• 한국간호교육학회지
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• 제19권4호
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• pp.498-507
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• 2013

Purpose: This study was conducted to investigate the relationship of aging knowledge, attitudes and awareness about supporting the aged in undergraduate students. Method: The participants were 385 undergraduate students in H University in G city. Data were collected from March 1 to April 30, 2012, and analyzed using SPSS/WIN 18.0. Results: The mean of the aging knowledge score was 51.40, the mean of aging attitudes score was 3.06, and the mean of awareness about supporting the aged score was 4.11. Awareness about supporting the aged showed a positive correlation with aging knowledge (r=.299, p<.001). Awareness about supporting the aged showed a positive correlation with aging attitudes (r=.244, p<.001). Conclusion: The findings of this study indicate a need to develop programs for undergraduate students to increase correct aging knowledge, to encourage appropriate aging attitudes and awareness about supporting the aged. In addition, the need for further studies to examine effects of programs are needed.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2000년도 가을 학술발표회논문집(I)
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• pp.503-507
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• 2000

The corrosion protection methods of reinforcing steel in concrete are the various methods such as increasing thickness of cover concrete, using of reinforcing bars coated with epoxy, dosage of corrosion inhibitor as concrete admixture, cathodic protection method and etc. In this study, the performance of corrosion protection was investigated for the test specimens using corrosion inhibitors and cathodic protection, respectively. For this purpose, the accelerated corrosion tests for reinforcing steel were conducted according to the periodic cycles(140 days) of wetting($65^{\circ}C$, 90% R.H) and drying period($15^{\circ}C$, 65% R.H) for the test specimens. As a result, it can be concluded from the test that the effect of corrosion inhibitor was found to be variable with products, the cathodic protection method was found to be independent of salt concentration in concrete.

• 한국수산과학회지
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• 제45권5호
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• pp.507-512
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• 2012

One leptocephalus (TL 59.9 mm) from the family Ophichthidae collected from Jeju Island, Korea, was identified using morphological and molecular methods. Our ophichthid leptocephalus was identified as belonging to the genus Muraenichthys based on morphological characters: 157 myomeres; the origin of the dorsal fin located a little in front of the anus; a distinct melanophore present on the opercle; and six gut swellings present. An analysis of 886 base pairs of the 12S rRNA mtDNA sequences showed that our leptocephalus must be Muraenichthys gymnopterus, because its sequences were concordant with those of an adult M. gymnopterus (d=0.001) and next to those of Muraenichthys sp. leptocephalus (d=0.034). Here, we are the first to describe the morphological characteristics of the M. gymnopterus leptocephalus.

• 기술혁신학회지
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• 제6권4호
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• pp.492-507
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• 2003

Material is enabling technology that creates the product performance and the service of most industrial sectors and fields of technology. However, compared to the other fields such as IT, BT, and NT etc., relatively little attention has been paid to the research on strategy and innovation of materials technology. This bias should have resulted in the misfit of policy and less than enough investment in materials innovation. This paper discusses the characteristics, process, and future of the materials innovation. The process and status of materials technology in Korea are analyzed based on the discussions above. Finally, some suggestions for R＆D strategies of Korea are presented on the basis of the nature, trend and barriers of materials innovation.

• 대한수학회보
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• 제60권2호
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• pp.507-514
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• 2023

Suppose that a line passing through a given point P intersects a given circle 𝓒 at Q and R in the Euclidean plane. It is well known that |PQ||P R| is independent of the choice of the line as long as the line meets the circle at two points. It is also known that similar properties hold in the 2-sphere and in the hyperbolic plane. New proofs for the similar properties in the 2-sphere and in the hyperbolic plane are given.

