• Korean Journal of Mathematics
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• 제17권1호
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• pp.15-23
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• 2009

Let D be an integral domain, P be a nonzero prime ideal of D, $\{P_{\alpha}{\mid}{\alpha}{\in}{\mathcal{A}}\}$ be a nonempty set of prime ideals of D, and $\{I_{\beta}{\mid}{\beta}{\in}{\mathcal{B}}\}$ be a nonempty family of ideals of D with ${\cap}_{{\beta}{\in}{\mathcal{B}}}I_{\beta}{\neq}(0)$. Consider the following conditions: (i) If $P{\subseteq}{\cup}_{{\alpha}{\in}{\mathcal{A}}}P_{\alpha}$, then $P=P_{\alpha}$ for some ${\alpha}{\in}{\mathcal{A}}$; (ii) If ${\cap}_{{\beta}{\in}{\mathcal{B}}}I_{\beta}{\subseteq}P$, then $I_{\beta}{\subseteq}P$ for some ${\beta}{\in}{\mathcal{B}}$. In this paper, we prove that D satisfies $(i){\Leftrightarrow}D$ is a generalized weakly factorial domain of ${\dim}(D)=1{\Rightarrow}D$ satisfies $(ii){\Leftrightarrow}D$ is a weakly Krull domain of dim(D) = 1. We also study the t-operation analogs of (i) and (ii).

• 호남수학학술지
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• 제33권3호
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• pp.419-424
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• 2011

Let D be an integral domain, Spec(D) the set of prime ideals of D, and X a subspace of the Zariski topology on Spec(D). We show that X is compact if and only if given any ideal I of D with $I{\nsubseteq}P$ for all $P{\in}X$, there exists a finitely generated idea $J{\subseteq}I$ such that $J{\nsubseteq}P$ for all $P{\in}X$. We also prove that if D = ${\cap}_{P{\in}X}D_P$ and if * is the star-operation on D induced by X, then X is compact if and only if * $_f$-Max(D) ${\subseteq}$X. As a corollary, we have that t-Max(D) is compact and that ${\mathcal{P}}$(D) = {P${\in}$ Spec(D)$|$P is minimal over (a : b) for some a, b${\in}$D} is compact if and only if t-Max(D) ${\subseteq}\;{\mathcal{P}}$(D).

• 대한약리학회지
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• 제27권2호
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• pp.135-144
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• 1991

흰쥐 말초혈액에서 얻은 T 림프구를 아드레날린성 ${\beta}-$수용체 효현제 및 concanavalin A(Con-A)로 자극해 다음과 같은 결과를 얻었다. 자극이 없는 상태에서의 주 인산화 단백은 분자량 44kD, 등전점 6.8의 단백이었으며 효현제로 자극시키면 분자량 44kD, 등전점 6.3의 단백이 새로이 인산화되어 나타났다. 이 분자량 44kD, 등전점 6.3의 단백은 forskolin에 의해 역시 인산화되며 A-kinase 억제제인 H-8을 전처치하면 인산화의 억제가 나타났다. 또한 Con-A로 자극시키면 44 kD/pI 6.3 단백의 인산화가 증가되었으며 이 인산화의 증가는 CaM kinase 억제제인 W-7 전처치에 의해 억제되었다. H-7은 분자량 44 kD, 등전점 6.8 단백의 인산화를 감소 시켰다. 이상의 결과로 분자량 44 kD 등전점 6.3의 단백은 A-kinase와 CaM kinase 모두에 의해 인산화 되는 기질단백으로서 tryptic peptide map상에서 44 kD/pI 6.8 단백과 44 kD/pI 6.3 단백은 서로 다른 단백임을 알 수 있었다.

