• Journal of Digital Convergence
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• v.15 no.7
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• pp.247-257
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• 2017

The purpose of this study was to measure the depression level of college students and to analyze the effects of college life stress and circadian rhythm on depression. A questionnaire survey was conducted to 720 students of college in Gwangju area from October 10, 2016 to October 31, and 687 of the collected questionnaires were analyzed. As this result, 34.5% of the students needed treatment for depression, and 71.6% of the students had mild depression. Second, depression was higher in female students, in higher grade students and students living apart from their parents. Third, evening activity type showed higher depression than morning activity type. Fourth, regression analysis revealed that depression was influenced by stress of value problem, circadian rhythm, academic stress, and getting a job stress. The results of this study suggest that students should be able to detect depression early and run a mental health program to relieve college life stress in college. However, this study is limited to some local college students and is not suitable for generalization. It is necessary to conduct research to compare university students and college students in the future.

• Journal of the Korean Society of Clothing and Textiles
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• v.21 no.8
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• pp.1417-1426
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• 1997

본 연구의 목적은 노년층 남성과 여성의 자아존중과 기성복만족에 대한 신체만족도의 관계 및 남녀의 차이점을 알아보는 것이다. 나이 55세 이상의 미국 남부에 거주하는 302명의 남성과 여성에게 설문지가 배부되었고, 50명의 남성과 58명의 여성이 자료분석에 이용되었다. 신체만족도는 신체 5 부위(얼굴, 하체, 신장, 체중, 토르소)로 나뉘어 측정되었고, 자아존중은 Rosenberg의 자아존중 척도가 사용되었으며, 기성복에 대한 만족은 기성복의 맞는 정도와 스타일에 대하여 측정되었다. 그 결과 노년층 남성과 여성 모두에게 있어 자아존중은 신체만족도와 관련이 있었지만 남성보다 여성에게 있어 자아존중은 신체만족도와 더 깊은 관련이 있는 것으로 나타났다. 또한 신체만족도와 기성복에 대한 만족은 노년층 남성과 여성 모두에게 있어 관련이 있었으나 여성이 남성보다 체중에 대한 만족이 기성복만족과 더 깊은 관련이 있었다.

• Proceedings of the Korean Nuclear Society Conference
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• 1997.05b
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• pp.345-349
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• 1997

고준위 방사성 액체폐기물에서 얻어지는 백금족 금속(Pd, Rh, Ru) 들의 분리 및 정제방법으로 강염기성 음이온교환수지를 사용하여본 결과 상용 수지중에서 Dowex 1 $\times$ 8 이 IRN-78 에 비하여 저 농도의 질산 농도에서 Pd(II) 의 분리 및 정제시 우수한 흡착성을 보여 주었으며 Rh(III) 의 흡착은 Pd(II) 의 것보다 훨씬 낮은 값을 보여 주었다. 이 수지들의 백금족 금속에 대한 흡착성을 문헌에 보고된 실험 결과들과 비교 검토하여 본 바 이온 그룹으로 3급 및 4급 Benzimidazole을 가지는 수지에 비하여 훨씬 낮은 값을 나타내었다. 따라서 실용성이 큰 강염기성 음이온수지로서는 Benzimidazole과 같은 혼합 아민 그룹을 지닌 수지가 가장 접합할 것으로 전망되었다.

• Food Industry
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• s.73
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• pp.65-68
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• 1984

• Food Industry
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• s.145
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• pp.97-99
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• 1998

• Journal of the korean academy of Pediatric Dentistry
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• v.34 no.1
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• pp.27-35
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• 2007

Stainless steel crowns are invaluable restorative material for the treatment of badly broken down primary teeth in pediatric dentistry. But it is difficult to fit margin because selection of size is not easy and they are not adjusted for Korean children. The purpose of this study was to examine and analyze the marginal adaptation of stainless steel crown of posterior primary tooth. Marginal surface was taken by Fine Pix S602 digital camera and measurements of crown were recorded at 20 points that were randomly selected for marginal gap evaluation by Kappa image base program. 1. Mean marginal gap were large upper 2nd primary molar, lower 1st primary molar, lower 2nd primary molar, upper 1st primary molar in order(p<0.05). 2. Mean marginal surface dimension ratio was more than 20% irrespective of tooth. 3. Largest amount of marginal gap was shown at mesial surface in upper 1st, 2nd primary molar and distolingual surface in lower 1st primary molar, buccal surface in lower 2nd primary molar.

