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Son, Yo-Whan,Lee, Yoon-Young,Kim, Rae-Hyun,Seo, Kyung-Won,Ban, Ji-Yeon,Seo, Kum-Young,Koo, Jin-Woo,Kyung, Ji-Hyun,Noh, Nam-Jin The Ecological Society of Korea 2004 Journal of Ecology and Environment Vol.27 No.6
Photosynthetically active radiation (PAR) beneath the forest canopy, understory species richness and diversity, and biomass were measured in a Larix leptolepis plantation seven years after thinning in Yangpyeong. Four different thinning intensities (control, $10\%,\;20\%\;and\;40\%$ stocking reduction) were applied in 1997. The current PAR values were lower than those measured four years after thinning, and PAR at the heavy thinning plots was significantly higher than that of other thinning intensities. A total of 23 species including 9 tall-trees and 14 shrubs were found for the high layer while a total of 82 species including 10 tall-trees, 29 shrubs, and 43 herbs for the low layer. Species richness and diversity generally increased with thinning intensities, and the trends were more evident for the low layer. Aboveground biomass significantly differed among thinning intensities for both shrubs and herbs. Also there was a negative correlation between biomass and the current number of stems per hectare. The current study suggested that the effects of thinning on light conditions at the forest floor, species richness and diversity and production of understory vegetation continued seven years after the treatment.
Long-Term Outcomes of Proximal Gastrectomy versus Total Gastrectomy for Upper-Third Gastric Cancer
Son, Myoung Won,Kim, Yong Jin,Jeong, Gui Ae,Cho, Gyu Seok,Lee, Moon Soo The Korean Gastric Cancer Association 2014 Journal of gastric cancer Vol.14 No.4
Purpose: There are two surgical procedures for proximal early gastric cancer (EGC): total gastrectomy (TG) and proximal gastrectomy (PG). This study aimed to compare the long-term outcomes of PG with those of TG. Materials and Methods: Between January 2001 and December 2008, 170 patients were diagnosed with proximal EGC at Soonchunhyang University Cheonan Hospital, of which 64 patients underwent PG and 106 underwent TG. Clinicopathologic features, postoperative complications, blood chemistry data, changes in body weight, and oncological outcomes were analyzed and retrospectively compared between both groups. Results: Tumor size was smaller and the number of retrieved lymph nodes was lower in the PG group. The postoperative complication rate was 10.9% in the TG group and 16.9% in the PG group. The incidence of Los Angeles grade C and D reflux esophagitis was significantly higher in the TG group. Hemoglobin level was higher and body weight loss was greater in the TG group at 2, 3, and 5 years postoperatively. The albumin levels at 3 and 5 years were lower in the TG group. There was no significant difference in the 5-year overall survival rates between the two groups (P=0.789). Conclusions: Postoperative complications and oncologic outcomes were observed to be similar between the two groups. The PG group showed better laboratory data and weight loss than did the TG group. Moreover, severe reflux esophagitis occurred less frequently in the PG group than in the TG group. PG can be considered as an effective surgical treatment for proximal EGC.
