Factors Affecting Hand Washing Behavior of Elementary Students in Indonesia

Ran Yi Kang,Su Hyeon Cha,Ha Jin Park,Ho Kyung Ryu 한국식품영양과학회 2018 한국식품영양과학회 학술대회발표집 Vol.2018 No.10

The effect of bilayer hole transporting layers using thermal crosslinking technology on the characteristics of organic light-emitting diodes

Yi, Geum Ran,Kim, Hyun Soo,Jeong, Ki Won,Kim, Chang Kyo Informa UK (TaylorFrancis) 2017 MOLECULAR CRYSTALS AND LIQUID CRYSTALS - Vol.651 No.1

<P>A persistent problem with solution processes is dissolution of the first deposited layer by the solution of the second deposited layer. Because the energy barrier between the highest occupied molecular orbital (HOMO) levels of Poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(4,4-(N-(4-s-butylphenyl)diphenylamine)] (TFB) used as a first hole transporting layer (HTL) and poly(9,9-dioctylfluorene-co-benzothiadiazole) (F8BT) used as a light-emitting layer (EML) is so large, poly(N-vinylcarbazole) (PVK) was inserted as a second HTL between TFB and F8BT to facilitate hole injection from the TFB layer into the F8BT layer. In this paper, we demonstrate the effect of bilayer HTLs in solution-processed organic light-emitting diodes (OLEDs) using thermally-annealed TFB. The characteristics of OLEDs with HTLs, with and without thermally annealed TFB, are compared. The maximum external quantum efficiency (EQE) of an OLED, with thermally-annealed TFB and spin-coated PVK on the TFB used as bilayer HTLs, increases significantly to 0.617%, whereas the EQE of the OLED, without thermally annealed TFB and PVK spin-coated directly on the as-coated TFB, is greatly reduced to 0.195%. This result indicates that insertion of PVK between thermally annealed TFB and F8BT layers can facilitate easy hole injection from the TFB layer into the F8BT layer and enhance OLED performance.</P>

Prognostic analysis of uterine cervical cancer treated with postoperative radiotherapy: importance of positive or close parametrial resection margin

Yi-Jun Kim,MD,Kyung-Ja Lee,MD,PhD,Kyung Ran Park,MD,PhD,Jiyoung Kim,MD,Yi-Jun Kim,MD,Kyung-Ja Lee,MD,PhD,Kyung Ran Park,MD,PhD,Jiyoung Kim,MD,Woong Ju,MD,PhD,Yun Hwan Kim,MD,PhD,Jihae Lee,MD 대한방사선종양학회 2015 Radiation Oncology Journal Vol.33 No.2

Purpose: To analyze prognostic factors for locoregional recurrence (LRR), distant metastasis (DM), and overall survival (OS) in cervical cancer patients who underwent radical hysterectomy followed by postoperative radiotherapy (PORT) in a single institute. Materials and Methods: Clinicopathologic data of 135 patients with clinical stage IA2 to IIA2 cervical cancer treated with PORT from 2001 to 2012 were reviewed, retrospectively. Postoperative parametrial resection margin (PRM) and vaginal resection margin (VRM) were investigated separately. The median treatment dosage of external beam radiotherapy (EBRT) to the whole pelvis was 50.4 Gy in 1.8 Gy/fraction. High-dose-rate vaginal brachytherapy after EBRT was given to patients with positive or close VRMs. Concurrent platinum-based chemoradiotherapy (CCRT) was administered to 73 patients with positive resection margin, lymph node (LN) metastasis, or direct extension of parametrium. Kaplan-Meier method and log-rank test were used for analyzing LRR, DM, and OS; Cox regression was applied to analyze prognostic factors. Results: The 5-year disease-free survival was 79% and 5-year OS was 91%. In univariate analysis, positive or close PRM, LN metastasis, direct extension of parametrium, lymphovascular invasion, histology of adenocarcinoma, and chemotherapy were related with more DM and poor OS. In multivariate analysis, PRM and LN metastasis remained independent prognostic factors for OS. Conclusion: PORT after radical hysterectomy in uterine cervical cancer showed excellent OS in this study. Positive or close PRM after radical hysterectomy in uterine cervical cancer correlates with poor prognosi

Trends in the rapid detection of infective oral diseases

Ran-Yi Jin,Han-gyoul Cho,Seung-Ho Ohk 대한구강생물학회 2023 International Journal of Oral Biology Vol.48 No.2

