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Eun-Do Kim,Jin-Kwon Lee,Jin-Kyu Cho,Jae-Myung Kim,Ji-Ho Park,Ju-Yeon Kim,Sang-Ho Jeong,Young-Tae Ju,Chi-Young Jeong,Eun-Jung Jung,Young-Joon Lee1,Soon-Chan Hong,곽승진 대한종양외과학회 2019 Korean Journal of Clinical Oncology Vol.15 No.2
Purpose: Whether subtotal or total colectomy with primary anastomosis (PA) is safer than Hartmann procedure (HP) for left-sided colon cancer obstruction or perforation remains controversial. The purpose of this study was to compare postoperative morbidity, mortality, and defecation frequency between PA and HP for left-sided colon cancer obstruction or perforation. Methods: This retrospective study enrolled 54 patients from January 2014 to February 2018 who underwent emergency surgery due to left-sided colon cancer obstruction or perforation. Results: PA was carried out in 20 patients while HP was performed for 34 patients. Thirty-day mortality did not show significant difference between the two groups (15.0% vs. 14.7%, P=1.000). No anastomotic leakage occurred in PA group while three (8.8%) cases of stump leakage occurred in HP group. Stoma repair was performed for 13 cases (44.8%) and stoma reformation was performed for one case in HP group (7.7%). Stoma related complications occurred in five cases (17.24%). For patients after stoma repair, defecation frequency at 3 months after operation was 2.91±2.88 times per day in PA group and 2.86±2.63 times per day in HP group. At 1 year after operation, defecation frequency was changed to 1.40±1.12 times per day in PA group and 1.17±0.39 times per day in HP group. Conclusion: Primary ileosigmoid or ileorectal anastomosis for left-sided colon cancer obstruction or perforation is safe, and shows similar outcome of defecation frequency compared to H
Lee, Sun Hwa,Kim, Hyun Wook,Hwang, Jin Ok,Lee, Won Jun,Kwon, Joon,Bielawski, Christopher W.,Ruoff, Rodney S.,Kim, Sang Ouk WILEY‐VCH Verlag 2010 Angewandte Chemie Vol.122 No.52
<P><B>Graphenoxid‐Plättchen</B> können sich zu hoch geordneten und flexiblen Kohlenstoff‐Filmen mit einstellbaren Porenmorphologien organisieren. Durch Dotieren mit Stickstoff werden die elektrischen Eigenschaften und Superkondensator‐Charakteristika der kohlenstoffbasierten Strukturen verbessert, und eine chemische Funktionalisierung wird ermöglicht.</P>
Lee, Sang-Wha,Park, Joon-Seo,Lee, T. Randall Korean Chemical Society 2011 Bulletin of the Korean Chemical Society Vol.32 No.1
The wettabilities of the partially fluorinated polymers (ethylene-tetrafluoroethylene copolymer (ETFE), ethylenechlorotrifluoroethylene copolymer (ECTFE), and poly(vinylidene fluoride) (PVDF)) were investigated by contact angle measurements. Zisman plots for ETFE and ECTFE exhibited linear relationships, while the Zisman plot for PVDF showed a slight curvature, which was interpreted to indicate strong non-dispersive interactions between the surface and the contacting liquids. The Lifshitz-van der Waals forces of the fluoropolymers were estimated to increase in the order of ETFE < PVDF $\ll$ ECTFE. An evaluation of the polar or "acid-base" interaction energies showed that PVDF, which possesses the most acidic hydrogens among the examined fluoropolymers, has the strongest acid-base interactions.
HOMOGENEOUS SUBMERSIONS OF 3-DIMENSIONAL GEOMETRIES
Lee, Kyung-Bai,Park, Joon-Sang Korean Mathematical Society 2012 대한수학회보 Vol.49 No.5
We study the geometry of the images of 1-dimensional homogeneous submersions for each of the model spaces X of the eight 3-dimensional geometries. In particular, We shall calculate the group of isometries and the curvatures of the base surfaces for each of the model spaces of 3-dimensional geometries, with respect to every closed subgroup of the isometries of X acting freely.
Characteristics of meso-sized plastic marine debris on 20 beaches in Korea
Lee, Jongsu,Lee, Jongmyoung,Hong, Sunwook,Hong, Sang Hee,Shim, Won Joon,Eo, Soeun Elsevier 2017 MARINE POLLUTION BULLETIN Vol.123 No.1
<P><B>Abstract</B></P> <P>We surveyed the abundance and accumulation patterns of mesoplastic marine debris (5–25mm) on 20 beaches in Korea. The mean abundance of it was 13.2items/m<SUP>2</SUP>, and the mean weight was 1.5g/m<SUP>2</SUP>. Hard plastic and Styrofoam were the dominant types. The proportions of hard plastic and Styrofoam were highly variable among the beaches, each accounting for 0–100% of the total debris on a given beach with 32% and 48.5% (by number) on average, respectively. Relatively lower abundances of mesoplastic marine debris compared with our previous studies were likely due by differences of the sampling areas within the beach. The samples of this research were selected from backshore, middle line, and water edge whereas they were selected from high strandline and backshore in our previous studies. It should be considered when discussing the level of mesoplastic marine debris.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Mean number of mesoplastic marine debris in Korean coasts was 13.2item/m<SUP>2</SUP>. </LI> <LI> Mean weight of mesoplastic marine debris in Korean coasts was 1.5g/m<SUP>2</SUP>. </LI> <LI> Hard plastic and styrofoam were the dominant types of plastic marine debris. </LI> <LI> Relatively low abundance of mesoplastic marine debris was determined. </LI> <LI> Low abundance seemed to come from selection of sampling area within the beach. </LI> </UL> </P>
Lee, Jinsoo,Jeong, Ji-Seong,Cho, Kyung-Jin,Moon, Kyeong-Nang,Kim, Sang Yun,Han, Byungcheol,Kim, Yong-Soon,Jeong, Eun Ju,Chung, Moon-Koo,Yu, Wook-Joon The Korean Society of Ginseng 2019 Journal of Ginseng Research Vol.43 No.2
Background: Korean Red Ginseng has been widely used in traditional oriental medicine for a prolonged period, and its pharmacological effects have been extensively investigated. In addition, Angelica gigas and deer antlers were also used as a tonic medicine with Korean Red Ginseng as the oriental herbal therapy. Methods: This study was conducted to evaluate the potential toxicological effect of KGC-HJ3, Korean Red Ginseng with angelica gigas and deer antlers, on reproductive and developmental functions including fertility, early embryonic development, maternal function, and embryo-fetal development. KGC-HJ3 was administered by oral gavage to Sprague-Dawley rats (22 animals per sex per group) at dose levels of 0 mg/kg (control), 500 mg/kg, 1000 mg/kg, and 2000 mg/kg to evaluate the potential toxicological effect on fertility and early embryonic development. In addition, KGC-HJ3 was also administered by oral gavage to mating-proven Sprague-Dawley rats (22 females per group) during the major organogenesis period at dose levels of 0 mg/kg (control), 500 mg/kg, 1000 mg/kg, and 2000 mg/kg to evaluate the potential toxicological effect on maternal function and embryo-fetal development. Results and conclusion: No test item-related changes in parameters for fertility, early embryonic development, maternal function, and embryo-fetal development were observed during the study period. On the basis of these results, it was concluded that KGC-HJ3 did not have toxicological potential on developmental and reproductive functions. Therefore, no observed adverse effect levels of KGC-HJ3 for fertility, early embryonic development, maternal function, and embryo-fetal development is considered to be at least 2000 mg/kg/day.