• 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.

• 한국재료학회:학술대회논문집
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• 한국재료학회 2003년도 추계학술발표강연 및 논문개요집
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• pp.176-176
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• 2003

The effects of oxide thickness and gate length of MgO/GaN metal oxide semiconductor field effect transistors (MOSFETs) on I-V, threshold voltage and breakdown voltage characteristics were examined using a drift-diffusion model. The saturation drain current scales in an inverse logarithmic fashion with MgO thickness and is < 10$^{-3}$ A.${\mu}{\textrm}{m}$$^{-1}$ for 0.5 ${\mu}{\textrm}{m}$ gate length devices with oxide thickness > 600 $\AA$ or for all 1 ${\mu}{\textrm}{m}$ gate length MOSFETs with oxide thickness in the range of >200 $\AA$. Gate breakdown voltage is > 100 V for gate length >0.5 ${\mu}{\textrm}{m}$ and MgO thickness > 600 $\AA$. The threshold voltage scales linearly with oxide thickness and is < 2 V for oxide thickness < 800 $\AA$ and gate lengths < 0.6 ${\mu}{\textrm}{m}$. The GaN MOSFET shows excellent potential for elevated temperature, high speed applications.

• 한국균학회지
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• 제17권1호
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• pp.27-30
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• 1989

팽나무버섯 ${\beta}-isopropylmalate$ dehydrogenase의 유전자가 PBR322에 크로닝된 백터를 이용하여 사철느타리버섯 Leucine 영양요구성 균주를 형질전환 시켰다. 형질전환율은 저조하였으나 형질전환된 균총은 버섯 최소배지에서 다소 느리지만 생육할 수 있었다. 형질전환은 Southern hybridization과 형질 전환된 사철 느타리버섯 염색체 DNA를 다시 대장균에 형질전환시켜 확인하였다.

• Wind and Structures
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• 제8권3호
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• pp.179-196
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• 2005

This paper describes the application of a wireless data acquisition system to monitor wind pressures and velocities with absolute pressure sensors and an anemometer. The system was developed for future deployment, as part of a research effort currently underway to instrument coastal homes in Florida to monitor roof wind pressures during hurricanes. The proposed wireless system will replace the current system that involves a large amount of hardwired connections from the sensors to the data processing unit that requires labor intensive wiring and preparation of the home. The paper describes comparison studies and field tests to assess the performance of the system. The new system offers the advantages of light hardware, ease of installation, capacity for 48 hours of continuous data acquisition, good frequency and amplitude responses, and a relatively simple maintenance. However, the tests also show that the shape of the shell that has been previously used to protect the sensors might interfere with the proper measurement of the pressures.

• 한국균학회지
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• 제16권2호
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• pp.95-100
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• 1988

한국에 자생하는 느타리버섯 균주중 지역별로 기주가 다른 균주들을 수집하여 Esterase 동위효소와 Leucine amino peptidase 동위효소를 등전점 전기영동으로 균사와 자실체 부위별로 비교하였다. Pleurotus ostreatus의 Esterase 밴드 패턴은 균사와 자실체가 많은 차이가 있었으나 자실체중 Primordia, 갓, 줄기 등의 isozyme 패턴은 유사하였다. P. ostreatus, P. cornucopiae, P. florida의 Esterase 밴드 패턴에 많은 차이가 있어 종간 균주구별이 가능하였다. Leucine Amino Peptidase 밴드는 P. ostreatus, P. cornucopiae, P. florida 간에 뚜렷이 구별지을 수 없었으며, 균사와 자실체 간에는 약간의 밴드 패턴의 차이가 있었다.

• 방사선산업학회지
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• 제6권2호
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• pp.181-188
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• 2012

A mushroom mutant with increased cellulolytic activity was developed through radiation mutagenesis. The homogenized hypha suspension of Pleurotus florida was exposed to gamma radiation ($^{60}Co$, AECL) at the dose of $LD_{99}$ (0.51 kGy, $D_{10}$; 0.26 kGy). Among 16 mutants, Pf CM4 showed 17.24% more cellulolytic activity than the wild type (p<0.05). It was observed that Pf CM4 can utilize all kinds of carbon sources tested for their mycelia growth. Starch, xylan, and glucose favourably supported the radial mycelia extension. Yeast extract and $NH_4NO_3$ have been recorded as the best organic and inorganic nitrogen sources, respectively. Pf CM4 was found to grow significantly faster, even at high temperature ($30^{\circ}C$), than wild type (p<0.05), and the optimal pH was 5.5~6.5. This study reveals that the mutant Pf CM4 could be employed for the effective recycling of cellulosic wastes, in addition to mushroom farming.