Sonochemical synthesis of MOF-5
Son, Won-Jin,Kim, Jun,Kim, Jaheon,Ahn, Wha-Seung Royal Society of Chemistry 2008 Chemical communications Vol.2008 No.47
<P>High quality MOF-5 crystals of 5–25 μm in size were prepared for the first time using a sonochemical method in substantially reduced synthesis time (<I>ca.</I> 30 min) compared with conventional solvothermal synthesis (24 h).</P> <P>Graphic Abstract</P><P>High quality MOF-5 crystals of 5–25 μm in size were prepared for the first time using a sonochemical method in substantially reduced synthesis time (<I>ca.</I> 30 min) compared with conventional solvothermal synthesis (24 h). <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=b814740j'> </P>
Son, Byung Ho,Ahn, Sei Hyun,Kim, Sung-Won,Kang, Eunyoung,Park, Sue K.,Lee, Min Hyuk,Noh, Woo-Chul,Kim, Lee Su,Jung, Yongsik,Kim, Ku Sang,Noh, Dong-Young,Moon, Byung-In,Suh, Young Jin,Lee, Jeong Eon,Ch Springer US 2012 Breast cancer research and treatment Vol.133 No.3
<P>Prevalence and phenotype of <I>BRCA</I> mutation can vary by race. The purpose of this study is to evaluate the prevalence of <I>BRCA1/2</I> mutations in non-familial breast cancer patients with high risks in Korea. A subset of 758 patients was selected for this study from the KOHBRA nationwide multicenter prospective cohort study. Mutations in <I>BRCA1/2</I> genes were tested using fluorescent-conformation sensitive gel electrophoresis, denaturing high performance liquid chromatography or direct sequencing. Mutation of <I>BRCA1/2</I> genes were identified in 65 (8.6%) patients among total 758 patients [<I>BRCA1</I> mutation: 25 (3.3%), <I>BRCA2</I> mutation: 40 (5.3%)]. According to risk groups, mutation of <I>BRCA1/2</I> genes were identified in 53 (8.5%) of 625 early onset patients (age ≤40), in 22 (17.7%) of 124 bilateral breast cancer patients, in 3 (50.0%) of 6 breast and ovarian cancer patients, in one (5.9%) of 17 male breast cancer patients, in 5 cases (7.6%) of 66 multiple organ cancer patients. The most common mutation was 509C>A for <I>BRCA1</I> and 7708C>T for <I>BRCA2</I>. The prevalence of <I>BRCA1/2</I> mutations by age in early onset patients was significantly different (age <35 vs age ≥35; 10.0 vs 2.9%, <I>p</I> = 0.0007). <I>BRCA1/2</I> mutations for non-familial Korean breast cancer patients were detected at a high rate, particularly, in patients with early onset of less than 35 years of age, bilateral breast cancer, and breast and ovarian cancer. Individualized genetic counseling should be offered for non-familial breast cancer patients with these risk factors.</P>
Overlap syndrome of graft-versus-host disease presenting with diffuse palmoplantar keratoderma
( Jin-hwa Son ),( Woo-il Kim ),( Min-young Yang ),( Won-ku Lee ),( Tae-wook Kim ),( Sung-min Park ),( Hyun-joo Lee ),( Gun-wook Kim ),( Hoon-soo Kim ),( Byung-soo Kim ),( Moon-bum Kim ),( Hyun-chang K 대한피부과학회 2018 대한피부과학회 학술발표대회집 Vol.70 No.1
Recently, the National Institutes of Health Consensus Conference proposed the term “overlap syndrome” of chronic GVHD (cGVHD) to describe the situation when both acute and chronic GVHD appear together. A 3-year-old boy presented acute GVHD symptoms which were fever, diarrhea, and generalized erythematous patches on trunk after peripheral blood stem cell transplantation (PBSCT) for myelodysplastic syndrome. After four months HSCT, whitish reticulated patches on lip and oral mucosa and flat-topped papules on both wrists were observed, accompanied by diffuse scaly hyperkeratotic patches on both palms and soles. The histopathologic findings from the oral mucosa revealed focal interface change with apoptosis and vacuolar change in epidermal basal layer, compatible with lichen planus-like eruption in cGVHD. Marked hyperkeratosis and acanthosis with vacuolar change of basal layer were observed from hyperkeratotic patch of the left palm. He was diagnosed as overlap syndrome of cGVHD with diffuse palmoplantar keratoderma-like eruption. And then, he was treated with systemic corticosteroid and tacrolimus and showed improvement of cutaneous symptoms gradually. This is a rare case of overlap syndrome which shows acute and chronic GVHD symptoms at the same time. Although uncommon, in children who have undergone PBSCT, diffuse palmoplantar keratoderma like lesion could be considered atypical manifestation of overlap syndrome of cGVHD.
