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Blended Grain Extracts Ameliorate Hyperglycemia in Streptozotocin-Nicotinamide Induced Diabetic Rats
Yun Sun Yang,Eun Woo Jeong,Damin Yun,Gi Su Han,Hyun Joo Kim,Hyeon Gyu Lee 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10
The anti-diabetic effects of blended grain ethanol extracts (BGE) were evaluated in streptozotocin-nicotinamide (STZ-NA) induced diabetic rats. The two types of BGE were prepared by mixing oat, sorghum, adzuki bean, finger millet, or proso millet in different ratios (BGE-1 and BGE-2). A group of normal and four groups of diabetic rats were administered with saline (DM), 200 mg/kg of metformin (MET), 500 mg/kg of BGE-1, and 500 mg/kg of BGE-2. After six weeks of administration, the fasting blood glucose level (FBG) and the area under curve of oral glucose tolerance test significantly (p<0.05) decreased in MET, BGE-1, and BGE-2 compared with DM. In particular, the FBG in BGE-2 was significantly (p<0.05) lower than BGE-1. Total cholesterol level in BGE-1 and triglyceride and alanine transaminase levels in BGE-1 and BGE-2 significantly (p<0.05) decreased compared with DM. In addition, BGE-1 and BGE-2 ameliorated pathological changes and increased insulin immunoreactivities in pancreatic β-cells. Thus, both BGE-1 and BGE-2 may exhibit anti-hyperglycemic effects, and BGE-2 especially may be more effective than BGE-1 in lowering FBG in STZ-NA induced diabetic rats.
Lee, Damin,Xia, Qi Xun,Mane, Rajaram S.,Yun, Je Moon,Kim, Kwang Ho ELSEVIER SCIENCE 2017 JOURNAL OF ALLOYS AND COMPOUNDS Vol.722 No.-
<P><B>Abstract</B></P> <P>Mesoporous nickel and cobalt hydroxide composites are directly grown onto 3D macro-porous Ni foam as a binder-free electrode for supercapacitors by using the successive ionic layer adsorption and reaction (SILAR) method. This method is the cheapest and simplest among several deposition processes for supercapacitor applications. An as-obtained porous NiCo(OH)<SUB>2</SUB> electrode exhibits a remarkable specific capacity (1113.6 mAh g<SUP>−1</SUP> at a current density of 3 A g<SUP>−1</SUP>) and excellent cycling stability (85.62% capacity retention after 5000 cycles). Furthermore, an asymmetric supercapacitor assembled with NiCo(OH)<SUB>2</SUB> as a positive electrode and graphene as a negative electrode shows a high energy density of 20.07 W h kg<SUP>−1</SUP> at a power density of 2302.73 W kg<SUP>−1</SUP> and excellent cycling stability (76.46% retention after 5000 cycles). As a result, it shows that the NiCo(OH)<SUB>2</SUB> fabricated by the SILAR method can be a promising electrode towards energy-storage devices with high energy and power densities.</P> <P><B>Highlights</B></P> <P> <UL> <LI> SILAR method is a process conducted under mild conditions for 30 s. </LI> <LI> NiCo(OH)<SUB>2</SUB> composite by SILAR method is a 3D flower-like porous nanostructure. </LI> <LI> The synthesized NiCo(OH)<SUB>2</SUB> electrode shows high electrochemical performances. </LI> <LI> The specific capacity of the NiCo(OH)<SUB>2</SUB> electrode is 1113.6 mAh g<SUP>−1</SUP> at 3 A g<SUP>−1</SUP>. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
서해림(Hyelim Seo),박소정(Sojeong Bak),윤다민(Damin Yun),유주희(Juhee Yu),정석희(Sokhee P. Jung) 대한환경공학회 2024 대한환경공학회지 Vol.46 No.7
해상풍력발전은 친환경적이고 지속 가능한 에너지원으로 인정받고 있으며, 높은 에너지 안정성과 잠재력, 경제적 이점 등으로 덴마크, 중국, 독일, 유럽 등 많은 국가에서 정부 차원의 지원으로 빠르게 발전하고 있다. 우리나라는 재생에너지 3020 이행계획을 통해 풍력발전으로 17.7GW의 목표를 설정하였고 해상풍력 발전 방안을 통해 2030년까지 12GW의 해상풍력을 보급할 예정이다. 하지만 한국은 주민 수용성 부족, 낮은 사업성, 복잡한 인허가 과정, 공급망 부족 등 다양한 장애요인으로 인해 해외에 비해 발전이 더딘 상황이다. 본 연구에서는 국내 해상 풍력발전사업이 더딘 성장을 보이고 있는 근본적인 원인을 밝히고, 국내 해상풍력이 나아갈 방안에 대해 해상풍력발전의 선두에 있는 해외 사례와의 비교를 통해 다음과 같이 제시하였다. 1) 주민 수용성 문제를 해결하기 위해 해상풍력발전 사업의 가치와 이익을 명확히 설명하고, 주민들과의 긍정적인 소통을 강화해야 한다. 2) 정부 주도적인 인센티브 제도와 지원책의 마련을 통해 낮은 사업성 문제를 해결해야 한다. 3) 인허가 절차를 일원화하여 인허가 과정에서의 문제를 해결하고, 사업의 지연과 취소를 방지해야 한다. 4) 공급망 부족 문제 해결을 위해 국내 시장 규모를 확대하고, 전력의 효율적인 연계가 필요하다. Offshore wind power generation is recognized as an environmentally friendly and sustainable energy source, rapidly advancing with governmental support in many countries such as Denmark, China, Germany, and across Europe due to its high energy stability, potential, and economic benefits. South Korea has set a target of 17.7GW for wind power generation through its Renewable Energy 3020 Implementation Plan, aiming to supply 12GW of offshore wind power by 2030. However, Korea faces slower development compared to overseas counterparts due to various obstacles including lack of community acceptance, low business feasibility, complex approval processes, and insufficient supply chain. This study identifies fundamental reasons behind Koreas sluggish growth in offshore wind power generation and proposes the following solutions through comparison with leading international cases. 1) Strengthening positive communication with residents by clearly articulating the value and benefits of offshore wind power projects to address community acceptance issues. 2) Resolving low business feasibility issues through the establishment of government-led incentive programs and support measures. 3) Streamlining approval processes to mitigate delays and cancellations in project implementation. 4) Expanding domestic market size and enhancing efficient power interconnection to address supply chain deficiencies.