대기 중 유해성분(NO₂, SO₂, HCHO)에 의해 열화된 종이의 물리적 특성

백소라(So Ra Beck),정소윤(So Yoon Jeong),정현석(Hyun Suk Jung),이진희(Jin Hee Lee),김형진(Hyoung Jin Kim),김신도(Shin Do Kim) 한국펄프·종이공학회 2014 한국펄프·종이공학회 학술발표논문집 Vol.2014 No.10

가스상 대기오염물질에 의한 종이 기록물의 가속열화 특성 연구

정소윤(So-Yoon Jeong),전수연(Soo-Yeon Jeon),백소라(So-Ra Baek),정현석(Hyun-Seok Jeong),이진희(Jin-Hee Lee),김형진(Hyoung-Jin Kim) 한국펄프·종이공학회 2015 펄프.종이기술 Vol.47 No.4

Paper records were generally degraded by some factors from atmospheric environments, like temperature, relative humidity or air pollutants. In this study, the degradation behavior of paper records by single or mixed gases of NO₂, SO₂, HCHO and TVOC was evaluated. The mechanical, optical and chemical properties of 4 kinds of paper (acid and neutral-based printing paper, traditional Hanji, and filter paper) were directly and indirectly affected by gaseous harmful materials. The brightness and L<SUP>*</SUP> value in all papers were slightly increased by accelerated aging under gaseous HCHO and TVOCs, but highly decreased by conditions under gases NO₂ and SO₂. The optical properties of paper records were most vulnerable in acid-based paper and high stable in filter paper and traditional Hanji by air pollutant degradation. The aging treatments under mixed gas pollutants including NO₂ resulted in decrease of physical, mechanical and optical properties of paper, so it was supposed that the concentration of NO₂ gas would be strictly controlled for optimum indoor air quality management in domestic storage centers for paper records.

압궤손상을 입은 혈관에서 Ginkgo Biloba 추출물(EGb 761)이 혈관문합술후 개통율에 미치는 영향

강소라,이동진,차진한,김양우 大韓成形外科學會 1999 Archives of Plastic Surgery Vol.26 No.3

Replantation after crush amputation has a relatively low success rate. Thrombus formation due to vessel and tissue trauma is considered as the principal cause of failure. In the laboratory and clinically, we have been tried to improve the post-anastomosis patency rate in crushed microvasculature. To accomplish this, we have usually used several anticoagulant drugs. Extracts from the leaves of Ginkgo biloba (EGb) have been used therapeutically for centuries. EGb exerts a number of pharmacologic actions. Eighty rats were control group and another 80 rats were treated with EGb 761. The femoral arteries underwent crush injury with an energy of 0.4J, and the vessles in each group were divided and anastomosed by a standard microsurgical technique. Each group was comprised as follows: ① control group(A1,A2): group A1(n=40); intraluminal saline irrigation, group A2(n=40); intraluminal saline irrigation+heparin 40 u/ml(IV) ② EGb 761 treated group(B1, B2): groupB1(n=40); intraluminal saline irrigation, group B2(n=40); intraluminal saline irrigation + heparin 40 u/ml(IV). At postoperative 14 days, the patency rates were; group A1 20%, group A2 77.5%, group B1 47.5%, group B2 92.5%. These results were interpreted as follows: the patency rate was significantly increased in the EGb 761-only treated group(p<0.01), the heparin-only treated group(p<0.01), and the EGb 761 and heparin-combined at crushed microvessel surgery. However the patency rate of the EGb-only treated group was significantly lower than that of the heparin-only treated group(p<0.01). And in the EGb 761 and heparin-combined treated group compared to the heparin-only treated group, there was some patency rate increase in the combined treated group, but there was no significant difference between them(p=0.060).

點郡 3㎖(H) 의 振動寫眞 및 Weissenberg寫眞에서의 特性

이진호,류보영,조소라,김문집,추금홍,서일환,임성수 순천향대학교 1993 논문집 Vol.16 No.3

Crtstallographic cell constants of point group ?? are a =b≠c, α=β=90。, and γ=120。. There are mirror plane symmetries in oscillation photography taken at a-axis and b-axis, but no plane symmetry at c-axis. Since Weissenberg zeroth layer taken at a- and b-axis obeys Friend's law, half of the photography shows non-symmetric unit of diffraction intensity. There are 6 mirror planes in the Weissenberg zeroth layer when the photography was taken at c-axis, therefore 1/12 of the unit cell is non-symmetric unit.

pH순환 모델에서 과포화 용액의 초기 우식 법랑질에 대한 재광화 효과

홍석진,김소라,이찬영,노병덕,금기연 대한치과보존학회 2001 Restorative Dentistry & Endodontics Vol.26 No.4

Dental caries is the most common oral disease. There are many factors contributing to its development. but complete understanding and prevention are not fully know. However, it is possible to remineralize the early enamel carious lesion by fluoride containing remineralization solution. Recently the pH-cycling model has been used to examine the effect of fluoride solution on remineralization of artificial caries in vitro as it can closely simulate the conditions encountered in vivo within a carefully controlled enviroment.

