• Journal of Mushroom
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• v.17 no.1
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• pp.24-33
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• 2019

The physicochemical characteristics of oyster mushrooms (Pleurotus ostreatus) cultivated using liquid spawn (MLS) were compared with those of commercial mushrooms cultivated using solid spawn. The color intensity of the two types of mushrooms showed no remarkable difference. The hardness of the MLS-cultivated mushrooms was significantly higher, but their moisture content (86.80%) was significantly lower than that of the commercial mushrooms. Mineral contents in MLS-cultivated mushrooms (421.17 mg/100 g) were significantly higher than those in the commercial mushrooms (333.26-362.78 mg/100 g); in particular, the potassium (K) content was the most abundant in the former. The amino acid content in the MLS-cultivated mushrooms (4,695.22 mg/100 g) was about 1.4-2.0 times that in the commercial mushrooms. The essential amino acid contents and sum of aspartic acid and glutamic acid were higher in the MLS-cultivated mushrooms than in the commercial mushrooms. The ${\beta}-glucan$ content in the MLS-cultivated mushrooms was 1.1-2.3 times higher than that in the commercial mushrooms. The total phenol and flavonoid contents and the DPPH and ABTS radical-scavenging activities of the MLS-cultivated mushrooms were significantly higher than those of the commercial mushrooms; however, the reducing power showed an opposite trend. Therefore, MLS-cultivated mushrooms contained higher amounts of valuable components and higher antioxidant activities than commercial mushrooms.

• Proceedings of the KSCN Conference
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• 2004.12a
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• pp.100-100
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• 2004

• Proceedings of the PSK Conference
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• 2001.04a
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• pp.100.1-100.1
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• 2001

• Journal of Power System Engineering
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• v.9 no.3
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• pp.5-9
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• 2005

A study on the performance and exhaust emissions of diesel engine with reducing exhaust gas temperature is performed experimentally. In this paper, experiments are performed at engine speed 2200rpm, 2600rpm and load 0%, 25%, 50%, 75% and 100% by test engine with F.W. cooler passing through exhaust gas. Main measured & analyzed parameters are exhaust gas temperature, specific fuel consumption, NOx and soot emissions etc. The obtained conclusions are as follows. (1) Specific fuel consumption is the least value at load 75% and it is decreased 1.5% after remodeling F.W. cooler. (2) NOx emission is the most value at load 100% and it is increased 30.1% after remodeling F.W. cooler. (3) Soot emission is the most value at load 100% and it is decreased 20.0% after remodeling F.W. cooler.

• Journal of the Korean Society for Heat Treatment
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• v.20 no.5
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• pp.237-242
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• 2007

Friction coefficient of SM45C steel was surprisingly reduced with $H_2S$ and $C_3H_8$ gas during plasma sulf-nitriding. During the plasma sulf-nitriding, 100-700 sccm of $H_2S$ gas and 100 sccm of $C_3H_8$ gas were added and working pressure and temperature were 2 torr, $500-550^{\circ}C$, respectively. As $H_2S$ gas amount increased over 500 sccm, flake-like structures were developed on top of the nitriding layer and grain size of the nitriding layer were about 100 nm. The friction coefficient for the sample treated plasma sulf-nitriding under $N_2-H_2S$ gas was 0.4 - 0.5. The structure became more finer and amorphous-like along with $N_2-H_2S-C_3H_8$ gas and the nano-sized surface microstructures resulted in high hardness and significantly low friction coefficient of 0.2.

