Resonance Frequency Analysis(RFA)를 이용한 임플란트 종류간의 초기 안정성 비교

오준호,장문택,Oh, Jun-Ho,Chang, Moon-Taek 대한치주과학회 2008 Journal of Periodontal & Implant Science Vol.38 No.3

Purpose: The objective of this study was to compare initial implant stability measured by RFA between different implant systems during the initial healing period. Material and Methods: Fifty-four patients (36 males/18 females) who had been treated at the Department of Periodontology, Chonbuk National University Dental Hospital during the period between January and November in 2007 were included in the study. The mean age of the subjects was 49 years old (18 to 77). A total of 104 implants (Type A: 3i $Osseotite^{(R)}$, Type B: $Replace^{(R)}$ select, Type C: ITI implant) were placed following the manufacturer's standard surgical protocols. Implant stability quotient (ISQ) readings were obtained for each implant at the time of surgery, 2-, and 4-month postoperatively. Result: No implant was failed during the observation period. At the baseline, the difference between mean ISQ values of 3 implant systems was statistically significant (p<0.05). However, at 2-, and 4-month following implant surgery, no significant difference was observed between ISQ values of the implant systems. In the same implant, the ISQ values of Type B and C implants increased (p<0.05), but those of Type A implants decreased during the 2-month healing period. The mean ISQ values of Type B and C implants showed a increasing tendency, while those of Type A implants were stable for the 4-month follow-up period. Conclusion: Within limits of this study, it can be concluded that implant design and surface topography of implant might influence the ISQ value and changing pattern during the initial healing period.

이산화탄소 지중저장 평가를 위한 실내실험 연구동향

오준호,김구영,김태희,김정찬,Oh, Jun-Ho,Kim, Kue-Young,Kim, Tae-Hee,Kim, Jeong-Chan 대한자원환경지질학회 2010 자원환경지질 Vol.43 No.3

북한 고려의학 학술 저널에 대한 저자 및 키워드 네트워크 분석

오준호,이은희,이주연,김동수,Oh, Junho,Yi, Eunhee,Lee, Juyeon,Kim, Dongsu 대한예방한의학회 2021 대한예방한의학회지 Vol.25 No.2

Objectives : This study seeks to grasp the current status of Koryo medical research in North Korea, by focusing on researchers and research topics. Methods : A network analysis of co-authors and keyword which were extracted from Koryo Medicine - a North Korean traditional medicine journal, was conducted. Results : The results of author network analysis was a sparse network due to the low correlation between authors. The domain-wide network density of co-authors was 0.001, with a diameter of 14, average distance between nodes 4.029, and average binding coefficient 0.029. The results of the keyword network analysis showed the keyword "traditional medicine" had the strongest correlation weight of 228. Other keywords with high correlation weight was common acupuncture (84) and intradermal acupuncture(80). Conclusions : Although the co-authors of the Koryo Medicine did not have a high correlation with each other, they were able to identify key researchers considered important for each major sub-network. In addition, the keywords of the Koryo Medicine journals had a very high linkage to herbal medicines.

16세기 조선 의서 "이석간경험방"에 나타난 전통지식 분석 : 죽과 밥을 이용한 식치 처방을 중심으로

오준호,Oh, Junho 대한예방한의학회 2013 대한예방한의학회지 Vol.17 No.1

Objectives : Medical treating with eating foods is one of important therapies in East Asian traditional medical knowledge and is referred as a therapy to treat diseases through foods. Since the food cannot be separated from ordinary people living, the medical treating with eating foods is a therapy with strong locality and contains many autogenous parts. Methods : Recently, the world is showing much interest for genetic resources, and the concept of intellectual property is rapidly expanding as the field of 'new knowledge property right' as well. Thus, the knowledge of medical treating with eating foods recently draws much attention in the economic aspect beyond the scholarly interest for traditional medicine. Here, I would like to summarize and report the contents related to medical treating with eating foods on "Yi, SeikKan experience prescriptions" which was discovered before. Results & Conclusions : First, medical treating with eating porridge on "Yi, SeikKan experience prescriptions" is classified into one with nonglutinous rice as the main ingredient and the other with other grains as the main ingredient. It is differently utilized depending on the nature of the grain. Second, medical treating with eating rice on "Yi, SeikKan experience prescriptions" was born from our nation's unique way of living and is classified into one way to eat rice mixed with ground medicinal herbs, another one to cook and eat rice with mixed grains and the other way to use as the external application. Medical treating with eating rice is assumed to replace the meal. Third, "food section" was given separately and discussed in this book. There were some parts different from existing medical knowledge due to the accumulation of experience using medicinal herbs. Fourth, we should pay attention to experience a book on medicine where vibrant medical information has been recorded in order to discover and process our traditional knowledge resources as a useful form.