• 한국응용곤충학회지
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• 제20권4호
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• pp.196-206
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• 1981

국립식물검역소 인천지소에 소장중인 수입원목해충 중 나무좀류를 동정한 결과 다음과 같이 나무좀과에서 2 아과 6속 14종이 긴 나무좀에서 2아과 2속 11종이 확인되었다. Scolytidae Ipinae Arixyleborus granulifer A. rugosipes Xyleborus posticepilosus X. similis X. subcostatus Ips pini I. plastographus I. tridens Trypodendron lineatum Hylesininae Dendroctonus adjunctus D. brevicomis D. frontalis D. ponderosae Hylurgops porosus Platypodidae Platypodinae Platypus agnatus P. biuncus P. curtus P. geminatus P. jansoni P. maritimus P. pseudocupulatus pseudocupulatus P. shoreanus bifurcus P. solidus Diaporinae Diapus pendleburyi D. pusillimus.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2003년도 제24회 학술발표회 초록집
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• pp.68-68
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• 2003

• 한국진공학회:학술대회논문집
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• 한국진공학회 2002년도 제23회 학술발표회 초록집
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• pp.176-176
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• 2002

• 한국가축번식학회지
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• 제22권1호
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• pp.89-94
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• 1998

A study was made to investigate the effects of concerning factors with IGF-I recovery on the final IGF-I concentration in the effluent and to establish recovery conditions of IGF-I using liquid emulsion membranes(LEM). D2EHPA was best carrier among Amberlite LA2, Aliquit 336 and D2EHPA for recovery rate of IGF-I. Recovery rate of IGF-I by D2EHPA volume in the oil phase was increased as increasing D2EHPA volume, and optimal volume of D2EHPA was 5% in this experiment. The recovery rate of IGF-I by D2EHPA was increased by the decreasing from pH 7 to pH 4 of external phase. Therefore, optimal pH value was 4.0. Optimal concentrations of sulfuric acid in internal phase, paraffin oil in oil phase and Span 80 for recovery rate of IGF-I were 0.1M, 2.0% and 5%, respectively, and optimal W/O rate was 2. These results suggested that optimal conditions for recovery of IGF-I were D2EHPA(5%) as carrier, pH 4.0, 0.1M sulfuric acid, 2% paraffin oil, 2.0 W/O rate and 5.0% Span 80.

• 한국환경복원기술학회지
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• 제19권3호
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• pp.45-57
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• 2016

This study was focused on the northernmost limit of the distribution changing of Daphniphyllum macropodum and studied characteristic of plant communities of natural monument No. 91 in Najangsan national park, Korea. The results of this study were as follows : 1. The highest importance percentage(I.P.) value at tree layer in Quercus. mongolica community was Q. mongolica, 37.8%. But the highest value of mean importance percentage(M.I.P.) was D. macropodum, 32.8%. 2. The highest I.P. value at tree layer in Carpinus laxiflora community was C. laxiflora, 47.4%. The highest M.I.P. value was C. laxiflora, 28.8% and M.I.P. value of D. macropodum was 24.0%. 3. The highest I.P. value at tree layer in D. macropodum community was D. macropodum, 55.6%. C. laxiflora and Q. mogolica I.P. value was 14.8% and 6.8%, respectively. The highest M.I.P. value was D. macropodum, 47.9%. Sapium japonicum and C. laxiflora M.I.P. value was 11.4% and 10.7%, respectively. 4. The highest I.P. value at tree layer in Quercus variabilis community was C. laxiflora, 20.8%. Q. variabilis and Acer pseudosieboldianum I.P. value was 15.3% and 12.5%, respectively. The highest M.I.P. value was D. macropodum, 21.5%. It needs to the continuous monitoring of vegetation and importance percentage change in tree layer and subtree layer of D. macropodum. The researching results of D. macropodum distribution, the distribution range of D. macropodum showed expanded more than range of Lim and Oh' result(1999). In other words, it was distributed low density level between Najangsa temple and Byeokryeonam, and distributed in upper Keumsun waterfall and Wonjeok upper valley. D. macropodum was appeared on hiking trails around from Wonjeokam to Bulchulbong. Especially, it was found in this study that D. macropodum was distributed on Seoraebong's north which placed outside area of Naejangsa region. In this study, it was considered that distribution range of D. macropodum was expanded. Also, it is expected to be used as a result of the field study of changing distribution study of broad leaved evergreen forest due to global warming.

