• 수산경영론집
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• 제16권1호
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• pp.91-124
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• 1985

Mariculture is contrasted with inland aqua-culturing fisheries. It is defind as the Industry of rearing Aquaorganism in limited coastal area relatively shallow in depth. Then, It's coming into being realization of Mariculture in it is long in history that Mariculture was realized in Korea. But it is from the early part of 1960s, that this industry has normally developed. Owing to 200 miles economy-zone problems of coastal countries, the development of deep sea fishing was limited, so the Korean Government has now appreciated the importance of cultured industries in the field of coastal fisheries. And the Korean Mariculture the output of which was only 18, 000 M/T in '60s attained 540, 000M/T in 1980s, has now occupied its relative importance in Korean Fisheries Industry. So the purpose of this report is to suggest the prospect of technical development of mariculture in the future of Korea, through the analysis of the various problems that affect upon the individual management '||'&'||' fishing ground utilization, along with the appreciation of "how to extend of those technical innovation" and "how the fishermen's technique level is extended at this stage. According to this study, the result is summarized as follows. First, Maricultural technique is classified into 8 sub-techniques as follows, as shown in fig. 1.Fig. 1. The Formation structure of mariculture technique Second, the change of technical method of mariculture in coastal area of Korea has made as 5 stages; 1) Scattering of culturing organism 2) Culturing by putting stone and installing bamboo 3) Culturing by installing rope and seeding 4) Culturing of putting objectives in cages 5) Culturing fish by feed Third, the maricultural fisheries of Korea has about 70 years long in history. It began from 1910s. But at that time there was no special technique in aquaculture and its technique was confined in searching out the object of species. The species was laver, oyster ect.Forth, although realization of mariculture in Korea has been long time, it is of late from 1960s that this has been industrial with normal development, and its technique of mariculture has mainly has developed from 1970s. Its result not only contributed to the high growth in Korean ecconomy along with the well balanced development between industires, but also it played a great role for the resolution of nation's food problem. Especially maricultural production has shown its sustained annual increase of 13.8% during the last 20 years. So the portion of mariculture among total fisheries stucture was extended from 4.1% in the early 1960s to 22.4% in 1980s.Fifth, it could be safely said that such development in maricultural field is resulted from the activity of aquacultural institutes such as Fisheries Reseach '||'&'||' Development production of major kinds such as Oyster, Sea-mustard, and Laver etc. As well as in the innovation of aquaculturing method with synthetic fiber utilization. FRDA has played important role in the efficient propargation of new aquacultural technique.Sixth, as for the change in aquaculture structure and its during period between 1970s and 1980s, the private management participation shown 25% increase from household number of 45, 173 to 56, 268 in total number. And in the respect of the management scale, of their management decreased, while it showed an increase in relative large scale management, the increase over 3 employees compared with other fisheries field between '70s and 80s. This must be an major trait to be recorded, Now the data above mentioned are shown as in table 1 and 2.Table 1. The maricultural fishing ground development situation in 982.Table 2. The mariculture management as seen in the employmnet size in high seasion.Owing to the technical innovation, of the mariculture in coastal area new income of fishermen increased and it also is true that the number of fishermen participating in its industrialization increased. But the problem being from now on is the self-discharge of the destruction fishing ground considered resulted from rapid expansion in aquaculture industry and the preventive system of sentility of fishing ground. sentility of fishing ground.

• 수산해양기술연구
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• 제33권4호
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• pp.321-333
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• 1997