• Weed & Turfgrass Science
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• v.2 no.3
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• pp.312-317
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• 2013

The armyworm, Pseudaletia separata was occurred suddenly in a golf club in Namhae, Gyeongnam province in 2013. Thus, pathogenicity of seven species of entomopathogenic nematodes (Steinernema carpocapsae GSN1 strain, S. glaseri Dongrae strain, S. longicaudum Nonsan strain, S. monticolum Jiri strain and S. siamkayai, Heterorhabditis sp. Gyeongsan strain, and H. bacteriophora Hamyang strain) was evaluated against armyworm on tall fescue in pot and golf course to control this pest environmentally friendly. The pathogenicity against P. separata larvae was significantly different depending on nematode species. The corrected mortality of fifth instar of P. separata was 100% in the treatment with S. carpocapsae GSN1 in 7 days in tall fescue pot. However, there was not different in the mortality of fifth instar of P. separata (80 to 100%) at the rate of 385 to 6,160 infective juveniles (Ijs) ($=2.5{\times}10^2$ to $4{\times}10^5Ijs/m^2$) of S. carpocapsae GSN1 strain in each pot. Corrected mortality of P. separata was 65 and 60% at the rate of $10^5Ijs/m^2$ of S. carpocapsae GSN1 and S. longicaudum Nonsan strain, respectively in the tall fescue of golf course.

• Journal of the Korean Crystal Growth and Crystal Technology
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• v.6 no.3
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• pp.377-385
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• 1996

ZnS/ZnSe superlattices were prepared on GaAs (100) substrates by hot wall epitaxy, an the structures were analyzed using x-ray diffraction. It is shown that the x-ray diffraction of the strained superlattice gives very useful information about the thickness of each layer, strain, interdiffusion, and the fluctuation of the superlattice period. Interdiffusion length of the S and Se is estimated to be less than $2\;{\AA}$.

• Korean journal of food and cookery science
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• v.9 no.4
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• pp.289-292
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• 1993

The effect of sugar alcohols in the preparation of acceptable low methoxyl pectin(LMP) jellies were studied. Sensory scores analysis, Hunter's color parameters and texture profile analysis using universal testing machine were performed. The composition of sweetners used in this study were 100％ sucrose, 75％ sucrose and 25％ maltitol, 50％ sucrose and 50％ maltitol, and 50% sucrose, 25％ maltitol, 12.5％ sorbitol'and 12.5% mannitol. LMP jellies with 100％ sucrose showed the strongest sweetness among them. Other sensory characteristics of LMP jellies were regarded as same. Hunter's value of lightness, redness and yellowness of 100％ sucrose jellies and jellies substituted with maltitol up to 25％ were not significantly different, but those of LMP jellies substituted with 50％ sugar alcohols were higher(p<0.01) than other 3 types of jellies. As substitution ratio was increased, springiness and chewiness were lower(p<0.01). Fracturability(p<0.01) and hardness(p<0.05) of jellies made of 100% sucrose and 75％, sucrose and 25% maltitol showed higer value than the other jellies. Springiness of jelles sweetened with sucrose and 3 sugar alcohols was the highest(p<0.05). Replacement of sucrose by sugar alcohol did not influenced on gumminess and cohesiveness of LMP jellies.

• Korean Journal of Food Science and Technology
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• v.38 no.4
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• pp.599-603
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• 2006

This study investigated the efficacy of common sanitizers and disinfectants on E. coli, Staphylococcus aureus, Listeria monocytogenes and Salmonella Typhimurium spiked on the surface of the main processing machine. All four microorganisms were greatly reduced by hydrogen peroxide (1,100 ppm), iodophors (25 ppm) and quarternary ammonium compounds (200 ppm). The reduction levels of E. coli, S. aureus, S. Typhimurium, and L. monocytogenes were 3.5, 3.4, 3.0, and 2.8 $log_{10}CFU/100cm^2$, respectively. Peroxy compounds and quaternary ammonium compounds can be applied to animal food manufacturing plants as a good sanitizer.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.05a
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• pp.43-44
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• 2018

여객의 안전운항을 위해, 선내 센서데이터 수집장치를 설치하여 선박의 항해/기관 데이터를 수집하고, 수집된 데이터를 이용하여 긴급상황레벨 결정 및 위기대응 가이던스를 제공한다. 선박에서 수집된 데이터는 S-100 라이브러리를 통해 육상의 Marine Cloud로 전송하고, 육상시스템에서 판별한 위기대응 가이던스도 S-100 라이브러리를 통해 선박으로 전송하는 시스템을 구현하였다.