• 수산해양기술연구
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• 제32권1호
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• pp.33-41
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• 1996

In order to obtain the most favourable classification system for fishing gears, the problems in the existing systems were investigated and a new system in which the fishing method was adopted as the criterion of classification and the kinds of fishing gears were obtained by exchanging the word method into gear in the fishing methods classified newly for eliminating the problems was established. The new system to which the actual gears are arranged is as follows ; (1)Harvesting gear \circled1Plucking gears : Clamp, Tong, Wrench, etc. \circled2Sweeping gears : Push net, Coral sweep net, etc. \circled3Dredging gears : Hand dredge net, Boat dredge net, etc. (2)Sticking gears \circled1Shot sticking gears : Spear, Sharp plummet, Harpoon, etc. \circled2Pulled sticking gears : Gaff, Comb, Rake, Hook harrow, Jerking hook, etc. \circled3Left sticking gears : Rip - hook set line. (3)Angling gears \circled1Jerky angling gears (a)Single - jerky angling gears : Hand line, Pole line, etc. (b)Multiple - jerky angling gears : squid hook. \circled2Idly angling gears (a)Set angling gears : Set long line. (b)Drifted angling gears : Drift long line, Drift vertical line, etc. \circled3Dragged angling gears : Troll line. (4)Shelter gears : Eel tube, Webfoot - octopus pot, Octopus pot, etc. (5)Attracting gears : Fishing basket. (6)Cutoff gears : Wall, Screen net, Window net, etc. (7)Guiding gears \circled1Horizontally guiding gears : Triangular set net, Elliptic set net, Rectangular set net, Fish weir, etc. \circled2Vertically guiding gears : Pound net. \circled3Deeply guiding gears : Funnel net. (8)Receiving gears \circled1Jumping - fish receiving gears : Fish - receiving scoop net, Fish - receiving raft, etc. \circled2Drifting - fish receiving gears (a)Set drifting - fish receiving gears : Bamboo screen, Pillar stow net, Long stow net, etc. (b)Movable drifting - fish receiving gears : Stow net. (9)Bagging gears \circled1Drag - bagging gears (a)Bottom - drag bagging gears : Bottom otter trawl, Bottom beam trawl, Bottom pair trawl, etc. (b)Midwater - drag gagging gears : Midwater otter trawl, Midwater pair trawl, etc. (c)Surface - drag gagging gears : Anchovy drag net. \circled2Seine - bagging gears (a)Beach - seine bagging gears : Skimming scoop net, Beach seine, etc. (b)Boat - seine bagging gears : Boat seine, Danish seine, etc. \circled3Drive - bagging gears : Drive - in dustpan net, Inner drive - in net, etc. (10)Surrounding gears \circled1Incomplete surrounding gears : Lampara net, Ring net, etc. \circled2Complete surrounding gears : Purse seine, Round haul net, etc. (11)Covering gears \circled1Drop - type covering gears : Wooden cover, Lantern net, etc. \circled2Spread - type covering gears : Cast net. (12)Lifting gears \circled1Wait - lifting gears : Scoop net, Scrape net, etc. \circled2Gatherable lifting gears : Saury lift net, Anchovy lift net, etc. (13)Adherent gears \circled1Gilling gears (a)Set gilling gears : Bottom gill net, Floating gill net. (b)Drifted gilling gears : Drift gill net. (c)Encircled gilling gears : Encircled gill net. (d)Seine - gilling gears : Seining gill net. (e)Dragged gilling gears : Dragged gill net. \circled2Tangling gears (a)Set tangling gears : Double trammel net, Triple trammel net, etc. (b)Encircled tangling gears : Encircled tangle net. (c)Dragged tangling gears : Dragged tangle net. \circled3Restrainting gears (a)Drifted restrainting gears : Pocket net(Gen - type net). (b)Dragged restrainting gears : Dragged pocket net. (14)Sucking gears : Fish pumps.

