동계 난방시 구조체 축열 공조시스템의 축·방열 특성에 관한 연구

임지훈,이시환,차영호,정광섭,이정재 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1

It is the plan that storage gets energy done by in structure with what thermal storage of structure changes only supply air duct among the existing HVAC system, and a basic principle coordinates the damper that it was installed makeup air in supply air duct like former HVAC system to an inside at supply and a night by day, and do makeup air supply with in ceiling space of thermal storage of structure HVAC system. This thermal storage of structure HVAC system uses the existing utility system, and energy saving can get structure of building done with energy storage, before air conditioning and peak load cut getting day heat load done.

Cone-beam CT로부터 제작된 측모 두부계측방사선사진의 정확도 평가

강지영,임성훈,김광원 대한치과교정학회 2007 대한치과교정학회지 Vol.37 No.6

최근 computed tomography (CT) 데이터로부터 실제 두부계측방사선사진 촬영기에서 촬영한 사진과 동일한 확대율을 갖는 두부계측방사선사진을 형성할 수 있는 기능을 갖춘 소프트웨어 (Accurex, CyberMed, Seoul, Korea)가 소개되었다. 이에 본 연구에서는 cone-beam CT (이하 CBCT) 데이터로부터 이 소프트웨어를 이용하여 제작된 측모두부계측방사선사진과 기존의 두부계측방사선사진촬영기로 촬영된 측모 두부계측방사선사진에서 각각 두부계측방사선사진 분석을 시행하여 그 차이를 비교함으로써 소프트웨어를 통해 CBCT로부터 제작된 측모 두부계측방사선사진의 활용 가능성을 평가하고자 하였다. 20명의 교정 환자를 대상으로 CBCT와 측모 두부계측방사선사진을 동시에 촬영하였다. CBCT로부터 제작된 측모 두부계측방사선사진과 기존 방식의 측모 두부계측방사선사진에서 두부계측방사선사진 분석을 시행한 후 두 사진의 계측치의 차이를 paired t-test로 검정하였다. 23개의 계측치들 중, 20개 항목에서는 통계학적으로 유의한 차이가 관찰되지 않았으나, U1-FH, Mx6 to PTV, Maxillomandibular difference의 항목에서는 유의한 차이가 나타났다. 이러한 차이는 CBCT로부터 형성된 측모 두부계측방사선사진의 해상도가 낮아 일부 해부학적 지표를 확인하기 어렵기 때문이며, 임상에서 CBCT로부터 제작된 측모 두부계측방사선사진을 porion, PTV, condylion과 같은 일부 해부학적 지표를 이용하지 않는 SNA, SNB, U1 to SN, IMPA, interincisal angle 등 흔히 사용되는 간단한 측모 두부계측방사선사진 계측에 활용 가능할 것이다. Objective: Three-dimensional approaches for the diagnosis and analysis of the dentofacial area are becoming more popular in accordance with the development of cone-beam CT (CBCT). The purposes of this study were to evaluate the reliability of cephalometric measurements of lateral cephalograms generated from a CBCT image by making comparisons with the traditional digital lateral cephalogram, and to evaluate the possibility of the clinical application of CBCT generated cephalogram images. Methods: Twenty patients whose external auditory meatus could be identified in the CBCT image were selected, and both CBCT and digital cephalograms were taken. Differences between the measurements of both cephalograms were tested by paired t-test. Results: Among the 22 measurements used, only U1-FH, Mx6 to PTV, and maxillomandibular difference showed statistically significant differences between the CBCT generated cephalogram and the digital cephalogram. Conclusions: The results suggest that the CBCT generated cephalogram can be used for some cephalometric measurements not requiring porion, PTV, condylion as a landmark (SNA, SNB, U1 to SN, IMPA, interincisal angle, etc.).

