http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Farshad Ghaffari (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Mohammad Reza Adlparvar,Mohammad Ghasem Vetr,Farshad Ghaffari 한국강구조학회 2017 International Journal of Steel Structures Vol.17 No.1
It is commonly believed by structural engineering researchers that the slotted-web beam connection rectifies many common weaknesses, and hence this connection is recommended whenever possible. Suitable ductility without considerable strength loss is the most important advantage of this type of special moment connection. The shear force present in beam flanges with lateral torsional buckling are mentioned as the main causes of weld fracture in most connections. The separation of flange from beam’s web results in separation of the force shares of beam’s flange and web; also, removal of the shear from beam’s flanges will cause uniform distribution of stress through the width of the beam flange. In this study the seismic behavior of improved slotted-web beam connections is compared with similar samples numerically and experimentally. Results suggest that in case of proper use of beam flange stiffeners, this type of connection does not show any loss of strength and provides suitable ductility. Since shear strength of the panel zone is effective on beam-to-column weld strains, participation of the panel zone in seismic behavior of this type of connection is of interest. Results show that high participation of panel zone effect causes the possibility of weld fracture in beam web to increase and the maximum strength of the connection to decrease. Performance comparisons are made based on envelope curves and percentage of energy dissipation of the specimens. Suitable ductility at this connection proves that this connection shall be classified as special moment connection.
-
The influence of socioeconomic factors on deceased organ donation in Iran
Elahe Pourhosein,Farzaneh Bagherpour,Marzieh Latifi,Maryam Pourhosein,Gholamreza Pourmand,Farshad Namdari,Naghmeh Pourmand,Parisa Ghaffari,Sanaz Dehghani 대한이식학회 2022 Korean Journal of Transplantation Vol.36 No.1
Background: There is a large gap between the number of patients on organ waiting lists and the number of available organs for donation. This study investigated the socioeconomic factors in Iran that influenced decisions for organ donation among the families of brain-dead donors. Methods: This retrospective cross-sectional study was performed among the families of 333 organ donors in Iran. Two trained researchers interviewed family members about the donor’s age, sex, cause of brain death, education level, marital status, number of children, history of addiction, the financial status of the donor’s family, and reasons for which they considered refusing organ donation. Results: The mean age of the donors was 37.23±16.59 years. During 2017–2019, significant differences were found according to income (P<0.001), marital status (P<0.001), sex (P=0.04), and occupation (P=0.04). More than half of the organ donors were of low socioeconomic status, and nearly half were the sole income earners of large families. Trauma was the most common cause of death (44.6%). The most common reasons for which the families considered refusing organ donation were unfamiliarity with the concept of brain death, denial, and the expectation of a miracle. Conclusions: The donor’s socioeconomic status and availability of social services, such as insurance coverage, psychological services, and mourning therapy courses, play an important role in organ donation. Adequate support for the deceased’s family after organ donation is imperative.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