• 농약과학회지
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• 제14권2호
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• pp.138-147
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• 2010

소나무재선충에 대한 살선충 활성을 나타내는 Micromonospora sp. AW050027 균주를 최적의 배지에서 배양한 미생물배양액을 제제하여 포트 및 포장에서 살선충 효과를 확인하였다. 최적화된 배지조성은 리터당 glycerol 10 g, soybean meal 10 g, NaCl 1 g, $CaCO_3$ 2 g, $K_2HPO_4$ 0.125 g 이었으며, 활성균주를 배양하여 농축한 후 액상 및 분말 미생물제제를 제조하였다. 제제에는 소나무재선충 공생미생물에 대하여 가장 효과적으로 항균활성을 나타내는 kanamycin을 첨가하여 사용하였다. 포트시험, 예비포장 시험 및 본포장 시험을 통하여 소나무재선충 방제효과를 확인한 결과, 액상제제를 수간수사하여 처리한 경우 1회처리시 고사율 53%, 5회 분할처리시 28%로 분할처리가 1회처리보다 2배 가량 효과적이었고, 배양농축액을 분할처리한 경우에서는 대조구의 고사율 100%에 대하여 고사율 10% 이내로 가장 낮게 나타났다.

• 수산해양기술연구
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• 제44권1호
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• pp.20-30
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• 2008

In order to evaluate the biodegradability of bait used in the pot for swimming crab, water tank experiments were conducted. Mackerel is the most commonly used natural form of bait to catch the swimming crabs, and therefore was used in this experiment for the biodegradability according to the manufacturing process of the bait. From the biodegradability test on chemical oxygen demand(COD), total nitrogen(T - N), total phosphorus(T - P), ammoniac nitrogen, nitrite nitrogen and nitrate nitrogen per unit weight of the bait based on the production rate and the accumulated amount of pollutants, it was concluded that the smaller the size of the mackerel pieces, the higher the production rate and accumulated amount of organic matter and nutrients which was unfavorable to water pollution. The amount of pollutants released from the intestine of the tuna was similar with that from the whole mackerel. For the operation period of 111 days, the accumulated concentrations of tested pollutants from the tuna which were 67.3 mgCOD/g d, 86.4 mgT N/g d, 3.1 mgT - P/g d, were almost half comparing with those from the mackerel which were 65.7 - 94.4 mgCOD/g d, 83.8 - 109.4 mgT - N/g d, 3.1 - 5.2 mgT - P/g d. The amount of pollutants released from the intestine of the tuna was slightly less than that from the mackerel that was cut into 8 pieces. but more than that from the mackerel which was not cut into pieces. Therefore, it can be concluded that the key factor in determining water pollution potential is not the kind of bait, but the processing or preparation method used.

• 폴리머
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• 제24권1호
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• pp.72-81
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• 2000

벤조산 폴리에스테르/락톤 폴리올의 합성은 디올로서 폴리카프로락톤 0201, 트리올로서 트리메틸올프로판, 2염기산으로서 아디프산 및 1염기산으로 벤조산을 사용하였다. 폴리이소시아네이트 프리폴리머는 HDI-biuret형인 Desmodur N-100을 사용하였다. 벤조산 폴리에스테르/락톤 폴리올, 폴리이소시아네이트, 안료, 습윤분산제 및 플로우개량제 등을 블렌드하여 2성분계 폴리우레탄 도료를 제조하였다. 제조된 폴리우레탄 도료로서 도막시편을 제작하여 각종 도막 물성시험을 행한 결과 KS 규격에서 제시한 기준치와 비교하여 내마모성, 촉진내후성, 황변도는 우수하게, 굴곡성, 내충격성, 60$^{\circ}$ 경민광택도, 접착력, 내유성, 명도지수차는 양호하게, 경도는 다소 나쁘게 나타났다. 따라서 디올로서 폴리카프로락톤 0201을 도입한 후 내유성, 굴곡성, 내충격성의 장점이 나타남을 확인하였다. 또한 벤조산 함량변화에 따른 고화 및 경화거동을 살펴 본 결과, 고화에 따른 건조시간은 2~4시간으로, 경화에 따른 가사시간은 20~37시간으로 각각 나타나, 도막표면의 고화 및 경화상태가 양호함을 보여주었다.