18세기 한일 침구학의 교류 - 조선통신사 의학문답기록을 중심으로 -

오준호,차웅석,Oh, Jun-Ho,Cha, Wung-Seok 경락경혈학회 2006 대한침구의학회지 Vol.21 No.4

Objectives: The subject of this research is the catechism on medicine between the doctors of Joseon and Japan in the 18th century through Choson Delegation(朝鮮通信使 ). Methods: The author intended to review and analyze the contents of catechism related to Acupuncture and Moxibustion and determined the characteristics of Joseon and Japan ?s Acupuncture and Moxibustion. Results: At the time, Japanese doctors had a grasp on most theories of Acupuncture and Moxibustion and were very specialized clinically. They usually used filiform needles with various techniques, and already they had many different schools in practice. However, they wanted to know if their Acupuncture and Moxibustion skills were up to the international standard, especially to Joseon, whom they regarded as a country advanced in Acupuncture and Moxibustion. They wanted to com- pare and contrast their Acupuncture and Moxibustion with Joseon's. 18th century Joseon was high time for Acupuncture and Moxibustion. Various tools were used in surgery, and varieties of needles were used to stimulate acupuncture points. The development of tools evinces the precision of Joseon's Acupuncture and Moxibustion at the time. Also, comprehensive works such as DongUiBoGam(東醫寶鑑) and UiHaklpMun( 醫學入門) greatly influenced Acupuncture and Moxibustion. Because of this impact, it can be deduced that Acupuncture and Moxibustion emphasizing Jang(臟) and Bu(腑) organs and Internal Injury developed greatly. In addition, acupuncturist Holm(許任)'s fame continued from the 17th century into the 18th century, and his medical practice left a huge mark on not only Joseon but other eastern Asian countries as well. Conclusions: We found out the evidences that there were a lot of exchanges of acupuncture and moxibustion between Korea and Japan based of the Joseon TongShinSa (Emissary)'s record of catechism on medicine in the 18th century.

하상 인공구조물에 의해 유도되는 지하수-하천수 시스템의 상호작용

오준호,김태희,성현정,김용제,송무영,Oh, Jun-Ho,Kim, Tae-Hee,Sung, Hyun-Cheong,Kim, Yong-Je,Song, Moo-Young 한국지하수토양환경학회 2007 지하수토양환경 Vol.12 No.2