• 농업과학연구
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• 제22권2호
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• pp.163-169
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• 1995

본 연구는 홀스타인종 유우의 혈청단백질 및 효소에 대한 유전적 구조를 분석하기 위하여, 혈청단백질인 post-transferrin-2(pTf-2), transferrin(Tf), post-albumin(pAlb) 및 albumin(Alb)과 혈청효소인 ceruloplasmin(Cp)와 amylase-I(Am-I)을 polyacrylamide gel electrophoresis(PAGE)와 starch g디 electrophoresis(STAGE) 방법으로 유전적 변이체를 분석하였다. 혈청단백질인 pTf-2 좌위는 pTf-2 F와 S 유전자에 의해 지배되는 pTf-2 FF, FS 및 SS 유전자형이 확인되었으며, 이들의 분포는 각각 76.34%, 14.50% 및 9.10%이었고, 유전자빈도는 pTf-2 F와 S가 각각 0.836 및 0.164이었다. 한편 Tf 좌위는 Tf A, D1, D2 및 E 유전자가 검출되었으며, 유전자형은 Tf AA, AD1, AD2, AE, D1D1, D1D2, D2D2 및 D2E형이 확인되었고, 이들의 분포는 각각 0.11, 32.06, 19.08, 1.53, 10.69, 18.32, 9.92 및 2.29%이었으며, 유전자빈도는 Tf A, D1, D2 및 E에서 각각 0.324, 0.359, 0.298 및 0.019이었다. 또한 pAlb 좌위는 pAlb F와 S 유전자가 검출되었고, 유전자형은 pAlb FF, FS 및 SS형이 확인되었으며, 이들의 분포는 각각 32.06, 29.77 및 38.17%이었고, 유전자빈도는 pAlb F와 S가 각각 0.469 및 0.531이었다. Alb 유전자 빈도에 있어서는 Alb A와 B가 각각 0.996 및 0.004이었다. 그리고 혈청효소인 Cp 좌위는 Cp F와 S 유전자가 검출되었으며, 유전자형은 Cp FF, FS 및 SS 형이 확인되었고, 이들의 분포는 각각 46.57, 27.48 및 25.95%이었으며, 유전자빈도는 Cp F와 S가 각각 0.603 및 0.394이었다. Am-I 좌위는 Am-I B와 C 유전자가 검출되었으며, 유전자형은 Am-I BB, BC 및 CC 형이 확인되었고, 이들의 빈도비율은 각각 39.69, 21.73 및 38.93% 이었으며, 유전자 빈도는 Am-I B와 C가 각각 0.503 및 0.497이었다.

• Journal of Nutrition and Health
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• 제29권7호
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• pp.758-771
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• 1996

This study attempted to define reference data for the distribution of vitamin d status and to explore the relationship between vitamin D status and related biochemical indices in Korean women. The vitamin D status of 179 Korean women aged from 20 to 75 years was analyzed by using HPLC(High Pressure Liquid Chromatography). Related biochemical indices such as iPTH, alkaline phosphatase, creatinine, albumin, Ca, Mg and P were also measured. The mean serum level of 25-hydroxyvitamin D and 1,25-dihydroxyvitamin D were s25.8ng/ml and 89.8pg/ml, respectively. Low 25-hydroxyvitamin D (<25nmol/L) was found in 29 subjects(16.5%). There was a significantly progressive decrease in serum 25-hydroxyvitamin D with increasing age(p<0.05). After in their, there was a dramatical reduction in 25-hydroxyvitamin D(p<0.05). It was also significant in post-menopasusal women compared with pre-menopausal women(p<0.000). Serum alkaline phosphatase levels increased significantly with age(p<0.001). Whereas serum calcium and phosphorus levels remained constant with age. Serum 250-hydroxyvitamin D was invesely related to iPTH (p<0.05) and alkaline phophatase (p<0.001).