최한기의 기학적 지리학과 지리연구방법론

최원석(Won Suk Choi) 한국지역지리학회 2009 한국지역지리학회지 Vol.15 No.1

Preference Analysis for Flower Jewelry Using Conjoint Analysis

김연희(Yeon Hee Kim),김미진(Mi Jin Kim),윤숙영(Suk Young Yun),장태원(Taeg Won Chang),최병진(Byung Jin Choi) 인간식물환경학회 2022 인간식물환경학회지 Vol.25 No.3

Background and objective: This study was conducted to determine the preferences in flower jewelry by conducting a surveyusing conjoint analysis on the perception of flower jewelry and provide basic data for development of flower jewelryproducts. Methods: For the conjoint analysis, four attributes of flower jewelry were selected. Attribute 1 was related to the mainmaterial of flower jewelry, presented in three levels: cut flowers, potted flowers, and processed flowers. Attribute 2 wasrelated to wearing area presented in five levels of wearing area: hair, neck, ear, arm (wrist) and chest (shoulder). Attribute3 was related to price provided for selling products in flower shops, presented in three levels: less than 30,000 won,50,000-70,000 won, and more than 100,000 won. Attribute 4 was related to flower jewelry wearing time, presented inthree levels: less than 6 hours, 12-24 hours, and more than 24 hours. After extracting 25 profiles through orthogonaldesign, a questionnaire survey was conducted on 402 general participants, from which the responses of 343 participantswere analyzed. Results: By attribute of flower jewelry, the respondents attached most importance to price (34.14%), followed by wearingarea (29.18%), wearing time (18.51%), and material (18.17%), proving that the general public attached most importanceto price (Pearson's R = .987, p = .000). The preference in levels by attribute was highest for processed flowers in material,less than 30,000 won in price, hair in wearing area, and 12-24 hours in wearing time. Conclusion: By making flower jewelry based on the results of the analysis, it would be possible to help increase items soldin flower shops as well as their income.

Liquid‐Crystalline Blue Phase Laser with Widely Tunable Wavelength (Adv. Mater. 21/2013)

Hur, Sung‐,Taek,Lee, Bo Ram,Gim, Min‐,Jun,Park, Kyung‐,Won,Song, Myoung Hoon,Choi, Suk‐,Won WILEY‐VCH Verlag 2013 ADVANCED MATERIALS Vol.25 No.21

<P>A liquid‐crystalline blue‐phase laser with a tunable photonic bandgap (PBG) of over 150 nm and a wide temperature range is demonstrated by Myoung Hoon Song and Suk‐Won Choi on p. 3002. A lasing peak shift of more than 100 nm is realized due to the large PBG shift of the liquid‐crystalline blue phase. The shift in the lasing wavelength was reversible during repeated temperature changes over the entire stability range of the liquid‐crystalline cubic blue phase. </P>

오공약침의 안전성에 대한 임상적 연구

소기숙,최회강,박소영,고강훈,김성남,이옥자,윤민영,문형철,김성철,이정훈,나원경,So, Ki-suk,Choi, Hoi-kang,Park, So-young,Koh, Kang-hun,Kim, Sung-nam,Lee, Ok-ja,Yun, Min-young,Mun, Hyung-chul,Kim, Sung-chul,Lee, Jung-hun,Na, Won-kyung 대한침구의학회 2004 대한침구의학회지 Vol.21 No.1

Objective: Recently scolopendrid aquacupuncture has been a good effect on pain control but it has not been known about clinical safety. So, In order to prove the clinical safety of scolopendrid aquacupuncture, We have observed the physical reac-tion and clinical pathology test after scolopendrid aquacupuncture treatment. Methods: We analyzed physical reaction and clinical pathology test before and after Scolopendrid aquacupuncture treatment of 30 patients suffering from pain, who admitted department of Acupunture and Moxibustion, College of Oriental Medicine, Won-Kwang University Kwangju hospital. Results & Conclusions: The results were summarized as follows. 1) The distribution of sex was 14 males and 16 females, and the average of patients age was 46.2 years. 2) The distribution of symptom was lumbago, lumbago with radiating pain, nuchal pain and knee joint pain. 3) In the 30 patients treated with Scolopendrid aquacupuncture, hematologic test did not show remarkable change. 4) In the 30 patients treated with Scolopendrid aquacupuncture, Liver function test(AST, ALT, ALP) showed a slight decrease on the contrary, and abnormal rate showed a decrease of 1.0%(from 3.3% to 2.3%) compared with previous study. 5) In the 30 patients treated with Scolopendrid aquacupuncture, Renal function test(BUN, Cr) and abnormal rate(from 2.5% to 2.0%) showed a slight decrease on the contrary. 6) In the 30 patients treated with Scolopendrid aquacupuncture. Electrolyte were normal range before & after treatment. 7) In the results of the Urine analysis of 30 patients, Leukocyte, Protein. Glucose, Keton, Bilirubin, U-bilinogen were not detected before and after Scolopendrid aquacupuncture treatment, and the rest almost made no difference. 8) In the Physical reactions, all of the patients complained of pain of body partially, only one patient showed reddish and itch, but symptoms like those were entirely disappeared within 24 hours and whole body pain, swelling, headache, dizziness, fatigue and nausea was not observed.

