This study analyzed the relationship between distribution of Bolboschoenus planiculmis which is main food source of swans (national monument species) with environmental factors, discharge, rainfall, and salinity in Eulsuk-do from 2020 to 2023. The distribution area of B. planiculmis in Eulsuk tidal flat was 103,672 m2 in 2020, 95,240 m2 in 2021, 88,163 m2 in 2022, and 110,879 m2 in 2023, and represents a sharp decrease compared to the 400,925 m2 area recorded in 2004. From 2020 to 2023, the growth densities of B. planiculmis were 243.6±12.5 m-2, 135.45±7.38 m-2, 51.10±2.54 m-2, and 238.20±16.36 m-2, respectively, and the biomass was 199.89±28.01 gDW m-2, 18.57±5.12 gDW m-2, 6.55±1.12 gDW m-2, and 153.53±25.43 gDW m-2 in 2020, 2023, 2021, and 2022, respectively. Based on discharge during May~July, which affects plant growth, the left gate discharge of the estuary barrage from 2020 to 2023 was 62,322 m3 sec-1, 33,329 m3 sec-1, 6,810 m3 sec-1, and 93,641 m3 sec-1, respectively; rainfall was 1,136 mm, 799 mm, 297 mm, and 993 mm, respectively; and average salinity was 14.7±9.4 psu, 21.1±4.7 psu, 26.1±2.7 psu, and 14.5± 11.1 psu, respectively. In 2022, cumulative rainfall (978 mm, about 70% of the 30-year average) and discharge (43,226 m3 sec-1) decreased sharply, resulting in the highest mean salinity (25.46 psu), and the distribution area, density, and biomass of the B. planiculmis decreased sharply. In 2023, there was a rise in discharge with an increase in rainfall, leading to a decrease in salinity. Consequently, this environmental change facilitated the recovery of B. planiculmis growth.

Chlorothalonil is continuously introduced into the marine environment and has significant toxic effects on various marine organisms, however, research on its effect on seaweed is limited. Therefore, we analyzed the impact of chlorothalonil on the early life stages of major aquaculture species in Korea, Undaria pinnatifida. U. pinnatifida female gametophytes were exposed to different concentrations of chlorothalonil (0, 0.03, 0.05, 0.10, 0.20, and 0.40 mg L-1), and their survival rate and relative growth rate were analyzed. The no observed effect concentration (NOEC), lowest observed effect concentration (LOEC), and median lethal concentration (LC50) for female gametophyte survival were determined as 0.05, 0.10, and 0.141 (0.121-0.166) mg L-1. NOEC, LOEC, and median effective concentration (EC50) for relative growth rate were 0.10, 0.20, and 0.124 (0.119-0.131) mg L-1. Therefore, female gametophytes of U. pinnatifida are expected to experience toxic effects at concentrations above 0.05-0.10 mg L-1 of chlorothalonil. These research findings are anticipated to serve as crucial reference data for evaluating the effects of chlorothalonil on the health of U. pinnatifida in the early life stages.

Freshwater jellyfish, a type of jellyfish exclusively found in freshwater, has a limited number of species but is found globally. However, their ecology and causes of occurrence are largely unknown. Therefore, understanding the distribution of polyps, which produce the larvae of freshwater jellyfish, can provide important data for comprehending their ecology. This study aims to explore the COI gene of freshwater jellyfish using environmental DNA from the microbial film in the Miho River system. Among the 12 survey points in the Miho River watershed, genetic material of freshwater jellyfish was detected in 8 points, mainly located upstream near reservoirs. These genetic materials were identified as genes of the well-known freshwater jellyfish species, Craspedacusta sowerbii. Notably, the C. sowerbii genes found in the Miho River watershed survey points were closely related to a species previously discovered in Italy. Consequently, utilizing environmental DNA to explore the genetic traces of freshwater jellyfish enables rapid screening of areas with a high likelihood of freshwater jellyfish occurrence. This approach is deemed to provide crucial information for understanding the distribution and ecology of freshwater jellyfish in Korea.

