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RISS 인기검색어
- 검색키워드
- 저자 : 이주환 ( Joo Whan Lee ) (검색결과 2 건)
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김인식 ( In Sik Kim ),유근옥 ( Keun Ok Ryu ),이주환 ( Joo Whan Lee ) 한국농림기상학회 2012 한국농림기상학회지 Vol.14 No.4
This study was conducted to investigate the climatic factors affecting bud phenology of Pinus densiflora provenances. Data were collected from Jungseon, Chungju and Jeju plantations which were parts of the 11 provenance trials established by Korea Forest Research Institute in 1996. The 36 provenances were included in this trial (33°30`~38°08` in latitude and 126°30`~129°20` in longitude). The bud swelling date and bud burst date of the provenances were investigated from March to May in 2004 in two-day interval. The four geographic factors and fifteen climatic factors of the test sites and provenances were considered in this study. Canonical correlation analysis was conducted to examine the major factors affecting the bud phenology. Our results suggested that the major factors affecting the timing of bud swelling and burst are the differences in latitude, longitude, extremely low temperature (during December-February), extremely high temperature (during November-February)and annual mean growing days between test plantation and provenance. The provenances with lower winter temperature than that of plantation showed the faster bud swelling and bud burst. Based on these results, the implication on the seed transfer of P. densiflora was discussed.
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Intracerebral Hemorrhage Remote From the Site of Aneurysm Surgery
Lee, Joo Whan,Yim, Man Bin,Lee, Jang Chull,Son, Eun Ik,Kim, Dong Won,Kim, In Hong 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.4
과거 13년간 수술적 가료를 시행한 720례의 뇌동맥류 환자중 5례(0.7%)에서 수술부위에서 원격한 부위에 뇌내출혈이 발생되었다. 환자들은 후교통동맥류 2례, 전교통동맥류 2례 및 전교통동맥류와 중대뇌동맥류를 가진 1례였다. 출혈부위는 소뇌 3례, 수술부위의 반대측 대뇌 1례 및 수술부위와 원격한 동측 대뇌 1례였고, 출혈시기는 지주막하 출혈후 4례가 15일에서 23일 사이에 1례가 5일후에 발생되었다. 특징적으로는 이들 환자들에서 갑자기 혈압이 고혈압으로 상승하였다가 저하되는 혈압의 유동성이 관찰되었는데 술전에 3례, 술후에 전예에서 관찰되었었다. 또란 이들중 3례에서는 술전 뇌혈관 연축에 기인한 허혈성 증상들을 보였었다. 결론적으로 뇌동맥류수술후 야기되는 원격 뇌내출혈의 원인은 뇌혈관연축의 완화기에 협압의 갑작스런 유동이 원인이 될 것으로 추정되고, 이러한 합병증을 예방하기 위하여서는 수술시 혹은 술후 혈압변동을 최소화하는 것이 필요할 것으로 생각된다. 또한 술전에 뇌혈관연축에 기인한 뇌허혈증상을 보였던 환자나 혈압의 유동을 보였던 환자들에서는 이러한 합병증이 발생을 예방하기 위하여 특히 더욱 세심한 혈압조절이 필요할 것으로 사료된다. In order to find out possible causes and measures for prevention of intracerebral hemorrhage remote from the site of cerebral aneurysm surgery. the authors analyzed five patients who developed such a complication following aneurysm surgery among 72O surgical cases of cerebral aneurysm. The aneurysm sites were posterior communicating artery(Pcom) in two cases. anterior communicating artery(Acom) in two. and Acom and middle cerebral artery(HCA) in one. The hemorrhages in three cases occurred in the cerebellum. one in the contralateral hemisphere and one in the ipsilateral hemisphere to the operation site. All hemorrhages except one occurred between 15 and 23 days following an aneurysm rupture and three of five cases showed ischemic symptoms due to vasospasm preoperatively. Fluctuation of blood pressure with sudden elevation to a high level was noticed in three cases preoperatively and in all cases postoperatively. We conclude that sudden elevation of blood pressure during the remission stage of vasospasm seems to be a possible cause for remote hemorrhage. To prevent this complication, we recommend meticulous control of blood pressure during surgery and in the postoperative period. especially in cases that showed fluctuation of blood pressure preoperativsly.
ScienceON
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