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Wan-Cheol Cho, Kyung-Min Poo, Hend Omar Mohamed, Tae-Nam Kim, Yul-Seong Kim, Moon Hyun Hwang, Do-Won Jung, Kyu-Jung Chae
Volatile organic compounds (VOCs) are highly toxic contaminants commonly dissolved in industrial wastewater. Therefore, treatment of VOC-containing wastewater requires a robust and rapid reaction because liquid VOCs can become volatile secondary pollutants. In this study, electro-oxidation with catalytic composite dimensionally stable anodes (DSAs)-a promising process for degrading organic pollutants-was applied to remove various VOCs (chloroform, benzene, toluene, and trichloroethylene). Excellent treatment efficiency of VOCs was demonstrated...
May 11, 2018: Chemosphere
Kwangsung Park, Hyoung Keun Park, Sae Woong Kim, Dae Yul Yang, Jong Kwan Park, Hyun Jun Park, Ki Hak Moon, Du Geon Moon, Kweon Sik Min, Hwancheol Son, Sung Won Lee, Jae Seog Hyun, Woo Suk Choi, Sang Kuk Yang
PURPOSE: The purpose of this study was to evaluate the efficacy of treatment in patients with non-bothering nocturia. MATERIALS AND METHODS: In this prospective multicenter study, patients who visited hospitals for treatment of voiding symptoms were enrolled. Inclusion criteria were: 1) men >45 years, and 2) nocturia ≥2 confirmed by a three-day voiding diary. Subjects were divided into non-bothering and bothering groups based on International Consultation on Incontinence Questionnaire Nocturia (ICIQ-N) question 2b...
May 17, 2018: World Journal of Men's Health
Ji-Yul Kim, E-Eum Woo, In-Kyoung Lee, Bong-Sik Yun
In our effort to find antioxidants from the higher fungi, we isolated three new compounds (1-3) with a known compound, spirobenzofuran (4), from the culture broth of Hericium coralloides. Bioassay-guided fractionation led to the isolation of these compounds, and we determined the chemical structures through spectroscopic methods. These compounds exhibited antioxidant activity in the range of IC50 values of 29-66 μM in the 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical-scavenging assay...
May 17, 2018: Journal of Antibiotics
Jung Ki Jo, Jae Heon Kim, Kyu Shik Kim, Jae Hoon Chung, Sung Yul Park, Yong Tae Kim, Hong Yong Choi, Eun-Seop Song, Bora Lee, Seung Wook Lee
OBJECTIVE: To investigate the efficacy and safety of instilling highly concentrated hyaluronic acid (HA)/chondroitin sulfate (CS) on the ureteral stent-related pain, urinary symptoms, and quality of life (QoL) of patients who underwent ureteroscopic lithotripsy for ureter stones followed by ureteral stent placement. PATIENTS AND METHODS: Eligible patients were randomly allocated to receive intravesical instillation with HA/CS or normal saline just after ureteral stent placement...
May 17, 2018: BJU International
Chang-Yul Kim, Yongtaek Seo, Chan Lee, Gyu Hwan Park, Jung-Hee Jang
We have investigated the neuroprotective and memory enhancing effect of [6]-gingerol (GIN), a pungent ingredient of ginger, using an animal model of amnesia. To determine the neuroprotective effect of GIN on cognitive dysfunction, scopolamine (SCO, 1 mg/kg, i.p.) was injected into C57BL/6 mice, and a series of behavioral tests were conducted. SCO-induced behavior changes and memory impairments, such as decreased alteration (%) in Y-maze test, increased mean escape latency in water maze test, diminished step-through latency in passive avoidance test, and shortened freezing time in fear condition test, were significantly prevented and restored by the oral administration of GIN (10 or 25 mg/kg/day)...
2018: Evidence-based Complementary and Alternative Medicine: ECAM
Woosuk Choi, Kwang-Yul Kim
Drought during the early vegetation growing season (spring through early summer) is a severe natural hazard in the large cropland over North America. Given the recent increasing severity of climate change manifested as surface warming, there has been a growing interest in how warming affects drought and the prospect of drought. Here we show the impact of boreal warming on the spring and early summer drought over North America using Cyclostationary Empirical Orthogonal Function analysis. Northern Hemispheric warming, the leading mode of the surface air temperature variability, has led to a decrease in precipitation, evaporation and moisture transport over the central plain of North America...
May 14, 2018: Scientific Reports
Seung Min Lee, Kyung Jin Nam, Ki Seok Choo, Jin You Kim, Dong Wook Jeong, Hyun Yul Kim, Jee Yeon Kim
Background Non-mass enhancements (NME) with invasive components account for 10-42% of total malignant NMEs. The factors associated with invasiveness on magnetic resonance imaging (MRI) could be useful for clinical assessment and treatment. Purpose To evaluate the clinical significances of the distributions and internal enhancement patterns (IEP) of malignant NMEs on 3-T breast MRI. Material and Methods A total of 448 consecutive women with newly diagnosed breast cancer that had undergone preoperative MRI and surgery between February 2013 and March 2016 were identified...