• Archives of Pharmacal Research
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• 제29권6호
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• pp.503-507
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• 2006

Flavonoids are known as natural anti-inflammatory agents. In this investigation, an anti-inflammatory potential of new topical preparation (SK Ato $Formula^{\circledR}$) containing flavonoid mixtures from Scutellaria baicalensis Georgi roots and Ginkgo biloba L. leaves with an extract of Gentiana scabra Bunge roots was evaluated in an animal model of chronic skin inflammation. Multiple 12-O-tetradecanoylphorbol-13-acetate treatments for 7 consecutive days on ICR mouse ear provoked a chronic type of skin inflammation: dermal edema, epidermal hyperplasia and infiltration of inflammatory cells. When topically applied in this model, this row formulation $(5-20\;{\mu}L/ear/treatment)$ reduced these responses. Furthermore, it inhibited prostaglandin $E_2$ generation (17.1-33.3%) and suppressed the expression of proinflammatory genes, cyclooxygenase-2 and $interleulin-1{\beta}$ in the skin lesion. Although the potency of inhibition was lower than that of prednisolone, all these results suggest that Ato $Formula^{\circledR}$ may be beneficial for treating chronic skin inflammatory disorders such as atopic dermatitis.

• 동의생리병리학회지
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• 제16권3호
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• pp.507-513
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• 2002

Jaeumgenby-tang(JGT) have been used in oriental medicine for many centries as a a therapeutic agent of vertigo caused by deficiency of qi and blood. The effects of JGT on the regional cerebral blood flow(rCBF), mean arterial blood pressure(MABP) and cardiac muscle contractile force(CMF) is not known. The purpose of this Study was to investigate effects of JGT on the rCBF, MABP, CMF and mechanism of JGT induced changed rCBF, MABP, CMF. The changes of rCBF, MABP and CMF were determinated by Laser-Doppler Flowmetry(LDF). The results were as follows; JGT extract was increased rCBF, MABP and CMF in a dose-dependent, specially JGT extract was significantly increased rCBF and MABP. Pretreatment with propranolol was significantly inhibited JGT induced increase of rCBF but pretreatment with indomethacin and methylene blue were accelerated JGT induced increase of rCBF. Pretreatment with propranolol and indomethacin were inhibited JGT induced increase of MABP, but pretreatment with methylene blue was accelerated JGT induced increase of MABP. Pretreatment with propranolol was significantly inhibited JGT induced increase of CMF but pretreatment with indomethacin and methylene blue were accelerated JGT induced increase of CMF. This results suggest that JGT increased rCBF by increasing MABP and CMF and the action of JGT is mediated by adrenergic β-receptor.

• 대한치과교정학회지
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• 제30권2호
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• pp.223-233
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• 2000

본 연구는 측두하악장애가 지속적으로 증가하는 시기인 고교생을 대상으로 측두하악장애의 유병율을 조사함으로서 교정치료시 잠재되어 있을지도 모르는 측두하악장애 환자에 대한 인식을 고취시키고자 시행하였다. 이를 위해 경기도 용인시에 위치한 2개의 고등학교를 임의로 선택하고 만16세, 17세 및 18세의 고등학생을 무작위로 추출한 2,098명 (남자 507명, 여자 1,591명) 을 대상으로 측두하악장애의 주관적 증상과 이상기능에 관한 설문조사를 시행하여 다음과 같은 결론을 얻었다. 1. 측두하악장애의 주관적 증상에 대한 전체의 유병율은 $80.9\%$로 나타났고, 그 중 남자가 $77.3\%$, 여자가 $82.0\%$로 남녀간 유의한 차이를 보였다 (P<0.05). 2. 측두하악장애의 주관적 증상에 대한 연령에 따른 유병율은 15세에 $75.7\%$, 17세에 $83.2\%$ 및 18세에 $83.4\%$로 증가하는 경향을 보였고, 통계학적으로 유의한 차이를 보였다 (P<0.001). 3. 측두하악장애의 주관적 증상중 가장 빈도가 높은 증상은 저작시동통 ($65.9\%$) 이었고, 관절잡음 ($50.7\%$), 개구시동통($41.8\%$) 및 악관절 동통 ($36.8\%$) 순이었다. 4. 구강내 이상기능인 이악물기 (r=0.166) 와 이갈이 (r=0.057)는 측두하악장애의 주관적 증상과 통계학적으로 상관관계가 거의 없었다.

