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호소 비탈면 녹화용 식물 선정을 위한 몇 가지 습생식물의 내침수성에 관한 연구
박성학,박종민,오현경 강원대학교 산림과학연구소 2007 Journal of Forest Science Vol.23 No.2
This study was carried out to select the utilizable vegetations for the stabilization of slopes and river banks, landscape creation and water quality cleansing in dams, lakes and streams. In this study, 4 species were investigated for their survival and growth characteristics in the complete and partly flooding conditions with various flooding periods. The results are as followings; Acorus calamus var. angustatus showed the highest flooding tolerance based on survival rate and growth condition. Equisetum hyemale, Acorus gramineus and Salix gracilistyla followed after Acorus calamus var. angustatus in the order of flooding tolerance. Particularly, A. calamus var. angustatus and E. hyemale showed higher survival rate and grew well even when they were completely submerged in the water up to 120 days. As they were partially submerged longer, they grew better. This ascertained that they had strong flooding tolerance. When A. gramineus were completely submerged in the water, their growth was disturbed but they did not die in the complete submergence up to 120 days. A. gramineus had a small growth disturbance and showed the highest vitality of leaves among the species. Though S. gracilistyla showed somewhat low growth rate in the complete water submergence and died in 90 days, it also can grow back to normal with some changes of water level.
박성학 대한영상의학회 1985 대한영상의학회지 Vol.21 No.2
Percutaneous biopsy is the most frequent interventional radiographic procedure. Its increased use is related to new imaging techniques facilitating needle placement, greater safety of fine needle and advances in cytology. Computed Tomography(CT), becauses of its characteristic high spatial and denisty resolution, permits the accurate localization of any lesion in the boldy. Because of the ability of CT scans to precisely localize lesions and biopsy needle, along with the delineation of aduacent structures, it is widely used in percutaneous biopsy. Sixty-six cases of CT-guided percutaneous fine-needle biopsy were performed in order to diagnose suspected malignant or infectious diseases(49malignant and 17 infectious) over a 7-month period(June 1984 through December 1984). Most of these procedures were performed on, but not limited to, the lung(21), liver(20), and pancreas(7). The spine and nasopharynx could also safely be biopsied. 4 cases of heaptic abscesses were successfully rained following insertion of draining catheter under the CT-guidance. The overall accuracy of both suspected malignant and infectious diseases was 82%. Complication rate was low as 6%(4cases only in thorax). Neither complication require any further intervention. Three were self-limited pneumothoraces and one was minimal hemorrhage around the needle tract.