The rapid detection of bacteria in the oral cavity, its species identification, and bacterial count determination are important to diagnose oral diseases caused by pathogenic bacteria. The existing clinical microbial diagnosis methods are time-consuming as they involve observing patients’ samples under a microscope or culturing and confirming bacteria using polymerase chain reaction (PCR) kits, making the process complex. Therefore, it is required to analyze the development status of substances and systems that can rapidly detect and analyze pathogenic microorganisms in the oral cavity. With research advancements, a close relationship between oral and systemic diseases has been identified, making it crucial to identify the changes in the oral cavity bacterial composition. Additionally, an early and accurate diagnosis is essential for better prognosis in periodontal disease. However, most periodontal diseasecausing pathogens are anaerobic bacteria, which are difficult to identify using conventional bacterial culture methods. Further, the existing PCR method takes a long time to detect and involves complicated stages. Therefore, to address these challenges, the concept of point-of-care (PoC) has emerged, leading to the study and implementation of various chair-side test methods. This study aims to investigate the different PoC diagnostic methods introduced thus far for identifying pathogenic microorganisms in the oral cavity. These are classified into three categories: 1) microbiological tests, 2) microchemical tests, and 3) genetic tests. The microbiological tests are used to determine the presence or absence of representative causative bacteria of periodontal diseases, such as A. actinomycetemcomitans , P. gingivalis , P. intermedia , and T. denticola . However, the quantitative analysis remains impossible, and detecting pathogens other than the specific ones is challenging. The microchemical tests determine the activity of inflammation or disease by measuring the levels of biomarkers present in the oral cavity. Although this diagnostic method is based on increase in the specific biomarkers proportional to inflammation or disease progression in the oral cavity, its commercialization is limited due to low sensitivity and specificity. The genetic tests are based on the concept that differences in disease vulnerability and treatment response are caused by the patient’s DNA predisposition. Specifically, the IL-1 gene is used in such tests. PoC diagnostic methods developed to date serve as supplementary diagnostic methods and tools for patient education, in addition to existing diagnostic methods, although they have limitations in diagnosing oral diseases alone. Research on various PoC test methods that can analyze and manage the oral cavity bacterial composition is expected to become more active, aligning with the shift from treatmentoriented to prevention-oriented approaches in healthcare.

혁신성향, 즐거움, 몰입이 메타버스 이용에 미치는 영향

이모란(Yi, Mo Ran),이해수(Hae-soo Lee) 한국광고홍보학회 2023 한국광고홍보학보 Vol.25 No.2

Sensory Based Feeding Intervention for Toddlers With Food Refusal: A Randomized Controlled Trial

Ah-Ran Kim,Jeong-Yi Kwon,Sook-Hee Yi,Eun-Hye Kim 대한재활의학회 2021 Annals of Rehabilitation Medicine Vol.45 No.5

Objective To investigate the effect of sensory-based feeding treatment for toddlers with food refusal compared with only providing nutrition education. Methods Thirty-two toddlers with food refusal were randomly assigned to an intervention group or the control group. Toddlers in the intervention group received the sensory-based feeding intervention and the duration was for 1 hour for 5 days per week for 4 weeks, and then 1 hour, once a week for 8 weeks. Subjects in both the intervention and control groups received nutritional education once every 4 weeks for 12 weeks. The participants were evaluated at their entry into the study and 12 weeks later based on height, weight, behavior at mealtime using the Behavioral Pediatrics Feeding Assessment Scale (BPFAS), and sensory processing ability using the Infant/Toddler Sensory Profile. Results Sixteen toddlers were included in each group. Two subjects in the intervention group and four toddlers in the control group were excluded from the final analysis. Significant improvements in child or parent subscales of the BPFAS were observed in the intervention group. In contrast, there were no significant improvements in any BPFAS scores in the control group. Conclusion Sensory-based feeding intervention was effective for improving mealtime behavior in toddlers with food refusal. Therefore, a sensory-based feeding intervention could be considered as an intervention approach to address feeding disorders in toddlers.

新羅 古墳出土 工藝品에 보이는 外來要素의 淵源

李松蘭(Yi Song-ran) 한국미술사학회 1994 美術史學硏究 Vol.- No.203

애기땅빈대의 열수 추출 및 에탄올 추출물의 항산화 활성 비교

강란이 ( Ran Yi Kang ),최학주 ( Hak Joo Choi ),박지원 ( Ji Won Bak ),심부용 ( Boo Yong Sim ),이해진 ( Hae Jin Lee ),김동희 ( Dong Hee Kim ) 대전대학교 한의학연구소 2014 혜화의학회지 Vol.23 No.1