• 한국잡초학회지
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• 제32권1호
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• pp.44-51
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• 2012

본 시험은 2010년 경상북도 농업기술원 벼 시험재배 포장에서 잡초발생 예찰 시스템 구축의 일환으로 최근 담수 직파답이 늘어나면서 벼 재배시 문제잡초인 피와 너도방동사니를 대상으로 잡초 밀도별 벼와의 경합력을 구명하고 Rectangular hyperbola 모델을 기초로 잡초의 밀도에 따른 쌀 수량 감소를 예측하고 경제적인 방제 필요수준을 구명하고자 본 시험을 실시하게 되었다. 피와 벼와의 밀도 경합에 따른 쌀수량 예측식은 y=507kg/(1+0.001734x), $R^2$=0.867이고, 너도방동사니는 y=560kg/(1+0.001883x), $R^2$=0.933으로 나타났다. 표 6은 재료 및 방법에 제시한 바와 같이 Cousens(1987)에 의해 개발된 계산식(2)을 이용하여 벼와 잡초와의 경합에 있어서 당해연도 경제적 한계 허용밀도를 산출하여 나타내었다. 그 결과, 제초제 구입비용은 ha당 150,280원(2010년)이었고, 제초제를 살포하는데 소요되는 인건비 등은 ha당 99,360원, 쌀의 kg당 가격은 1,605원, 제초제의 방제가는 95%로 적용하였을 때 경제적 한계 허용 밀도는 잡초 완전 방제시 쌀 수량이 5.07톤이고 1본당 수량 감수 정도가 0.001734인 피는 평방미터당 2.3본, 잡초 완전 방제시 쌀 수량이 5.60톤이고 1본당 수량 감수 정도가 0.001883인 너도방동사니는 평방미터당 15.5본이었다. 이와 같은 결과로 볼때 잡초의 벼에 대한 경합력이 높을수록 경제적 한계 허용 밀도의 본수는 줄어들었고, 경합력이 낮았던 잡초는 경제적 한계 허용 밀도의 본수가 증가되는 경향이었다.

• 한국산학기술학회논문지
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• 제19권6호
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• pp.231-239
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• 2018

본 연구의 목적은 영유아와 어머니의 일반적 특성, 사회적 지지 그리고 모아상호작용이 모아애착에 미치는 영향을 분석하는 것이다. 본 연구는 서술적 조사연구로 자료수집기간은 2016년 3월 1일부터 9월 30일까지였다. 영유아기의 자녀가 있는 어머니 215명을 대상으로 자가 보고형 설문지를 이용하여 일반적 특성, 사회적 지지, 모아상호작용 그리고 애착에 대한 자료를 수집하였다. 수집된 자료는 SPSS 24.0 프로그램을 이용하여 기술통계, 집단간 평균비교, 상관관계 그리고 다중회귀분석으로 분석하였다. 연구결과 영유아의 특성 중 성별(t=3.200, p<.002), 연령(t=4.037, p<.001)과 기질(F=4.614, p<.011)에 따라, 어머니의 특성 중 연령(F=18.028, p<.001)과 학력(F=4.241, p<.016)에 따라 애착의 평균값이 통계적으로 유의한 차이가 있었다. 애착은 사회적 지지(r=.507, p<.001) 및 모아상호작용(r=.571, p<.001)과 통계적으로 유의한 양의 상관관계가 있었다. 애착에 영향을 미치는 요인은 모아상호작용(${\beta}=0.361$, p<.001), 사회적 지지(${\beta}=0.309$, p<.001), 연령(30세미만)(${\beta}=-0.370$, p<.001) 그리고 결혼 기간(10년 미만)(${\beta}=-0.179$, p<.033)이었다. 애착에 중요한 영향을 미치는 사회적 지지와 모아상호작용을 높일 수 있는 중재 프로그램 개발이 필요할 것으로 생각된다.