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Nano Research 2022年第2期15卷 1524-1531页

作者： Hyeonwoo Shin Sang-Joon Park Byeong-cheol kang Tae-Jun Ha Department of Electrical Engineering and Computer Science Inter-university Semiconductor Research CenterSeoul National UniversitySeoul 08826Korea Department of Electronic Materials Engineering Kwangwoon UniversitySeoul 01897Korea

Understanding charge transport mechanisms in thin-film transistors based on random networks of single-wall carbon nanotubes(SWCNT-TFTs)is essential for further advances to improve the potential for various nanoelectronic ***,a comprehensive investigation of the two-dimensional(2D)charge transport mechanism in SWCNT-TFTs is reported by analyzing the temperature-dependent electrical characteristics determined from the direct-current and non-quasi-static transient measurements at 80-300 *** elucidate the time-domain charge transport characteristics of the random networks in the SWCNTs,an empirical equation was derived from a theoretical trapping model,and a carrier velocity distribution was determined from the differentiation of the transient ***,charge trapping and de-trapping in shallow-and deep-traps in SWCNT-TFTs were analyzed by investigating charge transport based on their trapping/de-trapping *** comprehensive analysis of this study provides fundamental insights into the 2D charge transport mechanism in TFTs based on random networks of nanomaterial channels.

关键词： single-wall carbon nanotube random networks two-dimensional(2D)charge transport time-domain transient measurements charge trapping/de-trapping shallow-/deep-traps

Inhibitory effect of sulfated polysaccharide from Sargassum thunbergii in PA-induced lipid accumulation in vitro

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Food Bioscience 2023年第1期51卷 308-315页

作者： Hyo-Geun Lee Min-cheol kang You-Jin Jeon Young-Sang Kim Department of Marine Life Sciences Jeju National UniversityJeju63243Republic of Korea Marine Science Institute Jeju National UniversityJeju Self-Governing Province63333Republic of Korea Research Group of Food Processing Korea Food Research Institute245Nongsaengmyeong-roIseo-myeonWanju55365Republic of Korea

This study aimed to investigate the In vitro lipid inhibitory effects of sulfated polysaccharide fractions derived from fractional ethanol precipitate 1 of Celluclast assisted hydrolysate from Sargassum thunbergii(STCF1-PSs).Three polysaccharide fractions were obtained,and physical characteristics were determined by SEM,FTIR,and MALS *** analysis indicated that STCF1-PS3 contained high fucose and galactose *** intracellular lipid inhibitory effects of STCF1-PS3 were evaluated on PA-treated 3T3-L1 and HepG2 cells and was found to be ***,it suppressed intracellular triglyceride and free fatty acid levels in these *** blot analysis showed that the lipid inhibitory activity was achieved through the regulation of the adipogenesis and lipolysis pathway in PA-treated 3T3-L1 cells and the free fatty acid oxidation pathway in PAtreated HepG2 ***,sulfated polysaccharide from Sargassum thunbergii has a beneficial effect on intracellular lipid metabolism and it could be used as a functional ingredient in functional food industry.

关键词： Sargassum thunbergii Sulfated polysaccharides Adipogenesis Lipolysis Fatty acid oxidation

Highly flexible and transparent conducting silver nanowire/ZnO composite film for organic solar cells

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Nano Research 2014年第9期7卷 1370-1379页

作者： Myungkwan Song Jong Hyun Park Chang Su Kim Dong-Ho Kim Yong-cheol kang Sung-Ho Jin Won-Yong Jin Jae-Wook kang Surface Technology Division Korea Institute of Materials Science Changwon 641-831 Republic of Korea OLED Development Group LG Display Co. Ltd. Gyeonggi-do 413-811 Republic of Korea Department of Chemistry Pukyong National University 45 Yongso-ro Nam-Gu Busan 608-737 Republic of Korea Department of Chemistry Education Graduate Department of Chemical Materials and Institute for Plastic Information and Energy Materials Pusan National University Busan 609-735 Republic of Korea The Graduate School of Flexible and Printable Electronics Polymer Materials Fusion Research Center Chonbuk National University Jeonju 561-756 Republic of Korea

High efficiency and flexible inverted organic solar cells have been fabricated using solution-processed silver nanowire/zinc oxide composite transparent electrodes. The transparent electrodes showed a low sheet resistance of -13 ff）.sq-1 and high transmittance of -93% as well as superior mechanical flexibility. Power conversion efficiencies of -7.57% and -7.21% were achieved for devices fabricated on glass and plastic substrate, respectively. Moreover, the flexible devices did not show any degradation in their performance even after being folded with a radius of-480 μm.

