• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.15 no.1
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• pp.79-85
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• 2009

목적 : 브라운시쿼드는 대부분 척추손상과 수질외 척추 종양에서 주로 나타난다. 드물게 경추 디스크가 브라운시쿼드의 원인이 된다. 경추디스크에 의한 브라운시쿼드 증세의 수술후 물리치료 및 도수치료 결과를 보고하기 위함이다. 방법 : 50세 남자로써 브라운시쿼드 증세로 진단을 받고 수술후 좌측 팔과 다리에 운동신경에 의한 마비증세가 있었으며(팔>다리), 우측으로 감각과 온도감각이 저하된 경우이다(팔>다리). 측정방법은 통증지수(VAS), 근력(Distal PowerTracII$^{TM}$ test), 지구력(Ergometer) 측정과 심리상태(설문)를 치료전과 후를 비교하였다. 물리치료에서는 기능적 전기자극 치료와 도수치료 및 운동치료 방법을 실시하였다. 도수치료는 통증완화와 근력강화를 위한 MET, MFR, Mobilization 등을 실시하였으며, 운동은 슬링시스템 등을 이용한 운동과 견관절의 불안정을 위해 안정화운동을 실시하였다. 결과 : 이 케이스는 수술후 이상 징후가 척수압박으로 인하여 보다 넓게 통증이 나타났으며, 운동 및 감각신경이 둔해지고 온도에 대한 감각이 반대편 결손으로 나타났으며, 좌측 어깨, 팔 견갑부의 근육 마비와 우측의 감각이 떨어진 현상이 나타났다. 물리치료 후 단기목표와 장기목표에 있어서 통증과 운동 및 감각 기능이 회복되어 각각 팔 통증에서는 VAS 8 ${\rightarrow}$ 1, 상지 하지의 운동기능은 Trace ${\rightarrow}$ Good 로 평가 회복되었으며, 근력측정에서 모두 유의한 차이를 보였다. 모든 치료과정 결과에서 심리적 상태의 설문에서도 높은 점수를 얻어 긍정적 신뢰가 높아 진 것으로 나타났다. 검사결과 다리의 근력이 증가는 걷기 운동 및 에르고메터의 지구력 및 균형이 레벨1의 10분 수행능력이 레벨 20에서 30분 수행능력으로 향상되어 일상적인 활동이 가능해졌다. 결론 : 예상하지 못했던 수술 후유증(side effects)에 대한 치료과정이 환자의 심리에 심각한 부정적인 생각이 신체의 기능과 감정의 손상에 영향을 미치기 때문에 체계적이고 장기적인 치료 과정에서 기능적 향상과 더불어 정신적인 심리의 정서 안정이 매우 필요하다고 사료된다.

• Journal of KIISE:Information Networking
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• v.30 no.1
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• pp.9-16
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• 2003

In this paper, we propose a method for supporting VCR operations in a patching based multicast VOD system. Random access, pause and resume operations are supported in our system, and the channel and session scheduling algorithms for the VCR operations are proposed. When it is necessary to join a sharable multicast channel in the admission control for the VCR operations, the patching technique, which shares an on-going regular channel and allocates a new patching channel for the missing data, is used. Therefore, unlike the previous approach that allocates an excessive number of I-channels, service latency is minimized and channel usage is optimized in our system. Moreover buffered data. which is saved in disk during patching, is reused to prevent unnecessary patching channel allocation. For this. the patching management information is extended and a buffed data management scheme is proposed. In our system, the First-Come-First-Served scheduling is used to inform clients the service latency for the VCR operations immediately.

• Journal of fish pathology
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• v.11 no.1
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• pp.77-81
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• 1998

By standardized method, Bacillus subtilis BGA, Bacillus cereus var. mycoides ATCC 11778, and Micrococcus luteus ATCC 9341 were seeded on the muller hinton agar (Difco) plate, and pH was adjusted to 6.0, 7.2, and 8.0. Five agar plates, B. subtilis (pH 6.0), B. cereus (pH 6.0), B. subtilis (pH 7.2), B. subtilis (pH 8.0), and M. luteus (pH 8.0), were employed as test plates of modified EEC 4-plate method. Oxytetracycline (OTC) with a diet was orally administered to flounder, Paralichthys olivaceus, at 100 mg/kg once a day. After oral administration, modified EEC 4-plate method by the three screening test using muscle-direct, extraction-disk and direct-disk methods was conducted for 3 fish at 1, 3, 5, 10, 15, 20, 25 and 30 days. Muscle-direct treatment of B. subtilis (pH 6.0) was found to be dubious positive (${\pm}$) at the 1st day after the administration; thereafter, it was found to be negative to the last day of the experiment. Extraction-disk and direct-disk treatment of B. subtilis (pH 6.0) were found to be negative from the 1st day to the last day after the administration. B. subtilis (pH 7.2), B. subtilis (pH 8.0), and M. luteus (pH 8.0) by the three screening tests, were found to be negative all the way after the administration. On the other hand, B. cereus (pH 6.0) by the three screening tests was clearly found to be positive for the first 15 days after the administration, and then muscle-direct and direct-disk treatment of B. cereus (pH 6.0) were found to be dubious positive at 20th days after the administration. However extraction-disk treatment of B. cereus (pH 6.0) was clearly found to be negative at the same stage; thereafter, the three screening tests of B. cereus (pH 6.0) were found negative to the last of the experiment. These findings showed that to have equal sensitivity to those determination for the residual detection of OTC, and also confirmed that B. cereus was effective test organism for the monitoring of OTC.

