한국인 성인 남자에게 구순열 및 구개열의 유병률에 관한 연구

백형선,김재훈,김동준 대한치과교정학회 2001 대한치과교정학회지 Vol.31 No.1

구순열 및 구개열은 두개 악안면 부위에서 가장 자주 발생되는 선천성 기형으로 적절한 의료진의 확보와 의료 정책의 수립을 위해서 정확한 환자 수를 파악하는 것이 필요하다. 그러나, 기존의 국내 발생률 추정 연구는 표본선정의 문제점과 이 질환이 갖는 높은 유산율과 사산을 및 다양한 형태로 인한 분류의 어려움과 한국 내에서의 특수성 중 하나인 장애아들의 해외 입양으로 인해 정확한 환자 수의 파악이 어려웠다. 따라서, 한국인에서의 체계적인 유병률 연구가 필요하리라 사료되며, 대부분의 구순열 및 구개열 환자에서 필요한 교정 치료의 수혜 정도를 파악할 필요성이 있다고 사료된다. 이에 본 연구에서는 한국 성인 남자에서 구순열 및 구개열 환자에 대한 유병률과 이들에 대한 교정 치료 수혜율을 조사하고자, 1998년도 병무청 징병 검사자 중 1979년도에 출생한 자만을 연구대상으로 하여 서울, 광주, 대구, 부산의 성인 남자 218,322명에 대해 3단계 검사를 실시한 후 다음과 같은 결과를 얻었다. 1. 1979년 생 한국 성인남자에서 구순열 및 구개열 환자의 유병률은 1000명당 0.65명이었다. 2. 전후방적 심도에 따라 1000명당 각각의 유병률은 구순열이 0.26명, 구순구개열이 0.36명, 구개열이 0.03명이었다. 구순열과 구순구개열은 비슷한 정도의 유병률을 보였으나, 구개열은 이에 비해 낮은 유병률을 보였다. 3. 횡적 심도에 따라 1000명당 각각의 유병률은 좌측 파열이 0.35명, 우측 파열이 0.16명, 양측 파열이 0.12명이었다. 좌측 파열은 우측 파열에 비해 매우 뚜렷하게 높은 유병률을 보였으며, 양측 파열은 편측 파열에 비해 낮게 나타났다. 4. 구순열 및 구개열 환자 중 성인남자에서의 한국 내 교정치료 수혜율은 35%였으며, 구순열, 구개열, 구순구개열의 순으로 28%, 29%, 67%였다. 구순열이나 구개열과 같이 단독 발생된 경우보다 파열의 심도가 심한 구순구개열의 경우에서 교정치료 수혜율이 높게 나타났다. Cleft lip and/or palate(CLP) is the most common congenital deformity in the craniofacial region. For a practical public health system for these patients it is necessary to have an understanding on the prevalence of CLP. However, it was difficult to estimate the exact number of CLP patients due to problems in sample selection, higher miscarriage and still birth rate, difficulty in classification, and adoptions to foreign countries. Therefore this study was to estimate the prevalence of CLP and the rate of orthodontic treatment, which is usually necessary in cleft lip and/or palate patients. The samples consisted of 218,322 Korean male adults from Seoul, Kwangju, Taegu and Pusan, all born in 1979. The screening method for recognizing the CLP patients was proceeded in steps and the results are as follows. 1. The prevalence of cleft lip and/or palate in Korean male adults born in 1979 was 0.65 out of the 1000 samples. 2. In the anteroposterior aspect of the 1000 samples, the prevalence of cleft lip, cleft lip and palate, and cleft palate was 0.26, 0.36 and 0.03 respectively. 3. In the transverse aspect of the 1000 samples, the prevalence of left, right and bilateral cleft was 0.35, 0.16, 0.12 respectively. The cleft in the left showed a much higher prevalence than in the right, while bilateral cleft showed a lower prevalence than unilateral cleft. 4. The orthodontic treatment rate of Korean male adults among cleft lip and/or palate patients was 35%, and it was in the order of cleft lip and palate, cleft lip, and cleft palate, being 67%, 29% and 29% respectively. The orthodontic treatment rate in patients with the more severe cleft lip and palate was higher than in patients solely haying cleft lip or cleft palate.

육우와 한우의 경제형질

백동훈 제주대학교 농과대학 제주도축산문제연구소 1987 畜産論叢 Vol.2 No.1

Economically important traits in beef and Korean native cattle are defined and several exotic beef breeds are evaluated for those traits. To choose breeds or crosses for beef production, we need to consider economic traits according to the production systems, feed resources available and market requirements. The economically important traits are growth rates, weights at weaning and slaughter, reproductive performances and carcass quality and they need to be standardized to measure. The breeds with high growth rate tend to be good in feed efficiency but poor in reproductive performances. Charolais is excellent in pre- and post-weaning growth and shows very high incidence of dystocia in both pure - and cross-breds. Angus produces top quality carcass. Brahman and Santa Gertrudis stand against harsh environment and resist external parasite like ticks and flies. Male calves of Holstein show faster growth but need to be assessed for the improvement in carcass quality infuture. For Korean native cattle. we need to improve growth rate, milk for nursing calf and quality and quantity of carcass.