Weissenberg 寫眞 技法에 의한 酸化마그네슘(MgO)의 結晶構造

이진호,류보영,조소라,김문집,추금홍,서일환,임성수 순천향대학교 1993 논문집 Vol.16 No.3

The structure of MgO crystal is faced centered cubic(FCC) with cell parameters of a=b=c=4.21Å, α=β=γ=90。. The ionic bond length between Mg and O atoms is 2.1Å. This crystal belongs to m3m point group and to Fm3m space group.

Reciprocal Lattice Explorer의 原理와 使用法

徐日煥,李珍昊,秋錦洪,林星秀,柳保盈,朴晶蘭,金文執,趙素羅,金憲俊,李正秀,成百石 충남대학교 자연과학연구소 1993 忠南科學硏究誌 Vol.20 No.2

Reciprocal lattice explorer는 de Jong-Bouman camera와 Buerger precession camera를 合친것이다. 이 explorer를 使用하면 goniometer에 한번 固定한 試料를 使用하여 그 試料의 空間群을 決定하는데 必要한 모든 寫眞을 撮影할 수 있으며 그들은 찌그러지지 않은 逆格子面의 寫眞들이다. 本 論文에서는 de Jong-Bouman 과 Buerger precession 寫眞術의 原理와 使用法을 記述 하였고 또한 de Jong-Bouman의 振動寫眞과 zeroth layer 寫眞으로부터 11個 Laue群의 識別方法도 提示하였다. The reciprocal lattice explorer is an instrument which incorporates the principles of both the Buerger precession and the de Jong-Bouman methods. On the explorer all photographs which are necessary for a space group determination can be taken with a single setting of a crystal and the photographs show undistorted pictures of the reciprocal lattice planes. In this paper, the principles and the usages of the de Jong-Bouman and the Buerger precession photography are described, and a method of 11 Laue group identification using the de Jong-Bouman oscillation and zeroth layer photographs is shown.

취학전 어린이의 상악 유전치 우식증과 관련 요인

정승열,이광희,라지영,이동진,안소연,김지영,송지현,김윤희 大韓小兒齒科學會 2008 大韓小兒齒科學會誌 Vol.35 No.4

연구 목적은 상악 유전치 우식증의 발생 요인을 규명하기 위함이었다. 연구대상은 익산시 어린이집 중에서 무작위로 추출 한 7개 어린이집의 36개월 이상 71개월 미만의 남아 214명, 여아 187명, 모두 401명이었다. 연구방법은 상악 유전치 우식 증의 유병률을 조사하고, 성별, 연령, 모유 수유 또는 인공 수유, 수유 기간, 감미 간식 섭취 빈도, 칫솔질 시작 시기, 1일 칫솔질 횟수 등을 조사하여 상악 유전치 우식증과의 연관성을 분석하였다. 연구결과를 보면, 상악 유전치 우식증의 유병률은 남아에서 43.0%, 여아에서 26.7%로서 남아가 여아보다 유의하게 높았고(P<0.01), 수유 기간 2년 이하 군에서 31.0%. 2-3 년 군에서 43.2%, 3년 이상 군에서 63.2%로서 수유 기간이 길어질수록 유의하게 증가하는 경향을 나타내었으며(P<0.01), 감미 간식을 매일 섭취하는 군에서 44.2%,2-3일에 한 번 섭취하는 군에서 31.47%, 자주 섭취하지 않는 군에서 32.4%로서, 매일 섭취하는 경우에 상악 유전치 우식증과의 유의한 연관성이 있었다(P<0.05). 연령, 모유 수유 또는 인공 수유, 칫솔질 시작 시기, 1일 칫솔질 횟수에서는 상악 유전치 우식증과 유의한 연관성이 나타나지 않았다(P>0.05). The purpose of study was to investigate the etiologic factors of maxillary primary anterior caries. The subjects of study were 401 preschool children, 214 boys and 187 girls, from 36 to 71 months old of randomly selected seven nurseries in Iksan city. The prevalence of maxillary primary anterior teeth was cross-analyzed with gender, age, breast feeding or bottle feeding, length of feeding, sweet snack intake frequency, beginning of tooth-brushing, and toothbrushing frequency per day. The prevalence was 43.0% in boys and 26.7% in girls, and there was significant association between the prevalence and gender in cross analysis(P<0.01). The prevalences of the shorter than 2 years of feeding group, the from 2 to 3 years group, and the longer than 3 years group were 31.0%, 43.2%, and 63,2%, respectively, and there was significant association between the prevalence and the length of feeding (P<0.01). Daily intake of sweet snacks had a significant association with the prevalence(P<0.05) There was no significant association between the prevalence and the variables of age, breast feeding or bottle feeding, beginning of toothbrushing, and toothbrushing frequency per day(P>0.05).

