• International Journal of Advanced Culture Technology
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• 제7권1호
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• pp.143-149
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• 2019

The purpose of the study was to examine early childhood teachers' content knowledge on green growth education. The subjects, 45 early childhood teachers, were asked to draw concept maps about early childhood green growth education. Their concept maps were analyzed in terms of superordinate and subordinate concepts by contents and frequencies. The results showed that early childhood teachers used 182 superordinate and 1,292 subordinate concepts in the concept map of green growth education for young children. Although early childhood teachers had a wealth of content knowledge on green growth education as proposed by the Ministry of Education, their knowledge was disproportionate to some areas and sub-areas of green growth education. These results implied the needs of developing teacher education programs for early childhood green growth education.

• Journal of Preventive Medicine and Public Health
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• 제43권4호
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• pp.366-367
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• 2010

Green tea is a popular beverage and its health benefits are well known. However, inconsistent results have been reported in observational studies concerning the association between green tea consumption and the lung cancer risk. In this commentary, several methodological issues underlying the measurement of tea exposure are highlighted. The recommendations should be useful for designing and planning prospective cohort studies to ascertain the protective effect of green tea against lung cancer.

• 한국건설관리학회논문집
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• 제15권6호
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• pp.16-25
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• 2014

최근 국가정책 아젠다인 '저탄소 녹색성장'은 국가의 중요한 비젼으로 전정부차원의 노력이 이루어지고 있다. 정부는 2020년까지 세계 7대, 2050년까지 세계 5대 녹색강국으로 진입을 목표로 하고 있다. 이러한 목표를 실현시키기 위해 효율적 온실가스 감축 및 녹색국토, 교통의 조성이 중요한 시책으로 추진되고 있다. 건설산업 부문도 예외가 아니어서 에너지 및 온실가스 배출저감을 위한 정책 및 기술개발이 활발히 이루어지고 있다. 해외 선진국의 경우 가장 광범위한 대상인 도로시설물에 대한 녹색도 측정을 위한 연구가 수행되었으며 그것을 기반으로 녹색도로인증제가 적용되고 있다. 본 논문은 선진국 제도 및 사례를 벤치마킹하고 국내 도로부문에 있어 적용성을 검증하여 녹색도로인증제도의 성공적인 국내 도입에 일조 하고자 한다.

• 대한가정학회지
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• 제48권9호
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• pp.89-102
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• 2010

The purpose of this research was to elucidate the relevance of the area of home economics in practical arts (technology & home economics) curriculum to green growth education, finding applicable cases of green growth education content in the field of home economics education. Given this base, we performed a survey with people who majored in home economics education and elementary school teachers on how green growth education related to their education. We studied applied cases and performed a survey by open-ended questions that extracts the green growth education content. In synthesizing the results of these studies so far, we have concluded that home economics education is much related to green growth education, and that with a change of people's conceptions when relating school life to household life, home economics can be a very useful subject that can lead to the practice of the green growth education.

• Korean Chemical Engineering Research
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• 제49권6호
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• pp.726-731
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• 2011

F-T 반응이 공업적으로 활용되기 위해서는 촉매의 대량 합성 및 성형체의 기계적 강도가 매우 중요한 변수로 적용될 수 있다. 따라서 본 논문에서는 F-T 합성반응용 촉매로 잘 알려진 Fe 계열 촉매의 성형체 제조를 위한 바인더의 영향을 알아보기 위한 연구를 수행하였다. 촉매 바인더로는 무기바인더와 유기바인더를 사용하여 촉매 성형체를 제조하였다. 무기바인더 및 유기바인더의 종류와 함량에 따른 성형촉매의 물리화학적 특성을 XRD, BET, PSD, TPR, UTM으로 분석하였으며, F-T 합성 반응성에 대한 영향을 관찰함으로써 최적의 성형 촉매 제조 조성을 확립할 수 있었다.

• 상하수도학회지
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• 제32권4호
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• pp.301-307
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• 2018

Membrane distillation (MD) is a thermally driven desalination process with a hydrophobic membrane. MD process has been known to have a lower fouling potential compared to other pressure-based membrane desalination process (NF, RO). However, membrane fouling also occurs in MD process. In this study, the membrane fouling was observed in MD process according to the pre-treatment processes. The filtration and precipitation processes were applied as the pre-treatment to prevent the membrane fouling. The pore sizes of roughing filters were 0.4, 5, 10, 30, and $60{\mu}m$. The concentration of the coagulant was 1.2 mg/L as $FeCl_3$. The membrane fouling on MD membrane was successfully removed with both pre-treatment processes.

