• 대한수학회보
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• 제47권3호
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• pp.623-632
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• 2010

A holomorphic function F defined on the unit disc belongs to $A^{p,{\alpha}}$ (0 < p < $\infty$, 1 < ${\alpha}$ < $\infty$) if $\int\limits_U|F(z)|^p \frac{1}{1-|z|}(1+log)\frac{1}{1-|z|})^{-\alpha}$ dxdy < $\infty$. For boundedness of the composition operator defined by $C_{fg}=g{\circ}f$ mapping Blochs into $A^{p,{\alpha}$ the following (1) is a sufficient condition while (2) is a necessary condition. (1) $\int\limits_o^1\frac{1}{1-r}(1+log\frac{1}{1-r})^{-\alpha}M_p(r,\lambda{\circ}f)^p\;dr$ < $\infty$ (2) $\int\limits_o^1\frac{1}{1-r}(1+log\frac{1}{1-r})^{-\alpha+p}(1-r)^pM_p(r,f^#)^p\;dr$ < $\infty$.

• East Asian mathematical journal
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• 제26권1호
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• pp.9-23
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• 2010

In this paper we generalize large-update primal-dual interior point methods for linear optimization problems in [2] to the $P_*(\kappa)$ linear complementarity problems based on a new kernel function which includes the kernel function in [2] as a special case. The kernel function is neither self-regular nor eligible. Furthermore, we improve the complexity result in [2] from $O(\sqrt[]{n}(\log\;n)^2\;\log\;\frac{n{\mu}o}{\epsilon})$ to $O\sqrt[]{n}(\log\;n)\log(\log\;n)\log\;\frac{m{\mu}o}{\epsilon}$.

• 한국식품과학회지
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• 제43권6호
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• pp.791-794
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• 2011

본 연구는 그람 양성균과 음성균인 S. aureus와 S. Typhimurium를 대상으로 시트랄의 농도와 pH에 따른 항균활성 특성 및 식품 적용 가능성을 조사하였다. 농도별 항균활성은 TSB에 시트랄을 0-1,000 ppm 농도로 처리하였으며, pH는 buffer를 이용하여 pH 4.0에서 pH 7.0로 조정하여 측정하였다. 시트랄 농도 별 항균활성 실험에서는 두 균주 모두 시트랄 농도가 높아질수록 항균활성이 증가하였다. S. Typhimurium는 250 ppm 처리구에서 대조구와 유의적 차이가 없었으나 S. aureus는 약 3 log 수준으로 감소되었다. pH에 따른 항균활성은 10분이 경과 후 S. aureus는 약 1-2 log의 감소효과를, S. Typhimurium는 약 2-5 log의 감소효과를 나타내었다. TSB와는 다르게 buffer 조건에서 그람 양성 균주인 S. aureus는 S. Typhimurium와 비교하여 pH 조건에 안정적인 경향을 나타내었다. 녹즙에 적용한 시트랄은 그람 음성균인 S. Typhimurium에 대한 항균활성은 미미하였으나 양성균인 S. aureus 에 대하여 농도가 증가할수록 효과적으로 항균활성이 증가하였다.

• 한국잠사곤충학회지
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• 제44권2호
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• pp.74-81
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• 2002

The optimal conditions for mycelial growth of P. linteus ASI 26011 were 25-30$^{\circ}C$ and pH 6.0, respectively. The mycelial growth of P. linteus was excellent on MCM medium. In case of carbon sources, the mycelial growth of P. linteus was best on the culture media that were contained with sucrose, mannose and glucose. Potassium nitrate and sodium nitrate were good for the mycelial growth of P. linteus as a nitrogen source. For comparison of the mycelial colonization of P. linteus on logs, several techniques of inoculation were tested; the sterilized short log inoculation, drilling inoculation and log-end sandwich inoculation. The mycelial colonization of P. linteus on logs was good in the treatment of sterilized short log inoculation, but poor in the traditional methods such as drilling inoculation and log-end sandwich. The initial mycelial growth and the full mycelial colonization of P. linteus were the best on 20 cm logs under the condition of 42% of moisture content in log. Also the initial mycelial growth of P. linteus was accelerated over 12 hours of sterilization. Burying method of logs after 5-6 months of incubation was the best for formation of basidiocarp of P. linteus. The formation of fruiting body of P. linteus was quite good in the cultivation house at the 31-35$^{\circ}C$ and over 96% of relative humidity.

• 대한수학회보
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• 제42권2호
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• pp.269-277
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• 2005

The tensor product $A{\bigotimes}B$ of Hilbert space operators A and B will be shown to be log-hyponormal if and only if A and Bare log-hyponormal. Some general comments about generalized hyponormality are also made.

• 한국환경과학회지
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• 제21권6호
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• pp.695-704
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• 2012

The application of disinfection models on the plasma process was investigated. Nine empirical models were used to find an optimum model. The variation of parameters in model according to the operating conditions (first voltage, second voltage, air flow rate, pH) were investigated in order to explain the disinfection model. In this experiment, the DBD (dielectric barrier discharge) plasma reactor was used to inactivate Ralstonia Solanacearum which cause wilt in tomato plantation. Optimum disinfection models were chosen among the nine models by the application of statistical SSE (sum of squared error), RMSE (root mean sum of squared error), $r^2$ values on the experimental data using the GInaFiT software in Microsoft Excel. The optimum model was shown as Weibull+talil model followed by Log-linear+ Shoulder+Tail model. Two models were applied to the experimental data according to the variation of the operating conditions. In Weibull+talil model, Log10($N_o$), Log10($N_{res}$), ${\delta}$ and p values were examined. And in Log-linear+Shoulder+Tail model, the Log10($N_o$), Log10($N_{res}$), $k_{max}$, Sl values were calculated and examined.

