• 한국연초학회지
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• 제22권1호
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• pp.31-38
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• 2000

Seven flue-cured tobacco(Nicotiana tabacum) varieties and their 21 progenies in Fl and F2 generation, half diallel crosses(no reciprocal), were tested for the degree of heterosis and combining abilities in sucker producing character according to topping and suckering treatment. Significant difference in number and weight of sucker was observed among seven cultivars. The values of general combining ability(GCA) were greater than those of specific combining ability(SCA) in weight and number of sucker in F$_1$ generation. In topping and suckering plot, Cocker 86, McNair 944, and Va 115 revealed the significant negative GCA effects for number and weight of sucker, but By 104 and Speight G-28 did positive GCA. Without topping and suckering, GCA effects for sucker weight in Cocker 139 and Cocker 86 were negative and those for sucker number in Va. 115 were also negative. Negative SCA values in sucker weight could be observed in F$_1$ generation of Cocker 86 X BY 104 and Speiht G-28 X Cocker 86, in F$_2$ of Hicks $\times$ Speight G-28 and McNair 944 $\times$ BY 104 in topping and suckering plot. SCA in F$_1$ of McNair 944 X Cocker 86 and Speight G-28 X Cocker 139 was negative without topping and suckering. The value of heterosis in sucker producing character of F$_1$ hybrids was positive

• 한국조리학회지
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• 제17권4호
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• pp.295-306
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• 2011

본 연구는 4 종류{Mustard, herb & garlic, nuts, mushroom)의 crust를 제조하여 양등심 스테이크 위에 topping, 조리를 완성한 다음 관능검사를 실시 우수 시료를 선별하는 예비 실험을 하였다. 선별된 시료들을 1. Blank, 2. EC1(MU3), 3. EC2(HG2), 4. EC3(NC2), 5. EC4(MC3)로 명명한 다음, 다시 관능검사를 실시하여 어떠한 재료로 만든 crust가 가장 우수한 선호도를 가졌는지를 찾았다. 종속변수를 종합해 보면 crust를 topping한 4종류 시료가 대조군 Blank 보다 매우 우수한 수치를 나타내어 양등심 스테이크 요리에 crust가 곁들여지는 방법이 매우 효과적임을 말해준다. 그 중에서도 parsley 8g, rosemary 3g, basil 4g, olive oil 50g을 기본 함량으로 하여 빵가루 70% (115.5g)와 마늘 찹 30%(49.5.)를 함께 mixed 하여 제조 한 HG2의 시료가 최우수 crust로 평가 되었다.

• 한국식품영양과학회지
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• 제40권10호
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• pp.1384-1390
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• 2011

본 연구에서는 감국 에탄올 추출물이 조골세포의 증식 및 분화에 미치는 영향을 분석하여 골다공증 관련 식물성 에스트로젠으로써의 이용 가능성을 확인하고자 하였다. 감국 에탄올 추출물은 30～100 ${\mu}g/mL$ 농도 범위에서 조골세포의 증식을 유의적으로 증가시켰으며, 100 ${\mu}g/mL$ 농도에서 대조군 대비 최대 122% 세포성장을 나타내었다. 이러한 세포증식 유도는 estrogen antagonist인 tamoxifen 처리 시 상쇄되어 estrogen 유사효과에 의한 것으로 사료되었다. MC3T3-E1 세포의 분화에 미치는 영향을 살펴보고자 대표적 분화지표인 ALP 효소활성, collagen 함량, mineralization 수준을 측정한 결과, 10, 30 ${\mu}g/mL$ 농도에서 ALP 활성의 유의적 증가와 200 ${\mu}g/mL$ 농도에서 collagen 함량과 mineralization의 유의적인 증가를 확인하였으며, ALP 활성, collagen 함량 모두 tamoxifen 처리에 의해 증가 효과가 상쇄되어 estrogen 유사작용에 의한 것으로 사료된다.

• Journal of Animal Science and Technology
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• 제47권2호
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• pp.305-316
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• 2005