연얀 내만에서 행해지고 있는 양식어업, 정치망어업 등의 생산과 관리를 효율적으로 행할 수 있는 기초 쟈료를 마련하기 위하여 어류의 서식환경과 분포상태를 원격으로 측정할 수 있는 원격계측 시스쳄을 구성하여 1995년 10월부터 1996년 5월까지 경남 통영시 산양면 육삼양어장에서 시스템의 기능, 수온.염분과 어군행동에 대하여 실험한 결과를 요약하면 다음과 같다. 1. 해양환경정보 원격시스템 해상국의 정보송신 테이터 모뎀의 기능은 원활한 작동을 하였으며, 육상국에 설치한 정보 수신용 노트북에서의 Quick BASIC 통신 프로그램의 작업은 정밀도가 높아 수온과 염분의 환경정보를 신속하고 정확하게 원격 계측할 수 있음을 확인하였다. 2. 실험 수역 축양조내에서의 4월~6월사이의 5m와 10m층의 평균 염분 농도는 34.2$\textperthousand$,34.4$\textperthousand$로 10m층이 녹은 경향을 나타내었다. 4. 축양조내 시험어 우럭(체장 25cm)의 평균 유영속도는 0.60m/sec로 체장대비 약2배의 빠르기를 나타내었고, 주간과야간의 평균 유영속도는 각각 0.60m/sec, 0.62m/sec를 나타내어 주간이 약간 보다 빠른 경향을 나타내었으며, 같은 기간 내에서의 5m층과 10m층의 평균 수온 변화 폭인 0.3$^{\circ}C$이내의 수온변화에서는 상관성을 발견하기 어려웠다. 5. 어군의 수직분포 변동이 가장 뚜렷했던 시간은 일출몰 전후였으며, 일몰을 전후하여 부상한 어군을 야간에는 주로 표층 가까이에 분포하고, 일출 40분전부터 하강하기 시작하여 일출과 함께 어군을 3m이하의 수심에 분포하였다. 이상의 결과로부터 양어장내에서의 수온, 염분등의 환경정보의 어군의 원격계측을 동시에 측정하여 고정도의 측정자료를 얻을 수 있음은 확인할 수 있었으나, 환경정보와 어군과의 정밀한 상관관계는 또 다른 환경요인에 대한 실험을 행하여야 규명도리 것으로 예상된다.

• 한국해양학회지:바다
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• 제17권4호
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• pp.262-269
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• 2012

국내 연안의 다양한 양식장의 퇴적물과 양식생물에 대하여 다이옥신류(PCDD/Fs), 다이옥신류피씨비(DLPCBs), 및 브롬화방염제(PBDEs)의 잔류수준을 조사하고 분포를 평가하였다. 양식장 퇴적물 중 PCDD/Fs, DLPCBs, PBDEs는 각각 0.03~2.9(평균${\pm}$표준편차, $1.2{\pm}0.89$) pg $WHO_{2005}$-TEQ $g^{-1}$ 건중량(dw), 불검출~1.1($0.09{\pm}0.19$) pg $WHO_{2005}$-TEQ $g^{-1}$ dw, 불검출~16.6($2.96{\pm}3.53$) ng $g^{-1}$ dw 수준으로 검출되었다. 또한 양식생물 체내 함유량은 각각 불검출~0.24($0.07{\pm}0.06$) pg $WHO_{2005}$-TEQ $g^{-1}$ 습중량(ww), 불검출~0.11($0.04{\pm}0.04$) pg $WHO_{2005}$-TEQ $g^{-1}$ ww, 0.05~0.29($0.13{\pm}0.06$) ng $g^{-1}$ ww 수준이었다. 국내 연안 중 동해안과 남해안에 위치한 양식장 퇴적물 중 총다이옥신류(PCDD/Fs+DLPCBs)와 PBDEs의 농도는 서해안보다 약 4~7배 높은 수준을 보였다. 퇴적물에서는 총다이옥신류에 대한 PCDD/Fs 기여율이 대부분(평균 94%)을 차지했지만, 양식생물에서는 DLPCBs가 약 33% 수준으로 퇴적물에 비해 높은 기여율을 보였다. PBDEs 중에서는 양식장 퇴적물과 생물 모두에서 BDE209가 가장 높게 검출되었다. 이전 연구와 비교했을 때, 국내연안 퇴적물과 양식생물 중 PCDD/Fs, DLPCBs, PBDEs의 잔류수준은 대체로 감소하는 추세에 있는 것으로 판단된다.

• 한국유기농업학회지
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• 제31권4호
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• pp.427-439
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• 2023

The silverleaf whitefly, Bemisia tabaci, is a major pest distributing worldwide damaging over 900 host plant species, and is highly resistant to chemical pesti- cides. Due to the high pesticide resistance of whitefly, there is a need for alternatives to chemical control. Entomopathogenic fungi are candidates for biological pesticide that can overcome the resistance problem of chemical pesticide. Therefore, in this study, we tested pathogenicity of the entomopathogenic fungi to select high insec- ticidal activity against whitefly. As a result, IPBL-C (Cordyceps fumosorosea) and IPBL-F (Metarhizium pinghaense) isolates showed high insecticidal activity against whitefly. Additionally, as a result of culturing the selected isolates on spent coffee grounds medium, the conidia of IPBL-F produced on coffee grounds medium showed five times higher heat stability after heat treatment at 45℃ for one hour than conidia produced on PDA medium.