• The Journal of Korean Academy of Prosthodontics
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• v.50 no.4
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• pp.285-291
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• 2012

Purpose: This study was conducted to identify the surface characteristics of titanium discs coated with MS275/PLGA by electrospray and which is effective to mesenchymal stem cell proliferation. Materials and methods: We used anodized surface coated with PLGA as a control group and anodized surface coated with MS275 $0.5{\mu}M$, $1{\mu}M$, $1.5{\mu}M$ as test groups. To examine that the coating particles are nanometer sized, FE-SEM was used and AFM was utilized to determine the difference of coating surface roughness. We checked the mesenchymal stem cell proliferation by using MTT assay on $1^{st}$, $4^{th}$, $7^{th}$ days. Results: There was no significant difference between control groups and test groups in AFM results (P>.05). In MTT assay results, mesenchymal stem cell proliferation was increased with time, at $7^{th}$ day, cell viability on discs coated with $1.5{\mu}M$ MS275 was significantly higher than control group (P<.05). As SEM showed, the number of cells on all discs was increased and the morphology of cell attachment was also wider and closer with time. Conclusion: Titanium surface coated with MS275/PLGA showed significantly higher cell proliferation and the more density of MS275 was dispersed on titanium discs, the faster cells grew.

• Journal of the Korean Society for Nondestructive Testing
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• v.20 no.3
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• pp.213-220
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• 2000

The method of photoelasticity allows one to obtain principal stress differences and principal stress directions in a photoelastic model. In the classical approach, the photoelastic parameters are measured manually point by point. The previous methods require much time and skill in the identification and measurement of photoelastic data. Fringe phase shifting method has been recently developed and widely used to measure and analyze fringe data in photo-mechanics. This paper presents the test results of photoelastic fringe phase shifting technique for the stress analysis of a circular disk under compression and an edge-cracked plate subjected to tensile load. The technique used here requires four phase stepped photoelastic images obtained from a circular polariscope by rotating the analyzer at $0^{\circ}$, $45^{\circ}$, $90^{\circ}$ and $135^{\circ}$. Experimental results are compared with those or FEM. Good agreement between the results can be observed. However, some error may be included if the technique is used to general direction which is not parallel to isoclinic fringe.

• Pediatric Infection and Vaccine
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• v.4 no.2
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• pp.218-224
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• 1997

Purpose: The antimicrobial resistance of S. pneumoniae has encountered with increasing frequency from around the world. In our country, penicillin resistant strains of S. penumococci are rapidly increasing. It has been known that colonized pneumococci in upper respiratory tract cause sinisitis, otitis media, meningitis and pneumonia. We tried to reveal the colonization rate of pneumonocci in upper respiratory tract, their antimicrobial resistance and DNA fingerprinting pattern in normal children. Methods: We got specimens from 117 children of day-care center in Seoul through oropharyngeal swab. After incubation on BAP, optochin test and slide latex agglutination test were used for identification. Antimicobial susceptibility test to penicillin, vancomycin, erythromycin and TMP-SMZ was done with disk diffusion method. Penicillin MIC was gotten through the broth microdilution method. Genotyping of 45 pneumococci was done by rep-PCR using REP1R-Dt and REP2-Dt primer. Results: The carriage rate of pneumococci in the day-care center children was 38%(45/117). The resistance of penicillin, erhthromycin, TMP/SMZ, vancomycin by the disk diffusion method are 89%, 91%, 64% and 0%, respectively. 64% of the isolates showed multiple resistance. 7 types of DNA fingerprinting were gotten and 78% of isolates belonged to three types. Conclusion: We found that the antimicrobial resistance of children attending the day-care center in Seoul was much higher than expected. We assumed that this might be due to their easy and frequent exposure to antimicrobial agents and crowded day-care center environment.

