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Choi, Dukhyun,Choi, Min-Yeol,Choi, Won Mook,Shin, Hyeon-Jin,Park, Hyun-Kyu,Seo, Ju-Seok,Park, Jongbong,Yoon, Seon-Mi,Chae, Seung Jin,Lee, Young Hee,Kim, Sang-Woo,Choi, Jae-Young,Lee, Sang Yoon,Kim, Jo WILEY-VCH Verlag 2010 ADVANCED MATERIALS Vol.22 No.19
<B>Graphic Abstract</B> <P>The cover shows an image of fully rollable transparent nanogenerators synthesized using chemical vapor deposition grown large-scale graphene sheets as transparent electrodes and piezoelectric ZnO nanorod arrays. Sang-Woo Kim, Jae-Young Choi, and co-workers report on p. 2187 the electrical and structural stability of the nanogenerators, with excellent charge scavenging performance under external mechanical loads such as bending and rolling. This study shows that graphene-based nanogenerators are very promising for self-powered rollable transparent device applications. <img src='wiley_img_2010/09359648-2010-22-19-ADMA201090066-content.gif' alt='wiley_img_2010/09359648-2010-22-19-ADMA201090066-content'> </P>
프로그램화 된 신체운동이 ADHD 아동의 주의산만행동과 과잉행동에 미치는 효과
최재원(Jae Won Choi),강경두(Kyoung Doo Kang),정혜연(Hye Yeon Jung) 한국사회체육학회 2012 한국사회체육학회지 Vol.0 No.47
The purpose of this study is to deeply analyze a change of the programmed physical exercise in attentiondeficient behavior and hyperactivity of children with ADHD, through the single-subject research design method. The research subjects were 4 elementary school students who are under being cured due to being judged to be ADHD at Child Psychiatric Clinic for C University Hospital where is located in Seoul at that time of beginning experiment in order to be conformed with the objective of research. For visual observation, the attention-deficient behavior was used the frequency-typed case sampling method(Shin So-yeon, Park Jaeguk, Kim Yeong-mi, Lee Hwa-eun, 2007). Observation of hyperactivity was used the contents, which Carlson and Hotfield(1991) defined, by referring to the contents by Mun Jae-gyeong(1998). The following are the results that were elicited through the research procedure of this study. First, the programmed physical exercise was indicated to reduce attention-deficient behavior in children with ADHD. Second, the programmed physical exercise was indicated to reduce hyperactivity in children with ADHD.
말의 피부사상균증 및 피부 mycoflora에 관한 연구
최원필,이헌준,조길제,하태영,Choi, Won-pil,Lee, Hun-jun,Cho, Gil-jae,Ha, Tae-young 대한수의학회 1996 大韓獸醫學會誌 Vol.36 No.2
This study was carried out to determine the causative agent of dermatophytosis in 7 horses, and to examine the skin mycofloras on 84 healthy and 7 diseased horses which were derived from Jae-ju and Kyonggi, Korea in 1994~1995. Specimens of hair and scale were collected from skin lesions(or normal skins) and inoculated directly on potato dextrose agar and mycobiotic agar. These agar plates were incubated at $25^{\circ}C$ for 2 weeks. Growing fungi were isolated and identified by the morphological and nutritional characteristics. Lesions were found on the hind legs of an infected horses and each lesion was round or oval(1~4 cm) in shape accompanied by severe itching. The causative agent of the 7 equine dermatophytosis was identified as Trichophyton equinum. The skin mycofloras were Penicillium(69.0%), Aspergillus(63.2%), Cladosporium(51.7%), Fusarium(31.0%), Mucor(28.7%), Absidia(18.4%), Alternaria(17.2%), Acremonium(11.5%), Paecilomyces and Phycomyces(6.9%), Rhizopus(5.6%), Trichoderma(4.6%), Scopulariopsis and Trichophyton(3.5%), Beauveria(2.3%), Tritiracheum, Sporothrix, Curvularla, Aureobasidium and Chaetomium(1.2%), and Yeast(27.6%).