• 한국의류산업학회지
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• 제15권4호
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• pp.635-641
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• 2013

This study examined the dye-properties of natural fabrics dyed with Coptis chinensis and Curcuma longa root fermented with fungi. The optimum culture conditions for the fermentation of microorganisms, the relationship between natural dye color and fermentation conditions were investigated. Two different medical herbs (ground to 80-100 mesh in size) were used as a natural dyeing source. Phellinus linteus (P. linteus), which can grow in different media, such as Agarmedium (only agar containing medium), maltose extract agar (MA) and potato dextrose extract agar (PDA) culture media, were isolated from the medium. P. linteus was confirmed to be the optimum microorganism for the fermentation of Coptis chinensis and Curcuma longa, and the MA medium was confirmed to be the best for culturing. When using the microorganism as the fermenting agent, $32^{\circ}C$ was found to be the optimum fermenting temperature for both natural colorants. Regarding the dyeing property of the fermented natural dye, silk was dyed quite darkly in an appearance by naked eye estimation and the K/S value in the color strength of silk reached a high level of 16 after the fermenting process. The washing fastness of dyed silk after treatment washing was reduced from 4 to under4 and indicates that dyed silk with fermented plant was not unsubstantial. The light fastness was 1 to 2, showing intended to maintain due to the fermentation process.

• Restorative Dentistry and Endodontics
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• 제28권5호
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• pp.419-424
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• 2003

이 연구의 목적은 원래의 치수조직과 유사한 조직을 재생하기 위한 pulp tissue engineering의 한 방법으로 건전한 조직으로부터 배양된 치수세포와 쥐의 조섬유세포(NIH 3T3 cell)를 Rat tail type I collagen solution에서 3차원적으로 관찰하기 위한 것으로, 콜라젠 젤의 수축량과 세포의 증식 량을 비교하였으며, 또한 마모된 사람치아의 표면과 배양용기에서 두 세포의 증식 량을 비교하여 다음과 같은 결과를 얻었다. 1. 콜라젠 젤에 NIH 3T3 세포를 배양한 경우 그 수축량은 최소였으나, 치수세포를 배양한 경우 그 수축량은 현저하였다. 2. 서로 다른 수의 치수세포를 콜라젠 젤에서 배양시킨 경우 세포 수가 많을수록 수축량이 증가하였으며, 세포가 없는 콜라젠 젤은 수축하지 않았다. 3. 치수세포를 콜라젠 젤에서 18일간 배양시킨 후 세포의 증식은 거의 없는 반면, NIH 3T3 세포는 계속 증식하였다. 4. 마모된 사람 치아 표면과 배양 용기에서 치수세포와 NIH 3T3세포를 배양한 경우 NIH 3T3세포가 치수세포에 비해 빠르게 증식 하였으며 , 특히 사람 치아의 표면에서 NIH 3T3세포가 현저히 빠른 증식을 보였다. 이상의 결과는 치수세포를 type I collagen gel에서 3차원 적으로 배양 후 치수조직의 재생을 유도하는 pulp tissue engineering에 관한 연구에 발판이 될 것으로 사료된다.

• 한국양식학회지
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• 제10권2호
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• pp.105-112
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• 1997

동해안에서 고품질의 굴 양식 생산과 어업인의 안정적인 소득 향상을 도모하고저 경남 하동에서 채묘한 굴을 강원도 주문진 연안에 연승수하식으로 이식한 후 1994년 8월부터 1995년 7월까지 어장환경과 수층별 성장시험을 실시하였다. 환경요인 조사결과 수온은 8.33-$25.62^{\circ}C,\;염분\;32.84-34.28\textperthousand,\;영양염류인\;인산염은\;0.09-0.40\mug$-at/l, 용존성 무기질소(DIN)는 0.32-3.12$\mu$g-at/l로 나타났다. 굴의 성장은 상층이 각고 88.7 mm, 중층 84.9 mm, 하층 78.0 mm로 하층에 비해 상층의 성장이 더 빨랐다. 수층별 각고(SH)에 대한 각장(SL)의 상대성장식은 상층 SL=0.5403 SH+8.5486 (r=0.9959), 중층 SL=0.5813 SH+3.7775 (r=0.9869), 하층 SL=0.5159 SH+6.8736 (r=0.9961) 이였다. 육질은 상층 13.24 g, 중층 12.68 g, 하층 10.96 g으로 상층에서 높게 나타났으며, 수층별 전중량(TW)에 대한 육중량(MW)의 상대성장식은 상층 MW=0.1933 TW+0.1051 (r=0.9973), 중층 MW=0.1915 TW+0.1894 (r=0.9984), 하층 MW=0.1650 TW+0.0558 (r=0.9983)으로 나타났다.