关键词： silver nanowire flexible transparent conductingelectrode inverted organic solar cell

Protective effects of edible insect protein extracts from Protaetia brevitarsis against H_(2)O_(2)-induced oxidative stress in mouse C2C12 myoblast cells

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Food Bioscience 2023年第2期52卷 435-443页

作者： Jae Hoon Lee Tae-Kyung Kim Min-cheol kang Bum-Keun Kim Yun-Sang Choi Research Group of Food Processing Korea Food Research InstituteWanju55365Republic of Korea

Edible insects have been attracting significant attention not only for their nutritional superiority but also for their excellent bio-functional *** this study,the apoptotic protective effects of water-soluble protein(WPB)and salt-soluble protein(SPB)extracts derived from Protaetia brevitarsis against hydrogen peroxide(H_(2)O_(2))-induced oxidative stress in C2C12 cells were *** and SPB were confirmed to exhibit radical scavenging and ferric-ion reducing *** addition,WPB and SPB treatments effectively restored the decreased cell viability of the C2C12 cells induced by H2O2 treatment,and showcased protective effects against apoptosis and mitochondrial dysfunction by regulating the expressions of pro-and anti-apoptotic ***,our data indicated that protein extracts from Protaetia brevitarsis could be beneficial for the prevention and treatment of diseases associated with apoptosis induced by oxidative stress.

关键词： Edible insect protein extract Protaetia brevitarsis Antioxidant Anti-Apoptosis C2C12 myoblast cells

Effects of edible insect extracts on the antioxidant, physiochemical, and microbial properties of Tteokgalbi during refrigerated storage

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Food Bioscience 2023年第2期52卷 326-333页

作者： Hae In Yong Tae-Kyung Kim Ji Yoon Cha Jae Hoon Lee Min-cheol kang Samooel Jung Yun-Sang Choi Research Group of Food Processing Korea Food Research InstituteWanju55365Republic of Korea Division of Animal and Dairy Science Chungnam National UniversityDaejeon34134Republic of Korea

In this study,Tteokgalbi,a meat product,was prepared with edible insect larvae extracts and its antioxidant,physiochemical,and microbial properties were evaluated during refrigerated *** prepared with 2%*** and 2%*** showed the highest radical-scavenging activity and metal-chelating activity,but the lowest thiobarbituric acid reactive substance(TBARS)value,among the treatments(P<0.05).In addition,those antioxidant activities were the lowest and the TBARS value was the highest in control Tteokgalbi(P<0.05)during all storage *** prepared with 2%*** showed the highest brownness index,pH,and cooking yield,but the lowest shear force value(P<0.05).During all storage days,the total aerobic bacteria level did not differ significantly among the *** conclusion,*** extracts(2%)were effective as antioxidants,inhibiting lipid oxidation,and improving the quality properties of Tteokgalbi,without negatively affecting microbial *** results confirmed that the edible insect extracts have industrial value as a food additive.

关键词： Edible insect Lipid oxidation Natural antioxidant Refrigerated storage Tteokgalbi

Effects of low molecular weight polysaccharide from Sargassum thunbergii against palmitic acid-induced intracellular lipid accumulation in 3T3-L1 adipocyte and HepG2 cells

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Food Science and Human Wellness 2024年第4期13卷 2244-2252页

作者： Hyo-Geun Lee D.P.Nagahawatta M.J.M.S.Kurera Kyung-Mo Song Yun-Sang Choi You-Jin Jeon Min-cheol kang Department of Marine Life Sciences Jeju National UniversityJeju 63243Republic of Korea Department of Biotechnology Faculty of Agriculture and Plantation ManagementWayamba University of Sri LankaMakanduraGonawila(NWP)60170Sri Lanka Research Group of Food Processing Korea Food Research Institute245Wanju 55365Republic of Korea

Low molecular weight polysaccharides can be isolated from Sargassum thunbergii(LMPST)and in vitro experiments were conducted to evaluate the inhibitory effects on *** natures of LMPST were attained from *** and appraised their LMPST on palmitic acid(PA)induced lipid accretion in Hep G2,and 3T3-L1 *** treatment lessened lipid deposition and intracellular free fatty acid and triglyceride intensities in PA-treated above mentioned *** mechanistic study publicized that LMPST2 significantly suppressed adipogenesis and stimulated the PA-treated 3T3-L1 cells occupied in the lipolysis ***,in PA-treated Hep G2 cells,the free fatty acid oxidation was significantly increased by *** these constructive properties of LMPST2 from ***,is a potential candidate for diminishing the intracellular lipids,and for a therapeutic agent in those conditions.

关键词： Sargassum thunbergii Low molecular weight polysaccharide Lipid accumulation Obesity Liver steatosis

Anti-angiogenic effects of the water extract of HangAmDan(WEHAD),a Korean traditional medicine

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Science China(Life Sciences) 2011年第3期54卷 248-254页

作者： BANG Ji-Young KIM Kyung-Soon KIM Eung-Yoon YOO Hwa-Seung LEE Yeon-Weol CHO Chong-Kwan CHOI YoungJin JEONG Hyun-Ja kang in-cheol InnoPharmasceen Inc. Hoseo UniversityAsan 336-795Republic of Korea East-West Cancer Center Dunsan Oriental Medical Hospital of Daejeon UniversityDaejeon 302-122Republic of Korea BioChip Research Center Hoseo UniversityAsan 336-795Republic of Korea Department of Biological Science College of Natural ScienceHoseo UniversityAsan 336-795Republic of Korea

We investigated the anti-angiogenic effects of the water extract of HangAmDan (WEHAD),which is a crude extract of nine Korean medicinal substances of animal and plant *** human umbilical vein endothelial cells,WEHAD significantly inhibited bFGF-induced proliferation,adhesion,migration,and capillary tube *** used an antibody array to perform an analysis of signaling proteins,which showed up-regulated expression of various proteins including RAD51,RAD52,and p73,and down-regulated expression of *** vessel formation in a chick chorioallantoic membrane (CAM) treated with WEHAD was markedly reduced in length compared with a PBS-treated control *** results suggest that inhibition of angiogenesis by WEHAD may be the mechanism of action for the anti-cancer effects of HAD.

