• 제목/요약/키워드: p130

검색결과 1,515건 처리시간 0.03초

건설공사 안전관리 및 시공 업무의 중요도 분석에 관한 연구 (Analysis of Construction Safety Management and Execution Tasks for Performance Improvement)

  • 강상훈;김대영
    • 한국건축시공학회:학술대회논문집
    • /
    • 한국건축시공학회 2018년도 추계 학술논문 발표대회
    • /
    • pp.130-131
    • /
    • 2018
  • The main purpose of this study is to analyze the importance of the construction work of apartment buildings. The construction work operation was divided into five major tasks, which include: Schedule Control (P'1 - P5) Construction Management (C'1 - C'5), Environmental Management (E'1 - E'3), and Quality Management. Finally, this study derived major construction execution tasks through correlation between construction work and the original index and t-test.

  • PDF

Anomalous Subthreshold Characteristics of Shallow Trench-Isolated Submicron NMOSFET with Capped p-TEOS/SiN

  • Lee, Hyung J.
    • Transactions on Electrical and Electronic Materials
    • /
    • 제3권3호
    • /
    • pp.18-20
    • /
    • 2002
  • In sub-l/4 ${\mu}{\textrm}{m}$ NMOSFET with STI (Shallow Trench Isolation), the anomalous hump phenomenon of subthreshold region, due to capped p-TEOS/SiN induced defect, is reported. The hump effect was significantly observed as channel length is reduced, which is completely different from previous reports. Channel boron dopant redistribution due to the defect should be considered to improve hump characteristics besides considerations of STI comer and recess. 130

현장탐방 - 하자없는 시공, 철저한 안전관리로 완벽 추구, 성창E&C(주) SK이노베이션 인천 V4-PROJECT

  • 대한설비건설협회
    • 월간 기계설비
    • /
    • 통권290호
    • /
    • pp.53-59
    • /
    • 2014
  • SK이노베이션이 발주한 V-PROJECT는 이미 가동중인 SK에너지 인천COMPLEX 석유화학플랜트 기존 공장에 Condensate와 Crude를 처리하여 Benzene과 p-Xylene 생산시설 및 부대시설 증설 프로젝트이다. 이 시설에서 주로 생산되는 자일렌(p-Xylene)은 폴리에스터 섬유의 원료로서 국내를 비롯하여 중국, 인도, 남미 등의 섬유시장 성장으로 최근들어 수요가 많아짐에 따라 생산시설을 증설한 것이다. 이 프로젝트 완공으로 2015년부터는 기존보다 3배 증가한 벤젠 50만톤, 톨루엔 10만톤, 자일렌 130만톤이 연간 생산될 예정이다. 본지는 V4 Area의 기계설치 및 배관 철골제작 설치, 도장공사를 시공한 성창E&C(주)(대표 김기영)의 이종윤 소장을 만나 플랜트 현장 특성 상 기밀사항인 시공은 생략하고 현장 이야기를 들어 보았다.

  • PDF

Antimicrobial Activities of Hydroxybiphenyl Derivatives (II) - Synthesis and Antibacterial Activities of Allylhydroxybiphenyl Compounds against a Cariogenic Bacterium Streptococcus mutans ATTCC OMZ176

  • Seo, Won-Jun;Koo, Sung-Hyen;Bae, Ki-Hwan
    • Archives of Pharmacal Research
    • /
    • 제9권3호
    • /
    • pp.127-130
    • /
    • 1986
  • Naturally occurring diallyldihydroxybiphenyl compounds, magnolol and honokiol were reported to have potent antibacterial activities against most of Gram positive bacteria (1-4). To developmore potent antibacterial agents, some allyhydroxybiphenyl derivatives were synthesized from the starting compounds, p-phenyl-phenol (I) p-phenylphenol (IV), o, o-biphenol (VII) and p. p'-biphenol (XII). Among the newly synthesized compounds (III, VI, IX, XI, XIV and XVI), the antibacterial activities of 2-allyl-p-phenylphenol (VI), 6-ally-o, 0'-biphenol (IX), 2, 2'-diallyl-o, o'-biphenol (XIV) and 2, 2', 6-triallyl-p, p'-biphenol (XIV) were more potent than those of magnolol and bonokiol against a cariogenic bacterium, Stroptococcus matans ATCC OMZ 176.

