한국 국립공원 산림생태계의 수목 탄소저장량 평가

이상진,박홍철,박관수,김현숙,이창민,김진원,심규원,최승운,Lee, Sang-Jin,Park, Hong-Chul,Park, Gwan-Soo,Kim, Hyoun-Sook,Lee, Chang-Min,Kim, Jin-Won,Sim, Gyu-Won,Choi, Seung-Woon 한국환경복원기술학회 2022 한국환경복원기술학회지 Vol.25 No.3

The purpose of this study is to quantitatively evaluate the amount of carbon storage for trees in forest ecosystem to support the foundation for carbon neutrality implementation in Korea National Park. It targeted 22 national parks designated and managed as national parks in Korea, and conducted research on forest trees in the terrestrial ecosystem among various natural and ecological carbon sink. The survey and analysis method followed the IPCC guidelines and the National Greenhouse Gas Inventory in Korea. The amount of tree carbon storage in the forest ecosystem of Korea National Park was confirmed to be about 218,505 thousand CO₂-ton and the amount of carbon storage per unit area was 570.8 CO₂-ton per hectare. Compared to 299.7 CO₂-ton per hectare, the average carbon storage per unit area of the entire Korean forest, it was found that about twice as much carbon was stored when assuming the same area. In other words, it means that the tree carbon storage function of the national park is about twice as high as that of the average tree carbon storage function of entire Korean forest. It has great implications in Korea National Park not only provides biodiversity promotion and exploration services as a national protected area, but also performs excellent functions as a carbon sink.

Current Status of Industrial Waste Generation and Symbiosis Network in Gyeongsangbuk-do, South Korea

Jong-Hun Park,In-Gyung Jung,Jae-Gun Seo,Sang-Hyoun Kim 한국폐기물자원순환학회 2015 한국폐기물자원순환학회 학술대회 Vol.2015 No.05

This work aimed to analyze current status of by-products generation and industrial symbiosis network in Gyeongsangbuk-do, South Korea. Manufacturing sector of the province mainly consists of electronics, machinery, steel, metal-working industries. Gumi and Pohang have the 1st and 2nd largest worker population in the manufacturing sector. 21,950.7 ton/d of waste is generated from the industries in 2011, of which 82.2% is recycled. The industrial waste, which is not recycled, is mainly composed of sludge cake from domestic wastewater treatment plants, waste plastic, incinerator ash, and slag. Pohang is the largest generating city of both total and the non-recycled industrial waste in the province, and most of the waste is from Pohang steel industrial park. Symbiosis map in Pohang steel industrial park shows that most of the current material symbiosis in the industrial park is for waste refractories and slag.

Current Status of Industrial Waste Generation and Symbiosis Network in Gyeongsangbuk-do, South Korea

( Jong-hun Park ),( In-gyung Jung ),( Jae-gun Seo ),( Sang-hyoun Kim ) 한국폐기물자원순환학회(구 한국폐기물학회) 2015 한국폐기물자원순환학회 춘계학술발표논문집 Vol.2015 No.-

This work aimed to analyze current status of by-products generation and industrial symbiosis network in Gyeongsangbuk-do, South Korea. Manufacturing sector of the province mainly consists of electronics, machinery, steel, metal-working industries. Gumi and Pohang have the 1st and 2nd largest worker population in the manufacturing sector. 21,950.7 ton/d of waste is generated from the industries in 2011, of which 82.2% is recycled. The industrial waste, which is not recycled, is mainly composed of sludge cake from domestic wastewater treatment plants, waste plastic, incinerator ash, and slag. Pohang is the largest generating city of both total and the non-recycled industrial waste in the province, and most of the waste is from Pohang steel industrial park. Symbiosis map in Pohang steel industrial park shows that most of the current material symbiosis in the industrial park is for waste refractories and slag.

