• 자원환경지질
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• 제53권4호
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• pp.397-411
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• 2020

백악기 유천층군은 후기 백악기 화산암 및 퇴적암으로 구성되며, 경상화산호의 화산활동에 의해 형성되었다. 유천층군 전반에 대한 정밀한 야외조사의 부재는 유천층군의 형성시기와 화산호의 시·공간적 발달양상에 대한 이해의 부재로 귀결되었다. 이번 연구에서는 현풍-부곡 지역에 나타나는 하양층군 최상부인 진동층과 유천층군 최하부의 경계에 대한 지질도를 작성하고 SHRIMP U-Pb 저어콘 연대를 통해 유천층군 형성시기를 규명하였다. 연구지역의 유천층군은 진동층을 정합으로 피복하고 있는 응회암 및 화산력응회암으로 구성되며, 폭발적인 화산분출에 의한 화쇄밀도류에 의해 퇴적되었다. 이들 응회암의 SHRIMP U-Pb 저어콘 연대는 약 96-97 Ma를 보여주며 이는 연구지역 진동층의 퇴적이 약 96-97 Ma에 경상화산호의 폭발적인 화산활동에 의해 종료되었음을 지시한다. 이 연대 범위는 경주지역 의성소분지 남부의 유천층군 최하부 퇴적연대(88-85 Ma)와 차이를 보이는데 이는 유천층군을 형성한 화산활동 및 그 영향 범위가 화산호로부터의 거리 혹은 경상화산호로부터 퇴적물을 공급하는 고수계 발달양상의 차이에 의한 것으로 추정된다.

• Restorative Dentistry and Endodontics
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• 제36권1호
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• pp.50-58
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• 2011

연구목적: 이 연구는 2종의 전부식 접착제와 4종의 자가부식 접착제를 이용하여 유동성 레진을 법랑질에 접착할 경우, 접착제에 따른 미세전단 결합강도와 파절양상을 비교하기 위하여 시행하였다. 연구 재료 및 방법: 발거된 60개의 대구치 치관의 법랑질을 이용하였고, 사용된 접착시스템의 종류에 따라 6개의 군; OS 군(One-Step), SB 군(Single Bond), SE 군(Clearfil SE Bond), TY 군(Tyrian SPE와 One-Step Plus), AP 군(Adper prompt L-Pop), GB 군(G-Bond)으로 분류하였다. 각 군의 법랑질 표면에 배정된 접착시스템을 적용한 후, Tygon tube를 이용하여 법랑질 표면에 유동성 레진(Filtek Z 350 flowable resin)을 접착하였다. 각 군의 미세전단 결합강도를 측정한 후 주사전자현미경하에서 파절양상을 비교하였다. 결과: 1. SB 군의 결합강도는 다른 모든 군보다 통계학적으로 높게 나타났고, GB 군의 결합강도는 다른 모든 군의 결합강도 보다 통계학적으로 낮게 나타났다(p < 0.05). 2. OS 군과 SE 군 및 AP 군의 결합강도는 SB 군보다 낮게 나타났지만, TY 군과 GB 군보다 통계학적으로 높게 나타났다(p < 0.05). 3. TY 군의 결합강도는 GB 군보다 통계학적으로 높게 나타났다(p < 0.05). 4. 접착성 파절은 TY 군과 GB 군에서 가장 많이 나타났고, 혼합파절은 SB 군과 SE 군에서 가장 많이 나타났으며, 응집성 파절은 OS 군, SB 군, SE 군 및 AP 군에서 각각 1개씩 나타났다. 결론: 접착 단계가 같은 접착시스템이라 해도 법랑질에 대한 유동성 레진의 미세전단 결합강도는 서로 다르게 나타났다.

• 한방재활의학과학회지
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• 제24권3호
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• pp.29-37
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• 2014

