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5.56밀리 소화기탄 탄자 코어 재질 변경에 따른 동심탄의 탄도호환성 분석
고용신,박용덕,Ko, Yongsin,Park, Yongdeok 한국군사과학기술학회 2016 한국군사과학기술학회지 Vol.19 No.6
The purpose of this study was to inspect ballistic match of copper bullet at 4 points by analyzing vertical deviation about shot group of the 5.56 mm common bullets and copper bullets. The 5.56 mm bullet with new copper core material was developed for mitigation of environmental pollution and harmfulness to human body. The results of this study are as follows; using the regression analysis, estimated reference value of ballistic match were 51.6 mm, 64.9 mm, 87.3 mm and 99.6 mm at 25 m, 100 m, 200 m and 250 m range respectively. When analyzing the shooting test data, alternative hypothesis(The vertical deviations are less than the reference value) was adopted as the result of analyzing data using t-test. And the values of data through tool(PRODAS) and standard trajectory equation meet requirements of estimated ballistic match respectively. In conclusion, the level of ballistic match of 5.56 mm copper bullets meets the estimated reference level through regression analysis at 4 points.
김남일,이명덕,고용복 대한혈관외과학회 1990 Vascular Specialist International Vol.6 No.1
Pseudoaneurysm of the gastroduodenal artery is one of the rare complications of pancreatitis. Amominal pain accompanied by a pulsatile aMominal mass is a highly suspicious sign of this condition in the patient with previous pancreatitis history. The use of computerized tomography and angiography lead to early diagnosis. The principal surgical treatment is temporary arterial inflow occlusion prior to opening the aneurysm. The bleeding point in the pseudoaneurysm sometimes can be controlled by transcystic ligation. A 36 years old, heavy alcohol drinker, male patient was transferred because of 2 weeks epigastric pain radiating to his back with a pulsatile child fist sized mass on abdomen. He has several times of acute and chronic pancreatitis prior to admission. The mass was cystic in ultrasonography and computerized tomography. Selective angiogram of common hepatic artery showed an aneurysmal cystic mass originated from gastroduodenal artery, however, it was not visualized in selective superior mesenteric arteriogram. For the risk of impending rupture because of the aggrevated pain after angiography, emergency surgery was performed. With successful bleeding control through the opening of the pseudoaneurysm which was anterior to the pancrease, irrigation and drainage could lead to complete recovery. This is a case report of a successful surgically treated pseudoaneurysm of gastroduodenal artery complicated to an alcoholic pancreatitis.
The Red Algal Genus Scinaia (Galaxauraceae, Nemaliales) on Jeju Island,Korea
이용필,고용덕,Lee, Yong-Pil,Ko, Yong-Deok The Korean Society of Phycology 2006 ALGAE Vol.21 No.3
We report six species of the genus Scinaia (Galaxauraceae, Nemaliales) from Jeju Island, Korea. Five of the species, S. cottonii Setchell, S. tokidae Kajimura, S. okiensis Kajimura, S. flabellata Kajimura, and S. confusa (Setchell) Huisman, are newly recorded in the Korean flora. Scinaia okamurae (Setchell) Huisman was previously recorded. Scinaia japonica Setchell, which is known from Korean waters, was not found. We examined thallus habits, vegetative morphology, and reproductive structures in all six species. We also appraise several morphological characters for their value in separating Scinaia species.