Soil characteristics of the Abies koreana communities at Korean national parks: focusing on Sobaeksan, Deogyusan, Jirisan National Parks

Chang Min Lee,Sang Jin Lee,Gwan Soo Park,Hyoun Sook Kim,Hong Chul Park 충남대학교 농업과학연구소 2022 Korean Journal of Agricultural Science Vol.49 No.2

대전시 도시숲의 식생 및 토양특성에 관한 연구

김동일 ( Dong Il Kim ),박관수 ( Gwan Soo Park ),김길남 ( Gil Nam Kim ),김현숙 ( Hyoun Sook Kim ),이항구 ( Hang Goo Lee ),박범환 ( Beom Hwan Park ),이상진 ( Sang Jin Lee ),강길남 ( Kil Nam Kang ) 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2011 한국환경복원기술학회지 Vol.14 No.2

This study was conducted to suggest appropriate methods for management of urban forest after investigating the present condition and problems of urban forests by analyzing vegetation and soil properties in urban forests in the Daejeon. On the basis of our research, Pinus rigida dominate Gyejoksan and Bomunsan. Pinus densiflora dominate Wolpyeong park and Quercus acutissima dominate Namsun park. On the basis of our result of analysis of soil chemical properties, all investigated areas have low pHs, available phosphates and exchangeable cations. They indicate that the soil of those areas have been acidifying progressively. Soil hardness measurements were conducted to know the conditions of trampled soils and the results of them show that soil hardness in Namsun park was higher than the others. This indicates that human interference affect the health of the urban forest.

산지에 따른 쌀의 화학적 특성 및 취반특성에 관한 연구

박미현,우상규 漢陽大學校 韓國生活科學硏究所 1995 韓國 生活 科學 硏究 Vol.- No.13

This study was performed to compare the chemical properties and cooking qualities of Chucheongbyeo grown in Icheon and other areas such as Suwon, Iri and Milyang. 1.Chemical properties No significant difference was observed in protein and fat contents. Tyrosine content was significantly lower(P<0.01) in Icheon rice. The contents of stearic acid(P<0.05) and Linoleic acid(P<0.01) were significantly higher but the ratio of oleic to linoleic acid was lower(P<0.05) in Icheon rice, Mineral and Amylose contents were not significantly different. 2.Cooking qualities There was no significant difference in water uptake, pH, iodine intensity and soluble solids of residual liquid of 30 minutes-cooked rice. Icheon rice showed lower expanded volume(P< 0.05) of cooked rice. Physical properties of cooked rice such as hardness, cohesiveness, stickiness and the ratio of hardness to stickiness showed no significant difference.

사람 치수 세포와 치주 인대 세포의 유전자 발현에 관한 비교 연구

소현,박상혁,최기운 대한치과보존학회 2009 Restorative Dentistry & Endodontics Vol.34 No.5

The purpose of this study was to characterize functional distinction between human dental pulp cells(PC) and periodontal ligament cells(PDLC) using cDNA micro array assay and to confirm the results of the microarray assay using RT-PCR. 3 genes out of 51 genes which were found to be more expressed(>2 fold) in PC were selected, and 3 genes out of 19 genes which were found to be more expressed(>2 fold) in PDLC were selected for RT-PCR as well. According to this study, the results were as follows: 1. From the micro array assay, 51 genes were more expressed (2 fold) from PC than PDLC. 2. RT-PCR confirmed that ITGA4 and TGFβ2 were more expressed in PC than in PDLC 3. From the micro array assay, 19 genes were more expressed (2 fold) from PDLC than PC. 4. RT-PCR confirmed that LUM, WISP1. and MMP1 were more expressed in PDLC than in PC. From the present study, different expression of the genes between the PC and PDLC were characterized to show the genes which play an important role in dentinogenesis were more expressed from PC than PDLC, while the genes which were related with collagen synthesis were more expressed from PDLC than PC. 본 연구는 사람 치수세포 및 치주인대세포의 차이를 알아보고자 배양한 각각의 세포를 CDNA microarray assay를 통하여 유전자의 발현정도의 차이를 비교하였다. 그 결과를 바탕으로 각각의 세포에서 2배 이상의 유전자 발현의 차이를 보이는 유전자중 특징적인 3가지 유전자를 선택하여 RT-PCR로 검증한 결과 다음과 같은 결론을 얻었다; 1. Microarray assay 결과, 치주인대 세포에 비해 치수 세포에서 2배 이상 발현한 유전자 수는 총 51개가 나타났다. 2. RT-PCR의 결과, 치주인대세포에 비해 치수 세포에서 ITGA4, TGF-β2 등이 높게 나타났다. 3. Microarray assay결과, 치수 세포에서 비해 치주인대 세포에서 2배 이상 발현한 유전자 수는 총 19개가 나타났다. 4. RT-PCR의 결과, 치수 세포에 비해 치주인대세포에서 LUM, WISP1, MMP1 등이 높게 나타났다. 본 연구 결과로 치수세포에는 상아질 형성에 관여하는 특징적인 유전자가 치주인대세포에 비해 높게 발현되었으며, 치주인대세포에는 교원질 합성에 관여하는 특징적인 유전자가 치수세포에 비해 높게 발현되어, 치수세포와 치주인데 세포는 유전자 발현의 차이가 나타남을 알 수 있었다.