Objectives Osteoporosis is an impending problem in the rapidly aging society. The purpose of this study is to identify the effects of Yoohyangheukho-dan ($R{\check{u}}xi{\bar{a}}ngh{\bar{e}}ih{\check{u}}-d{\bar{a}}n$) on osteoporosis induced by ovariectomy in rats. Methods 24 rats were randomly assigned to a SHAM group, a control group, and a Yoohyangheukho-dan ($R{\check{u}}xi{\bar{a}}ngh{\bar{e}}ih{\check{u}}-d{\bar{a}}n$) group (n=8). Ovaries were extracted and for 8 weeks, the rats were given dry feeds and Yoohyangheukho-dan ($R{\check{u}}xi{\bar{a}}ngh{\bar{e}}ih{\check{u}}-d{\bar{a}}n$) group were given a mixture of dry feeds and Yoohyangheukho-dan ($R{\check{u}}xi{\bar{a}}ngh{\bar{e}}ih{\check{u}}-d{\bar{a}}n$). At 8 weeks, their body weight, femur mass, tibia ash per body ratio, overall surface area and thickness of the trabeculae, overall surface area of the osteoblasts, and the number of osteoclasts were measured and levels of albumin, aspartate transaminase (AST), alanine transaminase (ALT), alkaline phosphatase (ALP), total-cholesterol, calcium and estradiol were recorded. Results There was no significant difference in the weight of the femur and the tibia ash per body ratio. The Yoohyangheukho-dan ($R{\check{u}}xi{\bar{a}}ngh{\bar{e}}ih{\check{u}}-d{\bar{a}}n$) group had significantly thicker trabeculae than the control group and showed a minimal increase of overall surface area of the trabeculae. The overall surface area of the osteoblasts and the number of osteoclasts decreased in the Yoohyangheukho-dan ($R{\check{u}}xi{\bar{a}}ngh{\bar{e}}ih{\check{u}}-d{\bar{a}}n$) group. There were no statistically significant differences in AST, ALT, ALP, total cholesterol, phosphorus, and estradiol levels. On the contrary the Yoohyangheukho-dan ($R{\check{u}}xi{\bar{a}}ngh{\bar{e}}ih{\check{u}}-d{\bar{a}}n$) group had significantly higher levels of Albumin, triglyceride, and calcium. Conclusions It can be concluded that oral intake of Yoohyangheukho-dan ($R{\check{u}}xi{\bar{a}}ngh{\bar{e}}ih{\check{u}}-d{\bar{a}}n$) prevents the thinning process of the trabeculae. Thus, it may have positive effects on the treatment and prevention of osteoporosis in postmenopausal women.

• 한국가축번식학회지
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• 제12권3호
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• pp.167-173
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• 1988

The present experiment was carried out to investigate super-ovulating response, ovulation time and fertilizability in the angora rabbit that gonadotropin was treated. The results obtained were summarized as follows ; 1. Number of ovulating point and ovarian weight in PMSG 100I.U.(25${\pm}$2.45;1104.2${\pm}$110.6mg) and PMSG 200I.U.(30.6${\pm}$1.76, 1330.0${\pm}$153.9mg) treated group were significantly higher than natural mating(6.6${\pm}$1.49, 560.2${\pm}$60.6mg) and HCG treated group(9.8${\pm}$0.8;651.6${\pm}$55.1mg)(P<0.01). 2. Survival rate and recovery rate in natural mating, HCG and PMSG 100I.U. treated group were significantly higher than PMSG 200I.U. treated group.(P<0.01)(P<0.05). 3. Ovulation started at 10hrs and mostly finished at 16hrs after HCG injection. 4. The fertilizable life of egg ovulated was during 8hrs after ovulation.

• 한국의류학회지
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• 제14권2호
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• pp.98-103
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• 1990

Fibrous adsorbents containing amidoxime group which make chelate complexes with uranyl ions are studied for the recovery of uranium from sea water. Acrylic fibers are used as base Polymer. The adsorption properties of uranium are carried out to examine pH effect, concen-tration dependence, adsorption rate, separation, and chelate complex. The results obtained are as follows; 1. Metal capacity of U (VI) ion is in the range of pH $2\~10.2$. Amidoxime group-containing fiber recover U (VI) ions existed in sea water or waste water in extremely small quantities. 3. Using amidoxime group-containing fiber Cu (II) and U (VI) are separated with each other in dilute nitric acid solution (pH 2.3). 4. U (VI) chelate complexes are conformed by tridendate ligands, which are coordinated with one nitrogen and two oxygens onto amidoxime group-containing fiber.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2000년도 ITC-CSCC -1
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• pp.136-139
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• 2000

In this paper, we use U-Mart that is an agent-based artificial market model. U-Mart is more open than the other artificial market, because In U-Mart, not only computer program agents, but also human agents are able to participate in the market. Therefore, the market in U-Mart gets closer to the real markets and the agents that participate in the market make the complex decision. Moreover we expand to the number of brand to plural. This expansion causes to appear the several strategies to make a profit. As one of this example, we treat the portfolio and confirm the possibility of getting the constancy to make portfolio.