• 한국환경보건학회지
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• 제41권2호
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• pp.116-125
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• 2015

Objective: This study was carried out to use pine needles as a passive air sampler (PAS) for atmospheric polychlorinared dibenzo-p-dioxins/furans (PCDD/Fs). Methods: PCDD/Fs concentrations in ambient air ($C_a$, $pg/m^3$) and deposited pine needles ($C_p$, pg/g dry) were analyzed simultaneously from June 1 to December 31. Air samples were taken using two low volume PUF active air samplers with an overall average air volume of approximately $1,200Sm^3$. Pine needles were collected the end of December near the air sampler. PCDD/Fs was analyzed by HRGC/HRMs. Results: A good correlation was shown ($R^2=0.6357$, p=0.0001) between $C_a$ and $C_p$, but a better correlation ($R^2=0.7372$, p<0.0001) existed between the logarithm of octanol-air partitioning coefficient ($LogK_{oa}$) and Log($C_p/C_a$). The average PCDD/Fs sampling rates from air to pine needles were 0.045($0.018-0.185m^3/day-g\;dry$). Conclusion: It was found that pine needles can be used as PAS for atmospheric PCDD/Fs, and they are especially suitable for long time PAS compared to PUF disk PAS.

• Clinical and Experimental Pediatrics
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• 제48권11호
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• pp.1239-1243
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• 2005

목 적 : 체내에 축적된 철은 간에서 인슐린제거를 늦게 해 고인슐린혈증을 유발하며, 인슐린 작용을 저해시키고 이로 인해 당신생이 증가해 이차적으로 당뇨병을 유발할 수 있는 것으로 알려져 있다. 따라서 체내의 저장 철을 알 수 있는 가장 좋은 지표인 ferritin을 측정해 2형 당뇨병 발생과의 연관성을 조사하기 위한 연구를 시행하였다. 방 법 : 연세의료원에서 진료받고 있는 1형 당뇨 환자군 36명, 2형 당뇨 환자군 8명, 내당능 장애군 18명을 대상으로 하였으며, 2004년 학교 신체 검사에서 정상 대조군 29명을 선정하여, ferritin과 기타 혈청학적 및 임상적 검사를 실시하였다. 결 과 : 1) 정상대조군, 내당능 장애군, 2형 당뇨 환자군에서 평균 Log ferritin은 각각 $1.33{\pm}0.32$, $1.63{\pm}0.19$, $1.90{\pm}0.30$였으며 정상 대조군에 비해 내당능 장애군(P<0.01)과 2형 당뇨 환자군(P<0.01)에서 유의하게 증가되어 있었다. 2) Log ferritin과 각 변수인자와의 상관관계는 체질량 지수(P<0.01), 수축기 혈압(P<0.01), 공복시 혈당(P<0.01), 공복시 인슐린(P<0.01)과 유의한 관계를 보였다. 결 론 : 정상 대조군에 비해 내당능 장애군과 2형 당뇨 환자군에서 ferritin이 의미 있게 높았으며 ferritin의 증가는 인슐린 저항성과 2형 당뇨병 발생의 유발인자로서의 가능성을 시사한다.

• 한국수학교육학회지시리즈B:순수및응용수학
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• 제12권3호
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• pp.161-167
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• 2005

In this note we consider the projective property $\sigma(Re(T))\;=\;Re\;(\sigma$(T))$ of p-hyponormal operators and log-hyponormal operators.

• 한국식품과학회지
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• 제7권1호
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• pp.30-36
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• 1975

미쇄(微碎)한 치자분말(粉末)에서 Orange-Yellow 색소(色素)를 추출(抽出)하면 짧은 시간(時間)에서 $log\;t^{1{\cdot}15}$에 비례(比例)하였고 최적(最適) 추출시간(抽出時間)은 30분(分)이 선정(選定)되었으며 온도(溫度)가 상승(上昇)함에 따라 $log\;T^{3{\cdot}73}$에 비례(比例)하였고 최적(最適) 추출온도(抽出溫度)는 $40^{\circ}C$가 선정(選定) 되었으며 시료(試料) 0.1 g당(當) 용매량(溶媒量)의 증가(增加)에는 $log\;S^{3{\cdot}7}$의 색소(色素) 추출량(抽出量)을 나타냈고, 지방(脂肪)을 완전(完全)히 제거(除去)한 시료(試料)는 전혀 제거(除去)하지 않은 시료(試料)보다 $0.6(O.D\;448\;m{\mu})$만큼의 좋은 추출효과(抽出效果)를 보였다. 이들을 綜合하여, $P_{total}{\simeq}1.15\;log\;t+3.73\;log\;T+3.7\;log\;S-4X-6.4$ $P_{total}$: total amounts of extracted orange-yellow pigment from Gardenia. t: extraction time $(0.5{\sim}60\;min)$ T: extraction temperature $(5{\sim}50^{\circ}C)$ S: volume of solvent $(5{\sim}50\;ml)$ X: fat contents $(0{\sim}15%)$ 와 같은 수정(修正)된 실험식(實驗式)을 유도했다.