Association of IL-17A/F polymorphisms with the risk of gastritis and gastric cancer in the Korean population

Choi, Won Suk,Kim, Olga,Yoon, Jung Hwan,Park, Yong Gyu,Nam, Suk Woo,Lee, Jung Young,Park, Won Sang THE KOREAN SOCIETY OF TOXICOGENOMICS AND TOXICOPRP 2016 MOLECULAR AND CELLULAR TOXICOLOGY Vol. No.

We investigated the effects of IL-17A rs2275913 and IL-17F rs763780 polymorphisms on IL-17 expression and the association of these polymorphisms with the risk of gastritis and gastric cancer. IL-17A expression was closely associated with the degree of gastritis in 55 non-neoplastic gastric mucosae and was markedly decreased in subjects carrying A allele. In addition, IL-17F expression was increased in the T allele carriers, but was not associated with gastritis. In 300 gastric cancer patients, the frequency of the rs2275913 A/A genotype was significantly higher in intestinal-type gastric cancer, when compared to that of diffuse-type gastric cancer (P>0.05). There was a significant difference in genotype distribution and allele frequencies of IL-17F rs763780 when comparing gastric cancer patients and 247 healthy controls. These results suggest that the polymorphisms of IL-17F rs763780 and IL-17A rs2275913 are closely associated with susceptibility to the development of gastritis and gastric cancer in the Korean population.

Programmable peptide-directed two dimensional arrays of various nanoparticles on graphene sheets

Choi, Bong Gill,Yang, Min Ho,Park, Tae Jung,Huh, Yun Suk,Lee, Sang Yup,Hong, Won Hi,Park, HoSeok Royal Society of Chemistry 2011 Nanoscale Vol.3 No.8

<P>In this research, we report an innovative, chemical strategy for the <I>in situ</I> synthesis and direct two-dimensional (2D) arraying of various nanoparticles (NPs) on graphenes using both programmed-peptides as directing agents and graphenes as pre-formed 2D templates. The peptides were designed for manipulating the enthalpic (coupled interactions) constraint of the global system. Along with the functionalization of graphene for the stable dispersion, peptides directed the growth and array of NPs in a controllable manner. In particular, the sequences of peptides were encoded by the combination of glutamic acid (E), glycine (G), and phenylalanine (F) amino acids as follows: (E-G-F)<SUB>3</SUB>-G, with E for the interaction with NPs and F and G for the interaction with graphenes. For the entropic (restricted geometry) constraint, graphene was used as a 2D scaffold to tune the size, density, and position of NPs, while maintaining the intrinsic properties for electrochemical applications. The excellent quality of the resultant hybrids was demonstrated by their high electrocatalytic activity in the electrooxidation of methanol. This synergistic combination of peptides and graphenes allowed for a uniform 2D array and spontaneous organization of various NPs (<I>i.e.</I>, Pt, Au, Pd, and Ru), which would greatly expand the utility and versatility of this approach for the synthesis and array of the advanced nanomaterials.</P> <P>Graphic Abstract</P><P>Direct synthesis and uniform two-dimensional arraying of discrete nanoparticles were readily accomplished using programmable peptides as directing agents and graphenes as pre-formed 2D templates. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c1nr10276a'> </P>

Laparoscopic restaging surgery in patient with unexpected uterine cancer

( Won Moo Lee ),( Jae Man Bae ),( A Ra Koh ),( Un Suk Jung ),( Jung Hwa Ko ),( Joong Sub Choi ) 대한산부인과학회 2015 대한산부인과학회 학술대회 Vol.101 No.-

Preoperative Erythropoietin Treatment Improves Overall Survival after Major Hepatic Resection in Cirrhotic Rat Models

( Suk-won Suh ),( Seung Eun Lee ),( Yoo Shin Choi ) 대한간학회 2017 춘·추계 학술대회 (KASL) Vol.2017 No.1