마찰시험기를 이용한 치과교정용 설측 브라켓과 호선의 마찰력 비교

박지훈,이용근,임범순,김철위 大韓齒科器材學會 2003 대한치과재료학회지 Vol.30 No.1

Frictional force tends to rapidly increase as the relative angle between the bracket slot and the archwire increases beyond critical contact angle. The purpose of this study was to measure the frictional forces between lingual orthodontic brackets and orthodontic archwires with a friction tester (FPR 2000, Rhesca, Japan). The influence of the presence of artificial saliva was determined additionally. Two different lingual brackets (FJT: Fujita, Japan; ORM: Ormco, USA) and one labial standard bracket (CTL:TOMY, Japan) as a control were used in this study. Archwires of three different alloys (SS: Stainless steel, Ormco, USA; TM: β-Titanium, Ormco, USA; EL: Cobalt-chrome, RMO, USA) with 0.016 x 0.022 inch and 0.017 x 0.025 inch were used in this study. Each bracket-archwire couple was tested with a friction tester in the dry and artificial saliva environments. Each measurement was conducted with a angular velocity of 0.1 rpm for 90 seconds under the normal force of 100gf at 25 ℃ for the dry and 34 ℃ for the artificial saliva environment. For SS and EL archwires, frictional force was greater with FJT bracket than with ORM bracket (p<0.01). Compared with SS and TM archwires, 0.016 x 0.022 inch EL archwire showed the greatest frictional forces with two lingual brackets (p<0.01). There were significant differences in frictional force between the dry and artificial saliva environment (p<0.05), however, the effects of artificial saliva were different depending on the bracket-archwire combinations. Experimental critical contact angles were greater than theoretically calculated values.

여수국가산업단지 인근 지역 대기오염물질 농도에 영향을 미치는 요인분석

김민영,변정훈,이영훈,이건영,한지은,이예림,임지현,장봉기 순천향대학교 기초과학연구소 2022 순천향자연과학연구 논문집 Vol.28 No.1,2

Eight monitoring stations in the Yeosu National Industrial Complex will determine the concentration of air pollutants measured every hour in 2019, analyze what factors affect them, and how they correlate with the air pollutant measurements. Six air pollutants (SO2, NO2, O3, CO, PM-10 and PM-2.5) measured at eight monitoring stations around Yeosu National Industrial Complex (Seogang-dong, Wolnae-dong, Munsu-dong, Yeocheon-dong, Deokchung-dong, Hwayang-myeon, Yulchon-myeon, Samil-dong) the measurement data for each hour of the year were downloaded to analyze the concentration by weather condition, time zone, season, separation distance from Yeosu Industrial Complex, and separation distance from Gwangyang Industrial Complex. SO2, NO2, and CO concentrations were significantly higher in winter, significantly lower in summer, and O3, PM-10, and PM-2.5 concentrations were significantly higher in spring. SO2, CO, PM-10, and PM-2.5 concentrations were significantly higher between 10 a.m. and 12 p.m., NO2 concentrations were significantly higher between 7 a.m. and 9 a.m., and O3 concentrations were significantly higher between 13 p.m. and 15 p.m.(p<0.001). The concentration of air pollutants (SO2, NO2, CO, PM-10, PM-2.5) excluding O3 was found to have a negative (-) correlation with weather condition, and in the case of O3, it was found to have a positive (+) correlation with PM-10, PM-2.5, temperature and wind speed. It was confirmed that the concentration of air pollutants emitted from the Yeosu National Industrial Complex differs depending on the season, time and distance to the industrial complex. This study aims to establish measures to minimize health damage to residents living relatively close to the industrial complex and contribute to the establishment of management and response measures according to the properties of substances to reduce the concentration of air pollutants in the future.