• 식품기술
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• 제24권3호
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• pp.353-368
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• 2011

• 한방재활의학과학회지
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• 제21권4호
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• pp.23-40
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• 2011

Objectives: This study was designed to examine the effects of extracts of Ojeoksangamibang($W{\check{u}}j\bar{i}s\check{a}nji\bar{a}w\grave{e}if\bar{a}ng$) on the lipid lowering, anti-oxidation and concentration of proinflammatory cytokines and was investigated on hyperlipidemic rats. Methods: Male rats weighing $182.39{\pm}4.71g$ were fed high fat diet for 8 weeks and 36 rats(above 400 g) were divided into 4 groups. Each of 9 rats was divided a control group and experimental groups. We fed a control group of rats a basal diet and administered normal saline(100 mg/kg, 1 time/1 day) for 4 weeks. And we fed each experimental group of rats basal diet and administered an extract of Ojeoksangamibang($W{\check{u}}j\bar{i}s\check{a}nji\bar{a}w\grave{e}if\bar{a}ng$) extracts(100 mg/kg, 200mg/kg, 300 mg/kg, 300 mg/kg, 1 time/1 day) for 4 weeks. At the end of the experiment, the rats were sacrificed to determine their chemical composition. We measured lipid of plasma and liver, concentration of proinflmmatory cytokines, anti-oxidative activity and $TNF-{\alpha}$, Apo-B, Apo-E and leptin gene expression. Results: 1. Concentration of plasma free fatty(FFA) showed no significant difference in all the treatment groups. Concentration of plasma triglyceride(TG) showed a significant decrement in the 300 mg/kg in Ojeoksangamibang($W{\check{u}}j\bar{i}s\check{a}nji\bar{a}w\grave{e}if\bar{a}ng$) groups than that of control group. 2. Concentration of plasma total cholesterol showed a significant decrement in the 200 and 300 mg/kg in Ojeoksangamibang($W{\check{u}}j\bar{i}s\check{a}nji\bar{a}w\grave{e}if\bar{a}ng$) groups than that of control group. Concentration of plasma low density lipoprotein(LDL)-cholesterol showed a Significant decrement in the 300 mg/kg in Ojeoksangamibang($W{\check{u}}j\bar{i}s\check{a}nji\bar{a}w\grave{e}if\bar{a}ng$) groups than that of control group. Concentration of plasma high density lipoprotein(HDL)-cholesterol showed a significant increment in the 300 mg/kg in Ojeoksangamibang($W{\check{u}}j\bar{i}s\check{a}nji\bar{a}w\grave{e}if\bar{a}ng$) group. 3. Concentration of liver total cholesterol showed a tendence to decrease in Ojeoksangamibang($W{\check{u}}j\bar{i}s\check{a}nji\bar{a}w\grave{e}if\bar{a}ng$) groups. Concentration of liver TG showed a significant decrement in all Ojeoksangamibang groups than that of control group. 4. Concentration of plasma and liver thiobarbituric acid reactive substance(TBARS) showed a tendence to decrease in Ojeoksangamibang($W{\check{u}}j\bar{i}s\check{a}nji\bar{a}w\grave{e}if\bar{a}ng$) groups. 5. The values of glutathione peroxidase(GSH-Px), superoxide dismutase(SOD) and catalase(CAT) activity showed a significant increment in all Ojeoksangamibang($W{\check{u}}j\bar{i}s\check{a}nji\bar{a}w\grave{e}if\bar{a}ng$) groups than that of control group. 6. The values of plasma aspartate aminotransferase(AST) and alanine aminotransferase(ALT) activity showed no significant different in all treatment group. 7. Concentration of plasma $interleukin(IL)-1{beta}$ showed no significant difference in all the treatment groups. Concentration of plasma IL-6 showed a significant decrement in the 300 mg/kg in Ojeoksangamibang($W{\check{u}}j\bar{i}s\check{a}nji\bar{a}w\grave{e}if\bar{a}ng$) group than that of control group. Concentration of plasma tumor necrosis $factor-{\alpha}(TNF-{\alpha})$ a siginifant decrement in the 200 and 300 mg/kg in Ojeoksangamibang($W{\check{u}}j\bar{i}s\check{a}nji\bar{a}w\grave{e}if\bar{a}ng$) group than that of control group. However the concentration of plasma IL-10 in the 300 mg/kg Ojeoksangamibang($W{\check{u}}j\bar{i}s\check{a}nji\bar{a}w\grave{e}if\bar{a}ng$) groups showed a significant increment than that of control group. 9. In the analysis of reverse transcription-polymerase chain reaction(RT-PCR), gene expression of $TNF-{\alpha}$, Apo-B and Apo-E in the Ojeoksangamibang($W{\check{u}}j\bar{i}s\check{a}nji\bar{a}w\grave{e}if\bar{a}ng$) groups showed a lower expression than that of control group. However the gene expression of leptin showed no difference in the treatment groups. 10. The ratio of $TNF-{\alpha}$, Apo-B, and Apo-E per ${\beta}-actin$ expression in the Ojeoksangamibang($W{\check{u}}j\bar{i}s\check{a}nji\bar{a}w\grave{e}if\bar{a}ng$) groups showed a significant decrement than that of control group. However The ratio of leptin expression per ${\beta}-actin$ expression showed no significant difference among all the treatment groups. Conclusions: According to above results, in lowering lipid effect, anti-oxidation and control of pro-inflammatory cytokines production, Ojeoksangamibang($W{\check{u}}j\bar{i}s\check{a}nji\bar{a}w\grave{e}if\bar{a}ng$) gives effect.

