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國家地理規準을 이용한 環境問題의 학습 : 地方河川을 중심으로
Kimmel, James R. 청주대학교 사회(지리)교육학과 1996 淸州地理 Vol.11 No.-
미국의 국가 지리규준의 6개의 본질적인 요소는 공간적 용어에서의 세계, 장소와 지역, 자연체계, 인문체계, 환경과 사회, 지리학의 이용 등으로서 만약 우리 학생들이 환경에 대한 광범한 문제를 이해하도록 한다면 이 요소들은 환경학습에 요구되는 총합적인 접근을 조직하는 수단을 제공하고 있다. 지방하천은 이러한 문제와 개념을 학습할 수 있는 진정한 생기있는 무대를 제공하고 있다.
Development and characterization of PET/Fish Gelatin–nanoclay composite/LDPE laminate
Bae, Ho J.,Park, Hyun J.,Darby, Duncan O.,Kimmel, Robert M.,Whiteside, William S. John Wiley Sons, Ltd. 2009 Packaging technology & science Vol.22 No.7
<P>A three-layer laminate film was developed with the following structure: polyethylene terephthalate (PET)/fish gelatin (FG)–nanoclay composite/low-density polyethylene (LDPE). The FG–nanoclay composite material functioned as the oxygen barrier layer and demonstrated comparable oxygen barrier properties when compared with a similar laminate utilizing ethylene vinyl alcohol as the barrier layer at a relative humidity (RH) of up to 50%. The introduction of nanometer-sized filler clay into the FG matrix lowered the oxygen permeability (OP) because of the tortuosity effect of the clay particles. In addition, the FG–nanoclay composite film exhibited bond strengths similar to both LDPE and PET. The hydrophilic nature of FG significantly increases OP under high (>50%) RH conditions. However, this new FG laminate film could be a possible alternative for packaging designers desiring a more sustainable packaging material for low-RH (<50%) applications. Copyright © 2009 John Wiley & Sons, Ltd.</P>
Bae, H.J.,Park, H.J.,Hong, S.I.,Byun, Y.J.,Darby, D.O.,Kimmel, R.M.,Whiteside, W.S. Academic Press, etc 2009 FOOD SCIENCE AND TECHNOLOGY -ZURICH- Vol.42 No.6
The effect of clay content, homogenization RPM, and pH on the mechanical and barrier properties of fish gelatin/nanoclay composite films was investigated. The addition of 5% nanoclay (w/w) increased the tensile strength from 30.31+/-2.37MPa to 40.71+/-3.30MPa. The 9g clay/100g gelatin film exhibited the largest improvements in oxygen and water barrier properties. Oxygen permeability decreased from 402.8x10<SUP>-6</SUP>+/-0.7x10<SUP>-6</SUP>gm/m<SUP>2</SUP>dayatm to 114.4x10<SUP>-6</SUP>+/-16.2x10<SUP>-6</SUP> gm/m<SUP>2</SUP>dayatm and the water vapor permeability decreased from 31.2x10<SUP>-3</SUP>+/-1.6x10<SUP>-3</SUP> ngm/m<SUP>2</SUP>sPa to 8.1x10<SUP>-3</SUP>+/-0.1x10<SUP>-3</SUP> ngm/m<SUP>2</SUP>sPa. The XRD and TEM observation suggested that the ultrasonication treatment (30min at 40% output) resulted in exfoliation of the silicates.
FIRE-2 simulations: physics versus numerics in galaxy formation
Hopkins, Philip F,Wetzel, Andrew,Kereš,, Duš,an,Faucher-Giguè,re, Claude-André,Quataert, Eliot,Boylan-Kolchin, Michael,Murray, Norman,Hayward, Christopher C,Garrison-Kimmel, Shea Oxford University Press 2018 MONTHLY NOTICES- ROYAL ASTRONOMICAL SOCIETY Vol.480 No.1
Lee, Yun Kyung,Sohn, Jee Hyung,Han, Ji Seul,Park, Yoon Jeong,Jeon, Yong Geun,Ji, Yul,Dalen, Knut Tomas,Sztalryd, Carole,Kimmel, Alan R.,Kim, Jae Bum American Diabetes Association 2018 Diabetes Vol.67 No.5
<P>Beige adipocytes can dissipate energy as heat. Elaborate communication between metabolism and gene expression is important in the regulation of beige adipocytes. Although lipid droplet (LD) binding proteins play important roles in adipose tissue biology, it remains unknown whether perilipin 3 (Plin3) is involved in the regulation of beige adipocyte formation and thermogenic activities. In this study, we demonstrate that Plin3 ablation stimulates beige adipocytes and thermogenic gene expression in inguinal white adipose tissue (iWAT). Compared with wild-type mice, Plin3 knockout mice were cold tolerant and displayed enhanced basal and stimulated lipolysis in iWAT, inducing peroxisome proliferator-activated receptor alpha (PPAR alpha) activation. In adipocytes, Plin3 deficiency promoted PPAR alpha target gene and uncoupling protein 1 expression and multilocular LD formation upon cold stimulus. Moreover, fibroblast growth factor 21 expression and secretion were upregulated, which was attributable to activated PPAR alpha in Plin3-deficient adipocytes. These data suggest that Plin3 acts as an intrinsic protective factor preventing futile beige adipocyte formation by limiting lipid metabolism and thermogenic gene expression.</P>