This study discusses regeneration of mercury-contaminated, activated carbon from adsorption in the mercuryrecovery process. Mercury in activated carbon was desorbed by thermal treatment, and the regeneration efficiency was confirmed by mercury content and iodine adsorption comparing new and spent activated carbon. Up to 95% of mercury desorbed and up to 86% adsorption performance regenerated at 673 K. Therefore, it is expected that activated carbon can be reused many times by regenerating it through thermal treatment without disposing of mercury-containing activated carbon.

In this study, structural behaviors such as ultimate strength and fracture shape of duplex stainless steel (STS329FLD) fillet-welded connections according to welding direction were investigated through monotonic tensile test. Main variables are weld length and welding direction against the loading direction. Specimens of SDTFW series (transverse to the loading direction) and SDLFW series (longitudinal to the loading direction) failed by tensile fracture and shear fracture, respectively. Ultimate strengths got higher with the increase of weld length and SDTFW series showed higher ultimate strengths than SDLFW series.

This study introduces the result of dynamic tests carried out for the field application of ferro-nikel slag powder applied PHC PILE. For the test, a high strength, ultra high strength FNS PHC PILE was used as a test body, and a PHC PILE with a diameter of 600mm and a length of 20m was applied.

This study was performed an evaluation of compressive strength of NSB mortar according to BP contents and curing conditions. As the results of study, compressive strength increase as BP content and curing temperature was increased. When considering the strength properties of BP NSB mortar, the proper BP content and curing temperature are thought to be 20% and 60℃ respectively.

This study is to prepare prediction method of the durability establishment for the effective maintenance of reinforced concrete substation structures. For this study, we investigated research trends about the foreign practices relating durability design.

This guideline refers to expansion joints with a diameter of 300mm or more. It will check the condition of large-capacity expansion joint, detect abnormal behavior and damage early, take appropriate measures such as repair and replacement, and secure user's safety and smooth traffic flow. And to provide the basic data necessary for the maintenance work of the management subject to be carried out for the purpose of To this end, we investigated and analyzed the existing joint damage, repair and replacement cases, suggested proper repair and replacement methods and preventive maintenance plan.

In this study, we evaluate the structural performance of upper and lower separated non-weld PHC pile connectors to develop more economical and practical upper and lower separated non-weld PHC pile connectors.

This paper is concerned with the eco - friendly precast concrete parking block method which can reduce the environmental problem and maintenance cost by applying the high - strength concrete block manufactured at the factory, will be.

The removal characteristics of As and Se ions from aqueous solution by hexadecyl trimethyl ammonium bromide (HTMAB) modified anthracite (HTMAB-AT) were investigated under various conditions of contact time, pH and temperature. When the pH is 6, the zeta potential value of anthracite (AT) is 24 mV and on the other hand, the zeta potential value of the HTMAB-AT is +44 mV. It can be seen that the overall increase of about 60 mV. Increasing the (+) potential value indicates that the surface of the adsorbent had a stronger positive charge, so adsorption for the anion metal was increased. The isotherm data was well described by Langmuir and Temkin isotherm model. The maximum adsorption capacity was found to be 7.81 and 6.89 mg/g for As and Se ions from the Langmuir isotherm model at 298 K, respectively. The kinetic data was tested using pseudo first and pseudo second order models. The results indicated that adsorption fitted well with the pseudo second order kinetic model. The mechanism of the adsorption process showed that adsorption was dependent on intra particle diffusion model according to two step diffusion. The thermodynamic parameters(ΔGo, ΔHo, and ΔSo) were also determined using the equilibrium constant value obtained at different temperatures. The thermodynamic parameters indicated that the adsorption process was physisorption, and also an endothermic and spontaneous process.