This study was conducted to determine the total amount and type of seleniwn (Se) in the Se-enriched mushroom and its spent mushroom composts (SMC), and to investigate the metabolism in relation to Se accwnulation in the mushroom. Mushrooms, Flammulina velutipes, used in this study were grown for 60 days by adding 2 rng of inorganic Se (Na2Se03) per kg of mushroom composts (MC) on as-fed basis and were compared with normal mushrooms grown on the non Se-supplemented Me. Total Se contents for Se-treated mushrooms were significantly increased (P < 0.0001) by 20-fold (4.51 $\mu$/ g of dry) compared to Se-untreated (0.23 $\mu$/ g of dry). On the contrary, organic Se ratio was significantly lower (P < 0.0001) in the Se-treated mushroom (72.3 %) than the Se-untreated one (100 %, not analytically detected of inorganic Se). Se distribution upon a length in the Se-treated mushrooms was the highest in the bottom part (6.86 $\mu$/ g of dry) near to MC, and top and middle parts were significantly lower (3.71 and 3.01 $\mu$/ g of dry, respectively; P < 0.001) than the bottom. In the SMC from Se-treated mushrooms, the significant amount of Se (5.04l1g/g of dry) was remained, but that from the Se-untreated mushrooms was significantly low (P$\mu$ / g of dry. Se-treated SMC showed a high ratio of organic Se (65.67 %), suggesting that the significant amount of inorganic Se in the SMC was converted to organic Se by mushroom mycelia. Prior to mycelia inoculation in the mushroom culture, the sterilization of MC brought approximately 18% of Se loss in the MC. Apparent and net accumulation rates (%) for Se into mushrooms were 14.81 and 10.14 %, respectively, resulting from the Se volatilization into the air via metabolic process of mushroom itself. The result of this study shows that inorganic Se addition to MC for mushroom improved the organic Se contents in the mushroom and SMC. This study showed the possibility that Se in Se-enriched mushroom and SMC could be utilized as Se sources of food for human as well as feed for livestock.

• 한국산업간호협회지
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• 제17권3호
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• pp.40-40
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• 2010

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2006년도 추계학술대회 논문집
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• pp.101-102
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• 2006

• 한국초전도저온공학회:학술대회논문집
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• 한국초전도저온공학회 2002년도 학술대회 논문집
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• pp.71-76
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• 2002

To achieve good cryogenic circumstances by Gifford-McMahon cryocooler, we have to constitute optimal conditions with various factors for G-M cryocooler. In this study, cool-down characteristics were presented with some factors using brass matrix mesh (1st stage) and Pb ball (2nd stage) as regenerator materials for the heat exchangers. The effects of the variations of Helium gas pressure and cycle frequency on the cooling capacity of G-M cryocooler are investigated experimentally. The presented results could be summarized as follows : 1) As the steady state pressure increases, 'no load temperature' decreases but cooling capacity increases. 2) It is confirmed that the characteristics of the specific heat of the regenerator materials agree well with the cool-down characteristics of 10 K cryocooler.

• 한국해안해양공학회:학술대회논문집
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• 한국해안해양공학회 2003년도 한국해안해양공학발표논문집
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• pp.164-169
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• 2003

The need fur higher grid resolution in climate models is often discussed (e.g. McAvaney et al.,2001) because a number of important oceanic processes are not resolved by the current generation of coupled models, e.g., boundary currents, mesoscale eddy fluxes, sill through flows. McClean et al., (1997) and Bryan and Smith (1998) have compared simulated mesoscale variability in simulations at several eddy-resolving resolutions to TOPEX/Poseidon and similar data. (omitted)

• 한국식품조리과학회지
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• 제28권3호
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• pp.311-318
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• 2012

The correlation between osteoporosis and reactive oxygen species (ROS)-induced oxidative stress was investigated. Thus, interest in food and plants with antioxidant effects that can reduce damage caused by ROS during bone metabolism is heightening. In this study, the antioxidant effect of Taraxacum mongolicum on proliferation and differentiation of MC3T3-E1 cells under H2O2-induced oxidative stress was studied to investigate its protective effect against oxidative stress and its availability as an antioxidant material related to bone diseases. As a result, total polyphenol and total flavonoid contents of T. mongolicum were 33.65 mg/g and 4.45 mg/g, respectively. The T. mongolicum extract increased proliferation of both MC3T3-E1 cells and differentiated osteoblasts under $H_2O_2$-induced oxidative stress conditions. In addition, two differentiation markers, alkaline phosphatase activity and mineralization level in the T. mongolicum extract, tended to increase. These results indicate that T. mongolicum extract suppressed the damage to osteoblasts under oxidative stress and that it is potential antioxidant materials for preventing bone diseases.

• 공업화학
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• 제4권1호
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• pp.188-195
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• 1993

생체의료용 재료로서 응용 가능한 고분자 전해질복합체와 그라프트 공중합체를 수용성 고분자 유도체로부터 제조하였다. 고분자 전해질 복합체들은 카르복시메틸 셀룰로오즈(CMC)와 젤라틴으로부터 제조하였다. 그라프트 공중합체는 메틸셀룰로오즈(MC)에 아크릴산을 그라프트반응시켜 합성하였고, 이 그라프트 공중합체와 젤라틴의 고분자 전해질 복합체도 제조하였다. 그라프트 공중합체와 고분자 전해질 복합체들을 화학가교법과 열처리법으로 제조시 최적조건들을 조사하였다. 예비실험 결과 이들 재료들이 생체의료용 재료로서의 응용 가능성이 있는 것을 알았다.