Introduction and application of a composite insect trap for the National Ecosystem Survey of Korea

Han Yong‐Gu,Hong Eui jeong,Kim Do‐Sung,Kim Chulgoo,Cha Jin Yeol 한국곤충학회 2020 Entomological Research Vol.50 No.10

This study aimed to establish the best applicable method for the National Ecosystem Survey (NES) guidelines by (i) verifying the efficiency of an insect trap that combined the Malaise trap, flight intercept trap, and pitfall trap (MFP trap) as part of the improvement for the terrestrial insect field in the fifth NES, and (ii) comparing the result with the currently used Malaise trap and pitfall trap (MP traps). We found that the efficiency of attaining species diversity was much higher with the added flight intercept trap function than the current Malaise trap alone for flying insect collection. For collecting ground insects, the efficiency of attaining species diversity of the pitfall trap from the MFP trap was lower than that from the MP trap. Besides, the Malaise trap of the MP trap showed superior efficiency than that of the MFP trap in species diversity. The results suggested that modification, supplementation, and re‐testing should be performed by analyzing various factors such as the trap material, barrier size, capturing container inlet, and mesh size, with consideration of the design of the current Malaise trap. Therefore, in survey‐based research, which aims at identifying insects species diversity and inhabiting status—such as the NES, it is necessary to introduce the MFP trap with the flight intercept trap function added to the Malaise trap function, and for the pitfall trap function of the MFP trap, it can be operated as a separate trap from the MFP trap.

침전법에 의한 CaCO₃:Sn^(2+) 형광체의 합성

한상목,신대용,윤봉구 강원대학교 부설 석재복합신소재 제품연구센터 2004 석재연 논문집 Vol.9 No.-

침전법을 이용하여 CaCO₃를 합성한 후, 활성제로서 Sn^(2+)를 도핑하여 CaCO₃:Sn^(2+) 형광체를 합성하고 결정상과 형상 및 Sn^(2+) 첨가량에 따른 형광특성을 조사하였다. CaCl₂·2H₂O-(NH₄)₂CO₃수용액에 NH₄OH를 첨가하여 pH가 증가하면 입자의 응집이 관찰되지 않고 vaterite상이 장시간 안정하게 존재하였으며 pH 11에서는 1~3㎛의 순수한 구형 vaterite상이 얻어졌다. Vaterite인 구형 CaCO₃:Sn^(2+) 형광체와 열처리한 구형의 calcite형 CaCO₃:Sn^(2+) 형광체는 230 nm에서 최대로 여기되어 465 nm에서 최대 발광강도를 나타내었다. 합성된 CaCO₃:Sn^(2+) 형광체는 결정상과 관계없이 SnCl₂·2H₂O의 첨가량이 2 mol%일 때 가장 강한 발광강도를 나타내었으며, 능면체의 calcite형 CaCO₃:Sn^(2+)형광체는 열처리하여 안정화된 구형의 calcite CaCO₃:Sn^(2+) 형광체와 구형의 vaterite형 CaCO₃:Sn^(2+) 형광체에 비해 높은 발광강도를 나타내었다. Vaterite type of CaCO₃ was synthesized by using the precipitation method(CaCl₂-(NH₄)₂CO₃ system) with addition of NH₄OH at different temperature, time, pH and concentration. As a result, pure vaterite having spherical shape(0.1~10 ㎛ in size) was formed at the condition of high pH(>11) and high concentration(>5 M). CaCO₃:Sn^(2+) phosphors(spherical vaterite) were synthesized at CaCl₂-SnCl₂-(NH₄)₂CO₃-NH₄OH system. CaCO₃:Sn^(2+) phosphors(spherical vaterite) were transformed to CaCO₃:Sn^(2+) phosphors(spherical calcite) by heating at 550℃ for 10 min. The Particle sizes of CaCO₃:Sn^(2+) phosphors(rhombohedral calcite) and CaCO₃:Sn^(2+) phosphors (spherical vaterite) were 10~15 ㎛ and 1~3 ㎛ respectively. The excitation spectrum of CaCO₃:Sn^(2+) phosphors(spherical vaterite and spherical calcite) exhibited a maximum peak intensity at 230 nm with a narrow absorption band from 220 nm to 240 nm. At the excitation spectrum of 275nm, the emission spectrum of CaCO₃:Sn^(2+) phosphor (rhombohedral calcite) with SnCl₂of 2 mol% exhibited a maximum peak intensity at 465 nm of bright blue fluorescence. Also, the emission spectrum of CaCO₃:Sn^(2+) phosphors(spherical vaterite, spherical calcite) exhibited a maximum peak intensity at 465 nm but exhibited weak peak intensity than CaCO₃:Sn^(2+) phosphors(rhombohedral calcite).