  • PDF

무우의 유자엽에서 Polyamine의 수송 분석 (Analysis of Polyamine Transport of Young Spring Radish Cotyledons)

  • 조봉희
    • 분석과학
    • /
    • 제11권2호
    • /
    • pp.130-134
    • /
    • 1998
  • 봄무우의 어린자엽을 이용하여 polyamine의 수송을 분석하였다. Spermidine(SPD)은 20분까지는 빠른 속도로 세포내로 수송되었고, 1시간 이후에는 포화상태에 도달하였다. SPD의 수송속도는 세포내에 polyamine(PA)의 농도가 증가될수록 감소되었다. PA의 수송속도는 외부배지의 pH에 의존되었고, 수송속도는 pH 7.5에서 최고에 도달되었다. $K_m-$$V_{max}-$값도 외부 배지의 pH에 의존되었다. KCl은 세포막전위를 낮추어 PA의 수송을 방해하였다.

  • PDF

저온소결 PMN-PNN-PZT 세라믹스의 WO3 첨가에 따른 압전 및 유전특성 (Piezoelectric and Dielectric Characteristics of Low Temperature Sintering PMN-PNN-PZT Ceramics with the amount of WO3 Addition)

  • 류주현;김국진;이석태
    • 한국전기전자재료학회논문지
    • /
    • 제20권2호
    • /
    • pp.130-134
    • /
    • 2007
  • In this study, in order to. develop the low temperature sintering ceramics for multilayer piezoelectric actuator, PMN-PNN-PZT ceramics using CuO, $Bi_{2}O_{3}\;and\;Li_{2}CO_{3}$ as sintering aids were manufactured with the amount of $WO_{3}$ addition. The ceramics were sintered at $900,\;930,\;960^{\circ}C$, respectively. Thereafter, their microstructural, dielectric and piezoelectric properties were investigated. The $WO_{3}$ was proved to lower the sintering temperature of piezoelectric ceramics due to the effects of PbO and $WO_{3}$ liquid phase. At 0.3 wt% $WO_{3}$ added specimen sintered at $930^{\circ}C$, electromechanical coupling factor($k_{p}$), mechanical quality factor($Q_{m}$), dielectric constant and $d_{33}$ showed the optimum values as the values of 0.60, 1,402, 1,440 and 360 pC/N, respectively, for multilayer piezoelectric actuator application.

Reliability and Validity of the Korean version of the Pain in Older Adults Knowledge Survey (K-POAKS) among Nurses Who Have Worked in Long-term Care Hospitals

  • Ryu, Young Seun;Park, Jeong Sook
    • 지역사회간호학회지
    • /
    • 제31권2호
    • /
    • pp.130-142
    • /
    • 2020
  • Purpose: The purpose of this study was to verify the validity and reliability of the Korean version of the Pain in Older Adults Knowledge Survey (K-POAKS) to assess knowledge of pain in older adults including people with dementia for use in long-term care hospital nurses. Methods: Survey data were collected from a convenience sample of 179 nurses who have worked in long-term care hospitals in B, D and U cities. The Kuder-Richardson Formula 20 for internal consistency for test reliability was conducted. The content, criterion-related and construct validity were evaluated using SPSS/WIN 22.0. Results: The KR 20 was .75 and Content Validity Ratio (CVR) was a range of 0.84~1.00. The criterion-related validity was positively correlated with attitudes (r=.28, p<.001) and performance (r=.21, p=.004). The construct validity of K-POAKS was analyzed by conducting the principal component method using the exploratory factor analysis varimax rotation, and seven factors were derived above the eigenvalue of 1.0. The seven factors explained 58.5% of the total variation. Conclusion: The Korean version of the POAKS showed satisfactory internal reliability, content validity, criterion-related validity and construct validity. These results suggest that the K-POAKS could be used as a suitable tool to measure the knowledge of the aged people's pain, including that of dementia patients for long-term care hospital nurses.