• 한국균학회지
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• 제13권1호
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• pp.1-10
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• 1985

고등균류의 유전연구와 균주개발을 위한 원형질체 조작의 기초 연구로서 몇가지 주요 버섯류의 원형질체 분리에 관하여 실험한 결과를 요약하면 다음과 같다. 1. P. ostreatus와 V. volvacea의 원형질체 분리에 알맞는 효소는 ${\beta}-D-Glucanase+Novozym234+Snail enzyme$이었으며, 삼투압 조절제로는 0.6M $MgSO_{4}$였고, 이들을 Na-Maleate buffer로 pH 5.8에 조절하여 사용했을때 가장 많은 원형질체를 생성하였다. 2. P. ostreatus, P. florida, P. sajor-caju는 MCM에서 각각 4, 5, 3일간 배양한 균사체에서, L. edodes, F. velutipes는 PDA 배지에서 각각 2일과 5일간 배양했을때 가장 효과적이었으며, A. bisporus와 V. volvacea는 분리량이 극히 적었다. 3. V. volvacea의 균사체에 2-mercaptoethanol의 전처리는 효과가 없어 원형질체 분리는 적었으며, 액체배양 보다는 agar 배지상의 cellophan방법이 원형질체 분리에 있어서 효과가 좋았다. 4. 균사체에 효소처리후 1시간 부터 원형질체가 분리되면서 점차 증가하여 9시간경에 가장 많은 원형질체를 얻었으며, 시간이 갈수록 액포화현상으로 원형질체의 크기가 커졌다.

• JSTS:Journal of Semiconductor Technology and Science
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• 제5권2호
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• pp.131-135
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• 2005

The effect of different surface passivation films on blue or green (465-505 nm) InGaN/GaN multi-quantum well light-emitting diodes (LEDs) die were examined. $SiO_2$ or $SiN_x$ deposited by plasma enhanced chemical vapor deposition, or $Sc_2O_3$ or MgO deposited by rf plasma enhanced molecular beam epitaxy all show excellent passivation qualities. The forward current-voltage (I-V) characteristics were all independent of the passivation film used, even though the MBE-deposited films have lower interface state densities ($3-5{\times}10^{12}\;eV^{-1}\;cm^{-2}$) compared to the PECVD films (${\sim}10^{12}\;eV^{-1}\;cm^{-2}$), The reverse I-V characteristics showed more variation, hut there was no systematic difference for any of the passivation films, The results suggest that simple PECVD processes are effective for providing robust surface protection for InGaN/GaN LEDs.

• ALGAE
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• 제35권1호
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• pp.91-106
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• 2020

Incorporating renewable fuel into practice, especially from algae, is a promising approach in reducing fossil fuel dependency. Algae are an exceptional feedstock since they produce abundant biomass and oils in short timeframes. Algae also produce high-valued lipid products suitable for human nutrition and supplement. Achieving goals of producing algae fuels and high-valued lipids at competitive prices involves further improvement of technology, especially better control over cultivation. Manipulating microalgae cultivation conditions to prevent contamination is essential in addition to promoting optimal growth and lipid yields. Contamination of algal cultures is a major impediment to algae cultivation that can however be mitigated by choosing extremophile microalgae. This work describes the isolation of alkali-tolerant / alkaliphilic microalgae native to South Florida with ideal characteristics for cultivation. For that purpose, water samples from Lake Okeechobee were inoculated into Zarrouk's medium (pH 9-12) and incubated for 35 days. Selection resulted in isolation of three strains that were screened for biomass and lipid accumulation. Two alkali-tolerant algae Chloroidium sp. 154-1 and Chlorella sp. 154-2 were poor lipid accumulators. One of the isolates, the diatom Fistulifera sp. 154-3, was identified as a lipid accumulating, alkaliphilic organism capable of producing 0.233 g L^-1 d^-1 dry biomass and a lipid content of 20-30% dry weight. Lipid analysis indicated the most abundant fatty acid within Fistulifera sp. was palmitoleic acid (52%), or omega-7, followed by palmitic acid (17%), and then eicosapentanoic acid (15%). 18S rRNA phylogenetic analysis formed a well-supported clade with Fistulifera species.

• Toxicological Research
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• 제32권1호
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• pp.35-46
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• 2016

No-flow ischemia occurs during cardiac arrest, hemorrhagic shock, liver resection and transplantation. Recovery of blood flow and normal physiological pH, however, irreversibly injures the liver and other tissues. Although the liver has the powerful machinery for mitochondrial quality control, a process called mitophagy, mitochondrial dysfunction and subsequent cell death occur after reperfusion. Growing evidence indicates that reperfusion impairs mitophagy, leading to mitochondrial dysfunction, defective oxidative phosphorylation, accumulation of toxic metabolites, energy loss and ultimately cell death. The importance of acetylation/deacetylation cycle in the mitochondria and mitophagy has recently gained attention. Emerging data suggest that sirtuins, enzymes deacetylating a variety of target proteins in cellular metabolism, survival and longevity, may also act as an autophagy modulator. This review highlights recent advances of our understanding of a mechanistic correlation between sirtuin 1, mitophagy and ischemic liver injury.