• 식물조직배양학회지
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• 제28권4호
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• pp.179-184
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• 2001

담배 정상주 (Nicotiana tabacum L. cv. BY-4), 약배양으로 유도시킨 반수체 (2n=2x=24), 콜히친 처리로 염색체를 배가한 식물체 (2n=4x=48)및 그 후대식물체 (F$_1$)를 각각 사용하여 배수성에 따른 공변세포 내 엽록체 수를 조사하였다. 공변세포 내 엽록체의 수는 정상주에서 반수체의 2배로 배수성과 밀접한 관계를 나타내었다. 또한, 반수체를 콜히친으로 배가시킨 식물체에서 공변세포 내 엽록체의 수는 반수체의 2배로 배수성이 회복됨에 따라 증가하였다. 이배체의 후대식물에서도 공변세포 내 엽록체의 수는 반수체의 2배로 나타났다. 엽령에 따른 공변세포 내 엽록체 수의 변동도 관찰되지 않았다. 이러한 결과는 기공의 공변세포 내에 분포하는 엽록체 수와 배수성 (2x와 4x)과는 밀접한 관계가 있음을 시사하는 것이다. 기내에서 생장한 식물체에서 공변세포 내 엽록체의 수는 pot 재배식물체와 비슷한 결과를 나타내었다. 따라서 잎의 공변세포 내 기공수는 배수성을 간단하게 판정하는데 이용할 수 있을 것으로 보인다.

• 한국패류학회지
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• 제24권2호
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• pp.131-136
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• 2008

피조개 부착치패의 중간양성시 생존율을 향상시키기 위하여 보호망의 형태 및 유실 방지망의 종류에 따른 부착치패의 성장 및 생존을 조사하였다. 보호망의 형태별로 60일간 중간양성한 부착치패의 성장은 노출형이 평균 각장 $12.8{\pm}3.2$ mm로 가장 빨랐으며(P<0.05), 통발형이 $12.2{\pm}3.5$ mm, 원통형이 $11.9{\pm}3.8$ mm, 직사각형이 $10.9{\pm}3.7$ mm순으로 큰 차이를 나타내지 않았다. 생존율은 통발형이 43.7%, 원통형이 41.2%, 직사각형이 31.6%로 보호망의 형태에 따라 통발형 및 원통형이 직사각형보다 높았으며, 노출형이 5.4%로 매우 낮았다(P<0.05). 유실 방지망 종류별로 163일간 중간양성한 부착치패의 성장은 차광막이 평균 각장 $13.9{\pm}3.1$ mm로 가장 빨랐고(P<0.05), 여자망이 $12.9{\pm}3.0$ mm, PE망이 $11.8{\pm}3.1$ mm 및 대조구가 $12.6{\pm}3.3$ mm 순으로 나타났으며, 생존율은 차광막이 91.5%, PB망이 90.1%, 여자망이 88.5%로 유의한 차이가 없었다. 그러나 유실 방지망을 설치하지 않은 대조구에서는 61.5%로 설치한 시험구보다 유의하게 낮았다(P<0.05). 피조개 부착치패의 중간양성시 보호망은 통발형 및 원통형을 사용하면 채묘망과 보호망 간의 공간이 확보되어 마찰에 의한 탈락을 방지하고, 해수의 소통이 원활하여 높은 생존율을 기대할 수 있을 것으로 판단된다. 그리고 보호망목의 크기는 2 mm 내외를 사용하여 해수의 유통이 비교적 원활히 되도록 하였으며, 일시적으로 탈락하는 개체의 유실을 방지하기 위하여 부착치패 채묘망과 직각으로 설치한 결과 높은 생존율을 보였다. 유실 방지망 종류별 중간양성시험 결과는 시험기간이 겨울철이여서 태풍 등의 영향을 전혀 받지 않았고, 보호망에 부착물질이 거의 없어 생존율이 매우 높았다. 겨울철 중간양성이 여름철 중간양성 보다 생존율에서는 월등히 높은 결과를 나타내어 산업화를 위해서는 유리할 것으로 추정되었다. 따라서 피조개 부착치패 중간양성 시기는 태풍 등의 위험한 시기를 피하여 조절하고, 피조개 부착치패의 중간양성시 통발형 및 원통형의 보호망과 유실 방지망을 병행하여 사용하면 높은 생존율을 기대할 수 있을 것으로 판단되었다.

