• 한국응용과학기술학회지
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• 제22권4호
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• pp.339-348
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• 2005

On the analysis of triacylglycerol (TG) from the kernels of Acanthopanax sessiliflorus by reversed phase-HPLC, it was separated into three main fractions of PN 44, 46 and 48, according to partition number (PN). On the contrary, it could be clearly classified into seven fractions of SMM, MMM, SMD, MMD, SDD, MDD and MDT by silver ion-HPLC by the number of double bond in the acyl chains of TG species. But resolution of so-called critical pairs of TG molecular species such as molecular pairs of $P_eLL$ $[C_{18:1{\omega}12}/(C_{18:2{\omega}6)2}]$ and OLL $[C_{18:1{\omega}9}/(C_{18:2{\omega}6)2}]$ and OOL $[(C_{18:1{\omega}9)2}/C_{18:2{\omega}6]$, and $P_eP_eL$ $[(C_{18:2{\omega}12)2}/C_{18:1{\omega}6]$ was not achieved $(P_e;$ petroselinic acid, L; linoleic acid, O; oleic acid). On the other hand, TG extracted from Aralia continentalis kernels were also fractionated into seven groups of SSM, SMM, MMM, SMD, MMD, SDD and MDD (S; saturated acid, M; monoenoic acid, D; dienoic acid) by silver ion-HPLC, although it's were classified into three groups of PN 44, 46 and 48 by reversed phase-HPLC. The fractions of SMM, MMM, MMD and MDD were divided into two subfractions, respectively; the fractions of SMM, MMM, MMD and MDD were resolved into the subfraction of $PP_e/P_e$ and POO (critical pairs from each other), that of $P_e/P_e/P_e$ and OOO, that of $P_e/P_e/L$ and OOL, and that of $P_e/L/L$ and OLL.

• 대한수학회보
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• 제40권3호
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• pp.509-520
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• 2003

Let p be a prime number, $Q_{p}$ the field of p-adic numbers, K a finite extension of $Q_{p}$, $\bar{K}}$ a fixed algebraic closure of K and $C_{p}$ the completion of K with respect to the p-adic valuation. Let E be a closed subfield of $C_{p}$, containing K. Given elements $t_1$...,$t_{r}$ $\in$ E for which the field K($t_1$...,$t_{r}$) is dense in E, we construct integral bases of E over K.

• 아동학회지
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• 제18권2호
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• pp.241-265
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• 1997

The purpose of this study was to investigate effects of Parent Effectiveness Training (P. E. T.) on (1) parental awareness and verbal control patterns of mothers and (2) the relationship between parental awareness and verbal control patterns of mothers. The subjects were 43 mothers whose children were in 3rd, 4th, 5th, and 6th grades in one of two elementary schools in the City of Seoul. Mothers who participated in a P. E. T. class were assigned either to an experimental or a control group. Mothers in the experimental group received P. E. T. during the study; those in the control group received it after the study. Instruments were the Parental Awareness Interview (Newberger, 1980) and the revised Verbal Control Patters (Gumperz, 1973) for mothers. The data were analyzed by t-tests and Pearson's correlations. The results showed that (1) P. E. T. influenced parental awareness of mothers, and this change was maintained one month after completion of the P. E. T. class. (2) Mothers' verbal control patterns were changed by P. E. T. Specifically, mother' imperative and positional verbal control patterns decreased while personal verbal control patterns increased after P. E. T. (3) P. E. T. was negativeiy related to mother's imperative and positional verbal control patterns but positively related to personal verbal control patterns.

