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착용형 소변 수집기 개발을 위한 휠체어와 소변백의 부착 방법 연구
박준영(Park, Juneyoung),김기현(Kim, Kihyeon),박상수(Park, Sangsoo),박찬호(Park, Chanho) 표준인증안전학회 2021 표준인증안전학회지 Vol.11 No.4
소변의 배출 욕구를 느끼지 못하여 무의식중에 방광을 비우는 중증 요실금은 중추 혹은 말초 신경계의 손상에의한 신경인성 방광과 함께 노화와 치매로 인한 인지기능 저하, 의식 장애 등의 원인으로 발생한다. 중증 요실금환자에서 대부분의 환자는 기저귀로 배뇨를 처리하며, 일부 활동이 가능한 환자의 경우 간헐적으로 도관을 삽입하여 배뇨하는 방법을 이용하지만 아직까지도 도관 삽입의 통증 및 이물감, 불편함, 요로감염의 위험 등은 해결되지 못한 상태이다. 도관 삽입의 문제점을 개선하기 위한 콘돔 카테터를 이용한 소변 처리 방법이 개발되어 상품화되었으나 환자의 불편함과 감염의 위험을 크게 개선시키지는 못하였다. 본 논문에서는 환자의 요도대신 음경 주위에 팬티에 부착되는 소변 수집기와 소변 튜브, 그리고 휠체어에 부착하여 소변을 일시적으로 저장할 수 있는 소변백으로 구성된 착용형 소변 처리 시스템에서 소변백을 휠체어에 부착하는 세 가지 방법들에 대한 연구 결과를 보고하고자 한다. 일반 보급형 휠체어에서 소변 백을 부착할 수 있는방법은 휠체어 좌석을 지지하는 프레임의 앞쪽 돌출부를 이용하는 전방측면 거치형, 휠체어 뒤쪽에서 휠체어를지지하는 X-자형 프레임에 부착하는 후방 거치형, 그리고 휠체어 좌석 하부와 X-자형 프레임 사이의 공간에 벨크로 테이프를 이용하여 부착하는 하방 거치형이 가능하였다. 전방 측면 거치형은 소변량의 관찰이 가장 쉽다는장점이 있으나 휠체어 사용자의 수치심이 크다는 단점이 있으며, 후방 거치형의 경우 소변백이 가려져서 수치심을 줄일 수 있으나, 끈으로 부착하는데 시간이 많이 걸리고 숙련도가 필요하였다. 하방 부착형은 소변백이 감취지므로 환자의 수치심이 가장 적으며, 벨크로 테이프를 이용하여 쉽게 탈부착이 가능하므로 의료 현장에서 사용할 수 있는 가장 적합한 방법이라고 사료된다. 소변백 부착이 가능한 휠체어 설계에서는 소변백 탈부착의 용이성과 함께 환자의 수치심을 감소시킬 수 있는방안이 최우선적으로 고려되어야 할 것이다. Severe urinary incontinence, in which one cannot feel the desire to urinate and urine is unconsciously voided, is caused by neurogenic bladder caused by damage to the central or peripheral nervous system, as well as cognitive decline, impaired consciousness due to aging and dementia. Most severe urinary incontinence patients are treated with a urine absorbent pads. In the case of active patients, intermittent urinary catheter is an alternative to urine absorbent pads, but the pain, discomfort, and the risk of urinary tract infection associated with the catheterization are still unresolved. A urine disposal system using a condom catheter was developed and commercialized to resolve the problems of catheterization, but it did not significantly improve patient discomfort and risk of infection. In this paper, we report three methods for attaching a urine bag to a wheelchair in a wearable urine disposal system consisting of a urine collector and a urine tube attached to the panties around the penis instead of the patient s urethra, and a urine bag that can be attached to the wheelchair to temporarily store urine. The method for attaching a urine bag to a general entrylevel wheelchair was as follows: 1) front side attachment using the front protrusion of the frame that supports the wheelchair seat, 2) back attachment using the X-shaped frame supporting the wheelchair from the rear part of the wheelchair, and 3) under attachment using the space between the lower part of the wheelchair seat and the X-shaped frame supporting the wheelchair. It was possible to attach the urine bag under the wheelchair seat using Velcrotape. The front attachment has the advantage of being the easiest method to observe urine volume, but has a disadvantage that the wheelchair user could feel the most shame when the urine bag is completely exposed to others. In the case of the rear-attachment method, the shame could be reduced as the urine bag is hidden behind, but the attachment required time and skill. The downward attachment method was considered to be the most suitable method for use in the medical field because the urine bag is completely hidden, so the patient s shame is the least, and it can be easily attached and detached using Velcro tape. In the design a urinebag attachable wheechair, minimizing the patient s shame along with the ease of attaching and detaching the urine bag on the wheelchair should be considered first.