본 연구는 하상인공구조물에 의해 유도되는 지하수-하천수 시스템의 상호작용을 지하수 순환을 중심으로 연구하였다. 연구지역은 충청남도 금산군 남이면 건천리의 남이휴양림으로 연구의 목적을 달성하기 위해 수리물리적 방법(수위관측)과 수리화학적 특성(pH, EC, 주 이온분석)을 분석하였으며, 이들 자료간의 연관성을 파악하기 위해서 상호상관분석을 실시하였다. 수리물리적 방법에 의한 연구결과 하상 보 수평부의 BH-14의 수위변동은 다른 지하수관정과 비교 할 때 이중퇴행양상이 빈번하게 나타났으며, 그 폭도 크게 나타났다. 또한, 수리화학적 방법에 의해 얻은 결과를 자연추적자의 개념으로 사용해 보면 지하수인 BH-14가 하천에 유사한 성향을 나타내었다. 상관성분석결과에서 수리물리적 측면인 수위에 대한 상관성분석에서 BH-14와 하상 보에서 가장 높게 나타났으며, 반면 수리화학적 측면에 대한 상관성분석에서는 하상 보와 다리의 상관성이 가장 높게 나타났다. 이는 수위와 같은 물리적 상호작용은 용질거동 없이 압력의 전파에 의해 일어나는데 반하여 수리화학적 상호작용은 용질의 거동에 의해 반응이 일어나기 때문에 더 많은 시간이 걸리기 때문인 것으로 판단된다. 결과적으로 하상의 불투수성의 보에 의해 하천과 주변대수층의 경계조건이 바뀌고, 이때 지하수 시스템으로 유입되는 하천수에 의해 BH-14의 수위가 즉각적으로 상승하며, 수질에서 하천수적 성향을 나타내는 것으로 판단된다. 이러한 현상은 보의 수위가 높아질수록 더욱 증가하는 경향을 나타낸다. This study investigated the interaction between groundwater and stream water systems, which is caused by the artificial weir on streambed, enforcing external stresses on the groundwater system. The study area is in Nami Natural Recreation Woods located in Chungcheongnam-do Geumsan-gun Nami-myeon Geoncheon-ri. In this study both of hydrophysical methods (hydraulic head) and hyrdochemical investigations (pH, EC, major ion analysis) were applied. In order to identify the relationship between each of study results, cross-correlation analysis is performed. From results of hydrophysical methods, water level fluctuation at BH-14, installed by the weir, shows the double-recession pattern much more frequently and much higher amplitudes than the fluctuation at each of other monitoring wells. Using the results by hydrochemical investigations, hydrochemical properties at BH-14 is similar to the hydrochemical characteristics in stream water. To analyze the interrelationships between the results from each of applied methods, cross-correlation analysis was applied. Results from the correlation analyses, water levels at BH-14 and stream weir showed the highest cross-correlation in hydrophysical aspects. On the other hand, the correlation between stream weir and bridge was the highest in hydrochemical aspects. The difference between the results from each of methods is due that the hydrophysical response at BH-14, such as water level, is induced by the pressure propagation-not with mass transfer, but the hydrochemical interaction, caused by mass transport, takes much more times. In conclusion impermeable artificial weir on streambed changes the interfacial condition between the stream and surrounding aquifers. The induced water flux into the groundwater system during flood period make water level at BH-14 increase instantly and groundwater quality higly similar to the quality of stream water. Referred similarities in both of water level and water quality at BH-14 become much higher when water level at weir grow higher.

한의학지식정보자원 DB구축에 있어서 지식고고학적 가중치부여의 의의와 실제적용방안 연구

오준호(Junho Oh),안상우(Sangwoo Ahn),김남일(Namil Kim),차웅석(Wungseok Cha) 한국한의학연구원 2010 한국한의학연구원논문집 Vol.16 No.1

It is the well-known truth that processing of raw information is needed to a certain extent during information search. Especially for Oriental Medical information, it becomes much clearer that even more complex processing is necessary. As a means of reducing such complexity, this study suggests a way to understand effectively the organic relationships among information found on the interface. In this process, 'knowledge-based archaeological' method has been used. A new concept of interface observed by this research is the study of a system which contains realistically considered knowledge-based archaeological and historical specificity. These models are organized so that search results could be materialized in different tree-structured interface models, which can help one understand the relationships among wanted search results at one glance and confirm the details of those results via mouse click. Strength of the vertical tree structure resides in its capability of suggesting its users clear historical relationship between separate Oriental medical information. The horizontal tree structure enables deeper understanding of sectional interrelationship of searched information. The strength of the prescription tree structure is that it helps one understand the lineage of prescriptions, as Oriental medicinal treatment is often summarized into changes in prescriptions.

왕실기록과 의서 속에 나타난 유이태의 행적

오준호(Junho Oh),박상영(Sangyoung Park),안상우(Sangwoo Ahn) 한국한의학연구원 2011 한국한의학연구원논문집 Vol.17 No.1