• 한국통신학회논문지
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• 제35권12C호
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• pp.965-970
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• 2010

한 셀에 2비트를 저장하는 낸드 플래시 메모리에서는 한 셀에 저장되는 전압의 양을 4-레벨로 나누어 데이터를 구분한다. 이 4-레벨을 낮은 전압부터 각각 E, P1, P2, P3라고 할 때, 인접한 두 셀이 각각 E와 P3 레벨로 저장하게 되면, 통계적으로 이 부분에서 많은 데이터의 오류가 발생한다. 따라서 본 논문에서는 인접한 두 셀의 값이 E와 P3의 패턴이 연속해서 나오지 않게 하는 부호화 방법을 통해 연속된 셀에서 E와 P3가 붙어 나오는 패턴을 제거한다. 본 논문에서는 5심볼과 6심볼의 코드워드일 때의 부호/복호 방법을 소개한다. 5심볼을 만드는 부호화 방법은 입력 데이터가 9비트이며, 패리티는 1비트이고 부호율은 0.9 (9/10) 이다. 또한, 6심볼을 만드는 부호화 방법은 입력 데이터가 11비트 이며, 패리티는 1비트이며, 부호율은 0.916 (11/12) 이다.

• 한국융합학회논문지
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• 제11권8호
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• pp.269-278
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• 2020

이 연구는 비만군과 비교해 비만을 동반한 고혈압 환자에서 좌심실 이완기 기능 및 운동능력의 차이를 평가하고 좌심실 이완기 기능이 운동능력에 미치는 영향을 알아보고자 하였다. 2016년 1월부터 2019년 8월까지 경기도 지역종합병원을 내원한 남성 308명, 여성 197명을 대상으로 하였다. 고혈압과 비만 유무에 따라 대상자를 4그룹으로 나누었다. 비만 단독환자보다 비만을 동반한 고혈압 환자에서 이완기 기능을 나타내는 A파와 E/E'파는 높았으며, E'파는 낮았다(각각 p<0.001). 운동능력은 비만군보다 비만을 동반한 고혈압 환자에서 대사당량과 운동지속시간이 낮았다(각각 p<0.001). 비만을 동반한 고혈압 환자에서 E/A 비율은 대사당량에 정적인 영향을 미쳤다(p=0.025). 또한 E/A 비율은 운동지속시간에 정적인 영향을 미치며(p=0.026), E/E'파는 부적인 영향을 미치는 것으로 나타났다(p=0.046).

• 한국의류산업학회지
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• 제22권6호
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• pp.844-852
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• 2020

This study is to understand the preferences of pilots, flight engineers and crew who work in the same aircraft but are exposed to different working environments and perform different mission operations in order to develop an ergonomic flight jacket. Based on a preliminary investigation, a survey of 107 pilots and 36 flight engineers and crew was conducted. The results are as follows; Pilots can control the temperature inside the cockpit, so they are less exposed to the cold when working, while flight engineers and crew are exposed to the cold more because they have many external tasks. The reason for the problem of the current flight jacket was a difference in ranking between two groups, but the highest ranking was poor dimensional suitability due to the habit of wearing layers of clothing. As a result of preferred design, there were significant differences between groups in the item of overall style. Pilots preferred a bomber jacket style(P:68.2%, E&C:44.4%), on the other hand, flight engineers and crew preferred a field jacket style(P:26.2%, E&C:55.6%)(p<.01). They preferred a stand collar(P:71.0%, E&C:86.1%), a fastener slider for a front fastening(P:62.6%, E&C:61.1%), fastener tape cuffs(P:54.2%, E&C:47.2%), a jacket with a softshell(P:86.9%, E&C:83.3%), fleece as softshell material(P:88.8%, E&C:69.4%), and fastener sliders as a attaching method(P:69.2%, E&C:61.1%). A hem fastening will be selected differently according to the overall style of outshell. Additionally, they preferred more than 5ea pockets(P:51.4%, E&C:44.4%), fastener sliders as pocket's fastenings(P:48.6%, E&C:61.1%), armpit ventilations(P:62.9%, E&C:58.5%). The results of above will be considered to design an ergonomic flight jacket.

