects of learning transfer and the moderation effects of evidence-based practice competency in the relationship between workplace learning and task performance were significant. The research results imply that enhancing learning transfer and evidence-based practice competency in clinical practice learning programs can positively impact the individual and organizational performance of nurses. This underscores the importance of considering the mechanisms of learning transfer and the need for human resource development strategies to enhance evidence-based practice competency for the performance improvement of nurses working in clinical practice.

형상기억합금을 활용한 구동 가능한 유연성 필름

주훈표(Hunpyo Ju),김남윤(Namyun Kim),이종호(Jongho Lee) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.4

해외Plant공사의 안전관리 -늘어나는 재해, 작업조건 개선이 시급-

주훈문 대한전기협회 1983 대한전기협회지 Vol.- No.84

법랑질 형성 부전증에 대한 증례 보고

백병주,이재영,주훈 大韓小兒齒科學會 1989 大韓小兒齒科學會誌 Vol.16 No.2

Amelogenensis imperfecta that affects the enamel of both the primary and permanent dentition is generally accepted as a hereditary defect. The anomaly occurs in the general population in the range of 1 in 14,000 to 1 in 16,000 and has a wide range of clinical appearance. At least three different clinical variation of amelogenesis imperfecta are observed : the hypocalcified type, the hypomaturation type, and the hypoplastic type. 8 years old male is refered to the Dept of Pedodontics, Collage of Dentistry, Chonbuk National University due to crown discoloration of maxillary central incisors. The treatment depends on its severity and the demands of esthetic improvement. In this case, full covering composite resin restorations make for the management of the esthetic problem, and s.s.crown made for the posterior teeth.

淸儒六經皆史'說辨析

주훈초 成均館大學校 大東文化硏究院 1995 東洋學國際學術會議論文集 Vol.5 No.-