• Korean Journal of Clinical Laboratory Science
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• v.51 no.2
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• pp.214-220
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• 2019

Hwangryunhaedok-tang (HT) is prescribed in oriental medicine to treat inflammation-related diseases. This study examined the anti-bacterial effect to select the index components of Traditional Chinese Medicine (TCM) HT. The disc diffusion method and minimum inhibition concentrations (MIC) tests were conducted to measure the antibacterial activity of HT. The strains were Staphylococcus aureus ATCC 25923 and Escherichia coli 23724. Berberine and geniposide were selected as the index components of HT and were analyzed quantitatively by high-performance liquid chromatography (HPLC). As a result, the inhibition ring was formed at $11.7{\pm}1.3mm$ and $8.7{\pm}0.7mm$ at HT 20 mg and 10 mg on S.aureus ATCC 25923, respectively; and $8.0{\pm}0.0mm$ at HT 20 mg on E.coli ATCC 23724. The MIC were 31.25 mg/mL in S.aureus ATCC 25923 and 125.0 mg/mL in E.coli ATCC 23724. In quantitative analysis for standardization, HT contained 16.55 mg/g of berberine and 81.85 mg/g of geniposide. Overall, when antibiotics are developed using natural products, they may reduce the side effects and inhibit resistant bacteria. If research on HT continuously proceeds, positive developments are expected to be made in oriental medicine as well as in various other industries.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.2
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• pp.212-220
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• 2020

This study examines the effects on isometric lumbar extension strength, dynamic balance ability, and range of motion, after administering 8 weeks SEBT exercise (dynamic balance exercise) and Lumbar Stabilizing exercise, to open laser lumbar microdiscectomy patients. Totally, 14 patients who underwent preservation treatment for 6 weeks after undergoing open laser lumbar microdiscectomy, were enrolled for the study. Patients were randomly assigned to the Lumbar Stabilizing Exercise Group (LSG, n=7) and SEBT Exercise + Lumbar Stabilizing Exercise Group (SGLS, n=7). Results indicate that isometric lumbar extension strength ratio significantly decreases after 8 weeks rehabilitation exercise in both the LSG (p=0.007) as well as SLSG (p=0.024) groups. Normalized reach distance of the three directions in the Y-balance test to examine the dynamic balance capability showed a significant increase in both groups. The dynamic balance capability showed significant increase to the left (LSG, p=0.010; SLSG, p=0.002) and right (LSG, p=0.002; SLSG, p=0.002). Moreover, significant increase was also obtained in the range of joint operation, in both LSG (p=0.006) and SLSG (p=0.017) groups. These results indicate that both groups of rehabilitation exercise achieve positive outcomes on the isometric lumbar extension strength, range of motion, and dynamic balance ability. However, some results suggest that the SEBT program is likely to have a better efficacy.

• Journal of Veterinary Clinics
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• v.21 no.1
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• pp.15-19
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• 2004

The emergence of bacterial resistance to antibiotics during therapy is a matter of great problem in clinical medicine. This may be because many veterinarians have used inappropriate antibiotics without bacteriological culture. Therefore, the purpose of this study is to determine isolation of anaerobic bacteria as pathogens from veterinary clinical specimens as well as susceptibility pattern for choosing antibiotics. Various anaerobic bacteria were isolated from clinical specimens of dogs, cats, rabbits at Veterinary Medical Teaching Hospital of Seoul National University from May 2001 to October 2002. The total number of isolated anaerobic bacteria was 13 isolates; Bacteroides spp. (3 isolates), Fusobacterium spp. (2 isolates), Peptostreptococcus spp. (2 isolates), Porphyromonas gingivalis (2 isolates), Prevotella spp. (3 isolates), and Propionibacterium acnes (1 isolate). For evaluating the antibiotic susceptibility patterns of the isolates disk diffusion method was used. All isolates were susceptable to all tested antibiotics except only one Fusobacterium varium was resistant to norfloxacin.

• Journal of the Korean Society for Nondestructive Testing
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• v.36 no.4
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• pp.300-307
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• 2016

The faults in railway vehicle components may result in either the stoppage of the service and the derailment of the vehicle. Therefore, it is important to diagnose and monitor the main components of a railway vehicle. The use of temperature is one of the basic methods for the diagnosis of abnormal conditions in the rotational components of a railway vehicle, such as bearings, reduction gears, brake discs, wheels and traction motors. In the present study, the diagnose of the rotational components using infrared thermography and a pattern recognition technique was carried out and a field test was performed. The results show that this method of diagnosis using infrared thermography can be used to identify abnormal conditions in rotational components of a railway vehicle.