韓牛 種牡牛의 體重에 對한 環境要因의 影響

宋柱葉,白東勳,崔淏盛 全北大學校 1996 論文集 Vol.42 No.-

This study was carried out to investigate overall performance and to estimate effects of the environmental factors on body weights of the bull in Korean Native Cattle. Data used for this study included a total of 545 heads of Korean Native Cattle recorded from 1981 to 1990 at Alpine Experiment Station located in Kangwon province. The effects of year of birth, age of dam, parity of dam and season of birth were estimated by means of least squares method. Overall least squares means and standard errors for the body weights of the bull at birth, 4, 6, 12 and 18 months of ate were 26.8±0.13, 99.3±0.58, 142.4±0.80, 338.0±1.34 and 484.2±2.00㎏, respectively. The effects of year of birth showed significant differences on birth weigh and highly significant differences on the other traits. The effects of age of dam showed significant differences on 4 months of age. The effects of season of birth showed significant differences on all of the traits. the calves born in winter or spring were heavier than those born in summer or fall.

Factors Affecting Production Efficiency in Beef Cattle Business (a review)

Baik, Dong Hoon 全北大學校 1981 論文集 Vol.23 No.-

專業 혹은 企業으로 하는 肉牛의 經營에 있어서 생산효율을 결정하는 要因에 관하여 많은 硏究가 이루어져 왔으나 대부분의 경우 특정한 期間內의 정체효율을 비교하고 설명하는데 불과하였다. 근래에는 電子計算機를 이용한 假想實驗値(simulated data)를 분석함으로써 總合的 생산효율(integrated production efficiency)을 설명하려는 시도가 활발히 진행되고 있는 실정이다. 그러나 電子計算機에 의한 假想實驗은 실제의 牛群 및 실제의 環境을 대표하는 완전한 모델을 설정하기가 어렵다는 점에서 이용상의 한계성을 지니고 있다. 생산효율은 全體의 經營組織에 대해서 평가되어야 하며, 飼料 및 勞動의 투입 및 生産物은 個體畜의 全生涯를 포함하는 효율을 설명하여야 한다. 繁殖에 有用하는 牝牛 및 牝牛의 體格에 對하여 많은 보고와 논란이 있어 왔다. 市場出何時에 가장 무거운 體重의 송아지를 생산하기 위하여 大型의 牝牛系統과 小型의 牝牛系統을 유지하는 것이 필요하다. 그러나 이때에 번식상의 장애를 최소한으로 줄이는 범위이어야 하며, 早熟系統의 牝牛를 이용하는 것 또한 극히 중요한 일의 하나이다. 肉牛에 있어서 牛乳의 生産量은 육생산효율을 증진시키기 위하여 강조되어야 하며, 이는 특히 牝牛에 의한 조악사료의 이용을 고려할 때 특히 중요하다. A number of research results on efficiency of beef production have been published, where many of them have described and dealt with the efficiency of weight gains during short periods of time. In recent years, attempts have been made to evaluate integrated efficiency of production in various terms by simulating data. Simulation results are of limited use because it is not possible to construct complete models representing real herds and real sets of environmental conditions. Production efficiency should be evaluated for the integrated system and the input and output should describe life cycle efficiency. Numerous reports have been published and discussed on the size of breeding female and male. There seemed to be little agreement among researchers, except that breed size should be exploited by selection of sire and dam lines with the greatest tolerable divergence in size to produce calves of heaviest market weight. Improving the milk production of the commercial beef herd is advantageous from the view point of production efficiency. This is especially stressed when considering the use of low quality forage by the cow.

Nonflammable and thermally stable gel polymer electrolytes based on crosslinked perfluoropolyether (PFPE) network for lithium battery applications

Baik, Ji-Hoon,Kim, Dong-Gyun,Lee, Jin Hong,Kim, Sangwan,Hong, Dong Gi,Lee, Jong-Chan THE KOREAN SOCIETY OF INDUSTRIAL AND ENGINEERING 2018 JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY -S Vol.64 No.-

<P><B>Abstract</B></P> <P>A gel polymer electrolyte (FGPE) based on a perfluoropolyether (PFPE) crosslinker and liquid state PFPE doped with lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) is prepared, and its characteristics including ionic conductivities, Li<SUP>+</SUP> transference numbers, and thermal/electrochemical stabilities are investigated. A commercial PFPE-dimethacrylate, Fluorolink MD700<SUP>®</SUP>, is found to be a suitable crosslinker for the FGPE preparation due to its good miscibility with the PFPE/LiTFSI electrolytes. The ionic conductivity and Li<SUP>+</SUP> transference number of the FGPE at 60°C are 1.72×10<SUP>−5</SUP> Scm<SUP>−1</SUP>, and 0.53, respectively. The FGPE is nonflammable, thermally stable up to 175°C without any weight loss, and has a wide electrochemical stability window (∼5.0V vs. Li/Li<SUP>+</SUP>). Therefore, the FGPE is expected to be a promising electrolyte candidate for safety-reinforced high-temperature lithium batteries.</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