• Journal of The Geomorphological Association of Korea
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• v.19 no.3
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• pp.109-121
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• 2012

Rock-surface temperatures were observed at a trachytic lava dome, called as Baeknokdam Northwest Face, in the summit area of Mt. Halla, Jeju Island, to examine the frequency and occurrence season of freeze-thaw cycles and the rate of temperature changes during a freezing period. Long-term measurements were recorded over 18 months from November 2006 to April 2008, at a 1-hour logging interval and rock depth of 1.5 cm. Both diurnal freeze-thaw cycles and effective freeze-thaw cycles appear in larger numbers on a south-facing rock face than a north-facing rock face. The diurnal cycles were dominantly observed on February and March for the south face and on November and April for the north face, respectively. The annual freeze-thaw cycles were confirmed in terms of the presence of seasonal freezing periods lasting from mid-November to mid-April for the south face and from early-November to late-April for the north face, respectively. The rate of decreasing temperatures during the seasonal freezing periods is larger on the north face than the south face. Notwithstanding the lower numbers of freeze-thaw events, the north face experiences a higher frost intensity since the number of hours below $-3^{\circ}C$ is larger on the north face than the south face. The number of freeze-thaw events and the duration of days with continuous sub-zero rock temperatures largely depend on the solar radiation controlled by the aspect of the monitored rock surfaces, and thus the high-frequency short-term frost cycle dominantly appears on the south face and the annual frost cycle on the north face, respectively.

• Journal of the Mineralogical Society of Korea
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• v.32 no.1
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• pp.15-39
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• 2019

An ultramafic complex occurs as an isolated lenticular body in the Andong area. The Andong ultramafic complex comprises ultramafic and mafic rocks, but mainly peridotites. The complex extends for several kilometer to ENE direction, adjacent to the Andong fault line. This study is for petrochemistry of the peridotites within the ultramafic complex and characteristics of asbestos occurrences. The peridotites are igneous origin, ranging from lherzolite to wehrlites and are characterized by high Fo olivine ($Fo_{0.85-0.87}$), Mg clinopyroxene ($Mg_{87.5-93.5}$), and tremolitic to tschermakitic hornblende. Geochemically, these rocks show high magnesium number (mainly Mg = 85.3-87.38) and transitional element and low alkali element contents. The peridotites host asbestos, including chrysotile, tremolite and actinolite asbestos, but dominated by amphibole asbestos. The amphibole asbestos are found along small fault face, and cleavage and fracture showing several cm to ten cm in width as slip and oblique fibers, while the chryostiles occur at cleavage and vein showing several mm-cm in width as cross and slip fibers. They are confirmed by PLM, XRD and SEM results. Overall characteristics of peridotites from the Andong ultramafic complex and occurrences of the asbestos are similar to those of worldwide orogenic related Alpine type ultramafic rocks and serpentinized ultramafic bodies in Chungnam, Korea, respectively.

• The Safety technology
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• no.172
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• pp.24-25
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• 2012

건설현자의 경우 고령근로자가 많고, 현장 구성원의 이동이 잦기 때문에 사고가 많이 발생할 수밖에 없습니다. 하지만 근로자들이 보호구를 착용하고, 현장에서도 안전시설을 확실히 설치해둔다면 그 피해는 크게 줄일 수 있다고 확신합니다. 사고는 한순간의 방심과 과오를 통해 발생합니다. 현장 관계자 모두가 이 사실을 명심하고 항상 기본을 지키는 습관을 가지시기 바랍니다. 또 현장에서는 질 좋은 보호구와 안전시설을 통해 근로자들의 근원적인 안전을 확보해주시기 바랍니다. 우리(주)기성의 30여명 임직원들도 우리나라 산업현장의 특성에 맞는 제품들을 꾸준히 연구 개발해나가면서, 산업 안전을 지키려는 많은 분들의 발걸음에 동참해나가도록 하겠습니다.

• Monthly Duck's Village
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• s.236
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• pp.20-23
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• 2023

"조류인플루엔자 없는 청정 대한민국을 위해 최선을 다할 것입니다. 일단 위험도 평가에 기반한 방역지역·농가 세분화 및 차별화 된 방역조치를 추진하고 오리의 사육 방식 및 방역시설 개선을 통해 고병원성 AI를 근본적으로 차단하는데 총력을 기울일 계획입니다." 홍기성 농식품부 방역정책국 조류인플루엔자방역과장은 방역정책국에서 잔뼈가 굵은 방역전문가로 특히 가금분야의 특수성을 이해하고 있는 책임자로 정평이 나있다. 현장에서의 경험을 바탕으로 오리농가의 현실을 가장 잘 이해하고 있기 때문에 보다 더 실효성 있는 정책을 펼치고 싶다는 홍 과장을 직접 만나 오리 방역 정책에 대해 들어봤다.