• 한국전기전자재료학회논문지
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• 제35권3호
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• pp.292-296
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• 2022

(La_0.5Nd_0.2Sr_0.3)MnO₃ specimens were prepared by a solid-state reaction. In all specimens, X-ray diffraction patterns of an orthorhombic structure were shown. The fracture surfaces of (La_0.5Nd_0.2Sr_0.3)MnO₃ specimens showed a transgranular fracture pattern be possibly due to La ions (0.122 nm) as a perovskite A-site dopant substituting for Nd ions (0.115 nm) having a small ionic radius. The full-width at half maximum (FWHM) of the Mn 2p XPS spectra showed a value greater than that [8] of the single valence state, which is believed to be due to the overlapping of Mn²⁺, Mn³⁺, and Mn⁴⁺ ions. The dependence of Mn 2p spectra on the Mn³⁺/Mn⁴⁺ ratio according to sintering time was not observed. Electrical resistivity resulted in the minimum value of 100.7 Ω-cm for the specimen sintered for 9 hours. All specimens show a typical negative temperature coefficient of resistance (NTCR) characteristics. In the 9-hour sintered specimen, TCR, activation energy, and B25/65-value were -1.24%/℃, 0.19 eV, and 2,445 K, respectively.

• 농촌지도와개발
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• 제18권4호
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• pp.961-981
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• 2011

This study selected Joongchon Village in Gimje-si as a target, in order to apply green village design regarding regional circumstances and features within the local government, in making green village as an efficient scheme in aspect of locality for 'Low Carbon, Green Growth'. Subsequently, we conducted survey and analysis. Natural circulation-based green village of Joongchon Village in Gimje-si is a low carbon green village, based upon eco-friendly cattle shed. Even though it is the fact that the initial costs of an eco-friendly cattle shed are rather high, it is the long-term low carbon green technology that can transform livestock night soils into resources, provide them to agricultural farms, independently supply energies from by-product, and produce energies additionally. Therefore, Joongchon Village in Gimje-si is the good example of green village, applying the design which actively utilizes discharged by-product from cattle shed, so natural circulation and energy production are able as an eco-friendly green technology.

• Current Photovoltaic Research
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• 제11권4호
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• pp.114-117
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• 2023

Transparent Photovoltaic (PV) modules have recently been in the spotlight because they can be applied to buildings and vehicles. However, crystalline silicon (c-Si) solar modules, which account for about 90% of the PV module market, have the disadvantage of applying transparent PV modules due to their unique opacity. Recently, a see-through type PV module using a crystalline silicon solar strap has been developed. However, there is a problem due to a decrease in aesthetics due to the metal ribbon in the center of the see-through type PV module and difficulty bonding the metal ribbon due to the low voltage output of the strap. In this study, to solve this problem, we developed a fabrication process of series connected c-Si solar strap cells using the c-Si solar cells. We succeeded in fabricating a series connected strap with a width of 2-10 mm, and we plan to manufacture an aesthetic see-through type c-Si PV module.

• 중소기업연구
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• 제39권1호
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• pp.59-87
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• 2017

최근 환경에 대한 인식이 높아지면서 그린공급사슬관리(GSCM)에 관한 관심이 증가되고 있다. GSCM에 관한 실무적 관심이 증가함에 따라 학계에서도 환경경영에 관한 학술적 연구들이 다양한 관점에서 제시되고 있다. 그런데 대부분의 연구는 주로 대기업인 모기업 중심으로 1차 협력기업과의 관계를 연구대상으로 제시하고 있다. 1차 협력사는 공급사슬채널의 중간에 위치하고 있어 환경경영에 결정적인 역할을 담당하고 있다. 본 연구는 1차 협력사를 중심으로 기업의 기업 간 장기적 관계 지향성이 그린공급사슬관리와 성과에 미치는 영향을 분석하였다. 대·중소기업 그린 파트너십과 대·중소기업 탄소파트너십 프로그램에 참여하고 있는 1차 협력기업을 대상으로 수집한 설문 조사결과를 구조방정식을 활용하여 연구모형과 가설을 검증하였다. 분석결과 첫째, 기업 간 장기적 관계지향성이 GSCM 실행 요소인 환경정보협력, 그린구매 그리고 그린제품설계를 촉진하는 요인으로 밝혀졌다. 또한 GSCM의 하위변수 간의 상호 관련성을 추가적으로 분석한 결과 환경정보 협력이 그린구매와 그린제품설계에 영향을 주는 것으로 확인되었다. 둘째, GSCM 실행 요소인 그린구매, 그린제품설계는 환경성과에 긍정적으로 영향을 미치나 환경정보협력은 환경성과에 직접적인 영향을 미치지 못하는 것으로 밝혀졌다.