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서수연(Seo Soo-Yeon),윤승조(Yoon Seung-Joe),윤현도(Yun Hyun-Do),최창식(Choi Chang-Sik),최기봉(Choi Ki-Bong) 한국구조물진단유지관리학회 2005 한국구조물진단학회 학술발표회논문집 Vol.- No.-
A study is performed to analyze the status and research trend of retrofit method used in building structures at Korea. 152 Reinforced Concrete buildings with retrofitted members of 7238 in domestic after 1999 are gathered and reviewed. In addition, literature review about 191 research papers for retrofit of RC structure is performed. Results show that most widely applied retrofit method and target member are wire tension method and flexural member such as beam and slab. respectively. Recently. the use of Carbon Fiber Sheet(CFS) is increasing and many research results concerning it are provided. Therefore, it is recommended to develop an effective method to estimate the structural capacity of retrofitted member with CFS.
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서수연(Seo, Soo-Yeon),최기봉(Choi, Ki-Bong) 한국구조물진단유지관리학회 2010 한국구조물진단학회 학술발표회논문집 Vol.2010 No.2
This paper reviews the disasters affecting the structural capacity of buildings in domestic. And the structural behavior of building with damaged columns due to a disaster was investigated by analytical method in order to the prepare basic data for the safe dismantling of damaged building. ZEUS-NL program was used to analyze the nonlinear behavior of building. As a result, the stress was concentrated to the beam that a column was removed, and as it goes up to higher stories, the moment change of an upper story appeared small and the deflection value also showed similar each other. This may result from hanging action of beams.
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서수연,Soo Phil Kim,Se kyun Bang,Suk Yun Kang,Seong Jin Cho,Kwang-Ho Choi,류연희 한국한의학연구원 2021 Integrative Medicine Research Vol.10 No.2
Background: Most ETOH addiction preclinical studies have focused on the rewards of chronic ETOH self-administration or the ETOH reinstatement model. Acute ETOH administration studies are scarce despite the potential of ETOH to cause sedation, intoxication and reduced acute functional tolerance. Here, we established a rat model of acute ETOH administration induced by an intraperitoneal injection of 1 g/kg ethanol and assessed the similarities in physiological and behavioral effects between acupuncture and Sigma1 R antagonists. Methods: Male Wistar rats (300−330 g) received pretreatment with (1) saline injection, (2) saline + mechanical stimulation using a mechanical acupuncture instrument (MAI) for acupuncture at the Shenmen (HT7), (3) ETOH (1 g/kg) injection, (4) ETOH + HT7, or (5) the selective σ1 R antagonist BD 1047 (3, 10, or 30 mg/kg, intraperitoneal (IP) injection). ETOH (1 g/kg) or saline was IP injected after 10 min. Then, ETOH-induced immobility was evaluated in an open field arena, ultrasonic vocalizations (USVs) indicating ethanol-induced emotional changes were recorded in a recording chamber, and the rats were sacrificed for the analysis of protein levels of σ1 R in several regions of the brain. Results: Acute ethanol exposure increased the immobile time, 22-kHz USVs, and protein levels of σ1 R in the ventral tegmental area (VTA). However, pretreatment with acupuncture at HT7 induced recovery of immobile time, reduced 22-kHz USVs, and regulated the protein levels of σ1 R in the VTA. These effects have similarities with IP injection of BD 1047 (10 mg/kg). Conclusion: This study showed that acupuncture at HT7 regulates immobility and 22-kHz USVs via Sigma1 R in the VTA upon acute ETOH exposure.
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