기포부상분리법에 의한 Cu(Ⅱ)의 제거에 있어서 유동특성에 관한 연구

김현수,박주량,이승무 연세대학교 산업기술연구소 1985 논문집 Vol.17 No.1

This investigation was carried out to study the dynamic characteristics of the removal of Cu(II) from wastewater by the technique of foam fractionation, using sodium-dodecylbenzenesulfornate (DBS) as a foaming agent. The surface excess concentration of Cu(II) with the change of DBS concentration in feed solution and superficial gas velocity was obtained by measuring foam diameter. The value of HTU with the change of DBS concentration and superficial gas velocity was determing by measuring superficial liquid velocity. The experimental results are obtained as follows: 1. When Cu(II) concentration in feed solution is constant, the surface excess concentration of Cu(II) increased as DBS concentration increased. But decreased as superficial gas velocity increased. 2. Equilibrium constant (Tcu/Cw) between the surface excess concentration of foam and the concentration of interstitial liquid increased as DBS concentration in feed solution increased. However it was not affected by the change of superficial gas velocity. 3. For the superficial gas velocity above 10cm/min, the empirical equation was derived as follows: HTU = 2 exp [0.642(??) - 0.19(??)] where, C??(DBS) denotes the DBS concentration in feed solution, and v is the superficial gas velocity.