敎職員의 慢性疾患 有病樣相

韓久雄,鄭鍾學,南澤昇 순천향대학교 1984 논문집 Vol.7 No.1

The mass health screening examination was excuted differently from the primary screening test and secondary precision test for 2,718 teachers in Gumi City and its adjoined three Guns, Kyungpook Province, 1982. The age of subjects was between 20 and 64 years old, and the percentage of men teachers showed 74 and the percentage of women teachers was 26. The results of the screening tests are summarized as follows: Of 2,718 subjects, 16.5% (6.8% for hypertension, 4.2% for liver disease, 2.8% for pulmonary tuberculosis and 1.8% for diabetes) required secondary precision test. Detected cases account for 63.8% of the 447 teachers taking secondary precision test, this was equivalant to 10.5% of the total examined teachers. 3.3% of the total examined teachers turned out to be confirmed cases and 7.2% of the total examined teachers was suspicious cases. The confirmed cases of the total examined teachers by disease were 1.0% for prevalence of pulmonary tuberculosis, 1.4% for prevalence of hypertension and 0.8% for prevalence of diabetes. The pervalence rate obtained by age group were 26.1% for 50~59 age group which was the highest rate group, 16.0% for 40~49 age group and 6.6% for 30~39 age group. It was shown that the rate increased by age. Although hypertension, diabetes and pulmonary tuberculosis increased by being old, in cases of liver disease, renal disease and anemia, 30~49 age group was marked as high rate.

이상설 : 한국 근대수학교육의 아버지

설한국,이상구,Seol, Han-Guk,Lee, Sang-Gu 한국수학사학회 2009 Journal for history of mathematics Vol.22 No.3

본 논문은 한국수학사에서 연구와 정리가 취약한 시기인 근대수학의 도입기를 조사하면서, 그 근대수학의 도입기에서 만나게 되는 인물인 이상설(李相卨)에 대한 조명을 시도한다. 시대적 상황이 모든 분야의 침체기를 가져온 구한말 이상설은 근대수학에서 당대를 대표하는 높은 학식을 쌓고 뛰어난 재능을 보여주었다. 그간 이상설에 대해 '근대수학교육의 아버지'라는 평가가 없지 않았음에도 불구하고 낯설게 느껴진다면, 그것은 그가 독립운동가로만 강하게 각인된 탓일 것이다. 하지만 그는 19세기말 조선 근대수학의 첫 번째 교과서 편저자이자 수학교사이기도 했음을 새겨둘 필요가 있다. 대유학자이면서도 선구적으로 외국어와 서양과학 특히 근대 서양수학을 이해한 면모는 한국이 배출한 천재 중 하나라는 평가가 결코 과장이 아님을 보여준다. 이에 본 논문에서는 한국 근대수학교육에 커다란 기여를 한 인물인 이상설의 교육과 학문 및 실천업적을 조명한다. 보재 이상설이 1886년경에 쓴 책 <수리>와 최초로 수학과 과학을 관립교육기관의 교육과정에 편성한 과정, 최초의 근대수학교과서로 여겨지는 <산술신서>의 발간, 민족교육기관인 '서전서숙'의 설립 및 운영을 포함한 보재의 업적을 한국수학사 관점에서 조명한다. 또한 <산술신서>의 목차와 구체적인 내용 및 1901년에 출간된 <신정산술>의 내용을 소개하고, 지금까지 부정확하게 알려진 <수리>와 <산술신서>에 관한 몇 가지 역사적 사실을 발굴하여 재조명한다. Most who have heard of Sang-Seol Lee know him for his contribution to the Korean independence movement nearly a hundred years ago. This paper, however, will discuss Lee's other great contribution to his country; that of being "The father of modern mathematical education in Korea". Lee passed the rigorous government officer examination with the highest honor and became a teacher for the royal prince. Later he became the president of Sunkyunkwan, a national institute of higher learning since 1398, and eventually a well-known university bearing the same name. Lee was also a highly regarded Confucian scholar and well versed in foreign languages. He wanted Korea to become a modern country and felt that the areas of science and engineering were studies that needed improving in order to achieve modernization. While researching Western textbooks on the subjects he realized that Western mathematics would be especially important for Korea. With that, it became his mission to integrate Western mathematics into the Korean educational system. This paper will explain the importance of Sang-Seol Lee's contributions to mathematic education in Korea and how it helped Korea become the modern nation it is today.