Yu, Itae was a noted doctor who was active in the period of King Hyojong and King Sukjong. He wrote the medical books such as 〈Silheomdanbang〉,〈Inseogyeonmunrok〉, 〈Marjinpyeon〉, etc. and once participated in Royal medical council for curing the disease of King Sukjong. He is also famous for Yu itae tale which is wide spread in the area of Youngnam. This research is aimed at, on the basis of the precedent research, arranging his medical activities by tracing his deeds through the contents of historical records and his writings, based on which, clarifying several facts about compilatory process of 〈Silheomdanbang〉. Yu, Itae was versed in medicine and a paragon of filial piety. He left some records about measles when he was 41, and at that time his principle of medicine about measles was already established. On the basis of such an experience and academic idea, he finally came to write 〈Marjinpyeon〉. His broad knowledge of diseases beside measles was arranged in " Silheomdanbang"[ Inseo Travelogue] in 1709. Through this book, we can be aware that Yu Itae ranged over the experience-based medical procedures from other regions and also had an interest in even medical knowledge coming from abroad even though he inhabited Sancheong. His medical reputation spread not only to Seoul but also into the royal palace in his later days, thereby coming to get the royal command to participate in Royal medical council for curing King Sukjong of the disease. With the worsening of his health, Yu, Ie-tae passed away one year after returning home.

연료 분사 전략에 따른 수소 전기정화 엔진의 출력 및 배기 성능 연구

오준호(Junho Oh),김용래(Yongrae Kim),박철웅(Cheolwoong Park),최영(Young Choi),이정우(Jeongwoo Lee) 한국자동차공학회 2022 한국자동차공학회 지부 학술대회 논문집 Vol.2022 No.5

탄소 중립 운동의 가속화에 따라서 기존 화석연료에서 무탄소 연료 전환을 바탕으로 친환경 모빌리티를 개발하기 위한 연구가 활발해지고 있다. 이러한 관점에서 친환경 특성을 갖는 수소 연료가 모빌리티 산업의 차세대 핵심 연료로 각광받게 되었으며 최근 수소 연료전지 기술이 상용화 차량에 적용되어 출시됨에 따라 친환경 차량으로서 많은 주목을 받았다. 그러나, 연료 전지의 높은 제조 비용과 낮은 내구성이 문제점으로 거론되기 시작했다. 이에 미래 수소 경제 실현을 위한 가교 역할로서 수소 연료 내연기관으로 관심이 옮겨지고 있다. 수소 내연기관은 기존 내연기관에서 소량의 부품 변경만으로도 구현이 가능하므로 현재 사용되는 생산 기술 및 인프라를 유지할 수 있으므로 높은 신뢰도와 저렴한 가격으로 도입이 가능하다는 측면에서 연료 전지 대비 강력한 이점을 갖는다. 그러나, 수소 내연기관이 상용화 단계에 도달하기 위해서는 수소 연료의 낮은 인화점으로 인해 발생하는 역화 혹은 조기점화와 같은 비정상 연소와 기존 가솔린 엔진과 비교하여 낮은 출력 특성을 개선할 필요가 있다. 본 연구는 수소의 연소적인 측면에서 비정상 연소 개선 및 출력 특성 향상을 위해 연료 분사 전략에 따른 연소 및 배기 경향을 실험실 단위에서 분석하였다. 실험에는 2L 급 상용 전기점화 엔진이 사용되었으며 엔진 속도 1,500 RPM 에서 포트 분사 및 직접 분사 방식을 각각 비교 실험하여 엔진 단위에서 출력 향상을 위한 연료 분사 전략을 검토하였다. 포트 분사의 경우 연료 공급량 증가에 따라 최대 출력이 늘어났으나 수소가 흡기 공기의 체적을 대체하여 농후한 조건의 혼합기가 형성됨에 따라 비정상 연소 가능성이 증가하고 열전달 손실 증가로 인해 제동열효율이 저감되는 것을 확인했다. 직접 분사의 경우 연료 분사 시기를 350 BTDC CA에서 지각하여 실험을 진행했으며 분사시기가 지각될수록 흡입 공기량이 증가하여 희박한 혼합기가 형성되었다. 이에 따라 제동열효율이 증가하고 엔진 출력이 함께 증가하는 것을 확인했으며 희박 연소 조건에서 질소산화물 저감을 통한 배기 특성 개선이 확인되었다.