• 한국식품위생안전성학회지
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• 제11권4호
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• pp.291-297
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• 1996

The role of cytochrome P-450 2E1 (P450 2E1) in the early phase of alcoholic fatty liver was examined. Female rats were pretreated with either allyl sulfide (200 mg/kg, po), disulfiram (500 mg/kg, po), YH 439 (250 mg/kg, po) or pyrazine (200 mg/kg/day$\times$2 days, ip). Marked changes in carbon tetrachloride-induced hepatotoxicity and caboxyhemoglobin (COHb) elevation due to dichloromethane administration were observed in rats treated with one of the P450 2E1 modulators. A single dose of ethanol (6 g/kg, po) increased the hepatic triglyceride contents approximately 2 fold, which was inhibited completely by YH 439 pretreatment. However, the other P450 2E1 modulators failed to alter the ethanol-induced hepatic triglyceride accumulation. In vitro hepatic microsomal enzyme activity was determined in 4 week old premature and 12 week old adult rats. Aminopyrine-N demethylation was not different, but p-nitrophenol hydroxylation and p-nitroanisole O-demethylation were significantly higher in premature rats. However, no difference in the triglyceride accumulation induced by an intraperitoneal dose of ethanol (3 g/kg) was noted between premature and adult rats. The results suggest that the P450 2E1 activity dose not play an important role in the induction of acute alcoholic fatty liver.

• 한국동물학회지
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• 제33권3호
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• pp.337-345
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• 1990

배추흰나비로부터 정제된 3개의 esterase의 특성을 조사하였으며 면역학적 연구를 통해 E6의 생리적 역할을 추정하였다. 억제제의 연구결과, E2, E6, E11 모두 carboxylesterase임이 밝혀졌다. Km 값은 E2, E6 및 E11이 각각 6.89 X 10-$^4$M. 3.19 $\times$ l0-$^4$M, 3.69 X 10-$^4$M이었다. 분자량은 E2, E6 및 E11이 각각 42 KD, 81 KD, 174 KD이었고 등전점은 각각 pH 5.54, pH 5.89, pH 6.50이었다. 변태에 따른 E6의 농도는 5령 말기에서 가장 높았으며 특히 중장조직에서 높게 나타났다. 따라서 E6은 소화효소로 사료된다.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2011년도 제40회 동계학술대회 초록집
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• pp.91-91
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• 2011

박막태양전지의 높은 효율개선을 위해 TCO층과 p-layer 사이에 buffer layer를 넣어 Voc와 FF를 개선하는 연구가 진행되고 있다. 이에 buffer layer의 활성화 정도를 높이기 위해 p-layer을 최적화 시키고자한다. 이 실험에서 a-Si:B에 N2O를 도핑시켜 Bandgap Energy 2.0 eV, Activation Energy 0.4 eV인 a-SiOx:B 막을 제작하여 buffer layer로 사용하였고 이 buffer layer에 의한 cell의 효율 향상을 최적화 하기위해 ASA simulation을 이용해 p-layer의 Bandgap Energy와 Activation Energy를 가변 하여 보았다. 실험결과 p-layer의 Bandgap Energy 1.95 eV에서 buffer layer와 p-layer사이에서의 barrier가 최소가 됨을 확인 할 수 있었고 Actication Energy 0.5 eV에서 가장 높은 Voc를 가짐을 알 수 있었다. 본 연구를 통해 p-layer의 Bandgap Energy 1.95 eV, Activation Energy 0.5 eV에서 buffer layer를 활성화시키기 위한 p-layer의 최적화 조건을 구현해 볼 수 있었다.

• Journal of Radiation Protection and Research
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• 제2권1호
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• pp.24-30
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• 1977

P.W.R. 형 원자로 증기발생기에서 발생되는 배수는 방사성 물질에 의하여 오염된다. 일반적으로 이 원자로의 증기발생기에 공급되는 급수는 'Phosphate'로 pH를 조절했으나 근래에는 'Ammonia' 조절방법이 선진제국에서 각광을 받고 있는 실정인 바 이는 약알카리로 pH를 조절하여 장치의 부식을 방지하기 위함이다. 본 실험에서는 이온 교환 수지탑을 이용하여 'Ammonia'로 조절된 배수를 처리하는 실험을 하였는 바, Acid Form의 Carboxylic, Cationic 몇 Anionic Ion Exchange Resinces Columns의 직열상태로 운전하였을 시 $^{137}Cs$과 $^{90}Sr$의 제염계수(Decontamination Factor)가 가장 높은 값을 나타낼 수 있으며 또한 그 처리능력이 가장 양호한 편으로 판명되었다.