이 연구는 다문화수용성을 신장시키기 위해 전래동화 기반 다문화교육 프로그램을 개발하는데 그 목적이 있다. 다문화수용성의 차원과 2015 개정 교육과정의 핵심역량을 바탕으로 세계 여러 나라의 전래동화를 선정하여 총 12차시의 교육 프로그램을 개발하였다. 우리나라 체류외국인과 결혼이민자 수를 고려하여 한국, 중국, 일본, 베트남, 태국 각 나라별로 이야기의 구조, 주제, 교훈 등이 유사하며 문화적 특성이 잘 나타나 있는 각 나라의 대표 전래동화를 선정하였으며, 다문화수용성의 세 가지 차원인 다양성, 관계성, 보편성과 2015개정 교육과정의 핵심역량 중 다문화적 요소인 심미적 감성 역량과 공동체 역량에 중점을 두어 개발하였다. 프로그램은 ‘인식-내면화-행동’의 3단계로, 활동주제는 각 단계에 맞춰 ‘세계 전래동화 비교, 분석을 통해 문화의 보편성과 특수성 찾기’, ‘다양한 활동을 통해 타인의 감정 이해하고 공감하기’, ‘차별에 대해 적극적으로 대처할 수 있는 능력 기르기’로 구성하였다. 개발된 프로그램을 서울특별시 성동구 소재의 E초등학교 6학년 1개 학급을 대상으로 적용하였을 때, 실험집단이 비교집단에 비해 다문화수용성 지수가 유의미하게 증가하였고(p<.05), 실험집단의 다문화수용성 사후검사 평균은 사전검사에 비해 유의한 차이가 있었다(p<.001). 활동지와 소감문 등의 자료를 분석하여 질적 효과성 평가도 병행한 결과, 다문화 가족에 대한 인식의 변화, 타인의 감정 이해, 차별에 대한 반성과 다짐, 행동 변화와 실천의지 등을 확인할 수 있었고 학생 스스로도 자신의 인식이 개선되었음을 느끼며 반성과 다짐 등을 통해 공언하는 모습을 보였다. 본 연구는 세계 전래동화를 활용하여 교육현장에서 활용할 수 있는 다문화수용성 제고 교육 자료를 제공했다는 것에 큰 의미가 있으며, 향후 다양한 세계 전래동화를 활용하여 학교현장에서 체계적인 다문화교육이 가능함을 시사한다.

본 연구에서는 유한 요소 해석을 바탕으로 연약 지반의 콘크리트 직사각형 피라미드 기초의 접지 하중과 접지 면적을 고려하여 불충분 한 설계 능력을 보완하고 하중에 의한 침하의 영향을 연구하였다. 이 연구의 결과로, 사각 피라미드 기초가 일반 기초보다 18% 더 효과적이라는 결과가 나왔는데, 이는 압밀침하에 체적의 변화에 따라 밀접한 관계를 가지고 있으며 과잉간극수압이 소산 하는 시간에 비해 비교적 짧은 시간에 일어나는 하중의 변화로 발생한 것으로 해석되었다. 해석 시 지층의 경계조건에 따라 압밀층은 상단과 하단 중간에 이루어져 있고, 압밀이 진행 되는 시간에 비해 짧은 시간에 하중이 가해져 하중이 완전히 작용하기 전에는 압밀이 전혀 발생하지 않는 것으로 해석되었다.

This study carried out first a component survey on the domestic waste shipped into a waste disposal facility in B city, and then heavy metal analysis of each component according to the SRF standards. Based on this, this study explored the problems with domestic waste and measures to improve them. The results are as follows. The result of the survey of physical components show that paper accounted for the largest proportion with 20.5 %~59.9 %, metals (including batteries) among incombustibles accounted for 0.0~8.3 %, other inorganic substances, glass and ceramics accounted for 0.0~43.7 % and 0.0 %~19.6 % respectively. However, the proportion of coated viny and plastics, which have high lead and cadmium content, was rather high with 2.9 %~30.9 %. This suggests the possibility that actual concentration of lead and cadmium within SRF is likely to be higher. Among the 15 components contained in the waste brought into the waste disposal facility, 10 components (food waste, textiles, vinyl, plastics, wood, rubber and leather, paper, metals, electronic substrates, and nail polish) were analyzed according to assay samples (approximately 0.1 g and 0.3 g). The result of analysis shows that the amount of Cd and Pb detected in coated vinyl for 0.109 g of assay sample was 98.6 mg/kg and 20.6 mg/kg respectively; 117.0 mg/kg and 29.0 mg/kg respectively for 0.313 g of assay sample. This is high contents exceeding the Cd standard. As for wooden component, the amount of Pb was 480.0 mg/kg for 0.3 g of assay sample. This suggests that there always exists the possibility of exceeding the exposure level of heavy metals (Cd and Pb) in SRF as long as coated wood and vinyl·plastics with high contents of Pb and Cd are shipped into the waste disposal facility; and the local government and the residents need to work hard to improve the situation including development of the machine to sort electronic substrates and batteries for separate collection of the waste of coated vinyl and plastics within domestic waste.