지붕자동개폐식 축사 및 톱밥우상이 한우의 생산성 및 생력사양관리에 미치는 영향

백동훈(Dong Hoon Baik),최호성(Ho Sung Choi),송주엽(Joo Youb Song),최금홍(Keum Hong Choi),태광섭(Kwang Sub Tae) 전북대학교 농업과학기술연구소 1996 농업생명과학연구 Vol.27 No.-

N/A

Uranium (6) Adsorption and Transport in Crushed Granite

Dong Kwon Keum,Byung Jae Choi,Min Hoon Baik,Pil Soo Hahn 대한환경공학회 2002 Environmental Engineering Research Vol.7 No.2

Helicobacter pylori Infection and Peptic Ulcer Disease in Patients with Liver Cirrhosis

( Dong Joon Kim ),( Hak Yang Kim ),( Sung Jung Kim ),( Tae Ho Hahn ),( Myoung Kuk Jang ),( Gwang Ho Baik ),( Jin Bong Kim ),( Sang Hoon Park ),( Myung Seok Lee ),( Choong Kee Park ) 대한내과학회 2008 The Korean Journal of Internal Medicine Vol.23 No.1

Background/Aims: We investigated the prevalence and relationship of peptic ulcer disease and Helicobacter pylori infection to liver cirrhosis. Methods: We examined 288 patients with liver cirrhosis, 322 patients with non-ulcer dyspepsia, and 339 patients with peptic ulcer disease. Rapid urease test and Wright-Giemsa staining were used for diagnosis of H. pylori infection. Results: The prevalence of peptic ulcer disease in patients with cirrhosis was 24.3%. The prevalence of peptic ulcer disease in patients with cirrhosis divided into Child-Pugh classes A, B, and C was 22.3%, 21.0%, and 31.3%, respectively (p>0.05). The prevalence of H. pylori infection in the patients with cirrhosis, non-ulcer dyspepsia, and peptic ulcer without chronic liver disease were 35.1%, 62.4%, and 73.7%, respectively (p<0.001). The prevalence of H. pylori infection did not differ depending on whether there was peptic ulcer (35.6%) or not (34.9%) in patients with liver cirrhosis (p>0.05). The prevalence of H. pylori infection in patients with hepatitis virus-related liver cirrhosis and in the patients with alcohol-related liver cirrhosis was 42.5% and 22.0%, respectively (p<0.001). The prevalence of H. pylori infection in patients with Child-Pugh classes A, B, and C liver cirrhosis was 51.5%, 30.5%, and 20.0%, respectively (p<0.001). Conclusions: Factors other than H. pylori may be involved in the pathogenesis of peptic ulcer disease in the setting of liver cirrhosis.

Lewis Acid-Catalyzed Reactions of Anthrone: Preference for Cycloaddition Reaction over Conjugate Addition Depending on the Functionality of α,β-Unsaturated Carbonyl Compounds

Baik, Woon-Phil,Yoon, Cheol-Hoon,Koo, Sang-Ho,Kim, Ha-Kwon,Kim, Ji-Han,Kim, Jeong-Ryul,Hong, Soo-Dong Korean Chemical Society 2004 Bulletin of the Korean Chemical Society Vol.25 No.4

The Lewis acid-catalyzed reactions of anthrone with a variety of ethylenic substrates under various conditions have been studied. It has been observed that depending on kinds of ethylenic substrates and catalysts, products were varied. In particular, the $ZnCl_2$-catalyzed reaction of anthrone with ${\alpha},{\beta}$ -unsaturated ester gave bridged compounds 3 (Diels-Alder adduct type) and mono-Michael adduct 4 exclusively, while the base-catalyzed reaction gave 10,10-bis-Michael adduct as a major product independent of the amount of ethylenic substrate and base. Bridged compounds 3 were easily converted to the corresponding mono-Michael adduct 4 by a catalytic amount of base. Further Michael reaction of mono-Michael adducts with different ethylenic substrates in the presence of a catalytic amount of alkoxide gave unsymmetrical 10,10-bis Michael adducts in good or moderate yields.

Preliminary Study on Optimization of Disposal Facilities Against Human Intrusion

Dong-Keun Cho,Jung-Woo Kim,Jongtae Jeong,Min-Hoon Baik 한국방사성폐기물학회 2017 한국방사성폐기물학회 학술논문요약집 Vol.2017 No.05