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Yoon,Myong-O,Park,Jin-Kook,Kim,Choong-Ik,Ryou,Hong-Sun,Kim,Jin-Gon,Kim,Myung-Bae,Choi,Jun-Seok,Kim,Kwang-Il 한국화재소방학회 1997 한국화재소방학회 학술대회 논문집 Vol.1997 No.-
Fire characteristics of a typical apartment building in Korea was studied through full scale experiment and zone model simulation. The fire was ignited at the living room and allowed to spread to other parts of a single unit in a five storied apartment building. Various data including temperatures, species concentrations, and images were collected in the experiment. A zone model(CFAST) was used to analyze the same apartment building that represents the average households in Korea. The results were compared with a full scale experiments. While CFAST allows one compartment involved with fire, the experiment allowed the fire to spread to other compartments. Therefore, the comparison between experimental data and Zone-Model data is valid until the living-room fire spread to other parts of the apartment. Flashover occurred at approximately 380 seconds in a fire experiment, and at approximately 420 seconds in Zone-Model. Based on all of data between experimental data and Zone-Model data, it is concluded that the safe escape time is about 250 seconds.
불안정한 지지면에서의 평형 훈련이 편마비 환자의 균형 능력에 미치는 영향
배수찬,김근조,윤홍일 대한정형물리치료학회 2001 대한정형도수물리치료학회지 Vol.7 No.2
The purpose of this study was to investigate the balancing training effect on weight bearing ratio and postural sway on the unstable surface for the CVA patients with balance disability. The inclusion criteria were walking independently 20m distances. Eighteen subjects, 4 with right and 14 with left hemiplegic patients were participated in this study. The range of age was from 35 to 75 and the duration from onset time was from 1 to 38 months. The intervention program including balancing training that they were introduced for 10 minutes every other day during 12 weeks to experimental group, and general therapeutic exercise to control group. The result of this study were as following: 1. The balancing training on the unstable surface showed that the postural sway of left/right distribution would appear more effective on sitting with eyes opened. 2. The balancing training on the unstable surface showed that the postural sway of forward/rear distribution, left/right distribution and distance would appear more effective on standing with eyes opened. 3. The balancing training on unstable surface would increase more effective on the weight-bearing ratio of left/right difference and frequency. 4. The balancing training on unstable surface was statistical significant on the postural sway of left/right distribution and area in experimental group, and it was statistical significant on the postural sway of forward/rear distribution, left/right distribution and distance in control group, too.
RT-LAMP를 이용한 콩황화일반모자이크바이러스의 진단
배대현, 이영훈, 김봉섭, 윤영남, 강범규, 최만수, 구성철, 김현태, 윤홍태, 이수헌, 백인열 忠北大學校 農業科學硏究所 2014 農業科學硏究 Vol.30 No.2
Soybean yellow common mosaic virus (SYCMV) has been recently reported, it has been occurred a lot with Soybean mosaic virus (SMV) and Soybean yellow mottle mosaic virus (SYMMV) in soybean field. SYCMV belongs to genus of Sobemovirus and induced viral symptoms with yellowing, mottle and mosaic. A reverse transcription loop-mediated isothermal amplification (RT-LAMP) method allowed one-step detection of gene amplification by simple procedure and needed only a simple incubator for isothermal template. This RT-LAMP method allowed direct detection of RNA from virus-infected plants without thermal cycling and gel electrophoresis. In this study, we designed RT-LAMP primers named SYCML-F3/B3/FIP/BIP from coat protein gene sequence of SYCMV. After the reaction of RTLAMP, products were identified by electrophoresis and with the detective fluorescent dye, SYBR Green I. under daylight and UV light. Optimal reaction condition was at 63 for 60min and the primers of RTLAMP showed the specificity for only SYCMV tested in this study.
반도체 및 LCD photo 공정에서 발생되는 폐chemical의 재자원화 기술개발
이윤배,유홍진 순천향대학교 부설 산업기술연구소 2001 순천향 산업기술연구소논문집 Vol.7 No.2
In this study, a design approach was suggested to the recovery and recycling of waste chemicals produced from semiconductor and LCD photo process. For this purpose, the process simulation of a distillation tower was performed and basic engineering data for the separation of BDG & MEA form waste chemicals were obtained. Also, composition of waste chemicals was studied by Karl-Fischer water content analyzer and GC-MS.
S.D. Rats를 이용 1, 1-Dichloro-1-fluoroethane의 아민성 흡입독성 연구
김현영,이성배,임철홍,김철우,점용현,한정희,전윤석,최수영,강대봉,이용묵 한국환경독성학회 2002 환경독성보건학회지 Vol.17 No.1
There were no specific effects for test materials on Sprague-Dawley (S.D.) rats in clinical symptoms, amounts of food intakes, weight changes, laboratory findings, and pathology after whole body l, l-Dichloro-1 -fluoroethane (used as coolant, metal cleaner and solvents) exposure(0, 1,500, 3,000, and 6,000 ppm) for 13 weeks (6 hour/day, 5 days/week). However, the loss of capillary vessels in eyeball (pupil) was observed in a female rat among 6,000 ppm group. Though there was a tendency for MCHC (Mean Corpuscular Hemoglobin Concentration) in rat to be decreased (p<0.05), it was not regarded as abnormal because the values were within normal limits. In asthma-stimulation related evaluations, there was also a tendency for inflammatory cell counts in bronchoalveolar lavages to be increased. But it had no statistical significance, and also no dependency on sex and the exposed concentration. Based on this result, the non observed effect level (NOEL) induced by 1, 1-Dichloro-l -fluoroethene inhalation was evaluated in groups with 3,000 ppm below (S .D. Rats, 13 weeks). Finally, it was concluded that the short term exposal of 1, 1-Dichloro-l-fluoroethane is not considered as a asthma stimulant by inhalation despite of some study limitations such as test animals use and short-term exposure .