바니쉬의 절연성 평가 (The Insulation Test of Varnish)

  • 김정훈;신백철;김성필;이수원;이종필;홍진웅
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 1999년도 추계학술대회 논문집 학회본부 C
    • /
    • pp.950-952
    • /
    • 1999
  • In this paper, we are studied a electrical properties study with P.D.GEORGE/STER LING Co. P.B 302-LV-2 POLYBUTADIENE RESIN which is used for VPI(Vacuum Pressure Impregnation)processing of field magnet and armature of traction motor in Korean national railroad at present was carried out its FT-IR (Fourier Transform Infra-Red) volume resistivity characteristics. The varnishes were experimented with the temperature range form $25[^{\circ}C]$ to $180[^{\circ}C]$ and applied voltage were supplied at 100, 250, 500, 1,000[V]. In this condition, the volume resistivity for specimens were measured. From the above study, the following data obtained for volume resistivity. It can be confirmed that velume resistivity with the increase of temperature is lower rapidly from room temperature to $130[^{\circ}C]$, and it is lower slowly at temperature higher than $130[^{\circ}C]$. Volume resistivity value is higher, according as the specimen is thick gradually. As the applied voltage is higher in the same temperature, volume resistivity value is lower.

  • PDF

운동시 피부온의 변화에 대한 서모그래피 활용 분석 (Analysis of Thermography on Skin Temperature during Exercise)

  • 김희은;이아람
    • 한국의류산업학회지
    • /
    • 제14권1호
    • /
    • pp.130-135
    • /
    • 2012
  • The purpose of this study was to investigate the variation of regional skin temperature with thermography during exercise. Seven men completed 82-min trials which consisted of rest, exercise of $VO_2$ max 60% and recovery period at $30{\pm}0.5^{\circ}C$ and $60{\pm}5%RH$. Changes in skin temperature due to physical activity varied, depending region of the body. The skin temperature of the chest was significantly lowered and that of the back was significantly increased after exercise period(p < 0.05). There were significant negative relationship between the skin temperature of the chest and thermal comfort sensation, and positive relationship between skin temperature of the back and thermal comfort sensation(p < 0.05). It would be better to keep the chest warm, and the back cool during exercise. The skin temperature changed differently on body site due to exercise, and it was influenced by blood flow, sweating and air movement. This study would be meaningful in that the change of regional skin temperature during exercise was investigated consecutively with thermography. In further study, it would be more realistic to measure physiological response with functional sportswear which applies different functional fabric based on skin temperature.

노화에 대한 취약성 비교에 따른 고령 농업인과 비농업인의 차별적 패턴 (Differential Patterns of Elderly Farmers and Non-farmers According to Vulnerability to Aging)

  • 신다비;강은경
    • 농촌의학ㆍ지역보건
    • /
    • 제45권3호
    • /
    • pp.130-140
    • /
    • 2020
  • 목적: 본 연구는 65세 이상 농업인과 비농업인의 노화에 따른 취약성을 파악하고 차이를 비교 분석하고자 하였다. 방법: 본 연구는 단면 연구로서 강원도에 거주하는 고령의 농업인 29명과 비농업인 25명이 연구에 참여하였다. 노화에 대한 취약성 평가를 위해 노쇠, 신체 구성, 인지·신체 기능, 심리 상태를 검사하였다. 결과: 집단 간 유의한 차이가 있었던 배우자 유무를 보정하여 편 상관 분석한 결과, 농업인에서만 나이와 취약성 요소 간 유의한 상관관계가 있었으며, 편 상관 계수를 비교하였을 때 body mass index(BMI, r = -0.625 vs 0.026, P < 0.01), 우울도(r = 0.521 vs -0.046, P < 0.05)에서 유의한 차이가 있었다. 결론: 고령의 농업인과 비농업인의 노화에 대한 취약성을 비교하였을 때 나이와 취약성 요소 간 유의한 상관관계는 농업인에서만 나타나 비농업인과는 차별적인 패턴을 보였다. 이러한 결과는 농촌의 고령 농업인에 대하여 건강한 노화를 위한 예방 및 관리 전략이 필요함을 시사한다.