기대-불일치 패러다임에서 예상의 영향력에 관한 연구 : 브랜드 경험유무와 측정시점 시간간격의 조정적 역할

이학식,임지훈,구민정 한국방송광고공사 2005 광고연구 Vol.0 No.68

소비자 만족결정 과정을 설명하기 위하여 기대 - 불일치 패러다임이 개발된 이후 이 패러다임내의 연구단위들 간의 관계에 관해 많은 연구들이 수행되었다. 이러한 관계들 중에서 기대(본 연구에서는 예상)의 영향력은 여러 연구들에서 다르게 나타났다. 본 논문은 기대 - 불일치 패러다임 내에서 예상의 영향력이 브랜드 경험과 측정시점 시간간격에 따라 어떻게 달라지는지를 조사하기 위하여 수행된 두 연구결과를 보고한다. <연구 1>에서 특정 브랜드 유경험 소비자의 경우 예상은 지각된 성과에 정(正, +)의 영향을 미치지만 무경험 소비자의 경우 그 영향은 나타나지 않았다. 또한 유경험 소비자의 경우 예상은 지각된 성과와 예상일치성의 매개에 의해 만족에 영향을 미치지만 무경험 소비자의 경우 예상은 만족에 영향을 미치지 않는 것으로 나타났다. <연구 2>는 예상이 지각된 성과, 일치성, 그리고 만족에 미치는 영향이 예상 측정 시점과 지각된 성과, 일치성, 그리고 만족 측정 시점 간의 시간 간격에 따라 어떻게 달라지는지를 조사한 것이다. 이 연구에서 예상이 일치성에 미치는 영향력은 기대대로 시간간격이 긴 경우보다 짧은 경우에 더 크게 나타났다. 예상이 지각된 성과와 만족에 미치는 영향은 시간간격이 긴 경우보다 짧은 경우에 더 크게 나타났지만 그 차이는 통계적으로 유의적이지 않았다. After expectancy-disconfirmation paradigm was developed to explain the process of consumer satisfaction decision, a lot of studies were performed for the relationships of constructs in this paradigm. Among the relationships of those constructs, the influences of expectation(anticipation in this study) did not appear to be consistent in several studies. Two studies were conducted to investigates how brand experiences and measuring time interval moderate the influences of anticipation in the expectancy-disconfirmation paradigm. In the first study, (1) in the case of experienced consumers, anticipation appeared to positively influence perceived performance whereas in the case of unexperienced consumers, anticipation did not; and (2) in the case of experienced consumers, anticipation appeared to influence satisfaction with the mediation of perceived performance and congruency whereas in the case of unexperienced consumers, anticipation did not. The second study was regarding how the influences of anticipation on perceived performance, congruency, and satisfaction vary with the time interval between the time of measuring anticipation(t1) and the time of measuring perceived performance, congruency, and satisfaction(t2). In this study, as expected, anticipation appeared to influence congruency more in the case that the time interval was short than it was long. Although anticipation appeared to influence perceived performance and satisfaction more in the case that the time interval was short than it was long, the difference was not statistically significant.

기업 및 대회의 개성과 기업의 대회 스폰서십에 관한 연구

이학식,임지훈 한국방송광고공사 2004 광고연구 Vol.0 No.64

본 연구는 스포츠 마케팅 분야에서 스폰서십과 관련된 연구로서 브랜드개성을 도입하여 관련 변수들 간의 관계를 구조적으로 조사한 연구이다. 보다 구체적으로, 기업개성에 대한 태도, 대회개성에 대한 태도, 기업-대회 개성일치성, 기업에 대한 태도, 대회에 대한 태도, 그리고 기업의 대회후원에 대한 태도간의 관계를 조사하는 것이다. 이를 위하여 이러한 연구단위들로 구성되는 구조모형을 제안한다. 한 대학의 소비자행동 수업시간에 130명의 학생들을 대상으로 자료를 수집하였으며 유효설문 111부를 AMOS 4.0으로 분석하였다. 본 연구결과는 다음과 같이 요약된다. 첫째, 기업개성에 대한 태도와 대회개성에 대한 태도가 기업에 대한 태도와 대회에 대한 태도에 미치는 영향을 각각 조사한 결과 모두 正(+)의 영향을 미치는 것으로 나타났다. 둘째, 기업-대회 개성일치성이 기업의 대회후원에 대한 태도에 미치는 영향을 조사한 결과, 正(+)의 영향을 미치는 것으로 나타났다. 끝으로, 기업에 대한 태도→기업의 대회후원에 대한 태도 관계는 대회에 대한 태도에 의해 조정되는 것으로 나타났지만 대회에 대한 태도→기업의 대회후원에 대한 태도 관계에서 기업에 대한 태도는 조정적 역할을 하지 않는 것으로 나타났다. 본 연구의 결론에는 연구의 요약, 공헌점, 그리고 한계점을 논의하였으며, 끝으로 미래연구에 대한 제언을 하였다. This research introduces brand personality in the study of sport marketing and investigates the structural relationships of related constructs. More specifically, this study investigates the structural relations between attitude toward corporate personality, attitude toward event personality, corporation-event personality congruency, attitude toward corporation, attitude toward event, and attitude toward corporate event sponsorship. The authors propose a structural model comprising these constructs. Data were collected from students and analyzed with AMOS 4.0. The findings are summarized as follows. First, attitude toward corporate personality and attitude toward event personality appeared to positively influence attitude toward corporation and attitude toward event, respectively. Second, corporation-event personality congruency appeared to positively influence corporate event sponsorship. Finally, the relationship between attitude toward corporation and attitude toward corporate event sponsorship appeared to be moderated by attitude toward event but the relationship between attitude toward event and attitude toward corporate event sponsorship did not appeared to be moderated by attitude toward corporation. The conclusions discuss theoretical contributions and limitations and suggest several future research directions.