Microphysogobio rapidus is designated as endangered species class I by Ministry of Environment, and its distribution and population have been gradually declining, and it is now limited to the Nam River and some tributary streams of the Nakdong River Watershed. For the restoration of this highly endangered species, it is important to identify the causes of the decline and establish appropriate restoration plans. However, due to lack of basic data and ecological research, most steps are stagnant. Therefore, in this study, we identified the differences in the physical, biological, and sociological habitats between current and past distributed sites through field surveys and literature reviews. As a result of the field survey, there were differences in conductivity between the current and past distributed sites, and fish communities were also showed differences. The literature data also showed that the physico-chemical values of the past distributed sites were generally unfavorable, which generated negative consequences on biological factors. In particular, the effects of urbanization were found to be a major factor affecting the habitat of M. rapidus. Habitat stabilization is crucial for the recovery of this endangered species. However, in the past distributed sites, disturbances such as stream development and weir construction have altered streams physico-chemically and result in changes of M. rapidus. Therefore, a comprehensive plan that considers both stream connectivity and water quality is needed to manage and restore the habitat of M. rapidus.

The air dilution olfactory method to measure complex odors needs to store and carry odor samples from the field sampling until the analysis in laboratories. Until the analysis of sample in the laboratory, odor dilution factor (odor sensitivity) in the sample bag may decrease over time depending on the characteristics of each odor substances. This is one of the limitation for the air dilution olfactory method. Thus, the air dilution device enable to measure without loss in complex odors of samples. Recently, many studies on the performance test of on-site air dilution devices, i.e., field olfactometer, has been conducted to figure out the feasibility of the field olfactometers. In this study, seven odor samples were collected from five odor emission source sites. And comparative analysis with the air dilution olfactory method was carried out to assess the field applicability of the olfactometer. As results, the performance of the field olfactometer used in this study is regared as the affordable method. The dilution factors from between two methods showed the similar values, indicating low values of standard deviations. In order to ensure the accuracy and precision of measurement data using the field olfactometer, methodology minimized variables (that may affect measurement) needs to establish.

1960년 4·19혁명은 이승만정권의 3.15부정선거와 부정·부패에 분개하 여 학생과 시민들이 정권을 붕괴시킨 역사적인 민주화운동으로 평가된 다. 4·19혁명은 이승만정권의 독재 속에서 한국의 권위주의적 정치구조 와 당시 낙후된 경제수준, 미성숙한 시민의식 환경에서 학생과 시민들이 자발적으로 일어나 새로운 권력을 창출하게 했다는 점에서 한국정치의 분기점이 되었다. 4·19혁명은 미완성적 성격이었음에도 한국민주화운동 사에서 1979년 부마항쟁과 1980년 5·18광주민주화운동, 1987년 6월항쟁 에 이르기까지 한국민주화운동의 밑거름이 되었고 선구자적 역할을 했다 는데 역사적 의의가 있다. 4·19혁명은 제1공화국을 붕괴시킨 후 헌법개 정을 통해 국민기본권 보장을 강화하고 제2공화국을 출범시켜 한국헌정 사에서 법치주의와 민주주의 기반조성과 민주헌정체제를 만들었다는데 헌법적 가치평가를 할 수 있다. 한국정부는 보훈정책을 추진함에 있어 국가적 차원에서 미국, 호주, 캐나다 등 보훈 선진국 사례를 참고하여 국 가유공자와 희생자, 유족들에게 실질적인 보훈정책추진과 보훈선양이 이 루어지도록 더욱 개선해야 한다.

In this study, changes in the microbial ecosystem of the Yeongheungdo island coastal waters were investigated for five years to collect basic data. To evaluate the influence of distance from the coast on the microbial ecosystem, four sites, coastal Site (S1) and 0.75, 1.5, and 3 km away from the coast, were set up and the changes in physicochemical and biological factors were monitored. The results showed seasonal changes in water temperature, dissolved oxygen, salinity, and pH but with no significant differences between sites. For nutrients, the concentration of dissolved inorganic nitrogen increased from 6.4 μM in April-June to 16.4 μM in July-November, while that of phosphorus and silicon phosphate increased from 0.4 μM and 2.5 μM in April-June to 1.1 μM and 12.0 μM in July-November, respectively. Notably, phosphorus phosphate concentrations were lower in 2014-2015 (up to 0.2 μM) compared to 2016-2018 (up to 2.2 μM), indicating phosphorus limitation during this period. However, there were no differences in nutrients with distance from the coast, indicating that there was no effect of distance on nutrients. Phytoplankton (average 511 cells mL-1) showed relatively high biomass (up to 3,370 cells mL-1) in 2014-2015 when phosphorus phosphate was limited. Notably, at that time, the concentration of dissolved organic carbon was not high, with concentrations ranging from 1.1-2.3 mg L-1. However, no significant differences in biological factors were observed between the sites. Although this study revealed that there was no disturbance of the ecosystem, further research and more basic data on the microecosystem are necessary to understand the ecosystem of the Incheon.