Park, Sung-Soo,Park, Joong-Min,Kim, Jong-Han,Kim, Wan-Bae,Lee, Juneyoung,Kim, Seung-Joo,Kim, Chong-Suk,Mok, Young-Jae Wiley Subscription Services, Inc., A Wiley Company 2006 Journal of surgical oncology Vol.94 No.1
<B>Background and Objectives:</B><P>For the patients with node-negative gastric cancer, there is no agreement on which clinicopathological factors influence the final results except T stage. The aim of this study was to investigate the prognostic factors, and to reveal whether the extent of lymph node dissection is associated with survival benefit for these patients.</P><B>Methods:</B><P>Clinicopathological data of 506 patients with node-negative gastric cancer were studied. We divided the patients into D1 and D2 groups and carried out univariate and multivariate survival analyses.</P><B>Results:</B><P>On the univariate analysis, the factors influencing survival were age, tumor size, Borrmann type, resection type, and the T stage. However, multivariate analysis with the Cox proportional hazard model disclosed age and the T stage to be significant variables. The extent of lymphadenectomy was revealed to be the independent prognostic factors for survival only for the patients with T3 stage.</P><B>Conclusions:</B><P>For the patients with clinically node-negative gastric cancer, an extended D2 lymph node dissection for the patients with T1 and T2 stage has no survival benefits. Although it might have some benefit for T3 stage by multivariate analysis, we should ascertain its value through a large randomized prospective study. J. Surg. Oncol. 2006;94:16–20. © 2006 Wiley-Liss, Inc.</P>
Park, Jong-Moo,Cho, Yong-Jin,Lee, Kyung Bok,Park, Tai Hwan,Lee, Soo Joo,Han, Moon-Ku,Ko, Youngchai,Lee, Jun,Cha, Jae-Kwan,Lee, Byung-Chul,Yu, Kyung-Ho,Oh, Mi-Sun,Lee, Ji Sung,Lee, Juneyoung,Bae, Hee-J Elsevier 2014 Journal of stroke and cerebrovascular diseases Vol.23 No.10
<P><B>Background</B></P> <P>This study aimed to estimate the population-attributable risks (PARs) of 9 major risk factors for stroke in Korea through a case–control study and to test the feasibility and validity of internet-based control recruitment.</P> <P><B>Methods</B></P> <P>From April 2008 to September 2009, controls were enrolled via internet after providing consent for participation through a web-based survey. The cases included patients who were admitted to the participating centers due to acute stroke or transient ischemic attack within 7 days of onset during the study period. Each control was age- and sex-matched with 2 cases. Adjusted odd ratios, age-standardized prevalence, and PARs were estimated for the 9 major risk factors using the prevalence of risk factors in the control group and the age and sex characteristics from Korea's national census data.</P> <P><B>Results</B></P> <P>In total, 1041 controls were matched to 2082 stroke cases. Because of a shortage of elderly controls in the internet-based recruitment, 248 controls were recruited off-line. The PARs were 23.44%, 10.95%, 51.32%, and 6.35% for hypertension, diabetes, smoking, and stroke history, respectively. Hypercholesterolemia, atrial fibrillation, obesity, coronary heart disease, and a family history of stroke were not associated with stroke. Comparison with education and religion of the control group with that mentioned in the national census data showed a notable difference.