상수원수 수질변화에 따른 전오존 처리효과 및 경제성 평가
최동훈 ( Dong Hoon Choi ),박진식 ( Jin Sik Park ),문추연 ( Choo Yeun Moon ),이재용 ( Jae Yong Lee ),유동춘 ( Dong Choon Ryu ),장성호 ( Seong Ho Jang ),권기원 ( Ki Won Kwon ),이수애 ( Soo Ae Lee ) 한국환경과학회 2013 한국환경과학회지 Vol.22 No.4
This study, changes in raw water quality is to indicate on the efficiency of ozone treatment of each pollutant as compared to derive the appropriate operating measures. The appropriate selection for injection rate of pre-ozone and did not inject pre-ozone assess changes in the water. When good water quality, you not injected of pre-ozone to evaluate the economic efficiency of electricity and put the most cost-effective ozone concentration were evaluated. Evaluation remove organic matter and chlorophyll-a concentration level in experiments with each factor of the water DOC> 2.5㎎ / L, THMFP> 70㎍ / L, Chl-a> 30㎎/㎥or less constant process, if you do not need to put pre-ozone showed little impact. It also does not put you in pre-ozone appropriate produce enough power rate savings was calculated as approximately 90 million won. Ability to remove organic materials and the ability to produce disinfection byproducts, and cost-effective decisions by considering the concentration of injection if pre-ozone 1 mg/L was investigated by the appropriate concentration of ozone injection.
( Sang-Cheol Bae ),( Jin-Hye Cha ),( Jung-Yoon Choe ),( Sung Jae Choi ),( Soo-Kyung Cho ),( Won-Tae Chung ),( Chung-Il Joung ),( Young-Ok Jung ),( Young Mo Kang ),( Dong-Wook Kim ),( Jinseok Kim ),( Y 대한류마티스학회 2018 대한류마티스학회지 Vol.25 No.2
Objective. Productivity loss was compared by 3-stage of disease activity and associations between higher disease activity and high productivity loss were identified. Methods. Data were extracted from Rheumatoid Arthritis (RA) Patient-reported Outcomes Research, which enrolled 2,000 RA patients (>20-year) on disease-modifying-antirheumatic-drugs (DMARDs) (≥ 6-month) from December 2012 to June 2013. This included 1,457 RA patients with the disease activity score (DAS-28-ESR) in their medical charts. Productivity loss in time and indirect cost was estimated using The World Health Organization Health and Work Performance Questionnaire (HPQ). Baseline characteristics and productivity loss outcomes were compared according to DAS-28-ESR groups. Results. 84.4% were females, 54.2% had low DAS-28-ESR (<3.2), and 38.2% and 7.6% had moderate (3.2∼5.1) and high DAS-28-ESR (>5.1). Patients with moderate to high DAS-28-ESR had higher lost productivity time (LPT) and monthly costs of LPT than those with low DAS-28-ESR (time in hours: 110.0±58.4 vs. 132.4±57.2 vs. 71.5±52.0, p<0.0001; monthly costs of LPT in 1,000 Korean won: 1,097±607 vs. 1,302±554 vs. 741±531, p<0.0001). Multiple regression analyses revealed significant associations with high LPT in high (adjusted odds ratio [OR]=3.87, 95% confidence interval [CI]: 2.18∼6.87) and moderate DAS-28-ESR (adjusted OR=1.88, 95% CI: 1.41∼2.52) compared to low DAS-28-ESR. In addition, positive associations with high monthly costs of LPT were observed in high (adjusted OR=3.45, 95% CI: 1.98∼5.99) and moderate DAS-28-ESR (adjusted OR=1.93, 95% CI: 1.43∼2.54) compared to low DAS-28-ESR. Conclusion. Timely therapeutic strategies should be taken into consideration given that the RA patients with moderate to high DAS-28-ESR showed strong associations with high productivity loss for effective management of RA. (J Rheum Dis 2018;25:122-130)
Characterization of carbonaceous particulate matter emitted from marine diesel engine
Jae-Hyuk Choi,조익순,이장세,박상균,Won-Ju Lee,Hwajin Kim,장혜정,김진영,Seongcheol Jeong,Seul-Hyun Park 대한기계학회 2016 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.30 No.5
In an effort to aid the Korean ship-building industry to effectively respond to the upcoming environmental regulations, a series of experimental campaigns to characterize carbonaceous Particulate matters (PMs) emitted from a cruising marine ship have been carried out. To this end, the carbonaceous PMs emitted from two-stroke marine-diesel engines burning Bunker B (Low residual fuel oil, LRFO 3%) were sampled on-board at various locations: 1) After the turbo charger (TC), 2) before the economizer (ECO), 3) after the economizer, and 4) in the funnel of the chimney. Sampled carbonaceous PM particles were then analyzed using a High-resolution transmission electron microscopy (HRTEM) and Raman spectroscopy. Results obtained from the analysis of HRTEM images and Raman spectra indicate that carbonaceous PMs are mainly fractionated into Black carbon (BC) and Organic carbon (OC), respectively and the each fraction of sampled carbonaceous PMs varies with engine operation conditions and exhaust gas temperatures at the sampling location. The present work is anticipated to provide a useful set of information for characterizing carbonaceous PMs emitted from marine diesel engines.