A new Gentiana spp. cultivar ‘Skyhope’ was bred by crossing between ‘Jinbu-4 line’ with violet blue (VB 95B) colored petals and ‘Jinbu-1 line’ with violet blue (VB 93B) petals in 2000 year. The superior line of ‘0013-9’ was selected in Daegwallyeong from 2001 to 2003 year, and growth and flower characterization were conducted from 2004 to 2007 year in field of Daegwallyeong and Jinbu of Pyeongchang, Gangwon-do, Namwon, Jeollabuk-do and Jeju Special Self-Governing-do. The flower showed violet blue (VB 96A) color at opening, the petal of flower have not spot and flower stem color was purple. Flowers was opening at the same time from bottom to upside. Plant height was 68.1 cm, and number of flower stems per plant was 5.3 ea., number of flower node per stem is 5.9 ea., and Number of flowers per stem was 32.2 ea.. The flowering of ‘Skyhope’ cultivar was bloomed from the middle of July in Daegwallyeong and the later of July in Jinbu, Pyeongchang, Kangwon-do and the early of July in Namwon, Jeollabuk-do and the later of July in Jeju Special Self-Governing-do. ‘Skyhope’ cultivar can be used for cut flower.

본 연구는 정기선 해운기업의 고객관계관리의 실제적인 내용을 살펴보고, 이러한 고객관계관리를 촉진시키는 조직의 전반적인 특성들을 고찰하여 조직특성과 고객관계관리와의 관계를 분석하고, 고객관계관리가 조직성과에 미치는 영향에 대하여 실증분석을 실시하였다. 분석결과, 정기선 해운기업의 고객관계관리에 영향을 미치는 조직특성은 시장지향성과 최고경영자의 지원으로 확인되었으며, 고객관계관리는 종업원만족도, 서비스경쟁력 향상, 재무적 성과, 그리고 고객만족도와 재구매의도에 유의한 영향을 미치는 것으로 확인되었다. 본 연구는 정기선 해운기업의 고객관계관리를 전사적 차원에서 조직문화와 관리체계 등의 조직특성들과 연계되어 시행되어야 한다는 것을 제시하였으며, 이러한 조직특성들을 바탕으로 한 고객관계관리 전략이 정기선 해운기업의 조직성과와 고객차원의 만족도 및 재구매의도의 전반적인 경영성과에 영향을 미치게 된다는 것을 실증함으로써, 정기선 해운기업의 고객관계관리를 해운기업 및 고객 관점에서 종합적으로 조사 분석하였다는데 연구의 의의가 있다고 하겠다.

본 연구의 목적은 과업집중 분석법을 통한 우수 초등영어 수업의 관찰 및 분석을 통하여 효과적 인 과업조건을 파악하는데 있다. 수업 관찰 대상은 초등학교 6학년 과업 중심 수업으로 과업 중 활동을 연습(practice), 발표(presentation)와 퀴즈(quiz)의 세 단계로 나누어 과업집중도를 도출하 였다. 또한 과업조건 유형은 정보의 흐름에 따른 단방향 과업과 양방향 과업의 분류 및 과업결과 일치여부에 따른 수렴 과업과 발산 과업의 분류에 따라 과업집중도를 산출하였다. 분석 결과, 본 수업에서의 과업집중도는 비과업집중도에 비해 매우 높은 것으로 나타났다. 과업의 단계에서는 교 사 중심적 활동보다 학생 주도적 활동에서 과업집중도가 소폭 상승하였다. 과업조건별 과업집중도 에서는 단방향 과업에 집중한 비율이(43.58%) 양방향 과업에 집중한 비율(56.42%) 보다 낮았으며, 수렴 과업에 집중한 비율(69.73%)은 발산 과업에 집중한 비율(30.27%) 보다 높게 도출되었다. 언 어 기능별 과업집중도는 듣기(48.43%)가 가장 높았으며, 읽기(19.13%), 쓰기(18.28%)와 말하기 (14.16%)의 순서로 나타났다. 본 수업의 분석 결과를 바탕으로 우수한 초등영어 수업의 과업 양상 을 파악하고 추후 효과적인 과업조건을 구성하기 위한 지표로 활용할 수 있을 것이다.

Global climate change caused by industrialization has caused abnormal weather conditions such as urban temperatures and tropical nights, urban heat waves, heat waves, and heavy rains. Therefore, the study tried to analyze climate conditions and weather conditions in the streets and analyze climate factors and meteorological factors that lead to inconvenience to citizens. In the case of trees, the overall temperature, surface temperature, solar irradiance, and net radiation were measured low, and the temperature was lower in the Pedestrian road than in roads. The dry bulb temperature, the black bulb temperature, and the wet bulb temperature for the thermal evaluation showed the same tendency. In the case of thermal evaluation, there was a similar tendency to temperature in WBGT, MRT, and UTCI, and varied differences between types. Although the correlation between the meteorological environment and the thermal environment showed a statistically significant significance, the difference between the measured items was not significant. The study found that the trees were generally pleasant to weather and thermal climate in the form of trees, and the differences were mostly documented.

