• 한국수산과학회지
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• 제40권4호
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• pp.220-225
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• 2007

The succession of marine benthic algae and the restoration of an artificial seaweed forest on a porous type (shaped half saw teeth) artificial reef at Jeju island, Korea was studied. Young thalli of Sargassum horneri and Ecklonia cava were attached to different artificial substrates. In general, the succession on the artificial reefs led from filamentous algae to perennial algae and involved more than 25 species that are useful fishery resources, including E. cava. Coralline algae were dominant on the artificial reefs at the Kangjung site. The maximum algal biomass on the artificial reef in October 2005 was $1,990g/m^2$ at Biyang. In conclusion, a climax community and seaweed forest can be attained one year after the substrate is constructed.

• 환경생물
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• 제33권3호
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• pp.352-359
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• 2015

본 연구는 낙동강 본류에 서식하는 Pectinatella magnifica의 출현양상을 조사하기 위해 발생시기인 2014년 7월~11월 동안 기본 분포조사와 출현밀도가 높은 지역을 대상으로 집중조사를 실시하였다. 그 결과, 낙동강 본류 구간 내 Pectinatella magnifica의 부착기질은 인공적으로 형성된 기질에서 12.3%, 자연기질에서 87.7%로써 자연기질에서 매우 높게 확인되었으나 자연기질에 포함된 식물군락의 특정 종에 따른 선호하는 정도는 유의한 차이를 보이지 않았다. 반면 본 조사 결과에서는 고착대상으로 하는 기질의 분포 정도의 차이는 P. magnifica의 분포 차이에 영향을 미치고 있음을 보여주었다. 그러므로 태형동물이 선호하는 출현기질의 증가는 P. magnifica의 성장 및 분포에 영향을 미치는 요인 중 하나로써 작용될 것으로 사료된다.

• 한국토양비료학회지
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• 제42권별호
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• pp.195-211
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• 2009

• 생태와환경
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• 제42권1호
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• pp.124-133
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• 2009

남한강 상류인 섬강수계의 부착규조 군집 및 출현종의 특성을 알아보고자 하천방향으로 수계 내 7개 지점을 선정하고, 자연기질과 인공기질에서 부착규조의 유입능(RIA) 및 기초환경조사를 실시하였다. 조사결과, 부착 규조 군집 종은 모든 기질에서 N. amphibia, Nav. subminuscula, C. minuta 등이 우점하였고, N. amphibia, C. minuta는 전 지점에 고르게 분포하였다. 조사기간 중 가장 높은 유입능을 보인 종은 Nav. subminuscula, C. silicula로 RIA 15 이상이었다. 모든 조사지점에서 높은 유입능을 보인 종은 복배선 형태를 보였으며, 각 기질에서 55% 이상의 높은 밀도를 나타냈다. 비교적 높은 유입능을 보인 N. fonticola, G. quadripunctatum은 각각 주변수의 영양염(p<0.05)과 20일 동안 배양한 인공기질에(p<0.05) 높은 상관성을 보였다. 이상의 결과를 종합하면 섬강수계의 부착규조 유입능은 조류밀도와 영양염에 의해 영향을 받으며, 인공기질의 배양기간은 20일이 적당한 것으로 판단되었다.

• 한국미생물·생명공학회지
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• 제9권3호
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• pp.109-116
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• 1981

Three edible species and one species utilized as drug were selected from wild mushrooms collected from mountains and fields throughout Korea during 1977 to 1979 for artificial cultivation. The media, MES for G. lucidum, MHS for P. rudis and MSES and MHS for P. adipose and Pluteus sp. were selected. The range of optimum pH was 4.0 to 5.0 in citric acid-sodium phosphate dibasic for the tested species. The range of optimum temperature for the mycelial growth of G. lucidum and P. adiposa was 25 to 3$0^{\circ}C$ and 30 to 35$^{\circ}C$ for P. rudis and Pluteus sp. For the moisture content 75 to 80% (w/w) in the substrates, the mycelial growth of most tested species was rapid. As the spawning substrates, poplar sawdust for G. lucidum and Pluteus sp., oak sawdust for P. rudis and wheat for P. adipose were selected, respectively. In this experiment, the fruit bodies of all tested species were appeared. Among them, G. lucidum for medicinal purpose and P. adiposa and Pluteus sp. for sources of new edible mushrooms seems to be possible. However, the sporophores of P. rudis were not adequate as an edible mushroom for the commercial due to the leathery flesh.