본 연구는 광질이 장미의 꽃잎 착색에 미치는 영향에 대한 기초자료를 얻고자 수행했다. 꽃눈 분화가 시작된 미니 장미 5품종 ‘Berigamo’(yellowish white), ‘Elpaso Yellow’(yellow), ‘Elpaso’ (bicolor, yellow+orange), ‘Meggiore’(pink), ‘Maasland’(red)를 대상으로 3주간 광질처리를 실시하였다. 광질처리는 300μmol·m-2·s-1 백 색광(W) 대조구와 210μmol·m-2·s-1 백색광에 적색(R), 녹색(G), 청색(B), 원적외선(FR) 및 자외선 B(UVB)을 각 90μmol·m-2·s-1 보광하여 대조구와 동일한 PPFD로 설정하였다. 광질의 꽃잎착색 효과는 품종 특이적으로 R, FR, UVB 보광은 특히 분홍색 품종에서 각각 19.0%, 28.8%, 6.4% 착색을 증진시킨 반면, G와 B 보광은 안토시아닌 함량을 각각 17.8%, 19.0% 감소시켰 다. 황색 품종에서는 UVB보광으로 카로티노이드 함량이 19.6% 증가하였다.

A new brown variety of Flammulina velutipes, referred to as ‘Asakgold,’ was bred by crossing two monokaryons isolated from the “Geumhyang2ho” and “Garlmoe” varieties. The pileus color of the new variety is light brown and its shape is hemispherical. During bottle cultivation, the period necessary for mycelial growth was 40 days, 9 days for primordia formation and 15 days for fruiting body growth. The total cultivation period was 64 days, which was similar to that of the control variety “Yeoreumhyang1ho.” The pileus of the new variety was similar and the stipe was thinner and longer than that of the control. The number of valid stipes per bottle was 495, which was 37 % higher than that of the control (362), and the yield was 214 g, 16 % higher than that of the control (185 g). The -glucan content was 28.69 %, which was observed to be 1.6 times more than that of the control.

The effects of punching treatment on mycelial culture and fruiting body productivity were investigated in a new Lentinula edodes cultivar, “Jadam”, in sawdust medium for the stable production of oak mushroom. As the punching volume and number increased, the weight loss rate and color difference increased and the L value decreased. After spawn inoculation, the sawdust medium temperature and CO2 concentration reached their highest values at 33 and 19 days of incubation, respectively. The O2 concentration showed the lowest value on the 14th day of incubation, which was the opposite pattern to the CO2 concentration. As the punching volume and the number increased, the medium temperature and O2 concentration increased, and the CO2 concentration decreased. Higher punching volumes and numbers resulted in higher temperatures and lower CO2 concentrations. The best fruiting body yield was 5 × 70 mm - 30 (punching diameter × depth - number), and the total yield after three cycles was 644.7 g.

A new spore-less cultivar Lentinula edodes ‘Daedam’ was bred from monokaryotic strains of ‘LE15401-24’ and ‘LE192118-10’. The optimum temperature for mycelial growth of ‘Daedam’ on potato dextrose agar was 22~25oC. Total cultivation period of the new cultivar, from inoculation to its first harvest, was 134 days, similar to that of the control cultivar ‘Hwadam’. Total yield of ‘Daedam’ was 222g per 3kg substrate, and was lower than that of control cultivar(266.0g). The fruiting body of ‘Daedam’ had a thick and small pileus and a longer stem compare to control cultivar. As a result of a analyzing the productivity of ‘Daedam’ on the different substrate types, the biological efficiency was 26.7% in the 1.2kg cylindrical substrate(CS), which was higher than that of the 3kg rod-type substrate(RS). 'Daedam' had a similar yield compared to 'Hanacham' in first fruiting body production, but the cultivation period was 40 days shorter. Therefore, 'Daedam' can only harvest fruiting bodies once, it is thought that it can be used as spore-less oak mushroom cultivar for short-term cultivation instead of 'Hanacham' in mushroom farms.