• 대한건축학회논문집:구조계
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• 제36권4호
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• pp.135-142
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• 2020

The new method for evaluating the displacement tolerance of sky-bridges with pin-roller type supports was proposed considering both return period of phase difference between connected buildings and geometrical characteristics of skybridge. Because displacement tolerance is relative value, which is most affected by the phase difference of the connected buildings, the dynamic response of these building with time history analysis should be evaluated. However, the initial phase could not be specified, so the result of displacement tolerance would be varied with respect to initial value. Thus, the tolerance can be reasonably evaluated SRSS calculation with design displacements based on statistical approach and of each building. In addition, the geometrical characteristics of sky-bridge should be considered because the transverse displacement of sky-bridge span causes the shear deformation of the bridge and longitudinal displacement tolerance cannot release the shear deformation. Therefore, the some pin-end support in sky-bridge should have longitudinal displacement tolerance to accommodate the shear deformation. By resolving this shear deformation, it is possible not only to accommodate transverse displacement, but also to avoid the complicated joint details such as both pot bearing and guided supports with shear key.

• 한국연소학회:학술대회논문집
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• 한국연소학회 2004년도 제29회 KOSCI SYMPOSIUM 논문집
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• pp.33-40
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• 2004

Combustion of coke/anthracite in an iron ore sintering bed is characterized quantitatively by introducing newly defined parameters related to propagation and thickness of combustion zone and maximum temperature. The parameters are obtained by sintering pot experiment and I-D, unsteady numerical model which treats solid material as multiple solid phases. Experiments and calculations are performed for various major operating parameters: air inlet velocity, different type of fuels which have different reactivity and diameter of the solid fuel. Effects of the operating parameters on the productivity and quality of the sintering process are investigated and evaluated quantitatively and the results show that optimized air supply rate and diameter of anthracite for replacement of coke can be obtained. This approach can be applied to other kinds of combustors for characterization of the combustion in the solid fuel beds.

• 한국연초학회지
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• 제10권1호
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• pp.3-9
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• 1988

Effect of several nitrogen fertilizer sources on the chlorine absorption by the burley tobacco plants was investigated under the field and pot condition. The nitrogen sources included compound fertilize.(containing 3.9% NH4-N and 6.1% NH2-N), (NH4)2SO4, NaNO3. (NH2)2CO and NH4NO3. The chlorine content of leaf during growing stage was high in (NH4)2SO4 plot , and the differences among nitrogen sources was remarkable at maximum growing stage. The chlorine content of cured leaf was high in (NH4)2SO4 plot. When the (NH4)2SO4 was applied, the total alkaloid content of cured leaf was increased and the color of cured leaf became undesirable with the increment of leaf chlorine. The yield, quality and value of cured leaf were high in NaNO3 plot , while low in (NH4)2SO4 plot.

• 복식
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• 제36권
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• pp.205-217
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• 1998

Several aspects of conscious about somato-type were analysed for high school girls among Seoul, Kwangju, Wando. Questionnares was comprised of 24 item of the conscious about somatotype. Questionnaress were sent to sample of students of high school. The data from 593 respondantss were analysed in using Freequency, Crosstab, and T-test. The results were as follows: 1. High school students in Wando tend to have shorter and fatter than Seoul and Kwangju. 2. Respon-dents were conscioused of , , . 3. Of the trouble of somatotype, respondents of all region have troubled about , , , , It was founded that Respon-dents in Seoul have much the trouble about , than other regions. 4. Mean of Agreement of somatotype were scored 3.49 in Seoul 3.37 in Kwangju, 3.39 in Wando. It was founded that respondents in Seoul were not satisfied more than Kwangju, Wando. And then Respondents in Seoul have strong aspiration to be slim about somatotype although they are a stansard somatotype.