January 1, 2018: Acta Radiologica
Chang-Kug Kim, Young-Joo Seol, Sampath Perumal, Jonghoon Lee, Nomar Espinosa Waminal, Murukarthick Jayakodi, Sang-Choon Lee, Seungwoo Jin, Beom-Soon Choi, Yeisoo Yu, Ho-Cheol Ko, Ji-Weon Choi, Kyoung-Yul Ryu, Seong-Han Sohn, Isobel Parkin, Tae-Jin Yang
The concept of U's triangle, which revealed the importance of polyploidization in plant genome evolution, described natural allopolyploidization events in Brassica using three diploids [B. rapa (A genome), B. nigra (B), and B. oleracea (C)] and derived allotetraploids [B. juncea (AB genome), B. napus (AC), and B. carinata (BC)]. However, comprehensive understanding of Brassica genome evolution has not been fully achieved. Here, we performed low-coverage (2-6×) whole-genome sequencing of 28 accessions of Brassica as well as of Raphanus sativus [R genome] to explore the evolution of six Brassica species based on chloroplast genome and ribosomal DNA variations...
May 9, 2018: Scientific Reports
Bo Young Choi, Seok Joon Won, Jin Hee Kim, Min Sohn, Hong Ki Song, Tae Nyoung Chung, Tae Yul Kim, Sang Won Suh
Several studies have demonstrated that excitatory amino acid carrier-1 (EAAC1) gene deletion exacerbates hippocampal and cortical neuronal death after ischemia. However, presently there are no studies investigating the role of EAAC1 in hippocampal neurogenesis. In this study, we tested the hypothesis that reduced cysteine transport into neurons by EAAC1 knockout negatively affects adult hippocampal neurogenesis under physiological or pathological states. This study used young mice (aged 3-5 months) and aged mice (aged 11-15 months) of either the wild-type (WT) or EAAC1 -/- genotype...
May 2, 2018: Scientific Reports
Seo Young Sohn, Eun Kyung Lee, Sung-Sik Han, You Jin Lee, Yul Hwangbo, Young Hwa Kang, Seung Duk Lee, Seong Hoon Kim, Sang Myung Woo, Woo Jin Lee, Eun Kyung Hong, Sang-Jae Park
Diabetes mellitus (DM) is prevalent in patients with pancreatic cancer and tends to improve after tumor resection. However, the glycemic response of non-pancreatic cancer patients after surgery has not been examined in detail. We aimed to investigate the changes in glucose metabolism in patients with pancreatic cancer or non-pancreatic cancer after pancreatoduodenectomy (PD).We prospectively enrolled 48 patients with pancreatic cancer and 56 patients with non-pancreatic cancer, who underwent PD. Glucose metabolism was assessed with fasting glucose, glycated hemoglobin (HbA1c), plasma C-peptide and insulin, quantitative insulin check index (QUICKI), and a homeostatic model assessment of insulin resistance (HOMA-IR) and β cell (HOMA-β) before surgery and 6 months after surgery...
May 2018: Medicine (Baltimore)
Yul-Wan Sung, Yousuke Kawachi, Uk-Su Choi, Daehun Kang, Chihiro Abe, Yuki Otomo, Seiji Ogawa
The success of human life in modern society is highly dependent on occupation. Therefore, it is very important for people to identify and develop a career plan that best suits their aptitude. Traditional test batteries for vocational aptitudes are not oriented to measure developmental changes in job suitability because repeated measurements can introduce bias as the content of the test batteries is learned. In this study, we attempted to objectively assess vocational aptitudes by measuring functional brain networks and identified functional brain networks that intrinsically represented vocational aptitudes for 19 job divisions in a General Aptitude Test Battery...
May 1, 2018: Human Brain Mapping
Joo-Yul Bae, Jae Kwang Kim, Joon O Yoon, Joon Hee Kim, Byeong Cheol Ho
BACKGROUND: We investigated preoperative factors among demographic and clinical characteristics, as well as psychological factors that influence postoperative patient satisfaction, with the goal of assisting preoperative patient consultation for CTR. MATERIALS AND METHODS: We included 92 hands from 60 patients diagnosed with idiopathic carpal tunnel syndrome. We selected the following factors as possible preoperative predictors for patient satisfaction: age, sex, duration of symptoms, static two-point discrimination, the Semmes-Weinstein monofilament test, grip strength, electrophysiological category, and scores for the Boston Carpal Tunnel Questionnaire, the Pain Anxiety Symptoms scale, and the Center for the Epidemiological Study of Depression scale...
April 27, 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
Eun-Jung Kwak, Sangook Nam, Kyeong-Mee Park, Seo-Yul Kim, Jisun Huh, Wonse Park
OBJECTIVE: Several novel oral anticoagulants (NOACs) are currently prescribed for patients suffering from atrial fibrillation, pulmonary thromboembolism, and venous thrombosis. However, there is no clinical guideline for dental treatment in patients taking NOACs. This study investigated bleeding events related to various dental treatments. MATERIALS AND METHODS: This retrospective study included 120 patients (153 cases) who were prescribed NOACs and received dental procedures in the Department of Advanced General Dentistry at Yonsei University Dental Hospital from January 2014 to June 2017...