• 한국표면공학회지
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• 제46권5호
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• pp.197-207
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• 2013

In the midst of increasing importance of modern cultural assets, especially, most modern bronze objects are exposed to outdoor environment, and as the objects are corroded steadily due to environmental factors the objects lost their original colors on the surface. We performed artificial patinas on the bronze sample per each color of red, black and green and checked cuprite and tenorite which are detected from actual bronze corrosion by analyzing the components. In addition, we applied the existing corrosion removal methods of grinder and sand blaster on a similar sample of bronze mirror per injection pressure and performed comparative analysis on the result with Nd:YAG laser. As a result of Nd:YAG laser cleaning artificial patina from bronze samples, all of the patinas were removed by laser wavelength 1064 nm better than 532 nm. Upon applying to a similar sample of bronze mirror, the artificial patina could be selectively removed from substrates without surface damage when Nd:YAG laser was conducted other than the existing removal method, and so it showed the possibility of application.

• 한국균학회지
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• 제9권2호
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• pp.67-72
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• 1981

1. 사철느타리버섯(Pleurotus florida)는 퇴적시(堆積時)에 미강(米糠)을 볏짚건물중(建物重)의 5%로 첨가(添加)하여 퇴비(堆肥)더미 정상부(頂上部)의 온도(溫度)가 $60^{\circ}C$일 때 3회퇴적(回堆積)한 발효(醱酵)볏짚부지(部地)에서 가장 높은 자실체(子實體) 수확(收穫)을 얻을 수 있었다. 2. 사철느타리버섯의 종균재식(種菌栽植)재직량(栽直量)을 볏짚건물중(建物重)의 10%로, 부지(部地)와 혼합재식(混合栽植)하였을 때 자실체(子實體) 수량(收量)이 가장 높았다. 3. 한국(韓國)에서 사철느타리버섯의 재배기간(栽培期間)은 9월(月)부터 익년(翌年) 7월중순(月中旬)까지였다.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2009년도 하계학술대회 논문집
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• pp.375-375
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• 2009

For many large-scale applications of high-temperature superconducting materials, large critical current density($J_c$) in high applied magnetic fields are required. A number of methods have been reported to introduce artificial pinning centers(APCs) in $YBa_2Cu_3O_{7-\delta}$(YBCO) films for enhancement of their $J_c$. We report measurements of critical current in $YBa_2Cu_3O_{7-\delta}$ films deposited by PLD on $SrTiO_3$ substrates decorated with Au nanoparticles. Au nanoparticles were synthesized on STO substrates with self assembled monolayer. Microstructural analysis of the obtained YBCO films was performed by using cross-section transmission electron microscopy(TEM). Phase and textural analysis was done using X-ray diffraction. The surface morphology and surface roughness(Ra) of the layers was measured by atomic force microscopy(AFM).

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2005년도 추계학술대회 논문집 Vol.18
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• pp.9-10
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• 2005

We report on the fabrication and characterization of self- and artificially-controlled ZnO nanostructures have been investigated to establish nanostructure blocks for ZnO-based nanoscale device application. Systematic realization of self- and artificially-controlled ZnO nanostructures on $SiO_2/Si$ substrates was proposed and successfully demonstrated utilizing metalorganic chemical vapor deposition (MOCVD) in addition with a focused ion beam (FIB) technique. Widely well-aligned two-dimensional ZnO nanodot arrays ($4{\sim}10^4$ nanodots of 130-nm diameter and 9-nm height over $150{\sim}150{\mu}m^2$ with a period of 750 nm) have been realized by MOCVD on $SiO_2/Si$ substrates patterned by FIB. A low-magnification FIB nanopatterning mode allowed the periodical nanopatterning of the substrates over a large area in a short processing time. Ga atoms incorporated into the surface areas of FIB-patterned nanoholes during FIB engraving were found to play an important role in the artificial control of ZnO, resulting in the production of ZnO nanodot arrays on the FIB-nanopatterned areas. The nanodots evolved into dot clusters and rods with increasing MOCVD growth time.

• Mycobiology
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• 제35권1호
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• pp.6-10
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• 2007

Present experiments were conducted to determine the possibility of artificial culture with various sawdust of P. gilvus. The pH value was 6.0 of oak sawdust, 6.5 of mulberry sawdust, 6.6 of elm sawdust, 6.3 of acacia sawdust and 6.1 of apple tree sawdust. Mycelial density on elm sawdust and acacia sawdust were lower than those of oak sawdust, and apple sawdust. Weight of fresh fruiting body showed that 179 g on oak tree, 227 g on oak sawdust, 21 g on elm tree, 76 g on elm sawdust, 106 g on apple tree, and 170 g on apple sawdust. Among them, the yield of oak substrates was the highest whereas acacia sawdust was the lowest, and it is concluded that the yields of sawdust substrates were higher than log substrates. P. gilvus grown on various sawdusts and logs used in this study have shown similar in anti-tumor activity against P388.