Layer-by-Layer Doping of Few-Layer Graphene Film

Gü,neş,, Fethullah,Shin, Hyeon-Jin,Biswas, Chandan,Han, Gang Hee,Kim, Eun Sung,Chae, Seung Jin,Choi, Jae-Young,Lee, Young Hee American Chemical Society 2010 ACS NANO Vol.4 No.8

<P>We propose a new method of layer-by-layer (LbL) doping of thin graphene films. Large area monolayer graphene was synthesized on Cu foil by using the chemical vapor deposition method. Each layer was transferred on a polyethylene terephthalate substrate followed by a salt-solution casting, where the whole process was repeated several times to get LbL-doped thin layers. With this method, sheet resistance was significantly decreased up to ∼80% with little sacrifice in transmittance. Unlike samples fabricated by topmost layer doping, our sample shows better environmental stability due to the presence of dominant neutral Au atoms on the surface which was confirmed by angle-resolved X-ray photoelectron spectroscopy. The sheet resistance of the LbL-doped four-layer graphene (11 × 11 cm<SUP>2</SUP>) was 54 Ω/sq at 85% transmittance, which meets the technical target for industrial applications.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/ancac3/2010/ancac3.2010.4.issue-8/nn1008808/production/images/medium/nn-2010-008808_0006.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nn1008808'>ACS Electronic Supporting Info</A></P>

유리폐기물과 하수슬러지 소각재의 고형화 처리연구

한상목,신대용,윤봉구,김승겸 강원대학교 부설 석재복합신소재 제품연구센터 2002 석재연 논문집 Vol.7 No.-

하수슬러지 소각재, 폐유리분말 및 고로슬래그의 고형화에 의하여 건자재를 제조하였다. 하수슬러지 소각재는 SiO_2와 Al_2O_3가 75 wt%, Fe_2O_3가 8.21 wt%, 폐유리분말은 SiO_2 71.4 wt%, Na_2O 14.43 wt% 및 CaO 9.32 wt%, 고로슬래그는 SiO_2 33.4 wt%, CaO 41 wt% 및 Al_2O_3 14.5 wt%를 함유하여 세라믹스 제조원료로 사용이 가능하였다. 하수슬러지를 800℃에서 2시간 하소한 무기질분말을 분쇄하여 하수슬러지 소각재를 제조하였다. 30∼70 wt%의 하수슬러지 소각재, 30∼70 wt%의 폐유리분말 및 10∼30 wt%의 고로슬래그를 혼함하여 950∼1,100℃에서 2시간 소성하여 시편을 제조하였다. 하수슬러지 소각재 첨가량이 감소하고 폐유리분말의 첨가량과 소성온도가 증가하면 부피비중과 압축강도는 증가하였으나 기공률과 흡수율은 감소하였다. 1,050℃에서 소성한 시편(No. 1, 3, 5 및 7)의 부피비중은 1.70∼1.83, 기공률과 흡수율은 0.3∼2.4% 및 0.1∼1.5%, 압축강도 272∼323 kgf/㎠을 나타내었다. 고로슬래그를 첨가하여 1,100℃로 소성한 시편(No. 8, 9, 및 10)의 부피비중은 1.82∼2.11 및 압축강도는 350∼671 kgf/㎠이었다. 하수슬러지 소각재, 고로슬래그 및 시편의 중금속출량은 매립지 침출수배출 허용기준치보다 낮아, 본 연구에서 제조한 시편은 주변 환경에 해가 없어 건자재로의 이용이 가능하였다. An experimental study for the constructional material by solidification using sewage sludge ash, waste glass powder and blast furnace slag was carried out in the senses of waste materials disposal and utilization. The reusability of sewage sludge ash, waste glass powder and blast furnace slag as a raw material in the manufacturing process of ceramics was highly expected because the chemical compositions of these waste materials were mostly SiO_2 and Al_2O_3. Sewage sludge ash was fabricated by calcined at 800℃ for 2 hours and obtained by the crushing. The mixture of 30∼70wt% of sewage sludge ash, 30∼70 wt% of waste glass powder and 10∼30 wt% of blast furnace slag were heated at 950∼1,100℃ for 2 hours. The density and the compressive strength of specimen increased with increasing the sintering temperature and decreasing the addition amount of sewage sludge ash, No. 1, 3, 5 and 7 specimens showed the bulk density of 1.70∼1.83, porosity of 0.3∼2.4%, water absorption of 0.1∼1.5% and compressive strength of 272∼323kgf/㎠. And, that of the No. 7 specimen heated at 1,100℃ increased with increasing the addition amount of blast furnace slag, and for No. 8, 9 and 10 specimens, bulk density was 1.82∼2.11 and compressive strength was 350∼671 kgf/㎠. An extraction test for specimen to detect toxic materials showed below the permitted standard of land-filling extractable heavy metal contents. It was founded that the specimen were useful for the constructional materials.