April 25, 2018: Clinical Oral Investigations
Dong Yul Oh, Il Dong Yun
Detecting an anomaly or an abnormal situation from given noise is highly useful in an environment where constantly verifying and monitoring a machine is required. As deep learning algorithms are further developed, current studies have focused on this problem. However, there are too many variables to define anomalies, and the human annotation for a large collection of abnormal data labeled at the class-level is very labor-intensive. In this paper, we propose to detect abnormal operation sounds or outliers in a very complex machine along with reducing the data-driven annotation cost...
April 24, 2018: Sensors
Han Hye-Yul, Kim Shin-Jeong, Ellis Kevin Wayne, Kang Kyung-Ah
Studies on the management of respiratory diseases in children have focused on family members' participation and caregivers' needs. However, evidence-based data on the effectiveness of mothers' management of acute respiratory diseases (ARDs) in toddlers are lacking. This study aimed to examine the factors influencing the caregiving performance of mothers of toddlers hospitalized for an ARD and to test a hypothetical causal model based on the Caregiving Effectiveness Model (CEM). A cross-sectional design was used, and participants included 291 mothers of toddlers aged 12-36 months who were hospitalized for an ARD...
January 1, 2018: Journal of Child Health Care: for Professionals Working with Children in the Hospital and Community
Kwang Yul Lee, Tsatsral Batmunkh, Hung Soo Joo, Kihong Park
The size distribution and chemical components of a fine fraction (<2.5 μm) of road dust collected at urban sites in Korea (Gwangju) and Mongolia (Ulaanbaatar) where distinct urban characteristics exist were measured. A clear bimodal size distribution was observed for the resuspended fine road dust at the urban sites in Korea. The first mode peaked at 100-110 nm, and the second peak was observed at 435-570 nm. Ultrafine mode (~30 nm) was found for the fine road dust at the Mongolia site, which was significantly affected by residential coal/biomass burning...
April 18, 2018: Journal of the Air & Waste Management Association
Kangeun Ko, Jinhee Woo, Ju Yong Bae, Hee Tae Roh, Yul Hyo Lee, Ki Ok Shin
BACKGROUND: The purpose of this study was to determine whether regular exercise training enhances intramuscular triglyceride (IMTG) lipolysis sensitivity during consumption of a continued high-fat diet by exploring changes in biochemical factors activated by IMTG lipolysis. METHODS: Male C57BL/6 mice aged 4 weeks were randomly divided into a high-fat diet group (HF) to induce obesity for 6 weeks and a control (CO) group. Thereafter, the HF group was divided into a high-fat diet group (HF) and high-fat diet + training group (HFT)...
April 16, 2018: Lipids in Health and Disease
Ki Don Chang, Ali Abdel Raheem, Kwang Hyun Kim, Cheol Kyu Oh, Sung Yul Park, Young Sik Kim, Won Sik Ham, Woong Kyu Han, Young Deuk Choi, Byung Ha Chung, Koon Ho Rha
PURPOSE: Data regarding the long-term oncologic and functional outcomes of robotic-assisted, laparoscopic, and open partial nephrectomy (RPN, LPN and OPN) is lacking. Our aim was to compare outcomes among RPN, LPN and OPN with a 5-year median follow-up. PATIENTS AND METHODS: We retrospectively analyzed 1308 patients who underwent PN (RPN, n=380; LPN, n=206; OPN, n=722) between 2006 and 2012 at four academic centers. We performed 1:1:1 propensity score matching adjustment based on confounding variables among groups and 366 patients (122 in each group) were included in the final analysis...
April 12, 2018: BJU International
Song-Hee Han, Milim Kim, Yul Ri Chung, Bo La Yun, Mijung Jang, Sun Mi Kim, Eunyoung Kang, Eun-Kyu Kim, So Yeon Park
Purpose: The management of benign intraductal papilloma (IDP) without atypia diagnosed on core needle biopsy (CNB) remains controversial. This study was performed to evaluate the rate of upgrading to malignancy or high-risk lesions after excision and to identify factors associated with upgrading using a large series of benign IDP cases without atypia. Methods: We included patients who were diagnosed as having benign IDP without atypia on CNB and underwent surgical or vacuum-assisted excision between 2010 and 2015...
March 2018: Journal of Breast Cancer
Sang Yull Kang, Yoo Seok Kim, Zisun Kim, Hyun-Yul Kim, Se Kyung Lee, Kyu-Won Jung, Hyun Jo Youn
The Korean Breast Cancer Society (KBCS) has established a nationwide breast cancer database using an online registration program in 1996. The present study aimed to analyze the basic findings and trends of breast cancer in Korea in 2015 using the data provided by the Korea Central Cancer Registry and the KBCS. In 2015, a total of 22,550 patients were newly diagnosed with breast cancer, of which 3,331 were carcinoma in situ cases and 19,219 were invasive cancer cases. The incidence rate of breast cancer in Korea has steadily increased since the nationwide database was established, and the crude rate and age-standardized rate including that of carcinoma in situ , were 88...
March 2018: Journal of Breast Cancer
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