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Shrestha, Nabeen K.,Bui, Hoa Thi,Yoon, Seog Joon,Patil, Supriya A.,Bathula, Chinna,Lee, Kiyoung,Noh, Yong-Young,Han, Sung-Hwan Elsevier 2019 Journal of electroanalytical chemistry Vol.847 No.-
<P><B>Abstract</B></P> <P>This work reports a facile solution based chemical transformation of thin film of CdCO<SUB>3</SUB> cuboids into Cd-based Prussian blue analogue structured thin film with controlled redox-state by manipulating the anion exchange reaction between the solid film and the aqueous solution of K<SUB>3</SUB>[Fe(CN)<SUB>6</SUB>] at 60°C. The progress of the transformation reaction is monitored <I>via</I> electron microscopy, X-ray difractometry and X-ray photoelectron spectroscopy. Based on the scenario of the reaction progress revealed by these analysis, the CdCO<SUB>3</SUB> cuboids are first found to be transformed into the smaller cuboids of cadmium ferricyanide, which, on further reaction, are transformed into the cadmium ferrocyanide cuboids. Thus, by controlling the redox-state of the Fe-metal center on the frameworks, the electrocatalytic activity of the frameworks on oxygen reduction reaction (ORR) is studied. The electrocatalytically inert CdCO<SUB>3</SUB> cuboids after transformation to the frameworks with Fe<SUP>3+</SUP>-centers demonstrate an enhanced catalytic activity on ORR, while the Fe<SUP>2+</SUP>-centers of the frameworks are found to relegate the catalytic activity, thereby manifesting the redox-sate modulated ORR activity of the frameworks. To the best of the authors' knowledge, this is the first report of this kind on redox-state specific ORR activity.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Conversion of CdCO<SUB>3</SUB> cuboid film into Cd-HCF frameworks <I>via</I> anion exchange </LI> <LI> Controlling reaction time to achieve Fe (III)-or Fe(II)- based Cd-HCF frameworks </LI> <LI> Fe(III) based Cd-HCF frameworks demonstrate electrocatalytic activity towards ORR. </LI> <LI> Fe(II) based Cd-HCF frameworks relegate the ORR catalytic activity. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
(+) - Catechin is a Potent Inhibitor of Intestinal Absorption of Cholesterol in Rats
Sang K. Noh,Sung I. Koo,Yongzhi Jiang 한국식품영양과학회 2003 Preventive Nutrition and Food Science Vol.8 No.1
Catechins exhibit a hypocholesterolemic effect in cholesterol-fed animals. The present study was conducted to examine whether (+)-catechin influences the absorption of cholesterol in rats. Male Sprague-Dawley rats were fed ad libitum an AIN-93G diet containing soybean oil for 5 wk. Rats with lymph cannulae were infused at 3.0 mL/h for 8 h via a duodenal catheter with a lipid emulsion containing radiolabeled cholesterol with or without (+)-catechin. Lymph was collected hourly for 8 h. The enteral infusion of (+)-catechin significantly lowered the lymphatic absorption of (14)^C-cholesterol (21.1±3.6% dose/8 h) compared with controls infused with the lipid emulsion devoid of (+)-catechin (38.2±1.2% dose/8 h). The intestinal absorption of α-tocopherol (24.2±3.0% dose/8 h) also was significantly decreased by (+)-catechin infusion, relative to controls (32.2±2.2% dose/8 h). However, the lymphatic outputs of oleic acid, phospholipid were not affected by enteral (+)-catechin infusion. The results indicate that (+)-catechin has a profound inhibitory effect on the intestinal absorption of cholesterol, α-tocopherol without affecting the absorption of fat.
(+)-Catechin is a Potent Inhibitor of Intestinal Absorption of Cholesterol in Rats
Noh, Sang K.,Koo, Sung I.,Jiang, Yongzhi The Korean Society of Food Science and Nutrition 2003 Preventive Nutrition and Food Science Vol.8 No.1
Catechins exhibit a hypocholesterolemic effect in cholesterol-fed animals. The present study was conducted to examine whether (+)-catechin influences the absorption of cholesterol in rats. Male Sprague-Dawley rats were fed ad libitum an AIN-93G diet containing soybean oil for 5 wk. Rats with lymph cannulae were infused at 3.0 mL/h for 8 h via a duodenal catheter with a lipid emulsion containing radiolabeled cholesterol with or without (+)-catechin. Lymph was collected hourly for 8 h. The enteral infusion of (+)-catechin significantly lowered the lymphatic absorption of $^{14}$ C-cholesterol (21.1 $\pm$ 3.6% dose/B h) compared with controls infused with the lipid emulsion devoid of (+)-catechin (38.2 $\pm$ 1.2% dose/8 h). The intestinal absorption of $\alpha$-tocopherol (24.2$\pm$3.0% dose/8 h) also was significantly decreased by (+)-catechin infusion, relative to controls (32.2$\pm$2.2% dose/8 h). However, the lymphatic outputs of oleic acid and phospholipid were not affected by enteral (+)-catechin infusion. The results indicate that (+)-catechin has a profound inhibitory effect on the intestinal absorption of cholesterol and $\alpha$-tocopherol without affecting the absorption of fat.
Effect of structural distortion on ferrimagnetic order inLu1−xLxFe2O4(L=Yand Er;x=0.0, 0.1, and 0.5)
Noh, Han-Jin,Sung, Hojin,Jeong, Jinwon,Jeong, Jinhwan,Kim, Sung Baek,Kim, Jae-Young,Kim, J. Y.,Cho, B. K. American Physical Society 2010 Physical review. B, Condensed matter and materials Vol.82 No.2
A Production-and-Scheduling for One-Vendor Multi-Buyer Model under the Consolidation Policy
K.W. Noh(노경완),C.S. Sung(성창섭),Ik Sun Lee(이익선) 한국경영과학회 2014 經營 科學 Vol.31 No.3
This paper considers an integrated one-vendor multi-buyer production-inventory model where the vendor manufactures multiple products in lot at their associated finite production rates. In the model, it is allowed for each product to be shipped in lot to the buyers even before the whole product production is not completed yet. Each product lot is dispatched to the associated buyer in a number of shipments. The buyers consume their products at fixed rates. The objective is to the production and shipment schedules in the integrated system, which minimizes the total cost per unit time. The total cost consists of production setup cost, inventory holding cost and shipment cost. For the model, an iterative optimal solution procedure with shipment consolidation policy incorporated. It is then tested through numerical experiments to show how efficient and effective the shipment consolidation policy is.