일부 아연광산지역에서의 Cadmium이 주민의 건강에 미치는 영향

남택승,홍종관,한구웅,박종안 順天鄕大學 1987 순천향대학논문집 Vol.10 No.1

일부 직장인의 정기 건강진단 실시 결과에 관한 고찰

남택승,홍종관,박종안,한구웅,김주자 순천향대학교 1987 논문집 Vol.10 No.2

서울, 천안, 구미에 각각 위치한 순천향대학 부속병원에서 서울, 천안, 구미 및 인근 군단위 지역의 공무원 및 사립학교 교직원을 대상으로 1986년 4월부터 동년 7월까지 집단건강진단을 실시하고 설문지를 배부, 조사하여 분석한 결과 다음과 같은 성적을 얻었다. 1. 1차 검사결과 유소견율은 수축기혈압 1.1%(남자 1.4%, 여자 0.2%), 이완기혈압 6.4%(남자 8.0%, 여자 1.5%)이었다. 2. 공복시혈당은 전대상자의 3.3%(남자 3.8%, 여자 1.2%)가 고혈당의 유소견율을 나타내었으며 뇨당은 1.3%(남자 1.6%, 여자 0.5%)의 유소견율을 보였다. 3. 순환기계질환에 관한 2차 검사유소견율은 수축기혈압 24.1%, 이완기혈압 74.9%.안저검사 41.1%, 심전도 검사 36.1%. 혈중 트리글리세라이드 검사 36.1%이었다. 4. 혈압의 연도별 변화는 '86년도의 혈압 평균치는 수축기혈압이 남자 122.7±15.7mmHg, 여자 113.0±13.1mmHg로 '82. '84년도에 비해 유의한 차가 있는 것으로 나타났으며(남 P<0.01, 여 P<0.05) 이완기혈압은 남자 80.9±15.1mmHg, 여자 73.8±23.9mmHg로 남자에 있어서만 (P<0.05). 연도별로 유의한 차가 있는 것으로 나타났다. 5. 혈압의 개인별 경시적 변화를 보면 수축기혈압의 경우 전체적으로 99.8%가 계속 정상으로 유지되고 1.2%는 고혈압 상태로 계속 유지되고 있는 것으로 나타났으며 이완기혈압의 경우는 전체적으로 92.8%가 계속 정상, 7.1%가 계속 고혈압으로 나타났다. 6. 혈중 콜레스테롤 평균치의 연도별 변화는 통계적으로 유의하게 증가되었다.(P<0.01). 7. 혈압과 관련요소들에 대한 상관관계에서 상관성이 있는 것은 수축기혈압의 경우 남자에 있어서 비만도, 뇨단백, 혈중 크레아티닌 및 콜레스테롤, 안저검사, 심전도검사, 혈중 트리글리세라이드이었고 여자에 있어서는 Stout지수, Rohrer지수, 뇨단백, 혈중 콜레스테롤, 안저검사, 심전도검사, 혈중 트리글리세라이드이었다. 이완기혈압의 경우 남자에 있어서는 뇨단백, 혈중 콜레스테롤, 안저검사, 심전도 검사, 혈중 트리글리세라이드이었고 여자에 있어서는 Stout지수, Rohrer지수, 뇨단백, 혈중 크레아티닌, 심전도 검사, 혈중 트리글리세라이드이었다. 8. 당뇨질환에 관한 2차 검사 유소견율은 공복시 혈당이 전체 51.8%, 식후 2시간 혈당치가 전체 41.2%이었다. 9. 공복시 혈당 평균치의 연도별 변화에서 '86년도 혈당 평균치는 남자 92.5±20.4㎎%, 여자 87.6±15.9㎎%이었고 연도별 증가는 통계적으로 유의하였다(P<0.01). 10. 혈당의 개인별 경시적 변화는 전체적으로 99.6%가 계속 정상, 2.32%가 계속 고혈당이었고 고혈당에서 정상으로, 정상에서 고혈당으로 된 경우는 각각 0.02%, 0.05%였다. 11. 혈당과 관련요소들에 대한 상관관계에서 상관성이 있는 것은 남녀 모두에서 Stout지수, Rohrer지수, 뇨당, 식후 2시간 혈당치이었다. 12. 건강행태에 관한 설문조사에서 자신의 건강상태에 대한 인식, 흡연, 음주, 식사에 대한 항목이 정상군과 유소견군간에 유의한 차가 없는 것으로 나타났다. Health Insurance Corporation which covers government officials and privated school faculties has held periodic health examination for the insured every other years since 1982 under the Insurance Law. The purpose is to detect diseases and trea diseases at their early stage. Three Soonchunhyang University Affiliated Hospitals located each in Seoul, Chunan, and Gumi city are committed to carry out the health examination. There are two steps in examination. The first step is for all insured, the second step is for the people whose results come out abnormal in the first step examination. Each item of the tests has been predetermined by the Corporation and most of them are to detect many chronic diseases e.g. hypertension, diabetes mellitus, liver disease, pulmonary Tbc., renal disease, and venereal disease. In spite of increasing concern regarding these diseases recently, we are lack of even basic statistics such as prevalence rate. Authors collected health examination results from three hospitals and analysed them.