Objectives : In this study, the antioxidant activities of the 80% ethanol and hot water extracts of Euphorbia supina Rafinesque were investigated. Methods : We measured total phenol contents, flavonoid contents, 2,2-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging assay, 2,2``-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) radical scavenging assay. The production of reactive oxygen species was measured in LPS-induced RAW 264.7 cells using flow cytometry system. Results : The content of phenol in the hot water extract was 65.529 ± 0.462 mg/g and 126.932 ± 1.894 mg/g in the 80% ethanol extract, and that of flavonoid in the hot water extract was 16.063 ± 0.471 mg/g and 29.159 ± 1.963 mg/g in the ethanol extract. The 80% ethanol extract also showed higher DPPH and ABTS radical scavenging activities (90.8±1.0% and 92.5±0.7%) than the hot water extract (81.5±0.5% and 91.5±0.2%). The production of reactive oxygen species(ROS) was reduced dose-dependently by 80% ethanol and hot water extract at concentration of 1, 10 and 100 ㎍/㎖of RAW 264.7 cells. Conclusion : According to these results, the 80% ethanol extract of Euphorbia supina Rafinesque has a good anti-oxidative effects than the hot water extract. Thus, the 80% ethanol extract of Euphorbia supina Rafinesque may serve as useful natural antioxidants.

Life-Style Habits in a High-Risk Area for Upper Gastrointestinal Cancers: a Population-Based Study from Shanxi, China

Cheng, Yi-Kun,Yao, Shang-Man,Xu, Yi-Ran,Niu, Run-Gui Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.9

Background: Cancer is a burden on humanity and ranks as a leading cause of morbidity and mortality in China. Shanxi province has its unique cancer patterns and the burden is increasing. In this study, we aimed to assess the pattern of dietary habits and life-style in Shanxi, a high-risk area for upper gastrointestinal cancers in China and further evaluate the trends in cancer incidence and mortality based on registered data. Materials and Methods: Data on lifestyle, diet, physical activity were obtained from the household health survey at Zhongyang from 2013 to 2015. Cancer diagnoses were reported to Shanxi Center for Disease Control and Prevention (SCDCP). Population-based cancer incidence data and mortality data of 2012 were collected from the SCDCP. All incidence and death rates were expressed per 100,000 populations. Univariate analysis was performed using the Chi-squared test or Fisher's exact test. Results: Overall, deficiencies in fresh fruits and vegetable food, and intake of hot food, salted food, or pickled food are serious problems in Shanxi, especially in rural areas. Upper gastrointestinal cancers were the most commonly diagnosed cancers, and the incidence in rural areas is higher than those in urban areas. Cervical cancer is the most common cancer for females. Moreover, the agespecific incidence exhibited an increased trend before 40 years old. Consistent with the previous literature, our epidemiological investigation results suggest that lifestyle, nutrition deficient, and infections were major risk factors for upper gastrointestinal cancers or cervical cancer in Shanxi. Facing a serious situation, we further explored defensible recommendations for the general public in order to promote changes in environments that support healthful eating and physical activity habits, to reduce cancer risk. Conclusions: Our results present the current cancer trends in Shanxi and its related etiologic risk factors and provide a theoretical basis to guide public health efforts to prevent and control cancers in the province.

Synthesis of g-C3N4/diatomite/MnO2 composites and their enhanced photo-catalytic activity driven by visible light

Chen Ran-Ran,Ren Qi-Fang,Liu Yu-Xin,Ding Yi,Zhu Hai-Tao,Xiong Chun-Yu,Jin Zhen,오원춘 한국세라믹학회 2021 한국세라믹학회지 Vol.58 No.5

Herein, a novel visible-light-responsive g-C 3 N 4 /diatomite/MnO 2 composite was successfully fabricated through a simple redox reaction method. The structure and morphology of the sample are mainly characterized by X-ray diff raction (XRD), photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), transmis- sion electron microscopy (TEM), and ultraviolet–visible spectroscopy (UV–Vis). In this paper, the photo-catalytic activity of the sample was evaluated by degradation RhB under visible-light irradiation. The results shown that, compared with g-C 3 N 4 /diatomite composite, MnO 2 , g-C 3 N 4 , diatomite, the prepared g-C 3 N 4 /diatomite/2.5%MnO 2 composite exhibits bet- ter photo-catalytic activity and stability. At the same time, the eff ect of diff erent MnO 2 additions on the photo-catalytic activity of the composite material was further analyzed. The results indicated that the g-C 3 N 4 /MnO 2 /diatomite composites exhibit highest photo-catalytic activity when the adding amount of MnO 2 reached 2.5%. The degradation rate of the g-C 3 N 4 / diatomite/2.5%MnO 2 is 93% after recycling for three times, showing good stability and reusability. Moreover, the mechanism of catalytic performance enhancement also has been discussed.