• 한국자원식물학회지
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• 제32권6호
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• pp.735-742
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• 2019

This study investigated a suitable method that could be applied for Asian chain fern [Woodwardia japonica (L. f.) Sm.] to propagate gametophytes and promote sporophyte formation. The gametophytes used in all experiments were obtained from germinated spores in vitro and were subcultured at 8-week intervals. The most appropriate media for gametophyte propagation was identified by culturing 300 mg of gametophyte in Murashige and Skoog (MS) basal medium (1/8, 1/4, 1/2, 1, 2), and Knop medium for 8 weeks. As a result, fresh weight of the gametophyte was increased by 56.7-fold on MS medium. Moreover, antheridium formation as well as gametophyte growth was improved on MS medium, especially. To improve the sporophyte formation ex vitro, 1.0 g of gametophyte was ground with distilled water and spread on eight combinations onto four different culture mediums, such as bed soil, peat moss, perlite and decomposed granite. Then generation and growth of sporophytes were investigated after cultivation for 10 weeks. As a result of this experiment, peat moss had a promotive effect of sporophyte formation at single-use and mixed culture soils. In particular, a mixture of bed soil, peat moss and perlite in a 1:1:1 ratio (v/v/v) led to the accelerated formation (782.5 ea/pot) and the frond growth of sporophytes. This included increases in length and width of fronds. However, promotive effect of gametophyte growth and sporophyte formation was not found at single-use and treatment with high ratio of bed soil.

• 물과 미래
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• 제10권2호
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• pp.81-90
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• 1977

The research is conducted to study the effect of the soil physical properties in the direct sowing culture on the water requirement, growth, and yield of rice with Early-Tongil at the experimental paddy field of the Sangju agri. and seri. junior college in Keyngbuk province from 6th May to 15th September in 1977. The experimental plots are designed with the four plots which are non-irrigated standard (plowing to 15cm), non-irrigated deep lowed (plowing to 25cm), irrigated standard (plowing to 15cm), and irrigated deep plowing plot (plowing to 25cm) and also each plot is repreated four times by the split plot design. The results obtained are summarized as follows: 1) The soil sample was ML to 10cm depth from ground surface and those from 10cm to 20cm depth and from 20cm to 30cm were CL. Each specific gravity was 2. 6, 2. 6 and 2. 7. 2) The weather during culturing period was the sane as the normal year of mean temperature. The precipitation was little and the distribution of it was disordered comparing to normal year but the heavy sunshine gave good effect on ripening. 3) Percolation loss was increased more at the non-irrigated plot than at the irrigated plot, and that of deep-plowed plot was increased more. 4) Grain yield per 10a. of non-irrigated deep plowed plot was 898kg, it was greated than others but there wa no significance. 5) A significant difference in the number of spikelets per panicle was found between nonirrigated plot and irrigated plot, and the number of spiklelets per panicle at the nonirrigated plot was more than that of the irrigated plot. But there was no significance in the other yield components-number of panicle, fertility abd ripening ratio-at the irrigated plot, ut weight of 100 grains was higher at non-irrigated plot. 6) Yield and growth at the deep plowed plot were higher than those of standard plowed plot.

• 한국작물학회지
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• 제27권1호
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• pp.94-98
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• 1982

일복내에서의 인삼의 생육실태를 파악하기 위하여 3~5년근의 경 및 엽의 건물중, 엽면적과 동지수(LAI), 비엽중(SLW) 등의 수직분포 및 조도의 변화를 재식위치별로 조사하였다. 1. 3년근에서 조도는 지상 10cm 정도에서 가장 낮았고 후행일수록 낮았다. 2. 3년근 엽면적은 상의 가운데 $\frac{1}[3}$부분이 넓었고 비엽중은 수광량이 많은 곳일수록 높았으나 엽면적 지수는 행별로 큰 차이가 없었다. 3. 4년근에서는 3년근보다 광환경이 악화되었고 엽면적 및 동지수는 행별 차이가 현저했다. 4. 5년근에서는 통로부분의 엽량이 많아진 것 외에는 대체적인 경향이 4년근과 비슷하였다. 5. 경엽의 건물중은 고년근일수록 현저히 증대되었고 잎의 건물중은 보다 상층에 분포하였다.