진단 기준에 따른 취학전 어린이의 중증 유아기 우식증 유병률 비교

임경욱,이광희,라지영,이동진,안소연,김지영,송지현,김윤희 大韓小兒齒科學會 2008 大韓小兒齒科學會誌 Vol.35 No.4

연구목적은 중증 유아기 우식증에 대한 두 개의 정의를 진단 기준으로 하였을 때 각 기준에 따른 유병률이 일치하는 정도를알기 위함이었다. 연구대상은 익산시 어린이집 중에서 무작위로 추출한 7개 어린이집의 36개월 이상 71개월 이하 어린이401명 이었다. 치경과 탐침을 사용한 구강검사를 통하여 치아별 우식경험유치면 (dmfs)의 수를 조사하였으며 . 중증 유아기 우식증의 진단 기준은 (1) 상악 전치에 1개 이상의, 와동이 형성된 우식,상실(우식증에 의한), 충전 평활면이 있거나 (2) 우식,상실,충전 치면의 수가 3세는 4개 이상.4세는 5개 이상.5세는 6개 이상인 경우로 하였다. 상악 전치부 우식증에 의한 우식유병률과 우식경험유치면수(dmfs)에 의한 우식유병률은 3세에서 각각 26.7%. 28.9%, 4세에서 각각 32.4%, 30.4%, 5세에서 각각 39.4%, 41.3%, 전체에서 각각 35.4%, 35.9%으로서. 연령별로는 약간의 차이가 있었으나 전체에서는 차이가0.5%로서 거의 일치하였다. 따라서 중증 유아기 우식증의 진단은 두 가지 기준 중에서 어느 하나를 사용하더라도 비슷한 결과가 나을 것이라는 것을 확인할 수 있었다. The purpose of study was to compare the prevalences of severe early childhood cahes(S-ECC) using two different diagnostic criteria. The subjects of this study included 401 preschool children from 36 to 71 months of the randomly selected seven nurseries in Iksan city. Severe early childhood caries was defined as (1) 1 or more cavitated, missing (due to caries), or filled smooth surfaces in primary maxillary anterior teeth or (2) a decayed, missing, or filled score of ≥4 (age 3), ≥5 (age 4), or ≥6 (age 5) surfaces. The prevalence determined by maxillary anterior caries and the prevalence determined by dmfs were 26.7%, 28.9% in 3 years, 32.4%, 30.4% in 4years. 39.4%, 41.3% in 5 years, and 35.4%, 35.9% in all, respectively. The results suggest that the two diag-nostic criteria of the severe early childhood caries yield almost the same results.

Consideration of Discrepancy between Needle-Washout Thyroglobulin and Serum Thyroglobulin of Recurrent Papillary Thyroid Cancer

So Ra Kim,Mi-Kyung Kwak,Hye Ran Kang,Seug Yun Yoon,Seong Soon Kwon,Bo Young Kim,Hoo Nam Choi,Hye Jeong Kim,Jae Wook Kim,So-Young Jin,Hyeong Kyu Park,Dong Won Byun,Kyoil Suh,Myung-Hi Yoo 순천향대학교 순천향의학연구소 2014 Journal of Soonchunhyang Medical Science Vol.20 No.2

Although the prognosis of papillary thyroid cancer (PTC) is extremely good, locoregional recurrences after initial treatment occur. Thyroglobulin (Tg) is a reliable tumor marker to detect recurrence or persistence of PTC. However, occasionally serum Tg may miss the detection of a recurrence. We report a 54-year-old female presented with hoarseness due to cervical recurrence without concomitant elevation of serum Tg and anti-Tg antibody, in contrast to extremely increased needle-washout Tg, who had undergone a total thyroidectomy and radioiodine ablation as initial therapies for PTC. Several factors causing such discrepancy between needlewashout Tg and serum Tg can be suggested including site of recurrence, volume of tumor, interference by some kind of plasma antibodies other than anti-Tg antibody, and any conformational defect of Tg protein. Among them, the most convincing explanation is that any conformational defect of Tg may lead to impaired secretion of Tg to blood. We suggest that more studies are needed to find the cause for potential mechanisms involved in PTC recurrences without increased serum Tg.