http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
유영철,이 원,윤인식,정의섭 韓國非破壞檢査學會 1995 한국비파괴검사학회지 Vol.15 No.4
전자 부품의 일종인 LSI 패키지의 제조 과정에서 절연·방진·방습 등을 목적으로 수지 몰딩이 널리 사용되고 있는데, 냉각과정에서 금속과 수지의 계면에 접합 잔류열응력이 발생하여 파괴의 원인이 되고 있다. 접합 잔류열응력의 측정에는 X선 회절법등이 사용되지만 측정상의 어려움과 계면단 응력특이성에 대한 해석의 곤란함 때문에 적절한 모델링에 따른 수치해석적 연구가 새로이 주목을 받고 있다. 본 연구에서는 Al/Epoxy를 몰딩 접합한 세가지의 대표적인 계면 형상을 선정하여 계면에서의 잔류열응력을 경계요소 수치 해석 및 스트레인 게이지를 이용한 실험을 통하여 각각 해석하였다. 수치해석과 실험결과는 정상적으로 잘 일치하였으며, 서브 요소를 사용하므로써 계면단 응력 특이성의 해석 정밀도를 향상시킬 수 있었다. 또한 접합 잔류열응력의 해석결과로부터 수직응력에 의한 계면 박리가 예상되고, 피착체의 두께가 증가할수록 응력 특이성이 강하게 나타남을 확인하였다. In general residual stress is measured by X-ray diffraction method but in case of bonding residual thermal stress it is inadequate technique to examine the stress singularity. Therefore Two-dimensional elastic boundary element analyses were carried out to investigate the residual thermal stress and stress singularity of bonding interface in Al/Epoxy. This boundary element results were compared with the strain gauge measurements. The effects of different interface models, sub-elements and adherend thickness are presented and discussed. On the basis of the obtained results, interface delamination causing by normal stress is expected and stress singularity is observed more intensively increasing with adherend thickness. It is concluded that the bonding strength of Al/Epoxy interface can be estimated correctly by taking into account the stress singularity at the edge of the interface.
송평섭,강용,우광재,정의영 忠南大學校 産業技術硏究所 1996 산업기술연구논문집 Vol.11 No.2
Hydrodynamic characteristics of gas-solid flow has been analyzed by adopting the static pressure drop method in circulating fluidized beds. Pressure drop has been measured in the test section of the riser(0.1m IDx3.5m Height). The dried and filtered air was injected into the column through the perforated type distributor. Polyetylene powder whose density is 920 kg/㎥ and mean diameter is 454 ㎛ was used as a solid phase. The pressure drop slightly increased in the turbulent fluidized regime and rapidly decreased because of decreasing of solid hold-up in the fast fluidization regime with increasing superficial gas velocity. The slip velocity that is relative velocity between gas and solid velocity increased in the turbulent fluidized regime and decreased in the fast fluidized regime with increasing the superficial gas velocity.
정이영 ( Yi Yeong Jeong ) 대한천식알레르기학회 2013 Allergy Asthma & Respiratory Disease Vol.1 No.2
Adherence is defined as ‘the extent to which a patient`s behavior corresponds with recommendations from a health care provider’. In all chronic diseases, including asthma, patient nonadherence to medical recommendations is common. In asthma, low rates of adherence to preventive medication are associated with higher rates of hospitalization and death. Many patients choose not to take their medication because they perceive it to be unnecessary or because they are concerned about potential adverse effects. Approximately one third of asthma patients have strong concerns about adverse effects from inhaled corticosteroids (ICSs). Clinicians must be prepared to work in an ongoing partnership with patients to ensure that they are offered a clear rationale as to why ICS are necessary and to address their concerns about potential adverse effects. This approach, based on a detailed examination of patients` perspectives on asthma and its treatment, and an open, nonjudgmental manner on the part of the clinician, is consistent with the idea of concordance. Both the efficacy of a medication and patient adherence to the therapeutic regimen influence the effectiveness of a treatment. This article will review the underlying reasons for patient nonadherence and describe the role played by clinicians in promoting optimal medicine management. (Allergy Asthma Respir Dis 2013;1:105-110)Allergy Asthma Respir Dis 2013;1:105-110)
정이영 ( Yi Yeong Jeong ) 대한소아알레르기호흡기학회(구 대한소아알레르기 및 호흡기학회) 1991 소아알레르기 및 호흡기학회지 Vol.1 No.2
Adherence is defined as ‘the extent to which a patient``s behavior corresponds with recommendations from a health care provider’. In all chronic diseases, including asthma, patient nonadherence to medical recommendations is common. In asthma, low rates of adherence to preventive medication are associated with higher rates of hospitalization and death. Many patients choose not to take their medication because they perceive it to be unnecessary or because they are concerned about potential adverse effects. Approximately one third of asthma patients have strong concerns about adverse effects from inhaled corticosteroids (ICSs). Clinicians must be prepared to work in an ongoing partnership with patients to ensure that they are offered a clear rationale as to why ICS are necessary and to address their concerns about potential adverse effects. This approach, based on a detailed examination of patients’ perspectives on asthma and its treatment, and an open, nonjudgmental manner on the part of the clinician, is consistent with the idea of concordance. Both the efficacy of a medication and patient adherence to the therapeutic regimen influence the effectiveness of a treatment. This article will review the underlying reasons for patient nonadherence and describe the role played by clinicians in promoting optimal medicine management. (Allergy Asthma Respir Dis 2013;1:105-110)