关键词： angiogenesis HangAmDan WEHAD antibody array HUVEC

Anti-obesity effects of fucoidan from Sargassum thunbergii in adipocytes and high fat diet induced obese mice through inhibiting adipogenic specific transcription factor

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Food Science and Human Wellness 2024年第3期13卷 1608-1616页

作者： Hyo-Geun Lee H.H.A.C.K.Jayawardhana Fengqi Yang D.P.Nagahawaththa N.M.Liyanage Kyung-Mo Song Yun-Sang Choi Seung-Hong Lee You-Jin Jeon Min-cheol kang Department of Marine Life Sciences Jeju National UniversityJeju 63243Republic of Korea Marine Science Institute Jeju National UniversityJeju 63333Republic of Korea Research Group of Food Processing Korea Food Research InstituteWanju 55365Republic of Korea Department of Pharmoceutical Engineering Soonchunhyang UniversityAsan 31538Republic of Korea

The prevalence of obesity has increased and is a health concern *** to the concerns regarding synthetic anti-obesity treatments,nowadays natural products become a *** studies proved that there is a potential to use marine algae as anti-obesity ***,in this study,the lipid inhibitory effect of crude polysaccharide of amyloglucosidase-assisted hydrolysate from Sargassum thunbergii(STAC)and its fucoidan fractions(STAFs)on 3T3-L1 cells and high-fat diet(HFD)-induced obese mice were *** to the results,the STAF3,showed the highest xylose content and exhibited significant inhibitory effects on lipid accumulation by downregulating adipogenic and lipogenic proteins in 3T3-L1 ***,oral supplementation with STAC significantly declined gain in body weight and fat weight,and serum lipid contents in an HFD-induced obesity mouse *** and chemical characterizations demonstrated that puritied STAF3 has consistent surface morphology and small particle size,with similar structural characteristics as commercial ***,these results indicate that STAC and purified STAF3 from Sargassum thunbergia is a potent source to develop as ananti-obesity agents or functional food products to counter obesity.

关键词： Sargassum thunbergii Fucoidan Anti-obesity Anti-steatosis

Establishment of diagnostic reference levels in lateral cephalometric radiography for Korean pediatric patients

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Establishment of diagnostic reference levels in lateral ceph...

Optimizing GSHP Performance with ICT and RETScreen Plus

The 9th Asian Congress of Oral and Maxillofacial Radiology

作者： Jae-Seo Lee Suk-Ja Yoon Byung-cheol kang Department of Oral and Maxillofacial Radiology Dental Science Research InstituteSchool of DentistryChonnam National University

＜正＞Aims:Pediatric patients are more radiosensitive than ***,evaluation of radiation dose during pediatric radiologic examination is especially *** are no available national diagnostic reference levels（DRLs） for Korean pediatric *** aim of this study was to propose the DRLs in lateral cephalometric radiography for Korean pediatric patients.

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Journal of Energy and Power Engineering 2014年第4期8卷 677-681页

作者： Euy-Joon Lee Andrew Putrayudha Eun-cheol kang Ivor Francis Da Cuha New and Renewable Energy Division Renewable Energy Department KIER (Korea Institute of Energy Research) Daejeo 305-343 Korea LeapFrog Energy Technologies Inc. Mississauga L4Y2M8 Ontario Canada

Under the RHO （renewable heat obligation）, public buildings in the Republic of Korea must achieve an 11% overall reduction to thermal energy consumption in buildings more than 10,0O0 m^2. RETScreen Plus is a freely available software tool developed by the Canadian Government which can be used to develop energy baselines of clean energy technologies. Using curve-fitting and statistical methods like CUSUM, the software can combine actual energy performance with near real time weather information from NASA. We developed a method to simulate the performance of a GSHP （ground source heat pump）. The three distinct energy zones involve heating, no-energy, and cooling. RETScreen Plus methodology is used to develop curve fits for each distinct zone as it builds a correlation with NASA satellite data. The model then factors the impact of ICT （information and control technologies） as a means to improve and lower the building＇s energy consumption. Two values of COP （coefficient of performance） are used--the first is a standard ICT COP, while the second is an improved ICT COP with a smart controller. This methodology can then be expanded to incorporate current and future smart meter technologies, time of use rates, energy price signals, demand response and electricity storage options. In summary, this methodology enables a building owner or energy conservation official to quickly and accurately determine the baseline energy for a building and the potential impacts of smart ICT technologies, especially for buildings equipped with GSHP technologies.

关键词： RETScreen energy modeling GSHP ICT hybrid optimization methodology.