A case of Bowen’s disease of the nail bed
( Jae-kyung Lee ),( Jin-hyup Lee ),( Dong-kyun Hong ),( Kyung-duck Park ),( Chong-won Choi ),( Young Lee ),( Jeung-hoon Lee ),( Young-joon Seo ) 대한피부과학회 2019 대한피부과학회 학술발표대회집 Vol.71 No.1
Bowen’s disease is a squamous cell carcinoma in-situ that can occur anywhere on the body but rarely on a nail unit. The lesion on the nail bed can appear as hyperkeratotic verrucous nodules, erythematous plaque, or brown patches, often being misdiagnosed as other benign nail diseases thus delaying early prompt treatment. A 90-year-old female presented with a chronically progressive Rt. 5th nail bed dystrophy with persisting pain that occurred 3 years ago. Despite the treatments for verruca and onychomycosis, the lesion failed to improve. The lesion initially began as an irregular brown patch with oozing on the proximal side of the Rt. 5th fingernail. Its progression to the entire nail unit eventually led to the removal of her nail 2 years after onset of the lesion. The patient was then referred to our hospital for treatment with Mohs micrographic surgery and a part of her nail bed lesion was examined. Histology showed full-thickness high-grade atypia in disarray with the intact basal cell layer, which was consistent with Bowen’s disease. Since the operation, her symptoms have subsided with no evidence of recurrences. This case demonstrates that biopsies of chronic, intractable nail lesions are necessary to allow an accurate diagnosis with appropriate prompt treatment.
Easy Diagnosis of Asthma: Computer-Assisted, Symptom-Based Diagnosis
Choi, Byoung Whui,Yoo, Kwang-Ha,Jeong, Jae-Won,Yoon, Ho Joo,Kim, Sang-Heon,Park, Yong-Mean,Kim, Wo-Kyung,Oh, Jae-Won,Rha, Yeong-Ho,Pyun, Bok-Yang,Chang, Suk-Il,Moon, Hee-Bom,Kim, You-Young,Cho, Sang-H KOREAN ACADEMY OF MEDICAL SCIENCE 2007 JOURNAL OF KOREAN MEDICAL SCIENCE Vol.22 No.5
<P>Diagnosis of asthma is often challenging in primary-care physicians due to lack of tools measuring airway obstruction and variability. Symptom-based diagnosis of asthma utilizing objective diagnostic parameters and appropriate software would be useful in clinical practice. A total of 302 adult patients with respiratory symptoms responded to a questionnaire regarding asthma symptoms and provoking factors. Questions were asked and recorded by physicians into a computer program. A definite diagnosis of asthma was made based on a positive response to methacholine bronchial provocation or bronchodilator response (BDR) testing. Multivariate logistic regression analysis was used to evaluate the significance of questionnaire responses in terms of discriminating asthmatics. Asthmatic patients showed higher total symptom scores than non-asthmatics (mean 5.93 vs. 4.93; <I>p</I><0.01). Multivariate logistic regression analysis identified that response to questions concerning the following significantly discriminated asthmatics; wheezing with dyspnea, which is aggravated at night, and by exercise, cold air, and upper respiratory infection. Moreover, the presence of these symptoms was found to agree significantly with definite diagnosis of asthma (by kappa statistics). Receiver-operating characteristic curve analysis revealed that the diagnostic accuracy of symptom-based diagnosis was high with an area under the curve of 0.647±0.033. Using a computer-assisted symptom-based diagnosis program, it is possible to increase the accuracy of diagnosing asthma in general practice, when the facilities required to evaluate airway hyperresponsiveness or BDR are unavailable.</P>