일반논문 : 해남의 유의 조택승(曺澤乘)ㆍ조병후(曺秉侯) 부자(父子) 연구

오준호 ( Jun Ho Oh ),박상영 ( Sang Young Park ) 전남대학교 호남학연구원 2012 호남학 Vol.0 No.52

본고는 19세기 해남 지역에서 儒醫로 활동했던 曺澤乘ㆍ曺秉侯 父子에 대한 본격적 연구의 예비 단계로, 그들의 행적에 관한 문헌 조사와 현장 답사를 바탕으로 이루어졌다. 본고는 이들의 행적을 정리하여 학계에 보고하여 이후 논의 생성의 단초를 마련하는 것을 목적으로 삼고자 한다. 조선 말기, 특히 19세기는 한의학의 역사에서 매우 역동적인 시기였다. 東武 李濟馬(1837~1900)는 四象醫學을 탄생시켰고, 石谷 李奎晙(1855~1923)은 扶陽學說을 통해 과거의 의학을 비판적으로 검토하고 새로운 방법을 제시하였다. 이들과 동시대에 살았지만 주목을 받지 못했던 인물로, 해남지방의 儒醫 曺澤乘이 있었다. 조택승ㆍ조병후 부자는 해남지방에서 오랫동안 영향력을 행사하였던 昌寧曺氏 正言公派의 후손들이다. 조택승은 졸헌이라는 호를 지어평생 인내와 겸손을 좌우명으로 삼아 왔으며 깊은 학식과 의술을 드러내지 않고 은거에 가까운 삶을 살았다. 그는 아버지의 영향으로 유학 지식을 토대로 시문을 지으며 살아 갔다. 말년에는 지역사회에 대한 지식인으로서 역할을 수행하고자 의학에 심취하여 의술을 배풀었다. 그의 醫名은 중앙에까지 알려져 말년에는 혜민원 주사에 제수되었다. 그의 시문은 그의 문집인 『졸헌집』에 남아 있으며, 그의 모습은 그의 식객이었던 것으로 보이는 최병육에 의해 그려져 지금까지 전해지고 있다. 그의 의학지식은 아들 조병후에게 이어져 『상한경험방요촬』이라는 책으로 엮어졌으며, 그 내용은 기존의 상한 치료와 구별되는 것들로서 19세기 조선 한의학의 역동적인 변화에 동참하고 있다. 조 병후 이외에 손봉구 역시 그의 의술을 이어 받은 것으로 보이며, 『상한경혐방요촬』 이외에 『拙軒要訣』이라는 의서를 지은 것으로 보인다. This study is the research on Joh, Taek-seung and Joh, Byeong-hu, who were father and son, and both were active as Confucian herb doctors. This study consists of on-site survey and documentary research, through which it aims at organizing and presenting their deeds. The late period of the Joseon Dynasty, especially the 19th century, is marked as the era of high dynamism in the history of Oriental medicine. This period witnessed Lee, Je-ma(1836~1900)creating Sasang Typology, and Lee, Kyu-jun(1855~1923)examining the past medicine in a critical way through Buyang theory and suggesting a new method. In the same period, there was a Confucian herbal doctor named Joh, Taek-seung who exercised considerable influence in Haenam district. Joh, Taek-seung was one of the descendants of Jeongeongong branch of the Johs of Changryeong family clan who had exercised their influence for a long time in Haenam district. Joh, Taek-seung had made patience and humility as his motto by naming himself “Jolheon” as a pen name all his life; in addition, he lived near to dwelling in retirement without exposing his profound learning and medical practice. Joh, Taek-seung lived writing poetry and prose on the basis of Confucian knowledge under the influence of his father. In his later years, he was infatuated with medicine and gave medical care to the public in an effort to carry out the role as an intellectual for a community. His reputation as a herbal doctor became known even to the central government, being appointed to a position “Jusa” at Haeminwon( a relief organization for the poor and sick). His poetry remains in his anthology 『Jolheon Collection』 and his appearance drawn by Choi, Byung-yuk, who is believed to be a house-guest, is still handed down to this day. His medical knowledge was succeeded by his son, Joh, Byeong-hu, to be compiled in a book titled 『Sanghangyeongheomyochal』, whose contents are distinct from the existing Sanghan medical treatment, showing that Joh, Taek-seung was taking part in the dynamic change of the 19 century Joseon Oriental medicine. Besides Joh, Byeong-hu, Sohn, Bong-gu was also believed to be handed Joh, Taek-seung`s medical practice, and he seemed to compile the medical book titled 『Jolheonyogyeol』.