The present study was conducted to investigate the developmental characteristics of Propylea japonica Thunberg (Coleoptera : Coccinellidae), a predator of aphids under laboratory conditions. The development times of the egg and immature stages of Propylea japonica were investigated at ten constant temperatures(15, 17.5, 20, 22.5, 25, 27.5, 30, 32.5, 35 and 38±1℃; 14L:10D; 60±5% RH). Development time was longest at 17.5℃. The developmental periods of P. japonica from the time of egg oviposited to adult emergence was 36.9 days at 17.5℃, and it decreased ash temperature increasing. Threshold temperature of development and degree days of the P. japonica from egg to adult were 11.9℃ and 196.0 respectively. The Briere 2 and Lactin 2 modes were best fitted for all development stages. The distribution of completion of each development stage was explain relatively well that 2-parameter, 3-parameter and Logistic model except egg and pupal stage.

The JK-1 isolate which was the best producer of indole-3-acetic acid and carotenoid among the 388 strains isolated from 28 wetlands in Jeju, was identified to be Rhodopseudomonas palustirs belongs to a typical group of non sulfur purple bacteria based on 16S sRNA sequencing. This study investigated the effect of different cultural conditions of pH, temperature, agitation, light and aeration on growth, IAA and carotenoid production of photosynthetic bacterium JK-1 for optimization of IAA and carotenoid production. It was found that growth, IAA, carotenoid, and bacteriochlorophyll production with light (3,000~3,500 Lux) and agitation (100 rpm) showed better results than those with dark/static or dark/ agitation (100 rpm) in anaerobic conditions. The optimal pH, temperature and agitation speed for cell growth were 7, 30℃, 150 rpm, for IAA production were 9, 30℃, 150rpm and for carotenoid production were 6, 25℃, 50 rpm, cultured for 72 h under anaerobic light, respectively. The growth and IAA production were high in aerobic culture compared with anaerocic culture, whereas carotenoid and bacteriochlorophyll content were decreased extremely in aerobic condition (0.5~1 vvm). Subsequently, the optimal culture conditions for JK-1 were selected with pH 7, 30℃ and 100 rpm under anaerobic light and the effect on plant growth was tested by pot assay. Inoculation of JK-1 with 3% (v/v) level caused increase in shoot and root dry weigh that varied from 20%~58% to 40%~28% in young radish in camparison to uninoculated treatment at 50 days of growth. The study suggests that the JK-1 isolate may serve as efficient biofertilizer inoculants to promote plant growth.

This study was conducted to investigate the feasibility of nutrient recovery and reuse from centrate, which was produced by the centrifugal dewatering of anaerobic digested sludge. A continuous stirred reactor was operated for 3 months to recover phosphorous and nitrogen as magnesium ammonium phosphate (MAP) crystals from the centrate. More than 95% of phosphate could be recovered from the centrate into the crystalline materials. The contents of TP and TN in the crystalline materials were 28.1% and 5.17%, respectively. Some heavy metals were identified, but remained under Korean standards for organic fertilizer. On the other hand, X ray diffraction analysis clearly showed that the crystalline materials was MAP crystals. However, chemical analyses suggested that some undesirable crystals like magnesium potassium phosphate or hydroxyapatite might be formed during the MAP crystallization. Nevertheless, both results strongly confirmed that the MAP crystals could be a useful and valuable nutrient fertilizer, which slowly and continuously releases essential nutrients in response to the demand from farming and planting.

‘Daname’ is a foxtail millet(Setaria italica Beauv.) variety developed and registered by Department of Southern Area Crop Science, NICS, RDA in 2014. This variety which collected from IT252182 was developed through pure line selection. ‘Daname’ is a early-maturing variety having 100 days of growth period from seeding to harvesting in Milyang of Korea. The culm length is about 97 cm which is 20cm shorter culm length than standard variety ‘Hwanggeumjo’, and it showed tolerant to lodging in field. The panicle shape is a cylindrical and the length is about 19cm. According to the grain, seed color and dehusked grain colors are orange and yellow and endosperm characteristic is non-glutinous. The yield performance of this variety was about 3.81 t ha-1 in local adaptability test from 2013 to 2014 and it showed similar with standard variety ‘Hwanggeumjo’. As the addition amount of ‘Daname’ in rice increased from 0% to 30% and 100%, the antioxidant ability of ‘Daname’ added rice and hardness/stickiness balances were increased. But we could not find out the difference of hardness/stickiness balances between 0%and 10% addition. So, 10% addition amount was concluded to increase antioxidant ability regardless eating quality of cooked rice. (Variety registration No. 6243)