Aims: In cirrhotic liver, major hepatic resection may cause a fatal clinical course that it is still a concern. Erythropoietin (EPO) has been known to have protective effect and stimulator of liver regeneration in previous studies. This study aims to investigate the effect of EPO after major hepatic resection in cirrhotic rat models. Methods: Cirrhotic liver was induced by an intraperitoneal injection of TAA in seventy Lewis rats. Two groups with (n=36) and without (n=36) EPO (1 IU/g, every other day, 5 times before operation) underwent major hepatectomy (left and a half of median lobes) and biochemical, histopathological and immunohistochemical parameters and overall survival were compared. Results: EPO led to significant decrement of aspartate aminotransferase and alanine aminotransferase and interleukin (IL)-1β expression at 48 hr after surgical resection. With EPO, hepatocyte growth factor and vascular endothelial growth factor expression at 1hr and IL-6 expression at 24 hr were significantly increased and Ki-67 was also significantly increased during 120 hr after surgical resection. Overall survival was significantly improved among EPO-treated rats (P = 0.034). Conclusions: Preoperative EPO treatment has protective effect and stimulates liver regeneration which leads to improvement of overall survival after surgical resection in cirrhotic rat models.

Metachronous liver metastasis after curative gastrectomy for gastric adenocarcinoma

Suk-Hyun Shin(신석현),Jong Man Kim(김종만),Su Mi Kim(김수미),Min-Gew Choi(최민규),Choon Hyuck David Kwon(권준혁),Jae-Won Joh(조재원),Sung Kim(김성),Suk-Koo Lee(이석구),Cheol Keun Park(박철근) 대한종양외과학회 2014 Korean Journal of Clinical Oncology Vol.10 No.2

Purpose: The prognosis of patients with liver metastasis from gastric cancer is poor and the optimal treatment remains undetermined. This study identified prognostic factors for survival of patients with metachronous liver metastasis with no other metastatic site after gastrectomy for primary gastric cancer. We also evaluated the clinical impact of hepatic resection. Methods: Between 1997 and 2013, 19,588 curative gastrectomies for gastric adenocarcinoma were performed and 52 patients were diagnosed with metastasis to only the liver. We retrospectively analyzed the clinicopathologic factors of these patients. Results: The median time from gastrectomy to diagnosis of liver metastasis was 16 months (range, 1?65 months). Median survival time after the diagnosis of liver metastasis was 13 months (range, 3?64 months). The 1-year, 2-year, and 3-year patient survival rates after diagnosis of liver metastasis were 53.8%, 26.6%, and 19.9%, respectively. Twelve patients (23%) underwent liver resection for liver metastasis. The 1-year, 3-year, and 5-year overall survival rates were 92%, 42%, and 42% in the hepatic resection group and 43%, 13%, and 7% in the non-hepatic resection group (P=0.002). Multivariate analysis showed that hepatic resection, pathologic stage I and II of the primary tumor, and intestinal type in Lauren classification were predisposing factors for patient survival. Conclusion: Liver resection for resectable metachronous liver metastasis diagnosed after curative gastrectomy increases survival in patients with pathologic stage I or II and intestinal type in Lauren classification for the primary tumor.

Safety and Feasibility of Solo Single-Incision Laparoscopic Cholecystectomy Compared to Conventional Three-Incision Laparoscopic Cholecystectomy: A Multicenter Cohort Study

( Suk-won Suh ),( Youngrok Choi ),( Ho-seong Han ),( Yoo-seok Yoon ),( Jai Young Cho ),( Yoo Shin Choi ),( Seung Eun Lee ),( Jaehong Jeong ) 대한간학회 2018 춘·추계 학술대회 (KASL) Vol.2018 No.1

Aims: Although increment application of single-incision laparoscopic cholecystectomy (SILC), it had technical difficulties of physical disturbance and unstable surgical view through the small incision, therefore, we introduced solo single-incision LC (S-SILC) using laparoscopic scope holder, a simple, fixed and easily handled by a surgeon. Methods: A comparison of S-SILC (group A, n=566) and conventional three-incision laparoscopic cholecystectomy (C-TILC, group B, n=874) from January, 2013 to December, 2016 at multicenter was performed. Baseline characteristics, perioperative outcomes including complications were compared. Results: Mean operative time was not significantly different between two groups (P = 0.176), however, S-SILC had more intraoperative GB perforation, especially in initial period (17.0% vs. 2.3%, P < 0.001) and increased usage of additional port (3.2% vs. 0.5%, P < 0.001) and shorter hospital stay (3.3 ± 1.7 vs. 1.9 ± 2.7, P<0.001) than C-TILC. There was no significant difference of major postoperative complications between two groups (P = 0.909) and its identified risk factors were not operation type (P = 0.971), but mean age (P = 0.004) and upper abdominal operation history (P = 0.048). Conclusions: S-SILC is feasible and safe, but careful selection of surgical candidates is necessary, in initial period of S-SILC experience.