</P> <P><B>Conclusions</B></P> <P>The study results imply that internet-based control recruitment for a case–control study requires careful selection of risk factors with high self-awareness and effective strategies to facilitate the recruitment of elderly participants.</P>
운행기록장치 주행 데이터를 이용한 안전성 평가방법론 개발
박성민(Park, Seongmin),김윤종(Kim, Yunjong),강가원(Kang, Kawon),박준영(Park, Juneyoung),오철(Oh, Cheol) 대한토목학회 2020 대한토목학회 학술대회 Vol.2020 No.10
특정 도로 구간의 안전 성능을 평가하기 위해서는 장시간의 충분한 교통사고 자료가 필요하다. 이 문제를 극복하기 위해, 많은 연구들이 미시적 교통 시뮬레이션에서 추정된 Surrogate Safety Measure(SSM)를 이용하려고 노력해왔다. 그러나 시뮬레이션에서 개발된 네트워크가 검증되지 않으면, 현실의 교통 조건과 패턴 변화를 반영하기 위해 개발된 SSM을 채택하기 어렵다. 본 연구에서는 개별 차량 궤적 데이터 중 하나인 운행기록장치 DTG를 이용한 패턴 기반 SSM(PSSM)을 개발하는 방법을 제안하였다. PSSM은 위험 운전 행동의 패턴을 바탕으로 추정할 수 있다. 사업용 차량에서 수집한 DTG 데이터를 활용해 개별 차량의 위험 주행 패턴을 파악했다. 데이터마이닝 기법 중 하나인 랜덤포레스트를 통하여 1차적으로 변수를 선택한 후, 위험 운전 행동 빈도에 근거하여 대리 안전성능함수 (SSPF)를 추정하였다. 그 결과 급감속, 급차로변경, 급앞지르기, 급U턴이 교통사고 빈도와 관련이 있는 것으로 나타났다. SSPF를 통해 Potential for Safety Improvement(PSI)를 산출한 결과, 주로 도시와 교외지역을 연결하는 도로 구간에서 높은 PSI가 확인되었다. 이 연구의 결과는 네트워크 수준의 안전 성능을 평가하기 위해 실시간 개별 차량궤적 데이터를 채택하는 새로운 접근방식을 제공할 수 있다.
Lee, Juneyoung,Park, Cana,Park, Seong-Cheol,Woo, Eun-Rhan,Park, Yoonkyung,Hahm, Kyung-Soo,Lee, Dong Gun John Wiley Sons, Ltd. 2009 Journal of Peptide Science Vol.15 No.9
<P>Previously, we investigated the antimicrobial properties of pleurocidin (Ple) enantiomers. Our studies showed that the L-enantiomer exhibited about a 2–16 fold more potent activity against bacterial strains as compared to that of the D–enantiomer. However, fungal strains were about two–fold more susceptible to the D–enantiomer than to the L-enantiomer. In this study, confocal laser scanning microscopy indicates that the Ple enantiomers internalize into the cell surface. The present results also suggest that they could be characterized by a membrane–active mechanism. To further elucidate their selective membranolytic activities, we conducted a fluorescence analysis. A study with 1,6–diphenyl–1,3,5–hexatriene, a hydrophobic molecule, showed that the L–and the D–enantiomer exert more potent antibacterial or antifungal activity than their opposite enantiomer, respectively. Furthermore, we synthesized liposomes by using representative phospholipids consisting of bacterial or fungal membranes. Our results show that the L-enantiomer causes significant dye leakage from negatively charged liposomes (PG/CL; 58:42, PC/PG; 1:1, w/w) which mimic bacterial membranes such as Staphylococcus aureus. Conversely, the D–enantiomer has more potent leakage effects against fungal liposomes (PC/PE/PI/ergosterol; 5:4:1:2, w/w/w/w, PC/ergosterol; 10:1, w/w). In summary, these results suggest that the selective antimicrobial effects of the Ple enantiomers against bacterial and fungal cells may be due to the different lipid compositions of prokaryotes and eukaryotes. Copyright © 2009 European Peptide Society and John Wiley & Sons, Ltd.</P>