본 연구에서는 뇌혈류 신호를 측정할 수 있는 시변자계 기반의 비접촉식 직물센서를 설계하여 뇌혈류 신호 검출 및 감성평가의 가능성을 탐색하고자 하였다. 직물센서는 40 denier의 은사를 30합사 한 후 컴퓨터 기계 자수하여 코일 형 센서로 구현하였다. 뇌혈류 측정 실험을 위해 코일형 센서를 경동맥 부위에 부착하고, ECG (Electrocardiogram) 전극과 RSP (Respiration) 측정 벨트를 부착 및 착용하도록 하였으며, 동시에 초음파 진단기기를 사용해 도플러 초음 파 검사(Doppler Ultrasonography)를 수행하여 혈류 속도를 측정하였다. 피험자에게 Meta Quest 2를 착용시키고, 실 험을 위해 조작된 영상 시각 자극을 보여주면서 혈류 신호를 측정한 후 시각 자극에 대한 감성평가 설문지를 작성하 도록 하였다. 측정 결과, 도플러 초음파 검사를 통해 측정된 혈류 속도 신호에 변화가 생길 때 직물센서로 측정한 신호도 함께 변화하는 것으로 나타났다. 이를 통해 코일형 직물센서를 이용하여 뇌혈류활동 신호를 측정할 수 있다 는 것을 검증하였다. 또한, 감성평가를 위하여 ECG 신호와 PLL 신호(직물센서 신호)에서 추출한 HRV를 계산해서 비교한 결과, 시각 자극으로 인한 교감신경계와 부교감신경계의 활성화에 따른 비율의 변화에 대해서는 직물센서로 측정한 신호와 ECG 신호를 이용해 계산한 값이 비슷한 경향을 보이는 것으로 나타났다. 결론적으로, 본 연구에서 개발된 시변자계 기반의 코일형 직물 센서를 통해 뇌혈류 변화 측정 및 감성 모니터링이 가능할 것으로 사료된다.

The objective of this study was to achieve biological control of green mold disease in Pyogo mushrooms using antagonistic microorganisms. Bacillus subtilis BSM320 cells inhibited mycelial growth by 48–60% against three Trichodermaisolates including T. hazianumisolated from the substrates of Lentinula edodes, showing their antifungal activity.The bacteria were cultured to a high density of 4.2 x 109±113.7 cfu/mlin aqueous extract of composted spent mushroom substrates of L. edodes containing 1% glucose and showed a higher growth rate than that observed when using the commercial medium, Luria-Bertani broth. The bacterial culture showed a 75% protective effect without damaging the mushroom fruiting bodies. These results suggest that B. subtilis BSM320culture is suitable for biological control of green mold disease during mushroom cultivation.

We conducted an on-site application study at the livestock cooperative fertilizer plant to compare the composting period, temperature change, moisture content, and chemical properties between livestock manure compost using sawdust as a moisture regulator with those using spent oyster mushroom substrate. The composting period, moisture content, and fertilizer composition of compost containing spent oyster mushroom substrate did not differ from that of conventional compost mixed with sawdust after the first and second fermentation and post-maturation stages, it was suitable as a material for manufacturing livestock manure compost. The spent oyster mushroom substrate also lower the production cost of livestock manure compost by replacing the more expensive sawdust. The developed technology is expected to contribute towards the utilization of by-products of the oyster mushroom harvest while simultaneously producing high quality livestock manure compost.