Son, Pal Won,Chung, Jae Seung,Kim, Jin Hee,Kim, Sung Han,Chung, Ee-Yung 한국발생생물학회 2014 발생과 생식 Vol.18 No.3
Characteristics of the developmental stages of spermatids during spermiogenesis and phylogenetic classicfication of the species using sperm ultrastructures in male Crassostrea ariakensis were investigated by transmission electron microscope observations. The morphology of the spermatozoon of this species has a primitive type and is similar to those of Ostreidae. Ultrastructures of mature sperms are composed of broad, modified cap-shaped acrosomal vesicle and an axial rod in subacrosomal materials on an oval nucleus, four spherical mitochondria in the sperm midpiece, and satellite fibres which appear near the distal centriole. The axoneme of the sperm tail shows a 9+2 structure. Accordingly, the ultrastructural characteristics of mature sperm of C. ariakensis resemble to those of other investigated ostreids in Ostreidae in the subclass Pteriomorphia. In this study, particularly, two transverse bands (stripes) appear at the anterior region of the acrosomal vesicle of this species, unlike two or three transverse bands (stripes) in C. gigas. It is assumed that differences in this acrosomal substructure are associated with the inability of fertilization between the genus Crassostrea and other genus species in Ostreidae. Therefore, we can use sperm ultrastructures and morphologies in the resolution of taxonomic relationships within the Ostreidae in the subclass Pteriomorphia. These spermatozoa, which contain several ultrastructures such as acrosomal vesicle, an axial rod in the sperm head part and four mitochondria and satellite fibres in the sperm midpiece, belong to the family Ostreidae in the subclass Pteriomorphia.
Jin-Woong Son,HyunCheol Seo,Won-Hwa Hong,Jung-Ha Hwang,Yong-Seo Park 보안공학연구지원센터 2016 International Journal of Hybrid Information Techno Vol.9 No.9
In Korea, single-household is constantly increasing. Residential electricity consumption and living behavior at home are closely connected in single-household. Therefore, to determine electricity consumption characteristic of single-household, this study was investigated living behavior of single-household in university town using questionnaire survey. The survey, which focused on use of electric cooker, laptop and washing machine, investigated that 22% of respondents cooked everyday and they spent about 1 to 4hours per day using laptop and used washing machine two or three times a week. Derived electricity consumption in reference to this result was that laptop, washing machine and electric cooker consumed each 356.3W/week, 962.4W/week and 660.2W/week. Also expected reduction was each 5.7%, 24.6% and 46.5%.
Predictor for deteriorating ward patient with repetitive Medical Emergency Team activation
( Jin Won Huh ),( Ju-ry Lee ),( Youn-kyoung Jung ),( Jin-mi Lee ),( Yujung Shin ),( Sunhui Choi ),( Jeongsuk Son ),( Eun-joo Choi ),( Da Hye Kim ),( Younsuck Koh ),( Chae-man Lim ),( Sang-bum Hong ) 대한결핵 및 호흡기학회 2018 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.126 No.-
Purpose: Recurrent clinical deterioration and repetitive activation of Medical Emergency Team (MET) may be associated with poor outcome. The purpose of this study is to analyze the clinical characteristics of patients with repetitive MET activation and to predict the repetitive MET activation at first MET activation. Methods: We retrospectively reviewed the data of deteriorating patients who were contacted to the MET of Asan Medical Center from Jan 2012 to Nov 2016. The repetitive MET activation means the case of activation within 72 hours after the first MET activation. Results: A total of 7,470 patients were included during the study period. Of these patients, 892 (11.9%) experienced repetitive MET activation. ICU admission rate (49.0% vs. 27.8%, p<0.001) and in-hospital mortality rate (51.7% vs. 36.6%, p<0.001) were higher in the repetitive MET activation group than in the group who were once MET activation. The repetitive MET activation were independently associated with hematologic malignancies (OR: 1.45, 95% CI: 1.13-1.90), activation by respiratory distress(OR: 1.51, 95% CI: 1.20-1.89), airway suctioning (OR: 1.57, 95% CI: 1.24-1.98), apply of Bipap (OR: 1.97, 95% CI: 1.20-3.22), high SOFA (OR: 1.11, 95% CI: 1.07-1.15), and high SpO2/FiO2 score (OR: 1.14, 95% CI: 1.05-1.24) at first MET activation. Conclusion: These risk factors may be useful to identify patients at risk of repetitive MET activation at first MET activation, and then we could classify the high risk group and apply the aggressive intervention for better outcome.