소아에서 Fogarty 카테터를 이용한 일측폐 환기 마취 경험

유수봉,강효석,임지훈,김두식,류시정 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.3

Thoracic surgery may be greatly facilitated by causing selective atelectasis of the lung being operated on (one-lung ventilation anesthesia). But the tube used for one-lung ventilation is greater outer diameter than conventional endotracheal tube when compare to each other with same inner diameter, so in some young children it is impossible to one-lung ventilation using double lumen tube or bronchial blocker tube because of narrow vocal cord. We performed one lung ventilation anesthesia using conventional endotracheal tube and Fogarty catheter as a bronchial blocker in 11-year old women who received lung biopsy surgery and left lower lobectomy.

RAW264.7 세포에서 interferon-r 및 LPS에 의해 유도되는 NO생성에 미치는 TALT-35의 영향

박종일,박경석,김종석,박지훈,윤은진,송경섭,서강식,김훈,윤완희,박승길,임규,황병두 충남대학교 생물공학연구소 2006 생물공학연구지 Vol.12 No.-

TALP-35 purified from human term placenta is known to increase microtubule polymerization and stabilize the polymerized microtubule. To examine the effect of TALP-35 on immune system this study was performed. MTT assay was performed to investigate the effect of TALP-35 on the proliferation of RAW264.7 cells. TALP-35 dose dependently suppress the proliferation of RAW264.7 cells at high concentration (above 1 μM) in unstimulated cells, in case of 10 μM TALP-35 treated cells the suppression was 25% but in stimulated cells it was only 15%. Cosedimentation assay was carried out to investigate whether TALP-35 can bind to tubulin of RAW264.7, monocyte/macrophage lineage of mouse, and polymerize it. TALP-35 polymerize the tubulin of RAW264.7 cells and sedimented in dose-dependent manner. To investigate the effect of TALP-35 on the expression of iNOS protein western blotting was performed. The expression level of iNOS was decreased dose dependently in high concentration of TALP-35 treatment. To examine the activity of iNOS, secreted NO was determined by method based on Griess reaction. Interferon-γ and LPS-stimulated production of NO from RAW264.7 cells was decreased dose dependently above 0.1 μM concentration of TALP-35 and 50% is decreased at 10μM of it. This study shows TALP-35 can control cytokine induced-iNOS expression therefore it might control inflammatory diseases.

서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1997)

김재홍,문득곤,김정수,김용준,임동진,박상훈,김희성,이민수,송기훈,김갑형,김형석,성소영,이인섭,김석우,황지환,조창근,김경문,부태성 대한화학요법학회 2000 대한화학요법학회지 Vol.18 No.3

Background : In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. Objective & Methods : For the detection of a more effective therapeutic regimen and assessing the prevalence of PPNG, we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results : In 1997. 99 strains of N. gonorrhoeae were isolated, among which 45(45.5%) were PPNG. Conclusion : The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 45.5% in 1997.

화농성 슬관절염이 동반된 수막구균성 수막염 1예

김태연,유진홍,박성환,김연식,임상현,신완식,강문원,정창훈,최문구,강지민 대한화학요법학회 1997 대한화학요법학회지 Vol.15 No.2

저자들은 최근 화농성 슬관절염과 병발한 수막구균성 수막염 1예를 체험하였고, 이는 국내에서 아직 보고되지 않은 드문 예로 사료되어 문헌고찰과 함께 보고하는 바이다. We recently experienced a case of meningococcal meningitis associated with pyogenic arthritis in a 37-year old male patient. Pyogenic arthritis developed in right knee joint during treatment for meningococcal meningitis. He was treated successfully by appropriate antibiotics and arthroscopic irrigation. To our knowledge, such a rare case has not ever been reported in Korea, Hence we report this case with a review of related literatures.