이 글은 현재 군산 동국사 대웅전에 소재한 석가삼존상을 원래의 봉안처인 금산사의 역사 속에서 다루는 한편 그 제작을 맡은 조각승들의 관계를 살피는 데 목적이 있다. 석가삼존상은 내부에서 발견된 원문에 따르면 1650년에 제작하여 김제 금산사에 봉안한 것이었다. 이를 위해 불사에 호연태호와 벽암각성이 재차 함께하였고, 당시 금산사에 머무르 며 경내 불사에 적극적이었던 승려들 및 차조각승 관해와 작업한 이력이 있는 조각승들이 여 러 소임으로 참여하였다. 이는 금산사가 17세기 중반까지도 그 위상을 유지하면서 인적교류 의 장으로 활용되었음을 드러낸다. 수조각승 응매의 조형 의도를 가장 많이 반영했을 석가삼존상은 차조각승 관해 및 관해 관련 조각승의 불상과 닮은 조형 요소를 보여준다. 기록에 따르면 응매와 관해는 각기 다른 조각승을 보조하며 수련기를 보냈고, 차조각승 관해는 본 상을 조성하기 전부터 수조각승을 맡아 회감, 초안 등의 승려들과 작업하였다. 즉 석가삼존상은 조각승 응매의 17세기 중반 교류 및 활동을 추정하는 실마리로 중요하다. 한편 불상은 동국사로 이운 전까지 금산사 대장전에 놓여있었다. 석가삼존상은 원 봉안 전각을 알 수 없지만, 금산사 봉안을 위해 제작된 후 언젠가 대장전에 놓였고, 1922년 대장전과 함께 이건 및 1955년경 동국사로의 이운이라는 복잡한 궤적이 확인된다. 석가삼존상을 금산사와 결부하여 살펴보고 불상을 제작한 상위 조각승들의 관계를 밝히 려는 시도는 금산사 석가삼존상과 그 조각승 응매, 관해를 보다 입체적으로 해석하는 데 도 움이 될 것이다.

The study used the whole-life carbon assessment method to conduct a thorough carbon-neutral evaluation of a standard steel structure. To further assess carbon emissions, 11 design-changed models were evaluated, with changes made to the span between beams and columns. The results of the carbon emission assessment showed savings of approximately 13.1% by implementing the stage of the beyond life cycle. Additionally, the evaluation of carbon emissions through design changes revealed a difference of up to 42.2%. These findings confirmed that recycling and structural design changes can significantly reduce carbon emissions by up to 48.6%, making it an effective means of achieving carbon neutrality. It is therefore necessary to apply the stage of beyond life cycle and structural change to reduce carbon emissions.

목적 : 본 연구는 발달장애인의 도전적 행동 완화를 위한 작업치료 중재에 대해 알아보기 위하여 체계적으 로 문헌을 고찰하고 중재 효과를 비교하고자 하였다. 연구방법 : 2000년 1월부터 2022년 7월까지 Pubmed, Cumulative Index to Nursing and Allied Health Literature(CINAHL), Education Resources Information Center(ERIC), Cochrane Library, Excerpta Medica Database(EMBASE), 학술연구정보서비스(Research Information Sharing Service; RISS)에서 문헌을 검색하였다. 국문 검색용어은 “행동 문제” OR “문제행동” OR “부적응 행동” OR “비정상 행동” OR “행동 이상” OR “도전적 행동” AND “작업치료” AND “발달장애” OR “자폐” OR “지적장애”를 사용하였다. 영문은 “behavioral disturbance” OR “problem behavior” OR “maladaptive behavior” OR “aberrant behavior” OR “behavioral abnormalities” OR “challenging behavior” AND “occupational therapy” AND “developmental disability” OR “autism” OR “intellectual disability”를 사용하였다. 검색된 문헌을 Patient, Intervention, Comparison, Outcome(PICO)양식에 따라 체계적으로 분석하였다. 결과 : 도전적 행동을 완화하기 위한 작업치료 논문은 총 14편이 선정되었다. 감각치료, 놀이기반 치료, 매개 치료 접근은 도전적 행동 완화에 효과가 있지만 그 외 다른 기능의 향상은 확인할 수 없었다. 반면 인지학습적 접근과 긍정적행동지원 접근은 도전적 행동 완화 및 학교생활 기능향상에 효과가 있었다. 또 한, 부모 교육은 부모의 양육 스트레스를 완화하고 양육 기술을 향상함으로 아동의 도전적 행동 완화에 효과적이었지만, 아동의 일상생활 기능향상까지 치료 효과를 확장하는 데는 제한이 있었다. 결론 : 발달장애인의 도전적 행동을 완화하기 위해 다양한 작업치료 중재가 적용되었다. 작업치료는 도전 적 행동뿐만 아니라 일상생활 기능향상에도 도움이 되었다. 향후 과학적 연구를 통해 도전적 행동 중재 에 대한 임상적 근거가 뒷받침되기를 기대한다.