• Clinical and Experimental Pediatrics
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• 제64권7호
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• pp.347-354
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• 2021

Background: Neutrophil gelatinase-associated lipocalin (NGAL) has emerged as a valuable biomarker of urinary tract infection (UTI) in children. Purpose: This study aimed to compare the diagnostic accuracy of urinary NGAL (uNGAL) with those of serum C-reactive protein (CRP) and white blood cell (WBC) count for predicting UTI and acute pyelonephritis (APN) in febrile children. Methods: The medical charts of children undergoing uNGAL measurements between November 2017 and August 2019 were retrospectively reviewed. Patients with a suspected or diagnosed UTIs were included. The diagnostic accuracies of uNGAL, serum CRP, and WBC count for detecting UTI and APN were investigated. Independent predictors of UTI and APN were investigated using multivariable logistic regression analyses. Results: A total of 321 children were enrolled in this study. The uNGAL levels were higher in the UTI group (n=157) than in the non-UTI group (n=164) (P<0.05). Among children with a UTI, uNGAL levels were higher in the APN group (n=70) than, the non-APN group (n=87) (P<0.05). In the multivariate analysis, uNGAL was independently associated with UTI and APN (both P<0.05). Serum CRP and WBC count were not correlated with the presence of UTI and APN. Receiver operating curve analyses showed that the uNGAL level had the highest area under the curve (AUC) for predicting UTI and APN, respectively (AUC, uNGAL vs. CRP vs. WBC count, 0.860 vs. 0.608 vs. 0.669 for UTI; 0.780 vs. 0.680 vs. 0.639 for APN, all P<0.05, respectively). The predictive values and likelihood ratios of uNGAL were superior to those of serum CRP and WBC count for detecting UTI and APN at each cutoff level. Conclusion: UNGAL may be more useful than serum CRP and WBC count for identifying and assessing UTI in febrile children.

• 대한치과교정학회지
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• 제27권2호
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• pp.209-219
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• 1997

본 연구는 골격성 III급 부정교합자에서 상하악절치의 치성보상 양상과 골격형태 사이의 상관관계를 규명하기 위해 시행되었다. 정상교합자 59명, 미약한 골격성 III급 부정교합자 91명 그리고 심한 골격성 III급 부정교합자 58명을 연구대상으로 선정하였으며 특히 미약한 골격성 III급 부정교합자는 전치부 반대교합의 유무에 따라 반대교합이 없는 군과 반대교합군으로 세분하여 연구하였다. 측모두부방사선규격사진을 15개의 골격 형태 계측항목과 16개의 상하악절치 경사도 및 위치 계측항목으로 분석한 뒤 통계 처리하여 다음과 같은 결과를 얻었다. 1. 각 군의 상하악 전치부 치성보상 양상을 보면 II-B군에 비해 II-A군과 III군의 상악 중절치는 순측경사 되어 있으며 II-A군이 III군 보다 크게 순측경사 되어 있었다. 하악절치는 II-A군과 II-B군에 비해 III군이 설측경사 되었으며 II-A군과 II-B군의 차이는 없었다. 2. II-A군과 II-B군 사이의 수직적인 골격형태 차이는 크지 않았고 하악절치 보다는 상악절치 위치 및 경사도에서 큰 차이를 보였다. 3. II- A군의 하악절치와 II-B군의 상악절치 계측항목이 골격형태와 상관성이 높았으며 특히 하악절치 계측항목중에서는 ∠IMPA, ∠FMIA, 상악절치 계측항목중에서는 ∠U1-FH, ∠U1-SN이 높은 상관성을 보였다. 4. 하악절치 계측항목중 ∠IMPA, ∠FMIA는 모든 군에서 골격형태와 높은 상관성을 보였다. 상악절치 계측항목중에서는 ∠U1-SN, ∠U1-FH, U1-facial plane(mm)이 다른 계측 항목에 비해 상관성이 높았다.