콘크리트 표면성능개선에 의한 중성화억제방안에 관한 실험적 연구
강석표,김경덕,이병기,길배수,홍성윤,김무한 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1(구조계)
Penetration of concrete by aggressive materials in solution may cause an undesirable effect on concrete durability, for instance when Ca(OH)₂ is being leached out or an attack by aggressive liquids takes place. In particular, carbonation occurs in concrete because the calcium bearing phases present are easily attacked by carbon dioxide and converted to calcium carbonate from surface of concrete, It has been known that the durability of reinforced concrete structure is concerned with the surface performance of concrete which affects on the carbonation occurred by invasion of CO₂ gas and the corrosion of steel bar occurred by O₂ In this paper, the effects of carbonation resistance by improvement of surface performance for concrete are investigated according to the accelerated carbonation test. It is believed that the carbonation resistance of concrete has been significantly improved by the application of penetrative hardening agent due to the formation of a dense surface.
조성환,손화영,김혜성,최종윤,류시윤,박배근,윤원기,홍성혁,김덕환 충남대학교 수의과대학 동물의과학연구소 2002 動物醫科學硏究誌 Vol.10 No.-
Pilomatricoma was histopathologically diagnosed in a 2.5-year-old male Alaskan malamute. The patient was referred to Chungnam National University, Veterinary Medical Teaching Hospital with solitary, firm and well-circumscribed mass at shoulder. Grossly, the mass was dome shaped to tumor like and 10 x 8 x 5㎝ in size. Some lesions had gritty or bony consistency and was chalky when sectioned Histopathologic feature included mumerous clusters of tightly arranged, basaloid cells with evenly distributed chromatin and ghost cells were characterized by a central unstained zone. The ghost cells often become calcified and osseous metaplasia was also present.
Deformation Behavior of Reinforced Concrete Members with Prefabricated Fiber Laminate Composites
Hong, Young Gyun,Hong, Gi Sub,Kang, Jae Kyu,Hwang, Kyu Hong,Yoon, Jeong Bae Trans Tech Publications, Ltd. 2007 Key Engineering Materials Vol.345 No.-
<P>The innovative method based on prefabricated fiber laminate composites bonded to lightweight precast panel was applied for quality control of RC strengthening members. The experimental investigations for this method were presented for flexural member. Three different groups such as control group without strengthening, conventional fiber bonding group and innovated PFLC group bonded to precast panel. Tested results showed good or better capacities comparing to conventional strengthening method for flexural members. This investigation indicate that good enhancement with respect to quality control and reliability can be possible by the installation and epoxy injection with prefabricated panel using fiber laminate composites.</P>
Yoon, Hong In,Cha, Jihye,Keum, Ki Chang,Lee, Ha Yoon,Nam, Eun Ji,Kim, Sang Wun,Kim, Sunghoon,Kim, Young Tae,Kim, Gwi Eon,Kim, Yong Bae BioMed Central 2015 Radiation oncology Vol.10 No.-
<P><B>Purpose</B></P><P>To review the clinical outcomes of extended-field radiation therapy (EFRT) and to analyze prognostic factors significant for survival in patients receiving EFRT for uterine cervical carcinoma with para-aortic node (PAN) metastasis.</P><P><B>Patients and methods</B></P><P>We retrospectively reviewed 90 patients with stage IB-IVA cervical cancer and PAN metastasis between 1987 and 2012. Median age was 50 (range, 24–77). Patients received median 70.2 Gy (range, 56–93) to point A and median 50.4 Gy (range, 45–60.4) to PAN over median 69 elapsed days (range, 43–182). Forty-six patients (51.1%) received concurrent chemotherapy. Survival was calculated using the Kaplan–Meier method. We analyzed prognostic factors for overall actuarial survival (OS) and progression-free survival (PFS) using a Cox regression method.</P><P><B>Results</B></P><P>The median follow-up period for surviving patients was 55 months (range, 3–252). Seventy patients (77.8%) had complete remission. Forty-six patients experienced treatment failure as follows: 11 patients (12.2%) as local recurrence, 19 (21%) as regional recurrence and 33 (36.7%) as distant metastasis. The 5-yr OS and PFS were 62.6% and 43.9%, respectively. Treatment response was the only statistically independent prognostic factors for OS (p= 0.04) and PFS (p< 0.001) on multivariate analysis. Grade 3 or 4 hematologic gastrointestinal and urogenital toxicities were observed in about 10% of patients.</P><P><B>Conclusions</B></P><P>Our institutional experiences showed that EFRT was an effective treatment for cervical cancer patients with PAN metastasis. The addition of chemotherapy to EFRT seems to have uncertain survival benefit with higher hematologic toxicity.</P><P><B>Electronic supplementary material</B></P><P>The online version of this article (doi:10.1186/s13014-014-0320-5) contains supplementary material, which is available to authorized users.</P>