칼슘과 아연으로 치환된 Y0.8 Pr0.₂ Ba₂ Cu₃ O7_δ 의 전기 및 자기적 성질에 관한 연구

김성재,전인,박영민,강재필,노태호,박현진,최숙자,송승기 명지대학교 자연과학연구소 1996 자연과학논문집 Vol.14 No.-

전이온도가 72K인 고온초전도체 Y?P?B?Cu?O?에서 초전도성을 감소시키는 Pr원소자리에 Ca과 Zn를 적당히 치환시켜 자기적 성질을 연구하였다. 초전도 전이온도(Tc)는 Ca이 치환된 시료의 경우 80~85k의 범위에서 측정되었으며, Zn가 치환된 경우에는 35~49K의 값을 보였다. 비저항의 온도 변화로부터 결정된 전기적 전이온도는 온도에 대한 자기모우먼트으 변화에서 구한 자기적 전이온도와 비슷한 값을 보였다. 자기이력곡선으로부터 Bean의 모델을 이용하여 Hcl(저임계자기장), Hc?(고임계자기장), 반자성정도, 임계전류밀도를 측정하였다. 이러한 성질들은 시료 내에 Ca의 치환량이 많아질수록 증가하였으며, Zn가 많아질수록 급격히 감소하였다. 특히 임계전류밀도는 x=0.0인 시료는 1.60x10?A/㎠이었으며 Ca이 치환된 시료는 1.30~1.98x10? A/㎠, Zn가 첨가된 시료는 3.5x10?~1.3x10?A/㎠의 값으로 계산되었다. 이것은 시료 내에서 Ca은 초전도성을 증가시키고, Zn는 초전도성을 감소시키는 것을 의미한다. We have studied magnetic properties as a appropriate substitute of Ca and Zn element for Prelement which reduces superconducting properties in the high-temperature superconductor Y?Pr?Ba?Cu?O? of transition temperature 72K. When Ca is put into, the critical temperature(Tc)showed the value of measurement at the range of 80~85K while for Zn the Tc had the range of 35~49K. The electric critical temperature determined by the temperature dependence of resistivity had a similar data to the magnetic field), Hc?(high critical magnetic field), diamagnetic ratio and critical current density have observed by Bean's model from the magnetic hysterisis curve. These properties were increased with adding Ca and abruptly decreased with adding Zn in the samples. Especially, the critical current density of x=0.0 sample was calculated at 1.60x10?A/㎠ and those of the other Ca-added samples at the range of 1.30~1.98xA/㎠and those of Zn-added samples at the range of 3.50x10?~1.30x10?A/㎠. These mean that Ca increases supercondecting properties in the sample and Zn element decreases them.

격리성장동물에 있어서 공격성의 정도와 위궤양 발생과의 관계

장현갑,박순권,강성군 한국심리학회 한국심리학회지 생물 및 생리 Vol.6 No.1

본 연구는 격리사육에 의한 공격성-지배성의 정도가 스트레스성 위궤양의 발생에 어떠한 영향을 미치는가를 알아 본 것이다. 생후 21±2일에 이유시킨 생쥐(ICR)를 150일간 격리사육한 후 실험적으로 마련한 자극동물에 대한 공격행동의 빈도에 따라 “공격성-무”, “공격성-하”, “공격성-중”, “공격성-상”으로 구분하고, 24시간 후 1시간 동안의 저온-구금 스트레스를 가한 후, 1시간 30분의 휴식기간을 거쳐 위를 추출하여 위궤양 발생정도를 평정하였다. 얻어진 결과는 다음과 같다. 첫째, “공격성-하”집단과 “공격성-상”집단의 위궤양 발생이 동료 동물에 비해 낮았고, 둘째, “공격성-무”집단과 “공격성-중”집단의 위궤양 발생 정도는 동료 동물과 통계적인 차이가 없었으며, 셋째, “공격성-중”집단의 위궤양 발생은 나머지 3개의 격리집단보다 유의미하게 높았다. 따라서 본 연구의 결과는 정서반응을 적절하게 표현하지 못하고 억압하면 신체에 병리적인 결과가 나타난다는 견해나, 분노와 같은 불쾌 정서를 적절하게 표현하지 못하면 위궤양이나 고혈압과 같은 정신신체 질병이 발생될 수 있다는 견해를 지지한다. The purpose of this study was to examine the effects of the aggression and social dominance on stress ulcer in isolated mice. Subjects were ICR strain of mice that were separated from their own litters on the 21st day of life and reared in isolation and in group for 150 days. All animals divided into four groups, "no-aggressiveness", "low-aggressiveness", "middle-aggressiveness" or "high-aggressiveness" on the basis of the frequency of aggressive behaviors to the stimulating animals. Twenty-four hours after aggression rating, animals were exposed to cold-restraint stress for an hour, and then stomach ulcer was estimated under operational microscope. The results were as follows: First, Ulcer scores of "low-aggressiveness" and "high-aggressiveness" group were lower than group rearing animals. Second, "no-aggressiveness" and "middle-aggressiveness" group were not different from group animals in ulcer score. Third, Ulcer scores in "middle-aggressiveness" group were higher than another three isolation groups. The results of this study hold similar views that if the reaction of emotion is suppressed, physical diseases tend to happen or if unpleasure feeling such as anger does not vent, various psychosomatic diseases such as stomach ulcer or hypertension can be induced.