TCXO의 정밀F-T측정을 위한 시스템 설계 및 제작

엄구남,한승호,박원병,정완영 경북대학교 센서기술연구소 2002 센서技術學術大會論文集 Vol.13 No.1

연폭로여성근로자들에서의 생물학적 연폭로 지표들의 상호관계

남택승,한구웅,김형아,김정만,이광묵 가톨릭대학 산업의학쎈타 산업의학연구소 1986 韓國의 産業醫學 Vol.25 No.3

For the purpose of obtaining of an effective biological monitoring data in terms of evaluation the health consequences of lead absorption, the female workers in the electronic industry who have been exposed to low-level lead occupationally were chosen as the subjects of our studies. We observed the 9 parameters in not only 305 lead-exposed female workers who have been exposed to lead occupationally also 254 normal female subjects who have not been exposed to lead occupationally. The parameters chosen for this study were as follows, blood lead (PbB), urine lead (PbU), δ-aminolevulinic acid in urine(ALAU), coproporphyrin in urine(CPU), zinc protoporphyrin in whole blood(ZPP), hemoglobin(Hb), hematocrit(Ht), δ-aminolevulinic acid dehydratase(ALAD) activity & ALAD activity ratio(A/R; absorbance at substrate pH 6.6/absorbance at substrate pH 5.8). The results obtained were as follows: 1. The average age of the lead-exposed female workers in the electronic industry and in the normal female subjects were 20.5±4.2 years and 21.7±3.5 years, respectively. 2. The average work duration of the lead-exposed female workers in the electronic industry was 26.4±19.4 months 3. The mean value of PbB of the lead-exposed female workers in the electronic industry and in the normal female subjects were 30.18±6.64㎍/100ml and 21.61±3.84㎍/100ml respectively. 4. In the lead-exposed female workers of the electronic industry and of the normal female subjects, the mean value of ZPP were 36.22±0.69㎍/100ml and 24.64±7.21㎍/100ml, respectively 5. In the lead-exposed female workers of the electronic industry and of the normal female subjects, the mean value of Hb were 13.98±0.57g/100ml and 14.09±0.66g/100ml, respectively. 6. The mean value of the lead-exposed female workers in the electronic industry were 55.07±17.61㎍/1 for PbU, 1.93±0.69mg/1 for ALAU, and 49.74±22.79㎍/1 for CPU, while in the normal female subjects, 44.27±15.76㎍/1 for PbU, 1.46±0.55mg/ 1 for ALAU, and 38.66±17.99㎍/1 for CPU. 7. Among various pairing of the parameters of lead exposure in the female lead-exposed workers and in the normal female subjects, the correlation between PbB and ZPP showed the highest coefficient value.